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
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13 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
14 * the permission of UNIX System Laboratories, Inc.
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17 * modification, are permitted provided that the following conditions
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20 * notice, this list of conditions and the following disclaimer.
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26 * This product includes software developed by the University of
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41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44 * @(#)ufs_vnops.c 8.27 (Berkeley) 5/27/95
45 * @(#)ext2_vnops.c 8.7 (Berkeley) 2/3/94
46 * $FreeBSD: src/sys/gnu/ext2fs/ext2_vnops.c,v 1.51.2.2 2003/01/02 17:26:18 bde Exp $
47 * $DragonFly: src/sys/vfs/gnu/ext2fs/ext2_vnops.c,v 1.43 2008/06/19 23:27:39 dillon Exp $
50 #include "opt_quota.h"
51 #include "opt_suiddir.h"
53 #include <sys/param.h>
54 #include <sys/systm.h>
55 #include <sys/resourcevar.h>
56 #include <sys/kernel.h>
58 #include <sys/fcntl.h>
63 #include <sys/mount.h>
65 #include <sys/vnode.h>
66 #include <sys/dirent.h>
67 #include <sys/lockf.h>
68 #include <sys/event.h>
72 #include <sys/namei.h>
73 #include <sys/signalvar.h>
74 #include <sys/unistd.h>
77 #include <vm/vm_extern.h>
78 #include <vm/vm_zone.h>
79 #include <vm/vnode_pager.h>
82 #include <sys/thread2.h>
84 #include <vfs/fifofs/fifo.h>
89 #include "ext2mount.h"
90 #include "ext2_fs_sb.h"
92 #include "ext2_extern.h"
95 static int ext2_access (struct vop_access_args *);
96 static int ext2_advlock (struct vop_advlock_args *);
97 static int ext2_chmod (struct vnode *, int, struct ucred *);
98 static int ext2_chown (struct vnode *, uid_t, gid_t, struct ucred *);
99 static int ext2_close (struct vop_close_args *);
100 static int ext2_getattr (struct vop_getattr_args *);
101 static int ext2_makeinode (int mode, struct vnode *, struct vnode **, struct componentname *);
102 static int ext2_mmap (struct vop_mmap_args *);
103 static int ext2_open (struct vop_open_args *);
104 static int ext2_pathconf (struct vop_pathconf_args *);
105 static int ext2_print (struct vop_print_args *);
106 static int ext2_readlink (struct vop_readlink_args *);
107 static int ext2_setattr (struct vop_setattr_args *);
108 static int ext2_strategy (struct vop_strategy_args *);
109 static int ext2_whiteout (struct vop_old_whiteout_args *);
110 static int filt_ext2read (struct knote *kn, long hint);
111 static int filt_ext2write (struct knote *kn, long hint);
112 static int filt_ext2vnode (struct knote *kn, long hint);
113 static void filt_ext2detach (struct knote *kn);
114 static int ext2_kqfilter (struct vop_kqfilter_args *ap);
115 static int ext2spec_close (struct vop_close_args *);
116 static int ext2spec_read (struct vop_read_args *);
117 static int ext2spec_write (struct vop_write_args *);
118 static int ext2fifo_close (struct vop_close_args *);
119 static int ext2fifo_kqfilter (struct vop_kqfilter_args *);
120 static int ext2fifo_read (struct vop_read_args *);
121 static int ext2fifo_write (struct vop_write_args *);
123 static int ext2_fsync (struct vop_fsync_args *);
124 static int ext2_read (struct vop_read_args *);
125 static int ext2_write (struct vop_write_args *);
126 static int ext2_remove (struct vop_old_remove_args *);
127 static int ext2_link (struct vop_old_link_args *);
128 static int ext2_rename (struct vop_old_rename_args *);
129 static int ext2_mkdir (struct vop_old_mkdir_args *);
130 static int ext2_rmdir (struct vop_old_rmdir_args *);
131 static int ext2_create (struct vop_old_create_args *);
132 static int ext2_mknod (struct vop_old_mknod_args *);
133 static int ext2_symlink (struct vop_old_symlink_args *);
134 static int ext2_getpages (struct vop_getpages_args *);
136 #include "ext2_readwrite.c"
142 #define SETHIGH(q, h) { \
145 tmp.val[_QUAD_HIGHWORD] = (h); \
148 #define SETLOW(q, l) { \
151 tmp.val[_QUAD_LOWWORD] = (l); \
154 #define VN_KNOTE(vp, b) \
155 KNOTE(&vp->v_pollinfo.vpi_selinfo.si_note, (b))
157 #define OFSFMT(vp) ((vp)->v_mount->mnt_maxsymlinklen <= 0)
160 * A virgin directory (no blushing please).
161 * Note that the type and namlen fields are reversed relative to ufs.
162 * Also, we don't use `struct odirtemplate', since it would just cause
163 * endianness problems.
165 static struct dirtemplate ext2_mastertemplate = {
166 0, 12, 1, EXT2_FT_DIR, ".",
167 0, DIRBLKSIZ - 12, 2, EXT2_FT_DIR, ".."
169 static struct dirtemplate ext2_omastertemplate = {
170 0, 12, 1, EXT2_FT_UNKNOWN, ".",
171 0, DIRBLKSIZ - 12, 2, EXT2_FT_UNKNOWN, ".."
175 * Create a regular file
177 * ext2_create(struct vnode *a_dvp, struct vnode **a_vpp,
178 * struct componentname *a_cnp, struct vattr *a_vap)
181 ext2_create(struct vop_old_create_args *ap)
186 ext2_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
187 ap->a_dvp, ap->a_vpp, ap->a_cnp);
194 * Synch an open file.
196 * ext2_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
201 static int ext2_fsync_bp(struct buf *bp, void *data);
203 struct ext2_fsync_bp_info {
209 ext2_fsync(struct vop_fsync_args *ap)
211 struct ext2_fsync_bp_info info;
212 struct vnode *vp = ap->a_vp;
217 * XXX why is all this fs specific?
221 * Flush all dirty buffers associated with a vnode.
