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
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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 $
49 #include "opt_quota.h"
50 #include "opt_suiddir.h"
52 #include <sys/param.h>
53 #include <sys/systm.h>
54 #include <sys/resourcevar.h>
55 #include <sys/kernel.h>
57 #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 ext2fifo_close (struct vop_close_args *);
115 static int ext2fifo_kqfilter (struct vop_kqfilter_args *);
116 static int ext2fifo_read (struct vop_read_args *);
117 static int ext2fifo_write (struct vop_write_args *);
119 static int ext2_fsync (struct vop_fsync_args *);
120 static int ext2_read (struct vop_read_args *);
121 static int ext2_write (struct vop_write_args *);
122 static int ext2_remove (struct vop_old_remove_args *);
123 static int ext2_link (struct vop_old_link_args *);
124 static int ext2_rename (struct vop_old_rename_args *);
125 static int ext2_mkdir (struct vop_old_mkdir_args *);
126 static int ext2_rmdir (struct vop_old_rmdir_args *);
127 static int ext2_create (struct vop_old_create_args *);
128 static int ext2_mknod (struct vop_old_mknod_args *);
129 static int ext2_symlink (struct vop_old_symlink_args *);
131 #include "ext2_readwrite.c"
137 #define SETHIGH(q, h) { \
140 tmp.val[_QUAD_HIGHWORD] = (h); \
143 #define SETLOW(q, l) { \
146 tmp.val[_QUAD_LOWWORD] = (l); \
149 #define VN_KNOTE(vp, b) \
150 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, (b))
152 #define OFSFMT(vp) ((vp)->v_mount->mnt_maxsymlinklen <= 0)
155 * A virgin directory (no blushing please).
156 * Note that the type and namlen fields are reversed relative to ufs.
157 * Also, we don't use `struct odirtemplate', since it would just cause
158 * endianness problems.
160 static struct dirtemplate ext2_mastertemplate = {
161 0, 12, 1, EXT2_FT_DIR, ".",
162 0, DIRBLKSIZ - 12, 2, EXT2_FT_DIR, ".."
164 static struct dirtemplate ext2_omastertemplate = {
165 0, 12, 1, EXT2_FT_UNKNOWN, ".",
166 0, DIRBLKSIZ - 12, 2, EXT2_FT_UNKNOWN, ".."
170 * Create a regular file
172 * ext2_create(struct vnode *a_dvp, struct vnode **a_vpp,
173 * struct componentname *a_cnp, struct vattr *a_vap)
176 ext2_create(struct vop_old_create_args *ap)
181 ext2_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
182 ap->a_dvp, ap->a_vpp, ap->a_cnp);
189 * Synch an open file.
191 * ext2_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
196 static int ext2_fsync_bp(struct buf *bp, void *data);
198 struct ext2_fsync_bp_info {
204 ext2_fsync(struct vop_fsync_args *ap)
206 struct ext2_fsync_bp_info info;
207 struct vnode *vp = ap->a_vp;
211 * XXX why is all this fs specific?
215 * Flush all dirty buffers associated with a vnode.
217 ext2_discard_prealloc(VTOI(vp));
219 lwkt_gettoken(&vp->v_token);
222 info.waitfor = ap->a_waitfor;
223 count = RB_SCAN(buf_rb_tree, &vp->v_rbdirty_tree, NULL,
224 ext2_fsync_bp, &info);
228 if (ap->a_waitfor == MNT_WAIT) {
229 bio_track_wait(&vp->v_track_write, 0, 0);
231 if (!RB_EMPTY(&vp->v_rbdirty_tree)) {
232 vprint("ext2_fsync: dirty", vp);
237 lwkt_reltoken(&vp->v_token);
238 return (EXT2_UPDATE(ap->a_vp, ap->a_waitfor == MNT_WAIT));
242 ext2_fsync_bp(struct buf *bp, void *data)
244 struct ext2_fsync_bp_info *info = data;
246 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT))
248 if ((bp->b_flags & B_DELWRI) == 0)
249 panic("ext2_fsync: not dirty");
253 * Wait for I/O associated with indirect blocks to complete,
254 * since there is no way to quickly wait for them below.
256 if (bp->b_vp == info->vp || (info->waitfor & MNT_NOWAIT))
266 * ext2_mknod(struct vnode *a_dvp, struct vnode **a_vpp,
267 * struct componentname *a_cnp, struct vattr *a_vap)
271 ext2_mknod(struct vop_old_mknod_args *ap)
273 struct vattr *vap = ap->a_vap;
274 struct vnode **vpp = ap->a_vpp;
279 if (vap->va_rmajor != VNOVAL &&
280 makeudev(vap->va_rmajor, vap->va_rminor) == NOUDEV) {
284 error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
285 ap->a_dvp, vpp, ap->a_cnp);
289 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
290 if (vap->va_rmajor != VNOVAL) {
292 * Want to be able to use this to make badblock
293 * inodes, so don't truncate the dev number.
