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--- old/usr/src/uts/common/fs/tmpfs/tmp_vnops.c
+++ new/usr/src/uts/common/fs/tmpfs/tmp_vnops.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 2009 Sun Microsystems, Inc. All rights reserved.
24 24 * Use is subject to license terms.
25 25 */
26 26
27 27 /*
28 28 * Copyright (c) 2012, Joyent, Inc. All rights reserved.
29 29 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
30 30 */
31 31
32 32 #include <sys/types.h>
33 33 #include <sys/param.h>
34 34 #include <sys/t_lock.h>
35 35 #include <sys/systm.h>
36 36 #include <sys/sysmacros.h>
37 37 #include <sys/user.h>
38 38 #include <sys/time.h>
39 39 #include <sys/vfs.h>
40 40 #include <sys/vfs_opreg.h>
41 41 #include <sys/vnode.h>
42 42 #include <sys/file.h>
43 43 #include <sys/fcntl.h>
44 44 #include <sys/flock.h>
45 45 #include <sys/kmem.h>
46 46 #include <sys/uio.h>
47 47 #include <sys/errno.h>
48 48 #include <sys/stat.h>
49 49 #include <sys/cred.h>
50 50 #include <sys/dirent.h>
51 51 #include <sys/pathname.h>
52 52 #include <sys/vmsystm.h>
53 53 #include <sys/fs/tmp.h>
54 54 #include <sys/fs/tmpnode.h>
55 55 #include <sys/mman.h>
56 56 #include <vm/hat.h>
57 57 #include <vm/seg_vn.h>
58 58 #include <vm/seg_map.h>
59 59 #include <vm/seg.h>
60 60 #include <vm/anon.h>
61 61 #include <vm/as.h>
62 62 #include <vm/page.h>
63 63 #include <vm/pvn.h>
64 64 #include <sys/cmn_err.h>
65 65 #include <sys/debug.h>
66 66 #include <sys/swap.h>
67 67 #include <sys/buf.h>
68 68 #include <sys/vm.h>
69 69 #include <sys/vtrace.h>
70 70 #include <sys/policy.h>
71 71 #include <fs/fs_subr.h>
72 72
73 73 static int tmp_getapage(struct vnode *, u_offset_t, size_t, uint_t *,
74 74 page_t **, size_t, struct seg *, caddr_t, enum seg_rw, struct cred *);
75 75 static int tmp_putapage(struct vnode *, page_t *, u_offset_t *, size_t *,
76 76 int, struct cred *);
77 77
78 78 /* ARGSUSED1 */
79 79 static int
80 80 tmp_open(struct vnode **vpp, int flag, struct cred *cred, caller_context_t *ct)
81 81 {
82 82 /*
83 83 * swapon to a tmpfs file is not supported so access
84 84 * is denied on open if VISSWAP is set.
85 85 */
86 86 if ((*vpp)->v_flag & VISSWAP)
87 87 return (EINVAL);
88 88 return (0);
89 89 }
90 90
91 91 /* ARGSUSED1 */
92 92 static int
93 93 tmp_close(
94 94 struct vnode *vp,
95 95 int flag,
96 96 int count,
97 97 offset_t offset,
98 98 struct cred *cred,
99 99 caller_context_t *ct)
100 100 {
101 101 cleanlocks(vp, ttoproc(curthread)->p_pid, 0);
102 102 cleanshares(vp, ttoproc(curthread)->p_pid);
103 103 return (0);
104 104 }
105 105
106 106 /*
107 107 * wrtmp does the real work of write requests for tmpfs.
108 108 */
109 109 static int
110 110 wrtmp(
111 111 struct tmount *tm,
112 112 struct tmpnode *tp,
113 113 struct uio *uio,
114 114 struct cred *cr,
115 115 struct caller_context *ct)
116 116 {
117 117 pgcnt_t pageoffset; /* offset in pages */
118 118 ulong_t segmap_offset; /* pagesize byte offset into segmap */
119 119 caddr_t base; /* base of segmap */
120 120 ssize_t bytes; /* bytes to uiomove */
121 121 pfn_t pagenumber; /* offset in pages into tmp file */
122 122 struct vnode *vp;
123 123 int error = 0;
124 124 int pagecreate; /* == 1 if we allocated a page */
125 125 int newpage;
126 126 rlim64_t limit = uio->uio_llimit;
127 127 long oresid = uio->uio_resid;
128 128 timestruc_t now;
129 129
130 130 long tn_size_changed = 0;
131 131 long old_tn_size;
132 132 long new_tn_size;
133 133
134 134 vp = TNTOV(tp);
135 135 ASSERT(vp->v_type == VREG);
136 136
137 137 TRACE_1(TR_FAC_TMPFS, TR_TMPFS_RWTMP_START,
138 138 "tmp_wrtmp_start:vp %p", vp);
139 139
140 140 ASSERT(RW_WRITE_HELD(&tp->tn_contents));
141 141 ASSERT(RW_WRITE_HELD(&tp->tn_rwlock));
142 142
143 143 if (MANDLOCK(vp, tp->tn_mode)) {
144 144 rw_exit(&tp->tn_contents);
145 145 /*
146 146 * tmp_getattr ends up being called by chklock
147 147 */
148 148 error = chklock(vp, FWRITE, uio->uio_loffset, uio->uio_resid,
149 149 uio->uio_fmode, ct);
150 150 rw_enter(&tp->tn_contents, RW_WRITER);
151 151 if (error != 0) {
152 152 TRACE_2(TR_FAC_TMPFS, TR_TMPFS_RWTMP_END,
153 153 "tmp_wrtmp_end:vp %p error %d", vp, error);
154 154 return (error);
155 155 }
156 156 }
157 157
158 158 if (uio->uio_loffset < 0)
159 159 return (EINVAL);
160 160
161 161 if (limit == RLIM64_INFINITY || limit > MAXOFFSET_T)
162 162 limit = MAXOFFSET_T;
163 163
164 164 if (uio->uio_loffset >= limit) {
165 165 proc_t *p = ttoproc(curthread);
166 166
167 167 mutex_enter(&p->p_lock);
168 168 (void) rctl_action(rctlproc_legacy[RLIMIT_FSIZE], p->p_rctls,
169 169 p, RCA_UNSAFE_SIGINFO);
170 170 mutex_exit(&p->p_lock);
171 171 return (EFBIG);
172 172 }
173 173
174 174 if (uio->uio_loffset >= MAXOFF_T) {
175 175 TRACE_2(TR_FAC_TMPFS, TR_TMPFS_RWTMP_END,
176 176 "tmp_wrtmp_end:vp %p error %d", vp, EINVAL);
177 177 return (EFBIG);
178 178 }
179 179
180 180 if (uio->uio_resid == 0) {
181 181 TRACE_2(TR_FAC_TMPFS, TR_TMPFS_RWTMP_END,
182 182 "tmp_wrtmp_end:vp %p error %d", vp, 0);
183 183 return (0);
184 184 }
185 185
186 186 if (limit > MAXOFF_T)
187 187 limit = MAXOFF_T;
188 188
189 189 do {
190 190 long offset;
191 191 long delta;
192 192
193 193 offset = (long)uio->uio_offset;
194 194 pageoffset = offset & PAGEOFFSET;
195 195 /*
196 196 * A maximum of PAGESIZE bytes of data is transferred
197 197 * each pass through this loop
198 198 */
199 199 bytes = MIN(PAGESIZE - pageoffset, uio->uio_resid);
200 200
201 201 if (offset + bytes >= limit) {
202 202 if (offset >= limit) {
203 203 error = EFBIG;
204 204 goto out;
205 205 }
206 206 bytes = limit - offset;
207 207 }
208 208 pagenumber = btop(offset);
209 209
210 210 /*
211 211 * delta is the amount of anonymous memory
212 212 * to reserve for the file.
213 213 * We always reserve in pagesize increments so
214 214 * unless we're extending the file into a new page,
215 215 * we don't need to call tmp_resv.
216 216 */
217 217 delta = offset + bytes -
218 218 P2ROUNDUP_TYPED(tp->tn_size, PAGESIZE, u_offset_t);
219 219 if (delta > 0) {
220 220 pagecreate = 1;
221 221 if (tmp_resv(tm, tp, delta, pagecreate)) {
222 222 /*
223 223 * Log file system full in the zone that owns
224 224 * the tmpfs mount, as well as in the global
225 225 * zone if necessary.
226 226 */
227 227 zcmn_err(tm->tm_vfsp->vfs_zone->zone_id,
228 228 CE_WARN, "%s: File system full, "
229 229 "swap space limit exceeded",
230 230 tm->tm_mntpath);
231 231
232 232 if (tm->tm_vfsp->vfs_zone->zone_id !=
233 233 GLOBAL_ZONEID) {
234 234
235 235 vfs_t *vfs = tm->tm_vfsp;
236 236
237 237 zcmn_err(GLOBAL_ZONEID,
238 238 CE_WARN, "%s: File system full, "
239 239 "swap space limit exceeded",
240 240 vfs->vfs_vnodecovered->v_path);
241 241 }
242 242 error = ENOSPC;
243 243 break;
244 244 }
245 245 tmpnode_growmap(tp, (ulong_t)offset + bytes);
246 246 }
247 247 /* grow the file to the new length */
248 248 if (offset + bytes > tp->tn_size) {
249 249 tn_size_changed = 1;
250 250 old_tn_size = tp->tn_size;
251 251 /*
252 252 * Postpone updating tp->tn_size until uiomove() is
253 253 * done.
254 254 */
255 255 new_tn_size = offset + bytes;
256 256 }
257 257 if (bytes == PAGESIZE) {
258 258 /*
259 259 * Writing whole page so reading from disk
260 260 * is a waste
261 261 */
262 262 pagecreate = 1;
263 263 } else {
264 264 pagecreate = 0;
265 265 }
266 266 /*
267 267 * If writing past EOF or filling in a hole
268 268 * we need to allocate an anon slot.
269 269 */
270 270 if (anon_get_ptr(tp->tn_anon, pagenumber) == NULL) {
271 271 (void) anon_set_ptr(tp->tn_anon, pagenumber,
272 272 anon_alloc(vp, ptob(pagenumber)), ANON_SLEEP);
273 273 pagecreate = 1;
274 274 tp->tn_nblocks++;
275 275 }
276 276
277 277 /*
278 278 * We have to drop the contents lock to allow the VM
279 279 * system to reacquire it in tmp_getpage()
280 280 */
281 281 rw_exit(&tp->tn_contents);
282 282
283 283 /*
284 284 * Touch the page and fault it in if it is not in core
285 285 * before segmap_getmapflt or vpm_data_copy can lock it.
286 286 * This is to avoid the deadlock if the buffer is mapped
287 287 * to the same file through mmap which we want to write.
288 288 */
289 289 uio_prefaultpages((long)bytes, uio);
290 290
291 291 newpage = 0;
292 292 if (vpm_enable) {
293 293 /*
294 294 * Copy data. If new pages are created, part of
295 295 * the page that is not written will be initizliazed
296 296 * with zeros.
297 297 */
298 298 error = vpm_data_copy(vp, offset, bytes, uio,
299 299 !pagecreate, &newpage, 1, S_WRITE);
300 300 } else {
301 301 /* Get offset within the segmap mapping */
302 302 segmap_offset = (offset & PAGEMASK) & MAXBOFFSET;
303 303 base = segmap_getmapflt(segkmap, vp,
304 304 (offset & MAXBMASK), PAGESIZE, !pagecreate,
305 305 S_WRITE);
306 306 }
307 307
308 308
309 309 if (!vpm_enable && pagecreate) {
310 310 /*
311 311 * segmap_pagecreate() returns 1 if it calls
312 312 * page_create_va() to allocate any pages.
313 313 */
314 314 newpage = segmap_pagecreate(segkmap,
315 315 base + segmap_offset, (size_t)PAGESIZE, 0);
316 316 /*
317 317 * Clear from the beginning of the page to the starting
318 318 * offset of the data.
319 319 */
320 320 if (pageoffset != 0)
321 321 (void) kzero(base + segmap_offset,
322 322 (size_t)pageoffset);
323 323 }
324 324
325 325 if (!vpm_enable) {
326 326 error = uiomove(base + segmap_offset + pageoffset,
327 327 (long)bytes, UIO_WRITE, uio);
328 328 }
329 329
330 330 if (!vpm_enable && pagecreate &&
331 331 uio->uio_offset < P2ROUNDUP(offset + bytes, PAGESIZE)) {
332 332 long zoffset; /* zero from offset into page */
333 333 /*
334 334 * We created pages w/o initializing them completely,
335 335 * thus we need to zero the part that wasn't set up.
336 336 * This happens on most EOF write cases and if
337 337 * we had some sort of error during the uiomove.
