1 /* $NetBSD: tmpfs_vnops.c,v 1.39 2007/07/23 15:41:01 jmmv Exp $ */
4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 * Copyright (c) 2005, 2006 The NetBSD Foundation, Inc.
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Julio M. Merino Vidal, developed as part of Google's Summer of Code
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
36 * tmpfs vnode interface.
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/dirent.h>
44 #include <sys/fcntl.h>
46 #include <sys/limits.h>
47 #include <sys/lockf.h>
49 #include <sys/mount.h>
50 #include <sys/namei.h>
53 #include <sys/rwlock.h>
54 #include <sys/sched.h>
56 #include <sys/sysctl.h>
57 #include <sys/unistd.h>
58 #include <sys/vnode.h>
60 #include <security/audit/audit.h>
61 #include <security/mac/mac_framework.h>
64 #include <vm/vm_param.h>
65 #include <vm/vm_object.h>
67 #include <fs/tmpfs/tmpfs_vnops.h>
68 #include <fs/tmpfs/tmpfs.h>
70 SYSCTL_DECL(_vfs_tmpfs);
73 static volatile int tmpfs_rename_restarts;
74 SYSCTL_INT(_vfs_tmpfs, OID_AUTO, rename_restarts, CTLFLAG_RD,
75 __DEVOLATILE(int *, &tmpfs_rename_restarts), 0,
76 "Times rename had to restart due to lock contention");
79 tmpfs_vn_get_ino_alloc(struct mount *mp, void *arg, int lkflags,
83 return (tmpfs_alloc_vp(mp, arg, lkflags, rvp));
87 tmpfs_lookup1(struct vnode *dvp, struct vnode **vpp, struct componentname *cnp)
89 struct tmpfs_dirent *de;
90 struct tmpfs_node *dnode, *pnode;
91 struct tmpfs_mount *tm;
94 /* Caller assumes responsibility for ensuring access (VEXEC). */
95 dnode = VP_TO_TMPFS_DIR(dvp);
98 /* We cannot be requesting the parent directory of the root node. */
99 MPASS(IMPLIES(dnode->tn_type == VDIR &&
100 dnode->tn_dir.tn_parent == dnode,
101 !(cnp->cn_flags & ISDOTDOT)));
103 TMPFS_ASSERT_LOCKED(dnode);
104 if (dnode->tn_dir.tn_parent == NULL) {
108 if (cnp->cn_flags & ISDOTDOT) {
109 tm = VFS_TO_TMPFS(dvp->v_mount);
110 pnode = dnode->tn_dir.tn_parent;
111 tmpfs_ref_node(pnode);
112 error = vn_vget_ino_gen(dvp, tmpfs_vn_get_ino_alloc,
113 pnode, cnp->cn_lkflags, vpp);
114 tmpfs_free_node(tm, pnode);
117 } else if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.') {
122 de = tmpfs_dir_lookup(dnode, NULL, cnp);
123 if (de != NULL && de->td_node == NULL)
124 cnp->cn_flags |= ISWHITEOUT;
125 if (de == NULL || de->td_node == NULL) {
127 * The entry was not found in the directory.
128 * This is OK if we are creating or renaming an
129 * entry and are working on the last component of
132 if ((cnp->cn_flags & ISLASTCN) &&
133 (cnp->cn_nameiop == CREATE || \
134 cnp->cn_nameiop == RENAME ||
135 (cnp->cn_nameiop == DELETE &&
136 cnp->cn_flags & DOWHITEOUT &&
137 cnp->cn_flags & ISWHITEOUT))) {
138 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred,
144 * Keep the component name in the buffer for
147 cnp->cn_flags |= SAVENAME;
153 struct tmpfs_node *tnode;
156 * The entry was found, so get its associated
162 * If we are not at the last path component and
163 * found a non-directory or non-link entry (which
164 * may itself be pointing to a directory), raise
167 if ((tnode->tn_type != VDIR &&
168 tnode->tn_type != VLNK) &&
169 !(cnp->cn_flags & ISLASTCN)) {
175 * If we are deleting or renaming the entry, keep
176 * track of its tmpfs_dirent so that it can be
177 * easily deleted later.
179 if ((cnp->cn_flags & ISLASTCN) &&
180 (cnp->cn_nameiop == DELETE ||
181 cnp->cn_nameiop == RENAME)) {
182 error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred,
187 /* Allocate a new vnode on the matching entry. */
188 error = tmpfs_alloc_vp(dvp->v_mount, tnode,
189 cnp->cn_lkflags, vpp);
193 if ((dnode->tn_mode & S_ISTXT) &&
194 VOP_ACCESS(dvp, VADMIN, cnp->cn_cred,
195 cnp->cn_thread) && VOP_ACCESS(*vpp, VADMIN,
196 cnp->cn_cred, cnp->cn_thread)) {
202 cnp->cn_flags |= SAVENAME;
204 error = tmpfs_alloc_vp(dvp->v_mount, tnode,
205 cnp->cn_lkflags, vpp);
213 * Store the result of this lookup in the cache. Avoid this if the
214 * request was for creation, as it does not improve timings on
217 if ((cnp->cn_flags & MAKEENTRY) != 0 && tmpfs_use_nc(dvp))
218 cache_enter(dvp, *vpp, cnp);
222 * If there were no errors, *vpp cannot be null and it must be
225 MPASS(IFF(error == 0, *vpp != NULLVP && VOP_ISLOCKED(*vpp)));
231 tmpfs_cached_lookup(struct vop_cachedlookup_args *v)
234 return (tmpfs_lookup1(v->a_dvp, v->a_vpp, v->a_cnp));
238 tmpfs_lookup(struct vop_lookup_args *v)
240 struct vnode *dvp = v->a_dvp;
241 struct vnode **vpp = v->a_vpp;
242 struct componentname *cnp = v->a_cnp;
245 /* Check accessibility of requested node as a first step. */
246 error = vn_dir_check_exec(dvp, cnp);
250 return (tmpfs_lookup1(dvp, vpp, cnp));
254 tmpfs_create(struct vop_create_args *v)
256 struct vnode *dvp = v->a_dvp;
257 struct vnode **vpp = v->a_vpp;
258 struct componentname *cnp = v->a_cnp;
259 struct vattr *vap = v->a_vap;
262 MPASS(vap->va_type == VREG || vap->va_type == VSOCK);
264 error = tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL);
265 if (error == 0 && (cnp->cn_flags & MAKEENTRY) != 0 && tmpfs_use_nc(dvp))
266 cache_enter(dvp, *vpp, cnp);
271 tmpfs_mknod(struct vop_mknod_args *v)
273 struct vnode *dvp = v->a_dvp;
274 struct vnode **vpp = v->a_vpp;
275 struct componentname *cnp = v->a_cnp;
276 struct vattr *vap = v->a_vap;
278 if (vap->va_type != VBLK && vap->va_type != VCHR &&
279 vap->va_type != VFIFO)
282 return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL);
285 struct fileops tmpfs_fnops;
288 tmpfs_open(struct vop_open_args *v)
291 struct tmpfs_node *node;
297 node = VP_TO_TMPFS_NODE(vp);
300 * The file is still active but all its names have been removed
301 * (e.g. by a "rmdir $(pwd)"). It cannot be opened any more as
302 * it is about to die.
