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ZoL PR 9145
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--- old/usr/src/uts/common/fs/zfs/zfs_replay.c
+++ new/usr/src/uts/common/fs/zfs/zfs_replay.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 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 23 * Copyright (c) 2013, 2015 by Delphix. All rights reserved.
24 24 */
25 25
26 26 #include <sys/types.h>
27 27 #include <sys/param.h>
28 28 #include <sys/systm.h>
29 29 #include <sys/sysmacros.h>
30 30 #include <sys/cmn_err.h>
31 31 #include <sys/kmem.h>
32 32 #include <sys/thread.h>
33 33 #include <sys/file.h>
34 34 #include <sys/fcntl.h>
35 35 #include <sys/vfs.h>
36 36 #include <sys/fs/zfs.h>
37 37 #include <sys/zfs_znode.h>
38 38 #include <sys/zfs_dir.h>
39 39 #include <sys/zfs_acl.h>
40 40 #include <sys/zfs_fuid.h>
41 41 #include <sys/spa.h>
42 42 #include <sys/zil.h>
43 43 #include <sys/byteorder.h>
44 44 #include <sys/stat.h>
45 45 #include <sys/mode.h>
46 46 #include <sys/acl.h>
47 47 #include <sys/atomic.h>
48 48 #include <sys/cred.h>
49 49
50 50 /*
51 51 * Functions to replay ZFS intent log (ZIL) records
52 52 * The functions are called through a function vector (zfs_replay_vector)
53 53 * which is indexed by the transaction type.
54 54 */
55 55
56 56 static void
57 57 zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
58 58 uint64_t uid, uint64_t gid, uint64_t rdev, uint64_t nodeid)
59 59 {
60 60 bzero(vap, sizeof (*vap));
61 61 vap->va_mask = (uint_t)mask;
62 62 vap->va_type = IFTOVT(mode);
63 63 vap->va_mode = mode & MODEMASK;
64 64 vap->va_uid = (uid_t)(IS_EPHEMERAL(uid)) ? -1 : uid;
65 65 vap->va_gid = (gid_t)(IS_EPHEMERAL(gid)) ? -1 : gid;
66 66 vap->va_rdev = zfs_cmpldev(rdev);
67 67 vap->va_nodeid = nodeid;
68 68 }
69 69
70 70 /* ARGSUSED */
71 71 static int
72 72 zfs_replay_error(void *arg1, void *arg2, boolean_t byteswap)
73 73 {
74 74 return (SET_ERROR(ENOTSUP));
75 75 }
76 76
77 77 static void
78 78 zfs_replay_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
79 79 {
80 80 xoptattr_t *xoap = NULL;
81 81 uint64_t *attrs;
82 82 uint64_t *crtime;
83 83 uint32_t *bitmap;
84 84 void *scanstamp;
85 85 int i;
86 86
87 87 xvap->xva_vattr.va_mask |= AT_XVATTR;
88 88 if ((xoap = xva_getxoptattr(xvap)) == NULL) {
89 89 xvap->xva_vattr.va_mask &= ~AT_XVATTR; /* shouldn't happen */
90 90 return;
91 91 }
92 92
93 93 ASSERT(lrattr->lr_attr_masksize == xvap->xva_mapsize);
94 94
95 95 bitmap = &lrattr->lr_attr_bitmap;
96 96 for (i = 0; i != lrattr->lr_attr_masksize; i++, bitmap++)
97 97 xvap->xva_reqattrmap[i] = *bitmap;
98 98
99 99 attrs = (uint64_t *)(lrattr + lrattr->lr_attr_masksize - 1);
100 100 crtime = attrs + 1;
101 101 scanstamp = (caddr_t)(crtime + 2);
102 102
103 103 if (XVA_ISSET_REQ(xvap, XAT_HIDDEN))
104 104 xoap->xoa_hidden = ((*attrs & XAT0_HIDDEN) != 0);
105 105 if (XVA_ISSET_REQ(xvap, XAT_SYSTEM))
106 106 xoap->xoa_system = ((*attrs & XAT0_SYSTEM) != 0);
107 107 if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE))
108 108 xoap->xoa_archive = ((*attrs & XAT0_ARCHIVE) != 0);
109 109 if (XVA_ISSET_REQ(xvap, XAT_READONLY))
110 110 xoap->xoa_readonly = ((*attrs & XAT0_READONLY) != 0);
111 111 if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE))
112 112 xoap->xoa_immutable = ((*attrs & XAT0_IMMUTABLE) != 0);
113 113 if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK))
114 114 xoap->xoa_nounlink = ((*attrs & XAT0_NOUNLINK) != 0);
115 115 if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY))
116 116 xoap->xoa_appendonly = ((*attrs & XAT0_APPENDONLY) != 0);
117 117 if (XVA_ISSET_REQ(xvap, XAT_NODUMP))
118 118 xoap->xoa_nodump = ((*attrs & XAT0_NODUMP) != 0);
119 119 if (XVA_ISSET_REQ(xvap, XAT_OPAQUE))
120 120 xoap->xoa_opaque = ((*attrs & XAT0_OPAQUE) != 0);
121 121 if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED))
122 122 xoap->xoa_av_modified = ((*attrs & XAT0_AV_MODIFIED) != 0);
123 123 if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED))
124 124 xoap->xoa_av_quarantined =
125 125 ((*attrs & XAT0_AV_QUARANTINED) != 0);
126 126 if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
127 127 ZFS_TIME_DECODE(&xoap->xoa_createtime, crtime);
128 128 if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) {
129 129 ASSERT(!XVA_ISSET_REQ(xvap, XAT_PROJID));
130 130
131 131 bcopy(scanstamp, xoap->xoa_av_scanstamp, AV_SCANSTAMP_SZ);
132 132 } else if (XVA_ISSET_REQ(xvap, XAT_PROJID)) {
133 133 /*
134 134 * XAT_PROJID and XAT_AV_SCANSTAMP will never be valid
135 135 * at the same time, so we can share the same space.