338 338 */
339 339 long nmoved;
340 340
341 341 nmoved = uio->uio_offset - offset;
342 342 ASSERT((nmoved + pageoffset) <= PAGESIZE);
343 343
344 344 /*
345 345 * Zero from the end of data in the page to the
346 346 * end of the page.
347 347 */
348 348 if ((zoffset = pageoffset + nmoved) < PAGESIZE)
349 349 (void) kzero(base + segmap_offset + zoffset,
350 350 (size_t)PAGESIZE - zoffset);
351 351 }
352 352
353 353 /*
354 354 * Unlock the pages which have been allocated by
355 355 * page_create_va() in segmap_pagecreate()
356 356 */
357 357 if (!vpm_enable && newpage) {
358 358 segmap_pageunlock(segkmap, base + segmap_offset,
359 359 (size_t)PAGESIZE, S_WRITE);
360 360 }
361 361
362 362 if (error) {
363 363 /*
364 364 * If we failed on a write, we must
365 365 * be sure to invalidate any pages that may have
366 366 * been allocated.
367 367 */
368 368 if (vpm_enable) {
369 369 (void) vpm_sync_pages(vp, offset, PAGESIZE,
370 370 SM_INVAL);
371 371 } else {
372 372 (void) segmap_release(segkmap, base, SM_INVAL);
373 373 }
374 374 } else {
375 375 if (vpm_enable) {
376 376 error = vpm_sync_pages(vp, offset, PAGESIZE,
377 377 0);
378 378 } else {
379 379 error = segmap_release(segkmap, base, 0);
380 380 }
381 381 }
382 382
383 383 /*
384 384 * Re-acquire contents lock.
385 385 */
386 386 rw_enter(&tp->tn_contents, RW_WRITER);
387 387
388 388 /*
389 389 * Update tn_size.
390 390 */
391 391 if (tn_size_changed)
392 392 tp->tn_size = new_tn_size;
393 393
394 394 /*
395 395 * If the uiomove failed, fix up tn_size.
396 396 */
397 397 if (error) {
398 398 if (tn_size_changed) {
399 399 /*
400 400 * The uiomove failed, and we
401 401 * allocated blocks,so get rid
402 402 * of them.
403 403 */
404 404 (void) tmpnode_trunc(tm, tp,
405 405 (ulong_t)old_tn_size);
406 406 }
407 407 } else {
408 408 /*
409 409 * XXX - Can this be out of the loop?
410 410 */
411 411 if ((tp->tn_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) &&
412 412 (tp->tn_mode & (S_ISUID | S_ISGID)) &&
413 413 secpolicy_vnode_setid_retain(cr,
414 414 (tp->tn_mode & S_ISUID) != 0 && tp->tn_uid == 0)) {
415 415 /*
416 416 * Clear Set-UID & Set-GID bits on
417 417 * successful write if not privileged
418 418 * and at least one of the execute bits
419 419 * is set. If we always clear Set-GID,
420 420 * mandatory file and record locking is
421 421 * unuseable.
422 422 */
423 423 tp->tn_mode &= ~(S_ISUID | S_ISGID);
424 424 }
425 425 gethrestime(&now);
426 426 tp->tn_mtime = now;
427 427 tp->tn_ctime = now;
428 428 }
429 429 } while (error == 0 && uio->uio_resid > 0 && bytes != 0);
430 430
431 431 out:
432 432 /*
433 433 * If we've already done a partial-write, terminate
434 434 * the write but return no error.
435 435 */
436 436 if (oresid != uio->uio_resid)
437 437 error = 0;
438 438 TRACE_2(TR_FAC_TMPFS, TR_TMPFS_RWTMP_END,
439 439 "tmp_wrtmp_end:vp %p error %d", vp, error);
440 440 return (error);
441 441 }
442 442
443 443 /*
444 444 * rdtmp does the real work of read requests for tmpfs.
445 445 */
446 446 static int
447 447 rdtmp(
448 448 struct tmount *tm,
449 449 struct tmpnode *tp,
450 450 struct uio *uio,
451 451 struct caller_context *ct)
452 452 {
453 453 ulong_t pageoffset; /* offset in tmpfs file (uio_offset) */
454 454 ulong_t segmap_offset; /* pagesize byte offset into segmap */
455 455 caddr_t base; /* base of segmap */
456 456 ssize_t bytes; /* bytes to uiomove */
457 457 struct vnode *vp;
458 458 int error;
459 459 long oresid = uio->uio_resid;
460 460
461 461 #if defined(lint)
462 462 tm = tm;
463 463 #endif
464 464 vp = TNTOV(tp);
465 465
466 466 TRACE_1(TR_FAC_TMPFS, TR_TMPFS_RWTMP_START, "tmp_rdtmp_start:vp %p",
467 467 vp);
468 468
469 469 ASSERT(RW_LOCK_HELD(&tp->tn_contents));
470 470
471 471 if (MANDLOCK(vp, tp->tn_mode)) {
472 472 rw_exit(&tp->tn_contents);
473 473 /*
474 474 * tmp_getattr ends up being called by chklock
475 475 */
476 476 error = chklock(vp, FREAD, uio->uio_loffset, uio->uio_resid,
477 477 uio->uio_fmode, ct);
478 478 rw_enter(&tp->tn_contents, RW_READER);
479 479 if (error != 0) {
480 480 TRACE_2(TR_FAC_TMPFS, TR_TMPFS_RWTMP_END,
481 481 "tmp_rdtmp_end:vp %p error %d", vp, error);
482 482 return (error);
483 483 }
484 484 }
485 485 ASSERT(tp->tn_type == VREG);
486 486
487 487 if (uio->uio_loffset >= MAXOFF_T) {
488 488 TRACE_2(TR_FAC_TMPFS, TR_TMPFS_RWTMP_END,
489 489 "tmp_rdtmp_end:vp %p error %d", vp, EINVAL);
490 490 return (0);
491 491 }
492 492 if (uio->uio_loffset < 0)
493 493 return (EINVAL);
494 494 if (uio->uio_resid == 0) {
495 495 TRACE_2(TR_FAC_TMPFS, TR_TMPFS_RWTMP_END,
496 496 "tmp_rdtmp_end:vp %p error %d", vp, 0);
497 497 return (0);
498 498 }
499 499
500 500 vp = TNTOV(tp);
501 501
502 502 do {
503 503 long diff;
504 504 long offset;
505 505
506 506 offset = uio->uio_offset;
507 507 pageoffset = offset & PAGEOFFSET;
508 508 bytes = MIN(PAGESIZE - pageoffset, uio->uio_resid);
509 509
510 510 diff = tp->tn_size - offset;
511 511
512 512 if (diff <= 0) {
513 513 error = 0;
514 514 goto out;
515 515 }
516 516 if (diff < bytes)
517 517 bytes = diff;
518 518
519 519 /*
520 520 * We have to drop the contents lock to allow the VM system
521 521 * to reacquire it in tmp_getpage() should the uiomove cause a
522 522 * pagefault.
523 523 */
524 524 rw_exit(&tp->tn_contents);
525 525
526 526 if (vpm_enable) {
527 527 /*
528 528 * Copy data.
529 529 */
530 530 error = vpm_data_copy(vp, offset, bytes, uio, 1, NULL,
531 531 0, S_READ);
532 532 } else {
533 533 segmap_offset = (offset & PAGEMASK) & MAXBOFFSET;
534 534 base = segmap_getmapflt(segkmap, vp, offset & MAXBMASK,
535 535 bytes, 1, S_READ);
536 536
537 537 error = uiomove(base + segmap_offset + pageoffset,
538 538 (long)bytes, UIO_READ, uio);
539 539 }
540 540
541 541 if (error) {
542 542 if (vpm_enable) {
543 543 (void) vpm_sync_pages(vp, offset, PAGESIZE, 0);
544 544 } else {
545 545 (void) segmap_release(segkmap, base, 0);
546 546 }
547 547 } else {
548 548 if (vpm_enable) {
549 549 error = vpm_sync_pages(vp, offset, PAGESIZE,
550 550 0);
551 551 } else {
552 552 error = segmap_release(segkmap, base, 0);
553 553 }
554 554 }
555 555
556 556 /*
557 557 * Re-acquire contents lock.
558 558 */
559 559 rw_enter(&tp->tn_contents, RW_READER);
560 560
561 561 } while (error == 0 && uio->uio_resid > 0);
562 562
563 563 out:
564 564 gethrestime(&tp->tn_atime);
565 565
566 566 /*
567 567 * If we've already done a partial read, terminate
568 568 * the read but return no error.
569 569 */
570 570 if (oresid != uio->uio_resid)
571 571 error = 0;
572 572
573 573 TRACE_2(TR_FAC_TMPFS, TR_TMPFS_RWTMP_END,
574 574 "tmp_rdtmp_end:vp %x error %d", vp, error);
575 575 return (error);
576 576 }
577 577
578 578 /* ARGSUSED2 */
579 579 static int
580 580 tmp_read(struct vnode *vp, struct uio *uiop, int ioflag, cred_t *cred,
581 581 struct caller_context *ct)
582 582 {
583 583 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
584 584 struct tmount *tm = (struct tmount *)VTOTM(vp);
585 585 int error;
586 586
587 587 /*
588 588 * We don't currently support reading non-regular files
589 589 */
590 590 if (vp->v_type == VDIR)
591 591 return (EISDIR);
592 592 if (vp->v_type != VREG)
593 593 return (EINVAL);
594 594 /*
595 595 * tmp_rwlock should have already been called from layers above
596 596 */
597 597 ASSERT(RW_READ_HELD(&tp->tn_rwlock));
598 598
599 599 rw_enter(&tp->tn_contents, RW_READER);
600 600
601 601 error = rdtmp(tm, tp, uiop, ct);
602 602
603 603 rw_exit(&tp->tn_contents);
604 604
605 605 return (error);
606 606 }
607 607
608 608 static int
609 609 tmp_write(struct vnode *vp, struct uio *uiop, int ioflag, struct cred *cred,
610 610 struct caller_context *ct)
611 611 {
612 612 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
613 613 struct tmount *tm = (struct tmount *)VTOTM(vp);
614 614 int error;
615 615
616 616 /*
617 617 * We don't currently support writing to non-regular files
618 618 */
619 619 if (vp->v_type != VREG)
620 620 return (EINVAL); /* XXX EISDIR? */
621 621
622 622 /*
623 623 * tmp_rwlock should have already been called from layers above
624 624 */
625 625 ASSERT(RW_WRITE_HELD(&tp->tn_rwlock));
626 626
627 627 rw_enter(&tp->tn_contents, RW_WRITER);
628 628
629 629 if (ioflag & FAPPEND) {
630 630 /*
631 631 * In append mode start at end of file.
632 632 */
633 633 uiop->uio_loffset = tp->tn_size;
634 634 }
635 635
636 636 error = wrtmp(tm, tp, uiop, cred, ct);
637 637
638 638 rw_exit(&tp->tn_contents);
639 639
640 640 return (error);
641 641 }
642 642
643 643 /* ARGSUSED */
644 644 static int
645 645 tmp_ioctl(
646 646 struct vnode *vp,
647 647 int com,
648 648 intptr_t data,
649 649 int flag,
650 650 struct cred *cred,
651 651 int *rvalp,
652 652 caller_context_t *ct)
653 653 {
654 654 return (ENOTTY);
655 655 }
656 656
657 657 /* ARGSUSED2 */
658 658 static int
659 659 tmp_getattr(
660 660 struct vnode *vp,
661 661 struct vattr *vap,
662 662 int flags,
663 663 struct cred *cred,
664 664 caller_context_t *ct)
665 665 {
666 666 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
667 667 struct vnode *mvp;
668 668 struct vattr va;
669 669 int attrs = 1;
670 670
671 671 /*
672 672 * A special case to handle the root tnode on a diskless nfs
673 673 * client who may have had its uid and gid inherited
674 674 * from an nfs vnode with nobody ownership. Likely the
675 675 * root filesystem. After nfs is fully functional the uid/gid
676 676 * may be mapable so ask again.
677 677 * vfsp can't get unmounted because we hold vp.