304 if (node->tn_links < 1)
307 /* If the file is marked append-only, deny write requests. */
308 if (node->tn_flags & APPEND && (mode & (FWRITE | O_APPEND)) == FWRITE)
312 /* For regular files, the call below is nop. */
313 KASSERT(vp->v_type != VREG || (node->tn_reg.tn_aobj->flags &
314 OBJ_DEAD) == 0, ("dead object"));
315 vnode_create_vobject(vp, node->tn_size, v->a_td);
319 MPASS(fp == NULL || fp->f_data == NULL);
320 if (error == 0 && fp != NULL && vp->v_type == VREG) {
321 tmpfs_ref_node(node);
322 finit_vnode(fp, mode, node, &tmpfs_fnops);
329 tmpfs_close(struct vop_close_args *v)
331 struct vnode *vp = v->a_vp;
333 /* Update node times. */
340 tmpfs_fo_close(struct file *fp, struct thread *td)
342 struct tmpfs_node *node;
346 MPASS(node->tn_type == VREG);
347 tmpfs_free_node(node->tn_reg.tn_tmp, node);
349 return (vnops.fo_close(fp, td));
353 * VOP_FPLOOKUP_VEXEC routines are subject to special circumstances, see
354 * the comment above cache_fplookup for details.
357 tmpfs_fplookup_vexec(struct vop_fplookup_vexec_args *v)
360 struct tmpfs_node *node;
365 node = VP_TO_TMPFS_NODE_SMR(vp);
366 if (__predict_false(node == NULL))
369 all_x = S_IXUSR | S_IXGRP | S_IXOTH;
370 mode = atomic_load_short(&node->tn_mode);
371 if (__predict_true((mode & all_x) == all_x))
375 return (vaccess_vexec_smr(mode, node->tn_uid, node->tn_gid, cred));
379 tmpfs_access(struct vop_access_args *v)
381 struct vnode *vp = v->a_vp;
382 accmode_t accmode = v->a_accmode;
383 struct ucred *cred = v->a_cred;
384 mode_t all_x = S_IXUSR | S_IXGRP | S_IXOTH;
386 struct tmpfs_node *node;
388 MPASS(VOP_ISLOCKED(vp));
390 node = VP_TO_TMPFS_NODE(vp);
393 * Common case path lookup.
395 if (__predict_true(accmode == VEXEC && (node->tn_mode & all_x) == all_x))
398 switch (vp->v_type) {
404 if (accmode & VWRITE && vp->v_mount->mnt_flag & MNT_RDONLY) {
424 if (accmode & VWRITE && node->tn_flags & IMMUTABLE) {
429 error = vaccess(vp->v_type, node->tn_mode, node->tn_uid, node->tn_gid,
433 MPASS(VOP_ISLOCKED(vp));
439 tmpfs_stat(struct vop_stat_args *v)
441 struct vnode *vp = v->a_vp;
442 struct stat *sb = v->a_sb;
444 struct tmpfs_node *node;
447 node = VP_TO_TMPFS_NODE(vp);
449 tmpfs_update_getattr(vp);
451 error = vop_stat_helper_pre(v);
452 if (__predict_false(error))
455 sb->st_dev = vp->v_mount->mnt_stat.f_fsid.val[0];
456 sb->st_ino = node->tn_id;
457 sb->st_mode = node->tn_mode | VTTOIF(vp->v_type);
458 sb->st_nlink = node->tn_links;
459 sb->st_uid = node->tn_uid;
460 sb->st_gid = node->tn_gid;
461 sb->st_rdev = (vp->v_type == VBLK || vp->v_type == VCHR) ?
462 node->tn_rdev : NODEV;
463 sb->st_size = node->tn_size;
464 sb->st_atim.tv_sec = node->tn_atime.tv_sec;
465 sb->st_atim.tv_nsec = node->tn_atime.tv_nsec;
466 sb->st_mtim.tv_sec = node->tn_mtime.tv_sec;
467 sb->st_mtim.tv_nsec = node->tn_mtime.tv_nsec;
468 sb->st_ctim.tv_sec = node->tn_ctime.tv_sec;
469 sb->st_ctim.tv_nsec = node->tn_ctime.tv_nsec;
470 sb->st_birthtim.tv_sec = node->tn_birthtime.tv_sec;
471 sb->st_birthtim.tv_nsec = node->tn_birthtime.tv_nsec;
472 sb->st_blksize = PAGE_SIZE;
473 sb->st_flags = node->tn_flags;
474 sb->st_gen = node->tn_gen;
475 if (vp->v_type == VREG) {
476 obj = node->tn_reg.tn_aobj;
477 sb->st_blocks = (u_quad_t)obj->resident_page_count * PAGE_SIZE;
479 sb->st_blocks = node->tn_size;
480 sb->st_blocks /= S_BLKSIZE;
481 return (vop_stat_helper_post(v, error));
485 tmpfs_getattr(struct vop_getattr_args *v)
487 struct vnode *vp = v->a_vp;
488 struct vattr *vap = v->a_vap;
490 struct tmpfs_node *node;
492 node = VP_TO_TMPFS_NODE(vp);
494 tmpfs_update_getattr(vp);
496 vap->va_type = vp->v_type;
497 vap->va_mode = node->tn_mode;
498 vap->va_nlink = node->tn_links;
499 vap->va_uid = node->tn_uid;
500 vap->va_gid = node->tn_gid;
501 vap->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
502 vap->va_fileid = node->tn_id;
503 vap->va_size = node->tn_size;
504 vap->va_blocksize = PAGE_SIZE;
505 vap->va_atime = node->tn_atime;
506 vap->va_mtime = node->tn_mtime;
507 vap->va_ctime = node->tn_ctime;
508 vap->va_birthtime = node->tn_birthtime;
509 vap->va_gen = node->tn_gen;
510 vap->va_flags = node->tn_flags;
511 vap->va_rdev = (vp->v_type == VBLK || vp->v_type == VCHR) ?
