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.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
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]
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.
29 /* Portions Copyright 2007 Jeremy Teo */
30 /* Portions Copyright 2010 Robert Milkowski */
32 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/sysmacros.h>
36 #include <sys/resource.h>
37 #include <security/mac/mac_framework.h>
39 #include <sys/endian.h>
41 #include <sys/vnode.h>
42 #if __FreeBSD_version >= 1300102
45 #include <sys/dirent.h>
49 #include <sys/taskq.h>
51 #include <sys/atomic.h>
52 #include <sys/namei.h>
54 #include <sys/cmn_err.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>
63 #include <sys/dmu_objset.h>
69 #include <sys/policy.h>
70 #include <sys/sunddi.h>
71 #include <sys/filio.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>
80 #include <sys/sched.h>
82 #include <sys/vmmeter.h>
83 #include <vm/vm_param.h>
85 #include <sys/zfs_vnops.h>
86 #include <sys/module.h>
87 #include <sys/sysent.h>
88 #include <sys/dmu_impl.h>
90 #include <sys/zfeature.h>
92 #include <vm/vm_object.h>
94 #include <sys/extattr.h>
98 #define VN_OPEN_INVFS 0x0
103 #if __FreeBSD_version < 1300103
104 #define NDFREE_PNBUF(ndp) NDFREE((ndp), NDF_ONLY_PNBUF)
107 #if __FreeBSD_version >= 1300047
108 #define vm_page_wire_lock(pp)
109 #define vm_page_wire_unlock(pp)
111 #define vm_page_wire_lock(pp) vm_page_lock(pp)
112 #define vm_page_wire_unlock(pp) vm_page_unlock(pp)
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__));
120 #define VNCHECKREF(vp)
123 #if __FreeBSD_version >= 1400045
124 typedef uint64_t cookie_t
;
126 typedef ulong_t cookie_t
;
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:
140 * (1) A check must be made in each zfs thread for a mounted file system.
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
144 * can return EIO from the calling function.
146 * (2) VN_RELE() should always be the last thing except for zil_commit()
147 * (if necessary) and zfs_exit(). This is for 3 reasons:
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().
156 * (3) All range locks must be grabbed before calling dmu_tx_assign(),
157 * as they can span dmu_tx_assign() calls.
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.
163 * If no ZPL locks are held (aside from zfs_enter()), use TXG_WAIT. This
164 * reduces lock contention and CPU usage when we must wait (note that if
165 * throughput is constrained by the storage, nearly every transaction
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:
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.
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
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.
190 * (6) At the end of each vnode op, the DMU tx must always commit,
191 * regardless of whether there were any errors.
193 * (7) After dropping all locks, invoke zil_commit(zilog, foid)
194 * to ensure that synchronous semantics are provided when necessary.
196 * In general, this is how things should be ordered in each vnode op:
198 * zfs_enter(zfsvfs); // exit if unmounted
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);
206 * rw_exit(...); // drop locks
207 * zfs_dirent_unlock(dl); // unlock directory entry
208 * VN_RELE(...); // release held vnodes
209 * if (error == ERESTART) {
215 * dmu_tx_abort(tx); // abort DMU tx
216 * zfs_exit(zfsvfs); // finished in zfs
217 * return (error); // really out of space
219 * error = do_real_work(); // do whatever this VOP does
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
227 * zfs_exit(zfsvfs); // finished in zfs
228 * return (error); // done, report error
231 zfs_open(vnode_t
**vpp
, int flag
, cred_t
*cr
)
234 znode_t
*zp
= VTOZ(*vpp
);
235 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
238 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
241 if ((flag
& FWRITE
) && (zp
->z_pflags
& ZFS_APPENDONLY
) &&
242 ((flag
& FAPPEND
) == 0)) {
243 zfs_exit(zfsvfs
, FTAG
);
244 return (SET_ERROR(EPERM
));
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.
253 if (atomic_inc_32_nv(&zp
->z_sync_cnt
) == 1)
254 zil_async_to_sync(zfsvfs
->z_log
, zp
->z_id
);
257 zfs_exit(zfsvfs
, FTAG
);
262 zfs_close(vnode_t
*vp
, int flag
, int count
, offset_t offset
, cred_t
*cr
)
264 (void) offset
, (void) cr
;
265 znode_t
*zp
= VTOZ(vp
);
266 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
269 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
272 /* Decrement the synchronous opens in the znode */
273 if ((flag
& O_SYNC
) && (count
== 1))
274 atomic_dec_32(&zp
->z_sync_cnt
);
276 zfs_exit(zfsvfs
, FTAG
);
281 zfs_ioctl(vnode_t
*vp
, ulong_t com
, intptr_t data
, int flag
, cred_t
*cred
,
284 (void) flag
, (void) cred
, (void) rvalp
;
294 * The following two ioctls are used by bfu. Faking out,
295 * necessary to avoid bfu errors.
307 off
= *(offset_t
*)data
;
308 /* offset parameter is in/out */
309 error
= zfs_holey(VTOZ(vp
), com
, &off
);
312 *(offset_t
*)data
= off
;
316 return (SET_ERROR(ENOTTY
));
320 page_busy(vnode_t
*vp
, int64_t start
, int64_t off
, int64_t nbytes
)
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
331 * the whole page would be considered clean despite have some
333 * For this reason we should shrink the range to DEV_BSIZE aligned
334 * boundaries before calling vm_page_clear_dirty.
336 end
= rounddown2(off
+ nbytes
, DEV_BSIZE
);
337 off
= roundup2(off
, DEV_BSIZE
);
341 zfs_vmobject_assert_wlocked_12(obj
);
342 #if __FreeBSD_version < 1300050
344 if ((pp
= vm_page_lookup(obj
, OFF_TO_IDX(start
))) != NULL
&&
346 if (vm_page_xbusied(pp
)) {
348 * Reference the page before unlocking and
349 * sleeping so that the page daemon is less
350 * likely to reclaim it.
352 vm_page_reference(pp
);
354 zfs_vmobject_wunlock(obj
);
355 vm_page_busy_sleep(pp
, "zfsmwb", true);
356 zfs_vmobject_wlock(obj
);
360 } else if (pp
!= NULL
) {
365 ASSERT3U(pp
->valid
, ==, VM_PAGE_BITS_ALL
);
366 vm_object_pip_add(obj
, 1);
367 pmap_remove_write(pp
);
369 vm_page_clear_dirty(pp
, off
, nbytes
);
374 vm_page_grab_valid_unlocked(&pp
, obj
, OFF_TO_IDX(start
),
375 VM_ALLOC_NOCREAT
| VM_ALLOC_SBUSY
| VM_ALLOC_NORMAL
|
378 ASSERT3U(pp
->valid
, ==, VM_PAGE_BITS_ALL
);
379 vm_object_pip_add(obj
, 1);
380 pmap_remove_write(pp
);
382 vm_page_clear_dirty(pp
, off
, nbytes
);
389 page_unbusy(vm_page_t pp
)
393 #if __FreeBSD_version >= 1300041
394 vm_object_pip_wakeup(pp
->object
);
396 vm_object_pip_subtract(pp
->object
, 1);
400 #if __FreeBSD_version > 1300051
402 page_hold(vnode_t
*vp
, int64_t start
)
408 vm_page_grab_valid_unlocked(&m
, obj
, OFF_TO_IDX(start
),
409 VM_ALLOC_NOCREAT
| VM_ALLOC_WIRED
| VM_ALLOC_IGN_SBUSY
|
415 page_hold(vnode_t
*vp
, int64_t start
)
421 zfs_vmobject_assert_wlocked(obj
);
424 if ((pp
= vm_page_lookup(obj
, OFF_TO_IDX(start
))) != NULL
&&
426 if (vm_page_xbusied(pp
)) {
428 * Reference the page before unlocking and
429 * sleeping so that the page daemon is less
430 * likely to reclaim it.
432 vm_page_reference(pp
);
434 zfs_vmobject_wunlock(obj
);
435 vm_page_busy_sleep(pp
, "zfsmwb", true);
436 zfs_vmobject_wlock(obj
);
440 ASSERT3U(pp
->valid
, ==, VM_PAGE_BITS_ALL
);
441 vm_page_wire_lock(pp
);
443 vm_page_wire_unlock(pp
);
454 page_unhold(vm_page_t pp
)
457 vm_page_wire_lock(pp
);
458 #if __FreeBSD_version >= 1300035
459 vm_page_unwire(pp
, PQ_ACTIVE
);
463 vm_page_wire_unlock(pp
);
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:
470 * On Write: If we find a memory mapped page, we write to *both*
471 * the page and the dmu buffer.
474 update_pages(znode_t
*zp
, int64_t start
, int len
, objset_t
*os
)
478 vnode_t
*vp
= ZTOV(zp
);
482 ASSERT3P(vp
->v_mount
, !=, NULL
);
484 ASSERT3P(obj
, !=, NULL
);
486 off
= start
& PAGEOFFSET
;
487 zfs_vmobject_wlock_12(obj
);
488 #if __FreeBSD_version >= 1300041
489 vm_object_pip_add(obj
, 1);
491 for (start
&= PAGEMASK
; len
> 0; start
+= PAGESIZE
) {
493 int nbytes
= imin(PAGESIZE
- off
, len
);
495 if ((pp
= page_busy(vp
, start
, off
, nbytes
)) != NULL
) {
496 zfs_vmobject_wunlock_12(obj
);
498 va
= zfs_map_page(pp
, &sf
);
499 (void) dmu_read(os
, zp
->z_id
, start
+ off
, nbytes
,
500 va
+ off
, DMU_READ_PREFETCH
);
503 zfs_vmobject_wlock_12(obj
);
509 #if __FreeBSD_version >= 1300041
510 vm_object_pip_wakeup(obj
);
512 vm_object_pip_wakeupn(obj
, 0);
514 zfs_vmobject_wunlock_12(obj
);
518 * Read with UIO_NOCOPY flag means that sendfile(2) requests
519 * ZFS to populate a range of page cache pages with data.
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.
527 mappedread_sf(znode_t
*zp
, int nbytes
, zfs_uio_t
*uio
)
529 vnode_t
*vp
= ZTOV(zp
);
530 objset_t
*os
= zp
->z_zfsvfs
->z_os
;
539 ASSERT3U(zfs_uio_segflg(uio
), ==, UIO_NOCOPY
);
540 ASSERT3P(vp
->v_mount
, !=, NULL
);
542 ASSERT3P(obj
, !=, NULL
);
543 ASSERT0(zfs_uio_offset(uio
) & PAGEOFFSET
);
545 zfs_vmobject_wlock_12(obj
);
546 for (start
= zfs_uio_offset(uio
); len
> 0; start
+= PAGESIZE
) {
547 int bytes
= MIN(PAGESIZE
, len
);
549 pp
= vm_page_grab_unlocked(obj
, OFF_TO_IDX(start
),
550 VM_ALLOC_SBUSY
| VM_ALLOC_NORMAL
| VM_ALLOC_IGN_SBUSY
);
551 if (vm_page_none_valid(pp
)) {
552 zfs_vmobject_wunlock_12(obj
);
553 va
= zfs_map_page(pp
, &sf
);
554 error
= dmu_read(os
, zp
->z_id
, start
, bytes
, va
,
556 if (bytes
!= PAGESIZE
&& error
== 0)
557 memset(va
+ bytes
, 0, PAGESIZE
- bytes
);
559 zfs_vmobject_wlock_12(obj
);
560 #if __FreeBSD_version >= 1300081
563 vm_page_activate(pp
);
564 vm_page_do_sunbusy(pp
);
566 zfs_vmobject_wlock(obj
);
567 if (!vm_page_wired(pp
) && pp
->valid
== 0 &&
568 vm_page_busy_tryupgrade(pp
))
572 zfs_vmobject_wunlock(obj
);
575 vm_page_do_sunbusy(pp
);
578 if (pp
->wire_count
== 0 && pp
->valid
== 0 &&
582 pp
->valid
= VM_PAGE_BITS_ALL
;
583 vm_page_activate(pp
);
588 ASSERT3U(pp
->valid
, ==, VM_PAGE_BITS_ALL
);
589 vm_page_do_sunbusy(pp
);
593 zfs_uio_advance(uio
, bytes
);
596 zfs_vmobject_wunlock_12(obj
);
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:
604 * On Read: We "read" preferentially from memory mapped pages,
605 * else we default from the dmu buffer.
607 * NOTE: We will always "break up" the IO into PAGESIZE uiomoves when
608 * the file is memory mapped.
611 mappedread(znode_t
*zp
, int nbytes
, zfs_uio_t
*uio
)
613 vnode_t
*vp
= ZTOV(zp
);
620 ASSERT3P(vp
->v_mount
, !=, NULL
);
622 ASSERT3P(obj
, !=, NULL
);
624 start
= zfs_uio_offset(uio
);
625 off
= start
& PAGEOFFSET
;
626 zfs_vmobject_wlock_12(obj
);
627 for (start
&= PAGEMASK
; len
> 0; start
+= PAGESIZE
) {
629 uint64_t bytes
= MIN(PAGESIZE
- off
, len
);
631 if ((pp
= page_hold(vp
, start
))) {
635 zfs_vmobject_wunlock_12(obj
);
636 va
= zfs_map_page(pp
, &sf
);
637 error
= vn_io_fault_uiomove(va
+ off
, bytes
,
638 GET_UIO_STRUCT(uio
));
640 zfs_vmobject_wlock_12(obj
);
643 zfs_vmobject_wunlock_12(obj
);
644 error
= dmu_read_uio_dbuf(sa_get_db(zp
->z_sa_hdl
),
646 zfs_vmobject_wlock_12(obj
);
653 zfs_vmobject_wunlock_12(obj
);
658 zfs_write_simple(znode_t
*zp
, const void *data
, size_t len
,
659 loff_t pos
, size_t *presid
)
664 error
= vn_rdwr(UIO_WRITE
, ZTOV(zp
), __DECONST(void *, data
), len
, pos
,
665 UIO_SYSSPACE
, IO_SYNC
, kcred
, NOCRED
, &resid
, curthread
);
668 return (SET_ERROR(error
));
669 } else if (presid
== NULL
) {
671 error
= SET_ERROR(EIO
);
680 zfs_zrele_async(znode_t
*zp
)
682 vnode_t
*vp
= ZTOV(zp
);
683 objset_t
*os
= ITOZSB(vp
)->z_os
;
685 VN_RELE_ASYNC(vp
, dsl_pool_zrele_taskq(dmu_objset_pool(os
)));
689 zfs_dd_callback(struct mount
*mp
, void *arg
, int lkflags
, struct vnode
**vpp
)
694 error
= vn_lock(*vpp
, lkflags
);
701 zfs_lookup_lock(vnode_t
*dvp
, vnode_t
*vp
, const char *name
, int lkflags
)
703 znode_t
*zdp
= VTOZ(dvp
);
704 zfsvfs_t
*zfsvfs __unused
= zdp
->z_zfsvfs
;
708 if (zfsvfs
->z_replay
== B_FALSE
)
709 ASSERT_VOP_LOCKED(dvp
, __func__
);
711 if (name
[0] == 0 || (name
[0] == '.' && name
[1] == 0)) {
712 ASSERT3P(dvp
, ==, vp
);
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
);
722 * Relock for the "." case could leave us with
725 if (VN_IS_DOOMED(dvp
)) {
727 return (SET_ERROR(ENOENT
));
731 } else if (name
[0] == '.' && name
[1] == '.' && name
[2] == 0) {
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.
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
746 * A potential solution could be implemented as follows:
747 * - using LK_NOWAIT when locking the second vnode and retrying
749 * - checking that the parent-child relationship still holds
750 * after locking both vnodes and retrying if it doesn't
752 error
= vn_vget_ino_gen(dvp
, zfs_dd_callback
, vp
, lkflags
, &vp
);
755 error
= vn_lock(vp
, lkflags
);
763 * Lookup an entry in a directory, or an extended attribute directory.
764 * If it exists, return a held vnode reference for it.
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
774 * OUT: vpp - vnode of located entry, NULL if not found.
776 * RETURN: 0 on success, error code on failure.
782 zfs_lookup(vnode_t
*dvp
, const char *nm
, vnode_t
**vpp
,
783 struct componentname
*cnp
, int nameiop
, cred_t
*cr
, int flags
,
786 znode_t
*zdp
= VTOZ(dvp
);
788 zfsvfs_t
*zfsvfs
= zdp
->z_zfsvfs
;
789 #if __FreeBSD_version > 1300124
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.
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
));
811 DTRACE_PROBE2(zfs__fastpath__lookup__miss
, vnode_t
*, dvp
,
814 if ((error
= zfs_enter_verify_zp(zfsvfs
, zdp
, FTAG
)) != 0)
817 #if __FreeBSD_version > 1300124
818 dvp_seqc
= vn_seqc_read_notmodify(dvp
);
823 if (flags
& LOOKUP_XATTR
) {
825 * If the xattr property is off, refuse the lookup request.
827 if (!(zfsvfs
->z_flags
& ZSB_XATTR
)) {
828 zfs_exit(zfsvfs
, FTAG
);
829 return (SET_ERROR(EOPNOTSUPP
));
833 * We don't allow recursive attributes..
834 * Maybe someday we will.
836 if (zdp
->z_pflags
& ZFS_XATTR
) {
837 zfs_exit(zfsvfs
, FTAG
);
838 return (SET_ERROR(EINVAL
));
841 if ((error
= zfs_get_xattrdir(VTOZ(dvp
), &zp
, cr
, flags
))) {
842 zfs_exit(zfsvfs
, FTAG
);
848 * Do we have permission to get into attribute directory?
850 error
= zfs_zaccess(zp
, ACE_EXECUTE
, 0, B_FALSE
, cr
, NULL
);
855 zfs_exit(zfsvfs
, FTAG
);
860 * Check accessibility of directory if we're not coming in via
865 if ((cnp
->cn_flags
& NOEXECCHECK
) != 0) {
866 cnp
->cn_flags
&= ~NOEXECCHECK
;
869 if ((error
= zfs_zaccess(zdp
, ACE_EXECUTE
, 0, B_FALSE
, cr
,
871 zfs_exit(zfsvfs
, FTAG
);
876 if (zfsvfs
->z_utf8
&& u8_validate(nm
, strlen(nm
),
877 NULL
, U8_VALIDATE_ENTIRE
, &error
) < 0) {
878 zfs_exit(zfsvfs
, FTAG
);
879 return (SET_ERROR(EILSEQ
));
884 * First handle the special cases.
886 if ((cnp
->cn_flags
& ISDOTDOT
) != 0) {
888 * If we are a snapshot mounted under .zfs, return
889 * the vp for the snapshot directory.
891 if (zdp
->z_id
== zfsvfs
->z_root
&& zfsvfs
->z_parent
!= zfsvfs
) {
892 struct componentname cn
;
896 zfs_exit(zfsvfs
, FTAG
);
897 ltype
= VOP_ISLOCKED(dvp
);
899 error
= zfsctl_root(zfsvfs
->z_parent
, LK_SHARED
,
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
);
910 vn_lock(dvp
, ltype
| LK_RETRY
);
914 if (zfs_has_ctldir(zdp
) && strcmp(nm
, ZFS_CTLDIR_NAME
) == 0) {
915 zfs_exit(zfsvfs
, FTAG
);
916 if ((cnp
->cn_flags
& ISLASTCN
) != 0 && nameiop
!= LOOKUP
)
917 return (SET_ERROR(ENOTSUP
));
918 error
= zfsctl_root(zfsvfs
, cnp
->cn_lkflags
, vpp
);
923 * The loop is retry the lookup if the parent-child relationship
924 * changes during the dot-dot locking complexities.
929 error
= zfs_dirlook(zdp
, nm
, &zp
);
933 zfs_exit(zfsvfs
, FTAG
);
937 error
= zfs_lookup_lock(dvp
, *vpp
, nm
, cnp
->cn_lkflags
);
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.
948 if ((cnp
->cn_flags
& ISDOTDOT
) == 0)
951 if ((error
= zfs_enter(zfsvfs
, FTAG
)) != 0) {
956 if (zdp
->z_sa_hdl
== NULL
) {
957 error
= SET_ERROR(EIO
);
959 error
= sa_lookup(zdp
->z_sa_hdl
, SA_ZPL_PARENT(zfsvfs
),
960 &parent
, sizeof (parent
));
963 zfs_exit(zfsvfs
, FTAG
);
967 if (zp
->z_id
== parent
) {
968 zfs_exit(zfsvfs
, FTAG
);
977 /* Translate errors and add SAVENAME when needed. */
978 if (cnp
->cn_flags
& ISLASTCN
) {
982 if (error
== ENOENT
) {
984 #if __FreeBSD_version < 1400068
985 cnp
->cn_flags
|= SAVENAME
;
991 #if __FreeBSD_version < 1400068
993 cnp
->cn_flags
|= SAVENAME
;
999 #if __FreeBSD_version > 1300124
1000 if ((cnp
->cn_flags
& ISDOTDOT
) != 0) {
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.
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.
1011 * Ultimately let an entry through once everything settles.
1013 if (!vn_seqc_consistent(dvp
, dvp_seqc
)) {
1014 cnp
->cn_flags
&= ~MAKEENTRY
;
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
);
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
);
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.
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
1050 * mnt_ns - Unused on FreeBSD
1052 * OUT: vpp - vnode of created or trunc'd entry.
1054 * RETURN: 0 on success, error code on failure.
1057 * dvp - ctime|mtime updated if new entry created
1058 * vp - ctime|mtime always, atime if new
1061 zfs_create(znode_t
*dzp
, const char *name
, vattr_t
*vap
, int excl
, int mode
,
1062 znode_t
**zpp
, cred_t
*cr
, int flag
, vsecattr_t
*vsecp
, zidmap_t
*mnt_ns
)
1064 (void) excl
, (void) mode
, (void) flag
;
1066 zfsvfs_t
*zfsvfs
= dzp
->z_zfsvfs
;
1071 uid_t uid
= crgetuid(cr
);
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
;
1077 #ifdef DEBUG_VFS_LOCKS
1078 vnode_t
*dvp
= ZTOV(dzp
);
1082 * If we have an ephemeral id, ACL, or XVATTR then
1083 * make sure file system is at proper version
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
));
1090 if ((error
= zfs_enter_verify_zp(zfsvfs
, dzp
, FTAG
)) != 0)
1093 zilog
= zfsvfs
->z_log
;
1095 if (zfsvfs
->z_utf8
&& u8_validate(name
, strlen(name
),
1096 NULL
, U8_VALIDATE_ENTIRE
, &error
) < 0) {
1097 zfs_exit(zfsvfs
, FTAG
);
1098 return (SET_ERROR(EILSEQ
));
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) {
1104 zfs_exit(zfsvfs
, FTAG
);
1111 if ((vap
->va_mode
& S_ISVTX
) && secpolicy_vnode_stky_modify(cr
))
1112 vap
->va_mode
&= ~S_ISVTX
;
1114 error
= zfs_dirent_lookup(dzp
, name
, &zp
, ZNEW
);
1116 zfs_exit(zfsvfs
, FTAG
);
1119 ASSERT3P(zp
, ==, NULL
);
1122 * Create a new file object and update the directory
1125 if ((error
= zfs_zaccess(dzp
, ACE_ADD_FILE
, 0, B_FALSE
, cr
, mnt_ns
))) {
1130 * We only support the creation of regular files in
1131 * extended attribute directories.
1134 if ((dzp
->z_pflags
& ZFS_XATTR
) &&
1135 (vap
->va_type
!= VREG
)) {
1136 error
= SET_ERROR(EINVAL
);
1140 if ((error
= zfs_acl_ids_create(dzp
, 0, vap
,
1141 cr
, vsecp
, &acl_ids
, NULL
)) != 0)
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
);
1152 getnewvnode_reserve_();
1154 tx
= dmu_tx_create(os
);
1156 dmu_tx_hold_sa_create(tx
, acl_ids
.z_aclp
->z_acl_bytes
+
1157 ZFS_SA_BASE_ATTR_SIZE
);
1159 fuid_dirtied
= zfsvfs
->z_fuid_dirty
;
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
);
1169 error
= dmu_tx_assign(tx
, TXG_WAIT
);
1171 zfs_acl_ids_free(&acl_ids
);
1173 getnewvnode_drop_reserve();
1174 zfs_exit(zfsvfs
, FTAG
);
1177 zfs_mknode(dzp
, vap
, tx
, cr
, 0, &zp
, &acl_ids
);
1179 zfs_fuid_sync(zfsvfs
, tx
);
1181 (void) zfs_link_create(dzp
, name
, zp
, tx
, ZNEW
);
1182 txtype
= zfs_log_create_txtype(Z_FILE
, vsecp
, vap
);
1183 zfs_log_create(zilog
, tx
, txtype
, dzp
, zp
, name
,
1184 vsecp
, acl_ids
.z_fuidp
, vap
);
1185 zfs_acl_ids_free(&acl_ids
);
1188 getnewvnode_drop_reserve();
1196 if (zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
)
1197 zil_commit(zilog
, 0);
1199 zfs_exit(zfsvfs
, FTAG
);
1204 * Remove an entry from a directory.