678 678 */
679 679 if (vp->v_flag & VROOT &&
680 680 (mvp = vp->v_vfsp->vfs_vnodecovered) != NULL) {
681 681 mutex_enter(&tp->tn_tlock);
682 682 if (tp->tn_uid == UID_NOBODY || tp->tn_gid == GID_NOBODY) {
683 683 mutex_exit(&tp->tn_tlock);
684 684 bzero(&va, sizeof (struct vattr));
685 685 va.va_mask = AT_UID|AT_GID;
686 686 attrs = VOP_GETATTR(mvp, &va, 0, cred, ct);
687 687 } else {
688 688 mutex_exit(&tp->tn_tlock);
689 689 }
690 690 }
691 691 mutex_enter(&tp->tn_tlock);
692 692 if (attrs == 0) {
693 693 tp->tn_uid = va.va_uid;
694 694 tp->tn_gid = va.va_gid;
695 695 }
696 696 vap->va_type = vp->v_type;
697 697 vap->va_mode = tp->tn_mode & MODEMASK;
698 698 vap->va_uid = tp->tn_uid;
699 699 vap->va_gid = tp->tn_gid;
700 700 vap->va_fsid = tp->tn_fsid;
701 701 vap->va_nodeid = (ino64_t)tp->tn_nodeid;
702 702 vap->va_nlink = tp->tn_nlink;
703 703 vap->va_size = (u_offset_t)tp->tn_size;
704 704 vap->va_atime = tp->tn_atime;
705 705 vap->va_mtime = tp->tn_mtime;
706 706 vap->va_ctime = tp->tn_ctime;
707 707 vap->va_blksize = PAGESIZE;
708 708 vap->va_rdev = tp->tn_rdev;
709 709 vap->va_seq = tp->tn_seq;
710 710
711 711 /*
712 712 * XXX Holes are not taken into account. We could take the time to
713 713 * run through the anon array looking for allocated slots...
714 714 */
715 715 vap->va_nblocks = (fsblkcnt64_t)btodb(ptob(btopr(vap->va_size)));
716 716 mutex_exit(&tp->tn_tlock);
717 717 return (0);
718 718 }
719 719
720 720 /*ARGSUSED4*/
721 721 static int
722 722 tmp_setattr(
723 723 struct vnode *vp,
724 724 struct vattr *vap,
725 725 int flags,
726 726 struct cred *cred,
727 727 caller_context_t *ct)
728 728 {
729 729 struct tmount *tm = (struct tmount *)VTOTM(vp);
730 730 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
731 731 int error = 0;
732 732 struct vattr *get;
733 733 long mask;
734 734
735 735 /*
736 736 * Cannot set these attributes
737 737 */
738 738 if ((vap->va_mask & AT_NOSET) || (vap->va_mask & AT_XVATTR))
739 739 return (EINVAL);
740 740
741 741 mutex_enter(&tp->tn_tlock);
742 742
743 743 get = &tp->tn_attr;
744 744 /*
745 745 * Change file access modes. Must be owner or have sufficient
746 746 * privileges.
747 747 */
748 748 error = secpolicy_vnode_setattr(cred, vp, vap, get, flags, tmp_taccess,
749 749 tp);
750 750
751 751 if (error)
752 752 goto out;
753 753
754 754 mask = vap->va_mask;
755 755
756 756 if (mask & AT_MODE) {
757 757 get->va_mode &= S_IFMT;
758 758 get->va_mode |= vap->va_mode & ~S_IFMT;
759 759 }
760 760
761 761 if (mask & AT_UID)
762 762 get->va_uid = vap->va_uid;
763 763 if (mask & AT_GID)
764 764 get->va_gid = vap->va_gid;
765 765 if (mask & AT_ATIME)
766 766 get->va_atime = vap->va_atime;
767 767 if (mask & AT_MTIME)
768 768 get->va_mtime = vap->va_mtime;
769 769
770 770 if (mask & (AT_UID | AT_GID | AT_MODE | AT_MTIME))
771 771 gethrestime(&tp->tn_ctime);
772 772
773 773 if (mask & AT_SIZE) {
774 774 ASSERT(vp->v_type != VDIR);
775 775
776 776 /* Don't support large files. */
777 777 if (vap->va_size > MAXOFF_T) {
778 778 error = EFBIG;
779 779 goto out;
780 780 }
781 781 mutex_exit(&tp->tn_tlock);
782 782
783 783 rw_enter(&tp->tn_rwlock, RW_WRITER);
784 784 rw_enter(&tp->tn_contents, RW_WRITER);
785 785 error = tmpnode_trunc(tm, tp, (ulong_t)vap->va_size);
786 786 rw_exit(&tp->tn_contents);
787 787 rw_exit(&tp->tn_rwlock);
788 788
789 789 if (error == 0 && vap->va_size == 0)
790 790 vnevent_truncate(vp, ct);
791 791
792 792 goto out1;
793 793 }
794 794 out:
795 795 mutex_exit(&tp->tn_tlock);
796 796 out1:
797 797 return (error);
798 798 }
799 799
800 800 /* ARGSUSED2 */
801 801 static int
802 802 tmp_access(
803 803 struct vnode *vp,
804 804 int mode,
805 805 int flags,
806 806 struct cred *cred,
807 807 caller_context_t *ct)
808 808 {
809 809 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
810 810 int error;
811 811
812 812 mutex_enter(&tp->tn_tlock);
813 813 error = tmp_taccess(tp, mode, cred);
814 814 mutex_exit(&tp->tn_tlock);
815 815 return (error);
816 816 }
817 817
818 818 /* ARGSUSED3 */
819 819 static int
820 820 tmp_lookup(
821 821 struct vnode *dvp,
822 822 char *nm,
823 823 struct vnode **vpp,
824 824 struct pathname *pnp,
825 825 int flags,
826 826 struct vnode *rdir,
827 827 struct cred *cred,
828 828 caller_context_t *ct,
829 829 int *direntflags,
830 830 pathname_t *realpnp)
831 831 {
832 832 struct tmpnode *tp = (struct tmpnode *)VTOTN(dvp);
833 833 struct tmpnode *ntp = NULL;
834 834 int error;
835 835
836 836
837 837 /* allow cd into @ dir */
838 838 if (flags & LOOKUP_XATTR) {
839 839 struct tmpnode *xdp;
840 840 struct tmount *tm;
841 841
842 842 /*
843 843 * don't allow attributes if not mounted XATTR support
844 844 */
845 845 if (!(dvp->v_vfsp->vfs_flag & VFS_XATTR))
846 846 return (EINVAL);
847 847
848 848 if (tp->tn_flags & ISXATTR)
849 849 /* No attributes on attributes */
850 850 return (EINVAL);
851 851
852 852 rw_enter(&tp->tn_rwlock, RW_WRITER);
853 853 if (tp->tn_xattrdp == NULL) {
854 854 if (!(flags & CREATE_XATTR_DIR)) {
855 855 rw_exit(&tp->tn_rwlock);
856 856 return (ENOENT);
857 857 }
858 858
859 859 /*
860 860 * No attribute directory exists for this
861 861 * node - create the attr dir as a side effect
862 862 * of this lookup.
863 863 */
864 864
865 865 /*
866 866 * Make sure we have adequate permission...
867 867 */
868 868
869 869 if ((error = tmp_taccess(tp, VWRITE, cred)) != 0) {
870 870 rw_exit(&tp->tn_rwlock);
871 871 return (error);
872 872 }
873 873
874 874 xdp = tmp_memalloc(sizeof (struct tmpnode),
875 875 TMP_MUSTHAVE);
876 876 tm = VTOTM(dvp);
877 877 tmpnode_init(tm, xdp, &tp->tn_attr, NULL);
878 878 /*
879 879 * Fix-up fields unique to attribute directories.
880 880 */
881 881 xdp->tn_flags = ISXATTR;
882 882 xdp->tn_type = VDIR;
883 883 if (tp->tn_type == VDIR) {
884 884 xdp->tn_mode = tp->tn_attr.va_mode;
885 885 } else {
886 886 xdp->tn_mode = 0700;
887 887 if (tp->tn_attr.va_mode & 0040)
888 888 xdp->tn_mode |= 0750;
889 889 if (tp->tn_attr.va_mode & 0004)
890 890 xdp->tn_mode |= 0705;
891 891 }
892 892 xdp->tn_vnode->v_type = VDIR;
893 893 xdp->tn_vnode->v_flag |= V_XATTRDIR;
894 894 tdirinit(tp, xdp);
895 895 tp->tn_xattrdp = xdp;
896 896 } else {
897 897 VN_HOLD(tp->tn_xattrdp->tn_vnode);
898 898 }
899 899 *vpp = TNTOV(tp->tn_xattrdp);
900 900 rw_exit(&tp->tn_rwlock);
901 901 return (0);
902 902 }
903 903
904 904 /*
905 905 * Null component name is a synonym for directory being searched.
906 906 */
907 907 if (*nm == '\0') {
908 908 VN_HOLD(dvp);
909 909 *vpp = dvp;
910 910 return (0);
911 911 }
912 912 ASSERT(tp);
913 913
914 914 error = tdirlookup(tp, nm, &ntp, cred);
915 915
916 916 if (error == 0) {
917 917 ASSERT(ntp);
918 918 *vpp = TNTOV(ntp);
919 919 /*
920 920 * If vnode is a device return special vnode instead
921 921 */
922 922 if (IS_DEVVP(*vpp)) {
923 923 struct vnode *newvp;
924 924
925 925 newvp = specvp(*vpp, (*vpp)->v_rdev, (*vpp)->v_type,
926 926 cred);
927 927 VN_RELE(*vpp);
928 928 *vpp = newvp;
929 929 }
930 930 }
931 931 TRACE_4(TR_FAC_TMPFS, TR_TMPFS_LOOKUP,
932 932 "tmpfs lookup:vp %p name %s vpp %p error %d",
933 933 dvp, nm, vpp, error);
934 934 return (error);
935 935 }
936 936
937 937 /*ARGSUSED7*/
938 938 static int
939 939 tmp_create(
940 940 struct vnode *dvp,
941 941 char *nm,
942 942 struct vattr *vap,
943 943 enum vcexcl exclusive,
944 944 int mode,
945 945 struct vnode **vpp,
946 946 struct cred *cred,
947 947 int flag,
948 948 caller_context_t *ct,
949 949 vsecattr_t *vsecp)
950 950 {
951 951 struct tmpnode *parent;
952 952 struct tmount *tm;
953 953 struct tmpnode *self;
954 954 int error;
955 955 struct tmpnode *oldtp;
956 956
957 957 again:
958 958 parent = (struct tmpnode *)VTOTN(dvp);
959 959 tm = (struct tmount *)VTOTM(dvp);
960 960 self = NULL;
961 961 error = 0;
962 962 oldtp = NULL;
963 963
964 964 /* device files not allowed in ext. attr dirs */
965 965 if ((parent->tn_flags & ISXATTR) &&
966 966 (vap->va_type == VBLK || vap->va_type == VCHR ||
967 967 vap->va_type == VFIFO || vap->va_type == VDOOR ||
968 968 vap->va_type == VSOCK || vap->va_type == VPORT))
969 969 return (EINVAL);
970 970
971 971 if (vap->va_type == VREG && (vap->va_mode & VSVTX)) {
972 972 /* Must be privileged to set sticky bit */
973 973 if (secpolicy_vnode_stky_modify(cred))
974 974 vap->va_mode &= ~VSVTX;
975 975 } else if (vap->va_type == VNON) {
976 976 return (EINVAL);
977 977 }
978 978
979 979 /*
980 980 * Null component name is a synonym for directory being searched.
981 981 */
982 982 if (*nm == '\0') {
983 983 VN_HOLD(dvp);
984 984 oldtp = parent;
985 985 } else {
986 986 error = tdirlookup(parent, nm, &oldtp, cred);
987 987 }
988 988
989 989 if (error == 0) { /* name found */
990 990 boolean_t trunc = B_FALSE;
991 991
992 992 ASSERT(oldtp);
993 993
994 994 rw_enter(&oldtp->tn_rwlock, RW_WRITER);
995 995
996 996 /*
997 997 * if create/read-only an existing
998 998 * directory, allow it
999 999 */
1000 1000 if (exclusive == EXCL)
1001 1001 error = EEXIST;
1002 1002 else if ((oldtp->tn_type == VDIR) && (mode & VWRITE))
1003 1003 error = EISDIR;
1004 1004 else {
1005 1005 error = tmp_taccess(oldtp, mode, cred);
1006 1006 }
1007 1007
1008 1008 if (error) {
1009 1009 rw_exit(&oldtp->tn_rwlock);
1010 1010 tmpnode_rele(oldtp);
1011 1011 return (error);
1012 1012 }
1013 1013 *vpp = TNTOV(oldtp);
1014 1014 if ((*vpp)->v_type == VREG && (vap->va_mask & AT_SIZE) &&
1015 1015 vap->va_size == 0) {
1016 1016 rw_enter(&oldtp->tn_contents, RW_WRITER);
1017 1017 (void) tmpnode_trunc(tm, oldtp, 0);
1018 1018 rw_exit(&oldtp->tn_contents);
1019 1019 trunc = B_TRUE;
1020 1020 }
1021 1021 rw_exit(&oldtp->tn_rwlock);
1022 1022 if (IS_DEVVP(*vpp)) {
1023 1023 struct vnode *newvp;
1024 1024
1025 1025 newvp = specvp(*vpp, (*vpp)->v_rdev, (*vpp)->v_type,
1026 1026 cred);
1027 1027 VN_RELE(*vpp);
1028 1028 if (newvp == NULL) {
1029 1029 return (ENOSYS);
1030 1030 }
1031 1031 *vpp = newvp;
1032 1032 }
1033 1033
1034 1034 if (trunc)
1035 1035 vnevent_create(*vpp, ct);
1036 1036
1037 1037 return (0);
1038 1038 }
1039 1039
1040 1040 if (error != ENOENT)
1041 1041 return (error);
1042 1042
1043 1043 rw_enter(&parent->tn_rwlock, RW_WRITER);
1044 1044 error = tdirenter(tm, parent, nm, DE_CREATE,
1045 1045 (struct tmpnode *)NULL, (struct tmpnode *)NULL,
1046 1046 vap, &self, cred, ct);
1047 1047 rw_exit(&parent->tn_rwlock);
1048 1048
1049 1049 if (error) {
1050 1050 if (self)
1051 1051 tmpnode_rele(self);
1052 1052
1053 1053 if (error == EEXIST) {
1054 1054 /*
1055 1055 * This means that the file was created sometime
1056 1056 * after we checked and did not find it and when
1057 1057 * we went to create it.
