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.
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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
27 * California, Berkeley and its contributors.
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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;
216 * XXX why is all this fs specific?
220 * Flush all dirty buffers associated with a vnode.
222 ext2_discard_prealloc(VTOI(vp));
227 info.waitfor = ap->a_waitfor;
228 count = RB_SCAN(buf_rb_tree, &vp->v_rbdirty_tree, NULL,
229 ext2_fsync_bp, &info);
233 if (ap->a_waitfor == MNT_WAIT) {
234 bio_track_wait(&vp->v_track_write, 0, 0);
236 if (!RB_EMPTY(&vp->v_rbdirty_tree)) {
237 vprint("ext2_fsync: dirty", vp);
243 return (EXT2_UPDATE(ap->a_vp, ap->a_waitfor == MNT_WAIT));
247 ext2_fsync_bp(struct buf *bp, void *data)
249 struct ext2_fsync_bp_info *info = data;
251 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT))
253 if ((bp->b_flags & B_DELWRI) == 0)
254 panic("ext2_fsync: not dirty");
259 * Wait for I/O associated with indirect blocks to complete,
260 * since there is no way to quickly wait for them below.
262 if (bp->b_vp == info->vp || info->waitfor == MNT_NOWAIT)
273 * ext2_mknod(struct vnode *a_dvp, struct vnode **a_vpp,
274 * struct componentname *a_cnp, struct vattr *a_vap)
278 ext2_mknod(struct vop_old_mknod_args *ap)
280 struct vattr *vap = ap->a_vap;
281 struct vnode **vpp = ap->a_vpp;
286 if (vap->va_rmajor != VNOVAL &&
287 makeudev(vap->va_rmajor, vap->va_rminor) == NOUDEV) {
291 error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
292 ap->a_dvp, vpp, ap->a_cnp);
296 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
297 if (vap->va_rmajor != VNOVAL) {
299 * Want to be able to use this to make badblock
300 * inodes, so don't truncate the dev number.
302 ip->i_rdev = makeudev(vap->va_rmajor, vap->va_rminor);
305 * Remove inode, then reload it through VFS_VGET so it is
306 * checked to see if it is an alias of an existing entry in
309 (*vpp)->v_type = VNON;
310 ino = ip->i_number; /* Save this before vgone() invalidates ip. */
311 vgone_vxlocked(*vpp);
313 error = VFS_VGET(ap->a_dvp->v_mount, ino, vpp);
322 * ext2_remove(struct vnode *a_dvp, struct vnode *a_vp,
323 * struct componentname *a_cnp)
326 ext2_remove(struct vop_old_remove_args *ap)
329 struct vnode *vp = ap->a_vp;
330 struct vnode *dvp = ap->a_dvp;
334 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
335 (VTOI(dvp)->i_flags & APPEND)) {
339 error = ext2_dirremove(dvp, ap->a_cnp);
342 ip->i_flag |= IN_CHANGE;
351 * ext2_link(struct vnode *a_tdvp, struct vnode *a_vp,
352 * struct componentname *a_cnp)
355 ext2_link(struct vop_old_link_args *ap)
357 struct vnode *vp = ap->a_vp;
358 struct vnode *tdvp = ap->a_tdvp;
359 struct componentname *cnp = ap->a_cnp;
363 if (tdvp->v_mount != vp->v_mount) {
367 if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE))) {
371 if ((nlink_t)ip->i_nlink >= LINK_MAX) {
375 if (ip->i_flags & (IMMUTABLE | APPEND)) {
380 ip->i_flag |= IN_CHANGE;
381 error = EXT2_UPDATE(vp, 1);
383 error = ext2_direnter(ip, tdvp, cnp);
386 ip->i_flag |= IN_CHANGE;
396 * Rename system call. fdvp, fvp are ref'd. tvp, tdvp are ref'd and locked.
397 * all vp's are released and must be in an unlocked state on return.
399 * ext2_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
400 * struct componentname *a_fcnp, struct vnode *a_tdvp,
401 * struct vnode *a_tvp, struct componentname *a_tcnp)
404 ext2_rename(struct vop_old_rename_args *ap)
406 struct vnode *tvp = ap->a_tvp;
407 struct vnode *tdvp = ap->a_tdvp;
408 struct vnode *fvp = ap->a_fvp;
409 struct vnode *fdvp = ap->a_fdvp;
410 struct componentname *tcnp = ap->a_tcnp;
411 struct componentname *fcnp = ap->a_fcnp;
412 struct inode *ip, *xp, *dp;
413 struct dirtemplate dirbuf;
414 int doingdirectory = 0, oldparent = 0, newparent = 0;
419 * Check for cross-device rename.
421 if ((fvp->v_mount != tdvp->v_mount) ||
422 (tvp && (fvp->v_mount != tvp->v_mount)) ||
437 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
438 (VTOI(tdvp)->i_flags & APPEND))) {
444 * Renaming a file to itself has no effect. The upper layers should
445 * not call us in that case. Temporarily just warn if they do.
452 if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
456 * fvp, tvp, tdvp locked. fdvp not locked but note that fdvp may
461 if (ip->i_nlink >= LINK_MAX) {
466 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
467 || (dp->i_flags & APPEND)) {
472 if ((ip->i_mode & IFMT) == IFDIR) {
474 * Avoid ".", "..", and aliases of "." for obvious reasons.
476 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
477 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & CNP_ISDOTDOT ||
478 (ip->i_flag & IN_RENAME)) {
483 ip->i_flag |= IN_RENAME;
484 oldparent = dp->i_number;
489 * tvp is non-NULL if the target exists. fvp is still locked but
490 * we will unlock it soon. The 'bad' goto target requires dp and
491 * xp to be correctly assigned.
