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9f0a21e6 MM |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
1d3ba0bf | 9 | * or https://opensource.org/licenses/CDDL-1.0. |
9f0a21e6 MM |
10 | * See the License for the specific language governing permissions |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | ||
22 | /* | |
23 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. | |
24 | * Copyright (c) 2012, 2015 by Delphix. All rights reserved. | |
25 | * Copyright (c) 2014 Integros [integros.com] | |
26 | * Copyright 2017 Nexenta Systems, Inc. | |
27 | */ | |
28 | ||
29 | /* Portions Copyright 2007 Jeremy Teo */ | |
30 | /* Portions Copyright 2010 Robert Milkowski */ | |
31 | ||
9f0a21e6 MM |
32 | #include <sys/param.h> |
33 | #include <sys/time.h> | |
34 | #include <sys/systm.h> | |
35 | #include <sys/sysmacros.h> | |
36 | #include <sys/resource.h> | |
a3f82aec | 37 | #include <security/mac/mac_framework.h> |
9f0a21e6 | 38 | #include <sys/vfs.h> |
27d96d22 | 39 | #include <sys/endian.h> |
9f0a21e6 MM |
40 | #include <sys/vm.h> |
41 | #include <sys/vnode.h> | |
1b376d17 MM |
42 | #if __FreeBSD_version >= 1300102 |
43 | #include <sys/smr.h> | |
44 | #endif | |
9f0a21e6 MM |
45 | #include <sys/dirent.h> |
46 | #include <sys/file.h> | |
47 | #include <sys/stat.h> | |
48 | #include <sys/kmem.h> | |
49 | #include <sys/taskq.h> | |
50 | #include <sys/uio.h> | |
51 | #include <sys/atomic.h> | |
52 | #include <sys/namei.h> | |
53 | #include <sys/mman.h> | |
54 | #include <sys/cmn_err.h> | |
55 | #include <sys/kdb.h> | |
56 | #include <sys/sysproto.h> | |
57 | #include <sys/errno.h> | |
58 | #include <sys/unistd.h> | |
59 | #include <sys/zfs_dir.h> | |
60 | #include <sys/zfs_ioctl.h> | |
61 | #include <sys/fs/zfs.h> | |
62 | #include <sys/dmu.h> | |
63 | #include <sys/dmu_objset.h> | |
64 | #include <sys/spa.h> | |
65 | #include <sys/txg.h> | |
66 | #include <sys/dbuf.h> | |
67 | #include <sys/zap.h> | |
68 | #include <sys/sa.h> | |
69 | #include <sys/policy.h> | |
70 | #include <sys/sunddi.h> | |
71 | #include <sys/filio.h> | |
72 | #include <sys/sid.h> | |
73 | #include <sys/zfs_ctldir.h> | |
74 | #include <sys/zfs_fuid.h> | |
75 | #include <sys/zfs_quota.h> | |
76 | #include <sys/zfs_sa.h> | |
77 | #include <sys/zfs_rlock.h> | |
9f0a21e6 MM |
78 | #include <sys/bio.h> |
79 | #include <sys/buf.h> | |
80 | #include <sys/sched.h> | |
81 | #include <sys/acl.h> | |
82 | #include <sys/vmmeter.h> | |
83 | #include <vm/vm_param.h> | |
84 | #include <sys/zil.h> | |
85 | #include <sys/zfs_vnops.h> | |
67a1b037 PJD |
86 | #include <sys/module.h> |
87 | #include <sys/sysent.h> | |
67a1b037 PJD |
88 | #include <sys/dmu_impl.h> |
89 | #include <sys/brt.h> | |
90 | #include <sys/zfeature.h> | |
9f0a21e6 MM |
91 | |
92 | #include <vm/vm_object.h> | |
93 | ||
94 | #include <sys/extattr.h> | |
95 | #include <sys/priv.h> | |
96 | ||
97 | #ifndef VN_OPEN_INVFS | |
98 | #define VN_OPEN_INVFS 0x0 | |
99 | #endif | |
100 | ||
1b376d17 MM |
101 | VFS_SMR_DECLARE; |
102 | ||
b61507ec RM |
103 | #if __FreeBSD_version < 1300103 |
104 | #define NDFREE_PNBUF(ndp) NDFREE((ndp), NDF_ONLY_PNBUF) | |
105 | #endif | |
106 | ||
9f0a21e6 MM |
107 | #if __FreeBSD_version >= 1300047 |
108 | #define vm_page_wire_lock(pp) | |
109 | #define vm_page_wire_unlock(pp) | |
110 | #else | |
111 | #define vm_page_wire_lock(pp) vm_page_lock(pp) | |
112 | #define vm_page_wire_unlock(pp) vm_page_unlock(pp) | |
113 | #endif | |
114 | ||
9f0a21e6 MM |
115 | #ifdef DEBUG_VFS_LOCKS |
116 | #define VNCHECKREF(vp) \ | |
117 | VNASSERT((vp)->v_holdcnt > 0 && (vp)->v_usecount > 0, vp, \ | |
118 | ("%s: wrong ref counts", __func__)); | |
119 | #else | |
120 | #define VNCHECKREF(vp) | |
121 | #endif | |
122 | ||
ca1b2bb4 AS |
123 | #if __FreeBSD_version >= 1400045 |
124 | typedef uint64_t cookie_t; | |
125 | #else | |
126 | typedef ulong_t cookie_t; | |
127 | #endif | |
128 | ||
9f0a21e6 MM |
129 | /* |
130 | * Programming rules. | |
131 | * | |
132 | * Each vnode op performs some logical unit of work. To do this, the ZPL must | |
133 | * properly lock its in-core state, create a DMU transaction, do the work, | |
134 | * record this work in the intent log (ZIL), commit the DMU transaction, | |
135 | * and wait for the intent log to commit if it is a synchronous operation. | |
136 | * Moreover, the vnode ops must work in both normal and log replay context. | |
137 | * The ordering of events is important to avoid deadlocks and references | |
138 | * to freed memory. The example below illustrates the following Big Rules: | |
139 | * | |
140 | * (1) A check must be made in each zfs thread for a mounted file system. | |
768eaced CC |
141 | * This is done avoiding races using zfs_enter(zfsvfs). |
142 | * A zfs_exit(zfsvfs) is needed before all returns. Any znodes | |
143 | * must be checked with zfs_verify_zp(zp). Both of these macros | |
9f0a21e6 MM |
144 | * can return EIO from the calling function. |
145 | * | |
146 | * (2) VN_RELE() should always be the last thing except for zil_commit() | |
768eaced | 147 | * (if necessary) and zfs_exit(). This is for 3 reasons: |
9f0a21e6 MM |
148 | * First, if it's the last reference, the vnode/znode |
149 | * can be freed, so the zp may point to freed memory. Second, the last | |
150 | * reference will call zfs_zinactive(), which may induce a lot of work -- | |
151 | * pushing cached pages (which acquires range locks) and syncing out | |
152 | * cached atime changes. Third, zfs_zinactive() may require a new tx, | |
153 | * which could deadlock the system if you were already holding one. | |
154 | * If you must call VN_RELE() within a tx then use VN_RELE_ASYNC(). | |
155 | * | |
156 | * (3) All range locks must be grabbed before calling dmu_tx_assign(), | |
157 | * as they can span dmu_tx_assign() calls. | |
158 | * | |
159 | * (4) If ZPL locks are held, pass TXG_NOWAIT as the second argument to | |
160 | * dmu_tx_assign(). This is critical because we don't want to block | |
161 | * while holding locks. | |
162 | * | |
768eaced | 163 | * If no ZPL locks are held (aside from zfs_enter()), use TXG_WAIT. This |
9f0a21e6 MM |
164 | * reduces lock contention and CPU usage when we must wait (note that if |
165 | * throughput is constrained by the storage, nearly every transaction | |
166 | * must wait). | |
167 | * | |
168 | * Note, in particular, that if a lock is sometimes acquired before | |
169 | * the tx assigns, and sometimes after (e.g. z_lock), then failing | |
170 | * to use a non-blocking assign can deadlock the system. The scenario: | |
171 | * | |
172 | * Thread A has grabbed a lock before calling dmu_tx_assign(). | |
173 | * Thread B is in an already-assigned tx, and blocks for this lock. | |
174 | * Thread A calls dmu_tx_assign(TXG_WAIT) and blocks in txg_wait_open() | |
175 | * forever, because the previous txg can't quiesce until B's tx commits. | |
176 | * | |
177 | * If dmu_tx_assign() returns ERESTART and zfsvfs->z_assign is TXG_NOWAIT, | |
178 | * then drop all locks, call dmu_tx_wait(), and try again. On subsequent | |
179 | * calls to dmu_tx_assign(), pass TXG_NOTHROTTLE in addition to TXG_NOWAIT, | |
180 | * to indicate that this operation has already called dmu_tx_wait(). | |
181 | * This will ensure that we don't retry forever, waiting a short bit | |
182 | * each time. | |
183 | * | |
184 | * (5) If the operation succeeded, generate the intent log entry for it | |
185 | * before dropping locks. This ensures that the ordering of events | |
186 | * in the intent log matches the order in which they actually occurred. | |
187 | * During ZIL replay the zfs_log_* functions will update the sequence | |
188 | * number to indicate the zil transaction has replayed. | |
189 | * | |
190 | * (6) At the end of each vnode op, the DMU tx must always commit, | |
191 | * regardless of whether there were any errors. | |
192 | * | |
193 | * (7) After dropping all locks, invoke zil_commit(zilog, foid) | |
194 | * to ensure that synchronous semantics are provided when necessary. | |
195 | * | |
196 | * In general, this is how things should be ordered in each vnode op: | |
197 | * | |
768eaced | 198 | * zfs_enter(zfsvfs); // exit if unmounted |
9f0a21e6 MM |
199 | * top: |
200 | * zfs_dirent_lookup(&dl, ...) // lock directory entry (may VN_HOLD()) | |
201 | * rw_enter(...); // grab any other locks you need | |
202 | * tx = dmu_tx_create(...); // get DMU tx | |
203 | * dmu_tx_hold_*(); // hold each object you might modify | |
204 | * error = dmu_tx_assign(tx, (waited ? TXG_NOTHROTTLE : 0) | TXG_NOWAIT); | |
205 | * if (error) { | |
206 | * rw_exit(...); // drop locks | |
207 | * zfs_dirent_unlock(dl); // unlock directory entry | |
208 | * VN_RELE(...); // release held vnodes | |
209 | * if (error == ERESTART) { | |
210 | * waited = B_TRUE; | |
211 | * dmu_tx_wait(tx); | |
212 | * dmu_tx_abort(tx); | |
213 | * goto top; | |
214 | * } | |
215 | * dmu_tx_abort(tx); // abort DMU tx | |
768eaced | 216 | * zfs_exit(zfsvfs); // finished in zfs |
9f0a21e6 MM |
217 | * return (error); // really out of space |
218 | * } | |
219 | * error = do_real_work(); // do whatever this VOP does | |
220 | * if (error == 0) | |
221 | * zfs_log_*(...); // on success, make ZIL entry | |
222 | * dmu_tx_commit(tx); // commit DMU tx -- error or not | |
223 | * rw_exit(...); // drop locks | |
224 | * zfs_dirent_unlock(dl); // unlock directory entry | |
225 | * VN_RELE(...); // release held vnodes | |
226 | * zil_commit(zilog, foid); // synchronous when necessary | |
768eaced | 227 | * zfs_exit(zfsvfs); // finished in zfs |
9f0a21e6 MM |
228 | * return (error); // done, report error |
229 | */ | |
9f0a21e6 MM |
230 | static int |
231 | zfs_open(vnode_t **vpp, int flag, cred_t *cr) | |
232 | { | |
ef70eff1 | 233 | (void) cr; |
9f0a21e6 MM |
234 | znode_t *zp = VTOZ(*vpp); |
235 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
768eaced | 236 | int error; |
9f0a21e6 | 237 | |
768eaced CC |
238 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
239 | return (error); | |
9f0a21e6 MM |
240 | |
241 | if ((flag & FWRITE) && (zp->z_pflags & ZFS_APPENDONLY) && | |
242 | ((flag & FAPPEND) == 0)) { | |
768eaced | 243 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
244 | return (SET_ERROR(EPERM)); |
245 | } | |
246 | ||
c3773de1 AM |
247 | /* |
248 | * Keep a count of the synchronous opens in the znode. On first | |
249 | * synchronous open we must convert all previous async transactions | |
250 | * into sync to keep correct ordering. | |
251 | */ | |
252 | if (flag & O_SYNC) { | |
253 | if (atomic_inc_32_nv(&zp->z_sync_cnt) == 1) | |
254 | zil_async_to_sync(zfsvfs->z_log, zp->z_id); | |
255 | } | |
9f0a21e6 | 256 | |
768eaced | 257 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
258 | return (0); |
259 | } | |
260 | ||
9f0a21e6 MM |
261 | static int |
262 | zfs_close(vnode_t *vp, int flag, int count, offset_t offset, cred_t *cr) | |
263 | { | |
ef70eff1 | 264 | (void) offset, (void) cr; |
9f0a21e6 MM |
265 | znode_t *zp = VTOZ(vp); |
266 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
768eaced | 267 | int error; |
9f0a21e6 | 268 | |
768eaced CC |
269 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
270 | return (error); | |
9f0a21e6 MM |
271 | |
272 | /* Decrement the synchronous opens in the znode */ | |
a64d757a | 273 | if ((flag & O_SYNC) && (count == 1)) |
9f0a21e6 MM |
274 | atomic_dec_32(&zp->z_sync_cnt); |
275 | ||
768eaced | 276 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
277 | return (0); |
278 | } | |
279 | ||
9f0a21e6 MM |
280 | static int |
281 | zfs_ioctl(vnode_t *vp, ulong_t com, intptr_t data, int flag, cred_t *cred, | |
282 | int *rvalp) | |
283 | { | |
ef70eff1 | 284 | (void) flag, (void) cred, (void) rvalp; |
8583540c | 285 | loff_t off; |
9f0a21e6 | 286 | int error; |
9f0a21e6 MM |
287 | |
288 | switch (com) { | |
289 | case _FIOFFS: | |
290 | { | |
291 | return (0); | |
292 | ||
293 | /* | |
294 | * The following two ioctls are used by bfu. Faking out, | |
295 | * necessary to avoid bfu errors. | |
296 | */ | |
297 | } | |
298 | case _FIOGDIO: | |
299 | case _FIOSDIO: | |
300 | { | |
301 | return (0); | |
302 | } | |
303 | ||
8583540c MM |
304 | case F_SEEK_DATA: |
305 | case F_SEEK_HOLE: | |
9f0a21e6 MM |
306 | { |
307 | off = *(offset_t *)data; | |
9f0a21e6 | 308 | /* offset parameter is in/out */ |
8583540c | 309 | error = zfs_holey(VTOZ(vp), com, &off); |
9f0a21e6 MM |
310 | if (error) |
311 | return (error); | |
312 | *(offset_t *)data = off; | |
313 | return (0); | |
314 | } | |
315 | } | |
316 | return (SET_ERROR(ENOTTY)); | |
317 | } | |
318 | ||
319 | static vm_page_t | |
320 | page_busy(vnode_t *vp, int64_t start, int64_t off, int64_t nbytes) | |
321 | { | |
322 | vm_object_t obj; | |
323 | vm_page_t pp; | |
324 | int64_t end; | |
325 | ||
326 | /* | |
327 | * At present vm_page_clear_dirty extends the cleared range to DEV_BSIZE | |
328 | * aligned boundaries, if the range is not aligned. As a result a | |
329 | * DEV_BSIZE subrange with partially dirty data may get marked as clean. | |
330 | * It may happen that all DEV_BSIZE subranges are marked clean and thus | |
dd4bc569 AG |
331 | * the whole page would be considered clean despite have some |
332 | * dirty data. | |
9f0a21e6 MM |
333 | * For this reason we should shrink the range to DEV_BSIZE aligned |
334 | * boundaries before calling vm_page_clear_dirty. | |
335 | */ | |
336 | end = rounddown2(off + nbytes, DEV_BSIZE); | |
337 | off = roundup2(off, DEV_BSIZE); | |
338 | nbytes = end - off; | |
339 | ||
340 | obj = vp->v_object; | |
c614fd6e | 341 | zfs_vmobject_assert_wlocked_12(obj); |
9f0a21e6 MM |
342 | #if __FreeBSD_version < 1300050 |
343 | for (;;) { | |
344 | if ((pp = vm_page_lookup(obj, OFF_TO_IDX(start))) != NULL && | |
345 | pp->valid) { | |
346 | if (vm_page_xbusied(pp)) { | |
347 | /* | |
348 | * Reference the page before unlocking and | |
349 | * sleeping so that the page daemon is less | |
350 | * likely to reclaim it. | |
351 | */ | |
352 | vm_page_reference(pp); | |
353 | vm_page_lock(pp); | |
354 | zfs_vmobject_wunlock(obj); | |
355 | vm_page_busy_sleep(pp, "zfsmwb", true); | |
356 | zfs_vmobject_wlock(obj); | |
357 | continue; | |
358 | } | |
359 | vm_page_sbusy(pp); | |
360 | } else if (pp != NULL) { | |
361 | ASSERT(!pp->valid); | |
362 | pp = NULL; | |
363 | } | |
364 | if (pp != NULL) { | |
365 | ASSERT3U(pp->valid, ==, VM_PAGE_BITS_ALL); | |
366 | vm_object_pip_add(obj, 1); | |
367 | pmap_remove_write(pp); | |
368 | if (nbytes != 0) | |
369 | vm_page_clear_dirty(pp, off, nbytes); | |
370 | } | |
371 | break; | |
372 | } | |
373 | #else | |
c614fd6e MM |
374 | vm_page_grab_valid_unlocked(&pp, obj, OFF_TO_IDX(start), |
375 | VM_ALLOC_NOCREAT | VM_ALLOC_SBUSY | VM_ALLOC_NORMAL | | |
376 | VM_ALLOC_IGN_SBUSY); | |
9f0a21e6 MM |
377 | if (pp != NULL) { |
378 | ASSERT3U(pp->valid, ==, VM_PAGE_BITS_ALL); | |
379 | vm_object_pip_add(obj, 1); | |
380 | pmap_remove_write(pp); | |
381 | if (nbytes != 0) | |
382 | vm_page_clear_dirty(pp, off, nbytes); | |
383 | } | |
384 | #endif | |
385 | return (pp); | |
386 | } | |
387 | ||
388 | static void | |
389 | page_unbusy(vm_page_t pp) | |
390 | { | |
391 | ||
392 | vm_page_sunbusy(pp); | |
393 | #if __FreeBSD_version >= 1300041 | |
394 | vm_object_pip_wakeup(pp->object); | |
395 | #else | |
396 | vm_object_pip_subtract(pp->object, 1); | |
397 | #endif | |
398 | } | |
399 | ||
400 | #if __FreeBSD_version > 1300051 | |
401 | static vm_page_t | |
402 | page_hold(vnode_t *vp, int64_t start) | |
403 | { | |
404 | vm_object_t obj; | |
405 | vm_page_t m; | |
406 | ||
407 | obj = vp->v_object; | |
c614fd6e MM |
408 | vm_page_grab_valid_unlocked(&m, obj, OFF_TO_IDX(start), |
409 | VM_ALLOC_NOCREAT | VM_ALLOC_WIRED | VM_ALLOC_IGN_SBUSY | | |
410 | VM_ALLOC_NOBUSY); | |
9f0a21e6 MM |
411 | return (m); |
412 | } | |
413 | #else | |
414 | static vm_page_t | |
415 | page_hold(vnode_t *vp, int64_t start) | |
416 | { | |
417 | vm_object_t obj; | |
418 | vm_page_t pp; | |
419 | ||
420 | obj = vp->v_object; | |
421 | zfs_vmobject_assert_wlocked(obj); | |
422 | ||
423 | for (;;) { | |
424 | if ((pp = vm_page_lookup(obj, OFF_TO_IDX(start))) != NULL && | |
425 | pp->valid) { | |
426 | if (vm_page_xbusied(pp)) { | |
427 | /* | |
428 | * Reference the page before unlocking and | |
429 | * sleeping so that the page daemon is less | |
430 | * likely to reclaim it. | |
431 | */ | |
432 | vm_page_reference(pp); | |
433 | vm_page_lock(pp); | |
434 | zfs_vmobject_wunlock(obj); | |
435 | vm_page_busy_sleep(pp, "zfsmwb", true); | |
436 | zfs_vmobject_wlock(obj); | |
437 | continue; | |
438 | } | |
439 | ||
440 | ASSERT3U(pp->valid, ==, VM_PAGE_BITS_ALL); | |
441 | vm_page_wire_lock(pp); | |
442 | vm_page_hold(pp); | |
443 | vm_page_wire_unlock(pp); | |
444 | ||
445 | } else | |
446 | pp = NULL; | |
447 | break; | |
448 | } | |
449 | return (pp); | |
450 | } | |
451 | #endif | |
452 | ||
453 | static void | |
454 | page_unhold(vm_page_t pp) | |
455 | { | |
456 | ||
457 | vm_page_wire_lock(pp); | |
458 | #if __FreeBSD_version >= 1300035 | |
459 | vm_page_unwire(pp, PQ_ACTIVE); | |
460 | #else | |
461 | vm_page_unhold(pp); | |
462 | #endif | |
463 | vm_page_wire_unlock(pp); | |
464 | } | |
465 | ||
466 | /* | |
467 | * When a file is memory mapped, we must keep the IO data synchronized | |
468 | * between the DMU cache and the memory mapped pages. What this means: | |
469 | * | |
470 | * On Write: If we find a memory mapped page, we write to *both* | |
471 | * the page and the dmu buffer. | |
472 | */ | |
e53d678d | 473 | void |
8a9634e2 | 474 | update_pages(znode_t *zp, int64_t start, int len, objset_t *os) |
9f0a21e6 MM |
475 | { |
476 | vm_object_t obj; | |
477 | struct sf_buf *sf; | |
e53d678d | 478 | vnode_t *vp = ZTOV(zp); |
9f0a21e6 MM |
479 | caddr_t va; |
480 | int off; | |
481 | ||
e4efb709 | 482 | ASSERT3P(vp->v_mount, !=, NULL); |
9f0a21e6 | 483 | obj = vp->v_object; |
e4efb709 | 484 | ASSERT3P(obj, !=, NULL); |
9f0a21e6 MM |
485 | |
486 | off = start & PAGEOFFSET; | |
c614fd6e | 487 | zfs_vmobject_wlock_12(obj); |
9f0a21e6 MM |
488 | #if __FreeBSD_version >= 1300041 |
489 | vm_object_pip_add(obj, 1); | |
490 | #endif | |
491 | for (start &= PAGEMASK; len > 0; start += PAGESIZE) { | |
492 | vm_page_t pp; | |
493 | int nbytes = imin(PAGESIZE - off, len); | |
494 | ||
495 | if ((pp = page_busy(vp, start, off, nbytes)) != NULL) { | |
c614fd6e | 496 | zfs_vmobject_wunlock_12(obj); |
9f0a21e6 MM |
497 | |
498 | va = zfs_map_page(pp, &sf); | |
8a9634e2 RM |
499 | (void) dmu_read(os, zp->z_id, start + off, nbytes, |
500 | va + off, DMU_READ_PREFETCH); | |
9f0a21e6 MM |
501 | zfs_unmap_page(sf); |
502 | ||
c614fd6e | 503 | zfs_vmobject_wlock_12(obj); |
9f0a21e6 MM |
504 | page_unbusy(pp); |
505 | } | |
506 | len -= nbytes; | |
507 | off = 0; | |
508 | } | |
509 | #if __FreeBSD_version >= 1300041 | |
510 | vm_object_pip_wakeup(obj); | |
511 | #else | |
512 | vm_object_pip_wakeupn(obj, 0); | |
513 | #endif | |
c614fd6e | 514 | zfs_vmobject_wunlock_12(obj); |
9f0a21e6 MM |
515 | } |
516 | ||
517 | /* | |
518 | * Read with UIO_NOCOPY flag means that sendfile(2) requests | |
519 | * ZFS to populate a range of page cache pages with data. | |
520 | * | |
521 | * NOTE: this function could be optimized to pre-allocate | |
522 | * all pages in advance, drain exclusive busy on all of them, | |
523 | * map them into contiguous KVA region and populate them | |
524 | * in one single dmu_read() call. | |
525 | */ | |
e53d678d | 526 | int |
d0cd9a5c | 527 | mappedread_sf(znode_t *zp, int nbytes, zfs_uio_t *uio) |
9f0a21e6 | 528 | { |
e53d678d | 529 | vnode_t *vp = ZTOV(zp); |
9f0a21e6 MM |
530 | objset_t *os = zp->z_zfsvfs->z_os; |
531 | struct sf_buf *sf; | |
532 | vm_object_t obj; | |
533 | vm_page_t pp; | |
534 | int64_t start; | |
535 | caddr_t va; | |
536 | int len = nbytes; | |
537 | int error = 0; | |
538 | ||
e4efb709 RM |
539 | ASSERT3U(zfs_uio_segflg(uio), ==, UIO_NOCOPY); |
540 | ASSERT3P(vp->v_mount, !=, NULL); | |
9f0a21e6 | 541 | obj = vp->v_object; |
e4efb709 RM |
542 | ASSERT3P(obj, !=, NULL); |
543 | ASSERT0(zfs_uio_offset(uio) & PAGEOFFSET); | |
9f0a21e6 | 544 | |
c614fd6e | 545 | zfs_vmobject_wlock_12(obj); |
d0cd9a5c | 546 | for (start = zfs_uio_offset(uio); len > 0; start += PAGESIZE) { |
9f0a21e6 MM |
547 | int bytes = MIN(PAGESIZE, len); |
548 | ||
c614fd6e MM |
549 | pp = vm_page_grab_unlocked(obj, OFF_TO_IDX(start), |
550 | VM_ALLOC_SBUSY | VM_ALLOC_NORMAL | VM_ALLOC_IGN_SBUSY); | |
9f0a21e6 | 551 | if (vm_page_none_valid(pp)) { |
c614fd6e | 552 | zfs_vmobject_wunlock_12(obj); |
9f0a21e6 MM |
553 | va = zfs_map_page(pp, &sf); |
554 | error = dmu_read(os, zp->z_id, start, bytes, va, | |
555 | DMU_READ_PREFETCH); | |
556 | if (bytes != PAGESIZE && error == 0) | |
861166b0 | 557 | memset(va + bytes, 0, PAGESIZE - bytes); |
9f0a21e6 | 558 | zfs_unmap_page(sf); |
c614fd6e MM |
559 | zfs_vmobject_wlock_12(obj); |
560 | #if __FreeBSD_version >= 1300081 | |
9f0a21e6 MM |
561 | if (error == 0) { |
562 | vm_page_valid(pp); | |
9f0a21e6 | 563 | vm_page_activate(pp); |
c614fd6e MM |
564 | vm_page_do_sunbusy(pp); |
565 | } else { | |
566 | zfs_vmobject_wlock(obj); | |
567 | if (!vm_page_wired(pp) && pp->valid == 0 && | |
568 | vm_page_busy_tryupgrade(pp)) | |
569 | vm_page_free(pp); | |
570 | else | |
571 | vm_page_sunbusy(pp); | |
572 | zfs_vmobject_wunlock(obj); | |
9f0a21e6 | 573 | } |
9f0a21e6 | 574 | #else |
c614fd6e | 575 | vm_page_do_sunbusy(pp); |
9f0a21e6 MM |
576 | vm_page_lock(pp); |
577 | if (error) { | |
578 | if (pp->wire_count == 0 && pp->valid == 0 && | |
579 | !vm_page_busied(pp)) | |
580 | vm_page_free(pp); | |
581 | } else { | |
582 | pp->valid = VM_PAGE_BITS_ALL; | |
583 | vm_page_activate(pp); | |
584 | } | |
585 | vm_page_unlock(pp); | |
586 | #endif | |
587 | } else { | |
588 | ASSERT3U(pp->valid, ==, VM_PAGE_BITS_ALL); | |
589 | vm_page_do_sunbusy(pp); | |
590 | } | |
591 | if (error) | |
592 | break; | |
d0cd9a5c | 593 | zfs_uio_advance(uio, bytes); |
9f0a21e6 MM |
594 | len -= bytes; |
595 | } | |
c614fd6e | 596 | zfs_vmobject_wunlock_12(obj); |
9f0a21e6 MM |
597 | return (error); |
598 | } | |
599 | ||
600 | /* | |
601 | * When a file is memory mapped, we must keep the IO data synchronized | |
602 | * between the DMU cache and the memory mapped pages. What this means: | |
603 | * | |
604 | * On Read: We "read" preferentially from memory mapped pages, | |
605 | * else we default from the dmu buffer. | |
606 | * | |
607 | * NOTE: We will always "break up" the IO into PAGESIZE uiomoves when | |
608 | * the file is memory mapped. | |
609 | */ | |
e53d678d | 610 | int |
d0cd9a5c | 611 | mappedread(znode_t *zp, int nbytes, zfs_uio_t *uio) |
9f0a21e6 | 612 | { |
e53d678d | 613 | vnode_t *vp = ZTOV(zp); |
9f0a21e6 MM |
614 | vm_object_t obj; |
615 | int64_t start; | |
616 | int len = nbytes; | |
617 | int off; | |
618 | int error = 0; | |
619 | ||
e4efb709 | 620 | ASSERT3P(vp->v_mount, !=, NULL); |
9f0a21e6 | 621 | obj = vp->v_object; |
e4efb709 | 622 | ASSERT3P(obj, !=, NULL); |
9f0a21e6 | 623 | |
d0cd9a5c | 624 | start = zfs_uio_offset(uio); |
9f0a21e6 | 625 | off = start & PAGEOFFSET; |
c614fd6e | 626 | zfs_vmobject_wlock_12(obj); |
9f0a21e6 MM |
627 | for (start &= PAGEMASK; len > 0; start += PAGESIZE) { |
628 | vm_page_t pp; | |
629 | uint64_t bytes = MIN(PAGESIZE - off, len); | |
630 | ||
631 | if ((pp = page_hold(vp, start))) { | |
632 | struct sf_buf *sf; | |
633 | caddr_t va; | |
634 | ||
c614fd6e | 635 | zfs_vmobject_wunlock_12(obj); |
9f0a21e6 | 636 | va = zfs_map_page(pp, &sf); |
d0cd9a5c BA |
637 | error = vn_io_fault_uiomove(va + off, bytes, |
638 | GET_UIO_STRUCT(uio)); | |
9f0a21e6 | 639 | zfs_unmap_page(sf); |
c614fd6e | 640 | zfs_vmobject_wlock_12(obj); |
9f0a21e6 MM |
641 | page_unhold(pp); |
642 | } else { | |
c614fd6e | 643 | zfs_vmobject_wunlock_12(obj); |
9f0a21e6 MM |
644 | error = dmu_read_uio_dbuf(sa_get_db(zp->z_sa_hdl), |
645 | uio, bytes); | |
c614fd6e | 646 | zfs_vmobject_wlock_12(obj); |
9f0a21e6 MM |
647 | } |
648 | len -= bytes; | |
649 | off = 0; | |
650 | if (error) | |
651 | break; | |
652 | } | |
c614fd6e | 653 | zfs_vmobject_wunlock_12(obj); |
9f0a21e6 MM |
654 | return (error); |
655 | } | |
656 | ||
9f0a21e6 MM |
657 | int |
658 | zfs_write_simple(znode_t *zp, const void *data, size_t len, | |
659 | loff_t pos, size_t *presid) | |
660 | { | |
661 | int error = 0; | |
662 | ssize_t resid; | |
663 | ||
664 | error = vn_rdwr(UIO_WRITE, ZTOV(zp), __DECONST(void *, data), len, pos, | |
665 | UIO_SYSSPACE, IO_SYNC, kcred, NOCRED, &resid, curthread); | |
666 | ||
667 | if (error) { | |
668 | return (SET_ERROR(error)); | |
669 | } else if (presid == NULL) { | |
670 | if (resid != 0) { | |
671 | error = SET_ERROR(EIO); | |
672 | } | |
673 | } else { | |
674 | *presid = resid; | |
675 | } | |
676 | return (error); | |
677 | } | |
678 | ||
ab8c935e CS |
679 | void |
680 | zfs_zrele_async(znode_t *zp) | |
9f0a21e6 | 681 | { |
ab8c935e CS |
682 | vnode_t *vp = ZTOV(zp); |
683 | objset_t *os = ITOZSB(vp)->z_os; | |
9f0a21e6 | 684 | |
ab8c935e | 685 | VN_RELE_ASYNC(vp, dsl_pool_zrele_taskq(dmu_objset_pool(os))); |
9f0a21e6 MM |
686 | } |
687 | ||
9f0a21e6 MM |
688 | static int |
689 | zfs_dd_callback(struct mount *mp, void *arg, int lkflags, struct vnode **vpp) | |
690 | { | |
691 | int error; | |
692 | ||
693 | *vpp = arg; | |
694 | error = vn_lock(*vpp, lkflags); | |
695 | if (error != 0) | |
696 | vrele(*vpp); | |
697 | return (error); | |
698 | } | |
699 | ||
700 | static int | |
701 | zfs_lookup_lock(vnode_t *dvp, vnode_t *vp, const char *name, int lkflags) | |
702 | { | |
703 | znode_t *zdp = VTOZ(dvp); | |
704 | zfsvfs_t *zfsvfs __unused = zdp->z_zfsvfs; | |
705 | int error; | |
706 | int ltype; | |
707 | ||
708 | if (zfsvfs->z_replay == B_FALSE) | |
709 | ASSERT_VOP_LOCKED(dvp, __func__); | |
9f0a21e6 MM |
710 | |
711 | if (name[0] == 0 || (name[0] == '.' && name[1] == 0)) { | |
712 | ASSERT3P(dvp, ==, vp); | |
713 | vref(dvp); | |
714 | ltype = lkflags & LK_TYPE_MASK; | |
715 | if (ltype != VOP_ISLOCKED(dvp)) { | |
716 | if (ltype == LK_EXCLUSIVE) | |
717 | vn_lock(dvp, LK_UPGRADE | LK_RETRY); | |
718 | else /* if (ltype == LK_SHARED) */ | |
719 | vn_lock(dvp, LK_DOWNGRADE | LK_RETRY); | |
720 | ||
721 | /* | |
722 | * Relock for the "." case could leave us with | |
723 | * reclaimed vnode. | |
724 | */ | |
725 | if (VN_IS_DOOMED(dvp)) { | |
726 | vrele(dvp); | |
727 | return (SET_ERROR(ENOENT)); | |
728 | } | |
729 | } | |
730 | return (0); | |
731 | } else if (name[0] == '.' && name[1] == '.' && name[2] == 0) { | |
732 | /* | |
733 | * Note that in this case, dvp is the child vnode, and we | |
734 | * are looking up the parent vnode - exactly reverse from | |
735 | * normal operation. Unlocking dvp requires some rather | |
736 | * tricky unlock/relock dance to prevent mp from being freed; | |
737 | * use vn_vget_ino_gen() which takes care of all that. | |
738 | * | |
739 | * XXX Note that there is a time window when both vnodes are | |
740 | * unlocked. It is possible, although highly unlikely, that | |
741 | * during that window the parent-child relationship between | |
742 | * the vnodes may change, for example, get reversed. | |
743 | * In that case we would have a wrong lock order for the vnodes. | |
744 | * All other filesystems seem to ignore this problem, so we | |
745 | * do the same here. | |
746 | * A potential solution could be implemented as follows: | |
747 | * - using LK_NOWAIT when locking the second vnode and retrying | |
748 | * if necessary | |
749 | * - checking that the parent-child relationship still holds | |
750 | * after locking both vnodes and retrying if it doesn't | |
751 | */ | |
752 | error = vn_vget_ino_gen(dvp, zfs_dd_callback, vp, lkflags, &vp); | |
753 | return (error); | |
754 | } else { | |
755 | error = vn_lock(vp, lkflags); | |
756 | if (error != 0) | |
757 | vrele(vp); | |
758 | return (error); | |
759 | } | |
760 | } | |
761 | ||
762 | /* | |
763 | * Lookup an entry in a directory, or an extended attribute directory. | |
764 | * If it exists, return a held vnode reference for it. | |
765 | * | |
766 | * IN: dvp - vnode of directory to search. | |
767 | * nm - name of entry to lookup. | |
768 | * pnp - full pathname to lookup [UNUSED]. | |
769 | * flags - LOOKUP_XATTR set if looking for an attribute. | |
770 | * rdir - root directory vnode [UNUSED]. | |
771 | * cr - credentials of caller. | |
772 | * ct - caller context | |
773 | * | |
774 | * OUT: vpp - vnode of located entry, NULL if not found. | |
775 | * | |
776 | * RETURN: 0 on success, error code on failure. | |
777 | * | |
778 | * Timestamps: | |
779 | * NA | |
780 | */ | |
9f0a21e6 | 781 | static int |
4d55ea81 | 782 | zfs_lookup(vnode_t *dvp, const char *nm, vnode_t **vpp, |
ac32854a PJD |
