2 * modified for EXT2FS support in Lites 1.1
4 * Aug 1995, Godmar Back (gback@cs.utah.edu)
5 * University of Utah, Department of Computer Science
8 * Copyright (c) 1982, 1986, 1989, 1993
9 * The Regents of the University of California. All rights reserved.
10 * (c) UNIX System Laboratories, Inc.
11 * All or some portions of this file are derived from material licensed
12 * to the University of California by American Telephone and Telegraph
13 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
14 * the permission of UNIX System Laboratories, Inc.
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 * 3. Neither the name of the University nor the names of its contributors
25 * may be used to endorse or promote products derived from this software
26 * without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * @(#)ufs_vnops.c 8.27 (Berkeley) 5/27/95
41 * @(#)ext2_vnops.c 8.7 (Berkeley) 2/3/94
42 * $FreeBSD: src/sys/gnu/ext2fs/ext2_vnops.c,v 1.51.2.2 2003/01/02 17:26:18 bde Exp $
45 #include "opt_quota.h"
46 #include "opt_suiddir.h"
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/resourcevar.h>
51 #include <sys/kernel.h>
53 #include <sys/fcntl.h>
57 #include <sys/mount.h>
59 #include <sys/vnode.h>
60 #include <sys/dirent.h>
61 #include <sys/lockf.h>
62 #include <sys/event.h>
66 #include <sys/namei.h>
67 #include <sys/signalvar.h>
68 #include <sys/unistd.h>
71 #include <vm/vm_extern.h>
72 #include <vm/vm_zone.h>
73 #include <vm/vnode_pager.h>
77 #include <vfs/fifofs/fifo.h>
82 #include "ext2_mount.h"
83 #include "ext2_fs_sb.h"
85 #include "ext2_extern.h"
88 static int ext2_access (struct vop_access_args *);
89 static int ext2_advlock (struct vop_advlock_args *);
90 static int ext2_chmod (struct vnode *, int, struct ucred *);
91 static int ext2_chown (struct vnode *, uid_t, gid_t, struct ucred *);
92 static int ext2_close (struct vop_close_args *);
93 static int ext2_getattr (struct vop_getattr_args *);
94 static int ext2_makeinode (int mode, struct vnode *, struct vnode **, struct componentname *);
95 static int ext2_mmap (struct vop_mmap_args *);
96 static int ext2_open (struct vop_open_args *);
97 static int ext2_pathconf (struct vop_pathconf_args *);
98 static int ext2_print (struct vop_print_args *);
99 static int ext2_readlink (struct vop_readlink_args *);
100 static int ext2_setattr (struct vop_setattr_args *);
101 static int ext2_strategy (struct vop_strategy_args *);
102 static int ext2_whiteout (struct vop_old_whiteout_args *);
103 static int filt_ext2read (struct knote *kn, long hint);
104 static int filt_ext2write (struct knote *kn, long hint);
105 static int filt_ext2vnode (struct knote *kn, long hint);
106 static void filt_ext2detach (struct knote *kn);
107 static int ext2_kqfilter (struct vop_kqfilter_args *ap);
108 static int ext2fifo_close (struct vop_close_args *);
109 static int ext2fifo_kqfilter (struct vop_kqfilter_args *);
110 static int ext2fifo_read (struct vop_read_args *);
111 static int ext2fifo_write (struct vop_write_args *);
113 static int ext2_fsync (struct vop_fsync_args *);
114 static int ext2_read (struct vop_read_args *);
115 static int ext2_write (struct vop_write_args *);
116 static int ext2_remove (struct vop_old_remove_args *);
117 static int ext2_link (struct vop_old_link_args *);
118 static int ext2_rename (struct vop_old_rename_args *);
119 static int ext2_mkdir (struct vop_old_mkdir_args *);
120 static int ext2_rmdir (struct vop_old_rmdir_args *);
121 static int ext2_create (struct vop_old_create_args *);
122 static int ext2_mknod (struct vop_old_mknod_args *);
123 static int ext2_symlink (struct vop_old_symlink_args *);
125 #include "ext2_readwrite.c"
131 #define SETHIGH(q, h) { \
134 tmp.val[_QUAD_HIGHWORD] = (h); \
137 #define SETLOW(q, l) { \
140 tmp.val[_QUAD_LOWWORD] = (l); \
143 #define VN_KNOTE(vp, b) \
144 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, (b))
146 #define OFSFMT(vp) ((vp)->v_mount->mnt_maxsymlinklen <= 0)
149 * A virgin directory (no blushing please).
150 * Note that the type and namlen fields are reversed relative to ufs.
151 * Also, we don't use `struct odirtemplate', since it would just cause
152 * endianness problems.
154 static struct dirtemplate ext2_mastertemplate = {
155 0, 12, 1, EXT2_FT_DIR, ".",
156 0, DIRBLKSIZ - 12, 2, EXT2_FT_DIR, ".."
158 static struct dirtemplate ext2_omastertemplate = {
159 0, 12, 1, EXT2_FT_UNKNOWN, ".",
160 0, DIRBLKSIZ - 12, 2, EXT2_FT_UNKNOWN, ".."
164 * Create a regular file
166 * ext2_create(struct vnode *a_dvp, struct vnode **a_vpp,
167 * struct componentname *a_cnp, struct vattr *a_vap)
170 ext2_create(struct vop_old_create_args *ap)
175 ext2_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
176 ap->a_dvp, ap->a_vpp, ap->a_cnp);
183 * Synch an open file.
185 * ext2_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
190 static int ext2_fsync_bp(struct buf *bp, void *data);
192 struct ext2_fsync_bp_info {
198 ext2_fsync(struct vop_fsync_args *ap)
200 struct ext2_fsync_bp_info info;
201 struct vnode *vp = ap->a_vp;
205 * XXX why is all this fs specific?
209 * Flush all dirty buffers associated with a vnode.