223 ext2_discard_prealloc(VTOI(vp));
225 lwkt_gettoken(&vlock, &vp->v_token);
228 info.waitfor = ap->a_waitfor;
229 count = RB_SCAN(buf_rb_tree, &vp->v_rbdirty_tree, NULL,
230 ext2_fsync_bp, &info);
234 if (ap->a_waitfor == MNT_WAIT) {
235 bio_track_wait(&vp->v_track_write, 0, 0);
237 if (!RB_EMPTY(&vp->v_rbdirty_tree)) {
238 vprint("ext2_fsync: dirty", vp);
243 lwkt_reltoken(&vlock);
244 return (EXT2_UPDATE(ap->a_vp, ap->a_waitfor == MNT_WAIT));
248 ext2_fsync_bp(struct buf *bp, void *data)
250 struct ext2_fsync_bp_info *info = data;
252 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT))
254 if ((bp->b_flags & B_DELWRI) == 0)
255 panic("ext2_fsync: not dirty");
260 * Wait for I/O associated with indirect blocks to complete,
261 * since there is no way to quickly wait for them below.
263 if (bp->b_vp == info->vp || info->waitfor == MNT_NOWAIT)
274 * ext2_mknod(struct vnode *a_dvp, struct vnode **a_vpp,
275 * struct componentname *a_cnp, struct vattr *a_vap)
279 ext2_mknod(struct vop_old_mknod_args *ap)
281 struct vattr *vap = ap->a_vap;
282 struct vnode **vpp = ap->a_vpp;
287 if (vap->va_rmajor != VNOVAL &&
288 makeudev(vap->va_rmajor, vap->va_rminor) == NOUDEV) {
292 error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
293 ap->a_dvp, vpp, ap->a_cnp);
297 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
298 if (vap->va_rmajor != VNOVAL) {
300 * Want to be able to use this to make badblock
301 * inodes, so don't truncate the dev number.
303 ip->i_rdev = makeudev(vap->va_rmajor, vap->va_rminor);
306 * Remove inode, then reload it through VFS_VGET so it is
307 * checked to see if it is an alias of an existing entry in
310 (*vpp)->v_type = VNON;
311 ino = ip->i_number; /* Save this before vgone() invalidates ip. */
312 vgone_vxlocked(*vpp);
314 error = VFS_VGET(ap->a_dvp->v_mount, NULL, ino, vpp);
323 * ext2_remove(struct vnode *a_dvp, struct vnode *a_vp,
324 * struct componentname *a_cnp)
327 ext2_remove(struct vop_old_remove_args *ap)
330 struct vnode *vp = ap->a_vp;
331 struct vnode *dvp = ap->a_dvp;
335 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
336 (VTOI(dvp)->i_flags & APPEND)) {
340 error = ext2_dirremove(dvp, ap->a_cnp);
343 ip->i_flag |= IN_CHANGE;
352 * ext2_link(struct vnode *a_tdvp, struct vnode *a_vp,
353 * struct componentname *a_cnp)
356 ext2_link(struct vop_old_link_args *ap)
358 struct vnode *vp = ap->a_vp;
359 struct vnode *tdvp = ap->a_tdvp;
360 struct componentname *cnp = ap->a_cnp;
364 if (tdvp->v_mount != vp->v_mount) {
368 if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE))) {
372 if ((nlink_t)ip->i_nlink >= LINK_MAX) {
376 if (ip->i_flags & (IMMUTABLE | APPEND)) {
381 ip->i_flag |= IN_CHANGE;
382 error = EXT2_UPDATE(vp, 1);
384 error = ext2_direnter(ip, tdvp, cnp);
387 ip->i_flag |= IN_CHANGE;
397 * Rename system call. fdvp, fvp are ref'd. tvp, tdvp are ref'd and locked.
398 * all vp's are released and must be in an unlocked state on return.
400 * ext2_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
401 * struct componentname *a_fcnp, struct vnode *a_tdvp,
402 * struct vnode *a_tvp, struct componentname *a_tcnp)
405 ext2_rename(struct vop_old_rename_args *ap)
407 struct vnode *tvp = ap->a_tvp;
408 struct vnode *tdvp = ap->a_tdvp;
409 struct vnode *fvp = ap->a_fvp;
410 struct vnode *fdvp = ap->a_fdvp;
411 struct componentname *tcnp = ap->a_tcnp;
412 struct componentname *fcnp = ap->a_fcnp;
413 struct inode *ip, *xp, *dp;
414 struct dirtemplate dirbuf;
415 int doingdirectory = 0, oldparent = 0, newparent = 0;
420 * Check for cross-device rename.
422 if ((fvp->v_mount != tdvp->v_mount) ||
423 (tvp && (fvp->v_mount != tvp->v_mount)) ||
438 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
439 (VTOI(tdvp)->i_flags & APPEND))) {
445 * Renaming a file to itself has no effect. The upper layers should
446 * not call us in that case. Temporarily just warn if they do.
453 if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
457 * fvp, tvp, tdvp locked. fdvp not locked but note that fdvp may
462 if (ip->i_nlink >= LINK_MAX) {
467 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
468 || (dp->i_flags & APPEND)) {
473 if ((ip->i_mode & IFMT) == IFDIR) {
475 * Avoid ".", "..", and aliases of "." for obvious reasons.
477 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
478 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & CNP_ISDOTDOT ||
479 (ip->i_flag & IN_RENAME)) {
484 ip->i_flag |= IN_RENAME;
485 oldparent = dp->i_number;
490 * tvp is non-NULL if the target exists. fvp is still locked but
491 * we will unlock it soon. The 'bad' goto target requires dp and
492 * xp to be correctly assigned.
501 * 1) Bump link count while we're moving stuff
502 * around. If we crash somewhere before
503 * completing our work, the link count
504 * may be wrong, but correctable.
507 ip->i_flag |= IN_CHANGE;
508 if ((error = EXT2_UPDATE(fvp, 1)) != 0) {
514 * If ".." must be changed (ie the directory gets a new
515 * parent) then the source directory must not be in the
516 * directory heirarchy above the target, as this would
517 * orphan everything below the source directory. Also
518 * the user must have write permission in the source so
519 * as to be able to change "..". We must repeat the call
520 * to namei, as the parent directory is unlocked by the
521 * call to checkpath().
523 error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred);
527 * tvp (if not NULL) and tdvp are locked. fvp and fdvp are not.
528 * dp and xp are set according to tdvp and tvp.
530 if (oldparent != dp->i_number)
531 newparent = dp->i_number;
532 if (doingdirectory && newparent) {
533 if (error) /* write access check above */
537 * Prepare for relookup, get rid of xp
545 * checkpath vput()'s tdvp (VTOI(dp)) on return no matter what,
546 * get an extra ref so we wind up with just an unlocked, ref'd
547 * tdvp. The 'out' target skips xp and tdvp cleanups. Our
548 * tdvp is now unlocked so we have to clean it up ourselves.