500 * 1) Bump link count while we're moving stuff
501 * around. If we crash somewhere before
502 * completing our work, the link count
503 * may be wrong, but correctable.
506 ip->i_flag |= IN_CHANGE;
507 if ((error = EXT2_UPDATE(fvp, 1)) != 0) {
513 * If ".." must be changed (ie the directory gets a new
514 * parent) then the source directory must not be in the
515 * directory heirarchy above the target, as this would
516 * orphan everything below the source directory. Also
517 * the user must have write permission in the source so
518 * as to be able to change "..". We must repeat the call
519 * to namei, as the parent directory is unlocked by the
520 * call to checkpath().
522 error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred);
526 * tvp (if not NULL) and tdvp are locked. fvp and fdvp are not.
527 * dp and xp are set according to tdvp and tvp.
529 if (oldparent != dp->i_number)
530 newparent = dp->i_number;
531 if (doingdirectory && newparent) {
532 if (error) /* write access check above */
536 * Prepare for relookup, get rid of xp
544 * checkpath vput()'s tdvp (VTOI(dp)) on return no matter what,
545 * get an extra ref so we wind up with just an unlocked, ref'd
546 * tdvp. The 'out' target skips xp and tdvp cleanups. Our
547 * tdvp is now unlocked so we have to clean it up ourselves.
550 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
551 tcnp->cn_flags |= CNP_PDIRUNLOCK;
557 * relookup no longer messes with the ref count. An unlocked
558 * tdvp must be passed and if no error occurs a locked tdvp
559 * will be returned. We have to use the out target again.
561 error = relookup(tdvp, &tvp, tcnp);
563 if (tcnp->cn_flags & CNP_PDIRUNLOCK)
571 * tdvp is locked at this point. in the RENAME case tvp may
572 * be NULL without an error, assign xp accordingly. The
573 * 'bad' target can be used again after this.
580 * 2) If target doesn't exist, link the target
581 * to the source and unlink the source.
582 * Otherwise, rewrite the target directory
583 * entry to reference the source inode and
584 * expunge the original entry's existence.
586 * tdvp and tvp are cleaned up by this code. tvp is only good if
590 if (dp->i_dev != ip->i_dev)
591 panic("ext2_rename: EXDEV");
593 * Account for ".." in new directory.
594 * When source and destination have the same
595 * parent we don't fool with the link count.
597 if (doingdirectory && newparent) {
598 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
603 dp->i_flag |= IN_CHANGE;
604 error = EXT2_UPDATE(tdvp, 1);
608 error = ext2_direnter(ip, tdvp, tcnp);
610 if (doingdirectory && newparent) {
612 dp->i_flag |= IN_CHANGE;
613 EXT2_UPDATE(tdvp, 1);
619 * manual cleanup, we can't use the bad or out target after
624 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
625 panic("ext2_rename: EXDEV");
627 * Short circuit rename(foo, foo).
629 if (xp->i_number == ip->i_number)
630 panic("ext2_rename: same file");
632 * If the parent directory is "sticky", then the user must
633 * own the parent directory, or the destination of the rename,
634 * otherwise the destination may not be changed (except by
635 * root). This implements append-only directories.
637 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
638 tcnp->cn_cred->cr_uid != dp->i_uid &&
639 xp->i_uid != tcnp->cn_cred->cr_uid) {
644 * Target must be empty if a directory and have no links
645 * to it. Also, ensure source and target are compatible
646 * (both directories, or both not directories).
648 if ((xp->i_mode&IFMT) == IFDIR) {
649 if (! ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
654 if (!doingdirectory) {
658 } else if (doingdirectory) {
662 error = ext2_dirrewrite(dp, ip, tcnp);
666 * If the target directory is in the same
667 * directory as the source directory,
668 * decrement the link count on the parent
669 * of the target directory.
671 if (doingdirectory && !newparent) {
673 dp->i_flag |= IN_CHANGE;
677 * manual cleanup, we can't use the bad or out target after
683 * Adjust the link count of the target to
684 * reflect the dirrewrite above. If this is
685 * a directory it is empty and there are
686 * no links to it, so we can squash the inode and
687 * any space associated with it. We disallowed
688 * renaming over top of a directory with links to
689 * it above, as the remaining link would point to
690 * a directory without "." or ".." entries.
693 if (doingdirectory) {
694 if (--xp->i_nlink != 0)
695 panic("ext2_rename: linked directory");
696 error = EXT2_TRUNCATE(tvp, (off_t)0, IO_SYNC,
699 xp->i_flag |= IN_CHANGE;
705 * tvp and tdvp have been cleaned up. The bad and out targets may
706 * not be used. fvp and fdvp are ref'd but not locked. ip
707 * still represents the old fvp and ip->i_flag may still have IN_RENAME
708 * set (if doingdirectory).
712 * 3) Unlink the source.
714 * fdvp is locked and ref'd. ap->a_fvp holds the old lookup unlocked
715 * and ref'd, fvp will hold the new lookup locked and ref'd.
717 * After the relookup ap->a_fvp must be released as part of our
718 * cleanup, not just fdvp and fvp. And, on success, fdvp and
719 * fvp will be locked so the bad and out targets cannot be used.
721 fcnp->cn_flags &= ~CNP_MODMASK;
722 fcnp->cn_flags |= CNP_LOCKPARENT;
723 KKASSERT(fcnp->cn_flags & CNP_PDIRUNLOCK);
724 error = relookup(fdvp, &fvp, fcnp);
727 * From name has disappeared.
730 panic("ext2_rename: lost dir entry");
731 /* ip->i_flag only sets IN_RENAME if doingdirectory */
733 if (fcnp->cn_flags & CNP_PDIRUNLOCK)
739 KKASSERT((fcnp->cn_flags & CNP_PDIRUNLOCK) == 0);
742 * This case shouldn't occur
746 * From name has disappeared.