783 | struct componentname *cnp, int nameiop, cred_t *cr, int flags, |
784 | boolean_t cached) | |
9f0a21e6 MM |
785 | { |
786 | znode_t *zdp = VTOZ(dvp); | |
787 | znode_t *zp; | |
788 | zfsvfs_t *zfsvfs = zdp->z_zfsvfs; | |
f172f759 MG |
789 | #if __FreeBSD_version > 1300124 |
790 | seqc_t dvp_seqc; | |
791 | #endif | |
9f0a21e6 MM |
792 | int error = 0; |
793 | ||
794 | /* | |
795 | * Fast path lookup, however we must skip DNLC lookup | |
796 | * for case folding or normalizing lookups because the | |
797 | * DNLC code only stores the passed in name. This means | |
798 | * creating 'a' and removing 'A' on a case insensitive | |
799 | * file system would work, but DNLC still thinks 'a' | |
800 | * exists and won't let you create it again on the next | |
801 | * pass through fast path. | |
802 | */ | |
803 | if (!(flags & LOOKUP_XATTR)) { | |
804 | if (dvp->v_type != VDIR) { | |
805 | return (SET_ERROR(ENOTDIR)); | |
806 | } else if (zdp->z_sa_hdl == NULL) { | |
807 | return (SET_ERROR(EIO)); | |
808 | } | |
809 | } | |
810 | ||
4d55ea81 RM |
811 | DTRACE_PROBE2(zfs__fastpath__lookup__miss, vnode_t *, dvp, |
812 | const char *, nm); | |
9f0a21e6 | 813 | |
768eaced CC |
814 | if ((error = zfs_enter_verify_zp(zfsvfs, zdp, FTAG)) != 0) |
815 | return (error); | |
9f0a21e6 | 816 | |
f172f759 MG |
817 | #if __FreeBSD_version > 1300124 |
818 | dvp_seqc = vn_seqc_read_notmodify(dvp); | |
819 | #endif | |
820 | ||
9f0a21e6 MM |
821 | *vpp = NULL; |
822 | ||
823 | if (flags & LOOKUP_XATTR) { | |
824 | /* | |
825 | * If the xattr property is off, refuse the lookup request. | |
826 | */ | |
827 | if (!(zfsvfs->z_flags & ZSB_XATTR)) { | |
768eaced | 828 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
829 | return (SET_ERROR(EOPNOTSUPP)); |
830 | } | |
831 | ||
832 | /* | |
833 | * We don't allow recursive attributes.. | |
834 | * Maybe someday we will. | |
835 | */ | |
836 | if (zdp->z_pflags & ZFS_XATTR) { | |
768eaced | 837 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
838 | return (SET_ERROR(EINVAL)); |
839 | } | |
840 | ||
841 | if ((error = zfs_get_xattrdir(VTOZ(dvp), &zp, cr, flags))) { | |
768eaced | 842 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
843 | return (error); |
844 | } | |
845 | *vpp = ZTOV(zp); | |
846 | ||
847 | /* | |
848 | * Do we have permission to get into attribute directory? | |
849 | */ | |
2a068a13 | 850 | error = zfs_zaccess(zp, ACE_EXECUTE, 0, B_FALSE, cr, NULL); |
9f0a21e6 MM |
851 | if (error) { |
852 | vrele(ZTOV(zp)); | |
853 | } | |
854 | ||
768eaced | 855 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
856 | return (error); |
857 | } | |
858 | ||
859 | /* | |
860 | * Check accessibility of directory if we're not coming in via | |
861 | * VOP_CACHEDLOOKUP. | |
862 | */ | |
863 | if (!cached) { | |
864 | #ifdef NOEXECCHECK | |
865 | if ((cnp->cn_flags & NOEXECCHECK) != 0) { | |
866 | cnp->cn_flags &= ~NOEXECCHECK; | |
867 | } else | |
868 | #endif | |
2a068a13 YY |
869 | if ((error = zfs_zaccess(zdp, ACE_EXECUTE, 0, B_FALSE, cr, |
870 | NULL))) { | |
768eaced | 871 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
872 | return (error); |
873 | } | |
874 | } | |
875 | ||
876 | if (zfsvfs->z_utf8 && u8_validate(nm, strlen(nm), | |
877 | NULL, U8_VALIDATE_ENTIRE, &error) < 0) { | |
768eaced | 878 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
879 | return (SET_ERROR(EILSEQ)); |
880 | } | |
881 | ||
882 | ||
883 | /* | |
884 | * First handle the special cases. | |
885 | */ | |
886 | if ((cnp->cn_flags & ISDOTDOT) != 0) { | |
887 | /* | |
888 | * If we are a snapshot mounted under .zfs, return | |
889 | * the vp for the snapshot directory. | |
890 | */ | |
891 | if (zdp->z_id == zfsvfs->z_root && zfsvfs->z_parent != zfsvfs) { | |
892 | struct componentname cn; | |
893 | vnode_t *zfsctl_vp; | |
894 | int ltype; | |
895 | ||
768eaced | 896 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
897 | ltype = VOP_ISLOCKED(dvp); |
898 | VOP_UNLOCK1(dvp); | |
899 | error = zfsctl_root(zfsvfs->z_parent, LK_SHARED, | |
900 | &zfsctl_vp); | |
901 | if (error == 0) { | |
902 | cn.cn_nameptr = "snapshot"; | |
903 | cn.cn_namelen = strlen(cn.cn_nameptr); | |
904 | cn.cn_nameiop = cnp->cn_nameiop; | |
905 | cn.cn_flags = cnp->cn_flags & ~ISDOTDOT; | |
906 | cn.cn_lkflags = cnp->cn_lkflags; | |
907 | error = VOP_LOOKUP(zfsctl_vp, vpp, &cn); | |
908 | vput(zfsctl_vp); | |
909 | } | |
910 | vn_lock(dvp, ltype | LK_RETRY); | |
911 | return (error); | |
912 | } | |
913 | } | |
914 | if (zfs_has_ctldir(zdp) && strcmp(nm, ZFS_CTLDIR_NAME) == 0) { | |
768eaced | 915 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
916 | if ((cnp->cn_flags & ISLASTCN) != 0 && nameiop != LOOKUP) |
917 | return (SET_ERROR(ENOTSUP)); | |
918 | error = zfsctl_root(zfsvfs, cnp->cn_lkflags, vpp); | |
919 | return (error); | |
920 | } | |
921 | ||
922 | /* | |
923 | * The loop is retry the lookup if the parent-child relationship | |
924 | * changes during the dot-dot locking complexities. | |
925 | */ | |
926 | for (;;) { | |
927 | uint64_t parent; | |
928 | ||
929 | error = zfs_dirlook(zdp, nm, &zp); | |
930 | if (error == 0) | |
931 | *vpp = ZTOV(zp); | |
932 | ||
768eaced | 933 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
934 | if (error != 0) |
935 | break; | |
936 | ||
937 | error = zfs_lookup_lock(dvp, *vpp, nm, cnp->cn_lkflags); | |
938 | if (error != 0) { | |
939 | /* | |
940 | * If we've got a locking error, then the vnode | |
941 | * got reclaimed because of a force unmount. | |
942 | * We never enter doomed vnodes into the name cache. | |
943 | */ | |
944 | *vpp = NULL; | |
945 | return (error); | |
946 | } | |
947 | ||
948 | if ((cnp->cn_flags & ISDOTDOT) == 0) | |
949 | break; | |
950 | ||
768eaced CC |
951 | if ((error = zfs_enter(zfsvfs, FTAG)) != 0) { |
952 | vput(ZTOV(zp)); | |
953 | *vpp = NULL; | |
954 | return (error); | |
955 | } | |
9f0a21e6 MM |
956 | if (zdp->z_sa_hdl == NULL) { |
957 | error = SET_ERROR(EIO); | |
958 | } else { | |
959 | error = sa_lookup(zdp->z_sa_hdl, SA_ZPL_PARENT(zfsvfs), | |
960 | &parent, sizeof (parent)); | |
961 | } | |
962 | if (error != 0) { | |
768eaced | 963 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
964 | vput(ZTOV(zp)); |
965 | break; | |
966 | } | |
967 | if (zp->z_id == parent) { | |
768eaced | 968 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
969 | break; |
970 | } | |
971 | vput(ZTOV(zp)); | |
972 | } | |
973 | ||
974 | if (error != 0) | |
975 | *vpp = NULL; | |
976 | ||
977 | /* Translate errors and add SAVENAME when needed. */ | |
978 | if (cnp->cn_flags & ISLASTCN) { | |
979 | switch (nameiop) { | |
980 | case CREATE: | |
981 | case RENAME: | |
982 | if (error == ENOENT) { | |
983 | error = EJUSTRETURN; | |
3e5caef4 | 984 | #if __FreeBSD_version < 1400068 |
9f0a21e6 | 985 | cnp->cn_flags |= SAVENAME; |
3e5caef4 | 986 | #endif |
9f0a21e6 MM |
987 | break; |
988 | } | |
9a70e97f | 989 | zfs_fallthrough; |
9f0a21e6 | 990 | case DELETE: |
3e5caef4 | 991 | #if __FreeBSD_version < 1400068 |
9f0a21e6 MM |
992 | if (error == 0) |
993 | cnp->cn_flags |= SAVENAME; | |
3e5caef4 | 994 | #endif |
9f0a21e6 MM |
995 | break; |
996 | } | |
997 | } | |
998 | ||
f172f759 MG |
999 | #if __FreeBSD_version > 1300124 |
1000 | if ((cnp->cn_flags & ISDOTDOT) != 0) { | |
1001 | /* | |
1002 | * FIXME: zfs_lookup_lock relocks vnodes and does nothing to | |
1003 | * handle races. In particular different callers may end up | |
1004 | * with different vnodes and will try to add conflicting | |
1005 | * entries to the namecache. | |
1006 | * | |
1007 | * While finding different result may be acceptable in face | |
1008 | * of concurrent modification, adding conflicting entries | |
1009 | * trips over an assert in the namecache. | |
1010 | * | |
1011 | * Ultimately let an entry through once everything settles. | |
1012 | */ | |
1013 | if (!vn_seqc_consistent(dvp, dvp_seqc)) { | |
1014 | cnp->cn_flags &= ~MAKEENTRY; | |
1015 | } | |
1016 | } | |
1017 | #endif | |
1018 | ||
9f0a21e6 MM |
1019 | /* Insert name into cache (as non-existent) if appropriate. */ |
1020 | if (zfsvfs->z_use_namecache && !zfsvfs->z_replay && | |
1021 | error == ENOENT && (cnp->cn_flags & MAKEENTRY) != 0) | |
1022 | cache_enter(dvp, NULL, cnp); | |
1023 | ||
1024 | /* Insert name into cache if appropriate. */ | |
1025 | if (zfsvfs->z_use_namecache && !zfsvfs->z_replay && | |
1026 | error == 0 && (cnp->cn_flags & MAKEENTRY)) { | |
1027 | if (!(cnp->cn_flags & ISLASTCN) || | |
1028 | (nameiop != DELETE && nameiop != RENAME)) { | |
1029 | cache_enter(dvp, *vpp, cnp); | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | return (error); | |
1034 | } | |
1035 | ||
1036 | /* | |
1037 | * Attempt to create a new entry in a directory. If the entry | |
1038 | * already exists, truncate the file if permissible, else return | |
1039 | * an error. Return the vp of the created or trunc'd file. | |
1040 | * | |
1041 | * IN: dvp - vnode of directory to put new file entry in. | |
1042 | * name - name of new file entry. | |
1043 | * vap - attributes of new file. | |
1044 | * excl - flag indicating exclusive or non-exclusive mode. | |
1045 | * mode - mode to open file with. | |
1046 | * cr - credentials of caller. | |
1047 | * flag - large file flag [UNUSED]. | |
1048 | * ct - caller context | |
1049 | * vsecp - ACL to be set | |
2a068a13 | 1050 | * mnt_ns - Unused on FreeBSD |
9f0a21e6 MM |
1051 | * |
1052 | * OUT: vpp - vnode of created or trunc'd entry. | |
1053 | * | |
1054 | * RETURN: 0 on success, error code on failure. | |
1055 | * | |
1056 | * Timestamps: | |
1057 | * dvp - ctime|mtime updated if new entry created | |
1058 | * vp - ctime|mtime always, atime if new | |
1059 | */ | |
9f0a21e6 | 1060 | int |
4d55ea81 | 1061 | zfs_create(znode_t *dzp, const char *name, vattr_t *vap, int excl, int mode, |
d4dc53da | 1062 | znode_t **zpp, cred_t *cr, int flag, vsecattr_t *vsecp, zidmap_t *mnt_ns) |
9f0a21e6 | 1063 | { |
ef70eff1 | 1064 | (void) excl, (void) mode, (void) flag; |
9f0a21e6 MM |
1065 | znode_t *zp; |
1066 | zfsvfs_t *zfsvfs = dzp->z_zfsvfs; | |
1067 | zilog_t *zilog; | |
1068 | objset_t *os; | |
1069 | dmu_tx_t *tx; | |
1070 | int error; | |
d42979c6 | 1071 | uid_t uid = crgetuid(cr); |
9f0a21e6 MM |
1072 | gid_t gid = crgetgid(cr); |
1073 | uint64_t projid = ZFS_DEFAULT_PROJID; | |
1074 | zfs_acl_ids_t acl_ids; | |
1075 | boolean_t fuid_dirtied; | |
1076 | uint64_t txtype; | |
1077 | #ifdef DEBUG_VFS_LOCKS | |
1078 | vnode_t *dvp = ZTOV(dzp); | |
1079 | #endif | |
1080 | ||
1081 | /* | |
1082 | * If we have an ephemeral id, ACL, or XVATTR then | |
1083 | * make sure file system is at proper version | |
1084 | */ | |
9f0a21e6 MM |
1085 | if (zfsvfs->z_use_fuids == B_FALSE && |
1086 | (vsecp || (vap->va_mask & AT_XVATTR) || | |
1087 | IS_EPHEMERAL(uid) || IS_EPHEMERAL(gid))) | |
1088 | return (SET_ERROR(EINVAL)); | |
1089 | ||
768eaced CC |
1090 | if ((error = zfs_enter_verify_zp(zfsvfs, dzp, FTAG)) != 0) |
1091 | return (error); | |
9f0a21e6 MM |
1092 | os = zfsvfs->z_os; |
1093 | zilog = zfsvfs->z_log; | |
1094 | ||
1095 | if (zfsvfs->z_utf8 && u8_validate(name, strlen(name), | |
1096 | NULL, U8_VALIDATE_ENTIRE, &error) < 0) { | |
768eaced | 1097 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1098 | return (SET_ERROR(EILSEQ)); |
1099 | } | |
1100 | ||
1101 | if (vap->va_mask & AT_XVATTR) { | |
1102 | if ((error = secpolicy_xvattr(ZTOV(dzp), (xvattr_t *)vap, | |
1103 | crgetuid(cr), cr, vap->va_type)) != 0) { | |
768eaced | 1104 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1105 | return (error); |
1106 | } | |
1107 | } | |
1108 | ||
1109 | *zpp = NULL; | |
1110 | ||
1111 | if ((vap->va_mode & S_ISVTX) && secpolicy_vnode_stky_modify(cr)) | |
1112 | vap->va_mode &= ~S_ISVTX; | |
1113 | ||
1114 | error = zfs_dirent_lookup(dzp, name, &zp, ZNEW); | |
1115 | if (error) { | |
768eaced | 1116 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1117 | return (error); |
1118 | } | |
1119 | ASSERT3P(zp, ==, NULL); | |
1120 | ||
1121 | /* | |
1122 | * Create a new file object and update the directory | |
1123 | * to reference it. | |
1124 | */ | |
2a068a13 | 1125 | if ((error = zfs_zaccess(dzp, ACE_ADD_FILE, 0, B_FALSE, cr, mnt_ns))) { |
9f0a21e6 MM |
1126 | goto out; |
1127 | } | |
1128 | ||
1129 | /* | |
1130 | * We only support the creation of regular files in | |
1131 | * extended attribute directories. | |
1132 | */ | |
1133 | ||
1134 | if ((dzp->z_pflags & ZFS_XATTR) && | |
1135 | (vap->va_type != VREG)) { | |
1136 | error = SET_ERROR(EINVAL); | |
1137 | goto out; | |
1138 | } | |
1139 | ||
1140 | if ((error = zfs_acl_ids_create(dzp, 0, vap, | |
2a068a13 | 1141 | cr, vsecp, &acl_ids, NULL)) != 0) |
9f0a21e6 MM |
1142 | goto out; |
1143 | ||
1144 | if (S_ISREG(vap->va_mode) || S_ISDIR(vap->va_mode)) | |
1145 | projid = zfs_inherit_projid(dzp); | |
1146 | if (zfs_acl_ids_overquota(zfsvfs, &acl_ids, projid)) { | |
1147 | zfs_acl_ids_free(&acl_ids); | |
1148 | error = SET_ERROR(EDQUOT); | |
1149 | goto out; | |
1150 | } | |
1151 | ||
1152 | getnewvnode_reserve_(); | |
1153 | ||
1154 | tx = dmu_tx_create(os); | |
1155 | ||
1156 | dmu_tx_hold_sa_create(tx, acl_ids.z_aclp->z_acl_bytes + | |
1157 | ZFS_SA_BASE_ATTR_SIZE); | |
1158 | ||
1159 | fuid_dirtied = zfsvfs->z_fuid_dirty; | |
1160 | if (fuid_dirtied) | |
1161 | zfs_fuid_txhold(zfsvfs, tx); | |
1162 | dmu_tx_hold_zap(tx, dzp->z_id, TRUE, name); | |
1163 | dmu_tx_hold_sa(tx, dzp->z_sa_hdl, B_FALSE); | |
1164 | if (!zfsvfs->z_use_sa && | |
1165 | acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE) { | |
1166 | dmu_tx_hold_write(tx, DMU_NEW_OBJECT, | |
1167 | 0, acl_ids.z_aclp->z_acl_bytes); | |
1168 | } | |
1169 | error = dmu_tx_assign(tx, TXG_WAIT); | |
1170 | if (error) { | |
1171 | zfs_acl_ids_free(&acl_ids); | |
1172 | dmu_tx_abort(tx); | |
1173 | getnewvnode_drop_reserve(); | |
768eaced | 1174 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1175 | return (error); |
1176 | } | |
1177 | zfs_mknode(dzp, vap, tx, cr, 0, &zp, &acl_ids); | |
efbef9e6 AM |
1178 | |
1179 | error = zfs_link_create(dzp, name, zp, tx, ZNEW); | |
1180 | if (error != 0) { | |
1181 | /* | |
1182 | * Since, we failed to add the directory entry for it, | |
1183 | * delete the newly created dnode. | |
1184 | */ | |
1185 | zfs_znode_delete(zp, tx); | |
1186 | VOP_UNLOCK1(ZTOV(zp)); | |
1187 | zrele(zp); | |
1188 | zfs_acl_ids_free(&acl_ids); | |
1189 | dmu_tx_commit(tx); | |
1190 | getnewvnode_drop_reserve(); | |
1191 | goto out; | |
1192 | } | |
1193 | ||
9f0a21e6 MM |
1194 | if (fuid_dirtied) |
1195 | zfs_fuid_sync(zfsvfs, tx); | |
1196 | ||
9f0a21e6 MM |
1197 | txtype = zfs_log_create_txtype(Z_FILE, vsecp, vap); |
1198 | zfs_log_create(zilog, tx, txtype, dzp, zp, name, | |
1199 | vsecp, acl_ids.z_fuidp, vap); | |
1200 | zfs_acl_ids_free(&acl_ids); | |
1201 | dmu_tx_commit(tx); | |
1202 | ||
1203 | getnewvnode_drop_reserve(); | |
1204 | ||
1205 | out: | |
1206 | VNCHECKREF(dvp); | |
1207 | if (error == 0) { | |
1208 | *zpp = zp; | |
1209 | } | |
1210 | ||
1211 | if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS) | |
1212 | zil_commit(zilog, 0); | |
1213 | ||
768eaced | 1214 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1215 | return (error); |
1216 | } | |
1217 | ||
1218 | /* | |
1219 | * Remove an entry from a directory. | |
1220 | * | |
1221 | * IN: dvp - vnode of directory to remove entry from. | |
1222 | * name - name of entry to remove. | |
1223 | * cr - credentials of caller. | |
1224 | * ct - caller context | |
1225 | * flags - case flags | |
1226 | * | |
1227 | * RETURN: 0 on success, error code on failure. | |
1228 | * | |
1229 | * Timestamps: | |
1230 | * dvp - ctime|mtime | |
1231 | * vp - ctime (if nlink > 0) | |
1232 | */ | |
9f0a21e6 | 1233 | static int |
4d55ea81 | 1234 | zfs_remove_(vnode_t *dvp, vnode_t *vp, const char *name, cred_t *cr) |
9f0a21e6 MM |
1235 | { |
1236 | znode_t *dzp = VTOZ(dvp); | |
1237 | znode_t *zp; | |
1238 | znode_t *xzp; | |
1239 | zfsvfs_t *zfsvfs = dzp->z_zfsvfs; | |
1240 | zilog_t *zilog; | |
1241 | uint64_t xattr_obj; | |
1242 | uint64_t obj = 0; | |
1243 | dmu_tx_t *tx; | |
1244 | boolean_t unlinked; | |
1245 | uint64_t txtype; | |
1246 | int error; | |
1247 | ||
1248 | ||
768eaced CC |
1249 | if ((error = zfs_enter_verify_zp(zfsvfs, dzp, FTAG)) != 0) |
1250 | return (error); | |
9f0a21e6 | 1251 | zp = VTOZ(vp); |
768eaced CC |
1252 | if ((error = zfs_verify_zp(zp)) != 0) { |
1253 | zfs_exit(zfsvfs, FTAG); | |
1254 | return (error); | |
1255 | } | |
9f0a21e6 MM |
1256 | zilog = zfsvfs->z_log; |
1257 | ||
1258 | xattr_obj = 0; | |
1259 | xzp = NULL; | |
1260 | ||
2a068a13 | 1261 | if ((error = zfs_zaccess_delete(dzp, zp, cr, NULL))) { |
9f0a21e6 MM |
1262 | goto out; |
1263 | } | |
1264 | ||
1265 | /* | |
1266 | * Need to use rmdir for removing directories. | |
1267 | */ | |
1268 | if (vp->v_type == VDIR) { | |
1269 | error = SET_ERROR(EPERM); | |
1270 | goto out; | |
1271 | } | |
1272 | ||
1273 | vnevent_remove(vp, dvp, name, ct); | |
1274 | ||
1275 | obj = zp->z_id; | |
1276 | ||
1277 | /* are there any extended attributes? */ | |
1278 | error = sa_lookup(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs), | |
1279 | &xattr_obj, sizeof (xattr_obj)); | |
1280 | if (error == 0 && xattr_obj) { | |
1281 | error = zfs_zget(zfsvfs, xattr_obj, &xzp); | |
1282 | ASSERT0(error); | |
1283 | } | |
1284 | ||
1285 | /* | |
1286 | * We may delete the znode now, or we may put it in the unlinked set; | |
1287 | * it depends on whether we're the last link, and on whether there are | |
1288 | * other holds on the vnode. So we dmu_tx_hold() the right things to | |
1289 | * allow for either case. | |
1290 | */ | |
1291 | tx = dmu_tx_create(zfsvfs->z_os); | |
1292 | dmu_tx_hold_zap(tx, dzp->z_id, FALSE, name); | |
1293 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); | |
1294 | zfs_sa_upgrade_txholds(tx, zp); | |
1295 | zfs_sa_upgrade_txholds(tx, dzp); | |
1296 | ||
1297 | if (xzp) { | |
1298 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE); | |
1299 | dmu_tx_hold_sa(tx, xzp->z_sa_hdl, B_FALSE); | |
1300 | } | |
1301 | ||
1302 | /* charge as an update -- would be nice not to charge at all */ | |
1303 | dmu_tx_hold_zap(tx, zfsvfs->z_unlinkedobj, FALSE, NULL); | |
1304 | ||
1305 | /* | |
1306 | * Mark this transaction as typically resulting in a net free of space | |
1307 | */ | |
1308 | dmu_tx_mark_netfree(tx); | |
1309 | ||
1310 | error = dmu_tx_assign(tx, TXG_WAIT); | |
1311 | if (error) { | |
1312 | dmu_tx_abort(tx); | |
768eaced | 1313 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1314 | return (error); |
1315 | } | |
1316 | ||
1317 | /* | |
1318 | * Remove the directory entry. | |
1319 | */ | |
1320 | error = zfs_link_destroy(dzp, name, zp, tx, ZEXISTS, &unlinked); | |
1321 | ||
1322 | if (error) { | |
1323 | dmu_tx_commit(tx); | |
1324 | goto out; | |
1325 | } | |
1326 | ||
1327 | if (unlinked) { | |
1328 | zfs_unlinked_add(zp, tx); | |
1329 | vp->v_vflag |= VV_NOSYNC; | |
1330 | } | |
1331 | /* XXX check changes to linux vnops */ | |
1332 | txtype = TX_REMOVE; | |
1333 | zfs_log_remove(zilog, tx, txtype, dzp, name, obj, unlinked); | |
1334 | ||
1335 | dmu_tx_commit(tx); | |
1336 | out: | |
1337 | ||
1338 | if (xzp) | |
1339 | vrele(ZTOV(xzp)); | |
1340 | ||
1341 | if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS) | |
1342 | zil_commit(zilog, 0); | |
1343 | ||
1344 | ||
768eaced | 1345 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1346 | return (error); |
1347 | } | |
1348 | ||
1349 | ||
65c7cc49 | 1350 | static int |
4d55ea81 | 1351 | zfs_lookup_internal(znode_t *dzp, const char *name, vnode_t **vpp, |
9f0a21e6 MM |
1352 | struct componentname *cnp, int nameiop) |
1353 | { | |
1354 | zfsvfs_t *zfsvfs = dzp->z_zfsvfs; | |
1355 | int error; | |
1356 | ||
4d55ea81 | 1357 | cnp->cn_nameptr = __DECONST(char *, name); |
9f0a21e6 MM |
1358 | cnp->cn_namelen = strlen(name); |
1359 | cnp->cn_nameiop = nameiop; | |
3e5caef4 MG |
1360 | cnp->cn_flags = ISLASTCN; |
1361 | #if __FreeBSD_version < 1400068 | |
1362 | cnp->cn_flags |= SAVENAME; | |
1363 | #endif | |
9f0a21e6 MM |
1364 | cnp->cn_lkflags = LK_EXCLUSIVE | LK_RETRY; |
1365 | cnp->cn_cred = kcred; | |
14b69c09 | 1366 | #if __FreeBSD_version < 1400037 |
9f0a21e6 | 1367 | cnp->cn_thread = curthread; |
14b69c09 | 1368 | #endif |
9f0a21e6 MM |
1369 | |
1370 | if (zfsvfs->z_use_namecache && !zfsvfs->z_replay) { | |
1371 | struct vop_lookup_args a; | |
1372 | ||
1373 | a.a_gen.a_desc = &vop_lookup_desc; | |
1374 | a.a_dvp = ZTOV(dzp); | |
1375 | a.a_vpp = vpp; | |
1376 | a.a_cnp = cnp; | |
1377 | error = vfs_cache_lookup(&a); | |
1378 | } else { | |
ac32854a PJD |
1379 | error = zfs_lookup(ZTOV(dzp), name, vpp, cnp, nameiop, kcred, 0, |
1380 | B_FALSE); | |
9f0a21e6 MM |
1381 | } |
1382 | #ifdef ZFS_DEBUG | |
1383 | if (error) { | |
1384 | printf("got error %d on name %s on op %d\n", error, name, | |
1385 | nameiop); | |
1386 | kdb_backtrace(); | |
1387 | } | |
1388 | #endif | |
1389 | return (error); | |
1390 | } | |
1391 | ||
1392 | int | |
4d55ea81 | 1393 | zfs_remove(znode_t *dzp, const char *name, cred_t *cr, int flags) |
9f0a21e6 MM |
1394 | { |
1395 | vnode_t *vp; | |
1396 | int error; | |
1397 | struct componentname cn; | |
1398 | ||
1399 | if ((error = zfs_lookup_internal(dzp, name, &vp, &cn, DELETE))) | |
1400 | return (error); | |
1401 | ||
1402 | error = zfs_remove_(ZTOV(dzp), vp, name, cr); | |
1403 | vput(vp); | |
1404 | return (error); | |
1405 | } | |
1406 | /* | |
1407 | * Create a new directory and insert it into dvp using the name | |
1408 | * provided. Return a pointer to the inserted directory. | |
1409 | * | |
1410 | * IN: dvp - vnode of directory to add subdir to. | |
1411 | * dirname - name of new directory. | |
1412 | * vap - attributes of new directory. | |
1413 | * cr - credentials of caller. | |
1414 | * ct - caller context | |
1415 | * flags - case flags | |
1416 | * vsecp - ACL to be set | |
2a068a13 | 1417 | * mnt_ns - Unused on FreeBSD |
9f0a21e6 MM |
1418 | * |
1419 | * OUT: vpp - vnode of created directory. | |
1420 | * | |
1421 | * RETURN: 0 on success, error code on failure. | |
1422 | * | |
1423 | * Timestamps: | |
1424 | * dvp - ctime|mtime updated | |
1425 | * vp - ctime|mtime|atime updated | |
1426 | */ | |
9f0a21e6 | 1427 | int |
4d55ea81 | 1428 | zfs_mkdir(znode_t *dzp, const char *dirname, vattr_t *vap, znode_t **zpp, |
d4dc53da | 1429 | cred_t *cr, int flags, vsecattr_t *vsecp, zidmap_t *mnt_ns) |
9f0a21e6 | 1430 | { |
ef70eff1 | 1431 | (void) flags, (void) vsecp; |
9f0a21e6 MM |
1432 | znode_t *zp; |
1433 | zfsvfs_t *zfsvfs = dzp->z_zfsvfs; | |
1434 | zilog_t *zilog; | |
1435 | uint64_t txtype; | |
1436 | dmu_tx_t *tx; | |
1437 | int error; | |
d42979c6 | 1438 | uid_t uid = crgetuid(cr); |
9f0a21e6 MM |
1439 | gid_t gid = crgetgid(cr); |
1440 | zfs_acl_ids_t acl_ids; | |
1441 | boolean_t fuid_dirtied; | |
1442 | ||
e4efb709 | 1443 | ASSERT3U(vap->va_type, ==, VDIR); |
9f0a21e6 MM |
1444 | |
1445 | /* | |
1446 | * If we have an ephemeral id, ACL, or XVATTR then | |
1447 | * make sure file system is at proper version | |
1448 | */ | |
9f0a21e6 MM |
1449 | if (zfsvfs->z_use_fuids == B_FALSE && |
1450 | ((vap->va_mask & AT_XVATTR) || | |
1451 | IS_EPHEMERAL(uid) || IS_EPHEMERAL(gid))) | |
1452 | return (SET_ERROR(EINVAL)); | |
1453 | ||
768eaced CC |
1454 | if ((error = zfs_enter_verify_zp(zfsvfs, dzp, FTAG)) != 0) |
1455 | return (error); | |
9f0a21e6 MM |
1456 | zilog = zfsvfs->z_log; |
1457 | ||
1458 | if (dzp->z_pflags & ZFS_XATTR) { | |
768eaced | 1459 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1460 | return (SET_ERROR(EINVAL)); |
1461 | } | |
1462 | ||
1463 | if (zfsvfs->z_utf8 && u8_validate(dirname, | |
1464 | strlen(dirname), NULL, U8_VALIDATE_ENTIRE, &error) < 0) { | |
768eaced | 1465 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1466 | return (SET_ERROR(EILSEQ)); |
1467 | } | |
1468 | ||
1469 | if (vap->va_mask & AT_XVATTR) { | |
1470 | if ((error = secpolicy_xvattr(ZTOV(dzp), (xvattr_t *)vap, | |
1471 | crgetuid(cr), cr, vap->va_type)) != 0) { | |
768eaced | 1472 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1473 | return (error); |
1474 | } | |
1475 | } | |
1476 | ||
1477 | if ((error = zfs_acl_ids_create(dzp, 0, vap, cr, | |
2a068a13 | 1478 | NULL, &acl_ids, NULL)) != 0) { |
768eaced | 1479 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1480 | return (error); |
1481 | } | |
1482 | ||
1483 | /* | |
1484 | * First make sure the new directory doesn't exist. | |
1485 | * | |
1486 | * Existence is checked first to make sure we don't return | |
1487 | * EACCES instead of EEXIST which can cause some applications | |
1488 | * to fail. | |
1489 | */ | |
1490 | *zpp = NULL; | |
1491 | ||
1492 | if ((error = zfs_dirent_lookup(dzp, dirname, &zp, ZNEW))) { | |
1493 | zfs_acl_ids_free(&acl_ids); | |
768eaced | 1494 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1495 | return (error); |
1496 | } | |
1497 | ASSERT3P(zp, ==, NULL); | |
1498 | ||
2a068a13 YY |
1499 | if ((error = zfs_zaccess(dzp, ACE_ADD_SUBDIRECTORY, 0, B_FALSE, cr, |
1500 | mnt_ns))) { | |
9f0a21e6 | 1501 | zfs_acl_ids_free(&acl_ids); |
768eaced | 1502 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1503 | return (error); |
1504 | } | |
1505 | ||
1506 | if (zfs_acl_ids_overquota(zfsvfs, &acl_ids, zfs_inherit_projid(dzp))) { | |
1507 | zfs_acl_ids_free(&acl_ids); | |
768eaced | 1508 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1509 | return (SET_ERROR(EDQUOT)); |
1510 | } | |
1511 | ||
1512 | /* | |
1513 | * Add a new entry to the directory. | |
1514 | */ | |
1515 | getnewvnode_reserve_(); | |
1516 | tx = dmu_tx_create(zfsvfs->z_os); | |
1517 | dmu_tx_hold_zap(tx, dzp->z_id, TRUE, dirname); | |
1518 | dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL); | |
1519 | fuid_dirtied = zfsvfs->z_fuid_dirty; | |
1520 | if (fuid_dirtied) | |
1521 | zfs_fuid_txhold(zfsvfs, tx); | |
1522 | if (!zfsvfs->z_use_sa && acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE) { | |
1523 | dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, | |
1524 | acl_ids.z_aclp->z_acl_bytes); | |
1525 | } | |
1526 | ||
1527 | dmu_tx_hold_sa_create(tx, acl_ids.z_aclp->z_acl_bytes + | |
1528 | ZFS_SA_BASE_ATTR_SIZE); | |
1529 | ||
1530 | error = dmu_tx_assign(tx, TXG_WAIT); | |
1531 | if (error) { | |
1532 | zfs_acl_ids_free(&acl_ids); | |
1533 | dmu_tx_abort(tx); | |
1534 | getnewvnode_drop_reserve(); | |
768eaced | 1535 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1536 | return (error); |
1537 | } | |
1538 | ||
1539 | /* | |
1540 | * Create new node. | |
1541 | */ | |
1542 | zfs_mknode(dzp, vap, tx, cr, 0, &zp, &acl_ids); | |
1543 | ||
9f0a21e6 MM |
1544 | /* |
1545 | * Now put new name in parent dir. | |
1546 | */ | |
efbef9e6 AM |
1547 | error = zfs_link_create(dzp, dirname, zp, tx, ZNEW); |
1548 | if (error != 0) { | |
1549 | zfs_znode_delete(zp, tx); | |
1550 | VOP_UNLOCK1(ZTOV(zp)); | |
1551 | zrele(zp); | |
1552 | goto out; | |
1553 | } | |
1554 | ||
1555 | if (fuid_dirtied) | |
1556 | zfs_fuid_sync(zfsvfs, tx); | |
9f0a21e6 MM |
1557 | |
1558 | *zpp = zp; | |
1559 | ||
1560 | txtype = zfs_log_create_txtype(Z_DIR, NULL, vap); | |
1561 | zfs_log_create(zilog, tx, txtype, dzp, zp, dirname, NULL, | |
1562 | acl_ids.z_fuidp, vap); | |
1563 | ||
efbef9e6 | 1564 | out: |
9f0a21e6 MM |
1565 | zfs_acl_ids_free(&acl_ids); |
1566 | ||
1567 | dmu_tx_commit(tx); | |
1568 | ||
1569 | getnewvnode_drop_reserve(); | |
1570 | ||
1571 | if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS) | |
1572 | zil_commit(zilog, 0); | |
1573 | ||
768eaced | 1574 | zfs_exit(zfsvfs, FTAG); |
efbef9e6 | 1575 | return (error); |
9f0a21e6 MM |
1576 | } |
1577 | ||
115216cc MG |
1578 | #if __FreeBSD_version < 1300124 |
1579 | static void | |
1580 | cache_vop_rmdir(struct vnode *dvp, struct vnode *vp) | |
1581 | { | |
1582 | ||
1583 | cache_purge(dvp); | |
1584 | cache_purge(vp); | |
1585 | } | |
1586 | #endif | |
1587 | ||
9f0a21e6 MM |
1588 | /* |
1589 | * Remove a directory subdir entry. If the current working | |
1590 | * directory is the same as the subdir to be removed, the | |
1591 | * remove will fail. | |
1592 | * | |
1593 | * IN: dvp - vnode of directory to remove from. | |
1594 | * name - name of directory to be removed. | |
1595 | * cwd - vnode of current working directory. | |
1596 | * cr - credentials of caller. | |
1597 | * ct - caller context | |
1598 | * flags - case flags | |
1599 | * | |
1600 | * RETURN: 0 on success, error code on failure. | |
1601 | * | |
1602 | * Timestamps: | |
1603 | * dvp - ctime|mtime updated | |
1604 | */ | |
9f0a21e6 | 1605 | static int |
4d55ea81 | 1606 | zfs_rmdir_(vnode_t *dvp, vnode_t *vp, const char *name, cred_t *cr) |
9f0a21e6 MM |
1607 | { |
1608 | znode_t *dzp = VTOZ(dvp); | |