512 node->tn_rdev : NODEV;
513 if (vp->v_type == VREG) {
514 obj = node->tn_reg.tn_aobj;
515 vap->va_bytes = (u_quad_t)obj->resident_page_count * PAGE_SIZE;
517 vap->va_bytes = node->tn_size;
524 tmpfs_setattr(struct vop_setattr_args *v)
526 struct vnode *vp = v->a_vp;
527 struct vattr *vap = v->a_vap;
528 struct ucred *cred = v->a_cred;
529 struct thread *td = curthread;
533 MPASS(VOP_ISLOCKED(vp));
534 ASSERT_VOP_IN_SEQC(vp);
538 /* Abort if any unsettable attribute is given. */
539 if (vap->va_type != VNON ||
540 vap->va_nlink != VNOVAL ||
541 vap->va_fsid != VNOVAL ||
542 vap->va_fileid != VNOVAL ||
543 vap->va_blocksize != VNOVAL ||
544 vap->va_gen != VNOVAL ||
545 vap->va_rdev != VNOVAL ||
546 vap->va_bytes != VNOVAL)
549 if (error == 0 && (vap->va_flags != VNOVAL))
550 error = tmpfs_chflags(vp, vap->va_flags, cred, td);
552 if (error == 0 && (vap->va_size != VNOVAL))
553 error = tmpfs_chsize(vp, vap->va_size, cred, td);
555 if (error == 0 && (vap->va_uid != VNOVAL || vap->va_gid != VNOVAL))
556 error = tmpfs_chown(vp, vap->va_uid, vap->va_gid, cred, td);
558 if (error == 0 && (vap->va_mode != (mode_t)VNOVAL))
559 error = tmpfs_chmod(vp, vap->va_mode, cred, td);
561 if (error == 0 && ((vap->va_atime.tv_sec != VNOVAL &&
562 vap->va_atime.tv_nsec != VNOVAL) ||
563 (vap->va_mtime.tv_sec != VNOVAL &&
564 vap->va_mtime.tv_nsec != VNOVAL) ||
565 (vap->va_birthtime.tv_sec != VNOVAL &&
566 vap->va_birthtime.tv_nsec != VNOVAL)))
567 error = tmpfs_chtimes(vp, vap, cred, td);
570 * Update the node times. We give preference to the error codes
571 * generated by this function rather than the ones that may arise
576 MPASS(VOP_ISLOCKED(vp));
582 tmpfs_read(struct vop_read_args *v)
586 struct tmpfs_node *node;
589 if (vp->v_type != VREG)
592 if (uio->uio_offset < 0)
594 node = VP_TO_TMPFS_NODE(vp);
595 tmpfs_set_accessed(VFS_TO_TMPFS(vp->v_mount), node);
596 return (uiomove_object(node->tn_reg.tn_aobj, node->tn_size, uio));
600 tmpfs_read_pgcache(struct vop_read_pgcache_args *v)
603 struct tmpfs_node *node;
609 VNPASS((vn_irflag_read(vp) & VIRF_PGREAD) != 0, vp);
611 if (v->a_uio->uio_offset < 0)
617 node = VP_TO_TMPFS_NODE_SMR(vp);
620 MPASS(node->tn_type == VREG);
621 MPASS(node->tn_refcount >= 1);
622 object = node->tn_reg.tn_aobj;
626 MPASS(object->type == tmpfs_pager_type);
627 MPASS((object->flags & (OBJ_ANON | OBJ_DEAD | OBJ_SWAP)) ==
629 if (!VN_IS_DOOMED(vp)) {
630 /* size cannot become shorter due to rangelock. */
631 size = node->tn_size;
632 tmpfs_set_accessed(node->tn_reg.tn_tmp, node);
634 error = uiomove_object(object, size, v->a_uio);
643 tmpfs_write(struct vop_write_args *v)
647 struct tmpfs_node *node;
654 ioflag = v->a_ioflag;
656 node = VP_TO_TMPFS_NODE(vp);
657 oldsize = node->tn_size;
659 if (uio->uio_offset < 0 || vp->v_type != VREG)
661 if (uio->uio_resid == 0)
663 if (ioflag & IO_APPEND)
664 uio->uio_offset = node->tn_size;
665 if (uio->uio_offset + uio->uio_resid >
666 VFS_TO_TMPFS(vp->v_mount)->tm_maxfilesize)
668 if (vn_rlimit_fsize(vp, uio, uio->uio_td))
670 if (uio->uio_offset + uio->uio_resid > node->tn_size) {
671 error = tmpfs_reg_resize(vp, uio->uio_offset + uio->uio_resid,
677 error = uiomove_object(node->tn_reg.tn_aobj, node->tn_size, uio);
678 node->tn_status |= TMPFS_NODE_MODIFIED | TMPFS_NODE_CHANGED;
679 node->tn_accessed = true;
680 if (node->tn_mode & (S_ISUID | S_ISGID)) {
681 if (priv_check_cred(v->a_cred, PRIV_VFS_RETAINSUGID)) {
682 newmode = node->tn_mode & ~(S_ISUID | S_ISGID);
683 vn_seqc_write_begin(vp);
684 atomic_store_short(&node->tn_mode, newmode);
685 vn_seqc_write_end(vp);
689 (void)tmpfs_reg_resize(vp, oldsize, TRUE);
692 MPASS(IMPLIES(error == 0, uio->uio_resid == 0));
693 MPASS(IMPLIES(error != 0, oldsize == node->tn_size));
699 tmpfs_fsync(struct vop_fsync_args *v)
701 struct vnode *vp = v->a_vp;
703 MPASS(VOP_ISLOCKED(vp));
705 tmpfs_check_mtime(vp);
712 tmpfs_remove(struct vop_remove_args *v)
714 struct vnode *dvp = v->a_dvp;
715 struct vnode *vp = v->a_vp;
718 struct tmpfs_dirent *de;
719 struct tmpfs_mount *tmp;
720 struct tmpfs_node *dnode;
721 struct tmpfs_node *node;
723 MPASS(VOP_ISLOCKED(dvp));
724 MPASS(VOP_ISLOCKED(vp));
726 if (vp->v_type == VDIR) {
731 dnode = VP_TO_TMPFS_DIR(dvp);
732 node = VP_TO_TMPFS_NODE(vp);
733 tmp = VFS_TO_TMPFS(vp->v_mount);
734 de = tmpfs_dir_lookup(dnode, node, v->a_cnp);