1206 * IN: dvp - vnode of directory to remove entry from.
1207 * name - name of entry to remove.
1208 * cr - credentials of caller.
1209 * ct - caller context
1210 * flags - case flags
1212 * RETURN: 0 on success, error code on failure.
1216 * vp - ctime (if nlink > 0)
1219 zfs_remove_(vnode_t
*dvp
, vnode_t
*vp
, const char *name
, cred_t
*cr
)
1221 znode_t
*dzp
= VTOZ(dvp
);
1224 zfsvfs_t
*zfsvfs
= dzp
->z_zfsvfs
;
1234 if ((error
= zfs_enter_verify_zp(zfsvfs
, dzp
, FTAG
)) != 0)
1237 if ((error
= zfs_verify_zp(zp
)) != 0) {
1238 zfs_exit(zfsvfs
, FTAG
);
1241 zilog
= zfsvfs
->z_log
;
1246 if ((error
= zfs_zaccess_delete(dzp
, zp
, cr
, NULL
))) {
1251 * Need to use rmdir for removing directories.
1253 if (vp
->v_type
== VDIR
) {
1254 error
= SET_ERROR(EPERM
);
1258 vnevent_remove(vp
, dvp
, name
, ct
);
1262 /* are there any extended attributes? */
1263 error
= sa_lookup(zp
->z_sa_hdl
, SA_ZPL_XATTR(zfsvfs
),
1264 &xattr_obj
, sizeof (xattr_obj
));
1265 if (error
== 0 && xattr_obj
) {
1266 error
= zfs_zget(zfsvfs
, xattr_obj
, &xzp
);
1271 * We may delete the znode now, or we may put it in the unlinked set;
1272 * it depends on whether we're the last link, and on whether there are
1273 * other holds on the vnode. So we dmu_tx_hold() the right things to
1274 * allow for either case.
1276 tx
= dmu_tx_create(zfsvfs
->z_os
);
1277 dmu_tx_hold_zap(tx
, dzp
->z_id
, FALSE
, name
);
1278 dmu_tx_hold_sa(tx
, zp
->z_sa_hdl
, B_FALSE
);
1279 zfs_sa_upgrade_txholds(tx
, zp
);
1280 zfs_sa_upgrade_txholds(tx
, dzp
);
1283 dmu_tx_hold_sa(tx
, zp
->z_sa_hdl
, B_TRUE
);
1284 dmu_tx_hold_sa(tx
, xzp
->z_sa_hdl
, B_FALSE
);
1287 /* charge as an update -- would be nice not to charge at all */
1288 dmu_tx_hold_zap(tx
, zfsvfs
->z_unlinkedobj
, FALSE
, NULL
);
1291 * Mark this transaction as typically resulting in a net free of space
1293 dmu_tx_mark_netfree(tx
);
1295 error
= dmu_tx_assign(tx
, TXG_WAIT
);
1298 zfs_exit(zfsvfs
, FTAG
);
1303 * Remove the directory entry.
1305 error
= zfs_link_destroy(dzp
, name
, zp
, tx
, ZEXISTS
, &unlinked
);
1313 zfs_unlinked_add(zp
, tx
);
1314 vp
->v_vflag
|= VV_NOSYNC
;
1316 /* XXX check changes to linux vnops */
1318 zfs_log_remove(zilog
, tx
, txtype
, dzp
, name
, obj
, unlinked
);
1326 if (zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
)
1327 zil_commit(zilog
, 0);
1330 zfs_exit(zfsvfs
, FTAG
);
1336 zfs_lookup_internal(znode_t
*dzp
, const char *name
, vnode_t
**vpp
,
1337 struct componentname
*cnp
, int nameiop
)
1339 zfsvfs_t
*zfsvfs
= dzp
->z_zfsvfs
;
1342 cnp
->cn_nameptr
= __DECONST(char *, name
);
1343 cnp
->cn_namelen
= strlen(name
);
1344 cnp
->cn_nameiop
= nameiop
;
1345 cnp
->cn_flags
= ISLASTCN
;
1346 #if __FreeBSD_version < 1400068
1347 cnp
->cn_flags
|= SAVENAME
;
1349 cnp
->cn_lkflags
= LK_EXCLUSIVE
| LK_RETRY
;
1350 cnp
->cn_cred
= kcred
;
1351 #if __FreeBSD_version < 1400037
1352 cnp
->cn_thread
= curthread
;
1355 if (zfsvfs
->z_use_namecache
&& !zfsvfs
->z_replay
) {
1356 struct vop_lookup_args a
;
1358 a
.a_gen
.a_desc
= &vop_lookup_desc
;
1359 a
.a_dvp
= ZTOV(dzp
);
1362 error
= vfs_cache_lookup(&a
);
1364 error
= zfs_lookup(ZTOV(dzp
), name
, vpp
, cnp
, nameiop
, kcred
, 0,
1369 printf("got error %d on name %s on op %d\n", error
, name
,
1378 zfs_remove(znode_t
*dzp
, const char *name
, cred_t
*cr
, int flags
)
1382 struct componentname cn
;
1384 if ((error
= zfs_lookup_internal(dzp
, name
, &vp
, &cn
, DELETE
)))
1387 error
= zfs_remove_(ZTOV(dzp
), vp
, name
, cr
);
1392 * Create a new directory and insert it into dvp using the name
1393 * provided. Return a pointer to the inserted directory.
1395 * IN: dvp - vnode of directory to add subdir to.
1396 * dirname - name of new directory.
1397 * vap - attributes of new directory.
1398 * cr - credentials of caller.
1399 * ct - caller context
1400 * flags - case flags
1401 * vsecp - ACL to be set
1402 * mnt_ns - Unused on FreeBSD
1404 * OUT: vpp - vnode of created directory.
1406 * RETURN: 0 on success, error code on failure.
1409 * dvp - ctime|mtime updated
1410 * vp - ctime|mtime|atime updated
1413 zfs_mkdir(znode_t
*dzp
, const char *dirname
, vattr_t
*vap
, znode_t
**zpp
,
1414 cred_t
*cr
, int flags
, vsecattr_t
*vsecp
, zidmap_t
*mnt_ns
)
1416 (void) flags
, (void) vsecp
;
1418 zfsvfs_t
*zfsvfs
= dzp
->z_zfsvfs
;
1423 uid_t uid
= crgetuid(cr
);
1424 gid_t gid
= crgetgid(cr
);
1425 zfs_acl_ids_t acl_ids
;
1426 boolean_t fuid_dirtied
;
1428 ASSERT3U(vap
->va_type
, ==, VDIR
);
1431 * If we have an ephemeral id, ACL, or XVATTR then
1432 * make sure file system is at proper version
1434 if (zfsvfs
->z_use_fuids
== B_FALSE
&&
1435 ((vap
->va_mask
& AT_XVATTR
) ||
1436 IS_EPHEMERAL(uid
) || IS_EPHEMERAL(gid
)))
1437 return (SET_ERROR(EINVAL
));
1439 if ((error
= zfs_enter_verify_zp(zfsvfs
, dzp
, FTAG
)) != 0)
1441 zilog
= zfsvfs
->z_log
;
1443 if (dzp
->z_pflags
& ZFS_XATTR
) {
1444 zfs_exit(zfsvfs
, FTAG
);
1445 return (SET_ERROR(EINVAL
));
1448 if (zfsvfs
->z_utf8
&& u8_validate(dirname
,
1449 strlen(dirname
), NULL
, U8_VALIDATE_ENTIRE
, &error
) < 0) {
1450 zfs_exit(zfsvfs
, FTAG
);
1451 return (SET_ERROR(EILSEQ
));
1454 if (vap
->va_mask
& AT_XVATTR
) {
1455 if ((error
= secpolicy_xvattr(ZTOV(dzp
), (xvattr_t
*)vap
,
1456 crgetuid(cr
), cr
, vap
->va_type
)) != 0) {
1457 zfs_exit(zfsvfs
, FTAG
);
1462 if ((error
= zfs_acl_ids_create(dzp
, 0, vap
, cr
,
1463 NULL
, &acl_ids
, NULL
)) != 0) {
1464 zfs_exit(zfsvfs
, FTAG
);
1469 * First make sure the new directory doesn't exist.
1471 * Existence is checked first to make sure we don't return
1472 * EACCES instead of EEXIST which can cause some applications
1477 if ((error
= zfs_dirent_lookup(dzp
, dirname
, &zp
, ZNEW
))) {
1478 zfs_acl_ids_free(&acl_ids
);
1479 zfs_exit(zfsvfs
, FTAG
);
1482 ASSERT3P(zp
, ==, NULL
);
1484 if ((error
= zfs_zaccess(dzp
, ACE_ADD_SUBDIRECTORY
, 0, B_FALSE
, cr
,
1486 zfs_acl_ids_free(&acl_ids
);
1487 zfs_exit(zfsvfs
, FTAG
);
1491 if (zfs_acl_ids_overquota(zfsvfs
, &acl_ids
, zfs_inherit_projid(dzp
))) {
1492 zfs_acl_ids_free(&acl_ids
);
1493 zfs_exit(zfsvfs
, FTAG
);
1494 return (SET_ERROR(EDQUOT
));
1498 * Add a new entry to the directory.
1500 getnewvnode_reserve_();
1501 tx
= dmu_tx_create(zfsvfs
->z_os
);
1502 dmu_tx_hold_zap(tx
, dzp
->z_id
, TRUE
, dirname
);
1503 dmu_tx_hold_zap(tx
, DMU_NEW_OBJECT
, FALSE
, NULL
);
1504 fuid_dirtied
= zfsvfs
->z_fuid_dirty
;
1506 zfs_fuid_txhold(zfsvfs
, tx
);
1507 if (!zfsvfs
->z_use_sa
&& acl_ids
.z_aclp
->z_acl_bytes
> ZFS_ACE_SPACE
) {
1508 dmu_tx_hold_write(tx
, DMU_NEW_OBJECT
, 0,
1509 acl_ids
.z_aclp
->z_acl_bytes
);
1512 dmu_tx_hold_sa_create(tx
, acl_ids
.z_aclp
->z_acl_bytes
+
1513 ZFS_SA_BASE_ATTR_SIZE
);
1515 error
= dmu_tx_assign(tx
, TXG_WAIT
);
1517 zfs_acl_ids_free(&acl_ids
);
1519 getnewvnode_drop_reserve();
1520 zfs_exit(zfsvfs
, FTAG
);
1527 zfs_mknode(dzp
, vap
, tx
, cr
, 0, &zp
, &acl_ids
);
1530 zfs_fuid_sync(zfsvfs
, tx
);
1533 * Now put new name in parent dir.
1535 (void) zfs_link_create(dzp
, dirname
, zp
, tx
, ZNEW
);
1539 txtype
= zfs_log_create_txtype(Z_DIR
, NULL
, vap
);
1540 zfs_log_create(zilog
, tx
, txtype
, dzp
, zp
, dirname
, NULL
,
1541 acl_ids
.z_fuidp
, vap
);
1543 zfs_acl_ids_free(&acl_ids
);
1547 getnewvnode_drop_reserve();
1549 if (zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
)
1550 zil_commit(zilog
, 0);
1552 zfs_exit(zfsvfs
, FTAG
);
1556 #if __FreeBSD_version < 1300124
1558 cache_vop_rmdir(struct vnode
*dvp
, struct vnode
*vp
)
1567 * Remove a directory subdir entry. If the current working
1568 * directory is the same as the subdir to be removed, the
1571 * IN: dvp - vnode of directory to remove from.
1572 * name - name of directory to be removed.
1573 * cwd - vnode of current working directory.
1574 * cr - credentials of caller.
1575 * ct - caller context
1576 * flags - case flags
1578 * RETURN: 0 on success, error code on failure.
1581 * dvp - ctime|mtime updated
1584 zfs_rmdir_(vnode_t
*dvp
, vnode_t
*vp
, const char *name
, cred_t
*cr
)
1586 znode_t
*dzp
= VTOZ(dvp
);
1587 znode_t
*zp
= VTOZ(vp
);
1588 zfsvfs_t
*zfsvfs
= dzp
->z_zfsvfs
;
1593 if ((error
= zfs_enter_verify_zp(zfsvfs
, dzp
, FTAG
)) != 0)
1595 if ((error
= zfs_verify_zp(zp
)) != 0) {
1596 zfs_exit(zfsvfs
, FTAG
);
1599 zilog
= zfsvfs
->z_log
;
1602 if ((error
= zfs_zaccess_delete(dzp
, zp
, cr
, NULL
))) {
1606 if (vp
->v_type
!= VDIR
) {
1607 error
= SET_ERROR(ENOTDIR
);
1611 vnevent_rmdir(vp
, dvp
, name
, ct
);
1613 tx
= dmu_tx_create(zfsvfs
->z_os
);
1614 dmu_tx_hold_zap(tx
, dzp
->z_id
, FALSE
, name
);
1615 dmu_tx_hold_sa(tx
, zp
->z_sa_hdl
, B_FALSE
);
1616 dmu_tx_hold_zap(tx
, zfsvfs
->z_unlinkedobj
, FALSE
, NULL
);
1617 zfs_sa_upgrade_txholds(tx
, zp
);
1618 zfs_sa_upgrade_txholds(tx
, dzp
);
1619 dmu_tx_mark_netfree(tx
);
1620 error
= dmu_tx_assign(tx
, TXG_WAIT
);
1623 zfs_exit(zfsvfs
, FTAG
);
1627 error
= zfs_link_destroy(dzp
, name
, zp
, tx
, ZEXISTS
, NULL
);
1630 uint64_t txtype
= TX_RMDIR
;
1631 zfs_log_remove(zilog
, tx
, txtype
, dzp
, name
,
1632 ZFS_NO_OBJECT
, B_FALSE
);
1637 if (zfsvfs
->z_use_namecache
)
1638 cache_vop_rmdir(dvp
, vp
);
1640 if (zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
)
1641 zil_commit(zilog
, 0);
1643 zfs_exit(zfsvfs
, FTAG
);
1648 zfs_rmdir(znode_t
*dzp
, const char *name
, znode_t
*cwd
, cred_t
*cr
, int flags
)
1650 struct componentname cn
;
1654 if ((error
= zfs_lookup_internal(dzp
, name
, &vp
, &cn
, DELETE
)))
1657 error
= zfs_rmdir_(ZTOV(dzp
), vp
, name
, cr
);
1663 * Read as many directory entries as will fit into the provided
1664 * buffer from the given directory cursor position (specified in
1665 * the uio structure).
1667 * IN: vp - vnode of directory to read.
1668 * uio - structure supplying read location, range info,
1669 * and return buffer.
1670 * cr - credentials of caller.
1671 * ct - caller context
1673 * OUT: uio - updated offset and range, buffer filled.
1674 * eofp - set to true if end-of-file detected.
1675 * ncookies- number of entries in cookies
1676 * cookies - offsets to directory entries
1678 * RETURN: 0 on success, error code on failure.
1681 * vp - atime updated
1683 * Note that the low 4 bits of the cookie returned by zap is always zero.
1684 * This allows us to use the low range for "special" directory entries:
1685 * We use 0 for '.', and 1 for '..'. If this is the root of the filesystem,
1686 * we use the offset 2 for the '.zfs' directory.
1689 zfs_readdir(vnode_t
*vp
, zfs_uio_t
*uio
, cred_t
*cr
, int *eofp
,
1690 int *ncookies
, cookie_t
**cookies
)
1692 znode_t
*zp
= VTOZ(vp
);
1695 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
1700 zap_attribute_t zap
;
1701 uint_t bytes_wanted
;
1702 uint64_t offset
; /* must be unsigned; checks for < 1 */
1710 cookie_t
*cooks
= NULL
;
1712 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
1715 if ((error
= sa_lookup(zp
->z_sa_hdl
, SA_ZPL_PARENT(zfsvfs
),
1716 &parent
, sizeof (parent
))) != 0) {
1717 zfs_exit(zfsvfs
, FTAG
);
1722 * If we are not given an eof variable,
1729 * Check for valid iov_len.
1731 if (GET_UIO_STRUCT(uio
)->uio_iov
->iov_len
<= 0) {
1732 zfs_exit(zfsvfs
, FTAG
);
1733 return (SET_ERROR(EINVAL
));
1737 * Quit if directory has been removed (posix)
1739 if ((*eofp
= zp
->z_unlinked
) != 0) {
1740 zfs_exit(zfsvfs
, FTAG
);
1746 offset
= zfs_uio_offset(uio
);
1747 prefetch
= zp
->z_zn_prefetch
;
1750 * Initialize the iterator cursor.
1754 * Start iteration from the beginning of the directory.
1756 zap_cursor_init(&zc
, os
, zp
->z_id
);
1759 * The offset is a serialized cursor.
1761 zap_cursor_init_serialized(&zc
, os
, zp
->z_id
, offset
);
1765 * Get space to change directory entries into fs independent format.
1767 iovp
= GET_UIO_STRUCT(uio
)->uio_iov
;
1768 bytes_wanted
= iovp
->iov_len
;
1769 if (zfs_uio_segflg(uio
) != UIO_SYSSPACE
|| zfs_uio_iovcnt(uio
) != 1) {
1770 bufsize
= bytes_wanted
;
1771 outbuf
= kmem_alloc(bufsize
, KM_SLEEP
);
1772 odp
= (struct dirent64
*)outbuf
;
1774 bufsize
= bytes_wanted
;
1776 odp
= (struct dirent64
*)iovp
->iov_base
;
1779 if (ncookies
!= NULL
) {
1781 * Minimum entry size is dirent size and 1 byte for a file name.
1783 ncooks
= zfs_uio_resid(uio
) / (sizeof (struct dirent
) -
1784 sizeof (((struct dirent
*)NULL
)->d_name
) + 1);
1785 cooks
= malloc(ncooks
* sizeof (*cooks
), M_TEMP
, M_WAITOK
);
1791 * Transform to file-system independent format
1794 while (outcount
< bytes_wanted
) {
1797 off64_t
*next
= NULL
;
1800 * Special case `.', `..', and `.zfs'.
1803 (void) strcpy(zap
.za_name
, ".");
1804 zap
.za_normalization_conflict
= 0;
1807 } else if (offset
== 1) {
1808 (void) strcpy(zap
.za_name
, "..");
1809 zap
.za_normalization_conflict
= 0;
1812 } else if (offset
== 2 && zfs_show_ctldir(zp
)) {
1813 (void) strcpy(zap
.za_name
, ZFS_CTLDIR_NAME
);
1814 zap
.za_normalization_conflict
= 0;
1815 objnum
= ZFSCTL_INO_ROOT
;
1821 if ((error
= zap_cursor_retrieve(&zc
, &zap
))) {
1822 if ((*eofp
= (error
== ENOENT
)) != 0)
1828 if (zap
.za_integer_length
!= 8 ||
1829 zap
.za_num_integers
!= 1) {
1830 cmn_err(CE_WARN
, "zap_readdir: bad directory "
1831 "entry, obj = %lld, offset = %lld\n",
1832 (u_longlong_t
)zp
->z_id
,
1833 (u_longlong_t
)offset
);
1834 error
= SET_ERROR(ENXIO
);
1838 objnum
= ZFS_DIRENT_OBJ(zap
.za_first_integer
);
1840 * MacOS X can extract the object type here such as:
1841 * uint8_t type = ZFS_DIRENT_TYPE(zap.za_first_integer);
1843 type
= ZFS_DIRENT_TYPE(zap
.za_first_integer
);
1846 reclen
= DIRENT64_RECLEN(strlen(zap
.za_name
));
1849 * Will this entry fit in the buffer?
1851 if (outcount
+ reclen
> bufsize
) {
1853 * Did we manage to fit anything in the buffer?
1856 error
= SET_ERROR(EINVAL
);
1864 odp
->d_ino
= objnum
;
1865 odp
->d_reclen
= reclen
;
1866 odp
->d_namlen
= strlen(zap
.za_name
);
1867 /* NOTE: d_off is the offset for the *next* entry. */
1869 strlcpy(odp
->d_name
, zap
.za_name
, odp
->d_namlen
+ 1);
1871 dirent_terminate(odp
);
1872 odp
= (dirent64_t
*)((intptr_t)odp
+ reclen
);
1876 ASSERT3S(outcount
, <=, bufsize
);
1879 dmu_prefetch_dnode(os
, objnum
, ZIO_PRIORITY_SYNC_READ
);
1882 * Move to the next entry, fill in the previous offset.
1884 if (offset
> 2 || (offset
== 2 && !zfs_show_ctldir(zp
))) {
1885 zap_cursor_advance(&zc
);
1886 offset
= zap_cursor_serialize(&zc
);
1891 /* Fill the offset right after advancing the cursor. */
1894 if (cooks
!= NULL
) {
1897 KASSERT(ncooks
>= 0, ("ncookies=%d", ncooks
));
1900 zp
->z_zn_prefetch
= B_FALSE
; /* a lookup will re-enable pre-fetching */
1902 /* Subtract unused cookies */
1903 if (ncookies
!= NULL
)
1904 *ncookies
-= ncooks
;
1906 if (zfs_uio_segflg(uio
) == UIO_SYSSPACE
&& zfs_uio_iovcnt(uio
) == 1) {
1907 iovp
->iov_base
+= outcount
;
1908 iovp
->iov_len
-= outcount
;
1909 zfs_uio_resid(uio
) -= outcount
;
1911 zfs_uiomove(outbuf
, (long)outcount
, UIO_READ
, uio
))) {
1913 * Reset the pointer.
1915 offset
= zfs_uio_offset(uio
);
1919 zap_cursor_fini(&zc
);
1920 if (zfs_uio_segflg(uio
) != UIO_SYSSPACE
|| zfs_uio_iovcnt(uio
) != 1)
1921 kmem_free(outbuf
, bufsize
);
1923 if (error
== ENOENT
)
1926 ZFS_ACCESSTIME_STAMP(zfsvfs
, zp
);
1928 zfs_uio_setoffset(uio
, offset
);
1929 zfs_exit(zfsvfs
, FTAG
);
1930 if (error
!= 0 && cookies
!= NULL
) {
1931 free(*cookies
, M_TEMP
);
1939 * Get the requested file attributes and place them in the provided
1942 * IN: vp - vnode of file.
1943 * vap - va_mask identifies requested attributes.
1944 * If AT_XVATTR set, then optional attrs are requested
1945 * flags - ATTR_NOACLCHECK (CIFS server context)
1946 * cr - credentials of caller.
1948 * OUT: vap - attribute values.
1950 * RETURN: 0 (always succeeds).
1953 zfs_getattr(vnode_t
*vp
, vattr_t
*vap
, int flags
, cred_t
*cr
)
1955 znode_t
*zp
= VTOZ(vp
);
1956 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
1959 u_longlong_t nblocks
;
1960 uint64_t mtime
[2], ctime
[2], crtime
[2], rdev
;
1961 xvattr_t
*xvap
= (xvattr_t
*)vap
; /* vap may be an xvattr_t * */
1962 xoptattr_t
*xoap
= NULL
;
1963 boolean_t skipaclchk
= (flags
& ATTR_NOACLCHECK
) ? B_TRUE
: B_FALSE
;
1964 sa_bulk_attr_t bulk
[4];
1967 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
1970 zfs_fuid_map_ids(zp
, cr
, &vap
->va_uid
, &vap
->va_gid
);
1972 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_MTIME(zfsvfs
), NULL
, &mtime
, 16);
1973 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_CTIME(zfsvfs
), NULL
, &ctime
, 16);
1974 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_CRTIME(zfsvfs
), NULL
, &crtime
, 16);
1975 if (vp
->v_type
== VBLK
|| vp
->v_type
== VCHR
)
1976 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_RDEV(zfsvfs
), NULL
,
1979 if ((error
= sa_bulk_lookup(zp
->z_sa_hdl
, bulk
, count
)) != 0) {
1980 zfs_exit(zfsvfs
, FTAG
);
1985 * If ACL is trivial don't bother looking for ACE_READ_ATTRIBUTES.
1986 * Also, if we are the owner don't bother, since owner should
1987 * always be allowed to read basic attributes of file.
1989 if (!(zp
->z_pflags
& ZFS_ACL_TRIVIAL
) &&
1990 (vap
->va_uid
!= crgetuid(cr
))) {
1991 if ((error
= zfs_zaccess(zp
, ACE_READ_ATTRIBUTES
, 0,
1992 skipaclchk
, cr
, NULL
))) {
1993 zfs_exit(zfsvfs
, FTAG
);
1999 * Return all attributes. It's cheaper to provide the answer
2000 * than to determine whether we were asked the question.