136 136 */
137 137 bcopy(scanstamp, &xoap->xoa_projid, sizeof (uint64_t));
138 138 }
139 139 if (XVA_ISSET_REQ(xvap, XAT_REPARSE))
140 140 xoap->xoa_reparse = ((*attrs & XAT0_REPARSE) != 0);
141 141 if (XVA_ISSET_REQ(xvap, XAT_OFFLINE))
142 142 xoap->xoa_offline = ((*attrs & XAT0_OFFLINE) != 0);
143 143 if (XVA_ISSET_REQ(xvap, XAT_SPARSE))
144 144 xoap->xoa_sparse = ((*attrs & XAT0_SPARSE) != 0);
145 145 if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT))
146 146 xoap->xoa_projinherit = ((*attrs & XAT0_PROJINHERIT) != 0);
147 147 }
148 148
149 149 static int
150 150 zfs_replay_domain_cnt(uint64_t uid, uint64_t gid)
151 151 {
152 152 uint64_t uid_idx;
153 153 uint64_t gid_idx;
154 154 int domcnt = 0;
155 155
156 156 uid_idx = FUID_INDEX(uid);
157 157 gid_idx = FUID_INDEX(gid);
158 158 if (uid_idx)
159 159 domcnt++;
160 160 if (gid_idx > 0 && gid_idx != uid_idx)
161 161 domcnt++;
162 162
163 163 return (domcnt);
164 164 }
165 165
166 166 static void *
167 167 zfs_replay_fuid_domain_common(zfs_fuid_info_t *fuid_infop, void *start,
168 168 int domcnt)
169 169 {
170 170 int i;
171 171
172 172 for (i = 0; i != domcnt; i++) {
173 173 fuid_infop->z_domain_table[i] = start;
174 174 start = (caddr_t)start + strlen(start) + 1;
175 175 }
176 176
177 177 return (start);
178 178 }
179 179
180 180 /*
181 181 * Set the uid/gid in the fuid_info structure.
182 182 */
183 183 static void
184 184 zfs_replay_fuid_ugid(zfs_fuid_info_t *fuid_infop, uint64_t uid, uint64_t gid)
185 185 {
186 186 /*
187 187 * If owner or group are log specific FUIDs then slurp up
188 188 * domain information and build zfs_fuid_info_t
189 189 */
190 190 if (IS_EPHEMERAL(uid))
191 191 fuid_infop->z_fuid_owner = uid;
192 192
193 193 if (IS_EPHEMERAL(gid))
194 194 fuid_infop->z_fuid_group = gid;
195 195 }
196 196
197 197 /*
198 198 * Load fuid domains into fuid_info_t
199 199 */
200 200 static zfs_fuid_info_t *
201 201 zfs_replay_fuid_domain(void *buf, void **end, uint64_t uid, uint64_t gid)
202 202 {
203 203 int domcnt;
204 204
205 205 zfs_fuid_info_t *fuid_infop;
206 206
207 207 fuid_infop = zfs_fuid_info_alloc();
208 208
209 209 domcnt = zfs_replay_domain_cnt(uid, gid);
210 210
211 211 if (domcnt == 0)
212 212 return (fuid_infop);
213 213
214 214 fuid_infop->z_domain_table =
215 215 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
216 216
217 217 zfs_replay_fuid_ugid(fuid_infop, uid, gid);
218 218
219 219 fuid_infop->z_domain_cnt = domcnt;
220 220 *end = zfs_replay_fuid_domain_common(fuid_infop, buf, domcnt);
221 221 return (fuid_infop);
222 222 }
223 223
224 224 /*
225 225 * load zfs_fuid_t's and fuid_domains into fuid_info_t
226 226 */
227 227 static zfs_fuid_info_t *
228 228 zfs_replay_fuids(void *start, void **end, int idcnt, int domcnt, uint64_t uid,
229 229 uint64_t gid)
230 230 {
231 231 uint64_t *log_fuid = (uint64_t *)start;
232 232 zfs_fuid_info_t *fuid_infop;
233 233 int i;
234 234
235 235 fuid_infop = zfs_fuid_info_alloc();
236 236 fuid_infop->z_domain_cnt = domcnt;
237 237
238 238 fuid_infop->z_domain_table =
239 239 kmem_zalloc(domcnt * sizeof (char **), KM_SLEEP);
240 240
241 241 for (i = 0; i != idcnt; i++) {
242 242 zfs_fuid_t *zfuid;
243 243
244 244 zfuid = kmem_alloc(sizeof (zfs_fuid_t), KM_SLEEP);
245 245 zfuid->z_logfuid = *log_fuid;
