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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23 * documentation and/or other materials provided with the distribution.
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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>
61 #include <sys/mount.h>
63 #include <sys/vnode.h>
64 #include <sys/dirent.h>
65 #include <sys/lockf.h>
66 #include <sys/event.h>
70 #include <sys/namei.h>
71 #include <sys/signalvar.h>
72 #include <sys/unistd.h>
75 #include <vm/vm_extern.h>
76 #include <vm/vm_zone.h>
77 #include <vm/vnode_pager.h>
80 #include <sys/thread2.h>
82 #include <vfs/fifofs/fifo.h>
87 #include "ext2mount.h"
88 #include "ext2_fs_sb.h"
90 #include "ext2_extern.h"
93 static int ext2_access (struct vop_access_args *);
94 static int ext2_advlock (struct vop_advlock_args *);
95 static int ext2_chmod (struct vnode *, int, struct ucred *);
96 static int ext2_chown (struct vnode *, uid_t, gid_t, struct ucred *);
97 static int ext2_close (struct vop_close_args *);
98 static int ext2_getattr (struct vop_getattr_args *);
99 static int ext2_makeinode (int mode, struct vnode *, struct vnode **, struct componentname *);
100 static int ext2_mmap (struct vop_mmap_args *);
101 static int ext2_open (struct vop_open_args *);
102 static int ext2_pathconf (struct vop_pathconf_args *);
103 static int ext2_print (struct vop_print_args *);
104 static int ext2_readlink (struct vop_readlink_args *);
105 static int ext2_setattr (struct vop_setattr_args *);
106 static int ext2_strategy (struct vop_strategy_args *);
107 static int ext2_whiteout (struct vop_old_whiteout_args *);
108 static int filt_ext2read (struct knote *kn, long hint);
109 static int filt_ext2write (struct knote *kn, long hint);
110 static int filt_ext2vnode (struct knote *kn, long hint);
111 static void filt_ext2detach (struct knote *kn);
112 static int ext2_kqfilter (struct vop_kqfilter_args *ap);
113 static int ext2fifo_close (struct vop_close_args *);
114 static int ext2fifo_kqfilter (struct vop_kqfilter_args *);
115 static int ext2fifo_read (struct vop_read_args *);
116 static int ext2fifo_write (struct vop_write_args *);
118 static int ext2_fsync (struct vop_fsync_args *);
119 static int ext2_read (struct vop_read_args *);
120 static int ext2_write (struct vop_write_args *);
121 static int ext2_remove (struct vop_old_remove_args *);
122 static int ext2_link (struct vop_old_link_args *);
123 static int ext2_rename (struct vop_old_rename_args *);
124 static int ext2_mkdir (struct vop_old_mkdir_args *);
125 static int ext2_rmdir (struct vop_old_rmdir_args *);
126 static int ext2_create (struct vop_old_create_args *);
127 static int ext2_mknod (struct vop_old_mknod_args *);
128 static int ext2_symlink (struct vop_old_symlink_args *);
130 #include "ext2_readwrite.c"
136 #define SETHIGH(q, h) { \
139 tmp.val[_QUAD_HIGHWORD] = (h); \
142 #define SETLOW(q, l) { \
145 tmp.val[_QUAD_LOWWORD] = (l); \
148 #define VN_KNOTE(vp, b) \
149 KNOTE(&vp->v_pollinfo.vpi_kqinfo.ki_note, (b))
151 #define OFSFMT(vp) ((vp)->v_mount->mnt_maxsymlinklen <= 0)
154 * A virgin directory (no blushing please).
155 * Note that the type and namlen fields are reversed relative to ufs.
156 * Also, we don't use `struct odirtemplate', since it would just cause
157 * endianness problems.
159 static struct dirtemplate ext2_mastertemplate = {
160 0, 12, 1, EXT2_FT_DIR, ".",
161 0, DIRBLKSIZ - 12, 2, EXT2_FT_DIR, ".."
163 static struct dirtemplate ext2_omastertemplate = {
164 0, 12, 1, EXT2_FT_UNKNOWN, ".",
165 0, DIRBLKSIZ - 12, 2, EXT2_FT_UNKNOWN, ".."