2003 vap
->va_type
= IFTOVT(zp
->z_mode
);
2004 vap
->va_mode
= zp
->z_mode
& ~S_IFMT
;
2006 vap
->va_nodeid
= zp
->z_id
;
2007 vap
->va_nlink
= zp
->z_links
;
2008 if ((vp
->v_flag
& VROOT
) && zfs_show_ctldir(zp
) &&
2009 zp
->z_links
< ZFS_LINK_MAX
)
2011 vap
->va_size
= zp
->z_size
;
2012 if (vp
->v_type
== VBLK
|| vp
->v_type
== VCHR
)
2013 vap
->va_rdev
= zfs_cmpldev(rdev
);
2014 vap
->va_gen
= zp
->z_gen
;
2015 vap
->va_flags
= 0; /* FreeBSD: Reset chflags(2) flags. */
2016 vap
->va_filerev
= zp
->z_seq
;
2019 * Add in any requested optional attributes and the create time.
2020 * Also set the corresponding bits in the returned attribute bitmap.
2022 if ((xoap
= xva_getxoptattr(xvap
)) != NULL
&& zfsvfs
->z_use_fuids
) {
2023 if (XVA_ISSET_REQ(xvap
, XAT_ARCHIVE
)) {
2025 ((zp
->z_pflags
& ZFS_ARCHIVE
) != 0);
2026 XVA_SET_RTN(xvap
, XAT_ARCHIVE
);
2029 if (XVA_ISSET_REQ(xvap
, XAT_READONLY
)) {
2030 xoap
->xoa_readonly
=
2031 ((zp
->z_pflags
& ZFS_READONLY
) != 0);
2032 XVA_SET_RTN(xvap
, XAT_READONLY
);
2035 if (XVA_ISSET_REQ(xvap
, XAT_SYSTEM
)) {
2037 ((zp
->z_pflags
& ZFS_SYSTEM
) != 0);
2038 XVA_SET_RTN(xvap
, XAT_SYSTEM
);
2041 if (XVA_ISSET_REQ(xvap
, XAT_HIDDEN
)) {
2043 ((zp
->z_pflags
& ZFS_HIDDEN
) != 0);
2044 XVA_SET_RTN(xvap
, XAT_HIDDEN
);
2047 if (XVA_ISSET_REQ(xvap
, XAT_NOUNLINK
)) {
2048 xoap
->xoa_nounlink
=
2049 ((zp
->z_pflags
& ZFS_NOUNLINK
) != 0);
2050 XVA_SET_RTN(xvap
, XAT_NOUNLINK
);
2053 if (XVA_ISSET_REQ(xvap
, XAT_IMMUTABLE
)) {
2054 xoap
->xoa_immutable
=
2055 ((zp
->z_pflags
& ZFS_IMMUTABLE
) != 0);
2056 XVA_SET_RTN(xvap
, XAT_IMMUTABLE
);
2059 if (XVA_ISSET_REQ(xvap
, XAT_APPENDONLY
)) {
2060 xoap
->xoa_appendonly
=
2061 ((zp
->z_pflags
& ZFS_APPENDONLY
) != 0);
2062 XVA_SET_RTN(xvap
, XAT_APPENDONLY
);
2065 if (XVA_ISSET_REQ(xvap
, XAT_NODUMP
)) {
2067 ((zp
->z_pflags
& ZFS_NODUMP
) != 0);
2068 XVA_SET_RTN(xvap
, XAT_NODUMP
);
2071 if (XVA_ISSET_REQ(xvap
, XAT_OPAQUE
)) {
2073 ((zp
->z_pflags
& ZFS_OPAQUE
) != 0);
2074 XVA_SET_RTN(xvap
, XAT_OPAQUE
);
2077 if (XVA_ISSET_REQ(xvap
, XAT_AV_QUARANTINED
)) {
2078 xoap
->xoa_av_quarantined
=
2079 ((zp
->z_pflags
& ZFS_AV_QUARANTINED
) != 0);
2080 XVA_SET_RTN(xvap
, XAT_AV_QUARANTINED
);
2083 if (XVA_ISSET_REQ(xvap
, XAT_AV_MODIFIED
)) {
2084 xoap
->xoa_av_modified
=
2085 ((zp
->z_pflags
& ZFS_AV_MODIFIED
) != 0);
2086 XVA_SET_RTN(xvap
, XAT_AV_MODIFIED
);
2089 if (XVA_ISSET_REQ(xvap
, XAT_AV_SCANSTAMP
) &&
2090 vp
->v_type
== VREG
) {
2091 zfs_sa_get_scanstamp(zp
, xvap
);
2094 if (XVA_ISSET_REQ(xvap
, XAT_REPARSE
)) {
2095 xoap
->xoa_reparse
= ((zp
->z_pflags
& ZFS_REPARSE
) != 0);
2096 XVA_SET_RTN(xvap
, XAT_REPARSE
);
2098 if (XVA_ISSET_REQ(xvap
, XAT_GEN
)) {
2099 xoap
->xoa_generation
= zp
->z_gen
;
2100 XVA_SET_RTN(xvap
, XAT_GEN
);
2103 if (XVA_ISSET_REQ(xvap
, XAT_OFFLINE
)) {
2105 ((zp
->z_pflags
& ZFS_OFFLINE
) != 0);
2106 XVA_SET_RTN(xvap
, XAT_OFFLINE
);
2109 if (XVA_ISSET_REQ(xvap
, XAT_SPARSE
)) {
2111 ((zp
->z_pflags
& ZFS_SPARSE
) != 0);
2112 XVA_SET_RTN(xvap
, XAT_SPARSE
);
2115 if (XVA_ISSET_REQ(xvap
, XAT_PROJINHERIT
)) {
2116 xoap
->xoa_projinherit
=
2117 ((zp
->z_pflags
& ZFS_PROJINHERIT
) != 0);
2118 XVA_SET_RTN(xvap
, XAT_PROJINHERIT
);
2121 if (XVA_ISSET_REQ(xvap
, XAT_PROJID
)) {
2122 xoap
->xoa_projid
= zp
->z_projid
;
2123 XVA_SET_RTN(xvap
, XAT_PROJID
);
2127 ZFS_TIME_DECODE(&vap
->va_atime
, zp
->z_atime
);
2128 ZFS_TIME_DECODE(&vap
->va_mtime
, mtime
);
2129 ZFS_TIME_DECODE(&vap
->va_ctime
, ctime
);
2130 ZFS_TIME_DECODE(&vap
->va_birthtime
, crtime
);
2133 sa_object_size(zp
->z_sa_hdl
, &blksize
, &nblocks
);
2134 vap
->va_blksize
= blksize
;
2135 vap
->va_bytes
= nblocks
<< 9; /* nblocks * 512 */
2137 if (zp
->z_blksz
== 0) {
2139 * Block size hasn't been set; suggest maximal I/O transfers.
2141 vap
->va_blksize
= zfsvfs
->z_max_blksz
;
2144 zfs_exit(zfsvfs
, FTAG
);
2149 * Set the file attributes to the values contained in the
2152 * IN: zp - znode of file to be modified.
2153 * vap - new attribute values.
2154 * If AT_XVATTR set, then optional attrs are being set
2155 * flags - ATTR_UTIME set if non-default time values provided.
2156 * - ATTR_NOACLCHECK (CIFS context only).
2157 * cr - credentials of caller.
2158 * mnt_ns - Unused on FreeBSD
2160 * RETURN: 0 on success, error code on failure.
2163 * vp - ctime updated, mtime updated if size changed.
2166 zfs_setattr(znode_t
*zp
, vattr_t
*vap
, int flags
, cred_t
*cr
, zidmap_t
*mnt_ns
)
2168 vnode_t
*vp
= ZTOV(zp
);
2169 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
2175 uint_t mask
= vap
->va_mask
;
2176 uint_t saved_mask
= 0;
2177 uint64_t saved_mode
;
2180 uint64_t new_uid
, new_gid
;
2182 uint64_t mtime
[2], ctime
[2];
2183 uint64_t projid
= ZFS_INVALID_PROJID
;
2185 int need_policy
= FALSE
;
2187 zfs_fuid_info_t
*fuidp
= NULL
;
2188 xvattr_t
*xvap
= (xvattr_t
*)vap
; /* vap may be an xvattr_t * */
2191 boolean_t skipaclchk
= (flags
& ATTR_NOACLCHECK
) ? B_TRUE
: B_FALSE
;
2192 boolean_t fuid_dirtied
= B_FALSE
;
2193 sa_bulk_attr_t bulk
[7], xattr_bulk
[7];
2194 int count
= 0, xattr_count
= 0;
2199 if (mask
& AT_NOSET
)
2200 return (SET_ERROR(EINVAL
));
2202 if ((err
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
2206 zilog
= zfsvfs
->z_log
;
2209 * Make sure that if we have ephemeral uid/gid or xvattr specified
2210 * that file system is at proper version level
2213 if (zfsvfs
->z_use_fuids
== B_FALSE
&&
2214 (((mask
& AT_UID
) && IS_EPHEMERAL(vap
->va_uid
)) ||
2215 ((mask
& AT_GID
) && IS_EPHEMERAL(vap
->va_gid
)) ||
2216 (mask
& AT_XVATTR
))) {
2217 zfs_exit(zfsvfs
, FTAG
);
2218 return (SET_ERROR(EINVAL
));
2221 if (mask
& AT_SIZE
&& vp
->v_type
== VDIR
) {
2222 zfs_exit(zfsvfs
, FTAG
);
2223 return (SET_ERROR(EISDIR
));
2226 if (mask
& AT_SIZE
&& vp
->v_type
!= VREG
&& vp
->v_type
!= VFIFO
) {
2227 zfs_exit(zfsvfs
, FTAG
);
2228 return (SET_ERROR(EINVAL
));
2232 * If this is an xvattr_t, then get a pointer to the structure of
2233 * optional attributes. If this is NULL, then we have a vattr_t.
2235 xoap
= xva_getxoptattr(xvap
);
2237 xva_init(&tmpxvattr
);
2240 * Immutable files can only alter immutable bit and atime
2242 if ((zp
->z_pflags
& ZFS_IMMUTABLE
) &&
2243 ((mask
& (AT_SIZE
|AT_UID
|AT_GID
|AT_MTIME
|AT_MODE
)) ||
2244 ((mask
& AT_XVATTR
) && XVA_ISSET_REQ(xvap
, XAT_CREATETIME
)))) {
2245 zfs_exit(zfsvfs
, FTAG
);
2246 return (SET_ERROR(EPERM
));
2250 * Note: ZFS_READONLY is handled in zfs_zaccess_common.
2254 * Verify timestamps doesn't overflow 32 bits.
2255 * ZFS can handle large timestamps, but 32bit syscalls can't
2256 * handle times greater than 2039. This check should be removed
2257 * once large timestamps are fully supported.
2259 if (mask
& (AT_ATIME
| AT_MTIME
)) {
2260 if (((mask
& AT_ATIME
) && TIMESPEC_OVERFLOW(&vap
->va_atime
)) ||
2261 ((mask
& AT_MTIME
) && TIMESPEC_OVERFLOW(&vap
->va_mtime
))) {
2262 zfs_exit(zfsvfs
, FTAG
);
2263 return (SET_ERROR(EOVERFLOW
));
2266 if (xoap
!= NULL
&& (mask
& AT_XVATTR
)) {
2267 if (XVA_ISSET_REQ(xvap
, XAT_CREATETIME
) &&
2268 TIMESPEC_OVERFLOW(&vap
->va_birthtime
)) {
2269 zfs_exit(zfsvfs
, FTAG
);
2270 return (SET_ERROR(EOVERFLOW
));
2273 if (XVA_ISSET_REQ(xvap
, XAT_PROJID
)) {
2274 if (!dmu_objset_projectquota_enabled(os
) ||
2275 (!S_ISREG(zp
->z_mode
) && !S_ISDIR(zp
->z_mode
))) {
2276 zfs_exit(zfsvfs
, FTAG
);
2277 return (SET_ERROR(EOPNOTSUPP
));
2280 projid
= xoap
->xoa_projid
;
2281 if (unlikely(projid
== ZFS_INVALID_PROJID
)) {
2282 zfs_exit(zfsvfs
, FTAG
);
2283 return (SET_ERROR(EINVAL
));
2286 if (projid
== zp
->z_projid
&& zp
->z_pflags
& ZFS_PROJID
)
2287 projid
= ZFS_INVALID_PROJID
;
2292 if (XVA_ISSET_REQ(xvap
, XAT_PROJINHERIT
) &&
2293 (xoap
->xoa_projinherit
!=
2294 ((zp
->z_pflags
& ZFS_PROJINHERIT
) != 0)) &&
2295 (!dmu_objset_projectquota_enabled(os
) ||
2296 (!S_ISREG(zp
->z_mode
) && !S_ISDIR(zp
->z_mode
)))) {
2297 zfs_exit(zfsvfs
, FTAG
);
2298 return (SET_ERROR(EOPNOTSUPP
));
2305 if (zfsvfs
->z_vfs
->vfs_flag
& VFS_RDONLY
) {
2306 zfs_exit(zfsvfs
, FTAG
);
2307 return (SET_ERROR(EROFS
));
2311 * First validate permissions
2314 if (mask
& AT_SIZE
) {
2316 * XXX - Note, we are not providing any open
2317 * mode flags here (like FNDELAY), so we may
2318 * block if there are locks present... this
2319 * should be addressed in openat().
2321 /* XXX - would it be OK to generate a log record here? */
2322 err
= zfs_freesp(zp
, vap
->va_size
, 0, 0, FALSE
);
2324 zfs_exit(zfsvfs
, FTAG
);
2329 if (mask
& (AT_ATIME
|AT_MTIME
) ||
2330 ((mask
& AT_XVATTR
) && (XVA_ISSET_REQ(xvap
, XAT_HIDDEN
) ||
2331 XVA_ISSET_REQ(xvap
, XAT_READONLY
) ||
2332 XVA_ISSET_REQ(xvap
, XAT_ARCHIVE
) ||
2333 XVA_ISSET_REQ(xvap
, XAT_OFFLINE
) ||
2334 XVA_ISSET_REQ(xvap
, XAT_SPARSE
) ||
2335 XVA_ISSET_REQ(xvap
, XAT_CREATETIME
) ||
2336 XVA_ISSET_REQ(xvap
, XAT_SYSTEM
)))) {
2337 need_policy
= zfs_zaccess(zp
, ACE_WRITE_ATTRIBUTES
, 0,
2338 skipaclchk
, cr
, mnt_ns
);
2341 if (mask
& (AT_UID
|AT_GID
)) {
2342 int idmask
= (mask
& (AT_UID
|AT_GID
));
2347 * NOTE: even if a new mode is being set,
2348 * we may clear S_ISUID/S_ISGID bits.
2351 if (!(mask
& AT_MODE
))
2352 vap
->va_mode
= zp
->z_mode
;
2355 * Take ownership or chgrp to group we are a member of
2358 take_owner
= (mask
& AT_UID
) && (vap
->va_uid
== crgetuid(cr
));
2359 take_group
= (mask
& AT_GID
) &&
2360 zfs_groupmember(zfsvfs
, vap
->va_gid
, cr
);
2363 * If both AT_UID and AT_GID are set then take_owner and
2364 * take_group must both be set in order to allow taking
2367 * Otherwise, send the check through secpolicy_vnode_setattr()
2371 if (((idmask
== (AT_UID
|AT_GID
)) && take_owner
&& take_group
) ||
2372 ((idmask
== AT_UID
) && take_owner
) ||
2373 ((idmask
== AT_GID
) && take_group
)) {
2374 if (zfs_zaccess(zp
, ACE_WRITE_OWNER
, 0,
2375 skipaclchk
, cr
, mnt_ns
) == 0) {
2377 * Remove setuid/setgid for non-privileged users
2379 secpolicy_setid_clear(vap
, vp
, cr
);
2380 trim_mask
= (mask
& (AT_UID
|AT_GID
));
2389 oldva
.va_mode
= zp
->z_mode
;
2390 zfs_fuid_map_ids(zp
, cr
, &oldva
.va_uid
, &oldva
.va_gid
);
2391 if (mask
& AT_XVATTR
) {
2393 * Update xvattr mask to include only those attributes
2394 * that are actually changing.
2396 * the bits will be restored prior to actually setting
2397 * the attributes so the caller thinks they were set.
2399 if (XVA_ISSET_REQ(xvap
, XAT_APPENDONLY
)) {
2400 if (xoap
->xoa_appendonly
!=
2401 ((zp
->z_pflags
& ZFS_APPENDONLY
) != 0)) {
2404 XVA_CLR_REQ(xvap
, XAT_APPENDONLY
);
2405 XVA_SET_REQ(&tmpxvattr
, XAT_APPENDONLY
);
2409 if (XVA_ISSET_REQ(xvap
, XAT_PROJINHERIT
)) {
2410 if (xoap
->xoa_projinherit
!=
2411 ((zp
->z_pflags
& ZFS_PROJINHERIT
) != 0)) {
2414 XVA_CLR_REQ(xvap
, XAT_PROJINHERIT
);
2415 XVA_SET_REQ(&tmpxvattr
, XAT_PROJINHERIT
);
2419 if (XVA_ISSET_REQ(xvap
, XAT_NOUNLINK
)) {
2420 if (xoap
->xoa_nounlink
!=
2421 ((zp
->z_pflags
& ZFS_NOUNLINK
) != 0)) {
2424 XVA_CLR_REQ(xvap
, XAT_NOUNLINK
);
2425 XVA_SET_REQ(&tmpxvattr
, XAT_NOUNLINK
);
2429 if (XVA_ISSET_REQ(xvap
, XAT_IMMUTABLE
)) {
2430 if (xoap
->xoa_immutable
!=
2431 ((zp
->z_pflags
& ZFS_IMMUTABLE
) != 0)) {
2434 XVA_CLR_REQ(xvap
, XAT_IMMUTABLE
);
2435 XVA_SET_REQ(&tmpxvattr
, XAT_IMMUTABLE
);
2439 if (XVA_ISSET_REQ(xvap
, XAT_NODUMP
)) {
2440 if (xoap
->xoa_nodump
!=
2441 ((zp
->z_pflags
& ZFS_NODUMP
) != 0)) {
2444 XVA_CLR_REQ(xvap
, XAT_NODUMP
);
2445 XVA_SET_REQ(&tmpxvattr
, XAT_NODUMP
);
2449 if (XVA_ISSET_REQ(xvap
, XAT_AV_MODIFIED
)) {
2450 if (xoap
->xoa_av_modified
!=
2451 ((zp
->z_pflags
& ZFS_AV_MODIFIED
) != 0)) {
2454 XVA_CLR_REQ(xvap
, XAT_AV_MODIFIED
);
2455 XVA_SET_REQ(&tmpxvattr
, XAT_AV_MODIFIED
);
2459 if (XVA_ISSET_REQ(xvap
, XAT_AV_QUARANTINED
)) {
2460 if ((vp
->v_type
!= VREG
&&
2461 xoap
->xoa_av_quarantined
) ||
2462 xoap
->xoa_av_quarantined
!=
2463 ((zp
->z_pflags
& ZFS_AV_QUARANTINED
) != 0)) {
2466 XVA_CLR_REQ(xvap
, XAT_AV_QUARANTINED
);
2467 XVA_SET_REQ(&tmpxvattr
, XAT_AV_QUARANTINED
);
2471 if (XVA_ISSET_REQ(xvap
, XAT_REPARSE
)) {
2472 zfs_exit(zfsvfs
, FTAG
);
2473 return (SET_ERROR(EPERM
));
2476 if (need_policy
== FALSE
&&
2477 (XVA_ISSET_REQ(xvap
, XAT_AV_SCANSTAMP
) ||
2478 XVA_ISSET_REQ(xvap
, XAT_OPAQUE
))) {
2483 if (mask
& AT_MODE
) {
2484 if (zfs_zaccess(zp
, ACE_WRITE_ACL
, 0, skipaclchk
, cr
,
2486 err
= secpolicy_setid_setsticky_clear(vp
, vap
,
2489 zfs_exit(zfsvfs
, FTAG
);
2492 trim_mask
|= AT_MODE
;
2500 * If trim_mask is set then take ownership
2501 * has been granted or write_acl is present and user
2502 * has the ability to modify mode. In that case remove
2503 * UID|GID and or MODE from mask so that
2504 * secpolicy_vnode_setattr() doesn't revoke it.
2508 saved_mask
= vap
->va_mask
;
2509 vap
->va_mask
&= ~trim_mask
;
2510 if (trim_mask
& AT_MODE
) {
2512 * Save the mode, as secpolicy_vnode_setattr()
2513 * will overwrite it with ova.va_mode.
2515 saved_mode
= vap
->va_mode
;
2518 err
= secpolicy_vnode_setattr(cr
, vp
, vap
, &oldva
, flags
,
2519 (int (*)(void *, int, cred_t
*))zfs_zaccess_unix
, zp
);
2521 zfs_exit(zfsvfs
, FTAG
);
2526 vap
->va_mask
|= saved_mask
;
2527 if (trim_mask
& AT_MODE
) {
2529 * Recover the mode after
2530 * secpolicy_vnode_setattr().
2532 vap
->va_mode
= saved_mode
;
2538 * secpolicy_vnode_setattr, or take ownership may have
2541 mask
= vap
->va_mask
;
2543 if ((mask
& (AT_UID
| AT_GID
)) || projid
!= ZFS_INVALID_PROJID
) {
2544 err
= sa_lookup(zp
->z_sa_hdl
, SA_ZPL_XATTR(zfsvfs
),
2545 &xattr_obj
, sizeof (xattr_obj
));
2547 if (err
== 0 && xattr_obj
) {
2548 err
= zfs_zget(zp
->z_zfsvfs
, xattr_obj
, &attrzp
);
2550 err
= vn_lock(ZTOV(attrzp
), LK_EXCLUSIVE
);
2552 vrele(ZTOV(attrzp
));
2557 if (mask
& AT_UID
) {
2558 new_uid
= zfs_fuid_create(zfsvfs
,
2559 (uint64_t)vap
->va_uid
, cr
, ZFS_OWNER
, &fuidp
);
2560 if (new_uid
!= zp
->z_uid
&&
2561 zfs_id_overquota(zfsvfs
, DMU_USERUSED_OBJECT
,
2565 err
= SET_ERROR(EDQUOT
);
2570 if (mask
& AT_GID
) {
2571 new_gid
= zfs_fuid_create(zfsvfs
, (uint64_t)vap
->va_gid
,
2572 cr
, ZFS_GROUP
, &fuidp
);
2573 if (new_gid
!= zp
->z_gid
&&
2574 zfs_id_overquota(zfsvfs
, DMU_GROUPUSED_OBJECT
,
2578 err
= SET_ERROR(EDQUOT
);
2583 if (projid
!= ZFS_INVALID_PROJID
&&
2584 zfs_id_overquota(zfsvfs
, DMU_PROJECTUSED_OBJECT
, projid
)) {
2587 err
= SET_ERROR(EDQUOT
);
2591 tx
= dmu_tx_create(os
);
2593 if (mask
& AT_MODE
) {
2594 uint64_t pmode
= zp
->z_mode
;
2596 new_mode
= (pmode
& S_IFMT
) | (vap
->va_mode
& ~S_IFMT
);
2598 if (zp
->z_zfsvfs
->z_acl_mode
== ZFS_ACL_RESTRICTED
&&
2599 !(zp
->z_pflags
& ZFS_ACL_TRIVIAL
)) {
2600 err
= SET_ERROR(EPERM
);
2604 if ((err
= zfs_acl_chmod_setattr(zp
, &aclp
, new_mode
)))
2607 if (!zp
->z_is_sa
&& ((acl_obj
= zfs_external_acl(zp
)) != 0)) {
2609 * Are we upgrading ACL from old V0 format
2612 if (zfsvfs
->z_version
>= ZPL_VERSION_FUID
&&
2613 zfs_znode_acl_version(zp
) ==
2614 ZFS_ACL_VERSION_INITIAL
) {
2615 dmu_tx_hold_free(tx
, acl_obj
, 0,
2617 dmu_tx_hold_write(tx
, DMU_NEW_OBJECT
,
2618 0, aclp
->z_acl_bytes
);
2620 dmu_tx_hold_write(tx
, acl_obj
, 0,
2623 } else if (!zp
->z_is_sa
&& aclp
->z_acl_bytes
> ZFS_ACE_SPACE
) {
2624 dmu_tx_hold_write(tx
, DMU_NEW_OBJECT
,
2625 0, aclp
->z_acl_bytes
);
2627 dmu_tx_hold_sa(tx
, zp
->z_sa_hdl
, B_TRUE
);
2629 if (((mask
& AT_XVATTR
) &&
2630 XVA_ISSET_REQ(xvap
, XAT_AV_SCANSTAMP
)) ||
2631 (projid
!= ZFS_INVALID_PROJID
&&
2632 !(zp
->z_pflags
& ZFS_PROJID
)))
2633 dmu_tx_hold_sa(tx
, zp
->z_sa_hdl
, B_TRUE
);
2635 dmu_tx_hold_sa(tx
, zp
->z_sa_hdl
, B_FALSE
);
2639 dmu_tx_hold_sa(tx
, attrzp
->z_sa_hdl
, B_FALSE
);
2642 fuid_dirtied
= zfsvfs
->z_fuid_dirty
;
2644 zfs_fuid_txhold(zfsvfs
, tx
);
2646 zfs_sa_upgrade_txholds(tx
, zp
);
2648 err
= dmu_tx_assign(tx
, TXG_WAIT
);
2654 * Set each attribute requested.
