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--- old/usr/src/uts/common/fs/nfs/nfs4_srv.c
+++ new/usr/src/uts/common/fs/nfs/nfs4_srv.c
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 24 */
25 25
26 26 /*
27 27 * Copyright (c) 1983,1984,1985,1986,1987,1988,1989 AT&T.
28 28 * All Rights Reserved
29 29 */
30 30
31 31 /*
32 32 * Copyright (c) 2012, 2016 by Delphix. All rights reserved.
33 33 * Copyright 2019 Nexenta Systems, Inc.
34 34 * Copyright 2019 Nexenta by DDN, Inc.
35 35 */
36 36
37 37 #include <sys/param.h>
38 38 #include <sys/types.h>
39 39 #include <sys/systm.h>
40 40 #include <sys/cred.h>
41 41 #include <sys/buf.h>
42 42 #include <sys/vfs.h>
43 43 #include <sys/vfs_opreg.h>
44 44 #include <sys/vnode.h>
45 45 #include <sys/uio.h>
46 46 #include <sys/errno.h>
47 47 #include <sys/sysmacros.h>
48 48 #include <sys/statvfs.h>
49 49 #include <sys/kmem.h>
50 50 #include <sys/dirent.h>
51 51 #include <sys/cmn_err.h>
52 52 #include <sys/debug.h>
53 53 #include <sys/systeminfo.h>
54 54 #include <sys/flock.h>
55 55 #include <sys/pathname.h>
56 56 #include <sys/nbmlock.h>
57 57 #include <sys/share.h>
58 58 #include <sys/atomic.h>
59 59 #include <sys/policy.h>
60 60 #include <sys/fem.h>
61 61 #include <sys/sdt.h>
62 62 #include <sys/ddi.h>
63 63 #include <sys/zone.h>
64 64
65 65 #include <fs/fs_reparse.h>
66 66
67 67 #include <rpc/types.h>
68 68 #include <rpc/auth.h>
69 69 #include <rpc/rpcsec_gss.h>
70 70 #include <rpc/svc.h>
71 71
72 72 #include <nfs/nfs.h>
73 73 #include <nfs/nfssys.h>
74 74 #include <nfs/export.h>
75 75 #include <nfs/nfs_cmd.h>
76 76 #include <nfs/lm.h>
77 77 #include <nfs/nfs4.h>
78 78 #include <nfs/nfs4_drc.h>
79 79
80 80 #include <sys/strsubr.h>
81 81 #include <sys/strsun.h>
82 82
83 83 #include <inet/common.h>
84 84 #include <inet/ip.h>
85 85 #include <inet/ip6.h>
86 86
87 87 #include <sys/tsol/label.h>
88 88 #include <sys/tsol/tndb.h>
89 89
90 90 #define RFS4_MAXLOCK_TRIES 4 /* Try to get the lock this many times */
91 91 static int rfs4_maxlock_tries = RFS4_MAXLOCK_TRIES;
92 92 #define RFS4_LOCK_DELAY 10 /* Milliseconds */
93 93 static clock_t rfs4_lock_delay = RFS4_LOCK_DELAY;
94 94 extern struct svc_ops rdma_svc_ops;
95 95 extern int nfs_loaned_buffers;
96 96 /* End of Tunables */
97 97
98 98 static int rdma_setup_read_data4(READ4args *, READ4res *);
99 99
100 100 /*
101 101 * Used to bump the stateid4.seqid value and show changes in the stateid
102 102 */
103 103 #define next_stateid(sp) (++(sp)->bits.chgseq)
104 104
105 105 /*
106 106 * RFS4_MINLEN_ENTRY4: XDR-encoded size of smallest possible dirent.
107 107 * This is used to return NFS4ERR_TOOSMALL when clients specify
108 108 * maxcount that isn't large enough to hold the smallest possible
109 109 * XDR encoded dirent.
110 110 *
111 111 * sizeof cookie (8 bytes) +
112 112 * sizeof name_len (4 bytes) +
113 113 * sizeof smallest (padded) name (4 bytes) +
114 114 * sizeof bitmap4_len (12 bytes) + NOTE: we always encode len=2 bm4
115 115 * sizeof attrlist4_len (4 bytes) +
116 116 * sizeof next boolean (4 bytes)
117 117 *
118 118 * RFS4_MINLEN_RDDIR4: XDR-encoded size of READDIR op reply containing
119 119 * the smallest possible entry4 (assumes no attrs requested).
120 120 * sizeof nfsstat4 (4 bytes) +
121 121 * sizeof verifier4 (8 bytes) +
122 122 * sizeof entry4list bool (4 bytes) +
123 123 * sizeof entry4 (36 bytes) +
124 124 * sizeof eof bool (4 bytes)
125 125 *
126 126 * RFS4_MINLEN_RDDIR_BUF: minimum length of buffer server will provide to
127 127 * VOP_READDIR. Its value is the size of the maximum possible dirent
128 128 * for solaris. The DIRENT64_RECLEN macro returns the size of dirent
129 129 * required for a given name length. MAXNAMELEN is the maximum
130 130 * filename length allowed in Solaris. The first two DIRENT64_RECLEN()
131 131 * macros are to allow for . and .. entries -- just a minor tweak to try
132 132 * and guarantee that buffer we give to VOP_READDIR will be large enough
133 133 * to hold ., .., and the largest possible solaris dirent64.
134 134 */
135 135 #define RFS4_MINLEN_ENTRY4 36
136 136 #define RFS4_MINLEN_RDDIR4 (4 + NFS4_VERIFIER_SIZE + 4 + RFS4_MINLEN_ENTRY4 + 4)
137 137 #define RFS4_MINLEN_RDDIR_BUF \
138 138 (DIRENT64_RECLEN(1) + DIRENT64_RECLEN(2) + DIRENT64_RECLEN(MAXNAMELEN))
139 139
140 140 /*
141 141 * It would be better to pad to 4 bytes since that's what XDR would do,
142 142 * but the dirents UFS gives us are already padded to 8, so just take
143 143 * what we're given. Dircount is only a hint anyway. Currently the
144 144 * solaris kernel is ASCII only, so there's no point in calling the
145 145 * UTF8 functions.
146 146 *
147 147 * dirent64: named padded to provide 8 byte struct alignment
148 148 * d_ino(8) + d_off(8) + d_reclen(2) + d_name(namelen + null(1) + pad)
149 149 *
150 150 * cookie: uint64_t + utf8namelen: uint_t + utf8name padded to 8 bytes
151 151 *
152 152 */
153 153 #define DIRENT64_TO_DIRCOUNT(dp) \
154 154 (3 * BYTES_PER_XDR_UNIT + DIRENT64_NAMELEN((dp)->d_reclen))
155 155
156 156
157 157 static sysid_t lockt_sysid; /* dummy sysid for all LOCKT calls */
158 158
159 159 u_longlong_t nfs4_srv_caller_id;
160 160 uint_t nfs4_srv_vkey = 0;
161 161
162 162 void rfs4_init_compound_state(struct compound_state *);
163 163
164 164 static void nullfree(caddr_t);
165 165 static void rfs4_op_inval(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
166 166 struct compound_state *);
167 167 static void rfs4_op_access(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
168 168 struct compound_state *);
169 169 static void rfs4_op_close(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
170 170 struct compound_state *);
171 171 static void rfs4_op_commit(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
172 172 struct compound_state *);
173 173 static void rfs4_op_create(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
174 174 struct compound_state *);
175 175 static void rfs4_op_create_free(nfs_resop4 *resop);
176 176 static void rfs4_op_delegreturn(nfs_argop4 *, nfs_resop4 *,
177 177 struct svc_req *, struct compound_state *);
178 178 static void rfs4_op_delegpurge(nfs_argop4 *, nfs_resop4 *,
179 179 struct svc_req *, struct compound_state *);
180 180 static void rfs4_op_getattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
181 181 struct compound_state *);
182 182 static void rfs4_op_getattr_free(nfs_resop4 *);
183 183 static void rfs4_op_getfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
184 184 struct compound_state *);
185 185 static void rfs4_op_getfh_free(nfs_resop4 *);
186 186 static void rfs4_op_illegal(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
187 187 struct compound_state *);
188 188 static void rfs4_op_link(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
189 189 struct compound_state *);
190 190 static void rfs4_op_lock(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
191 191 struct compound_state *);
192 192 static void lock_denied_free(nfs_resop4 *);
193 193 static void rfs4_op_locku(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
194 194 struct compound_state *);
195 195 static void rfs4_op_lockt(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
196 196 struct compound_state *);
197 197 static void rfs4_op_lookup(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
198 198 struct compound_state *);
199 199 static void rfs4_op_lookupp(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
200 200 struct compound_state *);
201 201 static void rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop,
202 202 struct svc_req *req, struct compound_state *cs);
203 203 static void rfs4_op_nverify(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
204 204 struct compound_state *);
205 205 static void rfs4_op_open(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
206 206 struct compound_state *);
207 207 static void rfs4_op_open_confirm(nfs_argop4 *, nfs_resop4 *,
208 208 struct svc_req *, struct compound_state *);
209 209 static void rfs4_op_open_downgrade(nfs_argop4 *, nfs_resop4 *,
210 210 struct svc_req *, struct compound_state *);
211 211 static void rfs4_op_putfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
212 212 struct compound_state *);
213 213 static void rfs4_op_putpubfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
214 214 struct compound_state *);
215 215 static void rfs4_op_putrootfh(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
216 216 struct compound_state *);
217 217 static void rfs4_op_read(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
218 218 struct compound_state *);
219 219 static void rfs4_op_read_free(nfs_resop4 *);
220 220 static void rfs4_op_readdir_free(nfs_resop4 *resop);
221 221 static void rfs4_op_readlink(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
222 222 struct compound_state *);
223 223 static void rfs4_op_readlink_free(nfs_resop4 *);
224 224 static void rfs4_op_release_lockowner(nfs_argop4 *, nfs_resop4 *,
225 225 struct svc_req *, struct compound_state *);
226 226 static void rfs4_op_remove(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
227 227 struct compound_state *);
228 228 static void rfs4_op_rename(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
229 229 struct compound_state *);
230 230 static void rfs4_op_renew(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
231 231 struct compound_state *);
232 232 static void rfs4_op_restorefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
233 233 struct compound_state *);
234 234 static void rfs4_op_savefh(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
235 235 struct compound_state *);
236 236 static void rfs4_op_setattr(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
237 237 struct compound_state *);
238 238 static void rfs4_op_verify(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
239 239 struct compound_state *);
240 240 static void rfs4_op_write(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
241 241 struct compound_state *);
242 242 static void rfs4_op_setclientid(nfs_argop4 *, nfs_resop4 *,
243 243 struct svc_req *, struct compound_state *);
244 244 static void rfs4_op_setclientid_confirm(nfs_argop4 *, nfs_resop4 *,
245 245 struct svc_req *req, struct compound_state *);
246 246 static void rfs4_op_secinfo(nfs_argop4 *, nfs_resop4 *, struct svc_req *,
247 247 struct compound_state *);
248 248 static void rfs4_op_secinfo_free(nfs_resop4 *);
249 249
250 250 static nfsstat4 check_open_access(uint32_t, struct compound_state *,
251 251 struct svc_req *);
252 252 nfsstat4 rfs4_client_sysid(rfs4_client_t *, sysid_t *);
253 253 void rfs4_ss_clid(nfs4_srv_t *, rfs4_client_t *);
254 254
255 255
256 256 /*
257 257 * translation table for attrs
258 258 */
259 259 struct nfs4_ntov_table {
260 260 union nfs4_attr_u *na;
261 261 uint8_t amap[NFS4_MAXNUM_ATTRS];
262 262 int attrcnt;
263 263 bool_t vfsstat;
264 264 };
265 265
266 266 static void nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp);
267 267 static void nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp,
268 268 struct nfs4_svgetit_arg *sargp);
269 269
270 270 static nfsstat4 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp,
271 271 struct compound_state *cs, struct nfs4_svgetit_arg *sargp,
272 272 struct nfs4_ntov_table *ntovp, nfs4_attr_cmd_t cmd);
273 273
274 274 static void hanfsv4_failover(nfs4_srv_t *);
275 275
276 276 fem_t *deleg_rdops;
277 277 fem_t *deleg_wrops;
278 278
279 279 /*
280 280 * NFS4 op dispatch table
281 281 */
282 282
283 283 struct rfsv4disp {
284 284 void (*dis_proc)(); /* proc to call */
285 285 void (*dis_resfree)(); /* frees space allocated by proc */
286 286 int dis_flags; /* RPC_IDEMPOTENT, etc... */
287 287 };
288 288
289 289 static struct rfsv4disp rfsv4disptab[] = {
290 290 /*
291 291 * NFS VERSION 4
292 292 */
293 293
294 294 /* RFS_NULL = 0 */
295 295 {rfs4_op_illegal, nullfree, 0},
296 296
297 297 /* UNUSED = 1 */
298 298 {rfs4_op_illegal, nullfree, 0},
299 299
300 300 /* UNUSED = 2 */
301 301 {rfs4_op_illegal, nullfree, 0},
302 302
303 303 /* OP_ACCESS = 3 */
304 304 {rfs4_op_access, nullfree, RPC_IDEMPOTENT},
305 305
306 306 /* OP_CLOSE = 4 */
307 307 {rfs4_op_close, nullfree, 0},
308 308
309 309 /* OP_COMMIT = 5 */
310 310 {rfs4_op_commit, nullfree, RPC_IDEMPOTENT},
311 311
312 312 /* OP_CREATE = 6 */
313 313 {rfs4_op_create, nullfree, 0},
314 314
315 315 /* OP_DELEGPURGE = 7 */
316 316 {rfs4_op_delegpurge, nullfree, 0},
317 317
318 318 /* OP_DELEGRETURN = 8 */
319 319 {rfs4_op_delegreturn, nullfree, 0},
320 320
321 321 /* OP_GETATTR = 9 */
322 322 {rfs4_op_getattr, rfs4_op_getattr_free, RPC_IDEMPOTENT},
323 323
324 324 /* OP_GETFH = 10 */
325 325 {rfs4_op_getfh, rfs4_op_getfh_free, RPC_ALL},
326 326
327 327 /* OP_LINK = 11 */
328 328 {rfs4_op_link, nullfree, 0},
329 329
330 330 /* OP_LOCK = 12 */
331 331 {rfs4_op_lock, lock_denied_free, 0},
332 332
333 333 /* OP_LOCKT = 13 */
334 334 {rfs4_op_lockt, lock_denied_free, 0},
335 335
336 336 /* OP_LOCKU = 14 */
337 337 {rfs4_op_locku, nullfree, 0},
338 338
339 339 /* OP_LOOKUP = 15 */
340 340 {rfs4_op_lookup, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)},
341 341
342 342 /* OP_LOOKUPP = 16 */
343 343 {rfs4_op_lookupp, nullfree, (RPC_IDEMPOTENT | RPC_PUBLICFH_OK)},
344 344
345 345 /* OP_NVERIFY = 17 */
346 346 {rfs4_op_nverify, nullfree, RPC_IDEMPOTENT},
347 347
348 348 /* OP_OPEN = 18 */
349 349 {rfs4_op_open, rfs4_free_reply, 0},
350 350
351 351 /* OP_OPENATTR = 19 */
352 352 {rfs4_op_openattr, nullfree, 0},
353 353
354 354 /* OP_OPEN_CONFIRM = 20 */
355 355 {rfs4_op_open_confirm, nullfree, 0},
356 356
357 357 /* OP_OPEN_DOWNGRADE = 21 */
358 358 {rfs4_op_open_downgrade, nullfree, 0},
359 359
360 360 /* OP_OPEN_PUTFH = 22 */
361 361 {rfs4_op_putfh, nullfree, RPC_ALL},
362 362
363 363 /* OP_PUTPUBFH = 23 */
364 364 {rfs4_op_putpubfh, nullfree, RPC_ALL},
365 365
366 366 /* OP_PUTROOTFH = 24 */
367 367 {rfs4_op_putrootfh, nullfree, RPC_ALL},
368 368
369 369 /* OP_READ = 25 */
370 370 {rfs4_op_read, rfs4_op_read_free, RPC_IDEMPOTENT},
371 371
372 372 /* OP_READDIR = 26 */
373 373 {rfs4_op_readdir, rfs4_op_readdir_free, RPC_IDEMPOTENT},
374 374
375 375 /* OP_READLINK = 27 */
376 376 {rfs4_op_readlink, rfs4_op_readlink_free, RPC_IDEMPOTENT},
377 377
378 378 /* OP_REMOVE = 28 */
379 379 {rfs4_op_remove, nullfree, 0},
380 380
381 381 /* OP_RENAME = 29 */
382 382 {rfs4_op_rename, nullfree, 0},
383 383
384 384 /* OP_RENEW = 30 */
385 385 {rfs4_op_renew, nullfree, 0},
386 386
387 387 /* OP_RESTOREFH = 31 */
388 388 {rfs4_op_restorefh, nullfree, RPC_ALL},
389 389
390 390 /* OP_SAVEFH = 32 */
391 391 {rfs4_op_savefh, nullfree, RPC_ALL},
392 392
393 393 /* OP_SECINFO = 33 */
394 394 {rfs4_op_secinfo, rfs4_op_secinfo_free, 0},
395 395
396 396 /* OP_SETATTR = 34 */
397 397 {rfs4_op_setattr, nullfree, 0},
398 398
399 399 /* OP_SETCLIENTID = 35 */
400 400 {rfs4_op_setclientid, nullfree, 0},
401 401
402 402 /* OP_SETCLIENTID_CONFIRM = 36 */
403 403 {rfs4_op_setclientid_confirm, nullfree, 0},
404 404
405 405 /* OP_VERIFY = 37 */
406 406 {rfs4_op_verify, nullfree, RPC_IDEMPOTENT},
407 407
408 408 /* OP_WRITE = 38 */
409 409 {rfs4_op_write, nullfree, 0},
410 410
411 411 /* OP_RELEASE_LOCKOWNER = 39 */
412 412 {rfs4_op_release_lockowner, nullfree, 0},
413 413 };
414 414
415 415 static uint_t rfsv4disp_cnt = sizeof (rfsv4disptab) / sizeof (rfsv4disptab[0]);
416 416
417 417 #define OP_ILLEGAL_IDX (rfsv4disp_cnt)
418 418
419 419 #ifdef DEBUG
420 420
421 421 int rfs4_fillone_debug = 0;
422 422 int rfs4_no_stub_access = 1;
423 423 int rfs4_rddir_debug = 0;
424 424
425 425 static char *rfs4_op_string[] = {
426 426 "rfs4_op_null",
427 427 "rfs4_op_1 unused",
428 428 "rfs4_op_2 unused",
429 429 "rfs4_op_access",
430 430 "rfs4_op_close",
431 431 "rfs4_op_commit",
432 432 "rfs4_op_create",
433 433 "rfs4_op_delegpurge",
434 434 "rfs4_op_delegreturn",
435 435 "rfs4_op_getattr",
436 436 "rfs4_op_getfh",
437 437 "rfs4_op_link",
438 438 "rfs4_op_lock",
439 439 "rfs4_op_lockt",
440 440 "rfs4_op_locku",
441 441 "rfs4_op_lookup",
442 442 "rfs4_op_lookupp",
443 443 "rfs4_op_nverify",
444 444 "rfs4_op_open",
445 445 "rfs4_op_openattr",
446 446 "rfs4_op_open_confirm",
447 447 "rfs4_op_open_downgrade",
448 448 "rfs4_op_putfh",
449 449 "rfs4_op_putpubfh",
450 450 "rfs4_op_putrootfh",
451 451 "rfs4_op_read",
452 452 "rfs4_op_readdir",
453 453 "rfs4_op_readlink",
454 454 "rfs4_op_remove",
455 455 "rfs4_op_rename",
456 456 "rfs4_op_renew",
457 457 "rfs4_op_restorefh",
458 458 "rfs4_op_savefh",
459 459 "rfs4_op_secinfo",
460 460 "rfs4_op_setattr",
461 461 "rfs4_op_setclientid",
462 462 "rfs4_op_setclient_confirm",
463 463 "rfs4_op_verify",
464 464 "rfs4_op_write",
465 465 "rfs4_op_release_lockowner",
466 466 "rfs4_op_illegal"
467 467 };
468 468 #endif
469 469
470 470 void rfs4_ss_chkclid(nfs4_srv_t *, rfs4_client_t *);
471 471
472 472 extern size_t strlcpy(char *dst, const char *src, size_t dstsize);
473 473
474 474 extern void rfs4_free_fs_locations4(fs_locations4 *);
475 475
476 476 #ifdef nextdp
477 477 #undef nextdp
478 478 #endif
479 479 #define nextdp(dp) ((struct dirent64 *)((char *)(dp) + (dp)->d_reclen))
480 480
481 481 static const fs_operation_def_t nfs4_rd_deleg_tmpl[] = {
482 482 VOPNAME_OPEN, { .femop_open = deleg_rd_open },
483 483 VOPNAME_WRITE, { .femop_write = deleg_rd_write },
484 484 VOPNAME_SETATTR, { .femop_setattr = deleg_rd_setattr },
485 485 VOPNAME_RWLOCK, { .femop_rwlock = deleg_rd_rwlock },
486 486 VOPNAME_SPACE, { .femop_space = deleg_rd_space },
487 487 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_rd_setsecattr },
488 488 VOPNAME_VNEVENT, { .femop_vnevent = deleg_rd_vnevent },
489 489 NULL, NULL
490 490 };
491 491 static const fs_operation_def_t nfs4_wr_deleg_tmpl[] = {
492 492 VOPNAME_OPEN, { .femop_open = deleg_wr_open },
493 493 VOPNAME_READ, { .femop_read = deleg_wr_read },
494 494 VOPNAME_WRITE, { .femop_write = deleg_wr_write },
495 495 VOPNAME_SETATTR, { .femop_setattr = deleg_wr_setattr },
496 496 VOPNAME_RWLOCK, { .femop_rwlock = deleg_wr_rwlock },
497 497 VOPNAME_SPACE, { .femop_space = deleg_wr_space },
498 498 VOPNAME_SETSECATTR, { .femop_setsecattr = deleg_wr_setsecattr },
499 499 VOPNAME_VNEVENT, { .femop_vnevent = deleg_wr_vnevent },
500 500 NULL, NULL
501 501 };
502 502
503 503 nfs4_srv_t *
504 504 nfs4_get_srv(void)
505 505 {
506 506 nfs_globals_t *ng = zone_getspecific(nfssrv_zone_key, curzone);
507 507 nfs4_srv_t *srv = ng->nfs4_srv;
508 508 ASSERT(srv != NULL);
509 509 return (srv);
510 510 }
511 511
512 512 void
513 513 rfs4_srv_zone_init(nfs_globals_t *ng)
514 514 {
515 515 nfs4_srv_t *nsrv4;
516 516 timespec32_t verf;
517 517
518 518 nsrv4 = kmem_zalloc(sizeof (*nsrv4), KM_SLEEP);
519 519
520 520 /*
521 521 * The following algorithm attempts to find a unique verifier
522 522 * to be used as the write verifier returned from the server
523 523 * to the client. It is important that this verifier change
524 524 * whenever the server reboots. Of secondary importance, it
525 525 * is important for the verifier to be unique between two
526 526 * different servers.
527 527 *
528 528 * Thus, an attempt is made to use the system hostid and the
529 529 * current time in seconds when the nfssrv kernel module is
530 530 * loaded. It is assumed that an NFS server will not be able
531 531 * to boot and then to reboot in less than a second. If the
532 532 * hostid has not been set, then the current high resolution
533 533 * time is used. This will ensure different verifiers each
534 534 * time the server reboots and minimize the chances that two
535 535 * different servers will have the same verifier.
536 536 * XXX - this is broken on LP64 kernels.
537 537 */
538 538 verf.tv_sec = (time_t)zone_get_hostid(NULL);
539 539 if (verf.tv_sec != 0) {
540 540 verf.tv_nsec = gethrestime_sec();
541 541 } else {
542 542 timespec_t tverf;
543 543
544 544 gethrestime(&tverf);
545 545 verf.tv_sec = (time_t)tverf.tv_sec;
546 546 verf.tv_nsec = tverf.tv_nsec;
547 547 }
548 548 nsrv4->write4verf = *(uint64_t *)&verf;
549 549
550 550 /* Used to manage create/destroy of server state */
551 551 nsrv4->nfs4_server_state = NULL;
552 552 nsrv4->nfs4_cur_servinst = NULL;
553 553 nsrv4->nfs4_deleg_policy = SRV_NEVER_DELEGATE;
554 554 mutex_init(&nsrv4->deleg_lock, NULL, MUTEX_DEFAULT, NULL);
555 555 mutex_init(&nsrv4->state_lock, NULL, MUTEX_DEFAULT, NULL);
556 556 mutex_init(&nsrv4->servinst_lock, NULL, MUTEX_DEFAULT, NULL);
557 557 rw_init(&nsrv4->deleg_policy_lock, NULL, RW_DEFAULT, NULL);
558 558
559 559 ng->nfs4_srv = nsrv4;
560 560 }
561 561
562 562 void
563 563 rfs4_srv_zone_fini(nfs_globals_t *ng)
564 564 {
565 565 nfs4_srv_t *nsrv4 = ng->nfs4_srv;
566 566
567 567 ng->nfs4_srv = NULL;
568 568
569 569 mutex_destroy(&nsrv4->deleg_lock);
570 570 mutex_destroy(&nsrv4->state_lock);
571 571 mutex_destroy(&nsrv4->servinst_lock);
572 572 rw_destroy(&nsrv4->deleg_policy_lock);
573 573
574 574 kmem_free(nsrv4, sizeof (*nsrv4));
575 575 }
576 576
577 577 void
578 578 rfs4_srvrinit(void)
579 579 {
580 580 extern void rfs4_attr_init();
581 581
582 582 rfs4_attr_init();
583 583
584 584 if (fem_create("deleg_rdops", nfs4_rd_deleg_tmpl, &deleg_rdops) != 0) {
585 585 rfs4_disable_delegation();
586 586 } else if (fem_create("deleg_wrops", nfs4_wr_deleg_tmpl,
587 587 &deleg_wrops) != 0) {
588 588 rfs4_disable_delegation();
589 589 fem_free(deleg_rdops);
590 590 }
591 591
592 592 nfs4_srv_caller_id = fs_new_caller_id();
593 593 lockt_sysid = lm_alloc_sysidt();
594 594 vsd_create(&nfs4_srv_vkey, NULL);
595 595 rfs4_state_g_init();
596 596 }
597 597
598 598 void
599 599 rfs4_srvrfini(void)
600 600 {
601 601 if (lockt_sysid != LM_NOSYSID) {
602 602 lm_free_sysidt(lockt_sysid);
603 603 lockt_sysid = LM_NOSYSID;
604 604 }
605 605
606 606 rfs4_state_g_fini();
607 607
608 608 fem_free(deleg_rdops);
609 609 fem_free(deleg_wrops);
610 610 }
611 611
612 612 void
613 613 rfs4_do_server_start(int server_upordown,
614 614 int srv_delegation, int cluster_booted)
615 615 {
616 616 nfs4_srv_t *nsrv4 = nfs4_get_srv();
617 617
618 618 /* Is this a warm start? */
619 619 if (server_upordown == NFS_SERVER_QUIESCED) {
620 620 cmn_err(CE_NOTE, "nfs4_srv: "
621 621 "server was previously quiesced; "
622 622 "existing NFSv4 state will be re-used");
623 623
624 624 /*
625 625 * HA-NFSv4: this is also the signal
626 626 * that a Resource Group failover has
627 627 * occurred.
628 628 */
629 629 if (cluster_booted)
630 630 hanfsv4_failover(nsrv4);
631 631 } else {
632 632 /* Cold start */
633 633 nsrv4->rfs4_start_time = 0;
634 634 rfs4_state_zone_init(nsrv4);
635 635 nsrv4->nfs4_drc = rfs4_init_drc(nfs4_drc_max,
636 636 nfs4_drc_hash);
637 637
638 638 /*
639 639 * The nfsd service was started with the -s option
640 640 * we need to pull in any state from the paths indicated.
641 641 */
642 642 if (curzone == global_zone && rfs4_dss_numnewpaths > 0) {
643 643 /* read in the stable storage state from these paths */
644 644 rfs4_dss_readstate(nsrv4, rfs4_dss_numnewpaths,
645 645 rfs4_dss_newpaths);
646 646 }
647 647 }
648 648
649 649 /* Check if delegation is to be enabled */
650 650 if (srv_delegation != FALSE)
651 651 rfs4_set_deleg_policy(nsrv4, SRV_NORMAL_DELEGATE);
652 652 }
653 653
654 654 void
655 655 rfs4_init_compound_state(struct compound_state *cs)
656 656 {
657 657 bzero(cs, sizeof (*cs));
658 658 cs->cont = TRUE;
659 659 cs->access = CS_ACCESS_DENIED;
660 660 cs->deleg = FALSE;
661 661 cs->mandlock = FALSE;
662 662 cs->fh.nfs_fh4_val = cs->fhbuf;
663 663 }
664 664
665 665 void
666 666 rfs4_grace_start(rfs4_servinst_t *sip)
667 667 {
668 668 rw_enter(&sip->rwlock, RW_WRITER);
669 669 sip->start_time = (time_t)TICK_TO_SEC(ddi_get_lbolt());
670 670 sip->grace_period = rfs4_grace_period;
671 671 rw_exit(&sip->rwlock);
672 672 }
673 673
674 674 /*
675 675 * returns true if the instance's grace period has never been started
676 676 */
677 677 int
678 678 rfs4_servinst_grace_new(rfs4_servinst_t *sip)
679 679 {
680 680 time_t start_time;
681 681
682 682 rw_enter(&sip->rwlock, RW_READER);
683 683 start_time = sip->start_time;
684 684 rw_exit(&sip->rwlock);
685 685
686 686 return (start_time == 0);
687 687 }
688 688
689 689 /*
690 690 * Indicates if server instance is within the
691 691 * grace period.
692 692 */
693 693 int
694 694 rfs4_servinst_in_grace(rfs4_servinst_t *sip)
695 695 {
696 696 time_t grace_expiry;
697 697
698 698 rw_enter(&sip->rwlock, RW_READER);
699 699 grace_expiry = sip->start_time + sip->grace_period;
700 700 rw_exit(&sip->rwlock);
701 701
702 702 return (((time_t)TICK_TO_SEC(ddi_get_lbolt())) < grace_expiry);
703 703 }
704 704
705 705 int
706 706 rfs4_clnt_in_grace(rfs4_client_t *cp)
707 707 {
708 708 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0);
709 709
710 710 return (rfs4_servinst_in_grace(cp->rc_server_instance));
711 711 }
712 712
713 713 /*
714 714 * reset all currently active grace periods
715 715 */
716 716 void
717 717 rfs4_grace_reset_all(nfs4_srv_t *nsrv4)
718 718 {
719 719 rfs4_servinst_t *sip;
720 720
721 721 mutex_enter(&nsrv4->servinst_lock);
722 722 for (sip = nsrv4->nfs4_cur_servinst; sip != NULL; sip = sip->prev)
723 723 if (rfs4_servinst_in_grace(sip))
724 724 rfs4_grace_start(sip);
725 725 mutex_exit(&nsrv4->servinst_lock);
726 726 }
727 727
728 728 /*
729 729 * start any new instances' grace periods
730 730 */
731 731 void
732 732 rfs4_grace_start_new(nfs4_srv_t *nsrv4)
733 733 {
734 734 rfs4_servinst_t *sip;
735 735
736 736 mutex_enter(&nsrv4->servinst_lock);
737 737 for (sip = nsrv4->nfs4_cur_servinst; sip != NULL; sip = sip->prev)
738 738 if (rfs4_servinst_grace_new(sip))
739 739 rfs4_grace_start(sip);
740 740 mutex_exit(&nsrv4->servinst_lock);
741 741 }
742 742
743 743 static rfs4_dss_path_t *
744 744 rfs4_dss_newpath(nfs4_srv_t *nsrv4, rfs4_servinst_t *sip,
745 745 char *path, unsigned index)
746 746 {
747 747 size_t len;
748 748 rfs4_dss_path_t *dss_path;
749 749
750 750 dss_path = kmem_alloc(sizeof (rfs4_dss_path_t), KM_SLEEP);
751 751
752 752 /*
753 753 * Take a copy of the string, since the original may be overwritten.
754 754 * Sadly, no strdup() in the kernel.
755 755 */
756 756 /* allow for NUL */
757 757 len = strlen(path) + 1;
758 758 dss_path->path = kmem_alloc(len, KM_SLEEP);
759 759 (void) strlcpy(dss_path->path, path, len);
760 760
761 761 /* associate with servinst */
762 762 dss_path->sip = sip;
763 763 dss_path->index = index;
764 764
765 765 /*
766 766 * Add to list of served paths.
767 767 * No locking required, as we're only ever called at startup.
768 768 */
769 769 if (nsrv4->dss_pathlist == NULL) {
770 770 /* this is the first dss_path_t */
771 771
772 772 /* needed for insque/remque */
773 773 dss_path->next = dss_path->prev = dss_path;
774 774
775 775 nsrv4->dss_pathlist = dss_path;
776 776 } else {
777 777 insque(dss_path, nsrv4->dss_pathlist);
778 778 }
779 779
780 780 return (dss_path);
781 781 }
782 782
783 783 /*
784 784 * Create a new server instance, and make it the currently active instance.
785 785 * Note that starting the grace period too early will reduce the clients'
786 786 * recovery window.
787 787 */
788 788 void
789 789 rfs4_servinst_create(nfs4_srv_t *nsrv4, int start_grace,
790 790 int dss_npaths, char **dss_paths)
791 791 {
792 792 unsigned i;
793 793 rfs4_servinst_t *sip;
794 794 rfs4_oldstate_t *oldstate;
795 795
796 796 sip = kmem_alloc(sizeof (rfs4_servinst_t), KM_SLEEP);
797 797 rw_init(&sip->rwlock, NULL, RW_DEFAULT, NULL);
798 798
799 799 sip->start_time = (time_t)0;
800 800 sip->grace_period = (time_t)0;
801 801 sip->next = NULL;
802 802 sip->prev = NULL;
803 803
804 804 rw_init(&sip->oldstate_lock, NULL, RW_DEFAULT, NULL);
805 805 /*
806 806 * This initial dummy entry is required to setup for insque/remque.
807 807 * It must be skipped over whenever the list is traversed.
808 808 */
809 809 oldstate = kmem_alloc(sizeof (rfs4_oldstate_t), KM_SLEEP);
810 810 /* insque/remque require initial list entry to be self-terminated */
811 811 oldstate->next = oldstate;
812 812 oldstate->prev = oldstate;
813 813 sip->oldstate = oldstate;
814 814
815 815
816 816 sip->dss_npaths = dss_npaths;
817 817 sip->dss_paths = kmem_alloc(dss_npaths *
818 818 sizeof (rfs4_dss_path_t *), KM_SLEEP);
819 819
820 820 for (i = 0; i < dss_npaths; i++) {
821 821 sip->dss_paths[i] =
822 822 rfs4_dss_newpath(nsrv4, sip, dss_paths[i], i);
823 823 }
824 824
825 825 mutex_enter(&nsrv4->servinst_lock);
826 826 if (nsrv4->nfs4_cur_servinst != NULL) {
827 827 /* add to linked list */
828 828 sip->prev = nsrv4->nfs4_cur_servinst;
829 829 nsrv4->nfs4_cur_servinst->next = sip;
830 830 }
831 831 if (start_grace)
832 832 rfs4_grace_start(sip);
833 833 /* make the new instance "current" */
834 834 nsrv4->nfs4_cur_servinst = sip;
835 835
836 836 mutex_exit(&nsrv4->servinst_lock);
837 837 }
838 838
839 839 /*
840 840 * In future, we might add a rfs4_servinst_destroy(sip) but, for now, destroy
841 841 * all instances directly.
842 842 */
843 843 void
844 844 rfs4_servinst_destroy_all(nfs4_srv_t *nsrv4)
845 845 {
846 846 rfs4_servinst_t *sip, *prev, *current;
847 847 #ifdef DEBUG
848 848 int n = 0;
849 849 #endif
850 850
851 851 mutex_enter(&nsrv4->servinst_lock);
852 852 ASSERT(nsrv4->nfs4_cur_servinst != NULL);
853 853 current = nsrv4->nfs4_cur_servinst;
854 854 nsrv4->nfs4_cur_servinst = NULL;
855 855 for (sip = current; sip != NULL; sip = prev) {
856 856 prev = sip->prev;
857 857 rw_destroy(&sip->rwlock);
858 858 if (sip->oldstate)
859 859 kmem_free(sip->oldstate, sizeof (rfs4_oldstate_t));
860 860 if (sip->dss_paths) {
861 861 int i = sip->dss_npaths;
862 862
863 863 while (i > 0) {
864 864 i--;
865 865 if (sip->dss_paths[i] != NULL) {
866 866 char *path = sip->dss_paths[i]->path;
867 867
868 868 if (path != NULL) {
869 869 kmem_free(path,
870 870 strlen(path) + 1);
871 871 }
872 872 kmem_free(sip->dss_paths[i],
873 873 sizeof (rfs4_dss_path_t));
874 874 }
875 875 }
876 876 kmem_free(sip->dss_paths,
877 877 sip->dss_npaths * sizeof (rfs4_dss_path_t *));
878 878 }
879 879 kmem_free(sip, sizeof (rfs4_servinst_t));
880 880 #ifdef DEBUG
881 881 n++;
882 882 #endif
883 883 }
884 884 mutex_exit(&nsrv4->servinst_lock);
885 885 }
886 886
887 887 /*
888 888 * Assign the current server instance to a client_t.
889 889 * Should be called with cp->rc_dbe held.
890 890 */
891 891 void
892 892 rfs4_servinst_assign(nfs4_srv_t *nsrv4, rfs4_client_t *cp,
893 893 rfs4_servinst_t *sip)
894 894 {
895 895 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0);
896 896
897 897 /*
898 898 * The lock ensures that if the current instance is in the process
899 899 * of changing, we will see the new one.
900 900 */
901 901 mutex_enter(&nsrv4->servinst_lock);
902 902 cp->rc_server_instance = sip;
903 903 mutex_exit(&nsrv4->servinst_lock);
904 904 }
905 905
906 906 rfs4_servinst_t *
907 907 rfs4_servinst(rfs4_client_t *cp)
908 908 {
909 909 ASSERT(rfs4_dbe_refcnt(cp->rc_dbe) > 0);
910 910
911 911 return (cp->rc_server_instance);
912 912 }
913 913
914 914 /* ARGSUSED */
915 915 static void
916 916 nullfree(caddr_t resop)
917 917 {
918 918 }
919 919
920 920 /*
921 921 * This is a fall-through for invalid or not implemented (yet) ops
922 922 */
923 923 /* ARGSUSED */
924 924 static void
925 925 rfs4_op_inval(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
926 926 struct compound_state *cs)
927 927 {
928 928 *cs->statusp = *((nfsstat4 *)&(resop)->nfs_resop4_u) = NFS4ERR_INVAL;
929 929 }
930 930
931 931 /*
932 932 * Check if the security flavor, nfsnum, is in the flavor_list.
933 933 */
934 934 bool_t
935 935 in_flavor_list(int nfsnum, int *flavor_list, int count)
936 936 {
937 937 int i;
938 938
939 939 for (i = 0; i < count; i++) {
940 940 if (nfsnum == flavor_list[i])
941 941 return (TRUE);
942 942 }
943 943 return (FALSE);
944 944 }
945 945
946 946 /*
947 947 * Used by rfs4_op_secinfo to get the security information from the
948 948 * export structure associated with the component.
949 949 */
950 950 /* ARGSUSED */
951 951 static nfsstat4
952 952 do_rfs4_op_secinfo(struct compound_state *cs, char *nm, SECINFO4res *resp)
953 953 {
954 954 int error, different_export = 0;
955 955 vnode_t *dvp, *vp;
956 956 struct exportinfo *exi;
957 957 fid_t fid;
958 958 uint_t count, i;
959 959 secinfo4 *resok_val;
960 960 struct secinfo *secp;
961 961 seconfig_t *si;
962 962 bool_t did_traverse = FALSE;
963 963 int dotdot, walk;
964 964 nfs_export_t *ne = nfs_get_export();
965 965
966 966 dvp = cs->vp;
967 967 exi = cs->exi;
968 968 ASSERT(exi != NULL);
969 969 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0');
970 970
971 971 /*
972 972 * If dotdotting, then need to check whether it's above the
973 973 * root of a filesystem, or above an export point.
974 974 */
975 975 if (dotdot) {
976 976 ASSERT3U(exi->exi_zoneid, ==, curzone->zone_id);
977 977 /*
978 978 * If dotdotting at the root of a filesystem, then
979 979 * need to traverse back to the mounted-on filesystem
980 980 * and do the dotdot lookup there.
981 981 */
982 982 if ((dvp->v_flag & VROOT) || VN_IS_CURZONEROOT(dvp)) {
983 983
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984 984 /*
985 985 * If at the system root, then can
986 986 * go up no further.
987 987 */
988 988 if (VN_CMP(dvp, ZONE_ROOTVP()))
989 989 return (puterrno4(ENOENT));
990 990
991 991 /*
992 992 * Traverse back to the mounted-on filesystem
993 993 */
994 - dvp = untraverse(dvp);
994 + dvp = untraverse(ne, dvp);
995 995
996 996 /*
997 997 * Set the different_export flag so we remember
998 998 * to pick up a new exportinfo entry for
999 999 * this new filesystem.
1000 1000 */
1001 1001 different_export = 1;
1002 1002 } else {
1003 1003
1004 1004 /*
1005 1005 * If dotdotting above an export point then set
1006 1006 * the different_export to get new export info.
1007 1007 */
1008 1008 different_export = nfs_exported(exi, dvp);
1009 1009 }
1010 1010 }
1011 1011
1012 1012 /*
1013 1013 * Get the vnode for the component "nm".
1014 1014 */
1015 1015 error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cs->cr,
1016 1016 NULL, NULL, NULL);
1017 1017 if (error)
1018 1018 return (puterrno4(error));
1019 1019
1020 1020 /*
1021 1021 * If the vnode is in a pseudo filesystem, or if the security flavor
1022 1022 * used in the request is valid but not an explicitly shared flavor,
1023 1023 * or the access bit indicates that this is a limited access,
1024 1024 * check whether this vnode is visible.
1025 1025 */
1026 1026 if (!different_export &&
1027 1027 (PSEUDO(exi) || !is_exported_sec(cs->nfsflavor, exi) ||
1028 1028 cs->access & CS_ACCESS_LIMITED)) {
1029 1029 if (! nfs_visible(exi, vp, &different_export)) {
1030 1030 VN_RELE(vp);
1031 1031 return (puterrno4(ENOENT));
1032 1032 }
1033 1033 }
1034 1034
1035 1035 /*
1036 1036 * If it's a mountpoint, then traverse it.
1037 1037 */
1038 1038 if (vn_ismntpt(vp)) {
1039 1039 if ((error = traverse(&vp)) != 0) {
1040 1040 VN_RELE(vp);
1041 1041 return (puterrno4(error));
1042 1042 }
1043 1043 /* remember that we had to traverse mountpoint */
1044 1044 did_traverse = TRUE;
1045 1045 different_export = 1;
1046 1046 } else if (vp->v_vfsp != dvp->v_vfsp) {
1047 1047 /*
1048 1048 * If vp isn't a mountpoint and the vfs ptrs aren't the same,
1049 1049 * then vp is probably an LOFS object. We don't need the
1050 1050 * realvp, we just need to know that we might have crossed
1051 1051 * a server fs boundary and need to call checkexport4.
1052 1052 * (LOFS lookup hides server fs mountpoints, and actually calls
1053 1053 * traverse)
1054 1054 */
1055 1055 different_export = 1;
1056 1056 }
1057 1057
1058 1058 /*
1059 1059 * Get the export information for it.
1060 1060 */
1061 1061 if (different_export) {
1062 1062
1063 1063 bzero(&fid, sizeof (fid));
1064 1064 fid.fid_len = MAXFIDSZ;
1065 1065 error = vop_fid_pseudo(vp, &fid);
1066 1066 if (error) {
1067 1067 VN_RELE(vp);
1068 1068 return (puterrno4(error));
1069 1069 }
1070 1070
1071 1071 /* We'll need to reassign "exi". */
1072 1072 if (dotdot)
1073 1073 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE);
1074 1074 else
1075 1075 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp);
1076 1076
1077 1077 if (exi == NULL) {
1078 1078 if (did_traverse == TRUE) {
1079 1079 /*
1080 1080 * If this vnode is a mounted-on vnode,
1081 1081 * but the mounted-on file system is not
1082 1082 * exported, send back the secinfo for
1083 1083 * the exported node that the mounted-on
1084 1084 * vnode lives in.
1085 1085 */
1086 1086 exi = cs->exi;
1087 1087 } else {
1088 1088 VN_RELE(vp);
1089 1089 return (puterrno4(EACCES));
1090 1090 }
1091 1091 }
1092 1092 }
1093 1093 ASSERT(exi != NULL);
1094 1094
1095 1095
1096 1096 /*
1097 1097 * Create the secinfo result based on the security information
1098 1098 * from the exportinfo structure (exi).
1099 1099 *
1100 1100 * Return all flavors for a pseudo node.
1101 1101 * For a real export node, return the flavor that the client
1102 1102 * has access with.
1103 1103 */
1104 1104 ASSERT(RW_LOCK_HELD(&ne->exported_lock));
1105 1105 if (PSEUDO(exi)) {
1106 1106 count = exi->exi_export.ex_seccnt; /* total sec count */
1107 1107 resok_val = kmem_alloc(count * sizeof (secinfo4), KM_SLEEP);
1108 1108 secp = exi->exi_export.ex_secinfo;
1109 1109
1110 1110 for (i = 0; i < count; i++) {
1111 1111 si = &secp[i].s_secinfo;
1112 1112 resok_val[i].flavor = si->sc_rpcnum;
1113 1113 if (resok_val[i].flavor == RPCSEC_GSS) {
1114 1114 rpcsec_gss_info *info;
1115 1115
1116 1116 info = &resok_val[i].flavor_info;
1117 1117 info->qop = si->sc_qop;
1118 1118 info->service = (rpc_gss_svc_t)si->sc_service;
1119 1119
1120 1120 /* get oid opaque data */
1121 1121 info->oid.sec_oid4_len =
1122 1122 si->sc_gss_mech_type->length;
1123 1123 info->oid.sec_oid4_val = kmem_alloc(
1124 1124 si->sc_gss_mech_type->length, KM_SLEEP);
1125 1125 bcopy(
1126 1126 si->sc_gss_mech_type->elements,
1127 1127 info->oid.sec_oid4_val,
1128 1128 info->oid.sec_oid4_len);
1129 1129 }
1130 1130 }
1131 1131 resp->SECINFO4resok_len = count;
1132 1132 resp->SECINFO4resok_val = resok_val;
1133 1133 } else {
1134 1134 int ret_cnt = 0, k = 0;
1135 1135 int *flavor_list;
1136 1136
1137 1137 count = exi->exi_export.ex_seccnt; /* total sec count */
1138 1138 secp = exi->exi_export.ex_secinfo;
1139 1139
1140 1140 flavor_list = kmem_alloc(count * sizeof (int), KM_SLEEP);
1141 1141 /* find out which flavors to return */
1142 1142 for (i = 0; i < count; i ++) {
1143 1143 int access, flavor, perm;
1144 1144
1145 1145 flavor = secp[i].s_secinfo.sc_nfsnum;
1146 1146 perm = secp[i].s_flags;
1147 1147
1148 1148 access = nfsauth4_secinfo_access(exi, cs->req,
1149 1149 flavor, perm, cs->basecr);
1150 1150
1151 1151 if (! (access & NFSAUTH_DENIED) &&
1152 1152 ! (access & NFSAUTH_WRONGSEC)) {
1153 1153 flavor_list[ret_cnt] = flavor;
1154 1154 ret_cnt++;
1155 1155 }
1156 1156 }
1157 1157
1158 1158 /* Create the returning SECINFO value */
1159 1159 resok_val = kmem_alloc(ret_cnt * sizeof (secinfo4), KM_SLEEP);
1160 1160
1161 1161 for (i = 0; i < count; i++) {
1162 1162 /*
1163 1163 * If the flavor is in the flavor list,
1164 1164 * fill in resok_val.
1165 1165 */
1166 1166 si = &secp[i].s_secinfo;
1167 1167 if (in_flavor_list(si->sc_nfsnum,
1168 1168 flavor_list, ret_cnt)) {
1169 1169 resok_val[k].flavor = si->sc_rpcnum;
1170 1170 if (resok_val[k].flavor == RPCSEC_GSS) {
1171 1171 rpcsec_gss_info *info;
1172 1172
1173 1173 info = &resok_val[k].flavor_info;
1174 1174 info->qop = si->sc_qop;
1175 1175 info->service = (rpc_gss_svc_t)
1176 1176 si->sc_service;
1177 1177
1178 1178 /* get oid opaque data */
1179 1179 info->oid.sec_oid4_len =
1180 1180 si->sc_gss_mech_type->length;
1181 1181 info->oid.sec_oid4_val = kmem_alloc(
1182 1182 si->sc_gss_mech_type->length,
1183 1183 KM_SLEEP);
1184 1184 bcopy(si->sc_gss_mech_type->elements,
1185 1185 info->oid.sec_oid4_val,
1186 1186 info->oid.sec_oid4_len);
1187 1187 }
1188 1188 k++;
1189 1189 }
1190 1190 if (k >= ret_cnt)
1191 1191 break;
1192 1192 }
1193 1193 resp->SECINFO4resok_len = ret_cnt;
1194 1194 resp->SECINFO4resok_val = resok_val;
1195 1195 kmem_free(flavor_list, count * sizeof (int));
1196 1196 }
1197 1197
1198 1198 VN_RELE(vp);
1199 1199 return (NFS4_OK);
1200 1200 }
1201 1201
1202 1202 /*
1203 1203 * SECINFO (Operation 33): Obtain required security information on
1204 1204 * the component name in the format of (security-mechanism-oid, qop, service)
1205 1205 * triplets.
1206 1206 */
1207 1207 /* ARGSUSED */
1208 1208 static void
1209 1209 rfs4_op_secinfo(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
1210 1210 struct compound_state *cs)
1211 1211 {
1212 1212 SECINFO4args *args = &argop->nfs_argop4_u.opsecinfo;
1213 1213 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo;
1214 1214 utf8string *utfnm = &args->name;
1215 1215 uint_t len;
1216 1216 char *nm;
1217 1217 struct sockaddr *ca;
1218 1218 char *name = NULL;
1219 1219 nfsstat4 status = NFS4_OK;
1220 1220
1221 1221 DTRACE_NFSV4_2(op__secinfo__start, struct compound_state *, cs,
1222 1222 SECINFO4args *, args);
1223 1223
1224 1224 /*
1225 1225 * Current file handle (cfh) should have been set before getting
1226 1226 * into this function. If not, return error.
1227 1227 */
1228 1228 if (cs->vp == NULL) {
1229 1229 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
1230 1230 goto out;
1231 1231 }
1232 1232
1233 1233 if (cs->vp->v_type != VDIR) {
1234 1234 *cs->statusp = resp->status = NFS4ERR_NOTDIR;
1235 1235 goto out;
1236 1236 }
1237 1237
1238 1238 /*
1239 1239 * Verify the component name. If failed, error out, but
1240 1240 * do not error out if the component name is a "..".
1241 1241 * SECINFO will return its parents secinfo data for SECINFO "..".
1242 1242 */
1243 1243 status = utf8_dir_verify(utfnm);
1244 1244 if (status != NFS4_OK) {
1245 1245 if (utfnm->utf8string_len != 2 ||
1246 1246 utfnm->utf8string_val[0] != '.' ||
1247 1247 utfnm->utf8string_val[1] != '.') {
1248 1248 *cs->statusp = resp->status = status;
1249 1249 goto out;
1250 1250 }
1251 1251 }
1252 1252
1253 1253 nm = utf8_to_str(utfnm, &len, NULL);
1254 1254 if (nm == NULL) {
1255 1255 *cs->statusp = resp->status = NFS4ERR_INVAL;
1256 1256 goto out;
1257 1257 }
1258 1258
1259 1259 if (len > MAXNAMELEN) {
1260 1260 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG;
1261 1261 kmem_free(nm, len);
1262 1262 goto out;
1263 1263 }
1264 1264
1265 1265 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
1266 1266 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND,
1267 1267 MAXPATHLEN + 1);
1268 1268
1269 1269 if (name == NULL) {
1270 1270 *cs->statusp = resp->status = NFS4ERR_INVAL;
1271 1271 kmem_free(nm, len);
1272 1272 goto out;
1273 1273 }
1274 1274
1275 1275
1276 1276 *cs->statusp = resp->status = do_rfs4_op_secinfo(cs, name, resp);
1277 1277
1278 1278 if (name != nm)
1279 1279 kmem_free(name, MAXPATHLEN + 1);
1280 1280 kmem_free(nm, len);
1281 1281
1282 1282 out:
1283 1283 DTRACE_NFSV4_2(op__secinfo__done, struct compound_state *, cs,
1284 1284 SECINFO4res *, resp);
1285 1285 }
1286 1286
1287 1287 /*
1288 1288 * Free SECINFO result.
1289 1289 */
1290 1290 /* ARGSUSED */
1291 1291 static void
1292 1292 rfs4_op_secinfo_free(nfs_resop4 *resop)
1293 1293 {
1294 1294 SECINFO4res *resp = &resop->nfs_resop4_u.opsecinfo;
1295 1295 int count, i;
1296 1296 secinfo4 *resok_val;
1297 1297
1298 1298 /* If this is not an Ok result, nothing to free. */
1299 1299 if (resp->status != NFS4_OK) {
1300 1300 return;
1301 1301 }
1302 1302
1303 1303 count = resp->SECINFO4resok_len;
1304 1304 resok_val = resp->SECINFO4resok_val;
1305 1305
1306 1306 for (i = 0; i < count; i++) {
1307 1307 if (resok_val[i].flavor == RPCSEC_GSS) {
1308 1308 rpcsec_gss_info *info;
1309 1309
1310 1310 info = &resok_val[i].flavor_info;
1311 1311 kmem_free(info->oid.sec_oid4_val,
1312 1312 info->oid.sec_oid4_len);
1313 1313 }
1314 1314 }
1315 1315 kmem_free(resok_val, count * sizeof (secinfo4));
1316 1316 resp->SECINFO4resok_len = 0;
1317 1317 resp->SECINFO4resok_val = NULL;
1318 1318 }
1319 1319
1320 1320 /* ARGSUSED */
1321 1321 static void
1322 1322 rfs4_op_access(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
1323 1323 struct compound_state *cs)
1324 1324 {
1325 1325 ACCESS4args *args = &argop->nfs_argop4_u.opaccess;
1326 1326 ACCESS4res *resp = &resop->nfs_resop4_u.opaccess;
1327 1327 int error;
1328 1328 vnode_t *vp;
1329 1329 struct vattr va;
1330 1330 int checkwriteperm;
1331 1331 cred_t *cr = cs->cr;
1332 1332 bslabel_t *clabel, *slabel;
1333 1333 ts_label_t *tslabel;
1334 1334 boolean_t admin_low_client;
1335 1335
1336 1336 DTRACE_NFSV4_2(op__access__start, struct compound_state *, cs,
1337 1337 ACCESS4args *, args);
1338 1338
1339 1339 #if 0 /* XXX allow access even if !cs->access. Eventually only pseudo fs */
1340 1340 if (cs->access == CS_ACCESS_DENIED) {
1341 1341 *cs->statusp = resp->status = NFS4ERR_ACCESS;
1342 1342 goto out;
1343 1343 }
1344 1344 #endif
1345 1345 if (cs->vp == NULL) {
1346 1346 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
1347 1347 goto out;
1348 1348 }
1349 1349
1350 1350 ASSERT(cr != NULL);
1351 1351
1352 1352 vp = cs->vp;
1353 1353
1354 1354 /*
1355 1355 * If the file system is exported read only, it is not appropriate
1356 1356 * to check write permissions for regular files and directories.