295 ip->i_rdev = makeudev(vap->va_rmajor, vap->va_rminor);
298 * Remove inode, then reload it through VFS_VGET so it is
299 * checked to see if it is an alias of an existing entry in
302 (*vpp)->v_type = VNON;
303 ino = ip->i_number; /* Save this before vgone() invalidates ip. */
304 vgone_vxlocked(*vpp);
306 error = VFS_VGET(ap->a_dvp->v_mount, NULL, ino, vpp);
315 * ext2_remove(struct vnode *a_dvp, struct vnode *a_vp,
316 * struct componentname *a_cnp)
319 ext2_remove(struct vop_old_remove_args *ap)
322 struct vnode *vp = ap->a_vp;
323 struct vnode *dvp = ap->a_dvp;
327 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
328 (VTOI(dvp)->i_flags & APPEND)) {
332 error = ext2_dirremove(dvp, ap->a_cnp);
335 ip->i_flag |= IN_CHANGE;
344 * ext2_link(struct vnode *a_tdvp, struct vnode *a_vp,
345 * struct componentname *a_cnp)
348 ext2_link(struct vop_old_link_args *ap)
350 struct vnode *vp = ap->a_vp;
351 struct vnode *tdvp = ap->a_tdvp;
352 struct componentname *cnp = ap->a_cnp;
356 if (tdvp->v_mount != vp->v_mount) {
360 if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE))) {
364 if ((nlink_t)ip->i_nlink >= LINK_MAX) {
368 if (ip->i_flags & (IMMUTABLE | APPEND)) {
373 ip->i_flag |= IN_CHANGE;
374 error = EXT2_UPDATE(vp, 1);
376 error = ext2_direnter(ip, tdvp, cnp);
379 ip->i_flag |= IN_CHANGE;
389 * Rename system call. fdvp, fvp are ref'd. tvp, tdvp are ref'd and locked.
390 * all vp's are released and must be in an unlocked state on return.
392 * ext2_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
393 * struct componentname *a_fcnp, struct vnode *a_tdvp,
394 * struct vnode *a_tvp, struct componentname *a_tcnp)
397 ext2_rename(struct vop_old_rename_args *ap)
399 struct vnode *tvp = ap->a_tvp;
400 struct vnode *tdvp = ap->a_tdvp;
401 struct vnode *fvp = ap->a_fvp;
402 struct vnode *fdvp = ap->a_fdvp;
403 struct componentname *tcnp = ap->a_tcnp;
404 struct componentname *fcnp = ap->a_fcnp;
405 struct inode *ip, *xp, *dp;
406 struct dirtemplate dirbuf;
407 int doingdirectory = 0, oldparent = 0, newparent = 0;
412 * Check for cross-device rename.
414 if ((fvp->v_mount != tdvp->v_mount) ||
415 (tvp && (fvp->v_mount != tvp->v_mount)) ||
430 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
431 (VTOI(tdvp)->i_flags & APPEND))) {
437 * Renaming a file to itself has no effect. The upper layers should
438 * not call us in that case. Temporarily just warn if they do.
445 if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
449 * fvp, tvp, tdvp locked. fdvp not locked but note that fdvp may
454 if (ip->i_nlink >= LINK_MAX) {
459 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
460 || (dp->i_flags & APPEND)) {
465 if ((ip->i_mode & IFMT) == IFDIR) {
467 * Avoid ".", "..", and aliases of "." for obvious reasons.
469 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
470 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & CNP_ISDOTDOT ||
471 (ip->i_flag & IN_RENAME)) {
476 ip->i_flag |= IN_RENAME;
477 oldparent = dp->i_number;
482 * tvp is non-NULL if the target exists. fvp is still locked but
483 * we will unlock it soon. The 'bad' goto target requires dp and
484 * xp to be correctly assigned.
493 * 1) Bump link count while we're moving stuff
494 * around. If we crash somewhere before
495 * completing our work, the link count
496 * may be wrong, but correctable.
499 ip->i_flag |= IN_CHANGE;
500 if ((error = EXT2_UPDATE(fvp, 1)) != 0) {
506 * If ".." must be changed (ie the directory gets a new
507 * parent) then the source directory must not be in the
508 * directory heirarchy above the target, as this would
509 * orphan everything below the source directory. Also
510 * the user must have write permission in the source so
511 * as to be able to change "..". We must repeat the call
512 * to namei, as the parent directory is unlocked by the
513 * call to checkpath().
515 error = VOP_EACCESS(fvp, VWRITE, tcnp->cn_cred);
519 * tvp (if not NULL) and tdvp are locked. fvp and fdvp are not.
520 * dp and xp are set according to tdvp and tvp.
522 if (oldparent != dp->i_number)
523 newparent = dp->i_number;
524 if (doingdirectory && newparent) {
525 if (error) /* write access check above */
529 * Prepare for relookup, get rid of xp
537 * checkpath vput()'s tdvp (VTOI(dp)) on return no matter what,
538 * get an extra ref so we wind up with just an unlocked, ref'd
539 * tdvp. The 'out' target skips xp and tdvp cleanups. Our
540 * tdvp is now unlocked so we have to clean it up ourselves.
543 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
544 tcnp->cn_flags |= CNP_PDIRUNLOCK;
550 * relookup no longer messes with the ref count. An unlocked
551 * tdvp must be passed and if no error occurs a locked tdvp
552 * will be returned. We have to use the out target again.
554 error = relookup(tdvp, &tvp, tcnp);
556 if (tcnp->cn_flags & CNP_PDIRUNLOCK)
564 * tdvp is locked at this point. in the RENAME case tvp may
565 * be NULL without an error, assign xp accordingly. The
566 * 'bad' target can be used again after this.
573 * 2) If target doesn't exist, link the target
574 * to the source and unlink the source.
575 * Otherwise, rewrite the target directory
576 * entry to reference the source inode and
577 * expunge the original entry's existence.
579 * tdvp and tvp are cleaned up by this code. tvp is only good if
583 if (dp->i_dev != ip->i_dev)
584 panic("ext2_rename: EXDEV");
586 * Account for ".." in new directory.
587 * When source and destination have the same
588 * parent we don't fool with the link count.
590 if (doingdirectory && newparent) {
591 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
596 dp->i_flag |= IN_CHANGE;
597 error = EXT2_UPDATE(tdvp, 1);
601 error = ext2_direnter(ip, tdvp, tcnp);
603 if (doingdirectory && newparent) {
605 dp->i_flag |= IN_CHANGE;
606 EXT2_UPDATE(tdvp, 1);
612 * manual cleanup, we can't use the bad or out target after
617 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
618 panic("ext2_rename: EXDEV");
620 * Short circuit rename(foo, foo).