2655 * We group settings according to the locks they need to acquire.
2657 * Note: you cannot set ctime directly, although it will be
2658 * updated as a side-effect of calling this function.
2661 if (projid
!= ZFS_INVALID_PROJID
&& !(zp
->z_pflags
& ZFS_PROJID
)) {
2663 * For the existed object that is upgraded from old system,
2664 * its on-disk layout has no slot for the project ID attribute.
2665 * But quota accounting logic needs to access related slots by
2666 * offset directly. So we need to adjust old objects' layout
2667 * to make the project ID to some unified and fixed offset.
2670 err
= sa_add_projid(attrzp
->z_sa_hdl
, tx
, projid
);
2672 err
= sa_add_projid(zp
->z_sa_hdl
, tx
, projid
);
2674 if (unlikely(err
== EEXIST
))
2679 projid
= ZFS_INVALID_PROJID
;
2682 if (mask
& (AT_UID
|AT_GID
|AT_MODE
))
2683 mutex_enter(&zp
->z_acl_lock
);
2685 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_FLAGS(zfsvfs
), NULL
,
2686 &zp
->z_pflags
, sizeof (zp
->z_pflags
));
2689 if (mask
& (AT_UID
|AT_GID
|AT_MODE
))
2690 mutex_enter(&attrzp
->z_acl_lock
);
2691 SA_ADD_BULK_ATTR(xattr_bulk
, xattr_count
,
2692 SA_ZPL_FLAGS(zfsvfs
), NULL
, &attrzp
->z_pflags
,
2693 sizeof (attrzp
->z_pflags
));
2694 if (projid
!= ZFS_INVALID_PROJID
) {
2695 attrzp
->z_projid
= projid
;
2696 SA_ADD_BULK_ATTR(xattr_bulk
, xattr_count
,
2697 SA_ZPL_PROJID(zfsvfs
), NULL
, &attrzp
->z_projid
,
2698 sizeof (attrzp
->z_projid
));
2702 if (mask
& (AT_UID
|AT_GID
)) {
2704 if (mask
& AT_UID
) {
2705 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_UID(zfsvfs
), NULL
,
2706 &new_uid
, sizeof (new_uid
));
2707 zp
->z_uid
= new_uid
;
2709 SA_ADD_BULK_ATTR(xattr_bulk
, xattr_count
,
2710 SA_ZPL_UID(zfsvfs
), NULL
, &new_uid
,
2712 attrzp
->z_uid
= new_uid
;
2716 if (mask
& AT_GID
) {
2717 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_GID(zfsvfs
),
2718 NULL
, &new_gid
, sizeof (new_gid
));
2719 zp
->z_gid
= new_gid
;
2721 SA_ADD_BULK_ATTR(xattr_bulk
, xattr_count
,
2722 SA_ZPL_GID(zfsvfs
), NULL
, &new_gid
,
2724 attrzp
->z_gid
= new_gid
;
2727 if (!(mask
& AT_MODE
)) {
2728 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_MODE(zfsvfs
),
2729 NULL
, &new_mode
, sizeof (new_mode
));
2730 new_mode
= zp
->z_mode
;
2732 err
= zfs_acl_chown_setattr(zp
);
2735 vn_seqc_write_begin(ZTOV(attrzp
));
2736 err
= zfs_acl_chown_setattr(attrzp
);
2737 vn_seqc_write_end(ZTOV(attrzp
));
2742 if (mask
& AT_MODE
) {
2743 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_MODE(zfsvfs
), NULL
,
2744 &new_mode
, sizeof (new_mode
));
2745 zp
->z_mode
= new_mode
;
2746 ASSERT3P(aclp
, !=, NULL
);
2747 err
= zfs_aclset_common(zp
, aclp
, cr
, tx
);
2749 if (zp
->z_acl_cached
)
2750 zfs_acl_free(zp
->z_acl_cached
);
2751 zp
->z_acl_cached
= aclp
;
2756 if (mask
& AT_ATIME
) {
2757 ZFS_TIME_ENCODE(&vap
->va_atime
, zp
->z_atime
);
2758 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_ATIME(zfsvfs
), NULL
,
2759 &zp
->z_atime
, sizeof (zp
->z_atime
));
2762 if (mask
& AT_MTIME
) {
2763 ZFS_TIME_ENCODE(&vap
->va_mtime
, mtime
);
2764 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_MTIME(zfsvfs
), NULL
,
2765 mtime
, sizeof (mtime
));
2768 if (projid
!= ZFS_INVALID_PROJID
) {
2769 zp
->z_projid
= projid
;
2770 SA_ADD_BULK_ATTR(bulk
, count
,
2771 SA_ZPL_PROJID(zfsvfs
), NULL
, &zp
->z_projid
,
2772 sizeof (zp
->z_projid
));
2775 /* XXX - shouldn't this be done *before* the ATIME/MTIME checks? */
2776 if (mask
& AT_SIZE
&& !(mask
& AT_MTIME
)) {
2777 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_MTIME(zfsvfs
),
2778 NULL
, mtime
, sizeof (mtime
));
2779 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_CTIME(zfsvfs
), NULL
,
2780 &ctime
, sizeof (ctime
));
2781 zfs_tstamp_update_setup(zp
, CONTENT_MODIFIED
, mtime
, ctime
);
2782 } else if (mask
!= 0) {
2783 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_CTIME(zfsvfs
), NULL
,
2784 &ctime
, sizeof (ctime
));
2785 zfs_tstamp_update_setup(zp
, STATE_CHANGED
, mtime
, ctime
);
2787 SA_ADD_BULK_ATTR(xattr_bulk
, xattr_count
,
2788 SA_ZPL_CTIME(zfsvfs
), NULL
,
2789 &ctime
, sizeof (ctime
));
2790 zfs_tstamp_update_setup(attrzp
, STATE_CHANGED
,
2796 * Do this after setting timestamps to prevent timestamp
2797 * update from toggling bit
2800 if (xoap
&& (mask
& AT_XVATTR
)) {
2802 if (XVA_ISSET_REQ(xvap
, XAT_CREATETIME
))
2803 xoap
->xoa_createtime
= vap
->va_birthtime
;
2805 * restore trimmed off masks
2806 * so that return masks can be set for caller.
2809 if (XVA_ISSET_REQ(&tmpxvattr
, XAT_APPENDONLY
)) {
2810 XVA_SET_REQ(xvap
, XAT_APPENDONLY
);
2812 if (XVA_ISSET_REQ(&tmpxvattr
, XAT_NOUNLINK
)) {
2813 XVA_SET_REQ(xvap
, XAT_NOUNLINK
);
2815 if (XVA_ISSET_REQ(&tmpxvattr
, XAT_IMMUTABLE
)) {
2816 XVA_SET_REQ(xvap
, XAT_IMMUTABLE
);
2818 if (XVA_ISSET_REQ(&tmpxvattr
, XAT_NODUMP
)) {
2819 XVA_SET_REQ(xvap
, XAT_NODUMP
);
2821 if (XVA_ISSET_REQ(&tmpxvattr
, XAT_AV_MODIFIED
)) {
2822 XVA_SET_REQ(xvap
, XAT_AV_MODIFIED
);
2824 if (XVA_ISSET_REQ(&tmpxvattr
, XAT_AV_QUARANTINED
)) {
2825 XVA_SET_REQ(xvap
, XAT_AV_QUARANTINED
);
2827 if (XVA_ISSET_REQ(&tmpxvattr
, XAT_PROJINHERIT
)) {
2828 XVA_SET_REQ(xvap
, XAT_PROJINHERIT
);
2831 if (XVA_ISSET_REQ(xvap
, XAT_AV_SCANSTAMP
))
2832 ASSERT3S(vp
->v_type
, ==, VREG
);
2834 zfs_xvattr_set(zp
, xvap
, tx
);
2838 zfs_fuid_sync(zfsvfs
, tx
);
2841 zfs_log_setattr(zilog
, tx
, TX_SETATTR
, zp
, vap
, mask
, fuidp
);
2843 if (mask
& (AT_UID
|AT_GID
|AT_MODE
))
2844 mutex_exit(&zp
->z_acl_lock
);
2847 if (mask
& (AT_UID
|AT_GID
|AT_MODE
))
2848 mutex_exit(&attrzp
->z_acl_lock
);
2851 if (err
== 0 && attrzp
) {
2852 err2
= sa_bulk_update(attrzp
->z_sa_hdl
, xattr_bulk
,
2864 zfs_fuid_info_free(fuidp
);
2871 err2
= sa_bulk_update(zp
->z_sa_hdl
, bulk
, count
, tx
);
2876 if (os
->os_sync
== ZFS_SYNC_ALWAYS
)
2877 zil_commit(zilog
, 0);
2879 zfs_exit(zfsvfs
, FTAG
);
2884 * Look up the directory entries corresponding to the source and target
2885 * directory/name pairs.
2888 zfs_rename_relock_lookup(znode_t
*sdzp
, const struct componentname
*scnp
,
2889 znode_t
**szpp
, znode_t
*tdzp
, const struct componentname
*tcnp
,
2897 * Before using sdzp and tdzp we must ensure that they are live.
2898 * As a porting legacy from illumos we have two things to worry
2899 * about. One is typical for FreeBSD and it is that the vnode is
2900 * not reclaimed (doomed). The other is that the znode is live.
2901 * The current code can invalidate the znode without acquiring the
2902 * corresponding vnode lock if the object represented by the znode
2903 * and vnode is no longer valid after a rollback or receive operation.
2904 * z_teardown_lock hidden behind zfs_enter and zfs_exit is the lock
2905 * that protects the znodes from the invalidation.
2907 zfsvfs
= sdzp
->z_zfsvfs
;
2908 ASSERT3P(zfsvfs
, ==, tdzp
->z_zfsvfs
);
2909 if ((error
= zfs_enter_verify_zp(zfsvfs
, sdzp
, FTAG
)) != 0)
2911 if ((error
= zfs_verify_zp(tdzp
)) != 0) {
2912 zfs_exit(zfsvfs
, FTAG
);
2917 * Re-resolve svp to be certain it still exists and fetch the
2920 error
= zfs_dirent_lookup(sdzp
, scnp
->cn_nameptr
, &szp
, ZEXISTS
);
2922 /* Source entry invalid or not there. */
2923 if ((scnp
->cn_flags
& ISDOTDOT
) != 0 ||
2924 (scnp
->cn_namelen
== 1 && scnp
->cn_nameptr
[0] == '.'))
2925 error
= SET_ERROR(EINVAL
);
2931 * Re-resolve tvp, if it disappeared we just carry on.
2933 error
= zfs_dirent_lookup(tdzp
, tcnp
->cn_nameptr
, &tzp
, 0);
2936 if ((tcnp
->cn_flags
& ISDOTDOT
) != 0)
2937 error
= SET_ERROR(EINVAL
);
2942 zfs_exit(zfsvfs
, FTAG
);
2947 * We acquire all but fdvp locks using non-blocking acquisitions. If we
2948 * fail to acquire any lock in the path we will drop all held locks,
2949 * acquire the new lock in a blocking fashion, and then release it and
2950 * restart the rename. This acquire/release step ensures that we do not
2951 * spin on a lock waiting for release. On error release all vnode locks
2952 * and decrement references the way tmpfs_rename() would do.
2955 zfs_rename_relock(struct vnode
*sdvp
, struct vnode
**svpp
,
2956 struct vnode
*tdvp
, struct vnode
**tvpp
,
2957 const struct componentname
*scnp
, const struct componentname
*tcnp
)
2959 struct vnode
*nvp
, *svp
, *tvp
;
2960 znode_t
*sdzp
, *tdzp
, *szp
, *tzp
;
2964 if (*tvpp
!= NULL
&& *tvpp
!= tdvp
)
2968 error
= vn_lock(sdvp
, LK_EXCLUSIVE
);
2971 error
= vn_lock(tdvp
, LK_EXCLUSIVE
| LK_NOWAIT
);
2976 error
= vn_lock(tdvp
, LK_EXCLUSIVE
);
2985 error
= zfs_rename_relock_lookup(sdzp
, scnp
, &szp
, tdzp
, tcnp
, &tzp
);
2992 tvp
= tzp
!= NULL
? ZTOV(tzp
) : NULL
;
2995 * Now try acquire locks on svp and tvp.
2998 error
= vn_lock(nvp
, LK_EXCLUSIVE
| LK_NOWAIT
);
3004 if (error
!= EBUSY
) {
3008 error
= vn_lock(nvp
, LK_EXCLUSIVE
);
3015 * Concurrent rename race.
3020 error
= SET_ERROR(EINVAL
);
3035 error
= vn_lock(nvp
, LK_EXCLUSIVE
| LK_NOWAIT
);
3040 if (error
!= EBUSY
) {
3044 error
= vn_lock(nvp
, LK_EXCLUSIVE
);
3062 * Note that we must use VRELE_ASYNC in this function as it walks
3063 * up the directory tree and vrele may need to acquire an exclusive
3064 * lock if a last reference to a vnode is dropped.
3067 zfs_rename_check(znode_t
*szp
, znode_t
*sdzp
, znode_t
*tdzp
)
3074 zfsvfs
= tdzp
->z_zfsvfs
;
3076 return (SET_ERROR(EINVAL
));
3079 if (tdzp
->z_id
== zfsvfs
->z_root
)
3083 ASSERT(!zp
->z_unlinked
);
3084 if ((error
= sa_lookup(zp
->z_sa_hdl
,
3085 SA_ZPL_PARENT(zfsvfs
), &parent
, sizeof (parent
))) != 0)
3088 if (parent
== szp
->z_id
) {
3089 error
= SET_ERROR(EINVAL
);
3092 if (parent
== zfsvfs
->z_root
)
3094 if (parent
== sdzp
->z_id
)
3097 error
= zfs_zget(zfsvfs
, parent
, &zp1
);
3102 VN_RELE_ASYNC(ZTOV(zp
),
3103 dsl_pool_zrele_taskq(
3104 dmu_objset_pool(zfsvfs
->z_os
)));
3108 if (error
== ENOTDIR
)
3109 panic("checkpath: .. not a directory\n");
3111 VN_RELE_ASYNC(ZTOV(zp
),
3112 dsl_pool_zrele_taskq(dmu_objset_pool(zfsvfs
->z_os
)));
3116 #if __FreeBSD_version < 1300124
3118 cache_vop_rename(struct vnode
*fdvp
, struct vnode
*fvp
, struct vnode
*tdvp
,
3119 struct vnode
*tvp
, struct componentname
*fcnp
, struct componentname
*tcnp
)
3125 cache_purge_negative(tdvp
);
3130 zfs_do_rename_impl(vnode_t
*sdvp
, vnode_t
**svpp
, struct componentname
*scnp
,
3131 vnode_t
*tdvp
, vnode_t
**tvpp
, struct componentname
*tcnp
,
3135 * Move an entry from the provided source directory to the target
3136 * directory. Change the entry name as indicated.
3138 * IN: sdvp - Source directory containing the "old entry".
3139 * scnp - Old entry name.
3140 * tdvp - Target directory to contain the "new entry".
3141 * tcnp - New entry name.
3142 * cr - credentials of caller.
3143 * INOUT: svpp - Source file
3144 * tvpp - Target file, may point to NULL initially
3146 * RETURN: 0 on success, error code on failure.
3149 * sdvp,tdvp - ctime|mtime updated
3152 zfs_do_rename(vnode_t
*sdvp
, vnode_t
**svpp
, struct componentname
*scnp
,
3153 vnode_t
*tdvp
, vnode_t
**tvpp
, struct componentname
*tcnp
,
3158 ASSERT_VOP_ELOCKED(tdvp
, __func__
);
3160 ASSERT_VOP_ELOCKED(*tvpp
, __func__
);
3162 /* Reject renames across filesystems. */
3163 if ((*svpp
)->v_mount
!= tdvp
->v_mount
||
3164 ((*tvpp
) != NULL
&& (*svpp
)->v_mount
!= (*tvpp
)->v_mount
)) {
3165 error
= SET_ERROR(EXDEV
);
3169 if (zfsctl_is_node(tdvp
)) {
3170 error
= SET_ERROR(EXDEV
);
3175 * Lock all four vnodes to ensure safety and semantics of renaming.
3177 error
= zfs_rename_relock(sdvp
, svpp
, tdvp
, tvpp
, scnp
, tcnp
);
3179 /* no vnodes are locked in the case of error here */
3183 error
= zfs_do_rename_impl(sdvp
, svpp
, scnp
, tdvp
, tvpp
, tcnp
, cr
);
3196 zfs_do_rename_impl(vnode_t
*sdvp
, vnode_t
**svpp
, struct componentname
*scnp
,
3197 vnode_t
*tdvp
, vnode_t
**tvpp
, struct componentname
*tcnp
,
3203 znode_t
*tdzp
, *sdzp
, *tzp
, *szp
;
3204 const char *snm
= scnp
->cn_nameptr
;
3205 const char *tnm
= tcnp
->cn_nameptr
;
3210 zfsvfs
= tdzp
->z_zfsvfs
;
3212 if ((error
= zfs_enter_verify_zp(zfsvfs
, tdzp
, FTAG
)) != 0)
3214 if ((error
= zfs_verify_zp(sdzp
)) != 0) {
3215 zfs_exit(zfsvfs
, FTAG
);
3218 zilog
= zfsvfs
->z_log
;
3220 if (zfsvfs
->z_utf8
&& u8_validate(tnm
,
3221 strlen(tnm
), NULL
, U8_VALIDATE_ENTIRE
, &error
) < 0) {
3222 error
= SET_ERROR(EILSEQ
);
3226 /* If source and target are the same file, there is nothing to do. */
3227 if ((*svpp
) == (*tvpp
)) {
3232 if (((*svpp
)->v_type
== VDIR
&& (*svpp
)->v_mountedhere
!= NULL
) ||
3233 ((*tvpp
) != NULL
&& (*tvpp
)->v_type
== VDIR
&&
3234 (*tvpp
)->v_mountedhere
!= NULL
)) {
3235 error
= SET_ERROR(EXDEV
);
3240 if ((error
= zfs_verify_zp(szp
)) != 0) {
3241 zfs_exit(zfsvfs
, FTAG
);
3244 tzp
= *tvpp
== NULL
? NULL
: VTOZ(*tvpp
);
3246 if ((error
= zfs_verify_zp(tzp
)) != 0) {
3247 zfs_exit(zfsvfs
, FTAG
);
3253 * This is to prevent the creation of links into attribute space
3254 * by renaming a linked file into/outof an attribute directory.
3255 * See the comment in zfs_link() for why this is considered bad.
3257 if ((tdzp
->z_pflags
& ZFS_XATTR
) != (sdzp
->z_pflags
& ZFS_XATTR
)) {
3258 error
= SET_ERROR(EINVAL
);
3263 * If we are using project inheritance, means if the directory has
3264 * ZFS_PROJINHERIT set, then its descendant directories will inherit
3265 * not only the project ID, but also the ZFS_PROJINHERIT flag. Under
3266 * such case, we only allow renames into our tree when the project
3269 if (tdzp
->z_pflags
& ZFS_PROJINHERIT
&&
3270 tdzp
->z_projid
!= szp
->z_projid
) {
3271 error
= SET_ERROR(EXDEV
);
3276 * Must have write access at the source to remove the old entry
3277 * and write access at the target to create the new entry.
3278 * Note that if target and source are the same, this can be
3279 * done in a single check.
3281 if ((error
= zfs_zaccess_rename(sdzp
, szp
, tdzp
, tzp
, cr
, NULL
)))
3284 if ((*svpp
)->v_type
== VDIR
) {
3286 * Avoid ".", "..", and aliases of "." for obvious reasons.
3288 if ((scnp
->cn_namelen
== 1 && scnp
->cn_nameptr
[0] == '.') ||
3290 (scnp
->cn_flags
| tcnp
->cn_flags
) & ISDOTDOT
) {
3296 * Check to make sure rename is valid.
3297 * Can't do a move like this: /usr/a/b to /usr/a/b/c/d
3299 if ((error
= zfs_rename_check(szp
, sdzp
, tdzp
)))
3304 * Does target exist?
3308 * Source and target must be the same type.
3310 if ((*svpp
)->v_type
== VDIR
) {
3311 if ((*tvpp
)->v_type
!= VDIR
) {
3312 error
= SET_ERROR(ENOTDIR
);
3320 if ((*tvpp
)->v_type
== VDIR
) {
3321 error
= SET_ERROR(EISDIR
);
3327 vn_seqc_write_begin(*svpp
);
3328 vn_seqc_write_begin(sdvp
);
3330 vn_seqc_write_begin(*tvpp
);
3332 vn_seqc_write_begin(tdvp
);
3334 vnevent_rename_src(*svpp
, sdvp
, scnp
->cn_nameptr
, ct
);
3336 vnevent_rename_dest(*tvpp
, tdvp
, tnm
, ct
);
3339 * notify the target directory if it is not the same
3340 * as source directory.
3343 vnevent_rename_dest_dir(tdvp
, ct
);
3346 tx
= dmu_tx_create(zfsvfs
->z_os
);
3347 dmu_tx_hold_sa(tx
, szp
->z_sa_hdl
, B_FALSE
);
3348 dmu_tx_hold_sa(tx
, sdzp
->z_sa_hdl
, B_FALSE
);
3349 dmu_tx_hold_zap(tx
, sdzp
->z_id
, FALSE
, snm
);
3350 dmu_tx_hold_zap(tx
, tdzp
->z_id
, TRUE
, tnm
);
3352 dmu_tx_hold_sa(tx
, tdzp
->z_sa_hdl
, B_FALSE
);
3353 zfs_sa_upgrade_txholds(tx
, tdzp
);
3356 dmu_tx_hold_sa(tx
, tzp
->z_sa_hdl
, B_FALSE
);
3357 zfs_sa_upgrade_txholds(tx
, tzp
);
3360 zfs_sa_upgrade_txholds(tx
, szp
);
3361 dmu_tx_hold_zap(tx
, zfsvfs
->z_unlinkedobj
, FALSE
, NULL
);
3362 error
= dmu_tx_assign(tx
, TXG_WAIT
);
3368 if (tzp
) /* Attempt to remove the existing target */
3369 error
= zfs_link_destroy(tdzp
, tnm
, tzp
, tx
, 0, NULL
);
3372 error
= zfs_link_create(tdzp
, tnm
, szp
, tx
, ZRENAMING
);
3374 szp
->z_pflags
|= ZFS_AV_MODIFIED
;
3376 error
= sa_update(szp
->z_sa_hdl
, SA_ZPL_FLAGS(zfsvfs
),
3377 (void *)&szp
->z_pflags
, sizeof (uint64_t), tx
);
3380 error
= zfs_link_destroy(sdzp
, snm
, szp
, tx
, ZRENAMING
,
3383 zfs_log_rename(zilog
, tx
, TX_RENAME
, sdzp
,
3384 snm
, tdzp
, tnm
, szp
);
3387 * At this point, we have successfully created
3388 * the target name, but have failed to remove
3389 * the source name. Since the create was done
3390 * with the ZRENAMING flag, there are
3391 * complications; for one, the link count is
3392 * wrong. The easiest way to deal with this
3393 * is to remove the newly created target, and
3394 * return the original error. This must
3395 * succeed; fortunately, it is very unlikely to
3396 * fail, since we just created it.