246 246 zfuid->z_id = -1;
247 247 zfuid->z_domidx = 0;
248 248 list_insert_tail(&fuid_infop->z_fuids, zfuid);
249 249 log_fuid++;
250 250 }
251 251
252 252 zfs_replay_fuid_ugid(fuid_infop, uid, gid);
253 253
254 254 *end = zfs_replay_fuid_domain_common(fuid_infop, log_fuid, domcnt);
255 255 return (fuid_infop);
256 256 }
257 257
258 258 static void
259 259 zfs_replay_swap_attrs(lr_attr_t *lrattr)
260 260 {
261 261 /* swap the lr_attr structure */
262 262 byteswap_uint32_array(lrattr, sizeof (*lrattr));
263 263 /* swap the bitmap */
264 264 byteswap_uint32_array(lrattr + 1, (lrattr->lr_attr_masksize - 1) *
265 265 sizeof (uint32_t));
266 266 /* swap the attributes, create time + 64 bit word for attributes */
267 267 byteswap_uint64_array((caddr_t)(lrattr + 1) + (sizeof (uint32_t) *
268 268 (lrattr->lr_attr_masksize - 1)), 3 * sizeof (uint64_t));
269 269 }
270 270
271 271 /*
272 272 * Replay file create with optional ACL, xvattr information as well
273 273 * as option FUID information.
274 274 */
275 275 static int
276 276 zfs_replay_create_acl(void *arg1, void *arg2, boolean_t byteswap)
277 277 {
278 278 zfsvfs_t *zfsvfs = arg1;
279 279 lr_acl_create_t *lracl = arg2;
280 280 char *name = NULL; /* location determined later */
281 281 lr_create_t *lr = (lr_create_t *)lracl;
282 282 znode_t *dzp;
283 283 vnode_t *vp = NULL;
284 284 xvattr_t xva;
285 285 int vflg = 0;
286 286 vsecattr_t vsec = { 0 };
287 287 lr_attr_t *lrattr;
288 288 void *aclstart;
289 289 void *fuidstart;
290 290 size_t xvatlen = 0;
291 291 uint64_t txtype;
292 292 uint64_t objid;
293 293 uint64_t dnodesize;
294 294 int error;
295 295
296 296 txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
297 297 if (byteswap) {
298 298 byteswap_uint64_array(lracl, sizeof (*lracl));
299 299 if (txtype == TX_CREATE_ACL_ATTR ||
300 300 txtype == TX_MKDIR_ACL_ATTR) {
301 301 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
302 302 zfs_replay_swap_attrs(lrattr);
303 303 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
304 304 }
305 305
306 306 aclstart = (caddr_t)(lracl + 1) + xvatlen;
307 307 zfs_ace_byteswap(aclstart, lracl->lr_acl_bytes, B_FALSE);
308 308 /* swap fuids */
309 309 if (lracl->lr_fuidcnt) {
310 310 byteswap_uint64_array((caddr_t)aclstart +
311 311 ZIL_ACE_LENGTH(lracl->lr_acl_bytes),
312 312 lracl->lr_fuidcnt * sizeof (uint64_t));
313 313 }
314 314 }
315 315
316 316 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
317 317 return (error);
318 318
319 319 objid = LR_FOID_GET_OBJ(lr->lr_foid);
320 320 dnodesize = LR_FOID_GET_SLOTS(lr->lr_foid) << DNODE_SHIFT;
321 321
322 322 xva_init(&xva);
323 323 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
324 324 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, objid);
325 325
326 326 /*
327 327 * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
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327 lines elided |
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328 328 * eventually end up in zfs_mknode(), which assigns the object's
329 329 * creation time, generation number, and dnode size. The generic
330 330 * zfs_create() has no concept of these attributes, so we smuggle
331 331 * the values inside the vattr's otherwise unused va_ctime,
332 332 * va_nblocks, and va_fsid fields.