1058 1058 * Since creat() is supposed to truncate a file
1059 1059 * that already exits go back to the begining
1060 1060 * of the function. This time we will find it
1061 1061 * and go down the tmp_trunc() path
1062 1062 */
1063 1063 goto again;
1064 1064 }
1065 1065 return (error);
1066 1066 }
1067 1067
1068 1068 *vpp = TNTOV(self);
1069 1069
1070 1070 if (!error && IS_DEVVP(*vpp)) {
1071 1071 struct vnode *newvp;
1072 1072
1073 1073 newvp = specvp(*vpp, (*vpp)->v_rdev, (*vpp)->v_type, cred);
1074 1074 VN_RELE(*vpp);
1075 1075 if (newvp == NULL)
1076 1076 return (ENOSYS);
1077 1077 *vpp = newvp;
1078 1078 }
1079 1079 TRACE_3(TR_FAC_TMPFS, TR_TMPFS_CREATE,
1080 1080 "tmpfs create:dvp %p nm %s vpp %p", dvp, nm, vpp);
1081 1081 return (0);
1082 1082 }
1083 1083
1084 1084 /* ARGSUSED3 */
1085 1085 static int
1086 1086 tmp_remove(
1087 1087 struct vnode *dvp,
1088 1088 char *nm,
1089 1089 struct cred *cred,
1090 1090 caller_context_t *ct,
1091 1091 int flags)
1092 1092 {
1093 1093 struct tmpnode *parent = (struct tmpnode *)VTOTN(dvp);
1094 1094 int error;
1095 1095 struct tmpnode *tp = NULL;
1096 1096
1097 1097 error = tdirlookup(parent, nm, &tp, cred);
1098 1098 if (error)
1099 1099 return (error);
1100 1100
1101 1101 ASSERT(tp);
1102 1102 rw_enter(&parent->tn_rwlock, RW_WRITER);
1103 1103 rw_enter(&tp->tn_rwlock, RW_WRITER);
1104 1104
1105 1105 if (tp->tn_type != VDIR ||
1106 1106 (error = secpolicy_fs_linkdir(cred, dvp->v_vfsp)) == 0)
1107 1107 error = tdirdelete(parent, tp, nm, DR_REMOVE, cred);
1108 1108
1109 1109 rw_exit(&tp->tn_rwlock);
1110 1110 rw_exit(&parent->tn_rwlock);
1111 1111 vnevent_remove(TNTOV(tp), dvp, nm, ct);
1112 1112 tmpnode_rele(tp);
1113 1113
1114 1114 TRACE_3(TR_FAC_TMPFS, TR_TMPFS_REMOVE,
1115 1115 "tmpfs remove:dvp %p nm %s error %d", dvp, nm, error);
1116 1116 return (error);
1117 1117 }
1118 1118
1119 1119 /* ARGSUSED4 */
1120 1120 static int
1121 1121 tmp_link(
1122 1122 struct vnode *dvp,
1123 1123 struct vnode *srcvp,
1124 1124 char *tnm,
1125 1125 struct cred *cred,
1126 1126 caller_context_t *ct,
1127 1127 int flags)
1128 1128 {
1129 1129 struct tmpnode *parent;
1130 1130 struct tmpnode *from;
1131 1131 struct tmount *tm = (struct tmount *)VTOTM(dvp);
1132 1132 int error;
1133 1133 struct tmpnode *found = NULL;
1134 1134 struct vnode *realvp;
1135 1135
1136 1136 if (VOP_REALVP(srcvp, &realvp, ct) == 0)
1137 1137 srcvp = realvp;
1138 1138
1139 1139 parent = (struct tmpnode *)VTOTN(dvp);
1140 1140 from = (struct tmpnode *)VTOTN(srcvp);
1141 1141
1142 1142 if ((srcvp->v_type == VDIR &&
1143 1143 secpolicy_fs_linkdir(cred, dvp->v_vfsp)) ||
1144 1144 (from->tn_uid != crgetuid(cred) && secpolicy_basic_link(cred)))
1145 1145 return (EPERM);
1146 1146
1147 1147 /*
1148 1148 * Make sure link for extended attributes is valid
1149 1149 * We only support hard linking of xattr's in xattrdir to an xattrdir
1150 1150 */
1151 1151 if ((from->tn_flags & ISXATTR) != (parent->tn_flags & ISXATTR))
1152 1152 return (EINVAL);
1153 1153
1154 1154 error = tdirlookup(parent, tnm, &found, cred);
1155 1155 if (error == 0) {
1156 1156 ASSERT(found);
1157 1157 tmpnode_rele(found);
1158 1158 return (EEXIST);
1159 1159 }
1160 1160
1161 1161 if (error != ENOENT)
1162 1162 return (error);
1163 1163
1164 1164 rw_enter(&parent->tn_rwlock, RW_WRITER);
1165 1165 error = tdirenter(tm, parent, tnm, DE_LINK, (struct tmpnode *)NULL,
1166 1166 from, NULL, (struct tmpnode **)NULL, cred, ct);
1167 1167 rw_exit(&parent->tn_rwlock);
1168 1168 if (error == 0) {
1169 1169 vnevent_link(srcvp, ct);
1170 1170 }
1171 1171 return (error);
1172 1172 }
1173 1173
1174 1174 /* ARGSUSED5 */
1175 1175 static int
1176 1176 tmp_rename(
1177 1177 struct vnode *odvp, /* source parent vnode */
1178 1178 char *onm, /* source name */
1179 1179 struct vnode *ndvp, /* destination parent vnode */
1180 1180 char *nnm, /* destination name */
1181 1181 struct cred *cred,
1182 1182 caller_context_t *ct,
1183 1183 int flags)
1184 1184 {
1185 1185 struct tmpnode *fromparent;
1186 1186 struct tmpnode *toparent;
1187 1187 struct tmpnode *fromtp = NULL; /* source tmpnode */
1188 1188 struct tmount *tm = (struct tmount *)VTOTM(odvp);
1189 1189 int error;
1190 1190 int samedir = 0; /* set if odvp == ndvp */
1191 1191 struct vnode *realvp;
1192 1192
1193 1193 if (VOP_REALVP(ndvp, &realvp, ct) == 0)
1194 1194 ndvp = realvp;
1195 1195
1196 1196 fromparent = (struct tmpnode *)VTOTN(odvp);
1197 1197 toparent = (struct tmpnode *)VTOTN(ndvp);
1198 1198
1199 1199 if ((fromparent->tn_flags & ISXATTR) != (toparent->tn_flags & ISXATTR))
1200 1200 return (EINVAL);
1201 1201
1202 1202 mutex_enter(&tm->tm_renamelck);
1203 1203
1204 1204 /*
1205 1205 * Look up tmpnode of file we're supposed to rename.
1206 1206 */
1207 1207 error = tdirlookup(fromparent, onm, &fromtp, cred);
1208 1208 if (error) {
1209 1209 mutex_exit(&tm->tm_renamelck);
1210 1210 return (error);
1211 1211 }
1212 1212
1213 1213 /*
1214 1214 * Make sure we can delete the old (source) entry. This
1215 1215 * requires write permission on the containing directory. If
1216 1216 * that directory is "sticky" it requires further checks.
1217 1217 */
1218 1218 if (((error = tmp_taccess(fromparent, VWRITE, cred)) != 0) ||
1219 1219 (error = tmp_sticky_remove_access(fromparent, fromtp, cred)) != 0)
1220 1220 goto done;
1221 1221
1222 1222 /*
1223 1223 * Check for renaming to or from '.' or '..' or that
1224 1224 * fromtp == fromparent
1225 1225 */
1226 1226 if ((onm[0] == '.' &&
1227 1227 (onm[1] == '\0' || (onm[1] == '.' && onm[2] == '\0'))) ||
1228 1228 (nnm[0] == '.' &&
1229 1229 (nnm[1] == '\0' || (nnm[1] == '.' && nnm[2] == '\0'))) ||
1230 1230 (fromparent == fromtp)) {
1231 1231 error = EINVAL;
1232 1232 goto done;
1233 1233 }
1234 1234
1235 1235 samedir = (fromparent == toparent);
1236 1236 /*
1237 1237 * Make sure we can search and rename into the new
1238 1238 * (destination) directory.
1239 1239 */
1240 1240 if (!samedir) {
1241 1241 error = tmp_taccess(toparent, VEXEC|VWRITE, cred);
1242 1242 if (error)
1243 1243 goto done;
1244 1244 }
1245 1245
1246 1246 /*
1247 1247 * Link source to new target
1248 1248 */
1249 1249 rw_enter(&toparent->tn_rwlock, RW_WRITER);
1250 1250 error = tdirenter(tm, toparent, nnm, DE_RENAME,
1251 1251 fromparent, fromtp, (struct vattr *)NULL,
1252 1252 (struct tmpnode **)NULL, cred, ct);
1253 1253 rw_exit(&toparent->tn_rwlock);
1254 1254
1255 1255 if (error) {
1256 1256 /*
1257 1257 * ESAME isn't really an error; it indicates that the
1258 1258 * operation should not be done because the source and target
1259 1259 * are the same file, but that no error should be reported.
1260 1260 */
1261 1261 if (error == ESAME)
1262 1262 error = 0;
1263 1263 goto done;
1264 1264 }
1265 1265 vnevent_rename_src(TNTOV(fromtp), odvp, onm, ct);
1266 1266
1267 1267 /*
1268 1268 * Notify the target directory if not same as
1269 1269 * source directory.
1270 1270 */
1271 1271 if (ndvp != odvp) {
1272 1272 vnevent_rename_dest_dir(ndvp, ct);
1273 1273 }
1274 1274
1275 1275 /*
1276 1276 * Unlink from source.
1277 1277 */
1278 1278 rw_enter(&fromparent->tn_rwlock, RW_WRITER);
1279 1279 rw_enter(&fromtp->tn_rwlock, RW_WRITER);
1280 1280
1281 1281 error = tdirdelete(fromparent, fromtp, onm, DR_RENAME, cred);
1282 1282
1283 1283 /*
1284 1284 * The following handles the case where our source tmpnode was
1285 1285 * removed before we got to it.
1286 1286 *
1287 1287 * XXX We should also cleanup properly in the case where tdirdelete
1288 1288 * fails for some other reason. Currently this case shouldn't happen.
1289 1289 * (see 1184991).
1290 1290 */
1291 1291 if (error == ENOENT)
1292 1292 error = 0;
1293 1293
1294 1294 rw_exit(&fromtp->tn_rwlock);
1295 1295 rw_exit(&fromparent->tn_rwlock);
1296 1296 done:
1297 1297 tmpnode_rele(fromtp);
1298 1298 mutex_exit(&tm->tm_renamelck);
1299 1299
1300 1300 TRACE_5(TR_FAC_TMPFS, TR_TMPFS_RENAME,
1301 1301 "tmpfs rename:ovp %p onm %s nvp %p nnm %s error %d", odvp, onm,
1302 1302 ndvp, nnm, error);
1303 1303 return (error);
1304 1304 }
1305 1305
1306 1306 /* ARGSUSED5 */
1307 1307 static int
1308 1308 tmp_mkdir(
1309 1309 struct vnode *dvp,
1310 1310 char *nm,
1311 1311 struct vattr *va,
1312 1312 struct vnode **vpp,
1313 1313 struct cred *cred,
1314 1314 caller_context_t *ct,
1315 1315 int flags,
1316 1316 vsecattr_t *vsecp)
1317 1317 {
1318 1318 struct tmpnode *parent = (struct tmpnode *)VTOTN(dvp);
1319 1319 struct tmpnode *self = NULL;
1320 1320 struct tmount *tm = (struct tmount *)VTOTM(dvp);
1321 1321 int error;
1322 1322
1323 1323 /* no new dirs allowed in xattr dirs */
1324 1324 if (parent->tn_flags & ISXATTR)
1325 1325 return (EINVAL);
1326 1326
1327 1327 /*
1328 1328 * Might be dangling directory. Catch it here,
1329 1329 * because a ENOENT return from tdirlookup() is
1330 1330 * an "o.k. return".