1357 1357 * Special files are interpreted by the client, so the underlying
1358 1358 * permissions are sent back to the client for interpretation.
1359 1359 */
1360 1360 if (rdonly4(req, cs) &&
1361 1361 (vp->v_type == VREG || vp->v_type == VDIR))
1362 1362 checkwriteperm = 0;
1363 1363 else
1364 1364 checkwriteperm = 1;
1365 1365
1366 1366 /*
1367 1367 * XXX
1368 1368 * We need the mode so that we can correctly determine access
1369 1369 * permissions relative to a mandatory lock file. Access to
1370 1370 * mandatory lock files is denied on the server, so it might
1371 1371 * as well be reflected to the server during the open.
1372 1372 */
1373 1373 va.va_mask = AT_MODE;
1374 1374 error = VOP_GETATTR(vp, &va, 0, cr, NULL);
1375 1375 if (error) {
1376 1376 *cs->statusp = resp->status = puterrno4(error);
1377 1377 goto out;
1378 1378 }
1379 1379 resp->access = 0;
1380 1380 resp->supported = 0;
1381 1381
1382 1382 if (is_system_labeled()) {
1383 1383 ASSERT(req->rq_label != NULL);
1384 1384 clabel = req->rq_label;
1385 1385 DTRACE_PROBE2(tx__rfs4__log__info__opaccess__clabel, char *,
1386 1386 "got client label from request(1)",
1387 1387 struct svc_req *, req);
1388 1388 if (!blequal(&l_admin_low->tsl_label, clabel)) {
1389 1389 if ((tslabel = nfs_getflabel(vp, cs->exi)) == NULL) {
1390 1390 *cs->statusp = resp->status = puterrno4(EACCES);
1391 1391 goto out;
1392 1392 }
1393 1393 slabel = label2bslabel(tslabel);
1394 1394 DTRACE_PROBE3(tx__rfs4__log__info__opaccess__slabel,
1395 1395 char *, "got server label(1) for vp(2)",
1396 1396 bslabel_t *, slabel, vnode_t *, vp);
1397 1397
1398 1398 admin_low_client = B_FALSE;
1399 1399 } else
1400 1400 admin_low_client = B_TRUE;
1401 1401 }
1402 1402
1403 1403 if (args->access & ACCESS4_READ) {
1404 1404 error = VOP_ACCESS(vp, VREAD, 0, cr, NULL);
1405 1405 if (!error && !MANDLOCK(vp, va.va_mode) &&
1406 1406 (!is_system_labeled() || admin_low_client ||
1407 1407 bldominates(clabel, slabel)))
1408 1408 resp->access |= ACCESS4_READ;
1409 1409 resp->supported |= ACCESS4_READ;
1410 1410 }
1411 1411 if ((args->access & ACCESS4_LOOKUP) && vp->v_type == VDIR) {
1412 1412 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL);
1413 1413 if (!error && (!is_system_labeled() || admin_low_client ||
1414 1414 bldominates(clabel, slabel)))
1415 1415 resp->access |= ACCESS4_LOOKUP;
1416 1416 resp->supported |= ACCESS4_LOOKUP;
1417 1417 }
1418 1418 if (checkwriteperm &&
1419 1419 (args->access & (ACCESS4_MODIFY|ACCESS4_EXTEND))) {
1420 1420 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL);
1421 1421 if (!error && !MANDLOCK(vp, va.va_mode) &&
1422 1422 (!is_system_labeled() || admin_low_client ||
1423 1423 blequal(clabel, slabel)))
1424 1424 resp->access |=
1425 1425 (args->access & (ACCESS4_MODIFY | ACCESS4_EXTEND));
1426 1426 resp->supported |=
1427 1427 resp->access & (ACCESS4_MODIFY | ACCESS4_EXTEND);
1428 1428 }
1429 1429
1430 1430 if (checkwriteperm &&
1431 1431 (args->access & ACCESS4_DELETE) && vp->v_type == VDIR) {
1432 1432 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL);
1433 1433 if (!error && (!is_system_labeled() || admin_low_client ||
1434 1434 blequal(clabel, slabel)))
1435 1435 resp->access |= ACCESS4_DELETE;
1436 1436 resp->supported |= ACCESS4_DELETE;
1437 1437 }
1438 1438 if (args->access & ACCESS4_EXECUTE && vp->v_type != VDIR) {
1439 1439 error = VOP_ACCESS(vp, VEXEC, 0, cr, NULL);
1440 1440 if (!error && !MANDLOCK(vp, va.va_mode) &&
1441 1441 (!is_system_labeled() || admin_low_client ||
1442 1442 bldominates(clabel, slabel)))
1443 1443 resp->access |= ACCESS4_EXECUTE;
1444 1444 resp->supported |= ACCESS4_EXECUTE;
1445 1445 }
1446 1446
1447 1447 if (is_system_labeled() && !admin_low_client)
1448 1448 label_rele(tslabel);
1449 1449
1450 1450 *cs->statusp = resp->status = NFS4_OK;
1451 1451 out:
1452 1452 DTRACE_NFSV4_2(op__access__done, struct compound_state *, cs,
1453 1453 ACCESS4res *, resp);
1454 1454 }
1455 1455
1456 1456 /* ARGSUSED */
1457 1457 static void
1458 1458 rfs4_op_commit(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
1459 1459 struct compound_state *cs)
1460 1460 {
1461 1461 COMMIT4args *args = &argop->nfs_argop4_u.opcommit;
1462 1462 COMMIT4res *resp = &resop->nfs_resop4_u.opcommit;
1463 1463 int error;
1464 1464 vnode_t *vp = cs->vp;
1465 1465 cred_t *cr = cs->cr;
1466 1466 vattr_t va;
1467 1467 nfs4_srv_t *nsrv4;
1468 1468
1469 1469 DTRACE_NFSV4_2(op__commit__start, struct compound_state *, cs,
1470 1470 COMMIT4args *, args);
1471 1471
1472 1472 if (vp == NULL) {
1473 1473 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
1474 1474 goto out;
1475 1475 }
1476 1476 if (cs->access == CS_ACCESS_DENIED) {
1477 1477 *cs->statusp = resp->status = NFS4ERR_ACCESS;
1478 1478 goto out;
1479 1479 }
1480 1480
1481 1481 if (args->offset + args->count < args->offset) {
1482 1482 *cs->statusp = resp->status = NFS4ERR_INVAL;
1483 1483 goto out;
1484 1484 }
1485 1485
1486 1486 va.va_mask = AT_UID;
1487 1487 error = VOP_GETATTR(vp, &va, 0, cr, NULL);
1488 1488
1489 1489 /*
1490 1490 * If we can't get the attributes, then we can't do the
1491 1491 * right access checking. So, we'll fail the request.
1492 1492 */
1493 1493 if (error) {
1494 1494 *cs->statusp = resp->status = puterrno4(error);
1495 1495 goto out;
1496 1496 }
1497 1497 if (rdonly4(req, cs)) {
1498 1498 *cs->statusp = resp->status = NFS4ERR_ROFS;
1499 1499 goto out;
1500 1500 }
1501 1501
1502 1502 if (vp->v_type != VREG) {
1503 1503 if (vp->v_type == VDIR)
1504 1504 resp->status = NFS4ERR_ISDIR;
1505 1505 else
1506 1506 resp->status = NFS4ERR_INVAL;
1507 1507 *cs->statusp = resp->status;
1508 1508 goto out;
1509 1509 }
1510 1510
1511 1511 if (crgetuid(cr) != va.va_uid &&
1512 1512 (error = VOP_ACCESS(vp, VWRITE, 0, cs->cr, NULL))) {
1513 1513 *cs->statusp = resp->status = puterrno4(error);
1514 1514 goto out;
1515 1515 }
1516 1516
1517 1517 error = VOP_FSYNC(vp, FSYNC, cr, NULL);
1518 1518
1519 1519 if (error) {
1520 1520 *cs->statusp = resp->status = puterrno4(error);
1521 1521 goto out;
1522 1522 }
1523 1523
1524 1524 nsrv4 = nfs4_get_srv();
1525 1525 *cs->statusp = resp->status = NFS4_OK;
1526 1526 resp->writeverf = nsrv4->write4verf;
1527 1527 out:
1528 1528 DTRACE_NFSV4_2(op__commit__done, struct compound_state *, cs,
1529 1529 COMMIT4res *, resp);
1530 1530 }
1531 1531
1532 1532 /*
1533 1533 * rfs4_op_mknod is called from rfs4_op_create after all initial verification
1534 1534 * was completed. It does the nfsv4 create for special files.
1535 1535 */
1536 1536 /* ARGSUSED */
1537 1537 static vnode_t *
1538 1538 do_rfs4_op_mknod(CREATE4args *args, CREATE4res *resp, struct svc_req *req,
1539 1539 struct compound_state *cs, vattr_t *vap, char *nm)
1540 1540 {
1541 1541 int error;
1542 1542 cred_t *cr = cs->cr;
1543 1543 vnode_t *dvp = cs->vp;
1544 1544 vnode_t *vp = NULL;
1545 1545 int mode;
1546 1546 enum vcexcl excl;
1547 1547
1548 1548 switch (args->type) {
1549 1549 case NF4CHR:
1550 1550 case NF4BLK:
1551 1551 if (secpolicy_sys_devices(cr) != 0) {
1552 1552 *cs->statusp = resp->status = NFS4ERR_PERM;
1553 1553 return (NULL);
1554 1554 }
1555 1555 if (args->type == NF4CHR)
1556 1556 vap->va_type = VCHR;
1557 1557 else
1558 1558 vap->va_type = VBLK;
1559 1559 vap->va_rdev = makedevice(args->ftype4_u.devdata.specdata1,
1560 1560 args->ftype4_u.devdata.specdata2);
1561 1561 vap->va_mask |= AT_RDEV;
1562 1562 break;
1563 1563 case NF4SOCK:
1564 1564 vap->va_type = VSOCK;
1565 1565 break;
1566 1566 case NF4FIFO:
1567 1567 vap->va_type = VFIFO;
1568 1568 break;
1569 1569 default:
1570 1570 *cs->statusp = resp->status = NFS4ERR_BADTYPE;
1571 1571 return (NULL);
1572 1572 }
1573 1573
1574 1574 /*
1575 1575 * Must specify the mode.
1576 1576 */
1577 1577 if (!(vap->va_mask & AT_MODE)) {
1578 1578 *cs->statusp = resp->status = NFS4ERR_INVAL;
1579 1579 return (NULL);
1580 1580 }
1581 1581
1582 1582 excl = EXCL;
1583 1583
1584 1584 mode = 0;
1585 1585
1586 1586 error = VOP_CREATE(dvp, nm, vap, excl, mode, &vp, cr, 0, NULL, NULL);
1587 1587 if (error) {
1588 1588 *cs->statusp = resp->status = puterrno4(error);
1589 1589 return (NULL);
1590 1590 }
1591 1591 return (vp);
1592 1592 }
1593 1593
1594 1594 /*
1595 1595 * nfsv4 create is used to create non-regular files. For regular files,
1596 1596 * use nfsv4 open.
1597 1597 */
1598 1598 /* ARGSUSED */
1599 1599 static void
1600 1600 rfs4_op_create(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
1601 1601 struct compound_state *cs)
1602 1602 {
1603 1603 CREATE4args *args = &argop->nfs_argop4_u.opcreate;
1604 1604 CREATE4res *resp = &resop->nfs_resop4_u.opcreate;
1605 1605 int error;
1606 1606 struct vattr bva, iva, iva2, ava, *vap;
1607 1607 cred_t *cr = cs->cr;
1608 1608 vnode_t *dvp = cs->vp;
1609 1609 vnode_t *vp = NULL;
1610 1610 vnode_t *realvp;
1611 1611 char *nm, *lnm;
1612 1612 uint_t len, llen;
1613 1613 int syncval = 0;
1614 1614 struct nfs4_svgetit_arg sarg;
1615 1615 struct nfs4_ntov_table ntov;
1616 1616 struct statvfs64 sb;
1617 1617 nfsstat4 status;
1618 1618 struct sockaddr *ca;
1619 1619 char *name = NULL;
1620 1620 char *lname = NULL;
1621 1621
1622 1622 DTRACE_NFSV4_2(op__create__start, struct compound_state *, cs,
1623 1623 CREATE4args *, args);
1624 1624
1625 1625 resp->attrset = 0;
1626 1626
1627 1627 if (dvp == NULL) {
1628 1628 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
1629 1629 goto out;
1630 1630 }
1631 1631
1632 1632 /*
1633 1633 * If there is an unshared filesystem mounted on this vnode,
1634 1634 * do not allow to create an object in this directory.
1635 1635 */
1636 1636 if (vn_ismntpt(dvp)) {
1637 1637 *cs->statusp = resp->status = NFS4ERR_ACCESS;
1638 1638 goto out;
1639 1639 }
1640 1640
1641 1641 /* Verify that type is correct */
1642 1642 switch (args->type) {
1643 1643 case NF4LNK:
1644 1644 case NF4BLK:
1645 1645 case NF4CHR:
1646 1646 case NF4SOCK:
1647 1647 case NF4FIFO:
1648 1648 case NF4DIR:
1649 1649 break;
1650 1650 default:
1651 1651 *cs->statusp = resp->status = NFS4ERR_BADTYPE;
1652 1652 goto out;
1653 1653 };
1654 1654
1655 1655 if (cs->access == CS_ACCESS_DENIED) {
1656 1656 *cs->statusp = resp->status = NFS4ERR_ACCESS;
1657 1657 goto out;
1658 1658 }
1659 1659 if (dvp->v_type != VDIR) {
1660 1660 *cs->statusp = resp->status = NFS4ERR_NOTDIR;
1661 1661 goto out;
1662 1662 }
1663 1663 status = utf8_dir_verify(&args->objname);
1664 1664 if (status != NFS4_OK) {
1665 1665 *cs->statusp = resp->status = status;
1666 1666 goto out;
1667 1667 }
1668 1668
1669 1669 if (rdonly4(req, cs)) {
1670 1670 *cs->statusp = resp->status = NFS4ERR_ROFS;
1671 1671 goto out;
1672 1672 }
1673 1673
1674 1674 /*
1675 1675 * Name of newly created object
1676 1676 */
1677 1677 nm = utf8_to_fn(&args->objname, &len, NULL);
1678 1678 if (nm == NULL) {
1679 1679 *cs->statusp = resp->status = NFS4ERR_INVAL;
1680 1680 goto out;
1681 1681 }
1682 1682
1683 1683 if (len > MAXNAMELEN) {
1684 1684 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG;
1685 1685 kmem_free(nm, len);
1686 1686 goto out;
1687 1687 }
1688 1688
1689 1689 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
1690 1690 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND,
1691 1691 MAXPATHLEN + 1);
1692 1692
1693 1693 if (name == NULL) {
1694 1694 *cs->statusp = resp->status = NFS4ERR_INVAL;
1695 1695 kmem_free(nm, len);
1696 1696 goto out;
1697 1697 }
1698 1698
1699 1699 resp->attrset = 0;
1700 1700
1701 1701 sarg.sbp = &sb;
1702 1702 sarg.is_referral = B_FALSE;
1703 1703 nfs4_ntov_table_init(&ntov);
1704 1704
1705 1705 status = do_rfs4_set_attrs(&resp->attrset,
1706 1706 &args->createattrs, cs, &sarg, &ntov, NFS4ATTR_SETIT);
1707 1707
1708 1708 if (sarg.vap->va_mask == 0 && status == NFS4_OK)
1709 1709 status = NFS4ERR_INVAL;
1710 1710
1711 1711 if (status != NFS4_OK) {
1712 1712 *cs->statusp = resp->status = status;
1713 1713 if (name != nm)
1714 1714 kmem_free(name, MAXPATHLEN + 1);
1715 1715 kmem_free(nm, len);
1716 1716 nfs4_ntov_table_free(&ntov, &sarg);
1717 1717 resp->attrset = 0;
1718 1718 goto out;
1719 1719 }
1720 1720
1721 1721 /* Get "before" change value */
1722 1722 bva.va_mask = AT_CTIME|AT_SEQ|AT_MODE;
1723 1723 error = VOP_GETATTR(dvp, &bva, 0, cr, NULL);
1724 1724 if (error) {
1725 1725 *cs->statusp = resp->status = puterrno4(error);
1726 1726 if (name != nm)
1727 1727 kmem_free(name, MAXPATHLEN + 1);
1728 1728 kmem_free(nm, len);
1729 1729 nfs4_ntov_table_free(&ntov, &sarg);
1730 1730 resp->attrset = 0;
1731 1731 goto out;
1732 1732 }
1733 1733 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bva.va_ctime)
1734 1734
1735 1735 vap = sarg.vap;
1736 1736
1737 1737 /*
1738 1738 * Set the default initial values for attributes when the parent
1739 1739 * directory does not have the VSUID/VSGID bit set and they have
1740 1740 * not been specified in createattrs.
1741 1741 */
1742 1742 if (!(bva.va_mode & VSUID) && (vap->va_mask & AT_UID) == 0) {
1743 1743 vap->va_uid = crgetuid(cr);
1744 1744 vap->va_mask |= AT_UID;
1745 1745 }
1746 1746 if (!(bva.va_mode & VSGID) && (vap->va_mask & AT_GID) == 0) {
1747 1747 vap->va_gid = crgetgid(cr);
1748 1748 vap->va_mask |= AT_GID;
1749 1749 }
1750 1750
1751 1751 vap->va_mask |= AT_TYPE;
1752 1752 switch (args->type) {
1753 1753 case NF4DIR:
1754 1754 vap->va_type = VDIR;
1755 1755 if ((vap->va_mask & AT_MODE) == 0) {
1756 1756 vap->va_mode = 0700; /* default: owner rwx only */
1757 1757 vap->va_mask |= AT_MODE;
1758 1758 }
1759 1759 error = VOP_MKDIR(dvp, name, vap, &vp, cr, NULL, 0, NULL);
1760 1760 if (error)
1761 1761 break;
1762 1762
1763 1763 /*
1764 1764 * Get the initial "after" sequence number, if it fails,
1765 1765 * set to zero
1766 1766 */
1767 1767 iva.va_mask = AT_SEQ;
1768 1768 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL))
1769 1769 iva.va_seq = 0;
1770 1770 break;
1771 1771 case NF4LNK:
1772 1772 vap->va_type = VLNK;
1773 1773 if ((vap->va_mask & AT_MODE) == 0) {
1774 1774 vap->va_mode = 0700; /* default: owner rwx only */
1775 1775 vap->va_mask |= AT_MODE;
1776 1776 }
1777 1777
1778 1778 /*
1779 1779 * symlink names must be treated as data
1780 1780 */
1781 1781 lnm = utf8_to_str((utf8string *)&args->ftype4_u.linkdata,
1782 1782 &llen, NULL);
1783 1783
1784 1784 if (lnm == NULL) {
1785 1785 *cs->statusp = resp->status = NFS4ERR_INVAL;
1786 1786 if (name != nm)
1787 1787 kmem_free(name, MAXPATHLEN + 1);
1788 1788 kmem_free(nm, len);
1789 1789 nfs4_ntov_table_free(&ntov, &sarg);
1790 1790 resp->attrset = 0;
1791 1791 goto out;
1792 1792 }
1793 1793
1794 1794 if (llen > MAXPATHLEN) {
1795 1795 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG;
1796 1796 if (name != nm)
1797 1797 kmem_free(name, MAXPATHLEN + 1);
1798 1798 kmem_free(nm, len);
1799 1799 kmem_free(lnm, llen);
1800 1800 nfs4_ntov_table_free(&ntov, &sarg);
1801 1801 resp->attrset = 0;
1802 1802 goto out;
1803 1803 }
1804 1804
1805 1805 lname = nfscmd_convname(ca, cs->exi, lnm,
1806 1806 NFSCMD_CONV_INBOUND, MAXPATHLEN + 1);
1807 1807
1808 1808 if (lname == NULL) {
1809 1809 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT;
1810 1810 if (name != nm)
1811 1811 kmem_free(name, MAXPATHLEN + 1);
1812 1812 kmem_free(nm, len);
1813 1813 kmem_free(lnm, llen);
1814 1814 nfs4_ntov_table_free(&ntov, &sarg);
1815 1815 resp->attrset = 0;
1816 1816 goto out;
1817 1817 }
1818 1818
1819 1819 error = VOP_SYMLINK(dvp, name, vap, lname, cr, NULL, 0);
1820 1820 if (lname != lnm)
1821 1821 kmem_free(lname, MAXPATHLEN + 1);
1822 1822 kmem_free(lnm, llen);
1823 1823 if (error)
1824 1824 break;
1825 1825
1826 1826 /*
1827 1827 * Get the initial "after" sequence number, if it fails,
1828 1828 * set to zero
1829 1829 */
1830 1830 iva.va_mask = AT_SEQ;
1831 1831 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL))
1832 1832 iva.va_seq = 0;
1833 1833
1834 1834 error = VOP_LOOKUP(dvp, name, &vp, NULL, 0, NULL, cr,
1835 1835 NULL, NULL, NULL);
1836 1836 if (error)
1837 1837 break;
1838 1838
1839 1839 /*
1840 1840 * va_seq is not safe over VOP calls, check it again
1841 1841 * if it has changed zero out iva to force atomic = FALSE.
1842 1842 */
1843 1843 iva2.va_mask = AT_SEQ;
1844 1844 if (VOP_GETATTR(dvp, &iva2, 0, cs->cr, NULL) ||
1845 1845 iva2.va_seq != iva.va_seq)
1846 1846 iva.va_seq = 0;
1847 1847 break;
1848 1848 default:
1849 1849 /*
1850 1850 * probably a special file.
1851 1851 */
1852 1852 if ((vap->va_mask & AT_MODE) == 0) {
1853 1853 vap->va_mode = 0600; /* default: owner rw only */
1854 1854 vap->va_mask |= AT_MODE;
1855 1855 }
1856 1856 syncval = FNODSYNC;
1857 1857 /*
1858 1858 * We know this will only generate one VOP call
1859 1859 */
1860 1860 vp = do_rfs4_op_mknod(args, resp, req, cs, vap, name);
1861 1861
1862 1862 if (vp == NULL) {
1863 1863 if (name != nm)
1864 1864 kmem_free(name, MAXPATHLEN + 1);
1865 1865 kmem_free(nm, len);
1866 1866 nfs4_ntov_table_free(&ntov, &sarg);
1867 1867 resp->attrset = 0;
1868 1868 goto out;
1869 1869 }
1870 1870
1871 1871 /*
1872 1872 * Get the initial "after" sequence number, if it fails,
1873 1873 * set to zero
1874 1874 */
1875 1875 iva.va_mask = AT_SEQ;
1876 1876 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL))
1877 1877 iva.va_seq = 0;
1878 1878
1879 1879 break;
1880 1880 }
1881 1881 if (name != nm)
1882 1882 kmem_free(name, MAXPATHLEN + 1);
1883 1883 kmem_free(nm, len);
1884 1884
1885 1885 if (error) {
1886 1886 *cs->statusp = resp->status = puterrno4(error);
1887 1887 }
1888 1888
1889 1889 /*
1890 1890 * Force modified data and metadata out to stable storage.
1891 1891 */
1892 1892 (void) VOP_FSYNC(dvp, 0, cr, NULL);
1893 1893
1894 1894 if (resp->status != NFS4_OK) {
1895 1895 if (vp != NULL)
1896 1896 VN_RELE(vp);
1897 1897 nfs4_ntov_table_free(&ntov, &sarg);
1898 1898 resp->attrset = 0;
1899 1899 goto out;
1900 1900 }
1901 1901
1902 1902 /*
1903 1903 * Finish setup of cinfo response, "before" value already set.
1904 1904 * Get "after" change value, if it fails, simply return the
1905 1905 * before value.
1906 1906 */
1907 1907 ava.va_mask = AT_CTIME|AT_SEQ;
1908 1908 if (VOP_GETATTR(dvp, &ava, 0, cr, NULL)) {
1909 1909 ava.va_ctime = bva.va_ctime;
1910 1910 ava.va_seq = 0;
1911 1911 }
1912 1912 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, ava.va_ctime);
1913 1913
1914 1914 /*
1915 1915 * True verification that object was created with correct
1916 1916 * attrs is impossible. The attrs could have been changed
1917 1917 * immediately after object creation. If attributes did
1918 1918 * not verify, the only recourse for the server is to
1919 1919 * destroy the object. Maybe if some attrs (like gid)
1920 1920 * are set incorrectly, the object should be destroyed;
1921 1921 * however, seems bad as a default policy. Do we really
1922 1922 * want to destroy an object over one of the times not
1923 1923 * verifying correctly? For these reasons, the server
1924 1924 * currently sets bits in attrset for createattrs
1925 1925 * that were set; however, no verification is done.
1926 1926 *
1927 1927 * vmask_to_nmask accounts for vattr bits set on create
1928 1928 * [do_rfs4_set_attrs() only sets resp bits for
1929 1929 * non-vattr/vfs bits.]
1930 1930 * Mask off any bits set by default so as not to return
1931 1931 * more attrset bits than were requested in createattrs
1932 1932 */
1933 1933 nfs4_vmask_to_nmask(sarg.vap->va_mask, &resp->attrset);
1934 1934 resp->attrset &= args->createattrs.attrmask;
1935 1935 nfs4_ntov_table_free(&ntov, &sarg);
1936 1936
1937 1937 error = makefh4(&cs->fh, vp, cs->exi);
1938 1938 if (error) {
1939 1939 *cs->statusp = resp->status = puterrno4(error);
1940 1940 }
1941 1941
1942 1942 /*
1943 1943 * The cinfo.atomic = TRUE only if we got no errors, we have
1944 1944 * non-zero va_seq's, and it has incremented by exactly one
1945 1945 * during the creation and it didn't change during the VOP_LOOKUP
1946 1946 * or VOP_FSYNC.
1947 1947 */
1948 1948 if (!error && bva.va_seq && iva.va_seq && ava.va_seq &&
1949 1949 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq)
1950 1950 resp->cinfo.atomic = TRUE;
1951 1951 else
1952 1952 resp->cinfo.atomic = FALSE;
1953 1953
1954 1954 /*
1955 1955 * Force modified metadata out to stable storage.
1956 1956 *
1957 1957 * if a underlying vp exists, pass it to VOP_FSYNC
1958 1958 */
1959 1959 if (VOP_REALVP(vp, &realvp, NULL) == 0)
1960 1960 (void) VOP_FSYNC(realvp, syncval, cr, NULL);
1961 1961 else
1962 1962 (void) VOP_FSYNC(vp, syncval, cr, NULL);
1963 1963
1964 1964 if (resp->status != NFS4_OK) {
1965 1965 VN_RELE(vp);
1966 1966 goto out;
1967 1967 }
1968 1968 if (cs->vp)
1969 1969 VN_RELE(cs->vp);
1970 1970
1971 1971 cs->vp = vp;
1972 1972 *cs->statusp = resp->status = NFS4_OK;
1973 1973 out:
1974 1974 DTRACE_NFSV4_2(op__create__done, struct compound_state *, cs,
1975 1975 CREATE4res *, resp);
1976 1976 }
1977 1977
1978 1978 /*ARGSUSED*/
1979 1979 static void
1980 1980 rfs4_op_delegpurge(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
1981 1981 struct compound_state *cs)
1982 1982 {
1983 1983 DTRACE_NFSV4_2(op__delegpurge__start, struct compound_state *, cs,
1984 1984 DELEGPURGE4args *, &argop->nfs_argop4_u.opdelegpurge);
1985 1985
1986 1986 rfs4_op_inval(argop, resop, req, cs);
1987 1987
1988 1988 DTRACE_NFSV4_2(op__delegpurge__done, struct compound_state *, cs,
1989 1989 DELEGPURGE4res *, &resop->nfs_resop4_u.opdelegpurge);
1990 1990 }
1991 1991
1992 1992 /*ARGSUSED*/
1993 1993 static void
1994 1994 rfs4_op_delegreturn(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
1995 1995 struct compound_state *cs)
1996 1996 {
1997 1997 DELEGRETURN4args *args = &argop->nfs_argop4_u.opdelegreturn;
1998 1998 DELEGRETURN4res *resp = &resop->nfs_resop4_u.opdelegreturn;
1999 1999 rfs4_deleg_state_t *dsp;
2000 2000 nfsstat4 status;
2001 2001
2002 2002 DTRACE_NFSV4_2(op__delegreturn__start, struct compound_state *, cs,
2003 2003 DELEGRETURN4args *, args);
2004 2004
2005 2005 status = rfs4_get_deleg_state(&args->deleg_stateid, &dsp);
2006 2006 resp->status = *cs->statusp = status;
2007 2007 if (status != NFS4_OK)
2008 2008 goto out;
2009 2009
2010 2010 /* Ensure specified filehandle matches */
2011 2011 if (cs->vp != dsp->rds_finfo->rf_vp) {
2012 2012 resp->status = *cs->statusp = NFS4ERR_BAD_STATEID;
2013 2013 } else
2014 2014 rfs4_return_deleg(dsp, FALSE);
2015 2015
2016 2016 rfs4_update_lease(dsp->rds_client);
2017 2017
2018 2018 rfs4_deleg_state_rele(dsp);
2019 2019 out:
2020 2020 DTRACE_NFSV4_2(op__delegreturn__done, struct compound_state *, cs,
2021 2021 DELEGRETURN4res *, resp);
2022 2022 }
2023 2023
2024 2024 /*
2025 2025 * Check to see if a given "flavor" is an explicitly shared flavor.
2026 2026 * The assumption of this routine is the "flavor" is already a valid
2027 2027 * flavor in the secinfo list of "exi".
2028 2028 *
2029 2029 * e.g.
2030 2030 * # share -o sec=flavor1 /export
2031 2031 * # share -o sec=flavor2 /export/home
2032 2032 *
2033 2033 * flavor2 is not an explicitly shared flavor for /export,
2034 2034 * however it is in the secinfo list for /export thru the
2035 2035 * server namespace setup.
2036 2036 */
2037 2037 int
2038 2038 is_exported_sec(int flavor, struct exportinfo *exi)
2039 2039 {
2040 2040 int i;
2041 2041 struct secinfo *sp;
2042 2042
2043 2043 sp = exi->exi_export.ex_secinfo;
2044 2044 for (i = 0; i < exi->exi_export.ex_seccnt; i++) {
2045 2045 if (flavor == sp[i].s_secinfo.sc_nfsnum ||
2046 2046 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE) {
2047 2047 return (SEC_REF_EXPORTED(&sp[i]));
2048 2048 }
2049 2049 }
2050 2050
2051 2051 /* Should not reach this point based on the assumption */
2052 2052 return (0);
2053 2053 }
2054 2054
2055 2055 /*
2056 2056 * Check if the security flavor used in the request matches what is
2057 2057 * required at the export point or at the root pseudo node (exi_root).
2058 2058 *
2059 2059 * returns 1 if there's a match or if exported with AUTH_NONE; 0 otherwise.
2060 2060 *
2061 2061 */
2062 2062 static int
2063 2063 secinfo_match_or_authnone(struct compound_state *cs)
2064 2064 {
2065 2065 int i;
2066 2066 struct secinfo *sp;
2067 2067
2068 2068 /*
2069 2069 * Check cs->nfsflavor (from the request) against
2070 2070 * the current export data in cs->exi.
2071 2071 */
2072 2072 sp = cs->exi->exi_export.ex_secinfo;
2073 2073 for (i = 0; i < cs->exi->exi_export.ex_seccnt; i++) {
2074 2074 if (cs->nfsflavor == sp[i].s_secinfo.sc_nfsnum ||
2075 2075 sp[i].s_secinfo.sc_nfsnum == AUTH_NONE)
2076 2076 return (1);
2077 2077 }
2078 2078
2079 2079 return (0);
2080 2080 }
2081 2081
2082 2082 /*
2083 2083 * Check the access authority for the client and return the correct error.
2084 2084 */
2085 2085 nfsstat4
2086 2086 call_checkauth4(struct compound_state *cs, struct svc_req *req)
2087 2087 {
2088 2088 int authres;
2089 2089
2090 2090 /*
2091 2091 * First, check if the security flavor used in the request
2092 2092 * are among the flavors set in the server namespace.
2093 2093 */
2094 2094 if (!secinfo_match_or_authnone(cs)) {
2095 2095 *cs->statusp = NFS4ERR_WRONGSEC;
2096 2096 return (*cs->statusp);
2097 2097 }
2098 2098
2099 2099 authres = checkauth4(cs, req);
2100 2100
2101 2101 if (authres > 0) {
2102 2102 *cs->statusp = NFS4_OK;
2103 2103 if (! (cs->access & CS_ACCESS_LIMITED))
2104 2104 cs->access = CS_ACCESS_OK;
2105 2105 } else if (authres == 0) {
2106 2106 *cs->statusp = NFS4ERR_ACCESS;
2107 2107 } else if (authres == -2) {
2108 2108 *cs->statusp = NFS4ERR_WRONGSEC;
2109 2109 } else {
2110 2110 *cs->statusp = NFS4ERR_DELAY;
2111 2111 }
2112 2112 return (*cs->statusp);
2113 2113 }
2114 2114
2115 2115 /*
2116 2116 * bitmap4_to_attrmask is called by getattr and readdir.
2117 2117 * It sets up the vattr mask and determines whether vfsstat call is needed
2118 2118 * based on the input bitmap.
2119 2119 * Returns nfsv4 status.
2120 2120 */
2121 2121 static nfsstat4
2122 2122 bitmap4_to_attrmask(bitmap4 breq, struct nfs4_svgetit_arg *sargp)
2123 2123 {
2124 2124 int i;
2125 2125 uint_t va_mask;
2126 2126 struct statvfs64 *sbp = sargp->sbp;
2127 2127
2128 2128 sargp->sbp = NULL;
2129 2129 sargp->flag = 0;
2130 2130 sargp->rdattr_error = NFS4_OK;
2131 2131 sargp->mntdfid_set = FALSE;
2132 2132 if (sargp->cs->vp)
2133 2133 sargp->xattr = get_fh4_flag(&sargp->cs->fh,
2134 2134 FH4_ATTRDIR | FH4_NAMEDATTR);
2135 2135 else
2136 2136 sargp->xattr = 0;
2137 2137
2138 2138 /*
2139 2139 * Set rdattr_error_req to true if return error per
2140 2140 * failed entry rather than fail the readdir.
2141 2141 */
2142 2142 if (breq & FATTR4_RDATTR_ERROR_MASK)
2143 2143 sargp->rdattr_error_req = 1;
2144 2144 else
2145 2145 sargp->rdattr_error_req = 0;
2146 2146
2147 2147 /*
2148 2148 * generate the va_mask
2149 2149 * Handle the easy cases first
2150 2150 */
2151 2151 switch (breq) {
2152 2152 case NFS4_NTOV_ATTR_MASK:
2153 2153 sargp->vap->va_mask = NFS4_NTOV_ATTR_AT_MASK;
2154 2154 return (NFS4_OK);
2155 2155
2156 2156 case NFS4_FS_ATTR_MASK:
2157 2157 sargp->vap->va_mask = NFS4_FS_ATTR_AT_MASK;
2158 2158 sargp->sbp = sbp;
2159 2159 return (NFS4_OK);
2160 2160
2161 2161 case NFS4_NTOV_ATTR_CACHE_MASK:
2162 2162 sargp->vap->va_mask = NFS4_NTOV_ATTR_CACHE_AT_MASK;
2163 2163 return (NFS4_OK);
2164 2164
2165 2165 case FATTR4_LEASE_TIME_MASK:
2166 2166 sargp->vap->va_mask = 0;
2167 2167 return (NFS4_OK);
2168 2168
2169 2169 default:
2170 2170 va_mask = 0;
2171 2171 for (i = 0; i < nfs4_ntov_map_size; i++) {
2172 2172 if ((breq & nfs4_ntov_map[i].fbit) &&
2173 2173 nfs4_ntov_map[i].vbit)
2174 2174 va_mask |= nfs4_ntov_map[i].vbit;
2175 2175 }
2176 2176
2177 2177 /*
2178 2178 * Check is vfsstat is needed
2179 2179 */
2180 2180 if (breq & NFS4_FS_ATTR_MASK)
2181 2181 sargp->sbp = sbp;
2182 2182
2183 2183 sargp->vap->va_mask = va_mask;
2184 2184 return (NFS4_OK);
2185 2185 }
2186 2186 /* NOTREACHED */
2187 2187 }
2188 2188
2189 2189 /*
2190 2190 * bitmap4_get_sysattrs is called by getattr and readdir.
2191 2191 * It calls both VOP_GETATTR and VFS_STATVFS calls to get the attrs.
2192 2192 * Returns nfsv4 status.
2193 2193 */
2194 2194 static nfsstat4
2195 2195 bitmap4_get_sysattrs(struct nfs4_svgetit_arg *sargp)
2196 2196 {
2197 2197 int error;
2198 2198 struct compound_state *cs = sargp->cs;
2199 2199 vnode_t *vp = cs->vp;
2200 2200
2201 2201 if (sargp->sbp != NULL) {
2202 2202 if (error = VFS_STATVFS(vp->v_vfsp, sargp->sbp)) {
2203 2203 sargp->sbp = NULL; /* to identify error */
2204 2204 return (puterrno4(error));
2205 2205 }
2206 2206 }
2207 2207
2208 2208 return (rfs4_vop_getattr(vp, sargp->vap, 0, cs->cr));
2209 2209 }
2210 2210
2211 2211 static void
2212 2212 nfs4_ntov_table_init(struct nfs4_ntov_table *ntovp)
2213 2213 {
2214 2214 ntovp->na = kmem_zalloc(sizeof (union nfs4_attr_u) * nfs4_ntov_map_size,
2215 2215 KM_SLEEP);
2216 2216 ntovp->attrcnt = 0;
2217 2217 ntovp->vfsstat = FALSE;
2218 2218 }
2219 2219
2220 2220 static void
2221 2221 nfs4_ntov_table_free(struct nfs4_ntov_table *ntovp,
2222 2222 struct nfs4_svgetit_arg *sargp)
2223 2223 {
2224 2224 int i;
2225 2225 union nfs4_attr_u *na;
2226 2226 uint8_t *amap;
2227 2227
2228 2228 /*
2229 2229 * XXX Should do the same checks for whether the bit is set
2230 2230 */
2231 2231 for (i = 0, na = ntovp->na, amap = ntovp->amap;
2232 2232 i < ntovp->attrcnt; i++, na++, amap++) {
2233 2233 (void) (*nfs4_ntov_map[*amap].sv_getit)(
2234 2234 NFS4ATTR_FREEIT, sargp, na);
2235 2235 }
2236 2236 if ((sargp->op == NFS4ATTR_SETIT) || (sargp->op == NFS4ATTR_VERIT)) {
2237 2237 /*
2238 2238 * xdr_free for getattr will be done later
2239 2239 */
2240 2240 for (i = 0, na = ntovp->na, amap = ntovp->amap;
2241 2241 i < ntovp->attrcnt; i++, na++, amap++) {
2242 2242 xdr_free(nfs4_ntov_map[*amap].xfunc, (caddr_t)na);
2243 2243 }
2244 2244 }
2245 2245 kmem_free(ntovp->na, sizeof (union nfs4_attr_u) * nfs4_ntov_map_size);
2246 2246 }
2247 2247
2248 2248 /*
2249 2249 * do_rfs4_op_getattr gets the system attrs and converts into fattr4.
2250 2250 */
2251 2251 static nfsstat4
2252 2252 do_rfs4_op_getattr(bitmap4 breq, fattr4 *fattrp,
2253 2253 struct nfs4_svgetit_arg *sargp)
2254 2254 {
2255 2255 int error = 0;
2256 2256 int i, k;
2257 2257 struct nfs4_ntov_table ntov;
2258 2258 XDR xdr;
2259 2259 ulong_t xdr_size;
2260 2260 char *xdr_attrs;
2261 2261 nfsstat4 status = NFS4_OK;
2262 2262 nfsstat4 prev_rdattr_error = sargp->rdattr_error;
2263 2263 union nfs4_attr_u *na;
2264 2264 uint8_t *amap;
2265 2265
2266 2266 sargp->op = NFS4ATTR_GETIT;
2267 2267 sargp->flag = 0;
2268 2268
2269 2269 fattrp->attrmask = 0;
2270 2270 /* if no bits requested, then return empty fattr4 */
2271 2271 if (breq == 0) {
2272 2272 fattrp->attrlist4_len = 0;
2273 2273 fattrp->attrlist4 = NULL;
2274 2274 return (NFS4_OK);
2275 2275 }
2276 2276
2277 2277 /*
2278 2278 * return NFS4ERR_INVAL when client requests write-only attrs
2279 2279 */
2280 2280 if (breq & (FATTR4_TIME_ACCESS_SET_MASK | FATTR4_TIME_MODIFY_SET_MASK))
2281 2281 return (NFS4ERR_INVAL);
2282 2282
2283 2283 nfs4_ntov_table_init(&ntov);
2284 2284 na = ntov.na;
2285 2285 amap = ntov.amap;
2286 2286
2287 2287 /*
2288 2288 * Now loop to get or verify the attrs
2289 2289 */
2290 2290 for (i = 0; i < nfs4_ntov_map_size; i++) {
2291 2291 if (breq & nfs4_ntov_map[i].fbit) {
2292 2292 if ((*nfs4_ntov_map[i].sv_getit)(
2293 2293 NFS4ATTR_SUPPORTED, sargp, NULL) == 0) {
2294 2294
2295 2295 error = (*nfs4_ntov_map[i].sv_getit)(
2296 2296 NFS4ATTR_GETIT, sargp, na);
2297 2297
2298 2298 /*
2299 2299 * Possible error values:
2300 2300 * >0 if sv_getit failed to
2301 2301 * get the attr; 0 if succeeded;
2302 2302 * <0 if rdattr_error and the
2303 2303 * attribute cannot be returned.
2304 2304 */
2305 2305 if (error && !(sargp->rdattr_error_req))
2306 2306 goto done;
2307 2307 /*
2308 2308 * If error then just for entry
2309 2309 */
2310 2310 if (error == 0) {
2311 2311 fattrp->attrmask |=
2312 2312 nfs4_ntov_map[i].fbit;
2313 2313 *amap++ =
2314 2314 (uint8_t)nfs4_ntov_map[i].nval;
2315 2315 na++;
2316 2316 (ntov.attrcnt)++;
2317 2317 } else if ((error > 0) &&
2318 2318 (sargp->rdattr_error == NFS4_OK)) {
2319 2319 sargp->rdattr_error = puterrno4(error);
2320 2320 }
2321 2321 error = 0;
2322 2322 }
2323 2323 }
2324 2324 }
2325 2325
2326 2326 /*
2327 2327 * If rdattr_error was set after the return value for it was assigned,
2328 2328 * update it.
2329 2329 */
2330 2330 if (prev_rdattr_error != sargp->rdattr_error) {
2331 2331 na = ntov.na;
2332 2332 amap = ntov.amap;
2333 2333 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) {
2334 2334 k = *amap;
2335 2335 if (k < FATTR4_RDATTR_ERROR) {
2336 2336 continue;
2337 2337 }
2338 2338 if ((k == FATTR4_RDATTR_ERROR) &&
2339 2339 ((*nfs4_ntov_map[k].sv_getit)(
2340 2340 NFS4ATTR_SUPPORTED, sargp, NULL) == 0)) {
2341 2341
2342 2342 (void) (*nfs4_ntov_map[k].sv_getit)(
2343 2343 NFS4ATTR_GETIT, sargp, na);
2344 2344 }
2345 2345 break;
2346 2346 }
2347 2347 }
2348 2348
2349 2349 xdr_size = 0;
2350 2350 na = ntov.na;
2351 2351 amap = ntov.amap;
2352 2352 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) {
2353 2353 xdr_size += xdr_sizeof(nfs4_ntov_map[*amap].xfunc, na);
2354 2354 }
2355 2355
2356 2356 fattrp->attrlist4_len = xdr_size;
2357 2357 if (xdr_size) {
2358 2358 /* freed by rfs4_op_getattr_free() */
2359 2359 fattrp->attrlist4 = xdr_attrs = kmem_zalloc(xdr_size, KM_SLEEP);
2360 2360
2361 2361 xdrmem_create(&xdr, xdr_attrs, xdr_size, XDR_ENCODE);
2362 2362
2363 2363 na = ntov.na;
2364 2364 amap = ntov.amap;
2365 2365 for (i = 0; i < ntov.attrcnt; i++, na++, amap++) {
2366 2366 if (!(*nfs4_ntov_map[*amap].xfunc)(&xdr, na)) {
2367 2367 DTRACE_PROBE1(nfss__e__getattr4_encfail,
2368 2368 int, *amap);
2369 2369 status = NFS4ERR_SERVERFAULT;
2370 2370 break;
2371 2371 }
2372 2372 }
2373 2373 /* xdrmem_destroy(&xdrs); */ /* NO-OP */
2374 2374 } else {
2375 2375 fattrp->attrlist4 = NULL;
2376 2376 }
2377 2377 done:
2378 2378
2379 2379 nfs4_ntov_table_free(&ntov, sargp);
2380 2380
2381 2381 if (error != 0)
2382 2382 status = puterrno4(error);
2383 2383
2384 2384 return (status);
2385 2385 }
2386 2386
2387 2387 /* ARGSUSED */
2388 2388 static void
2389 2389 rfs4_op_getattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
2390 2390 struct compound_state *cs)
2391 2391 {
2392 2392 GETATTR4args *args = &argop->nfs_argop4_u.opgetattr;
2393 2393 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr;
2394 2394 struct nfs4_svgetit_arg sarg;
2395 2395 struct statvfs64 sb;
2396 2396 nfsstat4 status;
2397 2397
2398 2398 DTRACE_NFSV4_2(op__getattr__start, struct compound_state *, cs,
2399 2399 GETATTR4args *, args);
2400 2400
2401 2401 if (cs->vp == NULL) {
2402 2402 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
2403 2403 goto out;
2404 2404 }
2405 2405
2406 2406 if (cs->access == CS_ACCESS_DENIED) {
2407 2407 *cs->statusp = resp->status = NFS4ERR_ACCESS;
2408 2408 goto out;
2409 2409 }
2410 2410
2411 2411 sarg.sbp = &sb;
2412 2412 sarg.cs = cs;
2413 2413 sarg.is_referral = B_FALSE;
2414 2414
2415 2415 status = bitmap4_to_attrmask(args->attr_request, &sarg);
2416 2416 if (status == NFS4_OK) {
2417 2417
2418 2418 status = bitmap4_get_sysattrs(&sarg);
2419 2419 if (status == NFS4_OK) {
2420 2420
2421 2421 /* Is this a referral? */
2422 2422 if (vn_is_nfs_reparse(cs->vp, cs->cr)) {
2423 2423 /* Older V4 Solaris client sees a link */
2424 2424 if (client_is_downrev(req))
2425 2425 sarg.vap->va_type = VLNK;
2426 2426 else
2427 2427 sarg.is_referral = B_TRUE;
2428 2428 }
2429 2429
2430 2430 status = do_rfs4_op_getattr(args->attr_request,
2431 2431 &resp->obj_attributes, &sarg);
2432 2432 }
2433 2433 }
2434 2434 *cs->statusp = resp->status = status;
2435 2435 out:
2436 2436 DTRACE_NFSV4_2(op__getattr__done, struct compound_state *, cs,
2437 2437 GETATTR4res *, resp);
2438 2438 }
2439 2439
2440 2440 static void
2441 2441 rfs4_op_getattr_free(nfs_resop4 *resop)
2442 2442 {
2443 2443 GETATTR4res *resp = &resop->nfs_resop4_u.opgetattr;
2444 2444
2445 2445 nfs4_fattr4_free(&resp->obj_attributes);
2446 2446 }
2447 2447
2448 2448 /* ARGSUSED */
2449 2449 static void
2450 2450 rfs4_op_getfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
2451 2451 struct compound_state *cs)
2452 2452 {
2453 2453 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh;
2454 2454
2455 2455 DTRACE_NFSV4_1(op__getfh__start, struct compound_state *, cs);
2456 2456
2457 2457 if (cs->vp == NULL) {
2458 2458 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
2459 2459 goto out;
2460 2460 }
2461 2461 if (cs->access == CS_ACCESS_DENIED) {
2462 2462 *cs->statusp = resp->status = NFS4ERR_ACCESS;
2463 2463 goto out;
2464 2464 }
2465 2465
2466 2466 /* check for reparse point at the share point */
2467 2467 if (cs->exi->exi_moved || vn_is_nfs_reparse(cs->exi->exi_vp, cs->cr)) {
2468 2468 /* it's all bad */
2469 2469 cs->exi->exi_moved = 1;
2470 2470 *cs->statusp = resp->status = NFS4ERR_MOVED;
2471 2471 DTRACE_PROBE2(nfs4serv__func__referral__shared__moved,
2472 2472 vnode_t *, cs->vp, char *, "rfs4_op_getfh");
2473 2473 return;
2474 2474 }
2475 2475
2476 2476 /* check for reparse point at vp */
2477 2477 if (vn_is_nfs_reparse(cs->vp, cs->cr) && !client_is_downrev(req)) {
2478 2478 /* it's not all bad */
2479 2479 *cs->statusp = resp->status = NFS4ERR_MOVED;
2480 2480 DTRACE_PROBE2(nfs4serv__func__referral__moved,
2481 2481 vnode_t *, cs->vp, char *, "rfs4_op_getfh");
2482 2482 return;
2483 2483 }
2484 2484
2485 2485 resp->object.nfs_fh4_val =
2486 2486 kmem_alloc(cs->fh.nfs_fh4_len, KM_SLEEP);
2487 2487 nfs_fh4_copy(&cs->fh, &resp->object);
2488 2488 *cs->statusp = resp->status = NFS4_OK;
2489 2489 out:
2490 2490 DTRACE_NFSV4_2(op__getfh__done, struct compound_state *, cs,
2491 2491 GETFH4res *, resp);
2492 2492 }
2493 2493
2494 2494 static void
2495 2495 rfs4_op_getfh_free(nfs_resop4 *resop)
2496 2496 {
2497 2497 GETFH4res *resp = &resop->nfs_resop4_u.opgetfh;
2498 2498
2499 2499 if (resp->status == NFS4_OK &&
2500 2500 resp->object.nfs_fh4_val != NULL) {
2501 2501 kmem_free(resp->object.nfs_fh4_val, resp->object.nfs_fh4_len);
2502 2502 resp->object.nfs_fh4_val = NULL;
2503 2503 resp->object.nfs_fh4_len = 0;
2504 2504 }
2505 2505 }
2506 2506
2507 2507 /*
2508 2508 * illegal: args: void
2509 2509 * res : status (NFS4ERR_OP_ILLEGAL)
2510 2510 */
2511 2511 /* ARGSUSED */
2512 2512 static void
2513 2513 rfs4_op_illegal(nfs_argop4 *argop, nfs_resop4 *resop,
2514 2514 struct svc_req *req, struct compound_state *cs)
2515 2515 {
2516 2516 ILLEGAL4res *resp = &resop->nfs_resop4_u.opillegal;
2517 2517
2518 2518 resop->resop = OP_ILLEGAL;
2519 2519 *cs->statusp = resp->status = NFS4ERR_OP_ILLEGAL;
2520 2520 }
2521 2521
2522 2522 /*
2523 2523 * link: args: SAVED_FH: file, CURRENT_FH: target directory
2524 2524 * res: status. If success - CURRENT_FH unchanged, return change_info
2525 2525 */
2526 2526 /* ARGSUSED */
2527 2527 static void
2528 2528 rfs4_op_link(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
2529 2529 struct compound_state *cs)
2530 2530 {
2531 2531 LINK4args *args = &argop->nfs_argop4_u.oplink;
2532 2532 LINK4res *resp = &resop->nfs_resop4_u.oplink;
2533 2533 int error;
2534 2534 vnode_t *vp;
2535 2535 vnode_t *dvp;
2536 2536 struct vattr bdva, idva, adva;
2537 2537 char *nm;
2538 2538 uint_t len;
2539 2539 struct sockaddr *ca;
2540 2540 char *name = NULL;
2541 2541 nfsstat4 status;
2542 2542
2543 2543 DTRACE_NFSV4_2(op__link__start, struct compound_state *, cs,
2544 2544 LINK4args *, args);
2545 2545
2546 2546 /* SAVED_FH: source object */
2547 2547 vp = cs->saved_vp;
2548 2548 if (vp == NULL) {
2549 2549 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
2550 2550 goto out;
2551 2551 }
2552 2552
2553 2553 /* CURRENT_FH: target directory */
2554 2554 dvp = cs->vp;
2555 2555 if (dvp == NULL) {
2556 2556 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
2557 2557 goto out;
2558 2558 }
2559 2559
2560 2560 /*
2561 2561 * If there is a non-shared filesystem mounted on this vnode,
2562 2562 * do not allow to link any file in this directory.