622 if (xp->i_number == ip->i_number)
623 panic("ext2_rename: same file");
625 * If the parent directory is "sticky", then the user must
626 * own the parent directory, or the destination of the rename,
627 * otherwise the destination may not be changed (except by
628 * root). This implements append-only directories.
630 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
631 tcnp->cn_cred->cr_uid != dp->i_uid &&
632 xp->i_uid != tcnp->cn_cred->cr_uid) {
637 * Target must be empty if a directory and have no links
638 * to it. Also, ensure source and target are compatible
639 * (both directories, or both not directories).
641 if ((xp->i_mode&IFMT) == IFDIR) {
642 if (! ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
647 if (!doingdirectory) {
651 } else if (doingdirectory) {
655 error = ext2_dirrewrite(dp, ip, tcnp);
659 * If the target directory is in the same
660 * directory as the source directory,
661 * decrement the link count on the parent
662 * of the target directory.
664 if (doingdirectory && !newparent) {
666 dp->i_flag |= IN_CHANGE;
670 * manual cleanup, we can't use the bad or out target after
676 * Adjust the link count of the target to
677 * reflect the dirrewrite above. If this is
678 * a directory it is empty and there are
679 * no links to it, so we can squash the inode and
680 * any space associated with it. We disallowed
681 * renaming over top of a directory with links to
682 * it above, as the remaining link would point to
683 * a directory without "." or ".." entries.
686 if (doingdirectory) {
687 if (--xp->i_nlink != 0)
688 panic("ext2_rename: linked directory");
689 error = EXT2_TRUNCATE(tvp, (off_t)0, IO_SYNC,
692 xp->i_flag |= IN_CHANGE;
698 * tvp and tdvp have been cleaned up. The bad and out targets may
699 * not be used. fvp and fdvp are ref'd but not locked. ip
700 * still represents the old fvp and ip->i_flag may still have IN_RENAME
701 * set (if doingdirectory).
705 * 3) Unlink the source.
707 * fdvp is locked and ref'd. ap->a_fvp holds the old lookup unlocked
708 * and ref'd, fvp will hold the new lookup locked and ref'd.
710 * After the relookup ap->a_fvp must be released as part of our
711 * cleanup, not just fdvp and fvp. And, on success, fdvp and
712 * fvp will be locked so the bad and out targets cannot be used.
714 fcnp->cn_flags &= ~CNP_MODMASK;
715 fcnp->cn_flags |= CNP_LOCKPARENT;
716 KKASSERT(fcnp->cn_flags & CNP_PDIRUNLOCK);
717 error = relookup(fdvp, &fvp, fcnp);
720 * From name has disappeared.
723 panic("ext2_rename: lost dir entry");
724 /* ip->i_flag only sets IN_RENAME if doingdirectory */
726 if (fcnp->cn_flags & CNP_PDIRUNLOCK)
732 KKASSERT((fcnp->cn_flags & CNP_PDIRUNLOCK) == 0);
735 * This case shouldn't occur
739 * From name has disappeared.
742 panic("ext2_rename: lost dir entry");
743 /* ip->i_flag only sets IN_RENAME if doingdirectory */
751 * fvp and fdvp are both ref'd and locked.
757 * Ensure that the directory entry still exists and has not
758 * changed while the new name has been entered. If the source is
759 * a file then the entry may have been unlinked or renamed. In
760 * either case there is no further work to be done. If the source
761 * is a directory then it cannot have been rmdir'ed; its link
762 * count of three would cause a rmdir to fail with ENOTEMPTY.
763 * The IN_RENAME flag ensures that it cannot be moved by another
768 panic("ext2_rename: lost dir entry");
769 /* ip->i_flag only sets IN_RENAME if doingdirectory */
772 * If the source is a directory with a
773 * new parent, the link count of the old
774 * parent directory must be decremented
775 * and ".." set to point to the new parent.
777 if (doingdirectory && newparent) {
779 dp->i_flag |= IN_CHANGE;
780 error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
781 sizeof (struct dirtemplate), (off_t)0,
782 UIO_SYSSPACE, IO_NODELOCKED,
783 tcnp->cn_cred, NULL);
785 /* Like ext2 little-endian: */
786 namlen = dirbuf.dotdot_type;
788 dirbuf.dotdot_name[0] != '.' ||
789 dirbuf.dotdot_name[1] != '.') {
790 ext2_dirbad(xp, (doff_t)12,
791 "rename: mangled dir");
793 dirbuf.dotdot_ino = newparent;
794 vn_rdwr(UIO_WRITE, fvp,
796 sizeof (struct dirtemplate),
797 (off_t)0, UIO_SYSSPACE,
798 IO_NODELOCKED|IO_SYNC,
799 tcnp->cn_cred, NULL);
803 error = ext2_dirremove(fdvp, fcnp);
806 xp->i_flag |= IN_CHANGE;
808 xp->i_flag &= ~IN_RENAME;
822 ip->i_flag &= ~IN_RENAME;
823 if (vn_lock(fvp, LK_EXCLUSIVE) == 0) {
825 ip->i_flag |= IN_CHANGE;
826 ip->i_flag &= ~IN_RENAME;
837 * ext2_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
838 * struct componentname *a_cnp, struct vattr *a_vap)
841 ext2_mkdir(struct vop_old_mkdir_args *ap)
843 struct vnode *dvp = ap->a_dvp;
844 struct vattr *vap = ap->a_vap;
845 struct componentname *cnp = ap->a_cnp;
846 struct inode *ip, *dp;
848 struct dirtemplate dirtemplate, *dtp;
852 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
856 dmode = vap->va_mode & 0777;
859 * Must simulate part of ext2_makeinode here to acquire the inode,
860 * but not have it entered in the parent directory. The entry is
861 * made later after writing "." and ".." entries.