211 ext2_discard_prealloc(VTOI(vp));
213 lwkt_gettoken(&vp->v_token);
216 info.waitfor = ap->a_waitfor;
217 count = RB_SCAN(buf_rb_tree, &vp->v_rbdirty_tree, NULL,
218 ext2_fsync_bp, &info);
222 if (ap->a_waitfor == MNT_WAIT) {
223 bio_track_wait(&vp->v_track_write, 0, 0);
225 if (!RB_EMPTY(&vp->v_rbdirty_tree)) {
226 vprint("ext2_fsync: dirty", vp);
231 lwkt_reltoken(&vp->v_token);
232 return (EXT2_UPDATE(ap->a_vp, ap->a_waitfor == MNT_WAIT));
236 ext2_fsync_bp(struct buf *bp, void *data)
238 struct ext2_fsync_bp_info *info = data;
240 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT))
242 if ((bp->b_flags & B_DELWRI) == 0)
243 panic("ext2_fsync: not dirty");
247 * Wait for I/O associated with indirect blocks to complete,
248 * since there is no way to quickly wait for them below.
250 if (bp->b_vp == info->vp || (info->waitfor & MNT_NOWAIT))
260 * ext2_mknod(struct vnode *a_dvp, struct vnode **a_vpp,
261 * struct componentname *a_cnp, struct vattr *a_vap)
265 ext2_mknod(struct vop_old_mknod_args *ap)
267 struct vattr *vap = ap->a_vap;
268 struct vnode **vpp = ap->a_vpp;
273 if (vap->va_rmajor != VNOVAL &&
274 makeudev(vap->va_rmajor, vap->va_rminor) == NOUDEV) {
278 error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
279 ap->a_dvp, vpp, ap->a_cnp);
283 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
284 if (vap->va_rmajor != VNOVAL) {
286 * Want to be able to use this to make badblock
287 * inodes, so don't truncate the dev number.
289 ip->i_rdev = makeudev(vap->va_rmajor, vap->va_rminor);
292 * Remove inode, then reload it through VFS_VGET so it is
293 * checked to see if it is an alias of an existing entry in
296 (*vpp)->v_type = VNON;
297 ino = ip->i_number; /* Save this before vgone() invalidates ip. */
298 vgone_vxlocked(*vpp);
300 error = VFS_VGET(ap->a_dvp->v_mount, NULL, ino, vpp);
309 * ext2_remove(struct vnode *a_dvp, struct vnode *a_vp,
310 * struct componentname *a_cnp)
313 ext2_remove(struct vop_old_remove_args *ap)
316 struct vnode *vp = ap->a_vp;
317 struct vnode *dvp = ap->a_dvp;
321 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
322 (VTOI(dvp)->i_flags & APPEND)) {
326 error = ext2_dirremove(dvp, ap->a_cnp);
329 ip->i_flag |= IN_CHANGE;
338 * ext2_link(struct vnode *a_tdvp, struct vnode *a_vp,
339 * struct componentname *a_cnp)
342 ext2_link(struct vop_old_link_args *ap)
344 struct vnode *vp = ap->a_vp;
345 struct vnode *tdvp = ap->a_tdvp;
346 struct componentname *cnp = ap->a_cnp;
350 if (tdvp->v_mount != vp->v_mount) {
355 error = vn_lock(vp, LK_EXCLUSIVE | LK_FAILRECLAIM);
360 if ((nlink_t)ip->i_nlink >= LINK_MAX) {
364 if (ip->i_flags & (IMMUTABLE | APPEND)) {
369 ip->i_flag |= IN_CHANGE;
370 error = EXT2_UPDATE(vp, 1);
372 error = ext2_direnter(ip, tdvp, cnp);
375 ip->i_flag |= IN_CHANGE;
385 * Rename system call. fdvp, fvp are ref'd. tvp, tdvp are ref'd and locked.
386 * all vp's are released and must be in an unlocked state on return.
388 * ext2_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
389 * struct componentname *a_fcnp, struct vnode *a_tdvp,
390 * struct vnode *a_tvp, struct componentname *a_tcnp)
393 ext2_rename(struct vop_old_rename_args *ap)
395 struct vnode *tvp = ap->a_tvp;
396 struct vnode *tdvp = ap->a_tdvp;
397 struct vnode *fvp = ap->a_fvp;
398 struct vnode *fdvp = ap->a_fdvp;
399 struct componentname *tcnp = ap->a_tcnp;
400 struct componentname *fcnp = ap->a_fcnp;
401 struct inode *ip, *xp, *dp;
402 struct dirtemplate dirbuf;
403 int doingdirectory = 0, oldparent = 0, newparent = 0;
408 * Check for cross-device rename.
410 if ((fvp->v_mount != tdvp->v_mount) ||
411 (tvp && (fvp->v_mount != tvp->v_mount)) ||
426 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
427 (VTOI(tdvp)->i_flags & APPEND))) {
433 * Renaming a file to itself has no effect. The upper layers should
434 * not call us in that case. Temporarily just warn if they do.
441 error = vn_lock(fvp, LK_EXCLUSIVE | LK_FAILRECLAIM);
446 * fvp, tvp, tdvp locked. fdvp not locked but note that fdvp may
451 if (ip->i_nlink >= LINK_MAX) {
456 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
457 || (dp->i_flags & APPEND)) {
462 if ((ip->i_mode & IFMT) == IFDIR) {
464 * Avoid ".", "..", and aliases of "." for obvious reasons.
466 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
467 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & CNP_ISDOTDOT ||
468 (ip->i_flag & IN_RENAME)) {
473 ip->i_flag |= IN_RENAME;
474 oldparent = dp->i_number;
479 * tvp is non-NULL if the target exists. fvp is still locked but
480 * we will unlock it soon. The 'bad' goto target requires dp and
481 * xp to be correctly assigned.
490 * 1) Bump link count while we're moving stuff
491 * around. If we crash somewhere before
492 * completing our work, the link count
493 * may be wrong, but correctable.
496 ip->i_flag |= IN_CHANGE;
497 if ((error = EXT2_UPDATE(fvp, 1)) != 0) {
503 * If ".." must be changed (ie the directory gets a new
504 * parent) then the source directory must not be in the
505 * directory heirarchy above the target, as this would
506 * orphan everything below the source directory. Also
507 * the user must have write permission in the source so
508 * as to be able to change "..". We must repeat the call
509 * to namei, as the parent directory is unlocked by the
510 * call to checkpath().
