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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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 1.42 2007/08/28 01:04:32 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>
62 #include <sys/mount.h>
64 #include <sys/vnode.h>
65 #include <sys/dirent.h>
66 #include <sys/lockf.h>
67 #include <sys/event.h>
71 #include <sys/namei.h>
72 #include <sys/signalvar.h>
73 #include <sys/unistd.h>
76 #include <vm/vm_extern.h>
77 #include <vm/vm_zone.h>
78 #include <vm/vnode_pager.h>
81 #include <sys/thread2.h>
83 #include <vfs/fifofs/fifo.h>
88 #include "ext2mount.h"
89 #include "ext2_fs_sb.h"
91 #include "ext2_extern.h"
94 static int ext2_access (struct vop_access_args *);
95 static int ext2_advlock (struct vop_advlock_args *);
96 static int ext2_chmod (struct vnode *, int, struct ucred *);
97 static int ext2_chown (struct vnode *, uid_t, gid_t, struct ucred *);
98 static int ext2_close (struct vop_close_args *);
99 static int ext2_getattr (struct vop_getattr_args *);
100 static int ext2_makeinode (int mode, struct vnode *, struct vnode **, struct componentname *);
101 static int ext2_mmap (struct vop_mmap_args *);
102 static int ext2_open (struct vop_open_args *);
103 static int ext2_pathconf (struct vop_pathconf_args *);
104 static int ext2_print (struct vop_print_args *);
105 static int ext2_readlink (struct vop_readlink_args *);
106 static int ext2_setattr (struct vop_setattr_args *);
107 static int ext2_strategy (struct vop_strategy_args *);
108 static int ext2_whiteout (struct vop_old_whiteout_args *);
109 static int filt_ext2read (struct knote *kn, long hint);
110 static int filt_ext2write (struct knote *kn, long hint);
111 static int filt_ext2vnode (struct knote *kn, long hint);
112 static void filt_ext2detach (struct knote *kn);
113 static int ext2_kqfilter (struct vop_kqfilter_args *ap);
114 static int ext2spec_close (struct vop_close_args *);
115 static int ext2spec_read (struct vop_read_args *);
116 static int ext2spec_write (struct vop_write_args *);
117 static int ext2fifo_close (struct vop_close_args *);
118 static int ext2fifo_kqfilter (struct vop_kqfilter_args *);
119 static int ext2fifo_read (struct vop_read_args *);
120 static int ext2fifo_write (struct vop_write_args *);
122 static int ext2_fsync (struct vop_fsync_args *);
123 static int ext2_read (struct vop_read_args *);
124 static int ext2_write (struct vop_write_args *);
125 static int ext2_remove (struct vop_old_remove_args *);
126 static int ext2_link (struct vop_old_link_args *);
127 static int ext2_rename (struct vop_old_rename_args *);
128 static int ext2_mkdir (struct vop_old_mkdir_args *);
129 static int ext2_rmdir (struct vop_old_rmdir_args *);
130 static int ext2_create (struct vop_old_create_args *);
131 static int ext2_mknod (struct vop_old_mknod_args *);
132 static int ext2_symlink (struct vop_old_symlink_args *);
133 static int ext2_getpages (struct vop_getpages_args *);
135 #include "ext2_readwrite.c"
141 #define SETHIGH(q, h) { \
144 tmp.val[_QUAD_HIGHWORD] = (h); \
147 #define SETLOW(q, l) { \
150 tmp.val[_QUAD_LOWWORD] = (l); \
153 #define VN_KNOTE(vp, b) \
154 KNOTE(&vp->v_pollinfo.vpi_selinfo.si_note, (b))
156 #define OFSFMT(vp) ((vp)->v_mount->mnt_maxsymlinklen <= 0)
159 * A virgin directory (no blushing please).
160 * Note that the type and namlen fields are reversed relative to ufs.
161 * Also, we don't use `struct odirtemplate', since it would just cause
162 * endianness problems.
164 static struct dirtemplate ext2_mastertemplate = {
165 0, 12, 1, EXT2_FT_DIR, ".",
166 0, DIRBLKSIZ - 12, 2, EXT2_FT_DIR, ".."
168 static struct dirtemplate ext2_omastertemplate = {
169 0, 12, 1, EXT2_FT_UNKNOWN, ".",
170 0, DIRBLKSIZ - 12, 2, EXT2_FT_UNKNOWN, ".."
174 * Create a regular file
176 * ext2_create(struct vnode *a_dvp, struct vnode **a_vpp,
177 * struct componentname *a_cnp, struct vattr *a_vap)
180 ext2_create(struct vop_old_create_args *ap)
185 ext2_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
186 ap->a_dvp, ap->a_vpp, ap->a_cnp);
193 * Synch an open file.
195 * ext2_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
200 static int ext2_fsync_bp(struct buf *bp, void *data);
202 struct ext2_fsync_bp_info {
208 ext2_fsync(struct vop_fsync_args *ap)
210 struct ext2_fsync_bp_info info;
211 struct vnode *vp = ap->a_vp;
215 * XXX why is all this fs specific?
219 * Flush all dirty buffers associated with a vnode.
221 ext2_discard_prealloc(VTOI(vp));
226 info.waitfor = ap->a_waitfor;
227 count = RB_SCAN(buf_rb_tree, &vp->v_rbdirty_tree, NULL,
228 ext2_fsync_bp, &info);
232 if (ap->a_waitfor == MNT_WAIT) {
233 while (vp->v_track_write.bk_active) {
234 vp->v_track_write.bk_waitflag = 1;
235 tsleep(&vp->v_track_write, 0, "e2fsyn", 0);
238 if (!RB_EMPTY(&vp->v_rbdirty_tree)) {
239 vprint("ext2_fsync: dirty", vp);
245 return (EXT2_UPDATE(ap->a_vp, ap->a_waitfor == MNT_WAIT));
249 ext2_fsync_bp(struct buf *bp, void *data)
251 struct ext2_fsync_bp_info *info = data;
253 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT))
255 if ((bp->b_flags & B_DELWRI) == 0)
256 panic("ext2_fsync: not dirty");
261 * Wait for I/O associated with indirect blocks to complete,
262 * since there is no way to quickly wait for them below.