551 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
552 tcnp->cn_flags |= CNP_PDIRUNLOCK;
558 * relookup no longer messes with the ref count. An unlocked
559 * tdvp must be passed and if no error occurs a locked tdvp
560 * will be returned. We have to use the out target again.
562 error = relookup(tdvp, &tvp, tcnp);
564 if (tcnp->cn_flags & CNP_PDIRUNLOCK)
572 * tdvp is locked at this point. in the RENAME case tvp may
573 * be NULL without an error, assign xp accordingly. The
574 * 'bad' target can be used again after this.
581 * 2) If target doesn't exist, link the target
582 * to the source and unlink the source.
583 * Otherwise, rewrite the target directory
584 * entry to reference the source inode and
585 * expunge the original entry's existence.
587 * tdvp and tvp are cleaned up by this code. tvp is only good if
591 if (dp->i_dev != ip->i_dev)
592 panic("ext2_rename: EXDEV");
594 * Account for ".." in new directory.
595 * When source and destination have the same
596 * parent we don't fool with the link count.
598 if (doingdirectory && newparent) {
599 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
604 dp->i_flag |= IN_CHANGE;
605 error = EXT2_UPDATE(tdvp, 1);
609 error = ext2_direnter(ip, tdvp, tcnp);
611 if (doingdirectory && newparent) {
613 dp->i_flag |= IN_CHANGE;
614 EXT2_UPDATE(tdvp, 1);
620 * manual cleanup, we can't use the bad or out target after
625 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
626 panic("ext2_rename: EXDEV");
628 * Short circuit rename(foo, foo).
630 if (xp->i_number == ip->i_number)
631 panic("ext2_rename: same file");
633 * If the parent directory is "sticky", then the user must
634 * own the parent directory, or the destination of the rename,
635 * otherwise the destination may not be changed (except by
636 * root). This implements append-only directories.
638 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
639 tcnp->cn_cred->cr_uid != dp->i_uid &&
640 xp->i_uid != tcnp->cn_cred->cr_uid) {
645 * Target must be empty if a directory and have no links
646 * to it. Also, ensure source and target are compatible
647 * (both directories, or both not directories).
649 if ((xp->i_mode&IFMT) == IFDIR) {
650 if (! ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
655 if (!doingdirectory) {
659 } else if (doingdirectory) {
663 error = ext2_dirrewrite(dp, ip, tcnp);
667 * If the target directory is in the same
668 * directory as the source directory,
669 * decrement the link count on the parent
670 * of the target directory.
672 if (doingdirectory && !newparent) {
674 dp->i_flag |= IN_CHANGE;
678 * manual cleanup, we can't use the bad or out target after
684 * Adjust the link count of the target to
685 * reflect the dirrewrite above. If this is
686 * a directory it is empty and there are
687 * no links to it, so we can squash the inode and
688 * any space associated with it. We disallowed
689 * renaming over top of a directory with links to
690 * it above, as the remaining link would point to
691 * a directory without "." or ".." entries.
694 if (doingdirectory) {
695 if (--xp->i_nlink != 0)
696 panic("ext2_rename: linked directory");
697 error = EXT2_TRUNCATE(tvp, (off_t)0, IO_SYNC,
700 xp->i_flag |= IN_CHANGE;
706 * tvp and tdvp have been cleaned up. The bad and out targets may
707 * not be used. fvp and fdvp are ref'd but not locked. ip
708 * still represents the old fvp and ip->i_flag may still have IN_RENAME
709 * set (if doingdirectory).
713 * 3) Unlink the source.
715 * fdvp is locked and ref'd. ap->a_fvp holds the old lookup unlocked
716 * and ref'd, fvp will hold the new lookup locked and ref'd.
718 * After the relookup ap->a_fvp must be released as part of our
719 * cleanup, not just fdvp and fvp. And, on success, fdvp and
720 * fvp will be locked so the bad and out targets cannot be used.
722 fcnp->cn_flags &= ~CNP_MODMASK;
723 fcnp->cn_flags |= CNP_LOCKPARENT;
724 KKASSERT(fcnp->cn_flags & CNP_PDIRUNLOCK);
725 error = relookup(fdvp, &fvp, fcnp);
728 * From name has disappeared.
731 panic("ext2_rename: lost dir entry");
732 /* ip->i_flag only sets IN_RENAME if doingdirectory */
734 if (fcnp->cn_flags & CNP_PDIRUNLOCK)
740 KKASSERT((fcnp->cn_flags & CNP_PDIRUNLOCK) == 0);
743 * This case shouldn't occur
747 * From name has disappeared.
750 panic("ext2_rename: lost dir entry");
751 /* ip->i_flag only sets IN_RENAME if doingdirectory */
759 * fvp and fdvp are both ref'd and locked.
765 * Ensure that the directory entry still exists and has not
766 * changed while the new name has been entered. If the source is
767 * a file then the entry may have been unlinked or renamed. In
768 * either case there is no further work to be done. If the source
769 * is a directory then it cannot have been rmdir'ed; its link
770 * count of three would cause a rmdir to fail with ENOTEMPTY.
771 * The IN_RENAME flag ensures that it cannot be moved by another
776 panic("ext2_rename: lost dir entry");
777 /* ip->i_flag only sets IN_RENAME if doingdirectory */
780 * If the source is a directory with a
781 * new parent, the link count of the old
782 * parent directory must be decremented
783 * and ".." set to point to the new parent.
785 if (doingdirectory && newparent) {
787 dp->i_flag |= IN_CHANGE;
788 error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
789 sizeof (struct dirtemplate), (off_t)0,
790 UIO_SYSSPACE, IO_NODELOCKED,
791 tcnp->cn_cred, NULL);
793 /* Like ext2 little-endian: */
794 namlen = dirbuf.dotdot_type;
796 dirbuf.dotdot_name[0] != '.' ||
797 dirbuf.dotdot_name[1] != '.') {
798 ext2_dirbad(xp, (doff_t)12,
799 "rename: mangled dir");
801 dirbuf.dotdot_ino = newparent;
802 vn_rdwr(UIO_WRITE, fvp,
804 sizeof (struct dirtemplate),
805 (off_t)0, UIO_SYSSPACE,
806 IO_NODELOCKED|IO_SYNC,
807 tcnp->cn_cred, NULL);
811 error = ext2_dirremove(fdvp, fcnp);
814 xp->i_flag |= IN_CHANGE;
816 xp->i_flag &= ~IN_RENAME;
830 ip->i_flag &= ~IN_RENAME;
831 if (vn_lock(fvp, LK_EXCLUSIVE) == 0) {
833 ip->i_flag |= IN_CHANGE;
834 ip->i_flag &= ~IN_RENAME;
845 * ext2_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
846 * struct componentname *a_cnp, struct vattr *a_vap)
849 ext2_mkdir(struct vop_old_mkdir_args *ap)
851 struct vnode *dvp = ap->a_dvp;
852 struct vattr *vap = ap->a_vap;
853 struct componentname *cnp = ap->a_cnp;
854 struct inode *ip, *dp;
856 struct dirtemplate dirtemplate, *dtp;
860 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
864 dmode = vap->va_mode & 0777;
867 * Must simulate part of ext2_makeinode here to acquire the inode,
868 * but not have it entered in the parent directory. The entry is
869 * made later after writing "." and ".." entries.