1609 | znode_t *zp = VTOZ(vp); | |
1610 | zfsvfs_t *zfsvfs = dzp->z_zfsvfs; | |
1611 | zilog_t *zilog; | |
1612 | dmu_tx_t *tx; | |
1613 | int error; | |
1614 | ||
768eaced CC |
1615 | if ((error = zfs_enter_verify_zp(zfsvfs, dzp, FTAG)) != 0) |
1616 | return (error); | |
1617 | if ((error = zfs_verify_zp(zp)) != 0) { | |
1618 | zfs_exit(zfsvfs, FTAG); | |
1619 | return (error); | |
1620 | } | |
9f0a21e6 MM |
1621 | zilog = zfsvfs->z_log; |
1622 | ||
1623 | ||
2a068a13 | 1624 | if ((error = zfs_zaccess_delete(dzp, zp, cr, NULL))) { |
9f0a21e6 MM |
1625 | goto out; |
1626 | } | |
1627 | ||
1628 | if (vp->v_type != VDIR) { | |
1629 | error = SET_ERROR(ENOTDIR); | |
1630 | goto out; | |
1631 | } | |
1632 | ||
1633 | vnevent_rmdir(vp, dvp, name, ct); | |
1634 | ||
1635 | tx = dmu_tx_create(zfsvfs->z_os); | |
1636 | dmu_tx_hold_zap(tx, dzp->z_id, FALSE, name); | |
1637 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); | |
1638 | dmu_tx_hold_zap(tx, zfsvfs->z_unlinkedobj, FALSE, NULL); | |
1639 | zfs_sa_upgrade_txholds(tx, zp); | |
1640 | zfs_sa_upgrade_txholds(tx, dzp); | |
1641 | dmu_tx_mark_netfree(tx); | |
1642 | error = dmu_tx_assign(tx, TXG_WAIT); | |
1643 | if (error) { | |
1644 | dmu_tx_abort(tx); | |
768eaced | 1645 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1646 | return (error); |
1647 | } | |
1648 | ||
9f0a21e6 MM |
1649 | error = zfs_link_destroy(dzp, name, zp, tx, ZEXISTS, NULL); |
1650 | ||
1651 | if (error == 0) { | |
1652 | uint64_t txtype = TX_RMDIR; | |
1653 | zfs_log_remove(zilog, tx, txtype, dzp, name, | |
1654 | ZFS_NO_OBJECT, B_FALSE); | |
1655 | } | |
1656 | ||
1657 | dmu_tx_commit(tx); | |
1658 | ||
a55254be AG |
1659 | if (zfsvfs->z_use_namecache) |
1660 | cache_vop_rmdir(dvp, vp); | |
9f0a21e6 MM |
1661 | out: |
1662 | if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS) | |
1663 | zil_commit(zilog, 0); | |
1664 | ||
768eaced | 1665 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1666 | return (error); |
1667 | } | |
1668 | ||
1669 | int | |
4d55ea81 | 1670 | zfs_rmdir(znode_t *dzp, const char *name, znode_t *cwd, cred_t *cr, int flags) |
9f0a21e6 MM |
1671 | { |
1672 | struct componentname cn; | |
1673 | vnode_t *vp; | |
1674 | int error; | |
1675 | ||
1676 | if ((error = zfs_lookup_internal(dzp, name, &vp, &cn, DELETE))) | |
1677 | return (error); | |
1678 | ||
1679 | error = zfs_rmdir_(ZTOV(dzp), vp, name, cr); | |
1680 | vput(vp); | |
1681 | return (error); | |
1682 | } | |
1683 | ||
1684 | /* | |
1685 | * Read as many directory entries as will fit into the provided | |
1686 | * buffer from the given directory cursor position (specified in | |
1687 | * the uio structure). | |
1688 | * | |
1689 | * IN: vp - vnode of directory to read. | |
1690 | * uio - structure supplying read location, range info, | |
1691 | * and return buffer. | |
1692 | * cr - credentials of caller. | |
1693 | * ct - caller context | |
9f0a21e6 MM |
1694 | * |
1695 | * OUT: uio - updated offset and range, buffer filled. | |
1696 | * eofp - set to true if end-of-file detected. | |
3f400b0f RY |
1697 | * ncookies- number of entries in cookies |
1698 | * cookies - offsets to directory entries | |
9f0a21e6 MM |
1699 | * |
1700 | * RETURN: 0 on success, error code on failure. | |
1701 | * | |
1702 | * Timestamps: | |
1703 | * vp - atime updated | |
1704 | * | |
1705 | * Note that the low 4 bits of the cookie returned by zap is always zero. | |
1706 | * This allows us to use the low range for "special" directory entries: | |
1707 | * We use 0 for '.', and 1 for '..'. If this is the root of the filesystem, | |
1708 | * we use the offset 2 for the '.zfs' directory. | |
1709 | */ | |
9f0a21e6 | 1710 | static int |
d0cd9a5c | 1711 | zfs_readdir(vnode_t *vp, zfs_uio_t *uio, cred_t *cr, int *eofp, |
ca1b2bb4 | 1712 | int *ncookies, cookie_t **cookies) |
9f0a21e6 MM |
1713 | { |
1714 | znode_t *zp = VTOZ(vp); | |
1715 | iovec_t *iovp; | |
9f0a21e6 MM |
1716 | dirent64_t *odp; |
1717 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
1718 | objset_t *os; | |
1719 | caddr_t outbuf; | |
1720 | size_t bufsize; | |
1721 | zap_cursor_t zc; | |
1722 | zap_attribute_t zap; | |
1723 | uint_t bytes_wanted; | |
1724 | uint64_t offset; /* must be unsigned; checks for < 1 */ | |
1725 | uint64_t parent; | |
1726 | int local_eof; | |
1727 | int outcount; | |
1728 | int error; | |
1729 | uint8_t prefetch; | |
9f0a21e6 MM |
1730 | uint8_t type; |
1731 | int ncooks; | |
ca1b2bb4 | 1732 | cookie_t *cooks = NULL; |
9f0a21e6 | 1733 | |
768eaced CC |
1734 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
1735 | return (error); | |
9f0a21e6 MM |
1736 | |
1737 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_PARENT(zfsvfs), | |
1738 | &parent, sizeof (parent))) != 0) { | |
768eaced | 1739 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1740 | return (error); |
1741 | } | |
1742 | ||
1743 | /* | |
1744 | * If we are not given an eof variable, | |
1745 | * use a local one. | |
1746 | */ | |
1747 | if (eofp == NULL) | |
1748 | eofp = &local_eof; | |
1749 | ||
1750 | /* | |
1751 | * Check for valid iov_len. | |
1752 | */ | |
d0cd9a5c | 1753 | if (GET_UIO_STRUCT(uio)->uio_iov->iov_len <= 0) { |
768eaced | 1754 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1755 | return (SET_ERROR(EINVAL)); |
1756 | } | |
1757 | ||
1758 | /* | |
1759 | * Quit if directory has been removed (posix) | |
1760 | */ | |
1761 | if ((*eofp = zp->z_unlinked) != 0) { | |
768eaced | 1762 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1763 | return (0); |
1764 | } | |
1765 | ||
1766 | error = 0; | |
1767 | os = zfsvfs->z_os; | |
d0cd9a5c | 1768 | offset = zfs_uio_offset(uio); |
9f0a21e6 MM |
1769 | prefetch = zp->z_zn_prefetch; |
1770 | ||
1771 | /* | |
1772 | * Initialize the iterator cursor. | |
1773 | */ | |
1774 | if (offset <= 3) { | |
1775 | /* | |
1776 | * Start iteration from the beginning of the directory. | |
1777 | */ | |
1778 | zap_cursor_init(&zc, os, zp->z_id); | |
1779 | } else { | |
1780 | /* | |
1781 | * The offset is a serialized cursor. | |
1782 | */ | |
1783 | zap_cursor_init_serialized(&zc, os, zp->z_id, offset); | |
1784 | } | |
1785 | ||
1786 | /* | |
1787 | * Get space to change directory entries into fs independent format. | |
1788 | */ | |
d0cd9a5c | 1789 | iovp = GET_UIO_STRUCT(uio)->uio_iov; |
9f0a21e6 | 1790 | bytes_wanted = iovp->iov_len; |
d0cd9a5c | 1791 | if (zfs_uio_segflg(uio) != UIO_SYSSPACE || zfs_uio_iovcnt(uio) != 1) { |
9f0a21e6 MM |
1792 | bufsize = bytes_wanted; |
1793 | outbuf = kmem_alloc(bufsize, KM_SLEEP); | |
1794 | odp = (struct dirent64 *)outbuf; | |
1795 | } else { | |
1796 | bufsize = bytes_wanted; | |
1797 | outbuf = NULL; | |
1798 | odp = (struct dirent64 *)iovp->iov_base; | |
1799 | } | |
9f0a21e6 MM |
1800 | |
1801 | if (ncookies != NULL) { | |
1802 | /* | |
1803 | * Minimum entry size is dirent size and 1 byte for a file name. | |
1804 | */ | |
d0cd9a5c | 1805 | ncooks = zfs_uio_resid(uio) / (sizeof (struct dirent) - |
9f0a21e6 | 1806 | sizeof (((struct dirent *)NULL)->d_name) + 1); |
ca1b2bb4 | 1807 | cooks = malloc(ncooks * sizeof (*cooks), M_TEMP, M_WAITOK); |
9f0a21e6 MM |
1808 | *cookies = cooks; |
1809 | *ncookies = ncooks; | |
1810 | } | |
9f0a21e6 MM |
1811 | |
1812 | /* | |
1813 | * Transform to file-system independent format | |
1814 | */ | |
1815 | outcount = 0; | |
1816 | while (outcount < bytes_wanted) { | |
1817 | ino64_t objnum; | |
1818 | ushort_t reclen; | |
1819 | off64_t *next = NULL; | |
1820 | ||
1821 | /* | |
1822 | * Special case `.', `..', and `.zfs'. | |
1823 | */ | |
1824 | if (offset == 0) { | |
1825 | (void) strcpy(zap.za_name, "."); | |
1826 | zap.za_normalization_conflict = 0; | |
1827 | objnum = zp->z_id; | |
1828 | type = DT_DIR; | |
1829 | } else if (offset == 1) { | |
1830 | (void) strcpy(zap.za_name, ".."); | |
1831 | zap.za_normalization_conflict = 0; | |
1832 | objnum = parent; | |
1833 | type = DT_DIR; | |
1834 | } else if (offset == 2 && zfs_show_ctldir(zp)) { | |
1835 | (void) strcpy(zap.za_name, ZFS_CTLDIR_NAME); | |
1836 | zap.za_normalization_conflict = 0; | |
1837 | objnum = ZFSCTL_INO_ROOT; | |
1838 | type = DT_DIR; | |
1839 | } else { | |
1840 | /* | |
1841 | * Grab next entry. | |
1842 | */ | |
1843 | if ((error = zap_cursor_retrieve(&zc, &zap))) { | |
1844 | if ((*eofp = (error == ENOENT)) != 0) | |
1845 | break; | |
1846 | else | |
1847 | goto update; | |
1848 | } | |
1849 | ||
1850 | if (zap.za_integer_length != 8 || | |
1851 | zap.za_num_integers != 1) { | |
1852 | cmn_err(CE_WARN, "zap_readdir: bad directory " | |
1853 | "entry, obj = %lld, offset = %lld\n", | |
1854 | (u_longlong_t)zp->z_id, | |
1855 | (u_longlong_t)offset); | |
1856 | error = SET_ERROR(ENXIO); | |
1857 | goto update; | |
1858 | } | |
1859 | ||
1860 | objnum = ZFS_DIRENT_OBJ(zap.za_first_integer); | |
1861 | /* | |
1862 | * MacOS X can extract the object type here such as: | |
1863 | * uint8_t type = ZFS_DIRENT_TYPE(zap.za_first_integer); | |
1864 | */ | |
1865 | type = ZFS_DIRENT_TYPE(zap.za_first_integer); | |
9f0a21e6 MM |
1866 | } |
1867 | ||
3f400b0f | 1868 | reclen = DIRENT64_RECLEN(strlen(zap.za_name)); |
9f0a21e6 MM |
1869 | |
1870 | /* | |
1871 | * Will this entry fit in the buffer? | |
1872 | */ | |
1873 | if (outcount + reclen > bufsize) { | |
1874 | /* | |
1875 | * Did we manage to fit anything in the buffer? | |
1876 | */ | |
1877 | if (!outcount) { | |
1878 | error = SET_ERROR(EINVAL); | |
1879 | goto update; | |
1880 | } | |
1881 | break; | |
1882 | } | |
3f400b0f RY |
1883 | /* |
1884 | * Add normal entry: | |
1885 | */ | |
1886 | odp->d_ino = objnum; | |
1887 | odp->d_reclen = reclen; | |
1888 | odp->d_namlen = strlen(zap.za_name); | |
1889 | /* NOTE: d_off is the offset for the *next* entry. */ | |
1890 | next = &odp->d_off; | |
1891 | strlcpy(odp->d_name, zap.za_name, odp->d_namlen + 1); | |
1892 | odp->d_type = type; | |
1893 | dirent_terminate(odp); | |
1894 | odp = (dirent64_t *)((intptr_t)odp + reclen); | |
1895 | ||
9f0a21e6 MM |
1896 | outcount += reclen; |
1897 | ||
e4efb709 | 1898 | ASSERT3S(outcount, <=, bufsize); |
9f0a21e6 | 1899 | |
9f0a21e6 | 1900 | if (prefetch) |
6c94e649 | 1901 | dmu_prefetch_dnode(os, objnum, ZIO_PRIORITY_SYNC_READ); |
9f0a21e6 | 1902 | |
9f0a21e6 MM |
1903 | /* |
1904 | * Move to the next entry, fill in the previous offset. | |
1905 | */ | |
1906 | if (offset > 2 || (offset == 2 && !zfs_show_ctldir(zp))) { | |
1907 | zap_cursor_advance(&zc); | |
1908 | offset = zap_cursor_serialize(&zc); | |
1909 | } else { | |
1910 | offset += 1; | |
1911 | } | |
1912 | ||
1913 | /* Fill the offset right after advancing the cursor. */ | |
1914 | if (next != NULL) | |
1915 | *next = offset; | |
1916 | if (cooks != NULL) { | |
1917 | *cooks++ = offset; | |
1918 | ncooks--; | |
1919 | KASSERT(ncooks >= 0, ("ncookies=%d", ncooks)); | |
1920 | } | |
1921 | } | |
1922 | zp->z_zn_prefetch = B_FALSE; /* a lookup will re-enable pre-fetching */ | |
1923 | ||
1924 | /* Subtract unused cookies */ | |
1925 | if (ncookies != NULL) | |
1926 | *ncookies -= ncooks; | |
1927 | ||
d0cd9a5c | 1928 | if (zfs_uio_segflg(uio) == UIO_SYSSPACE && zfs_uio_iovcnt(uio) == 1) { |
9f0a21e6 MM |
1929 | iovp->iov_base += outcount; |
1930 | iovp->iov_len -= outcount; | |
d0cd9a5c BA |
1931 | zfs_uio_resid(uio) -= outcount; |
1932 | } else if ((error = | |
1933 | zfs_uiomove(outbuf, (long)outcount, UIO_READ, uio))) { | |
9f0a21e6 MM |
1934 | /* |
1935 | * Reset the pointer. | |
1936 | */ | |
d0cd9a5c | 1937 | offset = zfs_uio_offset(uio); |
9f0a21e6 MM |
1938 | } |
1939 | ||
1940 | update: | |
1941 | zap_cursor_fini(&zc); | |
d0cd9a5c | 1942 | if (zfs_uio_segflg(uio) != UIO_SYSSPACE || zfs_uio_iovcnt(uio) != 1) |
9f0a21e6 MM |
1943 | kmem_free(outbuf, bufsize); |
1944 | ||
1945 | if (error == ENOENT) | |
1946 | error = 0; | |
1947 | ||
1948 | ZFS_ACCESSTIME_STAMP(zfsvfs, zp); | |
1949 | ||
d0cd9a5c | 1950 | zfs_uio_setoffset(uio, offset); |
768eaced | 1951 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
1952 | if (error != 0 && cookies != NULL) { |
1953 | free(*cookies, M_TEMP); | |
1954 | *cookies = NULL; | |
1955 | *ncookies = 0; | |
1956 | } | |
1957 | return (error); | |
1958 | } | |
1959 | ||
9f0a21e6 MM |
1960 | /* |
1961 | * Get the requested file attributes and place them in the provided | |
1962 | * vattr structure. | |
1963 | * | |
1964 | * IN: vp - vnode of file. | |
1965 | * vap - va_mask identifies requested attributes. | |
1966 | * If AT_XVATTR set, then optional attrs are requested | |
1967 | * flags - ATTR_NOACLCHECK (CIFS server context) | |
1968 | * cr - credentials of caller. | |
1969 | * | |
1970 | * OUT: vap - attribute values. | |
1971 | * | |
1972 | * RETURN: 0 (always succeeds). | |
1973 | */ | |
9f0a21e6 MM |
1974 | static int |
1975 | zfs_getattr(vnode_t *vp, vattr_t *vap, int flags, cred_t *cr) | |
1976 | { | |
1977 | znode_t *zp = VTOZ(vp); | |
1978 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
1979 | int error = 0; | |
1980 | uint32_t blksize; | |
1981 | u_longlong_t nblocks; | |
1982 | uint64_t mtime[2], ctime[2], crtime[2], rdev; | |
1983 | xvattr_t *xvap = (xvattr_t *)vap; /* vap may be an xvattr_t * */ | |
1984 | xoptattr_t *xoap = NULL; | |
1985 | boolean_t skipaclchk = (flags & ATTR_NOACLCHECK) ? B_TRUE : B_FALSE; | |
1986 | sa_bulk_attr_t bulk[4]; | |
1987 | int count = 0; | |
1988 | ||
768eaced CC |
1989 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
1990 | return (error); | |
9f0a21e6 MM |
1991 | |
1992 | zfs_fuid_map_ids(zp, cr, &vap->va_uid, &vap->va_gid); | |
1993 | ||
1994 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, &mtime, 16); | |
1995 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, &ctime, 16); | |
1996 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CRTIME(zfsvfs), NULL, &crtime, 16); | |
1997 | if (vp->v_type == VBLK || vp->v_type == VCHR) | |
1998 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_RDEV(zfsvfs), NULL, | |
1999 | &rdev, 8); | |
2000 | ||
2001 | if ((error = sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) != 0) { | |
768eaced | 2002 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2003 | return (error); |
2004 | } | |
2005 | ||
2006 | /* | |
2007 | * If ACL is trivial don't bother looking for ACE_READ_ATTRIBUTES. | |
2008 | * Also, if we are the owner don't bother, since owner should | |
2009 | * always be allowed to read basic attributes of file. | |
2010 | */ | |
2011 | if (!(zp->z_pflags & ZFS_ACL_TRIVIAL) && | |
2012 | (vap->va_uid != crgetuid(cr))) { | |
2013 | if ((error = zfs_zaccess(zp, ACE_READ_ATTRIBUTES, 0, | |
2a068a13 | 2014 | skipaclchk, cr, NULL))) { |
768eaced | 2015 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2016 | return (error); |
2017 | } | |
2018 | } | |
2019 | ||
2020 | /* | |
2021 | * Return all attributes. It's cheaper to provide the answer | |
2022 | * than to determine whether we were asked the question. | |
2023 | */ | |
2024 | ||
2025 | vap->va_type = IFTOVT(zp->z_mode); | |
2026 | vap->va_mode = zp->z_mode & ~S_IFMT; | |
2027 | vn_fsid(vp, vap); | |
2028 | vap->va_nodeid = zp->z_id; | |
2029 | vap->va_nlink = zp->z_links; | |
2030 | if ((vp->v_flag & VROOT) && zfs_show_ctldir(zp) && | |
2031 | zp->z_links < ZFS_LINK_MAX) | |
2032 | vap->va_nlink++; | |
2033 | vap->va_size = zp->z_size; | |
2034 | if (vp->v_type == VBLK || vp->v_type == VCHR) | |
2035 | vap->va_rdev = zfs_cmpldev(rdev); | |
11656234 MJ |
2036 | else |
2037 | vap->va_rdev = 0; | |
92a9e8c6 | 2038 | vap->va_gen = zp->z_gen; |
9f0a21e6 MM |
2039 | vap->va_flags = 0; /* FreeBSD: Reset chflags(2) flags. */ |
2040 | vap->va_filerev = zp->z_seq; | |
2041 | ||
2042 | /* | |
2043 | * Add in any requested optional attributes and the create time. | |
2044 | * Also set the corresponding bits in the returned attribute bitmap. | |
2045 | */ | |
2046 | if ((xoap = xva_getxoptattr(xvap)) != NULL && zfsvfs->z_use_fuids) { | |
2047 | if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) { | |
2048 | xoap->xoa_archive = | |
2049 | ((zp->z_pflags & ZFS_ARCHIVE) != 0); | |
2050 | XVA_SET_RTN(xvap, XAT_ARCHIVE); | |
2051 | } | |
2052 | ||
2053 | if (XVA_ISSET_REQ(xvap, XAT_READONLY)) { | |
2054 | xoap->xoa_readonly = | |
2055 | ((zp->z_pflags & ZFS_READONLY) != 0); | |
2056 | XVA_SET_RTN(xvap, XAT_READONLY); | |
2057 | } | |
2058 | ||
2059 | if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) { | |
2060 | xoap->xoa_system = | |
2061 | ((zp->z_pflags & ZFS_SYSTEM) != 0); | |
2062 | XVA_SET_RTN(xvap, XAT_SYSTEM); | |
2063 | } | |
2064 | ||
2065 | if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) { | |
2066 | xoap->xoa_hidden = | |
2067 | ((zp->z_pflags & ZFS_HIDDEN) != 0); | |
2068 | XVA_SET_RTN(xvap, XAT_HIDDEN); | |
2069 | } | |
2070 | ||
2071 | if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { | |
2072 | xoap->xoa_nounlink = | |
2073 | ((zp->z_pflags & ZFS_NOUNLINK) != 0); | |
2074 | XVA_SET_RTN(xvap, XAT_NOUNLINK); | |
2075 | } | |
2076 | ||
2077 | if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { | |
2078 | xoap->xoa_immutable = | |
2079 | ((zp->z_pflags & ZFS_IMMUTABLE) != 0); | |
2080 | XVA_SET_RTN(xvap, XAT_IMMUTABLE); | |
2081 | } | |
2082 | ||
2083 | if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { | |
2084 | xoap->xoa_appendonly = | |
2085 | ((zp->z_pflags & ZFS_APPENDONLY) != 0); | |
2086 | XVA_SET_RTN(xvap, XAT_APPENDONLY); | |
2087 | } | |
2088 | ||
2089 | if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { | |
2090 | xoap->xoa_nodump = | |
2091 | ((zp->z_pflags & ZFS_NODUMP) != 0); | |
2092 | XVA_SET_RTN(xvap, XAT_NODUMP); | |
2093 | } | |
2094 | ||
2095 | if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) { | |
2096 | xoap->xoa_opaque = | |
2097 | ((zp->z_pflags & ZFS_OPAQUE) != 0); | |
2098 | XVA_SET_RTN(xvap, XAT_OPAQUE); | |
2099 | } | |
2100 | ||
2101 | if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { | |
2102 | xoap->xoa_av_quarantined = | |
2103 | ((zp->z_pflags & ZFS_AV_QUARANTINED) != 0); | |
2104 | XVA_SET_RTN(xvap, XAT_AV_QUARANTINED); | |
2105 | } | |
2106 | ||
2107 | if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { | |
2108 | xoap->xoa_av_modified = | |
2109 | ((zp->z_pflags & ZFS_AV_MODIFIED) != 0); | |
2110 | XVA_SET_RTN(xvap, XAT_AV_MODIFIED); | |
2111 | } | |
2112 | ||
2113 | if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP) && | |
2114 | vp->v_type == VREG) { | |
2115 | zfs_sa_get_scanstamp(zp, xvap); | |
2116 | } | |
2117 | ||
2118 | if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { | |
2119 | xoap->xoa_reparse = ((zp->z_pflags & ZFS_REPARSE) != 0); | |
2120 | XVA_SET_RTN(xvap, XAT_REPARSE); | |
2121 | } | |
2122 | if (XVA_ISSET_REQ(xvap, XAT_GEN)) { | |
2123 | xoap->xoa_generation = zp->z_gen; | |
2124 | XVA_SET_RTN(xvap, XAT_GEN); | |
2125 | } | |
2126 | ||
2127 | if (XVA_ISSET_REQ(xvap, XAT_OFFLINE)) { | |
2128 | xoap->xoa_offline = | |
2129 | ((zp->z_pflags & ZFS_OFFLINE) != 0); | |
2130 | XVA_SET_RTN(xvap, XAT_OFFLINE); | |
2131 | } | |
2132 | ||
2133 | if (XVA_ISSET_REQ(xvap, XAT_SPARSE)) { | |
2134 | xoap->xoa_sparse = | |
2135 | ((zp->z_pflags & ZFS_SPARSE) != 0); | |
2136 | XVA_SET_RTN(xvap, XAT_SPARSE); | |
2137 | } | |
2138 | ||
2139 | if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT)) { | |
2140 | xoap->xoa_projinherit = | |
2141 | ((zp->z_pflags & ZFS_PROJINHERIT) != 0); | |
2142 | XVA_SET_RTN(xvap, XAT_PROJINHERIT); | |
2143 | } | |
2144 | ||
2145 | if (XVA_ISSET_REQ(xvap, XAT_PROJID)) { | |
2146 | xoap->xoa_projid = zp->z_projid; | |
2147 | XVA_SET_RTN(xvap, XAT_PROJID); | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | ZFS_TIME_DECODE(&vap->va_atime, zp->z_atime); | |
2152 | ZFS_TIME_DECODE(&vap->va_mtime, mtime); | |
2153 | ZFS_TIME_DECODE(&vap->va_ctime, ctime); | |
2154 | ZFS_TIME_DECODE(&vap->va_birthtime, crtime); | |
2155 | ||
2156 | ||
2157 | sa_object_size(zp->z_sa_hdl, &blksize, &nblocks); | |
2158 | vap->va_blksize = blksize; | |
2159 | vap->va_bytes = nblocks << 9; /* nblocks * 512 */ | |
2160 | ||
2161 | if (zp->z_blksz == 0) { | |
2162 | /* | |
2163 | * Block size hasn't been set; suggest maximal I/O transfers. | |
2164 | */ | |
2165 | vap->va_blksize = zfsvfs->z_max_blksz; | |
2166 | } | |
2167 | ||
768eaced | 2168 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2169 | return (0); |
2170 | } | |
2171 | ||
2172 | /* | |
2173 | * Set the file attributes to the values contained in the | |
2174 | * vattr structure. | |
2175 | * | |
2176 | * IN: zp - znode of file to be modified. | |
2177 | * vap - new attribute values. | |
2178 | * If AT_XVATTR set, then optional attrs are being set | |
2179 | * flags - ATTR_UTIME set if non-default time values provided. | |
2180 | * - ATTR_NOACLCHECK (CIFS context only). | |
2181 | * cr - credentials of caller. | |
2a068a13 | 2182 | * mnt_ns - Unused on FreeBSD |
9f0a21e6 MM |
2183 | * |
2184 | * RETURN: 0 on success, error code on failure. | |
2185 | * | |
2186 | * Timestamps: | |
2187 | * vp - ctime updated, mtime updated if size changed. | |
2188 | */ | |
9f0a21e6 | 2189 | int |
d4dc53da | 2190 | zfs_setattr(znode_t *zp, vattr_t *vap, int flags, cred_t *cr, zidmap_t *mnt_ns) |
9f0a21e6 MM |
2191 | { |
2192 | vnode_t *vp = ZTOV(zp); | |
2193 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
68a7a9ed | 2194 | objset_t *os; |
9f0a21e6 MM |
2195 | zilog_t *zilog; |
2196 | dmu_tx_t *tx; | |
2197 | vattr_t oldva; | |
2198 | xvattr_t tmpxvattr; | |
2199 | uint_t mask = vap->va_mask; | |
2200 | uint_t saved_mask = 0; | |
2201 | uint64_t saved_mode; | |
2202 | int trim_mask = 0; | |
2203 | uint64_t new_mode; | |
2204 | uint64_t new_uid, new_gid; | |
2205 | uint64_t xattr_obj; | |
2206 | uint64_t mtime[2], ctime[2]; | |
2207 | uint64_t projid = ZFS_INVALID_PROJID; | |
2208 | znode_t *attrzp; | |
2209 | int need_policy = FALSE; | |
2210 | int err, err2; | |
2211 | zfs_fuid_info_t *fuidp = NULL; | |
2212 | xvattr_t *xvap = (xvattr_t *)vap; /* vap may be an xvattr_t * */ | |
2213 | xoptattr_t *xoap; | |
2214 | zfs_acl_t *aclp; | |
2215 | boolean_t skipaclchk = (flags & ATTR_NOACLCHECK) ? B_TRUE : B_FALSE; | |
2216 | boolean_t fuid_dirtied = B_FALSE; | |
2217 | sa_bulk_attr_t bulk[7], xattr_bulk[7]; | |
2218 | int count = 0, xattr_count = 0; | |
2219 | ||
2220 | if (mask == 0) | |
2221 | return (0); | |
2222 | ||
2223 | if (mask & AT_NOSET) | |
2224 | return (SET_ERROR(EINVAL)); | |
2225 | ||
768eaced CC |
2226 | if ((err = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
2227 | return (err); | |
9f0a21e6 | 2228 | |
68a7a9ed | 2229 | os = zfsvfs->z_os; |
9f0a21e6 MM |
2230 | zilog = zfsvfs->z_log; |
2231 | ||
2232 | /* | |
2233 | * Make sure that if we have ephemeral uid/gid or xvattr specified | |
2234 | * that file system is at proper version level | |
2235 | */ | |
2236 | ||
2237 | if (zfsvfs->z_use_fuids == B_FALSE && | |
2238 | (((mask & AT_UID) && IS_EPHEMERAL(vap->va_uid)) || | |
2239 | ((mask & AT_GID) && IS_EPHEMERAL(vap->va_gid)) || | |
2240 | (mask & AT_XVATTR))) { | |
768eaced | 2241 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2242 | return (SET_ERROR(EINVAL)); |
2243 | } | |
2244 | ||
2245 | if (mask & AT_SIZE && vp->v_type == VDIR) { | |
768eaced | 2246 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2247 | return (SET_ERROR(EISDIR)); |
2248 | } | |
2249 | ||
2250 | if (mask & AT_SIZE && vp->v_type != VREG && vp->v_type != VFIFO) { | |
768eaced | 2251 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2252 | return (SET_ERROR(EINVAL)); |
2253 | } | |
2254 | ||
2255 | /* | |
2256 | * If this is an xvattr_t, then get a pointer to the structure of | |
2257 | * optional attributes. If this is NULL, then we have a vattr_t. | |
2258 | */ | |
2259 | xoap = xva_getxoptattr(xvap); | |
2260 | ||
2261 | xva_init(&tmpxvattr); | |
2262 | ||
2263 | /* | |
2264 | * Immutable files can only alter immutable bit and atime | |
2265 | */ | |
2266 | if ((zp->z_pflags & ZFS_IMMUTABLE) && | |
2267 | ((mask & (AT_SIZE|AT_UID|AT_GID|AT_MTIME|AT_MODE)) || | |
2268 | ((mask & AT_XVATTR) && XVA_ISSET_REQ(xvap, XAT_CREATETIME)))) { | |
768eaced | 2269 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2270 | return (SET_ERROR(EPERM)); |
2271 | } | |
2272 | ||
2273 | /* | |
2274 | * Note: ZFS_READONLY is handled in zfs_zaccess_common. | |
2275 | */ | |
2276 | ||
2277 | /* | |
2278 | * Verify timestamps doesn't overflow 32 bits. | |
2279 | * ZFS can handle large timestamps, but 32bit syscalls can't | |
2280 | * handle times greater than 2039. This check should be removed | |
2281 | * once large timestamps are fully supported. | |
2282 | */ | |
2283 | if (mask & (AT_ATIME | AT_MTIME)) { | |
2284 | if (((mask & AT_ATIME) && TIMESPEC_OVERFLOW(&vap->va_atime)) || | |
2285 | ((mask & AT_MTIME) && TIMESPEC_OVERFLOW(&vap->va_mtime))) { | |
768eaced | 2286 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2287 | return (SET_ERROR(EOVERFLOW)); |
2288 | } | |
2289 | } | |
2290 | if (xoap != NULL && (mask & AT_XVATTR)) { | |
2291 | if (XVA_ISSET_REQ(xvap, XAT_CREATETIME) && | |
2292 | TIMESPEC_OVERFLOW(&vap->va_birthtime)) { | |
768eaced | 2293 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2294 | return (SET_ERROR(EOVERFLOW)); |
2295 | } | |
2296 | ||
2297 | if (XVA_ISSET_REQ(xvap, XAT_PROJID)) { | |
2298 | if (!dmu_objset_projectquota_enabled(os) || | |
2299 | (!S_ISREG(zp->z_mode) && !S_ISDIR(zp->z_mode))) { | |
768eaced | 2300 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2301 | return (SET_ERROR(EOPNOTSUPP)); |
2302 | } | |
2303 | ||
2304 | projid = xoap->xoa_projid; | |
2305 | if (unlikely(projid == ZFS_INVALID_PROJID)) { | |
768eaced | 2306 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2307 | return (SET_ERROR(EINVAL)); |
2308 | } | |
2309 | ||
2310 | if (projid == zp->z_projid && zp->z_pflags & ZFS_PROJID) | |
2311 | projid = ZFS_INVALID_PROJID; | |
2312 | else | |
2313 | need_policy = TRUE; | |
2314 | } | |
2315 | ||
2316 | if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT) && | |
2317 | (xoap->xoa_projinherit != | |
2318 | ((zp->z_pflags & ZFS_PROJINHERIT) != 0)) && | |
2319 | (!dmu_objset_projectquota_enabled(os) || | |
2320 | (!S_ISREG(zp->z_mode) && !S_ISDIR(zp->z_mode)))) { | |
768eaced | 2321 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2322 | return (SET_ERROR(EOPNOTSUPP)); |
2323 | } | |
2324 | } | |
2325 | ||
2326 | attrzp = NULL; | |
2327 | aclp = NULL; | |
2328 | ||
2329 | if (zfsvfs->z_vfs->vfs_flag & VFS_RDONLY) { | |
768eaced | 2330 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2331 | return (SET_ERROR(EROFS)); |
2332 | } | |
2333 | ||
2334 | /* | |
2335 | * First validate permissions | |
2336 | */ | |
2337 | ||
2338 | if (mask & AT_SIZE) { | |
2339 | /* | |
2340 | * XXX - Note, we are not providing any open | |
2341 | * mode flags here (like FNDELAY), so we may | |
2342 | * block if there are locks present... this | |
2343 | * should be addressed in openat(). | |
2344 | */ | |
2345 | /* XXX - would it be OK to generate a log record here? */ | |
2346 | err = zfs_freesp(zp, vap->va_size, 0, 0, FALSE); | |
2347 | if (err) { | |
768eaced | 2348 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2349 | return (err); |
2350 | } | |
2351 | } | |
2352 | ||
2353 | if (mask & (AT_ATIME|AT_MTIME) || | |
2354 | ((mask & AT_XVATTR) && (XVA_ISSET_REQ(xvap, XAT_HIDDEN) || | |
2355 | XVA_ISSET_REQ(xvap, XAT_READONLY) || | |
2356 | XVA_ISSET_REQ(xvap, XAT_ARCHIVE) || | |
2357 | XVA_ISSET_REQ(xvap, XAT_OFFLINE) || | |
2358 | XVA_ISSET_REQ(xvap, XAT_SPARSE) || | |
2359 | XVA_ISSET_REQ(xvap, XAT_CREATETIME) || | |
2360 | XVA_ISSET_REQ(xvap, XAT_SYSTEM)))) { | |
2361 | need_policy = zfs_zaccess(zp, ACE_WRITE_ATTRIBUTES, 0, | |
2a068a13 | 2362 | skipaclchk, cr, mnt_ns); |
9f0a21e6 MM |
2363 | } |
2364 | ||
2365 | if (mask & (AT_UID|AT_GID)) { | |
2366 | int idmask = (mask & (AT_UID|AT_GID)); | |
2367 | int take_owner; | |
2368 | int take_group; | |
2369 | ||
2370 | /* | |
2371 | * NOTE: even if a new mode is being set, | |
2372 | * we may clear S_ISUID/S_ISGID bits. | |
2373 | */ | |
2374 | ||
2375 | if (!(mask & AT_MODE)) | |
2376 | vap->va_mode = zp->z_mode; | |
2377 | ||
2378 | /* | |
2379 | * Take ownership or chgrp to group we are a member of | |
2380 | */ | |
2381 | ||
2382 | take_owner = (mask & AT_UID) && (vap->va_uid == crgetuid(cr)); | |
2383 | take_group = (mask & AT_GID) && | |
2384 | zfs_groupmember(zfsvfs, vap->va_gid, cr); | |
2385 | ||
2386 | /* | |
2387 | * If both AT_UID and AT_GID are set then take_owner and | |
2388 | * take_group must both be set in order to allow taking | |
2389 | * ownership. | |
2390 | * | |
2391 | * Otherwise, send the check through secpolicy_vnode_setattr() | |
2392 | * | |
2393 | */ | |
2394 | ||
2395 | if (((idmask == (AT_UID|AT_GID)) && take_owner && take_group) || | |