3398 VERIFY0(zfs_link_destroy(tdzp
, tnm
, szp
, tx
,
3403 cache_vop_rename(sdvp
, *svpp
, tdvp
, *tvpp
, scnp
, tcnp
);
3410 vn_seqc_write_end(*svpp
);
3411 vn_seqc_write_end(sdvp
);
3413 vn_seqc_write_end(*tvpp
);
3415 vn_seqc_write_end(tdvp
);
3418 if (error
== 0 && zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
)
3419 zil_commit(zilog
, 0);
3420 zfs_exit(zfsvfs
, FTAG
);
3426 zfs_rename(znode_t
*sdzp
, const char *sname
, znode_t
*tdzp
, const char *tname
,
3427 cred_t
*cr
, int flags
, uint64_t rflags
, vattr_t
*wo_vap
, zidmap_t
*mnt_ns
)
3429 struct componentname scn
, tcn
;
3430 vnode_t
*sdvp
, *tdvp
;
3435 if (rflags
!= 0 || wo_vap
!= NULL
)
3436 return (SET_ERROR(EINVAL
));
3440 error
= zfs_lookup_internal(sdzp
, sname
, &svp
, &scn
, DELETE
);
3441 if (sdzp
->z_zfsvfs
->z_replay
== B_FALSE
)
3447 vn_lock(tdvp
, LK_EXCLUSIVE
| LK_RETRY
);
3448 error
= zfs_lookup_internal(tdzp
, tname
, &tvp
, &tcn
, RENAME
);
3449 if (error
== EJUSTRETURN
)
3451 else if (error
!= 0) {
3456 error
= zfs_do_rename(sdvp
, &svp
, &scn
, tdvp
, &tvp
, &tcn
, cr
);
3467 * Insert the indicated symbolic reference entry into the directory.
3469 * IN: dvp - Directory to contain new symbolic link.
3470 * link - Name for new symlink entry.
3471 * vap - Attributes of new entry.
3472 * cr - credentials of caller.
3473 * ct - caller context
3474 * flags - case flags
3475 * mnt_ns - Unused on FreeBSD
3477 * RETURN: 0 on success, error code on failure.
3480 * dvp - ctime|mtime updated
3483 zfs_symlink(znode_t
*dzp
, const char *name
, vattr_t
*vap
,
3484 const char *link
, znode_t
**zpp
, cred_t
*cr
, int flags
, zidmap_t
*mnt_ns
)
3489 zfsvfs_t
*zfsvfs
= dzp
->z_zfsvfs
;
3491 uint64_t len
= strlen(link
);
3493 zfs_acl_ids_t acl_ids
;
3494 boolean_t fuid_dirtied
;
3495 uint64_t txtype
= TX_SYMLINK
;
3497 ASSERT3S(vap
->va_type
, ==, VLNK
);
3499 if ((error
= zfs_enter_verify_zp(zfsvfs
, dzp
, FTAG
)) != 0)
3501 zilog
= zfsvfs
->z_log
;
3503 if (zfsvfs
->z_utf8
&& u8_validate(name
, strlen(name
),
3504 NULL
, U8_VALIDATE_ENTIRE
, &error
) < 0) {
3505 zfs_exit(zfsvfs
, FTAG
);
3506 return (SET_ERROR(EILSEQ
));
3509 if (len
> MAXPATHLEN
) {
3510 zfs_exit(zfsvfs
, FTAG
);
3511 return (SET_ERROR(ENAMETOOLONG
));
3514 if ((error
= zfs_acl_ids_create(dzp
, 0,
3515 vap
, cr
, NULL
, &acl_ids
, NULL
)) != 0) {
3516 zfs_exit(zfsvfs
, FTAG
);
3521 * Attempt to lock directory; fail if entry already exists.
3523 error
= zfs_dirent_lookup(dzp
, name
, &zp
, ZNEW
);
3525 zfs_acl_ids_free(&acl_ids
);
3526 zfs_exit(zfsvfs
, FTAG
);
3530 if ((error
= zfs_zaccess(dzp
, ACE_ADD_FILE
, 0, B_FALSE
, cr
, mnt_ns
))) {
3531 zfs_acl_ids_free(&acl_ids
);
3532 zfs_exit(zfsvfs
, FTAG
);
3536 if (zfs_acl_ids_overquota(zfsvfs
, &acl_ids
,
3538 zfs_acl_ids_free(&acl_ids
);
3539 zfs_exit(zfsvfs
, FTAG
);
3540 return (SET_ERROR(EDQUOT
));
3543 getnewvnode_reserve_();
3544 tx
= dmu_tx_create(zfsvfs
->z_os
);
3545 fuid_dirtied
= zfsvfs
->z_fuid_dirty
;
3546 dmu_tx_hold_write(tx
, DMU_NEW_OBJECT
, 0, MAX(1, len
));
3547 dmu_tx_hold_zap(tx
, dzp
->z_id
, TRUE
, name
);
3548 dmu_tx_hold_sa_create(tx
, acl_ids
.z_aclp
->z_acl_bytes
+
3549 ZFS_SA_BASE_ATTR_SIZE
+ len
);
3550 dmu_tx_hold_sa(tx
, dzp
->z_sa_hdl
, B_FALSE
);
3551 if (!zfsvfs
->z_use_sa
&& acl_ids
.z_aclp
->z_acl_bytes
> ZFS_ACE_SPACE
) {
3552 dmu_tx_hold_write(tx
, DMU_NEW_OBJECT
, 0,
3553 acl_ids
.z_aclp
->z_acl_bytes
);
3556 zfs_fuid_txhold(zfsvfs
, tx
);
3557 error
= dmu_tx_assign(tx
, TXG_WAIT
);
3559 zfs_acl_ids_free(&acl_ids
);
3561 getnewvnode_drop_reserve();
3562 zfs_exit(zfsvfs
, FTAG
);
3567 * Create a new object for the symlink.
3568 * for version 4 ZPL datasets the symlink will be an SA attribute
3570 zfs_mknode(dzp
, vap
, tx
, cr
, 0, &zp
, &acl_ids
);
3573 zfs_fuid_sync(zfsvfs
, tx
);
3576 error
= sa_update(zp
->z_sa_hdl
, SA_ZPL_SYMLINK(zfsvfs
),
3577 __DECONST(void *, link
), len
, tx
);
3579 zfs_sa_symlink(zp
, __DECONST(char *, link
), len
, tx
);
3582 (void) sa_update(zp
->z_sa_hdl
, SA_ZPL_SIZE(zfsvfs
),
3583 &zp
->z_size
, sizeof (zp
->z_size
), tx
);
3585 * Insert the new object into the directory.
3587 (void) zfs_link_create(dzp
, name
, zp
, tx
, ZNEW
);
3589 zfs_log_symlink(zilog
, tx
, txtype
, dzp
, zp
, name
, link
);
3592 zfs_acl_ids_free(&acl_ids
);
3596 getnewvnode_drop_reserve();
3598 if (zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
)
3599 zil_commit(zilog
, 0);
3601 zfs_exit(zfsvfs
, FTAG
);
3606 * Return, in the buffer contained in the provided uio structure,
3607 * the symbolic path referred to by vp.
3609 * IN: vp - vnode of symbolic link.
3610 * uio - structure to contain the link path.
3611 * cr - credentials of caller.
3612 * ct - caller context
3614 * OUT: uio - structure containing the link path.
3616 * RETURN: 0 on success, error code on failure.
3619 * vp - atime updated
3622 zfs_readlink(vnode_t
*vp
, zfs_uio_t
*uio
, cred_t
*cr
, caller_context_t
*ct
)
3624 (void) cr
, (void) ct
;
3625 znode_t
*zp
= VTOZ(vp
);
3626 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
3629 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
3633 error
= sa_lookup_uio(zp
->z_sa_hdl
,
3634 SA_ZPL_SYMLINK(zfsvfs
), uio
);
3636 error
= zfs_sa_readlink(zp
, uio
);
3638 ZFS_ACCESSTIME_STAMP(zfsvfs
, zp
);
3640 zfs_exit(zfsvfs
, FTAG
);
3645 * Insert a new entry into directory tdvp referencing svp.
3647 * IN: tdvp - Directory to contain new entry.
3648 * svp - vnode of new entry.
3649 * name - name of new entry.
3650 * cr - credentials of caller.
3652 * RETURN: 0 on success, error code on failure.
3655 * tdvp - ctime|mtime updated
3656 * svp - ctime updated
3659 zfs_link(znode_t
*tdzp
, znode_t
*szp
, const char *name
, cred_t
*cr
,
3664 zfsvfs_t
*zfsvfs
= tdzp
->z_zfsvfs
;
3671 ASSERT3S(ZTOV(tdzp
)->v_type
, ==, VDIR
);
3673 if ((error
= zfs_enter_verify_zp(zfsvfs
, tdzp
, FTAG
)) != 0)
3675 zilog
= zfsvfs
->z_log
;
3678 * POSIX dictates that we return EPERM here.
3679 * Better choices include ENOTSUP or EISDIR.
3681 if (ZTOV(szp
)->v_type
== VDIR
) {
3682 zfs_exit(zfsvfs
, FTAG
);
3683 return (SET_ERROR(EPERM
));
3686 if ((error
= zfs_verify_zp(szp
)) != 0) {
3687 zfs_exit(zfsvfs
, FTAG
);
3692 * If we are using project inheritance, means if the directory has
3693 * ZFS_PROJINHERIT set, then its descendant directories will inherit
3694 * not only the project ID, but also the ZFS_PROJINHERIT flag. Under
3695 * such case, we only allow hard link creation in our tree when the
3696 * project IDs are the same.
3698 if (tdzp
->z_pflags
& ZFS_PROJINHERIT
&&
3699 tdzp
->z_projid
!= szp
->z_projid
) {
3700 zfs_exit(zfsvfs
, FTAG
);
3701 return (SET_ERROR(EXDEV
));
3704 if (szp
->z_pflags
& (ZFS_APPENDONLY
|
3705 ZFS_IMMUTABLE
| ZFS_READONLY
)) {
3706 zfs_exit(zfsvfs
, FTAG
);
3707 return (SET_ERROR(EPERM
));
3710 /* Prevent links to .zfs/shares files */
3712 if ((error
= sa_lookup(szp
->z_sa_hdl
, SA_ZPL_PARENT(zfsvfs
),
3713 &parent
, sizeof (uint64_t))) != 0) {
3714 zfs_exit(zfsvfs
, FTAG
);
3717 if (parent
== zfsvfs
->z_shares_dir
) {
3718 zfs_exit(zfsvfs
, FTAG
);
3719 return (SET_ERROR(EPERM
));
3722 if (zfsvfs
->z_utf8
&& u8_validate(name
,
3723 strlen(name
), NULL
, U8_VALIDATE_ENTIRE
, &error
) < 0) {
3724 zfs_exit(zfsvfs
, FTAG
);
3725 return (SET_ERROR(EILSEQ
));
3729 * We do not support links between attributes and non-attributes
3730 * because of the potential security risk of creating links
3731 * into "normal" file space in order to circumvent restrictions
3732 * imposed in attribute space.
3734 if ((szp
->z_pflags
& ZFS_XATTR
) != (tdzp
->z_pflags
& ZFS_XATTR
)) {
3735 zfs_exit(zfsvfs
, FTAG
);
3736 return (SET_ERROR(EINVAL
));
3740 owner
= zfs_fuid_map_id(zfsvfs
, szp
->z_uid
, cr
, ZFS_OWNER
);
3741 if (owner
!= crgetuid(cr
) && secpolicy_basic_link(ZTOV(szp
), cr
) != 0) {
3742 zfs_exit(zfsvfs
, FTAG
);
3743 return (SET_ERROR(EPERM
));
3746 if ((error
= zfs_zaccess(tdzp
, ACE_ADD_FILE
, 0, B_FALSE
, cr
, NULL
))) {
3747 zfs_exit(zfsvfs
, FTAG
);
3752 * Attempt to lock directory; fail if entry already exists.
3754 error
= zfs_dirent_lookup(tdzp
, name
, &tzp
, ZNEW
);
3756 zfs_exit(zfsvfs
, FTAG
);
3760 tx
= dmu_tx_create(zfsvfs
->z_os
);
3761 dmu_tx_hold_sa(tx
, szp
->z_sa_hdl
, B_FALSE
);
3762 dmu_tx_hold_zap(tx
, tdzp
->z_id
, TRUE
, name
);
3763 zfs_sa_upgrade_txholds(tx
, szp
);
3764 zfs_sa_upgrade_txholds(tx
, tdzp
);
3765 error
= dmu_tx_assign(tx
, TXG_WAIT
);
3768 zfs_exit(zfsvfs
, FTAG
);
3772 error
= zfs_link_create(tdzp
, name
, szp
, tx
, 0);
3775 uint64_t txtype
= TX_LINK
;
3776 zfs_log_link(zilog
, tx
, txtype
, tdzp
, szp
, name
);
3782 vnevent_link(ZTOV(szp
), ct
);
3785 if (zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
)
3786 zil_commit(zilog
, 0);
3788 zfs_exit(zfsvfs
, FTAG
);
3793 * Free or allocate space in a file. Currently, this function only
3794 * supports the `F_FREESP' command. However, this command is somewhat
3795 * misnamed, as its functionality includes the ability to allocate as
3796 * well as free space.
3798 * IN: ip - inode of file to free data in.
3799 * cmd - action to take (only F_FREESP supported).
3800 * bfp - section of file to free/alloc.
3801 * flag - current file open mode flags.
3802 * offset - current file offset.
3803 * cr - credentials of caller.
3805 * RETURN: 0 on success, error code on failure.
3808 * ip - ctime|mtime updated
3811 zfs_space(znode_t
*zp
, int cmd
, flock64_t
*bfp
, int flag
,
3812 offset_t offset
, cred_t
*cr
)
3815 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
3819 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
3822 if (cmd
!= F_FREESP
) {
3823 zfs_exit(zfsvfs
, FTAG
);
3824 return (SET_ERROR(EINVAL
));
3828 * Callers might not be able to detect properly that we are read-only,
3829 * so check it explicitly here.
3831 if (zfs_is_readonly(zfsvfs
)) {
3832 zfs_exit(zfsvfs
, FTAG
);
3833 return (SET_ERROR(EROFS
));
3836 if (bfp
->l_len
< 0) {
3837 zfs_exit(zfsvfs
, FTAG
);
3838 return (SET_ERROR(EINVAL
));
3842 * Permissions aren't checked on Solaris because on this OS
3843 * zfs_space() can only be called with an opened file handle.
3844 * On Linux we can get here through truncate_range() which
3845 * operates directly on inodes, so we need to check access rights.
3847 if ((error
= zfs_zaccess(zp
, ACE_WRITE_DATA
, 0, B_FALSE
, cr
, NULL
))) {
3848 zfs_exit(zfsvfs
, FTAG
);
3853 len
= bfp
->l_len
; /* 0 means from off to end of file */
3855 error
= zfs_freesp(zp
, off
, len
, flag
, TRUE
);
3857 zfs_exit(zfsvfs
, FTAG
);
3862 zfs_inactive(vnode_t
*vp
, cred_t
*cr
, caller_context_t
*ct
)
3864 (void) cr
, (void) ct
;
3865 znode_t
*zp
= VTOZ(vp
);
3866 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
3869 ZFS_TEARDOWN_INACTIVE_ENTER_READ(zfsvfs
);
3870 if (zp
->z_sa_hdl
== NULL
) {
3872 * The fs has been unmounted, or we did a
3873 * suspend/resume and this file no longer exists.
3875 ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs
);
3880 if (zp
->z_unlinked
) {
3882 * Fast path to recycle a vnode of a removed file.
3884 ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs
);
3889 if (zp
->z_atime_dirty
&& zp
->z_unlinked
== 0) {
3890 dmu_tx_t
*tx
= dmu_tx_create(zfsvfs
->z_os
);
3892 dmu_tx_hold_sa(tx
, zp
->z_sa_hdl
, B_FALSE
);
3893 zfs_sa_upgrade_txholds(tx
, zp
);
3894 error
= dmu_tx_assign(tx
, TXG_WAIT
);
3898 (void) sa_update(zp
->z_sa_hdl
, SA_ZPL_ATIME(zfsvfs
),
3899 (void *)&zp
->z_atime
, sizeof (zp
->z_atime
), tx
);
3900 zp
->z_atime_dirty
= 0;
3904 ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs
);
3908 _Static_assert(sizeof (struct zfid_short
) <= sizeof (struct fid
),
3909 "struct zfid_short bigger than struct fid");
3910 _Static_assert(sizeof (struct zfid_long
) <= sizeof (struct fid
),
3911 "struct zfid_long bigger than struct fid");
3914 zfs_fid(vnode_t
*vp
, fid_t
*fidp
, caller_context_t
*ct
)
3917 znode_t
*zp
= VTOZ(vp
);
3918 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
3921 uint64_t object
= zp
->z_id
;
3925 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
3928 if ((error
= sa_lookup(zp
->z_sa_hdl
, SA_ZPL_GEN(zfsvfs
),
3929 &gen64
, sizeof (uint64_t))) != 0) {
3930 zfs_exit(zfsvfs
, FTAG
);
3934 gen
= (uint32_t)gen64
;
3936 size
= (zfsvfs
->z_parent
!= zfsvfs
) ? LONG_FID_LEN
: SHORT_FID_LEN
;
3937 fidp
->fid_len
= size
;
3939 zfid
= (zfid_short_t
*)fidp
;
3941 zfid
->zf_len
= size
;
3943 for (i
= 0; i
< sizeof (zfid
->zf_object
); i
++)
3944 zfid
->zf_object
[i
] = (uint8_t)(object
>> (8 * i
));
3946 /* Must have a non-zero generation number to distinguish from .zfs */
3949 for (i
= 0; i
< sizeof (zfid
->zf_gen
); i
++)
3950 zfid
->zf_gen
[i
] = (uint8_t)(gen
>> (8 * i
));
3952 if (size
== LONG_FID_LEN
) {
3953 uint64_t objsetid
= dmu_objset_id(zfsvfs
->z_os
);
3956 zlfid
= (zfid_long_t
*)fidp
;
3958 for (i
= 0; i
< sizeof (zlfid
->zf_setid
); i
++)
3959 zlfid
->zf_setid
[i
] = (uint8_t)(objsetid
>> (8 * i
));
3961 /* XXX - this should be the generation number for the objset */
3962 for (i
= 0; i
< sizeof (zlfid
->zf_setgen
); i
++)
3963 zlfid
->zf_setgen
[i
] = 0;
3966 zfs_exit(zfsvfs
, FTAG
);
3971 zfs_pathconf(vnode_t
*vp
, int cmd
, ulong_t
*valp
, cred_t
*cr
,
3972 caller_context_t
*ct
)
3980 *valp
= MIN(LONG_MAX
, ZFS_LINK_MAX
);
3983 case _PC_FILESIZEBITS
:
3986 case _PC_MIN_HOLE_SIZE
:
3987 *valp
= (int)SPA_MINBLOCKSIZE
;
3989 case _PC_ACL_EXTENDED
:
3990 #if 0 /* POSIX ACLs are not implemented for ZFS on FreeBSD yet. */
3992 zfsvfs
= zp
->z_zfsvfs
;
3993 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
3995 *valp
= zfsvfs
->z_acl_type
== ZFSACLTYPE_POSIX
? 1 : 0;
3996 zfs_exit(zfsvfs
, FTAG
);
4004 zfsvfs
= zp
->z_zfsvfs
;
4005 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
4007 *valp
= zfsvfs
->z_acl_type
== ZFS_ACLTYPE_NFSV4
? 1 : 0;
4008 zfs_exit(zfsvfs
, FTAG
);
4011 case _PC_ACL_PATH_MAX
:
4012 *valp
= ACL_MAX_ENTRIES
;
4016 return (EOPNOTSUPP
);
4021 zfs_getpages(struct vnode
*vp
, vm_page_t
*ma
, int count
, int *rbehind
,
4024 znode_t
*zp
= VTOZ(vp
);
4025 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
4026 zfs_locked_range_t
*lr
;
4028 off_t start
, end
, obj_size
;
4030 int pgsin_b
, pgsin_a
;
4033 if (zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
) != 0)
4034 return (zfs_vm_pagerret_error
);
4036 start
= IDX_TO_OFF(ma
[0]->pindex
);
4037 end
= IDX_TO_OFF(ma
[count
- 1]->pindex
+ 1);
4040 * Lock a range covering all required and optional pages.
4041 * Note that we need to handle the case of the block size growing.