749 panic("ext2_rename: lost dir entry");
750 /* ip->i_flag only sets IN_RENAME if doingdirectory */
758 * fvp and fdvp are both ref'd and locked.
764 * Ensure that the directory entry still exists and has not
765 * changed while the new name has been entered. If the source is
766 * a file then the entry may have been unlinked or renamed. In
767 * either case there is no further work to be done. If the source
768 * is a directory then it cannot have been rmdir'ed; its link
769 * count of three would cause a rmdir to fail with ENOTEMPTY.
770 * The IN_RENAME flag ensures that it cannot be moved by another
775 panic("ext2_rename: lost dir entry");
776 /* ip->i_flag only sets IN_RENAME if doingdirectory */
779 * If the source is a directory with a
780 * new parent, the link count of the old
781 * parent directory must be decremented
782 * and ".." set to point to the new parent.
784 if (doingdirectory && newparent) {
786 dp->i_flag |= IN_CHANGE;
787 error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
788 sizeof (struct dirtemplate), (off_t)0,
789 UIO_SYSSPACE, IO_NODELOCKED,
790 tcnp->cn_cred, NULL);
792 /* Like ext2 little-endian: */
793 namlen = dirbuf.dotdot_type;
795 dirbuf.dotdot_name[0] != '.' ||
796 dirbuf.dotdot_name[1] != '.') {
797 ext2_dirbad(xp, (doff_t)12,
798 "rename: mangled dir");
800 dirbuf.dotdot_ino = newparent;
801 vn_rdwr(UIO_WRITE, fvp,
803 sizeof (struct dirtemplate),
804 (off_t)0, UIO_SYSSPACE,
805 IO_NODELOCKED|IO_SYNC,
806 tcnp->cn_cred, NULL);
810 error = ext2_dirremove(fdvp, fcnp);
813 xp->i_flag |= IN_CHANGE;
815 xp->i_flag &= ~IN_RENAME;
829 ip->i_flag &= ~IN_RENAME;
830 if (vn_lock(fvp, LK_EXCLUSIVE) == 0) {
832 ip->i_flag |= IN_CHANGE;
833 ip->i_flag &= ~IN_RENAME;
844 * ext2_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
845 * struct componentname *a_cnp, struct vattr *a_vap)
848 ext2_mkdir(struct vop_old_mkdir_args *ap)
850 struct vnode *dvp = ap->a_dvp;
851 struct vattr *vap = ap->a_vap;
852 struct componentname *cnp = ap->a_cnp;
853 struct inode *ip, *dp;
855 struct dirtemplate dirtemplate, *dtp;
859 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
863 dmode = vap->va_mode & 0777;
866 * Must simulate part of ext2_makeinode here to acquire the inode,
867 * but not have it entered in the parent directory. The entry is
868 * made later after writing "." and ".." entries.
870 error = EXT2_VALLOC(dvp, dmode, cnp->cn_cred, &tvp);
874 ip->i_gid = dp->i_gid;
878 struct ucred ucred, *ucp;
882 * if we are hacking owners here, (only do this where told to)
883 * and we are not giving it TOO root, (would subvert quotas)
884 * then go ahead and give it to the other user.
885 * The new directory also inherits the SUID bit.
886 * If user's UID and dir UID are the same,
887 * 'give it away' so that the SUID is still forced on.
889 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
890 (dp->i_mode & ISUID) && dp->i_uid) {
892 ip->i_uid = dp->i_uid;
894 if (dp->i_uid != cnp->cn_cred->cr_uid) {
896 * make sure the correct user gets charged
898 * Make a dummy credential for the victim.
899 * XXX This seems to never be accessed out of
900 * our context so a stack variable is ok.
903 ucred.cr_uid = ip->i_uid;
904 ucred.cr_ngroups = 1;
905 ucred.cr_groups[0] = dp->i_gid;
910 ip->i_uid = cnp->cn_cred->cr_uid;
913 if ((error = ext2_getinoquota(ip)) ||
914 (error = ext2_chkiq(ip, 1, ucp, 0))) {
915 EXT2_VFREE(tvp, ip->i_number, dmode);
922 ip->i_uid = cnp->cn_cred->cr_uid;
924 if ((error = ext2_getinoquota(ip)) ||
925 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
926 EXT2_VFREE(tvp, ip->i_number, dmode);
932 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
934 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
936 if (cnp->cn_flags & CNP_ISWHITEOUT)
937 ip->i_flags |= UF_OPAQUE;
938 error = EXT2_UPDATE(tvp, 1);
941 * The vnode must have a VM object in order to issue buffer cache
947 * Bump link count in parent directory
948 * to reflect work done below. Should
949 * be done before reference is created
950 * so reparation is possible if we crash.
953 dp->i_flag |= IN_CHANGE;
954 error = EXT2_UPDATE(dvp, 1);
958 /* Initialize directory with "." and ".." from static template. */
959 if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs->s_es,
960 EXT2_FEATURE_INCOMPAT_FILETYPE))
961 dtp = &ext2_mastertemplate;
963 dtp = &ext2_omastertemplate;
965 dirtemplate.dot_ino = ip->i_number;
966 dirtemplate.dotdot_ino = dp->i_number;
967 /* note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE
968 * so let's just redefine it - for this function only
971 #define DIRBLKSIZ VTOI(dvp)->i_e2fs->s_blocksize
972 dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
973 error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
974 sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
975 IO_NODELOCKED|IO_SYNC, cnp->cn_cred, NULL);
978 dp->i_flag |= IN_CHANGE;
981 if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
982 panic("ext2_mkdir: blksize"); /* XXX should grow with balloc() */
984 ip->i_size = DIRBLKSIZ;
985 ip->i_flag |= IN_CHANGE;
988 /* Directory set up, now install its entry in the parent directory. */
989 error = ext2_direnter(ip, dvp, cnp);
992 dp->i_flag |= IN_CHANGE;
996 * No need to do an explicit VOP_TRUNCATE here, vrele will do this
997 * for us because we set the link count to 0.