737 /* Files marked as immutable or append-only cannot be deleted. */
738 if ((node->tn_flags & (IMMUTABLE | APPEND | NOUNLINK)) ||
739 (dnode->tn_flags & APPEND)) {
744 /* Remove the entry from the directory; as it is a file, we do not
745 * have to change the number of hard links of the directory. */
746 tmpfs_dir_detach(dvp, de);
747 if (v->a_cnp->cn_flags & DOWHITEOUT)
748 tmpfs_dir_whiteout_add(dvp, v->a_cnp);
750 /* Free the directory entry we just deleted. Note that the node
751 * referred by it will not be removed until the vnode is really
753 tmpfs_free_dirent(tmp, de);
755 node->tn_status |= TMPFS_NODE_CHANGED;
756 node->tn_accessed = true;
764 tmpfs_link(struct vop_link_args *v)
766 struct vnode *dvp = v->a_tdvp;
767 struct vnode *vp = v->a_vp;
768 struct componentname *cnp = v->a_cnp;
771 struct tmpfs_dirent *de;
772 struct tmpfs_node *node;
774 MPASS(VOP_ISLOCKED(dvp));
775 MPASS(cnp->cn_flags & HASBUF);
776 MPASS(dvp != vp); /* XXX When can this be false? */
777 node = VP_TO_TMPFS_NODE(vp);
779 /* Ensure that we do not overflow the maximum number of links imposed
781 MPASS(node->tn_links <= TMPFS_LINK_MAX);
782 if (node->tn_links == TMPFS_LINK_MAX) {
787 /* We cannot create links of files marked immutable or append-only. */
788 if (node->tn_flags & (IMMUTABLE | APPEND)) {
793 /* Allocate a new directory entry to represent the node. */
794 error = tmpfs_alloc_dirent(VFS_TO_TMPFS(vp->v_mount), node,
795 cnp->cn_nameptr, cnp->cn_namelen, &de);
799 /* Insert the new directory entry into the appropriate directory. */
800 if (cnp->cn_flags & ISWHITEOUT)
801 tmpfs_dir_whiteout_remove(dvp, cnp);
802 tmpfs_dir_attach(dvp, de);
804 /* vp link count has changed, so update node times. */
805 node->tn_status |= TMPFS_NODE_CHANGED;
815 * We acquire all but fdvp locks using non-blocking acquisitions. If we
816 * fail to acquire any lock in the path we will drop all held locks,
817 * acquire the new lock in a blocking fashion, and then release it and
818 * restart the rename. This acquire/release step ensures that we do not
819 * spin on a lock waiting for release. On error release all vnode locks
820 * and decrement references the way tmpfs_rename() would do.
823 tmpfs_rename_relock(struct vnode *fdvp, struct vnode **fvpp,
824 struct vnode *tdvp, struct vnode **tvpp,
825 struct componentname *fcnp, struct componentname *tcnp)
829 struct tmpfs_dirent *de;
830 int error, restarts = 0;
833 if (*tvpp != NULL && *tvpp != tdvp)
839 error = vn_lock(fdvp, LK_EXCLUSIVE);
842 if (vn_lock(tdvp, LK_EXCLUSIVE | LK_NOWAIT) != 0) {
844 error = vn_lock(tdvp, LK_EXCLUSIVE);
851 * Re-resolve fvp to be certain it still exists and fetch the
854 de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(fdvp), NULL, fcnp);
858 if ((fcnp->cn_flags & ISDOTDOT) != 0 ||
859 (fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.'))
865 error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE | LK_NOWAIT, &nvp);
871 error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE, &nvp);
876 * Concurrent rename race.
891 * Re-resolve tvp and acquire the vnode lock if present.
893 de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(tdvp), NULL, tcnp);
895 * If tvp disappeared we just carry on.
897 if (de == NULL && *tvpp != NULL) {
902 * Get the tvp ino if the lookup succeeded. We may have to restart
903 * if the non-blocking acquire fails.
907 error = tmpfs_alloc_vp(mp, de->td_node,
908 LK_EXCLUSIVE | LK_NOWAIT, &nvp);
917 error = tmpfs_alloc_vp(mp, de->td_node, LK_EXCLUSIVE,
923 * fdvp contains fvp, thus tvp (=fdvp) is not empty.
932 tmpfs_rename_restarts += restarts;
942 tmpfs_rename_restarts += restarts;
948 tmpfs_rename(struct vop_rename_args *v)
950 struct vnode *fdvp = v->a_fdvp;
951 struct vnode *fvp = v->a_fvp;
952 struct componentname *fcnp = v->a_fcnp;
953 struct vnode *tdvp = v->a_tdvp;
954 struct vnode *tvp = v->a_tvp;
955 struct componentname *tcnp = v->a_tcnp;
957 struct tmpfs_dirent *de;
958 struct tmpfs_mount *tmp;
959 struct tmpfs_node *fdnode;
960 struct tmpfs_node *fnode;
961 struct tmpfs_node *tnode;
962 struct tmpfs_node *tdnode;
966 MPASS(VOP_ISLOCKED(tdvp));
967 MPASS(IMPLIES(tvp != NULL, VOP_ISLOCKED(tvp)));
968 MPASS(fcnp->cn_flags & HASBUF);
969 MPASS(tcnp->cn_flags & HASBUF);
971 want_seqc_end = false;
974 * Disallow cross-device renames.