863 error = EXT2_VALLOC(dvp, dmode, cnp->cn_cred, &tvp);
867 ip->i_gid = dp->i_gid;
871 struct ucred ucred, *ucp;
875 * if we are hacking owners here, (only do this where told to)
876 * and we are not giving it TOO root, (would subvert quotas)
877 * then go ahead and give it to the other user.
878 * The new directory also inherits the SUID bit.
879 * If user's UID and dir UID are the same,
880 * 'give it away' so that the SUID is still forced on.
882 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
883 (dp->i_mode & ISUID) && dp->i_uid) {
885 ip->i_uid = dp->i_uid;
887 if (dp->i_uid != cnp->cn_cred->cr_uid) {
889 * make sure the correct user gets charged
891 * Make a dummy credential for the victim.
892 * XXX This seems to never be accessed out of
893 * our context so a stack variable is ok.
896 ucred.cr_uid = ip->i_uid;
897 ucred.cr_ngroups = 1;
898 ucred.cr_groups[0] = dp->i_gid;
903 ip->i_uid = cnp->cn_cred->cr_uid;
906 if ((error = ext2_getinoquota(ip)) ||
907 (error = ext2_chkiq(ip, 1, ucp, 0))) {
908 EXT2_VFREE(tvp, ip->i_number, dmode);
915 ip->i_uid = cnp->cn_cred->cr_uid;
917 if ((error = ext2_getinoquota(ip)) ||
918 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
919 EXT2_VFREE(tvp, ip->i_number, dmode);
925 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
927 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
929 if (cnp->cn_flags & CNP_ISWHITEOUT)
930 ip->i_flags |= UF_OPAQUE;
931 error = EXT2_UPDATE(tvp, 1);
934 * The vnode must have a VM object in order to issue buffer cache
937 vinitvmio(tvp, 0, PAGE_SIZE, -1);
940 * Bump link count in parent directory
941 * to reflect work done below. Should
942 * be done before reference is created
943 * so reparation is possible if we crash.
946 dp->i_flag |= IN_CHANGE;
947 error = EXT2_UPDATE(dvp, 1);
951 /* Initialize directory with "." and ".." from static template. */
952 if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs->s_es,
953 EXT2_FEATURE_INCOMPAT_FILETYPE))
954 dtp = &ext2_mastertemplate;
956 dtp = &ext2_omastertemplate;
958 dirtemplate.dot_ino = ip->i_number;
959 dirtemplate.dotdot_ino = dp->i_number;
960 /* note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE
961 * so let's just redefine it - for this function only
964 #define DIRBLKSIZ VTOI(dvp)->i_e2fs->s_blocksize
965 dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
966 error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
967 sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
968 IO_NODELOCKED|IO_SYNC, cnp->cn_cred, NULL);
971 dp->i_flag |= IN_CHANGE;
974 if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
975 panic("ext2_mkdir: blksize"); /* XXX should grow with balloc() */
977 ip->i_size = DIRBLKSIZ;
978 ip->i_flag |= IN_CHANGE;
981 /* Directory set up, now install its entry in the parent directory. */
982 error = ext2_direnter(ip, dvp, cnp);
985 dp->i_flag |= IN_CHANGE;
989 * No need to do an explicit VOP_TRUNCATE here, vrele will do this
990 * for us because we set the link count to 0.
994 ip->i_flag |= IN_CHANGE;
1001 #define DIRBLKSIZ DEV_BSIZE
1005 * Rmdir system call.
1007 * ext2_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
1008 * struct componentname *a_cnp)
1011 ext2_rmdir(struct vop_old_rmdir_args *ap)
1013 struct vnode *vp = ap->a_vp;
1014 struct vnode *dvp = ap->a_dvp;
1015 struct componentname *cnp = ap->a_cnp;
1016 struct inode *ip, *dp;
1023 * Verify the directory is empty (and valid).
1024 * (Rmdir ".." won't be valid since
1025 * ".." will contain a reference to
1026 * the current directory and thus be
1030 if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
1034 if ((dp->i_flags & APPEND)
1035 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1040 * Delete reference to directory before purging
1041 * inode. If we crash in between, the directory
1042 * will be reattached to lost+found,
1044 error = ext2_dirremove(dvp, cnp);
1048 dp->i_flag |= IN_CHANGE;
1051 * Truncate inode. The only stuff left
1052 * in the directory is "." and "..". The
1053 * "." reference is inconsequential since
1054 * we're quashing it. The ".." reference
1055 * has already been adjusted above. We've
1056 * removed the "." reference and the reference
1057 * in the parent directory, but there may be
1058 * other hard links so decrement by 2 and
1059 * worry about them later.
1062 error = EXT2_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
1063 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1069 * symlink -- make a symbolic link
1071 * ext2_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
1072 * struct componentname *a_cnp, struct vattr *a_vap,
1076 ext2_symlink(struct vop_old_symlink_args *ap)
1078 struct vnode *vp, **vpp = ap->a_vpp;
1082 error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
1087 len = strlen(ap->a_target);
1088 if (len < vp->v_mount->mnt_maxsymlinklen) {
1090 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
1092 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1095 * Make sure we have a VM object in order to use
1098 if (vp->v_object == NULL)
1099 vinitvmio(vp, 0, PAGE_SIZE, -1);
1101 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
1102 UIO_SYSSPACE, IO_NODELOCKED,
1103 ap->a_cnp->cn_cred, NULL);
1113 * Allocate a new inode.
1116 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
1117 struct componentname *cnp)
1119 struct inode *ip, *pdir;
1125 if ((mode & IFMT) == 0)
1128 error = EXT2_VALLOC(dvp, mode, cnp->cn_cred, &tvp);
1133 ip->i_gid = pdir->i_gid;
1137 struct ucred ucred, *ucp;
1142 * not the owner of the directory,
1143 * and we are hacking owners here, (only do this where told to)
1144 * and we are not giving it TOO root, (would subvert quotas)
1145 * then go ahead and give it to the other user.