2396 | ((idmask == AT_UID) && take_owner) || | |
2397 | ((idmask == AT_GID) && take_group)) { | |
2398 | if (zfs_zaccess(zp, ACE_WRITE_OWNER, 0, | |
2a068a13 | 2399 | skipaclchk, cr, mnt_ns) == 0) { |
9f0a21e6 MM |
2400 | /* |
2401 | * Remove setuid/setgid for non-privileged users | |
2402 | */ | |
2403 | secpolicy_setid_clear(vap, vp, cr); | |
2404 | trim_mask = (mask & (AT_UID|AT_GID)); | |
2405 | } else { | |
2406 | need_policy = TRUE; | |
2407 | } | |
2408 | } else { | |
2409 | need_policy = TRUE; | |
2410 | } | |
2411 | } | |
2412 | ||
2413 | oldva.va_mode = zp->z_mode; | |
2414 | zfs_fuid_map_ids(zp, cr, &oldva.va_uid, &oldva.va_gid); | |
2415 | if (mask & AT_XVATTR) { | |
2416 | /* | |
2417 | * Update xvattr mask to include only those attributes | |
2418 | * that are actually changing. | |
2419 | * | |
2420 | * the bits will be restored prior to actually setting | |
2421 | * the attributes so the caller thinks they were set. | |
2422 | */ | |
2423 | if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) { | |
2424 | if (xoap->xoa_appendonly != | |
2425 | ((zp->z_pflags & ZFS_APPENDONLY) != 0)) { | |
2426 | need_policy = TRUE; | |
2427 | } else { | |
2428 | XVA_CLR_REQ(xvap, XAT_APPENDONLY); | |
2429 | XVA_SET_REQ(&tmpxvattr, XAT_APPENDONLY); | |
2430 | } | |
2431 | } | |
2432 | ||
2433 | if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT)) { | |
2434 | if (xoap->xoa_projinherit != | |
2435 | ((zp->z_pflags & ZFS_PROJINHERIT) != 0)) { | |
2436 | need_policy = TRUE; | |
2437 | } else { | |
2438 | XVA_CLR_REQ(xvap, XAT_PROJINHERIT); | |
2439 | XVA_SET_REQ(&tmpxvattr, XAT_PROJINHERIT); | |
2440 | } | |
2441 | } | |
2442 | ||
2443 | if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) { | |
2444 | if (xoap->xoa_nounlink != | |
2445 | ((zp->z_pflags & ZFS_NOUNLINK) != 0)) { | |
2446 | need_policy = TRUE; | |
2447 | } else { | |
2448 | XVA_CLR_REQ(xvap, XAT_NOUNLINK); | |
2449 | XVA_SET_REQ(&tmpxvattr, XAT_NOUNLINK); | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) { | |
2454 | if (xoap->xoa_immutable != | |
2455 | ((zp->z_pflags & ZFS_IMMUTABLE) != 0)) { | |
2456 | need_policy = TRUE; | |
2457 | } else { | |
2458 | XVA_CLR_REQ(xvap, XAT_IMMUTABLE); | |
2459 | XVA_SET_REQ(&tmpxvattr, XAT_IMMUTABLE); | |
2460 | } | |
2461 | } | |
2462 | ||
2463 | if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) { | |
2464 | if (xoap->xoa_nodump != | |
2465 | ((zp->z_pflags & ZFS_NODUMP) != 0)) { | |
2466 | need_policy = TRUE; | |
2467 | } else { | |
2468 | XVA_CLR_REQ(xvap, XAT_NODUMP); | |
2469 | XVA_SET_REQ(&tmpxvattr, XAT_NODUMP); | |
2470 | } | |
2471 | } | |
2472 | ||
2473 | if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) { | |
2474 | if (xoap->xoa_av_modified != | |
2475 | ((zp->z_pflags & ZFS_AV_MODIFIED) != 0)) { | |
2476 | need_policy = TRUE; | |
2477 | } else { | |
2478 | XVA_CLR_REQ(xvap, XAT_AV_MODIFIED); | |
2479 | XVA_SET_REQ(&tmpxvattr, XAT_AV_MODIFIED); | |
2480 | } | |
2481 | } | |
2482 | ||
2483 | if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) { | |
2484 | if ((vp->v_type != VREG && | |
2485 | xoap->xoa_av_quarantined) || | |
2486 | xoap->xoa_av_quarantined != | |
2487 | ((zp->z_pflags & ZFS_AV_QUARANTINED) != 0)) { | |
2488 | need_policy = TRUE; | |
2489 | } else { | |
2490 | XVA_CLR_REQ(xvap, XAT_AV_QUARANTINED); | |
2491 | XVA_SET_REQ(&tmpxvattr, XAT_AV_QUARANTINED); | |
2492 | } | |
2493 | } | |
2494 | ||
2495 | if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) { | |
768eaced | 2496 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2497 | return (SET_ERROR(EPERM)); |
2498 | } | |
2499 | ||
2500 | if (need_policy == FALSE && | |
2501 | (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP) || | |
2502 | XVA_ISSET_REQ(xvap, XAT_OPAQUE))) { | |
2503 | need_policy = TRUE; | |
2504 | } | |
2505 | } | |
2506 | ||
2507 | if (mask & AT_MODE) { | |
2a068a13 YY |
2508 | if (zfs_zaccess(zp, ACE_WRITE_ACL, 0, skipaclchk, cr, |
2509 | mnt_ns) == 0) { | |
9f0a21e6 MM |
2510 | err = secpolicy_setid_setsticky_clear(vp, vap, |
2511 | &oldva, cr); | |
2512 | if (err) { | |
768eaced | 2513 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2514 | return (err); |
2515 | } | |
2516 | trim_mask |= AT_MODE; | |
2517 | } else { | |
2518 | need_policy = TRUE; | |
2519 | } | |
2520 | } | |
2521 | ||
2522 | if (need_policy) { | |
2523 | /* | |
2524 | * If trim_mask is set then take ownership | |
2525 | * has been granted or write_acl is present and user | |
2526 | * has the ability to modify mode. In that case remove | |
2527 | * UID|GID and or MODE from mask so that | |
2528 | * secpolicy_vnode_setattr() doesn't revoke it. | |
2529 | */ | |
2530 | ||
2531 | if (trim_mask) { | |
2532 | saved_mask = vap->va_mask; | |
2533 | vap->va_mask &= ~trim_mask; | |
2534 | if (trim_mask & AT_MODE) { | |
2535 | /* | |
2536 | * Save the mode, as secpolicy_vnode_setattr() | |
2537 | * will overwrite it with ova.va_mode. | |
2538 | */ | |
2539 | saved_mode = vap->va_mode; | |
2540 | } | |
2541 | } | |
2542 | err = secpolicy_vnode_setattr(cr, vp, vap, &oldva, flags, | |
2543 | (int (*)(void *, int, cred_t *))zfs_zaccess_unix, zp); | |
2544 | if (err) { | |
768eaced | 2545 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2546 | return (err); |
2547 | } | |
2548 | ||
2549 | if (trim_mask) { | |
2550 | vap->va_mask |= saved_mask; | |
2551 | if (trim_mask & AT_MODE) { | |
2552 | /* | |
2553 | * Recover the mode after | |
2554 | * secpolicy_vnode_setattr(). | |
2555 | */ | |
2556 | vap->va_mode = saved_mode; | |
2557 | } | |
2558 | } | |
2559 | } | |
2560 | ||
2561 | /* | |
2562 | * secpolicy_vnode_setattr, or take ownership may have | |
2563 | * changed va_mask | |
2564 | */ | |
2565 | mask = vap->va_mask; | |
2566 | ||
2567 | if ((mask & (AT_UID | AT_GID)) || projid != ZFS_INVALID_PROJID) { | |
2568 | err = sa_lookup(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs), | |
2569 | &xattr_obj, sizeof (xattr_obj)); | |
2570 | ||
2571 | if (err == 0 && xattr_obj) { | |
2572 | err = zfs_zget(zp->z_zfsvfs, xattr_obj, &attrzp); | |
2573 | if (err == 0) { | |
2574 | err = vn_lock(ZTOV(attrzp), LK_EXCLUSIVE); | |
2575 | if (err != 0) | |
2576 | vrele(ZTOV(attrzp)); | |
2577 | } | |
2578 | if (err) | |
2579 | goto out2; | |
2580 | } | |
2581 | if (mask & AT_UID) { | |
2582 | new_uid = zfs_fuid_create(zfsvfs, | |
2583 | (uint64_t)vap->va_uid, cr, ZFS_OWNER, &fuidp); | |
2584 | if (new_uid != zp->z_uid && | |
2585 | zfs_id_overquota(zfsvfs, DMU_USERUSED_OBJECT, | |
2586 | new_uid)) { | |
2587 | if (attrzp) | |
2588 | vput(ZTOV(attrzp)); | |
2589 | err = SET_ERROR(EDQUOT); | |
2590 | goto out2; | |
2591 | } | |
2592 | } | |
2593 | ||
2594 | if (mask & AT_GID) { | |
2595 | new_gid = zfs_fuid_create(zfsvfs, (uint64_t)vap->va_gid, | |
2596 | cr, ZFS_GROUP, &fuidp); | |
2597 | if (new_gid != zp->z_gid && | |
2598 | zfs_id_overquota(zfsvfs, DMU_GROUPUSED_OBJECT, | |
2599 | new_gid)) { | |
2600 | if (attrzp) | |
2601 | vput(ZTOV(attrzp)); | |
2602 | err = SET_ERROR(EDQUOT); | |
2603 | goto out2; | |
2604 | } | |
2605 | } | |
2606 | ||
2607 | if (projid != ZFS_INVALID_PROJID && | |
2608 | zfs_id_overquota(zfsvfs, DMU_PROJECTUSED_OBJECT, projid)) { | |
2609 | if (attrzp) | |
2610 | vput(ZTOV(attrzp)); | |
2611 | err = SET_ERROR(EDQUOT); | |
2612 | goto out2; | |
2613 | } | |
2614 | } | |
2615 | tx = dmu_tx_create(os); | |
2616 | ||
2617 | if (mask & AT_MODE) { | |
2618 | uint64_t pmode = zp->z_mode; | |
2619 | uint64_t acl_obj; | |
2620 | new_mode = (pmode & S_IFMT) | (vap->va_mode & ~S_IFMT); | |
2621 | ||
2622 | if (zp->z_zfsvfs->z_acl_mode == ZFS_ACL_RESTRICTED && | |
2623 | !(zp->z_pflags & ZFS_ACL_TRIVIAL)) { | |
2624 | err = SET_ERROR(EPERM); | |
2625 | goto out; | |
2626 | } | |
2627 | ||
2628 | if ((err = zfs_acl_chmod_setattr(zp, &aclp, new_mode))) | |
2629 | goto out; | |
2630 | ||
2631 | if (!zp->z_is_sa && ((acl_obj = zfs_external_acl(zp)) != 0)) { | |
2632 | /* | |
2633 | * Are we upgrading ACL from old V0 format | |
2634 | * to V1 format? | |
2635 | */ | |
2636 | if (zfsvfs->z_version >= ZPL_VERSION_FUID && | |
2637 | zfs_znode_acl_version(zp) == | |
2638 | ZFS_ACL_VERSION_INITIAL) { | |
2639 | dmu_tx_hold_free(tx, acl_obj, 0, | |
2640 | DMU_OBJECT_END); | |
2641 | dmu_tx_hold_write(tx, DMU_NEW_OBJECT, | |
2642 | 0, aclp->z_acl_bytes); | |
2643 | } else { | |
2644 | dmu_tx_hold_write(tx, acl_obj, 0, | |
2645 | aclp->z_acl_bytes); | |
2646 | } | |
2647 | } else if (!zp->z_is_sa && aclp->z_acl_bytes > ZFS_ACE_SPACE) { | |
2648 | dmu_tx_hold_write(tx, DMU_NEW_OBJECT, | |
2649 | 0, aclp->z_acl_bytes); | |
2650 | } | |
2651 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE); | |
2652 | } else { | |
2653 | if (((mask & AT_XVATTR) && | |
2654 | XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) || | |
2655 | (projid != ZFS_INVALID_PROJID && | |
2656 | !(zp->z_pflags & ZFS_PROJID))) | |
2657 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE); | |
2658 | else | |
2659 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); | |
2660 | } | |
2661 | ||
2662 | if (attrzp) { | |
2663 | dmu_tx_hold_sa(tx, attrzp->z_sa_hdl, B_FALSE); | |
2664 | } | |
2665 | ||
2666 | fuid_dirtied = zfsvfs->z_fuid_dirty; | |
2667 | if (fuid_dirtied) | |
2668 | zfs_fuid_txhold(zfsvfs, tx); | |
2669 | ||
2670 | zfs_sa_upgrade_txholds(tx, zp); | |
2671 | ||
2672 | err = dmu_tx_assign(tx, TXG_WAIT); | |
2673 | if (err) | |
2674 | goto out; | |
2675 | ||
2676 | count = 0; | |
2677 | /* | |
2678 | * Set each attribute requested. | |
2679 | * We group settings according to the locks they need to acquire. | |
2680 | * | |
2681 | * Note: you cannot set ctime directly, although it will be | |
2682 | * updated as a side-effect of calling this function. | |
2683 | */ | |
2684 | ||
2685 | if (projid != ZFS_INVALID_PROJID && !(zp->z_pflags & ZFS_PROJID)) { | |
2686 | /* | |
2687 | * For the existed object that is upgraded from old system, | |
2688 | * its on-disk layout has no slot for the project ID attribute. | |
2689 | * But quota accounting logic needs to access related slots by | |
2690 | * offset directly. So we need to adjust old objects' layout | |
2691 | * to make the project ID to some unified and fixed offset. | |
2692 | */ | |
2693 | if (attrzp) | |
2694 | err = sa_add_projid(attrzp->z_sa_hdl, tx, projid); | |
2695 | if (err == 0) | |
2696 | err = sa_add_projid(zp->z_sa_hdl, tx, projid); | |
2697 | ||
2698 | if (unlikely(err == EEXIST)) | |
2699 | err = 0; | |
2700 | else if (err != 0) | |
2701 | goto out; | |
2702 | else | |
2703 | projid = ZFS_INVALID_PROJID; | |
2704 | } | |
2705 | ||
2706 | if (mask & (AT_UID|AT_GID|AT_MODE)) | |
2707 | mutex_enter(&zp->z_acl_lock); | |
2708 | ||
2709 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, | |
2710 | &zp->z_pflags, sizeof (zp->z_pflags)); | |
2711 | ||
2712 | if (attrzp) { | |
2713 | if (mask & (AT_UID|AT_GID|AT_MODE)) | |
2714 | mutex_enter(&attrzp->z_acl_lock); | |
2715 | SA_ADD_BULK_ATTR(xattr_bulk, xattr_count, | |
2716 | SA_ZPL_FLAGS(zfsvfs), NULL, &attrzp->z_pflags, | |
2717 | sizeof (attrzp->z_pflags)); | |
2718 | if (projid != ZFS_INVALID_PROJID) { | |
2719 | attrzp->z_projid = projid; | |
2720 | SA_ADD_BULK_ATTR(xattr_bulk, xattr_count, | |
2721 | SA_ZPL_PROJID(zfsvfs), NULL, &attrzp->z_projid, | |
2722 | sizeof (attrzp->z_projid)); | |
2723 | } | |
2724 | } | |
2725 | ||
2726 | if (mask & (AT_UID|AT_GID)) { | |
2727 | ||
2728 | if (mask & AT_UID) { | |
2729 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL, | |
2730 | &new_uid, sizeof (new_uid)); | |
2731 | zp->z_uid = new_uid; | |
2732 | if (attrzp) { | |
2733 | SA_ADD_BULK_ATTR(xattr_bulk, xattr_count, | |
2734 | SA_ZPL_UID(zfsvfs), NULL, &new_uid, | |
2735 | sizeof (new_uid)); | |
2736 | attrzp->z_uid = new_uid; | |
2737 | } | |
2738 | } | |
2739 | ||
2740 | if (mask & AT_GID) { | |
2741 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs), | |
2742 | NULL, &new_gid, sizeof (new_gid)); | |
2743 | zp->z_gid = new_gid; | |
2744 | if (attrzp) { | |
2745 | SA_ADD_BULK_ATTR(xattr_bulk, xattr_count, | |
2746 | SA_ZPL_GID(zfsvfs), NULL, &new_gid, | |
2747 | sizeof (new_gid)); | |
2748 | attrzp->z_gid = new_gid; | |
2749 | } | |
2750 | } | |
2751 | if (!(mask & AT_MODE)) { | |
2752 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), | |
2753 | NULL, &new_mode, sizeof (new_mode)); | |
2754 | new_mode = zp->z_mode; | |
2755 | } | |
2756 | err = zfs_acl_chown_setattr(zp); | |
e4efb709 | 2757 | ASSERT0(err); |
9f0a21e6 | 2758 | if (attrzp) { |
5ad86e97 | 2759 | vn_seqc_write_begin(ZTOV(attrzp)); |
9f0a21e6 | 2760 | err = zfs_acl_chown_setattr(attrzp); |
5ad86e97 | 2761 | vn_seqc_write_end(ZTOV(attrzp)); |
e4efb709 | 2762 | ASSERT0(err); |
9f0a21e6 MM |
2763 | } |
2764 | } | |
2765 | ||
2766 | if (mask & AT_MODE) { | |
2767 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL, | |
2768 | &new_mode, sizeof (new_mode)); | |
2769 | zp->z_mode = new_mode; | |
e4efb709 | 2770 | ASSERT3P(aclp, !=, NULL); |
9f0a21e6 MM |
2771 | err = zfs_aclset_common(zp, aclp, cr, tx); |
2772 | ASSERT0(err); | |
2773 | if (zp->z_acl_cached) | |
2774 | zfs_acl_free(zp->z_acl_cached); | |
2775 | zp->z_acl_cached = aclp; | |
2776 | aclp = NULL; | |
2777 | } | |
2778 | ||
2779 | ||
2780 | if (mask & AT_ATIME) { | |
2781 | ZFS_TIME_ENCODE(&vap->va_atime, zp->z_atime); | |
2782 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL, | |
2783 | &zp->z_atime, sizeof (zp->z_atime)); | |
2784 | } | |
2785 | ||
2786 | if (mask & AT_MTIME) { | |
2787 | ZFS_TIME_ENCODE(&vap->va_mtime, mtime); | |
2788 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, | |
2789 | mtime, sizeof (mtime)); | |
2790 | } | |
2791 | ||
2792 | if (projid != ZFS_INVALID_PROJID) { | |
2793 | zp->z_projid = projid; | |
2794 | SA_ADD_BULK_ATTR(bulk, count, | |
2795 | SA_ZPL_PROJID(zfsvfs), NULL, &zp->z_projid, | |
2796 | sizeof (zp->z_projid)); | |
2797 | } | |
2798 | ||
2799 | /* XXX - shouldn't this be done *before* the ATIME/MTIME checks? */ | |
2800 | if (mask & AT_SIZE && !(mask & AT_MTIME)) { | |
2801 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), | |
2802 | NULL, mtime, sizeof (mtime)); | |
2803 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, | |
2804 | &ctime, sizeof (ctime)); | |
2805 | zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime); | |
2806 | } else if (mask != 0) { | |
2807 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, | |
2808 | &ctime, sizeof (ctime)); | |
2809 | zfs_tstamp_update_setup(zp, STATE_CHANGED, mtime, ctime); | |
2810 | if (attrzp) { | |
2811 | SA_ADD_BULK_ATTR(xattr_bulk, xattr_count, | |
2812 | SA_ZPL_CTIME(zfsvfs), NULL, | |
2813 | &ctime, sizeof (ctime)); | |
2814 | zfs_tstamp_update_setup(attrzp, STATE_CHANGED, | |
2815 | mtime, ctime); | |
2816 | } | |
2817 | } | |
2818 | ||
2819 | /* | |
2820 | * Do this after setting timestamps to prevent timestamp | |
2821 | * update from toggling bit | |
2822 | */ | |
2823 | ||
2824 | if (xoap && (mask & AT_XVATTR)) { | |
2825 | ||
2826 | if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) | |
2827 | xoap->xoa_createtime = vap->va_birthtime; | |
2828 | /* | |
2829 | * restore trimmed off masks | |
2830 | * so that return masks can be set for caller. | |
2831 | */ | |
2832 | ||
2833 | if (XVA_ISSET_REQ(&tmpxvattr, XAT_APPENDONLY)) { | |
2834 | XVA_SET_REQ(xvap, XAT_APPENDONLY); | |
2835 | } | |
2836 | if (XVA_ISSET_REQ(&tmpxvattr, XAT_NOUNLINK)) { | |
2837 | XVA_SET_REQ(xvap, XAT_NOUNLINK); | |
2838 | } | |
2839 | if (XVA_ISSET_REQ(&tmpxvattr, XAT_IMMUTABLE)) { | |
2840 | XVA_SET_REQ(xvap, XAT_IMMUTABLE); | |
2841 | } | |
2842 | if (XVA_ISSET_REQ(&tmpxvattr, XAT_NODUMP)) { | |
2843 | XVA_SET_REQ(xvap, XAT_NODUMP); | |
2844 | } | |
2845 | if (XVA_ISSET_REQ(&tmpxvattr, XAT_AV_MODIFIED)) { | |
2846 | XVA_SET_REQ(xvap, XAT_AV_MODIFIED); | |
2847 | } | |
2848 | if (XVA_ISSET_REQ(&tmpxvattr, XAT_AV_QUARANTINED)) { | |
2849 | XVA_SET_REQ(xvap, XAT_AV_QUARANTINED); | |
2850 | } | |
2851 | if (XVA_ISSET_REQ(&tmpxvattr, XAT_PROJINHERIT)) { | |
2852 | XVA_SET_REQ(xvap, XAT_PROJINHERIT); | |
2853 | } | |
2854 | ||
2855 | if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) | |
e4efb709 | 2856 | ASSERT3S(vp->v_type, ==, VREG); |
9f0a21e6 MM |
2857 | |
2858 | zfs_xvattr_set(zp, xvap, tx); | |
2859 | } | |
2860 | ||
2861 | if (fuid_dirtied) | |
2862 | zfs_fuid_sync(zfsvfs, tx); | |
2863 | ||
2864 | if (mask != 0) | |
2865 | zfs_log_setattr(zilog, tx, TX_SETATTR, zp, vap, mask, fuidp); | |
2866 | ||
2867 | if (mask & (AT_UID|AT_GID|AT_MODE)) | |
2868 | mutex_exit(&zp->z_acl_lock); | |
2869 | ||
2870 | if (attrzp) { | |
2871 | if (mask & (AT_UID|AT_GID|AT_MODE)) | |
2872 | mutex_exit(&attrzp->z_acl_lock); | |
2873 | } | |
2874 | out: | |
2875 | if (err == 0 && attrzp) { | |
2876 | err2 = sa_bulk_update(attrzp->z_sa_hdl, xattr_bulk, | |
2877 | xattr_count, tx); | |
e4efb709 | 2878 | ASSERT0(err2); |
9f0a21e6 MM |
2879 | } |
2880 | ||
2881 | if (attrzp) | |
2882 | vput(ZTOV(attrzp)); | |
2883 | ||
2884 | if (aclp) | |
2885 | zfs_acl_free(aclp); | |
2886 | ||
2887 | if (fuidp) { | |
2888 | zfs_fuid_info_free(fuidp); | |
2889 | fuidp = NULL; | |
2890 | } | |
2891 | ||
2892 | if (err) { | |
2893 | dmu_tx_abort(tx); | |
2894 | } else { | |
2895 | err2 = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); | |
2896 | dmu_tx_commit(tx); | |
2897 | } | |
2898 | ||
2899 | out2: | |
2900 | if (os->os_sync == ZFS_SYNC_ALWAYS) | |
2901 | zil_commit(zilog, 0); | |
2902 | ||
768eaced | 2903 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
2904 | return (err); |
2905 | } | |
2906 | ||
ded851b2 MJ |
2907 | /* |
2908 | * Look up the directory entries corresponding to the source and target | |
2909 | * directory/name pairs. | |
2910 | */ | |
2911 | static int | |
2912 | zfs_rename_relock_lookup(znode_t *sdzp, const struct componentname *scnp, | |
2913 | znode_t **szpp, znode_t *tdzp, const struct componentname *tcnp, | |
2914 | znode_t **tzpp) | |
2915 | { | |
2916 | zfsvfs_t *zfsvfs; | |
2917 | znode_t *szp, *tzp; | |
2918 | int error; | |
2919 | ||
2920 | /* | |
2921 | * Before using sdzp and tdzp we must ensure that they are live. | |
2922 | * As a porting legacy from illumos we have two things to worry | |
2923 | * about. One is typical for FreeBSD and it is that the vnode is | |
2924 | * not reclaimed (doomed). The other is that the znode is live. | |
2925 | * The current code can invalidate the znode without acquiring the | |
2926 | * corresponding vnode lock if the object represented by the znode | |
2927 | * and vnode is no longer valid after a rollback or receive operation. | |
768eaced | 2928 | * z_teardown_lock hidden behind zfs_enter and zfs_exit is the lock |
ded851b2 MJ |
2929 | * that protects the znodes from the invalidation. |
2930 | */ | |
2931 | zfsvfs = sdzp->z_zfsvfs; | |
2932 | ASSERT3P(zfsvfs, ==, tdzp->z_zfsvfs); | |
768eaced CC |
2933 | if ((error = zfs_enter_verify_zp(zfsvfs, sdzp, FTAG)) != 0) |
2934 | return (error); | |
2935 | if ((error = zfs_verify_zp(tdzp)) != 0) { | |
2936 | zfs_exit(zfsvfs, FTAG); | |
2937 | return (error); | |
2938 | } | |
ded851b2 MJ |
2939 | |
2940 | /* | |
2941 | * Re-resolve svp to be certain it still exists and fetch the | |
2942 | * correct vnode. | |
2943 | */ | |
2944 | error = zfs_dirent_lookup(sdzp, scnp->cn_nameptr, &szp, ZEXISTS); | |
2945 | if (error != 0) { | |
2946 | /* Source entry invalid or not there. */ | |
2947 | if ((scnp->cn_flags & ISDOTDOT) != 0 || | |
2948 | (scnp->cn_namelen == 1 && scnp->cn_nameptr[0] == '.')) | |
2949 | error = SET_ERROR(EINVAL); | |
2950 | goto out; | |
2951 | } | |
2952 | *szpp = szp; | |
2953 | ||
2954 | /* | |
2955 | * Re-resolve tvp, if it disappeared we just carry on. | |
2956 | */ | |
2957 | error = zfs_dirent_lookup(tdzp, tcnp->cn_nameptr, &tzp, 0); | |
2958 | if (error != 0) { | |
2959 | vrele(ZTOV(szp)); | |
2960 | if ((tcnp->cn_flags & ISDOTDOT) != 0) | |
2961 | error = SET_ERROR(EINVAL); | |
2962 | goto out; | |
2963 | } | |
2964 | *tzpp = tzp; | |
2965 | out: | |
768eaced | 2966 | zfs_exit(zfsvfs, FTAG); |
ded851b2 MJ |
2967 | return (error); |
2968 | } | |
2969 | ||
9f0a21e6 MM |
2970 | /* |
2971 | * We acquire all but fdvp locks using non-blocking acquisitions. If we | |
2972 | * fail to acquire any lock in the path we will drop all held locks, | |
2973 | * acquire the new lock in a blocking fashion, and then release it and | |
2974 | * restart the rename. This acquire/release step ensures that we do not | |
2975 | * spin on a lock waiting for release. On error release all vnode locks | |
2976 | * and decrement references the way tmpfs_rename() would do. | |
2977 | */ | |
2978 | static int | |
2979 | zfs_rename_relock(struct vnode *sdvp, struct vnode **svpp, | |
2980 | struct vnode *tdvp, struct vnode **tvpp, | |
2981 | const struct componentname *scnp, const struct componentname *tcnp) | |
2982 | { | |
9f0a21e6 MM |
2983 | struct vnode *nvp, *svp, *tvp; |
2984 | znode_t *sdzp, *tdzp, *szp, *tzp; | |
ded851b2 | 2985 | int error; |
9f0a21e6 MM |
2986 | |
2987 | VOP_UNLOCK1(tdvp); | |
2988 | if (*tvpp != NULL && *tvpp != tdvp) | |
2989 | VOP_UNLOCK1(*tvpp); | |
2990 | ||
2991 | relock: | |
2992 | error = vn_lock(sdvp, LK_EXCLUSIVE); | |
2993 | if (error) | |
2994 | goto out; | |
9f0a21e6 MM |
2995 | error = vn_lock(tdvp, LK_EXCLUSIVE | LK_NOWAIT); |
2996 | if (error != 0) { | |
2997 | VOP_UNLOCK1(sdvp); | |
2998 | if (error != EBUSY) | |
2999 | goto out; | |
3000 | error = vn_lock(tdvp, LK_EXCLUSIVE); | |
3001 | if (error) | |
3002 | goto out; | |
3003 | VOP_UNLOCK1(tdvp); | |
3004 | goto relock; | |
3005 | } | |
3006 | tdzp = VTOZ(tdvp); | |
ded851b2 | 3007 | sdzp = VTOZ(sdvp); |
9f0a21e6 | 3008 | |
ded851b2 | 3009 | error = zfs_rename_relock_lookup(sdzp, scnp, &szp, tdzp, tcnp, &tzp); |
9f0a21e6 | 3010 | if (error != 0) { |
9f0a21e6 MM |
3011 | VOP_UNLOCK1(sdvp); |
3012 | VOP_UNLOCK1(tdvp); | |
9f0a21e6 MM |
3013 | goto out; |
3014 | } | |
3015 | svp = ZTOV(szp); | |
ded851b2 | 3016 | tvp = tzp != NULL ? ZTOV(tzp) : NULL; |
9f0a21e6 MM |
3017 | |
3018 | /* | |
3019 | * Now try acquire locks on svp and tvp. | |
3020 | */ | |
3021 | nvp = svp; | |
3022 | error = vn_lock(nvp, LK_EXCLUSIVE | LK_NOWAIT); | |
3023 | if (error != 0) { | |
3024 | VOP_UNLOCK1(sdvp); | |
3025 | VOP_UNLOCK1(tdvp); | |
3026 | if (tvp != NULL) | |
3027 | vrele(tvp); | |
3028 | if (error != EBUSY) { | |
3029 | vrele(nvp); | |
3030 | goto out; | |
3031 | } | |
3032 | error = vn_lock(nvp, LK_EXCLUSIVE); | |
3033 | if (error != 0) { | |
3034 | vrele(nvp); | |
3035 | goto out; | |
3036 | } | |
3037 | VOP_UNLOCK1(nvp); | |
3038 | /* | |
3039 | * Concurrent rename race. | |
3040 | * XXX ? | |
3041 | */ | |
3042 | if (nvp == tdvp) { | |
3043 | vrele(nvp); | |
3044 | error = SET_ERROR(EINVAL); | |
3045 | goto out; | |
3046 | } | |
3047 | vrele(*svpp); | |
3048 | *svpp = nvp; | |
3049 | goto relock; | |
3050 | } | |
3051 | vrele(*svpp); | |
3052 | *svpp = nvp; | |
3053 | ||
3054 | if (*tvpp != NULL) | |
3055 | vrele(*tvpp); | |
3056 | *tvpp = NULL; | |
3057 | if (tvp != NULL) { | |
3058 | nvp = tvp; | |
3059 | error = vn_lock(nvp, LK_EXCLUSIVE | LK_NOWAIT); | |
3060 | if (error != 0) { | |
3061 | VOP_UNLOCK1(sdvp); | |
3062 | VOP_UNLOCK1(tdvp); | |
3063 | VOP_UNLOCK1(*svpp); | |
3064 | if (error != EBUSY) { | |
3065 | vrele(nvp); | |
3066 | goto out; | |
3067 | } | |
3068 | error = vn_lock(nvp, LK_EXCLUSIVE); | |
3069 | if (error != 0) { | |
3070 | vrele(nvp); | |
3071 | goto out; | |
3072 | } | |
3073 | vput(nvp); | |
3074 | goto relock; | |
3075 | } | |
3076 | *tvpp = nvp; | |
3077 | } | |
3078 | ||
3079 | return (0); | |
3080 | ||
3081 | out: | |
3082 | return (error); | |
3083 | } | |
3084 | ||
3085 | /* | |
3086 | * Note that we must use VRELE_ASYNC in this function as it walks | |
3087 | * up the directory tree and vrele may need to acquire an exclusive | |
3088 | * lock if a last reference to a vnode is dropped. | |
3089 | */ | |
3090 | static int | |
3091 | zfs_rename_check(znode_t *szp, znode_t *sdzp, znode_t *tdzp) | |
3092 | { | |
3093 | zfsvfs_t *zfsvfs; | |
3094 | znode_t *zp, *zp1; | |
3095 | uint64_t parent; | |
3096 | int error; | |
3097 | ||
3098 | zfsvfs = tdzp->z_zfsvfs; | |
3099 | if (tdzp == szp) | |
3100 | return (SET_ERROR(EINVAL)); | |
3101 | if (tdzp == sdzp) | |
3102 | return (0); | |
3103 | if (tdzp->z_id == zfsvfs->z_root) | |
3104 | return (0); | |
3105 | zp = tdzp; | |
3106 | for (;;) { | |
3107 | ASSERT(!zp->z_unlinked); | |
3108 | if ((error = sa_lookup(zp->z_sa_hdl, | |
3109 | SA_ZPL_PARENT(zfsvfs), &parent, sizeof (parent))) != 0) | |
3110 | break; | |
3111 | ||
3112 | if (parent == szp->z_id) { | |
3113 | error = SET_ERROR(EINVAL); | |
3114 | break; | |
3115 | } | |
3116 | if (parent == zfsvfs->z_root) | |
3117 | break; | |
3118 | if (parent == sdzp->z_id) | |
3119 | break; | |
3120 | ||
3121 | error = zfs_zget(zfsvfs, parent, &zp1); | |
3122 | if (error != 0) | |
3123 | break; | |
3124 | ||
3125 | if (zp != tdzp) | |
3126 | VN_RELE_ASYNC(ZTOV(zp), | |
3127 | dsl_pool_zrele_taskq( | |
3128 | dmu_objset_pool(zfsvfs->z_os))); | |
3129 | zp = zp1; | |
3130 | } | |
3131 | ||
3132 | if (error == ENOTDIR) | |
3133 | panic("checkpath: .. not a directory\n"); | |
3134 | if (zp != tdzp) | |
3135 | VN_RELE_ASYNC(ZTOV(zp), | |
3136 | dsl_pool_zrele_taskq(dmu_objset_pool(zfsvfs->z_os))); | |
3137 | return (error); | |
3138 | } | |
3139 | ||
115216cc | 3140 | #if __FreeBSD_version < 1300124 |
2ce14cdf | 3141 | static void |
115216cc | 3142 | cache_vop_rename(struct vnode *fdvp, struct vnode *fvp, struct vnode *tdvp, |
2ce14cdf MG |
3143 | struct vnode *tvp, struct componentname *fcnp, struct componentname *tcnp) |
3144 | { | |
3145 | ||
3146 | cache_purge(fvp); | |
3147 | if (tvp != NULL) | |
3148 | cache_purge(tvp); | |
3149 | cache_purge_negative(tdvp); | |
3150 | } | |
3151 | #endif | |
3152 | ||
ded851b2 MJ |
3153 | static int |
3154 | zfs_do_rename_impl(vnode_t *sdvp, vnode_t **svpp, struct componentname *scnp, | |
3155 | vnode_t *tdvp, vnode_t **tvpp, struct componentname *tcnp, | |
3156 | cred_t *cr); | |
3157 | ||
9f0a21e6 MM |
3158 | /* |
3159 | * Move an entry from the provided source directory to the target | |
3160 | * directory. Change the entry name as indicated. | |
3161 | * | |
3162 | * IN: sdvp - Source directory containing the "old entry". | |
ded851b2 | 3163 | * scnp - Old entry name. |
9f0a21e6 | 3164 | * tdvp - Target directory to contain the "new entry". |
ded851b2 | 3165 | * tcnp - New entry name. |
9f0a21e6 | 3166 | * cr - credentials of caller. |
ded851b2 MJ |
3167 | * INOUT: svpp - Source file |
3168 | * tvpp - Target file, may point to NULL initially | |
9f0a21e6 MM |
3169 | * |
3170 | * RETURN: 0 on success, error code on failure. | |
3171 | * | |
3172 | * Timestamps: | |
3173 | * sdvp,tdvp - ctime|mtime updated | |
3174 | */ | |
9f0a21e6 | 3175 | static int |
ded851b2 | 3176 | zfs_do_rename(vnode_t *sdvp, vnode_t **svpp, struct componentname *scnp, |
9f0a21e6 | 3177 | vnode_t *tdvp, vnode_t **tvpp, struct componentname *tcnp, |
ded851b2 | 3178 | cred_t *cr) |
9f0a21e6 | 3179 | { |
ded851b2 MJ |
3180 | int error; |
3181 | ||
3182 | ASSERT_VOP_ELOCKED(tdvp, __func__); | |
3183 | if (*tvpp != NULL) | |
3184 | ASSERT_VOP_ELOCKED(*tvpp, __func__); | |
9f0a21e6 MM |
3185 | |
3186 | /* Reject renames across filesystems. */ | |
3187 | if ((*svpp)->v_mount != tdvp->v_mount || | |
3188 | ((*tvpp) != NULL && (*svpp)->v_mount != (*tvpp)->v_mount)) { | |
3189 | error = SET_ERROR(EXDEV); | |
3190 | goto out; | |
3191 | } | |
3192 | ||
3193 | if (zfsctl_is_node(tdvp)) { | |
3194 | error = SET_ERROR(EXDEV); | |
3195 | goto out; | |
3196 | } | |
3197 | ||
3198 | /* | |
3199 | * Lock all four vnodes to ensure safety and semantics of renaming. | |
3200 | */ | |
3201 | error = zfs_rename_relock(sdvp, svpp, tdvp, tvpp, scnp, tcnp); | |
3202 | if (error != 0) { | |
3203 | /* no vnodes are locked in the case of error here */ | |
3204 | return (error); | |
3205 | } | |
3206 | ||
ded851b2 MJ |
3207 | error = zfs_do_rename_impl(sdvp, svpp, scnp, tdvp, tvpp, tcnp, cr); |
3208 | VOP_UNLOCK1(sdvp); | |
3209 | VOP_UNLOCK1(*svpp); | |
3210 | out: | |
3211 | if (*tvpp != NULL) | |
3212 | VOP_UNLOCK1(*tvpp); | |
3213 | if (tdvp != *tvpp) | |
3214 | VOP_UNLOCK1(tdvp); | |
3215 | ||
3216 | return (error); | |
3217 | } | |
3218 | ||
3219 | static int | |
3220 | zfs_do_rename_impl(vnode_t *sdvp, vnode_t **svpp, struct componentname *scnp, | |
3221 | vnode_t *tdvp, vnode_t **tvpp, struct componentname *tcnp, | |
3222 | cred_t *cr) | |
3223 | { | |
3224 | dmu_tx_t *tx; | |
3225 | zfsvfs_t *zfsvfs; | |
3226 | zilog_t *zilog; | |
3227 | znode_t *tdzp, *sdzp, *tzp, *szp; | |
3228 | const char *snm = scnp->cn_nameptr; | |
3229 | const char *tnm = tcnp->cn_nameptr; | |
3230 | int error; | |
3231 | ||
9f0a21e6 MM |
3232 | tdzp = VTOZ(tdvp); |