2563 2563 */
2564 2564 if (vn_ismntpt(dvp)) {
2565 2565 *cs->statusp = resp->status = NFS4ERR_ACCESS;
2566 2566 goto out;
2567 2567 }
2568 2568
2569 2569 if (cs->access == CS_ACCESS_DENIED) {
2570 2570 *cs->statusp = resp->status = NFS4ERR_ACCESS;
2571 2571 goto out;
2572 2572 }
2573 2573
2574 2574 /* Check source object's type validity */
2575 2575 if (vp->v_type == VDIR) {
2576 2576 *cs->statusp = resp->status = NFS4ERR_ISDIR;
2577 2577 goto out;
2578 2578 }
2579 2579
2580 2580 /* Check target directory's type */
2581 2581 if (dvp->v_type != VDIR) {
2582 2582 *cs->statusp = resp->status = NFS4ERR_NOTDIR;
2583 2583 goto out;
2584 2584 }
2585 2585
2586 2586 if (cs->saved_exi != cs->exi) {
2587 2587 *cs->statusp = resp->status = NFS4ERR_XDEV;
2588 2588 goto out;
2589 2589 }
2590 2590
2591 2591 status = utf8_dir_verify(&args->newname);
2592 2592 if (status != NFS4_OK) {
2593 2593 *cs->statusp = resp->status = status;
2594 2594 goto out;
2595 2595 }
2596 2596
2597 2597 nm = utf8_to_fn(&args->newname, &len, NULL);
2598 2598 if (nm == NULL) {
2599 2599 *cs->statusp = resp->status = NFS4ERR_INVAL;
2600 2600 goto out;
2601 2601 }
2602 2602
2603 2603 if (len > MAXNAMELEN) {
2604 2604 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG;
2605 2605 kmem_free(nm, len);
2606 2606 goto out;
2607 2607 }
2608 2608
2609 2609 if (rdonly4(req, cs)) {
2610 2610 *cs->statusp = resp->status = NFS4ERR_ROFS;
2611 2611 kmem_free(nm, len);
2612 2612 goto out;
2613 2613 }
2614 2614
2615 2615 /* Get "before" change value */
2616 2616 bdva.va_mask = AT_CTIME|AT_SEQ;
2617 2617 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL);
2618 2618 if (error) {
2619 2619 *cs->statusp = resp->status = puterrno4(error);
2620 2620 kmem_free(nm, len);
2621 2621 goto out;
2622 2622 }
2623 2623
2624 2624 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
2625 2625 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND,
2626 2626 MAXPATHLEN + 1);
2627 2627
2628 2628 if (name == NULL) {
2629 2629 *cs->statusp = resp->status = NFS4ERR_INVAL;
2630 2630 kmem_free(nm, len);
2631 2631 goto out;
2632 2632 }
2633 2633
2634 2634 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime)
2635 2635
2636 2636 error = VOP_LINK(dvp, vp, name, cs->cr, NULL, 0);
2637 2637
2638 2638 if (nm != name)
2639 2639 kmem_free(name, MAXPATHLEN + 1);
2640 2640 kmem_free(nm, len);
2641 2641
2642 2642 /*
2643 2643 * Get the initial "after" sequence number, if it fails, set to zero
2644 2644 */
2645 2645 idva.va_mask = AT_SEQ;
2646 2646 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL))
2647 2647 idva.va_seq = 0;
2648 2648
2649 2649 /*
2650 2650 * Force modified data and metadata out to stable storage.
2651 2651 */
2652 2652 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL);
2653 2653 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL);
2654 2654
2655 2655 if (error) {
2656 2656 *cs->statusp = resp->status = puterrno4(error);
2657 2657 goto out;
2658 2658 }
2659 2659
2660 2660 /*
2661 2661 * Get "after" change value, if it fails, simply return the
2662 2662 * before value.
2663 2663 */
2664 2664 adva.va_mask = AT_CTIME|AT_SEQ;
2665 2665 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) {
2666 2666 adva.va_ctime = bdva.va_ctime;
2667 2667 adva.va_seq = 0;
2668 2668 }
2669 2669
2670 2670 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime)
2671 2671
2672 2672 /*
2673 2673 * The cinfo.atomic = TRUE only if we have
2674 2674 * non-zero va_seq's, and it has incremented by exactly one
2675 2675 * during the VOP_LINK and it didn't change during the VOP_FSYNC.
2676 2676 */
2677 2677 if (bdva.va_seq && idva.va_seq && adva.va_seq &&
2678 2678 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq)
2679 2679 resp->cinfo.atomic = TRUE;
2680 2680 else
2681 2681 resp->cinfo.atomic = FALSE;
2682 2682
2683 2683 *cs->statusp = resp->status = NFS4_OK;
2684 2684 out:
2685 2685 DTRACE_NFSV4_2(op__link__done, struct compound_state *, cs,
2686 2686 LINK4res *, resp);
2687 2687 }
2688 2688
2689 2689 /*
2690 2690 * Used by rfs4_op_lookup and rfs4_op_lookupp to do the actual work.
2691 2691 */
2692 2692
2693 2693 /* ARGSUSED */
2694 2694 static nfsstat4
2695 2695 do_rfs4_op_lookup(char *nm, struct svc_req *req, struct compound_state *cs)
2696 2696 {
2697 2697 int error;
2698 2698 int different_export = 0;
2699 2699 vnode_t *vp, *pre_tvp = NULL, *oldvp = NULL;
2700 2700 struct exportinfo *exi = NULL, *pre_exi = NULL;
2701 2701 nfsstat4 stat;
2702 2702 fid_t fid;
2703 2703 int attrdir, dotdot, walk;
2704 2704 bool_t is_newvp = FALSE;
2705 2705
2706 2706 if (cs->vp->v_flag & V_XATTRDIR) {
2707 2707 attrdir = 1;
2708 2708 ASSERT(get_fh4_flag(&cs->fh, FH4_ATTRDIR));
2709 2709 } else {
2710 2710 attrdir = 0;
2711 2711 ASSERT(! get_fh4_flag(&cs->fh, FH4_ATTRDIR));
2712 2712 }
2713 2713
2714 2714 dotdot = (nm[0] == '.' && nm[1] == '.' && nm[2] == '\0');
2715 2715
2716 2716 /*
2717 2717 * If dotdotting, then need to check whether it's
2718 2718 * above the root of a filesystem, or above an
2719 2719 * export point.
2720 2720 */
2721 2721 if (dotdot) {
2722 2722 ASSERT(cs->exi != NULL);
2723 2723 ASSERT3U(cs->exi->exi_zoneid, ==, curzone->zone_id);
2724 2724 /*
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2725 2725 * If dotdotting at the root of a filesystem, then
2726 2726 * need to traverse back to the mounted-on filesystem
2727 2727 * and do the dotdot lookup there.
2728 2728 */
2729 2729 if ((cs->vp->v_flag & VROOT) || VN_IS_CURZONEROOT(cs->vp)) {
2730 2730
2731 2731 /*
2732 2732 * If at the system root, then can
2733 2733 * go up no further.
2734 2734 */
2735 - if (VN_CMP(cs->vp, ZONE_ROOTVP()))
2735 + if (VN_IS_CURZONEROOT(cs->vp))
2736 2736 return (puterrno4(ENOENT));
2737 2737
2738 2738 /*
2739 2739 * Traverse back to the mounted-on filesystem
2740 2740 */
2741 - cs->vp = untraverse(cs->vp);
2741 + cs->vp = untraverse(cs->exi->exi_ne, cs->vp);
2742 2742
2743 2743 /*
2744 2744 * Set the different_export flag so we remember
2745 2745 * to pick up a new exportinfo entry for
2746 2746 * this new filesystem.
2747 2747 */
2748 2748 different_export = 1;
2749 2749 } else {
2750 2750
2751 2751 /*
2752 2752 * If dotdotting above an export point then set
2753 2753 * the different_export to get new export info.
2754 2754 */
2755 2755 different_export = nfs_exported(cs->exi, cs->vp);
2756 2756 }
2757 2757 }
2758 2758
2759 2759 error = VOP_LOOKUP(cs->vp, nm, &vp, NULL, 0, NULL, cs->cr,
2760 2760 NULL, NULL, NULL);
2761 2761 if (error)
2762 2762 return (puterrno4(error));
2763 2763
2764 2764 /*
2765 2765 * If the vnode is in a pseudo filesystem, check whether it is visible.
2766 2766 *
2767 2767 * XXX if the vnode is a symlink and it is not visible in
2768 2768 * a pseudo filesystem, return ENOENT (not following symlink).
2769 2769 * V4 client can not mount such symlink. This is a regression
2770 2770 * from V2/V3.
2771 2771 *
2772 2772 * In the same exported filesystem, if the security flavor used
2773 2773 * is not an explicitly shared flavor, limit the view to the visible
2774 2774 * list entries only. This is not a WRONGSEC case because it's already
2775 2775 * checked via PUTROOTFH/PUTPUBFH or PUTFH.
2776 2776 */
2777 2777 if (!different_export &&
2778 2778 (PSEUDO(cs->exi) || ! is_exported_sec(cs->nfsflavor, cs->exi) ||
2779 2779 cs->access & CS_ACCESS_LIMITED)) {
2780 2780 if (! nfs_visible(cs->exi, vp, &different_export)) {
2781 2781 VN_RELE(vp);
2782 2782 return (puterrno4(ENOENT));
2783 2783 }
2784 2784 }
2785 2785
2786 2786 /*
2787 2787 * If it's a mountpoint, then traverse it.
2788 2788 */
2789 2789 if (vn_ismntpt(vp)) {
2790 2790 pre_exi = cs->exi; /* save pre-traversed exportinfo */
2791 2791 pre_tvp = vp; /* save pre-traversed vnode */
2792 2792
2793 2793 /*
2794 2794 * hold pre_tvp to counteract rele by traverse. We will
2795 2795 * need pre_tvp below if checkexport4 fails
2796 2796 */
2797 2797 VN_HOLD(pre_tvp);
2798 2798 if ((error = traverse(&vp)) != 0) {
2799 2799 VN_RELE(vp);
2800 2800 VN_RELE(pre_tvp);
2801 2801 return (puterrno4(error));
2802 2802 }
2803 2803 different_export = 1;
2804 2804 } else if (vp->v_vfsp != cs->vp->v_vfsp) {
2805 2805 /*
2806 2806 * The vfsp comparison is to handle the case where
2807 2807 * a LOFS mount is shared. lo_lookup traverses mount points,
2808 2808 * and NFS is unaware of local fs transistions because
2809 2809 * v_vfsmountedhere isn't set. For this special LOFS case,
2810 2810 * the dir and the obj returned by lookup will have different
2811 2811 * vfs ptrs.
2812 2812 */
2813 2813 different_export = 1;
2814 2814 }
2815 2815
2816 2816 if (different_export) {
2817 2817
2818 2818 bzero(&fid, sizeof (fid));
2819 2819 fid.fid_len = MAXFIDSZ;
2820 2820 error = vop_fid_pseudo(vp, &fid);
2821 2821 if (error) {
2822 2822 VN_RELE(vp);
2823 2823 if (pre_tvp)
2824 2824 VN_RELE(pre_tvp);
2825 2825 return (puterrno4(error));
2826 2826 }
2827 2827
2828 2828 if (dotdot)
2829 2829 exi = nfs_vptoexi(NULL, vp, cs->cr, &walk, NULL, TRUE);
2830 2830 else
2831 2831 exi = checkexport4(&vp->v_vfsp->vfs_fsid, &fid, vp);
2832 2832
2833 2833 if (exi == NULL) {
2834 2834 if (pre_tvp) {
2835 2835 /*
2836 2836 * If this vnode is a mounted-on vnode,
2837 2837 * but the mounted-on file system is not
2838 2838 * exported, send back the filehandle for
2839 2839 * the mounted-on vnode, not the root of
2840 2840 * the mounted-on file system.
2841 2841 */
2842 2842 VN_RELE(vp);
2843 2843 vp = pre_tvp;
2844 2844 exi = pre_exi;
2845 2845 } else {
2846 2846 VN_RELE(vp);
2847 2847 return (puterrno4(EACCES));
2848 2848 }
2849 2849 } else if (pre_tvp) {
2850 2850 /* we're done with pre_tvp now. release extra hold */
2851 2851 VN_RELE(pre_tvp);
2852 2852 }
2853 2853
2854 2854 cs->exi = exi;
2855 2855
2856 2856 /*
2857 2857 * Now we do a checkauth4. The reason is that
2858 2858 * this client/user may not have access to the new
2859 2859 * exported file system, and if they do,
2860 2860 * the client/user may be mapped to a different uid.
2861 2861 *
2862 2862 * We start with a new cr, because the checkauth4 done
2863 2863 * in the PUT*FH operation over wrote the cred's uid,
2864 2864 * gid, etc, and we want the real thing before calling
2865 2865 * checkauth4()
2866 2866 */
2867 2867 crfree(cs->cr);
2868 2868 cs->cr = crdup(cs->basecr);
2869 2869
2870 2870 oldvp = cs->vp;
2871 2871 cs->vp = vp;
2872 2872 is_newvp = TRUE;
2873 2873
2874 2874 stat = call_checkauth4(cs, req);
2875 2875 if (stat != NFS4_OK) {
2876 2876 VN_RELE(cs->vp);
2877 2877 cs->vp = oldvp;
2878 2878 return (stat);
2879 2879 }
2880 2880 }
2881 2881
2882 2882 /*
2883 2883 * After various NFS checks, do a label check on the path
2884 2884 * component. The label on this path should either be the
2885 2885 * global zone's label or a zone's label. We are only
2886 2886 * interested in the zone's label because exported files
2887 2887 * in global zone is accessible (though read-only) to
2888 2888 * clients. The exportability/visibility check is already
2889 2889 * done before reaching this code.
2890 2890 */
2891 2891 if (is_system_labeled()) {
2892 2892 bslabel_t *clabel;
2893 2893
2894 2894 ASSERT(req->rq_label != NULL);
2895 2895 clabel = req->rq_label;
2896 2896 DTRACE_PROBE2(tx__rfs4__log__info__oplookup__clabel, char *,
2897 2897 "got client label from request(1)", struct svc_req *, req);
2898 2898
2899 2899 if (!blequal(&l_admin_low->tsl_label, clabel)) {
2900 2900 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK,
2901 2901 cs->exi)) {
2902 2902 error = EACCES;
2903 2903 goto err_out;
2904 2904 }
2905 2905 } else {
2906 2906 /*
2907 2907 * We grant access to admin_low label clients
2908 2908 * only if the client is trusted, i.e. also
2909 2909 * running Solaris Trusted Extension.
2910 2910 */
2911 2911 struct sockaddr *ca;
2912 2912 int addr_type;
2913 2913 void *ipaddr;
2914 2914 tsol_tpc_t *tp;
2915 2915
2916 2916 ca = (struct sockaddr *)svc_getrpccaller(
2917 2917 req->rq_xprt)->buf;
2918 2918 if (ca->sa_family == AF_INET) {
2919 2919 addr_type = IPV4_VERSION;
2920 2920 ipaddr = &((struct sockaddr_in *)ca)->sin_addr;
2921 2921 } else if (ca->sa_family == AF_INET6) {
2922 2922 addr_type = IPV6_VERSION;
2923 2923 ipaddr = &((struct sockaddr_in6 *)
2924 2924 ca)->sin6_addr;
2925 2925 }
2926 2926 tp = find_tpc(ipaddr, addr_type, B_FALSE);
2927 2927 if (tp == NULL || tp->tpc_tp.tp_doi !=
2928 2928 l_admin_low->tsl_doi || tp->tpc_tp.host_type !=
2929 2929 SUN_CIPSO) {
2930 2930 if (tp != NULL)
2931 2931 TPC_RELE(tp);
2932 2932 error = EACCES;
2933 2933 goto err_out;
2934 2934 }
2935 2935 TPC_RELE(tp);
2936 2936 }
2937 2937 }
2938 2938
2939 2939 error = makefh4(&cs->fh, vp, cs->exi);
2940 2940
2941 2941 err_out:
2942 2942 if (error) {
2943 2943 if (is_newvp) {
2944 2944 VN_RELE(cs->vp);
2945 2945 cs->vp = oldvp;
2946 2946 } else
2947 2947 VN_RELE(vp);
2948 2948 return (puterrno4(error));
2949 2949 }
2950 2950
2951 2951 if (!is_newvp) {
2952 2952 if (cs->vp)
2953 2953 VN_RELE(cs->vp);
2954 2954 cs->vp = vp;
2955 2955 } else if (oldvp)
2956 2956 VN_RELE(oldvp);
2957 2957
2958 2958 /*
2959 2959 * if did lookup on attrdir and didn't lookup .., set named
2960 2960 * attr fh flag
2961 2961 */
2962 2962 if (attrdir && ! dotdot)
2963 2963 set_fh4_flag(&cs->fh, FH4_NAMEDATTR);
2964 2964
2965 2965 /* Assume false for now, open proc will set this */
2966 2966 cs->mandlock = FALSE;
2967 2967
2968 2968 return (NFS4_OK);
2969 2969 }
2970 2970
2971 2971 /* ARGSUSED */
2972 2972 static void
2973 2973 rfs4_op_lookup(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
2974 2974 struct compound_state *cs)
2975 2975 {
2976 2976 LOOKUP4args *args = &argop->nfs_argop4_u.oplookup;
2977 2977 LOOKUP4res *resp = &resop->nfs_resop4_u.oplookup;
2978 2978 char *nm;
2979 2979 uint_t len;
2980 2980 struct sockaddr *ca;
2981 2981 char *name = NULL;
2982 2982 nfsstat4 status;
2983 2983
2984 2984 DTRACE_NFSV4_2(op__lookup__start, struct compound_state *, cs,
2985 2985 LOOKUP4args *, args);
2986 2986
2987 2987 if (cs->vp == NULL) {
2988 2988 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
2989 2989 goto out;
2990 2990 }
2991 2991
2992 2992 if (cs->vp->v_type == VLNK) {
2993 2993 *cs->statusp = resp->status = NFS4ERR_SYMLINK;
2994 2994 goto out;
2995 2995 }
2996 2996
2997 2997 if (cs->vp->v_type != VDIR) {
2998 2998 *cs->statusp = resp->status = NFS4ERR_NOTDIR;
2999 2999 goto out;
3000 3000 }
3001 3001
3002 3002 status = utf8_dir_verify(&args->objname);
3003 3003 if (status != NFS4_OK) {
3004 3004 *cs->statusp = resp->status = status;
3005 3005 goto out;
3006 3006 }
3007 3007
3008 3008 nm = utf8_to_str(&args->objname, &len, NULL);
3009 3009 if (nm == NULL) {
3010 3010 *cs->statusp = resp->status = NFS4ERR_INVAL;
3011 3011 goto out;
3012 3012 }
3013 3013
3014 3014 if (len > MAXNAMELEN) {
3015 3015 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG;
3016 3016 kmem_free(nm, len);
3017 3017 goto out;
3018 3018 }
3019 3019
3020 3020 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
3021 3021 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND,
3022 3022 MAXPATHLEN + 1);
3023 3023
3024 3024 if (name == NULL) {
3025 3025 *cs->statusp = resp->status = NFS4ERR_INVAL;
3026 3026 kmem_free(nm, len);
3027 3027 goto out;
3028 3028 }
3029 3029
3030 3030 *cs->statusp = resp->status = do_rfs4_op_lookup(name, req, cs);
3031 3031
3032 3032 if (name != nm)
3033 3033 kmem_free(name, MAXPATHLEN + 1);
3034 3034 kmem_free(nm, len);
3035 3035
3036 3036 out:
3037 3037 DTRACE_NFSV4_2(op__lookup__done, struct compound_state *, cs,
3038 3038 LOOKUP4res *, resp);
3039 3039 }
3040 3040
3041 3041 /* ARGSUSED */
3042 3042 static void
3043 3043 rfs4_op_lookupp(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req,
3044 3044 struct compound_state *cs)
3045 3045 {
3046 3046 LOOKUPP4res *resp = &resop->nfs_resop4_u.oplookupp;
3047 3047
3048 3048 DTRACE_NFSV4_1(op__lookupp__start, struct compound_state *, cs);
3049 3049
3050 3050 if (cs->vp == NULL) {
3051 3051 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
3052 3052 goto out;
3053 3053 }
3054 3054
3055 3055 if (cs->vp->v_type != VDIR) {
3056 3056 *cs->statusp = resp->status = NFS4ERR_NOTDIR;
3057 3057 goto out;
3058 3058 }
3059 3059
3060 3060 *cs->statusp = resp->status = do_rfs4_op_lookup("..", req, cs);
3061 3061
3062 3062 /*
3063 3063 * From NFSV4 Specification, LOOKUPP should not check for
3064 3064 * NFS4ERR_WRONGSEC. Retrun NFS4_OK instead.
3065 3065 */
3066 3066 if (resp->status == NFS4ERR_WRONGSEC) {
3067 3067 *cs->statusp = resp->status = NFS4_OK;
3068 3068 }
3069 3069
3070 3070 out:
3071 3071 DTRACE_NFSV4_2(op__lookupp__done, struct compound_state *, cs,
3072 3072 LOOKUPP4res *, resp);
3073 3073 }
3074 3074
3075 3075
3076 3076 /*ARGSUSED2*/
3077 3077 static void
3078 3078 rfs4_op_openattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
3079 3079 struct compound_state *cs)
3080 3080 {
3081 3081 OPENATTR4args *args = &argop->nfs_argop4_u.opopenattr;
3082 3082 OPENATTR4res *resp = &resop->nfs_resop4_u.opopenattr;
3083 3083 vnode_t *avp = NULL;
3084 3084 int lookup_flags = LOOKUP_XATTR, error;
3085 3085 int exp_ro = 0;
3086 3086
3087 3087 DTRACE_NFSV4_2(op__openattr__start, struct compound_state *, cs,
3088 3088 OPENATTR4args *, args);
3089 3089
3090 3090 if (cs->vp == NULL) {
3091 3091 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
3092 3092 goto out;
3093 3093 }
3094 3094
3095 3095 if ((cs->vp->v_vfsp->vfs_flag & VFS_XATTR) == 0 &&
3096 3096 !vfs_has_feature(cs->vp->v_vfsp, VFSFT_SYSATTR_VIEWS)) {
3097 3097 *cs->statusp = resp->status = puterrno4(ENOTSUP);
3098 3098 goto out;
3099 3099 }
3100 3100
3101 3101 /*
3102 3102 * If file system supports passing ACE mask to VOP_ACCESS then
3103 3103 * check for ACE_READ_NAMED_ATTRS, otherwise do legacy checks
3104 3104 */
3105 3105
3106 3106 if (vfs_has_feature(cs->vp->v_vfsp, VFSFT_ACEMASKONACCESS))
3107 3107 error = VOP_ACCESS(cs->vp, ACE_READ_NAMED_ATTRS,
3108 3108 V_ACE_MASK, cs->cr, NULL);
3109 3109 else
3110 3110 error = ((VOP_ACCESS(cs->vp, VREAD, 0, cs->cr, NULL) != 0) &&
3111 3111 (VOP_ACCESS(cs->vp, VWRITE, 0, cs->cr, NULL) != 0) &&
3112 3112 (VOP_ACCESS(cs->vp, VEXEC, 0, cs->cr, NULL) != 0));
3113 3113
3114 3114 if (error) {
3115 3115 *cs->statusp = resp->status = puterrno4(EACCES);
3116 3116 goto out;
3117 3117 }
3118 3118
3119 3119 /*
3120 3120 * The CREATE_XATTR_DIR VOP flag cannot be specified if
3121 3121 * the file system is exported read-only -- regardless of
3122 3122 * createdir flag. Otherwise the attrdir would be created
3123 3123 * (assuming server fs isn't mounted readonly locally). If
3124 3124 * VOP_LOOKUP returns ENOENT in this case, the error will
3125 3125 * be translated into EROFS. ENOSYS is mapped to ENOTSUP
3126 3126 * because specfs has no VOP_LOOKUP op, so the macro would
3127 3127 * return ENOSYS. EINVAL is returned by all (current)
3128 3128 * Solaris file system implementations when any of their
3129 3129 * restrictions are violated (xattr(dir) can't have xattrdir).
3130 3130 * Returning NOTSUPP is more appropriate in this case
3131 3131 * because the object will never be able to have an attrdir.
3132 3132 */
3133 3133 if (args->createdir && ! (exp_ro = rdonly4(req, cs)))
3134 3134 lookup_flags |= CREATE_XATTR_DIR;
3135 3135
3136 3136 error = VOP_LOOKUP(cs->vp, "", &avp, NULL, lookup_flags, NULL, cs->cr,
3137 3137 NULL, NULL, NULL);
3138 3138
3139 3139 if (error) {
3140 3140 if (error == ENOENT && args->createdir && exp_ro)
3141 3141 *cs->statusp = resp->status = puterrno4(EROFS);
3142 3142 else if (error == EINVAL || error == ENOSYS)
3143 3143 *cs->statusp = resp->status = puterrno4(ENOTSUP);
3144 3144 else
3145 3145 *cs->statusp = resp->status = puterrno4(error);
3146 3146 goto out;
3147 3147 }
3148 3148
3149 3149 ASSERT(avp->v_flag & V_XATTRDIR);
3150 3150
3151 3151 error = makefh4(&cs->fh, avp, cs->exi);
3152 3152
3153 3153 if (error) {
3154 3154 VN_RELE(avp);
3155 3155 *cs->statusp = resp->status = puterrno4(error);
3156 3156 goto out;
3157 3157 }
3158 3158
3159 3159 VN_RELE(cs->vp);
3160 3160 cs->vp = avp;
3161 3161
3162 3162 /*
3163 3163 * There is no requirement for an attrdir fh flag
3164 3164 * because the attrdir has a vnode flag to distinguish
3165 3165 * it from regular (non-xattr) directories. The
3166 3166 * FH4_ATTRDIR flag is set for future sanity checks.
3167 3167 */
3168 3168 set_fh4_flag(&cs->fh, FH4_ATTRDIR);
3169 3169 *cs->statusp = resp->status = NFS4_OK;
3170 3170
3171 3171 out:
3172 3172 DTRACE_NFSV4_2(op__openattr__done, struct compound_state *, cs,
3173 3173 OPENATTR4res *, resp);
3174 3174 }
3175 3175
3176 3176 static int
3177 3177 do_io(int direction, vnode_t *vp, struct uio *uio, int ioflag, cred_t *cred,
3178 3178 caller_context_t *ct)
3179 3179 {
3180 3180 int error;
3181 3181 int i;
3182 3182 clock_t delaytime;
3183 3183
3184 3184 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay);
3185 3185
3186 3186 /*
3187 3187 * Don't block on mandatory locks. If this routine returns
3188 3188 * EAGAIN, the caller should return NFS4ERR_LOCKED.
3189 3189 */
3190 3190 uio->uio_fmode = FNONBLOCK;
3191 3191
3192 3192 for (i = 0; i < rfs4_maxlock_tries; i++) {
3193 3193
3194 3194
3195 3195 if (direction == FREAD) {
3196 3196 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, ct);
3197 3197 error = VOP_READ(vp, uio, ioflag, cred, ct);
3198 3198 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, ct);
3199 3199 } else {
3200 3200 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, ct);
3201 3201 error = VOP_WRITE(vp, uio, ioflag, cred, ct);
3202 3202 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, ct);
3203 3203 }
3204 3204
3205 3205 if (error != EAGAIN)
3206 3206 break;
3207 3207
3208 3208 if (i < rfs4_maxlock_tries - 1) {
3209 3209 delay(delaytime);
3210 3210 delaytime *= 2;
3211 3211 }
3212 3212 }
3213 3213
3214 3214 return (error);
3215 3215 }
3216 3216
3217 3217 /* ARGSUSED */
3218 3218 static void
3219 3219 rfs4_op_read(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
3220 3220 struct compound_state *cs)
3221 3221 {
3222 3222 READ4args *args = &argop->nfs_argop4_u.opread;
3223 3223 READ4res *resp = &resop->nfs_resop4_u.opread;
3224 3224 int error;
3225 3225 int verror;
3226 3226 vnode_t *vp;
3227 3227 struct vattr va;
3228 3228 struct iovec iov, *iovp = NULL;
3229 3229 int iovcnt;
3230 3230 struct uio uio;
3231 3231 u_offset_t offset;
3232 3232 bool_t *deleg = &cs->deleg;
3233 3233 nfsstat4 stat;
3234 3234 int in_crit = 0;
3235 3235 mblk_t *mp = NULL;
3236 3236 int alloc_err = 0;
3237 3237 int rdma_used = 0;
3238 3238 int loaned_buffers;
3239 3239 caller_context_t ct;
3240 3240 struct uio *uiop;
3241 3241
3242 3242 DTRACE_NFSV4_2(op__read__start, struct compound_state *, cs,
3243 3243 READ4args, args);
3244 3244
3245 3245 vp = cs->vp;
3246 3246 if (vp == NULL) {
3247 3247 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
3248 3248 goto out;
3249 3249 }
3250 3250 if (cs->access == CS_ACCESS_DENIED) {
3251 3251 *cs->statusp = resp->status = NFS4ERR_ACCESS;
3252 3252 goto out;
3253 3253 }
3254 3254
3255 3255 if ((stat = rfs4_check_stateid(FREAD, vp, &args->stateid, FALSE,
3256 3256 deleg, TRUE, &ct)) != NFS4_OK) {
3257 3257 *cs->statusp = resp->status = stat;
3258 3258 goto out;
3259 3259 }
3260 3260
3261 3261 /*
3262 3262 * Enter the critical region before calling VOP_RWLOCK
3263 3263 * to avoid a deadlock with write requests.
3264 3264 */
3265 3265 if (nbl_need_check(vp)) {
3266 3266 nbl_start_crit(vp, RW_READER);
3267 3267 in_crit = 1;
3268 3268 if (nbl_conflict(vp, NBL_READ, args->offset, args->count, 0,
3269 3269 &ct)) {
3270 3270 *cs->statusp = resp->status = NFS4ERR_LOCKED;
3271 3271 goto out;
3272 3272 }
3273 3273 }
3274 3274
3275 3275 if (args->wlist) {
3276 3276 if (args->count > clist_len(args->wlist)) {
3277 3277 *cs->statusp = resp->status = NFS4ERR_INVAL;
3278 3278 goto out;
3279 3279 }
3280 3280 rdma_used = 1;
3281 3281 }
3282 3282
3283 3283 /* use loaned buffers for TCP */
3284 3284 loaned_buffers = (nfs_loaned_buffers && !rdma_used) ? 1 : 0;
3285 3285
3286 3286 va.va_mask = AT_MODE|AT_SIZE|AT_UID;
3287 3287 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct);
3288 3288
3289 3289 /*
3290 3290 * If we can't get the attributes, then we can't do the
3291 3291 * right access checking. So, we'll fail the request.
3292 3292 */
3293 3293 if (verror) {
3294 3294 *cs->statusp = resp->status = puterrno4(verror);
3295 3295 goto out;
3296 3296 }
3297 3297
3298 3298 if (vp->v_type != VREG) {
3299 3299 *cs->statusp = resp->status =
3300 3300 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL);
3301 3301 goto out;
3302 3302 }
3303 3303
3304 3304 if (crgetuid(cs->cr) != va.va_uid &&
3305 3305 (error = VOP_ACCESS(vp, VREAD, 0, cs->cr, &ct)) &&
3306 3306 (error = VOP_ACCESS(vp, VEXEC, 0, cs->cr, &ct))) {
3307 3307 *cs->statusp = resp->status = puterrno4(error);
3308 3308 goto out;
3309 3309 }
3310 3310
3311 3311 if (MANDLOCK(vp, va.va_mode)) { /* XXX - V4 supports mand locking */
3312 3312 *cs->statusp = resp->status = NFS4ERR_ACCESS;
3313 3313 goto out;
3314 3314 }
3315 3315
3316 3316 offset = args->offset;
3317 3317 if (offset >= va.va_size) {
3318 3318 *cs->statusp = resp->status = NFS4_OK;
3319 3319 resp->eof = TRUE;
3320 3320 resp->data_len = 0;
3321 3321 resp->data_val = NULL;
3322 3322 resp->mblk = NULL;
3323 3323 /* RDMA */
3324 3324 resp->wlist = args->wlist;
3325 3325 resp->wlist_len = resp->data_len;
3326 3326 *cs->statusp = resp->status = NFS4_OK;
3327 3327 if (resp->wlist)
3328 3328 clist_zero_len(resp->wlist);
3329 3329 goto out;
3330 3330 }
3331 3331
3332 3332 if (args->count == 0) {
3333 3333 *cs->statusp = resp->status = NFS4_OK;
3334 3334 resp->eof = FALSE;
3335 3335 resp->data_len = 0;
3336 3336 resp->data_val = NULL;
3337 3337 resp->mblk = NULL;
3338 3338 /* RDMA */
3339 3339 resp->wlist = args->wlist;
3340 3340 resp->wlist_len = resp->data_len;
3341 3341 if (resp->wlist)
3342 3342 clist_zero_len(resp->wlist);
3343 3343 goto out;
3344 3344 }
3345 3345
3346 3346 /*
3347 3347 * Do not allocate memory more than maximum allowed
3348 3348 * transfer size
3349 3349 */
3350 3350 if (args->count > rfs4_tsize(req))
3351 3351 args->count = rfs4_tsize(req);
3352 3352
3353 3353 if (loaned_buffers) {
3354 3354 uiop = (uio_t *)rfs_setup_xuio(vp);
3355 3355 ASSERT(uiop != NULL);
3356 3356 uiop->uio_segflg = UIO_SYSSPACE;
3357 3357 uiop->uio_loffset = args->offset;
3358 3358 uiop->uio_resid = args->count;
3359 3359
3360 3360 /* Jump to do the read if successful */
3361 3361 if (!VOP_REQZCBUF(vp, UIO_READ, (xuio_t *)uiop, cs->cr, &ct)) {
3362 3362 /*
3363 3363 * Need to hold the vnode until after VOP_RETZCBUF()
3364 3364 * is called.
3365 3365 */
3366 3366 VN_HOLD(vp);
3367 3367 goto doio_read;
3368 3368 }
3369 3369
3370 3370 DTRACE_PROBE2(nfss__i__reqzcbuf_failed, int,
3371 3371 uiop->uio_loffset, int, uiop->uio_resid);
3372 3372
3373 3373 uiop->uio_extflg = 0;
3374 3374
3375 3375 /* failure to setup for zero copy */
3376 3376 rfs_free_xuio((void *)uiop);
3377 3377 loaned_buffers = 0;
3378 3378 }
3379 3379
3380 3380 /*
3381 3381 * If returning data via RDMA Write, then grab the chunk list. If we
3382 3382 * aren't returning READ data w/RDMA_WRITE, then grab a mblk.
3383 3383 */
3384 3384 if (rdma_used) {
3385 3385 mp = NULL;
3386 3386 (void) rdma_get_wchunk(req, &iov, args->wlist);
3387 3387 uio.uio_iov = &iov;
3388 3388 uio.uio_iovcnt = 1;
3389 3389 } else {
3390 3390 /*
3391 3391 * mp will contain the data to be sent out in the read reply.
3392 3392 * It will be freed after the reply has been sent.
3393 3393 */
3394 3394 mp = rfs_read_alloc(args->count, &iovp, &iovcnt);
3395 3395 ASSERT(mp != NULL);
3396 3396 ASSERT(alloc_err == 0);
3397 3397 uio.uio_iov = iovp;
3398 3398 uio.uio_iovcnt = iovcnt;
3399 3399 }
3400 3400
3401 3401 uio.uio_segflg = UIO_SYSSPACE;
3402 3402 uio.uio_extflg = UIO_COPY_CACHED;
3403 3403 uio.uio_loffset = args->offset;
3404 3404 uio.uio_resid = args->count;
3405 3405 uiop = &uio;
3406 3406
3407 3407 doio_read:
3408 3408 error = do_io(FREAD, vp, uiop, 0, cs->cr, &ct);
3409 3409
3410 3410 va.va_mask = AT_SIZE;
3411 3411 verror = VOP_GETATTR(vp, &va, 0, cs->cr, &ct);
3412 3412
3413 3413 if (error) {
3414 3414 if (mp)
3415 3415 freemsg(mp);
3416 3416 *cs->statusp = resp->status = puterrno4(error);
3417 3417 goto out;
3418 3418 }
3419 3419
3420 3420 /* make mblk using zc buffers */
3421 3421 if (loaned_buffers) {
3422 3422 mp = uio_to_mblk(uiop);
3423 3423 ASSERT(mp != NULL);
3424 3424 }
3425 3425
3426 3426 *cs->statusp = resp->status = NFS4_OK;
3427 3427
3428 3428 ASSERT(uiop->uio_resid >= 0);
3429 3429 resp->data_len = args->count - uiop->uio_resid;
3430 3430 if (mp) {
3431 3431 resp->data_val = (char *)mp->b_datap->db_base;
3432 3432 rfs_rndup_mblks(mp, resp->data_len, loaned_buffers);
3433 3433 } else {
3434 3434 resp->data_val = (caddr_t)iov.iov_base;
3435 3435 }
3436 3436
3437 3437 resp->mblk = mp;
3438 3438
3439 3439 if (!verror && offset + resp->data_len == va.va_size)
3440 3440 resp->eof = TRUE;
3441 3441 else
3442 3442 resp->eof = FALSE;
3443 3443
3444 3444 if (rdma_used) {
3445 3445 if (!rdma_setup_read_data4(args, resp)) {
3446 3446 *cs->statusp = resp->status = NFS4ERR_INVAL;
3447 3447 }
3448 3448 } else {
3449 3449 resp->wlist = NULL;
3450 3450 }
3451 3451
3452 3452 out:
3453 3453 if (in_crit)
3454 3454 nbl_end_crit(vp);
3455 3455
3456 3456 if (iovp != NULL)
3457 3457 kmem_free(iovp, iovcnt * sizeof (struct iovec));
3458 3458
3459 3459 DTRACE_NFSV4_2(op__read__done, struct compound_state *, cs,
3460 3460 READ4res *, resp);
3461 3461 }
3462 3462
3463 3463 static void
3464 3464 rfs4_op_read_free(nfs_resop4 *resop)
3465 3465 {
3466 3466 READ4res *resp = &resop->nfs_resop4_u.opread;
3467 3467
3468 3468 if (resp->status == NFS4_OK && resp->mblk != NULL) {
3469 3469 freemsg(resp->mblk);
3470 3470 resp->mblk = NULL;
3471 3471 resp->data_val = NULL;
3472 3472 resp->data_len = 0;
3473 3473 }
3474 3474 }
3475 3475
3476 3476 static void
3477 3477 rfs4_op_readdir_free(nfs_resop4 * resop)
3478 3478 {
3479 3479 READDIR4res *resp = &resop->nfs_resop4_u.opreaddir;
3480 3480
3481 3481 if (resp->status == NFS4_OK && resp->mblk != NULL) {
3482 3482 freeb(resp->mblk);
3483 3483 resp->mblk = NULL;
3484 3484 resp->data_len = 0;
3485 3485 }
3486 3486 }
3487 3487
3488 3488
3489 3489 /* ARGSUSED */
3490 3490 static void
3491 3491 rfs4_op_putpubfh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req,
3492 3492 struct compound_state *cs)
3493 3493 {
3494 3494 PUTPUBFH4res *resp = &resop->nfs_resop4_u.opputpubfh;
3495 3495 int error;
3496 3496 vnode_t *vp;
3497 3497 struct exportinfo *exi, *sav_exi;
3498 3498 nfs_fh4_fmt_t *fh_fmtp;
3499 3499 nfs_export_t *ne = nfs_get_export();
3500 3500
3501 3501 DTRACE_NFSV4_1(op__putpubfh__start, struct compound_state *, cs);
3502 3502
3503 3503 if (cs->vp) {
3504 3504 VN_RELE(cs->vp);
3505 3505 cs->vp = NULL;
3506 3506 }
3507 3507
3508 3508 if (cs->cr)
3509 3509 crfree(cs->cr);
3510 3510
3511 3511 cs->cr = crdup(cs->basecr);
3512 3512
3513 3513 vp = ne->exi_public->exi_vp;
3514 3514 if (vp == NULL) {
3515 3515 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT;
3516 3516 goto out;
3517 3517 }
3518 3518
3519 3519 error = makefh4(&cs->fh, vp, ne->exi_public);
3520 3520 if (error != 0) {
3521 3521 *cs->statusp = resp->status = puterrno4(error);
3522 3522 goto out;
3523 3523 }
3524 3524 sav_exi = cs->exi;
3525 3525 if (ne->exi_public == ne->exi_root) {
3526 3526 /*
3527 3527 * No filesystem is actually shared public, so we default
3528 3528 * to exi_root. In this case, we must check whether root
3529 3529 * is exported.
3530 3530 */
3531 3531 fh_fmtp = (nfs_fh4_fmt_t *)cs->fh.nfs_fh4_val;
3532 3532
3533 3533 /*
3534 3534 * if root filesystem is exported, the exportinfo struct that we
3535 3535 * should use is what checkexport4 returns, because root_exi is
3536 3536 * actually a mostly empty struct.
3537 3537 */
3538 3538 exi = checkexport4(&fh_fmtp->fh4_fsid,
3539 3539 (fid_t *)&fh_fmtp->fh4_xlen, NULL);
3540 3540 cs->exi = ((exi != NULL) ? exi : ne->exi_public);
3541 3541 } else {
3542 3542 /*
3543 3543 * it's a properly shared filesystem
3544 3544 */
3545 3545 cs->exi = ne->exi_public;
3546 3546 }
3547 3547
3548 3548 if (is_system_labeled()) {
3549 3549 bslabel_t *clabel;
3550 3550
3551 3551 ASSERT(req->rq_label != NULL);
3552 3552 clabel = req->rq_label;
3553 3553 DTRACE_PROBE2(tx__rfs4__log__info__opputpubfh__clabel, char *,
3554 3554 "got client label from request(1)",
3555 3555 struct svc_req *, req);
3556 3556 if (!blequal(&l_admin_low->tsl_label, clabel)) {
3557 3557 if (!do_rfs_label_check(clabel, vp, DOMINANCE_CHECK,
3558 3558 cs->exi)) {
3559 3559 *cs->statusp = resp->status =
3560 3560 NFS4ERR_SERVERFAULT;
3561 3561 goto out;
3562 3562 }
3563 3563 }
3564 3564 }
3565 3565
3566 3566 VN_HOLD(vp);
3567 3567 cs->vp = vp;
3568 3568
3569 3569 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) {
3570 3570 VN_RELE(cs->vp);
3571 3571 cs->vp = NULL;
3572 3572 cs->exi = sav_exi;
3573 3573 goto out;
3574 3574 }
3575 3575
3576 3576 *cs->statusp = resp->status = NFS4_OK;
3577 3577 out:
3578 3578 DTRACE_NFSV4_2(op__putpubfh__done, struct compound_state *, cs,
3579 3579 PUTPUBFH4res *, resp);
3580 3580 }
3581 3581
3582 3582 /*
3583 3583 * XXX - issue with put*fh operations. Suppose /export/home is exported.
3584 3584 * Suppose an NFS client goes to mount /export/home/joe. If /export, home,
3585 3585 * or joe have restrictive search permissions, then we shouldn't let
3586 3586 * the client get a file handle. This is easy to enforce. However, we
3587 3587 * don't know what security flavor should be used until we resolve the
3588 3588 * path name. Another complication is uid mapping. If root is
3589 3589 * the user, then it will be mapped to the anonymous user by default,
3590 3590 * but we won't know that till we've resolved the path name. And we won't
3591 3591 * know what the anonymous user is.
3592 3592 * Luckily, SECINFO is specified to take a full filename.
3593 3593 * So what we will have to in rfs4_op_lookup is check that flavor of
3594 3594 * the target object matches that of the request, and if root was the
3595 3595 * caller, check for the root= and anon= options, and if necessary,
3596 3596 * repeat the lookup using the right cred_t. But that's not done yet.
3597 3597 */
3598 3598 /* ARGSUSED */
3599 3599 static void
3600 3600 rfs4_op_putfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
3601 3601 struct compound_state *cs)
3602 3602 {
3603 3603 PUTFH4args *args = &argop->nfs_argop4_u.opputfh;
3604 3604 PUTFH4res *resp = &resop->nfs_resop4_u.opputfh;
3605 3605 nfs_fh4_fmt_t *fh_fmtp;
3606 3606
3607 3607 DTRACE_NFSV4_2(op__putfh__start, struct compound_state *, cs,
3608 3608 PUTFH4args *, args);
3609 3609
3610 3610 if (cs->vp) {
3611 3611 VN_RELE(cs->vp);
3612 3612 cs->vp = NULL;
3613 3613 }
3614 3614
3615 3615 if (cs->cr) {
3616 3616 crfree(cs->cr);
3617 3617 cs->cr = NULL;
3618 3618 }
3619 3619
3620 3620
3621 3621 if (args->object.nfs_fh4_len < NFS_FH4_LEN) {
3622 3622 *cs->statusp = resp->status = NFS4ERR_BADHANDLE;
3623 3623 goto out;
3624 3624 }
3625 3625
3626 3626 fh_fmtp = (nfs_fh4_fmt_t *)args->object.nfs_fh4_val;
3627 3627 cs->exi = checkexport4(&fh_fmtp->fh4_fsid, (fid_t *)&fh_fmtp->fh4_xlen,
3628 3628 NULL);
3629 3629
3630 3630 if (cs->exi == NULL) {
3631 3631 *cs->statusp = resp->status = NFS4ERR_STALE;
3632 3632 goto out;
3633 3633 }
3634 3634
3635 3635 cs->cr = crdup(cs->basecr);
3636 3636
3637 3637 ASSERT(cs->cr != NULL);
3638 3638
3639 3639 if (! (cs->vp = nfs4_fhtovp(&args->object, cs->exi, &resp->status))) {
3640 3640 *cs->statusp = resp->status;
3641 3641 goto out;
3642 3642 }
3643 3643
3644 3644 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) {
3645 3645 VN_RELE(cs->vp);
3646 3646 cs->vp = NULL;
3647 3647 goto out;
3648 3648 }
3649 3649
3650 3650 nfs_fh4_copy(&args->object, &cs->fh);
3651 3651 *cs->statusp = resp->status = NFS4_OK;
3652 3652 cs->deleg = FALSE;
3653 3653
3654 3654 out:
3655 3655 DTRACE_NFSV4_2(op__putfh__done, struct compound_state *, cs,
3656 3656 PUTFH4res *, resp);
3657 3657 }
3658 3658
3659 3659 /* ARGSUSED */
3660 3660 static void
3661 3661 rfs4_op_putrootfh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
3662 3662 struct compound_state *cs)
3663 3663 {
3664 3664 PUTROOTFH4res *resp = &resop->nfs_resop4_u.opputrootfh;
3665 3665 int error;
3666 3666 fid_t fid;
3667 3667 struct exportinfo *exi, *sav_exi;
3668 3668
3669 3669 DTRACE_NFSV4_1(op__putrootfh__start, struct compound_state *, cs);
3670 3670
3671 3671 if (cs->vp) {
3672 3672 VN_RELE(cs->vp);
3673 3673 cs->vp = NULL;
3674 3674 }
3675 3675
3676 3676 if (cs->cr)
3677 3677 crfree(cs->cr);
3678 3678
3679 3679 cs->cr = crdup(cs->basecr);
3680 3680
3681 3681 /*
3682 3682 * Using rootdir, the system root vnode,
3683 3683 * get its fid.
3684 3684 */
3685 3685 bzero(&fid, sizeof (fid));
3686 3686 fid.fid_len = MAXFIDSZ;
3687 3687 error = vop_fid_pseudo(ZONE_ROOTVP(), &fid);
3688 3688 if (error != 0) {
3689 3689 *cs->statusp = resp->status = puterrno4(error);
3690 3690 goto out;
3691 3691 }
3692 3692
3693 3693 /*
3694 3694 * Then use the root fsid & fid it to find out if it's exported
3695 3695 *
3696 3696 * If the server root isn't exported directly, then
3697 3697 * it should at least be a pseudo export based on
3698 3698 * one or more exports further down in the server's
3699 3699 * file tree.
3700 3700 */
3701 3701 exi = checkexport4(&ZONE_ROOTVP()->v_vfsp->vfs_fsid, &fid, NULL);
3702 3702 if (exi == NULL || exi->exi_export.ex_flags & EX_PUBLIC) {
3703 3703 NFS4_DEBUG(rfs4_debug,
3704 3704 (CE_WARN, "rfs4_op_putrootfh: export check failure"));
3705 3705 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT;
3706 3706 goto out;
3707 3707 }
3708 3708
3709 3709 /*
3710 3710 * Now make a filehandle based on the root
3711 3711 * export and root vnode.
3712 3712 */
3713 3713 error = makefh4(&cs->fh, ZONE_ROOTVP(), exi);
3714 3714 if (error != 0) {
3715 3715 *cs->statusp = resp->status = puterrno4(error);
3716 3716 goto out;
3717 3717 }
3718 3718
3719 3719 sav_exi = cs->exi;
3720 3720 cs->exi = exi;
3721 3721
3722 3722 VN_HOLD(ZONE_ROOTVP());
3723 3723 cs->vp = ZONE_ROOTVP();
3724 3724
3725 3725 if ((resp->status = call_checkauth4(cs, req)) != NFS4_OK) {
3726 3726 VN_RELE(cs->vp);
3727 3727 cs->vp = NULL;
3728 3728 cs->exi = sav_exi;
3729 3729 goto out;
3730 3730 }
3731 3731
3732 3732 *cs->statusp = resp->status = NFS4_OK;
3733 3733 cs->deleg = FALSE;
3734 3734 out:
3735 3735 DTRACE_NFSV4_2(op__putrootfh__done, struct compound_state *, cs,
3736 3736 PUTROOTFH4res *, resp);
3737 3737 }
3738 3738
3739 3739 /*
3740 3740 * readlink: args: CURRENT_FH.
3741 3741 * res: status. If success - CURRENT_FH unchanged, return linktext.
3742 3742 */
3743 3743
3744 3744 /* ARGSUSED */
3745 3745 static void
3746 3746 rfs4_op_readlink(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
3747 3747 struct compound_state *cs)
3748 3748 {
3749 3749 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink;
3750 3750 int error;
3751 3751 vnode_t *vp;
3752 3752 struct iovec iov;
3753 3753 struct vattr va;
3754 3754 struct uio uio;
3755 3755 char *data;
3756 3756 struct sockaddr *ca;
3757 3757 char *name = NULL;
3758 3758 int is_referral;
3759 3759
3760 3760 DTRACE_NFSV4_1(op__readlink__start, struct compound_state *, cs);
3761 3761
3762 3762 /* CURRENT_FH: directory */
3763 3763 vp = cs->vp;
3764 3764 if (vp == NULL) {
3765 3765 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
3766 3766 goto out;
3767 3767 }
3768 3768
3769 3769 if (cs->access == CS_ACCESS_DENIED) {
3770 3770 *cs->statusp = resp->status = NFS4ERR_ACCESS;
3771 3771 goto out;
3772 3772 }
3773 3773
3774 3774 /* Is it a referral? */
3775 3775 if (vn_is_nfs_reparse(vp, cs->cr) && client_is_downrev(req)) {
3776 3776
3777 3777 is_referral = 1;
3778 3778
3779 3779 } else {
3780 3780
3781 3781 is_referral = 0;
3782 3782
3783 3783 if (vp->v_type == VDIR) {
3784 3784 *cs->statusp = resp->status = NFS4ERR_ISDIR;
3785 3785 goto out;
3786 3786 }
3787 3787
3788 3788 if (vp->v_type != VLNK) {
3789 3789 *cs->statusp = resp->status = NFS4ERR_INVAL;
3790 3790 goto out;
3791 3791 }
3792 3792
3793 3793 }
3794 3794
3795 3795 va.va_mask = AT_MODE;
3796 3796 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL);
3797 3797 if (error) {
3798 3798 *cs->statusp = resp->status = puterrno4(error);
3799 3799 goto out;
3800 3800 }
3801 3801
3802 3802 if (MANDLOCK(vp, va.va_mode)) {
3803 3803 *cs->statusp = resp->status = NFS4ERR_ACCESS;
3804 3804 goto out;
3805 3805 }
3806 3806
3807 3807 data = kmem_alloc(MAXPATHLEN + 1, KM_SLEEP);
3808 3808
3809 3809 if (is_referral) {
3810 3810 char *s;
3811 3811 size_t strsz;
3812 3812
3813 3813 /* Get an artificial symlink based on a referral */
3814 3814 s = build_symlink(vp, cs->cr, &strsz);
3815 3815 global_svstat_ptr[4][NFS_REFERLINKS].value.ui64++;
3816 3816 DTRACE_PROBE2(nfs4serv__func__referral__reflink,
3817 3817 vnode_t *, vp, char *, s);
3818 3818 if (s == NULL)
3819 3819 error = EINVAL;
3820 3820 else {
3821 3821 error = 0;
3822 3822 (void) strlcpy(data, s, MAXPATHLEN + 1);
3823 3823 kmem_free(s, strsz);
3824 3824 }
3825 3825
3826 3826 } else {
3827 3827
3828 3828 iov.iov_base = data;
3829 3829 iov.iov_len = MAXPATHLEN;
3830 3830 uio.uio_iov = &iov;
3831 3831 uio.uio_iovcnt = 1;
3832 3832 uio.uio_segflg = UIO_SYSSPACE;
3833 3833 uio.uio_extflg = UIO_COPY_CACHED;
3834 3834 uio.uio_loffset = 0;
3835 3835 uio.uio_resid = MAXPATHLEN;
3836 3836
3837 3837 error = VOP_READLINK(vp, &uio, cs->cr, NULL);
3838 3838
3839 3839 if (!error)
3840 3840 *(data + MAXPATHLEN - uio.uio_resid) = '\0';
3841 3841 }
3842 3842
3843 3843 if (error) {
3844 3844 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1);
3845 3845 *cs->statusp = resp->status = puterrno4(error);
3846 3846 goto out;
3847 3847 }
3848 3848
3849 3849 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
3850 3850 name = nfscmd_convname(ca, cs->exi, data, NFSCMD_CONV_OUTBOUND,
3851 3851 MAXPATHLEN + 1);
3852 3852
3853 3853 if (name == NULL) {
3854 3854 /*
3855 3855 * Even though the conversion failed, we return
3856 3856 * something. We just don't translate it.
3857 3857 */
3858 3858 name = data;
3859 3859 }
3860 3860
3861 3861 /*
3862 3862 * treat link name as data
3863 3863 */
3864 3864 (void) str_to_utf8(name, (utf8string *)&resp->link);
3865 3865
3866 3866 if (name != data)
3867 3867 kmem_free(name, MAXPATHLEN + 1);
3868 3868 kmem_free((caddr_t)data, (uint_t)MAXPATHLEN + 1);
3869 3869 *cs->statusp = resp->status = NFS4_OK;
3870 3870
3871 3871 out:
3872 3872 DTRACE_NFSV4_2(op__readlink__done, struct compound_state *, cs,
3873 3873 READLINK4res *, resp);
3874 3874 }
3875 3875
3876 3876 static void
3877 3877 rfs4_op_readlink_free(nfs_resop4 *resop)
3878 3878 {
3879 3879 READLINK4res *resp = &resop->nfs_resop4_u.opreadlink;
3880 3880 utf8string *symlink = (utf8string *)&resp->link;
3881 3881
3882 3882 if (symlink->utf8string_val) {
3883 3883 UTF8STRING_FREE(*symlink)
3884 3884 }
3885 3885 }
3886 3886
3887 3887 /*
3888 3888 * release_lockowner:
3889 3889 * Release any state associated with the supplied
3890 3890 * lockowner. Note if any lo_state is holding locks we will not
3891 3891 * rele that lo_state and thus the lockowner will not be destroyed.