1331 1331 */
1332 1332 if (parent->tn_nlink == 0)
1333 1333 return (ENOENT);
1334 1334
1335 1335 error = tdirlookup(parent, nm, &self, cred);
1336 1336 if (error == 0) {
1337 1337 ASSERT(self);
1338 1338 tmpnode_rele(self);
1339 1339 return (EEXIST);
1340 1340 }
1341 1341 if (error != ENOENT)
1342 1342 return (error);
1343 1343
1344 1344 rw_enter(&parent->tn_rwlock, RW_WRITER);
1345 1345 error = tdirenter(tm, parent, nm, DE_MKDIR, (struct tmpnode *)NULL,
1346 1346 (struct tmpnode *)NULL, va, &self, cred, ct);
1347 1347 if (error) {
1348 1348 rw_exit(&parent->tn_rwlock);
1349 1349 if (self)
1350 1350 tmpnode_rele(self);
1351 1351 return (error);
1352 1352 }
1353 1353 rw_exit(&parent->tn_rwlock);
1354 1354 *vpp = TNTOV(self);
1355 1355 return (0);
1356 1356 }
1357 1357
1358 1358 /* ARGSUSED4 */
1359 1359 static int
1360 1360 tmp_rmdir(
1361 1361 struct vnode *dvp,
1362 1362 char *nm,
1363 1363 struct vnode *cdir,
1364 1364 struct cred *cred,
1365 1365 caller_context_t *ct,
1366 1366 int flags)
1367 1367 {
1368 1368 struct tmpnode *parent = (struct tmpnode *)VTOTN(dvp);
1369 1369 struct tmpnode *self = NULL;
1370 1370 struct vnode *vp;
1371 1371 int error = 0;
1372 1372
1373 1373 /*
1374 1374 * Return error when removing . and ..
1375 1375 */
1376 1376 if (strcmp(nm, ".") == 0)
1377 1377 return (EINVAL);
1378 1378 if (strcmp(nm, "..") == 0)
1379 1379 return (EEXIST); /* Should be ENOTEMPTY */
1380 1380 error = tdirlookup(parent, nm, &self, cred);
1381 1381 if (error)
1382 1382 return (error);
1383 1383
1384 1384 rw_enter(&parent->tn_rwlock, RW_WRITER);
1385 1385 rw_enter(&self->tn_rwlock, RW_WRITER);
1386 1386
1387 1387 vp = TNTOV(self);
1388 1388 if (vp == dvp || vp == cdir) {
1389 1389 error = EINVAL;
1390 1390 goto done1;
1391 1391 }
1392 1392 if (self->tn_type != VDIR) {
1393 1393 error = ENOTDIR;
1394 1394 goto done1;
1395 1395 }
1396 1396
1397 1397 mutex_enter(&self->tn_tlock);
1398 1398 if (self->tn_nlink > 2) {
1399 1399 mutex_exit(&self->tn_tlock);
1400 1400 error = EEXIST;
1401 1401 goto done1;
1402 1402 }
1403 1403 mutex_exit(&self->tn_tlock);
1404 1404
1405 1405 if (vn_vfswlock(vp)) {
1406 1406 error = EBUSY;
1407 1407 goto done1;
1408 1408 }
1409 1409 if (vn_mountedvfs(vp) != NULL) {
1410 1410 error = EBUSY;
1411 1411 goto done;
1412 1412 }
1413 1413
1414 1414 /*
1415 1415 * Check for an empty directory
1416 1416 * i.e. only includes entries for "." and ".."
1417 1417 */
1418 1418 if (self->tn_dirents > 2) {
1419 1419 error = EEXIST; /* SIGH should be ENOTEMPTY */
1420 1420 /*
1421 1421 * Update atime because checking tn_dirents is logically
1422 1422 * equivalent to reading the directory
1423 1423 */
1424 1424 gethrestime(&self->tn_atime);
1425 1425 goto done;
1426 1426 }
1427 1427
1428 1428 error = tdirdelete(parent, self, nm, DR_RMDIR, cred);
1429 1429 done:
1430 1430 vn_vfsunlock(vp);
1431 1431 done1:
1432 1432 rw_exit(&self->tn_rwlock);
1433 1433 rw_exit(&parent->tn_rwlock);
1434 1434 vnevent_rmdir(TNTOV(self), dvp, nm, ct);
1435 1435 tmpnode_rele(self);
1436 1436
1437 1437 return (error);
1438 1438 }
1439 1439
1440 1440 /* ARGSUSED2 */
1441 1441 static int
1442 1442 tmp_readdir(
1443 1443 struct vnode *vp,
1444 1444 struct uio *uiop,
1445 1445 struct cred *cred,
1446 1446 int *eofp,
1447 1447 caller_context_t *ct,
1448 1448 int flags)
1449 1449 {
1450 1450 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
1451 1451 struct tdirent *tdp;
1452 1452 int error = 0;
1453 1453 size_t namelen;
1454 1454 struct dirent64 *dp;
1455 1455 ulong_t offset;
1456 1456 ulong_t total_bytes_wanted;
1457 1457 long outcount = 0;
1458 1458 long bufsize;
1459 1459 int reclen;
1460 1460 caddr_t outbuf;
1461 1461
1462 1462 if (uiop->uio_loffset >= MAXOFF_T) {
1463 1463 if (eofp)
1464 1464 *eofp = 1;
1465 1465 return (0);
1466 1466 }
1467 1467 /*
1468 1468 * assuming system call has already called tmp_rwlock
1469 1469 */
1470 1470 ASSERT(RW_READ_HELD(&tp->tn_rwlock));
1471 1471
1472 1472 if (uiop->uio_iovcnt != 1)
1473 1473 return (EINVAL);
1474 1474
1475 1475 if (vp->v_type != VDIR)
1476 1476 return (ENOTDIR);
1477 1477
1478 1478 /*
1479 1479 * There's a window here where someone could have removed
1480 1480 * all the entries in the directory after we put a hold on the
1481 1481 * vnode but before we grabbed the rwlock. Just return.
1482 1482 */
1483 1483 if (tp->tn_dir == NULL) {
1484 1484 if (tp->tn_nlink) {
1485 1485 panic("empty directory 0x%p", (void *)tp);
1486 1486 /*NOTREACHED*/
1487 1487 }
1488 1488 return (0);
1489 1489 }
1490 1490
1491 1491 /*
1492 1492 * Get space for multiple directory entries
1493 1493 */
1494 1494 total_bytes_wanted = uiop->uio_iov->iov_len;
1495 1495 bufsize = total_bytes_wanted + sizeof (struct dirent64);
1496 1496 outbuf = kmem_alloc(bufsize, KM_SLEEP);
1497 1497
1498 1498 dp = (struct dirent64 *)outbuf;
1499 1499
1500 1500
1501 1501 offset = 0;
1502 1502 tdp = tp->tn_dir;
1503 1503 while (tdp) {
1504 1504 namelen = strlen(tdp->td_name); /* no +1 needed */
1505 1505 offset = tdp->td_offset;
1506 1506 if (offset >= uiop->uio_offset) {
1507 1507 reclen = (int)DIRENT64_RECLEN(namelen);
1508 1508 if (outcount + reclen > total_bytes_wanted) {
1509 1509 if (!outcount)
1510 1510 /*
1511 1511 * Buffer too small for any entries.
1512 1512 */
1513 1513 error = EINVAL;
1514 1514 break;
1515 1515 }
1516 1516 ASSERT(tdp->td_tmpnode != NULL);
1517 1517
1518 1518 /* use strncpy(9f) to zero out uninitialized bytes */
1519 1519
1520 1520 (void) strncpy(dp->d_name, tdp->td_name,
1521 1521 DIRENT64_NAMELEN(reclen));
1522 1522 dp->d_reclen = (ushort_t)reclen;
1523 1523 dp->d_ino = (ino64_t)tdp->td_tmpnode->tn_nodeid;
1524 1524 dp->d_off = (offset_t)tdp->td_offset + 1;
1525 1525 dp = (struct dirent64 *)
1526 1526 ((uintptr_t)dp + dp->d_reclen);
1527 1527 outcount += reclen;
1528 1528 ASSERT(outcount <= bufsize);
1529 1529 }
1530 1530 tdp = tdp->td_next;
1531 1531 }
1532 1532
1533 1533 if (!error)
1534 1534 error = uiomove(outbuf, outcount, UIO_READ, uiop);
1535 1535
1536 1536 if (!error) {
1537 1537 /* If we reached the end of the list our offset */
1538 1538 /* should now be just past the end. */
1539 1539 if (!tdp) {
1540 1540 offset += 1;
1541 1541 if (eofp)
1542 1542 *eofp = 1;
1543 1543 } else if (eofp)
1544 1544 *eofp = 0;
1545 1545 uiop->uio_offset = offset;
1546 1546 }
1547 1547 gethrestime(&tp->tn_atime);
1548 1548 kmem_free(outbuf, bufsize);
1549 1549 return (error);
1550 1550 }
1551 1551
1552 1552 /* ARGSUSED5 */
1553 1553 static int
1554 1554 tmp_symlink(
1555 1555 struct vnode *dvp,
1556 1556 char *lnm,
1557 1557 struct vattr *tva,
1558 1558 char *tnm,
1559 1559 struct cred *cred,
1560 1560 caller_context_t *ct,
1561 1561 int flags)
1562 1562 {
1563 1563 struct tmpnode *parent = (struct tmpnode *)VTOTN(dvp);
1564 1564 struct tmpnode *self = (struct tmpnode *)NULL;
1565 1565 struct tmount *tm = (struct tmount *)VTOTM(dvp);
1566 1566 char *cp = NULL;
1567 1567 int error;
1568 1568 size_t len;
1569 1569
1570 1570 /* no symlinks allowed to files in xattr dirs */
1571 1571 if (parent->tn_flags & ISXATTR)
1572 1572 return (EINVAL);
1573 1573
1574 1574 error = tdirlookup(parent, lnm, &self, cred);
1575 1575 if (error == 0) {
1576 1576 /*
1577 1577 * The entry already exists
1578 1578 */
1579 1579 tmpnode_rele(self);
1580 1580 return (EEXIST); /* was 0 */
1581 1581 }
1582 1582
1583 1583 if (error != ENOENT) {
1584 1584 if (self != NULL)
1585 1585 tmpnode_rele(self);
1586 1586 return (error);
1587 1587 }
1588 1588
1589 1589 rw_enter(&parent->tn_rwlock, RW_WRITER);
1590 1590 error = tdirenter(tm, parent, lnm, DE_CREATE, (struct tmpnode *)NULL,
1591 1591 (struct tmpnode *)NULL, tva, &self, cred, ct);
1592 1592 rw_exit(&parent->tn_rwlock);
1593 1593
1594 1594 if (error) {
1595 1595 if (self)
1596 1596 tmpnode_rele(self);
1597 1597 return (error);
1598 1598 }
1599 1599 len = strlen(tnm) + 1;
1600 1600 cp = tmp_memalloc(len, 0);
1601 1601 if (cp == NULL) {
1602 1602 tmpnode_rele(self);
1603 1603 return (ENOSPC);
1604 1604 }
1605 1605 (void) strcpy(cp, tnm);
1606 1606
1607 1607 self->tn_symlink = cp;
1608 1608 self->tn_size = len - 1;
1609 1609 tmpnode_rele(self);
1610 1610 return (error);
1611 1611 }
1612 1612
1613 1613 /* ARGSUSED2 */
1614 1614 static int
1615 1615 tmp_readlink(
1616 1616 struct vnode *vp,
1617 1617 struct uio *uiop,
1618 1618 struct cred *cred,
1619 1619 caller_context_t *ct)
1620 1620 {
1621 1621 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
1622 1622 int error = 0;
1623 1623
1624 1624 if (vp->v_type != VLNK)
1625 1625 return (EINVAL);
1626 1626
1627 1627 rw_enter(&tp->tn_rwlock, RW_READER);
1628 1628 rw_enter(&tp->tn_contents, RW_READER);
1629 1629 error = uiomove(tp->tn_symlink, tp->tn_size, UIO_READ, uiop);
1630 1630 gethrestime(&tp->tn_atime);
1631 1631 rw_exit(&tp->tn_contents);
1632 1632 rw_exit(&tp->tn_rwlock);
1633 1633 return (error);
1634 1634 }
1635 1635
1636 1636 /* ARGSUSED */
1637 1637 static int
1638 1638 tmp_fsync(
1639 1639 struct vnode *vp,
1640 1640 int syncflag,
1641 1641 struct cred *cred,
1642 1642 caller_context_t *ct)
1643 1643 {
1644 1644 return (0);
1645 1645 }
1646 1646
1647 1647 /* ARGSUSED */
1648 1648 static void
1649 1649 tmp_inactive(struct vnode *vp, struct cred *cred, caller_context_t *ct)
1650 1650 {
1651 1651 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
1652 1652 struct tmount *tm = (struct tmount *)VFSTOTM(vp->v_vfsp);
1653 1653
1654 1654 rw_enter(&tp->tn_rwlock, RW_WRITER);
1655 1655 top:
1656 1656 mutex_enter(&tp->tn_tlock);
1657 1657 mutex_enter(&vp->v_lock);
1658 1658 ASSERT(vp->v_count >= 1);
1659 1659
1660 1660 /*
1661 1661 * If we don't have the last hold or the link count is non-zero,
1662 1662 * there's little to do -- just drop our hold.