333 333 */
334 334 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
335 335 xva.xva_vattr.va_nblocks = lr->lr_gen;
336 336 xva.xva_vattr.va_fsid = dnodesize;
337 337
338 - error = dmu_object_info(zfsvfs->z_os, lr->lr_foid, NULL);
339 - if (error != ENOENT)
338 + error = dnode_try_claim(zfsvfs->z_os, objid, dnodesize >> DNODE_SHIFT);
339 + if (error)
340 340 goto bail;
341 341
342 342 if (lr->lr_common.lrc_txtype & TX_CI)
343 343 vflg |= FIGNORECASE;
344 344 switch (txtype) {
345 345 case TX_CREATE_ACL:
346 346 aclstart = (caddr_t)(lracl + 1);
347 347 fuidstart = (caddr_t)aclstart +
348 348 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
349 349 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
350 350 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
351 351 lr->lr_uid, lr->lr_gid);
352 352 /*FALLTHROUGH*/
353 353 case TX_CREATE_ACL_ATTR:
354 354 if (name == NULL) {
355 355 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
356 356 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
357 357 xva.xva_vattr.va_mask |= AT_XVATTR;
358 358 zfs_replay_xvattr(lrattr, &xva);
359 359 }
360 360 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
361 361 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
362 362 vsec.vsa_aclcnt = lracl->lr_aclcnt;
363 363 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
364 364 vsec.vsa_aclflags = lracl->lr_acl_flags;
365 365 if (zfsvfs->z_fuid_replay == NULL) {
366 366 fuidstart = (caddr_t)(lracl + 1) + xvatlen +
367 367 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
368 368 zfsvfs->z_fuid_replay =
369 369 zfs_replay_fuids(fuidstart,
370 370 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
371 371 lr->lr_uid, lr->lr_gid);
372 372 }
373 373
374 374 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
375 375 0, 0, &vp, kcred, vflg, NULL, &vsec);
376 376 break;
377 377 case TX_MKDIR_ACL:
378 378 aclstart = (caddr_t)(lracl + 1);
379 379 fuidstart = (caddr_t)aclstart +
380 380 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
381 381 zfsvfs->z_fuid_replay = zfs_replay_fuids(fuidstart,
382 382 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
383 383 lr->lr_uid, lr->lr_gid);
384 384 /*FALLTHROUGH*/
385 385 case TX_MKDIR_ACL_ATTR:
386 386 if (name == NULL) {
387 387 lrattr = (lr_attr_t *)(caddr_t)(lracl + 1);
388 388 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
389 389 zfs_replay_xvattr(lrattr, &xva);
390 390 }
391 391 vsec.vsa_mask = VSA_ACE | VSA_ACE_ACLFLAGS;
392 392 vsec.vsa_aclentp = (caddr_t)(lracl + 1) + xvatlen;
393 393 vsec.vsa_aclcnt = lracl->lr_aclcnt;
394 394 vsec.vsa_aclentsz = lracl->lr_acl_bytes;
395 395 vsec.vsa_aclflags = lracl->lr_acl_flags;
396 396 if (zfsvfs->z_fuid_replay == NULL) {
397 397 fuidstart = (caddr_t)(lracl + 1) + xvatlen +
398 398 ZIL_ACE_LENGTH(lracl->lr_acl_bytes);
399 399 zfsvfs->z_fuid_replay =
400 400 zfs_replay_fuids(fuidstart,
401 401 (void *)&name, lracl->lr_fuidcnt, lracl->lr_domcnt,
402 402 lr->lr_uid, lr->lr_gid);
403 403 }
404 404 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
405 405 &vp, kcred, NULL, vflg, &vsec);
406 406 break;
407 407 default:
408 408 error = SET_ERROR(ENOTSUP);
409 409 }
410 410
411 411 bail:
412 412 if (error == 0 && vp != NULL)
413 413 VN_RELE(vp);
414 414
415 415 VN_RELE(ZTOV(dzp));
416 416
417 417 if (zfsvfs->z_fuid_replay)
418 418 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
419 419 zfsvfs->z_fuid_replay = NULL;
420 420
421 421 return (error);
422 422 }
423 423
424 424 static int
425 425 zfs_replay_create(void *arg1, void *arg2, boolean_t byteswap)
426 426 {
427 427 zfsvfs_t *zfsvfs = arg1;
428 428 lr_create_t *lr = arg2;
429 429 char *name = NULL; /* location determined later */
430 430 char *link; /* symlink content follows name */
431 431 znode_t *dzp;
432 432 vnode_t *vp = NULL;
433 433 xvattr_t xva;
434 434 int vflg = 0;
435 435 size_t lrsize = sizeof (lr_create_t);
436 436 lr_attr_t *lrattr;
437 437 void *start;
438 438 size_t xvatlen;
439 439 uint64_t txtype;
440 440 int error;
441 441
442 442 txtype = (lr->lr_common.lrc_txtype & ~TX_CI);
443 443 if (byteswap) {
444 444 byteswap_uint64_array(lr, sizeof (*lr));
445 445 if (txtype == TX_CREATE_ATTR || txtype == TX_MKDIR_ATTR)
446 446 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
447 447 }
448 448
449 449
450 450 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
451 451 return (error);
452 452
453 453 uint64_t objid = LR_FOID_GET_OBJ(lr->lr_foid);
454 454 int dnodesize = LR_FOID_GET_SLOTS(lr->lr_foid) << DNODE_SHIFT;
455 455
456 456 xva_init(&xva);
457 457 zfs_init_vattr(&xva.xva_vattr, AT_TYPE | AT_MODE | AT_UID | AT_GID,
458 458 lr->lr_mode, lr->lr_uid, lr->lr_gid, lr->lr_rdev, objid);
459 459
460 460 /*
461 461 * All forms of zfs create (create, mkdir, mkxattrdir, symlink)
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112 lines elided |
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462 462 * eventually end up in zfs_mknode(), which assigns the object's
463 463 * creation time, generation number, and dnode slot count. The
464 464 * generic zfs_create() has no concept of these attributes, so
465 465 * we smuggle the values inside the vattr's otherwise unused
466 466 * va_ctime, va_nblocks and va_fsid fields.