871 error = EXT2_VALLOC(dvp, dmode, cnp->cn_cred, &tvp);
875 ip->i_gid = dp->i_gid;
879 struct ucred ucred, *ucp;
883 * if we are hacking owners here, (only do this where told to)
884 * and we are not giving it TOO root, (would subvert quotas)
885 * then go ahead and give it to the other user.
886 * The new directory also inherits the SUID bit.
887 * If user's UID and dir UID are the same,
888 * 'give it away' so that the SUID is still forced on.
890 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
891 (dp->i_mode & ISUID) && dp->i_uid) {
893 ip->i_uid = dp->i_uid;
895 if (dp->i_uid != cnp->cn_cred->cr_uid) {
897 * make sure the correct user gets charged
899 * Make a dummy credential for the victim.
900 * XXX This seems to never be accessed out of
901 * our context so a stack variable is ok.
904 ucred.cr_uid = ip->i_uid;
905 ucred.cr_ngroups = 1;
906 ucred.cr_groups[0] = dp->i_gid;
911 ip->i_uid = cnp->cn_cred->cr_uid;
914 if ((error = ext2_getinoquota(ip)) ||
915 (error = ext2_chkiq(ip, 1, ucp, 0))) {
916 EXT2_VFREE(tvp, ip->i_number, dmode);
923 ip->i_uid = cnp->cn_cred->cr_uid;
925 if ((error = ext2_getinoquota(ip)) ||
926 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
927 EXT2_VFREE(tvp, ip->i_number, dmode);
933 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
935 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
937 if (cnp->cn_flags & CNP_ISWHITEOUT)
938 ip->i_flags |= UF_OPAQUE;
939 error = EXT2_UPDATE(tvp, 1);
942 * The vnode must have a VM object in order to issue buffer cache
948 * Bump link count in parent directory
949 * to reflect work done below. Should
950 * be done before reference is created
951 * so reparation is possible if we crash.
954 dp->i_flag |= IN_CHANGE;
955 error = EXT2_UPDATE(dvp, 1);
959 /* Initialize directory with "." and ".." from static template. */
960 if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs->s_es,
961 EXT2_FEATURE_INCOMPAT_FILETYPE))
962 dtp = &ext2_mastertemplate;
964 dtp = &ext2_omastertemplate;
966 dirtemplate.dot_ino = ip->i_number;
967 dirtemplate.dotdot_ino = dp->i_number;
968 /* note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE
969 * so let's just redefine it - for this function only
972 #define DIRBLKSIZ VTOI(dvp)->i_e2fs->s_blocksize
973 dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
974 error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
975 sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
976 IO_NODELOCKED|IO_SYNC, cnp->cn_cred, NULL);
979 dp->i_flag |= IN_CHANGE;
982 if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
983 panic("ext2_mkdir: blksize"); /* XXX should grow with balloc() */
985 ip->i_size = DIRBLKSIZ;
986 ip->i_flag |= IN_CHANGE;
989 /* Directory set up, now install its entry in the parent directory. */
990 error = ext2_direnter(ip, dvp, cnp);
993 dp->i_flag |= IN_CHANGE;
997 * No need to do an explicit VOP_TRUNCATE here, vrele will do this
998 * for us because we set the link count to 0.
1002 ip->i_flag |= IN_CHANGE;
1009 #define DIRBLKSIZ DEV_BSIZE
1013 * Rmdir system call.
1015 * ext2_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
1016 * struct componentname *a_cnp)
1019 ext2_rmdir(struct vop_old_rmdir_args *ap)
1021 struct vnode *vp = ap->a_vp;
1022 struct vnode *dvp = ap->a_dvp;
1023 struct componentname *cnp = ap->a_cnp;
1024 struct inode *ip, *dp;
1031 * Verify the directory is empty (and valid).
1032 * (Rmdir ".." won't be valid since
1033 * ".." will contain a reference to
1034 * the current directory and thus be
1038 if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
1042 if ((dp->i_flags & APPEND)
1043 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1048 * Delete reference to directory before purging
1049 * inode. If we crash in between, the directory
1050 * will be reattached to lost+found,
1052 error = ext2_dirremove(dvp, cnp);
1056 dp->i_flag |= IN_CHANGE;
1059 * Truncate inode. The only stuff left
1060 * in the directory is "." and "..". The
1061 * "." reference is inconsequential since
1062 * we're quashing it. The ".." reference
1063 * has already been adjusted above. We've
1064 * removed the "." reference and the reference
1065 * in the parent directory, but there may be
1066 * other hard links so decrement by 2 and
1067 * worry about them later.
1070 error = EXT2_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
1071 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1077 * symlink -- make a symbolic link
1079 * ext2_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
1080 * struct componentname *a_cnp, struct vattr *a_vap,
1084 ext2_symlink(struct vop_old_symlink_args *ap)
1086 struct vnode *vp, **vpp = ap->a_vpp;
1090 error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
1095 len = strlen(ap->a_target);
1096 if (len < vp->v_mount->mnt_maxsymlinklen) {
1098 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
1100 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1103 * Make sure we have a VM object in order to use
1106 if (vp->v_object == NULL)
1109 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
1110 UIO_SYSSPACE, IO_NODELOCKED,
1111 ap->a_cnp->cn_cred, NULL);
1121 * Allocate a new inode.