1001 ip->i_flag |= IN_CHANGE;
1008 #define DIRBLKSIZ DEV_BSIZE
1012 * Rmdir system call.
1014 * ext2_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
1015 * struct componentname *a_cnp)
1018 ext2_rmdir(struct vop_old_rmdir_args *ap)
1020 struct vnode *vp = ap->a_vp;
1021 struct vnode *dvp = ap->a_dvp;
1022 struct componentname *cnp = ap->a_cnp;
1023 struct inode *ip, *dp;
1030 * Verify the directory is empty (and valid).
1031 * (Rmdir ".." won't be valid since
1032 * ".." will contain a reference to
1033 * the current directory and thus be
1037 if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
1041 if ((dp->i_flags & APPEND)
1042 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1047 * Delete reference to directory before purging
1048 * inode. If we crash in between, the directory
1049 * will be reattached to lost+found,
1051 error = ext2_dirremove(dvp, cnp);
1055 dp->i_flag |= IN_CHANGE;
1058 * Truncate inode. The only stuff left
1059 * in the directory is "." and "..". The
1060 * "." reference is inconsequential since
1061 * we're quashing it. The ".." reference
1062 * has already been adjusted above. We've
1063 * removed the "." reference and the reference
1064 * in the parent directory, but there may be
1065 * other hard links so decrement by 2 and
1066 * worry about them later.
1069 error = EXT2_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
1070 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1076 * symlink -- make a symbolic link
1078 * ext2_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
1079 * struct componentname *a_cnp, struct vattr *a_vap,
1083 ext2_symlink(struct vop_old_symlink_args *ap)
1085 struct vnode *vp, **vpp = ap->a_vpp;
1089 error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
1094 len = strlen(ap->a_target);
1095 if (len < vp->v_mount->mnt_maxsymlinklen) {
1097 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
1099 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1102 * Make sure we have a VM object in order to use
1105 if (vp->v_object == NULL)
1108 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
1109 UIO_SYSSPACE, IO_NODELOCKED,
1110 ap->a_cnp->cn_cred, NULL);
1120 * Allocate a new inode.
1123 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
1124 struct componentname *cnp)
1126 struct inode *ip, *pdir;
1132 if ((mode & IFMT) == 0)
1135 error = EXT2_VALLOC(dvp, mode, cnp->cn_cred, &tvp);
1140 ip->i_gid = pdir->i_gid;
1144 struct ucred ucred, *ucp;
1149 * not the owner of the directory,
1150 * and we are hacking owners here, (only do this where told to)
1151 * and we are not giving it TOO root, (would subvert quotas)
1152 * then go ahead and give it to the other user.
1153 * Note that this drops off the execute bits for security.
1155 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
1156 (pdir->i_mode & ISUID) &&
1157 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
1158 ip->i_uid = pdir->i_uid;
1162 * make sure the correct user gets charged
1164 * Quickly knock up a dummy credential for the victim.
1165 * XXX This seems to never be accessed out of our
1166 * context so a stack variable is ok.
1169 ucred.cr_uid = ip->i_uid;
1170 ucred.cr_ngroups = 1;
1171 ucred.cr_groups[0] = pdir->i_gid;
1175 ip->i_uid = cnp->cn_cred->cr_uid;
1179 if ((error = ext2_getinoquota(ip)) ||
1180 (error = ext2_chkiq(ip, 1, ucp, 0))) {
1181 EXT2_VFREE(tvp, ip->i_number, mode);
1188 ip->i_uid = cnp->cn_cred->cr_uid;
1190 if ((error = ext2_getinoquota(ip)) ||
1191 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
1192 EXT2_VFREE(tvp, ip->i_number, mode);
1198 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
1200 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
1202 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
1203 priv_check_cred(cnp->cn_cred, PRIV_VFS_SETGID, 0))
1204 ip->i_mode &= ~ISGID;
1206 if (cnp->cn_flags & CNP_ISWHITEOUT)
1207 ip->i_flags |= UF_OPAQUE;
1210 * Regular files and directories need VM objects. Softlinks do
1211 * not (not immediately anyway).
1213 if (tvp->v_type == VREG || tvp->v_type == VDIR)
1217 * Make sure inode goes to disk before directory entry.
1219 error = EXT2_UPDATE(tvp, 1);
1222 error = ext2_direnter(ip, dvp, cnp);
1231 * Write error occurred trying to update the inode
1232 * or the directory so must deallocate the inode.
1235 ip->i_flag |= IN_CHANGE;
1243 * XXX By default, wimp out... note that a_offset is ignored (and always
1247 ext2_getpages(struct vop_getpages_args *ap)
1249 return (vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
1254 ext2_itimes(struct vnode *vp)
1260 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
1262 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp))
1263 ip->i_flag |= IN_LAZYMOD;
1265 ip->i_flag |= IN_MODIFIED;
1266 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
1268 if (ip->i_flag & IN_ACCESS) {
1269 ip->i_atime = ts.tv_sec;
1270 ip->i_atimensec = ts.tv_nsec;
1272 if (ip->i_flag & IN_UPDATE) {
1273 ip->i_mtime = ts.tv_sec;
1274 ip->i_mtimensec = ts.tv_nsec;
1277 if (ip->i_flag & IN_CHANGE) {
1278 ip->i_ctime = ts.tv_sec;
1279 ip->i_ctimensec = ts.tv_nsec;
1282 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
1290 * ext2_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
1291 * struct file *a_fp)
1296 ext2_open(struct vop_open_args *ap)
1298 struct vnode *vp = ap->a_vp;
1301 * Files marked append-only must be opened for appending.