1146 * Note that this drops off the execute bits for security.
1148 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
1149 (pdir->i_mode & ISUID) &&
1150 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
1151 ip->i_uid = pdir->i_uid;
1155 * make sure the correct user gets charged
1157 * Quickly knock up a dummy credential for the victim.
1158 * XXX This seems to never be accessed out of our
1159 * context so a stack variable is ok.
1162 ucred.cr_uid = ip->i_uid;
1163 ucred.cr_ngroups = 1;
1164 ucred.cr_groups[0] = pdir->i_gid;
1168 ip->i_uid = cnp->cn_cred->cr_uid;
1172 if ((error = ext2_getinoquota(ip)) ||
1173 (error = ext2_chkiq(ip, 1, ucp, 0))) {
1174 EXT2_VFREE(tvp, ip->i_number, mode);
1181 ip->i_uid = cnp->cn_cred->cr_uid;
1183 if ((error = ext2_getinoquota(ip)) ||
1184 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
1185 EXT2_VFREE(tvp, ip->i_number, mode);
1191 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
1193 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
1195 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
1196 priv_check_cred(cnp->cn_cred, PRIV_VFS_SETGID, 0))
1197 ip->i_mode &= ~ISGID;
1199 if (cnp->cn_flags & CNP_ISWHITEOUT)
1200 ip->i_flags |= UF_OPAQUE;
1203 * Regular files and directories need VM objects. Softlinks do
1204 * not (not immediately anyway).
1206 if (tvp->v_type == VREG || tvp->v_type == VDIR)
1207 vinitvmio(tvp, 0, PAGE_SIZE, -1);
1210 * Make sure inode goes to disk before directory entry.
1212 error = EXT2_UPDATE(tvp, 1);
1215 error = ext2_direnter(ip, dvp, cnp);
1224 * Write error occurred trying to update the inode
1225 * or the directory so must deallocate the inode.
1228 ip->i_flag |= IN_CHANGE;
1234 ext2_itimes(struct vnode *vp)
1240 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
1242 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp))
1243 ip->i_flag |= IN_LAZYMOD;
1245 ip->i_flag |= IN_MODIFIED;
1246 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
1248 if (ip->i_flag & IN_ACCESS) {
1249 ip->i_atime = ts.tv_sec;
1250 ip->i_atimensec = ts.tv_nsec;
1252 if (ip->i_flag & IN_UPDATE) {
1253 ip->i_mtime = ts.tv_sec;
1254 ip->i_mtimensec = ts.tv_nsec;
1257 if (ip->i_flag & IN_CHANGE) {
1258 ip->i_ctime = ts.tv_sec;
1259 ip->i_ctimensec = ts.tv_nsec;
1262 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
1270 * ext2_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
1271 * struct file *a_fp)
1276 ext2_open(struct vop_open_args *ap)
1278 struct vnode *vp = ap->a_vp;
1281 * Files marked append-only must be opened for appending.
1283 if ((VTOI(vp)->i_flags & APPEND) &&
1284 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) {
1287 return (vop_stdopen(ap));
1293 * Update the times on the inode.
1295 * ext2_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1300 ext2_close(struct vop_close_args *ap)
1302 struct vnode *vp = ap->a_vp;
1304 if (vp->v_sysref.refcnt > 1)
1306 return (vop_stdclose(ap));
1310 * ext2_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
1314 ext2_access(struct vop_access_args *ap)
1316 struct vnode *vp = ap->a_vp;
1317 struct inode *ip = VTOI(vp);
1321 if (ap->a_mode & VWRITE) {
1322 switch (vp->v_type) {
1326 if ((error = ext2_getinoquota(ip)) != 0)
1335 error = vop_helper_access(ap, ip->i_uid, ip->i_gid, ip->i_mode,
1341 * ext2_getattr(struct vnode *a_vp, struct vattr *a_vap)
1346 ext2_getattr(struct vop_getattr_args *ap)
1348 struct vnode *vp = ap->a_vp;
1349 struct inode *ip = VTOI(vp);
1350 struct vattr *vap = ap->a_vap;
1354 * Copy from inode table
1356 vap->va_fsid = dev2udev(ip->i_dev);
1357 vap->va_fileid = ip->i_number;
1358 vap->va_mode = ip->i_mode & ~IFMT;
1359 vap->va_nlink = VFSTOEXT2(vp->v_mount)->um_i_effnlink_valid ?
1360 ip->i_effnlink : ip->i_nlink;
1361 vap->va_uid = ip->i_uid;
1362 vap->va_gid = ip->i_gid;
1363 vap->va_rmajor = umajor(ip->i_rdev);
1364 vap->va_rminor = uminor(ip->i_rdev);
1365 vap->va_size = ip->i_din.di_size;
1366 vap->va_atime.tv_sec = ip->i_atime;
1367 vap->va_atime.tv_nsec = ip->i_atimensec;
1368 vap->va_mtime.tv_sec = ip->i_mtime;
1369 vap->va_mtime.tv_nsec = ip->i_mtimensec;
1370 vap->va_ctime.tv_sec = ip->i_ctime;
1371 vap->va_ctime.tv_nsec = ip->i_ctimensec;
1372 vap->va_flags = ip->i_flags;
1373 vap->va_gen = ip->i_gen;
1374 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
1375 vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
1376 vap->va_type = IFTOVT(ip->i_mode);
1377 vap->va_filerev = ip->i_modrev;
1382 * Set attribute vnode op. called from several syscalls
1384 * ext2_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
1388 ext2_setattr(struct vop_setattr_args *ap)
1390 struct vattr *vap = ap->a_vap;
1391 struct vnode *vp = ap->a_vp;
1392 struct inode *ip = VTOI(vp);
1393 struct ucred *cred = ap->a_cred;
1397 * Check for unsettable attributes.