975 * XXX Why isn't this done by the caller?
977 if (fvp->v_mount != tdvp->v_mount ||
978 (tvp != NULL && fvp->v_mount != tvp->v_mount)) {
983 /* If source and target are the same file, there is nothing to do. */
990 * If we need to move the directory between entries, lock the
991 * source so that we can safely operate on it.
993 if (fdvp != tdvp && fdvp != tvp) {
994 if (vn_lock(fdvp, LK_EXCLUSIVE | LK_NOWAIT) != 0) {
995 error = tmpfs_rename_relock(fdvp, &fvp, tdvp, &tvp,
999 ASSERT_VOP_ELOCKED(fdvp,
1000 "tmpfs_rename: fdvp not locked");
1001 ASSERT_VOP_ELOCKED(tdvp,
1002 "tmpfs_rename: tdvp not locked");
1004 ASSERT_VOP_ELOCKED(tvp,
1005 "tmpfs_rename: tvp not locked");
1014 vn_seqc_write_begin(tvp);
1015 vn_seqc_write_begin(tdvp);
1016 vn_seqc_write_begin(fvp);
1017 vn_seqc_write_begin(fdvp);
1018 want_seqc_end = true;
1020 tmp = VFS_TO_TMPFS(tdvp->v_mount);
1021 tdnode = VP_TO_TMPFS_DIR(tdvp);
1022 tnode = (tvp == NULL) ? NULL : VP_TO_TMPFS_NODE(tvp);
1023 fdnode = VP_TO_TMPFS_DIR(fdvp);
1024 fnode = VP_TO_TMPFS_NODE(fvp);
1025 de = tmpfs_dir_lookup(fdnode, fnode, fcnp);
1028 * Entry can disappear before we lock fdvp,
1029 * also avoid manipulating '.' and '..' entries.
1032 if ((fcnp->cn_flags & ISDOTDOT) != 0 ||
1033 (fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.'))
1039 MPASS(de->td_node == fnode);
1042 * If re-naming a directory to another preexisting directory
1043 * ensure that the target directory is empty so that its
1044 * removal causes no side effects.
1045 * Kern_rename guarantees the destination to be a directory
1046 * if the source is one.
1049 MPASS(tnode != NULL);
1051 if ((tnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
1052 (tdnode->tn_flags & (APPEND | IMMUTABLE))) {
1057 if (fnode->tn_type == VDIR && tnode->tn_type == VDIR) {
1058 if (tnode->tn_size > 0) {
1062 } else if (fnode->tn_type == VDIR && tnode->tn_type != VDIR) {
1065 } else if (fnode->tn_type != VDIR && tnode->tn_type == VDIR) {
1069 MPASS(fnode->tn_type != VDIR &&
1070 tnode->tn_type != VDIR);
1074 if ((fnode->tn_flags & (NOUNLINK | IMMUTABLE | APPEND))
1075 || (fdnode->tn_flags & (APPEND | IMMUTABLE))) {
1081 * Ensure that we have enough memory to hold the new name, if it
1082 * has to be changed.
1084 if (fcnp->cn_namelen != tcnp->cn_namelen ||
1085 bcmp(fcnp->cn_nameptr, tcnp->cn_nameptr, fcnp->cn_namelen) != 0) {
1086 newname = malloc(tcnp->cn_namelen, M_TMPFSNAME, M_WAITOK);
1091 * If the node is being moved to another directory, we have to do
1094 if (fdnode != tdnode) {
1096 * In case we are moving a directory, we have to adjust its
1097 * parent to point to the new parent.
1099 if (de->td_node->tn_type == VDIR) {
1100 struct tmpfs_node *n;
1103 * Ensure the target directory is not a child of the
1104 * directory being moved. Otherwise, we'd end up
1109 * TMPFS_LOCK guaranties that no nodes are freed while
1110 * traversing the list. Nodes can only be marked as
1111 * removed: tn_parent == NULL.
1115 while (n != n->tn_dir.tn_parent) {
1116 struct tmpfs_node *parent;
1119 TMPFS_NODE_UNLOCK(n);
1122 if (newname != NULL)
1123 free(newname, M_TMPFSNAME);
1126 parent = n->tn_dir.tn_parent;
1127 TMPFS_NODE_UNLOCK(n);
1128 if (parent == NULL) {
1132 TMPFS_NODE_LOCK(parent);
1133 if (parent->tn_dir.tn_parent == NULL) {
1134 TMPFS_NODE_UNLOCK(parent);
1143 if (newname != NULL)
1144 free(newname, M_TMPFSNAME);
1147 TMPFS_NODE_UNLOCK(n);
1149 /* Adjust the parent pointer. */
1150 TMPFS_VALIDATE_DIR(fnode);
1151 TMPFS_NODE_LOCK(de->td_node);
1152 de->td_node->tn_dir.tn_parent = tdnode;
1153 TMPFS_NODE_UNLOCK(de->td_node);
1156 * As a result of changing the target of the '..'
1157 * entry, the link count of the source and target
1158 * directories has to be adjusted.
1160 TMPFS_NODE_LOCK(tdnode);
1161 TMPFS_ASSERT_LOCKED(tdnode);
1163 TMPFS_NODE_UNLOCK(tdnode);
1165 TMPFS_NODE_LOCK(fdnode);
1166 TMPFS_ASSERT_LOCKED(fdnode);
1168 TMPFS_NODE_UNLOCK(fdnode);
1173 * Do the move: just remove the entry from the source directory
1174 * and insert it into the target one.
1176 tmpfs_dir_detach(fdvp, de);
1178 if (fcnp->cn_flags & DOWHITEOUT)
1179 tmpfs_dir_whiteout_add(fdvp, fcnp);
1180 if (tcnp->cn_flags & ISWHITEOUT)
1181 tmpfs_dir_whiteout_remove(tdvp, tcnp);
1184 * If the name has changed, we need to make it effective by changing
1185 * it in the directory entry.