1303 if ((VTOI(vp)->i_flags & APPEND) &&
1304 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) {
1307 return (vop_stdopen(ap));
1313 * Update the times on the inode.
1315 * ext2_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1320 ext2_close(struct vop_close_args *ap)
1322 struct vnode *vp = ap->a_vp;
1324 if (vp->v_sysref.refcnt > 1)
1326 return (vop_stdclose(ap));
1330 * ext2_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
1334 ext2_access(struct vop_access_args *ap)
1336 struct vnode *vp = ap->a_vp;
1337 struct inode *ip = VTOI(vp);
1338 struct ucred *cred = ap->a_cred;
1339 mode_t mask, mode = ap->a_mode;
1347 * Disallow write attempts on read-only filesystems;
1348 * unless the file is a socket, fifo, or a block or
1349 * character device resident on the filesystem.
1351 if (mode & VWRITE) {
1352 switch (vp->v_type) {
1356 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1359 if ((error = ext2_getinoquota(ip)) != 0)
1368 /* If immutable bit set, nobody gets to write it. */
1369 if ((mode & VWRITE) && (ip->i_flags & IMMUTABLE))
1372 /* Otherwise, user id 0 always gets access. */
1373 if (cred->cr_uid == 0)
1378 /* Otherwise, check the owner. */
1379 if (cred->cr_uid == ip->i_uid) {
1386 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1389 /* Otherwise, check the groups. */
1390 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
1391 if (ip->i_gid == *gp) {
1398 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1401 /* Otherwise, check everyone else. */
1408 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1412 * ext2_getattr(struct vnode *a_vp, struct vattr *a_vap)
1417 ext2_getattr(struct vop_getattr_args *ap)
1419 struct vnode *vp = ap->a_vp;
1420 struct inode *ip = VTOI(vp);
1421 struct vattr *vap = ap->a_vap;
1425 * Copy from inode table
1427 vap->va_fsid = dev2udev(ip->i_dev);
1428 vap->va_fileid = ip->i_number;
1429 vap->va_mode = ip->i_mode & ~IFMT;
1430 vap->va_nlink = VFSTOEXT2(vp->v_mount)->um_i_effnlink_valid ?
1431 ip->i_effnlink : ip->i_nlink;
1432 vap->va_uid = ip->i_uid;
1433 vap->va_gid = ip->i_gid;
1434 vap->va_rmajor = umajor(ip->i_rdev);
1435 vap->va_rminor = uminor(ip->i_rdev);
1436 vap->va_size = ip->i_din.di_size;
1437 vap->va_atime.tv_sec = ip->i_atime;
1438 vap->va_atime.tv_nsec = ip->i_atimensec;
1439 vap->va_mtime.tv_sec = ip->i_mtime;
1440 vap->va_mtime.tv_nsec = ip->i_mtimensec;
1441 vap->va_ctime.tv_sec = ip->i_ctime;
1442 vap->va_ctime.tv_nsec = ip->i_ctimensec;
1443 vap->va_flags = ip->i_flags;
1444 vap->va_gen = ip->i_gen;
1445 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
1446 vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
1447 vap->va_type = IFTOVT(ip->i_mode);
1448 vap->va_filerev = ip->i_modrev;
1453 * Set attribute vnode op. called from several syscalls
1455 * ext2_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
1459 ext2_setattr(struct vop_setattr_args *ap)
1461 struct vattr *vap = ap->a_vap;
1462 struct vnode *vp = ap->a_vp;
1463 struct inode *ip = VTOI(vp);
1464 struct ucred *cred = ap->a_cred;
1468 * Check for unsettable attributes.
1470 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
1471 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
1472 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
1473 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
1476 if (vap->va_flags != VNOVAL) {
1477 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1479 if (cred->cr_uid != ip->i_uid &&
1480 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)))
1483 * Note that a root chflags becomes a user chflags when
1484 * we are jailed, unless the jail.chflags_allowed sysctl
1487 if (cred->cr_uid == 0 &&
1488 (!jailed(cred) || jail_chflags_allowed)) {
1490 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) &&
1493 ip->i_flags = vap->va_flags;
1496 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
1497 (vap->va_flags & UF_SETTABLE) != vap->va_flags)
1499 ip->i_flags &= SF_SETTABLE;
1500 ip->i_flags |= (vap->va_flags & UF_SETTABLE);
1502 ip->i_flag |= IN_CHANGE;
1503 if (vap->va_flags & (IMMUTABLE | APPEND))
1506 if (ip->i_flags & (IMMUTABLE | APPEND))
1509 * Go through the fields and update iff not VNOVAL.
1511 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
1512 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1514 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred)) != 0)
1517 if (vap->va_size != VNOVAL) {
1519 * Disallow write attempts on read-only filesystems;
1520 * unless the file is a socket, fifo, or a block or
1521 * character device resident on the filesystem.