1399 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
1400 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
1401 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
1402 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
1405 if (vap->va_flags != VNOVAL) {
1406 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1408 if (cred->cr_uid != ip->i_uid &&
1409 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)))
1412 * Note that a root chflags becomes a user chflags when
1413 * we are jailed, unless the jail.chflags_allowed sysctl
1416 if (cred->cr_uid == 0 &&
1417 (!jailed(cred) || jail_chflags_allowed)) {
1419 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) &&
1422 ip->i_flags = vap->va_flags;
1425 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
1426 (vap->va_flags & UF_SETTABLE) != vap->va_flags)
1428 ip->i_flags &= SF_SETTABLE;
1429 ip->i_flags |= (vap->va_flags & UF_SETTABLE);
1431 ip->i_flag |= IN_CHANGE;
1432 if (vap->va_flags & (IMMUTABLE | APPEND))
1435 if (ip->i_flags & (IMMUTABLE | APPEND))
1438 * Go through the fields and update iff not VNOVAL.
1440 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
1441 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1443 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred)) != 0)
1446 if (vap->va_size != VNOVAL) {
1448 * Disallow write attempts on read-only filesystems;
1449 * unless the file is a socket, fifo, or a block or
1450 * character device resident on the filesystem.
1452 switch (vp->v_type) {
1457 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1463 if ((error = EXT2_TRUNCATE(vp, vap->va_size, 0, cred)) != 0)
1467 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
1468 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1470 if (cred->cr_uid != ip->i_uid &&
1471 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) &&
1472 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1473 (error = VOP_EACCESS(vp, VWRITE, cred))))
1475 if (vap->va_atime.tv_sec != VNOVAL)
1476 ip->i_flag |= IN_ACCESS;
1477 if (vap->va_mtime.tv_sec != VNOVAL)
1478 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1480 if (vap->va_atime.tv_sec != VNOVAL) {
1481 ip->i_atime = vap->va_atime.tv_sec;
1482 ip->i_atimensec = vap->va_atime.tv_nsec;
1484 if (vap->va_mtime.tv_sec != VNOVAL) {
1485 ip->i_mtime = vap->va_mtime.tv_sec;
1486 ip->i_mtimensec = vap->va_mtime.tv_nsec;
1488 error = EXT2_UPDATE(vp, 0);
1493 if (vap->va_mode != (mode_t)VNOVAL) {
1494 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1496 error = ext2_chmod(vp, (int)vap->va_mode, cred);
1498 VN_KNOTE(vp, NOTE_ATTRIB);
1503 * Change the mode on a file.
1504 * Inode must be locked before calling.
1507 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred)
1509 struct inode *ip = VTOI(vp);
1512 if (cred->cr_uid != ip->i_uid) {
1513 error = priv_check_cred(cred, PRIV_VFS_CHMOD, 0);
1518 if (vp->v_type != VDIR && (mode & S_ISTXT))
1520 if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
1523 ip->i_mode &= ~ALLPERMS;
1524 ip->i_mode |= (mode & ALLPERMS);
1525 ip->i_flag |= IN_CHANGE;
1530 * Perform chown operation on inode ip;
1531 * inode must be locked prior to call.
1534 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred)
1536 struct inode *ip = VTOI(vp);
1545 if (uid == (uid_t)VNOVAL)
1547 if (gid == (gid_t)VNOVAL)
1550 * If we don't own the file, are trying to change the owner
1551 * of the file, or are not a member of the target group,
1552 * the caller must be superuser or the call fails.
1554 if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
1555 (gid != ip->i_gid && !(cred->cr_gid == gid ||
1556 groupmember((gid_t)gid, cred)))) &&
1557 (error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0)))
1562 if ((error = ext2_getinoquota(ip)) != 0)
1565 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1566 ip->i_dquot[USRQUOTA] = NODQUOT;
1569 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1570 ip->i_dquot[GRPQUOTA] = NODQUOT;
1572 change = ip->i_blocks;
1573 (void) ext2_chkdq(ip, -change, cred, CHOWN);
1574 (void) ext2_chkiq(ip, -1, cred, CHOWN);
1575 for (i = 0; i < MAXQUOTAS; i++) {
1576 ext2_dqrele(vp, ip->i_dquot[i]);
1577 ip->i_dquot[i] = NODQUOT;
1583 if ((error = ext2_getinoquota(ip)) == 0) {
1585 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1586 ip->i_dquot[USRQUOTA] = NODQUOT;
1589 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1590 ip->i_dquot[GRPQUOTA] = NODQUOT;
1592 if ((error = ext2_chkdq(ip, change, cred, CHOWN)) == 0) {
1593 if ((error = ext2_chkiq(ip, 1, cred, CHOWN)) == 0)
1596 (void)ext2_chkdq(ip, -change, cred, CHOWN|FORCE);
1598 for (i = 0; i < MAXQUOTAS; i++) {
1599 ext2_dqrele(vp, ip->i_dquot[i]);
1600 ip->i_dquot[i] = NODQUOT;
1605 if (ext2_getinoquota(ip) == 0) {
1607 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1608 ip->i_dquot[USRQUOTA] = NODQUOT;
1611 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1612 ip->i_dquot[GRPQUOTA] = NODQUOT;
1614 (void) ext2_chkdq(ip, change, cred, FORCE|CHOWN);
1615 (void) ext2_chkiq(ip, 1, cred, FORCE|CHOWN);
1616 (void) ext2_getinoquota(ip);
1620 if (ext2_getinoquota(ip))
1621 panic("ext2_chown: lost quota");
1623 ip->i_flag |= IN_CHANGE;
1624 if (cred->cr_uid != 0 && (ouid != uid || ogid != gid))
1625 ip->i_mode &= ~(ISUID | ISGID);
1632 * NB Currently unsupported.