512 error = VOP_EACCESS(fvp, VWRITE, tcnp->cn_cred);
516 * tvp (if not NULL) and tdvp are locked. fvp and fdvp are not.
517 * dp and xp are set according to tdvp and tvp.
519 if (oldparent != dp->i_number)
520 newparent = dp->i_number;
521 if (doingdirectory && newparent) {
522 if (error) /* write access check above */
526 * Prepare for relookup, get rid of xp
534 * checkpath vput()'s tdvp (VTOI(dp)) on return no matter what,
535 * get an extra ref so we wind up with just an unlocked, ref'd
536 * tdvp. The 'out' target skips xp and tdvp cleanups. Our
537 * tdvp is now unlocked so we have to clean it up ourselves.
540 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
541 tcnp->cn_flags |= CNP_PDIRUNLOCK;
547 * relookup no longer messes with the ref count. An unlocked
548 * tdvp must be passed and if no error occurs a locked tdvp
549 * will be returned. We have to use the out target again.
551 error = relookup(tdvp, &tvp, tcnp);
553 if (tcnp->cn_flags & CNP_PDIRUNLOCK)
561 * tdvp is locked at this point. in the RENAME case tvp may
562 * be NULL without an error, assign xp accordingly. The
563 * 'bad' target can be used again after this.
570 * 2) If target doesn't exist, link the target
571 * to the source and unlink the source.
572 * Otherwise, rewrite the target directory
573 * entry to reference the source inode and
574 * expunge the original entry's existence.
576 * tdvp and tvp are cleaned up by this code. tvp is only good if
580 if (dp->i_dev != ip->i_dev)
581 panic("ext2_rename: EXDEV");
583 * Account for ".." in new directory.
584 * When source and destination have the same
585 * parent we don't fool with the link count.
587 if (doingdirectory && newparent) {
588 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
593 dp->i_flag |= IN_CHANGE;
594 error = EXT2_UPDATE(tdvp, 1);
598 error = ext2_direnter(ip, tdvp, tcnp);
600 if (doingdirectory && newparent) {
602 dp->i_flag |= IN_CHANGE;
603 EXT2_UPDATE(tdvp, 1);
609 * manual cleanup, we can't use the bad or out target after
614 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
615 panic("ext2_rename: EXDEV");
617 * Short circuit rename(foo, foo).
619 if (xp->i_number == ip->i_number)
620 panic("ext2_rename: same file");
622 * If the parent directory is "sticky", then the user must
623 * own the parent directory, or the destination of the rename,
624 * otherwise the destination may not be changed (except by
625 * root). This implements append-only directories.
627 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
628 tcnp->cn_cred->cr_uid != dp->i_uid &&
629 xp->i_uid != tcnp->cn_cred->cr_uid) {
634 * Target must be empty if a directory and have no links
635 * to it. Also, ensure source and target are compatible
636 * (both directories, or both not directories).
638 if ((xp->i_mode&IFMT) == IFDIR) {
639 if (! ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
644 if (!doingdirectory) {
648 } else if (doingdirectory) {
652 error = ext2_dirrewrite(dp, ip, tcnp);
656 * If the target directory is in the same
657 * directory as the source directory,
658 * decrement the link count on the parent
659 * of the target directory.
661 if (doingdirectory && !newparent) {
663 dp->i_flag |= IN_CHANGE;
667 * manual cleanup, we can't use the bad or out target after
673 * Adjust the link count of the target to
674 * reflect the dirrewrite above. If this is
675 * a directory it is empty and there are
676 * no links to it, so we can squash the inode and
677 * any space associated with it. We disallowed
678 * renaming over top of a directory with links to
679 * it above, as the remaining link would point to
680 * a directory without "." or ".." entries.
683 if (doingdirectory) {
684 if (--xp->i_nlink != 0)
685 panic("ext2_rename: linked directory");
686 error = EXT2_TRUNCATE(tvp, (off_t)0, IO_SYNC,
689 xp->i_flag |= IN_CHANGE;
695 * tvp and tdvp have been cleaned up. The bad and out targets may
696 * not be used. fvp and fdvp are ref'd but not locked. ip
697 * still represents the old fvp and ip->i_flag may still have IN_RENAME
698 * set (if doingdirectory).
702 * 3) Unlink the source.
704 * fdvp is locked and ref'd. ap->a_fvp holds the old lookup unlocked
705 * and ref'd, fvp will hold the new lookup locked and ref'd.
707 * After the relookup ap->a_fvp must be released as part of our
708 * cleanup, not just fdvp and fvp. And, on success, fdvp and
709 * fvp will be locked so the bad and out targets cannot be used.
711 fcnp->cn_flags &= ~CNP_MODMASK;
712 fcnp->cn_flags |= CNP_LOCKPARENT;
713 KKASSERT(fcnp->cn_flags & CNP_PDIRUNLOCK);
714 error = relookup(fdvp, &fvp, fcnp);
717 * From name has disappeared.
720 panic("ext2_rename: lost dir entry");
721 /* ip->i_flag only sets IN_RENAME if doingdirectory */
723 if (fcnp->cn_flags & CNP_PDIRUNLOCK)
729 KKASSERT((fcnp->cn_flags & CNP_PDIRUNLOCK) == 0);
732 * This case shouldn't occur
736 * From name has disappeared.
739 panic("ext2_rename: lost dir entry");
740 /* ip->i_flag only sets IN_RENAME if doingdirectory */
748 * fvp and fdvp are both ref'd and locked.
754 * Ensure that the directory entry still exists and has not
755 * changed while the new name has been entered. If the source is
756 * a file then the entry may have been unlinked or renamed. In
757 * either case there is no further work to be done. If the source
758 * is a directory then it cannot have been rmdir'ed; its link
759 * count of three would cause a rmdir to fail with ENOTEMPTY.
760 * The IN_RENAME flag ensures that it cannot be moved by another
765 panic("ext2_rename: lost dir entry");
766 /* ip->i_flag only sets IN_RENAME if doingdirectory */
769 * If the source is a directory with a
770 * new parent, the link count of the old
771 * parent directory must be decremented
772 * and ".." set to point to the new parent.