4044 blksz
= zp
->z_blksz
;
4045 lr
= zfs_rangelock_tryenter(&zp
->z_rangelock
,
4046 rounddown(start
, blksz
),
4047 roundup(end
, blksz
) - rounddown(start
, blksz
), RL_READER
);
4049 if (rahead
!= NULL
) {
4053 if (rbehind
!= NULL
) {
4059 if (blksz
== zp
->z_blksz
)
4061 zfs_rangelock_exit(lr
);
4064 object
= ma
[0]->object
;
4065 zfs_vmobject_wlock(object
);
4066 obj_size
= object
->un_pager
.vnp
.vnp_size
;
4067 zfs_vmobject_wunlock(object
);
4068 if (IDX_TO_OFF(ma
[count
- 1]->pindex
) >= obj_size
) {
4070 zfs_rangelock_exit(lr
);
4071 zfs_exit(zfsvfs
, FTAG
);
4072 return (zfs_vm_pagerret_bad
);
4076 if (rbehind
!= NULL
) {
4077 pgsin_b
= OFF_TO_IDX(start
- rounddown(start
, blksz
));
4078 pgsin_b
= MIN(*rbehind
, pgsin_b
);
4082 if (rahead
!= NULL
) {
4083 pgsin_a
= OFF_TO_IDX(roundup(end
, blksz
) - end
);
4084 if (end
+ IDX_TO_OFF(pgsin_a
) >= obj_size
)
4085 pgsin_a
= OFF_TO_IDX(round_page(obj_size
) - end
);
4086 pgsin_a
= MIN(*rahead
, pgsin_a
);
4090 * NB: we need to pass the exact byte size of the data that we expect
4091 * to read after accounting for the file size. This is required because
4092 * ZFS will panic if we request DMU to read beyond the end of the last
4095 error
= dmu_read_pages(zfsvfs
->z_os
, zp
->z_id
, ma
, count
, &pgsin_b
,
4096 &pgsin_a
, MIN(end
, obj_size
) - (end
- PAGE_SIZE
));
4099 zfs_rangelock_exit(lr
);
4100 ZFS_ACCESSTIME_STAMP(zfsvfs
, zp
);
4102 dataset_kstats_update_read_kstats(&zfsvfs
->z_kstat
, count
*PAGE_SIZE
);
4104 zfs_exit(zfsvfs
, FTAG
);
4107 return (zfs_vm_pagerret_error
);
4109 VM_CNT_INC(v_vnodein
);
4110 VM_CNT_ADD(v_vnodepgsin
, count
+ pgsin_b
+ pgsin_a
);
4111 if (rbehind
!= NULL
)
4115 return (zfs_vm_pagerret_ok
);
4118 #ifndef _SYS_SYSPROTO_H_
4119 struct vop_getpages_args
{
4129 zfs_freebsd_getpages(struct vop_getpages_args
*ap
)
4132 return (zfs_getpages(ap
->a_vp
, ap
->a_m
, ap
->a_count
, ap
->a_rbehind
,
4137 zfs_putpages(struct vnode
*vp
, vm_page_t
*ma
, size_t len
, int flags
,
4140 znode_t
*zp
= VTOZ(vp
);
4141 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
4142 zfs_locked_range_t
*lr
;
4150 vm_ooffset_t lo_off
;
4158 object
= vp
->v_object
;
4159 KASSERT(ma
[0]->object
== object
, ("mismatching object"));
4160 KASSERT(len
> 0 && (len
& PAGE_MASK
) == 0, ("unexpected length"));
4164 for (i
= 0; i
< pcount
; i
++)
4165 rtvals
[i
] = zfs_vm_pagerret_error
;
4167 if (zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
) != 0)
4168 return (zfs_vm_pagerret_error
);
4170 off
= IDX_TO_OFF(ma
[0]->pindex
);
4171 blksz
= zp
->z_blksz
;
4172 lo_off
= rounddown(off
, blksz
);
4173 lo_len
= roundup(len
+ (off
- lo_off
), blksz
);
4174 lr
= zfs_rangelock_enter(&zp
->z_rangelock
, lo_off
, lo_len
, RL_WRITER
);
4176 zfs_vmobject_wlock(object
);
4177 if (len
+ off
> object
->un_pager
.vnp
.vnp_size
) {
4178 if (object
->un_pager
.vnp
.vnp_size
> off
) {
4181 len
= object
->un_pager
.vnp
.vnp_size
- off
;
4183 if ((pgoff
= (int)len
& PAGE_MASK
) != 0) {
4185 * If the object is locked and the following
4186 * conditions hold, then the page's dirty
4187 * field cannot be concurrently changed by a
4191 vm_page_assert_sbusied(m
);
4192 KASSERT(!pmap_page_is_write_mapped(m
),
4193 ("zfs_putpages: page %p is not read-only",
4195 vm_page_clear_dirty(m
, pgoff
, PAGE_SIZE
-
4202 if (ncount
< pcount
) {
4203 for (i
= ncount
; i
< pcount
; i
++) {
4204 rtvals
[i
] = zfs_vm_pagerret_bad
;
4208 zfs_vmobject_wunlock(object
);
4210 boolean_t commit
= (flags
& (zfs_vm_pagerput_sync
|
4211 zfs_vm_pagerput_inval
)) != 0 ||
4212 zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
;
4217 if (zfs_id_overblockquota(zfsvfs
, DMU_USERUSED_OBJECT
, zp
->z_uid
) ||
4218 zfs_id_overblockquota(zfsvfs
, DMU_GROUPUSED_OBJECT
, zp
->z_gid
) ||
4219 (zp
->z_projid
!= ZFS_DEFAULT_PROJID
&&
4220 zfs_id_overblockquota(zfsvfs
, DMU_PROJECTUSED_OBJECT
,
4225 tx
= dmu_tx_create(zfsvfs
->z_os
);
4226 dmu_tx_hold_write(tx
, zp
->z_id
, off
, len
);
4228 dmu_tx_hold_sa(tx
, zp
->z_sa_hdl
, B_FALSE
);
4229 zfs_sa_upgrade_txholds(tx
, zp
);
4230 err
= dmu_tx_assign(tx
, TXG_WAIT
);
4236 if (zp
->z_blksz
< PAGE_SIZE
) {
4237 for (i
= 0; len
> 0; off
+= tocopy
, len
-= tocopy
, i
++) {
4238 tocopy
= len
> PAGE_SIZE
? PAGE_SIZE
: len
;
4239 va
= zfs_map_page(ma
[i
], &sf
);
4240 dmu_write(zfsvfs
->z_os
, zp
->z_id
, off
, tocopy
, va
, tx
);
4244 err
= dmu_write_pages(zfsvfs
->z_os
, zp
->z_id
, off
, len
, ma
, tx
);
4248 uint64_t mtime
[2], ctime
[2];
4249 sa_bulk_attr_t bulk
[3];
4252 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_MTIME(zfsvfs
), NULL
,
4254 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_CTIME(zfsvfs
), NULL
,
4256 SA_ADD_BULK_ATTR(bulk
, count
, SA_ZPL_FLAGS(zfsvfs
), NULL
,
4258 zfs_tstamp_update_setup(zp
, CONTENT_MODIFIED
, mtime
, ctime
);
4259 err
= sa_bulk_update(zp
->z_sa_hdl
, bulk
, count
, tx
);
4262 * XXX we should be passing a callback to undirty
4263 * but that would make the locking messier
4265 zfs_log_write(zfsvfs
->z_log
, tx
, TX_WRITE
, zp
, off
,
4266 len
, commit
, NULL
, NULL
);
4268 zfs_vmobject_wlock(object
);
4269 for (i
= 0; i
< ncount
; i
++) {
4270 rtvals
[i
] = zfs_vm_pagerret_ok
;
4271 vm_page_undirty(ma
[i
]);
4273 zfs_vmobject_wunlock(object
);
4274 VM_CNT_INC(v_vnodeout
);
4275 VM_CNT_ADD(v_vnodepgsout
, ncount
);
4280 zfs_rangelock_exit(lr
);
4282 zil_commit(zfsvfs
->z_log
, zp
->z_id
);
4284 dataset_kstats_update_write_kstats(&zfsvfs
->z_kstat
, len
);
4286 zfs_exit(zfsvfs
, FTAG
);
4290 #ifndef _SYS_SYSPROTO_H_
4291 struct vop_putpages_args
{
4301 zfs_freebsd_putpages(struct vop_putpages_args
*ap
)
4304 return (zfs_putpages(ap
->a_vp
, ap
->a_m
, ap
->a_count
, ap
->a_sync
,
4308 #ifndef _SYS_SYSPROTO_H_
4309 struct vop_bmap_args
{
4312 struct bufobj
**a_bop
;
4320 zfs_freebsd_bmap(struct vop_bmap_args
*ap
)
4323 if (ap
->a_bop
!= NULL
)
4324 *ap
->a_bop
= &ap
->a_vp
->v_bufobj
;
4325 if (ap
->a_bnp
!= NULL
)
4326 *ap
->a_bnp
= ap
->a_bn
;
4327 if (ap
->a_runp
!= NULL
)
4329 if (ap
->a_runb
!= NULL
)
4335 #ifndef _SYS_SYSPROTO_H_
4336 struct vop_open_args
{
4339 struct ucred
*a_cred
;
4340 struct thread
*a_td
;
4345 zfs_freebsd_open(struct vop_open_args
*ap
)
4347 vnode_t
*vp
= ap
->a_vp
;
4348 znode_t
*zp
= VTOZ(vp
);
4351 error
= zfs_open(&vp
, ap
->a_mode
, ap
->a_cred
);
4353 vnode_create_vobject(vp
, zp
->z_size
, ap
->a_td
);
4357 #ifndef _SYS_SYSPROTO_H_
4358 struct vop_close_args
{
4361 struct ucred
*a_cred
;
4362 struct thread
*a_td
;
4367 zfs_freebsd_close(struct vop_close_args
*ap
)
4370 return (zfs_close(ap
->a_vp
, ap
->a_fflag
, 1, 0, ap
->a_cred
));
4373 #ifndef _SYS_SYSPROTO_H_
4374 struct vop_ioctl_args
{
4385 zfs_freebsd_ioctl(struct vop_ioctl_args
*ap
)
4388 return (zfs_ioctl(ap
->a_vp
, ap
->a_command
, (intptr_t)ap
->a_data
,
4389 ap
->a_fflag
, ap
->a_cred
, NULL
));
4393 ioflags(int ioflags
)
4397 if (ioflags
& IO_APPEND
)
4399 if (ioflags
& IO_NDELAY
)
4400 flags
|= O_NONBLOCK
;
4401 if (ioflags
& IO_SYNC
)
4407 #ifndef _SYS_SYSPROTO_H_
4408 struct vop_read_args
{
4412 struct ucred
*a_cred
;
4417 zfs_freebsd_read(struct vop_read_args
*ap
)
4420 zfs_uio_init(&uio
, ap
->a_uio
);
4421 return (zfs_read(VTOZ(ap
->a_vp
), &uio
, ioflags(ap
->a_ioflag
),
4425 #ifndef _SYS_SYSPROTO_H_
4426 struct vop_write_args
{
4430 struct ucred
*a_cred
;
4435 zfs_freebsd_write(struct vop_write_args
*ap
)
4438 zfs_uio_init(&uio
, ap
->a_uio
);
4439 return (zfs_write(VTOZ(ap
->a_vp
), &uio
, ioflags(ap
->a_ioflag
),
4443 #if __FreeBSD_version >= 1300102
4445 * VOP_FPLOOKUP_VEXEC routines are subject to special circumstances, see
4446 * the comment above cache_fplookup for details.
4449 zfs_freebsd_fplookup_vexec(struct vop_fplookup_vexec_args
*v
)
4457 if (__predict_false(zp
== NULL
))
4459 pflags
= atomic_load_64(&zp
->z_pflags
);
4460 if (pflags
& ZFS_AV_QUARANTINED
)
4462 if (pflags
& ZFS_XATTR
)
4464 if ((pflags
& ZFS_NO_EXECS_DENIED
) == 0)
4470 #if __FreeBSD_version >= 1300139
4472 zfs_freebsd_fplookup_symlink(struct vop_fplookup_symlink_args
*v
)
4480 if (__predict_false(zp
== NULL
)) {
4484 target
= atomic_load_consume_ptr(&zp
->z_cached_symlink
);
4485 if (target
== NULL
) {
4488 return (cache_symlink_resolve(v
->a_fpl
, target
, strlen(target
)));
4492 #ifndef _SYS_SYSPROTO_H_
4493 struct vop_access_args
{
4495 accmode_t a_accmode
;
4496 struct ucred
*a_cred
;
4497 struct thread
*a_td
;
4502 zfs_freebsd_access(struct vop_access_args
*ap
)
4504 vnode_t
*vp
= ap
->a_vp
;
4505 znode_t
*zp
= VTOZ(vp
);
4510 if (ap
->a_accmode
== VEXEC
) {
4511 if (zfs_fastaccesschk_execute(zp
, ap
->a_cred
) == 0)
4516 * ZFS itself only knowns about VREAD, VWRITE, VEXEC and VAPPEND,
4518 accmode
= ap
->a_accmode
& (VREAD
|VWRITE
|VEXEC
|VAPPEND
);
4520 error
= zfs_access(zp
, accmode
, 0, ap
->a_cred
);
4523 * VADMIN has to be handled by vaccess().
4526 accmode
= ap
->a_accmode
& ~(VREAD
|VWRITE
|VEXEC
|VAPPEND
);
4528 #if __FreeBSD_version >= 1300105
4529 error
= vaccess(vp
->v_type
, zp
->z_mode
, zp
->z_uid
,
4530 zp
->z_gid
, accmode
, ap
->a_cred
);
4532 error
= vaccess(vp
->v_type
, zp
->z_mode
, zp
->z_uid
,
4533 zp
->z_gid
, accmode
, ap
->a_cred
, NULL
);
4539 * For VEXEC, ensure that at least one execute bit is set for
4542 if (error
== 0 && (ap
->a_accmode
& VEXEC
) != 0 && vp
->v_type
!= VDIR
&&
4543 (zp
->z_mode
& (S_IXUSR
| S_IXGRP
| S_IXOTH
)) == 0) {
4550 #ifndef _SYS_SYSPROTO_H_
4551 struct vop_lookup_args
{
4552 struct vnode
*a_dvp
;
4553 struct vnode
**a_vpp
;
4554 struct componentname
*a_cnp
;
4559 zfs_freebsd_lookup(struct vop_lookup_args
*ap
, boolean_t cached
)
4561 struct componentname
*cnp
= ap
->a_cnp
;
4562 char nm
[NAME_MAX
+ 1];
4564 ASSERT3U(cnp
->cn_namelen
, <, sizeof (nm
));
4565 strlcpy(nm
, cnp
->cn_nameptr
, MIN(cnp
->cn_namelen
+ 1, sizeof (nm
)));
4567 return (zfs_lookup(ap
->a_dvp
, nm
, ap
->a_vpp
, cnp
, cnp
->cn_nameiop
,
4568 cnp
->cn_cred
, 0, cached
));
4572 zfs_freebsd_cachedlookup(struct vop_cachedlookup_args
*ap
)
4575 return (zfs_freebsd_lookup((struct vop_lookup_args
*)ap
, B_TRUE
));
4578 #ifndef _SYS_SYSPROTO_H_
4579 struct vop_lookup_args
{
4580 struct vnode
*a_dvp
;
4581 struct vnode
**a_vpp
;
4582 struct componentname
*a_cnp
;
4587 zfs_cache_lookup(struct vop_lookup_args
*ap
)
4591 zfsvfs
= ap
->a_dvp
->v_mount
->mnt_data
;
4592 if (zfsvfs
->z_use_namecache
)
4593 return (vfs_cache_lookup(ap
));
4595 return (zfs_freebsd_lookup(ap
, B_FALSE
));
4598 #ifndef _SYS_SYSPROTO_H_
4599 struct vop_create_args
{
4600 struct vnode
*a_dvp
;
4601 struct vnode
**a_vpp
;
4602 struct componentname
*a_cnp
;
4603 struct vattr
*a_vap
;
4608 zfs_freebsd_create(struct vop_create_args
*ap
)
4611 struct componentname
*cnp
= ap
->a_cnp
;
4612 vattr_t
*vap
= ap
->a_vap
;
4616 #if __FreeBSD_version < 1400068
4617 ASSERT(cnp
->cn_flags
& SAVENAME
);
4620 vattr_init_mask(vap
);
4621 mode
= vap
->va_mode
& ALLPERMS
;
4622 zfsvfs
= ap
->a_dvp
->v_mount
->mnt_data
;
4625 rc
= zfs_create(VTOZ(ap
->a_dvp
), cnp
->cn_nameptr
, vap
, 0, mode
,
4626 &zp
, cnp
->cn_cred
, 0 /* flag */, NULL
/* vsecattr */, NULL
);
4628 *ap
->a_vpp
= ZTOV(zp
);
4629 if (zfsvfs
->z_use_namecache
&&
4630 rc
== 0 && (cnp
->cn_flags
& MAKEENTRY
) != 0)
4631 cache_enter(ap
->a_dvp
, *ap
->a_vpp
, cnp
);
4636 #ifndef _SYS_SYSPROTO_H_
4637 struct vop_remove_args
{
4638 struct vnode
*a_dvp
;
4640 struct componentname
*a_cnp
;
4645 zfs_freebsd_remove(struct vop_remove_args
*ap
)
4648 #if __FreeBSD_version < 1400068
4649 ASSERT(ap
->a_cnp
->cn_flags
& SAVENAME
);
4652 return (zfs_remove_(ap
->a_dvp
, ap
->a_vp
, ap
->a_cnp
->cn_nameptr
,
4653 ap
->a_cnp
->cn_cred
));
4656 #ifndef _SYS_SYSPROTO_H_
4657 struct vop_mkdir_args
{
4658 struct vnode
*a_dvp
;
4659 struct vnode
**a_vpp
;
4660 struct componentname
*a_cnp
;
4661 struct vattr
*a_vap
;
4666 zfs_freebsd_mkdir(struct vop_mkdir_args
*ap
)
4668 vattr_t
*vap
= ap
->a_vap
;
4672 #if __FreeBSD_version < 1400068
4673 ASSERT(ap
->a_cnp
->cn_flags
& SAVENAME
);
4676 vattr_init_mask(vap
);
4679 rc
= zfs_mkdir(VTOZ(ap
->a_dvp
), ap
->a_cnp
->cn_nameptr
, vap
, &zp
,
4680 ap
->a_cnp
->cn_cred
, 0, NULL
, NULL
);
4683 *ap
->a_vpp
= ZTOV(zp
);
4687 #ifndef _SYS_SYSPROTO_H_
4688 struct vop_rmdir_args
{
4689 struct vnode
*a_dvp
;
4691 struct componentname
*a_cnp
;
4696 zfs_freebsd_rmdir(struct vop_rmdir_args
*ap
)
4698 struct componentname
*cnp
= ap
->a_cnp
;
4700 #if __FreeBSD_version < 1400068
4701 ASSERT(cnp
->cn_flags
& SAVENAME
);
4704 return (zfs_rmdir_(ap
->a_dvp
, ap
->a_vp
, cnp
->cn_nameptr
, cnp
->cn_cred
));
4707 #ifndef _SYS_SYSPROTO_H_
4708 struct vop_readdir_args
{
4711 struct ucred
*a_cred
;
4714 cookie_t
**a_cookies
;
4719 zfs_freebsd_readdir(struct vop_readdir_args
*ap
)
4722 zfs_uio_init(&uio
, ap
->a_uio
);
4723 return (zfs_readdir(ap
->a_vp
, &uio
, ap
->a_cred
, ap
->a_eofflag
,
4724 ap
->a_ncookies
, ap
->a_cookies
));
4727 #ifndef _SYS_SYSPROTO_H_
4728 struct vop_fsync_args
{
4731 struct thread
*a_td
;
4736 zfs_freebsd_fsync(struct vop_fsync_args
*ap
)
4739 return (zfs_fsync(VTOZ(ap
->a_vp
), 0, ap
->a_td
->td_ucred
));
4742 #ifndef _SYS_SYSPROTO_H_
4743 struct vop_getattr_args
{
4745 struct vattr
*a_vap
;
4746 struct ucred
*a_cred
;
4751 zfs_freebsd_getattr(struct vop_getattr_args
*ap
)
4753 vattr_t
*vap
= ap
->a_vap
;
4759 xvap
.xva_vattr
= *vap
;
4760 xvap
.xva_vattr
.va_mask
|= AT_XVATTR
;
4762 /* Convert chflags into ZFS-type flags. */
4763 /* XXX: what about SF_SETTABLE?. */
4764 XVA_SET_REQ(&xvap
, XAT_IMMUTABLE
);
4765 XVA_SET_REQ(&xvap
, XAT_APPENDONLY
);
4766 XVA_SET_REQ(&xvap
, XAT_NOUNLINK
);
4767 XVA_SET_REQ(&xvap
, XAT_NODUMP
);
4768 XVA_SET_REQ(&xvap
, XAT_READONLY
);
4769 XVA_SET_REQ(&xvap
, XAT_ARCHIVE
);
4770 XVA_SET_REQ(&xvap
, XAT_SYSTEM
);
4771 XVA_SET_REQ(&xvap
, XAT_HIDDEN
);
4772 XVA_SET_REQ(&xvap
, XAT_REPARSE
);
4773 XVA_SET_REQ(&xvap
, XAT_OFFLINE
);
4774 XVA_SET_REQ(&xvap
, XAT_SPARSE
);
4776 error
= zfs_getattr(ap
->a_vp
, (vattr_t
*)&xvap
, 0, ap
->a_cred
);
4780 /* Convert ZFS xattr into chflags. */
4781 #define FLAG_CHECK(fflag, xflag, xfield) do { \
4782 if (XVA_ISSET_RTN(&xvap, (xflag)) && (xfield) != 0) \
4783 fflags |= (fflag); \
4785 FLAG_CHECK(SF_IMMUTABLE
, XAT_IMMUTABLE
,
4786 xvap
.xva_xoptattrs
.xoa_immutable
);
4787 FLAG_CHECK(SF_APPEND
, XAT_APPENDONLY
,
4788 xvap
.xva_xoptattrs
.xoa_appendonly
);
4789 FLAG_CHECK(SF_NOUNLINK
, XAT_NOUNLINK
,
4790 xvap
.xva_xoptattrs
.xoa_nounlink
);
4791 FLAG_CHECK(UF_ARCHIVE
, XAT_ARCHIVE
,
4792 xvap
.xva_xoptattrs
.xoa_archive
);
4793 FLAG_CHECK(UF_NODUMP
, XAT_NODUMP
,
4794 xvap
.xva_xoptattrs
.xoa_nodump
);
4795 FLAG_CHECK(UF_READONLY
, XAT_READONLY
,
4796 xvap
.xva_xoptattrs
.xoa_readonly
);
4797 FLAG_CHECK(UF_SYSTEM
, XAT_SYSTEM
,
4798 xvap
.xva_xoptattrs
.xoa_system
);
4799 FLAG_CHECK(UF_HIDDEN
, XAT_HIDDEN
,
4800 xvap
.xva_xoptattrs
.xoa_hidden
);
4801 FLAG_CHECK(UF_REPARSE
, XAT_REPARSE
,
4802 xvap
.xva_xoptattrs
.xoa_reparse
);
4803 FLAG_CHECK(UF_OFFLINE
, XAT_OFFLINE
,
4804 xvap
.xva_xoptattrs
.xoa_offline
);
4805 FLAG_CHECK(UF_SPARSE
, XAT_SPARSE
,
4806 xvap
.xva_xoptattrs
.xoa_sparse
);
4809 *vap
= xvap
.xva_vattr
;
4810 vap
->va_flags
= fflags
;
4814 #ifndef _SYS_SYSPROTO_H_
4815 struct vop_setattr_args
{
4817 struct vattr
*a_vap
;
4818 struct ucred
*a_cred
;
4823 zfs_freebsd_setattr(struct vop_setattr_args
*ap
)
4825 vnode_t
*vp
= ap
->a_vp
;
4826 vattr_t
*vap
= ap
->a_vap
;
4827 cred_t
*cred
= ap
->a_cred
;
4832 vattr_init_mask(vap
);
4833 vap
->va_mask
&= ~AT_NOSET
;
4836 xvap
.xva_vattr
= *vap
;
4838 zflags
= VTOZ(vp
)->z_pflags
;
4840 if (vap
->va_flags
!= VNOVAL
) {
4841 zfsvfs_t
*zfsvfs
= VTOZ(vp
)->z_zfsvfs
;
4844 if (zfsvfs
->z_use_fuids
== B_FALSE
)
4845 return (EOPNOTSUPP
);
4847 fflags
= vap
->va_flags
;
4850 * We need to figure out whether it makes sense to allow
4851 * UF_REPARSE through, since we don't really have other
4852 * facilities to handle reparse points and zfs_setattr()
4853 * doesn't currently allow setting that attribute anyway.
4855 if ((fflags
& ~(SF_IMMUTABLE
|SF_APPEND
|SF_NOUNLINK
|UF_ARCHIVE
|
4856 UF_NODUMP
|UF_SYSTEM
|UF_HIDDEN
|UF_READONLY
|UF_REPARSE
|
4857 UF_OFFLINE
|UF_SPARSE
)) != 0)
4858 return (EOPNOTSUPP
);
4860 * Unprivileged processes are not permitted to unset system
4861 * flags, or modify flags if any system flags are set.
4862 * Privileged non-jail processes may not modify system flags
4863 * if securelevel > 0 and any existing system flags are set.
4864 * Privileged jail processes behave like privileged non-jail
4865 * processes if the PR_ALLOW_CHFLAGS permission bit is set;
4866 * otherwise, they behave like unprivileged processes.
4868 if (secpolicy_fs_owner(vp
->v_mount
, cred
) == 0 ||
4869 spl_priv_check_cred(cred
, PRIV_VFS_SYSFLAGS
) == 0) {
4871 (ZFS_IMMUTABLE
| ZFS_APPENDONLY
| ZFS_NOUNLINK
)) {
4872 error
= securelevel_gt(cred
, 0);
4878 * Callers may only modify the file flags on
4879 * objects they have VADMIN rights for.