1523 switch (vp->v_type) {
1528 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1534 if ((error = EXT2_TRUNCATE(vp, vap->va_size, 0, cred)) != 0)
1538 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
1539 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1541 if (cred->cr_uid != ip->i_uid &&
1542 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) &&
1543 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1544 (error = VOP_ACCESS(vp, VWRITE, cred))))
1546 if (vap->va_atime.tv_sec != VNOVAL)
1547 ip->i_flag |= IN_ACCESS;
1548 if (vap->va_mtime.tv_sec != VNOVAL)
1549 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1551 if (vap->va_atime.tv_sec != VNOVAL) {
1552 ip->i_atime = vap->va_atime.tv_sec;
1553 ip->i_atimensec = vap->va_atime.tv_nsec;
1555 if (vap->va_mtime.tv_sec != VNOVAL) {
1556 ip->i_mtime = vap->va_mtime.tv_sec;
1557 ip->i_mtimensec = vap->va_mtime.tv_nsec;
1559 error = EXT2_UPDATE(vp, 0);
1564 if (vap->va_mode != (mode_t)VNOVAL) {
1565 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1567 error = ext2_chmod(vp, (int)vap->va_mode, cred);
1569 VN_KNOTE(vp, NOTE_ATTRIB);
1574 * Change the mode on a file.
1575 * Inode must be locked before calling.
1578 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred)
1580 struct inode *ip = VTOI(vp);
1583 if (cred->cr_uid != ip->i_uid) {
1584 error = priv_check_cred(cred, PRIV_VFS_CHMOD, 0);
1589 if (vp->v_type != VDIR && (mode & S_ISTXT))
1591 if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
1594 ip->i_mode &= ~ALLPERMS;
1595 ip->i_mode |= (mode & ALLPERMS);
1596 ip->i_flag |= IN_CHANGE;
1601 * Perform chown operation on inode ip;
1602 * inode must be locked prior to call.
1605 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred)
1607 struct inode *ip = VTOI(vp);
1616 if (uid == (uid_t)VNOVAL)
1618 if (gid == (gid_t)VNOVAL)
1621 * If we don't own the file, are trying to change the owner
1622 * of the file, or are not a member of the target group,
1623 * the caller must be superuser or the call fails.
1625 if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
1626 (gid != ip->i_gid && !(cred->cr_gid == gid ||
1627 groupmember((gid_t)gid, cred)))) &&
1628 (error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0)))
1633 if ((error = ext2_getinoquota(ip)) != 0)
1636 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1637 ip->i_dquot[USRQUOTA] = NODQUOT;
1640 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1641 ip->i_dquot[GRPQUOTA] = NODQUOT;
1643 change = ip->i_blocks;
1644 (void) ext2_chkdq(ip, -change, cred, CHOWN);
1645 (void) ext2_chkiq(ip, -1, cred, CHOWN);
1646 for (i = 0; i < MAXQUOTAS; i++) {
1647 ext2_dqrele(vp, ip->i_dquot[i]);
1648 ip->i_dquot[i] = NODQUOT;
1654 if ((error = ext2_getinoquota(ip)) == 0) {
1656 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1657 ip->i_dquot[USRQUOTA] = NODQUOT;
1660 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1661 ip->i_dquot[GRPQUOTA] = NODQUOT;
1663 if ((error = ext2_chkdq(ip, change, cred, CHOWN)) == 0) {
1664 if ((error = ext2_chkiq(ip, 1, cred, CHOWN)) == 0)
1667 (void)ext2_chkdq(ip, -change, cred, CHOWN|FORCE);
1669 for (i = 0; i < MAXQUOTAS; i++) {
1670 ext2_dqrele(vp, ip->i_dquot[i]);
1671 ip->i_dquot[i] = NODQUOT;
1676 if (ext2_getinoquota(ip) == 0) {
1678 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1679 ip->i_dquot[USRQUOTA] = NODQUOT;
1682 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1683 ip->i_dquot[GRPQUOTA] = NODQUOT;
1685 (void) ext2_chkdq(ip, change, cred, FORCE|CHOWN);
1686 (void) ext2_chkiq(ip, 1, cred, FORCE|CHOWN);
1687 (void) ext2_getinoquota(ip);
1691 if (ext2_getinoquota(ip))
1692 panic("ext2_chown: lost quota");
1694 ip->i_flag |= IN_CHANGE;
1695 if (cred->cr_uid != 0 && (ouid != uid || ogid != gid))
1696 ip->i_mode &= ~(ISUID | ISGID);
1703 * NB Currently unsupported.
1705 * ext2_mmap(struct vnode *a_vp, int a_fflags, struct ucred *a_cred)
1710 ext2_mmap(struct vop_mmap_args *ap)
1716 * whiteout vnode call
1718 * ext2_whiteout(struct vnode *a_dvp, struct componentname *a_cnp, int a_flags)
1722 ext2_whiteout(struct vop_old_whiteout_args *ap)
1724 return (EOPNOTSUPP);
1728 * Return target name of a symbolic link
1730 * ext2_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred)
1734 ext2_readlink(struct vop_readlink_args *ap)
1736 struct vnode *vp = ap->a_vp;
1737 struct inode *ip = VTOI(vp);
1741 if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
1742 (ip->i_din.di_blocks == 0)) { /* XXX - for old fastlink support */
1743 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
1746 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
1750 * Calculate the logical to physical mapping if not done already,
1751 * then call the device strategy routine.
1753 * In order to be able to swap to a file, the VOP_BMAP operation may not
1754 * deadlock on memory. See ext2_bmap() for details.
1756 * ext2_strategy(struct vnode *a_vp, struct bio *a_bio)
1760 ext2_strategy(struct vop_strategy_args *ap)
1762 struct bio *bio = ap->a_bio;
1764 struct buf *bp = bio->bio_buf;
1765 struct vnode *vp = ap->a_vp;
1770 if (vp->v_type == VBLK || vp->v_type == VCHR)
1771 panic("ext2_strategy: spec");
1772 nbio = push_bio(bio);
1773 if (nbio->bio_offset == NOOFFSET) {
1774 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
1775 NULL, NULL, bp->b_cmd);
1777 bp->b_error = error;
1778 bp->b_flags |= B_ERROR;
1779 /* I/O was never started on nbio, must biodone(bio) */
1783 if (nbio->bio_offset == NOOFFSET)
1786 if (nbio->bio_offset == NOOFFSET) {
1787 /* I/O was never started on nbio, must biodone(bio) */
1791 vn_strategy(ip->i_devvp, nbio);
1796 * Print out the contents of an inode.