264 if (bp->b_vp == info->vp || info->waitfor == MNT_NOWAIT)
275 * ext2_mknod(struct vnode *a_dvp, struct vnode **a_vpp,
276 * struct componentname *a_cnp, struct vattr *a_vap)
280 ext2_mknod(struct vop_old_mknod_args *ap)
282 struct vattr *vap = ap->a_vap;
283 struct vnode **vpp = ap->a_vpp;
288 if (vap->va_rmajor != VNOVAL &&
289 makeudev(vap->va_rmajor, vap->va_rminor) == NOUDEV) {
293 error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
294 ap->a_dvp, vpp, ap->a_cnp);
298 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
299 if (vap->va_rmajor != VNOVAL) {
301 * Want to be able to use this to make badblock
302 * inodes, so don't truncate the dev number.
304 ip->i_rdev = makeudev(vap->va_rmajor, vap->va_rminor);
307 * Remove inode, then reload it through VFS_VGET so it is
308 * checked to see if it is an alias of an existing entry in
311 (*vpp)->v_type = VNON;
312 ino = ip->i_number; /* Save this before vgone() invalidates ip. */
313 vgone_vxlocked(*vpp);
315 error = VFS_VGET(ap->a_dvp->v_mount, ino, vpp);
324 * ext2_remove(struct vnode *a_dvp, struct vnode *a_vp,
325 * struct componentname *a_cnp)
328 ext2_remove(struct vop_old_remove_args *ap)
331 struct vnode *vp = ap->a_vp;
332 struct vnode *dvp = ap->a_dvp;
336 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
337 (VTOI(dvp)->i_flags & APPEND)) {
341 error = ext2_dirremove(dvp, ap->a_cnp);
344 ip->i_flag |= IN_CHANGE;
353 * ext2_link(struct vnode *a_tdvp, struct vnode *a_vp,
354 * struct componentname *a_cnp)
357 ext2_link(struct vop_old_link_args *ap)
359 struct vnode *vp = ap->a_vp;
360 struct vnode *tdvp = ap->a_tdvp;
361 struct componentname *cnp = ap->a_cnp;
365 if (tdvp->v_mount != vp->v_mount) {
369 if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE))) {
373 if ((nlink_t)ip->i_nlink >= LINK_MAX) {
377 if (ip->i_flags & (IMMUTABLE | APPEND)) {
382 ip->i_flag |= IN_CHANGE;
383 error = EXT2_UPDATE(vp, 1);
385 error = ext2_direnter(ip, tdvp, cnp);
388 ip->i_flag |= IN_CHANGE;
398 * Rename system call. fdvp, fvp are ref'd. tvp, tdvp are ref'd and locked.
399 * all vp's are released and must be in an unlocked state on return.
401 * ext2_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
402 * struct componentname *a_fcnp, struct vnode *a_tdvp,
403 * struct vnode *a_tvp, struct componentname *a_tcnp)
406 ext2_rename(struct vop_old_rename_args *ap)
408 struct vnode *tvp = ap->a_tvp;
409 struct vnode *tdvp = ap->a_tdvp;
410 struct vnode *fvp = ap->a_fvp;
411 struct vnode *fdvp = ap->a_fdvp;
412 struct componentname *tcnp = ap->a_tcnp;
413 struct componentname *fcnp = ap->a_fcnp;
414 struct inode *ip, *xp, *dp;
415 struct dirtemplate dirbuf;
416 int doingdirectory = 0, oldparent = 0, newparent = 0;
421 * Check for cross-device rename.
423 if ((fvp->v_mount != tdvp->v_mount) ||
424 (tvp && (fvp->v_mount != tvp->v_mount)) ||
439 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
440 (VTOI(tdvp)->i_flags & APPEND))) {
446 * Renaming a file to itself has no effect. The upper layers should
447 * not call us in that case. Temporarily just warn if they do.
454 if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
458 * fvp, tvp, tdvp locked. fdvp not locked but note that fdvp may
463 if (ip->i_nlink >= LINK_MAX) {
468 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
469 || (dp->i_flags & APPEND)) {
474 if ((ip->i_mode & IFMT) == IFDIR) {
476 * Avoid ".", "..", and aliases of "." for obvious reasons.
478 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
479 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & CNP_ISDOTDOT ||
480 (ip->i_flag & IN_RENAME)) {
485 ip->i_flag |= IN_RENAME;
486 oldparent = dp->i_number;
491 * tvp is non-NULL if the target exists. fvp is still locked but
492 * we will unlock it soon. The 'bad' goto target requires dp and
493 * xp to be correctly assigned.
502 * 1) Bump link count while we're moving stuff
503 * around. If we crash somewhere before
504 * completing our work, the link count
505 * may be wrong, but correctable.
508 ip->i_flag |= IN_CHANGE;
509 if ((error = EXT2_UPDATE(fvp, 1)) != 0) {
515 * If ".." must be changed (ie the directory gets a new
516 * parent) then the source directory must not be in the
517 * directory heirarchy above the target, as this would
518 * orphan everything below the source directory. Also
519 * the user must have write permission in the source so
520 * as to be able to change "..". We must repeat the call
521 * to namei, as the parent directory is unlocked by the
522 * call to checkpath().
524 error = VOP_ACCESS(fvp, VWRITE, tcnp->cn_cred);
528 * tvp (if not NULL) and tdvp are locked. fvp and fdvp are not.
529 * dp and xp are set according to tdvp and tvp.
531 if (oldparent != dp->i_number)
532 newparent = dp->i_number;
533 if (doingdirectory && newparent) {
534 if (error) /* write access check above */
538 * Prepare for relookup, get rid of xp
546 * checkpath vput()'s tdvp (VTOI(dp)) on return no matter what,
547 * get an extra ref so we wind up with just an unlocked, ref'd
548 * tdvp. The 'out' target skips xp and tdvp cleanups. Our
549 * tdvp is now unlocked so we have to clean it up ourselves.
552 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
553 tcnp->cn_flags |= CNP_PDIRUNLOCK;
559 * relookup no longer messes with the ref count. An unlocked
560 * tdvp must be passed and if no error occurs a locked tdvp
561 * will be returned. We have to use the out target again.
563 error = relookup(tdvp, &tvp, tcnp);
565 if (tcnp->cn_flags & CNP_PDIRUNLOCK)
573 * tdvp is locked at this point. in the RENAME case tvp may
574 * be NULL without an error, assign xp accordingly. The
575 * 'bad' target can be used again after this.
582 * 2) If target doesn't exist, link the target
583 * to the source and unlink the source.