467 467 */
468 468 ZFS_TIME_DECODE(&xva.xva_vattr.va_ctime, lr->lr_crtime);
469 469 xva.xva_vattr.va_nblocks = lr->lr_gen;
470 470 xva.xva_vattr.va_fsid = dnodesize;
471 471
472 - error = dmu_object_info(zfsvfs->z_os, objid, NULL);
473 - if (error != ENOENT)
472 + error = dnode_try_claim(zfsvfs->z_os, objid, dnodesize >> DNODE_SHIFT);
473 + if (error)
474 474 goto out;
475 475
476 476 if (lr->lr_common.lrc_txtype & TX_CI)
477 477 vflg |= FIGNORECASE;
478 478
479 479 /*
480 480 * Symlinks don't have fuid info, and CIFS never creates
481 481 * symlinks.
482 482 *
483 483 * The _ATTR versions will grab the fuid info in their subcases.
484 484 */
485 485 if ((int)lr->lr_common.lrc_txtype != TX_SYMLINK &&
486 486 (int)lr->lr_common.lrc_txtype != TX_MKDIR_ATTR &&
487 487 (int)lr->lr_common.lrc_txtype != TX_CREATE_ATTR) {
488 488 start = (lr + 1);
489 489 zfsvfs->z_fuid_replay =
490 490 zfs_replay_fuid_domain(start, &start,
491 491 lr->lr_uid, lr->lr_gid);
492 492 }
493 493
494 494 switch (txtype) {
495 495 case TX_CREATE_ATTR:
496 496 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
497 497 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
498 498 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
499 499 start = (caddr_t)(lr + 1) + xvatlen;
500 500 zfsvfs->z_fuid_replay =
501 501 zfs_replay_fuid_domain(start, &start,
502 502 lr->lr_uid, lr->lr_gid);
503 503 name = (char *)start;
504 504
505 505 /*FALLTHROUGH*/
506 506 case TX_CREATE:
507 507 if (name == NULL)
508 508 name = (char *)start;
509 509
510 510 error = VOP_CREATE(ZTOV(dzp), name, &xva.xva_vattr,
511 511 0, 0, &vp, kcred, vflg, NULL, NULL);
512 512 break;
513 513 case TX_MKDIR_ATTR:
514 514 lrattr = (lr_attr_t *)(caddr_t)(lr + 1);
515 515 xvatlen = ZIL_XVAT_SIZE(lrattr->lr_attr_masksize);
516 516 zfs_replay_xvattr((lr_attr_t *)((caddr_t)lr + lrsize), &xva);
517 517 start = (caddr_t)(lr + 1) + xvatlen;
518 518 zfsvfs->z_fuid_replay =
519 519 zfs_replay_fuid_domain(start, &start,
520 520 lr->lr_uid, lr->lr_gid);
521 521 name = (char *)start;
522 522
523 523 /*FALLTHROUGH*/
524 524 case TX_MKDIR:
525 525 if (name == NULL)
526 526 name = (char *)(lr + 1);
527 527
528 528 error = VOP_MKDIR(ZTOV(dzp), name, &xva.xva_vattr,
529 529 &vp, kcred, NULL, vflg, NULL);
530 530 break;
531 531 case TX_MKXATTR:
532 532 error = zfs_make_xattrdir(dzp, &xva.xva_vattr, &vp, kcred);
533 533 break;
534 534 case TX_SYMLINK:
535 535 name = (char *)(lr + 1);
536 536 link = name + strlen(name) + 1;
537 537 error = VOP_SYMLINK(ZTOV(dzp), name, &xva.xva_vattr,
538 538 link, kcred, NULL, vflg);
539 539 break;
540 540 default:
541 541 error = SET_ERROR(ENOTSUP);
542 542 }
543 543
544 544 out:
545 545 if (error == 0 && vp != NULL)
546 546 VN_RELE(vp);
547 547
548 548 VN_RELE(ZTOV(dzp));
549 549
550 550 if (zfsvfs->z_fuid_replay)
551 551 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
552 552 zfsvfs->z_fuid_replay = NULL;
553 553 return (error);
554 554 }
555 555
556 556 static int
557 557 zfs_replay_remove(void *arg1, void *arg2, boolean_t byteswap)
558 558 {
559 559 zfsvfs_t *zfsvfs = arg1;
560 560 lr_remove_t *lr = arg2;
561 561 char *name = (char *)(lr + 1); /* name follows lr_remove_t */
562 562 znode_t *dzp;
563 563 int error;
564 564 int vflg = 0;
565 565
566 566 if (byteswap)
567 567 byteswap_uint64_array(lr, sizeof (*lr));
568 568
569 569 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
570 570 return (error);
571 571
572 572 if (lr->lr_common.lrc_txtype & TX_CI)
573 573 vflg |= FIGNORECASE;
574 574
575 575 switch ((int)lr->lr_common.lrc_txtype) {
576 576 case TX_REMOVE:
577 577 error = VOP_REMOVE(ZTOV(dzp), name, kcred, NULL, vflg);
578 578 break;
579 579 case TX_RMDIR:
580 580 error = VOP_RMDIR(ZTOV(dzp), name, NULL, kcred, NULL, vflg);
581 581 break;
582 582 default:
583 583 error = SET_ERROR(ENOTSUP);
584 584 }
585 585
586 586 VN_RELE(ZTOV(dzp));
587 587
588 588 return (error);
589 589 }
590 590
591 591 static int
592 592 zfs_replay_link(void *arg1, void *arg2, boolean_t byteswap)
593 593 {
594 594 zfsvfs_t *zfsvfs = arg1;
595 595 lr_link_t *lr = arg2;
596 596 char *name = (char *)(lr + 1); /* name follows lr_link_t */