1798 * ext2_print(struct vnode *a_vp)
1802 ext2_print(struct vop_print_args *ap)
1804 struct vnode *vp = ap->a_vp;
1805 struct inode *ip = VTOI(vp);
1807 kprintf("tag VT_EXT2FS, ino %lu, on dev %s (%d, %d)",
1808 (u_long)ip->i_number, devtoname(ip->i_dev), major(ip->i_dev),
1810 if (vp->v_type == VFIFO)
1812 lockmgr_printinfo(&vp->v_lock);
1818 * Read wrapper for special devices.
1820 * ext2spec_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1821 * struct ucred *a_cred)
1825 ext2spec_read(struct vop_read_args *ap)
1832 resid = uio->uio_resid;
1833 error = VOCALL(&spec_vnode_vops, &ap->a_head);
1835 * The inode may have been revoked during the call, so it must not
1836 * be accessed blindly here or in the other wrapper functions.
1838 ip = VTOI(ap->a_vp);
1839 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1840 ip->i_flag |= IN_ACCESS;
1845 * Write wrapper for special devices.
1847 * ext2spec_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1848 * struct ucred *a_cred)
1852 ext2spec_write(struct vop_write_args *ap)
1859 resid = uio->uio_resid;
1860 error = VOCALL(&spec_vnode_vops, &ap->a_head);
1861 ip = VTOI(ap->a_vp);
1862 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1863 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1868 * Close wrapper for special devices.
1870 * Update the times on the inode then do device close.
1872 * ext2spec_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1876 ext2spec_close(struct vop_close_args *ap)
1878 struct vnode *vp = ap->a_vp;
1880 if (vp->v_sysref.refcnt > 1)
1882 return (VOCALL(&spec_vnode_vops, &ap->a_head));
1886 * Read wrapper for fifos.
1888 * ext2fifo_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1889 * struct ucred *a_cred)
1893 ext2fifo_read(struct vop_read_args *ap)
1900 resid = uio->uio_resid;
1901 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1902 ip = VTOI(ap->a_vp);
1903 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL &&
1904 (uio->uio_resid != resid || (error == 0 && resid != 0)))
1905 VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
1910 * Write wrapper for fifos.
1912 * ext2fifo_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1913 * struct ucred *a_cred)
1917 ext2fifo_write(struct vop_write_args *ap)
1924 resid = uio->uio_resid;
1925 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1926 ip = VTOI(ap->a_vp);
1927 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1928 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1933 * Close wrapper for fifos.
1935 * Update the times on the inode then do device close.
1937 * ext2fifo_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1941 ext2fifo_close(struct vop_close_args *ap)
1943 struct vnode *vp = ap->a_vp;
1945 if (vp->v_sysref.refcnt > 1)
1947 return (VOCALL(&fifo_vnode_vops, &ap->a_head));
1951 * Kqfilter wrapper for fifos.
1953 * Fall through to ext2 kqfilter routines if needed
1957 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
1961 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1963 error = ext2_kqfilter(ap);
1968 * Return POSIX pathconf information applicable to ext2 filesystems.
1970 * ext2_pathconf(struct vnode *a_vp, int a_name, int *a_retval)
1974 ext2_pathconf(struct vop_pathconf_args *ap)
1976 switch (ap->a_name) {
1978 *ap->a_retval = LINK_MAX;
1981 *ap->a_retval = NAME_MAX;
1984 *ap->a_retval = PATH_MAX;
1987 *ap->a_retval = PIPE_BUF;
1989 case _PC_CHOWN_RESTRICTED:
2002 * Advisory record locking support
2004 * ext2_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, struct flock *a_fl,
2009 ext2_advlock(struct vop_advlock_args *ap)
2011 struct inode *ip = VTOI(ap->a_vp);
2013 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size));
2017 * Initialize the vnode associated with a new inode, handle aliased
2021 ext2_vinit(struct mount *mntp, struct vnode **vpp)
2030 switch(vp->v_type = IFTOVT(ip->i_mode)) {
2033 vp->v_ops = &mntp->mnt_vn_spec_ops;
2034 addaliasu(vp, umajor(ip->i_rdev), uminor(ip->i_rdev));
2037 vp->v_ops = &mntp->mnt_vn_fifo_ops;
2041 vinitvmio(vp, ip->i_size);
2044 if ((ip->i_size >= vp->v_mount->mnt_maxsymlinklen) &&
2045 ip->i_din.di_blocks != 0
2047 vinitvmio(vp, ip->i_size);
2055 if (ip->i_number == ROOTINO)
2056 vp->v_flag |= VROOT;
2058 * Initialize modrev times
2060 getmicrouptime(&tv);
2061 SETHIGH(ip->i_modrev, tv.tv_sec);
2062 SETLOW(ip->i_modrev, tv.tv_usec * 4294);
2067 static struct filterops ext2read_filtops =
2068 { 1, NULL, filt_ext2detach, filt_ext2read };
2069 static struct filterops ext2write_filtops =
2070 { 1, NULL, filt_ext2detach, filt_ext2write };
2071 static struct filterops ext2vnode_filtops =
2072 { 1, NULL, filt_ext2detach, filt_ext2vnode };
2075 * ext2_kqfilter(struct vnode *a_vp, struct knote *a_kn)
2078 ext2_kqfilter(struct vop_kqfilter_args *ap)
2080 struct vnode *vp = ap->a_vp;
2081 struct knote *kn = ap->a_kn;
2084 switch (kn->kn_filter) {
2086 kn->kn_fop = &ext2read_filtops;
2089 kn->kn_fop = &ext2write_filtops;
2092 kn->kn_fop = &ext2vnode_filtops;
2098 kn->kn_hook = (caddr_t)vp;
2100 lwkt_gettoken(&ilock, &vp->v_token);
2101 SLIST_INSERT_HEAD(&vp->v_pollinfo.vpi_selinfo.si_note, kn, kn_selnext);
2102 lwkt_reltoken(&ilock);
2108 filt_ext2detach(struct knote *kn)
2110 struct vnode *vp = (struct vnode *)kn->kn_hook;
2113 lwkt_gettoken(&ilock, &vp->v_token);
2114 SLIST_REMOVE(&vp->v_pollinfo.vpi_selinfo.si_note,
2115 kn, knote, kn_selnext);
2116 lwkt_reltoken(&ilock);
2121 filt_ext2read(struct knote *kn, long hint)
2123 struct vnode *vp = (struct vnode *)kn->kn_hook;
2124 struct inode *ip = VTOI(vp);
2127 * filesystem is gone, so set the EOF flag and schedule
2128 * the knote for deletion.