774 if (doingdirectory && newparent) {
776 dp->i_flag |= IN_CHANGE;
777 error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
778 sizeof (struct dirtemplate), (off_t)0,
779 UIO_SYSSPACE, IO_NODELOCKED,
780 tcnp->cn_cred, NULL);
782 /* Like ext2 little-endian: */
783 namlen = dirbuf.dotdot_type;
785 dirbuf.dotdot_name[0] != '.' ||
786 dirbuf.dotdot_name[1] != '.') {
787 ext2_dirbad(xp, (doff_t)12,
788 "rename: mangled dir");
790 dirbuf.dotdot_ino = newparent;
791 vn_rdwr(UIO_WRITE, fvp,
793 sizeof (struct dirtemplate),
794 (off_t)0, UIO_SYSSPACE,
795 IO_NODELOCKED|IO_SYNC,
796 tcnp->cn_cred, NULL);
800 error = ext2_dirremove(fdvp, fcnp);
803 xp->i_flag |= IN_CHANGE;
805 xp->i_flag &= ~IN_RENAME;
819 ip->i_flag &= ~IN_RENAME;
821 error = vn_lock(fvp, LK_EXCLUSIVE);
824 ip->i_flag |= IN_CHANGE;
825 ip->i_flag &= ~IN_RENAME;
836 * ext2_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
837 * struct componentname *a_cnp, struct vattr *a_vap)
840 ext2_mkdir(struct vop_old_mkdir_args *ap)
842 struct vnode *dvp = ap->a_dvp;
843 struct vattr *vap = ap->a_vap;
844 struct componentname *cnp = ap->a_cnp;
845 struct inode *ip, *dp;
847 struct dirtemplate dirtemplate, *dtp;
851 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
855 dmode = vap->va_mode & 0777;
858 * Must simulate part of ext2_makeinode here to acquire the inode,
859 * but not have it entered in the parent directory. The entry is
860 * made later after writing "." and ".." entries.
862 error = EXT2_VALLOC(dvp, dmode, cnp->cn_cred, &tvp);
866 ip->i_gid = dp->i_gid;
870 struct ucred ucred, *ucp;
874 * if we are hacking owners here, (only do this where told to)
875 * and we are not giving it TOO root, (would subvert quotas)
876 * then go ahead and give it to the other user.
877 * The new directory also inherits the SUID bit.
878 * If user's UID and dir UID are the same,
879 * 'give it away' so that the SUID is still forced on.
881 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
882 (dp->i_mode & ISUID) && dp->i_uid) {
884 ip->i_uid = dp->i_uid;
886 if (dp->i_uid != cnp->cn_cred->cr_uid) {
888 * make sure the correct user gets charged
890 * Make a dummy credential for the victim.
891 * XXX This seems to never be accessed out of
892 * our context so a stack variable is ok.
895 ucred.cr_uid = ip->i_uid;
896 ucred.cr_ngroups = 1;
897 ucred.cr_groups[0] = dp->i_gid;
902 ip->i_uid = cnp->cn_cred->cr_uid;
905 if ((error = ext2_getinoquota(ip)) ||
906 (error = ext2_chkiq(ip, 1, ucp, 0))) {
907 EXT2_VFREE(tvp, ip->i_number, dmode);
914 ip->i_uid = cnp->cn_cred->cr_uid;
916 if ((error = ext2_getinoquota(ip)) ||
917 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
918 EXT2_VFREE(tvp, ip->i_number, dmode);
924 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
926 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
928 if (cnp->cn_flags & CNP_ISWHITEOUT)
929 ip->i_flags |= UF_OPAQUE;
930 error = EXT2_UPDATE(tvp, 1);
933 * The vnode must have a VM object in order to issue buffer cache
936 vinitvmio(tvp, 0, PAGE_SIZE, -1);
939 * Bump link count in parent directory
940 * to reflect work done below. Should
941 * be done before reference is created
942 * so reparation is possible if we crash.
945 dp->i_flag |= IN_CHANGE;
946 error = EXT2_UPDATE(dvp, 1);
950 /* Initialize directory with "." and ".." from static template. */
951 if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs->s_es,
952 EXT2_FEATURE_INCOMPAT_FILETYPE))
953 dtp = &ext2_mastertemplate;
955 dtp = &ext2_omastertemplate;
957 dirtemplate.dot_ino = ip->i_number;
958 dirtemplate.dotdot_ino = dp->i_number;
959 /* note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE
960 * so let's just redefine it - for this function only
963 #define DIRBLKSIZ VTOI(dvp)->i_e2fs->s_blocksize
964 dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
965 error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
966 sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
967 IO_NODELOCKED|IO_SYNC, cnp->cn_cred, NULL);
970 dp->i_flag |= IN_CHANGE;
973 if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
974 panic("ext2_mkdir: blksize"); /* XXX should grow with balloc() */
976 ip->i_size = DIRBLKSIZ;
977 ip->i_flag |= IN_CHANGE;
980 /* Directory set up, now install its entry in the parent directory. */
981 error = ext2_direnter(ip, dvp, cnp);
984 dp->i_flag |= IN_CHANGE;
988 * No need to do an explicit VOP_TRUNCATE here, vrele will do this
989 * for us because we set the link count to 0.
993 ip->i_flag |= IN_CHANGE;
1000 #define DIRBLKSIZ DEV_BSIZE
1004 * Rmdir system call.
1006 * ext2_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
1007 * struct componentname *a_cnp)
1010 ext2_rmdir(struct vop_old_rmdir_args *ap)
1012 struct vnode *vp = ap->a_vp;
1013 struct vnode *dvp = ap->a_dvp;
1014 struct componentname *cnp = ap->a_cnp;
1015 struct inode *ip, *dp;
1022 * Verify the directory is empty (and valid).
1023 * (Rmdir ".." won't be valid since
1024 * ".." will contain a reference to
1025 * the current directory and thus be
1029 if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
1033 if ((dp->i_flags & APPEND)
1034 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1039 * Delete reference to directory before purging
1040 * inode. If we crash in between, the directory
1041 * will be reattached to lost+found,
1043 error = ext2_dirremove(dvp, cnp);
1047 dp->i_flag |= IN_CHANGE;
1050 * Truncate inode. The only stuff left
1051 * in the directory is "." and "..". The
1052 * "." reference is inconsequential since
1053 * we're quashing it. The ".." reference
1054 * has already been adjusted above. We've
1055 * removed the "." reference and the reference
1056 * in the parent directory, but there may be
1057 * other hard links so decrement by 2 and
1058 * worry about them later.