584 * Otherwise, rewrite the target directory
585 * entry to reference the source inode and
586 * expunge the original entry's existence.
588 * tdvp and tvp are cleaned up by this code. tvp is only good if
592 if (dp->i_dev != ip->i_dev)
593 panic("ext2_rename: EXDEV");
595 * Account for ".." in new directory.
596 * When source and destination have the same
597 * parent we don't fool with the link count.
599 if (doingdirectory && newparent) {
600 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
605 dp->i_flag |= IN_CHANGE;
606 error = EXT2_UPDATE(tdvp, 1);
610 error = ext2_direnter(ip, tdvp, tcnp);
612 if (doingdirectory && newparent) {
614 dp->i_flag |= IN_CHANGE;
615 EXT2_UPDATE(tdvp, 1);
621 * manual cleanup, we can't use the bad or out target after
626 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
627 panic("ext2_rename: EXDEV");
629 * Short circuit rename(foo, foo).
631 if (xp->i_number == ip->i_number)
632 panic("ext2_rename: same file");
634 * If the parent directory is "sticky", then the user must
635 * own the parent directory, or the destination of the rename,
636 * otherwise the destination may not be changed (except by
637 * root). This implements append-only directories.
639 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
640 tcnp->cn_cred->cr_uid != dp->i_uid &&
641 xp->i_uid != tcnp->cn_cred->cr_uid) {
646 * Target must be empty if a directory and have no links
647 * to it. Also, ensure source and target are compatible
648 * (both directories, or both not directories).
650 if ((xp->i_mode&IFMT) == IFDIR) {
651 if (! ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
656 if (!doingdirectory) {
660 } else if (doingdirectory) {
664 error = ext2_dirrewrite(dp, ip, tcnp);
668 * If the target directory is in the same
669 * directory as the source directory,
670 * decrement the link count on the parent
671 * of the target directory.
673 if (doingdirectory && !newparent) {
675 dp->i_flag |= IN_CHANGE;
679 * manual cleanup, we can't use the bad or out target after
685 * Adjust the link count of the target to
686 * reflect the dirrewrite above. If this is
687 * a directory it is empty and there are
688 * no links to it, so we can squash the inode and
689 * any space associated with it. We disallowed
690 * renaming over top of a directory with links to
691 * it above, as the remaining link would point to
692 * a directory without "." or ".." entries.
695 if (doingdirectory) {
696 if (--xp->i_nlink != 0)
697 panic("ext2_rename: linked directory");
698 error = EXT2_TRUNCATE(tvp, (off_t)0, IO_SYNC,
701 xp->i_flag |= IN_CHANGE;
707 * tvp and tdvp have been cleaned up. The bad and out targets may
708 * not be used. fvp and fdvp are ref'd but not locked. ip
709 * still represents the old fvp and ip->i_flag may still have IN_RENAME
710 * set (if doingdirectory).
714 * 3) Unlink the source.
716 * fdvp is locked and ref'd. ap->a_fvp holds the old lookup unlocked
717 * and ref'd, fvp will hold the new lookup locked and ref'd.
719 * After the relookup ap->a_fvp must be released as part of our
720 * cleanup, not just fdvp and fvp. And, on success, fdvp and
721 * fvp will be locked so the bad and out targets cannot be used.
723 fcnp->cn_flags &= ~CNP_MODMASK;
724 fcnp->cn_flags |= CNP_LOCKPARENT;
725 KKASSERT(fcnp->cn_flags & CNP_PDIRUNLOCK);
726 error = relookup(fdvp, &fvp, fcnp);
729 * From name has disappeared.
732 panic("ext2_rename: lost dir entry");
733 /* ip->i_flag only sets IN_RENAME if doingdirectory */
735 if (fcnp->cn_flags & CNP_PDIRUNLOCK)
741 KKASSERT((fcnp->cn_flags & CNP_PDIRUNLOCK) == 0);
744 * This case shouldn't occur
748 * From name has disappeared.
751 panic("ext2_rename: lost dir entry");
752 /* ip->i_flag only sets IN_RENAME if doingdirectory */
760 * fvp and fdvp are both ref'd and locked.
766 * Ensure that the directory entry still exists and has not
767 * changed while the new name has been entered. If the source is
768 * a file then the entry may have been unlinked or renamed. In
769 * either case there is no further work to be done. If the source
770 * is a directory then it cannot have been rmdir'ed; its link
771 * count of three would cause a rmdir to fail with ENOTEMPTY.
772 * The IN_RENAME flag ensures that it cannot be moved by another
777 panic("ext2_rename: lost dir entry");
778 /* ip->i_flag only sets IN_RENAME if doingdirectory */
781 * If the source is a directory with a
782 * new parent, the link count of the old
783 * parent directory must be decremented
784 * and ".." set to point to the new parent.
786 if (doingdirectory && newparent) {
788 dp->i_flag |= IN_CHANGE;
789 error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
790 sizeof (struct dirtemplate), (off_t)0,
791 UIO_SYSSPACE, IO_NODELOCKED,
792 tcnp->cn_cred, (int *)0);
794 /* Like ext2 little-endian: */
795 namlen = dirbuf.dotdot_type;
797 dirbuf.dotdot_name[0] != '.' ||
798 dirbuf.dotdot_name[1] != '.') {
799 ext2_dirbad(xp, (doff_t)12,
800 "rename: mangled dir");
802 dirbuf.dotdot_ino = newparent;
803 vn_rdwr(UIO_WRITE, fvp,
805 sizeof (struct dirtemplate),
806 (off_t)0, UIO_SYSSPACE,
807 IO_NODELOCKED|IO_SYNC,
808 tcnp->cn_cred, (int *)0);
812 error = ext2_dirremove(fdvp, fcnp);
815 xp->i_flag |= IN_CHANGE;
817 xp->i_flag &= ~IN_RENAME;
831 ip->i_flag &= ~IN_RENAME;
832 if (vn_lock(fvp, LK_EXCLUSIVE) == 0) {
834 ip->i_flag |= IN_CHANGE;
835 ip->i_flag &= ~IN_RENAME;
846 * ext2_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
847 * struct componentname *a_cnp, struct vattr *a_vap)
850 ext2_mkdir(struct vop_old_mkdir_args *ap)
852 struct vnode *dvp = ap->a_dvp;
853 struct vattr *vap = ap->a_vap;
854 struct componentname *cnp = ap->a_cnp;
855 struct inode *ip, *dp;
857 struct dirtemplate dirtemplate, *dtp;
861 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
865 dmode = vap->va_mode & 0777;
868 * Must simulate part of ext2_makeinode here to acquire the inode,
869 * but not have it entered in the parent directory. The entry is
870 * made later after writing "." and ".." entries.