3233 | sdzp = VTOZ(sdvp); | |
3234 | zfsvfs = tdzp->z_zfsvfs; | |
9f0a21e6 | 3235 | |
768eaced CC |
3236 | if ((error = zfs_enter_verify_zp(zfsvfs, tdzp, FTAG)) != 0) |
3237 | return (error); | |
3238 | if ((error = zfs_verify_zp(sdzp)) != 0) { | |
3239 | zfs_exit(zfsvfs, FTAG); | |
3240 | return (error); | |
3241 | } | |
ded851b2 | 3242 | zilog = zfsvfs->z_log; |
9f0a21e6 MM |
3243 | |
3244 | if (zfsvfs->z_utf8 && u8_validate(tnm, | |
3245 | strlen(tnm), NULL, U8_VALIDATE_ENTIRE, &error) < 0) { | |
3246 | error = SET_ERROR(EILSEQ); | |
ded851b2 | 3247 | goto out; |
9f0a21e6 MM |
3248 | } |
3249 | ||
3250 | /* If source and target are the same file, there is nothing to do. */ | |
3251 | if ((*svpp) == (*tvpp)) { | |
3252 | error = 0; | |
ded851b2 | 3253 | goto out; |
9f0a21e6 MM |
3254 | } |
3255 | ||
3256 | if (((*svpp)->v_type == VDIR && (*svpp)->v_mountedhere != NULL) || | |
3257 | ((*tvpp) != NULL && (*tvpp)->v_type == VDIR && | |
3258 | (*tvpp)->v_mountedhere != NULL)) { | |
3259 | error = SET_ERROR(EXDEV); | |
ded851b2 | 3260 | goto out; |
9f0a21e6 MM |
3261 | } |
3262 | ||
3263 | szp = VTOZ(*svpp); | |
768eaced CC |
3264 | if ((error = zfs_verify_zp(szp)) != 0) { |
3265 | zfs_exit(zfsvfs, FTAG); | |
3266 | return (error); | |
3267 | } | |
9f0a21e6 | 3268 | tzp = *tvpp == NULL ? NULL : VTOZ(*tvpp); |
768eaced CC |
3269 | if (tzp != NULL) { |
3270 | if ((error = zfs_verify_zp(tzp)) != 0) { | |
3271 | zfs_exit(zfsvfs, FTAG); | |
3272 | return (error); | |
3273 | } | |
3274 | } | |
9f0a21e6 MM |
3275 | |
3276 | /* | |
3277 | * This is to prevent the creation of links into attribute space | |
3278 | * by renaming a linked file into/outof an attribute directory. | |
3279 | * See the comment in zfs_link() for why this is considered bad. | |
3280 | */ | |
3281 | if ((tdzp->z_pflags & ZFS_XATTR) != (sdzp->z_pflags & ZFS_XATTR)) { | |
3282 | error = SET_ERROR(EINVAL); | |
ded851b2 | 3283 | goto out; |
9f0a21e6 MM |
3284 | } |
3285 | ||
3286 | /* | |
3287 | * If we are using project inheritance, means if the directory has | |
3288 | * ZFS_PROJINHERIT set, then its descendant directories will inherit | |
3289 | * not only the project ID, but also the ZFS_PROJINHERIT flag. Under | |
3290 | * such case, we only allow renames into our tree when the project | |
3291 | * IDs are the same. | |
3292 | */ | |
3293 | if (tdzp->z_pflags & ZFS_PROJINHERIT && | |
3294 | tdzp->z_projid != szp->z_projid) { | |
3295 | error = SET_ERROR(EXDEV); | |
ded851b2 | 3296 | goto out; |
9f0a21e6 MM |
3297 | } |
3298 | ||
3299 | /* | |
3300 | * Must have write access at the source to remove the old entry | |
3301 | * and write access at the target to create the new entry. | |
3302 | * Note that if target and source are the same, this can be | |
3303 | * done in a single check. | |
3304 | */ | |
2a068a13 | 3305 | if ((error = zfs_zaccess_rename(sdzp, szp, tdzp, tzp, cr, NULL))) |
ded851b2 | 3306 | goto out; |
9f0a21e6 MM |
3307 | |
3308 | if ((*svpp)->v_type == VDIR) { | |
3309 | /* | |
3310 | * Avoid ".", "..", and aliases of "." for obvious reasons. | |
3311 | */ | |
3312 | if ((scnp->cn_namelen == 1 && scnp->cn_nameptr[0] == '.') || | |
3313 | sdzp == szp || | |
3314 | (scnp->cn_flags | tcnp->cn_flags) & ISDOTDOT) { | |
3315 | error = EINVAL; | |
ded851b2 | 3316 | goto out; |
9f0a21e6 MM |
3317 | } |
3318 | ||
3319 | /* | |
3320 | * Check to make sure rename is valid. | |
3321 | * Can't do a move like this: /usr/a/b to /usr/a/b/c/d | |
3322 | */ | |
3323 | if ((error = zfs_rename_check(szp, sdzp, tdzp))) | |
ded851b2 | 3324 | goto out; |
9f0a21e6 MM |
3325 | } |
3326 | ||
3327 | /* | |
3328 | * Does target exist? | |
3329 | */ | |
3330 | if (tzp) { | |
3331 | /* | |
3332 | * Source and target must be the same type. | |
3333 | */ | |
3334 | if ((*svpp)->v_type == VDIR) { | |
3335 | if ((*tvpp)->v_type != VDIR) { | |
3336 | error = SET_ERROR(ENOTDIR); | |
ded851b2 | 3337 | goto out; |
9f0a21e6 MM |
3338 | } else { |
3339 | cache_purge(tdvp); | |
3340 | if (sdvp != tdvp) | |
3341 | cache_purge(sdvp); | |
3342 | } | |
3343 | } else { | |
3344 | if ((*tvpp)->v_type == VDIR) { | |
3345 | error = SET_ERROR(EISDIR); | |
ded851b2 | 3346 | goto out; |
9f0a21e6 MM |
3347 | } |
3348 | } | |
3349 | } | |
3350 | ||
1b376d17 MM |
3351 | vn_seqc_write_begin(*svpp); |
3352 | vn_seqc_write_begin(sdvp); | |
3353 | if (*tvpp != NULL) | |
3354 | vn_seqc_write_begin(*tvpp); | |
3355 | if (tdvp != *tvpp) | |
3356 | vn_seqc_write_begin(tdvp); | |
ded851b2 | 3357 | |
9f0a21e6 MM |
3358 | vnevent_rename_src(*svpp, sdvp, scnp->cn_nameptr, ct); |
3359 | if (tzp) | |
3360 | vnevent_rename_dest(*tvpp, tdvp, tnm, ct); | |
3361 | ||
3362 | /* | |
3363 | * notify the target directory if it is not the same | |
3364 | * as source directory. | |
3365 | */ | |
3366 | if (tdvp != sdvp) { | |
3367 | vnevent_rename_dest_dir(tdvp, ct); | |
3368 | } | |
3369 | ||
3370 | tx = dmu_tx_create(zfsvfs->z_os); | |
3371 | dmu_tx_hold_sa(tx, szp->z_sa_hdl, B_FALSE); | |
3372 | dmu_tx_hold_sa(tx, sdzp->z_sa_hdl, B_FALSE); | |
3373 | dmu_tx_hold_zap(tx, sdzp->z_id, FALSE, snm); | |
3374 | dmu_tx_hold_zap(tx, tdzp->z_id, TRUE, tnm); | |
3375 | if (sdzp != tdzp) { | |
3376 | dmu_tx_hold_sa(tx, tdzp->z_sa_hdl, B_FALSE); | |
3377 | zfs_sa_upgrade_txholds(tx, tdzp); | |
3378 | } | |
3379 | if (tzp) { | |
3380 | dmu_tx_hold_sa(tx, tzp->z_sa_hdl, B_FALSE); | |
3381 | zfs_sa_upgrade_txholds(tx, tzp); | |
3382 | } | |
3383 | ||
3384 | zfs_sa_upgrade_txholds(tx, szp); | |
3385 | dmu_tx_hold_zap(tx, zfsvfs->z_unlinkedobj, FALSE, NULL); | |
3386 | error = dmu_tx_assign(tx, TXG_WAIT); | |
3387 | if (error) { | |
3388 | dmu_tx_abort(tx); | |
ded851b2 | 3389 | goto out_seq; |
9f0a21e6 MM |
3390 | } |
3391 | ||
9f0a21e6 MM |
3392 | if (tzp) /* Attempt to remove the existing target */ |
3393 | error = zfs_link_destroy(tdzp, tnm, tzp, tx, 0, NULL); | |
3394 | ||
3395 | if (error == 0) { | |
3396 | error = zfs_link_create(tdzp, tnm, szp, tx, ZRENAMING); | |
3397 | if (error == 0) { | |
3398 | szp->z_pflags |= ZFS_AV_MODIFIED; | |
3399 | ||
3400 | error = sa_update(szp->z_sa_hdl, SA_ZPL_FLAGS(zfsvfs), | |
3401 | (void *)&szp->z_pflags, sizeof (uint64_t), tx); | |
3402 | ASSERT0(error); | |
3403 | ||
3404 | error = zfs_link_destroy(sdzp, snm, szp, tx, ZRENAMING, | |
3405 | NULL); | |
3406 | if (error == 0) { | |
3407 | zfs_log_rename(zilog, tx, TX_RENAME, sdzp, | |
3408 | snm, tdzp, tnm, szp); | |
9f0a21e6 MM |
3409 | } else { |
3410 | /* | |
3411 | * At this point, we have successfully created | |
3412 | * the target name, but have failed to remove | |
3413 | * the source name. Since the create was done | |
3414 | * with the ZRENAMING flag, there are | |
3415 | * complications; for one, the link count is | |
3416 | * wrong. The easiest way to deal with this | |
3417 | * is to remove the newly created target, and | |
3418 | * return the original error. This must | |
3419 | * succeed; fortunately, it is very unlikely to | |
3420 | * fail, since we just created it. | |
3421 | */ | |
e4efb709 RM |
3422 | VERIFY0(zfs_link_destroy(tdzp, tnm, szp, tx, |
3423 | ZRENAMING, NULL)); | |
9f0a21e6 MM |
3424 | } |
3425 | } | |
3426 | if (error == 0) { | |
115216cc | 3427 | cache_vop_rename(sdvp, *svpp, tdvp, *tvpp, scnp, tcnp); |
9f0a21e6 MM |
3428 | } |
3429 | } | |
3430 | ||
3431 | dmu_tx_commit(tx); | |
3432 | ||
ded851b2 MJ |
3433 | out_seq: |
3434 | vn_seqc_write_end(*svpp); | |
3435 | vn_seqc_write_end(sdvp); | |
3436 | if (*tvpp != NULL) | |
3437 | vn_seqc_write_end(*tvpp); | |
3438 | if (tdvp != *tvpp) | |
3439 | vn_seqc_write_end(tdvp); | |
9f0a21e6 | 3440 | |
ded851b2 | 3441 | out: |
9f0a21e6 MM |
3442 | if (error == 0 && zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS) |
3443 | zil_commit(zilog, 0); | |
768eaced | 3444 | zfs_exit(zfsvfs, FTAG); |
4d1a3ba6 | 3445 | |
9f0a21e6 MM |
3446 | return (error); |
3447 | } | |
3448 | ||
3449 | int | |
4d55ea81 | 3450 | zfs_rename(znode_t *sdzp, const char *sname, znode_t *tdzp, const char *tname, |
d4dc53da | 3451 | cred_t *cr, int flags, uint64_t rflags, vattr_t *wo_vap, zidmap_t *mnt_ns) |
9f0a21e6 MM |
3452 | { |
3453 | struct componentname scn, tcn; | |
3454 | vnode_t *sdvp, *tdvp; | |
3455 | vnode_t *svp, *tvp; | |
3456 | int error; | |
3457 | svp = tvp = NULL; | |
3458 | ||
dbf6108b AS |
3459 | if (rflags != 0 || wo_vap != NULL) |
3460 | return (SET_ERROR(EINVAL)); | |
3461 | ||
9f0a21e6 MM |
3462 | sdvp = ZTOV(sdzp); |
3463 | tdvp = ZTOV(tdzp); | |
3464 | error = zfs_lookup_internal(sdzp, sname, &svp, &scn, DELETE); | |
3465 | if (sdzp->z_zfsvfs->z_replay == B_FALSE) | |
3466 | VOP_UNLOCK1(sdvp); | |
3467 | if (error != 0) | |
3468 | goto fail; | |
3469 | VOP_UNLOCK1(svp); | |
3470 | ||
3471 | vn_lock(tdvp, LK_EXCLUSIVE | LK_RETRY); | |
3472 | error = zfs_lookup_internal(tdzp, tname, &tvp, &tcn, RENAME); | |
3473 | if (error == EJUSTRETURN) | |
3474 | tvp = NULL; | |
3475 | else if (error != 0) { | |
3476 | VOP_UNLOCK1(tdvp); | |
3477 | goto fail; | |
3478 | } | |
3479 | ||
ded851b2 | 3480 | error = zfs_do_rename(sdvp, &svp, &scn, tdvp, &tvp, &tcn, cr); |
9f0a21e6 MM |
3481 | fail: |
3482 | if (svp != NULL) | |
3483 | vrele(svp); | |
3484 | if (tvp != NULL) | |
3485 | vrele(tvp); | |
3486 | ||
3487 | return (error); | |
3488 | } | |
3489 | ||
3490 | /* | |
3491 | * Insert the indicated symbolic reference entry into the directory. | |
3492 | * | |
3493 | * IN: dvp - Directory to contain new symbolic link. | |
3494 | * link - Name for new symlink entry. | |
3495 | * vap - Attributes of new entry. | |
3496 | * cr - credentials of caller. | |
3497 | * ct - caller context | |
3498 | * flags - case flags | |
2a068a13 | 3499 | * mnt_ns - Unused on FreeBSD |
9f0a21e6 MM |
3500 | * |
3501 | * RETURN: 0 on success, error code on failure. | |
3502 | * | |
3503 | * Timestamps: | |
3504 | * dvp - ctime|mtime updated | |
3505 | */ | |
9f0a21e6 MM |
3506 | int |
3507 | zfs_symlink(znode_t *dzp, const char *name, vattr_t *vap, | |
d4dc53da | 3508 | const char *link, znode_t **zpp, cred_t *cr, int flags, zidmap_t *mnt_ns) |
9f0a21e6 | 3509 | { |
ef70eff1 | 3510 | (void) flags; |
9f0a21e6 MM |
3511 | znode_t *zp; |
3512 | dmu_tx_t *tx; | |
3513 | zfsvfs_t *zfsvfs = dzp->z_zfsvfs; | |
3514 | zilog_t *zilog; | |
3515 | uint64_t len = strlen(link); | |
3516 | int error; | |
3517 | zfs_acl_ids_t acl_ids; | |
3518 | boolean_t fuid_dirtied; | |
3519 | uint64_t txtype = TX_SYMLINK; | |
3520 | ||
e4efb709 | 3521 | ASSERT3S(vap->va_type, ==, VLNK); |
9f0a21e6 | 3522 | |
768eaced CC |
3523 | if ((error = zfs_enter_verify_zp(zfsvfs, dzp, FTAG)) != 0) |
3524 | return (error); | |
9f0a21e6 MM |
3525 | zilog = zfsvfs->z_log; |
3526 | ||
3527 | if (zfsvfs->z_utf8 && u8_validate(name, strlen(name), | |
3528 | NULL, U8_VALIDATE_ENTIRE, &error) < 0) { | |
768eaced | 3529 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3530 | return (SET_ERROR(EILSEQ)); |
3531 | } | |
3532 | ||
3533 | if (len > MAXPATHLEN) { | |
768eaced | 3534 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3535 | return (SET_ERROR(ENAMETOOLONG)); |
3536 | } | |
3537 | ||
3538 | if ((error = zfs_acl_ids_create(dzp, 0, | |
2a068a13 | 3539 | vap, cr, NULL, &acl_ids, NULL)) != 0) { |
768eaced | 3540 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3541 | return (error); |
3542 | } | |
3543 | ||
3544 | /* | |
3545 | * Attempt to lock directory; fail if entry already exists. | |
3546 | */ | |
3547 | error = zfs_dirent_lookup(dzp, name, &zp, ZNEW); | |
3548 | if (error) { | |
3549 | zfs_acl_ids_free(&acl_ids); | |
768eaced | 3550 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3551 | return (error); |
3552 | } | |
3553 | ||
2a068a13 | 3554 | if ((error = zfs_zaccess(dzp, ACE_ADD_FILE, 0, B_FALSE, cr, mnt_ns))) { |
9f0a21e6 | 3555 | zfs_acl_ids_free(&acl_ids); |
768eaced | 3556 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3557 | return (error); |
3558 | } | |
3559 | ||
3560 | if (zfs_acl_ids_overquota(zfsvfs, &acl_ids, | |
3561 | 0 /* projid */)) { | |
3562 | zfs_acl_ids_free(&acl_ids); | |
768eaced | 3563 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3564 | return (SET_ERROR(EDQUOT)); |
3565 | } | |
3566 | ||
3567 | getnewvnode_reserve_(); | |
3568 | tx = dmu_tx_create(zfsvfs->z_os); | |
3569 | fuid_dirtied = zfsvfs->z_fuid_dirty; | |
3570 | dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, MAX(1, len)); | |
3571 | dmu_tx_hold_zap(tx, dzp->z_id, TRUE, name); | |
3572 | dmu_tx_hold_sa_create(tx, acl_ids.z_aclp->z_acl_bytes + | |
3573 | ZFS_SA_BASE_ATTR_SIZE + len); | |
3574 | dmu_tx_hold_sa(tx, dzp->z_sa_hdl, B_FALSE); | |
3575 | if (!zfsvfs->z_use_sa && acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE) { | |
3576 | dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, | |
3577 | acl_ids.z_aclp->z_acl_bytes); | |
3578 | } | |
3579 | if (fuid_dirtied) | |
3580 | zfs_fuid_txhold(zfsvfs, tx); | |
3581 | error = dmu_tx_assign(tx, TXG_WAIT); | |
3582 | if (error) { | |
3583 | zfs_acl_ids_free(&acl_ids); | |
3584 | dmu_tx_abort(tx); | |
3585 | getnewvnode_drop_reserve(); | |
768eaced | 3586 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3587 | return (error); |
3588 | } | |
3589 | ||
3590 | /* | |
3591 | * Create a new object for the symlink. | |
bf169e9f | 3592 | * for version 4 ZPL datasets the symlink will be an SA attribute |
9f0a21e6 MM |
3593 | */ |
3594 | zfs_mknode(dzp, vap, tx, cr, 0, &zp, &acl_ids); | |
3595 | ||
3596 | if (fuid_dirtied) | |
3597 | zfs_fuid_sync(zfsvfs, tx); | |
3598 | ||
3599 | if (zp->z_is_sa) | |
3600 | error = sa_update(zp->z_sa_hdl, SA_ZPL_SYMLINK(zfsvfs), | |
3601 | __DECONST(void *, link), len, tx); | |
3602 | else | |
3603 | zfs_sa_symlink(zp, __DECONST(char *, link), len, tx); | |
3604 | ||
3605 | zp->z_size = len; | |
3606 | (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs), | |
3607 | &zp->z_size, sizeof (zp->z_size), tx); | |
3608 | /* | |
3609 | * Insert the new object into the directory. | |
3610 | */ | |
efbef9e6 AM |
3611 | error = zfs_link_create(dzp, name, zp, tx, ZNEW); |
3612 | if (error != 0) { | |
3613 | zfs_znode_delete(zp, tx); | |
3614 | VOP_UNLOCK1(ZTOV(zp)); | |
3615 | zrele(zp); | |
3616 | } else { | |
3617 | zfs_log_symlink(zilog, tx, txtype, dzp, zp, name, link); | |
3618 | } | |
9f0a21e6 MM |
3619 | |
3620 | zfs_acl_ids_free(&acl_ids); | |
3621 | ||
3622 | dmu_tx_commit(tx); | |
3623 | ||
3624 | getnewvnode_drop_reserve(); | |
3625 | ||
efbef9e6 AM |
3626 | if (error == 0) { |
3627 | *zpp = zp; | |
3628 | ||
3629 | if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS) | |
3630 | zil_commit(zilog, 0); | |
3631 | } | |
9f0a21e6 | 3632 | |
768eaced | 3633 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3634 | return (error); |
3635 | } | |
3636 | ||
3637 | /* | |
3638 | * Return, in the buffer contained in the provided uio structure, | |
3639 | * the symbolic path referred to by vp. | |
3640 | * | |
3641 | * IN: vp - vnode of symbolic link. | |
3642 | * uio - structure to contain the link path. | |
3643 | * cr - credentials of caller. | |
3644 | * ct - caller context | |
3645 | * | |
3646 | * OUT: uio - structure containing the link path. | |
3647 | * | |
3648 | * RETURN: 0 on success, error code on failure. | |
3649 | * | |
3650 | * Timestamps: | |
3651 | * vp - atime updated | |
3652 | */ | |
9f0a21e6 | 3653 | static int |
d0cd9a5c | 3654 | zfs_readlink(vnode_t *vp, zfs_uio_t *uio, cred_t *cr, caller_context_t *ct) |
9f0a21e6 | 3655 | { |
ef70eff1 | 3656 | (void) cr, (void) ct; |
9f0a21e6 MM |
3657 | znode_t *zp = VTOZ(vp); |
3658 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
3659 | int error; | |
3660 | ||
768eaced CC |
3661 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
3662 | return (error); | |
9f0a21e6 MM |
3663 | |
3664 | if (zp->z_is_sa) | |
3665 | error = sa_lookup_uio(zp->z_sa_hdl, | |
3666 | SA_ZPL_SYMLINK(zfsvfs), uio); | |
3667 | else | |
3668 | error = zfs_sa_readlink(zp, uio); | |
3669 | ||
3670 | ZFS_ACCESSTIME_STAMP(zfsvfs, zp); | |
3671 | ||
768eaced | 3672 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3673 | return (error); |
3674 | } | |
3675 | ||
3676 | /* | |
3677 | * Insert a new entry into directory tdvp referencing svp. | |
3678 | * | |
3679 | * IN: tdvp - Directory to contain new entry. | |
3680 | * svp - vnode of new entry. | |
3681 | * name - name of new entry. | |
3682 | * cr - credentials of caller. | |
3683 | * | |
3684 | * RETURN: 0 on success, error code on failure. | |
3685 | * | |
3686 | * Timestamps: | |
3687 | * tdvp - ctime|mtime updated | |
3688 | * svp - ctime updated | |
3689 | */ | |
9f0a21e6 | 3690 | int |
4d55ea81 | 3691 | zfs_link(znode_t *tdzp, znode_t *szp, const char *name, cred_t *cr, |
9f0a21e6 MM |
3692 | int flags) |
3693 | { | |
ef70eff1 | 3694 | (void) flags; |
9f0a21e6 MM |
3695 | znode_t *tzp; |
3696 | zfsvfs_t *zfsvfs = tdzp->z_zfsvfs; | |
3697 | zilog_t *zilog; | |
3698 | dmu_tx_t *tx; | |
3699 | int error; | |
3700 | uint64_t parent; | |
3701 | uid_t owner; | |
3702 | ||
e4efb709 | 3703 | ASSERT3S(ZTOV(tdzp)->v_type, ==, VDIR); |
9f0a21e6 | 3704 | |
768eaced CC |
3705 | if ((error = zfs_enter_verify_zp(zfsvfs, tdzp, FTAG)) != 0) |
3706 | return (error); | |
9f0a21e6 MM |
3707 | zilog = zfsvfs->z_log; |
3708 | ||
3709 | /* | |
3710 | * POSIX dictates that we return EPERM here. | |
3711 | * Better choices include ENOTSUP or EISDIR. | |
3712 | */ | |
3713 | if (ZTOV(szp)->v_type == VDIR) { | |
768eaced | 3714 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3715 | return (SET_ERROR(EPERM)); |
3716 | } | |
3717 | ||
768eaced CC |
3718 | if ((error = zfs_verify_zp(szp)) != 0) { |
3719 | zfs_exit(zfsvfs, FTAG); | |
3720 | return (error); | |
3721 | } | |
9f0a21e6 MM |
3722 | |
3723 | /* | |
3724 | * If we are using project inheritance, means if the directory has | |
3725 | * ZFS_PROJINHERIT set, then its descendant directories will inherit | |
3726 | * not only the project ID, but also the ZFS_PROJINHERIT flag. Under | |
3727 | * such case, we only allow hard link creation in our tree when the | |
3728 | * project IDs are the same. | |
3729 | */ | |
3730 | if (tdzp->z_pflags & ZFS_PROJINHERIT && | |
3731 | tdzp->z_projid != szp->z_projid) { | |
768eaced | 3732 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3733 | return (SET_ERROR(EXDEV)); |
3734 | } | |
3735 | ||
3736 | if (szp->z_pflags & (ZFS_APPENDONLY | | |
3737 | ZFS_IMMUTABLE | ZFS_READONLY)) { | |
768eaced | 3738 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3739 | return (SET_ERROR(EPERM)); |
3740 | } | |
3741 | ||
3742 | /* Prevent links to .zfs/shares files */ | |
3743 | ||
3744 | if ((error = sa_lookup(szp->z_sa_hdl, SA_ZPL_PARENT(zfsvfs), | |
3745 | &parent, sizeof (uint64_t))) != 0) { | |
768eaced | 3746 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3747 | return (error); |
3748 | } | |
3749 | if (parent == zfsvfs->z_shares_dir) { | |
768eaced | 3750 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3751 | return (SET_ERROR(EPERM)); |
3752 | } | |
3753 | ||
3754 | if (zfsvfs->z_utf8 && u8_validate(name, | |
3755 | strlen(name), NULL, U8_VALIDATE_ENTIRE, &error) < 0) { | |
768eaced | 3756 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3757 | return (SET_ERROR(EILSEQ)); |
3758 | } | |
3759 | ||
3760 | /* | |
3761 | * We do not support links between attributes and non-attributes | |
3762 | * because of the potential security risk of creating links | |
3763 | * into "normal" file space in order to circumvent restrictions | |
3764 | * imposed in attribute space. | |
3765 | */ | |
3766 | if ((szp->z_pflags & ZFS_XATTR) != (tdzp->z_pflags & ZFS_XATTR)) { | |
768eaced | 3767 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3768 | return (SET_ERROR(EINVAL)); |
3769 | } | |
3770 | ||
3771 | ||
3772 | owner = zfs_fuid_map_id(zfsvfs, szp->z_uid, cr, ZFS_OWNER); | |
3773 | if (owner != crgetuid(cr) && secpolicy_basic_link(ZTOV(szp), cr) != 0) { | |
768eaced | 3774 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3775 | return (SET_ERROR(EPERM)); |
3776 | } | |
3777 | ||
2a068a13 | 3778 | if ((error = zfs_zaccess(tdzp, ACE_ADD_FILE, 0, B_FALSE, cr, NULL))) { |
768eaced | 3779 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3780 | return (error); |
3781 | } | |
3782 | ||
3783 | /* | |
3784 | * Attempt to lock directory; fail if entry already exists. | |
3785 | */ | |
3786 | error = zfs_dirent_lookup(tdzp, name, &tzp, ZNEW); | |
3787 | if (error) { | |
768eaced | 3788 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3789 | return (error); |
3790 | } | |
3791 | ||
3792 | tx = dmu_tx_create(zfsvfs->z_os); | |
3793 | dmu_tx_hold_sa(tx, szp->z_sa_hdl, B_FALSE); | |
3794 | dmu_tx_hold_zap(tx, tdzp->z_id, TRUE, name); | |
3795 | zfs_sa_upgrade_txholds(tx, szp); | |
3796 | zfs_sa_upgrade_txholds(tx, tdzp); | |
3797 | error = dmu_tx_assign(tx, TXG_WAIT); | |
3798 | if (error) { | |
3799 | dmu_tx_abort(tx); | |
768eaced | 3800 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3801 | return (error); |
3802 | } | |
3803 | ||
3804 | error = zfs_link_create(tdzp, name, szp, tx, 0); | |
3805 | ||
3806 | if (error == 0) { | |
3807 | uint64_t txtype = TX_LINK; | |
3808 | zfs_log_link(zilog, tx, txtype, tdzp, szp, name); | |
3809 | } | |
3810 | ||
3811 | dmu_tx_commit(tx); | |
3812 | ||
3813 | if (error == 0) { | |
3814 | vnevent_link(ZTOV(szp), ct); | |
3815 | } | |
3816 | ||
3817 | if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS) | |
3818 | zil_commit(zilog, 0); | |
3819 | ||
768eaced | 3820 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3821 | return (error); |
3822 | } | |
3823 | ||
3824 | /* | |
3825 | * Free or allocate space in a file. Currently, this function only | |
3826 | * supports the `F_FREESP' command. However, this command is somewhat | |
3827 | * misnamed, as its functionality includes the ability to allocate as | |
3828 | * well as free space. | |
3829 | * | |
3830 | * IN: ip - inode of file to free data in. | |
3831 | * cmd - action to take (only F_FREESP supported). | |
3832 | * bfp - section of file to free/alloc. | |
3833 | * flag - current file open mode flags. | |
3834 | * offset - current file offset. | |
3835 | * cr - credentials of caller. | |
3836 | * | |
3837 | * RETURN: 0 on success, error code on failure. | |
3838 | * | |
3839 | * Timestamps: | |
3840 | * ip - ctime|mtime updated | |
3841 | */ | |
9f0a21e6 MM |
3842 | int |
3843 | zfs_space(znode_t *zp, int cmd, flock64_t *bfp, int flag, | |
3844 | offset_t offset, cred_t *cr) | |
3845 | { | |
ef70eff1 | 3846 | (void) offset; |
9f0a21e6 MM |
3847 | zfsvfs_t *zfsvfs = ZTOZSB(zp); |
3848 | uint64_t off, len; | |
3849 | int error; | |
3850 | ||
768eaced CC |
3851 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
3852 | return (error); | |
9f0a21e6 MM |
3853 | |
3854 | if (cmd != F_FREESP) { | |
768eaced | 3855 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3856 | return (SET_ERROR(EINVAL)); |
3857 | } | |
3858 | ||
3859 | /* | |
3860 | * Callers might not be able to detect properly that we are read-only, | |
3861 | * so check it explicitly here. | |
3862 | */ | |
3863 | if (zfs_is_readonly(zfsvfs)) { | |
768eaced | 3864 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3865 | return (SET_ERROR(EROFS)); |
3866 | } | |
3867 | ||
3868 | if (bfp->l_len < 0) { | |
768eaced | 3869 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3870 | return (SET_ERROR(EINVAL)); |
3871 | } | |
3872 | ||
3873 | /* | |
3874 | * Permissions aren't checked on Solaris because on this OS | |
3875 | * zfs_space() can only be called with an opened file handle. | |
3876 | * On Linux we can get here through truncate_range() which | |
3877 | * operates directly on inodes, so we need to check access rights. | |
3878 | */ | |
2a068a13 | 3879 | if ((error = zfs_zaccess(zp, ACE_WRITE_DATA, 0, B_FALSE, cr, NULL))) { |
768eaced | 3880 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3881 | return (error); |
3882 | } | |
3883 | ||
3884 | off = bfp->l_start; | |
3885 | len = bfp->l_len; /* 0 means from off to end of file */ | |
3886 | ||
3887 | error = zfs_freesp(zp, off, len, flag, TRUE); | |
3888 | ||
768eaced | 3889 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3890 | return (error); |
3891 | } | |
3892 | ||
65c7cc49 | 3893 | static void |
9f0a21e6 MM |
3894 | zfs_inactive(vnode_t *vp, cred_t *cr, caller_context_t *ct) |
3895 | { | |
ef70eff1 | 3896 | (void) cr, (void) ct; |
9f0a21e6 MM |
3897 | znode_t *zp = VTOZ(vp); |
3898 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
3899 | int error; | |
3900 | ||
9847f77f | 3901 | ZFS_TEARDOWN_INACTIVE_ENTER_READ(zfsvfs); |
9f0a21e6 MM |
3902 | if (zp->z_sa_hdl == NULL) { |
3903 | /* | |
3904 | * The fs has been unmounted, or we did a | |
3905 | * suspend/resume and this file no longer exists. | |
3906 | */ | |
9847f77f | 3907 | ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs); |
9f0a21e6 MM |
3908 | vrecycle(vp); |
3909 | return; | |
3910 | } | |
3911 | ||
3912 | if (zp->z_unlinked) { | |
3913 | /* | |
3914 | * Fast path to recycle a vnode of a removed file. | |
3915 | */ | |
9847f77f | 3916 | ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs); |
9f0a21e6 MM |
3917 | vrecycle(vp); |
3918 | return; | |
3919 | } | |
3920 | ||
3921 | if (zp->z_atime_dirty && zp->z_unlinked == 0) { | |
3922 | dmu_tx_t *tx = dmu_tx_create(zfsvfs->z_os); | |
3923 | ||
3924 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); | |
3925 | zfs_sa_upgrade_txholds(tx, zp); | |
3926 | error = dmu_tx_assign(tx, TXG_WAIT); | |
3927 | if (error) { | |
3928 | dmu_tx_abort(tx); | |
3929 | } else { | |
3930 | (void) sa_update(zp->z_sa_hdl, SA_ZPL_ATIME(zfsvfs), | |
3931 | (void *)&zp->z_atime, sizeof (zp->z_atime), tx); | |
3932 | zp->z_atime_dirty = 0; | |
3933 | dmu_tx_commit(tx); | |
3934 | } | |
3935 | } | |
9847f77f | 3936 | ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs); |
9f0a21e6 MM |
3937 | } |
3938 | ||
3939 | ||
c70bb2f6 AZ |
3940 | _Static_assert(sizeof (struct zfid_short) <= sizeof (struct fid), |
3941 | "struct zfid_short bigger than struct fid"); | |
3942 | _Static_assert(sizeof (struct zfid_long) <= sizeof (struct fid), | |
3943 | "struct zfid_long bigger than struct fid"); | |
9f0a21e6 | 3944 | |
9f0a21e6 MM |
3945 | static int |
3946 | zfs_fid(vnode_t *vp, fid_t *fidp, caller_context_t *ct) | |
3947 | { | |
ef70eff1 | 3948 | (void) ct; |
9f0a21e6 MM |
3949 | znode_t *zp = VTOZ(vp); |
3950 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
3951 | uint32_t gen; | |
3952 | uint64_t gen64; | |
3953 | uint64_t object = zp->z_id; | |
3954 | zfid_short_t *zfid; | |
3955 | int size, i, error; | |
3956 | ||
768eaced CC |
3957 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
3958 | return (error); | |
9f0a21e6 MM |
3959 | |
3960 | if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zfsvfs), | |
3961 | &gen64, sizeof (uint64_t))) != 0) { | |
768eaced | 3962 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3963 | return (error); |
3964 | } | |
3965 | ||
3966 | gen = (uint32_t)gen64; | |
3967 | ||
3968 | size = (zfsvfs->z_parent != zfsvfs) ? LONG_FID_LEN : SHORT_FID_LEN; | |
3969 | fidp->fid_len = size; | |
3970 | ||
3971 | zfid = (zfid_short_t *)fidp; | |
3972 | ||
3973 | zfid->zf_len = size; | |
3974 | ||
3975 | for (i = 0; i < sizeof (zfid->zf_object); i++) | |
3976 | zfid->zf_object[i] = (uint8_t)(object >> (8 * i)); | |
3977 | ||
3978 | /* Must have a non-zero generation number to distinguish from .zfs */ | |
3979 | if (gen == 0) | |
3980 | gen = 1; | |
3981 | for (i = 0; i < sizeof (zfid->zf_gen); i++) | |
3982 | zfid->zf_gen[i] = (uint8_t)(gen >> (8 * i)); | |
3983 | ||
3984 | if (size == LONG_FID_LEN) { | |
3985 | uint64_t objsetid = dmu_objset_id(zfsvfs->z_os); | |
3986 | zfid_long_t *zlfid; | |
3987 | ||
3988 | zlfid = (zfid_long_t *)fidp; | |
3989 | ||
3990 | for (i = 0; i < sizeof (zlfid->zf_setid); i++) | |
3991 | zlfid->zf_setid[i] = (uint8_t)(objsetid >> (8 * i)); | |
3992 | ||
3993 | /* XXX - this should be the generation number for the objset */ | |
3994 | for (i = 0; i < sizeof (zlfid->zf_setgen); i++) | |
3995 | zlfid->zf_setgen[i] = 0; | |
3996 | } | |
3997 | ||
768eaced | 3998 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
3999 | return (0); |
4000 | } | |
4001 | ||
4002 | static int | |
4003 | zfs_pathconf(vnode_t *vp, int cmd, ulong_t *valp, cred_t *cr, | |
4004 | caller_context_t *ct) | |
4005 | { | |
485b50bb RM |
4006 | znode_t *zp; |
4007 | zfsvfs_t *zfsvfs; | |
768eaced | 4008 | int error; |
9f0a21e6 MM |
4009 | |
4010 | switch (cmd) { | |
4011 | case _PC_LINK_MAX: | |
4012 | *valp = MIN(LONG_MAX, ZFS_LINK_MAX); | |
4013 | return (0); | |
4014 | ||
4015 | case _PC_FILESIZEBITS: | |
4016 | *valp = 64; | |
4017 | return (0); | |
4018 | case _PC_MIN_HOLE_SIZE: | |
4019 | *valp = (int)SPA_MINBLOCKSIZE; | |