3892 3892 * A client using lock after the lock owner stateid has been released
3893 3893 * will suffer the consequence of NFS4ERR_BAD_STATEID and would have
3894 3894 * to reissue the lock with new_lock_owner set to TRUE.
3895 3895 * args: lock_owner
3896 3896 * res: status
3897 3897 */
3898 3898 /* ARGSUSED */
3899 3899 static void
3900 3900 rfs4_op_release_lockowner(nfs_argop4 *argop, nfs_resop4 *resop,
3901 3901 struct svc_req *req, struct compound_state *cs)
3902 3902 {
3903 3903 RELEASE_LOCKOWNER4args *ap = &argop->nfs_argop4_u.oprelease_lockowner;
3904 3904 RELEASE_LOCKOWNER4res *resp = &resop->nfs_resop4_u.oprelease_lockowner;
3905 3905 rfs4_lockowner_t *lo;
3906 3906 rfs4_openowner_t *oo;
3907 3907 rfs4_state_t *sp;
3908 3908 rfs4_lo_state_t *lsp;
3909 3909 rfs4_client_t *cp;
3910 3910 bool_t create = FALSE;
3911 3911 locklist_t *llist;
3912 3912 sysid_t sysid;
3913 3913
3914 3914 DTRACE_NFSV4_2(op__release__lockowner__start, struct compound_state *,
3915 3915 cs, RELEASE_LOCKOWNER4args *, ap);
3916 3916
3917 3917 /* Make sure there is a clientid around for this request */
3918 3918 cp = rfs4_findclient_by_id(ap->lock_owner.clientid, FALSE);
3919 3919
3920 3920 if (cp == NULL) {
3921 3921 *cs->statusp = resp->status =
3922 3922 rfs4_check_clientid(&ap->lock_owner.clientid, 0);
3923 3923 goto out;
3924 3924 }
3925 3925 rfs4_client_rele(cp);
3926 3926
3927 3927 lo = rfs4_findlockowner(&ap->lock_owner, &create);
3928 3928 if (lo == NULL) {
3929 3929 *cs->statusp = resp->status = NFS4_OK;
3930 3930 goto out;
3931 3931 }
3932 3932 ASSERT(lo->rl_client != NULL);
3933 3933
3934 3934 /*
3935 3935 * Check for EXPIRED client. If so will reap state with in a lease
3936 3936 * period or on next set_clientid_confirm step
3937 3937 */
3938 3938 if (rfs4_lease_expired(lo->rl_client)) {
3939 3939 rfs4_lockowner_rele(lo);
3940 3940 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
3941 3941 goto out;
3942 3942 }
3943 3943
3944 3944 /*
3945 3945 * If no sysid has been assigned, then no locks exist; just return.
3946 3946 */
3947 3947 rfs4_dbe_lock(lo->rl_client->rc_dbe);
3948 3948 if (lo->rl_client->rc_sysidt == LM_NOSYSID) {
3949 3949 rfs4_lockowner_rele(lo);
3950 3950 rfs4_dbe_unlock(lo->rl_client->rc_dbe);
3951 3951 goto out;
3952 3952 }
3953 3953
3954 3954 sysid = lo->rl_client->rc_sysidt;
3955 3955 rfs4_dbe_unlock(lo->rl_client->rc_dbe);
3956 3956
3957 3957 /*
3958 3958 * Mark the lockowner invalid.
3959 3959 */
3960 3960 rfs4_dbe_hide(lo->rl_dbe);
3961 3961
3962 3962 /*
3963 3963 * sysid-pid pair should now not be used since the lockowner is
3964 3964 * invalid. If the client were to instantiate the lockowner again
3965 3965 * it would be assigned a new pid. Thus we can get the list of
3966 3966 * current locks.
3967 3967 */
3968 3968
3969 3969 llist = flk_get_active_locks(sysid, lo->rl_pid);
3970 3970 /* If we are still holding locks fail */
3971 3971 if (llist != NULL) {
3972 3972
3973 3973 *cs->statusp = resp->status = NFS4ERR_LOCKS_HELD;
3974 3974
3975 3975 flk_free_locklist(llist);
3976 3976 /*
3977 3977 * We need to unhide the lockowner so the client can
3978 3978 * try it again. The bad thing here is if the client
3979 3979 * has a logic error that took it here in the first place
3980 3980 * they probably have lost accounting of the locks that it
3981 3981 * is holding. So we may have dangling state until the
3982 3982 * open owner state is reaped via close. One scenario
3983 3983 * that could possibly occur is that the client has
3984 3984 * sent the unlock request(s) in separate threads
3985 3985 * and has not waited for the replies before sending the
3986 3986 * RELEASE_LOCKOWNER request. Presumably, it would expect
3987 3987 * and deal appropriately with NFS4ERR_LOCKS_HELD, by
3988 3988 * reissuing the request.
3989 3989 */
3990 3990 rfs4_dbe_unhide(lo->rl_dbe);
3991 3991 rfs4_lockowner_rele(lo);
3992 3992 goto out;
3993 3993 }
3994 3994
3995 3995 /*
3996 3996 * For the corresponding client we need to check each open
3997 3997 * owner for any opens that have lockowner state associated
3998 3998 * with this lockowner.
3999 3999 */
4000 4000
4001 4001 rfs4_dbe_lock(lo->rl_client->rc_dbe);
4002 4002 for (oo = list_head(&lo->rl_client->rc_openownerlist); oo != NULL;
4003 4003 oo = list_next(&lo->rl_client->rc_openownerlist, oo)) {
4004 4004
4005 4005 rfs4_dbe_lock(oo->ro_dbe);
4006 4006 for (sp = list_head(&oo->ro_statelist); sp != NULL;
4007 4007 sp = list_next(&oo->ro_statelist, sp)) {
4008 4008
4009 4009 rfs4_dbe_lock(sp->rs_dbe);
4010 4010 for (lsp = list_head(&sp->rs_lostatelist);
4011 4011 lsp != NULL;
4012 4012 lsp = list_next(&sp->rs_lostatelist, lsp)) {
4013 4013 if (lsp->rls_locker == lo) {
4014 4014 rfs4_dbe_lock(lsp->rls_dbe);
4015 4015 rfs4_dbe_invalidate(lsp->rls_dbe);
4016 4016 rfs4_dbe_unlock(lsp->rls_dbe);
4017 4017 }
4018 4018 }
4019 4019 rfs4_dbe_unlock(sp->rs_dbe);
4020 4020 }
4021 4021 rfs4_dbe_unlock(oo->ro_dbe);
4022 4022 }
4023 4023 rfs4_dbe_unlock(lo->rl_client->rc_dbe);
4024 4024
4025 4025 rfs4_lockowner_rele(lo);
4026 4026
4027 4027 *cs->statusp = resp->status = NFS4_OK;
4028 4028
4029 4029 out:
4030 4030 DTRACE_NFSV4_2(op__release__lockowner__done, struct compound_state *,
4031 4031 cs, RELEASE_LOCKOWNER4res *, resp);
4032 4032 }
4033 4033
4034 4034 /*
4035 4035 * short utility function to lookup a file and recall the delegation
4036 4036 */
4037 4037 static rfs4_file_t *
4038 4038 rfs4_lookup_and_findfile(vnode_t *dvp, char *nm, vnode_t **vpp,
4039 4039 int *lkup_error, cred_t *cr)
4040 4040 {
4041 4041 vnode_t *vp;
4042 4042 rfs4_file_t *fp = NULL;
4043 4043 bool_t fcreate = FALSE;
4044 4044 int error;
4045 4045
4046 4046 if (vpp)
4047 4047 *vpp = NULL;
4048 4048
4049 4049 if ((error = VOP_LOOKUP(dvp, nm, &vp, NULL, 0, NULL, cr, NULL, NULL,
4050 4050 NULL)) == 0) {
4051 4051 if (vp->v_type == VREG)
4052 4052 fp = rfs4_findfile(vp, NULL, &fcreate);
4053 4053 if (vpp)
4054 4054 *vpp = vp;
4055 4055 else
4056 4056 VN_RELE(vp);
4057 4057 }
4058 4058
4059 4059 if (lkup_error)
4060 4060 *lkup_error = error;
4061 4061
4062 4062 return (fp);
4063 4063 }
4064 4064
4065 4065 /*
4066 4066 * remove: args: CURRENT_FH: directory; name.
4067 4067 * res: status. If success - CURRENT_FH unchanged, return change_info
4068 4068 * for directory.
4069 4069 */
4070 4070 /* ARGSUSED */
4071 4071 static void
4072 4072 rfs4_op_remove(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
4073 4073 struct compound_state *cs)
4074 4074 {
4075 4075 REMOVE4args *args = &argop->nfs_argop4_u.opremove;
4076 4076 REMOVE4res *resp = &resop->nfs_resop4_u.opremove;
4077 4077 int error;
4078 4078 vnode_t *dvp, *vp;
4079 4079 struct vattr bdva, idva, adva;
4080 4080 char *nm;
4081 4081 uint_t len;
4082 4082 rfs4_file_t *fp;
4083 4083 int in_crit = 0;
4084 4084 bslabel_t *clabel;
4085 4085 struct sockaddr *ca;
4086 4086 char *name = NULL;
4087 4087 nfsstat4 status;
4088 4088
4089 4089 DTRACE_NFSV4_2(op__remove__start, struct compound_state *, cs,
4090 4090 REMOVE4args *, args);
4091 4091
4092 4092 /* CURRENT_FH: directory */
4093 4093 dvp = cs->vp;
4094 4094 if (dvp == NULL) {
4095 4095 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
4096 4096 goto out;
4097 4097 }
4098 4098
4099 4099 if (cs->access == CS_ACCESS_DENIED) {
4100 4100 *cs->statusp = resp->status = NFS4ERR_ACCESS;
4101 4101 goto out;
4102 4102 }
4103 4103
4104 4104 /*
4105 4105 * If there is an unshared filesystem mounted on this vnode,
4106 4106 * Do not allow to remove anything in this directory.
4107 4107 */
4108 4108 if (vn_ismntpt(dvp)) {
4109 4109 *cs->statusp = resp->status = NFS4ERR_ACCESS;
4110 4110 goto out;
4111 4111 }
4112 4112
4113 4113 if (dvp->v_type != VDIR) {
4114 4114 *cs->statusp = resp->status = NFS4ERR_NOTDIR;
4115 4115 goto out;
4116 4116 }
4117 4117
4118 4118 status = utf8_dir_verify(&args->target);
4119 4119 if (status != NFS4_OK) {
4120 4120 *cs->statusp = resp->status = status;
4121 4121 goto out;
4122 4122 }
4123 4123
4124 4124 /*
4125 4125 * Lookup the file so that we can check if it's a directory
4126 4126 */
4127 4127 nm = utf8_to_fn(&args->target, &len, NULL);
4128 4128 if (nm == NULL) {
4129 4129 *cs->statusp = resp->status = NFS4ERR_INVAL;
4130 4130 goto out;
4131 4131 }
4132 4132
4133 4133 if (len > MAXNAMELEN) {
4134 4134 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG;
4135 4135 kmem_free(nm, len);
4136 4136 goto out;
4137 4137 }
4138 4138
4139 4139 if (rdonly4(req, cs)) {
4140 4140 *cs->statusp = resp->status = NFS4ERR_ROFS;
4141 4141 kmem_free(nm, len);
4142 4142 goto out;
4143 4143 }
4144 4144
4145 4145 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
4146 4146 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND,
4147 4147 MAXPATHLEN + 1);
4148 4148
4149 4149 if (name == NULL) {
4150 4150 *cs->statusp = resp->status = NFS4ERR_INVAL;
4151 4151 kmem_free(nm, len);
4152 4152 goto out;
4153 4153 }
4154 4154
4155 4155 /*
4156 4156 * Lookup the file to determine type and while we are see if
4157 4157 * there is a file struct around and check for delegation.
4158 4158 * We don't need to acquire va_seq before this lookup, if
4159 4159 * it causes an update, cinfo.before will not match, which will
4160 4160 * trigger a cache flush even if atomic is TRUE.
4161 4161 */
4162 4162 if (fp = rfs4_lookup_and_findfile(dvp, name, &vp, &error, cs->cr)) {
4163 4163 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE,
4164 4164 NULL)) {
4165 4165 VN_RELE(vp);
4166 4166 rfs4_file_rele(fp);
4167 4167 *cs->statusp = resp->status = NFS4ERR_DELAY;
4168 4168 if (nm != name)
4169 4169 kmem_free(name, MAXPATHLEN + 1);
4170 4170 kmem_free(nm, len);
4171 4171 goto out;
4172 4172 }
4173 4173 }
4174 4174
4175 4175 /* Didn't find anything to remove */
4176 4176 if (vp == NULL) {
4177 4177 *cs->statusp = resp->status = error;
4178 4178 if (nm != name)
4179 4179 kmem_free(name, MAXPATHLEN + 1);
4180 4180 kmem_free(nm, len);
4181 4181 goto out;
4182 4182 }
4183 4183
4184 4184 if (nbl_need_check(vp)) {
4185 4185 nbl_start_crit(vp, RW_READER);
4186 4186 in_crit = 1;
4187 4187 if (nbl_conflict(vp, NBL_REMOVE, 0, 0, 0, NULL)) {
4188 4188 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN;
4189 4189 if (nm != name)
4190 4190 kmem_free(name, MAXPATHLEN + 1);
4191 4191 kmem_free(nm, len);
4192 4192 nbl_end_crit(vp);
4193 4193 VN_RELE(vp);
4194 4194 if (fp) {
4195 4195 rfs4_clear_dont_grant(fp);
4196 4196 rfs4_file_rele(fp);
4197 4197 }
4198 4198 goto out;
4199 4199 }
4200 4200 }
4201 4201
4202 4202 /* check label before allowing removal */
4203 4203 if (is_system_labeled()) {
4204 4204 ASSERT(req->rq_label != NULL);
4205 4205 clabel = req->rq_label;
4206 4206 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *,
4207 4207 "got client label from request(1)",
4208 4208 struct svc_req *, req);
4209 4209 if (!blequal(&l_admin_low->tsl_label, clabel)) {
4210 4210 if (!do_rfs_label_check(clabel, vp, EQUALITY_CHECK,
4211 4211 cs->exi)) {
4212 4212 *cs->statusp = resp->status = NFS4ERR_ACCESS;
4213 4213 if (name != nm)
4214 4214 kmem_free(name, MAXPATHLEN + 1);
4215 4215 kmem_free(nm, len);
4216 4216 if (in_crit)
4217 4217 nbl_end_crit(vp);
4218 4218 VN_RELE(vp);
4219 4219 if (fp) {
4220 4220 rfs4_clear_dont_grant(fp);
4221 4221 rfs4_file_rele(fp);
4222 4222 }
4223 4223 goto out;
4224 4224 }
4225 4225 }
4226 4226 }
4227 4227
4228 4228 /* Get dir "before" change value */
4229 4229 bdva.va_mask = AT_CTIME|AT_SEQ;
4230 4230 error = VOP_GETATTR(dvp, &bdva, 0, cs->cr, NULL);
4231 4231 if (error) {
4232 4232 *cs->statusp = resp->status = puterrno4(error);
4233 4233 if (nm != name)
4234 4234 kmem_free(name, MAXPATHLEN + 1);
4235 4235 kmem_free(nm, len);
4236 4236 if (in_crit)
4237 4237 nbl_end_crit(vp);
4238 4238 VN_RELE(vp);
4239 4239 if (fp) {
4240 4240 rfs4_clear_dont_grant(fp);
4241 4241 rfs4_file_rele(fp);
4242 4242 }
4243 4243 goto out;
4244 4244 }
4245 4245 NFS4_SET_FATTR4_CHANGE(resp->cinfo.before, bdva.va_ctime)
4246 4246
4247 4247 /* Actually do the REMOVE operation */
4248 4248 if (vp->v_type == VDIR) {
4249 4249 /*
4250 4250 * Can't remove a directory that has a mounted-on filesystem.
4251 4251 */
4252 4252 if (vn_ismntpt(vp)) {
4253 4253 error = EACCES;
4254 4254 } else {
4255 4255 /*
4256 4256 * System V defines rmdir to return EEXIST,
4257 4257 * not ENOTEMPTY, if the directory is not
4258 4258 * empty. A System V NFS server needs to map
4259 4259 * NFS4ERR_EXIST to NFS4ERR_NOTEMPTY to
4260 4260 * transmit over the wire.
4261 4261 */
4262 4262 if ((error = VOP_RMDIR(dvp, name, ZONE_ROOTVP(), cs->cr,
4263 4263 NULL, 0)) == EEXIST)
4264 4264 error = ENOTEMPTY;
4265 4265 }
4266 4266 } else {
4267 4267 if ((error = VOP_REMOVE(dvp, name, cs->cr, NULL, 0)) == 0 &&
4268 4268 fp != NULL) {
4269 4269 struct vattr va;
4270 4270 vnode_t *tvp;
4271 4271
4272 4272 rfs4_dbe_lock(fp->rf_dbe);
4273 4273 tvp = fp->rf_vp;
4274 4274 if (tvp)
4275 4275 VN_HOLD(tvp);
4276 4276 rfs4_dbe_unlock(fp->rf_dbe);
4277 4277
4278 4278 if (tvp) {
4279 4279 /*
4280 4280 * This is va_seq safe because we are not
4281 4281 * manipulating dvp.
4282 4282 */
4283 4283 va.va_mask = AT_NLINK;
4284 4284 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) &&
4285 4285 va.va_nlink == 0) {
4286 4286 /* Remove state on file remove */
4287 4287 if (in_crit) {
4288 4288 nbl_end_crit(vp);
4289 4289 in_crit = 0;
4290 4290 }
4291 4291 rfs4_close_all_state(fp);
4292 4292 }
4293 4293 VN_RELE(tvp);
4294 4294 }
4295 4295 }
4296 4296 }
4297 4297
4298 4298 if (in_crit)
4299 4299 nbl_end_crit(vp);
4300 4300 VN_RELE(vp);
4301 4301
4302 4302 if (fp) {
4303 4303 rfs4_clear_dont_grant(fp);
4304 4304 rfs4_file_rele(fp);
4305 4305 }
4306 4306 if (nm != name)
4307 4307 kmem_free(name, MAXPATHLEN + 1);
4308 4308 kmem_free(nm, len);
4309 4309
4310 4310 if (error) {
4311 4311 *cs->statusp = resp->status = puterrno4(error);
4312 4312 goto out;
4313 4313 }
4314 4314
4315 4315 /*
4316 4316 * Get the initial "after" sequence number, if it fails, set to zero
4317 4317 */
4318 4318 idva.va_mask = AT_SEQ;
4319 4319 if (VOP_GETATTR(dvp, &idva, 0, cs->cr, NULL))
4320 4320 idva.va_seq = 0;
4321 4321
4322 4322 /*
4323 4323 * Force modified data and metadata out to stable storage.
4324 4324 */
4325 4325 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL);
4326 4326
4327 4327 /*
4328 4328 * Get "after" change value, if it fails, simply return the
4329 4329 * before value.
4330 4330 */
4331 4331 adva.va_mask = AT_CTIME|AT_SEQ;
4332 4332 if (VOP_GETATTR(dvp, &adva, 0, cs->cr, NULL)) {
4333 4333 adva.va_ctime = bdva.va_ctime;
4334 4334 adva.va_seq = 0;
4335 4335 }
4336 4336
4337 4337 NFS4_SET_FATTR4_CHANGE(resp->cinfo.after, adva.va_ctime)
4338 4338
4339 4339 /*
4340 4340 * The cinfo.atomic = TRUE only if we have
4341 4341 * non-zero va_seq's, and it has incremented by exactly one
4342 4342 * during the VOP_REMOVE/RMDIR and it didn't change during
4343 4343 * the VOP_FSYNC.
4344 4344 */
4345 4345 if (bdva.va_seq && idva.va_seq && adva.va_seq &&
4346 4346 idva.va_seq == (bdva.va_seq + 1) && idva.va_seq == adva.va_seq)
4347 4347 resp->cinfo.atomic = TRUE;
4348 4348 else
4349 4349 resp->cinfo.atomic = FALSE;
4350 4350
4351 4351 *cs->statusp = resp->status = NFS4_OK;
4352 4352
4353 4353 out:
4354 4354 DTRACE_NFSV4_2(op__remove__done, struct compound_state *, cs,
4355 4355 REMOVE4res *, resp);
4356 4356 }
4357 4357
4358 4358 /*
4359 4359 * rename: args: SAVED_FH: from directory, CURRENT_FH: target directory,
4360 4360 * oldname and newname.
4361 4361 * res: status. If success - CURRENT_FH unchanged, return change_info
4362 4362 * for both from and target directories.
4363 4363 */
4364 4364 /* ARGSUSED */
4365 4365 static void
4366 4366 rfs4_op_rename(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
4367 4367 struct compound_state *cs)
4368 4368 {
4369 4369 RENAME4args *args = &argop->nfs_argop4_u.oprename;
4370 4370 RENAME4res *resp = &resop->nfs_resop4_u.oprename;
4371 4371 int error;
4372 4372 vnode_t *odvp;
4373 4373 vnode_t *ndvp;
4374 4374 vnode_t *srcvp, *targvp, *tvp;
4375 4375 struct vattr obdva, oidva, oadva;
4376 4376 struct vattr nbdva, nidva, nadva;
4377 4377 char *onm, *nnm;
4378 4378 uint_t olen, nlen;
4379 4379 rfs4_file_t *fp, *sfp;
4380 4380 int in_crit_src, in_crit_targ;
4381 4381 int fp_rele_grant_hold, sfp_rele_grant_hold;
4382 4382 int unlinked;
4383 4383 bslabel_t *clabel;
4384 4384 struct sockaddr *ca;
4385 4385 char *converted_onm = NULL;
4386 4386 char *converted_nnm = NULL;
4387 4387 nfsstat4 status;
4388 4388
4389 4389 DTRACE_NFSV4_2(op__rename__start, struct compound_state *, cs,
4390 4390 RENAME4args *, args);
4391 4391
4392 4392 fp = sfp = NULL;
4393 4393 srcvp = targvp = tvp = NULL;
4394 4394 in_crit_src = in_crit_targ = 0;
4395 4395 fp_rele_grant_hold = sfp_rele_grant_hold = 0;
4396 4396 unlinked = 0;
4397 4397
4398 4398 /* CURRENT_FH: target directory */
4399 4399 ndvp = cs->vp;
4400 4400 if (ndvp == NULL) {
4401 4401 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
4402 4402 goto out;
4403 4403 }
4404 4404
4405 4405 /* SAVED_FH: from directory */
4406 4406 odvp = cs->saved_vp;
4407 4407 if (odvp == NULL) {
4408 4408 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
4409 4409 goto out;
4410 4410 }
4411 4411
4412 4412 if (cs->access == CS_ACCESS_DENIED) {
4413 4413 *cs->statusp = resp->status = NFS4ERR_ACCESS;
4414 4414 goto out;
4415 4415 }
4416 4416
4417 4417 /*
4418 4418 * If there is an unshared filesystem mounted on this vnode,
4419 4419 * do not allow to rename objects in this directory.
4420 4420 */
4421 4421 if (vn_ismntpt(odvp)) {
4422 4422 *cs->statusp = resp->status = NFS4ERR_ACCESS;
4423 4423 goto out;
4424 4424 }
4425 4425
4426 4426 /*
4427 4427 * If there is an unshared filesystem mounted on this vnode,
4428 4428 * do not allow to rename to this directory.
4429 4429 */
4430 4430 if (vn_ismntpt(ndvp)) {
4431 4431 *cs->statusp = resp->status = NFS4ERR_ACCESS;
4432 4432 goto out;
4433 4433 }
4434 4434
4435 4435 if (odvp->v_type != VDIR || ndvp->v_type != VDIR) {
4436 4436 *cs->statusp = resp->status = NFS4ERR_NOTDIR;
4437 4437 goto out;
4438 4438 }
4439 4439
4440 4440 if (cs->saved_exi != cs->exi) {
4441 4441 *cs->statusp = resp->status = NFS4ERR_XDEV;
4442 4442 goto out;
4443 4443 }
4444 4444
4445 4445 status = utf8_dir_verify(&args->oldname);
4446 4446 if (status != NFS4_OK) {
4447 4447 *cs->statusp = resp->status = status;
4448 4448 goto out;
4449 4449 }
4450 4450
4451 4451 status = utf8_dir_verify(&args->newname);
4452 4452 if (status != NFS4_OK) {
4453 4453 *cs->statusp = resp->status = status;
4454 4454 goto out;
4455 4455 }
4456 4456
4457 4457 onm = utf8_to_fn(&args->oldname, &olen, NULL);
4458 4458 if (onm == NULL) {
4459 4459 *cs->statusp = resp->status = NFS4ERR_INVAL;
4460 4460 goto out;
4461 4461 }
4462 4462 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
4463 4463 nlen = MAXPATHLEN + 1;
4464 4464 converted_onm = nfscmd_convname(ca, cs->exi, onm, NFSCMD_CONV_INBOUND,
4465 4465 nlen);
4466 4466
4467 4467 if (converted_onm == NULL) {
4468 4468 *cs->statusp = resp->status = NFS4ERR_INVAL;
4469 4469 kmem_free(onm, olen);
4470 4470 goto out;
4471 4471 }
4472 4472
4473 4473 nnm = utf8_to_fn(&args->newname, &nlen, NULL);
4474 4474 if (nnm == NULL) {
4475 4475 *cs->statusp = resp->status = NFS4ERR_INVAL;
4476 4476 if (onm != converted_onm)
4477 4477 kmem_free(converted_onm, MAXPATHLEN + 1);
4478 4478 kmem_free(onm, olen);
4479 4479 goto out;
4480 4480 }
4481 4481 converted_nnm = nfscmd_convname(ca, cs->exi, nnm, NFSCMD_CONV_INBOUND,
4482 4482 MAXPATHLEN + 1);
4483 4483
4484 4484 if (converted_nnm == NULL) {
4485 4485 *cs->statusp = resp->status = NFS4ERR_INVAL;
4486 4486 kmem_free(nnm, nlen);
4487 4487 nnm = NULL;
4488 4488 if (onm != converted_onm)
4489 4489 kmem_free(converted_onm, MAXPATHLEN + 1);
4490 4490 kmem_free(onm, olen);
4491 4491 goto out;
4492 4492 }
4493 4493
4494 4494
4495 4495 if (olen > MAXNAMELEN || nlen > MAXNAMELEN) {
4496 4496 *cs->statusp = resp->status = NFS4ERR_NAMETOOLONG;
4497 4497 kmem_free(onm, olen);
4498 4498 kmem_free(nnm, nlen);
4499 4499 goto out;
4500 4500 }
4501 4501
4502 4502
4503 4503 if (rdonly4(req, cs)) {
4504 4504 *cs->statusp = resp->status = NFS4ERR_ROFS;
4505 4505 if (onm != converted_onm)
4506 4506 kmem_free(converted_onm, MAXPATHLEN + 1);
4507 4507 kmem_free(onm, olen);
4508 4508 if (nnm != converted_nnm)
4509 4509 kmem_free(converted_nnm, MAXPATHLEN + 1);
4510 4510 kmem_free(nnm, nlen);
4511 4511 goto out;
4512 4512 }
4513 4513
4514 4514 /* check label of the target dir */
4515 4515 if (is_system_labeled()) {
4516 4516 ASSERT(req->rq_label != NULL);
4517 4517 clabel = req->rq_label;
4518 4518 DTRACE_PROBE2(tx__rfs4__log__info__oprename__clabel, char *,
4519 4519 "got client label from request(1)",
4520 4520 struct svc_req *, req);
4521 4521 if (!blequal(&l_admin_low->tsl_label, clabel)) {
4522 4522 if (!do_rfs_label_check(clabel, ndvp,
4523 4523 EQUALITY_CHECK, cs->exi)) {
4524 4524 *cs->statusp = resp->status = NFS4ERR_ACCESS;
4525 4525 goto err_out;
4526 4526 }
4527 4527 }
4528 4528 }
4529 4529
4530 4530 /*
4531 4531 * Is the source a file and have a delegation?
4532 4532 * We don't need to acquire va_seq before these lookups, if
4533 4533 * it causes an update, cinfo.before will not match, which will
4534 4534 * trigger a cache flush even if atomic is TRUE.
4535 4535 */
4536 4536 if (sfp = rfs4_lookup_and_findfile(odvp, converted_onm, &srcvp,
4537 4537 &error, cs->cr)) {
4538 4538 if (rfs4_check_delegated_byfp(FWRITE, sfp, TRUE, TRUE, TRUE,
4539 4539 NULL)) {
4540 4540 *cs->statusp = resp->status = NFS4ERR_DELAY;
4541 4541 goto err_out;
4542 4542 }
4543 4543 }
4544 4544
4545 4545 if (srcvp == NULL) {
4546 4546 *cs->statusp = resp->status = puterrno4(error);
4547 4547 if (onm != converted_onm)
4548 4548 kmem_free(converted_onm, MAXPATHLEN + 1);
4549 4549 kmem_free(onm, olen);
4550 4550 if (nnm != converted_nnm)
4551 4551 kmem_free(converted_nnm, MAXPATHLEN + 1);
4552 4552 kmem_free(nnm, nlen);
4553 4553 goto out;
4554 4554 }
4555 4555
4556 4556 sfp_rele_grant_hold = 1;
4557 4557
4558 4558 /* Does the destination exist and a file and have a delegation? */
4559 4559 if (fp = rfs4_lookup_and_findfile(ndvp, converted_nnm, &targvp,
4560 4560 NULL, cs->cr)) {
4561 4561 if (rfs4_check_delegated_byfp(FWRITE, fp, TRUE, TRUE, TRUE,
4562 4562 NULL)) {
4563 4563 *cs->statusp = resp->status = NFS4ERR_DELAY;
4564 4564 goto err_out;
4565 4565 }
4566 4566 }
4567 4567 fp_rele_grant_hold = 1;
4568 4568
4569 4569 /* Check for NBMAND lock on both source and target */
4570 4570 if (nbl_need_check(srcvp)) {
4571 4571 nbl_start_crit(srcvp, RW_READER);
4572 4572 in_crit_src = 1;
4573 4573 if (nbl_conflict(srcvp, NBL_RENAME, 0, 0, 0, NULL)) {
4574 4574 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN;
4575 4575 goto err_out;
4576 4576 }
4577 4577 }
4578 4578
4579 4579 if (targvp && nbl_need_check(targvp)) {
4580 4580 nbl_start_crit(targvp, RW_READER);
4581 4581 in_crit_targ = 1;
4582 4582 if (nbl_conflict(targvp, NBL_REMOVE, 0, 0, 0, NULL)) {
4583 4583 *cs->statusp = resp->status = NFS4ERR_FILE_OPEN;
4584 4584 goto err_out;
4585 4585 }
4586 4586 }
4587 4587
4588 4588 /* Get source "before" change value */
4589 4589 obdva.va_mask = AT_CTIME|AT_SEQ;
4590 4590 error = VOP_GETATTR(odvp, &obdva, 0, cs->cr, NULL);
4591 4591 if (!error) {
4592 4592 nbdva.va_mask = AT_CTIME|AT_SEQ;
4593 4593 error = VOP_GETATTR(ndvp, &nbdva, 0, cs->cr, NULL);
4594 4594 }
4595 4595 if (error) {
4596 4596 *cs->statusp = resp->status = puterrno4(error);
4597 4597 goto err_out;
4598 4598 }
4599 4599
4600 4600 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.before, obdva.va_ctime)
4601 4601 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.before, nbdva.va_ctime)
4602 4602
4603 4603 error = VOP_RENAME(odvp, converted_onm, ndvp, converted_nnm, cs->cr,
4604 4604 NULL, 0);
4605 4605
4606 4606 /*
4607 4607 * If target existed and was unlinked by VOP_RENAME, state will need
4608 4608 * closed. To avoid deadlock, rfs4_close_all_state will be done after
4609 4609 * any necessary nbl_end_crit on srcvp and tgtvp.
4610 4610 */
4611 4611 if (error == 0 && fp != NULL) {
4612 4612 rfs4_dbe_lock(fp->rf_dbe);
4613 4613 tvp = fp->rf_vp;
4614 4614 if (tvp)
4615 4615 VN_HOLD(tvp);
4616 4616 rfs4_dbe_unlock(fp->rf_dbe);
4617 4617
4618 4618 if (tvp) {
4619 4619 struct vattr va;
4620 4620 va.va_mask = AT_NLINK;
4621 4621
4622 4622 if (!VOP_GETATTR(tvp, &va, 0, cs->cr, NULL) &&
4623 4623 va.va_nlink == 0) {
4624 4624 unlinked = 1;
4625 4625
4626 4626 /* DEBUG data */
4627 4627 if ((srcvp == targvp) || (tvp != targvp)) {
4628 4628 cmn_err(CE_WARN, "rfs4_op_rename: "
4629 4629 "srcvp %p, targvp: %p, tvp: %p",
4630 4630 (void *)srcvp, (void *)targvp,
4631 4631 (void *)tvp);
4632 4632 }
4633 4633 } else {
4634 4634 VN_RELE(tvp);
4635 4635 }
4636 4636 }
4637 4637 }
4638 4638 if (error == 0)
4639 4639 vn_renamepath(ndvp, srcvp, nnm, nlen - 1);
4640 4640
4641 4641 if (in_crit_src)
4642 4642 nbl_end_crit(srcvp);
4643 4643 if (srcvp)
4644 4644 VN_RELE(srcvp);
4645 4645 if (in_crit_targ)
4646 4646 nbl_end_crit(targvp);
4647 4647 if (targvp)
4648 4648 VN_RELE(targvp);
4649 4649
4650 4650 if (unlinked) {
4651 4651 ASSERT(fp != NULL);
4652 4652 ASSERT(tvp != NULL);
4653 4653
4654 4654 /* DEBUG data */
4655 4655 if (RW_READ_HELD(&tvp->v_nbllock)) {
4656 4656 cmn_err(CE_WARN, "rfs4_op_rename: "
4657 4657 "RW_READ_HELD(%p)", (void *)tvp);
4658 4658 }
4659 4659
4660 4660 /* The file is gone and so should the state */
4661 4661 rfs4_close_all_state(fp);
4662 4662 VN_RELE(tvp);
4663 4663 }
4664 4664
4665 4665 if (sfp) {
4666 4666 rfs4_clear_dont_grant(sfp);
4667 4667 rfs4_file_rele(sfp);
4668 4668 }
4669 4669 if (fp) {
4670 4670 rfs4_clear_dont_grant(fp);
4671 4671 rfs4_file_rele(fp);
4672 4672 }
4673 4673
4674 4674 if (converted_onm != onm)
4675 4675 kmem_free(converted_onm, MAXPATHLEN + 1);
4676 4676 kmem_free(onm, olen);
4677 4677 if (converted_nnm != nnm)
4678 4678 kmem_free(converted_nnm, MAXPATHLEN + 1);
4679 4679 kmem_free(nnm, nlen);
4680 4680
4681 4681 /*
4682 4682 * Get the initial "after" sequence number, if it fails, set to zero
4683 4683 */
4684 4684 oidva.va_mask = AT_SEQ;
4685 4685 if (VOP_GETATTR(odvp, &oidva, 0, cs->cr, NULL))
4686 4686 oidva.va_seq = 0;
4687 4687
4688 4688 nidva.va_mask = AT_SEQ;
4689 4689 if (VOP_GETATTR(ndvp, &nidva, 0, cs->cr, NULL))
4690 4690 nidva.va_seq = 0;
4691 4691
4692 4692 /*
4693 4693 * Force modified data and metadata out to stable storage.
4694 4694 */
4695 4695 (void) VOP_FSYNC(odvp, 0, cs->cr, NULL);
4696 4696 (void) VOP_FSYNC(ndvp, 0, cs->cr, NULL);
4697 4697
4698 4698 if (error) {
4699 4699 *cs->statusp = resp->status = puterrno4(error);
4700 4700 goto out;
4701 4701 }
4702 4702
4703 4703 /*
4704 4704 * Get "after" change values, if it fails, simply return the
4705 4705 * before value.
4706 4706 */
4707 4707 oadva.va_mask = AT_CTIME|AT_SEQ;
4708 4708 if (VOP_GETATTR(odvp, &oadva, 0, cs->cr, NULL)) {
4709 4709 oadva.va_ctime = obdva.va_ctime;
4710 4710 oadva.va_seq = 0;
4711 4711 }
4712 4712
4713 4713 nadva.va_mask = AT_CTIME|AT_SEQ;
4714 4714 if (VOP_GETATTR(odvp, &nadva, 0, cs->cr, NULL)) {
4715 4715 nadva.va_ctime = nbdva.va_ctime;
4716 4716 nadva.va_seq = 0;
4717 4717 }
4718 4718
4719 4719 NFS4_SET_FATTR4_CHANGE(resp->source_cinfo.after, oadva.va_ctime)
4720 4720 NFS4_SET_FATTR4_CHANGE(resp->target_cinfo.after, nadva.va_ctime)
4721 4721
4722 4722 /*
4723 4723 * The cinfo.atomic = TRUE only if we have
4724 4724 * non-zero va_seq's, and it has incremented by exactly one
4725 4725 * during the VOP_RENAME and it didn't change during the VOP_FSYNC.
4726 4726 */
4727 4727 if (obdva.va_seq && oidva.va_seq && oadva.va_seq &&
4728 4728 oidva.va_seq == (obdva.va_seq + 1) && oidva.va_seq == oadva.va_seq)
4729 4729 resp->source_cinfo.atomic = TRUE;
4730 4730 else
4731 4731 resp->source_cinfo.atomic = FALSE;
4732 4732
4733 4733 if (nbdva.va_seq && nidva.va_seq && nadva.va_seq &&
4734 4734 nidva.va_seq == (nbdva.va_seq + 1) && nidva.va_seq == nadva.va_seq)
4735 4735 resp->target_cinfo.atomic = TRUE;
4736 4736 else
4737 4737 resp->target_cinfo.atomic = FALSE;
4738 4738
4739 4739 #ifdef VOLATILE_FH_TEST
4740 4740 {
4741 4741 extern void add_volrnm_fh(struct exportinfo *, vnode_t *);
4742 4742
4743 4743 /*
4744 4744 * Add the renamed file handle to the volatile rename list
4745 4745 */
4746 4746 if (cs->exi->exi_export.ex_flags & EX_VOLRNM) {
4747 4747 /* file handles may expire on rename */
4748 4748 vnode_t *vp;
4749 4749
4750 4750 nnm = utf8_to_fn(&args->newname, &nlen, NULL);
4751 4751 /*
4752 4752 * Already know that nnm will be a valid string
4753 4753 */
4754 4754 error = VOP_LOOKUP(ndvp, nnm, &vp, NULL, 0, NULL, cs->cr,
4755 4755 NULL, NULL, NULL);
4756 4756 kmem_free(nnm, nlen);
4757 4757 if (!error) {
4758 4758 add_volrnm_fh(cs->exi, vp);
4759 4759 VN_RELE(vp);
4760 4760 }
4761 4761 }
4762 4762 }
4763 4763 #endif /* VOLATILE_FH_TEST */
4764 4764
4765 4765 *cs->statusp = resp->status = NFS4_OK;
4766 4766 out:
4767 4767 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs,
4768 4768 RENAME4res *, resp);
4769 4769 return;
4770 4770
4771 4771 err_out:
4772 4772 if (onm != converted_onm)
4773 4773 kmem_free(converted_onm, MAXPATHLEN + 1);
4774 4774 if (onm != NULL)
4775 4775 kmem_free(onm, olen);
4776 4776 if (nnm != converted_nnm)
4777 4777 kmem_free(converted_nnm, MAXPATHLEN + 1);
4778 4778 if (nnm != NULL)
4779 4779 kmem_free(nnm, nlen);
4780 4780
4781 4781 if (in_crit_src) nbl_end_crit(srcvp);
4782 4782 if (in_crit_targ) nbl_end_crit(targvp);
4783 4783 if (targvp) VN_RELE(targvp);
4784 4784 if (srcvp) VN_RELE(srcvp);
4785 4785 if (sfp) {
4786 4786 if (sfp_rele_grant_hold) rfs4_clear_dont_grant(sfp);
4787 4787 rfs4_file_rele(sfp);
4788 4788 }
4789 4789 if (fp) {
4790 4790 if (fp_rele_grant_hold) rfs4_clear_dont_grant(fp);
4791 4791 rfs4_file_rele(fp);
4792 4792 }
4793 4793
4794 4794 DTRACE_NFSV4_2(op__rename__done, struct compound_state *, cs,
4795 4795 RENAME4res *, resp);
4796 4796 }
4797 4797
4798 4798 /* ARGSUSED */
4799 4799 static void
4800 4800 rfs4_op_renew(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
4801 4801 struct compound_state *cs)
4802 4802 {
4803 4803 RENEW4args *args = &argop->nfs_argop4_u.oprenew;
4804 4804 RENEW4res *resp = &resop->nfs_resop4_u.oprenew;
4805 4805 rfs4_client_t *cp;
4806 4806
4807 4807 DTRACE_NFSV4_2(op__renew__start, struct compound_state *, cs,
4808 4808 RENEW4args *, args);
4809 4809
4810 4810 if ((cp = rfs4_findclient_by_id(args->clientid, FALSE)) == NULL) {
4811 4811 *cs->statusp = resp->status =
4812 4812 rfs4_check_clientid(&args->clientid, 0);
4813 4813 goto out;
4814 4814 }
4815 4815
4816 4816 if (rfs4_lease_expired(cp)) {
4817 4817 rfs4_client_rele(cp);
4818 4818 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
4819 4819 goto out;
4820 4820 }
4821 4821
4822 4822 rfs4_update_lease(cp);
4823 4823
4824 4824 mutex_enter(cp->rc_cbinfo.cb_lock);
4825 4825 if (cp->rc_cbinfo.cb_notified_of_cb_path_down == FALSE) {
4826 4826 cp->rc_cbinfo.cb_notified_of_cb_path_down = TRUE;
4827 4827 *cs->statusp = resp->status = NFS4ERR_CB_PATH_DOWN;
4828 4828 } else {
4829 4829 *cs->statusp = resp->status = NFS4_OK;
4830 4830 }
4831 4831 mutex_exit(cp->rc_cbinfo.cb_lock);
4832 4832
4833 4833 rfs4_client_rele(cp);
4834 4834
4835 4835 out:
4836 4836 DTRACE_NFSV4_2(op__renew__done, struct compound_state *, cs,
4837 4837 RENEW4res *, resp);
4838 4838 }
4839 4839
4840 4840 /* ARGSUSED */
4841 4841 static void
4842 4842 rfs4_op_restorefh(nfs_argop4 *args, nfs_resop4 *resop, struct svc_req *req,
4843 4843 struct compound_state *cs)
4844 4844 {
4845 4845 RESTOREFH4res *resp = &resop->nfs_resop4_u.oprestorefh;
4846 4846
4847 4847 DTRACE_NFSV4_1(op__restorefh__start, struct compound_state *, cs);
4848 4848
4849 4849 /* No need to check cs->access - we are not accessing any object */
4850 4850 if ((cs->saved_vp == NULL) || (cs->saved_fh.nfs_fh4_val == NULL)) {
4851 4851 *cs->statusp = resp->status = NFS4ERR_RESTOREFH;
4852 4852 goto out;
4853 4853 }
4854 4854 if (cs->vp != NULL) {
4855 4855 VN_RELE(cs->vp);
4856 4856 }
4857 4857 cs->vp = cs->saved_vp;
4858 4858 cs->saved_vp = NULL;
4859 4859 cs->exi = cs->saved_exi;
4860 4860 nfs_fh4_copy(&cs->saved_fh, &cs->fh);
4861 4861 *cs->statusp = resp->status = NFS4_OK;
4862 4862 cs->deleg = FALSE;
4863 4863
4864 4864 out:
4865 4865 DTRACE_NFSV4_2(op__restorefh__done, struct compound_state *, cs,
4866 4866 RESTOREFH4res *, resp);
4867 4867 }
4868 4868
4869 4869 /* ARGSUSED */
4870 4870 static void
4871 4871 rfs4_op_savefh(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
4872 4872 struct compound_state *cs)
4873 4873 {
4874 4874 SAVEFH4res *resp = &resop->nfs_resop4_u.opsavefh;
4875 4875
4876 4876 DTRACE_NFSV4_1(op__savefh__start, struct compound_state *, cs);
4877 4877
4878 4878 /* No need to check cs->access - we are not accessing any object */
4879 4879 if (cs->vp == NULL) {
4880 4880 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
4881 4881 goto out;
4882 4882 }
4883 4883 if (cs->saved_vp != NULL) {
4884 4884 VN_RELE(cs->saved_vp);
4885 4885 }
4886 4886 cs->saved_vp = cs->vp;
4887 4887 VN_HOLD(cs->saved_vp);
4888 4888 cs->saved_exi = cs->exi;
4889 4889 /*
4890 4890 * since SAVEFH is fairly rare, don't alloc space for its fh
4891 4891 * unless necessary.
4892 4892 */
4893 4893 if (cs->saved_fh.nfs_fh4_val == NULL) {
4894 4894 cs->saved_fh.nfs_fh4_val = kmem_alloc(NFS4_FHSIZE, KM_SLEEP);
4895 4895 }
4896 4896 nfs_fh4_copy(&cs->fh, &cs->saved_fh);
4897 4897 *cs->statusp = resp->status = NFS4_OK;
4898 4898
4899 4899 out:
4900 4900 DTRACE_NFSV4_2(op__savefh__done, struct compound_state *, cs,
4901 4901 SAVEFH4res *, resp);
4902 4902 }
4903 4903
4904 4904 /*
4905 4905 * rfs4_verify_attr is called when nfsv4 Setattr failed, but we wish to
4906 4906 * return the bitmap of attrs that were set successfully. It is also
4907 4907 * called by Verify/Nverify to test the vattr/vfsstat attrs. It should
4908 4908 * always be called only after rfs4_do_set_attrs().
4909 4909 *
4910 4910 * Verify that the attributes are same as the expected ones. sargp->vap
4911 4911 * and sargp->sbp contain the input attributes as translated from fattr4.
4912 4912 *
4913 4913 * This function verifies only the attrs that correspond to a vattr or
4914 4914 * vfsstat struct. That is because of the extra step needed to get the
4915 4915 * corresponding system structs. Other attributes have already been set or
4916 4916 * verified by do_rfs4_set_attrs.
4917 4917 *
4918 4918 * Return 0 if all attrs match, -1 if some don't, error if error processing.
4919 4919 */
4920 4920 static int
4921 4921 rfs4_verify_attr(struct nfs4_svgetit_arg *sargp,
4922 4922 bitmap4 *resp, struct nfs4_ntov_table *ntovp)
4923 4923 {
4924 4924 int error, ret_error = 0;
4925 4925 int i, k;
4926 4926 uint_t sva_mask = sargp->vap->va_mask;
4927 4927 uint_t vbit;
4928 4928 union nfs4_attr_u *na;
4929 4929 uint8_t *amap;
4930 4930 bool_t getsb = ntovp->vfsstat;
4931 4931
4932 4932 if (sva_mask != 0) {
4933 4933 /*
4934 4934 * Okay to overwrite sargp->vap because we verify based
4935 4935 * on the incoming values.
4936 4936 */
4937 4937 ret_error = VOP_GETATTR(sargp->cs->vp, sargp->vap, 0,
4938 4938 sargp->cs->cr, NULL);
4939 4939 if (ret_error) {
4940 4940 if (resp == NULL)
4941 4941 return (ret_error);
4942 4942 /*
4943 4943 * Must return bitmap of successful attrs
4944 4944 */
4945 4945 sva_mask = 0; /* to prevent checking vap later */
4946 4946 } else {
4947 4947 /*
4948 4948 * Some file systems clobber va_mask. it is probably
4949 4949 * wrong of them to do so, nonethless we practice
4950 4950 * defensive coding.
4951 4951 * See bug id 4276830.
4952 4952 */
4953 4953 sargp->vap->va_mask = sva_mask;
4954 4954 }
4955 4955 }
4956 4956
4957 4957 if (getsb) {
4958 4958 /*
4959 4959 * Now get the superblock and loop on the bitmap, as there is
4960 4960 * no simple way of translating from superblock to bitmap4.
4961 4961 */
4962 4962 ret_error = VFS_STATVFS(sargp->cs->vp->v_vfsp, sargp->sbp);
4963 4963 if (ret_error) {
4964 4964 if (resp == NULL)
4965 4965 goto errout;
4966 4966 getsb = FALSE;
4967 4967 }
4968 4968 }
4969 4969
4970 4970 /*
4971 4971 * Now loop and verify each attribute which getattr returned
4972 4972 * whether it's the same as the input.
4973 4973 */
4974 4974 if (resp == NULL && !getsb && (sva_mask == 0))
4975 4975 goto errout;
4976 4976
4977 4977 na = ntovp->na;
4978 4978 amap = ntovp->amap;
4979 4979 k = 0;
4980 4980 for (i = 0; i < ntovp->attrcnt; i++, na++, amap++) {
4981 4981 k = *amap;
4982 4982 ASSERT(nfs4_ntov_map[k].nval == k);
4983 4983 vbit = nfs4_ntov_map[k].vbit;
4984 4984
4985 4985 /*
4986 4986 * If vattr attribute but VOP_GETATTR failed, or it's
4987 4987 * superblock attribute but VFS_STATVFS failed, skip
4988 4988 */
4989 4989 if (vbit) {
4990 4990 if ((vbit & sva_mask) == 0)
4991 4991 continue;
4992 4992 } else if (!(getsb && nfs4_ntov_map[k].vfsstat)) {
4993 4993 continue;
4994 4994 }
4995 4995 error = (*nfs4_ntov_map[k].sv_getit)(NFS4ATTR_VERIT, sargp, na);
4996 4996 if (resp != NULL) {
4997 4997 if (error)
4998 4998 ret_error = -1; /* not all match */
4999 4999 else /* update response bitmap */
5000 5000 *resp |= nfs4_ntov_map[k].fbit;
5001 5001 continue;
5002 5002 }
5003 5003 if (error) {
5004 5004 ret_error = -1; /* not all match */
5005 5005 break;
5006 5006 }
5007 5007 }
5008 5008 errout:
5009 5009 return (ret_error);
5010 5010 }
5011 5011
5012 5012 /*
5013 5013 * Decode the attribute to be set/verified. If the attr requires a sys op
5014 5014 * (VOP_GETATTR, VFS_VFSSTAT), and the request is to verify, then don't
5015 5015 * call the sv_getit function for it, because the sys op hasn't yet been done.
5016 5016 * Return 0 for success, error code if failed.
5017 5017 *
5018 5018 * Note: the decoded arg is not freed here but in nfs4_ntov_table_free.
5019 5019 */
5020 5020 static int
5021 5021 decode_fattr4_attr(nfs4_attr_cmd_t cmd, struct nfs4_svgetit_arg *sargp,
5022 5022 int k, XDR *xdrp, bitmap4 *resp_bval, union nfs4_attr_u *nap)
5023 5023 {
5024 5024 int error = 0;
5025 5025 bool_t set_later;
5026 5026
5027 5027 sargp->vap->va_mask |= nfs4_ntov_map[k].vbit;
5028 5028
5029 5029 if ((*nfs4_ntov_map[k].xfunc)(xdrp, nap)) {
5030 5030 set_later = nfs4_ntov_map[k].vbit || nfs4_ntov_map[k].vfsstat;
5031 5031 /*
5032 5032 * don't verify yet if a vattr or sb dependent attr,
5033 5033 * because we don't have their sys values yet.
5034 5034 * Will be done later.
5035 5035 */
5036 5036 if (! (set_later && (cmd == NFS4ATTR_VERIT))) {
5037 5037 /*
5038 5038 * ACLs are a special case, since setting the MODE
5039 5039 * conflicts with setting the ACL. We delay setting
5040 5040 * the ACL until all other attributes have been set.
5041 5041 * The ACL gets set in do_rfs4_op_setattr().
5042 5042 */
5043 5043 if (nfs4_ntov_map[k].fbit != FATTR4_ACL_MASK) {
5044 5044 error = (*nfs4_ntov_map[k].sv_getit)(cmd,
5045 5045 sargp, nap);
5046 5046 if (error) {
5047 5047 xdr_free(nfs4_ntov_map[k].xfunc,
5048 5048 (caddr_t)nap);
5049 5049 }
5050 5050 }
5051 5051 }
5052 5052 } else {
5053 5053 #ifdef DEBUG
5054 5054 cmn_err(CE_NOTE, "decode_fattr4_attr: error "
5055 5055 "decoding attribute %d\n", k);
5056 5056 #endif
5057 5057 error = EINVAL;
5058 5058 }
5059 5059 if (!error && resp_bval && !set_later) {
5060 5060 *resp_bval |= nfs4_ntov_map[k].fbit;
5061 5061 }
5062 5062
5063 5063 return (error);
5064 5064 }
5065 5065
5066 5066 /*
5067 5067 * Set vattr based on incoming fattr4 attrs - used by setattr.
5068 5068 * Set response mask. Ignore any values that are not writable vattr attrs.
5069 5069 */
5070 5070 static nfsstat4
5071 5071 do_rfs4_set_attrs(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs,
5072 5072 struct nfs4_svgetit_arg *sargp, struct nfs4_ntov_table *ntovp,
5073 5073 nfs4_attr_cmd_t cmd)
5074 5074 {
5075 5075 int error = 0;
5076 5076 int i;
5077 5077 char *attrs = fattrp->attrlist4;
5078 5078 uint32_t attrslen = fattrp->attrlist4_len;
5079 5079 XDR xdr;
5080 5080 nfsstat4 status = NFS4_OK;
5081 5081 vnode_t *vp = cs->vp;
5082 5082 union nfs4_attr_u *na;
5083 5083 uint8_t *amap;
5084 5084
5085 5085 #ifndef lint
5086 5086 /*
5087 5087 * Make sure that maximum attribute number can be expressed as an
5088 5088 * 8 bit quantity.