1663 1663 */
1664 1664 if (vp->v_count > 1 || tp->tn_nlink != 0) {
1665 1665 vp->v_count--;
1666 1666 mutex_exit(&vp->v_lock);
1667 1667 mutex_exit(&tp->tn_tlock);
1668 1668 rw_exit(&tp->tn_rwlock);
1669 1669 return;
1670 1670 }
1671 1671
1672 1672 /*
1673 1673 * We have the last hold *and* the link count is zero, so this
1674 1674 * tmpnode is dead from the filesystem's viewpoint. However,
1675 1675 * if the tmpnode has any pages associated with it (i.e. if it's
1676 1676 * a normal file with non-zero size), the tmpnode can still be
1677 1677 * discovered by pageout or fsflush via the page vnode pointers.
1678 1678 * In this case we must drop all our locks, truncate the tmpnode,
1679 1679 * and try the whole dance again.
1680 1680 */
1681 1681 if (tp->tn_size != 0) {
1682 1682 if (tp->tn_type == VREG) {
1683 1683 mutex_exit(&vp->v_lock);
1684 1684 mutex_exit(&tp->tn_tlock);
1685 1685 rw_enter(&tp->tn_contents, RW_WRITER);
1686 1686 (void) tmpnode_trunc(tm, tp, 0);
1687 1687 rw_exit(&tp->tn_contents);
1688 1688 ASSERT(tp->tn_size == 0);
1689 1689 ASSERT(tp->tn_nblocks == 0);
1690 1690 goto top;
1691 1691 }
1692 1692 if (tp->tn_type == VLNK)
1693 1693 tmp_memfree(tp->tn_symlink, tp->tn_size + 1);
1694 1694 }
1695 1695
1696 1696 /*
1697 1697 * Remove normal file/dir's xattr dir and xattrs.
1698 1698 */
1699 1699 if (tp->tn_xattrdp) {
1700 1700 struct tmpnode *xtp = tp->tn_xattrdp;
1701 1701
1702 1702 ASSERT(xtp->tn_flags & ISXATTR);
1703 1703 tmpnode_hold(xtp);
1704 1704 rw_enter(&xtp->tn_rwlock, RW_WRITER);
1705 1705 tdirtrunc(xtp);
1706 1706 DECR_COUNT(&xtp->tn_nlink, &xtp->tn_tlock);
1707 1707 tp->tn_xattrdp = NULL;
1708 1708 rw_exit(&xtp->tn_rwlock);
1709 1709 tmpnode_rele(xtp);
1710 1710 }
1711 1711
1712 1712 mutex_exit(&vp->v_lock);
1713 1713 mutex_exit(&tp->tn_tlock);
1714 1714 /* Here's our chance to send invalid event while we're between locks */
1715 1715 vn_invalid(TNTOV(tp));
1716 1716 mutex_enter(&tm->tm_contents);
1717 1717 if (tp->tn_forw == NULL)
1718 1718 tm->tm_rootnode->tn_back = tp->tn_back;
1719 1719 else
1720 1720 tp->tn_forw->tn_back = tp->tn_back;
1721 1721 tp->tn_back->tn_forw = tp->tn_forw;
1722 1722 mutex_exit(&tm->tm_contents);
1723 1723 rw_exit(&tp->tn_rwlock);
1724 1724 rw_destroy(&tp->tn_rwlock);
1725 1725 mutex_destroy(&tp->tn_tlock);
1726 1726 vn_free(TNTOV(tp));
1727 1727 tmp_memfree(tp, sizeof (struct tmpnode));
1728 1728 }
1729 1729
1730 1730 /* ARGSUSED2 */
1731 1731 static int
1732 1732 tmp_fid(struct vnode *vp, struct fid *fidp, caller_context_t *ct)
1733 1733 {
1734 1734 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
1735 1735 struct tfid *tfid;
1736 1736
1737 1737 if (fidp->fid_len < (sizeof (struct tfid) - sizeof (ushort_t))) {
1738 1738 fidp->fid_len = sizeof (struct tfid) - sizeof (ushort_t);
1739 1739 return (ENOSPC);
1740 1740 }
1741 1741
1742 1742 tfid = (struct tfid *)fidp;
1743 1743 bzero(tfid, sizeof (struct tfid));
1744 1744 tfid->tfid_len = (int)sizeof (struct tfid) - sizeof (ushort_t);
1745 1745
1746 1746 tfid->tfid_ino = tp->tn_nodeid;
1747 1747 tfid->tfid_gen = tp->tn_gen;
1748 1748
1749 1749 return (0);
1750 1750 }
1751 1751
1752 1752
1753 1753 /*
1754 1754 * Return all the pages from [off..off+len] in given file
1755 1755 */
1756 1756 /* ARGSUSED */
1757 1757 static int
1758 1758 tmp_getpage(
1759 1759 struct vnode *vp,
1760 1760 offset_t off,
1761 1761 size_t len,
1762 1762 uint_t *protp,
1763 1763 page_t *pl[],
1764 1764 size_t plsz,
1765 1765 struct seg *seg,
1766 1766 caddr_t addr,
1767 1767 enum seg_rw rw,
1768 1768 struct cred *cr,
1769 1769 caller_context_t *ct)
1770 1770 {
1771 1771 int err = 0;
1772 1772 struct tmpnode *tp = VTOTN(vp);
1773 1773 anoff_t toff = (anoff_t)off;
1774 1774 size_t tlen = len;
1775 1775 u_offset_t tmpoff;
1776 1776 timestruc_t now;
1777 1777
1778 1778 rw_enter(&tp->tn_contents, RW_READER);
1779 1779
1780 1780 if (off + len > tp->tn_size + PAGEOFFSET) {
1781 1781 err = EFAULT;
1782 1782 goto out;
1783 1783 }
1784 1784 /*
1785 1785 * Look for holes (no anon slot) in faulting range. If there are
1786 1786 * holes we have to switch to a write lock and fill them in. Swap
1787 1787 * space for holes was already reserved when the file was grown.
1788 1788 */
1789 1789 tmpoff = toff;
1790 1790 if (non_anon(tp->tn_anon, btop(off), &tmpoff, &tlen)) {
1791 1791 if (!rw_tryupgrade(&tp->tn_contents)) {
1792 1792 rw_exit(&tp->tn_contents);
1793 1793 rw_enter(&tp->tn_contents, RW_WRITER);
1794 1794 /* Size may have changed when lock was dropped */
1795 1795 if (off + len > tp->tn_size + PAGEOFFSET) {
1796 1796 err = EFAULT;
1797 1797 goto out;
1798 1798 }
1799 1799 }
1800 1800 for (toff = (anoff_t)off; toff < (anoff_t)off + len;
1801 1801 toff += PAGESIZE) {
1802 1802 if (anon_get_ptr(tp->tn_anon, btop(toff)) == NULL) {
1803 1803 /* XXX - may allocate mem w. write lock held */
1804 1804 (void) anon_set_ptr(tp->tn_anon, btop(toff),
1805 1805 anon_alloc(vp, toff), ANON_SLEEP);
1806 1806 tp->tn_nblocks++;
1807 1807 }
1808 1808 }
1809 1809 rw_downgrade(&tp->tn_contents);
1810 1810 }
1811 1811
1812 1812
1813 1813 err = pvn_getpages(tmp_getapage, vp, (u_offset_t)off, len, protp,
1814 1814 pl, plsz, seg, addr, rw, cr);
1815 1815
1816 1816 gethrestime(&now);
1817 1817 tp->tn_atime = now;
1818 1818 if (rw == S_WRITE)
1819 1819 tp->tn_mtime = now;
1820 1820
1821 1821 out:
1822 1822 rw_exit(&tp->tn_contents);
1823 1823 return (err);
1824 1824 }
1825 1825
1826 1826 /*
1827 1827 * Called from pvn_getpages to get a particular page.
1828 1828 */
1829 1829 /*ARGSUSED*/
1830 1830 static int
1831 1831 tmp_getapage(
1832 1832 struct vnode *vp,
1833 1833 u_offset_t off,
1834 1834 size_t len,
1835 1835 uint_t *protp,
1836 1836 page_t *pl[],
1837 1837 size_t plsz,
1838 1838 struct seg *seg,
1839 1839 caddr_t addr,
1840 1840 enum seg_rw rw,
1841 1841 struct cred *cr)
1842 1842 {
1843 1843 struct page *pp;
1844 1844 int flags;
1845 1845 int err = 0;
1846 1846 struct vnode *pvp;
1847 1847 u_offset_t poff;
1848 1848
1849 1849 if (protp != NULL)
1850 1850 *protp = PROT_ALL;
1851 1851 again:
1852 1852 if (pp = page_lookup(vp, off, rw == S_CREATE ? SE_EXCL : SE_SHARED)) {
1853 1853 if (pl) {
1854 1854 pl[0] = pp;
1855 1855 pl[1] = NULL;
1856 1856 } else {
1857 1857 page_unlock(pp);
1858 1858 }
1859 1859 } else {
1860 1860 pp = page_create_va(vp, off, PAGESIZE,
1861 1861 PG_WAIT | PG_EXCL, seg, addr);
1862 1862 /*
1863 1863 * Someone raced in and created the page after we did the
1864 1864 * lookup but before we did the create, so go back and
1865 1865 * try to look it up again.
1866 1866 */
1867 1867 if (pp == NULL)
1868 1868 goto again;
1869 1869 /*
1870 1870 * Fill page from backing store, if any. If none, then
1871 1871 * either this is a newly filled hole or page must have
1872 1872 * been unmodified and freed so just zero it out.
1873 1873 */
1874 1874 err = swap_getphysname(vp, off, &pvp, &poff);
1875 1875 if (err) {
1876 1876 panic("tmp_getapage: no anon slot vp %p "
1877 1877 "off %llx pp %p\n", (void *)vp, off, (void *)pp);
1878 1878 }
1879 1879 if (pvp) {
1880 1880 flags = (pl == NULL ? B_ASYNC|B_READ : B_READ);
1881 1881 err = VOP_PAGEIO(pvp, pp, (u_offset_t)poff, PAGESIZE,
1882 1882 flags, cr, NULL);
1883 1883 if (flags & B_ASYNC)
1884 1884 pp = NULL;
1885 1885 } else if (rw != S_CREATE) {
1886 1886 pagezero(pp, 0, PAGESIZE);
1887 1887 }
1888 1888 if (err && pp)
1889 1889 pvn_read_done(pp, B_ERROR);
1890 1890 if (err == 0) {
1891 1891 if (pl)
1892 1892 pvn_plist_init(pp, pl, plsz, off, PAGESIZE, rw);
1893 1893 else
1894 1894 pvn_io_done(pp);
1895 1895 }
1896 1896 }
1897 1897 return (err);
1898 1898 }
1899 1899
1900 1900
1901 1901 /*
1902 1902 * Flags are composed of {B_INVAL, B_DIRTY B_FREE, B_DONTNEED}.
1903 1903 * If len == 0, do from off to EOF.
1904 1904 */
1905 1905 static int tmp_nopage = 0; /* Don't do tmp_putpage's if set */
1906 1906
1907 1907 /* ARGSUSED */
1908 1908 int
1909 1909 tmp_putpage(
1910 1910 register struct vnode *vp,
1911 1911 offset_t off,
1912 1912 size_t len,
1913 1913 int flags,
1914 1914 struct cred *cr,
1915 1915 caller_context_t *ct)
1916 1916 {
1917 1917 register page_t *pp;
1918 1918 u_offset_t io_off;
1919 1919 size_t io_len = 0;
1920 1920 int err = 0;
1921 1921 struct tmpnode *tp = VTOTN(vp);
1922 1922 int dolock;
1923 1923
1924 1924 if (tmp_nopage)
1925 1925 return (0);
1926 1926
1927 1927 ASSERT(vp->v_count != 0);
1928 1928
1929 1929 if (vp->v_flag & VNOMAP)
1930 1930 return (ENOSYS);
1931 1931
1932 1932 /*
1933 1933 * This being tmpfs, we don't ever do i/o unless we really
1934 1934 * have to (when we're low on memory and pageout calls us
1935 1935 * with B_ASYNC | B_FREE or the user explicitly asks for it with
1936 1936 * B_DONTNEED).