1061 error = EXT2_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
1062 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1068 * symlink -- make a symbolic link
1070 * ext2_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
1071 * struct componentname *a_cnp, struct vattr *a_vap,
1075 ext2_symlink(struct vop_old_symlink_args *ap)
1077 struct vnode *vp, **vpp = ap->a_vpp;
1081 error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
1086 len = strlen(ap->a_target);
1087 if (len < vp->v_mount->mnt_maxsymlinklen) {
1089 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
1091 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1094 * Make sure we have a VM object in order to use
1097 if (vp->v_object == NULL)
1098 vinitvmio(vp, 0, PAGE_SIZE, -1);
1100 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
1101 UIO_SYSSPACE, IO_NODELOCKED,
1102 ap->a_cnp->cn_cred, NULL);
1112 * Allocate a new inode.
1115 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
1116 struct componentname *cnp)
1118 struct inode *ip, *pdir;
1124 if ((mode & IFMT) == 0)
1127 error = EXT2_VALLOC(dvp, mode, cnp->cn_cred, &tvp);
1132 ip->i_gid = pdir->i_gid;
1136 struct ucred ucred, *ucp;
1141 * not the owner of the directory,
1142 * and we are hacking owners here, (only do this where told to)
1143 * and we are not giving it TOO root, (would subvert quotas)
1144 * then go ahead and give it to the other user.
1145 * Note that this drops off the execute bits for security.
1147 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
1148 (pdir->i_mode & ISUID) &&
1149 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
1150 ip->i_uid = pdir->i_uid;
1154 * make sure the correct user gets charged
1156 * Quickly knock up a dummy credential for the victim.
1157 * XXX This seems to never be accessed out of our
1158 * context so a stack variable is ok.
1161 ucred.cr_uid = ip->i_uid;
1162 ucred.cr_ngroups = 1;
1163 ucred.cr_groups[0] = pdir->i_gid;
1167 ip->i_uid = cnp->cn_cred->cr_uid;
1171 if ((error = ext2_getinoquota(ip)) ||
1172 (error = ext2_chkiq(ip, 1, ucp, 0))) {
1173 EXT2_VFREE(tvp, ip->i_number, mode);
1180 ip->i_uid = cnp->cn_cred->cr_uid;
1182 if ((error = ext2_getinoquota(ip)) ||
1183 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
1184 EXT2_VFREE(tvp, ip->i_number, mode);
1190 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
1192 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
1194 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
1195 priv_check_cred(cnp->cn_cred, PRIV_VFS_SETGID, 0))
1196 ip->i_mode &= ~ISGID;
1198 if (cnp->cn_flags & CNP_ISWHITEOUT)
1199 ip->i_flags |= UF_OPAQUE;
1202 * Regular files and directories need VM objects. Softlinks do
1203 * not (not immediately anyway).
1205 if (tvp->v_type == VREG || tvp->v_type == VDIR)
1206 vinitvmio(tvp, 0, PAGE_SIZE, -1);
1209 * Make sure inode goes to disk before directory entry.
1211 error = EXT2_UPDATE(tvp, 1);
1214 error = ext2_direnter(ip, dvp, cnp);
1223 * Write error occurred trying to update the inode
1224 * or the directory so must deallocate the inode.
1227 ip->i_flag |= IN_CHANGE;
1233 ext2_itimes(struct vnode *vp)
1239 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
1241 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp))
1242 ip->i_flag |= IN_LAZYMOD;
1244 ip->i_flag |= IN_MODIFIED;
1245 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
1247 if (ip->i_flag & IN_ACCESS) {
1248 ip->i_atime = ts.tv_sec;
1249 ip->i_atimensec = ts.tv_nsec;
1251 if (ip->i_flag & IN_UPDATE) {
1252 ip->i_mtime = ts.tv_sec;
1253 ip->i_mtimensec = ts.tv_nsec;
1256 if (ip->i_flag & IN_CHANGE) {
1257 ip->i_ctime = ts.tv_sec;
1258 ip->i_ctimensec = ts.tv_nsec;
1261 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
1269 * ext2_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
1270 * struct file *a_fp)
1275 ext2_open(struct vop_open_args *ap)
1277 struct vnode *vp = ap->a_vp;
1280 * Files marked append-only must be opened for appending.
1282 if ((VTOI(vp)->i_flags & APPEND) &&
1283 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) {
1286 return (vop_stdopen(ap));
1292 * Update the times on the inode.
1294 * ext2_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1299 ext2_close(struct vop_close_args *ap)
1301 struct vnode *vp = ap->a_vp;
1303 if (VREFCNT(vp) > 1)
1305 return (vop_stdclose(ap));
1309 * ext2_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
1313 ext2_access(struct vop_access_args *ap)
1315 struct vnode *vp = ap->a_vp;
1316 struct inode *ip = VTOI(vp);
1320 if (ap->a_mode & VWRITE) {
1321 switch (vp->v_type) {
1325 if ((error = ext2_getinoquota(ip)) != 0)
1334 error = vop_helper_access(ap, ip->i_uid, ip->i_gid, ip->i_mode,
1340 * ext2_getattr(struct vnode *a_vp, struct vattr *a_vap)
1345 ext2_getattr(struct vop_getattr_args *ap)
1347 struct vnode *vp = ap->a_vp;
1348 struct inode *ip = VTOI(vp);
1349 struct vattr *vap = ap->a_vap;
1353 * Copy from inode table
1355 vap->va_fsid = dev2udev(ip->i_dev);
1356 vap->va_fileid = ip->i_number;
1357 vap->va_mode = ip->i_mode & ~IFMT;
1358 vap->va_nlink = VFSTOEXT2(vp->v_mount)->um_i_effnlink_valid ?