872 error = EXT2_VALLOC(dvp, dmode, cnp->cn_cred, &tvp);
876 ip->i_gid = dp->i_gid;
880 struct ucred ucred, *ucp;
884 * if we are hacking owners here, (only do this where told to)
885 * and we are not giving it TOO root, (would subvert quotas)
886 * then go ahead and give it to the other user.
887 * The new directory also inherits the SUID bit.
888 * If user's UID and dir UID are the same,
889 * 'give it away' so that the SUID is still forced on.
891 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
892 (dp->i_mode & ISUID) && dp->i_uid) {
894 ip->i_uid = dp->i_uid;
896 if (dp->i_uid != cnp->cn_cred->cr_uid) {
898 * make sure the correct user gets charged
900 * Make a dummy credential for the victim.
901 * XXX This seems to never be accessed out of
902 * our context so a stack variable is ok.
905 ucred.cr_uid = ip->i_uid;
906 ucred.cr_ngroups = 1;
907 ucred.cr_groups[0] = dp->i_gid;
912 ip->i_uid = cnp->cn_cred->cr_uid;
915 if ((error = ext2_getinoquota(ip)) ||
916 (error = ext2_chkiq(ip, 1, ucp, 0))) {
917 EXT2_VFREE(tvp, ip->i_number, dmode);
924 ip->i_uid = cnp->cn_cred->cr_uid;
926 if ((error = ext2_getinoquota(ip)) ||
927 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
928 EXT2_VFREE(tvp, ip->i_number, dmode);
934 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
936 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
938 if (cnp->cn_flags & CNP_ISWHITEOUT)
939 ip->i_flags |= UF_OPAQUE;
940 error = EXT2_UPDATE(tvp, 1);
943 * The vnode must have a VM object in order to issue buffer cache
949 * Bump link count in parent directory
950 * to reflect work done below. Should
951 * be done before reference is created
952 * so reparation is possible if we crash.
955 dp->i_flag |= IN_CHANGE;
956 error = EXT2_UPDATE(dvp, 1);
960 /* Initialize directory with "." and ".." from static template. */
961 if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs->s_es,
962 EXT2_FEATURE_INCOMPAT_FILETYPE))
963 dtp = &ext2_mastertemplate;
965 dtp = &ext2_omastertemplate;
967 dirtemplate.dot_ino = ip->i_number;
968 dirtemplate.dotdot_ino = dp->i_number;
969 /* note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE
970 * so let's just redefine it - for this function only
973 #define DIRBLKSIZ VTOI(dvp)->i_e2fs->s_blocksize
974 dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
975 error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
976 sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
977 IO_NODELOCKED|IO_SYNC, cnp->cn_cred, (int *)0);
980 dp->i_flag |= IN_CHANGE;
983 if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
984 panic("ext2_mkdir: blksize"); /* XXX should grow with balloc() */
986 ip->i_size = DIRBLKSIZ;
987 ip->i_flag |= IN_CHANGE;
990 /* Directory set up, now install its entry in the parent directory. */
991 error = ext2_direnter(ip, dvp, cnp);
994 dp->i_flag |= IN_CHANGE;
998 * No need to do an explicit VOP_TRUNCATE here, vrele will do this
999 * for us because we set the link count to 0.
1003 ip->i_flag |= IN_CHANGE;
1010 #define DIRBLKSIZ DEV_BSIZE
1014 * Rmdir system call.
1016 * ext2_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
1017 * struct componentname *a_cnp)
1020 ext2_rmdir(struct vop_old_rmdir_args *ap)
1022 struct vnode *vp = ap->a_vp;
1023 struct vnode *dvp = ap->a_dvp;
1024 struct componentname *cnp = ap->a_cnp;
1025 struct inode *ip, *dp;
1032 * Verify the directory is empty (and valid).
1033 * (Rmdir ".." won't be valid since
1034 * ".." will contain a reference to
1035 * the current directory and thus be
1039 if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
1043 if ((dp->i_flags & APPEND)
1044 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1049 * Delete reference to directory before purging
1050 * inode. If we crash in between, the directory
1051 * will be reattached to lost+found,
1053 error = ext2_dirremove(dvp, cnp);
1057 dp->i_flag |= IN_CHANGE;
1060 * Truncate inode. The only stuff left
1061 * in the directory is "." and "..". The
1062 * "." reference is inconsequential since
1063 * we're quashing it. The ".." reference
1064 * has already been adjusted above. We've
1065 * removed the "." reference and the reference
1066 * in the parent directory, but there may be
1067 * other hard links so decrement by 2 and
1068 * worry about them later.
1071 error = EXT2_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
1072 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1078 * symlink -- make a symbolic link
1080 * ext2_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
1081 * struct componentname *a_cnp, struct vattr *a_vap,
1085 ext2_symlink(struct vop_old_symlink_args *ap)
1087 struct vnode *vp, **vpp = ap->a_vpp;
1091 error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
1096 len = strlen(ap->a_target);
1097 if (len < vp->v_mount->mnt_maxsymlinklen) {
1099 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
1101 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1104 * Make sure we have a VM object in order to use
1107 if (vp->v_object == NULL)
1110 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
1111 UIO_SYSSPACE, IO_NODELOCKED,
1112 ap->a_cnp->cn_cred, (int *)0);
1122 * Allocate a new inode.
1125 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
1126 struct componentname *cnp)
1128 struct inode *ip, *pdir;
1134 if ((mode & IFMT) == 0)
1137 error = EXT2_VALLOC(dvp, mode, cnp->cn_cred, &tvp);
1142 ip->i_gid = pdir->i_gid;
1146 struct ucred ucred, *ucp;
1151 * not the owner of the directory,
1152 * and we are hacking owners here, (only do this where told to)
1153 * and we are not giving it TOO root, (would subvert quotas)
1154 * then go ahead and give it to the other user.
1155 * Note that this drops off the execute bits for security.
1157 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
1158 (pdir->i_mode & ISUID) &&
1159 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
1160 ip->i_uid = pdir->i_uid;
1164 * make sure the correct user gets charged
1166 * Quickly knock up a dummy credential for the victim.