4881 if ((error
= VOP_ACCESS(vp
, VADMIN
, cred
,
4885 (ZFS_IMMUTABLE
| ZFS_APPENDONLY
|
4890 (SF_IMMUTABLE
| SF_APPEND
| SF_NOUNLINK
)) {
4895 #define FLAG_CHANGE(fflag, zflag, xflag, xfield) do { \
4896 if (((fflags & (fflag)) && !(zflags & (zflag))) || \
4897 ((zflags & (zflag)) && !(fflags & (fflag)))) { \
4898 XVA_SET_REQ(&xvap, (xflag)); \
4899 (xfield) = ((fflags & (fflag)) != 0); \
4902 /* Convert chflags into ZFS-type flags. */
4903 /* XXX: what about SF_SETTABLE?. */
4904 FLAG_CHANGE(SF_IMMUTABLE
, ZFS_IMMUTABLE
, XAT_IMMUTABLE
,
4905 xvap
.xva_xoptattrs
.xoa_immutable
);
4906 FLAG_CHANGE(SF_APPEND
, ZFS_APPENDONLY
, XAT_APPENDONLY
,
4907 xvap
.xva_xoptattrs
.xoa_appendonly
);
4908 FLAG_CHANGE(SF_NOUNLINK
, ZFS_NOUNLINK
, XAT_NOUNLINK
,
4909 xvap
.xva_xoptattrs
.xoa_nounlink
);
4910 FLAG_CHANGE(UF_ARCHIVE
, ZFS_ARCHIVE
, XAT_ARCHIVE
,
4911 xvap
.xva_xoptattrs
.xoa_archive
);
4912 FLAG_CHANGE(UF_NODUMP
, ZFS_NODUMP
, XAT_NODUMP
,
4913 xvap
.xva_xoptattrs
.xoa_nodump
);
4914 FLAG_CHANGE(UF_READONLY
, ZFS_READONLY
, XAT_READONLY
,
4915 xvap
.xva_xoptattrs
.xoa_readonly
);
4916 FLAG_CHANGE(UF_SYSTEM
, ZFS_SYSTEM
, XAT_SYSTEM
,
4917 xvap
.xva_xoptattrs
.xoa_system
);
4918 FLAG_CHANGE(UF_HIDDEN
, ZFS_HIDDEN
, XAT_HIDDEN
,
4919 xvap
.xva_xoptattrs
.xoa_hidden
);
4920 FLAG_CHANGE(UF_REPARSE
, ZFS_REPARSE
, XAT_REPARSE
,
4921 xvap
.xva_xoptattrs
.xoa_reparse
);
4922 FLAG_CHANGE(UF_OFFLINE
, ZFS_OFFLINE
, XAT_OFFLINE
,
4923 xvap
.xva_xoptattrs
.xoa_offline
);
4924 FLAG_CHANGE(UF_SPARSE
, ZFS_SPARSE
, XAT_SPARSE
,
4925 xvap
.xva_xoptattrs
.xoa_sparse
);
4928 if (vap
->va_birthtime
.tv_sec
!= VNOVAL
) {
4929 xvap
.xva_vattr
.va_mask
|= AT_XVATTR
;
4930 XVA_SET_REQ(&xvap
, XAT_CREATETIME
);
4932 return (zfs_setattr(VTOZ(vp
), (vattr_t
*)&xvap
, 0, cred
, NULL
));
4935 #ifndef _SYS_SYSPROTO_H_
4936 struct vop_rename_args
{
4937 struct vnode
*a_fdvp
;
4938 struct vnode
*a_fvp
;
4939 struct componentname
*a_fcnp
;
4940 struct vnode
*a_tdvp
;
4941 struct vnode
*a_tvp
;
4942 struct componentname
*a_tcnp
;
4947 zfs_freebsd_rename(struct vop_rename_args
*ap
)
4949 vnode_t
*fdvp
= ap
->a_fdvp
;
4950 vnode_t
*fvp
= ap
->a_fvp
;
4951 vnode_t
*tdvp
= ap
->a_tdvp
;
4952 vnode_t
*tvp
= ap
->a_tvp
;
4955 #if __FreeBSD_version < 1400068
4956 ASSERT(ap
->a_fcnp
->cn_flags
& (SAVENAME
|SAVESTART
));
4957 ASSERT(ap
->a_tcnp
->cn_flags
& (SAVENAME
|SAVESTART
));
4960 error
= zfs_do_rename(fdvp
, &fvp
, ap
->a_fcnp
, tdvp
, &tvp
,
4961 ap
->a_tcnp
, ap
->a_fcnp
->cn_cred
);
4972 #ifndef _SYS_SYSPROTO_H_
4973 struct vop_symlink_args
{
4974 struct vnode
*a_dvp
;
4975 struct vnode
**a_vpp
;
4976 struct componentname
*a_cnp
;
4977 struct vattr
*a_vap
;
4983 zfs_freebsd_symlink(struct vop_symlink_args
*ap
)
4985 struct componentname
*cnp
= ap
->a_cnp
;
4986 vattr_t
*vap
= ap
->a_vap
;
4988 #if __FreeBSD_version >= 1300139
4994 #if __FreeBSD_version < 1400068
4995 ASSERT(cnp
->cn_flags
& SAVENAME
);
4998 vap
->va_type
= VLNK
; /* FreeBSD: Syscall only sets va_mode. */
4999 vattr_init_mask(vap
);
5002 rc
= zfs_symlink(VTOZ(ap
->a_dvp
), cnp
->cn_nameptr
, vap
,
5003 ap
->a_target
, &zp
, cnp
->cn_cred
, 0 /* flags */, NULL
);
5005 *ap
->a_vpp
= ZTOV(zp
);
5006 ASSERT_VOP_ELOCKED(ZTOV(zp
), __func__
);
5007 #if __FreeBSD_version >= 1300139
5008 MPASS(zp
->z_cached_symlink
== NULL
);
5009 symlink_len
= strlen(ap
->a_target
);
5010 symlink
= cache_symlink_alloc(symlink_len
+ 1, M_WAITOK
);
5011 if (symlink
!= NULL
) {
5012 memcpy(symlink
, ap
->a_target
, symlink_len
);
5013 symlink
[symlink_len
] = '\0';
5014 atomic_store_rel_ptr((uintptr_t *)&zp
->z_cached_symlink
,
5015 (uintptr_t)symlink
);
5022 #ifndef _SYS_SYSPROTO_H_
5023 struct vop_readlink_args
{
5026 struct ucred
*a_cred
;
5031 zfs_freebsd_readlink(struct vop_readlink_args
*ap
)
5035 #if __FreeBSD_version >= 1300139
5036 znode_t
*zp
= VTOZ(ap
->a_vp
);
5037 char *symlink
, *base
;
5042 zfs_uio_init(&uio
, ap
->a_uio
);
5043 #if __FreeBSD_version >= 1300139
5045 if (zfs_uio_segflg(&uio
) == UIO_SYSSPACE
&&
5046 zfs_uio_iovcnt(&uio
) == 1) {
5047 base
= zfs_uio_iovbase(&uio
, 0);
5048 symlink_len
= zfs_uio_iovlen(&uio
, 0);
5052 error
= zfs_readlink(ap
->a_vp
, &uio
, ap
->a_cred
, NULL
);
5053 #if __FreeBSD_version >= 1300139
5054 if (atomic_load_ptr(&zp
->z_cached_symlink
) != NULL
||
5055 error
!= 0 || !trycache
) {
5058 symlink_len
-= zfs_uio_resid(&uio
);
5059 symlink
= cache_symlink_alloc(symlink_len
+ 1, M_WAITOK
);
5060 if (symlink
!= NULL
) {
5061 memcpy(symlink
, base
, symlink_len
);
5062 symlink
[symlink_len
] = '\0';
5063 if (!atomic_cmpset_rel_ptr((uintptr_t *)&zp
->z_cached_symlink
,
5064 (uintptr_t)NULL
, (uintptr_t)symlink
)) {
5065 cache_symlink_free(symlink
, symlink_len
+ 1);
5072 #ifndef _SYS_SYSPROTO_H_
5073 struct vop_link_args
{
5074 struct vnode
*a_tdvp
;
5076 struct componentname
*a_cnp
;
5081 zfs_freebsd_link(struct vop_link_args
*ap
)
5083 struct componentname
*cnp
= ap
->a_cnp
;
5084 vnode_t
*vp
= ap
->a_vp
;
5085 vnode_t
*tdvp
= ap
->a_tdvp
;
5087 if (tdvp
->v_mount
!= vp
->v_mount
)
5090 #if __FreeBSD_version < 1400068
5091 ASSERT(cnp
->cn_flags
& SAVENAME
);
5094 return (zfs_link(VTOZ(tdvp
), VTOZ(vp
),
5095 cnp
->cn_nameptr
, cnp
->cn_cred
, 0));
5098 #ifndef _SYS_SYSPROTO_H_
5099 struct vop_inactive_args
{
5101 struct thread
*a_td
;
5106 zfs_freebsd_inactive(struct vop_inactive_args
*ap
)
5108 vnode_t
*vp
= ap
->a_vp
;
5110 #if __FreeBSD_version >= 1300123
5111 zfs_inactive(vp
, curthread
->td_ucred
, NULL
);
5113 zfs_inactive(vp
, ap
->a_td
->td_ucred
, NULL
);
5118 #if __FreeBSD_version >= 1300042
5119 #ifndef _SYS_SYSPROTO_H_
5120 struct vop_need_inactive_args
{
5122 struct thread
*a_td
;
5127 zfs_freebsd_need_inactive(struct vop_need_inactive_args
*ap
)
5129 vnode_t
*vp
= ap
->a_vp
;
5130 znode_t
*zp
= VTOZ(vp
);
5131 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
5134 if (vn_need_pageq_flush(vp
))
5137 if (!ZFS_TEARDOWN_INACTIVE_TRY_ENTER_READ(zfsvfs
))
5139 need
= (zp
->z_sa_hdl
== NULL
|| zp
->z_unlinked
|| zp
->z_atime_dirty
);
5140 ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs
);
5146 #ifndef _SYS_SYSPROTO_H_
5147 struct vop_reclaim_args
{
5149 struct thread
*a_td
;
5154 zfs_freebsd_reclaim(struct vop_reclaim_args
*ap
)
5156 vnode_t
*vp
= ap
->a_vp
;
5157 znode_t
*zp
= VTOZ(vp
);
5158 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
5160 ASSERT3P(zp
, !=, NULL
);
5162 #if __FreeBSD_version < 1300042
5163 /* Destroy the vm object and flush associated pages. */
5164 vnode_destroy_vobject(vp
);
5167 * z_teardown_inactive_lock protects from a race with
5168 * zfs_znode_dmu_fini in zfsvfs_teardown during
5171 ZFS_TEARDOWN_INACTIVE_ENTER_READ(zfsvfs
);
5172 if (zp
->z_sa_hdl
== NULL
)
5176 ZFS_TEARDOWN_INACTIVE_EXIT_READ(zfsvfs
);
5182 #ifndef _SYS_SYSPROTO_H_
5183 struct vop_fid_args
{
5190 zfs_freebsd_fid(struct vop_fid_args
*ap
)
5193 return (zfs_fid(ap
->a_vp
, (void *)ap
->a_fid
, NULL
));
5197 #ifndef _SYS_SYSPROTO_H_
5198 struct vop_pathconf_args
{
5201 register_t
*a_retval
;
5206 zfs_freebsd_pathconf(struct vop_pathconf_args
*ap
)
5211 error
= zfs_pathconf(ap
->a_vp
, ap
->a_name
, &val
,
5212 curthread
->td_ucred
, NULL
);
5214 *ap
->a_retval
= val
;
5217 if (error
!= EOPNOTSUPP
)
5220 switch (ap
->a_name
) {
5222 *ap
->a_retval
= NAME_MAX
;
5224 #if __FreeBSD_version >= 1400032
5225 case _PC_DEALLOC_PRESENT
:
5230 if (ap
->a_vp
->v_type
== VDIR
|| ap
->a_vp
->v_type
== VFIFO
) {
5231 *ap
->a_retval
= PIPE_BUF
;
5236 return (vop_stdpathconf(ap
));
5240 static int zfs_xattr_compat
= 1;
5243 zfs_check_attrname(const char *name
)
5245 /* We don't allow '/' character in attribute name. */
5246 if (strchr(name
, '/') != NULL
)
5247 return (SET_ERROR(EINVAL
));
5248 /* We don't allow attribute names that start with a namespace prefix. */
5249 if (ZFS_XA_NS_PREFIX_FORBIDDEN(name
))
5250 return (SET_ERROR(EINVAL
));
5255 * FreeBSD's extended attributes namespace defines file name prefix for ZFS'
5256 * extended attribute name:
5258 * NAMESPACE XATTR_COMPAT PREFIX
5259 * system * freebsd:system:
5260 * user 1 (none, can be used to access ZFS
5261 * fsattr(5) attributes created on Solaris)
5265 zfs_create_attrname(int attrnamespace
, const char *name
, char *attrname
,
5266 size_t size
, boolean_t compat
)
5268 const char *namespace, *prefix
, *suffix
;
5270 memset(attrname
, 0, size
);
5272 switch (attrnamespace
) {
5273 case EXTATTR_NAMESPACE_USER
:
5276 * This is the default namespace by which we can access
5277 * all attributes created on Solaris.
5279 prefix
= namespace = suffix
= "";
5282 * This is compatible with the user namespace encoding
5283 * on Linux prior to xattr_compat, but nothing
5291 case EXTATTR_NAMESPACE_SYSTEM
:
5292 prefix
= "freebsd:";
5293 namespace = EXTATTR_NAMESPACE_SYSTEM_STRING
;
5296 case EXTATTR_NAMESPACE_EMPTY
:
5298 return (SET_ERROR(EINVAL
));
5300 if (snprintf(attrname
, size
, "%s%s%s%s", prefix
, namespace, suffix
,
5302 return (SET_ERROR(ENAMETOOLONG
));
5308 zfs_ensure_xattr_cached(znode_t
*zp
)
5312 ASSERT(RW_LOCK_HELD(&zp
->z_xattr_lock
));
5314 if (zp
->z_xattr_cached
!= NULL
)
5317 if (rw_write_held(&zp
->z_xattr_lock
))
5318 return (zfs_sa_get_xattr(zp
));
5320 if (!rw_tryupgrade(&zp
->z_xattr_lock
)) {
5321 rw_exit(&zp
->z_xattr_lock
);
5322 rw_enter(&zp
->z_xattr_lock
, RW_WRITER
);
5324 if (zp
->z_xattr_cached
== NULL
)
5325 error
= zfs_sa_get_xattr(zp
);
5326 rw_downgrade(&zp
->z_xattr_lock
);
5330 #ifndef _SYS_SYSPROTO_H_
5331 struct vop_getextattr
{
5332 IN
struct vnode
*a_vp
;
5333 IN
int a_attrnamespace
;
5334 IN
const char *a_name
;
5335 INOUT
struct uio
*a_uio
;
5337 IN
struct ucred
*a_cred
;
5338 IN
struct thread
*a_td
;
5343 zfs_getextattr_dir(struct vop_getextattr_args
*ap
, const char *attrname
)
5345 struct thread
*td
= ap
->a_td
;
5346 struct nameidata nd
;
5348 vnode_t
*xvp
= NULL
, *vp
;
5351 error
= zfs_lookup(ap
->a_vp
, NULL
, &xvp
, NULL
, 0, ap
->a_cred
,
5352 LOOKUP_XATTR
, B_FALSE
);
5357 #if __FreeBSD_version < 1400043
5358 NDINIT_ATVP(&nd
, LOOKUP
, NOFOLLOW
, UIO_SYSSPACE
, attrname
,
5361 NDINIT_ATVP(&nd
, LOOKUP
, NOFOLLOW
, UIO_SYSSPACE
, attrname
, xvp
);
5363 error
= vn_open_cred(&nd
, &flags
, 0, VN_OPEN_INVFS
, ap
->a_cred
, NULL
);
5365 return (SET_ERROR(error
));
5369 if (ap
->a_size
!= NULL
) {
5370 error
= VOP_GETATTR(vp
, &va
, ap
->a_cred
);
5372 *ap
->a_size
= (size_t)va
.va_size
;
5373 } else if (ap
->a_uio
!= NULL
)
5374 error
= VOP_READ(vp
, ap
->a_uio
, IO_UNIT
, ap
->a_cred
);
5377 vn_close(vp
, flags
, ap
->a_cred
, td
);
5382 zfs_getextattr_sa(struct vop_getextattr_args
*ap
, const char *attrname
)
5384 znode_t
*zp
= VTOZ(ap
->a_vp
);
5389 error
= zfs_ensure_xattr_cached(zp
);
5393 ASSERT(RW_LOCK_HELD(&zp
->z_xattr_lock
));
5394 ASSERT3P(zp
->z_xattr_cached
, !=, NULL
);
5396 error
= nvlist_lookup_byte_array(zp
->z_xattr_cached
, attrname
,
5397 &nv_value
, &nv_size
);
5399 return (SET_ERROR(error
));
5401 if (ap
->a_size
!= NULL
)
5402 *ap
->a_size
= nv_size
;
5403 else if (ap
->a_uio
!= NULL
)
5404 error
= uiomove(nv_value
, nv_size
, ap
->a_uio
);
5406 return (SET_ERROR(error
));
5412 zfs_getextattr_impl(struct vop_getextattr_args
*ap
, boolean_t compat
)
5414 znode_t
*zp
= VTOZ(ap
->a_vp
);
5415 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
5416 char attrname
[EXTATTR_MAXNAMELEN
+1];
5419 error
= zfs_create_attrname(ap
->a_attrnamespace
, ap
->a_name
, attrname
,
5420 sizeof (attrname
), compat
);
5425 if (zfsvfs
->z_use_sa
&& zp
->z_is_sa
)
5426 error
= zfs_getextattr_sa(ap
, attrname
);
5427 if (error
== ENOENT
)
5428 error
= zfs_getextattr_dir(ap
, attrname
);
5433 * Vnode operation to retrieve a named extended attribute.
5436 zfs_getextattr(struct vop_getextattr_args
*ap
)
5438 znode_t
*zp
= VTOZ(ap
->a_vp
);
5439 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
5443 * If the xattr property is off, refuse the request.
5445 if (!(zfsvfs
->z_flags
& ZSB_XATTR
))
5446 return (SET_ERROR(EOPNOTSUPP
));
5448 error
= extattr_check_cred(ap
->a_vp
, ap
->a_attrnamespace
,
5449 ap
->a_cred
, ap
->a_td
, VREAD
);
5451 return (SET_ERROR(error
));
5453 error
= zfs_check_attrname(ap
->a_name
);
5457 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
5460 rw_enter(&zp
->z_xattr_lock
, RW_READER
);
5462 error
= zfs_getextattr_impl(ap
, zfs_xattr_compat
);
5463 if ((error
== ENOENT
|| error
== ENOATTR
) &&
5464 ap
->a_attrnamespace
== EXTATTR_NAMESPACE_USER
) {
5466 * Fall back to the alternate namespace format if we failed to
5467 * find a user xattr.
5469 error
= zfs_getextattr_impl(ap
, !zfs_xattr_compat
);
5472 rw_exit(&zp
->z_xattr_lock
);
5473 zfs_exit(zfsvfs
, FTAG
);
5474 if (error
== ENOENT
)
5475 error
= SET_ERROR(ENOATTR
);
5479 #ifndef _SYS_SYSPROTO_H_
5480 struct vop_deleteextattr
{
5481 IN
struct vnode
*a_vp
;
5482 IN
int a_attrnamespace
;
5483 IN
const char *a_name
;
5484 IN
struct ucred
*a_cred
;
5485 IN
struct thread
*a_td
;
5490 zfs_deleteextattr_dir(struct vop_deleteextattr_args
*ap
, const char *attrname
)
5492 struct nameidata nd
;
5493 vnode_t
*xvp
= NULL
, *vp
;
5496 error
= zfs_lookup(ap
->a_vp
, NULL
, &xvp
, NULL
, 0, ap
->a_cred
,
5497 LOOKUP_XATTR
, B_FALSE
);
5501 #if __FreeBSD_version < 1400043
5502 NDINIT_ATVP(&nd
, DELETE
, NOFOLLOW
| LOCKPARENT
| LOCKLEAF
,
5503 UIO_SYSSPACE
, attrname
, xvp
, ap
->a_td
);
5505 NDINIT_ATVP(&nd
, DELETE
, NOFOLLOW
| LOCKPARENT
| LOCKLEAF
,
5506 UIO_SYSSPACE
, attrname
, xvp
);
5510 return (SET_ERROR(error
));
5513 error
= VOP_REMOVE(nd
.ni_dvp
, vp
, &nd
.ni_cnd
);
5517 if (vp
== nd
.ni_dvp
)
5526 zfs_deleteextattr_sa(struct vop_deleteextattr_args
*ap
, const char *attrname
)
5528 znode_t
*zp
= VTOZ(ap
->a_vp
);
5532 error
= zfs_ensure_xattr_cached(zp
);
5536 ASSERT(RW_WRITE_HELD(&zp
->z_xattr_lock
));
5537 ASSERT3P(zp
->z_xattr_cached
, !=, NULL
);
5539 nvl
= zp
->z_xattr_cached
;
5540 error
= nvlist_remove(nvl
, attrname
, DATA_TYPE_BYTE_ARRAY
);
5542 error
= SET_ERROR(error
);
5544 error
= zfs_sa_set_xattr(zp
, attrname
, NULL
, 0);
5546 zp
->z_xattr_cached
= NULL
;
5553 zfs_deleteextattr_impl(struct vop_deleteextattr_args
*ap
, boolean_t compat
)
5555 znode_t
*zp
= VTOZ(ap
->a_vp
);
5556 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
5557 char attrname
[EXTATTR_MAXNAMELEN
+1];
5560 error
= zfs_create_attrname(ap
->a_attrnamespace
, ap
->a_name
, attrname
,
5561 sizeof (attrname
), compat
);
5566 if (zfsvfs
->z_use_sa
&& zp
->z_is_sa
)
5567 error
= zfs_deleteextattr_sa(ap
, attrname
);
5568 if (error
== ENOENT
)
5569 error
= zfs_deleteextattr_dir(ap
, attrname
);
5574 * Vnode operation to remove a named attribute.
5577 zfs_deleteextattr(struct vop_deleteextattr_args
*ap
)
5579 znode_t
*zp
= VTOZ(ap
->a_vp
);
5580 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
5584 * If the xattr property is off, refuse the request.
5586 if (!(zfsvfs
->z_flags
& ZSB_XATTR
))
5587 return (SET_ERROR(EOPNOTSUPP
));
5589 error
= extattr_check_cred(ap
->a_vp
, ap
->a_attrnamespace
,
5590 ap
->a_cred
, ap
->a_td
, VWRITE
);
5592 return (SET_ERROR(error
));
5594 error
= zfs_check_attrname(ap
->a_name
);
5598 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
5600 rw_enter(&zp
->z_xattr_lock
, RW_WRITER
);
5602 error
= zfs_deleteextattr_impl(ap
, zfs_xattr_compat
);
5603 if ((error
== ENOENT
|| error
== ENOATTR
) &&
5604 ap
->a_attrnamespace
== EXTATTR_NAMESPACE_USER
) {
5606 * Fall back to the alternate namespace format if we failed to
5607 * find a user xattr.
5609 error
= zfs_deleteextattr_impl(ap
, !zfs_xattr_compat
);
5612 rw_exit(&zp
->z_xattr_lock
);
5613 zfs_exit(zfsvfs
, FTAG
);
5614 if (error
== ENOENT
)
5615 error
= SET_ERROR(ENOATTR
);
5619 #ifndef _SYS_SYSPROTO_H_
5620 struct vop_setextattr
{
5621 IN
struct vnode
*a_vp
;
5622 IN
int a_attrnamespace
;
5623 IN
const char *a_name
;
5624 INOUT
struct uio
*a_uio
;
5625 IN
struct ucred
*a_cred
;
5626 IN
struct thread
*a_td
;
5631 zfs_setextattr_dir(struct vop_setextattr_args
*ap
, const char *attrname
)
5633 struct thread
*td
= ap
->a_td
;
5634 struct nameidata nd
;
5636 vnode_t
*xvp
= NULL
, *vp
;
5639 error
= zfs_lookup(ap
->a_vp
, NULL
, &xvp
, NULL
, 0, ap
->a_cred
,
5640 LOOKUP_XATTR
| CREATE_XATTR_DIR
, B_FALSE
);
5644 flags
= FFLAGS(O_WRONLY
| O_CREAT
);
5645 #if __FreeBSD_version < 1400043
5646 NDINIT_ATVP(&nd
, LOOKUP
, NOFOLLOW
, UIO_SYSSPACE
, attrname
, xvp
, td
);
5648 NDINIT_ATVP(&nd
, LOOKUP
, NOFOLLOW
, UIO_SYSSPACE
, attrname
, xvp
);
5650 error
= vn_open_cred(&nd
, &flags
, 0600, VN_OPEN_INVFS
, ap
->a_cred
,
5653 return (SET_ERROR(error
));
5659 error
= VOP_SETATTR(vp
, &va
, ap
->a_cred
);
5661 VOP_WRITE(vp
, ap
->a_uio
, IO_UNIT
, ap
->a_cred
);
5664 vn_close(vp
, flags
, ap
->a_cred
, td
);
5669 zfs_setextattr_sa(struct vop_setextattr_args
*ap
, const char *attrname
)
5671 znode_t
*zp
= VTOZ(ap
->a_vp
);
5676 error
= zfs_ensure_xattr_cached(zp
);
5680 ASSERT(RW_WRITE_HELD(&zp
->z_xattr_lock
));
5681 ASSERT3P(zp
->z_xattr_cached
, !=, NULL
);
5683 nvl
= zp
->z_xattr_cached
;
5684 size_t entry_size
= ap
->a_uio
->uio_resid
;
5685 if (entry_size
> DXATTR_MAX_ENTRY_SIZE
)
5686 return (SET_ERROR(EFBIG
));
5687 error
= nvlist_size(nvl
, &sa_size
, NV_ENCODE_XDR
);
5689 return (SET_ERROR(error
));
5690 if (sa_size
> DXATTR_MAX_SA_SIZE
)
5691 return (SET_ERROR(EFBIG
));
5692 uchar_t
*buf
= kmem_alloc(entry_size
, KM_SLEEP
);
5693 error
= uiomove(buf
, entry_size
, ap
->a_uio
);
5695 error
= SET_ERROR(error
);
5697 error
= nvlist_add_byte_array(nvl
, attrname
, buf
, entry_size
);
5699 error
= SET_ERROR(error
);
5702 error
= zfs_sa_set_xattr(zp
, attrname
, buf
, entry_size
);
5703 kmem_free(buf
, entry_size
);
5705 zp
->z_xattr_cached
= NULL
;
5712 zfs_setextattr_impl(struct vop_setextattr_args
*ap
, boolean_t compat
)
5714 znode_t
*zp
= VTOZ(ap
->a_vp
);
5715 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
5716 char attrname
[EXTATTR_MAXNAMELEN
+1];
5719 error
= zfs_create_attrname(ap
->a_attrnamespace
, ap
->a_name
, attrname
,
5720 sizeof (attrname
), compat
);
5724 struct vop_deleteextattr_args vda
= {
5726 .a_attrnamespace
= ap
->a_attrnamespace
,
5727 .a_name
= ap
->a_name
,
5728 .a_cred
= ap
->a_cred
,
5732 if (zfsvfs
->z_use_sa
&& zp
->z_is_sa
&& zfsvfs
->z_xattr_sa
) {
5733 error
= zfs_setextattr_sa(ap
, attrname
);
5736 * Successfully put into SA, we need to clear the one
5737 * in dir if present.