4020 | return (0); | |
4021 | case _PC_ACL_EXTENDED: | |
485b50bb RM |
4022 | #if 0 /* POSIX ACLs are not implemented for ZFS on FreeBSD yet. */ |
4023 | zp = VTOZ(vp); | |
4024 | zfsvfs = zp->z_zfsvfs; | |
768eaced CC |
4025 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
4026 | return (error); | |
485b50bb | 4027 | *valp = zfsvfs->z_acl_type == ZFSACLTYPE_POSIX ? 1 : 0; |
768eaced | 4028 | zfs_exit(zfsvfs, FTAG); |
485b50bb | 4029 | #else |
9f0a21e6 | 4030 | *valp = 0; |
485b50bb | 4031 | #endif |
9f0a21e6 MM |
4032 | return (0); |
4033 | ||
4034 | case _PC_ACL_NFS4: | |
485b50bb RM |
4035 | zp = VTOZ(vp); |
4036 | zfsvfs = zp->z_zfsvfs; | |
768eaced CC |
4037 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
4038 | return (error); | |
485b50bb | 4039 | *valp = zfsvfs->z_acl_type == ZFS_ACLTYPE_NFSV4 ? 1 : 0; |
768eaced | 4040 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
4041 | return (0); |
4042 | ||
4043 | case _PC_ACL_PATH_MAX: | |
4044 | *valp = ACL_MAX_ENTRIES; | |
4045 | return (0); | |
4046 | ||
4047 | default: | |
4048 | return (EOPNOTSUPP); | |
4049 | } | |
4050 | } | |
4051 | ||
9f0a21e6 MM |
4052 | static int |
4053 | zfs_getpages(struct vnode *vp, vm_page_t *ma, int count, int *rbehind, | |
4054 | int *rahead) | |
4055 | { | |
4056 | znode_t *zp = VTOZ(vp); | |
4057 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
9f0a21e6 MM |
4058 | zfs_locked_range_t *lr; |
4059 | vm_object_t object; | |
4060 | off_t start, end, obj_size; | |
4061 | uint_t blksz; | |
4062 | int pgsin_b, pgsin_a; | |
4063 | int error; | |
4064 | ||
768eaced CC |
4065 | if (zfs_enter_verify_zp(zfsvfs, zp, FTAG) != 0) |
4066 | return (zfs_vm_pagerret_error); | |
9f0a21e6 MM |
4067 | |
4068 | start = IDX_TO_OFF(ma[0]->pindex); | |
4069 | end = IDX_TO_OFF(ma[count - 1]->pindex + 1); | |
4070 | ||
4071 | /* | |
4072 | * Lock a range covering all required and optional pages. | |
4073 | * Note that we need to handle the case of the block size growing. | |
4074 | */ | |
4075 | for (;;) { | |
4076 | blksz = zp->z_blksz; | |
cd32b4f5 | 4077 | lr = zfs_rangelock_tryenter(&zp->z_rangelock, |
9f0a21e6 MM |
4078 | rounddown(start, blksz), |
4079 | roundup(end, blksz) - rounddown(start, blksz), RL_READER); | |
cd32b4f5 MJ |
4080 | if (lr == NULL) { |
4081 | if (rahead != NULL) { | |
4082 | *rahead = 0; | |
4083 | rahead = NULL; | |
4084 | } | |
4085 | if (rbehind != NULL) { | |
4086 | *rbehind = 0; | |
4087 | rbehind = NULL; | |
4088 | } | |
4089 | break; | |
4090 | } | |
9f0a21e6 MM |
4091 | if (blksz == zp->z_blksz) |
4092 | break; | |
4093 | zfs_rangelock_exit(lr); | |
4094 | } | |
4095 | ||
4096 | object = ma[0]->object; | |
4097 | zfs_vmobject_wlock(object); | |
4098 | obj_size = object->un_pager.vnp.vnp_size; | |
4099 | zfs_vmobject_wunlock(object); | |
4100 | if (IDX_TO_OFF(ma[count - 1]->pindex) >= obj_size) { | |
0daa0320 MJ |
4101 | if (lr != NULL) |
4102 | zfs_rangelock_exit(lr); | |
768eaced | 4103 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
4104 | return (zfs_vm_pagerret_bad); |
4105 | } | |
4106 | ||
4107 | pgsin_b = 0; | |
4108 | if (rbehind != NULL) { | |
4109 | pgsin_b = OFF_TO_IDX(start - rounddown(start, blksz)); | |
4110 | pgsin_b = MIN(*rbehind, pgsin_b); | |
4111 | } | |
4112 | ||
4113 | pgsin_a = 0; | |
4114 | if (rahead != NULL) { | |
4115 | pgsin_a = OFF_TO_IDX(roundup(end, blksz) - end); | |
4116 | if (end + IDX_TO_OFF(pgsin_a) >= obj_size) | |
4117 | pgsin_a = OFF_TO_IDX(round_page(obj_size) - end); | |
4118 | pgsin_a = MIN(*rahead, pgsin_a); | |
4119 | } | |
4120 | ||
4121 | /* | |
4122 | * NB: we need to pass the exact byte size of the data that we expect | |
4123 | * to read after accounting for the file size. This is required because | |
4124 | * ZFS will panic if we request DMU to read beyond the end of the last | |
4125 | * allocated block. | |
4126 | */ | |
68a7a9ed MJ |
4127 | error = dmu_read_pages(zfsvfs->z_os, zp->z_id, ma, count, &pgsin_b, |
4128 | &pgsin_a, MIN(end, obj_size) - (end - PAGE_SIZE)); | |
9f0a21e6 | 4129 | |
0daa0320 MJ |
4130 | if (lr != NULL) |
4131 | zfs_rangelock_exit(lr); | |
9f0a21e6 | 4132 | ZFS_ACCESSTIME_STAMP(zfsvfs, zp); |
3819aaaf MB |
4133 | |
4134 | dataset_kstats_update_read_kstats(&zfsvfs->z_kstat, count*PAGE_SIZE); | |
4135 | ||
768eaced | 4136 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
4137 | |
4138 | if (error != 0) | |
4139 | return (zfs_vm_pagerret_error); | |
4140 | ||
4141 | VM_CNT_INC(v_vnodein); | |
4142 | VM_CNT_ADD(v_vnodepgsin, count + pgsin_b + pgsin_a); | |
4143 | if (rbehind != NULL) | |
4144 | *rbehind = pgsin_b; | |
4145 | if (rahead != NULL) | |
4146 | *rahead = pgsin_a; | |
4147 | return (zfs_vm_pagerret_ok); | |
4148 | } | |
4149 | ||
4150 | #ifndef _SYS_SYSPROTO_H_ | |
4151 | struct vop_getpages_args { | |
4152 | struct vnode *a_vp; | |
4153 | vm_page_t *a_m; | |
4154 | int a_count; | |
4155 | int *a_rbehind; | |
4156 | int *a_rahead; | |
4157 | }; | |
4158 | #endif | |
4159 | ||
4160 | static int | |
4161 | zfs_freebsd_getpages(struct vop_getpages_args *ap) | |
4162 | { | |
4163 | ||
4164 | return (zfs_getpages(ap->a_vp, ap->a_m, ap->a_count, ap->a_rbehind, | |
4165 | ap->a_rahead)); | |
4166 | } | |
4167 | ||
4168 | static int | |
4169 | zfs_putpages(struct vnode *vp, vm_page_t *ma, size_t len, int flags, | |
4170 | int *rtvals) | |
4171 | { | |
4172 | znode_t *zp = VTOZ(vp); | |
4173 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
4174 | zfs_locked_range_t *lr; | |
4175 | dmu_tx_t *tx; | |
4176 | struct sf_buf *sf; | |
4177 | vm_object_t object; | |
4178 | vm_page_t m; | |
4179 | caddr_t va; | |
4180 | size_t tocopy; | |
4181 | size_t lo_len; | |
4182 | vm_ooffset_t lo_off; | |
4183 | vm_ooffset_t off; | |
4184 | uint_t blksz; | |
4185 | int ncount; | |
4186 | int pcount; | |
4187 | int err; | |
4188 | int i; | |
4189 | ||
9f0a21e6 | 4190 | object = vp->v_object; |
9f0a21e6 MM |
4191 | KASSERT(ma[0]->object == object, ("mismatching object")); |
4192 | KASSERT(len > 0 && (len & PAGE_MASK) == 0, ("unexpected length")); | |
4193 | ||
7dcb8ed2 MJ |
4194 | pcount = btoc(len); |
4195 | ncount = pcount; | |
9f0a21e6 MM |
4196 | for (i = 0; i < pcount; i++) |
4197 | rtvals[i] = zfs_vm_pagerret_error; | |
4198 | ||
768eaced CC |
4199 | if (zfs_enter_verify_zp(zfsvfs, zp, FTAG) != 0) |
4200 | return (zfs_vm_pagerret_error); | |
7dcb8ed2 | 4201 | |
9f0a21e6 MM |
4202 | off = IDX_TO_OFF(ma[0]->pindex); |
4203 | blksz = zp->z_blksz; | |
4204 | lo_off = rounddown(off, blksz); | |
4205 | lo_len = roundup(len + (off - lo_off), blksz); | |
4206 | lr = zfs_rangelock_enter(&zp->z_rangelock, lo_off, lo_len, RL_WRITER); | |
4207 | ||
4208 | zfs_vmobject_wlock(object); | |
4209 | if (len + off > object->un_pager.vnp.vnp_size) { | |
4210 | if (object->un_pager.vnp.vnp_size > off) { | |
4211 | int pgoff; | |
4212 | ||
4213 | len = object->un_pager.vnp.vnp_size - off; | |
4214 | ncount = btoc(len); | |
4215 | if ((pgoff = (int)len & PAGE_MASK) != 0) { | |
4216 | /* | |
4217 | * If the object is locked and the following | |
4218 | * conditions hold, then the page's dirty | |
4219 | * field cannot be concurrently changed by a | |
4220 | * pmap operation. | |
4221 | */ | |
4222 | m = ma[ncount - 1]; | |
4223 | vm_page_assert_sbusied(m); | |
4224 | KASSERT(!pmap_page_is_write_mapped(m), | |
4225 | ("zfs_putpages: page %p is not read-only", | |
4226 | m)); | |
4227 | vm_page_clear_dirty(m, pgoff, PAGE_SIZE - | |
4228 | pgoff); | |
4229 | } | |
4230 | } else { | |
4231 | len = 0; | |
4232 | ncount = 0; | |
4233 | } | |
4234 | if (ncount < pcount) { | |
4235 | for (i = ncount; i < pcount; i++) { | |
4236 | rtvals[i] = zfs_vm_pagerret_bad; | |
4237 | } | |
4238 | } | |
4239 | } | |
4240 | zfs_vmobject_wunlock(object); | |
4241 | ||
c3773de1 AM |
4242 | boolean_t commit = (flags & (zfs_vm_pagerput_sync | |
4243 | zfs_vm_pagerput_inval)) != 0 || | |
4244 | zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS; | |
4245 | ||
9f0a21e6 MM |
4246 | if (ncount == 0) |
4247 | goto out; | |
4248 | ||
4249 | if (zfs_id_overblockquota(zfsvfs, DMU_USERUSED_OBJECT, zp->z_uid) || | |
4250 | zfs_id_overblockquota(zfsvfs, DMU_GROUPUSED_OBJECT, zp->z_gid) || | |
4251 | (zp->z_projid != ZFS_DEFAULT_PROJID && | |
4252 | zfs_id_overblockquota(zfsvfs, DMU_PROJECTUSED_OBJECT, | |
4253 | zp->z_projid))) { | |
4254 | goto out; | |
4255 | } | |
4256 | ||
4257 | tx = dmu_tx_create(zfsvfs->z_os); | |
4258 | dmu_tx_hold_write(tx, zp->z_id, off, len); | |
4259 | ||
4260 | dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE); | |
4261 | zfs_sa_upgrade_txholds(tx, zp); | |
4262 | err = dmu_tx_assign(tx, TXG_WAIT); | |
4263 | if (err != 0) { | |
4264 | dmu_tx_abort(tx); | |
4265 | goto out; | |
4266 | } | |
4267 | ||
4268 | if (zp->z_blksz < PAGE_SIZE) { | |
4269 | for (i = 0; len > 0; off += tocopy, len -= tocopy, i++) { | |
4270 | tocopy = len > PAGE_SIZE ? PAGE_SIZE : len; | |
4271 | va = zfs_map_page(ma[i], &sf); | |
4272 | dmu_write(zfsvfs->z_os, zp->z_id, off, tocopy, va, tx); | |
4273 | zfs_unmap_page(sf); | |
4274 | } | |
4275 | } else { | |
4276 | err = dmu_write_pages(zfsvfs->z_os, zp->z_id, off, len, ma, tx); | |
4277 | } | |
4278 | ||
4279 | if (err == 0) { | |
4280 | uint64_t mtime[2], ctime[2]; | |
4281 | sa_bulk_attr_t bulk[3]; | |
4282 | int count = 0; | |
4283 | ||
4284 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, | |
4285 | &mtime, 16); | |
4286 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, | |
4287 | &ctime, 16); | |
4288 | SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL, | |
4289 | &zp->z_pflags, 8); | |
4290 | zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime); | |
4291 | err = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx); | |
4292 | ASSERT0(err); | |
4293 | /* | |
4294 | * XXX we should be passing a callback to undirty | |
4295 | * but that would make the locking messier | |
4296 | */ | |
4297 | zfs_log_write(zfsvfs->z_log, tx, TX_WRITE, zp, off, | |
c3773de1 | 4298 | len, commit, NULL, NULL); |
9f0a21e6 MM |
4299 | |
4300 | zfs_vmobject_wlock(object); | |
4301 | for (i = 0; i < ncount; i++) { | |
4302 | rtvals[i] = zfs_vm_pagerret_ok; | |
4303 | vm_page_undirty(ma[i]); | |
4304 | } | |
4305 | zfs_vmobject_wunlock(object); | |
4306 | VM_CNT_INC(v_vnodeout); | |
4307 | VM_CNT_ADD(v_vnodepgsout, ncount); | |
4308 | } | |
4309 | dmu_tx_commit(tx); | |
4310 | ||
4311 | out: | |
4312 | zfs_rangelock_exit(lr); | |
c3773de1 | 4313 | if (commit) |
9f0a21e6 | 4314 | zil_commit(zfsvfs->z_log, zp->z_id); |
3819aaaf MB |
4315 | |
4316 | dataset_kstats_update_write_kstats(&zfsvfs->z_kstat, len); | |
4317 | ||
768eaced | 4318 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
4319 | return (rtvals[0]); |
4320 | } | |
4321 | ||
4322 | #ifndef _SYS_SYSPROTO_H_ | |
4323 | struct vop_putpages_args { | |
4324 | struct vnode *a_vp; | |
4325 | vm_page_t *a_m; | |
4326 | int a_count; | |
4327 | int a_sync; | |
4328 | int *a_rtvals; | |
4329 | }; | |
4330 | #endif | |
4331 | ||
65c7cc49 | 4332 | static int |
9f0a21e6 MM |
4333 | zfs_freebsd_putpages(struct vop_putpages_args *ap) |
4334 | { | |
4335 | ||
4336 | return (zfs_putpages(ap->a_vp, ap->a_m, ap->a_count, ap->a_sync, | |
4337 | ap->a_rtvals)); | |
4338 | } | |
4339 | ||
4340 | #ifndef _SYS_SYSPROTO_H_ | |
4341 | struct vop_bmap_args { | |
4342 | struct vnode *a_vp; | |
4343 | daddr_t a_bn; | |
4344 | struct bufobj **a_bop; | |
4345 | daddr_t *a_bnp; | |
4346 | int *a_runp; | |
4347 | int *a_runb; | |
4348 | }; | |
4349 | #endif | |
4350 | ||
4351 | static int | |
4352 | zfs_freebsd_bmap(struct vop_bmap_args *ap) | |
4353 | { | |
4354 | ||
4355 | if (ap->a_bop != NULL) | |
4356 | *ap->a_bop = &ap->a_vp->v_bufobj; | |
4357 | if (ap->a_bnp != NULL) | |
4358 | *ap->a_bnp = ap->a_bn; | |
4359 | if (ap->a_runp != NULL) | |
4360 | *ap->a_runp = 0; | |
4361 | if (ap->a_runb != NULL) | |
4362 | *ap->a_runb = 0; | |
4363 | ||
4364 | return (0); | |
4365 | } | |
4366 | ||
4367 | #ifndef _SYS_SYSPROTO_H_ | |
4368 | struct vop_open_args { | |
4369 | struct vnode *a_vp; | |
4370 | int a_mode; | |
4371 | struct ucred *a_cred; | |
4372 | struct thread *a_td; | |
4373 | }; | |
4374 | #endif | |
4375 | ||
4376 | static int | |
4377 | zfs_freebsd_open(struct vop_open_args *ap) | |
4378 | { | |
4379 | vnode_t *vp = ap->a_vp; | |
4380 | znode_t *zp = VTOZ(vp); | |
4381 | int error; | |
4382 | ||
4383 | error = zfs_open(&vp, ap->a_mode, ap->a_cred); | |
4384 | if (error == 0) | |
4385 | vnode_create_vobject(vp, zp->z_size, ap->a_td); | |
4386 | return (error); | |
4387 | } | |
4388 | ||
4389 | #ifndef _SYS_SYSPROTO_H_ | |
4390 | struct vop_close_args { | |
4391 | struct vnode *a_vp; | |
4392 | int a_fflag; | |
4393 | struct ucred *a_cred; | |
4394 | struct thread *a_td; | |
4395 | }; | |
4396 | #endif | |
4397 | ||
4398 | static int | |
4399 | zfs_freebsd_close(struct vop_close_args *ap) | |
4400 | { | |
4401 | ||
4402 | return (zfs_close(ap->a_vp, ap->a_fflag, 1, 0, ap->a_cred)); | |
4403 | } | |
4404 | ||
4405 | #ifndef _SYS_SYSPROTO_H_ | |
4406 | struct vop_ioctl_args { | |
4407 | struct vnode *a_vp; | |
4408 | ulong_t a_command; | |
4409 | caddr_t a_data; | |
4410 | int a_fflag; | |
4411 | struct ucred *cred; | |
4412 | struct thread *td; | |
4413 | }; | |
4414 | #endif | |
4415 | ||
4416 | static int | |
4417 | zfs_freebsd_ioctl(struct vop_ioctl_args *ap) | |
4418 | { | |
4419 | ||
4420 | return (zfs_ioctl(ap->a_vp, ap->a_command, (intptr_t)ap->a_data, | |
4421 | ap->a_fflag, ap->a_cred, NULL)); | |
4422 | } | |
4423 | ||
4424 | static int | |
4425 | ioflags(int ioflags) | |
4426 | { | |
4427 | int flags = 0; | |
4428 | ||
4429 | if (ioflags & IO_APPEND) | |
a64d757a | 4430 | flags |= O_APPEND; |
9f0a21e6 | 4431 | if (ioflags & IO_NDELAY) |
a64d757a | 4432 | flags |= O_NONBLOCK; |
9f0a21e6 | 4433 | if (ioflags & IO_SYNC) |
a64d757a | 4434 | flags |= O_SYNC; |
9f0a21e6 MM |
4435 | |
4436 | return (flags); | |
4437 | } | |
4438 | ||
4439 | #ifndef _SYS_SYSPROTO_H_ | |
4440 | struct vop_read_args { | |
4441 | struct vnode *a_vp; | |
4442 | struct uio *a_uio; | |
4443 | int a_ioflag; | |
4444 | struct ucred *a_cred; | |
4445 | }; | |
4446 | #endif | |
4447 | ||
4448 | static int | |
4449 | zfs_freebsd_read(struct vop_read_args *ap) | |
4450 | { | |
d0cd9a5c BA |
4451 | zfs_uio_t uio; |
4452 | zfs_uio_init(&uio, ap->a_uio); | |
4453 | return (zfs_read(VTOZ(ap->a_vp), &uio, ioflags(ap->a_ioflag), | |
9f0a21e6 MM |
4454 | ap->a_cred)); |
4455 | } | |
4456 | ||
4457 | #ifndef _SYS_SYSPROTO_H_ | |
4458 | struct vop_write_args { | |
4459 | struct vnode *a_vp; | |
4460 | struct uio *a_uio; | |
4461 | int a_ioflag; | |
4462 | struct ucred *a_cred; | |
4463 | }; | |
4464 | #endif | |
4465 | ||
4466 | static int | |
4467 | zfs_freebsd_write(struct vop_write_args *ap) | |
4468 | { | |
d0cd9a5c BA |
4469 | zfs_uio_t uio; |
4470 | zfs_uio_init(&uio, ap->a_uio); | |
4471 | return (zfs_write(VTOZ(ap->a_vp), &uio, ioflags(ap->a_ioflag), | |
9f0a21e6 MM |
4472 | ap->a_cred)); |
4473 | } | |
4474 | ||
1b376d17 MM |
4475 | #if __FreeBSD_version >= 1300102 |
4476 | /* | |
4477 | * VOP_FPLOOKUP_VEXEC routines are subject to special circumstances, see | |
4478 | * the comment above cache_fplookup for details. | |
4479 | */ | |
4480 | static int | |
4481 | zfs_freebsd_fplookup_vexec(struct vop_fplookup_vexec_args *v) | |
4482 | { | |
4483 | vnode_t *vp; | |
4484 | znode_t *zp; | |
4485 | uint64_t pflags; | |
4486 | ||
4487 | vp = v->a_vp; | |
4488 | zp = VTOZ_SMR(vp); | |
4489 | if (__predict_false(zp == NULL)) | |
4490 | return (EAGAIN); | |
4491 | pflags = atomic_load_64(&zp->z_pflags); | |
4492 | if (pflags & ZFS_AV_QUARANTINED) | |
4493 | return (EAGAIN); | |
4494 | if (pflags & ZFS_XATTR) | |
4495 | return (EAGAIN); | |
4496 | if ((pflags & ZFS_NO_EXECS_DENIED) == 0) | |
4497 | return (EAGAIN); | |
4498 | return (0); | |
4499 | } | |
4500 | #endif | |
4501 | ||
d8c09f3f MG |
4502 | #if __FreeBSD_version >= 1300139 |
4503 | static int | |
4504 | zfs_freebsd_fplookup_symlink(struct vop_fplookup_symlink_args *v) | |
4505 | { | |
4506 | vnode_t *vp; | |
4507 | znode_t *zp; | |
4508 | char *target; | |
4509 | ||
4510 | vp = v->a_vp; | |
4511 | zp = VTOZ_SMR(vp); | |
4512 | if (__predict_false(zp == NULL)) { | |
4513 | return (EAGAIN); | |
4514 | } | |
4515 | ||
4516 | target = atomic_load_consume_ptr(&zp->z_cached_symlink); | |
4517 | if (target == NULL) { | |
4518 | return (EAGAIN); | |
4519 | } | |
4520 | return (cache_symlink_resolve(v->a_fpl, target, strlen(target))); | |
4521 | } | |
4522 | #endif | |
4523 | ||
9f0a21e6 MM |
4524 | #ifndef _SYS_SYSPROTO_H_ |
4525 | struct vop_access_args { | |
4526 | struct vnode *a_vp; | |
4527 | accmode_t a_accmode; | |
4528 | struct ucred *a_cred; | |
4529 | struct thread *a_td; | |
4530 | }; | |
4531 | #endif | |
4532 | ||
4533 | static int | |
4534 | zfs_freebsd_access(struct vop_access_args *ap) | |
4535 | { | |
4536 | vnode_t *vp = ap->a_vp; | |
4537 | znode_t *zp = VTOZ(vp); | |
4538 | accmode_t accmode; | |
4539 | int error = 0; | |
4540 | ||
4541 | ||
4542 | if (ap->a_accmode == VEXEC) { | |
4543 | if (zfs_fastaccesschk_execute(zp, ap->a_cred) == 0) | |
4544 | return (0); | |
4545 | } | |
4546 | ||
4547 | /* | |
4548 | * ZFS itself only knowns about VREAD, VWRITE, VEXEC and VAPPEND, | |
4549 | */ | |
4550 | accmode = ap->a_accmode & (VREAD|VWRITE|VEXEC|VAPPEND); | |
4551 | if (accmode != 0) | |
8583540c | 4552 | error = zfs_access(zp, accmode, 0, ap->a_cred); |
9f0a21e6 MM |
4553 | |
4554 | /* | |
4555 | * VADMIN has to be handled by vaccess(). | |
4556 | */ | |
4557 | if (error == 0) { | |
4558 | accmode = ap->a_accmode & ~(VREAD|VWRITE|VEXEC|VAPPEND); | |
4559 | if (accmode != 0) { | |
0f95ddcc MM |
4560 | #if __FreeBSD_version >= 1300105 |
4561 | error = vaccess(vp->v_type, zp->z_mode, zp->z_uid, | |
4562 | zp->z_gid, accmode, ap->a_cred); | |
4563 | #else | |
9f0a21e6 MM |
4564 | error = vaccess(vp->v_type, zp->z_mode, zp->z_uid, |
4565 | zp->z_gid, accmode, ap->a_cred, NULL); | |
0f95ddcc | 4566 | #endif |
9f0a21e6 MM |
4567 | } |
4568 | } | |
4569 | ||
4570 | /* | |
4571 | * For VEXEC, ensure that at least one execute bit is set for | |
4572 | * non-directories. | |
4573 | */ | |
4574 | if (error == 0 && (ap->a_accmode & VEXEC) != 0 && vp->v_type != VDIR && | |
4575 | (zp->z_mode & (S_IXUSR | S_IXGRP | S_IXOTH)) == 0) { | |
4576 | error = EACCES; | |
4577 | } | |
4578 | ||
4579 | return (error); | |
4580 | } | |
4581 | ||
4582 | #ifndef _SYS_SYSPROTO_H_ | |
4583 | struct vop_lookup_args { | |
4584 | struct vnode *a_dvp; | |
4585 | struct vnode **a_vpp; | |
4586 | struct componentname *a_cnp; | |
4587 | }; | |
4588 | #endif | |
4589 | ||
4590 | static int | |
4591 | zfs_freebsd_lookup(struct vop_lookup_args *ap, boolean_t cached) | |
4592 | { | |
4593 | struct componentname *cnp = ap->a_cnp; | |
4594 | char nm[NAME_MAX + 1]; | |
4595 | ||
e4efb709 | 4596 | ASSERT3U(cnp->cn_namelen, <, sizeof (nm)); |
9f0a21e6 MM |
4597 | strlcpy(nm, cnp->cn_nameptr, MIN(cnp->cn_namelen + 1, sizeof (nm))); |
4598 | ||
4599 | return (zfs_lookup(ap->a_dvp, nm, ap->a_vpp, cnp, cnp->cn_nameiop, | |
ac32854a | 4600 | cnp->cn_cred, 0, cached)); |
9f0a21e6 MM |
4601 | } |
4602 | ||
4603 | static int | |
4604 | zfs_freebsd_cachedlookup(struct vop_cachedlookup_args *ap) | |
4605 | { | |
4606 | ||
4607 | return (zfs_freebsd_lookup((struct vop_lookup_args *)ap, B_TRUE)); | |
4608 | } | |
4609 | ||
4610 | #ifndef _SYS_SYSPROTO_H_ | |
4611 | struct vop_lookup_args { | |
4612 | struct vnode *a_dvp; | |
4613 | struct vnode **a_vpp; | |
4614 | struct componentname *a_cnp; | |
4615 | }; | |
4616 | #endif | |
4617 | ||
4618 | static int | |
4619 | zfs_cache_lookup(struct vop_lookup_args *ap) | |
4620 | { | |
4621 | zfsvfs_t *zfsvfs; | |
4622 | ||
4623 | zfsvfs = ap->a_dvp->v_mount->mnt_data; | |
4624 | if (zfsvfs->z_use_namecache) | |
4625 | return (vfs_cache_lookup(ap)); | |
4626 | else | |
4627 | return (zfs_freebsd_lookup(ap, B_FALSE)); | |
4628 | } | |
4629 | ||
4630 | #ifndef _SYS_SYSPROTO_H_ | |
4631 | struct vop_create_args { | |
4632 | struct vnode *a_dvp; | |
4633 | struct vnode **a_vpp; | |
4634 | struct componentname *a_cnp; | |
4635 | struct vattr *a_vap; | |
4636 | }; | |
4637 | #endif | |
4638 | ||
4639 | static int | |
4640 | zfs_freebsd_create(struct vop_create_args *ap) | |
4641 | { | |
4642 | zfsvfs_t *zfsvfs; | |
4643 | struct componentname *cnp = ap->a_cnp; | |
4644 | vattr_t *vap = ap->a_vap; | |
4645 | znode_t *zp = NULL; | |
4646 | int rc, mode; | |
4647 | ||
3e5caef4 | 4648 | #if __FreeBSD_version < 1400068 |
9f0a21e6 | 4649 | ASSERT(cnp->cn_flags & SAVENAME); |
3e5caef4 | 4650 | #endif |
9f0a21e6 MM |
4651 | |
4652 | vattr_init_mask(vap); | |
4653 | mode = vap->va_mode & ALLPERMS; | |
4654 | zfsvfs = ap->a_dvp->v_mount->mnt_data; | |
4655 | *ap->a_vpp = NULL; | |
4656 | ||
a64d757a | 4657 | rc = zfs_create(VTOZ(ap->a_dvp), cnp->cn_nameptr, vap, 0, mode, |
2a068a13 | 4658 | &zp, cnp->cn_cred, 0 /* flag */, NULL /* vsecattr */, NULL); |
9f0a21e6 MM |
4659 | if (rc == 0) |
4660 | *ap->a_vpp = ZTOV(zp); | |
4661 | if (zfsvfs->z_use_namecache && | |
4662 | rc == 0 && (cnp->cn_flags & MAKEENTRY) != 0) | |
4663 | cache_enter(ap->a_dvp, *ap->a_vpp, cnp); | |
4664 | ||
4665 | return (rc); | |
4666 | } | |
4667 | ||
4668 | #ifndef _SYS_SYSPROTO_H_ | |
4669 | struct vop_remove_args { | |
4670 | struct vnode *a_dvp; | |
4671 | struct vnode *a_vp; | |
4672 | struct componentname *a_cnp; | |
4673 | }; | |
4674 | #endif | |
4675 | ||
4676 | static int | |
4677 | zfs_freebsd_remove(struct vop_remove_args *ap) | |
4678 | { | |
4679 | ||
3e5caef4 | 4680 | #if __FreeBSD_version < 1400068 |
9f0a21e6 | 4681 | ASSERT(ap->a_cnp->cn_flags & SAVENAME); |
3e5caef4 | 4682 | #endif |
9f0a21e6 MM |
4683 | |
4684 | return (zfs_remove_(ap->a_dvp, ap->a_vp, ap->a_cnp->cn_nameptr, | |
4685 | ap->a_cnp->cn_cred)); | |
4686 | } | |
4687 | ||
4688 | #ifndef _SYS_SYSPROTO_H_ | |
4689 | struct vop_mkdir_args { | |
4690 | struct vnode *a_dvp; | |
4691 | struct vnode **a_vpp; | |
4692 | struct componentname *a_cnp; | |
4693 | struct vattr *a_vap; | |
4694 | }; | |
4695 | #endif | |
4696 | ||
4697 | static int | |
4698 | zfs_freebsd_mkdir(struct vop_mkdir_args *ap) | |
4699 | { | |
4700 | vattr_t *vap = ap->a_vap; | |
4701 | znode_t *zp = NULL; | |
4702 | int rc; | |
4703 | ||
3e5caef4 | 4704 | #if __FreeBSD_version < 1400068 |
9f0a21e6 | 4705 | ASSERT(ap->a_cnp->cn_flags & SAVENAME); |
3e5caef4 | 4706 | #endif |
9f0a21e6 MM |
4707 | |
4708 | vattr_init_mask(vap); | |
4709 | *ap->a_vpp = NULL; | |
4710 | ||
4711 | rc = zfs_mkdir(VTOZ(ap->a_dvp), ap->a_cnp->cn_nameptr, vap, &zp, | |
2a068a13 | 4712 | ap->a_cnp->cn_cred, 0, NULL, NULL); |
9f0a21e6 MM |
4713 | |
4714 | if (rc == 0) | |
4715 | *ap->a_vpp = ZTOV(zp); | |
4716 | return (rc); | |
4717 | } | |
4718 | ||
4719 | #ifndef _SYS_SYSPROTO_H_ | |
4720 | struct vop_rmdir_args { | |
4721 | struct vnode *a_dvp; | |
4722 | struct vnode *a_vp; | |
4723 | struct componentname *a_cnp; | |
4724 | }; | |
4725 | #endif | |
4726 | ||
4727 | static int | |
4728 | zfs_freebsd_rmdir(struct vop_rmdir_args *ap) | |
4729 | { | |
4730 | struct componentname *cnp = ap->a_cnp; | |
4731 | ||
3e5caef4 | 4732 | #if __FreeBSD_version < 1400068 |
9f0a21e6 | 4733 | ASSERT(cnp->cn_flags & SAVENAME); |
3e5caef4 | 4734 | #endif |
9f0a21e6 MM |
4735 | |
4736 | return (zfs_rmdir_(ap->a_dvp, ap->a_vp, cnp->cn_nameptr, cnp->cn_cred)); | |
4737 | } | |
4738 | ||
4739 | #ifndef _SYS_SYSPROTO_H_ | |
4740 | struct vop_readdir_args { | |
4741 | struct vnode *a_vp; | |
4742 | struct uio *a_uio; | |
4743 | struct ucred *a_cred; | |
4744 | int *a_eofflag; | |
4745 | int *a_ncookies; | |
ca1b2bb4 | 4746 | cookie_t **a_cookies; |
9f0a21e6 MM |
4747 | }; |
4748 | #endif | |
4749 | ||
4750 | static int | |
4751 | zfs_freebsd_readdir(struct vop_readdir_args *ap) | |
4752 | { | |
d0cd9a5c BA |
4753 | zfs_uio_t uio; |
4754 | zfs_uio_init(&uio, ap->a_uio); | |
4755 | return (zfs_readdir(ap->a_vp, &uio, ap->a_cred, ap->a_eofflag, | |
9f0a21e6 MM |
4756 | ap->a_ncookies, ap->a_cookies)); |
4757 | } | |
4758 | ||
4759 | #ifndef _SYS_SYSPROTO_H_ | |
4760 | struct vop_fsync_args { | |
4761 | struct vnode *a_vp; | |
4762 | int a_waitfor; | |
4763 | struct thread *a_td; | |
4764 | }; | |
4765 | #endif | |
4766 | ||
4767 | static int | |
4768 | zfs_freebsd_fsync(struct vop_fsync_args *ap) | |
4769 | { | |
4770 | ||
e53d678d | 4771 | return (zfs_fsync(VTOZ(ap->a_vp), 0, ap->a_td->td_ucred)); |
9f0a21e6 MM |
4772 | } |
4773 | ||
4774 | #ifndef _SYS_SYSPROTO_H_ | |
4775 | struct vop_getattr_args { | |
4776 | struct vnode *a_vp; | |
4777 | struct vattr *a_vap; | |
4778 | struct ucred *a_cred; | |
4779 | }; | |
4780 | #endif | |
4781 | ||
4782 | static int | |
4783 | zfs_freebsd_getattr(struct vop_getattr_args *ap) | |
4784 | { | |
4785 | vattr_t *vap = ap->a_vap; | |
4786 | xvattr_t xvap; | |
4787 | ulong_t fflags = 0; | |
4788 | int error; | |
4789 | ||
4790 | xva_init(&xvap); | |
4791 | xvap.xva_vattr = *vap; | |
4792 | xvap.xva_vattr.va_mask |= AT_XVATTR; | |
4793 | ||
4794 | /* Convert chflags into ZFS-type flags. */ | |
4795 | /* XXX: what about SF_SETTABLE?. */ | |
4796 | XVA_SET_REQ(&xvap, XAT_IMMUTABLE); | |
4797 | XVA_SET_REQ(&xvap, XAT_APPENDONLY); | |
4798 | XVA_SET_REQ(&xvap, XAT_NOUNLINK); | |
4799 | XVA_SET_REQ(&xvap, XAT_NODUMP); | |
4800 | XVA_SET_REQ(&xvap, XAT_READONLY); | |
4801 | XVA_SET_REQ(&xvap, XAT_ARCHIVE); | |
4802 | XVA_SET_REQ(&xvap, XAT_SYSTEM); | |
4803 | XVA_SET_REQ(&xvap, XAT_HIDDEN); | |
4804 | XVA_SET_REQ(&xvap, XAT_REPARSE); | |
4805 | XVA_SET_REQ(&xvap, XAT_OFFLINE); | |
4806 | XVA_SET_REQ(&xvap, XAT_SPARSE); | |
4807 | ||
4808 | error = zfs_getattr(ap->a_vp, (vattr_t *)&xvap, 0, ap->a_cred); | |
4809 | if (error != 0) | |
4810 | return (error); | |
4811 | ||
4812 | /* Convert ZFS xattr into chflags. */ | |
4813 | #define FLAG_CHECK(fflag, xflag, xfield) do { \ | |
4814 | if (XVA_ISSET_RTN(&xvap, (xflag)) && (xfield) != 0) \ | |
4815 | fflags |= (fflag); \ | |
4816 | } while (0) | |
4817 | FLAG_CHECK(SF_IMMUTABLE, XAT_IMMUTABLE, | |
4818 | xvap.xva_xoptattrs.xoa_immutable); | |
4819 | FLAG_CHECK(SF_APPEND, XAT_APPENDONLY, | |
4820 | xvap.xva_xoptattrs.xoa_appendonly); | |
4821 | FLAG_CHECK(SF_NOUNLINK, XAT_NOUNLINK, | |
4822 | xvap.xva_xoptattrs.xoa_nounlink); | |
4823 | FLAG_CHECK(UF_ARCHIVE, XAT_ARCHIVE, | |
4824 | xvap.xva_xoptattrs.xoa_archive); | |
4825 | FLAG_CHECK(UF_NODUMP, XAT_NODUMP, | |
4826 | xvap.xva_xoptattrs.xoa_nodump); | |
4827 | FLAG_CHECK(UF_READONLY, XAT_READONLY, | |
4828 | xvap.xva_xoptattrs.xoa_readonly); | |
4829 | FLAG_CHECK(UF_SYSTEM, XAT_SYSTEM, | |
4830 | xvap.xva_xoptattrs.xoa_system); | |
4831 | FLAG_CHECK(UF_HIDDEN, XAT_HIDDEN, | |
4832 | xvap.xva_xoptattrs.xoa_hidden); | |
4833 | FLAG_CHECK(UF_REPARSE, XAT_REPARSE, | |
4834 | xvap.xva_xoptattrs.xoa_reparse); | |
4835 | FLAG_CHECK(UF_OFFLINE, XAT_OFFLINE, | |
4836 | xvap.xva_xoptattrs.xoa_offline); | |
4837 | FLAG_CHECK(UF_SPARSE, XAT_SPARSE, | |
4838 | xvap.xva_xoptattrs.xoa_sparse); | |
4839 | ||
4840 | #undef FLAG_CHECK | |
4841 | *vap = xvap.xva_vattr; | |
4842 | vap->va_flags = fflags; | |
4843 | return (0); | |
4844 | } | |
4845 | ||
4846 | #ifndef _SYS_SYSPROTO_H_ | |
4847 | struct vop_setattr_args { | |
4848 | struct vnode *a_vp; | |
4849 | struct vattr *a_vap; | |
4850 | struct ucred *a_cred; | |
4851 | }; | |
4852 | #endif | |
4853 | ||
4854 | static int | |
4855 | zfs_freebsd_setattr(struct vop_setattr_args *ap) | |
4856 | { | |
4857 | vnode_t *vp = ap->a_vp; | |
4858 | vattr_t *vap = ap->a_vap; | |
4859 | cred_t *cred = ap->a_cred; | |
4860 | xvattr_t xvap; | |
4861 | ulong_t fflags; | |
4862 | uint64_t zflags; | |
4863 | ||
4864 | vattr_init_mask(vap); | |
4865 | vap->va_mask &= ~AT_NOSET; | |
4866 | ||
4867 | xva_init(&xvap); | |
4868 | xvap.xva_vattr = *vap; | |
4869 | ||
4870 | zflags = VTOZ(vp)->z_pflags; | |
4871 | ||
4872 | if (vap->va_flags != VNOVAL) { | |
4873 | zfsvfs_t *zfsvfs = VTOZ(vp)->z_zfsvfs; | |
4874 | int error; | |
4875 | ||
4876 | if (zfsvfs->z_use_fuids == B_FALSE) | |
4877 | return (EOPNOTSUPP); | |
4878 | ||
4879 | fflags = vap->va_flags; | |
4880 | /* | |
4881 | * XXX KDM | |
4882 | * We need to figure out whether it makes sense to allow | |
4883 | * UF_REPARSE through, since we don't really have other | |
4884 | * facilities to handle reparse points and zfs_setattr() | |
4885 | * doesn't currently allow setting that attribute anyway. | |
4886 | */ | |
4887 | if ((fflags & ~(SF_IMMUTABLE|SF_APPEND|SF_NOUNLINK|UF_ARCHIVE| | |
4888 | UF_NODUMP|UF_SYSTEM|UF_HIDDEN|UF_READONLY|UF_REPARSE| | |
4889 | UF_OFFLINE|UF_SPARSE)) != 0) | |
4890 | return (EOPNOTSUPP); | |
4891 | /* | |
4892 | * Unprivileged processes are not permitted to unset system | |
4893 | * flags, or modify flags if any system flags are set. | |