1167 * XXX This seems to never be accessed out of our
1168 * context so a stack variable is ok.
1171 ucred.cr_uid = ip->i_uid;
1172 ucred.cr_ngroups = 1;
1173 ucred.cr_groups[0] = pdir->i_gid;
1177 ip->i_uid = cnp->cn_cred->cr_uid;
1181 if ((error = ext2_getinoquota(ip)) ||
1182 (error = ext2_chkiq(ip, 1, ucp, 0))) {
1183 EXT2_VFREE(tvp, ip->i_number, mode);
1190 ip->i_uid = cnp->cn_cred->cr_uid;
1192 if ((error = ext2_getinoquota(ip)) ||
1193 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
1194 EXT2_VFREE(tvp, ip->i_number, mode);
1200 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
1202 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
1204 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
1205 suser_cred(cnp->cn_cred, PRISON_ROOT))
1206 ip->i_mode &= ~ISGID;
1208 if (cnp->cn_flags & CNP_ISWHITEOUT)
1209 ip->i_flags |= UF_OPAQUE;
1212 * Regular files and directories need VM objects. Softlinks do
1213 * not (not immediately anyway).
1215 if (tvp->v_type == VREG || tvp->v_type == VDIR)
1219 * Make sure inode goes to disk before directory entry.
1221 error = EXT2_UPDATE(tvp, 1);
1224 error = ext2_direnter(ip, dvp, cnp);
1233 * Write error occurred trying to update the inode
1234 * or the directory so must deallocate the inode.
1237 ip->i_flag |= IN_CHANGE;
1245 * XXX By default, wimp out... note that a_offset is ignored (and always
1249 ext2_getpages(struct vop_getpages_args *ap)
1251 return (vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
1256 ext2_itimes(struct vnode *vp)
1262 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
1264 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp))
1265 ip->i_flag |= IN_LAZYMOD;
1267 ip->i_flag |= IN_MODIFIED;
1268 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
1270 if (ip->i_flag & IN_ACCESS) {
1271 ip->i_atime = ts.tv_sec;
1272 ip->i_atimensec = ts.tv_nsec;
1274 if (ip->i_flag & IN_UPDATE) {
1275 ip->i_mtime = ts.tv_sec;
1276 ip->i_mtimensec = ts.tv_nsec;
1279 if (ip->i_flag & IN_CHANGE) {
1280 ip->i_ctime = ts.tv_sec;
1281 ip->i_ctimensec = ts.tv_nsec;
1284 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
1292 * ext2_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
1293 * struct file *a_fp)
1298 ext2_open(struct vop_open_args *ap)
1300 struct vnode *vp = ap->a_vp;
1303 * Files marked append-only must be opened for appending.
1305 if ((VTOI(vp)->i_flags & APPEND) &&
1306 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) {
1309 return (vop_stdopen(ap));
1315 * Update the times on the inode.
1317 * ext2_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1322 ext2_close(struct vop_close_args *ap)
1324 struct vnode *vp = ap->a_vp;
1326 if (vp->v_sysref.refcnt > 1)
1328 return (vop_stdclose(ap));
1332 * ext2_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
1336 ext2_access(struct vop_access_args *ap)
1338 struct vnode *vp = ap->a_vp;
1339 struct inode *ip = VTOI(vp);
1340 struct ucred *cred = ap->a_cred;
1341 mode_t mask, mode = ap->a_mode;
1349 * Disallow write attempts on read-only filesystems;
1350 * unless the file is a socket, fifo, or a block or
1351 * character device resident on the filesystem.
1353 if (mode & VWRITE) {
1354 switch (vp->v_type) {
1358 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1361 if ((error = ext2_getinoquota(ip)) != 0)
1370 /* If immutable bit set, nobody gets to write it. */
1371 if ((mode & VWRITE) && (ip->i_flags & IMMUTABLE))
1374 /* Otherwise, user id 0 always gets access. */
1375 if (cred->cr_uid == 0)
1380 /* Otherwise, check the owner. */
1381 if (cred->cr_uid == ip->i_uid) {
1388 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1391 /* Otherwise, check the groups. */
1392 for (i = 0, gp = cred->cr_groups; i < cred->cr_ngroups; i++, gp++)
1393 if (ip->i_gid == *gp) {
1400 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1403 /* Otherwise, check everyone else. */
1410 return ((ip->i_mode & mask) == mask ? 0 : EACCES);
1414 * ext2_getattr(struct vnode *a_vp, struct vattr *a_vap)
1419 ext2_getattr(struct vop_getattr_args *ap)
1421 struct vnode *vp = ap->a_vp;
1422 struct inode *ip = VTOI(vp);
1423 struct vattr *vap = ap->a_vap;
1427 * Copy from inode table
1429 vap->va_fsid = dev2udev(ip->i_dev);
1430 vap->va_fileid = ip->i_number;
1431 vap->va_mode = ip->i_mode & ~IFMT;
1432 vap->va_nlink = VFSTOEXT2(vp->v_mount)->um_i_effnlink_valid ?
1433 ip->i_effnlink : ip->i_nlink;
1434 vap->va_uid = ip->i_uid;
1435 vap->va_gid = ip->i_gid;
1436 vap->va_rmajor = umajor(ip->i_rdev);
1437 vap->va_rminor = uminor(ip->i_rdev);
1438 vap->va_size = ip->i_din.di_size;
1439 vap->va_atime.tv_sec = ip->i_atime;
1440 vap->va_atime.tv_nsec = ip->i_atimensec;
1441 vap->va_mtime.tv_sec = ip->i_mtime;
1442 vap->va_mtime.tv_nsec = ip->i_mtimensec;
1443 vap->va_ctime.tv_sec = ip->i_ctime;
1444 vap->va_ctime.tv_nsec = ip->i_ctimensec;
1445 vap->va_flags = ip->i_flags;
1446 vap->va_gen = ip->i_gen;
1447 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
1448 vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
1449 vap->va_type = IFTOVT(ip->i_mode);
1450 vap->va_filerev = ip->i_modrev;
1455 * Set attribute vnode op. called from several syscalls
1457 * ext2_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
1461 ext2_setattr(struct vop_setattr_args *ap)
1463 struct vattr *vap = ap->a_vap;
1464 struct vnode *vp = ap->a_vp;
1465 struct inode *ip = VTOI(vp);
1466 struct ucred *cred = ap->a_cred;
1470 * Check for unsettable attributes.