597 597 znode_t *dzp, *zp;
598 598 int error;
599 599 int vflg = 0;
600 600
601 601 if (byteswap)
602 602 byteswap_uint64_array(lr, sizeof (*lr));
603 603
604 604 if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
605 605 return (error);
606 606
607 607 if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
608 608 VN_RELE(ZTOV(dzp));
609 609 return (error);
610 610 }
611 611
612 612 if (lr->lr_common.lrc_txtype & TX_CI)
613 613 vflg |= FIGNORECASE;
614 614
615 615 error = VOP_LINK(ZTOV(dzp), ZTOV(zp), name, kcred, NULL, vflg);
616 616
617 617 VN_RELE(ZTOV(zp));
618 618 VN_RELE(ZTOV(dzp));
619 619
620 620 return (error);
621 621 }
622 622
623 623 static int
624 624 zfs_replay_rename(void *arg1, void *arg2, boolean_t byteswap)
625 625 {
626 626 zfsvfs_t *zfsvfs = arg1;
627 627 lr_rename_t *lr = arg2;
628 628 char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */
629 629 char *tname = sname + strlen(sname) + 1;
630 630 znode_t *sdzp, *tdzp;
631 631 int error;
632 632 int vflg = 0;
633 633
634 634 if (byteswap)
635 635 byteswap_uint64_array(lr, sizeof (*lr));
636 636
637 637 if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0)
638 638 return (error);
639 639
640 640 if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) {
641 641 VN_RELE(ZTOV(sdzp));
642 642 return (error);
643 643 }
644 644
645 645 if (lr->lr_common.lrc_txtype & TX_CI)
646 646 vflg |= FIGNORECASE;
647 647
648 648 error = VOP_RENAME(ZTOV(sdzp), sname, ZTOV(tdzp), tname, kcred,
649 649 NULL, vflg);
650 650
651 651 VN_RELE(ZTOV(tdzp));
652 652 VN_RELE(ZTOV(sdzp));
653 653
654 654 return (error);
655 655 }
656 656
657 657 static int
658 658 zfs_replay_write(void *arg1, void *arg2, boolean_t byteswap)
659 659 {
660 660 zfsvfs_t *zfsvfs = arg1;
661 661 lr_write_t *lr = arg2;
662 662 char *data = (char *)(lr + 1); /* data follows lr_write_t */
663 663 znode_t *zp;
664 664 int error;
665 665 ssize_t resid;
666 666 uint64_t eod, offset, length;
667 667
668 668 if (byteswap)
669 669 byteswap_uint64_array(lr, sizeof (*lr));
670 670
671 671 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
672 672 /*
673 673 * As we can log writes out of order, it's possible the
674 674 * file has been removed. In this case just drop the write
675 675 * and return success.
676 676 */
677 677 if (error == ENOENT)
678 678 error = 0;
679 679 return (error);
680 680 }
681 681
682 682 offset = lr->lr_offset;
683 683 length = lr->lr_length;
684 684 eod = offset + length; /* end of data for this write */
685 685
686 686 /*
687 687 * This may be a write from a dmu_sync() for a whole block,
688 688 * and may extend beyond the current end of the file.
689 689 * We can't just replay what was written for this TX_WRITE as
690 690 * a future TX_WRITE2 may extend the eof and the data for that
691 691 * write needs to be there. So we write the whole block and
692 692 * reduce the eof. This needs to be done within the single dmu
693 693 * transaction created within vn_rdwr -> zfs_write. So a possible
694 694 * new end of file is passed through in zfsvfs->z_replay_eof
695 695 */
696 696
697 697 zfsvfs->z_replay_eof = 0; /* 0 means don't change end of file */
698 698
699 699 /* If it's a dmu_sync() block, write the whole block */
700 700 if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
701 701 uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
702 702 if (length < blocksize) {
703 703 offset -= offset % blocksize;
704 704 length = blocksize;
705 705 }
706 706 if (zp->z_size < eod)
707 707 zfsvfs->z_replay_eof = eod;
708 708 }
709 709
710 710 error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, length, offset,
711 711 UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid);
712 712
713 713 VN_RELE(ZTOV(zp));
714 714 zfsvfs->z_replay_eof = 0; /* safety */
715 715
716 716 return (error);
717 717 }
718 718
719 719 /*
720 720 * TX_WRITE2 are only generated when dmu_sync() returns EALREADY
721 721 * meaning the pool block is already being synced. So now that we always write
722 722 * out full blocks, all we have to do is expand the eof if
723 723 * the file is grown.