1124 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
1125 struct componentname *cnp)
1127 struct inode *ip, *pdir;
1133 if ((mode & IFMT) == 0)
1136 error = EXT2_VALLOC(dvp, mode, cnp->cn_cred, &tvp);
1141 ip->i_gid = pdir->i_gid;
1145 struct ucred ucred, *ucp;
1150 * not the owner of the directory,
1151 * and we are hacking owners here, (only do this where told to)
1152 * and we are not giving it TOO root, (would subvert quotas)
1153 * then go ahead and give it to the other user.
1154 * Note that this drops off the execute bits for security.
1156 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
1157 (pdir->i_mode & ISUID) &&
1158 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
1159 ip->i_uid = pdir->i_uid;
1163 * make sure the correct user gets charged
1165 * Quickly knock up a dummy credential for the victim.
1166 * XXX This seems to never be accessed out of our
1167 * context so a stack variable is ok.
1170 ucred.cr_uid = ip->i_uid;
1171 ucred.cr_ngroups = 1;
1172 ucred.cr_groups[0] = pdir->i_gid;
1176 ip->i_uid = cnp->cn_cred->cr_uid;
1180 if ((error = ext2_getinoquota(ip)) ||
1181 (error = ext2_chkiq(ip, 1, ucp, 0))) {
1182 EXT2_VFREE(tvp, ip->i_number, mode);
1189 ip->i_uid = cnp->cn_cred->cr_uid;
1191 if ((error = ext2_getinoquota(ip)) ||
1192 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
1193 EXT2_VFREE(tvp, ip->i_number, mode);
1199 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
1201 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
1203 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
1204 priv_check_cred(cnp->cn_cred, PRIV_VFS_SETGID, 0))
1205 ip->i_mode &= ~ISGID;
1207 if (cnp->cn_flags & CNP_ISWHITEOUT)
1208 ip->i_flags |= UF_OPAQUE;
1211 * Regular files and directories need VM objects. Softlinks do
1212 * not (not immediately anyway).
1214 if (tvp->v_type == VREG || tvp->v_type == VDIR)
1218 * Make sure inode goes to disk before directory entry.
1220 error = EXT2_UPDATE(tvp, 1);
1223 error = ext2_direnter(ip, dvp, cnp);
1232 * Write error occurred trying to update the inode
1233 * or the directory so must deallocate the inode.
1236 ip->i_flag |= IN_CHANGE;
1244 * XXX By default, wimp out... note that a_offset is ignored (and always
1248 ext2_getpages(struct vop_getpages_args *ap)
1250 return (vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
1255 ext2_itimes(struct vnode *vp)
1261 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
1263 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp))
1264 ip->i_flag |= IN_LAZYMOD;
1266 ip->i_flag |= IN_MODIFIED;
1267 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
1269 if (ip->i_flag & IN_ACCESS) {
1270 ip->i_atime = ts.tv_sec;
1271 ip->i_atimensec = ts.tv_nsec;
1273 if (ip->i_flag & IN_UPDATE) {
1274 ip->i_mtime = ts.tv_sec;
1275 ip->i_mtimensec = ts.tv_nsec;
1278 if (ip->i_flag & IN_CHANGE) {
1279 ip->i_ctime = ts.tv_sec;
1280 ip->i_ctimensec = ts.tv_nsec;
1283 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
1291 * ext2_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
1292 * struct file *a_fp)
1297 ext2_open(struct vop_open_args *ap)
1299 struct vnode *vp = ap->a_vp;
1302 * Files marked append-only must be opened for appending.
1304 if ((VTOI(vp)->i_flags & APPEND) &&
1305 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) {
1308 return (vop_stdopen(ap));
1314 * Update the times on the inode.
1316 * ext2_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1321 ext2_close(struct vop_close_args *ap)
1323 struct vnode *vp = ap->a_vp;
1325 if (vp->v_sysref.refcnt > 1)
1327 return (vop_stdclose(ap));
1331 * ext2_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
1335 ext2_access(struct vop_access_args *ap)
1337 struct vnode *vp = ap->a_vp;
1338 struct inode *ip = VTOI(vp);
1339 struct ucred *cred = ap->a_cred;
1340 mode_t mask, mode = ap->a_mode;
1348 * Disallow write attempts on read-only filesystems;
1349 * unless the file is a socket, fifo, or a block or
1350 * character device resident on the filesystem.
1352 if (mode & VWRITE) {
1353 switch (vp->v_type) {
1357 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1360 if ((error = ext2_getinoquota(ip)) != 0)
1369 /* If immutable bit set, nobody gets to write it. */
1370 if ((mode & VWRITE) && (ip->i_flags & IMMUTABLE))
1373 /* Otherwise, user id 0 always gets access. */
1374 if (cred->cr_uid == 0)
1379 /* Otherwise, check the owner. */
1380 if (cred->cr_uid == ip->i_uid) {
1387 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1390 /* Otherwise, check the groups. */
1391 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
1392 if (ip->i_gid == *gp) {
1399 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1402 /* Otherwise, check everyone else. */
1409 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1413 * ext2_getattr(struct vnode *a_vp, struct vattr *a_vap)
1418 ext2_getattr(struct vop_getattr_args *ap)
1420 struct vnode *vp = ap->a_vp;
1421 struct inode *ip = VTOI(vp);
1422 struct vattr *vap = ap->a_vap;
1426 * Copy from inode table
1428 vap->va_fsid = dev2udev(ip->i_dev);
1429 vap->va_fileid = ip->i_number;
1430 vap->va_mode = ip->i_mode & ~IFMT;
1431 vap->va_nlink = VFSTOEXT2(vp->v_mount)->um_i_effnlink_valid ?
1432 ip->i_effnlink : ip->i_nlink;
1433 vap->va_uid = ip->i_uid;
1434 vap->va_gid = ip->i_gid;
1435 vap->va_rmajor = umajor(ip->i_rdev);
1436 vap->va_rminor = uminor(ip->i_rdev);
1437 vap->va_size = ip->i_din.di_size;
1438 vap->va_atime.tv_sec = ip->i_atime;
1439 vap->va_atime.tv_nsec = ip->i_atimensec;
1440 vap->va_mtime.tv_sec = ip->i_mtime;
1441 vap->va_mtime.tv_nsec = ip->i_mtimensec;
1442 vap->va_ctime.tv_sec = ip->i_ctime;
1443 vap->va_ctime.tv_nsec = ip->i_ctimensec;
1444 vap->va_flags = ip->i_flags;
1445 vap->va_gen = ip->i_gen;
1446 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
1447 vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
1448 vap->va_type = IFTOVT(ip->i_mode);
1449 vap->va_filerev = ip->i_modrev;
1454 * Set attribute vnode op. called from several syscalls
1456 * ext2_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
1460 ext2_setattr(struct vop_setattr_args *ap)
1462 struct vattr *vap = ap->a_vap;
1463 struct vnode *vp = ap->a_vp;
1464 struct inode *ip = VTOI(vp);
1465 struct ucred *cred = ap->a_cred;
1469 * Check for unsettable attributes.