1359 ip->i_effnlink : ip->i_nlink;
1360 vap->va_uid = ip->i_uid;
1361 vap->va_gid = ip->i_gid;
1362 vap->va_rmajor = umajor(ip->i_rdev);
1363 vap->va_rminor = uminor(ip->i_rdev);
1364 vap->va_size = ip->i_din.di_size;
1365 vap->va_atime.tv_sec = ip->i_atime;
1366 vap->va_atime.tv_nsec = ip->i_atimensec;
1367 vap->va_mtime.tv_sec = ip->i_mtime;
1368 vap->va_mtime.tv_nsec = ip->i_mtimensec;
1369 vap->va_ctime.tv_sec = ip->i_ctime;
1370 vap->va_ctime.tv_nsec = ip->i_ctimensec;
1371 vap->va_flags = ip->i_flags;
1372 vap->va_gen = ip->i_gen;
1373 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
1374 vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
1375 vap->va_type = IFTOVT(ip->i_mode);
1376 vap->va_filerev = ip->i_modrev;
1381 * Set attribute vnode op. called from several syscalls
1383 * ext2_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
1387 ext2_setattr(struct vop_setattr_args *ap)
1389 struct vattr *vap = ap->a_vap;
1390 struct vnode *vp = ap->a_vp;
1391 struct inode *ip = VTOI(vp);
1392 struct ucred *cred = ap->a_cred;
1396 * Check for unsettable attributes.
1398 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
1399 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
1400 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
1401 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
1404 if (vap->va_flags != VNOVAL) {
1405 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1407 if (cred->cr_uid != ip->i_uid &&
1408 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)))
1411 * Note that a root chflags becomes a user chflags when
1412 * we are jailed, unless the jail.chflags_allowed sysctl
1415 if (cred->cr_uid == 0 &&
1416 (!jailed(cred) || jail_chflags_allowed)) {
1418 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) &&
1421 ip->i_flags = vap->va_flags;
1424 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
1425 (vap->va_flags & UF_SETTABLE) != vap->va_flags)
1427 ip->i_flags &= SF_SETTABLE;
1428 ip->i_flags |= (vap->va_flags & UF_SETTABLE);
1430 ip->i_flag |= IN_CHANGE;
1431 if (vap->va_flags & (IMMUTABLE | APPEND))
1434 if (ip->i_flags & (IMMUTABLE | APPEND))
1437 * Go through the fields and update iff not VNOVAL.
1439 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
1440 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1442 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred)) != 0)
1445 if (vap->va_size != VNOVAL) {
1447 * Disallow write attempts on read-only filesystems;
1448 * unless the file is a socket, fifo, or a block or
1449 * character device resident on the filesystem.
1451 switch (vp->v_type) {
1456 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1462 if ((error = EXT2_TRUNCATE(vp, vap->va_size, 0, cred)) != 0)
1466 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
1467 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1469 if (cred->cr_uid != ip->i_uid &&
1470 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) &&
1471 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1472 (error = VOP_EACCESS(vp, VWRITE, cred))))
1474 if (vap->va_atime.tv_sec != VNOVAL)
1475 ip->i_flag |= IN_ACCESS;
1476 if (vap->va_mtime.tv_sec != VNOVAL)
1477 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1479 if (vap->va_atime.tv_sec != VNOVAL) {
1480 ip->i_atime = vap->va_atime.tv_sec;
1481 ip->i_atimensec = vap->va_atime.tv_nsec;
1483 if (vap->va_mtime.tv_sec != VNOVAL) {
1484 ip->i_mtime = vap->va_mtime.tv_sec;
1485 ip->i_mtimensec = vap->va_mtime.tv_nsec;
1487 error = EXT2_UPDATE(vp, 0);
1492 if (vap->va_mode != (mode_t)VNOVAL) {
1493 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1495 error = ext2_chmod(vp, (int)vap->va_mode, cred);
1497 VN_KNOTE(vp, NOTE_ATTRIB);
1502 * Change the mode on a file.
1503 * Inode must be locked before calling.
1506 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred)
1508 struct inode *ip = VTOI(vp);
1511 if (cred->cr_uid != ip->i_uid) {
1512 error = priv_check_cred(cred, PRIV_VFS_CHMOD, 0);
1517 if (vp->v_type != VDIR && (mode & S_ISTXT))
1519 if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
1522 ip->i_mode &= ~ALLPERMS;
1523 ip->i_mode |= (mode & ALLPERMS);
1524 ip->i_flag |= IN_CHANGE;
1529 * Perform chown operation on inode ip;
1530 * inode must be locked prior to call.
1533 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred)
1535 struct inode *ip = VTOI(vp);
1544 if (uid == (uid_t)VNOVAL)
1546 if (gid == (gid_t)VNOVAL)
1549 * If we don't own the file, are trying to change the owner
1550 * of the file, or are not a member of the target group,
1551 * the caller must be superuser or the call fails.
1553 if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
1554 (gid != ip->i_gid && !(cred->cr_gid == gid ||
1555 groupmember(gid, cred)))) &&
1556 (error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0)))
1561 if ((error = ext2_getinoquota(ip)) != 0)
1564 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1565 ip->i_dquot[USRQUOTA] = NODQUOT;
1568 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1569 ip->i_dquot[GRPQUOTA] = NODQUOT;
1571 change = ip->i_blocks;
1572 (void) ext2_chkdq(ip, -change, cred, CHOWN);
1573 (void) ext2_chkiq(ip, -1, cred, CHOWN);
1574 for (i = 0; i < MAXQUOTAS; i++) {
1575 ext2_dqrele(vp, ip->i_dquot[i]);
1576 ip->i_dquot[i] = NODQUOT;
1582 if ((error = ext2_getinoquota(ip)) == 0) {
1584 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1585 ip->i_dquot[USRQUOTA] = NODQUOT;
1588 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1589 ip->i_dquot[GRPQUOTA] = NODQUOT;
1591 if ((error = ext2_chkdq(ip, change, cred, CHOWN)) == 0) {
1592 if ((error = ext2_chkiq(ip, 1, cred, CHOWN)) == 0)
1595 (void)ext2_chkdq(ip, -change, cred, CHOWN|FORCE);
1597 for (i = 0; i < MAXQUOTAS; i++) {
1598 ext2_dqrele(vp, ip->i_dquot[i]);
1599 ip->i_dquot[i] = NODQUOT;
1604 if (ext2_getinoquota(ip) == 0) {
1606 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1607 ip->i_dquot[USRQUOTA] = NODQUOT;
1610 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1611 ip->i_dquot[GRPQUOTA] = NODQUOT;
1613 (void) ext2_chkdq(ip, change, cred, FORCE|CHOWN);
1614 (void) ext2_chkiq(ip, 1, cred, FORCE|CHOWN);
1615 (void) ext2_getinoquota(ip);
1619 if (ext2_getinoquota(ip))
1620 panic("ext2_chown: lost quota");
1622 ip->i_flag |= IN_CHANGE;
1623 if (cred->cr_uid != 0 && (ouid != uid || ogid != gid))
1624 ip->i_mode &= ~(ISUID | ISGID);
1631 * NB Currently unsupported.