4894 | * Privileged non-jail processes may not modify system flags | |
4895 | * if securelevel > 0 and any existing system flags are set. | |
4896 | * Privileged jail processes behave like privileged non-jail | |
4897 | * processes if the PR_ALLOW_CHFLAGS permission bit is set; | |
4898 | * otherwise, they behave like unprivileged processes. | |
4899 | */ | |
4900 | if (secpolicy_fs_owner(vp->v_mount, cred) == 0 || | |
4901 | spl_priv_check_cred(cred, PRIV_VFS_SYSFLAGS) == 0) { | |
4902 | if (zflags & | |
4903 | (ZFS_IMMUTABLE | ZFS_APPENDONLY | ZFS_NOUNLINK)) { | |
4904 | error = securelevel_gt(cred, 0); | |
4905 | if (error != 0) | |
4906 | return (error); | |
4907 | } | |
4908 | } else { | |
4909 | /* | |
4910 | * Callers may only modify the file flags on | |
4911 | * objects they have VADMIN rights for. | |
4912 | */ | |
4913 | if ((error = VOP_ACCESS(vp, VADMIN, cred, | |
4914 | curthread)) != 0) | |
4915 | return (error); | |
4916 | if (zflags & | |
4917 | (ZFS_IMMUTABLE | ZFS_APPENDONLY | | |
4918 | ZFS_NOUNLINK)) { | |
4919 | return (EPERM); | |
4920 | } | |
4921 | if (fflags & | |
4922 | (SF_IMMUTABLE | SF_APPEND | SF_NOUNLINK)) { | |
4923 | return (EPERM); | |
4924 | } | |
4925 | } | |
4926 | ||
4927 | #define FLAG_CHANGE(fflag, zflag, xflag, xfield) do { \ | |
4928 | if (((fflags & (fflag)) && !(zflags & (zflag))) || \ | |
4929 | ((zflags & (zflag)) && !(fflags & (fflag)))) { \ | |
4930 | XVA_SET_REQ(&xvap, (xflag)); \ | |
4931 | (xfield) = ((fflags & (fflag)) != 0); \ | |
4932 | } \ | |
4933 | } while (0) | |
4934 | /* Convert chflags into ZFS-type flags. */ | |
4935 | /* XXX: what about SF_SETTABLE?. */ | |
4936 | FLAG_CHANGE(SF_IMMUTABLE, ZFS_IMMUTABLE, XAT_IMMUTABLE, | |
4937 | xvap.xva_xoptattrs.xoa_immutable); | |
4938 | FLAG_CHANGE(SF_APPEND, ZFS_APPENDONLY, XAT_APPENDONLY, | |
4939 | xvap.xva_xoptattrs.xoa_appendonly); | |
4940 | FLAG_CHANGE(SF_NOUNLINK, ZFS_NOUNLINK, XAT_NOUNLINK, | |
4941 | xvap.xva_xoptattrs.xoa_nounlink); | |
4942 | FLAG_CHANGE(UF_ARCHIVE, ZFS_ARCHIVE, XAT_ARCHIVE, | |
4943 | xvap.xva_xoptattrs.xoa_archive); | |
4944 | FLAG_CHANGE(UF_NODUMP, ZFS_NODUMP, XAT_NODUMP, | |
4945 | xvap.xva_xoptattrs.xoa_nodump); | |
4946 | FLAG_CHANGE(UF_READONLY, ZFS_READONLY, XAT_READONLY, | |
4947 | xvap.xva_xoptattrs.xoa_readonly); | |
4948 | FLAG_CHANGE(UF_SYSTEM, ZFS_SYSTEM, XAT_SYSTEM, | |
4949 | xvap.xva_xoptattrs.xoa_system); | |
4950 | FLAG_CHANGE(UF_HIDDEN, ZFS_HIDDEN, XAT_HIDDEN, | |
4951 | xvap.xva_xoptattrs.xoa_hidden); | |
4952 | FLAG_CHANGE(UF_REPARSE, ZFS_REPARSE, XAT_REPARSE, | |
4953 | xvap.xva_xoptattrs.xoa_reparse); | |
4954 | FLAG_CHANGE(UF_OFFLINE, ZFS_OFFLINE, XAT_OFFLINE, | |
4955 | xvap.xva_xoptattrs.xoa_offline); | |
4956 | FLAG_CHANGE(UF_SPARSE, ZFS_SPARSE, XAT_SPARSE, | |
4957 | xvap.xva_xoptattrs.xoa_sparse); | |
4958 | #undef FLAG_CHANGE | |
4959 | } | |
4960 | if (vap->va_birthtime.tv_sec != VNOVAL) { | |
4961 | xvap.xva_vattr.va_mask |= AT_XVATTR; | |
4962 | XVA_SET_REQ(&xvap, XAT_CREATETIME); | |
4963 | } | |
2a068a13 | 4964 | return (zfs_setattr(VTOZ(vp), (vattr_t *)&xvap, 0, cred, NULL)); |
9f0a21e6 MM |
4965 | } |
4966 | ||
4967 | #ifndef _SYS_SYSPROTO_H_ | |
4968 | struct vop_rename_args { | |
4969 | struct vnode *a_fdvp; | |
4970 | struct vnode *a_fvp; | |
4971 | struct componentname *a_fcnp; | |
4972 | struct vnode *a_tdvp; | |
4973 | struct vnode *a_tvp; | |
4974 | struct componentname *a_tcnp; | |
4975 | }; | |
4976 | #endif | |
4977 | ||
4978 | static int | |
4979 | zfs_freebsd_rename(struct vop_rename_args *ap) | |
4980 | { | |
4981 | vnode_t *fdvp = ap->a_fdvp; | |
4982 | vnode_t *fvp = ap->a_fvp; | |
4983 | vnode_t *tdvp = ap->a_tdvp; | |
4984 | vnode_t *tvp = ap->a_tvp; | |
4985 | int error; | |
4986 | ||
3e5caef4 | 4987 | #if __FreeBSD_version < 1400068 |
9f0a21e6 MM |
4988 | ASSERT(ap->a_fcnp->cn_flags & (SAVENAME|SAVESTART)); |
4989 | ASSERT(ap->a_tcnp->cn_flags & (SAVENAME|SAVESTART)); | |
3e5caef4 | 4990 | #endif |
9f0a21e6 | 4991 | |
ded851b2 MJ |
4992 | error = zfs_do_rename(fdvp, &fvp, ap->a_fcnp, tdvp, &tvp, |
4993 | ap->a_tcnp, ap->a_fcnp->cn_cred); | |
9f0a21e6 MM |
4994 | |
4995 | vrele(fdvp); | |
4996 | vrele(fvp); | |
4997 | vrele(tdvp); | |
4998 | if (tvp != NULL) | |
4999 | vrele(tvp); | |
5000 | ||
5001 | return (error); | |
5002 | } | |
5003 | ||
5004 | #ifndef _SYS_SYSPROTO_H_ | |
5005 | struct vop_symlink_args { | |
5006 | struct vnode *a_dvp; | |
5007 | struct vnode **a_vpp; | |
5008 | struct componentname *a_cnp; | |
5009 | struct vattr *a_vap; | |
5010 | char *a_target; | |
5011 | }; | |
5012 | #endif | |
5013 | ||
5014 | static int | |
5015 | zfs_freebsd_symlink(struct vop_symlink_args *ap) | |
5016 | { | |
5017 | struct componentname *cnp = ap->a_cnp; | |
5018 | vattr_t *vap = ap->a_vap; | |
5019 | znode_t *zp = NULL; | |
d8c09f3f MG |
5020 | #if __FreeBSD_version >= 1300139 |
5021 | char *symlink; | |
5022 | size_t symlink_len; | |
5023 | #endif | |
9f0a21e6 MM |
5024 | int rc; |
5025 | ||
3e5caef4 | 5026 | #if __FreeBSD_version < 1400068 |
9f0a21e6 | 5027 | ASSERT(cnp->cn_flags & SAVENAME); |
3e5caef4 | 5028 | #endif |
9f0a21e6 MM |
5029 | |
5030 | vap->va_type = VLNK; /* FreeBSD: Syscall only sets va_mode. */ | |
5031 | vattr_init_mask(vap); | |
5032 | *ap->a_vpp = NULL; | |
5033 | ||
5034 | rc = zfs_symlink(VTOZ(ap->a_dvp), cnp->cn_nameptr, vap, | |
2a068a13 | 5035 | ap->a_target, &zp, cnp->cn_cred, 0 /* flags */, NULL); |
d8c09f3f | 5036 | if (rc == 0) { |
9f0a21e6 | 5037 | *ap->a_vpp = ZTOV(zp); |
d8c09f3f MG |
5038 | ASSERT_VOP_ELOCKED(ZTOV(zp), __func__); |
5039 | #if __FreeBSD_version >= 1300139 | |
5040 | MPASS(zp->z_cached_symlink == NULL); | |
5041 | symlink_len = strlen(ap->a_target); | |
5042 | symlink = cache_symlink_alloc(symlink_len + 1, M_WAITOK); | |
5043 | if (symlink != NULL) { | |
5044 | memcpy(symlink, ap->a_target, symlink_len); | |
5045 | symlink[symlink_len] = '\0'; | |
5046 | atomic_store_rel_ptr((uintptr_t *)&zp->z_cached_symlink, | |
5047 | (uintptr_t)symlink); | |
5048 | } | |
5049 | #endif | |
5050 | } | |
9f0a21e6 MM |
5051 | return (rc); |
5052 | } | |
5053 | ||
5054 | #ifndef _SYS_SYSPROTO_H_ | |
5055 | struct vop_readlink_args { | |
5056 | struct vnode *a_vp; | |
5057 | struct uio *a_uio; | |
5058 | struct ucred *a_cred; | |
5059 | }; | |
5060 | #endif | |
5061 | ||
5062 | static int | |
5063 | zfs_freebsd_readlink(struct vop_readlink_args *ap) | |
5064 | { | |
d0cd9a5c | 5065 | zfs_uio_t uio; |
d8c09f3f MG |
5066 | int error; |
5067 | #if __FreeBSD_version >= 1300139 | |
5068 | znode_t *zp = VTOZ(ap->a_vp); | |
5069 | char *symlink, *base; | |
5070 | size_t symlink_len; | |
5071 | bool trycache; | |
5072 | #endif | |
5073 | ||
d0cd9a5c | 5074 | zfs_uio_init(&uio, ap->a_uio); |
d8c09f3f MG |
5075 | #if __FreeBSD_version >= 1300139 |
5076 | trycache = false; | |
5077 | if (zfs_uio_segflg(&uio) == UIO_SYSSPACE && | |
5078 | zfs_uio_iovcnt(&uio) == 1) { | |
5079 | base = zfs_uio_iovbase(&uio, 0); | |
5080 | symlink_len = zfs_uio_iovlen(&uio, 0); | |
5081 | trycache = true; | |
5082 | } | |
5083 | #endif | |
5084 | error = zfs_readlink(ap->a_vp, &uio, ap->a_cred, NULL); | |
5085 | #if __FreeBSD_version >= 1300139 | |
5086 | if (atomic_load_ptr(&zp->z_cached_symlink) != NULL || | |
5087 | error != 0 || !trycache) { | |
5088 | return (error); | |
5089 | } | |
5090 | symlink_len -= zfs_uio_resid(&uio); | |
5091 | symlink = cache_symlink_alloc(symlink_len + 1, M_WAITOK); | |
5092 | if (symlink != NULL) { | |
5093 | memcpy(symlink, base, symlink_len); | |
5094 | symlink[symlink_len] = '\0'; | |
5095 | if (!atomic_cmpset_rel_ptr((uintptr_t *)&zp->z_cached_symlink, | |
5096 | (uintptr_t)NULL, (uintptr_t)symlink)) { | |
5097 | cache_symlink_free(symlink, symlink_len + 1); | |
5098 | } | |
5099 | } | |
5100 | #endif | |
5101 | return (error); | |
9f0a21e6 MM |
5102 | } |
5103 | ||
5104 | #ifndef _SYS_SYSPROTO_H_ | |
5105 | struct vop_link_args { | |
5106 | struct vnode *a_tdvp; | |
5107 | struct vnode *a_vp; | |
5108 | struct componentname *a_cnp; | |
5109 | }; | |
5110 | #endif | |
5111 | ||
5112 | static int | |
5113 | zfs_freebsd_link(struct vop_link_args *ap) | |
5114 | { | |
5115 | struct componentname *cnp = ap->a_cnp; | |
5116 | vnode_t *vp = ap->a_vp; | |
5117 | vnode_t *tdvp = ap->a_tdvp; | |
5118 | ||
5119 | if (tdvp->v_mount != vp->v_mount) | |
5120 | return (EXDEV); | |
5121 | ||
3e5caef4 | 5122 | #if __FreeBSD_version < 1400068 |
9f0a21e6 | 5123 | ASSERT(cnp->cn_flags & SAVENAME); |
3e5caef4 | 5124 | #endif |
9f0a21e6 MM |
5125 | |
5126 | return (zfs_link(VTOZ(tdvp), VTOZ(vp), | |
5127 | cnp->cn_nameptr, cnp->cn_cred, 0)); | |
5128 | } | |
5129 | ||
5130 | #ifndef _SYS_SYSPROTO_H_ | |
5131 | struct vop_inactive_args { | |
5132 | struct vnode *a_vp; | |
5133 | struct thread *a_td; | |
5134 | }; | |
5135 | #endif | |
5136 | ||
5137 | static int | |
5138 | zfs_freebsd_inactive(struct vop_inactive_args *ap) | |
5139 | { | |
5140 | vnode_t *vp = ap->a_vp; | |
5141 | ||
01a65c58 MG |
5142 | #if __FreeBSD_version >= 1300123 |
5143 | zfs_inactive(vp, curthread->td_ucred, NULL); | |
5144 | #else | |
9f0a21e6 | 5145 | zfs_inactive(vp, ap->a_td->td_ucred, NULL); |
01a65c58 | 5146 | #endif |
9f0a21e6 MM |
5147 | return (0); |
5148 | } | |
5149 | ||
5150 | #if __FreeBSD_version >= 1300042 | |
5151 | #ifndef _SYS_SYSPROTO_H_ | |
5152 | struct vop_need_inactive_args { | |
5153 | struct vnode *a_vp; | |
5154 | struct thread *a_td; | |
5155 | }; | |
5156 | #endif | |
5157 | ||
5158 | static int | |
5159 | zfs_freebsd_need_inactive(struct vop_need_inactive_args *ap) | |
5160 | { | |
5161 | vnode_t *vp = ap->a_vp; | |
5162 | znode_t *zp = VTOZ(vp); | |
5163 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
8a3d9186 RM |
5164 | int need; |
5165 | ||
5166 | if (vn_need_pageq_flush(vp)) | |
5167 | return (1); | |
9f0a21e6 | 5168 | |
9847f77f | 5169 | if (!ZFS_TEARDOWN_INACTIVE_TRY_ENTER_READ(zfsvfs)) |
8a3d9186 | 5170 | return (1); |
9f0a21e6 | 5171 | need = (zp->z_sa_hdl == NULL || zp->z_unlinked || zp->z_atime_dirty); |
9847f77f | 5172 | ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs); |
9f0a21e6 MM |
5173 | |
5174 | return (need); | |
5175 | } | |
5176 | #endif | |
5177 | ||
5178 | #ifndef _SYS_SYSPROTO_H_ | |
5179 | struct vop_reclaim_args { | |
5180 | struct vnode *a_vp; | |
5181 | struct thread *a_td; | |
5182 | }; | |
5183 | #endif | |
5184 | ||
5185 | static int | |
5186 | zfs_freebsd_reclaim(struct vop_reclaim_args *ap) | |
5187 | { | |
5188 | vnode_t *vp = ap->a_vp; | |
5189 | znode_t *zp = VTOZ(vp); | |
5190 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
5191 | ||
e4efb709 | 5192 | ASSERT3P(zp, !=, NULL); |
9f0a21e6 MM |
5193 | |
5194 | #if __FreeBSD_version < 1300042 | |
5195 | /* Destroy the vm object and flush associated pages. */ | |
5196 | vnode_destroy_vobject(vp); | |
5197 | #endif | |
5198 | /* | |
5199 | * z_teardown_inactive_lock protects from a race with | |
5200 | * zfs_znode_dmu_fini in zfsvfs_teardown during | |
5201 | * force unmount. | |
5202 | */ | |
9847f77f | 5203 | ZFS_TEARDOWN_INACTIVE_ENTER_READ(zfsvfs); |
9f0a21e6 MM |
5204 | if (zp->z_sa_hdl == NULL) |
5205 | zfs_znode_free(zp); | |
5206 | else | |
5207 | zfs_zinactive(zp); | |
9847f77f | 5208 | ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs); |
9f0a21e6 MM |
5209 | |
5210 | vp->v_data = NULL; | |
5211 | return (0); | |
5212 | } | |
5213 | ||
5214 | #ifndef _SYS_SYSPROTO_H_ | |
5215 | struct vop_fid_args { | |
5216 | struct vnode *a_vp; | |
5217 | struct fid *a_fid; | |
5218 | }; | |
5219 | #endif | |
5220 | ||
5221 | static int | |
5222 | zfs_freebsd_fid(struct vop_fid_args *ap) | |
5223 | { | |
5224 | ||
5225 | return (zfs_fid(ap->a_vp, (void *)ap->a_fid, NULL)); | |
5226 | } | |
5227 | ||
5228 | ||
5229 | #ifndef _SYS_SYSPROTO_H_ | |
5230 | struct vop_pathconf_args { | |
5231 | struct vnode *a_vp; | |
5232 | int a_name; | |
5233 | register_t *a_retval; | |
5234 | } *ap; | |
5235 | #endif | |
5236 | ||
5237 | static int | |
5238 | zfs_freebsd_pathconf(struct vop_pathconf_args *ap) | |
5239 | { | |
5240 | ulong_t val; | |
5241 | int error; | |
5242 | ||
5243 | error = zfs_pathconf(ap->a_vp, ap->a_name, &val, | |
5244 | curthread->td_ucred, NULL); | |
5245 | if (error == 0) { | |
5246 | *ap->a_retval = val; | |
5247 | return (error); | |
5248 | } | |
5249 | if (error != EOPNOTSUPP) | |
5250 | return (error); | |
5251 | ||
5252 | switch (ap->a_name) { | |
5253 | case _PC_NAME_MAX: | |
5254 | *ap->a_retval = NAME_MAX; | |
5255 | return (0); | |
f3bbeb97 KHN |
5256 | #if __FreeBSD_version >= 1400032 |
5257 | case _PC_DEALLOC_PRESENT: | |
5258 | *ap->a_retval = 1; | |
5259 | return (0); | |
5260 | #endif | |
9f0a21e6 MM |
5261 | case _PC_PIPE_BUF: |
5262 | if (ap->a_vp->v_type == VDIR || ap->a_vp->v_type == VFIFO) { | |
5263 | *ap->a_retval = PIPE_BUF; | |
5264 | return (0); | |
5265 | } | |
5266 | return (EINVAL); | |
5267 | default: | |
5268 | return (vop_stdpathconf(ap)); | |
5269 | } | |
5270 | } | |
5271 | ||
5c006134 RM |
5272 | static int zfs_xattr_compat = 1; |
5273 | ||
5274 | static int | |
5275 | zfs_check_attrname(const char *name) | |
5276 | { | |
5277 | /* We don't allow '/' character in attribute name. */ | |
5278 | if (strchr(name, '/') != NULL) | |
5279 | return (SET_ERROR(EINVAL)); | |
5280 | /* We don't allow attribute names that start with a namespace prefix. */ | |
5281 | if (ZFS_XA_NS_PREFIX_FORBIDDEN(name)) | |
5282 | return (SET_ERROR(EINVAL)); | |
5283 | return (0); | |
5284 | } | |
5285 | ||
9f0a21e6 MM |
5286 | /* |
5287 | * FreeBSD's extended attributes namespace defines file name prefix for ZFS' | |
5288 | * extended attribute name: | |
5289 | * | |
5c006134 RM |
5290 | * NAMESPACE XATTR_COMPAT PREFIX |
5291 | * system * freebsd:system: | |
5292 | * user 1 (none, can be used to access ZFS | |
5293 | * fsattr(5) attributes created on Solaris) | |
5294 | * user 0 user. | |
9f0a21e6 MM |
5295 | */ |
5296 | static int | |
5297 | zfs_create_attrname(int attrnamespace, const char *name, char *attrname, | |
5c006134 | 5298 | size_t size, boolean_t compat) |
9f0a21e6 MM |
5299 | { |
5300 | const char *namespace, *prefix, *suffix; | |
5301 | ||
861166b0 | 5302 | memset(attrname, 0, size); |
9f0a21e6 MM |
5303 | |
5304 | switch (attrnamespace) { | |
5305 | case EXTATTR_NAMESPACE_USER: | |
5c006134 RM |
5306 | if (compat) { |
5307 | /* | |
5308 | * This is the default namespace by which we can access | |
5309 | * all attributes created on Solaris. | |
5310 | */ | |
5311 | prefix = namespace = suffix = ""; | |
5312 | } else { | |
5313 | /* | |
5314 | * This is compatible with the user namespace encoding | |
5315 | * on Linux prior to xattr_compat, but nothing | |
5316 | * else. | |
5317 | */ | |
5318 | prefix = ""; | |
5319 | namespace = "user"; | |
5320 | suffix = "."; | |
5321 | } | |
9f0a21e6 MM |
5322 | break; |
5323 | case EXTATTR_NAMESPACE_SYSTEM: | |
5324 | prefix = "freebsd:"; | |
5325 | namespace = EXTATTR_NAMESPACE_SYSTEM_STRING; | |
5326 | suffix = ":"; | |
5327 | break; | |
5328 | case EXTATTR_NAMESPACE_EMPTY: | |
5329 | default: | |
d86debf5 | 5330 | return (SET_ERROR(EINVAL)); |
9f0a21e6 MM |
5331 | } |
5332 | if (snprintf(attrname, size, "%s%s%s%s", prefix, namespace, suffix, | |
5333 | name) >= size) { | |
d86debf5 | 5334 | return (SET_ERROR(ENAMETOOLONG)); |
9f0a21e6 MM |
5335 | } |
5336 | return (0); | |
5337 | } | |
5338 | ||
210231ed RM |
5339 | static int |
5340 | zfs_ensure_xattr_cached(znode_t *zp) | |
5341 | { | |
5342 | int error = 0; | |
5343 | ||
5344 | ASSERT(RW_LOCK_HELD(&zp->z_xattr_lock)); | |
5345 | ||
5346 | if (zp->z_xattr_cached != NULL) | |
5347 | return (0); | |
5348 | ||
5349 | if (rw_write_held(&zp->z_xattr_lock)) | |
5350 | return (zfs_sa_get_xattr(zp)); | |
5351 | ||
5352 | if (!rw_tryupgrade(&zp->z_xattr_lock)) { | |
5353 | rw_exit(&zp->z_xattr_lock); | |
5354 | rw_enter(&zp->z_xattr_lock, RW_WRITER); | |
5355 | } | |
5356 | if (zp->z_xattr_cached == NULL) | |
5357 | error = zfs_sa_get_xattr(zp); | |
5358 | rw_downgrade(&zp->z_xattr_lock); | |
5359 | return (error); | |
5360 | } | |
5361 | ||
9f0a21e6 MM |
5362 | #ifndef _SYS_SYSPROTO_H_ |
5363 | struct vop_getextattr { | |
5364 | IN struct vnode *a_vp; | |
5365 | IN int a_attrnamespace; | |
5366 | IN const char *a_name; | |
5367 | INOUT struct uio *a_uio; | |
5368 | OUT size_t *a_size; | |
5369 | IN struct ucred *a_cred; | |
5370 | IN struct thread *a_td; | |
5371 | }; | |
5372 | #endif | |
5373 | ||
9f0a21e6 | 5374 | static int |
210231ed | 5375 | zfs_getextattr_dir(struct vop_getextattr_args *ap, const char *attrname) |
9f0a21e6 | 5376 | { |
9f0a21e6 MM |
5377 | struct thread *td = ap->a_td; |
5378 | struct nameidata nd; | |
9f0a21e6 MM |
5379 | struct vattr va; |
5380 | vnode_t *xvp = NULL, *vp; | |
5381 | int error, flags; | |
5382 | ||
ac32854a | 5383 | error = zfs_lookup(ap->a_vp, NULL, &xvp, NULL, 0, ap->a_cred, |
9f0a21e6 | 5384 | LOOKUP_XATTR, B_FALSE); |
210231ed | 5385 | if (error != 0) |
9f0a21e6 | 5386 | return (error); |
9f0a21e6 MM |
5387 | |
5388 | flags = FREAD; | |
d172264d | 5389 | #if __FreeBSD_version < 1400043 |
9f0a21e6 MM |
5390 | NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, attrname, |
5391 | xvp, td); | |
d172264d RM |
5392 | #else |
5393 | NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, attrname, xvp); | |
5394 | #endif | |
cdcce2f0 | 5395 | error = vn_open_cred(&nd, &flags, 0, VN_OPEN_INVFS, ap->a_cred, NULL); |
210231ed | 5396 | if (error != 0) |
65b92936 | 5397 | return (SET_ERROR(error)); |
3e5caef4 MG |
5398 | vp = nd.ni_vp; |
5399 | NDFREE_PNBUF(&nd); | |
9f0a21e6 MM |
5400 | |
5401 | if (ap->a_size != NULL) { | |
5402 | error = VOP_GETATTR(vp, &va, ap->a_cred); | |
5403 | if (error == 0) | |
5404 | *ap->a_size = (size_t)va.va_size; | |
5405 | } else if (ap->a_uio != NULL) | |
5406 | error = VOP_READ(vp, ap->a_uio, IO_UNIT, ap->a_cred); | |
5407 | ||
5408 | VOP_UNLOCK1(vp); | |
5409 | vn_close(vp, flags, ap->a_cred, td); | |
9f0a21e6 MM |
5410 | return (error); |
5411 | } | |
5412 | ||
210231ed RM |
5413 | static int |
5414 | zfs_getextattr_sa(struct vop_getextattr_args *ap, const char *attrname) | |
5415 | { | |
5416 | znode_t *zp = VTOZ(ap->a_vp); | |
5417 | uchar_t *nv_value; | |
5418 | uint_t nv_size; | |
5419 | int error; | |
5420 | ||
5421 | error = zfs_ensure_xattr_cached(zp); | |
5422 | if (error != 0) | |
5423 | return (error); | |
5424 | ||
5425 | ASSERT(RW_LOCK_HELD(&zp->z_xattr_lock)); | |
5426 | ASSERT3P(zp->z_xattr_cached, !=, NULL); | |
5427 | ||
5428 | error = nvlist_lookup_byte_array(zp->z_xattr_cached, attrname, | |
5429 | &nv_value, &nv_size); | |
65b92936 RM |
5430 | if (error != 0) |
5431 | return (SET_ERROR(error)); | |
210231ed RM |
5432 | |
5433 | if (ap->a_size != NULL) | |
5434 | *ap->a_size = nv_size; | |
5435 | else if (ap->a_uio != NULL) | |
5436 | error = uiomove(nv_value, nv_size, ap->a_uio); | |
65b92936 RM |
5437 | if (error != 0) |
5438 | return (SET_ERROR(error)); | |
210231ed | 5439 | |
65b92936 | 5440 | return (0); |
210231ed | 5441 | } |
9f0a21e6 | 5442 | |
5c006134 RM |
5443 | static int |
5444 | zfs_getextattr_impl(struct vop_getextattr_args *ap, boolean_t compat) | |
5445 | { | |
5446 | znode_t *zp = VTOZ(ap->a_vp); | |
5447 | zfsvfs_t *zfsvfs = ZTOZSB(zp); | |
5448 | char attrname[EXTATTR_MAXNAMELEN+1]; | |
5449 | int error; | |
5450 | ||
5451 | error = zfs_create_attrname(ap->a_attrnamespace, ap->a_name, attrname, | |
5452 | sizeof (attrname), compat); | |
5453 | if (error != 0) | |
5454 | return (error); | |
5455 | ||
5456 | error = ENOENT; | |
5457 | if (zfsvfs->z_use_sa && zp->z_is_sa) | |
5458 | error = zfs_getextattr_sa(ap, attrname); | |
5459 | if (error == ENOENT) | |
5460 | error = zfs_getextattr_dir(ap, attrname); | |
5461 | return (error); | |
5462 | } | |
5463 | ||
9f0a21e6 | 5464 | /* |
210231ed | 5465 | * Vnode operation to retrieve a named extended attribute. |
9f0a21e6 | 5466 | */ |
65c7cc49 | 5467 | static int |
210231ed | 5468 | zfs_getextattr(struct vop_getextattr_args *ap) |
9f0a21e6 | 5469 | { |
210231ed RM |
5470 | znode_t *zp = VTOZ(ap->a_vp); |
5471 | zfsvfs_t *zfsvfs = ZTOZSB(zp); | |
9f0a21e6 MM |
5472 | int error; |
5473 | ||
5474 | /* | |
5475 | * If the xattr property is off, refuse the request. | |
5476 | */ | |
210231ed | 5477 | if (!(zfsvfs->z_flags & ZSB_XATTR)) |
9f0a21e6 | 5478 | return (SET_ERROR(EOPNOTSUPP)); |
9f0a21e6 MM |
5479 | |
5480 | error = extattr_check_cred(ap->a_vp, ap->a_attrnamespace, | |
210231ed | 5481 | ap->a_cred, ap->a_td, VREAD); |
9f0a21e6 | 5482 | if (error != 0) |
65b92936 | 5483 | return (SET_ERROR(error)); |
9f0a21e6 | 5484 | |
5c006134 | 5485 | error = zfs_check_attrname(ap->a_name); |
9f0a21e6 MM |
5486 | if (error != 0) |
5487 | return (error); | |
5488 | ||
768eaced CC |
5489 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
5490 | return (error); | |
210231ed | 5491 | error = ENOENT; |
210231ed | 5492 | rw_enter(&zp->z_xattr_lock, RW_READER); |
5c006134 RM |
5493 | |
5494 | error = zfs_getextattr_impl(ap, zfs_xattr_compat); | |
5495 | if ((error == ENOENT || error == ENOATTR) && | |
5496 | ap->a_attrnamespace == EXTATTR_NAMESPACE_USER) { | |
5497 | /* | |
5498 | * Fall back to the alternate namespace format if we failed to | |
5499 | * find a user xattr. | |
5500 | */ | |
5501 | error = zfs_getextattr_impl(ap, !zfs_xattr_compat); | |
5502 | } | |
5503 | ||
210231ed | 5504 | rw_exit(&zp->z_xattr_lock); |
768eaced | 5505 | zfs_exit(zfsvfs, FTAG); |
210231ed RM |
5506 | if (error == ENOENT) |
5507 | error = SET_ERROR(ENOATTR); | |
5508 | return (error); | |
5509 | } | |
5510 | ||
5511 | #ifndef _SYS_SYSPROTO_H_ | |
5512 | struct vop_deleteextattr { | |
5513 | IN struct vnode *a_vp; | |
5514 | IN int a_attrnamespace; | |
5515 | IN const char *a_name; | |
5516 | IN struct ucred *a_cred; | |
5517 | IN struct thread *a_td; | |
5518 | }; | |
5519 | #endif | |
5520 | ||
5521 | static int | |
5522 | zfs_deleteextattr_dir(struct vop_deleteextattr_args *ap, const char *attrname) | |
5523 | { | |
210231ed RM |
5524 | struct nameidata nd; |
5525 | vnode_t *xvp = NULL, *vp; | |
5526 | int error; | |
9f0a21e6 | 5527 | |
ac32854a | 5528 | error = zfs_lookup(ap->a_vp, NULL, &xvp, NULL, 0, ap->a_cred, |
9f0a21e6 | 5529 | LOOKUP_XATTR, B_FALSE); |
210231ed | 5530 | if (error != 0) |
9f0a21e6 | 5531 | return (error); |
9f0a21e6 | 5532 | |
d172264d | 5533 | #if __FreeBSD_version < 1400043 |
9f0a21e6 | 5534 | NDINIT_ATVP(&nd, DELETE, NOFOLLOW | LOCKPARENT | LOCKLEAF, |
ac32854a | 5535 | UIO_SYSSPACE, attrname, xvp, ap->a_td); |
d172264d RM |
5536 | #else |
5537 | NDINIT_ATVP(&nd, DELETE, NOFOLLOW | LOCKPARENT | LOCKLEAF, | |
5538 | UIO_SYSSPACE, attrname, xvp); | |
5539 | #endif | |
9f0a21e6 | 5540 | error = namei(&nd); |
3e5caef4 | 5541 | if (error != 0) |
65b92936 | 5542 | return (SET_ERROR(error)); |
9f0a21e6 | 5543 | |
3e5caef4 | 5544 | vp = nd.ni_vp; |
9f0a21e6 | 5545 | error = VOP_REMOVE(nd.ni_dvp, vp, &nd.ni_cnd); |
b61507ec | 5546 | NDFREE_PNBUF(&nd); |
9f0a21e6 MM |
5547 | |
5548 | vput(nd.ni_dvp); | |
5549 | if (vp == nd.ni_dvp) | |
5550 | vrele(vp); | |
5551 | else | |
5552 | vput(vp); | |
9f0a21e6 MM |
5553 | |
5554 | return (error); | |
5555 | } | |
5556 | ||
210231ed RM |
5557 | static int |
5558 | zfs_deleteextattr_sa(struct vop_deleteextattr_args *ap, const char *attrname) | |
5559 | { | |
5560 | znode_t *zp = VTOZ(ap->a_vp); | |
5561 | nvlist_t *nvl; | |
5562 | int error; | |
5563 | ||
5564 | error = zfs_ensure_xattr_cached(zp); | |
5565 | if (error != 0) | |
5566 | return (error); | |
5567 | ||
5568 | ASSERT(RW_WRITE_HELD(&zp->z_xattr_lock)); | |
5569 | ASSERT3P(zp->z_xattr_cached, !=, NULL); | |
5570 | ||
5571 | nvl = zp->z_xattr_cached; | |
5572 | error = nvlist_remove(nvl, attrname, DATA_TYPE_BYTE_ARRAY); | |
65b92936 RM |
5573 | if (error != 0) |
5574 | error = SET_ERROR(error); | |
5575 | else | |
361a7e82 | 5576 | error = zfs_sa_set_xattr(zp, attrname, NULL, 0); |
210231ed RM |
5577 | if (error != 0) { |
5578 | zp->z_xattr_cached = NULL; | |
5579 | nvlist_free(nvl); | |
5580 | } | |
5581 | return (error); | |
5582 | } | |
9f0a21e6 | 5583 | |
5c006134 RM |
5584 | static int |
5585 | zfs_deleteextattr_impl(struct vop_deleteextattr_args *ap, boolean_t compat) | |
5586 | { | |
5587 | znode_t *zp = VTOZ(ap->a_vp); | |
5588 | zfsvfs_t *zfsvfs = ZTOZSB(zp); | |
5589 | char attrname[EXTATTR_MAXNAMELEN+1]; | |
5590 | int error; | |
5591 | ||
5592 | error = zfs_create_attrname(ap->a_attrnamespace, ap->a_name, attrname, | |
5593 | sizeof (attrname), compat); | |
5594 | if (error != 0) | |
5595 | return (error); | |
5596 | ||
5597 | error = ENOENT; | |
5598 | if (zfsvfs->z_use_sa && zp->z_is_sa) | |
5599 | error = zfs_deleteextattr_sa(ap, attrname); | |
5600 | if (error == ENOENT) | |
5601 | error = zfs_deleteextattr_dir(ap, attrname); | |
5602 | return (error); | |
5603 | } | |
5604 | ||
9f0a21e6 | 5605 | /* |
210231ed | 5606 | * Vnode operation to remove a named attribute. |
9f0a21e6 MM |
5607 | */ |
5608 | static int | |
210231ed | 5609 | zfs_deleteextattr(struct vop_deleteextattr_args *ap) |
9f0a21e6 | 5610 | { |
210231ed RM |
5611 | znode_t *zp = VTOZ(ap->a_vp); |
5612 | zfsvfs_t *zfsvfs = ZTOZSB(zp); | |
210231ed | 5613 | int error; |
9f0a21e6 MM |
5614 | |
5615 | /* | |
5616 | * If the xattr property is off, refuse the request. | |
5617 | */ | |
210231ed | 5618 | if (!(zfsvfs->z_flags & ZSB_XATTR)) |
9f0a21e6 | 5619 | return (SET_ERROR(EOPNOTSUPP)); |
9f0a21e6 MM |
5620 | |
5621 | error = extattr_check_cred(ap->a_vp, ap->a_attrnamespace, | |
5622 | ap->a_cred, ap->a_td, VWRITE); | |
5623 | if (error != 0) | |
65b92936 | 5624 | return (SET_ERROR(error)); |
210231ed | 5625 | |
5c006134 | 5626 | error = zfs_check_attrname(ap->a_name); |
9f0a21e6 MM |
5627 | if (error != 0) |
5628 | return (error); | |
5629 | ||
768eaced CC |
5630 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
5631 | return (error); | |
210231ed | 5632 | rw_enter(&zp->z_xattr_lock, RW_WRITER); |
5c006134 RM |
5633 | |
5634 | error = zfs_deleteextattr_impl(ap, zfs_xattr_compat); | |
5635 | if ((error == ENOENT || error == ENOATTR) && | |
5636 | ap->a_attrnamespace == EXTATTR_NAMESPACE_USER) { | |
5637 | /* | |
5638 | * Fall back to the alternate namespace format if we failed to | |
5639 | * find a user xattr. | |
5640 | */ | |
5641 | error = zfs_deleteextattr_impl(ap, !zfs_xattr_compat); | |
210231ed | 5642 | } |
5c006134 | 5643 | |
210231ed | 5644 | rw_exit(&zp->z_xattr_lock); |
768eaced | 5645 | zfs_exit(zfsvfs, FTAG); |
210231ed RM |
5646 | if (error == ENOENT) |
5647 | error = SET_ERROR(ENOATTR); | |
5648 | return (error); | |
5649 | } | |
5650 | ||
5651 | #ifndef _SYS_SYSPROTO_H_ | |
5652 | struct vop_setextattr { | |
5653 | IN struct vnode *a_vp; | |
5654 | IN int a_attrnamespace; | |
5655 | IN const char *a_name; | |
5656 | INOUT struct uio *a_uio; | |
5657 | IN struct ucred *a_cred; | |
5658 | IN struct thread *a_td; | |
5659 | }; | |
5660 | #endif | |
5661 | ||
5662 | static int | |
5663 | zfs_setextattr_dir(struct vop_setextattr_args *ap, const char *attrname) | |
5664 | { | |
5665 | struct thread *td = ap->a_td; | |
5666 | struct nameidata nd; | |
5667 | struct vattr va; | |
5668 | vnode_t *xvp = NULL, *vp; | |
5669 | int error, flags; | |
9f0a21e6 | 5670 | |
ac32854a | 5671 | error = zfs_lookup(ap->a_vp, NULL, &xvp, NULL, 0, ap->a_cred, |
9f0a21e6 | 5672 | LOOKUP_XATTR | CREATE_XATTR_DIR, B_FALSE); |
210231ed | 5673 | if (error != 0) |
9f0a21e6 | 5674 | return (error); |
9f0a21e6 MM |
5675 | |
5676 | flags = FFLAGS(O_WRONLY | O_CREAT); | |
d172264d | 5677 | #if __FreeBSD_version < 1400043 |
210231ed | 5678 | NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, attrname, xvp, td); |
d172264d RM |
5679 | #else |
5680 | NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, attrname, xvp); | |
5681 | #endif | |
9f0a21e6 MM |
5682 | error = vn_open_cred(&nd, &flags, 0600, VN_OPEN_INVFS, ap->a_cred, |
5683 | NULL); | |
210231ed | 5684 | if (error != 0) |
65b92936 | 5685 | return (SET_ERROR(error)); |
3e5caef4 MG |
5686 | vp = nd.ni_vp; |
5687 | NDFREE_PNBUF(&nd); | |
9f0a21e6 MM |
5688 | |
5689 | VATTR_NULL(&va); | |
5690 | va.va_size = 0; | |
5691 | error = VOP_SETATTR(vp, &va, ap->a_cred); | |
5692 | if (error == 0) | |
5693 | VOP_WRITE(vp, ap->a_uio, IO_UNIT, ap->a_cred); | |
5694 | ||
5695 | VOP_UNLOCK1(vp); | |
5696 | vn_close(vp, flags, ap->a_cred, td); | |
9f0a21e6 MM |
5697 | return (error); |
5698 | } | |
5699 | ||
210231ed RM |
5700 | static int |
5701 | zfs_setextattr_sa(struct vop_setextattr_args *ap, const char *attrname) | |
5702 | { | |
5703 | znode_t *zp = VTOZ(ap->a_vp); | |
5704 | nvlist_t *nvl; | |
5705 | size_t sa_size; | |
5706 | int error; | |
5707 | ||
5708 | error = zfs_ensure_xattr_cached(zp); | |
5709 | if (error != 0) | |