1937 1937 * XXX to approximately track the mod time like ufs we should
1938 1938 * update the times here. The problem is, once someone does a
1939 1939 * store we never clear the mod bit and do i/o, thus fsflush
1940 1940 * will keep calling us every 30 seconds to do the i/o and we'll
1941 1941 * continually update the mod time. At least we update the mod
1942 1942 * time on the first store because this results in a call to getpage.
1943 1943 */
1944 1944 if (flags != (B_ASYNC | B_FREE) && (flags & B_INVAL) == 0 &&
1945 1945 (flags & B_DONTNEED) == 0)
1946 1946 return (0);
1947 1947 /*
1948 1948 * If this thread owns the lock, i.e., this thread grabbed it
1949 1949 * as writer somewhere above, then we don't need to grab the
1950 1950 * lock as reader in this routine.
1951 1951 */
1952 1952 dolock = (rw_owner(&tp->tn_contents) != curthread);
1953 1953
1954 1954 /*
1955 1955 * If this is pageout don't block on the lock as you could deadlock
1956 1956 * when freemem == 0 (another thread has the read lock and is blocked
1957 1957 * creating a page, and a third thread is waiting to get the writers
1958 1958 * lock - waiting writers priority blocks us from getting the read
1959 1959 * lock). Of course, if the only freeable pages are on this tmpnode
1960 1960 * we're hosed anyways. A better solution might be a new lock type.
1961 1961 * Note: ufs has the same problem.
1962 1962 */
1963 1963 if (curproc == proc_pageout) {
1964 1964 if (!rw_tryenter(&tp->tn_contents, RW_READER))
1965 1965 return (ENOMEM);
1966 1966 } else if (dolock)
1967 1967 rw_enter(&tp->tn_contents, RW_READER);
1968 1968
1969 1969 if (!vn_has_cached_data(vp))
1970 1970 goto out;
1971 1971
1972 1972 if (len == 0) {
1973 1973 if (curproc == proc_pageout) {
1974 1974 panic("tmp: pageout can't block");
1975 1975 /*NOTREACHED*/
1976 1976 }
1977 1977
1978 1978 /* Search the entire vp list for pages >= off. */
1979 1979 err = pvn_vplist_dirty(vp, (u_offset_t)off, tmp_putapage,
1980 1980 flags, cr);
1981 1981 } else {
1982 1982 u_offset_t eoff;
1983 1983
1984 1984 /*
1985 1985 * Loop over all offsets in the range [off...off + len]
1986 1986 * looking for pages to deal with.
1987 1987 */
1988 1988 eoff = MIN(off + len, tp->tn_size);
1989 1989 for (io_off = off; io_off < eoff; io_off += io_len) {
1990 1990 /*
1991 1991 * If we are not invalidating, synchronously
1992 1992 * freeing or writing pages use the routine
1993 1993 * page_lookup_nowait() to prevent reclaiming
1994 1994 * them from the free list.
1995 1995 */
1996 1996 if ((flags & B_INVAL) || ((flags & B_ASYNC) == 0)) {
1997 1997 pp = page_lookup(vp, io_off,
1998 1998 (flags & (B_INVAL | B_FREE)) ?
1999 1999 SE_EXCL : SE_SHARED);
2000 2000 } else {
2001 2001 pp = page_lookup_nowait(vp, io_off,
2002 2002 (flags & B_FREE) ? SE_EXCL : SE_SHARED);
2003 2003 }
2004 2004
2005 2005 if (pp == NULL || pvn_getdirty(pp, flags) == 0)
2006 2006 io_len = PAGESIZE;
2007 2007 else {
2008 2008 err = tmp_putapage(vp, pp, &io_off, &io_len,
2009 2009 flags, cr);
2010 2010 if (err != 0)
2011 2011 break;
2012 2012 }
2013 2013 }
2014 2014 }
2015 2015 /* If invalidating, verify all pages on vnode list are gone. */
2016 2016 if (err == 0 && off == 0 && len == 0 &&
2017 2017 (flags & B_INVAL) && vn_has_cached_data(vp)) {
2018 2018 panic("tmp_putpage: B_INVAL, pages not gone");
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2018 lines elided |
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2019 2019 /*NOTREACHED*/
2020 2020 }
2021 2021 out:
2022 2022 if ((curproc == proc_pageout) || dolock)
2023 2023 rw_exit(&tp->tn_contents);
2024 2024 /*
2025 2025 * Only reason putapage is going to give us SE_NOSWAP as error
2026 2026 * is when we ask a page to be written to physical backing store
2027 2027 * and there is none. Ignore this because we might be dealing
2028 2028 * with a swap page which does not have any backing store
2029 - * on disk. In any other case we won't get this error over here.
2029 + * on disk, though the newer SE_NODEV error should cover that.
2030 + * In any other case we won't get this error over here.
2030 2031 */
2031 - if (err == SE_NOSWAP)
2032 + if (err == SE_NOSWAP || err == SE_NODEV)
2032 2033 err = 0;
2033 2034 return (err);
2034 2035 }
2035 2036
2036 2037 long tmp_putpagecnt, tmp_pagespushed;
2037 2038
2038 2039 /*
2039 2040 * Write out a single page.
2040 2041 * For tmpfs this means choose a physical swap slot and write the page
2041 2042 * out using VOP_PAGEIO. For performance, we attempt to kluster; i.e.,
2042 2043 * we try to find a bunch of other dirty pages adjacent in the file
2043 2044 * and a bunch of contiguous swap slots, and then write all the pages
2044 2045 * out in a single i/o.
2045 2046 */
2046 2047 /*ARGSUSED*/
2047 2048 static int
2048 2049 tmp_putapage(
2049 2050 struct vnode *vp,
2050 2051 page_t *pp,
2051 2052 u_offset_t *offp,
2052 2053 size_t *lenp,
2053 2054 int flags,
2054 2055 struct cred *cr)
2055 2056 {
2056 2057 int err;
2057 2058 ulong_t klstart, kllen;
2058 2059 page_t *pplist, *npplist;
2059 2060 extern int klustsize;
2060 2061 long tmp_klustsize;
2061 2062 struct tmpnode *tp;
2062 2063 size_t pp_off, pp_len;
2063 2064 u_offset_t io_off;
2064 2065 size_t io_len;
2065 2066 struct vnode *pvp;
2066 2067 u_offset_t pstart;
2067 2068 u_offset_t offset;
2068 2069 u_offset_t tmpoff;
2069 2070
2070 2071 ASSERT(PAGE_LOCKED(pp));
2071 2072
2072 2073 /* Kluster in tmp_klustsize chunks */
2073 2074 tp = VTOTN(vp);
2074 2075 tmp_klustsize = klustsize;
2075 2076 offset = pp->p_offset;
2076 2077 klstart = (offset / tmp_klustsize) * tmp_klustsize;
2077 2078 kllen = MIN(tmp_klustsize, tp->tn_size - klstart);
2078 2079
2079 2080 /* Get a kluster of pages */
2080 2081 pplist =
2081 2082 pvn_write_kluster(vp, pp, &tmpoff, &pp_len, klstart, kllen, flags);
2082 2083
2083 2084 pp_off = (size_t)tmpoff;
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2084 2085
2085 2086 /*
2086 2087 * Get a cluster of physical offsets for the pages; the amount we
2087 2088 * get may be some subrange of what we ask for (io_off, io_len).
2088 2089 */
2089 2090 io_off = pp_off;
2090 2091 io_len = pp_len;
2091 2092 err = swap_newphysname(vp, offset, &io_off, &io_len, &pvp, &pstart);
2092 2093 ASSERT(err != SE_NOANON); /* anon slot must have been filled */
2093 2094 if (err) {
2094 - pvn_write_done(pplist, B_ERROR | B_WRITE | flags);
2095 + ASSERT(err == SE_NOSWAP || err == SE_NODEV);
2096 + pvn_write_done(pplist, (err == SE_NODEV ? 0 : B_ERROR) |
2097 + B_WRITE | flags);
2095 2098 /*
2096 2099 * If this routine is called as a result of segvn_sync
2097 2100 * operation and we have no physical swap then we can get an
2098 2101 * error here. In such case we would return SE_NOSWAP as error.
2099 - * At this point, we expect only SE_NOSWAP.
2100 2102 */
2101 - ASSERT(err == SE_NOSWAP);
2102 - if (flags & B_INVAL)
2103 + if ((flags & B_INVAL) && err == SE_NOSWAP)
2103 2104 err = ENOMEM;
2104 2105 goto out;
2105 2106 }
2106 2107 ASSERT(pp_off <= io_off && io_off + io_len <= pp_off + pp_len);
2107 2108 ASSERT(io_off <= offset && offset < io_off + io_len);
2108 2109
2109 2110 /* Toss pages at front/rear that we couldn't get physical backing for */
2110 2111 if (io_off != pp_off) {
2111 2112 npplist = NULL;
2112 2113 page_list_break(&pplist, &npplist, btop(io_off - pp_off));
2113 2114 ASSERT(pplist->p_offset == pp_off);
2114 2115 ASSERT(pplist->p_prev->p_offset == io_off - PAGESIZE);
2115 2116 pvn_write_done(pplist, B_ERROR | B_WRITE | flags);
2116 2117 pplist = npplist;
2117 2118 }
2118 2119 if (io_off + io_len < pp_off + pp_len) {
2119 2120 npplist = NULL;
2120 2121 page_list_break(&pplist, &npplist, btop(io_len));
2121 2122 ASSERT(npplist->p_offset == io_off + io_len);
2122 2123 ASSERT(npplist->p_prev->p_offset == pp_off + pp_len - PAGESIZE);
2123 2124 pvn_write_done(npplist, B_ERROR | B_WRITE | flags);
2124 2125 }
2125 2126
2126 2127 ASSERT(pplist->p_offset == io_off);
2127 2128 ASSERT(pplist->p_prev->p_offset == io_off + io_len - PAGESIZE);
2128 2129 ASSERT(btopr(io_len) <= btopr(kllen));
2129 2130
2130 2131 /* Do i/o on the remaining kluster */
2131 2132 err = VOP_PAGEIO(pvp, pplist, (u_offset_t)pstart, io_len,
2132 2133 B_WRITE | flags, cr, NULL);
2133 2134
2134 2135 if ((flags & B_ASYNC) == 0) {
2135 2136 pvn_write_done(pplist, ((err) ? B_ERROR : 0) | B_WRITE | flags);
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2136 2137 }
2137 2138 out:
2138 2139 if (!err) {
2139 2140 if (offp)
2140 2141 *offp = io_off;
2141 2142 if (lenp)
2142 2143 *lenp = io_len;
2143 2144 tmp_putpagecnt++;
2144 2145 tmp_pagespushed += btop(io_len);
2145 2146 }
2146 - if (err && err != ENOMEM && err != SE_NOSWAP)
2147 + if (err && err != ENOMEM && err != SE_NOSWAP && err != SE_NODEV)
2147 2148 cmn_err(CE_WARN, "tmp_putapage: err %d\n", err);
2148 2149 return (err);
2149 2150 }
2150 2151
2151 2152 /* ARGSUSED */
2152 2153 static int
2153 2154 tmp_map(
2154 2155 struct vnode *vp,
2155 2156 offset_t off,
2156 2157 struct as *as,
2157 2158 caddr_t *addrp,
2158 2159 size_t len,
2159 2160 uchar_t prot,
2160 2161 uchar_t maxprot,
2161 2162 uint_t flags,
2162 2163 struct cred *cred,
2163 2164 caller_context_t *ct)
2164 2165 {
2165 2166 struct segvn_crargs vn_a;
2166 2167 struct tmpnode *tp = (struct tmpnode *)VTOTN(vp);
2167 2168 int error;
2168 2169
2169 2170 #ifdef _ILP32
2170 2171 if (len > MAXOFF_T)
2171 2172 return (ENOMEM);
2172 2173 #endif
2173 2174
2174 2175 if (vp->v_flag & VNOMAP)
2175 2176 return (ENOSYS);
2176 2177
2177 2178 if (off < 0 || (offset_t)(off + len) < 0 ||
2178 2179 off > MAXOFF_T || (off + len) > MAXOFF_T)
2179 2180 return (ENXIO);
2180 2181
2181 2182 if (vp->v_type != VREG)
2182 2183 return (ENODEV);
2183 2184
2184 2185 /*
2185 2186 * Don't allow mapping to locked file
2186 2187 */
2187 2188 if (vn_has_mandatory_locks(vp, tp->tn_mode)) {
2188 2189 return (EAGAIN);
2189 2190 }
2190 2191
2191 2192 as_rangelock(as);
2192 2193 error = choose_addr(as, addrp, len, off, ADDR_VACALIGN, flags);
2193 2194 if (error != 0) {
2194 2195 as_rangeunlock(as);
2195 2196 return (error);
2196 2197 }
2197 2198
2198 2199 vn_a.vp = vp;
2199 2200 vn_a.offset = (u_offset_t)off;
2200 2201 vn_a.type = flags & MAP_TYPE;
2201 2202 vn_a.prot = prot;
2202 2203 vn_a.maxprot = maxprot;
2203 2204 vn_a.flags = flags & ~MAP_TYPE;
2204 2205 vn_a.cred = cred;
2205 2206 vn_a.amp = NULL;
2206 2207 vn_a.szc = 0;
2207 2208 vn_a.lgrp_mem_policy_flags = 0;
2208 2209
2209 2210 error = as_map(as, *addrp, len, segvn_create, &vn_a);
2210 2211 as_rangeunlock(as);
2211 2212 return (error);
2212 2213 }
2213 2214
2214 2215 /*
2215 2216 * tmp_addmap and tmp_delmap can't be called since the vp
2216 2217 * maintained in the segvn mapping is NULL.