5089 5089 */
5090 5090 ASSERT(NFS4_MAXNUM_ATTRS <= (UINT8_MAX + 1));
5091 5091 #endif
5092 5092
5093 5093 if (vp == NULL) {
5094 5094 if (resp)
5095 5095 *resp = 0;
5096 5096 return (NFS4ERR_NOFILEHANDLE);
5097 5097 }
5098 5098 if (cs->access == CS_ACCESS_DENIED) {
5099 5099 if (resp)
5100 5100 *resp = 0;
5101 5101 return (NFS4ERR_ACCESS);
5102 5102 }
5103 5103
5104 5104 sargp->op = cmd;
5105 5105 sargp->cs = cs;
5106 5106 sargp->flag = 0; /* may be set later */
5107 5107 sargp->vap->va_mask = 0;
5108 5108 sargp->rdattr_error = NFS4_OK;
5109 5109 sargp->rdattr_error_req = FALSE;
5110 5110 /* sargp->sbp is set by the caller */
5111 5111
5112 5112 xdrmem_create(&xdr, attrs, attrslen, XDR_DECODE);
5113 5113
5114 5114 na = ntovp->na;
5115 5115 amap = ntovp->amap;
5116 5116
5117 5117 /*
5118 5118 * The following loop iterates on the nfs4_ntov_map checking
5119 5119 * if the fbit is set in the requested bitmap.
5120 5120 * If set then we process the arguments using the
5121 5121 * rfs4_fattr4 conversion functions to populate the setattr
5122 5122 * vattr and va_mask. Any settable attrs that are not using vattr
5123 5123 * will be set in this loop.
5124 5124 */
5125 5125 for (i = 0; i < nfs4_ntov_map_size; i++) {
5126 5126 if (!(fattrp->attrmask & nfs4_ntov_map[i].fbit)) {
5127 5127 continue;
5128 5128 }
5129 5129 /*
5130 5130 * If setattr, must be a writable attr.
5131 5131 * If verify/nverify, must be a readable attr.
5132 5132 */
5133 5133 if ((error = (*nfs4_ntov_map[i].sv_getit)(
5134 5134 NFS4ATTR_SUPPORTED, sargp, NULL)) != 0) {
5135 5135 /*
5136 5136 * Client tries to set/verify an
5137 5137 * unsupported attribute, tries to set
5138 5138 * a read only attr or verify a write
5139 5139 * only one - error!
5140 5140 */
5141 5141 break;
5142 5142 }
5143 5143 /*
5144 5144 * Decode the attribute to set/verify
5145 5145 */
5146 5146 error = decode_fattr4_attr(cmd, sargp, nfs4_ntov_map[i].nval,
5147 5147 &xdr, resp ? resp : NULL, na);
5148 5148 if (error)
5149 5149 break;
5150 5150 *amap++ = (uint8_t)nfs4_ntov_map[i].nval;
5151 5151 na++;
5152 5152 (ntovp->attrcnt)++;
5153 5153 if (nfs4_ntov_map[i].vfsstat)
5154 5154 ntovp->vfsstat = TRUE;
5155 5155 }
5156 5156
5157 5157 if (error != 0)
5158 5158 status = (error == ENOTSUP ? NFS4ERR_ATTRNOTSUPP :
5159 5159 puterrno4(error));
5160 5160 /* xdrmem_destroy(&xdrs); */ /* NO-OP */
5161 5161 return (status);
5162 5162 }
5163 5163
5164 5164 static nfsstat4
5165 5165 do_rfs4_op_setattr(bitmap4 *resp, fattr4 *fattrp, struct compound_state *cs,
5166 5166 stateid4 *stateid)
5167 5167 {
5168 5168 int error = 0;
5169 5169 struct nfs4_svgetit_arg sarg;
5170 5170 bool_t trunc;
5171 5171
5172 5172 nfsstat4 status = NFS4_OK;
5173 5173 cred_t *cr = cs->cr;
5174 5174 vnode_t *vp = cs->vp;
5175 5175 struct nfs4_ntov_table ntov;
5176 5176 struct statvfs64 sb;
5177 5177 struct vattr bva;
5178 5178 struct flock64 bf;
5179 5179 int in_crit = 0;
5180 5180 uint_t saved_mask = 0;
5181 5181 caller_context_t ct;
5182 5182
5183 5183 *resp = 0;
5184 5184 sarg.sbp = &sb;
5185 5185 sarg.is_referral = B_FALSE;
5186 5186 nfs4_ntov_table_init(&ntov);
5187 5187 status = do_rfs4_set_attrs(resp, fattrp, cs, &sarg, &ntov,
5188 5188 NFS4ATTR_SETIT);
5189 5189 if (status != NFS4_OK) {
5190 5190 /*
5191 5191 * failed set attrs
5192 5192 */
5193 5193 goto done;
5194 5194 }
5195 5195 if ((sarg.vap->va_mask == 0) &&
5196 5196 (! (fattrp->attrmask & FATTR4_ACL_MASK))) {
5197 5197 /*
5198 5198 * no further work to be done
5199 5199 */
5200 5200 goto done;
5201 5201 }
5202 5202
5203 5203 /*
5204 5204 * If we got a request to set the ACL and the MODE, only
5205 5205 * allow changing VSUID, VSGID, and VSVTX. Attempting
5206 5206 * to change any other bits, along with setting an ACL,
5207 5207 * gives NFS4ERR_INVAL.
5208 5208 */
5209 5209 if ((fattrp->attrmask & FATTR4_ACL_MASK) &&
5210 5210 (fattrp->attrmask & FATTR4_MODE_MASK)) {
5211 5211 vattr_t va;
5212 5212
5213 5213 va.va_mask = AT_MODE;
5214 5214 error = VOP_GETATTR(vp, &va, 0, cs->cr, NULL);
5215 5215 if (error) {
5216 5216 status = puterrno4(error);
5217 5217 goto done;
5218 5218 }
5219 5219 if ((sarg.vap->va_mode ^ va.va_mode) &
5220 5220 ~(VSUID | VSGID | VSVTX)) {
5221 5221 status = NFS4ERR_INVAL;
5222 5222 goto done;
5223 5223 }
5224 5224 }
5225 5225
5226 5226 /* Check stateid only if size has been set */
5227 5227 if (sarg.vap->va_mask & AT_SIZE) {
5228 5228 trunc = (sarg.vap->va_size == 0);
5229 5229 status = rfs4_check_stateid(FWRITE, cs->vp, stateid,
5230 5230 trunc, &cs->deleg, sarg.vap->va_mask & AT_SIZE, &ct);
5231 5231 if (status != NFS4_OK)
5232 5232 goto done;
5233 5233 } else {
5234 5234 ct.cc_sysid = 0;
5235 5235 ct.cc_pid = 0;
5236 5236 ct.cc_caller_id = nfs4_srv_caller_id;
5237 5237 ct.cc_flags = CC_DONTBLOCK;
5238 5238 }
5239 5239
5240 5240 /* XXX start of possible race with delegations */
5241 5241
5242 5242 /*
5243 5243 * We need to specially handle size changes because it is
5244 5244 * possible for the client to create a file with read-only
5245 5245 * modes, but with the file opened for writing. If the client
5246 5246 * then tries to set the file size, e.g. ftruncate(3C),
5247 5247 * fcntl(F_FREESP), the normal access checking done in
5248 5248 * VOP_SETATTR would prevent the client from doing it even though
5249 5249 * it should be allowed to do so. To get around this, we do the
5250 5250 * access checking for ourselves and use VOP_SPACE which doesn't
5251 5251 * do the access checking.
5252 5252 * Also the client should not be allowed to change the file
5253 5253 * size if there is a conflicting non-blocking mandatory lock in
5254 5254 * the region of the change.
5255 5255 */
5256 5256 if (vp->v_type == VREG && (sarg.vap->va_mask & AT_SIZE)) {
5257 5257 u_offset_t offset;
5258 5258 ssize_t length;
5259 5259
5260 5260 /*
5261 5261 * ufs_setattr clears AT_SIZE from vap->va_mask, but
5262 5262 * before returning, sarg.vap->va_mask is used to
5263 5263 * generate the setattr reply bitmap. We also clear
5264 5264 * AT_SIZE below before calling VOP_SPACE. For both
5265 5265 * of these cases, the va_mask needs to be saved here
5266 5266 * and restored after calling VOP_SETATTR.
5267 5267 */
5268 5268 saved_mask = sarg.vap->va_mask;
5269 5269
5270 5270 /*
5271 5271 * Check any possible conflict due to NBMAND locks.
5272 5272 * Get into critical region before VOP_GETATTR, so the
5273 5273 * size attribute is valid when checking conflicts.
5274 5274 */
5275 5275 if (nbl_need_check(vp)) {
5276 5276 nbl_start_crit(vp, RW_READER);
5277 5277 in_crit = 1;
5278 5278 }
5279 5279
5280 5280 bva.va_mask = AT_UID|AT_SIZE;
5281 5281 if (error = VOP_GETATTR(vp, &bva, 0, cr, &ct)) {
5282 5282 status = puterrno4(error);
5283 5283 goto done;
5284 5284 }
5285 5285
5286 5286 if (in_crit) {
5287 5287 if (sarg.vap->va_size < bva.va_size) {
5288 5288 offset = sarg.vap->va_size;
5289 5289 length = bva.va_size - sarg.vap->va_size;
5290 5290 } else {
5291 5291 offset = bva.va_size;
5292 5292 length = sarg.vap->va_size - bva.va_size;
5293 5293 }
5294 5294 if (nbl_conflict(vp, NBL_WRITE, offset, length, 0,
5295 5295 &ct)) {
5296 5296 status = NFS4ERR_LOCKED;
5297 5297 goto done;
5298 5298 }
5299 5299 }
5300 5300
5301 5301 if (crgetuid(cr) == bva.va_uid) {
5302 5302 sarg.vap->va_mask &= ~AT_SIZE;
5303 5303 bf.l_type = F_WRLCK;
5304 5304 bf.l_whence = 0;
5305 5305 bf.l_start = (off64_t)sarg.vap->va_size;
5306 5306 bf.l_len = 0;
5307 5307 bf.l_sysid = 0;
5308 5308 bf.l_pid = 0;
5309 5309 error = VOP_SPACE(vp, F_FREESP, &bf, FWRITE,
5310 5310 (offset_t)sarg.vap->va_size, cr, &ct);
5311 5311 }
5312 5312 }
5313 5313
5314 5314 if (!error && sarg.vap->va_mask != 0)
5315 5315 error = VOP_SETATTR(vp, sarg.vap, sarg.flag, cr, &ct);
5316 5316
5317 5317 /* restore va_mask -- ufs_setattr clears AT_SIZE */
5318 5318 if (saved_mask & AT_SIZE)
5319 5319 sarg.vap->va_mask |= AT_SIZE;
5320 5320
5321 5321 /*
5322 5322 * If an ACL was being set, it has been delayed until now,
5323 5323 * in order to set the mode (via the VOP_SETATTR() above) first.
5324 5324 */
5325 5325 if ((! error) && (fattrp->attrmask & FATTR4_ACL_MASK)) {
5326 5326 int i;
5327 5327
5328 5328 for (i = 0; i < NFS4_MAXNUM_ATTRS; i++)
5329 5329 if (ntov.amap[i] == FATTR4_ACL)
5330 5330 break;
5331 5331 if (i < NFS4_MAXNUM_ATTRS) {
5332 5332 error = (*nfs4_ntov_map[FATTR4_ACL].sv_getit)(
5333 5333 NFS4ATTR_SETIT, &sarg, &ntov.na[i]);
5334 5334 if (error == 0) {
5335 5335 *resp |= FATTR4_ACL_MASK;
5336 5336 } else if (error == ENOTSUP) {
5337 5337 (void) rfs4_verify_attr(&sarg, resp, &ntov);
5338 5338 status = NFS4ERR_ATTRNOTSUPP;
5339 5339 goto done;
5340 5340 }
5341 5341 } else {
5342 5342 NFS4_DEBUG(rfs4_debug,
5343 5343 (CE_NOTE, "do_rfs4_op_setattr: "
5344 5344 "unable to find ACL in fattr4"));
5345 5345 error = EINVAL;
5346 5346 }
5347 5347 }
5348 5348
5349 5349 if (error) {
5350 5350 /* check if a monitor detected a delegation conflict */
5351 5351 if (error == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK))
5352 5352 status = NFS4ERR_DELAY;
5353 5353 else
5354 5354 status = puterrno4(error);
5355 5355
5356 5356 /*
5357 5357 * Set the response bitmap when setattr failed.
5358 5358 * If VOP_SETATTR partially succeeded, test by doing a
5359 5359 * VOP_GETATTR on the object and comparing the data
5360 5360 * to the setattr arguments.
5361 5361 */
5362 5362 (void) rfs4_verify_attr(&sarg, resp, &ntov);
5363 5363 } else {
5364 5364 /*
5365 5365 * Force modified metadata out to stable storage.
5366 5366 */
5367 5367 (void) VOP_FSYNC(vp, FNODSYNC, cr, &ct);
5368 5368 /*
5369 5369 * Set response bitmap
5370 5370 */
5371 5371 nfs4_vmask_to_nmask_set(sarg.vap->va_mask, resp);
5372 5372 }
5373 5373
5374 5374 /* Return early and already have a NFSv4 error */
5375 5375 done:
5376 5376 /*
5377 5377 * Except for nfs4_vmask_to_nmask_set(), vattr --> fattr
5378 5378 * conversion sets both readable and writeable NFS4 attrs
5379 5379 * for AT_MTIME and AT_ATIME. The line below masks out
5380 5380 * unrequested attrs from the setattr result bitmap. This
5381 5381 * is placed after the done: label to catch the ATTRNOTSUP
5382 5382 * case.
5383 5383 */
5384 5384 *resp &= fattrp->attrmask;
5385 5385
5386 5386 if (in_crit)
5387 5387 nbl_end_crit(vp);
5388 5388
5389 5389 nfs4_ntov_table_free(&ntov, &sarg);
5390 5390
5391 5391 return (status);
5392 5392 }
5393 5393
5394 5394 /* ARGSUSED */
5395 5395 static void
5396 5396 rfs4_op_setattr(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
5397 5397 struct compound_state *cs)
5398 5398 {
5399 5399 SETATTR4args *args = &argop->nfs_argop4_u.opsetattr;
5400 5400 SETATTR4res *resp = &resop->nfs_resop4_u.opsetattr;
5401 5401 bslabel_t *clabel;
5402 5402
5403 5403 DTRACE_NFSV4_2(op__setattr__start, struct compound_state *, cs,
5404 5404 SETATTR4args *, args);
5405 5405
5406 5406 if (cs->vp == NULL) {
5407 5407 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
5408 5408 goto out;
5409 5409 }
5410 5410
5411 5411 /*
5412 5412 * If there is an unshared filesystem mounted on this vnode,
5413 5413 * do not allow to setattr on this vnode.
5414 5414 */
5415 5415 if (vn_ismntpt(cs->vp)) {
5416 5416 *cs->statusp = resp->status = NFS4ERR_ACCESS;
5417 5417 goto out;
5418 5418 }
5419 5419
5420 5420 resp->attrsset = 0;
5421 5421
5422 5422 if (rdonly4(req, cs)) {
5423 5423 *cs->statusp = resp->status = NFS4ERR_ROFS;
5424 5424 goto out;
5425 5425 }
5426 5426
5427 5427 /* check label before setting attributes */
5428 5428 if (is_system_labeled()) {
5429 5429 ASSERT(req->rq_label != NULL);
5430 5430 clabel = req->rq_label;
5431 5431 DTRACE_PROBE2(tx__rfs4__log__info__opsetattr__clabel, char *,
5432 5432 "got client label from request(1)",
5433 5433 struct svc_req *, req);
5434 5434 if (!blequal(&l_admin_low->tsl_label, clabel)) {
5435 5435 if (!do_rfs_label_check(clabel, cs->vp,
5436 5436 EQUALITY_CHECK, cs->exi)) {
5437 5437 *cs->statusp = resp->status = NFS4ERR_ACCESS;
5438 5438 goto out;
5439 5439 }
5440 5440 }
5441 5441 }
5442 5442
5443 5443 *cs->statusp = resp->status =
5444 5444 do_rfs4_op_setattr(&resp->attrsset, &args->obj_attributes, cs,
5445 5445 &args->stateid);
5446 5446
5447 5447 out:
5448 5448 DTRACE_NFSV4_2(op__setattr__done, struct compound_state *, cs,
5449 5449 SETATTR4res *, resp);
5450 5450 }
5451 5451
5452 5452 /* ARGSUSED */
5453 5453 static void
5454 5454 rfs4_op_verify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
5455 5455 struct compound_state *cs)
5456 5456 {
5457 5457 /*
5458 5458 * verify and nverify are exactly the same, except that nverify
5459 5459 * succeeds when some argument changed, and verify succeeds when
5460 5460 * when none changed.
5461 5461 */
5462 5462
5463 5463 VERIFY4args *args = &argop->nfs_argop4_u.opverify;
5464 5464 VERIFY4res *resp = &resop->nfs_resop4_u.opverify;
5465 5465
5466 5466 int error;
5467 5467 struct nfs4_svgetit_arg sarg;
5468 5468 struct statvfs64 sb;
5469 5469 struct nfs4_ntov_table ntov;
5470 5470
5471 5471 DTRACE_NFSV4_2(op__verify__start, struct compound_state *, cs,
5472 5472 VERIFY4args *, args);
5473 5473
5474 5474 if (cs->vp == NULL) {
5475 5475 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
5476 5476 goto out;
5477 5477 }
5478 5478
5479 5479 sarg.sbp = &sb;
5480 5480 sarg.is_referral = B_FALSE;
5481 5481 nfs4_ntov_table_init(&ntov);
5482 5482 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs,
5483 5483 &sarg, &ntov, NFS4ATTR_VERIT);
5484 5484 if (resp->status != NFS4_OK) {
5485 5485 /*
5486 5486 * do_rfs4_set_attrs will try to verify systemwide attrs,
5487 5487 * so could return -1 for "no match".
5488 5488 */
5489 5489 if (resp->status == -1)
5490 5490 resp->status = NFS4ERR_NOT_SAME;
5491 5491 goto done;
5492 5492 }
5493 5493 error = rfs4_verify_attr(&sarg, NULL, &ntov);
5494 5494 switch (error) {
5495 5495 case 0:
5496 5496 resp->status = NFS4_OK;
5497 5497 break;
5498 5498 case -1:
5499 5499 resp->status = NFS4ERR_NOT_SAME;
5500 5500 break;
5501 5501 default:
5502 5502 resp->status = puterrno4(error);
5503 5503 break;
5504 5504 }
5505 5505 done:
5506 5506 *cs->statusp = resp->status;
5507 5507 nfs4_ntov_table_free(&ntov, &sarg);
5508 5508 out:
5509 5509 DTRACE_NFSV4_2(op__verify__done, struct compound_state *, cs,
5510 5510 VERIFY4res *, resp);
5511 5511 }
5512 5512
5513 5513 /* ARGSUSED */
5514 5514 static void
5515 5515 rfs4_op_nverify(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
5516 5516 struct compound_state *cs)
5517 5517 {
5518 5518 /*
5519 5519 * verify and nverify are exactly the same, except that nverify
5520 5520 * succeeds when some argument changed, and verify succeeds when
5521 5521 * when none changed.
5522 5522 */
5523 5523
5524 5524 NVERIFY4args *args = &argop->nfs_argop4_u.opnverify;
5525 5525 NVERIFY4res *resp = &resop->nfs_resop4_u.opnverify;
5526 5526
5527 5527 int error;
5528 5528 struct nfs4_svgetit_arg sarg;
5529 5529 struct statvfs64 sb;
5530 5530 struct nfs4_ntov_table ntov;
5531 5531
5532 5532 DTRACE_NFSV4_2(op__nverify__start, struct compound_state *, cs,
5533 5533 NVERIFY4args *, args);
5534 5534
5535 5535 if (cs->vp == NULL) {
5536 5536 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
5537 5537 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs,
5538 5538 NVERIFY4res *, resp);
5539 5539 return;
5540 5540 }
5541 5541 sarg.sbp = &sb;
5542 5542 sarg.is_referral = B_FALSE;
5543 5543 nfs4_ntov_table_init(&ntov);
5544 5544 resp->status = do_rfs4_set_attrs(NULL, &args->obj_attributes, cs,
5545 5545 &sarg, &ntov, NFS4ATTR_VERIT);
5546 5546 if (resp->status != NFS4_OK) {
5547 5547 /*
5548 5548 * do_rfs4_set_attrs will try to verify systemwide attrs,
5549 5549 * so could return -1 for "no match".
5550 5550 */
5551 5551 if (resp->status == -1)
5552 5552 resp->status = NFS4_OK;
5553 5553 goto done;
5554 5554 }
5555 5555 error = rfs4_verify_attr(&sarg, NULL, &ntov);
5556 5556 switch (error) {
5557 5557 case 0:
5558 5558 resp->status = NFS4ERR_SAME;
5559 5559 break;
5560 5560 case -1:
5561 5561 resp->status = NFS4_OK;
5562 5562 break;
5563 5563 default:
5564 5564 resp->status = puterrno4(error);
5565 5565 break;
5566 5566 }
5567 5567 done:
5568 5568 *cs->statusp = resp->status;
5569 5569 nfs4_ntov_table_free(&ntov, &sarg);
5570 5570
5571 5571 DTRACE_NFSV4_2(op__nverify__done, struct compound_state *, cs,
5572 5572 NVERIFY4res *, resp);
5573 5573 }
5574 5574
5575 5575 /*
5576 5576 * XXX - This should live in an NFS header file.
5577 5577 */
5578 5578 #define MAX_IOVECS 12
5579 5579
5580 5580 /* ARGSUSED */
5581 5581 static void
5582 5582 rfs4_op_write(nfs_argop4 *argop, nfs_resop4 *resop, struct svc_req *req,
5583 5583 struct compound_state *cs)
5584 5584 {
5585 5585 WRITE4args *args = &argop->nfs_argop4_u.opwrite;
5586 5586 WRITE4res *resp = &resop->nfs_resop4_u.opwrite;
5587 5587 int error;
5588 5588 vnode_t *vp;
5589 5589 struct vattr bva;
5590 5590 u_offset_t rlimit;
5591 5591 struct uio uio;
5592 5592 struct iovec iov[MAX_IOVECS];
5593 5593 struct iovec *iovp;
5594 5594 int iovcnt;
5595 5595 int ioflag;
5596 5596 cred_t *savecred, *cr;
5597 5597 bool_t *deleg = &cs->deleg;
5598 5598 nfsstat4 stat;
5599 5599 int in_crit = 0;
5600 5600 caller_context_t ct;
5601 5601 nfs4_srv_t *nsrv4;
5602 5602
5603 5603 DTRACE_NFSV4_2(op__write__start, struct compound_state *, cs,
5604 5604 WRITE4args *, args);
5605 5605
5606 5606 vp = cs->vp;
5607 5607 if (vp == NULL) {
5608 5608 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
5609 5609 goto out;
5610 5610 }
5611 5611 if (cs->access == CS_ACCESS_DENIED) {
5612 5612 *cs->statusp = resp->status = NFS4ERR_ACCESS;
5613 5613 goto out;
5614 5614 }
5615 5615
5616 5616 cr = cs->cr;
5617 5617
5618 5618 if ((stat = rfs4_check_stateid(FWRITE, vp, &args->stateid, FALSE,
5619 5619 deleg, TRUE, &ct)) != NFS4_OK) {
5620 5620 *cs->statusp = resp->status = stat;
5621 5621 goto out;
5622 5622 }
5623 5623
5624 5624 /*
5625 5625 * We have to enter the critical region before calling VOP_RWLOCK
5626 5626 * to avoid a deadlock with ufs.
5627 5627 */
5628 5628 if (nbl_need_check(vp)) {
5629 5629 nbl_start_crit(vp, RW_READER);
5630 5630 in_crit = 1;
5631 5631 if (nbl_conflict(vp, NBL_WRITE,
5632 5632 args->offset, args->data_len, 0, &ct)) {
5633 5633 *cs->statusp = resp->status = NFS4ERR_LOCKED;
5634 5634 goto out;
5635 5635 }
5636 5636 }
5637 5637
5638 5638 bva.va_mask = AT_MODE | AT_UID;
5639 5639 error = VOP_GETATTR(vp, &bva, 0, cr, &ct);
5640 5640
5641 5641 /*
5642 5642 * If we can't get the attributes, then we can't do the
5643 5643 * right access checking. So, we'll fail the request.
5644 5644 */
5645 5645 if (error) {
5646 5646 *cs->statusp = resp->status = puterrno4(error);
5647 5647 goto out;
5648 5648 }
5649 5649
5650 5650 if (rdonly4(req, cs)) {
5651 5651 *cs->statusp = resp->status = NFS4ERR_ROFS;
5652 5652 goto out;
5653 5653 }
5654 5654
5655 5655 if (vp->v_type != VREG) {
5656 5656 *cs->statusp = resp->status =
5657 5657 ((vp->v_type == VDIR) ? NFS4ERR_ISDIR : NFS4ERR_INVAL);
5658 5658 goto out;
5659 5659 }
5660 5660
5661 5661 if (crgetuid(cr) != bva.va_uid &&
5662 5662 (error = VOP_ACCESS(vp, VWRITE, 0, cr, &ct))) {
5663 5663 *cs->statusp = resp->status = puterrno4(error);
5664 5664 goto out;
5665 5665 }
5666 5666
5667 5667 if (MANDLOCK(vp, bva.va_mode)) {
5668 5668 *cs->statusp = resp->status = NFS4ERR_ACCESS;
5669 5669 goto out;
5670 5670 }
5671 5671
5672 5672 nsrv4 = nfs4_get_srv();
5673 5673 if (args->data_len == 0) {
5674 5674 *cs->statusp = resp->status = NFS4_OK;
5675 5675 resp->count = 0;
5676 5676 resp->committed = args->stable;
5677 5677 resp->writeverf = nsrv4->write4verf;
5678 5678 goto out;
5679 5679 }
5680 5680
5681 5681 if (args->mblk != NULL) {
5682 5682 mblk_t *m;
5683 5683 uint_t bytes, round_len;
5684 5684
5685 5685 iovcnt = 0;
5686 5686 bytes = 0;
5687 5687 round_len = roundup(args->data_len, BYTES_PER_XDR_UNIT);
5688 5688 for (m = args->mblk;
5689 5689 m != NULL && bytes < round_len;
5690 5690 m = m->b_cont) {
5691 5691 iovcnt++;
5692 5692 bytes += MBLKL(m);
5693 5693 }
5694 5694 #ifdef DEBUG
5695 5695 /* should have ended on an mblk boundary */
5696 5696 if (bytes != round_len) {
5697 5697 printf("bytes=0x%x, round_len=0x%x, req len=0x%x\n",
5698 5698 bytes, round_len, args->data_len);
5699 5699 printf("args=%p, args->mblk=%p, m=%p", (void *)args,
5700 5700 (void *)args->mblk, (void *)m);
5701 5701 ASSERT(bytes == round_len);
5702 5702 }
5703 5703 #endif
5704 5704 if (iovcnt <= MAX_IOVECS) {
5705 5705 iovp = iov;
5706 5706 } else {
5707 5707 iovp = kmem_alloc(sizeof (*iovp) * iovcnt, KM_SLEEP);
5708 5708 }
5709 5709 mblk_to_iov(args->mblk, iovcnt, iovp);
5710 5710 } else if (args->rlist != NULL) {
5711 5711 iovcnt = 1;
5712 5712 iovp = iov;
5713 5713 iovp->iov_base = (char *)((args->rlist)->u.c_daddr3);
5714 5714 iovp->iov_len = args->data_len;
5715 5715 } else {
5716 5716 iovcnt = 1;
5717 5717 iovp = iov;
5718 5718 iovp->iov_base = args->data_val;
5719 5719 iovp->iov_len = args->data_len;
5720 5720 }
5721 5721
5722 5722 uio.uio_iov = iovp;
5723 5723 uio.uio_iovcnt = iovcnt;
5724 5724
5725 5725 uio.uio_segflg = UIO_SYSSPACE;
5726 5726 uio.uio_extflg = UIO_COPY_DEFAULT;
5727 5727 uio.uio_loffset = args->offset;
5728 5728 uio.uio_resid = args->data_len;
5729 5729 uio.uio_llimit = curproc->p_fsz_ctl;
5730 5730 rlimit = uio.uio_llimit - args->offset;
5731 5731 if (rlimit < (u_offset_t)uio.uio_resid)
5732 5732 uio.uio_resid = (int)rlimit;
5733 5733
5734 5734 if (args->stable == UNSTABLE4)
5735 5735 ioflag = 0;
5736 5736 else if (args->stable == FILE_SYNC4)
5737 5737 ioflag = FSYNC;
5738 5738 else if (args->stable == DATA_SYNC4)
5739 5739 ioflag = FDSYNC;
5740 5740 else {
5741 5741 if (iovp != iov)
5742 5742 kmem_free(iovp, sizeof (*iovp) * iovcnt);
5743 5743 *cs->statusp = resp->status = NFS4ERR_INVAL;
5744 5744 goto out;
5745 5745 }
5746 5746
5747 5747 /*
5748 5748 * We're changing creds because VM may fault and we need
5749 5749 * the cred of the current thread to be used if quota
5750 5750 * checking is enabled.
5751 5751 */
5752 5752 savecred = curthread->t_cred;
5753 5753 curthread->t_cred = cr;
5754 5754 error = do_io(FWRITE, vp, &uio, ioflag, cr, &ct);
5755 5755 curthread->t_cred = savecred;
5756 5756
5757 5757 if (iovp != iov)
5758 5758 kmem_free(iovp, sizeof (*iovp) * iovcnt);
5759 5759
5760 5760 if (error) {
5761 5761 *cs->statusp = resp->status = puterrno4(error);
5762 5762 goto out;
5763 5763 }
5764 5764
5765 5765 *cs->statusp = resp->status = NFS4_OK;
5766 5766 resp->count = args->data_len - uio.uio_resid;
5767 5767
5768 5768 if (ioflag == 0)
5769 5769 resp->committed = UNSTABLE4;
5770 5770 else
5771 5771 resp->committed = FILE_SYNC4;
5772 5772
5773 5773 resp->writeverf = nsrv4->write4verf;
5774 5774
5775 5775 out:
5776 5776 if (in_crit)
5777 5777 nbl_end_crit(vp);
5778 5778
5779 5779 DTRACE_NFSV4_2(op__write__done, struct compound_state *, cs,
5780 5780 WRITE4res *, resp);
5781 5781 }
5782 5782
5783 5783
5784 5784 /* XXX put in a header file */
5785 5785 extern int sec_svc_getcred(struct svc_req *, cred_t *, caddr_t *, int *);
5786 5786
5787 5787 void
5788 5788 rfs4_compound(COMPOUND4args *args, COMPOUND4res *resp, struct exportinfo *exi,
5789 5789 struct svc_req *req, cred_t *cr, int *rv)
5790 5790 {
5791 5791 uint_t i;
5792 5792 struct compound_state cs;
5793 5793 nfs4_srv_t *nsrv4;
5794 5794 nfs_export_t *ne = nfs_get_export();
5795 5795
5796 5796 if (rv != NULL)
5797 5797 *rv = 0;
5798 5798 rfs4_init_compound_state(&cs);
5799 5799 /*
5800 5800 * Form a reply tag by copying over the reqeuest tag.
5801 5801 */
5802 5802 resp->tag.utf8string_val =
5803 5803 kmem_alloc(args->tag.utf8string_len, KM_SLEEP);
5804 5804 resp->tag.utf8string_len = args->tag.utf8string_len;
5805 5805 bcopy(args->tag.utf8string_val, resp->tag.utf8string_val,
5806 5806 resp->tag.utf8string_len);
5807 5807
5808 5808 cs.statusp = &resp->status;
5809 5809 cs.req = req;
5810 5810 resp->array = NULL;
5811 5811 resp->array_len = 0;
5812 5812
5813 5813 /*
5814 5814 * XXX for now, minorversion should be zero
5815 5815 */
5816 5816 if (args->minorversion != NFS4_MINORVERSION) {
5817 5817 DTRACE_NFSV4_2(compound__start, struct compound_state *,
5818 5818 &cs, COMPOUND4args *, args);
5819 5819 resp->status = NFS4ERR_MINOR_VERS_MISMATCH;
5820 5820 DTRACE_NFSV4_2(compound__done, struct compound_state *,
5821 5821 &cs, COMPOUND4res *, resp);
5822 5822 return;
5823 5823 }
5824 5824
5825 5825 if (args->array_len == 0) {
5826 5826 resp->status = NFS4_OK;
5827 5827 return;
5828 5828 }
5829 5829
5830 5830 ASSERT(exi == NULL);
5831 5831 ASSERT(cr == NULL);
5832 5832
5833 5833 cr = crget();
5834 5834 ASSERT(cr != NULL);
5835 5835
5836 5836 if (sec_svc_getcred(req, cr, &cs.principal, &cs.nfsflavor) == 0) {
5837 5837 DTRACE_NFSV4_2(compound__start, struct compound_state *,
5838 5838 &cs, COMPOUND4args *, args);
5839 5839 crfree(cr);
5840 5840 DTRACE_NFSV4_2(compound__done, struct compound_state *,
5841 5841 &cs, COMPOUND4res *, resp);
5842 5842 svcerr_badcred(req->rq_xprt);
5843 5843 if (rv != NULL)
5844 5844 *rv = 1;
5845 5845 return;
5846 5846 }
5847 5847 resp->array_len = args->array_len;
5848 5848 resp->array = kmem_zalloc(args->array_len * sizeof (nfs_resop4),
5849 5849 KM_SLEEP);
5850 5850
5851 5851 cs.basecr = cr;
5852 5852 nsrv4 = nfs4_get_srv();
5853 5853
5854 5854 DTRACE_NFSV4_2(compound__start, struct compound_state *, &cs,
5855 5855 COMPOUND4args *, args);
5856 5856
5857 5857 /*
5858 5858 * For now, NFS4 compound processing must be protected by
5859 5859 * exported_lock because it can access more than one exportinfo
5860 5860 * per compound and share/unshare can now change multiple
5861 5861 * exinfo structs. The NFS2/3 code only refs 1 exportinfo
5862 5862 * per proc (excluding public exinfo), and exi_count design
5863 5863 * is sufficient to protect concurrent execution of NFS2/3
5864 5864 * ops along with unexport. This lock will be removed as
5865 5865 * part of the NFSv4 phase 2 namespace redesign work.
5866 5866 */
5867 5867 rw_enter(&ne->exported_lock, RW_READER);
5868 5868
5869 5869 /*
5870 5870 * If this is the first compound we've seen, we need to start all
5871 5871 * new instances' grace periods.
5872 5872 */
5873 5873 if (nsrv4->seen_first_compound == 0) {
5874 5874 rfs4_grace_start_new(nsrv4);
5875 5875 /*
5876 5876 * This must be set after rfs4_grace_start_new(), otherwise
5877 5877 * another thread could proceed past here before the former
5878 5878 * is finished.
5879 5879 */
5880 5880 nsrv4->seen_first_compound = 1;
5881 5881 }
5882 5882
5883 5883 for (i = 0; i < args->array_len && cs.cont; i++) {
5884 5884 nfs_argop4 *argop;
5885 5885 nfs_resop4 *resop;
5886 5886 uint_t op;
5887 5887
5888 5888 argop = &args->array[i];
5889 5889 resop = &resp->array[i];
5890 5890 resop->resop = argop->argop;
5891 5891 op = (uint_t)resop->resop;
5892 5892
5893 5893 if (op < rfsv4disp_cnt) {
5894 5894 /*
5895 5895 * Count the individual ops here; NULL and COMPOUND
5896 5896 * are counted in common_dispatch()
5897 5897 */
5898 5898 rfsproccnt_v4_ptr[op].value.ui64++;
5899 5899
5900 5900 NFS4_DEBUG(rfs4_debug > 1,
5901 5901 (CE_NOTE, "Executing %s", rfs4_op_string[op]));
5902 5902 (*rfsv4disptab[op].dis_proc)(argop, resop, req, &cs);
5903 5903 NFS4_DEBUG(rfs4_debug > 1, (CE_NOTE, "%s returned %d",
5904 5904 rfs4_op_string[op], *cs.statusp));
5905 5905 if (*cs.statusp != NFS4_OK)
5906 5906 cs.cont = FALSE;
5907 5907 } else {
5908 5908 /*
5909 5909 * This is effectively dead code since XDR code
5910 5910 * will have already returned BADXDR if op doesn't
5911 5911 * decode to legal value. This only done for a
5912 5912 * day when XDR code doesn't verify v4 opcodes.
5913 5913 */
5914 5914 op = OP_ILLEGAL;
5915 5915 rfsproccnt_v4_ptr[OP_ILLEGAL_IDX].value.ui64++;
5916 5916
5917 5917 rfs4_op_illegal(argop, resop, req, &cs);
5918 5918 cs.cont = FALSE;
5919 5919 }
5920 5920
5921 5921 /*
5922 5922 * If not at last op, and if we are to stop, then
5923 5923 * compact the results array.
5924 5924 */
5925 5925 if ((i + 1) < args->array_len && !cs.cont) {
5926 5926 nfs_resop4 *new_res = kmem_alloc(
5927 5927 (i+1) * sizeof (nfs_resop4), KM_SLEEP);
5928 5928 bcopy(resp->array,
5929 5929 new_res, (i+1) * sizeof (nfs_resop4));
5930 5930 kmem_free(resp->array,
5931 5931 args->array_len * sizeof (nfs_resop4));
5932 5932
5933 5933 resp->array_len = i + 1;
5934 5934 resp->array = new_res;
5935 5935 }
5936 5936 }
5937 5937
5938 5938 rw_exit(&ne->exported_lock);
5939 5939
5940 5940 /*
5941 5941 * clear exportinfo and vnode fields from compound_state before dtrace
5942 5942 * probe, to avoid tracing residual values for path and share path.
5943 5943 */
5944 5944 if (cs.vp)
5945 5945 VN_RELE(cs.vp);
5946 5946 if (cs.saved_vp)
5947 5947 VN_RELE(cs.saved_vp);
5948 5948 cs.exi = cs.saved_exi = NULL;
5949 5949 cs.vp = cs.saved_vp = NULL;
5950 5950
5951 5951 DTRACE_NFSV4_2(compound__done, struct compound_state *, &cs,
5952 5952 COMPOUND4res *, resp);
5953 5953
5954 5954 if (cs.saved_fh.nfs_fh4_val)
5955 5955 kmem_free(cs.saved_fh.nfs_fh4_val, NFS4_FHSIZE);
5956 5956
5957 5957 if (cs.basecr)
5958 5958 crfree(cs.basecr);
5959 5959 if (cs.cr)
5960 5960 crfree(cs.cr);
5961 5961 /*
5962 5962 * done with this compound request, free the label
5963 5963 */
5964 5964
5965 5965 if (req->rq_label != NULL) {
5966 5966 kmem_free(req->rq_label, sizeof (bslabel_t));
5967 5967 req->rq_label = NULL;
5968 5968 }
5969 5969 }
5970 5970
5971 5971 /*
5972 5972 * XXX because of what appears to be duplicate calls to rfs4_compound_free
5973 5973 * XXX zero out the tag and array values. Need to investigate why the
5974 5974 * XXX calls occur, but at least prevent the panic for now.
5975 5975 */
5976 5976 void
5977 5977 rfs4_compound_free(COMPOUND4res *resp)
5978 5978 {
5979 5979 uint_t i;
5980 5980
5981 5981 if (resp->tag.utf8string_val) {
5982 5982 UTF8STRING_FREE(resp->tag)
5983 5983 }
5984 5984
5985 5985 for (i = 0; i < resp->array_len; i++) {
5986 5986 nfs_resop4 *resop;
5987 5987 uint_t op;
5988 5988
5989 5989 resop = &resp->array[i];
5990 5990 op = (uint_t)resop->resop;
5991 5991 if (op < rfsv4disp_cnt) {
5992 5992 (*rfsv4disptab[op].dis_resfree)(resop);
5993 5993 }
5994 5994 }
5995 5995 if (resp->array != NULL) {
5996 5996 kmem_free(resp->array, resp->array_len * sizeof (nfs_resop4));
5997 5997 }
5998 5998 }
5999 5999
6000 6000 /*
6001 6001 * Process the value of the compound request rpc flags, as a bit-AND
6002 6002 * of the individual per-op flags (idempotent, allowork, publicfh_ok)
6003 6003 */
6004 6004 void
6005 6005 rfs4_compound_flagproc(COMPOUND4args *args, int *flagp)
6006 6006 {
6007 6007 int i;
6008 6008 int flag = RPC_ALL;
6009 6009
6010 6010 for (i = 0; flag && i < args->array_len; i++) {
6011 6011 uint_t op;
6012 6012
6013 6013 op = (uint_t)args->array[i].argop;
6014 6014
6015 6015 if (op < rfsv4disp_cnt)
6016 6016 flag &= rfsv4disptab[op].dis_flags;
6017 6017 else
6018 6018 flag = 0;
6019 6019 }
6020 6020 *flagp = flag;
6021 6021 }
6022 6022
6023 6023 nfsstat4
6024 6024 rfs4_client_sysid(rfs4_client_t *cp, sysid_t *sp)
6025 6025 {
6026 6026 nfsstat4 e;
6027 6027
6028 6028 rfs4_dbe_lock(cp->rc_dbe);
6029 6029
6030 6030 if (cp->rc_sysidt != LM_NOSYSID) {
6031 6031 *sp = cp->rc_sysidt;
6032 6032 e = NFS4_OK;
6033 6033
6034 6034 } else if ((cp->rc_sysidt = lm_alloc_sysidt()) != LM_NOSYSID) {
6035 6035 *sp = cp->rc_sysidt;
6036 6036 e = NFS4_OK;
6037 6037
6038 6038 NFS4_DEBUG(rfs4_debug, (CE_NOTE,
6039 6039 "rfs4_client_sysid: allocated 0x%x\n", *sp));
6040 6040 } else
6041 6041 e = NFS4ERR_DELAY;
6042 6042
6043 6043 rfs4_dbe_unlock(cp->rc_dbe);
6044 6044 return (e);
6045 6045 }
6046 6046
6047 6047 #if defined(DEBUG) && ! defined(lint)
6048 6048 static void lock_print(char *str, int operation, struct flock64 *flk)
6049 6049 {
6050 6050 char *op, *type;
6051 6051
6052 6052 switch (operation) {
6053 6053 case F_GETLK: op = "F_GETLK";
6054 6054 break;
6055 6055 case F_SETLK: op = "F_SETLK";
6056 6056 break;
6057 6057 case F_SETLK_NBMAND: op = "F_SETLK_NBMAND";
6058 6058 break;
6059 6059 default: op = "F_UNKNOWN";
6060 6060 break;
6061 6061 }
6062 6062 switch (flk->l_type) {
6063 6063 case F_UNLCK: type = "F_UNLCK";
6064 6064 break;
6065 6065 case F_RDLCK: type = "F_RDLCK";
6066 6066 break;
6067 6067 case F_WRLCK: type = "F_WRLCK";
6068 6068 break;
6069 6069 default: type = "F_UNKNOWN";
6070 6070 break;
6071 6071 }
6072 6072
6073 6073 ASSERT(flk->l_whence == 0);
6074 6074 cmn_err(CE_NOTE, "%s: %s, type = %s, off = %llx len = %llx pid = %d",
6075 6075 str, op, type, (longlong_t)flk->l_start,
6076 6076 flk->l_len ? (longlong_t)flk->l_len : ~0LL, flk->l_pid);
6077 6077 }
6078 6078
6079 6079 #define LOCK_PRINT(d, s, t, f) if (d) lock_print(s, t, f)
6080 6080 #else
6081 6081 #define LOCK_PRINT(d, s, t, f)
6082 6082 #endif
6083 6083
6084 6084 /*ARGSUSED*/
6085 6085 static bool_t
6086 6086 creds_ok(cred_set_t cr_set, struct svc_req *req, struct compound_state *cs)
6087 6087 {
6088 6088 return (TRUE);
6089 6089 }
6090 6090
6091 6091 /*
6092 6092 * Look up the pathname using the vp in cs as the directory vnode.
6093 6093 * cs->vp will be the vnode for the file on success
6094 6094 */
6095 6095
6096 6096 static nfsstat4
6097 6097 rfs4_lookup(component4 *component, struct svc_req *req,
6098 6098 struct compound_state *cs)
6099 6099 {
6100 6100 char *nm;
6101 6101 uint32_t len;
6102 6102 nfsstat4 status;
6103 6103 struct sockaddr *ca;
6104 6104 char *name;
6105 6105
6106 6106 if (cs->vp == NULL) {
6107 6107 return (NFS4ERR_NOFILEHANDLE);
6108 6108 }
6109 6109 if (cs->vp->v_type != VDIR) {
6110 6110 return (NFS4ERR_NOTDIR);
6111 6111 }
6112 6112
6113 6113 status = utf8_dir_verify(component);
6114 6114 if (status != NFS4_OK)
6115 6115 return (status);
6116 6116
6117 6117 nm = utf8_to_fn(component, &len, NULL);
6118 6118 if (nm == NULL) {
6119 6119 return (NFS4ERR_INVAL);
6120 6120 }
6121 6121
6122 6122 if (len > MAXNAMELEN) {
6123 6123 kmem_free(nm, len);
6124 6124 return (NFS4ERR_NAMETOOLONG);
6125 6125 }
6126 6126
6127 6127 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
6128 6128 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND,
6129 6129 MAXPATHLEN + 1);
6130 6130
6131 6131 if (name == NULL) {
6132 6132 kmem_free(nm, len);
6133 6133 return (NFS4ERR_INVAL);
6134 6134 }
6135 6135
6136 6136 status = do_rfs4_op_lookup(name, req, cs);
6137 6137
6138 6138 if (name != nm)
6139 6139 kmem_free(name, MAXPATHLEN + 1);
6140 6140
6141 6141 kmem_free(nm, len);
6142 6142
6143 6143 return (status);
6144 6144 }
6145 6145
6146 6146 static nfsstat4
6147 6147 rfs4_lookupfile(component4 *component, struct svc_req *req,
6148 6148 struct compound_state *cs, uint32_t access, change_info4 *cinfo)
6149 6149 {
6150 6150 nfsstat4 status;
6151 6151 vnode_t *dvp = cs->vp;
6152 6152 vattr_t bva, ava, fva;
6153 6153 int error;
6154 6154
6155 6155 /* Get "before" change value */
6156 6156 bva.va_mask = AT_CTIME|AT_SEQ;
6157 6157 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL);
6158 6158 if (error)
6159 6159 return (puterrno4(error));
6160 6160
6161 6161 /* rfs4_lookup may VN_RELE directory */
6162 6162 VN_HOLD(dvp);
6163 6163
6164 6164 status = rfs4_lookup(component, req, cs);
6165 6165 if (status != NFS4_OK) {
6166 6166 VN_RELE(dvp);
6167 6167 return (status);
6168 6168 }
6169 6169
6170 6170 /*
6171 6171 * Get "after" change value, if it fails, simply return the
6172 6172 * before value.
6173 6173 */
6174 6174 ava.va_mask = AT_CTIME|AT_SEQ;
6175 6175 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) {
6176 6176 ava.va_ctime = bva.va_ctime;
6177 6177 ava.va_seq = 0;
6178 6178 }
6179 6179 VN_RELE(dvp);
6180 6180
6181 6181 /*
6182 6182 * Validate the file is a file
6183 6183 */
6184 6184 fva.va_mask = AT_TYPE|AT_MODE;
6185 6185 error = VOP_GETATTR(cs->vp, &fva, 0, cs->cr, NULL);
6186 6186 if (error)
6187 6187 return (puterrno4(error));
6188 6188
6189 6189 if (fva.va_type != VREG) {
6190 6190 if (fva.va_type == VDIR)
6191 6191 return (NFS4ERR_ISDIR);
6192 6192 if (fva.va_type == VLNK)
6193 6193 return (NFS4ERR_SYMLINK);
6194 6194 return (NFS4ERR_INVAL);
6195 6195 }
6196 6196
6197 6197 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime);
6198 6198 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime);
6199 6199
6200 6200 /*
6201 6201 * It is undefined if VOP_LOOKUP will change va_seq, so
6202 6202 * cinfo.atomic = TRUE only if we have
6203 6203 * non-zero va_seq's, and they have not changed.
6204 6204 */
6205 6205 if (bva.va_seq && ava.va_seq && ava.va_seq == bva.va_seq)
6206 6206 cinfo->atomic = TRUE;
6207 6207 else
6208 6208 cinfo->atomic = FALSE;
6209 6209
6210 6210 /* Check for mandatory locking */
6211 6211 cs->mandlock = MANDLOCK(cs->vp, fva.va_mode);
6212 6212 return (check_open_access(access, cs, req));
6213 6213 }
6214 6214
6215 6215 static nfsstat4
6216 6216 create_vnode(vnode_t *dvp, char *nm, vattr_t *vap, createmode4 mode,
6217 6217 cred_t *cr, vnode_t **vpp, bool_t *created)
6218 6218 {
6219 6219 int error;
6220 6220 nfsstat4 status = NFS4_OK;
6221 6221 vattr_t va;
6222 6222
6223 6223 tryagain:
6224 6224
6225 6225 /*
6226 6226 * The file open mode used is VWRITE. If the client needs
6227 6227 * some other semantic, then it should do the access checking
6228 6228 * itself. It would have been nice to have the file open mode
6229 6229 * passed as part of the arguments.
6230 6230 */
6231 6231
6232 6232 *created = TRUE;
6233 6233 error = VOP_CREATE(dvp, nm, vap, EXCL, VWRITE, vpp, cr, 0, NULL, NULL);
6234 6234
6235 6235 if (error) {
6236 6236 *created = FALSE;
6237 6237
6238 6238 /*
6239 6239 * If we got something other than file already exists
6240 6240 * then just return this error. Otherwise, we got
6241 6241 * EEXIST. If we were doing a GUARDED create, then
6242 6242 * just return this error. Otherwise, we need to
6243 6243 * make sure that this wasn't a duplicate of an
6244 6244 * exclusive create request.
6245 6245 *
6246 6246 * The assumption is made that a non-exclusive create
6247 6247 * request will never return EEXIST.
6248 6248 */
6249 6249
6250 6250 if (error != EEXIST || mode == GUARDED4) {
6251 6251 status = puterrno4(error);
6252 6252 return (status);
6253 6253 }
6254 6254 error = VOP_LOOKUP(dvp, nm, vpp, NULL, 0, NULL, cr,
6255 6255 NULL, NULL, NULL);
6256 6256
6257 6257 if (error) {
6258 6258 /*
6259 6259 * We couldn't find the file that we thought that
6260 6260 * we just created. So, we'll just try creating
6261 6261 * it again.
6262 6262 */
6263 6263 if (error == ENOENT)
6264 6264 goto tryagain;
6265 6265
6266 6266 status = puterrno4(error);
6267 6267 return (status);
6268 6268 }
6269 6269
6270 6270 if (mode == UNCHECKED4) {
6271 6271 /* existing object must be regular file */
6272 6272 if ((*vpp)->v_type != VREG) {
6273 6273 if ((*vpp)->v_type == VDIR)
6274 6274 status = NFS4ERR_ISDIR;
6275 6275 else if ((*vpp)->v_type == VLNK)
6276 6276 status = NFS4ERR_SYMLINK;
6277 6277 else
6278 6278 status = NFS4ERR_INVAL;
6279 6279 VN_RELE(*vpp);
6280 6280 return (status);
6281 6281 }
6282 6282
6283 6283 return (NFS4_OK);
6284 6284 }
6285 6285
6286 6286 /* Check for duplicate request */
6287 6287 va.va_mask = AT_MTIME;
6288 6288 error = VOP_GETATTR(*vpp, &va, 0, cr, NULL);
6289 6289 if (!error) {
6290 6290 /* We found the file */
6291 6291 const timestruc_t *mtime = &vap->va_mtime;
6292 6292
6293 6293 if (va.va_mtime.tv_sec != mtime->tv_sec ||
6294 6294 va.va_mtime.tv_nsec != mtime->tv_nsec) {
6295 6295 /* but its not our creation */
6296 6296 VN_RELE(*vpp);
6297 6297 return (NFS4ERR_EXIST);
6298 6298 }
6299 6299 *created = TRUE; /* retrans of create == created */
6300 6300 return (NFS4_OK);
6301 6301 }
6302 6302 VN_RELE(*vpp);
6303 6303 return (NFS4ERR_EXIST);
6304 6304 }
6305 6305
6306 6306 return (NFS4_OK);
6307 6307 }
6308 6308
6309 6309 static nfsstat4
6310 6310 check_open_access(uint32_t access, struct compound_state *cs,
6311 6311 struct svc_req *req)
6312 6312 {
6313 6313 int error;
6314 6314 vnode_t *vp;
6315 6315 bool_t readonly;
6316 6316 cred_t *cr = cs->cr;
6317 6317
6318 6318 /* For now we don't allow mandatory locking as per V2/V3 */
6319 6319 if (cs->access == CS_ACCESS_DENIED || cs->mandlock) {
6320 6320 return (NFS4ERR_ACCESS);
6321 6321 }
6322 6322
6323 6323 vp = cs->vp;
6324 6324 ASSERT(cr != NULL && vp->v_type == VREG);
6325 6325
6326 6326 /*
6327 6327 * If the file system is exported read only and we are trying
6328 6328 * to open for write, then return NFS4ERR_ROFS
6329 6329 */
6330 6330
6331 6331 readonly = rdonly4(req, cs);
6332 6332
6333 6333 if ((access & OPEN4_SHARE_ACCESS_WRITE) && readonly)
6334 6334 return (NFS4ERR_ROFS);
6335 6335
6336 6336 if (access & OPEN4_SHARE_ACCESS_READ) {
6337 6337 if ((VOP_ACCESS(vp, VREAD, 0, cr, NULL) != 0) &&
6338 6338 (VOP_ACCESS(vp, VEXEC, 0, cr, NULL) != 0)) {
6339 6339 return (NFS4ERR_ACCESS);
6340 6340 }
6341 6341 }
6342 6342
6343 6343 if (access & OPEN4_SHARE_ACCESS_WRITE) {
6344 6344 error = VOP_ACCESS(vp, VWRITE, 0, cr, NULL);
6345 6345 if (error)
6346 6346 return (NFS4ERR_ACCESS);
6347 6347 }
6348 6348
6349 6349 return (NFS4_OK);
6350 6350 }
6351 6351
6352 6352 static nfsstat4
6353 6353 rfs4_createfile(OPEN4args *args, struct svc_req *req, struct compound_state *cs,
6354 6354 change_info4 *cinfo, bitmap4 *attrset, clientid4 clientid)
6355 6355 {
6356 6356 struct nfs4_svgetit_arg sarg;
6357 6357 struct nfs4_ntov_table ntov;
6358 6358
6359 6359 bool_t ntov_table_init = FALSE;
6360 6360 struct statvfs64 sb;
6361 6361 nfsstat4 status;
6362 6362 vnode_t *vp;
6363 6363 vattr_t bva, ava, iva, cva, *vap;
6364 6364 vnode_t *dvp;
6365 6365 timespec32_t *mtime;
6366 6366 char *nm = NULL;
6367 6367 uint_t buflen;
6368 6368 bool_t created;
6369 6369 bool_t setsize = FALSE;
6370 6370 len_t reqsize;
6371 6371 int error;
6372 6372 bool_t trunc;
6373 6373 caller_context_t ct;
6374 6374 component4 *component;
6375 6375 bslabel_t *clabel;
6376 6376 struct sockaddr *ca;
6377 6377 char *name = NULL;
6378 6378
6379 6379 sarg.sbp = &sb;
6380 6380 sarg.is_referral = B_FALSE;
6381 6381
6382 6382 dvp = cs->vp;
6383 6383
6384 6384 /* Check if the file system is read only */
6385 6385 if (rdonly4(req, cs))
6386 6386 return (NFS4ERR_ROFS);
6387 6387
6388 6388 /* check the label of including directory */
6389 6389 if (is_system_labeled()) {
6390 6390 ASSERT(req->rq_label != NULL);
6391 6391 clabel = req->rq_label;
6392 6392 DTRACE_PROBE2(tx__rfs4__log__info__opremove__clabel, char *,
6393 6393 "got client label from request(1)",
6394 6394 struct svc_req *, req);
6395 6395 if (!blequal(&l_admin_low->tsl_label, clabel)) {
6396 6396 if (!do_rfs_label_check(clabel, dvp, EQUALITY_CHECK,
6397 6397 cs->exi)) {
6398 6398 return (NFS4ERR_ACCESS);
6399 6399 }
6400 6400 }
6401 6401 }
6402 6402
6403 6403 /*
6404 6404 * Get the last component of path name in nm. cs will reference
6405 6405 * the including directory on success.