1472 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
1473 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
1474 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
1475 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
1478 if (vap->va_flags != VNOVAL) {
1479 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1481 if (cred->cr_uid != ip->i_uid &&
1482 (error = suser_cred(cred, PRISON_ROOT)))
1485 * Note that a root chflags becomes a user chflags when
1486 * we are jailed, unless the jail.chflags_allowed sysctl
1489 if (cred->cr_uid == 0 &&
1490 (!jailed(cred) || jail_chflags_allowed)) {
1492 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) &&
1495 ip->i_flags = vap->va_flags;
1498 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
1499 (vap->va_flags & UF_SETTABLE) != vap->va_flags)
1501 ip->i_flags &= SF_SETTABLE;
1502 ip->i_flags |= (vap->va_flags & UF_SETTABLE);
1504 ip->i_flag |= IN_CHANGE;
1505 if (vap->va_flags & (IMMUTABLE | APPEND))
1508 if (ip->i_flags & (IMMUTABLE | APPEND))
1511 * Go through the fields and update iff not VNOVAL.
1513 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
1514 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1516 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred)) != 0)
1519 if (vap->va_size != VNOVAL) {
1521 * Disallow write attempts on read-only filesystems;
1522 * unless the file is a socket, fifo, or a block or
1523 * character device resident on the filesystem.
1525 switch (vp->v_type) {
1530 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1536 if ((error = EXT2_TRUNCATE(vp, vap->va_size, 0, cred)) != 0)
1540 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
1541 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1543 if (cred->cr_uid != ip->i_uid &&
1544 (error = suser_cred(cred, PRISON_ROOT)) &&
1545 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1546 (error = VOP_ACCESS(vp, VWRITE, cred))))
1548 if (vap->va_atime.tv_sec != VNOVAL)
1549 ip->i_flag |= IN_ACCESS;
1550 if (vap->va_mtime.tv_sec != VNOVAL)
1551 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1553 if (vap->va_atime.tv_sec != VNOVAL) {
1554 ip->i_atime = vap->va_atime.tv_sec;
1555 ip->i_atimensec = vap->va_atime.tv_nsec;
1557 if (vap->va_mtime.tv_sec != VNOVAL) {
1558 ip->i_mtime = vap->va_mtime.tv_sec;
1559 ip->i_mtimensec = vap->va_mtime.tv_nsec;
1561 error = EXT2_UPDATE(vp, 0);
1566 if (vap->va_mode != (mode_t)VNOVAL) {
1567 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1569 error = ext2_chmod(vp, (int)vap->va_mode, cred);
1571 VN_KNOTE(vp, NOTE_ATTRIB);
1576 * Change the mode on a file.
1577 * Inode must be locked before calling.
1580 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred)
1582 struct inode *ip = VTOI(vp);
1585 if (cred->cr_uid != ip->i_uid) {
1586 error = suser_cred(cred, PRISON_ROOT);
1591 if (vp->v_type != VDIR && (mode & S_ISTXT))
1593 if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
1596 ip->i_mode &= ~ALLPERMS;
1597 ip->i_mode |= (mode & ALLPERMS);
1598 ip->i_flag |= IN_CHANGE;
1603 * Perform chown operation on inode ip;
1604 * inode must be locked prior to call.
1607 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred)
1609 struct inode *ip = VTOI(vp);
1618 if (uid == (uid_t)VNOVAL)
1620 if (gid == (gid_t)VNOVAL)
1623 * If we don't own the file, are trying to change the owner
1624 * of the file, or are not a member of the target group,
1625 * the caller must be superuser or the call fails.
1627 if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
1628 (gid != ip->i_gid && !(cred->cr_gid == gid ||
1629 groupmember((gid_t)gid, cred)))) &&
1630 (error = suser_cred(cred, PRISON_ROOT)))
1635 if ((error = ext2_getinoquota(ip)) != 0)
1638 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1639 ip->i_dquot[USRQUOTA] = NODQUOT;
1642 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1643 ip->i_dquot[GRPQUOTA] = NODQUOT;
1645 change = ip->i_blocks;
1646 (void) ext2_chkdq(ip, -change, cred, CHOWN);
1647 (void) ext2_chkiq(ip, -1, cred, CHOWN);
1648 for (i = 0; i < MAXQUOTAS; i++) {
1649 ext2_dqrele(vp, ip->i_dquot[i]);
1650 ip->i_dquot[i] = NODQUOT;
1656 if ((error = ext2_getinoquota(ip)) == 0) {
1658 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1659 ip->i_dquot[USRQUOTA] = NODQUOT;
1662 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1663 ip->i_dquot[GRPQUOTA] = NODQUOT;
1665 if ((error = ext2_chkdq(ip, change, cred, CHOWN)) == 0) {
1666 if ((error = ext2_chkiq(ip, 1, cred, CHOWN)) == 0)
1669 (void)ext2_chkdq(ip, -change, cred, CHOWN|FORCE);
1671 for (i = 0; i < MAXQUOTAS; i++) {
1672 ext2_dqrele(vp, ip->i_dquot[i]);
1673 ip->i_dquot[i] = NODQUOT;
1678 if (ext2_getinoquota(ip) == 0) {
1680 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1681 ip->i_dquot[USRQUOTA] = NODQUOT;
1684 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1685 ip->i_dquot[GRPQUOTA] = NODQUOT;
1687 (void) ext2_chkdq(ip, change, cred, FORCE|CHOWN);
1688 (void) ext2_chkiq(ip, 1, cred, FORCE|CHOWN);
1689 (void) ext2_getinoquota(ip);
1693 if (ext2_getinoquota(ip))
1694 panic("ext2_chown: lost quota");
1696 ip->i_flag |= IN_CHANGE;
1697 if (cred->cr_uid != 0 && (ouid != uid || ogid != gid))
1698 ip->i_mode &= ~(ISUID | ISGID);
1705 * NB Currently unsupported.