1187 if (newname != NULL) {
1188 MPASS(tcnp->cn_namelen <= MAXNAMLEN);
1190 free(de->ud.td_name, M_TMPFSNAME);
1191 de->ud.td_name = newname;
1192 tmpfs_dirent_init(de, tcnp->cn_nameptr, tcnp->cn_namelen);
1194 fnode->tn_status |= TMPFS_NODE_CHANGED;
1195 tdnode->tn_status |= TMPFS_NODE_MODIFIED;
1199 * If we are overwriting an entry, we have to remove the old one
1200 * from the target directory.
1203 struct tmpfs_dirent *tde;
1205 /* Remove the old entry from the target directory. */
1206 tde = tmpfs_dir_lookup(tdnode, tnode, tcnp);
1207 tmpfs_dir_detach(tdvp, tde);
1210 * Free the directory entry we just deleted. Note that the
1211 * node referred by it will not be removed until the vnode is
1214 tmpfs_free_dirent(VFS_TO_TMPFS(tvp->v_mount), tde);
1217 tmpfs_dir_attach(tdvp, de);
1219 if (tmpfs_use_nc(fvp)) {
1220 cache_vop_rename(fdvp, fvp, tdvp, tvp, fcnp, tcnp);
1226 if (fdvp != tdvp && fdvp != tvp)
1230 if (want_seqc_end) {
1232 vn_seqc_write_end(tvp);
1233 vn_seqc_write_end(tdvp);
1234 vn_seqc_write_end(fvp);
1235 vn_seqc_write_end(fdvp);
1239 * Release target nodes.
1240 * XXX: I don't understand when tdvp can be the same as tvp, but
1241 * other code takes care of this...
1250 /* Release source nodes. */
1258 tmpfs_mkdir(struct vop_mkdir_args *v)
1260 struct vnode *dvp = v->a_dvp;
1261 struct vnode **vpp = v->a_vpp;
1262 struct componentname *cnp = v->a_cnp;
1263 struct vattr *vap = v->a_vap;
1265 MPASS(vap->va_type == VDIR);
1267 return tmpfs_alloc_file(dvp, vpp, vap, cnp, NULL);
1271 tmpfs_rmdir(struct vop_rmdir_args *v)
1273 struct vnode *dvp = v->a_dvp;
1274 struct vnode *vp = v->a_vp;
1277 struct tmpfs_dirent *de;
1278 struct tmpfs_mount *tmp;
1279 struct tmpfs_node *dnode;
1280 struct tmpfs_node *node;
1282 MPASS(VOP_ISLOCKED(dvp));
1283 MPASS(VOP_ISLOCKED(vp));
1285 tmp = VFS_TO_TMPFS(dvp->v_mount);
1286 dnode = VP_TO_TMPFS_DIR(dvp);
1287 node = VP_TO_TMPFS_DIR(vp);
1289 /* Directories with more than two entries ('.' and '..') cannot be
1291 if (node->tn_size > 0) {
1296 if ((dnode->tn_flags & APPEND)
1297 || (node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1302 /* This invariant holds only if we are not trying to remove "..".
1303 * We checked for that above so this is safe now. */
1304 MPASS(node->tn_dir.tn_parent == dnode);
1306 /* Get the directory entry associated with node (vp). This was
1307 * filled by tmpfs_lookup while looking up the entry. */
1308 de = tmpfs_dir_lookup(dnode, node, v->a_cnp);
1309 MPASS(TMPFS_DIRENT_MATCHES(de,
1310 v->a_cnp->cn_nameptr,
1311 v->a_cnp->cn_namelen));
1313 /* Check flags to see if we are allowed to remove the directory. */
1314 if ((dnode->tn_flags & APPEND) != 0 ||
1315 (node->tn_flags & (NOUNLINK | IMMUTABLE | APPEND)) != 0) {
1320 /* Detach the directory entry from the directory (dnode). */
1321 tmpfs_dir_detach(dvp, de);
1322 if (v->a_cnp->cn_flags & DOWHITEOUT)
1323 tmpfs_dir_whiteout_add(dvp, v->a_cnp);
1325 /* No vnode should be allocated for this entry from this point */
1326 TMPFS_NODE_LOCK(node);
1328 node->tn_dir.tn_parent = NULL;
1329 node->tn_status |= TMPFS_NODE_CHANGED | TMPFS_NODE_MODIFIED;
1330 node->tn_accessed = true;
1332 TMPFS_NODE_UNLOCK(node);
1334 TMPFS_NODE_LOCK(dnode);
1336 dnode->tn_status |= TMPFS_NODE_CHANGED | TMPFS_NODE_MODIFIED;
1337 dnode->tn_accessed = true;
1338 TMPFS_NODE_UNLOCK(dnode);
1340 if (tmpfs_use_nc(dvp)) {
1341 cache_vop_rmdir(dvp, vp);
1344 /* Free the directory entry we just deleted. Note that the node
1345 * referred by it will not be removed until the vnode is really
1347 tmpfs_free_dirent(tmp, de);
1349 /* Release the deleted vnode (will destroy the node, notify
1350 * interested parties and clean it from the cache). */
1352 dnode->tn_status |= TMPFS_NODE_CHANGED;
1362 tmpfs_symlink(struct vop_symlink_args *v)
1364 struct vnode *dvp = v->a_dvp;
1365 struct vnode **vpp = v->a_vpp;
1366 struct componentname *cnp = v->a_cnp;
1367 struct vattr *vap = v->a_vap;
1368 const char *target = v->a_target;
1370 #ifdef notyet /* XXX FreeBSD BUG: kern_symlink is not setting VLNK */
1371 MPASS(vap->va_type == VLNK);
1373 vap->va_type = VLNK;
1376 return tmpfs_alloc_file(dvp, vpp, vap, cnp, target);
1380 tmpfs_readdir(struct vop_readdir_args *va)
1384 struct tmpfs_mount *tm;
1385 struct tmpfs_node *node;
1387 int *eofflag, *ncookies;
1389 int error, maxcookies;
1393 eofflag = va->a_eofflag;
1394 cookies = va->a_cookies;
1395 ncookies = va->a_ncookies;
1397 /* This operation only makes sense on directory nodes. */
1398 if (vp->v_type != VDIR)
1402 node = VP_TO_TMPFS_DIR(vp);
1403 tm = VFS_TO_TMPFS(vp->v_mount);
1405 startresid = uio->uio_resid;
1407 /* Allocate cookies for NFS and compat modules. */
1408 if (cookies != NULL && ncookies != NULL) {
1409 maxcookies = howmany(node->tn_size,
1410 sizeof(struct tmpfs_dirent)) + 2;
1411 *cookies = malloc(maxcookies * sizeof(**cookies), M_TEMP,
1416 if (cookies == NULL)
1417 error = tmpfs_dir_getdents(tm, node, uio, 0, NULL, NULL);
1419 error = tmpfs_dir_getdents(tm, node, uio, maxcookies, *cookies,
1422 /* Buffer was filled without hitting EOF. */
1423 if (error == EJUSTRETURN)
1424 error = (uio->uio_resid != startresid) ? 0 : EINVAL;
1426 if (error != 0 && cookies != NULL && ncookies != NULL) {
1427 free(*cookies, M_TEMP);
1432 if (eofflag != NULL)
1434 (error == 0 && uio->uio_offset == TMPFS_DIRCOOKIE_EOF);
1440 tmpfs_readlink(struct vop_readlink_args *v)
1442 struct vnode *vp = v->a_vp;
1443 struct uio *uio = v->a_uio;
1446 struct tmpfs_node *node;
1448 MPASS(uio->uio_offset == 0);
1449 MPASS(vp->v_type == VLNK);
1451 node = VP_TO_TMPFS_NODE(vp);
1453 error = uiomove(node->tn_link_target, MIN(node->tn_size, uio->uio_resid),
1455 tmpfs_set_accessed(VFS_TO_TMPFS(vp->v_mount), node);
1461 * VOP_FPLOOKUP_SYMLINK routines are subject to special circumstances, see
1462 * the comment above cache_fplookup for details.