1471 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
1472 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
1473 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
1474 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
1477 if (vap->va_flags != VNOVAL) {
1478 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1480 if (cred->cr_uid != ip->i_uid &&
1481 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)))
1484 * Note that a root chflags becomes a user chflags when
1485 * we are jailed, unless the jail.chflags_allowed sysctl
1488 if (cred->cr_uid == 0 &&
1489 (!jailed(cred) || jail_chflags_allowed)) {
1491 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) &&
1494 ip->i_flags = vap->va_flags;
1497 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
1498 (vap->va_flags & UF_SETTABLE) != vap->va_flags)
1500 ip->i_flags &= SF_SETTABLE;
1501 ip->i_flags |= (vap->va_flags & UF_SETTABLE);
1503 ip->i_flag |= IN_CHANGE;
1504 if (vap->va_flags & (IMMUTABLE | APPEND))
1507 if (ip->i_flags & (IMMUTABLE | APPEND))
1510 * Go through the fields and update iff not VNOVAL.
1512 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
1513 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1515 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred)) != 0)
1518 if (vap->va_size != VNOVAL) {
1520 * Disallow write attempts on read-only filesystems;
1521 * unless the file is a socket, fifo, or a block or
1522 * character device resident on the filesystem.
1524 switch (vp->v_type) {
1529 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1535 if ((error = EXT2_TRUNCATE(vp, vap->va_size, 0, cred)) != 0)
1539 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
1540 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1542 if (cred->cr_uid != ip->i_uid &&
1543 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) &&
1544 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1545 (error = VOP_ACCESS(vp, VWRITE, cred))))
1547 if (vap->va_atime.tv_sec != VNOVAL)
1548 ip->i_flag |= IN_ACCESS;
1549 if (vap->va_mtime.tv_sec != VNOVAL)
1550 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1552 if (vap->va_atime.tv_sec != VNOVAL) {
1553 ip->i_atime = vap->va_atime.tv_sec;
1554 ip->i_atimensec = vap->va_atime.tv_nsec;
1556 if (vap->va_mtime.tv_sec != VNOVAL) {
1557 ip->i_mtime = vap->va_mtime.tv_sec;
1558 ip->i_mtimensec = vap->va_mtime.tv_nsec;
1560 error = EXT2_UPDATE(vp, 0);
1565 if (vap->va_mode != (mode_t)VNOVAL) {
1566 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1568 error = ext2_chmod(vp, (int)vap->va_mode, cred);
1570 VN_KNOTE(vp, NOTE_ATTRIB);
1575 * Change the mode on a file.
1576 * Inode must be locked before calling.
1579 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred)
1581 struct inode *ip = VTOI(vp);
1584 if (cred->cr_uid != ip->i_uid) {
1585 error = priv_check_cred(cred, PRIV_VFS_CHMOD, 0);
1590 if (vp->v_type != VDIR && (mode & S_ISTXT))
1592 if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
1595 ip->i_mode &= ~ALLPERMS;
1596 ip->i_mode |= (mode & ALLPERMS);
1597 ip->i_flag |= IN_CHANGE;
1602 * Perform chown operation on inode ip;
1603 * inode must be locked prior to call.
1606 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred)
1608 struct inode *ip = VTOI(vp);
1617 if (uid == (uid_t)VNOVAL)
1619 if (gid == (gid_t)VNOVAL)
1622 * If we don't own the file, are trying to change the owner
1623 * of the file, or are not a member of the target group,
1624 * the caller must be superuser or the call fails.
1626 if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
1627 (gid != ip->i_gid && !(cred->cr_gid == gid ||
1628 groupmember((gid_t)gid, cred)))) &&
1629 (error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0)))
1634 if ((error = ext2_getinoquota(ip)) != 0)
1637 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1638 ip->i_dquot[USRQUOTA] = NODQUOT;
1641 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1642 ip->i_dquot[GRPQUOTA] = NODQUOT;
1644 change = ip->i_blocks;
1645 (void) ext2_chkdq(ip, -change, cred, CHOWN);
1646 (void) ext2_chkiq(ip, -1, cred, CHOWN);
1647 for (i = 0; i < MAXQUOTAS; i++) {
1648 ext2_dqrele(vp, ip->i_dquot[i]);
1649 ip->i_dquot[i] = NODQUOT;
1655 if ((error = ext2_getinoquota(ip)) == 0) {
1657 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1658 ip->i_dquot[USRQUOTA] = NODQUOT;
1661 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1662 ip->i_dquot[GRPQUOTA] = NODQUOT;
1664 if ((error = ext2_chkdq(ip, change, cred, CHOWN)) == 0) {
1665 if ((error = ext2_chkiq(ip, 1, cred, CHOWN)) == 0)
1668 (void)ext2_chkdq(ip, -change, cred, CHOWN|FORCE);
1670 for (i = 0; i < MAXQUOTAS; i++) {
1671 ext2_dqrele(vp, ip->i_dquot[i]);
1672 ip->i_dquot[i] = NODQUOT;
1677 if (ext2_getinoquota(ip) == 0) {
1679 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1680 ip->i_dquot[USRQUOTA] = NODQUOT;
1683 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1684 ip->i_dquot[GRPQUOTA] = NODQUOT;
1686 (void) ext2_chkdq(ip, change, cred, FORCE|CHOWN);
1687 (void) ext2_chkiq(ip, 1, cred, FORCE|CHOWN);
1688 (void) ext2_getinoquota(ip);
1692 if (ext2_getinoquota(ip))
1693 panic("ext2_chown: lost quota");
1695 ip->i_flag |= IN_CHANGE;
1696 if (cred->cr_uid != 0 && (ouid != uid || ogid != gid))
1697 ip->i_mode &= ~(ISUID | ISGID);
1704 * NB Currently unsupported.