1634 * ext2_mmap(struct vnode *a_vp, int a_fflags, struct ucred *a_cred)
1639 ext2_mmap(struct vop_mmap_args *ap)
1645 * whiteout vnode call
1647 * ext2_whiteout(struct vnode *a_dvp, struct componentname *a_cnp, int a_flags)
1651 ext2_whiteout(struct vop_old_whiteout_args *ap)
1653 return (EOPNOTSUPP);
1657 * Return target name of a symbolic link
1659 * ext2_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred)
1663 ext2_readlink(struct vop_readlink_args *ap)
1665 struct vnode *vp = ap->a_vp;
1666 struct inode *ip = VTOI(vp);
1670 if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
1671 (ip->i_din.di_blocks == 0)) { /* XXX - for old fastlink support */
1672 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
1675 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
1679 * Calculate the logical to physical mapping if not done already,
1680 * then call the device strategy routine.
1682 * In order to be able to swap to a file, the VOP_BMAP operation may not
1683 * deadlock on memory. See ext2_bmap() for details.
1685 * ext2_strategy(struct vnode *a_vp, struct bio *a_bio)
1689 ext2_strategy(struct vop_strategy_args *ap)
1691 struct bio *bio = ap->a_bio;
1693 struct buf *bp = bio->bio_buf;
1694 struct vnode *vp = ap->a_vp;
1699 if (vp->v_type == VBLK || vp->v_type == VCHR)
1700 panic("ext2_strategy: spec");
1701 nbio = push_bio(bio);
1702 if (nbio->bio_offset == NOOFFSET) {
1703 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
1704 NULL, NULL, bp->b_cmd);
1706 bp->b_error = error;
1707 bp->b_flags |= B_ERROR;
1708 /* I/O was never started on nbio, must biodone(bio) */
1712 if (nbio->bio_offset == NOOFFSET)
1715 if (nbio->bio_offset == NOOFFSET) {
1716 /* I/O was never started on nbio, must biodone(bio) */
1720 vn_strategy(ip->i_devvp, nbio);
1725 * Print out the contents of an inode.
1727 * ext2_print(struct vnode *a_vp)
1731 ext2_print(struct vop_print_args *ap)
1733 struct vnode *vp = ap->a_vp;
1734 struct inode *ip = VTOI(vp);
1736 kprintf("tag VT_EXT2FS, ino %lu, on dev %s (%d, %d)",
1737 (u_long)ip->i_number, devtoname(ip->i_dev), major(ip->i_dev),
1739 if (vp->v_type == VFIFO)
1741 lockmgr_printinfo(&vp->v_lock);
1747 * Read wrapper for fifos.
1749 * ext2fifo_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1750 * struct ucred *a_cred)
1754 ext2fifo_read(struct vop_read_args *ap)
1761 resid = uio->uio_resid;
1762 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1763 ip = VTOI(ap->a_vp);
1764 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL &&
1765 (uio->uio_resid != resid || (error == 0 && resid != 0)))
1766 VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
1771 * Write wrapper for fifos.
1773 * ext2fifo_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1774 * struct ucred *a_cred)
1778 ext2fifo_write(struct vop_write_args *ap)
1785 resid = uio->uio_resid;
1786 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1787 ip = VTOI(ap->a_vp);
1788 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1789 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1794 * Close wrapper for fifos.
1796 * Update the times on the inode then do device close.
1798 * ext2fifo_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1802 ext2fifo_close(struct vop_close_args *ap)
1804 struct vnode *vp = ap->a_vp;
1806 if (vp->v_sysref.refcnt > 1)
1808 return (VOCALL(&fifo_vnode_vops, &ap->a_head));
1812 * Kqfilter wrapper for fifos.
1814 * Fall through to ext2 kqfilter routines if needed
1818 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
1822 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1824 error = ext2_kqfilter(ap);
1829 * Return POSIX pathconf information applicable to ext2 filesystems.
1831 * ext2_pathconf(struct vnode *a_vp, int a_name, int *a_retval)
1835 ext2_pathconf(struct vop_pathconf_args *ap)
1837 switch (ap->a_name) {
1839 *ap->a_retval = LINK_MAX;
1842 *ap->a_retval = NAME_MAX;
1845 *ap->a_retval = PATH_MAX;
1848 *ap->a_retval = PIPE_BUF;
1850 case _PC_CHOWN_RESTRICTED:
1863 * Advisory record locking support
1865 * ext2_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, struct flock *a_fl,
1870 ext2_advlock(struct vop_advlock_args *ap)
1872 struct inode *ip = VTOI(ap->a_vp);
1874 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size));
1878 * Initialize the vnode associated with a new inode, handle aliased
1882 ext2_vinit(struct mount *mntp, struct vnode **vpp)
1891 switch(vp->v_type = IFTOVT(ip->i_mode)) {
1894 vp->v_ops = &mntp->mnt_vn_spec_ops;
1895 addaliasu(vp, umajor(ip->i_rdev), uminor(ip->i_rdev));
1898 vp->v_ops = &mntp->mnt_vn_fifo_ops;
1902 vinitvmio(vp, ip->i_size, PAGE_SIZE, -1); /* XXX */
1905 if ((ip->i_size >= vp->v_mount->mnt_maxsymlinklen) &&
1906 ip->i_din.di_blocks != 0
1908 vinitvmio(vp, ip->i_size, PAGE_SIZE, -1);
1916 if (ip->i_number == ROOTINO)
1917 vp->v_flag |= VROOT;
1919 * Initialize modrev times
1921 getmicrouptime(&tv);
1922 SETHIGH(ip->i_modrev, tv.tv_sec);
1923 SETLOW(ip->i_modrev, tv.tv_usec * 4294);
1928 static struct filterops ext2read_filtops =
1929 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2read };
1930 static struct filterops ext2write_filtops =
1931 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2write };
1932 static struct filterops ext2vnode_filtops =
1933 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2vnode };
1936 * ext2_kqfilter(struct vnode *a_vp, struct knote *a_kn)
1939 ext2_kqfilter(struct vop_kqfilter_args *ap)
1941 struct vnode *vp = ap->a_vp;
1942 struct knote *kn = ap->a_kn;
1944 switch (kn->kn_filter) {
1946 kn->kn_fop = &ext2read_filtops;
1949 kn->kn_fop = &ext2write_filtops;
1952 kn->kn_fop = &ext2vnode_filtops;
1955 return (EOPNOTSUPP);
1958 kn->kn_hook = (caddr_t)vp;
1960 /* XXX: kq token actually protects the list */
1961 lwkt_gettoken(&vp->v_token);
1962 knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1963 lwkt_reltoken(&vp->v_token);
1969 filt_ext2detach(struct knote *kn)
1971 struct vnode *vp = (struct vnode *)kn->kn_hook;
1973 lwkt_gettoken(&vp->v_token);
1974 knote_remove(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1975 lwkt_reltoken(&vp->v_token);
1980 filt_ext2read(struct knote *kn, long hint)
1982 struct vnode *vp = (struct vnode *)kn->kn_hook;
1983 struct inode *ip = VTOI(vp);
1987 * filesystem is gone, so set the EOF flag and schedule
1988 * the knote for deletion.