1464 * Check tmpfs_alloc_node for tmpfs-specific synchronisation notes.
1467 tmpfs_fplookup_symlink(struct vop_fplookup_symlink_args *v)
1470 struct tmpfs_node *node;
1474 node = VP_TO_TMPFS_NODE_SMR(vp);
1475 if (__predict_false(node == NULL))
1477 if (!atomic_load_char(&node->tn_link_smr))
1479 symlink = atomic_load_ptr(&node->tn_link_target);
1480 if (symlink == NULL)
1483 return (cache_symlink_resolve(v->a_fpl, symlink, node->tn_size));
1487 tmpfs_inactive(struct vop_inactive_args *v)
1490 struct tmpfs_node *node;
1493 node = VP_TO_TMPFS_NODE(vp);
1494 if (node->tn_links == 0)
1497 tmpfs_check_mtime(vp);
1502 tmpfs_need_inactive(struct vop_need_inactive_args *ap)
1505 struct tmpfs_node *node;
1506 struct vm_object *obj;
1509 node = VP_TO_TMPFS_NODE(vp);
1510 if (node->tn_links == 0)
1512 if (vp->v_type == VREG) {
1514 if (obj->generation != obj->cleangeneration)
1523 tmpfs_reclaim(struct vop_reclaim_args *v)
1526 struct tmpfs_mount *tmp;
1527 struct tmpfs_node *node;
1531 node = VP_TO_TMPFS_NODE(vp);
1532 tmp = VFS_TO_TMPFS(vp->v_mount);
1534 if (vp->v_type == VREG)
1535 tmpfs_destroy_vobject(vp, node->tn_reg.tn_aobj);
1536 vp->v_object = NULL;
1539 TMPFS_NODE_LOCK(node);
1543 * If the node referenced by this vnode was deleted by the user,
1544 * we must free its associated data structures (now that the vnode
1545 * is being reclaimed).
1548 if (node->tn_links == 0 &&
1549 (node->tn_vpstate & TMPFS_VNODE_ALLOCATING) == 0) {
1550 node->tn_vpstate = TMPFS_VNODE_DOOMED;
1551 unlock = !tmpfs_free_node_locked(tmp, node, true);
1555 TMPFS_NODE_UNLOCK(node);
1559 MPASS(vp->v_data == NULL);
1564 tmpfs_print(struct vop_print_args *v)
1566 struct vnode *vp = v->a_vp;
1568 struct tmpfs_node *node;
1570 node = VP_TO_TMPFS_NODE(vp);
1572 printf("tag VT_TMPFS, tmpfs_node %p, flags 0x%lx, links %jd\n",
1573 node, node->tn_flags, (uintmax_t)node->tn_links);
1574 printf("\tmode 0%o, owner %d, group %d, size %jd, status 0x%x\n",
1575 node->tn_mode, node->tn_uid, node->tn_gid,
1576 (intmax_t)node->tn_size, node->tn_status);
1578 if (vp->v_type == VFIFO)
1587 tmpfs_pathconf(struct vop_pathconf_args *v)
1589 struct vnode *vp = v->a_vp;
1590 int name = v->a_name;
1591 long *retval = v->a_retval;
1599 *retval = TMPFS_LINK_MAX;
1602 case _PC_SYMLINK_MAX:
1603 *retval = MAXPATHLEN;
1611 if (vp->v_type == VDIR || vp->v_type == VFIFO)
1617 case _PC_CHOWN_RESTRICTED:
1629 case _PC_FILESIZEBITS:
1634 error = vop_stdpathconf(v);
1641 tmpfs_vptofh(struct vop_vptofh_args *ap)
1644 IN struct vnode *a_vp;
1645 IN struct fid *a_fhp;
1649 struct tmpfs_fid_data tfd;
1650 struct tmpfs_node *node;
1653 node = VP_TO_TMPFS_NODE(ap->a_vp);
1655 fhp->fid_len = sizeof(tfd);
1658 * Copy into fid_data from the stack to avoid unaligned pointer use.
1659 * See the comment in sys/mount.h on struct fid for details.