1633 * ext2_mmap(struct vnode *a_vp, int a_fflags, struct ucred *a_cred)
1638 ext2_mmap(struct vop_mmap_args *ap)
1644 * whiteout vnode call
1646 * ext2_whiteout(struct vnode *a_dvp, struct componentname *a_cnp, int a_flags)
1650 ext2_whiteout(struct vop_old_whiteout_args *ap)
1652 return (EOPNOTSUPP);
1656 * Return target name of a symbolic link
1658 * ext2_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred)
1662 ext2_readlink(struct vop_readlink_args *ap)
1664 struct vnode *vp = ap->a_vp;
1665 struct inode *ip = VTOI(vp);
1669 if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
1670 (ip->i_din.di_blocks == 0)) { /* XXX - for old fastlink support */
1671 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
1674 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
1678 * Calculate the logical to physical mapping if not done already,
1679 * then call the device strategy routine.
1681 * In order to be able to swap to a file, the VOP_BMAP operation may not
1682 * deadlock on memory. See ext2_bmap() for details.
1684 * ext2_strategy(struct vnode *a_vp, struct bio *a_bio)
1688 ext2_strategy(struct vop_strategy_args *ap)
1690 struct bio *bio = ap->a_bio;
1692 struct buf *bp = bio->bio_buf;
1693 struct vnode *vp = ap->a_vp;
1698 if (vp->v_type == VBLK || vp->v_type == VCHR)
1699 panic("ext2_strategy: spec");
1700 nbio = push_bio(bio);
1701 if (nbio->bio_offset == NOOFFSET) {
1702 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
1703 NULL, NULL, bp->b_cmd);
1705 bp->b_error = error;
1706 bp->b_flags |= B_ERROR;
1707 /* I/O was never started on nbio, must biodone(bio) */
1711 if (nbio->bio_offset == NOOFFSET)
1714 if (nbio->bio_offset == NOOFFSET) {
1715 /* I/O was never started on nbio, must biodone(bio) */
1719 vn_strategy(ip->i_devvp, nbio);
1724 * Print out the contents of an inode.
1726 * ext2_print(struct vnode *a_vp)
1730 ext2_print(struct vop_print_args *ap)
1732 struct vnode *vp = ap->a_vp;
1733 struct inode *ip = VTOI(vp);
1735 kprintf("tag VT_EXT2FS, ino %lu, on dev %s (%d, %d)",
1736 (u_long)ip->i_number, devtoname(ip->i_dev), major(ip->i_dev),
1738 if (vp->v_type == VFIFO)
1740 lockmgr_printinfo(&vp->v_lock);
1746 * Read wrapper for fifos.
1748 * ext2fifo_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1749 * struct ucred *a_cred)
1753 ext2fifo_read(struct vop_read_args *ap)
1760 resid = uio->uio_resid;
1761 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1762 ip = VTOI(ap->a_vp);
1763 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL &&
1764 (uio->uio_resid != resid || (error == 0 && resid != 0)))
1765 VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
1770 * Write wrapper for fifos.
1772 * ext2fifo_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1773 * struct ucred *a_cred)
1777 ext2fifo_write(struct vop_write_args *ap)
1784 resid = uio->uio_resid;
1785 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1786 ip = VTOI(ap->a_vp);
1787 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1788 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1793 * Close wrapper for fifos.
1795 * Update the times on the inode then do device close.
1797 * ext2fifo_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1801 ext2fifo_close(struct vop_close_args *ap)
1803 struct vnode *vp = ap->a_vp;
1805 if (VREFCNT(vp) > 1)
1807 return (VOCALL(&fifo_vnode_vops, &ap->a_head));
1811 * Kqfilter wrapper for fifos.
1813 * Fall through to ext2 kqfilter routines if needed
1817 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
1821 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1823 error = ext2_kqfilter(ap);
1828 * Return POSIX pathconf information applicable to ext2 filesystems.