724 724 */
725 725 static int
726 726 zfs_replay_write2(void *arg1, void *arg2, boolean_t byteswap)
727 727 {
728 728 zfsvfs_t *zfsvfs = arg1;
729 729 lr_write_t *lr = arg2;
730 730 znode_t *zp;
731 731 int error;
732 732 uint64_t end;
733 733
734 734 if (byteswap)
735 735 byteswap_uint64_array(lr, sizeof (*lr));
736 736
737 737 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
738 738 return (error);
739 739
740 740 top:
741 741 end = lr->lr_offset + lr->lr_length;
742 742 if (end > zp->z_size) {
743 743 dmu_tx_t *tx = dmu_tx_create(zfsvfs->z_os);
744 744
745 745 zp->z_size = end;
746 746 dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
747 747 error = dmu_tx_assign(tx, TXG_WAIT);
748 748 if (error) {
749 749 VN_RELE(ZTOV(zp));
750 750 if (error == ERESTART) {
751 751 dmu_tx_wait(tx);
752 752 dmu_tx_abort(tx);
753 753 goto top;
754 754 }
755 755 dmu_tx_abort(tx);
756 756 return (error);
757 757 }
758 758 (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs),
759 759 (void *)&zp->z_size, sizeof (uint64_t), tx);
760 760
761 761 /* Ensure the replayed seq is updated */
762 762 (void) zil_replaying(zfsvfs->z_log, tx);
763 763
764 764 dmu_tx_commit(tx);
765 765 }
766 766
767 767 VN_RELE(ZTOV(zp));
768 768
769 769 return (error);
770 770 }
771 771
772 772 static int
773 773 zfs_replay_truncate(void *arg1, void *arg2, boolean_t byteswap)
774 774 {
775 775 zfsvfs_t *zfsvfs = arg1;
776 776 lr_truncate_t *lr = arg2;
777 777 znode_t *zp;
778 778 flock64_t fl;
779 779 int error;
780 780
781 781 if (byteswap)
782 782 byteswap_uint64_array(lr, sizeof (*lr));
783 783
784 784 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
785 785 return (error);
786 786
787 787 bzero(&fl, sizeof (fl));
788 788 fl.l_type = F_WRLCK;
789 789 fl.l_whence = 0;
790 790 fl.l_start = lr->lr_offset;
791 791 fl.l_len = lr->lr_length;
792 792
793 793 error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
794 794 lr->lr_offset, kcred, NULL);
795 795
796 796 VN_RELE(ZTOV(zp));
797 797
798 798 return (error);
799 799 }
800 800
801 801 static int
802 802 zfs_replay_setattr(void *arg1, void *arg2, boolean_t byteswap)
803 803 {
804 804 zfsvfs_t *zfsvfs = arg1;
805 805 lr_setattr_t *lr = arg2;
806 806 znode_t *zp;
807 807 xvattr_t xva;
808 808 vattr_t *vap = &xva.xva_vattr;
809 809 int error;
810 810 void *start;
811 811
812 812 xva_init(&xva);
813 813 if (byteswap) {
814 814 byteswap_uint64_array(lr, sizeof (*lr));
815 815
816 816 if ((lr->lr_mask & AT_XVATTR) &&
817 817 zfsvfs->z_version >= ZPL_VERSION_INITIAL)
818 818 zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
819 819 }
820 820
821 821 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
822 822 return (error);
823 823
824 824 zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode,
825 825 lr->lr_uid, lr->lr_gid, 0, lr->lr_foid);
826 826
827 827 vap->va_size = lr->lr_size;
828 828 ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime);
829 829 ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime);
830 830
831 831 /*
832 832 * Fill in xvattr_t portions if necessary.
833 833 */
834 834
835 835 start = (lr_setattr_t *)(lr + 1);
836 836 if (vap->va_mask & AT_XVATTR) {
837 837 zfs_replay_xvattr((lr_attr_t *)start, &xva);
838 838 start = (caddr_t)start +
839 839 ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize);
840 840 } else
841 841 xva.xva_vattr.va_mask &= ~AT_XVATTR;
842 842
843 843 zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start,
844 844 lr->lr_uid, lr->lr_gid);
845 845
846 846 error = VOP_SETATTR(ZTOV(zp), vap, 0, kcred, NULL);
847 847
848 848 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
849 849 zfsvfs->z_fuid_replay = NULL;
850 850 VN_RELE(ZTOV(zp));
851 851
852 852 return (error);
853 853 }
854 854
855 855 static int
856 856 zfs_replay_acl_v0(void *arg1, void *arg2, boolean_t byteswap)
857 857 {
858 858 zfsvfs_t *zfsvfs = arg1;
859 859 lr_acl_v0_t *lr = arg2;
860 860 ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
861 861 vsecattr_t vsa;
862 862 znode_t *zp;
863 863 int error;
864 864
865 865 if (byteswap) {
866 866 byteswap_uint64_array(lr, sizeof (*lr));
867 867 zfs_oldace_byteswap(ace, lr->lr_aclcnt);
868 868 }
869 869
870 870 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
871 871 return (error);
872 872
873 873 bzero(&vsa, sizeof (vsa));
874 874 vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
875 875 vsa.vsa_aclcnt = lr->lr_aclcnt;
876 876 vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt;
877 877 vsa.vsa_aclflags = 0;
878 878 vsa.vsa_aclentp = ace;
879 879
880 880 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
881 881
882 882 VN_RELE(ZTOV(zp));
883 883
884 884 return (error);
885 885 }
886 886
887 887 /*
888 888 * Replaying ACLs is complicated by FUID support.