6406 6406 */
6407 6407 component = &args->open_claim4_u.file;
6408 6408 status = utf8_dir_verify(component);
6409 6409 if (status != NFS4_OK)
6410 6410 return (status);
6411 6411
6412 6412 nm = utf8_to_fn(component, &buflen, NULL);
6413 6413
6414 6414 if (nm == NULL)
6415 6415 return (NFS4ERR_RESOURCE);
6416 6416
6417 6417 if (buflen > MAXNAMELEN) {
6418 6418 kmem_free(nm, buflen);
6419 6419 return (NFS4ERR_NAMETOOLONG);
6420 6420 }
6421 6421
6422 6422 bva.va_mask = AT_TYPE|AT_CTIME|AT_SEQ;
6423 6423 error = VOP_GETATTR(dvp, &bva, 0, cs->cr, NULL);
6424 6424 if (error) {
6425 6425 kmem_free(nm, buflen);
6426 6426 return (puterrno4(error));
6427 6427 }
6428 6428
6429 6429 if (bva.va_type != VDIR) {
6430 6430 kmem_free(nm, buflen);
6431 6431 return (NFS4ERR_NOTDIR);
6432 6432 }
6433 6433
6434 6434 NFS4_SET_FATTR4_CHANGE(cinfo->before, bva.va_ctime)
6435 6435
6436 6436 switch (args->mode) {
6437 6437 case GUARDED4:
6438 6438 /*FALLTHROUGH*/
6439 6439 case UNCHECKED4:
6440 6440 nfs4_ntov_table_init(&ntov);
6441 6441 ntov_table_init = TRUE;
6442 6442
6443 6443 *attrset = 0;
6444 6444 status = do_rfs4_set_attrs(attrset,
6445 6445 &args->createhow4_u.createattrs,
6446 6446 cs, &sarg, &ntov, NFS4ATTR_SETIT);
6447 6447
6448 6448 if (status == NFS4_OK && (sarg.vap->va_mask & AT_TYPE) &&
6449 6449 sarg.vap->va_type != VREG) {
6450 6450 if (sarg.vap->va_type == VDIR)
6451 6451 status = NFS4ERR_ISDIR;
6452 6452 else if (sarg.vap->va_type == VLNK)
6453 6453 status = NFS4ERR_SYMLINK;
6454 6454 else
6455 6455 status = NFS4ERR_INVAL;
6456 6456 }
6457 6457
6458 6458 if (status != NFS4_OK) {
6459 6459 kmem_free(nm, buflen);
6460 6460 nfs4_ntov_table_free(&ntov, &sarg);
6461 6461 *attrset = 0;
6462 6462 return (status);
6463 6463 }
6464 6464
6465 6465 vap = sarg.vap;
6466 6466 vap->va_type = VREG;
6467 6467 vap->va_mask |= AT_TYPE;
6468 6468
6469 6469 if ((vap->va_mask & AT_MODE) == 0) {
6470 6470 vap->va_mask |= AT_MODE;
6471 6471 vap->va_mode = (mode_t)0600;
6472 6472 }
6473 6473
6474 6474 if (vap->va_mask & AT_SIZE) {
6475 6475
6476 6476 /* Disallow create with a non-zero size */
6477 6477
6478 6478 if ((reqsize = sarg.vap->va_size) != 0) {
6479 6479 kmem_free(nm, buflen);
6480 6480 nfs4_ntov_table_free(&ntov, &sarg);
6481 6481 *attrset = 0;
6482 6482 return (NFS4ERR_INVAL);
6483 6483 }
6484 6484 setsize = TRUE;
6485 6485 }
6486 6486 break;
6487 6487
6488 6488 case EXCLUSIVE4:
6489 6489 /* prohibit EXCL create of named attributes */
6490 6490 if (dvp->v_flag & V_XATTRDIR) {
6491 6491 kmem_free(nm, buflen);
6492 6492 *attrset = 0;
6493 6493 return (NFS4ERR_INVAL);
6494 6494 }
6495 6495
6496 6496 cva.va_mask = AT_TYPE | AT_MTIME | AT_MODE;
6497 6497 cva.va_type = VREG;
6498 6498 /*
6499 6499 * Ensure no time overflows. Assumes underlying
6500 6500 * filesystem supports at least 32 bits.
6501 6501 * Truncate nsec to usec resolution to allow valid
6502 6502 * compares even if the underlying filesystem truncates.
6503 6503 */
6504 6504 mtime = (timespec32_t *)&args->createhow4_u.createverf;
6505 6505 cva.va_mtime.tv_sec = mtime->tv_sec % TIME32_MAX;
6506 6506 cva.va_mtime.tv_nsec = (mtime->tv_nsec / 1000) * 1000;
6507 6507 cva.va_mode = (mode_t)0;
6508 6508 vap = &cva;
6509 6509
6510 6510 /*
6511 6511 * For EXCL create, attrset is set to the server attr
6512 6512 * used to cache the client's verifier.
6513 6513 */
6514 6514 *attrset = FATTR4_TIME_MODIFY_MASK;
6515 6515 break;
6516 6516 }
6517 6517
6518 6518 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
6519 6519 name = nfscmd_convname(ca, cs->exi, nm, NFSCMD_CONV_INBOUND,
6520 6520 MAXPATHLEN + 1);
6521 6521
6522 6522 if (name == NULL) {
6523 6523 kmem_free(nm, buflen);
6524 6524 return (NFS4ERR_SERVERFAULT);
6525 6525 }
6526 6526
6527 6527 status = create_vnode(dvp, name, vap, args->mode,
6528 6528 cs->cr, &vp, &created);
6529 6529 if (nm != name)
6530 6530 kmem_free(name, MAXPATHLEN + 1);
6531 6531 kmem_free(nm, buflen);
6532 6532
6533 6533 if (status != NFS4_OK) {
6534 6534 if (ntov_table_init)
6535 6535 nfs4_ntov_table_free(&ntov, &sarg);
6536 6536 *attrset = 0;
6537 6537 return (status);
6538 6538 }
6539 6539
6540 6540 trunc = (setsize && !created);
6541 6541
6542 6542 if (args->mode != EXCLUSIVE4) {
6543 6543 bitmap4 createmask = args->createhow4_u.createattrs.attrmask;
6544 6544
6545 6545 /*
6546 6546 * True verification that object was created with correct
6547 6547 * attrs is impossible. The attrs could have been changed
6548 6548 * immediately after object creation. If attributes did
6549 6549 * not verify, the only recourse for the server is to
6550 6550 * destroy the object. Maybe if some attrs (like gid)
6551 6551 * are set incorrectly, the object should be destroyed;
6552 6552 * however, seems bad as a default policy. Do we really
6553 6553 * want to destroy an object over one of the times not
6554 6554 * verifying correctly? For these reasons, the server
6555 6555 * currently sets bits in attrset for createattrs
6556 6556 * that were set; however, no verification is done.
6557 6557 *
6558 6558 * vmask_to_nmask accounts for vattr bits set on create
6559 6559 * [do_rfs4_set_attrs() only sets resp bits for
6560 6560 * non-vattr/vfs bits.]
6561 6561 * Mask off any bits we set by default so as not to return
6562 6562 * more attrset bits than were requested in createattrs
6563 6563 */
6564 6564 if (created) {
6565 6565 nfs4_vmask_to_nmask(sarg.vap->va_mask, attrset);
6566 6566 *attrset &= createmask;
6567 6567 } else {
6568 6568 /*
6569 6569 * We did not create the vnode (we tried but it
6570 6570 * already existed). In this case, the only createattr
6571 6571 * that the spec allows the server to set is size,
6572 6572 * and even then, it can only be set if it is 0.
6573 6573 */
6574 6574 *attrset = 0;
6575 6575 if (trunc)
6576 6576 *attrset = FATTR4_SIZE_MASK;
6577 6577 }
6578 6578 }
6579 6579 if (ntov_table_init)
6580 6580 nfs4_ntov_table_free(&ntov, &sarg);
6581 6581
6582 6582 /*
6583 6583 * Get the initial "after" sequence number, if it fails,
6584 6584 * set to zero, time to before.
6585 6585 */
6586 6586 iva.va_mask = AT_CTIME|AT_SEQ;
6587 6587 if (VOP_GETATTR(dvp, &iva, 0, cs->cr, NULL)) {
6588 6588 iva.va_seq = 0;
6589 6589 iva.va_ctime = bva.va_ctime;
6590 6590 }
6591 6591
6592 6592 /*
6593 6593 * create_vnode attempts to create the file exclusive,
6594 6594 * if it already exists the VOP_CREATE will fail and
6595 6595 * may not increase va_seq. It is atomic if
6596 6596 * we haven't changed the directory, but if it has changed
6597 6597 * we don't know what changed it.
6598 6598 */
6599 6599 if (!created) {
6600 6600 if (bva.va_seq && iva.va_seq &&
6601 6601 bva.va_seq == iva.va_seq)
6602 6602 cinfo->atomic = TRUE;
6603 6603 else
6604 6604 cinfo->atomic = FALSE;
6605 6605 NFS4_SET_FATTR4_CHANGE(cinfo->after, iva.va_ctime);
6606 6606 } else {
6607 6607 /*
6608 6608 * The entry was created, we need to sync the
6609 6609 * directory metadata.
6610 6610 */
6611 6611 (void) VOP_FSYNC(dvp, 0, cs->cr, NULL);
6612 6612
6613 6613 /*
6614 6614 * Get "after" change value, if it fails, simply return the
6615 6615 * before value.
6616 6616 */
6617 6617 ava.va_mask = AT_CTIME|AT_SEQ;
6618 6618 if (VOP_GETATTR(dvp, &ava, 0, cs->cr, NULL)) {
6619 6619 ava.va_ctime = bva.va_ctime;
6620 6620 ava.va_seq = 0;
6621 6621 }
6622 6622
6623 6623 NFS4_SET_FATTR4_CHANGE(cinfo->after, ava.va_ctime);
6624 6624
6625 6625 /*
6626 6626 * The cinfo->atomic = TRUE only if we have
6627 6627 * non-zero va_seq's, and it has incremented by exactly one
6628 6628 * during the create_vnode and it didn't
6629 6629 * change during the VOP_FSYNC.
6630 6630 */
6631 6631 if (bva.va_seq && iva.va_seq && ava.va_seq &&
6632 6632 iva.va_seq == (bva.va_seq + 1) && iva.va_seq == ava.va_seq)
6633 6633 cinfo->atomic = TRUE;
6634 6634 else
6635 6635 cinfo->atomic = FALSE;
6636 6636 }
6637 6637
6638 6638 /* Check for mandatory locking and that the size gets set. */
6639 6639 cva.va_mask = AT_MODE;
6640 6640 if (setsize)
6641 6641 cva.va_mask |= AT_SIZE;
6642 6642
6643 6643 /* Assume the worst */
6644 6644 cs->mandlock = TRUE;
6645 6645
6646 6646 if (VOP_GETATTR(vp, &cva, 0, cs->cr, NULL) == 0) {
6647 6647 cs->mandlock = MANDLOCK(cs->vp, cva.va_mode);
6648 6648
6649 6649 /*
6650 6650 * Truncate the file if necessary; this would be
6651 6651 * the case for create over an existing file.
6652 6652 */
6653 6653
6654 6654 if (trunc) {
6655 6655 int in_crit = 0;
6656 6656 rfs4_file_t *fp;
6657 6657 nfs4_srv_t *nsrv4;
6658 6658 bool_t create = FALSE;
6659 6659
6660 6660 /*
6661 6661 * We are writing over an existing file.
6662 6662 * Check to see if we need to recall a delegation.
6663 6663 */
6664 6664 nsrv4 = nfs4_get_srv();
6665 6665 rfs4_hold_deleg_policy(nsrv4);
6666 6666 if ((fp = rfs4_findfile(vp, NULL, &create)) != NULL) {
6667 6667 if (rfs4_check_delegated_byfp(FWRITE, fp,
6668 6668 (reqsize == 0), FALSE, FALSE, &clientid)) {
6669 6669 rfs4_file_rele(fp);
6670 6670 rfs4_rele_deleg_policy(nsrv4);
6671 6671 VN_RELE(vp);
6672 6672 *attrset = 0;
6673 6673 return (NFS4ERR_DELAY);
6674 6674 }
6675 6675 rfs4_file_rele(fp);
6676 6676 }
6677 6677 rfs4_rele_deleg_policy(nsrv4);
6678 6678
6679 6679 if (nbl_need_check(vp)) {
6680 6680 in_crit = 1;
6681 6681
6682 6682 ASSERT(reqsize == 0);
6683 6683
6684 6684 nbl_start_crit(vp, RW_READER);
6685 6685 if (nbl_conflict(vp, NBL_WRITE, 0,
6686 6686 cva.va_size, 0, NULL)) {
6687 6687 in_crit = 0;
6688 6688 nbl_end_crit(vp);
6689 6689 VN_RELE(vp);
6690 6690 *attrset = 0;
6691 6691 return (NFS4ERR_ACCESS);
6692 6692 }
6693 6693 }
6694 6694 ct.cc_sysid = 0;
6695 6695 ct.cc_pid = 0;
6696 6696 ct.cc_caller_id = nfs4_srv_caller_id;
6697 6697 ct.cc_flags = CC_DONTBLOCK;
6698 6698
6699 6699 cva.va_mask = AT_SIZE;
6700 6700 cva.va_size = reqsize;
6701 6701 (void) VOP_SETATTR(vp, &cva, 0, cs->cr, &ct);
6702 6702 if (in_crit)
6703 6703 nbl_end_crit(vp);
6704 6704 }
6705 6705 }
6706 6706
6707 6707 error = makefh4(&cs->fh, vp, cs->exi);
6708 6708
6709 6709 /*
6710 6710 * Force modified data and metadata out to stable storage.
6711 6711 */
6712 6712 (void) VOP_FSYNC(vp, FNODSYNC, cs->cr, NULL);
6713 6713
6714 6714 if (error) {
6715 6715 VN_RELE(vp);
6716 6716 *attrset = 0;
6717 6717 return (puterrno4(error));
6718 6718 }
6719 6719
6720 6720 /* if parent dir is attrdir, set namedattr fh flag */
6721 6721 if (dvp->v_flag & V_XATTRDIR)
6722 6722 set_fh4_flag(&cs->fh, FH4_NAMEDATTR);
6723 6723
6724 6724 if (cs->vp)
6725 6725 VN_RELE(cs->vp);
6726 6726
6727 6727 cs->vp = vp;
6728 6728
6729 6729 /*
6730 6730 * if we did not create the file, we will need to check
6731 6731 * the access bits on the file
6732 6732 */
6733 6733
6734 6734 if (!created) {
6735 6735 if (setsize)
6736 6736 args->share_access |= OPEN4_SHARE_ACCESS_WRITE;
6737 6737 status = check_open_access(args->share_access, cs, req);
6738 6738 if (status != NFS4_OK)
6739 6739 *attrset = 0;
6740 6740 }
6741 6741 return (status);
6742 6742 }
6743 6743
6744 6744 /*ARGSUSED*/
6745 6745 static void
6746 6746 rfs4_do_open(struct compound_state *cs, struct svc_req *req,
6747 6747 rfs4_openowner_t *oo, delegreq_t deleg,
6748 6748 uint32_t access, uint32_t deny,
6749 6749 OPEN4res *resp, int deleg_cur)
6750 6750 {
6751 6751 /* XXX Currently not using req */
6752 6752 rfs4_state_t *sp;
6753 6753 rfs4_file_t *fp;
6754 6754 bool_t screate = TRUE;
6755 6755 bool_t fcreate = TRUE;
6756 6756 uint32_t open_a, share_a;
6757 6757 uint32_t open_d, share_d;
6758 6758 rfs4_deleg_state_t *dsp;
6759 6759 sysid_t sysid;
6760 6760 nfsstat4 status;
6761 6761 caller_context_t ct;
6762 6762 int fflags = 0;
6763 6763 int recall = 0;
6764 6764 int err;
6765 6765 int first_open;
6766 6766
6767 6767 /* get the file struct and hold a lock on it during initial open */
6768 6768 fp = rfs4_findfile_withlock(cs->vp, &cs->fh, &fcreate);
6769 6769 if (fp == NULL) {
6770 6770 resp->status = NFS4ERR_RESOURCE;
6771 6771 DTRACE_PROBE1(nfss__e__do__open1, nfsstat4, resp->status);
6772 6772 return;
6773 6773 }
6774 6774
6775 6775 sp = rfs4_findstate_by_owner_file(oo, fp, &screate);
6776 6776 if (sp == NULL) {
6777 6777 resp->status = NFS4ERR_RESOURCE;
6778 6778 DTRACE_PROBE1(nfss__e__do__open2, nfsstat4, resp->status);
6779 6779 /* No need to keep any reference */
6780 6780 rw_exit(&fp->rf_file_rwlock);
6781 6781 rfs4_file_rele(fp);
6782 6782 return;
6783 6783 }
6784 6784
6785 6785 /* try to get the sysid before continuing */
6786 6786 if ((status = rfs4_client_sysid(oo->ro_client, &sysid)) != NFS4_OK) {
6787 6787 resp->status = status;
6788 6788 rfs4_file_rele(fp);
6789 6789 /* Not a fully formed open; "close" it */
6790 6790 if (screate == TRUE)
6791 6791 rfs4_state_close(sp, FALSE, FALSE, cs->cr);
6792 6792 rfs4_state_rele(sp);
6793 6793 return;
6794 6794 }
6795 6795
6796 6796 /* Calculate the fflags for this OPEN. */
6797 6797 if (access & OPEN4_SHARE_ACCESS_READ)
6798 6798 fflags |= FREAD;
6799 6799 if (access & OPEN4_SHARE_ACCESS_WRITE)
6800 6800 fflags |= FWRITE;
6801 6801
6802 6802 rfs4_dbe_lock(sp->rs_dbe);
6803 6803
6804 6804 /*
6805 6805 * Calculate the new deny and access mode that this open is adding to
6806 6806 * the file for this open owner;
6807 6807 */
6808 6808 open_d = (deny & ~sp->rs_open_deny);
6809 6809 open_a = (access & ~sp->rs_open_access);
6810 6810
6811 6811 /*
6812 6812 * Calculate the new share access and share deny modes that this open
6813 6813 * is adding to the file for this open owner;
6814 6814 */
6815 6815 share_a = (access & ~sp->rs_share_access);
6816 6816 share_d = (deny & ~sp->rs_share_deny);
6817 6817
6818 6818 first_open = (sp->rs_open_access & OPEN4_SHARE_ACCESS_BOTH) == 0;
6819 6819
6820 6820 /*
6821 6821 * Check to see the client has already sent an open for this
6822 6822 * open owner on this file with the same share/deny modes.
6823 6823 * If so, we don't need to check for a conflict and we don't
6824 6824 * need to add another shrlock. If not, then we need to
6825 6825 * check for conflicts in deny and access before checking for
6826 6826 * conflicts in delegation. We don't want to recall a
6827 6827 * delegation based on an open that will eventually fail based
6828 6828 * on shares modes.
6829 6829 */
6830 6830
6831 6831 if (share_a || share_d) {
6832 6832 if ((err = rfs4_share(sp, access, deny)) != 0) {
6833 6833 rfs4_dbe_unlock(sp->rs_dbe);
6834 6834 resp->status = err;
6835 6835
6836 6836 rfs4_file_rele(fp);
6837 6837 /* Not a fully formed open; "close" it */
6838 6838 if (screate == TRUE)
6839 6839 rfs4_state_close(sp, FALSE, FALSE, cs->cr);
6840 6840 rfs4_state_rele(sp);
6841 6841 return;
6842 6842 }
6843 6843 }
6844 6844
6845 6845 rfs4_dbe_lock(fp->rf_dbe);
6846 6846
6847 6847 /*
6848 6848 * Check to see if this file is delegated and if so, if a
6849 6849 * recall needs to be done.
6850 6850 */
6851 6851 if (rfs4_check_recall(sp, access)) {
6852 6852 rfs4_dbe_unlock(fp->rf_dbe);
6853 6853 rfs4_dbe_unlock(sp->rs_dbe);
6854 6854 rfs4_recall_deleg(fp, FALSE, sp->rs_owner->ro_client);
6855 6855 delay(NFS4_DELEGATION_CONFLICT_DELAY);
6856 6856 rfs4_dbe_lock(sp->rs_dbe);
6857 6857
6858 6858 /* if state closed while lock was dropped */
6859 6859 if (sp->rs_closed) {
6860 6860 if (share_a || share_d)
6861 6861 (void) rfs4_unshare(sp);
6862 6862 rfs4_dbe_unlock(sp->rs_dbe);
6863 6863 rfs4_file_rele(fp);
6864 6864 /* Not a fully formed open; "close" it */
6865 6865 if (screate == TRUE)
6866 6866 rfs4_state_close(sp, FALSE, FALSE, cs->cr);
6867 6867 rfs4_state_rele(sp);
6868 6868 resp->status = NFS4ERR_OLD_STATEID;
6869 6869 return;
6870 6870 }
6871 6871
6872 6872 rfs4_dbe_lock(fp->rf_dbe);
6873 6873 /* Let's see if the delegation was returned */
6874 6874 if (rfs4_check_recall(sp, access)) {
6875 6875 rfs4_dbe_unlock(fp->rf_dbe);
6876 6876 if (share_a || share_d)
6877 6877 (void) rfs4_unshare(sp);
6878 6878 rfs4_dbe_unlock(sp->rs_dbe);
6879 6879 rfs4_file_rele(fp);
6880 6880 rfs4_update_lease(sp->rs_owner->ro_client);
6881 6881
6882 6882 /* Not a fully formed open; "close" it */
6883 6883 if (screate == TRUE)
6884 6884 rfs4_state_close(sp, FALSE, FALSE, cs->cr);
6885 6885 rfs4_state_rele(sp);
6886 6886 resp->status = NFS4ERR_DELAY;
6887 6887 return;
6888 6888 }
6889 6889 }
6890 6890 /*
6891 6891 * the share check passed and any delegation conflict has been
6892 6892 * taken care of, now call vop_open.
6893 6893 * if this is the first open then call vop_open with fflags.
6894 6894 * if not, call vn_open_upgrade with just the upgrade flags.
6895 6895 *
6896 6896 * if the file has been opened already, it will have the current
6897 6897 * access mode in the state struct. if it has no share access, then
6898 6898 * this is a new open.
6899 6899 *
6900 6900 * However, if this is open with CLAIM_DLEGATE_CUR, then don't
6901 6901 * call VOP_OPEN(), just do the open upgrade.
6902 6902 */
6903 6903 if (first_open && !deleg_cur) {
6904 6904 ct.cc_sysid = sysid;
6905 6905 ct.cc_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe);
6906 6906 ct.cc_caller_id = nfs4_srv_caller_id;
6907 6907 ct.cc_flags = CC_DONTBLOCK;
6908 6908 err = VOP_OPEN(&cs->vp, fflags, cs->cr, &ct);
6909 6909 if (err) {
6910 6910 rfs4_dbe_unlock(fp->rf_dbe);
6911 6911 if (share_a || share_d)
6912 6912 (void) rfs4_unshare(sp);
6913 6913 rfs4_dbe_unlock(sp->rs_dbe);
6914 6914 rfs4_file_rele(fp);
6915 6915
6916 6916 /* Not a fully formed open; "close" it */
6917 6917 if (screate == TRUE)
6918 6918 rfs4_state_close(sp, FALSE, FALSE, cs->cr);
6919 6919 rfs4_state_rele(sp);
6920 6920 /* check if a monitor detected a delegation conflict */
6921 6921 if (err == EAGAIN && (ct.cc_flags & CC_WOULDBLOCK))
6922 6922 resp->status = NFS4ERR_DELAY;
6923 6923 else
6924 6924 resp->status = NFS4ERR_SERVERFAULT;
6925 6925 return;
6926 6926 }
6927 6927 } else { /* open upgrade */
6928 6928 /*
6929 6929 * calculate the fflags for the new mode that is being added
6930 6930 * by this upgrade.
6931 6931 */
6932 6932 fflags = 0;
6933 6933 if (open_a & OPEN4_SHARE_ACCESS_READ)
6934 6934 fflags |= FREAD;
6935 6935 if (open_a & OPEN4_SHARE_ACCESS_WRITE)
6936 6936 fflags |= FWRITE;
6937 6937 vn_open_upgrade(cs->vp, fflags);
6938 6938 }
6939 6939 sp->rs_open_access |= access;
6940 6940 sp->rs_open_deny |= deny;
6941 6941
6942 6942 if (open_d & OPEN4_SHARE_DENY_READ)
6943 6943 fp->rf_deny_read++;
6944 6944 if (open_d & OPEN4_SHARE_DENY_WRITE)
6945 6945 fp->rf_deny_write++;
6946 6946 fp->rf_share_deny |= deny;
6947 6947
6948 6948 if (open_a & OPEN4_SHARE_ACCESS_READ)
6949 6949 fp->rf_access_read++;
6950 6950 if (open_a & OPEN4_SHARE_ACCESS_WRITE)
6951 6951 fp->rf_access_write++;
6952 6952 fp->rf_share_access |= access;
6953 6953
6954 6954 /*
6955 6955 * Check for delegation here. if the deleg argument is not
6956 6956 * DELEG_ANY, then this is a reclaim from a client and
6957 6957 * we must honor the delegation requested. If necessary we can
6958 6958 * set the recall flag.
6959 6959 */
6960 6960
6961 6961 dsp = rfs4_grant_delegation(deleg, sp, &recall);
6962 6962
6963 6963 cs->deleg = (fp->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE);
6964 6964
6965 6965 next_stateid(&sp->rs_stateid);
6966 6966
6967 6967 resp->stateid = sp->rs_stateid.stateid;
6968 6968
6969 6969 rfs4_dbe_unlock(fp->rf_dbe);
6970 6970 rfs4_dbe_unlock(sp->rs_dbe);
6971 6971
6972 6972 if (dsp) {
6973 6973 rfs4_set_deleg_response(dsp, &resp->delegation, NULL, recall);
6974 6974 rfs4_deleg_state_rele(dsp);
6975 6975 }
6976 6976
6977 6977 rfs4_file_rele(fp);
6978 6978 rfs4_state_rele(sp);
6979 6979
6980 6980 resp->status = NFS4_OK;
6981 6981 }
6982 6982
6983 6983 /*ARGSUSED*/
6984 6984 static void
6985 6985 rfs4_do_opennull(struct compound_state *cs, struct svc_req *req,
6986 6986 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp)
6987 6987 {
6988 6988 change_info4 *cinfo = &resp->cinfo;
6989 6989 bitmap4 *attrset = &resp->attrset;
6990 6990
6991 6991 if (args->opentype == OPEN4_NOCREATE)
6992 6992 resp->status = rfs4_lookupfile(&args->open_claim4_u.file,
6993 6993 req, cs, args->share_access, cinfo);
6994 6994 else {
6995 6995 /* inhibit delegation grants during exclusive create */
6996 6996
6997 6997 if (args->mode == EXCLUSIVE4)
6998 6998 rfs4_disable_delegation();
6999 6999
7000 7000 resp->status = rfs4_createfile(args, req, cs, cinfo, attrset,
7001 7001 oo->ro_client->rc_clientid);
7002 7002 }
7003 7003
7004 7004 if (resp->status == NFS4_OK) {
7005 7005
7006 7006 /* cs->vp cs->fh now reference the desired file */
7007 7007
7008 7008 rfs4_do_open(cs, req, oo,
7009 7009 oo->ro_need_confirm ? DELEG_NONE : DELEG_ANY,
7010 7010 args->share_access, args->share_deny, resp, 0);
7011 7011
7012 7012 /*
7013 7013 * If rfs4_createfile set attrset, we must
7014 7014 * clear this attrset before the response is copied.
7015 7015 */
7016 7016 if (resp->status != NFS4_OK && resp->attrset) {
7017 7017 resp->attrset = 0;
7018 7018 }
7019 7019 }
7020 7020 else
7021 7021 *cs->statusp = resp->status;
7022 7022
7023 7023 if (args->mode == EXCLUSIVE4)
7024 7024 rfs4_enable_delegation();
7025 7025 }
7026 7026
7027 7027 /*ARGSUSED*/
7028 7028 static void
7029 7029 rfs4_do_openprev(struct compound_state *cs, struct svc_req *req,
7030 7030 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp)
7031 7031 {
7032 7032 change_info4 *cinfo = &resp->cinfo;
7033 7033 vattr_t va;
7034 7034 vtype_t v_type = cs->vp->v_type;
7035 7035 int error = 0;
7036 7036
7037 7037 /* Verify that we have a regular file */
7038 7038 if (v_type != VREG) {
7039 7039 if (v_type == VDIR)
7040 7040 resp->status = NFS4ERR_ISDIR;
7041 7041 else if (v_type == VLNK)
7042 7042 resp->status = NFS4ERR_SYMLINK;
7043 7043 else
7044 7044 resp->status = NFS4ERR_INVAL;
7045 7045 return;
7046 7046 }
7047 7047
7048 7048 va.va_mask = AT_MODE|AT_UID;
7049 7049 error = VOP_GETATTR(cs->vp, &va, 0, cs->cr, NULL);
7050 7050 if (error) {
7051 7051 resp->status = puterrno4(error);
7052 7052 return;
7053 7053 }
7054 7054
7055 7055 cs->mandlock = MANDLOCK(cs->vp, va.va_mode);
7056 7056
7057 7057 /*
7058 7058 * Check if we have access to the file, Note the the file
7059 7059 * could have originally been open UNCHECKED or GUARDED
7060 7060 * with mode bits that will now fail, but there is nothing
7061 7061 * we can really do about that except in the case that the
7062 7062 * owner of the file is the one requesting the open.
7063 7063 */
7064 7064 if (crgetuid(cs->cr) != va.va_uid) {
7065 7065 resp->status = check_open_access(args->share_access, cs, req);
7066 7066 if (resp->status != NFS4_OK) {
7067 7067 return;
7068 7068 }
7069 7069 }
7070 7070
7071 7071 /*
7072 7072 * cinfo on a CLAIM_PREVIOUS is undefined, initialize to zero
7073 7073 */
7074 7074 cinfo->before = 0;
7075 7075 cinfo->after = 0;
7076 7076 cinfo->atomic = FALSE;
7077 7077
7078 7078 rfs4_do_open(cs, req, oo,
7079 7079 NFS4_DELEG4TYPE2REQTYPE(args->open_claim4_u.delegate_type),
7080 7080 args->share_access, args->share_deny, resp, 0);
7081 7081 }
7082 7082
7083 7083 static void
7084 7084 rfs4_do_opendelcur(struct compound_state *cs, struct svc_req *req,
7085 7085 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp)
7086 7086 {
7087 7087 int error;
7088 7088 nfsstat4 status;
7089 7089 stateid4 stateid =
7090 7090 args->open_claim4_u.delegate_cur_info.delegate_stateid;
7091 7091 rfs4_deleg_state_t *dsp;
7092 7092
7093 7093 /*
7094 7094 * Find the state info from the stateid and confirm that the
7095 7095 * file is delegated. If the state openowner is the same as
7096 7096 * the supplied openowner we're done. If not, get the file
7097 7097 * info from the found state info. Use that file info to
7098 7098 * create the state for this lock owner. Note solaris doen't
7099 7099 * really need the pathname to find the file. We may want to
7100 7100 * lookup the pathname and make sure that the vp exist and
7101 7101 * matches the vp in the file structure. However it is
7102 7102 * possible that the pathname nolonger exists (local process
7103 7103 * unlinks the file), so this may not be that useful.
7104 7104 */
7105 7105
7106 7106 status = rfs4_get_deleg_state(&stateid, &dsp);
7107 7107 if (status != NFS4_OK) {
7108 7108 resp->status = status;
7109 7109 return;
7110 7110 }
7111 7111
7112 7112 ASSERT(dsp->rds_finfo->rf_dinfo.rd_dtype != OPEN_DELEGATE_NONE);
7113 7113
7114 7114 /*
7115 7115 * New lock owner, create state. Since this was probably called
7116 7116 * in response to a CB_RECALL we set deleg to DELEG_NONE
7117 7117 */
7118 7118
7119 7119 ASSERT(cs->vp != NULL);
7120 7120 VN_RELE(cs->vp);
7121 7121 VN_HOLD(dsp->rds_finfo->rf_vp);
7122 7122 cs->vp = dsp->rds_finfo->rf_vp;
7123 7123
7124 7124 if (error = makefh4(&cs->fh, cs->vp, cs->exi)) {
7125 7125 rfs4_deleg_state_rele(dsp);
7126 7126 *cs->statusp = resp->status = puterrno4(error);
7127 7127 return;
7128 7128 }
7129 7129
7130 7130 /* Mark progress for delegation returns */
7131 7131 dsp->rds_finfo->rf_dinfo.rd_time_lastwrite = gethrestime_sec();
7132 7132 rfs4_deleg_state_rele(dsp);
7133 7133 rfs4_do_open(cs, req, oo, DELEG_NONE,
7134 7134 args->share_access, args->share_deny, resp, 1);
7135 7135 }
7136 7136
7137 7137 /*ARGSUSED*/
7138 7138 static void
7139 7139 rfs4_do_opendelprev(struct compound_state *cs, struct svc_req *req,
7140 7140 OPEN4args *args, rfs4_openowner_t *oo, OPEN4res *resp)
7141 7141 {
7142 7142 /*
7143 7143 * Lookup the pathname, it must already exist since this file
7144 7144 * was delegated.
7145 7145 *
7146 7146 * Find the file and state info for this vp and open owner pair.
7147 7147 * check that they are in fact delegated.
7148 7148 * check that the state access and deny modes are the same.
7149 7149 *
7150 7150 * Return the delgation possibly seting the recall flag.
7151 7151 */
7152 7152 rfs4_file_t *fp;
7153 7153 rfs4_state_t *sp;
7154 7154 bool_t create = FALSE;
7155 7155 bool_t dcreate = FALSE;
7156 7156 rfs4_deleg_state_t *dsp;
7157 7157 nfsace4 *ace;
7158 7158
7159 7159 /* Note we ignore oflags */
7160 7160 resp->status = rfs4_lookupfile(&args->open_claim4_u.file_delegate_prev,
7161 7161 req, cs, args->share_access, &resp->cinfo);
7162 7162
7163 7163 if (resp->status != NFS4_OK) {
7164 7164 return;
7165 7165 }
7166 7166
7167 7167 /* get the file struct and hold a lock on it during initial open */
7168 7168 fp = rfs4_findfile_withlock(cs->vp, NULL, &create);
7169 7169 if (fp == NULL) {
7170 7170 resp->status = NFS4ERR_RESOURCE;
7171 7171 DTRACE_PROBE1(nfss__e__do_opendelprev1, nfsstat4, resp->status);
7172 7172 return;
7173 7173 }
7174 7174
7175 7175 sp = rfs4_findstate_by_owner_file(oo, fp, &create);
7176 7176 if (sp == NULL) {
7177 7177 resp->status = NFS4ERR_SERVERFAULT;
7178 7178 DTRACE_PROBE1(nfss__e__do_opendelprev2, nfsstat4, resp->status);
7179 7179 rw_exit(&fp->rf_file_rwlock);
7180 7180 rfs4_file_rele(fp);
7181 7181 return;
7182 7182 }
7183 7183
7184 7184 rfs4_dbe_lock(sp->rs_dbe);
7185 7185 rfs4_dbe_lock(fp->rf_dbe);
7186 7186 if (args->share_access != sp->rs_share_access ||
7187 7187 args->share_deny != sp->rs_share_deny ||
7188 7188 sp->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_NONE) {
7189 7189 NFS4_DEBUG(rfs4_debug,
7190 7190 (CE_NOTE, "rfs4_do_opendelprev: state mixup"));
7191 7191 rfs4_dbe_unlock(fp->rf_dbe);
7192 7192 rfs4_dbe_unlock(sp->rs_dbe);
7193 7193 rfs4_file_rele(fp);
7194 7194 rfs4_state_rele(sp);
7195 7195 resp->status = NFS4ERR_SERVERFAULT;
7196 7196 return;
7197 7197 }
7198 7198 rfs4_dbe_unlock(fp->rf_dbe);
7199 7199 rfs4_dbe_unlock(sp->rs_dbe);
7200 7200
7201 7201 dsp = rfs4_finddeleg(sp, &dcreate);
7202 7202 if (dsp == NULL) {
7203 7203 rfs4_state_rele(sp);
7204 7204 rfs4_file_rele(fp);
7205 7205 resp->status = NFS4ERR_SERVERFAULT;
7206 7206 return;
7207 7207 }
7208 7208
7209 7209 next_stateid(&sp->rs_stateid);
7210 7210
7211 7211 resp->stateid = sp->rs_stateid.stateid;
7212 7212
7213 7213 resp->delegation.delegation_type = dsp->rds_dtype;
7214 7214
7215 7215 if (dsp->rds_dtype == OPEN_DELEGATE_READ) {
7216 7216 open_read_delegation4 *rv =
7217 7217 &resp->delegation.open_delegation4_u.read;
7218 7218
7219 7219 rv->stateid = dsp->rds_delegid.stateid;
7220 7220 rv->recall = FALSE; /* no policy in place to set to TRUE */
7221 7221 ace = &rv->permissions;
7222 7222 } else {
7223 7223 open_write_delegation4 *rv =
7224 7224 &resp->delegation.open_delegation4_u.write;
7225 7225
7226 7226 rv->stateid = dsp->rds_delegid.stateid;
7227 7227 rv->recall = FALSE; /* no policy in place to set to TRUE */
7228 7228 ace = &rv->permissions;
7229 7229 rv->space_limit.limitby = NFS_LIMIT_SIZE;
7230 7230 rv->space_limit.nfs_space_limit4_u.filesize = UINT64_MAX;
7231 7231 }
7232 7232
7233 7233 /* XXX For now */
7234 7234 ace->type = ACE4_ACCESS_ALLOWED_ACE_TYPE;
7235 7235 ace->flag = 0;
7236 7236 ace->access_mask = 0;
7237 7237 ace->who.utf8string_len = 0;
7238 7238 ace->who.utf8string_val = 0;
7239 7239
7240 7240 rfs4_deleg_state_rele(dsp);
7241 7241 rfs4_state_rele(sp);
7242 7242 rfs4_file_rele(fp);
7243 7243 }
7244 7244
7245 7245 typedef enum {
7246 7246 NFS4_CHKSEQ_OKAY = 0,
7247 7247 NFS4_CHKSEQ_REPLAY = 1,
7248 7248 NFS4_CHKSEQ_BAD = 2
7249 7249 } rfs4_chkseq_t;
7250 7250
7251 7251 /*
7252 7252 * Generic function for sequence number checks.
7253 7253 */
7254 7254 static rfs4_chkseq_t
7255 7255 rfs4_check_seqid(seqid4 seqid, nfs_resop4 *lastop,
7256 7256 seqid4 rqst_seq, nfs_resop4 *resop, bool_t copyres)
7257 7257 {
7258 7258 /* Same sequence ids and matching operations? */
7259 7259 if (seqid == rqst_seq && resop->resop == lastop->resop) {
7260 7260 if (copyres == TRUE) {
7261 7261 rfs4_free_reply(resop);
7262 7262 rfs4_copy_reply(resop, lastop);
7263 7263 }
7264 7264 NFS4_DEBUG(rfs4_debug, (CE_NOTE,
7265 7265 "Replayed SEQID %d\n", seqid));
7266 7266 return (NFS4_CHKSEQ_REPLAY);
7267 7267 }
7268 7268
7269 7269 /* If the incoming sequence is not the next expected then it is bad */
7270 7270 if (rqst_seq != seqid + 1) {
7271 7271 if (rqst_seq == seqid) {
7272 7272 NFS4_DEBUG(rfs4_debug,
7273 7273 (CE_NOTE, "BAD SEQID: Replayed sequence id "
7274 7274 "but last op was %d current op is %d\n",
7275 7275 lastop->resop, resop->resop));
7276 7276 return (NFS4_CHKSEQ_BAD);
7277 7277 }
7278 7278 NFS4_DEBUG(rfs4_debug,
7279 7279 (CE_NOTE, "BAD SEQID: got %u expecting %u\n",
7280 7280 rqst_seq, seqid));
7281 7281 return (NFS4_CHKSEQ_BAD);
7282 7282 }
7283 7283
7284 7284 /* Everything okay -- next expected */
7285 7285 return (NFS4_CHKSEQ_OKAY);
7286 7286 }
7287 7287
7288 7288
7289 7289 static rfs4_chkseq_t
7290 7290 rfs4_check_open_seqid(seqid4 seqid, rfs4_openowner_t *op, nfs_resop4 *resop)
7291 7291 {
7292 7292 rfs4_chkseq_t rc;
7293 7293
7294 7294 rfs4_dbe_lock(op->ro_dbe);
7295 7295 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply, seqid, resop,
7296 7296 TRUE);
7297 7297 rfs4_dbe_unlock(op->ro_dbe);
7298 7298
7299 7299 if (rc == NFS4_CHKSEQ_OKAY)
7300 7300 rfs4_update_lease(op->ro_client);
7301 7301
7302 7302 return (rc);
7303 7303 }
7304 7304
7305 7305 static rfs4_chkseq_t
7306 7306 rfs4_check_olo_seqid(seqid4 olo_seqid, rfs4_openowner_t *op, nfs_resop4 *resop)
7307 7307 {
7308 7308 rfs4_chkseq_t rc;
7309 7309
7310 7310 rfs4_dbe_lock(op->ro_dbe);
7311 7311 rc = rfs4_check_seqid(op->ro_open_seqid, &op->ro_reply,
7312 7312 olo_seqid, resop, FALSE);
7313 7313 rfs4_dbe_unlock(op->ro_dbe);
7314 7314
7315 7315 return (rc);
7316 7316 }
7317 7317
7318 7318 static rfs4_chkseq_t
7319 7319 rfs4_check_lock_seqid(seqid4 seqid, rfs4_lo_state_t *lsp, nfs_resop4 *resop)
7320 7320 {
7321 7321 rfs4_chkseq_t rc = NFS4_CHKSEQ_OKAY;
7322 7322
7323 7323 rfs4_dbe_lock(lsp->rls_dbe);
7324 7324 if (!lsp->rls_skip_seqid_check)
7325 7325 rc = rfs4_check_seqid(lsp->rls_seqid, &lsp->rls_reply, seqid,
7326 7326 resop, TRUE);
7327 7327 rfs4_dbe_unlock(lsp->rls_dbe);
7328 7328
7329 7329 return (rc);
7330 7330 }
7331 7331
7332 7332 static void
7333 7333 rfs4_op_open(nfs_argop4 *argop, nfs_resop4 *resop,
7334 7334 struct svc_req *req, struct compound_state *cs)
7335 7335 {
7336 7336 OPEN4args *args = &argop->nfs_argop4_u.opopen;
7337 7337 OPEN4res *resp = &resop->nfs_resop4_u.opopen;
7338 7338 open_owner4 *owner = &args->owner;
7339 7339 open_claim_type4 claim = args->claim;
7340 7340 rfs4_client_t *cp;
7341 7341 rfs4_openowner_t *oo;
7342 7342 bool_t create;
7343 7343 bool_t replay = FALSE;
7344 7344 int can_reclaim;
7345 7345
7346 7346 DTRACE_NFSV4_2(op__open__start, struct compound_state *, cs,
7347 7347 OPEN4args *, args);
7348 7348
7349 7349 if (cs->vp == NULL) {
7350 7350 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
7351 7351 goto end;
7352 7352 }
7353 7353
7354 7354 /*
7355 7355 * Need to check clientid and lease expiration first based on
7356 7356 * error ordering and incrementing sequence id.
7357 7357 */
7358 7358 cp = rfs4_findclient_by_id(owner->clientid, FALSE);
7359 7359 if (cp == NULL) {
7360 7360 *cs->statusp = resp->status =
7361 7361 rfs4_check_clientid(&owner->clientid, 0);
7362 7362 goto end;
7363 7363 }
7364 7364
7365 7365 if (rfs4_lease_expired(cp)) {
7366 7366 rfs4_client_close(cp);
7367 7367 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
7368 7368 goto end;
7369 7369 }
7370 7370 can_reclaim = cp->rc_can_reclaim;
7371 7371
7372 7372 /*
7373 7373 * Find the open_owner for use from this point forward. Take
7374 7374 * care in updating the sequence id based on the type of error
7375 7375 * being returned.
7376 7376 */
7377 7377 retry:
7378 7378 create = TRUE;
7379 7379 oo = rfs4_findopenowner(owner, &create, args->seqid);
7380 7380 if (oo == NULL) {
7381 7381 *cs->statusp = resp->status = NFS4ERR_RESOURCE;
7382 7382 rfs4_client_rele(cp);
7383 7383 goto end;
7384 7384 }
7385 7385
7386 7386 /* Hold off access to the sequence space while the open is done */
7387 7387 rfs4_sw_enter(&oo->ro_sw);
7388 7388
7389 7389 /*
7390 7390 * If the open_owner existed before at the server, then check
7391 7391 * the sequence id.
7392 7392 */
7393 7393 if (!create && !oo->ro_postpone_confirm) {
7394 7394 switch (rfs4_check_open_seqid(args->seqid, oo, resop)) {
7395 7395 case NFS4_CHKSEQ_BAD:
7396 7396 if ((args->seqid > oo->ro_open_seqid) &&
7397 7397 oo->ro_need_confirm) {
7398 7398 rfs4_free_opens(oo, TRUE, FALSE);
7399 7399 rfs4_sw_exit(&oo->ro_sw);
7400 7400 rfs4_openowner_rele(oo);
7401 7401 goto retry;
7402 7402 }
7403 7403 resp->status = NFS4ERR_BAD_SEQID;
7404 7404 goto out;
7405 7405 case NFS4_CHKSEQ_REPLAY: /* replay of previous request */
7406 7406 replay = TRUE;
7407 7407 goto out;
7408 7408 default:
7409 7409 break;
7410 7410 }
7411 7411
7412 7412 /*
7413 7413 * Sequence was ok and open owner exists
7414 7414 * check to see if we have yet to see an
7415 7415 * open_confirm.
7416 7416 */
7417 7417 if (oo->ro_need_confirm) {
7418 7418 rfs4_free_opens(oo, TRUE, FALSE);
7419 7419 rfs4_sw_exit(&oo->ro_sw);
7420 7420 rfs4_openowner_rele(oo);
7421 7421 goto retry;
7422 7422 }
7423 7423 }
7424 7424 /* Grace only applies to regular-type OPENs */
7425 7425 if (rfs4_clnt_in_grace(cp) &&
7426 7426 (claim == CLAIM_NULL || claim == CLAIM_DELEGATE_CUR)) {
7427 7427 *cs->statusp = resp->status = NFS4ERR_GRACE;
7428 7428 goto out;
7429 7429 }
7430 7430
7431 7431 /*
7432 7432 * If previous state at the server existed then can_reclaim
7433 7433 * will be set. If not reply NFS4ERR_NO_GRACE to the
7434 7434 * client.
7435 7435 */
7436 7436 if (rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS && !can_reclaim) {
7437 7437 *cs->statusp = resp->status = NFS4ERR_NO_GRACE;
7438 7438 goto out;
7439 7439 }
7440 7440
7441 7441
7442 7442 /*
7443 7443 * Reject the open if the client has missed the grace period
7444 7444 */
7445 7445 if (!rfs4_clnt_in_grace(cp) && claim == CLAIM_PREVIOUS) {
7446 7446 *cs->statusp = resp->status = NFS4ERR_NO_GRACE;
7447 7447 goto out;
7448 7448 }
7449 7449
7450 7450 /* Couple of up-front bookkeeping items */
7451 7451 if (oo->ro_need_confirm) {
7452 7452 /*
7453 7453 * If this is a reclaim OPEN then we should not ask
7454 7454 * for a confirmation of the open_owner per the
7455 7455 * protocol specification.
7456 7456 */
7457 7457 if (claim == CLAIM_PREVIOUS)
7458 7458 oo->ro_need_confirm = FALSE;
7459 7459 else
7460 7460 resp->rflags |= OPEN4_RESULT_CONFIRM;
7461 7461 }
7462 7462 resp->rflags |= OPEN4_RESULT_LOCKTYPE_POSIX;
7463 7463
7464 7464 /*
7465 7465 * If there is an unshared filesystem mounted on this vnode,
7466 7466 * do not allow to open/create in this directory.
7467 7467 */
7468 7468 if (vn_ismntpt(cs->vp)) {
7469 7469 *cs->statusp = resp->status = NFS4ERR_ACCESS;
7470 7470 goto out;
7471 7471 }
7472 7472
7473 7473 /*
7474 7474 * access must READ, WRITE, or BOTH. No access is invalid.
7475 7475 * deny can be READ, WRITE, BOTH, or NONE.
7476 7476 * bits not defined for access/deny are invalid.
7477 7477 */
7478 7478 if (! (args->share_access & OPEN4_SHARE_ACCESS_BOTH) ||
7479 7479 (args->share_access & ~OPEN4_SHARE_ACCESS_BOTH) ||
7480 7480 (args->share_deny & ~OPEN4_SHARE_DENY_BOTH)) {
7481 7481 *cs->statusp = resp->status = NFS4ERR_INVAL;
7482 7482 goto out;
7483 7483 }
7484 7484
7485 7485
7486 7486 /*
7487 7487 * make sure attrset is zero before response is built.
7488 7488 */
7489 7489 resp->attrset = 0;
7490 7490
7491 7491 switch (claim) {
7492 7492 case CLAIM_NULL:
7493 7493 rfs4_do_opennull(cs, req, args, oo, resp);
7494 7494 break;
7495 7495 case CLAIM_PREVIOUS:
7496 7496 rfs4_do_openprev(cs, req, args, oo, resp);
7497 7497 break;
7498 7498 case CLAIM_DELEGATE_CUR:
7499 7499 rfs4_do_opendelcur(cs, req, args, oo, resp);
7500 7500 break;
7501 7501 case CLAIM_DELEGATE_PREV:
7502 7502 rfs4_do_opendelprev(cs, req, args, oo, resp);
7503 7503 break;
7504 7504 default:
7505 7505 resp->status = NFS4ERR_INVAL;
7506 7506 break;
7507 7507 }
7508 7508
7509 7509 out:
7510 7510 rfs4_client_rele(cp);
7511 7511
7512 7512 /* Catch sequence id handling here to make it a little easier */
7513 7513 switch (resp->status) {
7514 7514 case NFS4ERR_BADXDR:
7515 7515 case NFS4ERR_BAD_SEQID:
7516 7516 case NFS4ERR_BAD_STATEID:
7517 7517 case NFS4ERR_NOFILEHANDLE:
7518 7518 case NFS4ERR_RESOURCE:
7519 7519 case NFS4ERR_STALE_CLIENTID:
7520 7520 case NFS4ERR_STALE_STATEID:
7521 7521 /*
7522 7522 * The protocol states that if any of these errors are
7523 7523 * being returned, the sequence id should not be
7524 7524 * incremented. Any other return requires an
7525 7525 * increment.
7526 7526 */
7527 7527 break;
7528 7528 default:
7529 7529 /* Always update the lease in this case */
7530 7530 rfs4_update_lease(oo->ro_client);
7531 7531
7532 7532 /* Regular response - copy the result */
7533 7533 if (!replay)
7534 7534 rfs4_update_open_resp(oo, resop, &cs->fh);
7535 7535
7536 7536 /*
7537 7537 * REPLAY case: Only if the previous response was OK
7538 7538 * do we copy the filehandle. If not OK, no
7539 7539 * filehandle to copy.
7540 7540 */
7541 7541 if (replay == TRUE &&
7542 7542 resp->status == NFS4_OK &&
7543 7543 oo->ro_reply_fh.nfs_fh4_val) {
7544 7544 /*
7545 7545 * If this is a replay, we must restore the
7546 7546 * current filehandle/vp to that of what was
7547 7547 * returned originally. Try our best to do
7548 7548 * it.
7549 7549 */
7550 7550 nfs_fh4_fmt_t *fh_fmtp =
7551 7551 (nfs_fh4_fmt_t *)oo->ro_reply_fh.nfs_fh4_val;
7552 7552
7553 7553 cs->exi = checkexport4(&fh_fmtp->fh4_fsid,
7554 7554 (fid_t *)&fh_fmtp->fh4_xlen, NULL);
7555 7555
7556 7556 if (cs->exi == NULL) {
7557 7557 resp->status = NFS4ERR_STALE;
7558 7558 goto finish;
7559 7559 }
7560 7560
7561 7561 VN_RELE(cs->vp);
7562 7562
7563 7563 cs->vp = nfs4_fhtovp(&oo->ro_reply_fh, cs->exi,
7564 7564 &resp->status);
7565 7565
7566 7566 if (cs->vp == NULL)
7567 7567 goto finish;
7568 7568
7569 7569 nfs_fh4_copy(&oo->ro_reply_fh, &cs->fh);
7570 7570 }
7571 7571
7572 7572 /*
7573 7573 * If this was a replay, no need to update the
7574 7574 * sequence id. If the open_owner was not created on
7575 7575 * this pass, then update. The first use of an
7576 7576 * open_owner will not bump the sequence id.
7577 7577 */
7578 7578 if (replay == FALSE && !create)
7579 7579 rfs4_update_open_sequence(oo);
7580 7580 /*
7581 7581 * If the client is receiving an error and the
7582 7582 * open_owner needs to be confirmed, there is no way
7583 7583 * to notify the client of this fact ignoring the fact
7584 7584 * that the server has no method of returning a
7585 7585 * stateid to confirm. Therefore, the server needs to
7586 7586 * mark this open_owner in a way as to avoid the
7587 7587 * sequence id checking the next time the client uses
7588 7588 * this open_owner.