1661 tfd.tfd_id = node->tn_id;
1662 tfd.tfd_gen = node->tn_gen;
1663 memcpy(fhp->fid_data, &tfd, fhp->fid_len);
1669 tmpfs_whiteout(struct vop_whiteout_args *ap)
1671 struct vnode *dvp = ap->a_dvp;
1672 struct componentname *cnp = ap->a_cnp;
1673 struct tmpfs_dirent *de;
1675 switch (ap->a_flags) {
1679 de = tmpfs_dir_lookup(VP_TO_TMPFS_DIR(dvp), NULL, cnp);
1681 return (de->td_node == NULL ? 0 : EEXIST);
1682 return (tmpfs_dir_whiteout_add(dvp, cnp));
1684 tmpfs_dir_whiteout_remove(dvp, cnp);
1687 panic("tmpfs_whiteout: unknown op");
1692 tmpfs_vptocnp_dir(struct tmpfs_node *tn, struct tmpfs_node *tnp,
1693 struct tmpfs_dirent **pde)
1695 struct tmpfs_dir_cursor dc;
1696 struct tmpfs_dirent *de;
1698 for (de = tmpfs_dir_first(tnp, &dc); de != NULL;
1699 de = tmpfs_dir_next(tnp, &dc)) {
1700 if (de->td_node == tn) {
1709 tmpfs_vptocnp_fill(struct vnode *vp, struct tmpfs_node *tn,
1710 struct tmpfs_node *tnp, char *buf, size_t *buflen, struct vnode **dvp)
1712 struct tmpfs_dirent *de;
1715 error = vn_vget_ino_gen(vp, tmpfs_vn_get_ino_alloc, tnp, LK_SHARED,
1719 error = tmpfs_vptocnp_dir(tn, tnp, &de);
1722 i -= de->td_namelen;
1726 bcopy(de->ud.td_name, buf + i, de->td_namelen);
1743 tmpfs_vptocnp(struct vop_vptocnp_args *ap)
1745 struct vnode *vp, **dvp;
1746 struct tmpfs_node *tn, *tnp, *tnp1;
1747 struct tmpfs_dirent *de;
1748 struct tmpfs_mount *tm;
1756 buflen = ap->a_buflen;
1758 tm = VFS_TO_TMPFS(vp->v_mount);
1759 tn = VP_TO_TMPFS_NODE(vp);
1760 if (tn->tn_type == VDIR) {
1761 tnp = tn->tn_dir.tn_parent;
1764 tmpfs_ref_node(tnp);
1765 error = tmpfs_vptocnp_fill(vp, tn, tn->tn_dir.tn_parent, buf,
1767 tmpfs_free_node(tm, tnp);
1773 LIST_FOREACH_SAFE(tnp, &tm->tm_nodes_used, tn_entries, tnp1) {
1774 if (tnp->tn_type != VDIR)
1776 TMPFS_NODE_LOCK(tnp);
1777 tmpfs_ref_node(tnp);
1780 * tn_vnode cannot be instantiated while we hold the
1781 * node lock, so the directory cannot be changed while
1782 * we iterate over it. Do this to avoid instantiating
1783 * vnode for directories which cannot point to our
1786 error = tnp->tn_vnode == NULL ? tmpfs_vptocnp_dir(tn, tnp,
1790 TMPFS_NODE_UNLOCK(tnp);
1792 error = tmpfs_vptocnp_fill(vp, tn, tnp, buf, buflen,
1795 tmpfs_free_node(tm, tnp);
1798 if (VN_IS_DOOMED(vp)) {
1799 tmpfs_free_node(tm, tnp);
1803 TMPFS_NODE_LOCK(tnp);
1805 if (tmpfs_free_node_locked(tm, tnp, false)) {
1808 KASSERT(tnp->tn_refcount > 0,
1809 ("node %p refcount zero", tnp));
1810 if (tnp->tn_attached) {
1811 tnp1 = LIST_NEXT(tnp, tn_entries);
1812 TMPFS_NODE_UNLOCK(tnp);
1814 TMPFS_NODE_UNLOCK(tnp);
1815 goto restart_locked;
1824 * Vnode operations vector used for files stored in a tmpfs file system.
1826 struct vop_vector tmpfs_vnodeop_entries = {
1827 .vop_default = &default_vnodeops,
1828 .vop_lookup = vfs_cache_lookup,
1829 .vop_cachedlookup = tmpfs_cached_lookup,
1830 .vop_create = tmpfs_create,
1831 .vop_mknod = tmpfs_mknod,
1832 .vop_open = tmpfs_open,
1833 .vop_close = tmpfs_close,
1834 .vop_fplookup_vexec = tmpfs_fplookup_vexec,
1835 .vop_fplookup_symlink = tmpfs_fplookup_symlink,
1836 .vop_access = tmpfs_access,
1837 .vop_stat = tmpfs_stat,
1838 .vop_getattr = tmpfs_getattr,
1839 .vop_setattr = tmpfs_setattr,
1840 .vop_read = tmpfs_read,
1841 .vop_read_pgcache = tmpfs_read_pgcache,
1842 .vop_write = tmpfs_write,
1843 .vop_fsync = tmpfs_fsync,
1844 .vop_remove = tmpfs_remove,
1845 .vop_link = tmpfs_link,
1846 .vop_rename = tmpfs_rename,
1847 .vop_mkdir = tmpfs_mkdir,
1848 .vop_rmdir = tmpfs_rmdir,
1849 .vop_symlink = tmpfs_symlink,
1850 .vop_readdir = tmpfs_readdir,
1851 .vop_readlink = tmpfs_readlink,
1852 .vop_inactive = tmpfs_inactive,
1853 .vop_need_inactive = tmpfs_need_inactive,
1854 .vop_reclaim = tmpfs_reclaim,
1855 .vop_print = tmpfs_print,
1856 .vop_pathconf = tmpfs_pathconf,
1857 .vop_vptofh = tmpfs_vptofh,
1858 .vop_whiteout = tmpfs_whiteout,
1859 .vop_bmap = VOP_EOPNOTSUPP,
1860 .vop_vptocnp = tmpfs_vptocnp,
1861 .vop_lock1 = vop_lock,
1862 .vop_unlock = vop_unlock,
1863 .vop_islocked = vop_islocked,
1865 VFS_VOP_VECTOR_REGISTER(tmpfs_vnodeop_entries);
1868 * Same vector for mounts which do not use namecache.
1870 struct vop_vector tmpfs_vnodeop_nonc_entries = {
1871 .vop_default = &tmpfs_vnodeop_entries,
1872 .vop_lookup = tmpfs_lookup,
1874 VFS_VOP_VECTOR_REGISTER(tmpfs_vnodeop_nonc_entries);