5710 | return (error); | |
5711 | ||
5712 | ASSERT(RW_WRITE_HELD(&zp->z_xattr_lock)); | |
5713 | ASSERT3P(zp->z_xattr_cached, !=, NULL); | |
5714 | ||
5715 | nvl = zp->z_xattr_cached; | |
5716 | size_t entry_size = ap->a_uio->uio_resid; | |
5717 | if (entry_size > DXATTR_MAX_ENTRY_SIZE) | |
5718 | return (SET_ERROR(EFBIG)); | |
5719 | error = nvlist_size(nvl, &sa_size, NV_ENCODE_XDR); | |
5720 | if (error != 0) | |
65b92936 | 5721 | return (SET_ERROR(error)); |
210231ed RM |
5722 | if (sa_size > DXATTR_MAX_SA_SIZE) |
5723 | return (SET_ERROR(EFBIG)); | |
5724 | uchar_t *buf = kmem_alloc(entry_size, KM_SLEEP); | |
5725 | error = uiomove(buf, entry_size, ap->a_uio); | |
65b92936 RM |
5726 | if (error != 0) { |
5727 | error = SET_ERROR(error); | |
5728 | } else { | |
210231ed | 5729 | error = nvlist_add_byte_array(nvl, attrname, buf, entry_size); |
65b92936 RM |
5730 | if (error != 0) |
5731 | error = SET_ERROR(error); | |
5732 | } | |
210231ed | 5733 | if (error == 0) |
361a7e82 JP |
5734 | error = zfs_sa_set_xattr(zp, attrname, buf, entry_size); |
5735 | kmem_free(buf, entry_size); | |
210231ed RM |
5736 | if (error != 0) { |
5737 | zp->z_xattr_cached = NULL; | |
5738 | nvlist_free(nvl); | |
5739 | } | |
5740 | return (error); | |
5741 | } | |
9f0a21e6 | 5742 | |
9f0a21e6 | 5743 | static int |
5c006134 | 5744 | zfs_setextattr_impl(struct vop_setextattr_args *ap, boolean_t compat) |
9f0a21e6 | 5745 | { |
210231ed RM |
5746 | znode_t *zp = VTOZ(ap->a_vp); |
5747 | zfsvfs_t *zfsvfs = ZTOZSB(zp); | |
5748 | char attrname[EXTATTR_MAXNAMELEN+1]; | |
5749 | int error; | |
9f0a21e6 | 5750 | |
210231ed | 5751 | error = zfs_create_attrname(ap->a_attrnamespace, ap->a_name, attrname, |
5c006134 | 5752 | sizeof (attrname), compat); |
9f0a21e6 MM |
5753 | if (error != 0) |
5754 | return (error); | |
9f0a21e6 | 5755 | |
210231ed RM |
5756 | struct vop_deleteextattr_args vda = { |
5757 | .a_vp = ap->a_vp, | |
5c006134 RM |
5758 | .a_attrnamespace = ap->a_attrnamespace, |
5759 | .a_name = ap->a_name, | |
210231ed RM |
5760 | .a_cred = ap->a_cred, |
5761 | .a_td = ap->a_td, | |
5762 | }; | |
5763 | error = ENOENT; | |
210231ed RM |
5764 | if (zfsvfs->z_use_sa && zp->z_is_sa && zfsvfs->z_xattr_sa) { |
5765 | error = zfs_setextattr_sa(ap, attrname); | |
5c006134 | 5766 | if (error == 0) { |
210231ed RM |
5767 | /* |
5768 | * Successfully put into SA, we need to clear the one | |
5769 | * in dir if present. | |
5770 | */ | |
5771 | zfs_deleteextattr_dir(&vda, attrname); | |
5c006134 | 5772 | } |
210231ed | 5773 | } |
5c006134 | 5774 | if (error != 0) { |
210231ed | 5775 | error = zfs_setextattr_dir(ap, attrname); |
5c006134 | 5776 | if (error == 0 && zp->z_is_sa) { |
210231ed RM |
5777 | /* |
5778 | * Successfully put into dir, we need to clear the one | |
5779 | * in SA if present. | |
5780 | */ | |
5781 | zfs_deleteextattr_sa(&vda, attrname); | |
5c006134 | 5782 | } |
210231ed | 5783 | } |
5c006134 RM |
5784 | if (error == 0 && ap->a_attrnamespace == EXTATTR_NAMESPACE_USER) { |
5785 | /* | |
5786 | * Also clear all versions of the alternate compat name. | |
5787 | */ | |
5788 | zfs_deleteextattr_impl(&vda, !compat); | |
5789 | } | |
5790 | return (error); | |
5791 | } | |
5792 | ||
5793 | /* | |
5794 | * Vnode operation to set a named attribute. | |
5795 | */ | |
5796 | static int | |
5797 | zfs_setextattr(struct vop_setextattr_args *ap) | |
5798 | { | |
5799 | znode_t *zp = VTOZ(ap->a_vp); | |
5800 | zfsvfs_t *zfsvfs = ZTOZSB(zp); | |
5801 | int error; | |
5802 | ||
5803 | /* | |
5804 | * If the xattr property is off, refuse the request. | |
5805 | */ | |
5806 | if (!(zfsvfs->z_flags & ZSB_XATTR)) | |
5807 | return (SET_ERROR(EOPNOTSUPP)); | |
5808 | ||
5809 | error = extattr_check_cred(ap->a_vp, ap->a_attrnamespace, | |
5810 | ap->a_cred, ap->a_td, VWRITE); | |
5811 | if (error != 0) | |
5812 | return (SET_ERROR(error)); | |
5813 | ||
5814 | error = zfs_check_attrname(ap->a_name); | |
5815 | if (error != 0) | |
5816 | return (error); | |
5817 | ||
768eaced CC |
5818 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
5819 | return (error); | |
5c006134 RM |
5820 | rw_enter(&zp->z_xattr_lock, RW_WRITER); |
5821 | ||
5822 | error = zfs_setextattr_impl(ap, zfs_xattr_compat); | |
5823 | ||
210231ed | 5824 | rw_exit(&zp->z_xattr_lock); |
768eaced | 5825 | zfs_exit(zfsvfs, FTAG); |
210231ed RM |
5826 | return (error); |
5827 | } | |
9f0a21e6 | 5828 | |
210231ed RM |
5829 | #ifndef _SYS_SYSPROTO_H_ |
5830 | struct vop_listextattr { | |
5831 | IN struct vnode *a_vp; | |
5832 | IN int a_attrnamespace; | |
5833 | INOUT struct uio *a_uio; | |
5834 | OUT size_t *a_size; | |
5835 | IN struct ucred *a_cred; | |
5836 | IN struct thread *a_td; | |
5837 | }; | |
5838 | #endif | |
5839 | ||
5840 | static int | |
5841 | zfs_listextattr_dir(struct vop_listextattr_args *ap, const char *attrprefix) | |
5842 | { | |
5843 | struct thread *td = ap->a_td; | |
5844 | struct nameidata nd; | |
5845 | uint8_t dirbuf[sizeof (struct dirent)]; | |
5846 | struct iovec aiov; | |
5847 | struct uio auio; | |
5848 | vnode_t *xvp = NULL, *vp; | |
5849 | int error, eof; | |
9f0a21e6 | 5850 | |
ac32854a | 5851 | error = zfs_lookup(ap->a_vp, NULL, &xvp, NULL, 0, ap->a_cred, |
9f0a21e6 MM |
5852 | LOOKUP_XATTR, B_FALSE); |
5853 | if (error != 0) { | |
9f0a21e6 MM |
5854 | /* |
5855 | * ENOATTR means that the EA directory does not yet exist, | |
5856 | * i.e. there are no extended attributes there. | |
5857 | */ | |
5858 | if (error == ENOATTR) | |
5859 | error = 0; | |
5860 | return (error); | |
5861 | } | |
5862 | ||
d172264d | 5863 | #if __FreeBSD_version < 1400043 |
9f0a21e6 MM |
5864 | NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKSHARED, |
5865 | UIO_SYSSPACE, ".", xvp, td); | |
d172264d RM |
5866 | #else |
5867 | NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | LOCKSHARED, | |
5868 | UIO_SYSSPACE, ".", xvp); | |
5869 | #endif | |
9f0a21e6 | 5870 | error = namei(&nd); |
210231ed | 5871 | if (error != 0) |
65b92936 | 5872 | return (SET_ERROR(error)); |
3e5caef4 MG |
5873 | vp = nd.ni_vp; |
5874 | NDFREE_PNBUF(&nd); | |
9f0a21e6 MM |
5875 | |
5876 | auio.uio_iov = &aiov; | |
5877 | auio.uio_iovcnt = 1; | |
5878 | auio.uio_segflg = UIO_SYSSPACE; | |
5879 | auio.uio_td = td; | |
5880 | auio.uio_rw = UIO_READ; | |
5881 | auio.uio_offset = 0; | |
5882 | ||
210231ed | 5883 | size_t plen = strlen(attrprefix); |
9f0a21e6 | 5884 | |
210231ed | 5885 | do { |
9f0a21e6 MM |
5886 | aiov.iov_base = (void *)dirbuf; |
5887 | aiov.iov_len = sizeof (dirbuf); | |
5888 | auio.uio_resid = sizeof (dirbuf); | |
5889 | error = VOP_READDIR(vp, &auio, ap->a_cred, &eof, NULL, NULL); | |
9f0a21e6 MM |
5890 | if (error != 0) |
5891 | break; | |
210231ed RM |
5892 | int done = sizeof (dirbuf) - auio.uio_resid; |
5893 | for (int pos = 0; pos < done; ) { | |
5894 | struct dirent *dp = (struct dirent *)(dirbuf + pos); | |
9f0a21e6 MM |
5895 | pos += dp->d_reclen; |
5896 | /* | |
5897 | * XXX: Temporarily we also accept DT_UNKNOWN, as this | |
5898 | * is what we get when attribute was created on Solaris. | |
5899 | */ | |
5900 | if (dp->d_type != DT_REG && dp->d_type != DT_UNKNOWN) | |
5901 | continue; | |
210231ed | 5902 | else if (plen == 0 && |
5c006134 | 5903 | ZFS_XA_NS_PREFIX_FORBIDDEN(dp->d_name)) |
9f0a21e6 MM |
5904 | continue; |
5905 | else if (strncmp(dp->d_name, attrprefix, plen) != 0) | |
5906 | continue; | |
210231ed RM |
5907 | uint8_t nlen = dp->d_namlen - plen; |
5908 | if (ap->a_size != NULL) { | |
5909 | *ap->a_size += 1 + nlen; | |
5910 | } else if (ap->a_uio != NULL) { | |
9f0a21e6 MM |
5911 | /* |
5912 | * Format of extattr name entry is one byte for | |
5913 | * length and the rest for name. | |
5914 | */ | |
210231ed | 5915 | error = uiomove(&nlen, 1, ap->a_uio); |
9f0a21e6 | 5916 | if (error == 0) { |
210231ed RM |
5917 | char *namep = dp->d_name + plen; |
5918 | error = uiomove(namep, nlen, ap->a_uio); | |
9f0a21e6 | 5919 | } |
65b92936 RM |
5920 | if (error != 0) { |
5921 | error = SET_ERROR(error); | |
9f0a21e6 | 5922 | break; |
65b92936 | 5923 | } |
9f0a21e6 MM |
5924 | } |
5925 | } | |
5926 | } while (!eof && error == 0); | |
5927 | ||
5928 | vput(vp); | |
210231ed RM |
5929 | return (error); |
5930 | } | |
5931 | ||
5932 | static int | |
5933 | zfs_listextattr_sa(struct vop_listextattr_args *ap, const char *attrprefix) | |
5934 | { | |
5935 | znode_t *zp = VTOZ(ap->a_vp); | |
5936 | int error; | |
5937 | ||
5938 | error = zfs_ensure_xattr_cached(zp); | |
5939 | if (error != 0) | |
5940 | return (error); | |
5941 | ||
5942 | ASSERT(RW_LOCK_HELD(&zp->z_xattr_lock)); | |
5943 | ASSERT3P(zp->z_xattr_cached, !=, NULL); | |
5944 | ||
5945 | size_t plen = strlen(attrprefix); | |
5946 | nvpair_t *nvp = NULL; | |
5947 | while ((nvp = nvlist_next_nvpair(zp->z_xattr_cached, nvp)) != NULL) { | |
5948 | ASSERT3U(nvpair_type(nvp), ==, DATA_TYPE_BYTE_ARRAY); | |
5949 | ||
5950 | const char *name = nvpair_name(nvp); | |
5c006134 | 5951 | if (plen == 0 && ZFS_XA_NS_PREFIX_FORBIDDEN(name)) |
210231ed RM |
5952 | continue; |
5953 | else if (strncmp(name, attrprefix, plen) != 0) | |
5954 | continue; | |
5955 | uint8_t nlen = strlen(name) - plen; | |
5956 | if (ap->a_size != NULL) { | |
5957 | *ap->a_size += 1 + nlen; | |
5958 | } else if (ap->a_uio != NULL) { | |
5959 | /* | |
5960 | * Format of extattr name entry is one byte for | |
5961 | * length and the rest for name. | |
5962 | */ | |
5963 | error = uiomove(&nlen, 1, ap->a_uio); | |
5964 | if (error == 0) { | |
5965 | char *namep = __DECONST(char *, name) + plen; | |
5966 | error = uiomove(namep, nlen, ap->a_uio); | |
5967 | } | |
65b92936 RM |
5968 | if (error != 0) { |
5969 | error = SET_ERROR(error); | |
210231ed | 5970 | break; |
65b92936 | 5971 | } |
210231ed RM |
5972 | } |
5973 | } | |
5974 | ||
5975 | return (error); | |
5976 | } | |
5977 | ||
5c006134 RM |
5978 | static int |
5979 | zfs_listextattr_impl(struct vop_listextattr_args *ap, boolean_t compat) | |
5980 | { | |
5981 | znode_t *zp = VTOZ(ap->a_vp); | |
5982 | zfsvfs_t *zfsvfs = ZTOZSB(zp); | |
5983 | char attrprefix[16]; | |
5984 | int error; | |
5985 | ||
5986 | error = zfs_create_attrname(ap->a_attrnamespace, "", attrprefix, | |
5987 | sizeof (attrprefix), compat); | |
5988 | if (error != 0) | |
5989 | return (error); | |
5990 | ||
5991 | if (zfsvfs->z_use_sa && zp->z_is_sa) | |
5992 | error = zfs_listextattr_sa(ap, attrprefix); | |
5993 | if (error == 0) | |
5994 | error = zfs_listextattr_dir(ap, attrprefix); | |
5995 | return (error); | |
5996 | } | |
5997 | ||
210231ed RM |
5998 | /* |
5999 | * Vnode operation to retrieve extended attributes on a vnode. | |
6000 | */ | |
6001 | static int | |
6002 | zfs_listextattr(struct vop_listextattr_args *ap) | |
6003 | { | |
6004 | znode_t *zp = VTOZ(ap->a_vp); | |
6005 | zfsvfs_t *zfsvfs = ZTOZSB(zp); | |
210231ed RM |
6006 | int error; |
6007 | ||
6008 | if (ap->a_size != NULL) | |
6009 | *ap->a_size = 0; | |
9f0a21e6 | 6010 | |
210231ed RM |
6011 | /* |
6012 | * If the xattr property is off, refuse the request. | |
6013 | */ | |
6014 | if (!(zfsvfs->z_flags & ZSB_XATTR)) | |
6015 | return (SET_ERROR(EOPNOTSUPP)); | |
6016 | ||
6017 | error = extattr_check_cred(ap->a_vp, ap->a_attrnamespace, | |
6018 | ap->a_cred, ap->a_td, VREAD); | |
6019 | if (error != 0) | |
65b92936 | 6020 | return (SET_ERROR(error)); |
210231ed | 6021 | |
768eaced CC |
6022 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
6023 | return (error); | |
210231ed | 6024 | rw_enter(&zp->z_xattr_lock, RW_READER); |
5c006134 RM |
6025 | |
6026 | error = zfs_listextattr_impl(ap, zfs_xattr_compat); | |
6027 | if (error == 0 && ap->a_attrnamespace == EXTATTR_NAMESPACE_USER) { | |
6028 | /* Also list user xattrs with the alternate format. */ | |
6029 | error = zfs_listextattr_impl(ap, !zfs_xattr_compat); | |
6030 | } | |
6031 | ||
210231ed | 6032 | rw_exit(&zp->z_xattr_lock); |
768eaced | 6033 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
6034 | return (error); |
6035 | } | |
6036 | ||
6037 | #ifndef _SYS_SYSPROTO_H_ | |
6038 | struct vop_getacl_args { | |
6039 | struct vnode *vp; | |
6040 | acl_type_t type; | |
6041 | struct acl *aclp; | |
6042 | struct ucred *cred; | |
6043 | struct thread *td; | |
6044 | }; | |
6045 | #endif | |
6046 | ||
65c7cc49 | 6047 | static int |
9f0a21e6 MM |
6048 | zfs_freebsd_getacl(struct vop_getacl_args *ap) |
6049 | { | |
6050 | int error; | |
6051 | vsecattr_t vsecattr; | |
6052 | ||
6053 | if (ap->a_type != ACL_TYPE_NFS4) | |
6054 | return (EINVAL); | |
6055 | ||
6056 | vsecattr.vsa_mask = VSA_ACE | VSA_ACECNT; | |
e53d678d MM |
6057 | if ((error = zfs_getsecattr(VTOZ(ap->a_vp), |
6058 | &vsecattr, 0, ap->a_cred))) | |
9f0a21e6 MM |
6059 | return (error); |
6060 | ||
6061 | error = acl_from_aces(ap->a_aclp, vsecattr.vsa_aclentp, | |
6062 | vsecattr.vsa_aclcnt); | |
6063 | if (vsecattr.vsa_aclentp != NULL) | |
6064 | kmem_free(vsecattr.vsa_aclentp, vsecattr.vsa_aclentsz); | |
6065 | ||
6066 | return (error); | |
6067 | } | |
6068 | ||
6069 | #ifndef _SYS_SYSPROTO_H_ | |
6070 | struct vop_setacl_args { | |
6071 | struct vnode *vp; | |
6072 | acl_type_t type; | |
6073 | struct acl *aclp; | |
6074 | struct ucred *cred; | |
6075 | struct thread *td; | |
6076 | }; | |
6077 | #endif | |
6078 | ||
65c7cc49 | 6079 | static int |
9f0a21e6 MM |
6080 | zfs_freebsd_setacl(struct vop_setacl_args *ap) |
6081 | { | |
6082 | int error; | |
6083 | vsecattr_t vsecattr; | |
6084 | int aclbsize; /* size of acl list in bytes */ | |
6085 | aclent_t *aaclp; | |
6086 | ||
6087 | if (ap->a_type != ACL_TYPE_NFS4) | |
6088 | return (EINVAL); | |
6089 | ||
6090 | if (ap->a_aclp == NULL) | |
6091 | return (EINVAL); | |
6092 | ||
6093 | if (ap->a_aclp->acl_cnt < 1 || ap->a_aclp->acl_cnt > MAX_ACL_ENTRIES) | |
6094 | return (EINVAL); | |
6095 | ||
6096 | /* | |
6097 | * With NFSv4 ACLs, chmod(2) may need to add additional entries, | |
6098 | * splitting every entry into two and appending "canonical six" | |
6099 | * entries at the end. Don't allow for setting an ACL that would | |
6100 | * cause chmod(2) to run out of ACL entries. | |
6101 | */ | |
6102 | if (ap->a_aclp->acl_cnt * 2 + 6 > ACL_MAX_ENTRIES) | |
6103 | return (ENOSPC); | |
6104 | ||
6105 | error = acl_nfs4_check(ap->a_aclp, ap->a_vp->v_type == VDIR); | |
6106 | if (error != 0) | |
6107 | return (error); | |
6108 | ||
6109 | vsecattr.vsa_mask = VSA_ACE; | |
6110 | aclbsize = ap->a_aclp->acl_cnt * sizeof (ace_t); | |
6111 | vsecattr.vsa_aclentp = kmem_alloc(aclbsize, KM_SLEEP); | |
6112 | aaclp = vsecattr.vsa_aclentp; | |
6113 | vsecattr.vsa_aclentsz = aclbsize; | |
6114 | ||
6115 | aces_from_acl(vsecattr.vsa_aclentp, &vsecattr.vsa_aclcnt, ap->a_aclp); | |
6116 | error = zfs_setsecattr(VTOZ(ap->a_vp), &vsecattr, 0, ap->a_cred); | |
6117 | kmem_free(aaclp, aclbsize); | |
6118 | ||
6119 | return (error); | |
6120 | } | |
6121 | ||
6122 | #ifndef _SYS_SYSPROTO_H_ | |
6123 | struct vop_aclcheck_args { | |
6124 | struct vnode *vp; | |
6125 | acl_type_t type; | |
6126 | struct acl *aclp; | |
6127 | struct ucred *cred; | |
6128 | struct thread *td; | |
6129 | }; | |
6130 | #endif | |
6131 | ||
65c7cc49 | 6132 | static int |
9f0a21e6 MM |
6133 | zfs_freebsd_aclcheck(struct vop_aclcheck_args *ap) |
6134 | { | |
6135 | ||
6136 | return (EOPNOTSUPP); | |
6137 | } | |
6138 | ||
6139 | static int | |
6140 | zfs_vptocnp(struct vop_vptocnp_args *ap) | |
6141 | { | |
6142 | vnode_t *covered_vp; | |
6143 | vnode_t *vp = ap->a_vp; | |
6144 | zfsvfs_t *zfsvfs = vp->v_vfsp->vfs_data; | |
6145 | znode_t *zp = VTOZ(vp); | |
6146 | int ltype; | |
6147 | int error; | |
6148 | ||
768eaced CC |
6149 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
6150 | return (error); | |
9f0a21e6 MM |
6151 | |
6152 | /* | |
6153 | * If we are a snapshot mounted under .zfs, run the operation | |
6154 | * on the covered vnode. | |
6155 | */ | |
6156 | if (zp->z_id != zfsvfs->z_root || zfsvfs->z_parent == zfsvfs) { | |
6157 | char name[MAXNAMLEN + 1]; | |
6158 | znode_t *dzp; | |
6159 | size_t len; | |
6160 | ||
6161 | error = zfs_znode_parent_and_name(zp, &dzp, name); | |
6162 | if (error == 0) { | |
6163 | len = strlen(name); | |
6164 | if (*ap->a_buflen < len) | |
6165 | error = SET_ERROR(ENOMEM); | |
6166 | } | |
6167 | if (error == 0) { | |
6168 | *ap->a_buflen -= len; | |
861166b0 | 6169 | memcpy(ap->a_buf + *ap->a_buflen, name, len); |
9f0a21e6 MM |
6170 | *ap->a_vpp = ZTOV(dzp); |
6171 | } | |
768eaced | 6172 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
6173 | return (error); |
6174 | } | |
768eaced | 6175 | zfs_exit(zfsvfs, FTAG); |
9f0a21e6 MM |
6176 | |
6177 | covered_vp = vp->v_mount->mnt_vnodecovered; | |
6178 | #if __FreeBSD_version >= 1300045 | |
6179 | enum vgetstate vs = vget_prep(covered_vp); | |
6180 | #else | |
6181 | vhold(covered_vp); | |
6182 | #endif | |
6183 | ltype = VOP_ISLOCKED(vp); | |
6184 | VOP_UNLOCK1(vp); | |
6185 | #if __FreeBSD_version >= 1300045 | |
6186 | error = vget_finish(covered_vp, LK_SHARED, vs); | |
6187 | #else | |
6188 | error = vget(covered_vp, LK_SHARED | LK_VNHELD, curthread); | |
6189 | #endif | |
6190 | if (error == 0) { | |
01a65c58 MG |
6191 | #if __FreeBSD_version >= 1300123 |
6192 | error = VOP_VPTOCNP(covered_vp, ap->a_vpp, ap->a_buf, | |
6193 | ap->a_buflen); | |
6194 | #else | |
9f0a21e6 MM |
6195 | error = VOP_VPTOCNP(covered_vp, ap->a_vpp, ap->a_cred, |
6196 | ap->a_buf, ap->a_buflen); | |
01a65c58 | 6197 | #endif |
9f0a21e6 MM |
6198 | vput(covered_vp); |
6199 | } | |
6200 | vn_lock(vp, ltype | LK_RETRY); | |
6201 | if (VN_IS_DOOMED(vp)) | |
6202 | error = SET_ERROR(ENOENT); | |
6203 | return (error); | |
6204 | } | |
6205 | ||
f3bbeb97 KHN |
6206 | #if __FreeBSD_version >= 1400032 |
6207 | static int | |
6208 | zfs_deallocate(struct vop_deallocate_args *ap) | |
6209 | { | |
6210 | znode_t *zp = VTOZ(ap->a_vp); | |
6211 | zfsvfs_t *zfsvfs = zp->z_zfsvfs; | |
6212 | zilog_t *zilog; | |
6213 | off_t off, len, file_sz; | |
6214 | int error; | |
6215 | ||
768eaced CC |
6216 | if ((error = zfs_enter_verify_zp(zfsvfs, zp, FTAG)) != 0) |
6217 | return (error); | |
f3bbeb97 KHN |
6218 | |
6219 | /* | |
6220 | * Callers might not be able to detect properly that we are read-only, | |
6221 | * so check it explicitly here. | |
6222 | */ | |
6223 | if (zfs_is_readonly(zfsvfs)) { | |
768eaced | 6224 | zfs_exit(zfsvfs, FTAG); |
f3bbeb97 KHN |
6225 | return (SET_ERROR(EROFS)); |
6226 | } | |
6227 | ||
6228 | zilog = zfsvfs->z_log; | |
6229 | off = *ap->a_offset; | |
6230 | len = *ap->a_len; | |
6231 | file_sz = zp->z_size; | |
6232 | if (off + len > file_sz) | |
6233 | len = file_sz - off; | |
6234 | /* Fast path for out-of-range request. */ | |
6235 | if (len <= 0) { | |
6236 | *ap->a_len = 0; | |
768eaced | 6237 | zfs_exit(zfsvfs, FTAG); |
f3bbeb97 KHN |
6238 | return (0); |
6239 | } | |
6240 | ||
6241 | error = zfs_freesp(zp, off, len, O_RDWR, TRUE); | |
6242 | if (error == 0) { | |
6243 | if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS || | |
6244 | (ap->a_ioflag & IO_SYNC) != 0) | |
6245 | zil_commit(zilog, zp->z_id); | |
6246 | *ap->a_offset = off + len; | |
6247 | *ap->a_len = 0; | |
6248 | } | |
6249 | ||
768eaced | 6250 | zfs_exit(zfsvfs, FTAG); |
f3bbeb97 KHN |
6251 | return (error); |
6252 | } | |
6253 | #endif | |
6254 | ||
126efb58 | 6255 | #if __FreeBSD_version >= 1300039 |
67a1b037 PJD |
6256 | #ifndef _SYS_SYSPROTO_H_ |
6257 | struct vop_copy_file_range_args { | |
6258 | struct vnode *a_invp; | |
6259 | off_t *a_inoffp; | |
6260 | struct vnode *a_outvp; | |
6261 | off_t *a_outoffp; | |
6262 | size_t *a_lenp; | |
6263 | unsigned int a_flags; | |
6264 | struct ucred *a_incred; | |
6265 | struct ucred *a_outcred; | |
6266 | struct thread *a_fsizetd; | |
6267 | } | |
6268 | #endif | |
6269 | /* | |
6270 | * TODO: FreeBSD will only call file system-specific copy_file_range() if both | |
6271 | * files resides under the same mountpoint. In case of ZFS we want to be called | |
6272 | * even is files are in different datasets (but on the same pools, but we need | |
6273 | * to check that ourselves). | |
6274 | */ | |
6275 | static int | |
6276 | zfs_freebsd_copy_file_range(struct vop_copy_file_range_args *ap) | |
6277 | { | |
ff0e135e | 6278 | zfsvfs_t *outzfsvfs; |
67a1b037 PJD |
6279 | struct vnode *invp = ap->a_invp; |
6280 | struct vnode *outvp = ap->a_outvp; | |
6281 | struct mount *mp; | |
6282 | struct uio io; | |
6283 | int error; | |
a3f82aec | 6284 | uint64_t len = *ap->a_lenp; |
67a1b037 | 6285 | |
03e9caae RE |
6286 | if (!zfs_bclone_enabled) { |
6287 | mp = NULL; | |
6288 | goto bad_write_fallback; | |
6289 | } | |
6290 | ||
67a1b037 PJD |
6291 | /* |
6292 | * TODO: If offset/length is not aligned to recordsize, use | |
6293 | * vn_generic_copy_file_range() on this fragment. | |
6294 | * It would be better to do this after we lock the vnodes, but then we | |
6295 | * need something else than vn_generic_copy_file_range(). | |
6296 | */ | |
6297 | ||
a7982d5d | 6298 | vn_start_write(outvp, &mp, V_WAIT); |
ff0e135e MG |
6299 | if (__predict_true(mp == outvp->v_mount)) { |
6300 | outzfsvfs = (zfsvfs_t *)mp->mnt_data; | |
6301 | if (!spa_feature_is_enabled(dmu_objset_spa(outzfsvfs->z_os), | |
6302 | SPA_FEATURE_BLOCK_CLONING)) { | |
6303 | goto bad_write_fallback; | |
6304 | } | |
6305 | } | |
a7982d5d MG |
6306 | if (invp == outvp) { |
6307 | if (vn_lock(outvp, LK_EXCLUSIVE) != 0) { | |
6308 | goto bad_write_fallback; | |
67a1b037 | 6309 | } |
a7982d5d | 6310 | } else { |
736d5962 AM |
6311 | #if (__FreeBSD_version >= 1302506 && __FreeBSD_version < 1400000) || \ |
6312 | __FreeBSD_version >= 1400086 | |
a7982d5d MG |
6313 | vn_lock_pair(invp, false, LK_EXCLUSIVE, outvp, false, |
6314 | LK_EXCLUSIVE); | |
6315 | #else | |
6316 | vn_lock_pair(invp, false, outvp, false); | |
6317 | #endif | |
6318 | if (VN_IS_DOOMED(invp) || VN_IS_DOOMED(outvp)) { | |
6319 | goto bad_locked_fallback; | |
6320 | } | |
6321 | } | |
6322 | ||
67a1b037 PJD |
6323 | #ifdef MAC |
6324 | error = mac_vnode_check_write(curthread->td_ucred, ap->a_outcred, | |
6325 | outvp); | |
6326 | if (error != 0) | |
a7982d5d | 6327 | goto out_locked; |
67a1b037 PJD |
6328 | #endif |
6329 | ||
6330 | io.uio_offset = *ap->a_outoffp; | |
6331 | io.uio_resid = *ap->a_lenp; | |
6332 | error = vn_rlimit_fsize(outvp, &io, ap->a_fsizetd); | |
6333 | if (error != 0) | |
a7982d5d | 6334 | goto out_locked; |
67a1b037 PJD |
6335 | |
6336 | error = zfs_clone_range(VTOZ(invp), ap->a_inoffp, VTOZ(outvp), | |
a7982d5d | 6337 | ap->a_outoffp, &len, ap->a_outcred); |
cae502c1 RN |
6338 | if (error == EXDEV || error == EAGAIN || error == EINVAL || |
6339 | error == EOPNOTSUPP) | |
a7982d5d | 6340 | goto bad_locked_fallback; |
a3f82aec | 6341 | *ap->a_lenp = (size_t)len; |
a7982d5d | 6342 | out_locked: |
67a1b037 PJD |
6343 | if (invp != outvp) |
6344 | VOP_UNLOCK(invp); | |
6345 | VOP_UNLOCK(outvp); | |
6346 | if (mp != NULL) | |
6347 | vn_finished_write(mp); | |
a7982d5d | 6348 | return (error); |
67a1b037 | 6349 | |
a7982d5d MG |
6350 | bad_locked_fallback: |
6351 | if (invp != outvp) | |
6352 | VOP_UNLOCK(invp); | |
6353 | VOP_UNLOCK(outvp); | |
6354 | bad_write_fallback: | |
6355 | if (mp != NULL) | |
6356 | vn_finished_write(mp); | |
6357 | error = vn_generic_copy_file_range(ap->a_invp, ap->a_inoffp, | |
6358 | ap->a_outvp, ap->a_outoffp, ap->a_lenp, ap->a_flags, | |
6359 | ap->a_incred, ap->a_outcred, ap->a_fsizetd); | |
67a1b037 PJD |
6360 | return (error); |
6361 | } | |
126efb58 | 6362 | #endif |
67a1b037 | 6363 | |
9f0a21e6 MM |
6364 | struct vop_vector zfs_vnodeops; |
6365 | struct vop_vector zfs_fifoops; | |
6366 | struct vop_vector zfs_shareops; | |
6367 | ||
6368 | struct vop_vector zfs_vnodeops = { | |
6369 | .vop_default = &default_vnodeops, | |
6370 | .vop_inactive = zfs_freebsd_inactive, | |
6371 | #if __FreeBSD_version >= 1300042 | |
6372 | .vop_need_inactive = zfs_freebsd_need_inactive, | |
6373 | #endif | |
6374 | .vop_reclaim = zfs_freebsd_reclaim, | |
1b376d17 MM |
6375 | #if __FreeBSD_version >= 1300102 |
6376 | .vop_fplookup_vexec = zfs_freebsd_fplookup_vexec, | |
d8c09f3f MG |
6377 | #endif |
6378 | #if __FreeBSD_version >= 1300139 | |
6379 | .vop_fplookup_symlink = zfs_freebsd_fplookup_symlink, | |
1b376d17 | 6380 | #endif |
9f0a21e6 MM |
6381 | .vop_access = zfs_freebsd_access, |
6382 | .vop_allocate = VOP_EINVAL, | |
f3bbeb97 KHN |
6383 | #if __FreeBSD_version >= 1400032 |
6384 | .vop_deallocate = zfs_deallocate, | |
6385 | #endif | |
9f0a21e6 MM |
6386 | .vop_lookup = zfs_cache_lookup, |
6387 | .vop_cachedlookup = zfs_freebsd_cachedlookup, | |
6388 | .vop_getattr = zfs_freebsd_getattr, | |
6389 | .vop_setattr = zfs_freebsd_setattr, | |
6390 | .vop_create = zfs_freebsd_create, | |
6391 | .vop_mknod = (vop_mknod_t *)zfs_freebsd_create, | |
6392 | .vop_mkdir = zfs_freebsd_mkdir, | |
6393 | .vop_readdir = zfs_freebsd_readdir, | |
6394 | .vop_fsync = zfs_freebsd_fsync, | |
6395 | .vop_open = zfs_freebsd_open, | |
6396 | .vop_close = zfs_freebsd_close, | |
6397 | .vop_rmdir = zfs_freebsd_rmdir, | |
6398 | .vop_ioctl = zfs_freebsd_ioctl, | |
6399 | .vop_link = zfs_freebsd_link, | |
6400 | .vop_symlink = zfs_freebsd_symlink, | |
6401 | .vop_readlink = zfs_freebsd_readlink, | |
6402 | .vop_read = zfs_freebsd_read, | |
6403 | .vop_write = zfs_freebsd_write, | |
6404 | .vop_remove = zfs_freebsd_remove, | |
6405 | .vop_rename = zfs_freebsd_rename, | |
6406 | .vop_pathconf = zfs_freebsd_pathconf, | |
6407 | .vop_bmap = zfs_freebsd_bmap, | |
6408 | .vop_fid = zfs_freebsd_fid, | |
6409 | .vop_getextattr = zfs_getextattr, | |
6410 | .vop_deleteextattr = zfs_deleteextattr, | |
6411 | .vop_setextattr = zfs_setextattr, | |
6412 | .vop_listextattr = zfs_listextattr, | |
6413 | .vop_getacl = zfs_freebsd_getacl, | |
6414 | .vop_setacl = zfs_freebsd_setacl, | |
6415 | .vop_aclcheck = zfs_freebsd_aclcheck, | |
6416 | .vop_getpages = zfs_freebsd_getpages, | |
6417 | .vop_putpages = zfs_freebsd_putpages, | |
6418 | .vop_vptocnp = zfs_vptocnp, | |
6419 | #if __FreeBSD_version >= 1300064 | |
9f0a21e6 | 6420 | .vop_lock1 = vop_lock, |
9f0a21e6 MM |
6421 | .vop_unlock = vop_unlock, |
6422 | .vop_islocked = vop_islocked, | |
9f0a21e6 | 6423 | #endif |
23cee221 RM |
6424 | #if __FreeBSD_version >= 1400043 |
6425 | .vop_add_writecount = vop_stdadd_writecount_nomsync, | |
6426 | #endif | |
126efb58 | 6427 | #if __FreeBSD_version >= 1300039 |
67a1b037 | 6428 | .vop_copy_file_range = zfs_freebsd_copy_file_range, |
126efb58 | 6429 | #endif |
9f0a21e6 MM |
6430 | }; |
6431 | VFS_VOP_VECTOR_REGISTER(zfs_vnodeops); | |
6432 | ||
6433 | struct vop_vector zfs_fifoops = { | |
6434 | .vop_default = &fifo_specops, | |
6435 | .vop_fsync = zfs_freebsd_fsync, | |
1b376d17 MM |
6436 | #if __FreeBSD_version >= 1300102 |
6437 | .vop_fplookup_vexec = zfs_freebsd_fplookup_vexec, | |
d8c09f3f MG |
6438 | #endif |
6439 | #if __FreeBSD_version >= 1300139 | |
6440 | .vop_fplookup_symlink = zfs_freebsd_fplookup_symlink, | |
1b376d17 | 6441 | #endif |
9f0a21e6 MM |
6442 | .vop_access = zfs_freebsd_access, |
6443 | .vop_getattr = zfs_freebsd_getattr, | |
6444 | .vop_inactive = zfs_freebsd_inactive, | |
6445 | .vop_read = VOP_PANIC, | |
6446 | .vop_reclaim = zfs_freebsd_reclaim, | |
6447 | .vop_setattr = zfs_freebsd_setattr, | |
6448 | .vop_write = VOP_PANIC, | |
6449 | .vop_pathconf = zfs_freebsd_pathconf, | |
6450 | .vop_fid = zfs_freebsd_fid, | |
6451 | .vop_getacl = zfs_freebsd_getacl, | |
6452 | .vop_setacl = zfs_freebsd_setacl, | |
6453 | .vop_aclcheck = zfs_freebsd_aclcheck, | |
23cee221 RM |
6454 | #if __FreeBSD_version >= 1400043 |
6455 | .vop_add_writecount = vop_stdadd_writecount_nomsync, | |
6456 | #endif | |
9f0a21e6 MM |
6457 | }; |
6458 | VFS_VOP_VECTOR_REGISTER(zfs_fifoops); | |
6459 | ||
6460 | /* | |
6461 | * special share hidden files vnode operations template | |
6462 | */ | |
6463 | struct vop_vector zfs_shareops = { | |
6464 | .vop_default = &default_vnodeops, | |
41e2b3de MG |
6465 | #if __FreeBSD_version >= 1300121 |
6466 | .vop_fplookup_vexec = VOP_EAGAIN, | |
d8c09f3f MG |
6467 | #endif |
6468 | #if __FreeBSD_version >= 1300139 | |
6469 | .vop_fplookup_symlink = VOP_EAGAIN, | |
41e2b3de | 6470 | #endif |
9f0a21e6 MM |
6471 | .vop_access = zfs_freebsd_access, |
6472 | .vop_inactive = zfs_freebsd_inactive, | |
6473 | .vop_reclaim = zfs_freebsd_reclaim, | |
6474 | .vop_fid = zfs_freebsd_fid, | |
6475 | .vop_pathconf = zfs_freebsd_pathconf, | |
23cee221 RM |
6476 | #if __FreeBSD_version >= 1400043 |
6477 | .vop_add_writecount = vop_stdadd_writecount_nomsync, | |
6478 | #endif | |
9f0a21e6 MM |
6479 | }; |
6480 | VFS_VOP_VECTOR_REGISTER(zfs_shareops); | |
5c006134 RM |
6481 | |
6482 | ZFS_MODULE_PARAM(zfs, zfs_, xattr_compat, INT, ZMOD_RW, | |
6483 | "Use legacy ZFS xattr naming for writing new user namespace xattrs"); |