7589 7589 */
7590 7590 if (resp->status != NFS4_OK && oo->ro_need_confirm)
7591 7591 oo->ro_postpone_confirm = TRUE;
7592 7592 /*
7593 7593 * If OK response then clear the postpone flag and
7594 7594 * reset the sequence id to keep in sync with the
7595 7595 * client.
7596 7596 */
7597 7597 if (resp->status == NFS4_OK && oo->ro_postpone_confirm) {
7598 7598 oo->ro_postpone_confirm = FALSE;
7599 7599 oo->ro_open_seqid = args->seqid;
7600 7600 }
7601 7601 break;
7602 7602 }
7603 7603
7604 7604 finish:
7605 7605 *cs->statusp = resp->status;
7606 7606
7607 7607 rfs4_sw_exit(&oo->ro_sw);
7608 7608 rfs4_openowner_rele(oo);
7609 7609
7610 7610 end:
7611 7611 DTRACE_NFSV4_2(op__open__done, struct compound_state *, cs,
7612 7612 OPEN4res *, resp);
7613 7613 }
7614 7614
7615 7615 /*ARGSUSED*/
7616 7616 void
7617 7617 rfs4_op_open_confirm(nfs_argop4 *argop, nfs_resop4 *resop,
7618 7618 struct svc_req *req, struct compound_state *cs)
7619 7619 {
7620 7620 OPEN_CONFIRM4args *args = &argop->nfs_argop4_u.opopen_confirm;
7621 7621 OPEN_CONFIRM4res *resp = &resop->nfs_resop4_u.opopen_confirm;
7622 7622 rfs4_state_t *sp;
7623 7623 nfsstat4 status;
7624 7624
7625 7625 DTRACE_NFSV4_2(op__open__confirm__start, struct compound_state *, cs,
7626 7626 OPEN_CONFIRM4args *, args);
7627 7627
7628 7628 if (cs->vp == NULL) {
7629 7629 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
7630 7630 goto out;
7631 7631 }
7632 7632
7633 7633 if (cs->vp->v_type != VREG) {
7634 7634 *cs->statusp = resp->status =
7635 7635 cs->vp->v_type == VDIR ? NFS4ERR_ISDIR : NFS4ERR_INVAL;
7636 7636 return;
7637 7637 }
7638 7638
7639 7639 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID);
7640 7640 if (status != NFS4_OK) {
7641 7641 *cs->statusp = resp->status = status;
7642 7642 goto out;
7643 7643 }
7644 7644
7645 7645 /* Ensure specified filehandle matches */
7646 7646 if (cs->vp != sp->rs_finfo->rf_vp) {
7647 7647 rfs4_state_rele(sp);
7648 7648 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
7649 7649 goto out;
7650 7650 }
7651 7651
7652 7652 /* hold off other access to open_owner while we tinker */
7653 7653 rfs4_sw_enter(&sp->rs_owner->ro_sw);
7654 7654
7655 7655 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) {
7656 7656 case NFS4_CHECK_STATEID_OKAY:
7657 7657 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner,
7658 7658 resop) != 0) {
7659 7659 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
7660 7660 break;
7661 7661 }
7662 7662 /*
7663 7663 * If it is the appropriate stateid and determined to
7664 7664 * be "OKAY" then this means that the stateid does not
7665 7665 * need to be confirmed and the client is in error for
7666 7666 * sending an OPEN_CONFIRM.
7667 7667 */
7668 7668 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
7669 7669 break;
7670 7670 case NFS4_CHECK_STATEID_OLD:
7671 7671 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
7672 7672 break;
7673 7673 case NFS4_CHECK_STATEID_BAD:
7674 7674 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
7675 7675 break;
7676 7676 case NFS4_CHECK_STATEID_EXPIRED:
7677 7677 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
7678 7678 break;
7679 7679 case NFS4_CHECK_STATEID_CLOSED:
7680 7680 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
7681 7681 break;
7682 7682 case NFS4_CHECK_STATEID_REPLAY:
7683 7683 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner,
7684 7684 resop)) {
7685 7685 case NFS4_CHKSEQ_OKAY:
7686 7686 /*
7687 7687 * This is replayed stateid; if seqid matches
7688 7688 * next expected, then client is using wrong seqid.
7689 7689 */
7690 7690 /* fall through */
7691 7691 case NFS4_CHKSEQ_BAD:
7692 7692 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
7693 7693 break;
7694 7694 case NFS4_CHKSEQ_REPLAY:
7695 7695 /*
7696 7696 * Note this case is the duplicate case so
7697 7697 * resp->status is already set.
7698 7698 */
7699 7699 *cs->statusp = resp->status;
7700 7700 rfs4_update_lease(sp->rs_owner->ro_client);
7701 7701 break;
7702 7702 }
7703 7703 break;
7704 7704 case NFS4_CHECK_STATEID_UNCONFIRMED:
7705 7705 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner,
7706 7706 resop) != NFS4_CHKSEQ_OKAY) {
7707 7707 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
7708 7708 break;
7709 7709 }
7710 7710 *cs->statusp = resp->status = NFS4_OK;
7711 7711
7712 7712 next_stateid(&sp->rs_stateid);
7713 7713 resp->open_stateid = sp->rs_stateid.stateid;
7714 7714 sp->rs_owner->ro_need_confirm = FALSE;
7715 7715 rfs4_update_lease(sp->rs_owner->ro_client);
7716 7716 rfs4_update_open_sequence(sp->rs_owner);
7717 7717 rfs4_update_open_resp(sp->rs_owner, resop, NULL);
7718 7718 break;
7719 7719 default:
7720 7720 ASSERT(FALSE);
7721 7721 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT;
7722 7722 break;
7723 7723 }
7724 7724 rfs4_sw_exit(&sp->rs_owner->ro_sw);
7725 7725 rfs4_state_rele(sp);
7726 7726
7727 7727 out:
7728 7728 DTRACE_NFSV4_2(op__open__confirm__done, struct compound_state *, cs,
7729 7729 OPEN_CONFIRM4res *, resp);
7730 7730 }
7731 7731
7732 7732 /*ARGSUSED*/
7733 7733 void
7734 7734 rfs4_op_open_downgrade(nfs_argop4 *argop, nfs_resop4 *resop,
7735 7735 struct svc_req *req, struct compound_state *cs)
7736 7736 {
7737 7737 OPEN_DOWNGRADE4args *args = &argop->nfs_argop4_u.opopen_downgrade;
7738 7738 OPEN_DOWNGRADE4res *resp = &resop->nfs_resop4_u.opopen_downgrade;
7739 7739 uint32_t access = args->share_access;
7740 7740 uint32_t deny = args->share_deny;
7741 7741 nfsstat4 status;
7742 7742 rfs4_state_t *sp;
7743 7743 rfs4_file_t *fp;
7744 7744 int fflags = 0;
7745 7745
7746 7746 DTRACE_NFSV4_2(op__open__downgrade__start, struct compound_state *, cs,
7747 7747 OPEN_DOWNGRADE4args *, args);
7748 7748
7749 7749 if (cs->vp == NULL) {
7750 7750 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
7751 7751 goto out;
7752 7752 }
7753 7753
7754 7754 if (cs->vp->v_type != VREG) {
7755 7755 *cs->statusp = resp->status = NFS4ERR_INVAL;
7756 7756 return;
7757 7757 }
7758 7758
7759 7759 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_VALID);
7760 7760 if (status != NFS4_OK) {
7761 7761 *cs->statusp = resp->status = status;
7762 7762 goto out;
7763 7763 }
7764 7764
7765 7765 /* Ensure specified filehandle matches */
7766 7766 if (cs->vp != sp->rs_finfo->rf_vp) {
7767 7767 rfs4_state_rele(sp);
7768 7768 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
7769 7769 goto out;
7770 7770 }
7771 7771
7772 7772 /* hold off other access to open_owner while we tinker */
7773 7773 rfs4_sw_enter(&sp->rs_owner->ro_sw);
7774 7774
7775 7775 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) {
7776 7776 case NFS4_CHECK_STATEID_OKAY:
7777 7777 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner,
7778 7778 resop) != NFS4_CHKSEQ_OKAY) {
7779 7779 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
7780 7780 goto end;
7781 7781 }
7782 7782 break;
7783 7783 case NFS4_CHECK_STATEID_OLD:
7784 7784 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
7785 7785 goto end;
7786 7786 case NFS4_CHECK_STATEID_BAD:
7787 7787 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
7788 7788 goto end;
7789 7789 case NFS4_CHECK_STATEID_EXPIRED:
7790 7790 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
7791 7791 goto end;
7792 7792 case NFS4_CHECK_STATEID_CLOSED:
7793 7793 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
7794 7794 goto end;
7795 7795 case NFS4_CHECK_STATEID_UNCONFIRMED:
7796 7796 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
7797 7797 goto end;
7798 7798 case NFS4_CHECK_STATEID_REPLAY:
7799 7799 /* Check the sequence id for the open owner */
7800 7800 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner,
7801 7801 resop)) {
7802 7802 case NFS4_CHKSEQ_OKAY:
7803 7803 /*
7804 7804 * This is replayed stateid; if seqid matches
7805 7805 * next expected, then client is using wrong seqid.
7806 7806 */
7807 7807 /* fall through */
7808 7808 case NFS4_CHKSEQ_BAD:
7809 7809 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
7810 7810 goto end;
7811 7811 case NFS4_CHKSEQ_REPLAY:
7812 7812 /*
7813 7813 * Note this case is the duplicate case so
7814 7814 * resp->status is already set.
7815 7815 */
7816 7816 *cs->statusp = resp->status;
7817 7817 rfs4_update_lease(sp->rs_owner->ro_client);
7818 7818 goto end;
7819 7819 }
7820 7820 break;
7821 7821 default:
7822 7822 ASSERT(FALSE);
7823 7823 break;
7824 7824 }
7825 7825
7826 7826 rfs4_dbe_lock(sp->rs_dbe);
7827 7827 /*
7828 7828 * Check that the new access modes and deny modes are valid.
7829 7829 * Check that no invalid bits are set.
7830 7830 */
7831 7831 if ((access & ~(OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) ||
7832 7832 (deny & ~(OPEN4_SHARE_DENY_READ | OPEN4_SHARE_DENY_WRITE))) {
7833 7833 *cs->statusp = resp->status = NFS4ERR_INVAL;
7834 7834 rfs4_update_open_sequence(sp->rs_owner);
7835 7835 rfs4_dbe_unlock(sp->rs_dbe);
7836 7836 goto end;
7837 7837 }
7838 7838
7839 7839 /*
7840 7840 * The new modes must be a subset of the current modes and
7841 7841 * the access must specify at least one mode. To test that
7842 7842 * the new mode is a subset of the current modes we bitwise
7843 7843 * AND them together and check that the result equals the new
7844 7844 * mode. For example:
7845 7845 * New mode, access == R and current mode, sp->rs_open_access == RW
7846 7846 * access & sp->rs_open_access == R == access, so the new access mode
7847 7847 * is valid. Consider access == RW, sp->rs_open_access = R
7848 7848 * access & sp->rs_open_access == R != access, so the new access mode
7849 7849 * is invalid.
7850 7850 */
7851 7851 if ((access & sp->rs_open_access) != access ||
7852 7852 (deny & sp->rs_open_deny) != deny ||
7853 7853 (access &
7854 7854 (OPEN4_SHARE_ACCESS_READ | OPEN4_SHARE_ACCESS_WRITE)) == 0) {
7855 7855 *cs->statusp = resp->status = NFS4ERR_INVAL;
7856 7856 rfs4_update_open_sequence(sp->rs_owner);
7857 7857 rfs4_dbe_unlock(sp->rs_dbe);
7858 7858 goto end;
7859 7859 }
7860 7860
7861 7861 /*
7862 7862 * Release any share locks associated with this stateID.
7863 7863 * Strictly speaking, this violates the spec because the
7864 7864 * spec effectively requires that open downgrade be atomic.
7865 7865 * At present, fs_shrlock does not have this capability.
7866 7866 */
7867 7867 (void) rfs4_unshare(sp);
7868 7868
7869 7869 status = rfs4_share(sp, access, deny);
7870 7870 if (status != NFS4_OK) {
7871 7871 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT;
7872 7872 rfs4_update_open_sequence(sp->rs_owner);
7873 7873 rfs4_dbe_unlock(sp->rs_dbe);
7874 7874 goto end;
7875 7875 }
7876 7876
7877 7877 fp = sp->rs_finfo;
7878 7878 rfs4_dbe_lock(fp->rf_dbe);
7879 7879
7880 7880 /*
7881 7881 * If the current mode has deny read and the new mode
7882 7882 * does not, decrement the number of deny read mode bits
7883 7883 * and if it goes to zero turn off the deny read bit
7884 7884 * on the file.
7885 7885 */
7886 7886 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_READ) &&
7887 7887 (deny & OPEN4_SHARE_DENY_READ) == 0) {
7888 7888 fp->rf_deny_read--;
7889 7889 if (fp->rf_deny_read == 0)
7890 7890 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ;
7891 7891 }
7892 7892
7893 7893 /*
7894 7894 * If the current mode has deny write and the new mode
7895 7895 * does not, decrement the number of deny write mode bits
7896 7896 * and if it goes to zero turn off the deny write bit
7897 7897 * on the file.
7898 7898 */
7899 7899 if ((sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) &&
7900 7900 (deny & OPEN4_SHARE_DENY_WRITE) == 0) {
7901 7901 fp->rf_deny_write--;
7902 7902 if (fp->rf_deny_write == 0)
7903 7903 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE;
7904 7904 }
7905 7905
7906 7906 /*
7907 7907 * If the current mode has access read and the new mode
7908 7908 * does not, decrement the number of access read mode bits
7909 7909 * and if it goes to zero turn off the access read bit
7910 7910 * on the file. set fflags to FREAD for the call to
7911 7911 * vn_open_downgrade().
7912 7912 */
7913 7913 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) &&
7914 7914 (access & OPEN4_SHARE_ACCESS_READ) == 0) {
7915 7915 fp->rf_access_read--;
7916 7916 if (fp->rf_access_read == 0)
7917 7917 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ;
7918 7918 fflags |= FREAD;
7919 7919 }
7920 7920
7921 7921 /*
7922 7922 * If the current mode has access write and the new mode
7923 7923 * does not, decrement the number of access write mode bits
7924 7924 * and if it goes to zero turn off the access write bit
7925 7925 * on the file. set fflags to FWRITE for the call to
7926 7926 * vn_open_downgrade().
7927 7927 */
7928 7928 if ((sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) &&
7929 7929 (access & OPEN4_SHARE_ACCESS_WRITE) == 0) {
7930 7930 fp->rf_access_write--;
7931 7931 if (fp->rf_access_write == 0)
7932 7932 fp->rf_share_deny &= ~OPEN4_SHARE_ACCESS_WRITE;
7933 7933 fflags |= FWRITE;
7934 7934 }
7935 7935
7936 7936 /* Check that the file is still accessible */
7937 7937 ASSERT(fp->rf_share_access);
7938 7938
7939 7939 rfs4_dbe_unlock(fp->rf_dbe);
7940 7940
7941 7941 /* now set the new open access and deny modes */
7942 7942 sp->rs_open_access = access;
7943 7943 sp->rs_open_deny = deny;
7944 7944
7945 7945 /*
7946 7946 * we successfully downgraded the share lock, now we need to downgrade
7947 7947 * the open. it is possible that the downgrade was only for a deny
7948 7948 * mode and we have nothing else to do.
7949 7949 */
7950 7950 if ((fflags & (FREAD|FWRITE)) != 0)
7951 7951 vn_open_downgrade(cs->vp, fflags);
7952 7952
7953 7953 /* Update the stateid */
7954 7954 next_stateid(&sp->rs_stateid);
7955 7955 resp->open_stateid = sp->rs_stateid.stateid;
7956 7956
7957 7957 rfs4_dbe_unlock(sp->rs_dbe);
7958 7958
7959 7959 *cs->statusp = resp->status = NFS4_OK;
7960 7960 /* Update the lease */
7961 7961 rfs4_update_lease(sp->rs_owner->ro_client);
7962 7962 /* And the sequence */
7963 7963 rfs4_update_open_sequence(sp->rs_owner);
7964 7964 rfs4_update_open_resp(sp->rs_owner, resop, NULL);
7965 7965
7966 7966 end:
7967 7967 rfs4_sw_exit(&sp->rs_owner->ro_sw);
7968 7968 rfs4_state_rele(sp);
7969 7969 out:
7970 7970 DTRACE_NFSV4_2(op__open__downgrade__done, struct compound_state *, cs,
7971 7971 OPEN_DOWNGRADE4res *, resp);
7972 7972 }
7973 7973
7974 7974 static void *
7975 7975 memstr(const void *s1, const char *s2, size_t n)
7976 7976 {
7977 7977 size_t l = strlen(s2);
7978 7978 char *p = (char *)s1;
7979 7979
7980 7980 while (n >= l) {
7981 7981 if (bcmp(p, s2, l) == 0)
7982 7982 return (p);
7983 7983 p++;
7984 7984 n--;
7985 7985 }
7986 7986
7987 7987 return (NULL);
7988 7988 }
7989 7989
7990 7990 /*
7991 7991 * The logic behind this function is detailed in the NFSv4 RFC in the
7992 7992 * SETCLIENTID operation description under IMPLEMENTATION. Refer to
7993 7993 * that section for explicit guidance to server behavior for
7994 7994 * SETCLIENTID.
7995 7995 */
7996 7996 void
7997 7997 rfs4_op_setclientid(nfs_argop4 *argop, nfs_resop4 *resop,
7998 7998 struct svc_req *req, struct compound_state *cs)
7999 7999 {
8000 8000 SETCLIENTID4args *args = &argop->nfs_argop4_u.opsetclientid;
8001 8001 SETCLIENTID4res *res = &resop->nfs_resop4_u.opsetclientid;
8002 8002 rfs4_client_t *cp, *newcp, *cp_confirmed, *cp_unconfirmed;
8003 8003 rfs4_clntip_t *ci;
8004 8004 bool_t create;
8005 8005 char *addr, *netid;
8006 8006 int len;
8007 8007
8008 8008 DTRACE_NFSV4_2(op__setclientid__start, struct compound_state *, cs,
8009 8009 SETCLIENTID4args *, args);
8010 8010 retry:
8011 8011 newcp = cp_confirmed = cp_unconfirmed = NULL;
8012 8012
8013 8013 /*
8014 8014 * Save the caller's IP address
8015 8015 */
8016 8016 args->client.cl_addr =
8017 8017 (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
8018 8018
8019 8019 /*
8020 8020 * Record if it is a Solaris client that cannot handle referrals.
8021 8021 */
8022 8022 if (memstr(args->client.id_val, "Solaris", args->client.id_len) &&
8023 8023 !memstr(args->client.id_val, "+referrals", args->client.id_len)) {
8024 8024 /* Add a "yes, it's downrev" record */
8025 8025 create = TRUE;
8026 8026 ci = rfs4_find_clntip(args->client.cl_addr, &create);
8027 8027 ASSERT(ci != NULL);
8028 8028 rfs4_dbe_rele(ci->ri_dbe);
8029 8029 } else {
8030 8030 /* Remove any previous record */
8031 8031 rfs4_invalidate_clntip(args->client.cl_addr);
8032 8032 }
8033 8033
8034 8034 /*
8035 8035 * In search of an EXISTING client matching the incoming
8036 8036 * request to establish a new client identifier at the server
8037 8037 */
8038 8038 create = TRUE;
8039 8039 cp = rfs4_findclient(&args->client, &create, NULL);
8040 8040
8041 8041 /* Should never happen */
8042 8042 ASSERT(cp != NULL);
8043 8043
8044 8044 if (cp == NULL) {
8045 8045 *cs->statusp = res->status = NFS4ERR_SERVERFAULT;
8046 8046 goto out;
8047 8047 }
8048 8048
8049 8049 /*
8050 8050 * Easiest case. Client identifier is newly created and is
8051 8051 * unconfirmed. Also note that for this case, no other
8052 8052 * entries exist for the client identifier. Nothing else to
8053 8053 * check. Just setup the response and respond.
8054 8054 */
8055 8055 if (create) {
8056 8056 *cs->statusp = res->status = NFS4_OK;
8057 8057 res->SETCLIENTID4res_u.resok4.clientid = cp->rc_clientid;
8058 8058 res->SETCLIENTID4res_u.resok4.setclientid_confirm =
8059 8059 cp->rc_confirm_verf;
8060 8060 /* Setup callback information; CB_NULL confirmation later */
8061 8061 rfs4_client_setcb(cp, &args->callback, args->callback_ident);
8062 8062
8063 8063 rfs4_client_rele(cp);
8064 8064 goto out;
8065 8065 }
8066 8066
8067 8067 /*
8068 8068 * An existing, confirmed client may exist but it may not have
8069 8069 * been active for at least one lease period. If so, then
8070 8070 * "close" the client and create a new client identifier
8071 8071 */
8072 8072 if (rfs4_lease_expired(cp)) {
8073 8073 rfs4_client_close(cp);
8074 8074 goto retry;
8075 8075 }
8076 8076
8077 8077 if (cp->rc_need_confirm == TRUE)
8078 8078 cp_unconfirmed = cp;
8079 8079 else
8080 8080 cp_confirmed = cp;
8081 8081
8082 8082 cp = NULL;
8083 8083
8084 8084 /*
8085 8085 * We have a confirmed client, now check for an
8086 8086 * unconfimred entry
8087 8087 */
8088 8088 if (cp_confirmed) {
8089 8089 /* If creds don't match then client identifier is inuse */
8090 8090 if (!creds_ok(cp_confirmed->rc_cr_set, req, cs)) {
8091 8091 rfs4_cbinfo_t *cbp;
8092 8092 /*
8093 8093 * Some one else has established this client
8094 8094 * id. Try and say * who they are. We will use
8095 8095 * the call back address supplied by * the
8096 8096 * first client.
8097 8097 */
8098 8098 *cs->statusp = res->status = NFS4ERR_CLID_INUSE;
8099 8099
8100 8100 addr = netid = NULL;
8101 8101
8102 8102 cbp = &cp_confirmed->rc_cbinfo;
8103 8103 if (cbp->cb_callback.cb_location.r_addr &&
8104 8104 cbp->cb_callback.cb_location.r_netid) {
8105 8105 cb_client4 *cbcp = &cbp->cb_callback;
8106 8106
8107 8107 len = strlen(cbcp->cb_location.r_addr)+1;
8108 8108 addr = kmem_alloc(len, KM_SLEEP);
8109 8109 bcopy(cbcp->cb_location.r_addr, addr, len);
8110 8110 len = strlen(cbcp->cb_location.r_netid)+1;
8111 8111 netid = kmem_alloc(len, KM_SLEEP);
8112 8112 bcopy(cbcp->cb_location.r_netid, netid, len);
8113 8113 }
8114 8114
8115 8115 res->SETCLIENTID4res_u.client_using.r_addr = addr;
8116 8116 res->SETCLIENTID4res_u.client_using.r_netid = netid;
8117 8117
8118 8118 rfs4_client_rele(cp_confirmed);
8119 8119 }
8120 8120
8121 8121 /*
8122 8122 * Confirmed, creds match, and verifier matches; must
8123 8123 * be an update of the callback info
8124 8124 */
8125 8125 if (cp_confirmed->rc_nfs_client.verifier ==
8126 8126 args->client.verifier) {
8127 8127 /* Setup callback information */
8128 8128 rfs4_client_setcb(cp_confirmed, &args->callback,
8129 8129 args->callback_ident);
8130 8130
8131 8131 /* everything okay -- move ahead */
8132 8132 *cs->statusp = res->status = NFS4_OK;
8133 8133 res->SETCLIENTID4res_u.resok4.clientid =
8134 8134 cp_confirmed->rc_clientid;
8135 8135
8136 8136 /* update the confirm_verifier and return it */
8137 8137 rfs4_client_scv_next(cp_confirmed);
8138 8138 res->SETCLIENTID4res_u.resok4.setclientid_confirm =
8139 8139 cp_confirmed->rc_confirm_verf;
8140 8140
8141 8141 rfs4_client_rele(cp_confirmed);
8142 8142 goto out;
8143 8143 }
8144 8144
8145 8145 /*
8146 8146 * Creds match but the verifier doesn't. Must search
8147 8147 * for an unconfirmed client that would be replaced by
8148 8148 * this request.
8149 8149 */
8150 8150 create = FALSE;
8151 8151 cp_unconfirmed = rfs4_findclient(&args->client, &create,
8152 8152 cp_confirmed);
8153 8153 }
8154 8154
8155 8155 /*
8156 8156 * At this point, we have taken care of the brand new client
8157 8157 * struct, INUSE case, update of an existing, and confirmed
8158 8158 * client struct.
8159 8159 */
8160 8160
8161 8161 /*
8162 8162 * check to see if things have changed while we originally
8163 8163 * picked up the client struct. If they have, then return and
8164 8164 * retry the processing of this SETCLIENTID request.
8165 8165 */
8166 8166 if (cp_unconfirmed) {
8167 8167 rfs4_dbe_lock(cp_unconfirmed->rc_dbe);
8168 8168 if (!cp_unconfirmed->rc_need_confirm) {
8169 8169 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe);
8170 8170 rfs4_client_rele(cp_unconfirmed);
8171 8171 if (cp_confirmed)
8172 8172 rfs4_client_rele(cp_confirmed);
8173 8173 goto retry;
8174 8174 }
8175 8175 /* do away with the old unconfirmed one */
8176 8176 rfs4_dbe_invalidate(cp_unconfirmed->rc_dbe);
8177 8177 rfs4_dbe_unlock(cp_unconfirmed->rc_dbe);
8178 8178 rfs4_client_rele(cp_unconfirmed);
8179 8179 cp_unconfirmed = NULL;
8180 8180 }
8181 8181
8182 8182 /*
8183 8183 * This search will temporarily hide the confirmed client
8184 8184 * struct while a new client struct is created as the
8185 8185 * unconfirmed one.
8186 8186 */
8187 8187 create = TRUE;
8188 8188 newcp = rfs4_findclient(&args->client, &create, cp_confirmed);
8189 8189
8190 8190 ASSERT(newcp != NULL);
8191 8191
8192 8192 if (newcp == NULL) {
8193 8193 *cs->statusp = res->status = NFS4ERR_SERVERFAULT;
8194 8194 rfs4_client_rele(cp_confirmed);
8195 8195 goto out;
8196 8196 }
8197 8197
8198 8198 /*
8199 8199 * If one was not created, then a similar request must be in
8200 8200 * process so release and start over with this one
8201 8201 */
8202 8202 if (create != TRUE) {
8203 8203 rfs4_client_rele(newcp);
8204 8204 if (cp_confirmed)
8205 8205 rfs4_client_rele(cp_confirmed);
8206 8206 goto retry;
8207 8207 }
8208 8208
8209 8209 *cs->statusp = res->status = NFS4_OK;
8210 8210 res->SETCLIENTID4res_u.resok4.clientid = newcp->rc_clientid;
8211 8211 res->SETCLIENTID4res_u.resok4.setclientid_confirm =
8212 8212 newcp->rc_confirm_verf;
8213 8213 /* Setup callback information; CB_NULL confirmation later */
8214 8214 rfs4_client_setcb(newcp, &args->callback, args->callback_ident);
8215 8215
8216 8216 newcp->rc_cp_confirmed = cp_confirmed;
8217 8217
8218 8218 rfs4_client_rele(newcp);
8219 8219
8220 8220 out:
8221 8221 DTRACE_NFSV4_2(op__setclientid__done, struct compound_state *, cs,
8222 8222 SETCLIENTID4res *, res);
8223 8223 }
8224 8224
8225 8225 /*ARGSUSED*/
8226 8226 void
8227 8227 rfs4_op_setclientid_confirm(nfs_argop4 *argop, nfs_resop4 *resop,
8228 8228 struct svc_req *req, struct compound_state *cs)
8229 8229 {
8230 8230 SETCLIENTID_CONFIRM4args *args =
8231 8231 &argop->nfs_argop4_u.opsetclientid_confirm;
8232 8232 SETCLIENTID_CONFIRM4res *res =
8233 8233 &resop->nfs_resop4_u.opsetclientid_confirm;
8234 8234 rfs4_client_t *cp, *cptoclose = NULL;
8235 8235 nfs4_srv_t *nsrv4;
8236 8236
8237 8237 DTRACE_NFSV4_2(op__setclientid__confirm__start,
8238 8238 struct compound_state *, cs,
8239 8239 SETCLIENTID_CONFIRM4args *, args);
8240 8240
8241 8241 nsrv4 = nfs4_get_srv();
8242 8242 *cs->statusp = res->status = NFS4_OK;
8243 8243
8244 8244 cp = rfs4_findclient_by_id(args->clientid, TRUE);
8245 8245
8246 8246 if (cp == NULL) {
8247 8247 *cs->statusp = res->status =
8248 8248 rfs4_check_clientid(&args->clientid, 1);
8249 8249 goto out;
8250 8250 }
8251 8251
8252 8252 if (!creds_ok(cp, req, cs)) {
8253 8253 *cs->statusp = res->status = NFS4ERR_CLID_INUSE;
8254 8254 rfs4_client_rele(cp);
8255 8255 goto out;
8256 8256 }
8257 8257
8258 8258 /* If the verifier doesn't match, the record doesn't match */
8259 8259 if (cp->rc_confirm_verf != args->setclientid_confirm) {
8260 8260 *cs->statusp = res->status = NFS4ERR_STALE_CLIENTID;
8261 8261 rfs4_client_rele(cp);
8262 8262 goto out;
8263 8263 }
8264 8264
8265 8265 rfs4_dbe_lock(cp->rc_dbe);
8266 8266 cp->rc_need_confirm = FALSE;
8267 8267 if (cp->rc_cp_confirmed) {
8268 8268 cptoclose = cp->rc_cp_confirmed;
8269 8269 cptoclose->rc_ss_remove = 1;
8270 8270 cp->rc_cp_confirmed = NULL;
8271 8271 }
8272 8272
8273 8273 /*
8274 8274 * Update the client's associated server instance, if it's changed
8275 8275 * since the client was created.
8276 8276 */
8277 8277 if (rfs4_servinst(cp) != nsrv4->nfs4_cur_servinst)
8278 8278 rfs4_servinst_assign(nsrv4, cp, nsrv4->nfs4_cur_servinst);
8279 8279
8280 8280 /*
8281 8281 * Record clientid in stable storage.
8282 8282 * Must be done after server instance has been assigned.
8283 8283 */
8284 8284 rfs4_ss_clid(nsrv4, cp);
8285 8285
8286 8286 rfs4_dbe_unlock(cp->rc_dbe);
8287 8287
8288 8288 if (cptoclose)
8289 8289 /* don't need to rele, client_close does it */
8290 8290 rfs4_client_close(cptoclose);
8291 8291
8292 8292 /* If needed, initiate CB_NULL call for callback path */
8293 8293 rfs4_deleg_cb_check(cp);
8294 8294 rfs4_update_lease(cp);
8295 8295
8296 8296 /*
8297 8297 * Check to see if client can perform reclaims
8298 8298 */
8299 8299 rfs4_ss_chkclid(nsrv4, cp);
8300 8300
8301 8301 rfs4_client_rele(cp);
8302 8302
8303 8303 out:
8304 8304 DTRACE_NFSV4_2(op__setclientid__confirm__done,
8305 8305 struct compound_state *, cs,
8306 8306 SETCLIENTID_CONFIRM4 *, res);
8307 8307 }
8308 8308
8309 8309
8310 8310 /*ARGSUSED*/
8311 8311 void
8312 8312 rfs4_op_close(nfs_argop4 *argop, nfs_resop4 *resop,
8313 8313 struct svc_req *req, struct compound_state *cs)
8314 8314 {
8315 8315 CLOSE4args *args = &argop->nfs_argop4_u.opclose;
8316 8316 CLOSE4res *resp = &resop->nfs_resop4_u.opclose;
8317 8317 rfs4_state_t *sp;
8318 8318 nfsstat4 status;
8319 8319
8320 8320 DTRACE_NFSV4_2(op__close__start, struct compound_state *, cs,
8321 8321 CLOSE4args *, args);
8322 8322
8323 8323 if (cs->vp == NULL) {
8324 8324 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
8325 8325 goto out;
8326 8326 }
8327 8327
8328 8328 status = rfs4_get_state(&args->open_stateid, &sp, RFS4_DBS_INVALID);
8329 8329 if (status != NFS4_OK) {
8330 8330 *cs->statusp = resp->status = status;
8331 8331 goto out;
8332 8332 }
8333 8333
8334 8334 /* Ensure specified filehandle matches */
8335 8335 if (cs->vp != sp->rs_finfo->rf_vp) {
8336 8336 rfs4_state_rele(sp);
8337 8337 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
8338 8338 goto out;
8339 8339 }
8340 8340
8341 8341 /* hold off other access to open_owner while we tinker */
8342 8342 rfs4_sw_enter(&sp->rs_owner->ro_sw);
8343 8343
8344 8344 switch (rfs4_check_stateid_seqid(sp, &args->open_stateid)) {
8345 8345 case NFS4_CHECK_STATEID_OKAY:
8346 8346 if (rfs4_check_open_seqid(args->seqid, sp->rs_owner,
8347 8347 resop) != NFS4_CHKSEQ_OKAY) {
8348 8348 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
8349 8349 goto end;
8350 8350 }
8351 8351 break;
8352 8352 case NFS4_CHECK_STATEID_OLD:
8353 8353 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
8354 8354 goto end;
8355 8355 case NFS4_CHECK_STATEID_BAD:
8356 8356 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
8357 8357 goto end;
8358 8358 case NFS4_CHECK_STATEID_EXPIRED:
8359 8359 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
8360 8360 goto end;
8361 8361 case NFS4_CHECK_STATEID_CLOSED:
8362 8362 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
8363 8363 goto end;
8364 8364 case NFS4_CHECK_STATEID_UNCONFIRMED:
8365 8365 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
8366 8366 goto end;
8367 8367 case NFS4_CHECK_STATEID_REPLAY:
8368 8368 /* Check the sequence id for the open owner */
8369 8369 switch (rfs4_check_open_seqid(args->seqid, sp->rs_owner,
8370 8370 resop)) {
8371 8371 case NFS4_CHKSEQ_OKAY:
8372 8372 /*
8373 8373 * This is replayed stateid; if seqid matches
8374 8374 * next expected, then client is using wrong seqid.
8375 8375 */
8376 8376 /* FALL THROUGH */
8377 8377 case NFS4_CHKSEQ_BAD:
8378 8378 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
8379 8379 goto end;
8380 8380 case NFS4_CHKSEQ_REPLAY:
8381 8381 /*
8382 8382 * Note this case is the duplicate case so
8383 8383 * resp->status is already set.
8384 8384 */
8385 8385 *cs->statusp = resp->status;
8386 8386 rfs4_update_lease(sp->rs_owner->ro_client);
8387 8387 goto end;
8388 8388 }
8389 8389 break;
8390 8390 default:
8391 8391 ASSERT(FALSE);
8392 8392 break;
8393 8393 }
8394 8394
8395 8395 rfs4_dbe_lock(sp->rs_dbe);
8396 8396
8397 8397 /* Update the stateid. */
8398 8398 next_stateid(&sp->rs_stateid);
8399 8399 resp->open_stateid = sp->rs_stateid.stateid;
8400 8400
8401 8401 rfs4_dbe_unlock(sp->rs_dbe);
8402 8402
8403 8403 rfs4_update_lease(sp->rs_owner->ro_client);
8404 8404 rfs4_update_open_sequence(sp->rs_owner);
8405 8405 rfs4_update_open_resp(sp->rs_owner, resop, NULL);
8406 8406
8407 8407 rfs4_state_close(sp, FALSE, FALSE, cs->cr);
8408 8408
8409 8409 *cs->statusp = resp->status = status;
8410 8410
8411 8411 end:
8412 8412 rfs4_sw_exit(&sp->rs_owner->ro_sw);
8413 8413 rfs4_state_rele(sp);
8414 8414 out:
8415 8415 DTRACE_NFSV4_2(op__close__done, struct compound_state *, cs,
8416 8416 CLOSE4res *, resp);
8417 8417 }
8418 8418
8419 8419 /*
8420 8420 * Manage the counts on the file struct and close all file locks
8421 8421 */
8422 8422 /*ARGSUSED*/
8423 8423 void
8424 8424 rfs4_release_share_lock_state(rfs4_state_t *sp, cred_t *cr,
8425 8425 bool_t close_of_client)
8426 8426 {
8427 8427 rfs4_file_t *fp = sp->rs_finfo;
8428 8428 rfs4_lo_state_t *lsp;
8429 8429 int fflags = 0;
8430 8430
8431 8431 /*
8432 8432 * If this call is part of the larger closing down of client
8433 8433 * state then it is just easier to release all locks
8434 8434 * associated with this client instead of going through each
8435 8435 * individual file and cleaning locks there.
8436 8436 */
8437 8437 if (close_of_client) {
8438 8438 if (sp->rs_owner->ro_client->rc_unlksys_completed == FALSE &&
8439 8439 !list_is_empty(&sp->rs_lostatelist) &&
8440 8440 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID) {
8441 8441 /* Is the PxFS kernel module loaded? */
8442 8442 if (lm_remove_file_locks != NULL) {
8443 8443 int new_sysid;
8444 8444
8445 8445 /* Encode the cluster nodeid in new sysid */
8446 8446 new_sysid = sp->rs_owner->ro_client->rc_sysidt;
8447 8447 lm_set_nlmid_flk(&new_sysid);
8448 8448
8449 8449 /*
8450 8450 * This PxFS routine removes file locks for a
8451 8451 * client over all nodes of a cluster.
8452 8452 */
8453 8453 NFS4_DEBUG(rfs4_debug, (CE_NOTE,
8454 8454 "lm_remove_file_locks(sysid=0x%x)\n",
8455 8455 new_sysid));
8456 8456 (*lm_remove_file_locks)(new_sysid);
8457 8457 } else {
8458 8458 struct flock64 flk;
8459 8459
8460 8460 /* Release all locks for this client */
8461 8461 flk.l_type = F_UNLKSYS;
8462 8462 flk.l_whence = 0;
8463 8463 flk.l_start = 0;
8464 8464 flk.l_len = 0;
8465 8465 flk.l_sysid =
8466 8466 sp->rs_owner->ro_client->rc_sysidt;
8467 8467 flk.l_pid = 0;
8468 8468 (void) VOP_FRLOCK(sp->rs_finfo->rf_vp, F_SETLK,
8469 8469 &flk, F_REMOTELOCK | FREAD | FWRITE,
8470 8470 (u_offset_t)0, NULL, CRED(), NULL);
8471 8471 }
8472 8472
8473 8473 sp->rs_owner->ro_client->rc_unlksys_completed = TRUE;
8474 8474 }
8475 8475 }
8476 8476
8477 8477 /*
8478 8478 * Release all locks on this file by this lock owner or at
8479 8479 * least mark the locks as having been released
8480 8480 */
8481 8481 for (lsp = list_head(&sp->rs_lostatelist); lsp != NULL;
8482 8482 lsp = list_next(&sp->rs_lostatelist, lsp)) {
8483 8483 lsp->rls_locks_cleaned = TRUE;
8484 8484
8485 8485 /* Was this already taken care of above? */
8486 8486 if (!close_of_client &&
8487 8487 sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID)
8488 8488 (void) cleanlocks(sp->rs_finfo->rf_vp,
8489 8489 lsp->rls_locker->rl_pid,
8490 8490 lsp->rls_locker->rl_client->rc_sysidt);
8491 8491 }
8492 8492
8493 8493 /*
8494 8494 * Release any shrlocks associated with this open state ID.
8495 8495 * This must be done before the rfs4_state gets marked closed.
8496 8496 */
8497 8497 if (sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID)
8498 8498 (void) rfs4_unshare(sp);
8499 8499
8500 8500 if (sp->rs_open_access) {
8501 8501 rfs4_dbe_lock(fp->rf_dbe);
8502 8502
8503 8503 /*
8504 8504 * Decrement the count for each access and deny bit that this
8505 8505 * state has contributed to the file.
8506 8506 * If the file counts go to zero
8507 8507 * clear the appropriate bit in the appropriate mask.
8508 8508 */
8509 8509 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_READ) {
8510 8510 fp->rf_access_read--;
8511 8511 fflags |= FREAD;
8512 8512 if (fp->rf_access_read == 0)
8513 8513 fp->rf_share_access &= ~OPEN4_SHARE_ACCESS_READ;
8514 8514 }
8515 8515 if (sp->rs_open_access & OPEN4_SHARE_ACCESS_WRITE) {
8516 8516 fp->rf_access_write--;
8517 8517 fflags |= FWRITE;
8518 8518 if (fp->rf_access_write == 0)
8519 8519 fp->rf_share_access &=
8520 8520 ~OPEN4_SHARE_ACCESS_WRITE;
8521 8521 }
8522 8522 if (sp->rs_open_deny & OPEN4_SHARE_DENY_READ) {
8523 8523 fp->rf_deny_read--;
8524 8524 if (fp->rf_deny_read == 0)
8525 8525 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_READ;
8526 8526 }
8527 8527 if (sp->rs_open_deny & OPEN4_SHARE_DENY_WRITE) {
8528 8528 fp->rf_deny_write--;
8529 8529 if (fp->rf_deny_write == 0)
8530 8530 fp->rf_share_deny &= ~OPEN4_SHARE_DENY_WRITE;
8531 8531 }
8532 8532
8533 8533 (void) VOP_CLOSE(fp->rf_vp, fflags, 1, (offset_t)0, cr, NULL);
8534 8534
8535 8535 rfs4_dbe_unlock(fp->rf_dbe);
8536 8536
8537 8537 sp->rs_open_access = 0;
8538 8538 sp->rs_open_deny = 0;
8539 8539 }
8540 8540 }
8541 8541
8542 8542 /*
8543 8543 * lock_denied: Fill in a LOCK4deneid structure given an flock64 structure.
8544 8544 */
8545 8545 static nfsstat4
8546 8546 lock_denied(LOCK4denied *dp, struct flock64 *flk)
8547 8547 {
8548 8548 rfs4_lockowner_t *lo;
8549 8549 rfs4_client_t *cp;
8550 8550 uint32_t len;
8551 8551
8552 8552 lo = rfs4_findlockowner_by_pid(flk->l_pid);
8553 8553 if (lo != NULL) {
8554 8554 cp = lo->rl_client;
8555 8555 if (rfs4_lease_expired(cp)) {
8556 8556 rfs4_lockowner_rele(lo);
8557 8557 rfs4_dbe_hold(cp->rc_dbe);
8558 8558 rfs4_client_close(cp);
8559 8559 return (NFS4ERR_EXPIRED);
8560 8560 }
8561 8561 dp->owner.clientid = lo->rl_owner.clientid;
8562 8562 len = lo->rl_owner.owner_len;
8563 8563 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP);
8564 8564 bcopy(lo->rl_owner.owner_val, dp->owner.owner_val, len);
8565 8565 dp->owner.owner_len = len;
8566 8566 rfs4_lockowner_rele(lo);
8567 8567 goto finish;
8568 8568 }
8569 8569
8570 8570 /*
8571 8571 * Its not a NFS4 lock. We take advantage that the upper 32 bits
8572 8572 * of the client id contain the boot time for a NFS4 lock. So we
8573 8573 * fabricate and identity by setting clientid to the sysid, and
8574 8574 * the lock owner to the pid.
8575 8575 */
8576 8576 dp->owner.clientid = flk->l_sysid;
8577 8577 len = sizeof (pid_t);
8578 8578 dp->owner.owner_len = len;
8579 8579 dp->owner.owner_val = kmem_alloc(len, KM_SLEEP);
8580 8580 bcopy(&flk->l_pid, dp->owner.owner_val, len);
8581 8581 finish:
8582 8582 dp->offset = flk->l_start;
8583 8583 dp->length = flk->l_len;
8584 8584
8585 8585 if (flk->l_type == F_RDLCK)
8586 8586 dp->locktype = READ_LT;
8587 8587 else if (flk->l_type == F_WRLCK)
8588 8588 dp->locktype = WRITE_LT;
8589 8589 else
8590 8590 return (NFS4ERR_INVAL); /* no mapping from POSIX ltype to v4 */
8591 8591
8592 8592 return (NFS4_OK);
8593 8593 }
8594 8594
8595 8595 /*
8596 8596 * The NFSv4.0 LOCK operation does not support the blocking lock (at the
8597 8597 * NFSv4.0 protocol level) so the client needs to resend the LOCK request in a
8598 8598 * case the lock is denied by the NFSv4.0 server. NFSv4.0 clients are prepared
8599 8599 * for that (obviously); they are sending the LOCK requests with some delays
8600 8600 * between the attempts. See nfs4frlock() and nfs4_block_and_wait() for the
8601 8601 * locking and delay implementation at the client side.
8602 8602 *
8603 8603 * To make the life of the clients easier, the NFSv4.0 server tries to do some
8604 8604 * fast retries on its own (the for loop below) in a hope the lock will be
8605 8605 * available soon. And if not, the client won't need to resend the LOCK
8606 8606 * requests so fast to check the lock availability. This basically saves some
8607 8607 * network traffic and tries to make sure the client gets the lock ASAP.
8608 8608 */
8609 8609 static int
8610 8610 setlock(vnode_t *vp, struct flock64 *flock, int flag, cred_t *cred)
8611 8611 {
8612 8612 int error;
8613 8613 struct flock64 flk;
8614 8614 int i;
8615 8615 clock_t delaytime;
8616 8616 int cmd;
8617 8617 int spin_cnt = 0;
8618 8618
8619 8619 cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK;
8620 8620 retry:
8621 8621 delaytime = MSEC_TO_TICK_ROUNDUP(rfs4_lock_delay);
8622 8622
8623 8623 for (i = 0; i < rfs4_maxlock_tries; i++) {
8624 8624 LOCK_PRINT(rfs4_debug, "setlock", cmd, flock);
8625 8625 error = VOP_FRLOCK(vp, cmd,
8626 8626 flock, flag, (u_offset_t)0, NULL, cred, NULL);
8627 8627
8628 8628 if (error != EAGAIN && error != EACCES)
8629 8629 break;
8630 8630
8631 8631 if (i < rfs4_maxlock_tries - 1) {
8632 8632 delay(delaytime);
8633 8633 delaytime *= 2;
8634 8634 }
8635 8635 }
8636 8636
8637 8637 if (error == EAGAIN || error == EACCES) {
8638 8638 /* Get the owner of the lock */
8639 8639 flk = *flock;
8640 8640 LOCK_PRINT(rfs4_debug, "setlock", F_GETLK, &flk);
8641 8641 if (VOP_FRLOCK(vp, F_GETLK, &flk, flag, 0, NULL, cred,
8642 8642 NULL) == 0) {
8643 8643 /*
8644 8644 * There's a race inherent in the current VOP_FRLOCK
8645 8645 * design where:
8646 8646 * a: "other guy" takes a lock that conflicts with a
8647 8647 * lock we want
8648 8648 * b: we attempt to take our lock (non-blocking) and
8649 8649 * the attempt fails.
8650 8650 * c: "other guy" releases the conflicting lock
8651 8651 * d: we ask what lock conflicts with the lock we want,
8652 8652 * getting F_UNLCK (no lock blocks us)
8653 8653 *
8654 8654 * If we retry the non-blocking lock attempt in this
8655 8655 * case (restart at step 'b') there's some possibility
8656 8656 * that many such attempts might fail. However a test
8657 8657 * designed to actually provoke this race shows that
8658 8658 * the vast majority of cases require no retry, and
8659 8659 * only a few took as many as three retries. Here's
8660 8660 * the test outcome:
8661 8661 *
8662 8662 * number of retries how many times we needed
8663 8663 * that many retries
8664 8664 * 0 79461
8665 8665 * 1 862
8666 8666 * 2 49
8667 8667 * 3 5
8668 8668 *
8669 8669 * Given those empirical results, we arbitrarily limit
8670 8670 * the retry count to ten.
8671 8671 *
8672 8672 * If we actually make to ten retries and give up,
8673 8673 * nothing catastrophic happens, but we're unable to
8674 8674 * return the information about the conflicting lock to
8675 8675 * the NFS client. That's an acceptable trade off vs.
8676 8676 * letting this retry loop run forever.
8677 8677 */
8678 8678 if (flk.l_type == F_UNLCK) {
8679 8679 if (spin_cnt++ < 10) {
8680 8680 /* No longer locked, retry */
8681 8681 goto retry;
8682 8682 }
8683 8683 } else {
8684 8684 *flock = flk;
8685 8685 LOCK_PRINT(rfs4_debug, "setlock(blocking lock)",
8686 8686 F_GETLK, &flk);
8687 8687 }
8688 8688 }
8689 8689 }
8690 8690
8691 8691 return (error);
8692 8692 }
8693 8693
8694 8694 /*ARGSUSED*/
8695 8695 static nfsstat4
8696 8696 rfs4_do_lock(rfs4_lo_state_t *lsp, nfs_lock_type4 locktype,
8697 8697 offset4 offset, length4 length, cred_t *cred, nfs_resop4 *resop)
8698 8698 {
8699 8699 nfsstat4 status;
8700 8700 rfs4_lockowner_t *lo = lsp->rls_locker;
8701 8701 rfs4_state_t *sp = lsp->rls_state;
8702 8702 struct flock64 flock;
8703 8703 int16_t ltype;
8704 8704 int flag;
8705 8705 int error;
8706 8706 sysid_t sysid;
8707 8707 LOCK4res *lres;
8708 8708 vnode_t *vp;
8709 8709
8710 8710 if (rfs4_lease_expired(lo->rl_client)) {
8711 8711 return (NFS4ERR_EXPIRED);
8712 8712 }
8713 8713
8714 8714 if ((status = rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK)
8715 8715 return (status);
8716 8716
8717 8717 /* Check for zero length. To lock to end of file use all ones for V4 */
8718 8718 if (length == 0)
8719 8719 return (NFS4ERR_INVAL);
8720 8720 else if (length == (length4)(~0))
8721 8721 length = 0; /* Posix to end of file */
8722 8722
8723 8723 retry:
8724 8724 rfs4_dbe_lock(sp->rs_dbe);
8725 8725 if (sp->rs_closed == TRUE) {
8726 8726 rfs4_dbe_unlock(sp->rs_dbe);
8727 8727 return (NFS4ERR_OLD_STATEID);
8728 8728 }
8729 8729
8730 8730 if (resop->resop != OP_LOCKU) {
8731 8731 switch (locktype) {
8732 8732 case READ_LT:
8733 8733 case READW_LT:
8734 8734 if ((sp->rs_share_access
8735 8735 & OPEN4_SHARE_ACCESS_READ) == 0) {
8736 8736 rfs4_dbe_unlock(sp->rs_dbe);
8737 8737
8738 8738 return (NFS4ERR_OPENMODE);
8739 8739 }
8740 8740 ltype = F_RDLCK;
8741 8741 break;
8742 8742 case WRITE_LT:
8743 8743 case WRITEW_LT:
8744 8744 if ((sp->rs_share_access
8745 8745 & OPEN4_SHARE_ACCESS_WRITE) == 0) {
8746 8746 rfs4_dbe_unlock(sp->rs_dbe);
8747 8747
8748 8748 return (NFS4ERR_OPENMODE);
8749 8749 }
8750 8750 ltype = F_WRLCK;
8751 8751 break;
8752 8752 }
8753 8753 } else
8754 8754 ltype = F_UNLCK;
8755 8755
8756 8756 flock.l_type = ltype;
8757 8757 flock.l_whence = 0; /* SEEK_SET */
8758 8758 flock.l_start = offset;
8759 8759 flock.l_len = length;
8760 8760 flock.l_sysid = sysid;
8761 8761 flock.l_pid = lsp->rls_locker->rl_pid;
8762 8762
8763 8763 /* Note that length4 is uint64_t but l_len and l_start are off64_t */
8764 8764 if (flock.l_len < 0 || flock.l_start < 0) {
8765 8765 rfs4_dbe_unlock(sp->rs_dbe);
8766 8766 return (NFS4ERR_INVAL);
8767 8767 }
8768 8768
8769 8769 /*
8770 8770 * N.B. FREAD has the same value as OPEN4_SHARE_ACCESS_READ and
8771 8771 * FWRITE has the same value as OPEN4_SHARE_ACCESS_WRITE.
8772 8772 */
8773 8773 flag = (int)sp->rs_share_access | F_REMOTELOCK;
8774 8774
8775 8775 vp = sp->rs_finfo->rf_vp;
8776 8776 VN_HOLD(vp);
8777 8777
8778 8778 /*
8779 8779 * We need to unlock sp before we call the underlying filesystem to
8780 8780 * acquire the file lock.
8781 8781 */
8782 8782 rfs4_dbe_unlock(sp->rs_dbe);
8783 8783
8784 8784 error = setlock(vp, &flock, flag, cred);
8785 8785
8786 8786 /*
8787 8787 * Make sure the file is still open. In a case the file was closed in
8788 8788 * the meantime, clean the lock we acquired using the setlock() call
8789 8789 * above, and return the appropriate error.
8790 8790 */
8791 8791 rfs4_dbe_lock(sp->rs_dbe);
8792 8792 if (sp->rs_closed == TRUE) {
8793 8793 cleanlocks(vp, lsp->rls_locker->rl_pid, sysid);
8794 8794 rfs4_dbe_unlock(sp->rs_dbe);
8795 8795
8796 8796 VN_RELE(vp);
8797 8797
8798 8798 return (NFS4ERR_OLD_STATEID);
8799 8799 }
8800 8800 rfs4_dbe_unlock(sp->rs_dbe);
8801 8801
8802 8802 VN_RELE(vp);
8803 8803
8804 8804 if (error == 0) {
8805 8805 rfs4_dbe_lock(lsp->rls_dbe);
8806 8806 next_stateid(&lsp->rls_lockid);
8807 8807 rfs4_dbe_unlock(lsp->rls_dbe);
8808 8808 }
8809 8809
8810 8810 /*
8811 8811 * N.B. We map error values to nfsv4 errors. This is differrent
8812 8812 * than puterrno4 routine.