1706 * ext2_mmap(struct vnode *a_vp, int a_fflags, struct ucred *a_cred)
1711 ext2_mmap(struct vop_mmap_args *ap)
1717 * whiteout vnode call
1719 * ext2_whiteout(struct vnode *a_dvp, struct componentname *a_cnp, int a_flags)
1723 ext2_whiteout(struct vop_old_whiteout_args *ap)
1725 return (EOPNOTSUPP);
1729 * Return target name of a symbolic link
1731 * ext2_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred)
1735 ext2_readlink(struct vop_readlink_args *ap)
1737 struct vnode *vp = ap->a_vp;
1738 struct inode *ip = VTOI(vp);
1742 if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
1743 (ip->i_din.di_blocks == 0)) { /* XXX - for old fastlink support */
1744 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
1747 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
1751 * Calculate the logical to physical mapping if not done already,
1752 * then call the device strategy routine.
1754 * In order to be able to swap to a file, the VOP_BMAP operation may not
1755 * deadlock on memory. See ext2_bmap() for details.
1757 * ext2_strategy(struct vnode *a_vp, struct bio *a_bio)
1761 ext2_strategy(struct vop_strategy_args *ap)
1763 struct bio *bio = ap->a_bio;
1765 struct buf *bp = bio->bio_buf;
1766 struct vnode *vp = ap->a_vp;
1771 if (vp->v_type == VBLK || vp->v_type == VCHR)
1772 panic("ext2_strategy: spec");
1773 nbio = push_bio(bio);
1774 if (nbio->bio_offset == NOOFFSET) {
1775 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
1776 NULL, NULL, bp->b_cmd);
1778 bp->b_error = error;
1779 bp->b_flags |= B_ERROR;
1780 /* I/O was never started on nbio, must biodone(bio) */
1784 if (nbio->bio_offset == NOOFFSET)
1787 if (nbio->bio_offset == NOOFFSET) {
1788 /* I/O was never started on nbio, must biodone(bio) */
1792 vn_strategy(ip->i_devvp, nbio);
1797 * Print out the contents of an inode.
1799 * ext2_print(struct vnode *a_vp)
1803 ext2_print(struct vop_print_args *ap)
1805 struct vnode *vp = ap->a_vp;
1806 struct inode *ip = VTOI(vp);
1808 kprintf("tag VT_EXT2FS, ino %lu, on dev %s (%d, %d)",
1809 (u_long)ip->i_number, devtoname(ip->i_dev), major(ip->i_dev),
1811 if (vp->v_type == VFIFO)
1813 lockmgr_printinfo(&vp->v_lock);
1819 * Read wrapper for special devices.
1821 * ext2spec_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1822 * struct ucred *a_cred)
1826 ext2spec_read(struct vop_read_args *ap)
1833 resid = uio->uio_resid;
1834 error = VOCALL(&spec_vnode_vops, &ap->a_head);
1836 * The inode may have been revoked during the call, so it must not
1837 * be accessed blindly here or in the other wrapper functions.
1839 ip = VTOI(ap->a_vp);
1840 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1841 ip->i_flag |= IN_ACCESS;
1846 * Write wrapper for special devices.
1848 * ext2spec_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1849 * struct ucred *a_cred)
1853 ext2spec_write(struct vop_write_args *ap)
1860 resid = uio->uio_resid;
1861 error = VOCALL(&spec_vnode_vops, &ap->a_head);
1862 ip = VTOI(ap->a_vp);
1863 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1864 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1869 * Close wrapper for special devices.
1871 * Update the times on the inode then do device close.
1873 * ext2spec_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1877 ext2spec_close(struct vop_close_args *ap)
1879 struct vnode *vp = ap->a_vp;
1881 if (vp->v_sysref.refcnt > 1)
1883 return (VOCALL(&spec_vnode_vops, &ap->a_head));
1887 * Read wrapper for fifos.
1889 * ext2fifo_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1890 * struct ucred *a_cred)
1894 ext2fifo_read(struct vop_read_args *ap)
1901 resid = uio->uio_resid;
1902 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1903 ip = VTOI(ap->a_vp);
1904 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL &&
1905 (uio->uio_resid != resid || (error == 0 && resid != 0)))
1906 VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
1911 * Write wrapper for fifos.
1913 * ext2fifo_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1914 * struct ucred *a_cred)
1918 ext2fifo_write(struct vop_write_args *ap)
1925 resid = uio->uio_resid;
1926 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1927 ip = VTOI(ap->a_vp);
1928 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1929 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1934 * Close wrapper for fifos.
1936 * Update the times on the inode then do device close.
1938 * ext2fifo_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1942 ext2fifo_close(struct vop_close_args *ap)
1944 struct vnode *vp = ap->a_vp;
1946 if (vp->v_sysref.refcnt > 1)
1948 return (VOCALL(&fifo_vnode_vops, &ap->a_head));
1952 * Kqfilter wrapper for fifos.
1954 * Fall through to ext2 kqfilter routines if needed
1958 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
1962 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1964 error = ext2_kqfilter(ap);
1969 * Return POSIX pathconf information applicable to ext2 filesystems.