2217 2218 */
2218 2219 /* ARGSUSED */
2219 2220 static int
2220 2221 tmp_addmap(
2221 2222 struct vnode *vp,
2222 2223 offset_t off,
2223 2224 struct as *as,
2224 2225 caddr_t addr,
2225 2226 size_t len,
2226 2227 uchar_t prot,
2227 2228 uchar_t maxprot,
2228 2229 uint_t flags,
2229 2230 struct cred *cred,
2230 2231 caller_context_t *ct)
2231 2232 {
2232 2233 return (0);
2233 2234 }
2234 2235
2235 2236 /* ARGSUSED */
2236 2237 static int
2237 2238 tmp_delmap(
2238 2239 struct vnode *vp,
2239 2240 offset_t off,
2240 2241 struct as *as,
2241 2242 caddr_t addr,
2242 2243 size_t len,
2243 2244 uint_t prot,
2244 2245 uint_t maxprot,
2245 2246 uint_t flags,
2246 2247 struct cred *cred,
2247 2248 caller_context_t *ct)
2248 2249 {
2249 2250 return (0);
2250 2251 }
2251 2252
2252 2253 static int
2253 2254 tmp_freesp(struct vnode *vp, struct flock64 *lp, int flag)
2254 2255 {
2255 2256 register int i;
2256 2257 register struct tmpnode *tp = VTOTN(vp);
2257 2258 int error;
2258 2259
2259 2260 ASSERT(vp->v_type == VREG);
2260 2261 ASSERT(lp->l_start >= 0);
2261 2262
2262 2263 if (lp->l_len != 0)
2263 2264 return (EINVAL);
2264 2265
2265 2266 rw_enter(&tp->tn_rwlock, RW_WRITER);
2266 2267 if (tp->tn_size == lp->l_start) {
2267 2268 rw_exit(&tp->tn_rwlock);
2268 2269 return (0);
2269 2270 }
2270 2271
2271 2272 /*
2272 2273 * Check for any mandatory locks on the range
2273 2274 */
2274 2275 if (MANDLOCK(vp, tp->tn_mode)) {
2275 2276 long save_start;
2276 2277
2277 2278 save_start = lp->l_start;
2278 2279
2279 2280 if (tp->tn_size < lp->l_start) {
2280 2281 /*
2281 2282 * "Truncate up" case: need to make sure there
2282 2283 * is no lock beyond current end-of-file. To
2283 2284 * do so, we need to set l_start to the size
2284 2285 * of the file temporarily.
2285 2286 */
2286 2287 lp->l_start = tp->tn_size;
2287 2288 }
2288 2289 lp->l_type = F_WRLCK;
2289 2290 lp->l_sysid = 0;
2290 2291 lp->l_pid = ttoproc(curthread)->p_pid;
2291 2292 i = (flag & (FNDELAY|FNONBLOCK)) ? 0 : SLPFLCK;
2292 2293 if ((i = reclock(vp, lp, i, 0, lp->l_start, NULL)) != 0 ||
2293 2294 lp->l_type != F_UNLCK) {
2294 2295 rw_exit(&tp->tn_rwlock);
2295 2296 return (i ? i : EAGAIN);
2296 2297 }
2297 2298
2298 2299 lp->l_start = save_start;
2299 2300 }
2300 2301 VFSTOTM(vp->v_vfsp);
2301 2302
2302 2303 rw_enter(&tp->tn_contents, RW_WRITER);
2303 2304 error = tmpnode_trunc((struct tmount *)VFSTOTM(vp->v_vfsp),
2304 2305 tp, (ulong_t)lp->l_start);
2305 2306 rw_exit(&tp->tn_contents);
2306 2307 rw_exit(&tp->tn_rwlock);
2307 2308 return (error);
2308 2309 }
2309 2310
2310 2311 /* ARGSUSED */
2311 2312 static int
2312 2313 tmp_space(
2313 2314 struct vnode *vp,
2314 2315 int cmd,
2315 2316 struct flock64 *bfp,
2316 2317 int flag,
2317 2318 offset_t offset,
2318 2319 cred_t *cred,
2319 2320 caller_context_t *ct)
2320 2321 {
2321 2322 int error;
2322 2323
2323 2324 if (cmd != F_FREESP)
2324 2325 return (EINVAL);
2325 2326 if ((error = convoff(vp, bfp, 0, (offset_t)offset)) == 0) {
2326 2327 if ((bfp->l_start > MAXOFF_T) || (bfp->l_len > MAXOFF_T))
2327 2328 return (EFBIG);
2328 2329 error = tmp_freesp(vp, bfp, flag);
2329 2330
2330 2331 if (error == 0 && bfp->l_start == 0)
2331 2332 vnevent_truncate(vp, ct);
2332 2333 }
2333 2334 return (error);
2334 2335 }
2335 2336
2336 2337 /* ARGSUSED */
2337 2338 static int
2338 2339 tmp_seek(
2339 2340 struct vnode *vp,
2340 2341 offset_t ooff,
2341 2342 offset_t *noffp,
2342 2343 caller_context_t *ct)
2343 2344 {
2344 2345 return ((*noffp < 0 || *noffp > MAXOFFSET_T) ? EINVAL : 0);
2345 2346 }
2346 2347
2347 2348 /* ARGSUSED2 */
2348 2349 static int
2349 2350 tmp_rwlock(struct vnode *vp, int write_lock, caller_context_t *ctp)
2350 2351 {
2351 2352 struct tmpnode *tp = VTOTN(vp);
2352 2353
2353 2354 if (write_lock) {
2354 2355 rw_enter(&tp->tn_rwlock, RW_WRITER);
2355 2356 } else {
2356 2357 rw_enter(&tp->tn_rwlock, RW_READER);
2357 2358 }
2358 2359 return (write_lock);
2359 2360 }
2360 2361
2361 2362 /* ARGSUSED1 */
2362 2363 static void
2363 2364 tmp_rwunlock(struct vnode *vp, int write_lock, caller_context_t *ctp)
2364 2365 {
2365 2366 struct tmpnode *tp = VTOTN(vp);
2366 2367
2367 2368 rw_exit(&tp->tn_rwlock);
2368 2369 }
2369 2370
2370 2371 static int
2371 2372 tmp_pathconf(
2372 2373 struct vnode *vp,
2373 2374 int cmd,
2374 2375 ulong_t *valp,
2375 2376 cred_t *cr,
2376 2377 caller_context_t *ct)
2377 2378 {
2378 2379 struct tmpnode *tp = NULL;
2379 2380 int error;
2380 2381
2381 2382 switch (cmd) {
2382 2383 case _PC_XATTR_EXISTS:
2383 2384 if (vp->v_vfsp->vfs_flag & VFS_XATTR) {
2384 2385 *valp = 0; /* assume no attributes */
2385 2386 error = 0; /* okay to ask */
2386 2387 tp = VTOTN(vp);
2387 2388 rw_enter(&tp->tn_rwlock, RW_READER);
2388 2389 if (tp->tn_xattrdp) {
2389 2390 rw_enter(&tp->tn_xattrdp->tn_rwlock, RW_READER);
2390 2391 /* do not count "." and ".." */
2391 2392 if (tp->tn_xattrdp->tn_dirents > 2)
2392 2393 *valp = 1;
2393 2394 rw_exit(&tp->tn_xattrdp->tn_rwlock);
2394 2395 }
2395 2396 rw_exit(&tp->tn_rwlock);
2396 2397 } else {
2397 2398 error = EINVAL;
2398 2399 }
2399 2400 break;
2400 2401 case _PC_SATTR_ENABLED:
2401 2402 case _PC_SATTR_EXISTS:
2402 2403 *valp = vfs_has_feature(vp->v_vfsp, VFSFT_SYSATTR_VIEWS) &&
2403 2404 (vp->v_type == VREG || vp->v_type == VDIR);
2404 2405 error = 0;
2405 2406 break;
2406 2407 case _PC_TIMESTAMP_RESOLUTION:
2407 2408 /* nanosecond timestamp resolution */
2408 2409 *valp = 1L;
2409 2410 error = 0;
2410 2411 break;
2411 2412 default:
2412 2413 error = fs_pathconf(vp, cmd, valp, cr, ct);
2413 2414 }
2414 2415 return (error);
2415 2416 }
2416 2417
2417 2418
2418 2419 struct vnodeops *tmp_vnodeops;
2419 2420
2420 2421 const fs_operation_def_t tmp_vnodeops_template[] = {
2421 2422 VOPNAME_OPEN, { .vop_open = tmp_open },
2422 2423 VOPNAME_CLOSE, { .vop_close = tmp_close },
2423 2424 VOPNAME_READ, { .vop_read = tmp_read },
2424 2425 VOPNAME_WRITE, { .vop_write = tmp_write },
2425 2426 VOPNAME_IOCTL, { .vop_ioctl = tmp_ioctl },
2426 2427 VOPNAME_GETATTR, { .vop_getattr = tmp_getattr },
2427 2428 VOPNAME_SETATTR, { .vop_setattr = tmp_setattr },
2428 2429 VOPNAME_ACCESS, { .vop_access = tmp_access },
2429 2430 VOPNAME_LOOKUP, { .vop_lookup = tmp_lookup },
2430 2431 VOPNAME_CREATE, { .vop_create = tmp_create },
2431 2432 VOPNAME_REMOVE, { .vop_remove = tmp_remove },
2432 2433 VOPNAME_LINK, { .vop_link = tmp_link },
2433 2434 VOPNAME_RENAME, { .vop_rename = tmp_rename },
2434 2435 VOPNAME_MKDIR, { .vop_mkdir = tmp_mkdir },
2435 2436 VOPNAME_RMDIR, { .vop_rmdir = tmp_rmdir },
2436 2437 VOPNAME_READDIR, { .vop_readdir = tmp_readdir },
2437 2438 VOPNAME_SYMLINK, { .vop_symlink = tmp_symlink },
2438 2439 VOPNAME_READLINK, { .vop_readlink = tmp_readlink },
2439 2440 VOPNAME_FSYNC, { .vop_fsync = tmp_fsync },
2440 2441 VOPNAME_INACTIVE, { .vop_inactive = tmp_inactive },
2441 2442 VOPNAME_FID, { .vop_fid = tmp_fid },
2442 2443 VOPNAME_RWLOCK, { .vop_rwlock = tmp_rwlock },
2443 2444 VOPNAME_RWUNLOCK, { .vop_rwunlock = tmp_rwunlock },
2444 2445 VOPNAME_SEEK, { .vop_seek = tmp_seek },
2445 2446 VOPNAME_SPACE, { .vop_space = tmp_space },
2446 2447 VOPNAME_GETPAGE, { .vop_getpage = tmp_getpage },
2447 2448 VOPNAME_PUTPAGE, { .vop_putpage = tmp_putpage },
2448 2449 VOPNAME_MAP, { .vop_map = tmp_map },
2449 2450 VOPNAME_ADDMAP, { .vop_addmap = tmp_addmap },
2450 2451 VOPNAME_DELMAP, { .vop_delmap = tmp_delmap },
2451 2452 VOPNAME_PATHCONF, { .vop_pathconf = tmp_pathconf },
2452 2453 VOPNAME_VNEVENT, { .vop_vnevent = fs_vnevent_support },
2453 2454 NULL, NULL
2454 2455 };
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