5739 zfs_deleteextattr_dir(&vda
, attrname
);
5743 error
= zfs_setextattr_dir(ap
, attrname
);
5744 if (error
== 0 && zp
->z_is_sa
) {
5746 * Successfully put into dir, we need to clear the one
5749 zfs_deleteextattr_sa(&vda
, attrname
);
5752 if (error
== 0 && ap
->a_attrnamespace
== EXTATTR_NAMESPACE_USER
) {
5754 * Also clear all versions of the alternate compat name.
5756 zfs_deleteextattr_impl(&vda
, !compat
);
5762 * Vnode operation to set a named attribute.
5765 zfs_setextattr(struct vop_setextattr_args
*ap
)
5767 znode_t
*zp
= VTOZ(ap
->a_vp
);
5768 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
5772 * If the xattr property is off, refuse the request.
5774 if (!(zfsvfs
->z_flags
& ZSB_XATTR
))
5775 return (SET_ERROR(EOPNOTSUPP
));
5777 error
= extattr_check_cred(ap
->a_vp
, ap
->a_attrnamespace
,
5778 ap
->a_cred
, ap
->a_td
, VWRITE
);
5780 return (SET_ERROR(error
));
5782 error
= zfs_check_attrname(ap
->a_name
);
5786 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
5788 rw_enter(&zp
->z_xattr_lock
, RW_WRITER
);
5790 error
= zfs_setextattr_impl(ap
, zfs_xattr_compat
);
5792 rw_exit(&zp
->z_xattr_lock
);
5793 zfs_exit(zfsvfs
, FTAG
);
5797 #ifndef _SYS_SYSPROTO_H_
5798 struct vop_listextattr
{
5799 IN
struct vnode
*a_vp
;
5800 IN
int a_attrnamespace
;
5801 INOUT
struct uio
*a_uio
;
5803 IN
struct ucred
*a_cred
;
5804 IN
struct thread
*a_td
;
5809 zfs_listextattr_dir(struct vop_listextattr_args
*ap
, const char *attrprefix
)
5811 struct thread
*td
= ap
->a_td
;
5812 struct nameidata nd
;
5813 uint8_t dirbuf
[sizeof (struct dirent
)];
5816 vnode_t
*xvp
= NULL
, *vp
;
5819 error
= zfs_lookup(ap
->a_vp
, NULL
, &xvp
, NULL
, 0, ap
->a_cred
,
5820 LOOKUP_XATTR
, B_FALSE
);
5823 * ENOATTR means that the EA directory does not yet exist,
5824 * i.e. there are no extended attributes there.
5826 if (error
== ENOATTR
)
5831 #if __FreeBSD_version < 1400043
5832 NDINIT_ATVP(&nd
, LOOKUP
, NOFOLLOW
| LOCKLEAF
| LOCKSHARED
,
5833 UIO_SYSSPACE
, ".", xvp
, td
);
5835 NDINIT_ATVP(&nd
, LOOKUP
, NOFOLLOW
| LOCKLEAF
| LOCKSHARED
,
5836 UIO_SYSSPACE
, ".", xvp
);
5840 return (SET_ERROR(error
));
5844 auio
.uio_iov
= &aiov
;
5845 auio
.uio_iovcnt
= 1;
5846 auio
.uio_segflg
= UIO_SYSSPACE
;
5848 auio
.uio_rw
= UIO_READ
;
5849 auio
.uio_offset
= 0;
5851 size_t plen
= strlen(attrprefix
);
5854 aiov
.iov_base
= (void *)dirbuf
;
5855 aiov
.iov_len
= sizeof (dirbuf
);
5856 auio
.uio_resid
= sizeof (dirbuf
);
5857 error
= VOP_READDIR(vp
, &auio
, ap
->a_cred
, &eof
, NULL
, NULL
);
5860 int done
= sizeof (dirbuf
) - auio
.uio_resid
;
5861 for (int pos
= 0; pos
< done
; ) {
5862 struct dirent
*dp
= (struct dirent
*)(dirbuf
+ pos
);
5863 pos
+= dp
->d_reclen
;
5865 * XXX: Temporarily we also accept DT_UNKNOWN, as this
5866 * is what we get when attribute was created on Solaris.
5868 if (dp
->d_type
!= DT_REG
&& dp
->d_type
!= DT_UNKNOWN
)
5870 else if (plen
== 0 &&
5871 ZFS_XA_NS_PREFIX_FORBIDDEN(dp
->d_name
))
5873 else if (strncmp(dp
->d_name
, attrprefix
, plen
) != 0)
5875 uint8_t nlen
= dp
->d_namlen
- plen
;
5876 if (ap
->a_size
!= NULL
) {
5877 *ap
->a_size
+= 1 + nlen
;
5878 } else if (ap
->a_uio
!= NULL
) {
5880 * Format of extattr name entry is one byte for
5881 * length and the rest for name.
5883 error
= uiomove(&nlen
, 1, ap
->a_uio
);
5885 char *namep
= dp
->d_name
+ plen
;
5886 error
= uiomove(namep
, nlen
, ap
->a_uio
);
5889 error
= SET_ERROR(error
);
5894 } while (!eof
&& error
== 0);
5901 zfs_listextattr_sa(struct vop_listextattr_args
*ap
, const char *attrprefix
)
5903 znode_t
*zp
= VTOZ(ap
->a_vp
);
5906 error
= zfs_ensure_xattr_cached(zp
);
5910 ASSERT(RW_LOCK_HELD(&zp
->z_xattr_lock
));
5911 ASSERT3P(zp
->z_xattr_cached
, !=, NULL
);
5913 size_t plen
= strlen(attrprefix
);
5914 nvpair_t
*nvp
= NULL
;
5915 while ((nvp
= nvlist_next_nvpair(zp
->z_xattr_cached
, nvp
)) != NULL
) {
5916 ASSERT3U(nvpair_type(nvp
), ==, DATA_TYPE_BYTE_ARRAY
);
5918 const char *name
= nvpair_name(nvp
);
5919 if (plen
== 0 && ZFS_XA_NS_PREFIX_FORBIDDEN(name
))
5921 else if (strncmp(name
, attrprefix
, plen
) != 0)
5923 uint8_t nlen
= strlen(name
) - plen
;
5924 if (ap
->a_size
!= NULL
) {
5925 *ap
->a_size
+= 1 + nlen
;
5926 } else if (ap
->a_uio
!= NULL
) {
5928 * Format of extattr name entry is one byte for
5929 * length and the rest for name.
5931 error
= uiomove(&nlen
, 1, ap
->a_uio
);
5933 char *namep
= __DECONST(char *, name
) + plen
;
5934 error
= uiomove(namep
, nlen
, ap
->a_uio
);
5937 error
= SET_ERROR(error
);
5947 zfs_listextattr_impl(struct vop_listextattr_args
*ap
, boolean_t compat
)
5949 znode_t
*zp
= VTOZ(ap
->a_vp
);
5950 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
5951 char attrprefix
[16];
5954 error
= zfs_create_attrname(ap
->a_attrnamespace
, "", attrprefix
,
5955 sizeof (attrprefix
), compat
);
5959 if (zfsvfs
->z_use_sa
&& zp
->z_is_sa
)
5960 error
= zfs_listextattr_sa(ap
, attrprefix
);
5962 error
= zfs_listextattr_dir(ap
, attrprefix
);
5967 * Vnode operation to retrieve extended attributes on a vnode.
5970 zfs_listextattr(struct vop_listextattr_args
*ap
)
5972 znode_t
*zp
= VTOZ(ap
->a_vp
);
5973 zfsvfs_t
*zfsvfs
= ZTOZSB(zp
);
5976 if (ap
->a_size
!= NULL
)
5980 * If the xattr property is off, refuse the request.
5982 if (!(zfsvfs
->z_flags
& ZSB_XATTR
))
5983 return (SET_ERROR(EOPNOTSUPP
));
5985 error
= extattr_check_cred(ap
->a_vp
, ap
->a_attrnamespace
,
5986 ap
->a_cred
, ap
->a_td
, VREAD
);
5988 return (SET_ERROR(error
));
5990 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
5992 rw_enter(&zp
->z_xattr_lock
, RW_READER
);
5994 error
= zfs_listextattr_impl(ap
, zfs_xattr_compat
);
5995 if (error
== 0 && ap
->a_attrnamespace
== EXTATTR_NAMESPACE_USER
) {
5996 /* Also list user xattrs with the alternate format. */
5997 error
= zfs_listextattr_impl(ap
, !zfs_xattr_compat
);
6000 rw_exit(&zp
->z_xattr_lock
);
6001 zfs_exit(zfsvfs
, FTAG
);
6005 #ifndef _SYS_SYSPROTO_H_
6006 struct vop_getacl_args
{
6016 zfs_freebsd_getacl(struct vop_getacl_args
*ap
)
6019 vsecattr_t vsecattr
;
6021 if (ap
->a_type
!= ACL_TYPE_NFS4
)
6024 vsecattr
.vsa_mask
= VSA_ACE
| VSA_ACECNT
;
6025 if ((error
= zfs_getsecattr(VTOZ(ap
->a_vp
),
6026 &vsecattr
, 0, ap
->a_cred
)))
6029 error
= acl_from_aces(ap
->a_aclp
, vsecattr
.vsa_aclentp
,
6030 vsecattr
.vsa_aclcnt
);
6031 if (vsecattr
.vsa_aclentp
!= NULL
)
6032 kmem_free(vsecattr
.vsa_aclentp
, vsecattr
.vsa_aclentsz
);
6037 #ifndef _SYS_SYSPROTO_H_
6038 struct vop_setacl_args
{
6048 zfs_freebsd_setacl(struct vop_setacl_args
*ap
)
6051 vsecattr_t vsecattr
;
6052 int aclbsize
; /* size of acl list in bytes */
6055 if (ap
->a_type
!= ACL_TYPE_NFS4
)
6058 if (ap
->a_aclp
== NULL
)
6061 if (ap
->a_aclp
->acl_cnt
< 1 || ap
->a_aclp
->acl_cnt
> MAX_ACL_ENTRIES
)
6065 * With NFSv4 ACLs, chmod(2) may need to add additional entries,
6066 * splitting every entry into two and appending "canonical six"
6067 * entries at the end. Don't allow for setting an ACL that would
6068 * cause chmod(2) to run out of ACL entries.
6070 if (ap
->a_aclp
->acl_cnt
* 2 + 6 > ACL_MAX_ENTRIES
)
6073 error
= acl_nfs4_check(ap
->a_aclp
, ap
->a_vp
->v_type
== VDIR
);
6077 vsecattr
.vsa_mask
= VSA_ACE
;
6078 aclbsize
= ap
->a_aclp
->acl_cnt
* sizeof (ace_t
);
6079 vsecattr
.vsa_aclentp
= kmem_alloc(aclbsize
, KM_SLEEP
);
6080 aaclp
= vsecattr
.vsa_aclentp
;
6081 vsecattr
.vsa_aclentsz
= aclbsize
;
6083 aces_from_acl(vsecattr
.vsa_aclentp
, &vsecattr
.vsa_aclcnt
, ap
->a_aclp
);
6084 error
= zfs_setsecattr(VTOZ(ap
->a_vp
), &vsecattr
, 0, ap
->a_cred
);
6085 kmem_free(aaclp
, aclbsize
);
6090 #ifndef _SYS_SYSPROTO_H_
6091 struct vop_aclcheck_args
{
6101 zfs_freebsd_aclcheck(struct vop_aclcheck_args
*ap
)
6104 return (EOPNOTSUPP
);
6108 zfs_vptocnp(struct vop_vptocnp_args
*ap
)
6110 vnode_t
*covered_vp
;
6111 vnode_t
*vp
= ap
->a_vp
;
6112 zfsvfs_t
*zfsvfs
= vp
->v_vfsp
->vfs_data
;
6113 znode_t
*zp
= VTOZ(vp
);
6117 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
6121 * If we are a snapshot mounted under .zfs, run the operation
6122 * on the covered vnode.
6124 if (zp
->z_id
!= zfsvfs
->z_root
|| zfsvfs
->z_parent
== zfsvfs
) {
6125 char name
[MAXNAMLEN
+ 1];
6129 error
= zfs_znode_parent_and_name(zp
, &dzp
, name
);
6132 if (*ap
->a_buflen
< len
)
6133 error
= SET_ERROR(ENOMEM
);
6136 *ap
->a_buflen
-= len
;
6137 memcpy(ap
->a_buf
+ *ap
->a_buflen
, name
, len
);
6138 *ap
->a_vpp
= ZTOV(dzp
);
6140 zfs_exit(zfsvfs
, FTAG
);
6143 zfs_exit(zfsvfs
, FTAG
);
6145 covered_vp
= vp
->v_mount
->mnt_vnodecovered
;
6146 #if __FreeBSD_version >= 1300045
6147 enum vgetstate vs
= vget_prep(covered_vp
);
6151 ltype
= VOP_ISLOCKED(vp
);
6153 #if __FreeBSD_version >= 1300045
6154 error
= vget_finish(covered_vp
, LK_SHARED
, vs
);
6156 error
= vget(covered_vp
, LK_SHARED
| LK_VNHELD
, curthread
);
6159 #if __FreeBSD_version >= 1300123
6160 error
= VOP_VPTOCNP(covered_vp
, ap
->a_vpp
, ap
->a_buf
,
6163 error
= VOP_VPTOCNP(covered_vp
, ap
->a_vpp
, ap
->a_cred
,
6164 ap
->a_buf
, ap
->a_buflen
);
6168 vn_lock(vp
, ltype
| LK_RETRY
);
6169 if (VN_IS_DOOMED(vp
))
6170 error
= SET_ERROR(ENOENT
);
6174 #if __FreeBSD_version >= 1400032
6176 zfs_deallocate(struct vop_deallocate_args
*ap
)
6178 znode_t
*zp
= VTOZ(ap
->a_vp
);
6179 zfsvfs_t
*zfsvfs
= zp
->z_zfsvfs
;
6181 off_t off
, len
, file_sz
;
6184 if ((error
= zfs_enter_verify_zp(zfsvfs
, zp
, FTAG
)) != 0)
6188 * Callers might not be able to detect properly that we are read-only,
6189 * so check it explicitly here.
6191 if (zfs_is_readonly(zfsvfs
)) {
6192 zfs_exit(zfsvfs
, FTAG
);
6193 return (SET_ERROR(EROFS
));
6196 zilog
= zfsvfs
->z_log
;
6197 off
= *ap
->a_offset
;
6199 file_sz
= zp
->z_size
;
6200 if (off
+ len
> file_sz
)
6201 len
= file_sz
- off
;
6202 /* Fast path for out-of-range request. */
6205 zfs_exit(zfsvfs
, FTAG
);
6209 error
= zfs_freesp(zp
, off
, len
, O_RDWR
, TRUE
);
6211 if (zfsvfs
->z_os
->os_sync
== ZFS_SYNC_ALWAYS
||
6212 (ap
->a_ioflag
& IO_SYNC
) != 0)
6213 zil_commit(zilog
, zp
->z_id
);
6214 *ap
->a_offset
= off
+ len
;
6218 zfs_exit(zfsvfs
, FTAG
);
6223 #if __FreeBSD_version >= 1300039
6224 #ifndef _SYS_SYSPROTO_H_
6225 struct vop_copy_file_range_args
{
6226 struct vnode
*a_invp
;
6228 struct vnode
*a_outvp
;
6231 unsigned int a_flags
;
6232 struct ucred
*a_incred
;
6233 struct ucred
*a_outcred
;
6234 struct thread
*a_fsizetd
;
6238 * TODO: FreeBSD will only call file system-specific copy_file_range() if both
6239 * files resides under the same mountpoint. In case of ZFS we want to be called
6240 * even is files are in different datasets (but on the same pools, but we need
6241 * to check that ourselves).
6244 zfs_freebsd_copy_file_range(struct vop_copy_file_range_args
*ap
)
6246 zfsvfs_t
*outzfsvfs
;
6247 struct vnode
*invp
= ap
->a_invp
;
6248 struct vnode
*outvp
= ap
->a_outvp
;
6252 uint64_t len
= *ap
->a_lenp
;
6254 if (!zfs_bclone_enabled
) {
6256 goto bad_write_fallback
;
6260 * TODO: If offset/length is not aligned to recordsize, use
6261 * vn_generic_copy_file_range() on this fragment.
6262 * It would be better to do this after we lock the vnodes, but then we
6263 * need something else than vn_generic_copy_file_range().
6266 vn_start_write(outvp
, &mp
, V_WAIT
);
6267 if (__predict_true(mp
== outvp
->v_mount
)) {
6268 outzfsvfs
= (zfsvfs_t
*)mp
->mnt_data
;
6269 if (!spa_feature_is_enabled(dmu_objset_spa(outzfsvfs
->z_os
),
6270 SPA_FEATURE_BLOCK_CLONING
)) {
6271 goto bad_write_fallback
;
6274 if (invp
== outvp
) {
6275 if (vn_lock(outvp
, LK_EXCLUSIVE
) != 0) {
6276 goto bad_write_fallback
;
6279 #if (__FreeBSD_version >= 1302506 && __FreeBSD_version < 1400000) || \
6280 __FreeBSD_version >= 1400086
6281 vn_lock_pair(invp
, false, LK_EXCLUSIVE
, outvp
, false,
6284 vn_lock_pair(invp
, false, outvp
, false);
6286 if (VN_IS_DOOMED(invp
) || VN_IS_DOOMED(outvp
)) {
6287 goto bad_locked_fallback
;
6292 error
= mac_vnode_check_write(curthread
->td_ucred
, ap
->a_outcred
,
6298 io
.uio_offset
= *ap
->a_outoffp
;
6299 io
.uio_resid
= *ap
->a_lenp
;
6300 error
= vn_rlimit_fsize(outvp
, &io
, ap
->a_fsizetd
);
6304 error
= zfs_clone_range(VTOZ(invp
), ap
->a_inoffp
, VTOZ(outvp
),
6305 ap
->a_outoffp
, &len
, ap
->a_outcred
);
6306 if (error
== EXDEV
|| error
== EAGAIN
|| error
== EINVAL
||
6307 error
== EOPNOTSUPP
)
6308 goto bad_locked_fallback
;
6309 *ap
->a_lenp
= (size_t)len
;
6315 vn_finished_write(mp
);
6318 bad_locked_fallback
:
6324 vn_finished_write(mp
);
6325 error
= vn_generic_copy_file_range(ap
->a_invp
, ap
->a_inoffp
,
6326 ap
->a_outvp
, ap
->a_outoffp
, ap
->a_lenp
, ap
->a_flags
,
6327 ap
->a_incred
, ap
->a_outcred
, ap
->a_fsizetd
);
6332 struct vop_vector zfs_vnodeops
;
6333 struct vop_vector zfs_fifoops
;
6334 struct vop_vector zfs_shareops
;
6336 struct vop_vector zfs_vnodeops
= {
6337 .vop_default
= &default_vnodeops
,
6338 .vop_inactive
= zfs_freebsd_inactive
,
6339 #if __FreeBSD_version >= 1300042
6340 .vop_need_inactive
= zfs_freebsd_need_inactive
,
6342 .vop_reclaim
= zfs_freebsd_reclaim
,
6343 #if __FreeBSD_version >= 1300102
6344 .vop_fplookup_vexec
= zfs_freebsd_fplookup_vexec
,
6346 #if __FreeBSD_version >= 1300139
6347 .vop_fplookup_symlink
= zfs_freebsd_fplookup_symlink
,
6349 .vop_access
= zfs_freebsd_access
,
6350 .vop_allocate
= VOP_EINVAL
,
6351 #if __FreeBSD_version >= 1400032
6352 .vop_deallocate
= zfs_deallocate
,
6354 .vop_lookup
= zfs_cache_lookup
,
6355 .vop_cachedlookup
= zfs_freebsd_cachedlookup
,
6356 .vop_getattr
= zfs_freebsd_getattr
,
6357 .vop_setattr
= zfs_freebsd_setattr
,
6358 .vop_create
= zfs_freebsd_create
,
6359 .vop_mknod
= (vop_mknod_t
*)zfs_freebsd_create
,
6360 .vop_mkdir
= zfs_freebsd_mkdir
,
6361 .vop_readdir
= zfs_freebsd_readdir
,
6362 .vop_fsync
= zfs_freebsd_fsync
,
6363 .vop_open
= zfs_freebsd_open
,
6364 .vop_close
= zfs_freebsd_close
,
6365 .vop_rmdir
= zfs_freebsd_rmdir
,
6366 .vop_ioctl
= zfs_freebsd_ioctl
,
6367 .vop_link
= zfs_freebsd_link
,
6368 .vop_symlink
= zfs_freebsd_symlink
,
6369 .vop_readlink
= zfs_freebsd_readlink
,
6370 .vop_read
= zfs_freebsd_read
,
6371 .vop_write
= zfs_freebsd_write
,
6372 .vop_remove
= zfs_freebsd_remove
,
6373 .vop_rename
= zfs_freebsd_rename
,
6374 .vop_pathconf
= zfs_freebsd_pathconf
,
6375 .vop_bmap
= zfs_freebsd_bmap
,
6376 .vop_fid
= zfs_freebsd_fid
,
6377 .vop_getextattr
= zfs_getextattr
,
6378 .vop_deleteextattr
= zfs_deleteextattr
,
6379 .vop_setextattr
= zfs_setextattr
,
6380 .vop_listextattr
= zfs_listextattr
,
6381 .vop_getacl
= zfs_freebsd_getacl
,
6382 .vop_setacl
= zfs_freebsd_setacl
,
6383 .vop_aclcheck
= zfs_freebsd_aclcheck
,
6384 .vop_getpages
= zfs_freebsd_getpages
,
6385 .vop_putpages
= zfs_freebsd_putpages
,
6386 .vop_vptocnp
= zfs_vptocnp
,
6387 #if __FreeBSD_version >= 1300064
6388 .vop_lock1
= vop_lock
,
6389 .vop_unlock
= vop_unlock
,
6390 .vop_islocked
= vop_islocked
,
6392 #if __FreeBSD_version >= 1400043
6393 .vop_add_writecount
= vop_stdadd_writecount_nomsync
,
6395 #if __FreeBSD_version >= 1300039
6396 .vop_copy_file_range
= zfs_freebsd_copy_file_range
,
6399 VFS_VOP_VECTOR_REGISTER(zfs_vnodeops
);
6401 struct vop_vector zfs_fifoops
= {
6402 .vop_default
= &fifo_specops
,
6403 .vop_fsync
= zfs_freebsd_fsync
,
6404 #if __FreeBSD_version >= 1300102
6405 .vop_fplookup_vexec
= zfs_freebsd_fplookup_vexec
,
6407 #if __FreeBSD_version >= 1300139
6408 .vop_fplookup_symlink
= zfs_freebsd_fplookup_symlink
,
6410 .vop_access
= zfs_freebsd_access
,
6411 .vop_getattr
= zfs_freebsd_getattr
,
6412 .vop_inactive
= zfs_freebsd_inactive
,
6413 .vop_read
= VOP_PANIC
,
6414 .vop_reclaim
= zfs_freebsd_reclaim
,
6415 .vop_setattr
= zfs_freebsd_setattr
,
6416 .vop_write
= VOP_PANIC
,
6417 .vop_pathconf
= zfs_freebsd_pathconf
,
6418 .vop_fid
= zfs_freebsd_fid
,
6419 .vop_getacl
= zfs_freebsd_getacl
,
6420 .vop_setacl
= zfs_freebsd_setacl
,
6421 .vop_aclcheck
= zfs_freebsd_aclcheck
,
6422 #if __FreeBSD_version >= 1400043
6423 .vop_add_writecount
= vop_stdadd_writecount_nomsync
,
6426 VFS_VOP_VECTOR_REGISTER(zfs_fifoops
);
6429 * special share hidden files vnode operations template
6431 struct vop_vector zfs_shareops
= {
6432 .vop_default
= &default_vnodeops
,
6433 #if __FreeBSD_version >= 1300121
6434 .vop_fplookup_vexec
= VOP_EAGAIN
,
6436 #if __FreeBSD_version >= 1300139
6437 .vop_fplookup_symlink
= VOP_EAGAIN
,
6439 .vop_access
= zfs_freebsd_access
,
6440 .vop_inactive
= zfs_freebsd_inactive
,
6441 .vop_reclaim
= zfs_freebsd_reclaim
,
6442 .vop_fid
= zfs_freebsd_fid
,
6443 .vop_pathconf
= zfs_freebsd_pathconf
,
6444 #if __FreeBSD_version >= 1400043
6445 .vop_add_writecount
= vop_stdadd_writecount_nomsync
,
6448 VFS_VOP_VECTOR_REGISTER(zfs_shareops
);
6450 ZFS_MODULE_PARAM(zfs
, zfs_
, xattr_compat
, INT
, ZMOD_RW
,
6451 "Use legacy ZFS xattr naming for writing new user namespace xattrs");