1971 * ext2_pathconf(struct vnode *a_vp, int a_name, int *a_retval)
1975 ext2_pathconf(struct vop_pathconf_args *ap)
1977 switch (ap->a_name) {
1979 *ap->a_retval = LINK_MAX;
1982 *ap->a_retval = NAME_MAX;
1985 *ap->a_retval = PATH_MAX;
1988 *ap->a_retval = PIPE_BUF;
1990 case _PC_CHOWN_RESTRICTED:
2003 * Advisory record locking support
2005 * ext2_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, struct flock *a_fl,
2010 ext2_advlock(struct vop_advlock_args *ap)
2012 struct inode *ip = VTOI(ap->a_vp);
2014 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size));
2018 * Initialize the vnode associated with a new inode, handle aliased
2022 ext2_vinit(struct mount *mntp, struct vnode **vpp)
2031 switch(vp->v_type = IFTOVT(ip->i_mode)) {
2034 vp->v_ops = &mntp->mnt_vn_spec_ops;
2035 addaliasu(vp, umajor(ip->i_rdev), uminor(ip->i_rdev));
2038 vp->v_ops = &mntp->mnt_vn_fifo_ops;
2042 vinitvmio(vp, ip->i_size);
2045 if ((ip->i_size >= vp->v_mount->mnt_maxsymlinklen) &&
2046 ip->i_din.di_blocks != 0
2048 vinitvmio(vp, ip->i_size);
2056 if (ip->i_number == ROOTINO)
2057 vp->v_flag |= VROOT;
2059 * Initialize modrev times
2061 getmicrouptime(&tv);
2062 SETHIGH(ip->i_modrev, tv.tv_sec);
2063 SETLOW(ip->i_modrev, tv.tv_usec * 4294);
2068 static struct filterops ext2read_filtops =
2069 { 1, NULL, filt_ext2detach, filt_ext2read };
2070 static struct filterops ext2write_filtops =
2071 { 1, NULL, filt_ext2detach, filt_ext2write };
2072 static struct filterops ext2vnode_filtops =
2073 { 1, NULL, filt_ext2detach, filt_ext2vnode };
2076 * ext2_kqfilter(struct vnode *a_vp, struct knote *a_kn)
2079 ext2_kqfilter(struct vop_kqfilter_args *ap)
2081 struct vnode *vp = ap->a_vp;
2082 struct knote *kn = ap->a_kn;
2085 switch (kn->kn_filter) {
2087 kn->kn_fop = &ext2read_filtops;
2090 kn->kn_fop = &ext2write_filtops;
2093 kn->kn_fop = &ext2vnode_filtops;
2099 kn->kn_hook = (caddr_t)vp;
2101 lwkt_gettoken(&vlock, &vp->v_token);
2102 SLIST_INSERT_HEAD(&vp->v_pollinfo.vpi_selinfo.si_note, kn, kn_selnext);
2103 lwkt_reltoken(&vlock);
2109 filt_ext2detach(struct knote *kn)
2111 struct vnode *vp = (struct vnode *)kn->kn_hook;
2114 lwkt_gettoken(&vlock, &vp->v_token);
2115 SLIST_REMOVE(&vp->v_pollinfo.vpi_selinfo.si_note,
2116 kn, knote, kn_selnext);
2117 lwkt_reltoken(&vlock);
2122 filt_ext2read(struct knote *kn, long hint)
2124 struct vnode *vp = (struct vnode *)kn->kn_hook;
2125 struct inode *ip = VTOI(vp);
2128 * filesystem is gone, so set the EOF flag and schedule
2129 * the knote for deletion.
2131 if (hint == NOTE_REVOKE) {
2132 kn->kn_flags |= (EV_EOF | EV_ONESHOT);
2136 kn->kn_data = ip->i_size - kn->kn_fp->f_offset;
2137 return (kn->kn_data != 0);
2142 filt_ext2write(struct knote *kn, long hint)
2145 * filesystem is gone, so set the EOF flag and schedule
2146 * the knote for deletion.
2148 if (hint == NOTE_REVOKE)
2149 kn->kn_flags |= (EV_EOF | EV_ONESHOT);
2156 filt_ext2vnode(struct knote *kn, long hint)
2158 if (kn->kn_sfflags & hint)
2159 kn->kn_fflags |= hint;
2160 if (hint == NOTE_REVOKE) {
2161 kn->kn_flags |= EV_EOF;
2164 return (kn->kn_fflags != 0);
2167 struct vop_ops ext2_vnode_vops = {
2168 .vop_default = vop_defaultop,
2169 .vop_fsync = ext2_fsync,
2170 .vop_read = ext2_read,
2171 .vop_reallocblks = ext2_reallocblks,
2172 .vop_write = ext2_write,
2173 .vop_access = ext2_access,
2174 .vop_advlock = ext2_advlock,
2175 .vop_bmap = ext2_bmap,
2176 .vop_old_lookup = ext2_lookup,
2177 .vop_close = ext2_close,
2178 .vop_old_create = ext2_create,
2179 .vop_getattr = ext2_getattr,
2180 .vop_inactive = ext2_inactive,
2181 .vop_old_link = ext2_link,
2182 .vop_old_mkdir = ext2_mkdir,
2183 .vop_old_mknod = ext2_mknod,
2184 .vop_mmap = ext2_mmap,
2185 .vop_open = ext2_open,
2186 .vop_pathconf = ext2_pathconf,
2187 .vop_poll = vop_stdpoll,
2188 .vop_kqfilter = ext2_kqfilter,
2189 .vop_print = ext2_print,
2190 .vop_readdir = ext2_readdir,
2191 .vop_readlink = ext2_readlink,
2192 .vop_reclaim = ext2_reclaim,
2193 .vop_old_remove = ext2_remove,
2194 .vop_old_rename = ext2_rename,
2195 .vop_old_rmdir = ext2_rmdir,
2196 .vop_setattr = ext2_setattr,
2197 .vop_strategy = ext2_strategy,
2198 .vop_old_symlink = ext2_symlink,
2199 .vop_old_whiteout = ext2_whiteout,
2200 .vop_getpages = ext2_getpages,
2201 .vop_putpages = vop_stdputpages
2204 struct vop_ops ext2_spec_vops = {
2205 .vop_default = ext2_vnoperatespec,
2206 .vop_fsync = ext2_fsync,
2207 .vop_access = ext2_access,
2208 .vop_close = ext2spec_close,
2209 .vop_getattr = ext2_getattr,
2210 .vop_inactive = ext2_inactive,
2211 .vop_print = ext2_print,
2212 .vop_read = ext2spec_read,
2213 .vop_reclaim = ext2_reclaim,
2214 .vop_setattr = ext2_setattr,
2215 .vop_write = ext2spec_write
2218 struct vop_ops ext2_fifo_vops = {
2219 .vop_default = ext2_vnoperatefifo,
2220 .vop_fsync = ext2_fsync,
2221 .vop_access = ext2_access,
2222 .vop_close = ext2fifo_close,
2223 .vop_getattr = ext2_getattr,
2224 .vop_inactive = ext2_inactive,
2225 .vop_kqfilter = ext2fifo_kqfilter,
2226 .vop_print = ext2_print,
2227 .vop_read = ext2fifo_read,
2228 .vop_reclaim = ext2_reclaim,
2229 .vop_setattr = ext2_setattr,
2230 .vop_write = ext2fifo_write
2233 VNODEOP_SET(ext2_vnode_vops);
2234 VNODEOP_SET(ext2_spec_vops);
2235 VNODEOP_SET(ext2_fifo_vops);
2241 ext2_vnoperate(struct vop_generic_args *ap)
2243 return (VOCALL(&ext2_vnode_vops, ap));
2247 * ext2_vnoperatefifo()
2250 ext2_vnoperatefifo(struct vop_generic_args *ap)
2252 return (VOCALL(&ext2_fifo_vops, ap));
2256 * ext2_vnoperatespec()
2259 ext2_vnoperatespec(struct vop_generic_args *ap)
2261 return (VOCALL(&ext2_spec_vops, ap));