2130 if (hint == NOTE_REVOKE) {
2131 kn->kn_flags |= (EV_EOF | EV_ONESHOT);
2135 kn->kn_data = ip->i_size - kn->kn_fp->f_offset;
2136 return (kn->kn_data != 0);
2141 filt_ext2write(struct knote *kn, long hint)
2144 * filesystem is gone, so set the EOF flag and schedule
2145 * the knote for deletion.
2147 if (hint == NOTE_REVOKE)
2148 kn->kn_flags |= (EV_EOF | EV_ONESHOT);
2155 filt_ext2vnode(struct knote *kn, long hint)
2157 if (kn->kn_sfflags & hint)
2158 kn->kn_fflags |= hint;
2159 if (hint == NOTE_REVOKE) {
2160 kn->kn_flags |= EV_EOF;
2163 return (kn->kn_fflags != 0);
2166 struct vop_ops ext2_vnode_vops = {
2167 .vop_default = vop_defaultop,
2168 .vop_fsync = ext2_fsync,
2169 .vop_read = ext2_read,
2170 .vop_reallocblks = ext2_reallocblks,
2171 .vop_write = ext2_write,
2172 .vop_access = ext2_access,
2173 .vop_advlock = ext2_advlock,
2174 .vop_bmap = ext2_bmap,
2175 .vop_old_lookup = ext2_lookup,
2176 .vop_close = ext2_close,
2177 .vop_old_create = ext2_create,
2178 .vop_getattr = ext2_getattr,
2179 .vop_inactive = ext2_inactive,
2180 .vop_old_link = ext2_link,
2181 .vop_old_mkdir = ext2_mkdir,
2182 .vop_old_mknod = ext2_mknod,
2183 .vop_mmap = ext2_mmap,
2184 .vop_open = ext2_open,
2185 .vop_pathconf = ext2_pathconf,
2186 .vop_poll = vop_stdpoll,
2187 .vop_kqfilter = ext2_kqfilter,
2188 .vop_print = ext2_print,
2189 .vop_readdir = ext2_readdir,
2190 .vop_readlink = ext2_readlink,
2191 .vop_reclaim = ext2_reclaim,
2192 .vop_old_remove = ext2_remove,
2193 .vop_old_rename = ext2_rename,
2194 .vop_old_rmdir = ext2_rmdir,
2195 .vop_setattr = ext2_setattr,
2196 .vop_strategy = ext2_strategy,
2197 .vop_old_symlink = ext2_symlink,
2198 .vop_old_whiteout = ext2_whiteout,
2199 .vop_getpages = ext2_getpages,
2200 .vop_putpages = vop_stdputpages
2203 struct vop_ops ext2_spec_vops = {
2204 .vop_default = ext2_vnoperatespec,
2205 .vop_fsync = ext2_fsync,
2206 .vop_access = ext2_access,
2207 .vop_close = ext2spec_close,
2208 .vop_getattr = ext2_getattr,
2209 .vop_inactive = ext2_inactive,
2210 .vop_print = ext2_print,
2211 .vop_read = ext2spec_read,
2212 .vop_reclaim = ext2_reclaim,
2213 .vop_setattr = ext2_setattr,
2214 .vop_write = ext2spec_write
2217 struct vop_ops ext2_fifo_vops = {
2218 .vop_default = ext2_vnoperatefifo,
2219 .vop_fsync = ext2_fsync,
2220 .vop_access = ext2_access,
2221 .vop_close = ext2fifo_close,
2222 .vop_getattr = ext2_getattr,
2223 .vop_inactive = ext2_inactive,
2224 .vop_kqfilter = ext2fifo_kqfilter,
2225 .vop_print = ext2_print,
2226 .vop_read = ext2fifo_read,
2227 .vop_reclaim = ext2_reclaim,
2228 .vop_setattr = ext2_setattr,
2229 .vop_write = ext2fifo_write
2232 VNODEOP_SET(ext2_vnode_vops);
2233 VNODEOP_SET(ext2_spec_vops);
2234 VNODEOP_SET(ext2_fifo_vops);
2240 ext2_vnoperate(struct vop_generic_args *ap)
2242 return (VOCALL(&ext2_vnode_vops, ap));
2246 * ext2_vnoperatefifo()
2249 ext2_vnoperatefifo(struct vop_generic_args *ap)
2251 return (VOCALL(&ext2_fifo_vops, ap));
2255 * ext2_vnoperatespec()
2258 ext2_vnoperatespec(struct vop_generic_args *ap)
2260 return (VOCALL(&ext2_spec_vops, ap));