889 889 * The log record may contain some optional data
890 890 * to be used for replaying FUID's. These pieces
891 891 * are the actual FUIDs that were created initially.
892 892 * The FUID table index may no longer be valid and
893 893 * during zfs_create() a new index may be assigned.
894 894 * Because of this the log will contain the original
895 895 * doman+rid in order to create a new FUID.
896 896 *
897 897 * The individual ACEs may contain an ephemeral uid/gid which is no
898 898 * longer valid and will need to be replaced with an actual FUID.
899 899 *
900 900 */
901 901 static int
902 902 zfs_replay_acl(void *arg1, void *arg2, boolean_t byteswap)
903 903 {
904 904 zfsvfs_t *zfsvfs = arg1;
905 905 lr_acl_t *lr = arg2;
906 906 ace_t *ace = (ace_t *)(lr + 1);
907 907 vsecattr_t vsa;
908 908 znode_t *zp;
909 909 int error;
910 910
911 911 if (byteswap) {
912 912 byteswap_uint64_array(lr, sizeof (*lr));
913 913 zfs_ace_byteswap(ace, lr->lr_acl_bytes, B_FALSE);
914 914 if (lr->lr_fuidcnt) {
915 915 byteswap_uint64_array((caddr_t)ace +
916 916 ZIL_ACE_LENGTH(lr->lr_acl_bytes),
917 917 lr->lr_fuidcnt * sizeof (uint64_t));
918 918 }
919 919 }
920 920
921 921 if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
922 922 return (error);
923 923
924 924 bzero(&vsa, sizeof (vsa));
925 925 vsa.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS;
926 926 vsa.vsa_aclcnt = lr->lr_aclcnt;
927 927 vsa.vsa_aclentp = ace;
928 928 vsa.vsa_aclentsz = lr->lr_acl_bytes;
929 929 vsa.vsa_aclflags = lr->lr_acl_flags;
930 930
931 931 if (lr->lr_fuidcnt) {
932 932 void *fuidstart = (caddr_t)ace +
933 933 ZIL_ACE_LENGTH(lr->lr_acl_bytes);
934 934
935 935 zfsvfs->z_fuid_replay =
936 936 zfs_replay_fuids(fuidstart, &fuidstart,
937 937 lr->lr_fuidcnt, lr->lr_domcnt, 0, 0);
938 938 }
939 939
940 940 error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
941 941
942 942 if (zfsvfs->z_fuid_replay)
943 943 zfs_fuid_info_free(zfsvfs->z_fuid_replay);
944 944
945 945 zfsvfs->z_fuid_replay = NULL;
946 946 VN_RELE(ZTOV(zp));
947 947
948 948 return (error);
949 949 }
950 950
951 951 /*
952 952 * Callback vectors for replaying records
953 953 */
954 954 zil_replay_func_t *zfs_replay_vector[TX_MAX_TYPE] = {
955 955 zfs_replay_error, /* 0 no such transaction type */
956 956 zfs_replay_create, /* TX_CREATE */
957 957 zfs_replay_create, /* TX_MKDIR */
958 958 zfs_replay_create, /* TX_MKXATTR */
959 959 zfs_replay_create, /* TX_SYMLINK */
960 960 zfs_replay_remove, /* TX_REMOVE */
961 961 zfs_replay_remove, /* TX_RMDIR */
962 962 zfs_replay_link, /* TX_LINK */
963 963 zfs_replay_rename, /* TX_RENAME */
964 964 zfs_replay_write, /* TX_WRITE */
965 965 zfs_replay_truncate, /* TX_TRUNCATE */
966 966 zfs_replay_setattr, /* TX_SETATTR */
967 967 zfs_replay_acl_v0, /* TX_ACL_V0 */
968 968 zfs_replay_acl, /* TX_ACL */
969 969 zfs_replay_create_acl, /* TX_CREATE_ACL */
970 970 zfs_replay_create, /* TX_CREATE_ATTR */
971 971 zfs_replay_create_acl, /* TX_CREATE_ACL_ATTR */
972 972 zfs_replay_create_acl, /* TX_MKDIR_ACL */
973 973 zfs_replay_create, /* TX_MKDIR_ATTR */
974 974 zfs_replay_create_acl, /* TX_MKDIR_ACL_ATTR */
975 975 zfs_replay_write2, /* TX_WRITE2 */
976 976 };
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