1830 * ext2_pathconf(struct vnode *a_vp, int a_name, int *a_retval)
1834 ext2_pathconf(struct vop_pathconf_args *ap)
1836 switch (ap->a_name) {
1838 *ap->a_retval = LINK_MAX;
1841 *ap->a_retval = NAME_MAX;
1844 *ap->a_retval = PATH_MAX;
1847 *ap->a_retval = PIPE_BUF;
1849 case _PC_CHOWN_RESTRICTED:
1862 * Advisory record locking support
1864 * ext2_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, struct flock *a_fl,
1869 ext2_advlock(struct vop_advlock_args *ap)
1871 struct inode *ip = VTOI(ap->a_vp);
1873 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size));
1877 * Initialize the vnode associated with a new inode, handle aliased
1881 ext2_vinit(struct mount *mntp, struct vnode **vpp)
1890 switch(vp->v_type = IFTOVT(ip->i_mode)) {
1893 vp->v_ops = &mntp->mnt_vn_spec_ops;
1894 addaliasu(vp, umajor(ip->i_rdev), uminor(ip->i_rdev));
1897 vp->v_ops = &mntp->mnt_vn_fifo_ops;
1901 vinitvmio(vp, ip->i_size, PAGE_SIZE, -1); /* XXX */
1904 if ((ip->i_size >= vp->v_mount->mnt_maxsymlinklen) &&
1905 ip->i_din.di_blocks != 0
1907 vinitvmio(vp, ip->i_size, PAGE_SIZE, -1);
1915 if (ip->i_number == EXT2_ROOTINO)
1916 vp->v_flag |= VROOT;
1918 * Initialize modrev times
1920 getmicrouptime(&tv);
1921 SETHIGH(ip->i_modrev, tv.tv_sec);
1922 SETLOW(ip->i_modrev, tv.tv_usec * 4294);
1927 static struct filterops ext2read_filtops =
1928 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2read };
1929 static struct filterops ext2write_filtops =
1930 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2write };
1931 static struct filterops ext2vnode_filtops =
1932 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2vnode };
1935 * ext2_kqfilter(struct vnode *a_vp, struct knote *a_kn)
1938 ext2_kqfilter(struct vop_kqfilter_args *ap)
1940 struct vnode *vp = ap->a_vp;
1941 struct knote *kn = ap->a_kn;
1943 switch (kn->kn_filter) {
1945 kn->kn_fop = &ext2read_filtops;
1948 kn->kn_fop = &ext2write_filtops;
1951 kn->kn_fop = &ext2vnode_filtops;
1954 return (EOPNOTSUPP);
1957 kn->kn_hook = (caddr_t)vp;
1959 /* XXX: kq token actually protects the list */
1960 lwkt_gettoken(&vp->v_token);
1961 knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1962 lwkt_reltoken(&vp->v_token);
1968 filt_ext2detach(struct knote *kn)
1970 struct vnode *vp = (struct vnode *)kn->kn_hook;
1972 lwkt_gettoken(&vp->v_token);
1973 knote_remove(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1974 lwkt_reltoken(&vp->v_token);
1979 filt_ext2read(struct knote *kn, long hint)
1981 struct vnode *vp = (struct vnode *)kn->kn_hook;
1982 struct inode *ip = VTOI(vp);
1986 * filesystem is gone, so set the EOF flag and schedule
1987 * the knote for deletion.
1989 if (hint == NOTE_REVOKE) {
1990 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
1993 off = ip->i_size - kn->kn_fp->f_offset;
1994 kn->kn_data = (off < INTPTR_MAX) ? off : INTPTR_MAX;
1995 if (kn->kn_sfflags & NOTE_OLDAPI)
1997 return (kn->kn_data != 0);
2002 filt_ext2write(struct knote *kn, long hint)
2005 * filesystem is gone, so set the EOF flag and schedule
2006 * the knote for deletion.
2008 if (hint == NOTE_REVOKE)
2009 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
2016 filt_ext2vnode(struct knote *kn, long hint)
2018 if (kn->kn_sfflags & hint)
2019 kn->kn_fflags |= hint;
2020 if (hint == NOTE_REVOKE) {
2021 kn->kn_flags |= (EV_EOF | EV_NODATA);
2024 return (kn->kn_fflags != 0);
2027 struct vop_ops ext2_vnode_vops = {
2028 .vop_default = vop_defaultop,
2029 .vop_fsync = ext2_fsync,
2030 .vop_read = ext2_read,
2031 .vop_reallocblks = ext2_reallocblks,
2032 .vop_write = ext2_write,
2033 .vop_access = ext2_access,
2034 .vop_advlock = ext2_advlock,
2035 .vop_bmap = ext2_bmap,
2036 .vop_old_lookup = ext2_lookup,
2037 .vop_close = ext2_close,
2038 .vop_old_create = ext2_create,
2039 .vop_getattr = ext2_getattr,
2040 .vop_inactive = ext2_inactive,
2041 .vop_old_link = ext2_link,
2042 .vop_old_mkdir = ext2_mkdir,
2043 .vop_old_mknod = ext2_mknod,
2044 .vop_mmap = ext2_mmap,
2045 .vop_open = ext2_open,
2046 .vop_pathconf = ext2_pathconf,
2047 .vop_kqfilter = ext2_kqfilter,
2048 .vop_print = ext2_print,
2049 .vop_readdir = ext2_readdir,
2050 .vop_readlink = ext2_readlink,
2051 .vop_reclaim = ext2_reclaim,
2052 .vop_old_remove = ext2_remove,
2053 .vop_old_rename = ext2_rename,
2054 .vop_old_rmdir = ext2_rmdir,
2055 .vop_setattr = ext2_setattr,
2056 .vop_strategy = ext2_strategy,
2057 .vop_old_symlink = ext2_symlink,
2058 .vop_old_whiteout = ext2_whiteout,
2059 .vop_getpages = vop_stdgetpages,
2060 .vop_putpages = vop_stdputpages
2063 struct vop_ops ext2_spec_vops = {
2064 .vop_default = vop_defaultop,
2065 .vop_fsync = ext2_fsync,
2066 .vop_access = ext2_access,
2067 .vop_close = ext2_close,
2068 .vop_getattr = ext2_getattr,
2069 .vop_inactive = ext2_inactive,
2070 .vop_print = ext2_print,
2071 .vop_read = vop_stdnoread,
2072 .vop_reclaim = ext2_reclaim,
2073 .vop_setattr = ext2_setattr,
2074 .vop_write = vop_stdnowrite
2077 struct vop_ops ext2_fifo_vops = {
2078 .vop_default = ext2_vnoperatefifo,
2079 .vop_fsync = ext2_fsync,
2080 .vop_access = ext2_access,
2081 .vop_close = ext2fifo_close,
2082 .vop_getattr = ext2_getattr,
2083 .vop_inactive = ext2_inactive,
2084 .vop_kqfilter = ext2fifo_kqfilter,
2085 .vop_print = ext2_print,
2086 .vop_read = ext2fifo_read,
2087 .vop_reclaim = ext2_reclaim,
2088 .vop_setattr = ext2_setattr,
2089 .vop_write = ext2fifo_write
2092 VNODEOP_SET(ext2_vnode_vops);
2093 VNODEOP_SET(ext2_spec_vops);
2094 VNODEOP_SET(ext2_fifo_vops);
2100 ext2_vnoperate(struct vop_generic_args *ap)
2102 return (VOCALL(&ext2_vnode_vops, ap));
2106 * ext2_vnoperatefifo()
2109 ext2_vnoperatefifo(struct vop_generic_args *ap)
2111 return (VOCALL(&ext2_fifo_vops, ap));