1707 * ext2_mmap(struct vnode *a_vp, int a_fflags, struct ucred *a_cred)
1712 ext2_mmap(struct vop_mmap_args *ap)
1718 * whiteout vnode call
1720 * ext2_whiteout(struct vnode *a_dvp, struct componentname *a_cnp, int a_flags)
1724 ext2_whiteout(struct vop_old_whiteout_args *ap)
1726 return (EOPNOTSUPP);
1730 * Return target name of a symbolic link
1732 * ext2_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred)
1736 ext2_readlink(struct vop_readlink_args *ap)
1738 struct vnode *vp = ap->a_vp;
1739 struct inode *ip = VTOI(vp);
1743 if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
1744 (ip->i_din.di_blocks == 0)) { /* XXX - for old fastlink support */
1745 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
1748 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
1752 * Calculate the logical to physical mapping if not done already,
1753 * then call the device strategy routine.
1755 * In order to be able to swap to a file, the VOP_BMAP operation may not
1756 * deadlock on memory. See ext2_bmap() for details.
1758 * ext2_strategy(struct vnode *a_vp, struct bio *a_bio)
1762 ext2_strategy(struct vop_strategy_args *ap)
1764 struct bio *bio = ap->a_bio;
1766 struct buf *bp = bio->bio_buf;
1767 struct vnode *vp = ap->a_vp;
1772 if (vp->v_type == VBLK || vp->v_type == VCHR)
1773 panic("ext2_strategy: spec");
1774 nbio = push_bio(bio);
1775 if (nbio->bio_offset == NOOFFSET) {
1776 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
1779 bp->b_error = error;
1780 bp->b_flags |= B_ERROR;
1781 /* I/O was never started on nbio, must biodone(bio) */
1785 if (nbio->bio_offset == NOOFFSET)
1788 if (nbio->bio_offset == NOOFFSET) {
1789 /* I/O was never started on nbio, must biodone(bio) */
1793 vn_strategy(ip->i_devvp, nbio);
1798 * Print out the contents of an inode.
1800 * ext2_print(struct vnode *a_vp)
1804 ext2_print(struct vop_print_args *ap)
1806 struct vnode *vp = ap->a_vp;
1807 struct inode *ip = VTOI(vp);
1809 kprintf("tag VT_EXT2FS, ino %lu, on dev %s (%d, %d)",
1810 (u_long)ip->i_number, devtoname(ip->i_dev), major(ip->i_dev),
1812 if (vp->v_type == VFIFO)
1814 lockmgr_printinfo(&vp->v_lock);
1820 * Read wrapper for special devices.
1822 * ext2spec_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1823 * struct ucred *a_cred)
1827 ext2spec_read(struct vop_read_args *ap)
1834 resid = uio->uio_resid;
1835 error = VOCALL(&spec_vnode_vops, &ap->a_head);
1837 * The inode may have been revoked during the call, so it must not
1838 * be accessed blindly here or in the other wrapper functions.
1840 ip = VTOI(ap->a_vp);
1841 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1842 ip->i_flag |= IN_ACCESS;
1847 * Write wrapper for special devices.
1849 * ext2spec_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1850 * struct ucred *a_cred)
1854 ext2spec_write(struct vop_write_args *ap)
1861 resid = uio->uio_resid;
1862 error = VOCALL(&spec_vnode_vops, &ap->a_head);
1863 ip = VTOI(ap->a_vp);
1864 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1865 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1870 * Close wrapper for special devices.
1872 * Update the times on the inode then do device close.
1874 * ext2spec_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1878 ext2spec_close(struct vop_close_args *ap)
1880 struct vnode *vp = ap->a_vp;
1882 if (vp->v_sysref.refcnt > 1)
1884 return (VOCALL(&spec_vnode_vops, &ap->a_head));
1888 * Read wrapper for fifos.
1890 * ext2fifo_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1891 * struct ucred *a_cred)
1895 ext2fifo_read(struct vop_read_args *ap)
1902 resid = uio->uio_resid;
1903 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1904 ip = VTOI(ap->a_vp);
1905 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL &&
1906 (uio->uio_resid != resid || (error == 0 && resid != 0)))
1907 VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
1912 * Write wrapper for fifos.
1914 * ext2fifo_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1915 * struct ucred *a_cred)
1919 ext2fifo_write(struct vop_write_args *ap)
1926 resid = uio->uio_resid;
1927 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1928 ip = VTOI(ap->a_vp);
1929 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1930 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1935 * Close wrapper for fifos.
1937 * Update the times on the inode then do device close.
1939 * ext2fifo_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1943 ext2fifo_close(struct vop_close_args *ap)
1945 struct vnode *vp = ap->a_vp;
1947 if (vp->v_sysref.refcnt > 1)
1949 return (VOCALL(&fifo_vnode_vops, &ap->a_head));
1953 * Kqfilter wrapper for fifos.
1955 * Fall through to ext2 kqfilter routines if needed
1959 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
1963 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1965 error = ext2_kqfilter(ap);
1970 * Return POSIX pathconf information applicable to ext2 filesystems.