8813 8813 */
8814 8814 switch (error) {
8815 8815 case 0:
8816 8816 status = NFS4_OK;
8817 8817 break;
8818 8818 case EAGAIN:
8819 8819 case EACCES: /* Old value */
8820 8820 /* Can only get here if op is OP_LOCK */
8821 8821 ASSERT(resop->resop == OP_LOCK);
8822 8822 lres = &resop->nfs_resop4_u.oplock;
8823 8823 status = NFS4ERR_DENIED;
8824 8824 if (lock_denied(&lres->LOCK4res_u.denied, &flock)
8825 8825 == NFS4ERR_EXPIRED)
8826 8826 goto retry;
8827 8827 break;
8828 8828 case ENOLCK:
8829 8829 status = NFS4ERR_DELAY;
8830 8830 break;
8831 8831 case EOVERFLOW:
8832 8832 status = NFS4ERR_INVAL;
8833 8833 break;
8834 8834 case EINVAL:
8835 8835 status = NFS4ERR_NOTSUPP;
8836 8836 break;
8837 8837 default:
8838 8838 status = NFS4ERR_SERVERFAULT;
8839 8839 break;
8840 8840 }
8841 8841
8842 8842 return (status);
8843 8843 }
8844 8844
8845 8845 /*ARGSUSED*/
8846 8846 void
8847 8847 rfs4_op_lock(nfs_argop4 *argop, nfs_resop4 *resop,
8848 8848 struct svc_req *req, struct compound_state *cs)
8849 8849 {
8850 8850 LOCK4args *args = &argop->nfs_argop4_u.oplock;
8851 8851 LOCK4res *resp = &resop->nfs_resop4_u.oplock;
8852 8852 nfsstat4 status;
8853 8853 stateid4 *stateid;
8854 8854 rfs4_lockowner_t *lo;
8855 8855 rfs4_client_t *cp;
8856 8856 rfs4_state_t *sp = NULL;
8857 8857 rfs4_lo_state_t *lsp = NULL;
8858 8858 bool_t ls_sw_held = FALSE;
8859 8859 bool_t create = TRUE;
8860 8860 bool_t lcreate = TRUE;
8861 8861 bool_t dup_lock = FALSE;
8862 8862 int rc;
8863 8863
8864 8864 DTRACE_NFSV4_2(op__lock__start, struct compound_state *, cs,
8865 8865 LOCK4args *, args);
8866 8866
8867 8867 if (cs->vp == NULL) {
8868 8868 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
8869 8869 DTRACE_NFSV4_2(op__lock__done, struct compound_state *,
8870 8870 cs, LOCK4res *, resp);
8871 8871 return;
8872 8872 }
8873 8873
8874 8874 if (args->locker.new_lock_owner) {
8875 8875 /* Create a new lockowner for this instance */
8876 8876 open_to_lock_owner4 *olo = &args->locker.locker4_u.open_owner;
8877 8877
8878 8878 NFS4_DEBUG(rfs4_debug, (CE_NOTE, "Creating new lock owner"));
8879 8879
8880 8880 stateid = &olo->open_stateid;
8881 8881 status = rfs4_get_state(stateid, &sp, RFS4_DBS_VALID);
8882 8882 if (status != NFS4_OK) {
8883 8883 NFS4_DEBUG(rfs4_debug,
8884 8884 (CE_NOTE, "Get state failed in lock %d", status));
8885 8885 *cs->statusp = resp->status = status;
8886 8886 DTRACE_NFSV4_2(op__lock__done, struct compound_state *,
8887 8887 cs, LOCK4res *, resp);
8888 8888 return;
8889 8889 }
8890 8890
8891 8891 /* Ensure specified filehandle matches */
8892 8892 if (cs->vp != sp->rs_finfo->rf_vp) {
8893 8893 rfs4_state_rele(sp);
8894 8894 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
8895 8895 DTRACE_NFSV4_2(op__lock__done, struct compound_state *,
8896 8896 cs, LOCK4res *, resp);
8897 8897 return;
8898 8898 }
8899 8899
8900 8900 /* hold off other access to open_owner while we tinker */
8901 8901 rfs4_sw_enter(&sp->rs_owner->ro_sw);
8902 8902
8903 8903 switch (rc = rfs4_check_stateid_seqid(sp, stateid)) {
8904 8904 case NFS4_CHECK_STATEID_OLD:
8905 8905 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
8906 8906 goto end;
8907 8907 case NFS4_CHECK_STATEID_BAD:
8908 8908 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
8909 8909 goto end;
8910 8910 case NFS4_CHECK_STATEID_EXPIRED:
8911 8911 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
8912 8912 goto end;
8913 8913 case NFS4_CHECK_STATEID_UNCONFIRMED:
8914 8914 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
8915 8915 goto end;
8916 8916 case NFS4_CHECK_STATEID_CLOSED:
8917 8917 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
8918 8918 goto end;
8919 8919 case NFS4_CHECK_STATEID_OKAY:
8920 8920 case NFS4_CHECK_STATEID_REPLAY:
8921 8921 switch (rfs4_check_olo_seqid(olo->open_seqid,
8922 8922 sp->rs_owner, resop)) {
8923 8923 case NFS4_CHKSEQ_OKAY:
8924 8924 if (rc == NFS4_CHECK_STATEID_OKAY)
8925 8925 break;
8926 8926 /*
8927 8927 * This is replayed stateid; if seqid
8928 8928 * matches next expected, then client
8929 8929 * is using wrong seqid.
8930 8930 */
8931 8931 /* FALLTHROUGH */
8932 8932 case NFS4_CHKSEQ_BAD:
8933 8933 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
8934 8934 goto end;
8935 8935 case NFS4_CHKSEQ_REPLAY:
8936 8936 /* This is a duplicate LOCK request */
8937 8937 dup_lock = TRUE;
8938 8938
8939 8939 /*
8940 8940 * For a duplicate we do not want to
8941 8941 * create a new lockowner as it should
8942 8942 * already exist.
8943 8943 * Turn off the lockowner create flag.
8944 8944 */
8945 8945 lcreate = FALSE;
8946 8946 }
8947 8947 break;
8948 8948 }
8949 8949
8950 8950 lo = rfs4_findlockowner(&olo->lock_owner, &lcreate);
8951 8951 if (lo == NULL) {
8952 8952 NFS4_DEBUG(rfs4_debug,
8953 8953 (CE_NOTE, "rfs4_op_lock: no lock owner"));
8954 8954 *cs->statusp = resp->status = NFS4ERR_RESOURCE;
8955 8955 goto end;
8956 8956 }
8957 8957
8958 8958 lsp = rfs4_findlo_state_by_owner(lo, sp, &create);
8959 8959 if (lsp == NULL) {
8960 8960 rfs4_update_lease(sp->rs_owner->ro_client);
8961 8961 /*
8962 8962 * Only update theh open_seqid if this is not
8963 8963 * a duplicate request
8964 8964 */
8965 8965 if (dup_lock == FALSE) {
8966 8966 rfs4_update_open_sequence(sp->rs_owner);
8967 8967 }
8968 8968
8969 8969 NFS4_DEBUG(rfs4_debug,
8970 8970 (CE_NOTE, "rfs4_op_lock: no state"));
8971 8971 *cs->statusp = resp->status = NFS4ERR_SERVERFAULT;
8972 8972 rfs4_update_open_resp(sp->rs_owner, resop, NULL);
8973 8973 rfs4_lockowner_rele(lo);
8974 8974 goto end;
8975 8975 }
8976 8976
8977 8977 /*
8978 8978 * This is the new_lock_owner branch and the client is
8979 8979 * supposed to be associating a new lock_owner with
8980 8980 * the open file at this point. If we find that a
8981 8981 * lock_owner/state association already exists and a
8982 8982 * successful LOCK request was returned to the client,
8983 8983 * an error is returned to the client since this is
8984 8984 * not appropriate. The client should be using the
8985 8985 * existing lock_owner branch.
8986 8986 */
8987 8987 if (dup_lock == FALSE && create == FALSE) {
8988 8988 if (lsp->rls_lock_completed == TRUE) {
8989 8989 *cs->statusp =
8990 8990 resp->status = NFS4ERR_BAD_SEQID;
8991 8991 rfs4_lockowner_rele(lo);
8992 8992 goto end;
8993 8993 }
8994 8994 }
8995 8995
8996 8996 rfs4_update_lease(sp->rs_owner->ro_client);
8997 8997
8998 8998 /*
8999 8999 * Only update theh open_seqid if this is not
9000 9000 * a duplicate request
9001 9001 */
9002 9002 if (dup_lock == FALSE) {
9003 9003 rfs4_update_open_sequence(sp->rs_owner);
9004 9004 }
9005 9005
9006 9006 /*
9007 9007 * If this is a duplicate lock request, just copy the
9008 9008 * previously saved reply and return.
9009 9009 */
9010 9010 if (dup_lock == TRUE) {
9011 9011 /* verify that lock_seqid's match */
9012 9012 if (lsp->rls_seqid != olo->lock_seqid) {
9013 9013 NFS4_DEBUG(rfs4_debug,
9014 9014 (CE_NOTE, "rfs4_op_lock: Dup-Lock seqid bad"
9015 9015 "lsp->seqid=%d old->seqid=%d",
9016 9016 lsp->rls_seqid, olo->lock_seqid));
9017 9017 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
9018 9018 } else {
9019 9019 rfs4_copy_reply(resop, &lsp->rls_reply);
9020 9020 /*
9021 9021 * Make sure to copy the just
9022 9022 * retrieved reply status into the
9023 9023 * overall compound status
9024 9024 */
9025 9025 *cs->statusp = resp->status;
9026 9026 }
9027 9027 rfs4_lockowner_rele(lo);
9028 9028 goto end;
9029 9029 }
9030 9030
9031 9031 rfs4_dbe_lock(lsp->rls_dbe);
9032 9032
9033 9033 /* Make sure to update the lock sequence id */
9034 9034 lsp->rls_seqid = olo->lock_seqid;
9035 9035
9036 9036 NFS4_DEBUG(rfs4_debug,
9037 9037 (CE_NOTE, "Lock seqid established as %d", lsp->rls_seqid));
9038 9038
9039 9039 /*
9040 9040 * This is used to signify the newly created lockowner
9041 9041 * stateid and its sequence number. The checks for
9042 9042 * sequence number and increment don't occur on the
9043 9043 * very first lock request for a lockowner.
9044 9044 */
9045 9045 lsp->rls_skip_seqid_check = TRUE;
9046 9046
9047 9047 /* hold off other access to lsp while we tinker */
9048 9048 rfs4_sw_enter(&lsp->rls_sw);
9049 9049 ls_sw_held = TRUE;
9050 9050
9051 9051 rfs4_dbe_unlock(lsp->rls_dbe);
9052 9052
9053 9053 rfs4_lockowner_rele(lo);
9054 9054 } else {
9055 9055 stateid = &args->locker.locker4_u.lock_owner.lock_stateid;
9056 9056 /* get lsp and hold the lock on the underlying file struct */
9057 9057 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE))
9058 9058 != NFS4_OK) {
9059 9059 *cs->statusp = resp->status = status;
9060 9060 DTRACE_NFSV4_2(op__lock__done, struct compound_state *,
9061 9061 cs, LOCK4res *, resp);
9062 9062 return;
9063 9063 }
9064 9064 create = FALSE; /* We didn't create lsp */
9065 9065
9066 9066 /* Ensure specified filehandle matches */
9067 9067 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) {
9068 9068 rfs4_lo_state_rele(lsp, TRUE);
9069 9069 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
9070 9070 DTRACE_NFSV4_2(op__lock__done, struct compound_state *,
9071 9071 cs, LOCK4res *, resp);
9072 9072 return;
9073 9073 }
9074 9074
9075 9075 /* hold off other access to lsp while we tinker */
9076 9076 rfs4_sw_enter(&lsp->rls_sw);
9077 9077 ls_sw_held = TRUE;
9078 9078
9079 9079 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) {
9080 9080 /*
9081 9081 * The stateid looks like it was okay (expected to be
9082 9082 * the next one)
9083 9083 */
9084 9084 case NFS4_CHECK_STATEID_OKAY:
9085 9085 /*
9086 9086 * The sequence id is now checked. Determine
9087 9087 * if this is a replay or if it is in the
9088 9088 * expected (next) sequence. In the case of a
9089 9089 * replay, there are two replay conditions
9090 9090 * that may occur. The first is the normal
9091 9091 * condition where a LOCK is done with a
9092 9092 * NFS4_OK response and the stateid is
9093 9093 * updated. That case is handled below when
9094 9094 * the stateid is identified as a REPLAY. The
9095 9095 * second is the case where an error is
9096 9096 * returned, like NFS4ERR_DENIED, and the
9097 9097 * sequence number is updated but the stateid
9098 9098 * is not updated. This second case is dealt
9099 9099 * with here. So it may seem odd that the
9100 9100 * stateid is okay but the sequence id is a
9101 9101 * replay but it is okay.
9102 9102 */
9103 9103 switch (rfs4_check_lock_seqid(
9104 9104 args->locker.locker4_u.lock_owner.lock_seqid,
9105 9105 lsp, resop)) {
9106 9106 case NFS4_CHKSEQ_REPLAY:
9107 9107 if (resp->status != NFS4_OK) {
9108 9108 /*
9109 9109 * Here is our replay and need
9110 9110 * to verify that the last
9111 9111 * response was an error.
9112 9112 */
9113 9113 *cs->statusp = resp->status;
9114 9114 goto end;
9115 9115 }
9116 9116 /*
9117 9117 * This is done since the sequence id
9118 9118 * looked like a replay but it didn't
9119 9119 * pass our check so a BAD_SEQID is
9120 9120 * returned as a result.
9121 9121 */
9122 9122 /*FALLTHROUGH*/
9123 9123 case NFS4_CHKSEQ_BAD:
9124 9124 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
9125 9125 goto end;
9126 9126 case NFS4_CHKSEQ_OKAY:
9127 9127 /* Everything looks okay move ahead */
9128 9128 break;
9129 9129 }
9130 9130 break;
9131 9131 case NFS4_CHECK_STATEID_OLD:
9132 9132 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
9133 9133 goto end;
9134 9134 case NFS4_CHECK_STATEID_BAD:
9135 9135 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
9136 9136 goto end;
9137 9137 case NFS4_CHECK_STATEID_EXPIRED:
9138 9138 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
9139 9139 goto end;
9140 9140 case NFS4_CHECK_STATEID_CLOSED:
9141 9141 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
9142 9142 goto end;
9143 9143 case NFS4_CHECK_STATEID_REPLAY:
9144 9144 switch (rfs4_check_lock_seqid(
9145 9145 args->locker.locker4_u.lock_owner.lock_seqid,
9146 9146 lsp, resop)) {
9147 9147 case NFS4_CHKSEQ_OKAY:
9148 9148 /*
9149 9149 * This is a replayed stateid; if
9150 9150 * seqid matches the next expected,
9151 9151 * then client is using wrong seqid.
9152 9152 */
9153 9153 case NFS4_CHKSEQ_BAD:
9154 9154 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
9155 9155 goto end;
9156 9156 case NFS4_CHKSEQ_REPLAY:
9157 9157 rfs4_update_lease(lsp->rls_locker->rl_client);
9158 9158 *cs->statusp = status = resp->status;
9159 9159 goto end;
9160 9160 }
9161 9161 break;
9162 9162 default:
9163 9163 ASSERT(FALSE);
9164 9164 break;
9165 9165 }
9166 9166
9167 9167 rfs4_update_lock_sequence(lsp);
9168 9168 rfs4_update_lease(lsp->rls_locker->rl_client);
9169 9169 }
9170 9170
9171 9171 /*
9172 9172 * NFS4 only allows locking on regular files, so
9173 9173 * verify type of object.
9174 9174 */
9175 9175 if (cs->vp->v_type != VREG) {
9176 9176 if (cs->vp->v_type == VDIR)
9177 9177 status = NFS4ERR_ISDIR;
9178 9178 else
9179 9179 status = NFS4ERR_INVAL;
9180 9180 goto out;
9181 9181 }
9182 9182
9183 9183 cp = lsp->rls_state->rs_owner->ro_client;
9184 9184
9185 9185 if (rfs4_clnt_in_grace(cp) && !args->reclaim) {
9186 9186 status = NFS4ERR_GRACE;
9187 9187 goto out;
9188 9188 }
9189 9189
9190 9190 if (rfs4_clnt_in_grace(cp) && args->reclaim && !cp->rc_can_reclaim) {
9191 9191 status = NFS4ERR_NO_GRACE;
9192 9192 goto out;
9193 9193 }
9194 9194
9195 9195 if (!rfs4_clnt_in_grace(cp) && args->reclaim) {
9196 9196 status = NFS4ERR_NO_GRACE;
9197 9197 goto out;
9198 9198 }
9199 9199
9200 9200 if (lsp->rls_state->rs_finfo->rf_dinfo.rd_dtype == OPEN_DELEGATE_WRITE)
9201 9201 cs->deleg = TRUE;
9202 9202
9203 9203 status = rfs4_do_lock(lsp, args->locktype,
9204 9204 args->offset, args->length, cs->cr, resop);
9205 9205
9206 9206 out:
9207 9207 lsp->rls_skip_seqid_check = FALSE;
9208 9208
9209 9209 *cs->statusp = resp->status = status;
9210 9210
9211 9211 if (status == NFS4_OK) {
9212 9212 resp->LOCK4res_u.lock_stateid = lsp->rls_lockid.stateid;
9213 9213 lsp->rls_lock_completed = TRUE;
9214 9214 }
9215 9215 /*
9216 9216 * Only update the "OPEN" response here if this was a new
9217 9217 * lock_owner
9218 9218 */
9219 9219 if (sp)
9220 9220 rfs4_update_open_resp(sp->rs_owner, resop, NULL);
9221 9221
9222 9222 rfs4_update_lock_resp(lsp, resop);
9223 9223
9224 9224 end:
9225 9225 if (lsp) {
9226 9226 if (ls_sw_held)
9227 9227 rfs4_sw_exit(&lsp->rls_sw);
9228 9228 /*
9229 9229 * If an sp obtained, then the lsp does not represent
9230 9230 * a lock on the file struct.
9231 9231 */
9232 9232 if (sp != NULL)
9233 9233 rfs4_lo_state_rele(lsp, FALSE);
9234 9234 else
9235 9235 rfs4_lo_state_rele(lsp, TRUE);
9236 9236 }
9237 9237 if (sp) {
9238 9238 rfs4_sw_exit(&sp->rs_owner->ro_sw);
9239 9239 rfs4_state_rele(sp);
9240 9240 }
9241 9241
9242 9242 DTRACE_NFSV4_2(op__lock__done, struct compound_state *, cs,
9243 9243 LOCK4res *, resp);
9244 9244 }
9245 9245
9246 9246 /* free function for LOCK/LOCKT */
9247 9247 static void
9248 9248 lock_denied_free(nfs_resop4 *resop)
9249 9249 {
9250 9250 LOCK4denied *dp = NULL;
9251 9251
9252 9252 switch (resop->resop) {
9253 9253 case OP_LOCK:
9254 9254 if (resop->nfs_resop4_u.oplock.status == NFS4ERR_DENIED)
9255 9255 dp = &resop->nfs_resop4_u.oplock.LOCK4res_u.denied;
9256 9256 break;
9257 9257 case OP_LOCKT:
9258 9258 if (resop->nfs_resop4_u.oplockt.status == NFS4ERR_DENIED)
9259 9259 dp = &resop->nfs_resop4_u.oplockt.denied;
9260 9260 break;
9261 9261 default:
9262 9262 break;
9263 9263 }
9264 9264
9265 9265 if (dp)
9266 9266 kmem_free(dp->owner.owner_val, dp->owner.owner_len);
9267 9267 }
9268 9268
9269 9269 /*ARGSUSED*/
9270 9270 void
9271 9271 rfs4_op_locku(nfs_argop4 *argop, nfs_resop4 *resop,
9272 9272 struct svc_req *req, struct compound_state *cs)
9273 9273 {
9274 9274 LOCKU4args *args = &argop->nfs_argop4_u.oplocku;
9275 9275 LOCKU4res *resp = &resop->nfs_resop4_u.oplocku;
9276 9276 nfsstat4 status;
9277 9277 stateid4 *stateid = &args->lock_stateid;
9278 9278 rfs4_lo_state_t *lsp;
9279 9279
9280 9280 DTRACE_NFSV4_2(op__locku__start, struct compound_state *, cs,
9281 9281 LOCKU4args *, args);
9282 9282
9283 9283 if (cs->vp == NULL) {
9284 9284 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
9285 9285 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs,
9286 9286 LOCKU4res *, resp);
9287 9287 return;
9288 9288 }
9289 9289
9290 9290 if ((status = rfs4_get_lo_state(stateid, &lsp, TRUE)) != NFS4_OK) {
9291 9291 *cs->statusp = resp->status = status;
9292 9292 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs,
9293 9293 LOCKU4res *, resp);
9294 9294 return;
9295 9295 }
9296 9296
9297 9297 /* Ensure specified filehandle matches */
9298 9298 if (cs->vp != lsp->rls_state->rs_finfo->rf_vp) {
9299 9299 rfs4_lo_state_rele(lsp, TRUE);
9300 9300 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
9301 9301 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs,
9302 9302 LOCKU4res *, resp);
9303 9303 return;
9304 9304 }
9305 9305
9306 9306 /* hold off other access to lsp while we tinker */
9307 9307 rfs4_sw_enter(&lsp->rls_sw);
9308 9308
9309 9309 switch (rfs4_check_lo_stateid_seqid(lsp, stateid)) {
9310 9310 case NFS4_CHECK_STATEID_OKAY:
9311 9311 if (rfs4_check_lock_seqid(args->seqid, lsp, resop)
9312 9312 != NFS4_CHKSEQ_OKAY) {
9313 9313 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
9314 9314 goto end;
9315 9315 }
9316 9316 break;
9317 9317 case NFS4_CHECK_STATEID_OLD:
9318 9318 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
9319 9319 goto end;
9320 9320 case NFS4_CHECK_STATEID_BAD:
9321 9321 *cs->statusp = resp->status = NFS4ERR_BAD_STATEID;
9322 9322 goto end;
9323 9323 case NFS4_CHECK_STATEID_EXPIRED:
9324 9324 *cs->statusp = resp->status = NFS4ERR_EXPIRED;
9325 9325 goto end;
9326 9326 case NFS4_CHECK_STATEID_CLOSED:
9327 9327 *cs->statusp = resp->status = NFS4ERR_OLD_STATEID;
9328 9328 goto end;
9329 9329 case NFS4_CHECK_STATEID_REPLAY:
9330 9330 switch (rfs4_check_lock_seqid(args->seqid, lsp, resop)) {
9331 9331 case NFS4_CHKSEQ_OKAY:
9332 9332 /*
9333 9333 * This is a replayed stateid; if
9334 9334 * seqid matches the next expected,
9335 9335 * then client is using wrong seqid.
9336 9336 */
9337 9337 case NFS4_CHKSEQ_BAD:
9338 9338 *cs->statusp = resp->status = NFS4ERR_BAD_SEQID;
9339 9339 goto end;
9340 9340 case NFS4_CHKSEQ_REPLAY:
9341 9341 rfs4_update_lease(lsp->rls_locker->rl_client);
9342 9342 *cs->statusp = status = resp->status;
9343 9343 goto end;
9344 9344 }
9345 9345 break;
9346 9346 default:
9347 9347 ASSERT(FALSE);
9348 9348 break;
9349 9349 }
9350 9350
9351 9351 rfs4_update_lock_sequence(lsp);
9352 9352 rfs4_update_lease(lsp->rls_locker->rl_client);
9353 9353
9354 9354 /*
9355 9355 * NFS4 only allows locking on regular files, so
9356 9356 * verify type of object.
9357 9357 */
9358 9358 if (cs->vp->v_type != VREG) {
9359 9359 if (cs->vp->v_type == VDIR)
9360 9360 status = NFS4ERR_ISDIR;
9361 9361 else
9362 9362 status = NFS4ERR_INVAL;
9363 9363 goto out;
9364 9364 }
9365 9365
9366 9366 if (rfs4_clnt_in_grace(lsp->rls_state->rs_owner->ro_client)) {
9367 9367 status = NFS4ERR_GRACE;
9368 9368 goto out;
9369 9369 }
9370 9370
9371 9371 status = rfs4_do_lock(lsp, args->locktype,
9372 9372 args->offset, args->length, cs->cr, resop);
9373 9373
9374 9374 out:
9375 9375 *cs->statusp = resp->status = status;
9376 9376
9377 9377 if (status == NFS4_OK)
9378 9378 resp->lock_stateid = lsp->rls_lockid.stateid;
9379 9379
9380 9380 rfs4_update_lock_resp(lsp, resop);
9381 9381
9382 9382 end:
9383 9383 rfs4_sw_exit(&lsp->rls_sw);
9384 9384 rfs4_lo_state_rele(lsp, TRUE);
9385 9385
9386 9386 DTRACE_NFSV4_2(op__locku__done, struct compound_state *, cs,
9387 9387 LOCKU4res *, resp);
9388 9388 }
9389 9389
9390 9390 /*
9391 9391 * LOCKT is a best effort routine, the client can not be guaranteed that
9392 9392 * the status return is still in effect by the time the reply is received.
9393 9393 * They are numerous race conditions in this routine, but we are not required
9394 9394 * and can not be accurate.
9395 9395 */
9396 9396 /*ARGSUSED*/
9397 9397 void
9398 9398 rfs4_op_lockt(nfs_argop4 *argop, nfs_resop4 *resop,
9399 9399 struct svc_req *req, struct compound_state *cs)
9400 9400 {
9401 9401 LOCKT4args *args = &argop->nfs_argop4_u.oplockt;
9402 9402 LOCKT4res *resp = &resop->nfs_resop4_u.oplockt;
9403 9403 rfs4_lockowner_t *lo;
9404 9404 rfs4_client_t *cp;
9405 9405 bool_t create = FALSE;
9406 9406 struct flock64 flk;
9407 9407 int error;
9408 9408 int flag = FREAD | FWRITE;
9409 9409 int ltype;
9410 9410 length4 posix_length;
9411 9411 sysid_t sysid;
9412 9412 pid_t pid;
9413 9413
9414 9414 DTRACE_NFSV4_2(op__lockt__start, struct compound_state *, cs,
9415 9415 LOCKT4args *, args);
9416 9416
9417 9417 if (cs->vp == NULL) {
9418 9418 *cs->statusp = resp->status = NFS4ERR_NOFILEHANDLE;
9419 9419 goto out;
9420 9420 }
9421 9421
9422 9422 /*
9423 9423 * NFS4 only allows locking on regular files, so
9424 9424 * verify type of object.
9425 9425 */
9426 9426 if (cs->vp->v_type != VREG) {
9427 9427 if (cs->vp->v_type == VDIR)
9428 9428 *cs->statusp = resp->status = NFS4ERR_ISDIR;
9429 9429 else
9430 9430 *cs->statusp = resp->status = NFS4ERR_INVAL;
9431 9431 goto out;
9432 9432 }
9433 9433
9434 9434 /*
9435 9435 * Check out the clientid to ensure the server knows about it
9436 9436 * so that we correctly inform the client of a server reboot.
9437 9437 */
9438 9438 if ((cp = rfs4_findclient_by_id(args->owner.clientid, FALSE))
9439 9439 == NULL) {
9440 9440 *cs->statusp = resp->status =
9441 9441 rfs4_check_clientid(&args->owner.clientid, 0);
9442 9442 goto out;
9443 9443 }
9444 9444 if (rfs4_lease_expired(cp)) {
9445 9445 rfs4_client_close(cp);
9446 9446 /*
9447 9447 * Protocol doesn't allow returning NFS4ERR_STALE as
9448 9448 * other operations do on this check so STALE_CLIENTID
9449 9449 * is returned instead
9450 9450 */
9451 9451 *cs->statusp = resp->status = NFS4ERR_STALE_CLIENTID;
9452 9452 goto out;
9453 9453 }
9454 9454
9455 9455 if (rfs4_clnt_in_grace(cp) && !(cp->rc_can_reclaim)) {
9456 9456 *cs->statusp = resp->status = NFS4ERR_GRACE;
9457 9457 rfs4_client_rele(cp);
9458 9458 goto out;
9459 9459 }
9460 9460 rfs4_client_rele(cp);
9461 9461
9462 9462 resp->status = NFS4_OK;
9463 9463
9464 9464 switch (args->locktype) {
9465 9465 case READ_LT:
9466 9466 case READW_LT:
9467 9467 ltype = F_RDLCK;
9468 9468 break;
9469 9469 case WRITE_LT:
9470 9470 case WRITEW_LT:
9471 9471 ltype = F_WRLCK;
9472 9472 break;
9473 9473 }
9474 9474
9475 9475 posix_length = args->length;
9476 9476 /* Check for zero length. To lock to end of file use all ones for V4 */
9477 9477 if (posix_length == 0) {
9478 9478 *cs->statusp = resp->status = NFS4ERR_INVAL;
9479 9479 goto out;
9480 9480 } else if (posix_length == (length4)(~0)) {
9481 9481 posix_length = 0; /* Posix to end of file */
9482 9482 }
9483 9483
9484 9484 /* Find or create a lockowner */
9485 9485 lo = rfs4_findlockowner(&args->owner, &create);
9486 9486
9487 9487 if (lo) {
9488 9488 pid = lo->rl_pid;
9489 9489 if ((resp->status =
9490 9490 rfs4_client_sysid(lo->rl_client, &sysid)) != NFS4_OK)
9491 9491 goto err;
9492 9492 } else {
9493 9493 pid = 0;
9494 9494 sysid = lockt_sysid;
9495 9495 }
9496 9496 retry:
9497 9497 flk.l_type = ltype;
9498 9498 flk.l_whence = 0; /* SEEK_SET */
9499 9499 flk.l_start = args->offset;
9500 9500 flk.l_len = posix_length;
9501 9501 flk.l_sysid = sysid;
9502 9502 flk.l_pid = pid;
9503 9503 flag |= F_REMOTELOCK;
9504 9504
9505 9505 LOCK_PRINT(rfs4_debug, "rfs4_op_lockt", F_GETLK, &flk);
9506 9506
9507 9507 /* Note that length4 is uint64_t but l_len and l_start are off64_t */
9508 9508 if (flk.l_len < 0 || flk.l_start < 0) {
9509 9509 resp->status = NFS4ERR_INVAL;
9510 9510 goto err;
9511 9511 }
9512 9512 error = VOP_FRLOCK(cs->vp, F_GETLK, &flk, flag, (u_offset_t)0,
9513 9513 NULL, cs->cr, NULL);
9514 9514
9515 9515 /*
9516 9516 * N.B. We map error values to nfsv4 errors. This is differrent
9517 9517 * than puterrno4 routine.
9518 9518 */
9519 9519 switch (error) {
9520 9520 case 0:
9521 9521 if (flk.l_type == F_UNLCK)
9522 9522 resp->status = NFS4_OK;
9523 9523 else {
9524 9524 if (lock_denied(&resp->denied, &flk) == NFS4ERR_EXPIRED)
9525 9525 goto retry;
9526 9526 resp->status = NFS4ERR_DENIED;
9527 9527 }
9528 9528 break;
9529 9529 case EOVERFLOW:
9530 9530 resp->status = NFS4ERR_INVAL;
9531 9531 break;
9532 9532 case EINVAL:
9533 9533 resp->status = NFS4ERR_NOTSUPP;
9534 9534 break;
9535 9535 default:
9536 9536 cmn_err(CE_WARN, "rfs4_op_lockt: unexpected errno (%d)",
9537 9537 error);
9538 9538 resp->status = NFS4ERR_SERVERFAULT;
9539 9539 break;
9540 9540 }
9541 9541
9542 9542 err:
9543 9543 if (lo)
9544 9544 rfs4_lockowner_rele(lo);
9545 9545 *cs->statusp = resp->status;
9546 9546 out:
9547 9547 DTRACE_NFSV4_2(op__lockt__done, struct compound_state *, cs,
9548 9548 LOCKT4res *, resp);
9549 9549 }
9550 9550
9551 9551 int
9552 9552 rfs4_share(rfs4_state_t *sp, uint32_t access, uint32_t deny)
9553 9553 {
9554 9554 int err;
9555 9555 int cmd;
9556 9556 vnode_t *vp;
9557 9557 struct shrlock shr;
9558 9558 struct shr_locowner shr_loco;
9559 9559 int fflags = 0;
9560 9560
9561 9561 ASSERT(rfs4_dbe_islocked(sp->rs_dbe));
9562 9562 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID);
9563 9563
9564 9564 if (sp->rs_closed)
9565 9565 return (NFS4ERR_OLD_STATEID);
9566 9566
9567 9567 vp = sp->rs_finfo->rf_vp;
9568 9568 ASSERT(vp);
9569 9569
9570 9570 shr.s_access = shr.s_deny = 0;
9571 9571
9572 9572 if (access & OPEN4_SHARE_ACCESS_READ) {
9573 9573 fflags |= FREAD;
9574 9574 shr.s_access |= F_RDACC;
9575 9575 }
9576 9576 if (access & OPEN4_SHARE_ACCESS_WRITE) {
9577 9577 fflags |= FWRITE;
9578 9578 shr.s_access |= F_WRACC;
9579 9579 }
9580 9580 ASSERT(shr.s_access);
9581 9581
9582 9582 if (deny & OPEN4_SHARE_DENY_READ)
9583 9583 shr.s_deny |= F_RDDNY;
9584 9584 if (deny & OPEN4_SHARE_DENY_WRITE)
9585 9585 shr.s_deny |= F_WRDNY;
9586 9586
9587 9587 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe);
9588 9588 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt;
9589 9589 shr_loco.sl_pid = shr.s_pid;
9590 9590 shr_loco.sl_id = shr.s_sysid;
9591 9591 shr.s_owner = (caddr_t)&shr_loco;
9592 9592 shr.s_own_len = sizeof (shr_loco);
9593 9593
9594 9594 cmd = nbl_need_check(vp) ? F_SHARE_NBMAND : F_SHARE;
9595 9595
9596 9596 err = VOP_SHRLOCK(vp, cmd, &shr, fflags, CRED(), NULL);
9597 9597 if (err != 0) {
9598 9598 if (err == EAGAIN)
9599 9599 err = NFS4ERR_SHARE_DENIED;
9600 9600 else
9601 9601 err = puterrno4(err);
9602 9602 return (err);
9603 9603 }
9604 9604
9605 9605 sp->rs_share_access |= access;
9606 9606 sp->rs_share_deny |= deny;
9607 9607
9608 9608 return (0);
9609 9609 }
9610 9610
9611 9611 int
9612 9612 rfs4_unshare(rfs4_state_t *sp)
9613 9613 {
9614 9614 int err;
9615 9615 struct shrlock shr;
9616 9616 struct shr_locowner shr_loco;
9617 9617
9618 9618 ASSERT(rfs4_dbe_islocked(sp->rs_dbe));
9619 9619
9620 9620 if (sp->rs_closed || sp->rs_share_access == 0)
9621 9621 return (0);
9622 9622
9623 9623 ASSERT(sp->rs_owner->ro_client->rc_sysidt != LM_NOSYSID);
9624 9624 ASSERT(sp->rs_finfo->rf_vp);
9625 9625
9626 9626 shr.s_access = shr.s_deny = 0;
9627 9627 shr.s_pid = rfs4_dbe_getid(sp->rs_owner->ro_dbe);
9628 9628 shr.s_sysid = sp->rs_owner->ro_client->rc_sysidt;
9629 9629 shr_loco.sl_pid = shr.s_pid;
9630 9630 shr_loco.sl_id = shr.s_sysid;
9631 9631 shr.s_owner = (caddr_t)&shr_loco;
9632 9632 shr.s_own_len = sizeof (shr_loco);
9633 9633
9634 9634 err = VOP_SHRLOCK(sp->rs_finfo->rf_vp, F_UNSHARE, &shr, 0, CRED(),
9635 9635 NULL);
9636 9636 if (err != 0) {
9637 9637 err = puterrno4(err);
9638 9638 return (err);
9639 9639 }
9640 9640
9641 9641 sp->rs_share_access = 0;
9642 9642 sp->rs_share_deny = 0;
9643 9643
9644 9644 return (0);
9645 9645
9646 9646 }
9647 9647
9648 9648 static int
9649 9649 rdma_setup_read_data4(READ4args *args, READ4res *rok)
9650 9650 {
9651 9651 struct clist *wcl;
9652 9652 count4 count = rok->data_len;
9653 9653 int wlist_len;
9654 9654
9655 9655 wcl = args->wlist;
9656 9656 if (rdma_setup_read_chunks(wcl, count, &wlist_len) == FALSE) {
9657 9657 return (FALSE);
9658 9658 }
9659 9659 wcl = args->wlist;
9660 9660 rok->wlist_len = wlist_len;
9661 9661 rok->wlist = wcl;
9662 9662 return (TRUE);
9663 9663 }
9664 9664
9665 9665 /* tunable to disable server referrals */
9666 9666 int rfs4_no_referrals = 0;
9667 9667
9668 9668 /*
9669 9669 * Find an NFS record in reparse point data.
9670 9670 * Returns 0 for success and <0 or an errno value on failure.
9671 9671 */
9672 9672 int
9673 9673 vn_find_nfs_record(vnode_t *vp, nvlist_t **nvlp, char **svcp, char **datap)
9674 9674 {
9675 9675 int err;
9676 9676 char *stype, *val;
9677 9677 nvlist_t *nvl;
9678 9678 nvpair_t *curr;
9679 9679
9680 9680 if ((nvl = reparse_init()) == NULL)
9681 9681 return (-1);
9682 9682
9683 9683 if ((err = reparse_vnode_parse(vp, nvl)) != 0) {
9684 9684 reparse_free(nvl);
9685 9685 return (err);
9686 9686 }
9687 9687
9688 9688 curr = NULL;
9689 9689 while ((curr = nvlist_next_nvpair(nvl, curr)) != NULL) {
9690 9690 if ((stype = nvpair_name(curr)) == NULL) {
9691 9691 reparse_free(nvl);
9692 9692 return (-2);
9693 9693 }
9694 9694 if (strncasecmp(stype, "NFS", 3) == 0)
9695 9695 break;
9696 9696 }
9697 9697
9698 9698 if ((curr == NULL) ||
9699 9699 (nvpair_value_string(curr, &val))) {
9700 9700 reparse_free(nvl);
9701 9701 return (-3);
9702 9702 }
9703 9703 *nvlp = nvl;
9704 9704 *svcp = stype;
9705 9705 *datap = val;
9706 9706 return (0);
9707 9707 }
9708 9708
9709 9709 int
9710 9710 vn_is_nfs_reparse(vnode_t *vp, cred_t *cr)
9711 9711 {
9712 9712 nvlist_t *nvl;
9713 9713 char *s, *d;
9714 9714
9715 9715 if (rfs4_no_referrals != 0)
9716 9716 return (B_FALSE);
9717 9717
9718 9718 if (vn_is_reparse(vp, cr, NULL) == B_FALSE)
9719 9719 return (B_FALSE);
9720 9720
9721 9721 if (vn_find_nfs_record(vp, &nvl, &s, &d) != 0)
9722 9722 return (B_FALSE);
9723 9723
9724 9724 reparse_free(nvl);
9725 9725
9726 9726 return (B_TRUE);
9727 9727 }
9728 9728
9729 9729 /*
9730 9730 * There is a user-level copy of this routine in ref_subr.c.
9731 9731 * Changes should be kept in sync.
9732 9732 */
9733 9733 static int
9734 9734 nfs4_create_components(char *path, component4 *comp4)
9735 9735 {
9736 9736 int slen, plen, ncomp;
9737 9737 char *ori_path, *nxtc, buf[MAXNAMELEN];
9738 9738
9739 9739 if (path == NULL)
9740 9740 return (0);
9741 9741
9742 9742 plen = strlen(path) + 1; /* include the terminator */
9743 9743 ori_path = path;
9744 9744 ncomp = 0;
9745 9745
9746 9746 /* count number of components in the path */
9747 9747 for (nxtc = path; nxtc < ori_path + plen; nxtc++) {
9748 9748 if (*nxtc == '/' || *nxtc == '\0' || *nxtc == '\n') {
9749 9749 if ((slen = nxtc - path) == 0) {
9750 9750 path = nxtc + 1;
9751 9751 continue;
9752 9752 }
9753 9753
9754 9754 if (comp4 != NULL) {
9755 9755 bcopy(path, buf, slen);
9756 9756 buf[slen] = '\0';
9757 9757 (void) str_to_utf8(buf, &comp4[ncomp]);
9758 9758 }
9759 9759
9760 9760 ncomp++; /* 1 valid component */
9761 9761 path = nxtc + 1;
9762 9762 }
9763 9763 if (*nxtc == '\0' || *nxtc == '\n')
9764 9764 break;
9765 9765 }
9766 9766
9767 9767 return (ncomp);
9768 9768 }
9769 9769
9770 9770 /*
9771 9771 * There is a user-level copy of this routine in ref_subr.c.
9772 9772 * Changes should be kept in sync.
9773 9773 */
9774 9774 static int
9775 9775 make_pathname4(char *path, pathname4 *pathname)
9776 9776 {
9777 9777 int ncomp;
9778 9778 component4 *comp4;
9779 9779
9780 9780 if (pathname == NULL)
9781 9781 return (0);
9782 9782
9783 9783 if (path == NULL) {
9784 9784 pathname->pathname4_val = NULL;
9785 9785 pathname->pathname4_len = 0;
9786 9786 return (0);
9787 9787 }
9788 9788
9789 9789 /* count number of components to alloc buffer */
9790 9790 if ((ncomp = nfs4_create_components(path, NULL)) == 0) {
9791 9791 pathname->pathname4_val = NULL;
9792 9792 pathname->pathname4_len = 0;
9793 9793 return (0);
9794 9794 }
9795 9795 comp4 = kmem_zalloc(ncomp * sizeof (component4), KM_SLEEP);
9796 9796
9797 9797 /* copy components into allocated buffer */
9798 9798 ncomp = nfs4_create_components(path, comp4);
9799 9799
9800 9800 pathname->pathname4_val = comp4;
9801 9801 pathname->pathname4_len = ncomp;
9802 9802
9803 9803 return (ncomp);
9804 9804 }
9805 9805
9806 9806 #define xdr_fs_locations4 xdr_fattr4_fs_locations
9807 9807
9808 9808 fs_locations4 *
9809 9809 fetch_referral(vnode_t *vp, cred_t *cr)
9810 9810 {
9811 9811 nvlist_t *nvl;
9812 9812 char *stype, *sdata;
9813 9813 fs_locations4 *result;
9814 9814 char buf[1024];
9815 9815 size_t bufsize;
9816 9816 XDR xdr;
9817 9817 int err;
9818 9818
9819 9819 /*
9820 9820 * Check attrs to ensure it's a reparse point
9821 9821 */
9822 9822 if (vn_is_reparse(vp, cr, NULL) == B_FALSE)
9823 9823 return (NULL);
9824 9824
9825 9825 /*
9826 9826 * Look for an NFS record and get the type and data
9827 9827 */
9828 9828 if (vn_find_nfs_record(vp, &nvl, &stype, &sdata) != 0)
9829 9829 return (NULL);
9830 9830
9831 9831 /*
9832 9832 * With the type and data, upcall to get the referral
9833 9833 */
9834 9834 bufsize = sizeof (buf);
9835 9835 bzero(buf, sizeof (buf));
9836 9836 err = reparse_kderef((const char *)stype, (const char *)sdata,
9837 9837 buf, &bufsize);
9838 9838 reparse_free(nvl);
9839 9839
9840 9840 DTRACE_PROBE4(nfs4serv__func__referral__upcall,
9841 9841 char *, stype, char *, sdata, char *, buf, int, err);
9842 9842 if (err) {
9843 9843 cmn_err(CE_NOTE,
9844 9844 "reparsed daemon not running: unable to get referral (%d)",
9845 9845 err);
9846 9846 return (NULL);
9847 9847 }
9848 9848
9849 9849 /*
9850 9850 * We get an XDR'ed record back from the kderef call
9851 9851 */
9852 9852 xdrmem_create(&xdr, buf, bufsize, XDR_DECODE);
9853 9853 result = kmem_alloc(sizeof (fs_locations4), KM_SLEEP);
9854 9854 err = xdr_fs_locations4(&xdr, result);
9855 9855 XDR_DESTROY(&xdr);
9856 9856 if (err != TRUE) {
9857 9857 DTRACE_PROBE1(nfs4serv__func__referral__upcall__xdrfail,
9858 9858 int, err);
9859 9859 return (NULL);
9860 9860 }
9861 9861
9862 9862 /*
9863 9863 * Look at path to recover fs_root, ignoring the leading '/'
9864 9864 */
9865 9865 (void) make_pathname4(vp->v_path, &result->fs_root);
9866 9866
9867 9867 return (result);
9868 9868 }
9869 9869
9870 9870 char *
9871 9871 build_symlink(vnode_t *vp, cred_t *cr, size_t *strsz)
9872 9872 {
9873 9873 fs_locations4 *fsl;
9874 9874 fs_location4 *fs;
9875 9875 char *server, *path, *symbuf;
9876 9876 static char *prefix = "/net/";
9877 9877 int i, size, npaths;
9878 9878 uint_t len;
9879 9879
9880 9880 /* Get the referral */
9881 9881 if ((fsl = fetch_referral(vp, cr)) == NULL)
9882 9882 return (NULL);
9883 9883
9884 9884 /* Deal with only the first location and first server */
9885 9885 fs = &fsl->locations_val[0];
9886 9886 server = utf8_to_str(&fs->server_val[0], &len, NULL);
9887 9887 if (server == NULL) {
9888 9888 rfs4_free_fs_locations4(fsl);
9889 9889 kmem_free(fsl, sizeof (fs_locations4));
9890 9890 return (NULL);
9891 9891 }
9892 9892
9893 9893 /* Figure out size for "/net/" + host + /path/path/path + NULL */
9894 9894 size = strlen(prefix) + len;
9895 9895 for (i = 0; i < fs->rootpath.pathname4_len; i++)
9896 9896 size += fs->rootpath.pathname4_val[i].utf8string_len + 1;
9897 9897
9898 9898 /* Allocate the symlink buffer and fill it */
9899 9899 symbuf = kmem_zalloc(size, KM_SLEEP);
9900 9900 (void) strcat(symbuf, prefix);
9901 9901 (void) strcat(symbuf, server);
9902 9902 kmem_free(server, len);
9903 9903
9904 9904 npaths = 0;
9905 9905 for (i = 0; i < fs->rootpath.pathname4_len; i++) {
9906 9906 path = utf8_to_str(&fs->rootpath.pathname4_val[i], &len, NULL);
9907 9907 if (path == NULL)
9908 9908 continue;
9909 9909 (void) strcat(symbuf, "/");
9910 9910 (void) strcat(symbuf, path);
9911 9911 npaths++;
9912 9912 kmem_free(path, len);
9913 9913 }
9914 9914
9915 9915 rfs4_free_fs_locations4(fsl);
9916 9916 kmem_free(fsl, sizeof (fs_locations4));
9917 9917
9918 9918 if (strsz != NULL)
9919 9919 *strsz = size;
9920 9920 return (symbuf);
9921 9921 }
9922 9922
9923 9923 /*
9924 9924 * Check to see if we have a downrev Solaris client, so that we
9925 9925 * can send it a symlink instead of a referral.
9926 9926 */
9927 9927 int
9928 9928 client_is_downrev(struct svc_req *req)
9929 9929 {
9930 9930 struct sockaddr *ca;
9931 9931 rfs4_clntip_t *ci;
9932 9932 bool_t create = FALSE;
9933 9933 int is_downrev;
9934 9934
9935 9935 ca = (struct sockaddr *)svc_getrpccaller(req->rq_xprt)->buf;
9936 9936 ASSERT(ca);
9937 9937 ci = rfs4_find_clntip(ca, &create);
9938 9938 if (ci == NULL)
9939 9939 return (0);
9940 9940 is_downrev = ci->ri_no_referrals;
9941 9941 rfs4_dbe_rele(ci->ri_dbe);
9942 9942 return (is_downrev);
9943 9943 }
9944 9944
9945 9945 /*
9946 9946 * Do the main work of handling HA-NFSv4 Resource Group failover on
9947 9947 * Sun Cluster.
9948 9948 * We need to detect whether any RG admin paths have been added or removed,
9949 9949 * and adjust resources accordingly.
9950 9950 * Currently we're using a very inefficient algorithm, ~ 2 * O(n**2). In
9951 9951 * order to scale, the list and array of paths need to be held in more
9952 9952 * suitable data structures.
9953 9953 */
9954 9954 static void
9955 9955 hanfsv4_failover(nfs4_srv_t *nsrv4)
9956 9956 {
9957 9957 int i, start_grace, numadded_paths = 0;
9958 9958 char **added_paths = NULL;
9959 9959 rfs4_dss_path_t *dss_path;
9960 9960
9961 9961 /*
9962 9962 * Note: currently, dss_pathlist cannot be NULL, since
9963 9963 * it will always include an entry for NFS4_DSS_VAR_DIR. If we
9964 9964 * make the latter dynamically specified too, the following will
9965 9965 * need to be adjusted.
9966 9966 */
9967 9967
9968 9968 /*
9969 9969 * First, look for removed paths: RGs that have been failed-over
9970 9970 * away from this node.
9971 9971 * Walk the "currently-serving" dss_pathlist and, for each
9972 9972 * path, check if it is on the "passed-in" rfs4_dss_newpaths array
9973 9973 * from nfsd. If not, that RG path has been removed.
9974 9974 *
9975 9975 * Note that nfsd has sorted rfs4_dss_newpaths for us, and removed
9976 9976 * any duplicates.
9977 9977 */
9978 9978 dss_path = nsrv4->dss_pathlist;
9979 9979 do {
9980 9980 int found = 0;
9981 9981 char *path = dss_path->path;
9982 9982
9983 9983 /* used only for non-HA so may not be removed */
9984 9984 if (strcmp(path, NFS4_DSS_VAR_DIR) == 0) {
9985 9985 dss_path = dss_path->next;
9986 9986 continue;
9987 9987 }
9988 9988
9989 9989 for (i = 0; i < rfs4_dss_numnewpaths; i++) {
9990 9990 int cmpret;
9991 9991 char *newpath = rfs4_dss_newpaths[i];
9992 9992
9993 9993 /*
9994 9994 * Since nfsd has sorted rfs4_dss_newpaths for us,
9995 9995 * once the return from strcmp is negative we know
9996 9996 * we've passed the point where "path" should be,
9997 9997 * and can stop searching: "path" has been removed.
9998 9998 */
9999 9999 cmpret = strcmp(path, newpath);
10000 10000 if (cmpret < 0)
10001 10001 break;
10002 10002 if (cmpret == 0) {
10003 10003 found = 1;
10004 10004 break;
10005 10005 }
10006 10006 }
10007 10007
10008 10008 if (found == 0) {
10009 10009 unsigned index = dss_path->index;
10010 10010 rfs4_servinst_t *sip = dss_path->sip;
10011 10011 rfs4_dss_path_t *path_next = dss_path->next;
10012 10012
10013 10013 /*
10014 10014 * This path has been removed.
10015 10015 * We must clear out the servinst reference to
10016 10016 * it, since it's now owned by another
10017 10017 * node: we should not attempt to touch it.
10018 10018 */
10019 10019 ASSERT(dss_path == sip->dss_paths[index]);
10020 10020 sip->dss_paths[index] = NULL;
10021 10021
10022 10022 /* remove from "currently-serving" list, and destroy */
10023 10023 remque(dss_path);
10024 10024 /* allow for NUL */
10025 10025 kmem_free(dss_path->path, strlen(dss_path->path) + 1);
10026 10026 kmem_free(dss_path, sizeof (rfs4_dss_path_t));
10027 10027
10028 10028 dss_path = path_next;
10029 10029 } else {
10030 10030 /* path was found; not removed */
10031 10031 dss_path = dss_path->next;
10032 10032 }
10033 10033 } while (dss_path != nsrv4->dss_pathlist);
10034 10034
10035 10035 /*
10036 10036 * Now, look for added paths: RGs that have been failed-over
10037 10037 * to this node.
10038 10038 * Walk the "passed-in" rfs4_dss_newpaths array from nfsd and,
10039 10039 * for each path, check if it is on the "currently-serving"
10040 10040 * dss_pathlist. If not, that RG path has been added.
10041 10041 *
10042 10042 * Note: we don't do duplicate detection here; nfsd does that for us.
10043 10043 *
10044 10044 * Note: numadded_paths <= rfs4_dss_numnewpaths, which gives us
10045 10045 * an upper bound for the size needed for added_paths[numadded_paths].
10046 10046 */
10047 10047
10048 10048 /* probably more space than we need, but guaranteed to be enough */
10049 10049 if (rfs4_dss_numnewpaths > 0) {
10050 10050 size_t sz = rfs4_dss_numnewpaths * sizeof (char *);
10051 10051 added_paths = kmem_zalloc(sz, KM_SLEEP);
10052 10052 }
10053 10053
10054 10054 /* walk the "passed-in" rfs4_dss_newpaths array from nfsd */
10055 10055 for (i = 0; i < rfs4_dss_numnewpaths; i++) {
10056 10056 int found = 0;
10057 10057 char *newpath = rfs4_dss_newpaths[i];
10058 10058
10059 10059 dss_path = nsrv4->dss_pathlist;
10060 10060 do {
10061 10061 char *path = dss_path->path;
10062 10062
10063 10063 /* used only for non-HA */
10064 10064 if (strcmp(path, NFS4_DSS_VAR_DIR) == 0) {
10065 10065 dss_path = dss_path->next;
10066 10066 continue;
10067 10067 }
10068 10068
10069 10069 if (strncmp(path, newpath, strlen(path)) == 0) {
10070 10070 found = 1;
10071 10071 break;
10072 10072 }
10073 10073
10074 10074 dss_path = dss_path->next;
10075 10075 } while (dss_path != nsrv4->dss_pathlist);
10076 10076
10077 10077 if (found == 0) {
10078 10078 added_paths[numadded_paths] = newpath;
10079 10079 numadded_paths++;
10080 10080 }
10081 10081 }
10082 10082
10083 10083 /* did we find any added paths? */
10084 10084 if (numadded_paths > 0) {
10085 10085
10086 10086 /* create a new server instance, and start its grace period */
10087 10087 start_grace = 1;
10088 10088 /* CSTYLED */
10089 10089 rfs4_servinst_create(nsrv4, start_grace, numadded_paths, added_paths);
10090 10090
10091 10091 /* read in the stable storage state from these paths */
10092 10092 rfs4_dss_readstate(nsrv4, numadded_paths, added_paths);
10093 10093
10094 10094 /*
10095 10095 * Multiple failovers during a grace period will cause
10096 10096 * clients of the same resource group to be partitioned
10097 10097 * into different server instances, with different
10098 10098 * grace periods. Since clients of the same resource
10099 10099 * group must be subject to the same grace period,
10100 10100 * we need to reset all currently active grace periods.
10101 10101 */
10102 10102 rfs4_grace_reset_all(nsrv4);
10103 10103 }
10104 10104
10105 10105 if (rfs4_dss_numnewpaths > 0)
10106 10106 kmem_free(added_paths, rfs4_dss_numnewpaths * sizeof (char *));
10107 10107 }
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