1990 if (hint == NOTE_REVOKE) {
1991 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
1994 off = ip->i_size - kn->kn_fp->f_offset;
1995 kn->kn_data = (off < INTPTR_MAX) ? off : INTPTR_MAX;
1996 if (kn->kn_sfflags & NOTE_OLDAPI)
1998 return (kn->kn_data != 0);
2003 filt_ext2write(struct knote *kn, long hint)
2006 * filesystem is gone, so set the EOF flag and schedule
2007 * the knote for deletion.
2009 if (hint == NOTE_REVOKE)
2010 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
2017 filt_ext2vnode(struct knote *kn, long hint)
2019 if (kn->kn_sfflags & hint)
2020 kn->kn_fflags |= hint;
2021 if (hint == NOTE_REVOKE) {
2022 kn->kn_flags |= (EV_EOF | EV_NODATA);
2025 return (kn->kn_fflags != 0);
2028 struct vop_ops ext2_vnode_vops = {
2029 .vop_default = vop_defaultop,
2030 .vop_fsync = ext2_fsync,
2031 .vop_read = ext2_read,
2032 .vop_reallocblks = ext2_reallocblks,
2033 .vop_write = ext2_write,
2034 .vop_access = ext2_access,
2035 .vop_advlock = ext2_advlock,
2036 .vop_bmap = ext2_bmap,
2037 .vop_old_lookup = ext2_lookup,
2038 .vop_close = ext2_close,
2039 .vop_old_create = ext2_create,
2040 .vop_getattr = ext2_getattr,
2041 .vop_inactive = ext2_inactive,
2042 .vop_old_link = ext2_link,
2043 .vop_old_mkdir = ext2_mkdir,
2044 .vop_old_mknod = ext2_mknod,
2045 .vop_mmap = ext2_mmap,
2046 .vop_open = ext2_open,
2047 .vop_pathconf = ext2_pathconf,
2048 .vop_kqfilter = ext2_kqfilter,
2049 .vop_print = ext2_print,
2050 .vop_readdir = ext2_readdir,
2051 .vop_readlink = ext2_readlink,
2052 .vop_reclaim = ext2_reclaim,
2053 .vop_old_remove = ext2_remove,
2054 .vop_old_rename = ext2_rename,
2055 .vop_old_rmdir = ext2_rmdir,
2056 .vop_setattr = ext2_setattr,
2057 .vop_strategy = ext2_strategy,
2058 .vop_old_symlink = ext2_symlink,
2059 .vop_old_whiteout = ext2_whiteout,
2060 .vop_getpages = vop_stdgetpages,
2061 .vop_putpages = vop_stdputpages
2064 struct vop_ops ext2_spec_vops = {
2065 .vop_default = vop_defaultop,
2066 .vop_fsync = ext2_fsync,
2067 .vop_access = ext2_access,
2068 .vop_close = ext2_close,
2069 .vop_getattr = ext2_getattr,
2070 .vop_inactive = ext2_inactive,
2071 .vop_print = ext2_print,
2072 .vop_read = vop_stdnoread,
2073 .vop_reclaim = ext2_reclaim,
2074 .vop_setattr = ext2_setattr,
2075 .vop_write = vop_stdnowrite
2078 struct vop_ops ext2_fifo_vops = {
2079 .vop_default = ext2_vnoperatefifo,
2080 .vop_fsync = ext2_fsync,
2081 .vop_access = ext2_access,
2082 .vop_close = ext2fifo_close,
2083 .vop_getattr = ext2_getattr,
2084 .vop_inactive = ext2_inactive,
2085 .vop_kqfilter = ext2fifo_kqfilter,
2086 .vop_print = ext2_print,
2087 .vop_read = ext2fifo_read,
2088 .vop_reclaim = ext2_reclaim,
2089 .vop_setattr = ext2_setattr,
2090 .vop_write = ext2fifo_write
2093 VNODEOP_SET(ext2_vnode_vops);
2094 VNODEOP_SET(ext2_spec_vops);
2095 VNODEOP_SET(ext2_fifo_vops);
2101 ext2_vnoperate(struct vop_generic_args *ap)
2103 return (VOCALL(&ext2_vnode_vops, ap));
2107 * ext2_vnoperatefifo()
2110 ext2_vnoperatefifo(struct vop_generic_args *ap)
2112 return (VOCALL(&ext2_fifo_vops, ap));