1972 * ext2_pathconf(struct vnode *a_vp, int a_name, int *a_retval)
1976 ext2_pathconf(struct vop_pathconf_args *ap)
1978 switch (ap->a_name) {
1980 *ap->a_retval = LINK_MAX;
1983 *ap->a_retval = NAME_MAX;
1986 *ap->a_retval = PATH_MAX;
1989 *ap->a_retval = PIPE_BUF;
1991 case _PC_CHOWN_RESTRICTED:
2004 * Advisory record locking support
2006 * ext2_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, struct flock *a_fl,
2011 ext2_advlock(struct vop_advlock_args *ap)
2013 struct inode *ip = VTOI(ap->a_vp);
2015 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size));
2019 * Initialize the vnode associated with a new inode, handle aliased
2023 ext2_vinit(struct mount *mntp, struct vnode **vpp)
2032 switch(vp->v_type = IFTOVT(ip->i_mode)) {
2035 vp->v_ops = &mntp->mnt_vn_spec_ops;
2036 addaliasu(vp, umajor(ip->i_rdev), uminor(ip->i_rdev));
2039 vp->v_ops = &mntp->mnt_vn_fifo_ops;
2043 vinitvmio(vp, ip->i_size);
2046 if ((ip->i_size >= vp->v_mount->mnt_maxsymlinklen) &&
2047 ip->i_din.di_blocks != 0
2049 vinitvmio(vp, ip->i_size);
2057 if (ip->i_number == ROOTINO)
2058 vp->v_flag |= VROOT;
2060 * Initialize modrev times
2062 getmicrouptime(&tv);
2063 SETHIGH(ip->i_modrev, tv.tv_sec);
2064 SETLOW(ip->i_modrev, tv.tv_usec * 4294);
2069 static struct filterops ext2read_filtops =
2070 { 1, NULL, filt_ext2detach, filt_ext2read };
2071 static struct filterops ext2write_filtops =
2072 { 1, NULL, filt_ext2detach, filt_ext2write };
2073 static struct filterops ext2vnode_filtops =
2074 { 1, NULL, filt_ext2detach, filt_ext2vnode };
2077 * ext2_kqfilter(struct vnode *a_vp, struct knote *a_kn)
2080 ext2_kqfilter(struct vop_kqfilter_args *ap)
2082 struct vnode *vp = ap->a_vp;
2083 struct knote *kn = ap->a_kn;
2086 switch (kn->kn_filter) {
2088 kn->kn_fop = &ext2read_filtops;
2091 kn->kn_fop = &ext2write_filtops;
2094 kn->kn_fop = &ext2vnode_filtops;
2100 kn->kn_hook = (caddr_t)vp;
2102 lwkt_gettoken(&ilock, &vp->v_pollinfo.vpi_token);
2103 SLIST_INSERT_HEAD(&vp->v_pollinfo.vpi_selinfo.si_note, kn, kn_selnext);
2104 lwkt_reltoken(&ilock);
2110 filt_ext2detach(struct knote *kn)
2112 struct vnode *vp = (struct vnode *)kn->kn_hook;
2115 lwkt_gettoken(&ilock, &vp->v_pollinfo.vpi_token);
2116 SLIST_REMOVE(&vp->v_pollinfo.vpi_selinfo.si_note,
2117 kn, knote, kn_selnext);
2118 lwkt_reltoken(&ilock);
2123 filt_ext2read(struct knote *kn, long hint)
2125 struct vnode *vp = (struct vnode *)kn->kn_hook;
2126 struct inode *ip = VTOI(vp);
2129 * filesystem is gone, so set the EOF flag and schedule
2130 * the knote for deletion.
2132 if (hint == NOTE_REVOKE) {
2133 kn->kn_flags |= (EV_EOF | EV_ONESHOT);
2137 kn->kn_data = ip->i_size - kn->kn_fp->f_offset;
2138 return (kn->kn_data != 0);
2143 filt_ext2write(struct knote *kn, long hint)
2146 * filesystem is gone, so set the EOF flag and schedule
2147 * the knote for deletion.
2149 if (hint == NOTE_REVOKE)
2150 kn->kn_flags |= (EV_EOF | EV_ONESHOT);
2157 filt_ext2vnode(struct knote *kn, long hint)
2159 if (kn->kn_sfflags & hint)
2160 kn->kn_fflags |= hint;
2161 if (hint == NOTE_REVOKE) {
2162 kn->kn_flags |= EV_EOF;
2165 return (kn->kn_fflags != 0);
2168 struct vop_ops ext2_vnode_vops = {
2169 .vop_default = vop_defaultop,
2170 .vop_fsync = ext2_fsync,
2171 .vop_read = ext2_read,
2172 .vop_reallocblks = ext2_reallocblks,
2173 .vop_write = ext2_write,
2174 .vop_access = ext2_access,
2175 .vop_advlock = ext2_advlock,
2176 .vop_bmap = ext2_bmap,
2177 .vop_old_lookup = ext2_lookup,
2178 .vop_close = ext2_close,
2179 .vop_old_create = ext2_create,
2180 .vop_getattr = ext2_getattr,
2181 .vop_inactive = ext2_inactive,
2182 .vop_old_link = ext2_link,
2183 .vop_old_mkdir = ext2_mkdir,
2184 .vop_old_mknod = ext2_mknod,
2185 .vop_mmap = ext2_mmap,
2186 .vop_open = ext2_open,
2187 .vop_pathconf = ext2_pathconf,
2188 .vop_poll = vop_stdpoll,
2189 .vop_kqfilter = ext2_kqfilter,
2190 .vop_print = ext2_print,
2191 .vop_readdir = ext2_readdir,
2192 .vop_readlink = ext2_readlink,
2193 .vop_reclaim = ext2_reclaim,
2194 .vop_old_remove = ext2_remove,
2195 .vop_old_rename = ext2_rename,
2196 .vop_old_rmdir = ext2_rmdir,
2197 .vop_setattr = ext2_setattr,
2198 .vop_strategy = ext2_strategy,
2199 .vop_old_symlink = ext2_symlink,
2200 .vop_old_whiteout = ext2_whiteout,
2201 .vop_getpages = ext2_getpages,
2202 .vop_putpages = vop_stdputpages
2205 struct vop_ops ext2_spec_vops = {
2206 .vop_default = ext2_vnoperatespec,
2207 .vop_fsync = ext2_fsync,
2208 .vop_access = ext2_access,
2209 .vop_close = ext2spec_close,
2210 .vop_getattr = ext2_getattr,
2211 .vop_inactive = ext2_inactive,
2212 .vop_print = ext2_print,
2213 .vop_read = ext2spec_read,
2214 .vop_reclaim = ext2_reclaim,
2215 .vop_setattr = ext2_setattr,
2216 .vop_write = ext2spec_write
2219 struct vop_ops ext2_fifo_vops = {
2220 .vop_default = ext2_vnoperatefifo,
2221 .vop_fsync = ext2_fsync,
2222 .vop_access = ext2_access,
2223 .vop_close = ext2fifo_close,
2224 .vop_getattr = ext2_getattr,
2225 .vop_inactive = ext2_inactive,
2226 .vop_kqfilter = ext2fifo_kqfilter,
2227 .vop_print = ext2_print,
2228 .vop_read = ext2fifo_read,
2229 .vop_reclaim = ext2_reclaim,
2230 .vop_setattr = ext2_setattr,
2231 .vop_write = ext2fifo_write
2234 VNODEOP_SET(ext2_vnode_vops);
2235 VNODEOP_SET(ext2_spec_vops);
2236 VNODEOP_SET(ext2_fifo_vops);
2242 ext2_vnoperate(struct vop_generic_args *ap)
2244 return (VOCALL(&ext2_vnode_vops, ap));
2248 * ext2_vnoperatefifo()
2251 ext2_vnoperatefifo(struct vop_generic_args *ap)
2253 return (VOCALL(&ext2_fifo_vops, ap));
2257 * ext2_vnoperatespec()
2260 ext2_vnoperatespec(struct vop_generic_args *ap)
2262 return (VOCALL(&ext2_spec_vops, ap));