169 * Create a regular file
171 * ext2_create(struct vnode *a_dvp, struct vnode **a_vpp,
172 * struct componentname *a_cnp, struct vattr *a_vap)
175 ext2_create(struct vop_old_create_args *ap)
180 ext2_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
181 ap->a_dvp, ap->a_vpp, ap->a_cnp);
188 * Synch an open file.
190 * ext2_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
195 static int ext2_fsync_bp(struct buf *bp, void *data);
197 struct ext2_fsync_bp_info {
203 ext2_fsync(struct vop_fsync_args *ap)
205 struct ext2_fsync_bp_info info;
206 struct vnode *vp = ap->a_vp;
210 * XXX why is all this fs specific?
214 * Flush all dirty buffers associated with a vnode.
216 ext2_discard_prealloc(VTOI(vp));
218 lwkt_gettoken(&vp->v_token);
221 info.waitfor = ap->a_waitfor;
222 count = RB_SCAN(buf_rb_tree, &vp->v_rbdirty_tree, NULL,
223 ext2_fsync_bp, &info);
227 if (ap->a_waitfor == MNT_WAIT) {
228 bio_track_wait(&vp->v_track_write, 0, 0);
230 if (!RB_EMPTY(&vp->v_rbdirty_tree)) {
231 vprint("ext2_fsync: dirty", vp);
236 lwkt_reltoken(&vp->v_token);
237 return (EXT2_UPDATE(ap->a_vp, ap->a_waitfor == MNT_WAIT));
241 ext2_fsync_bp(struct buf *bp, void *data)
243 struct ext2_fsync_bp_info *info = data;
245 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT))
247 if ((bp->b_flags & B_DELWRI) == 0)
248 panic("ext2_fsync: not dirty");
252 * Wait for I/O associated with indirect blocks to complete,
253 * since there is no way to quickly wait for them below.
255 if (bp->b_vp == info->vp || (info->waitfor & MNT_NOWAIT))
265 * ext2_mknod(struct vnode *a_dvp, struct vnode **a_vpp,
266 * struct componentname *a_cnp, struct vattr *a_vap)
270 ext2_mknod(struct vop_old_mknod_args *ap)
272 struct vattr *vap = ap->a_vap;
273 struct vnode **vpp = ap->a_vpp;
278 if (vap->va_rmajor != VNOVAL &&
279 makeudev(vap->va_rmajor, vap->va_rminor) == NOUDEV) {
283 error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
284 ap->a_dvp, vpp, ap->a_cnp);
288 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
289 if (vap->va_rmajor != VNOVAL) {
291 * Want to be able to use this to make badblock
292 * inodes, so don't truncate the dev number.
294 ip->i_rdev = makeudev(vap->va_rmajor, vap->va_rminor);
297 * Remove inode, then reload it through VFS_VGET so it is
298 * checked to see if it is an alias of an existing entry in
301 (*vpp)->v_type = VNON;
302 ino = ip->i_number; /* Save this before vgone() invalidates ip. */
303 vgone_vxlocked(*vpp);
305 error = VFS_VGET(ap->a_dvp->v_mount, NULL, ino, vpp);
314 * ext2_remove(struct vnode *a_dvp, struct vnode *a_vp,
315 * struct componentname *a_cnp)
318 ext2_remove(struct vop_old_remove_args *ap)
321 struct vnode *vp = ap->a_vp;
322 struct vnode *dvp = ap->a_dvp;
326 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
327 (VTOI(dvp)->i_flags & APPEND)) {
331 error = ext2_dirremove(dvp, ap->a_cnp);
334 ip->i_flag |= IN_CHANGE;
343 * ext2_link(struct vnode *a_tdvp, struct vnode *a_vp,
344 * struct componentname *a_cnp)
347 ext2_link(struct vop_old_link_args *ap)
349 struct vnode *vp = ap->a_vp;
350 struct vnode *tdvp = ap->a_tdvp;
351 struct componentname *cnp = ap->a_cnp;
355 if (tdvp->v_mount != vp->v_mount) {
359 if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE))) {
363 if ((nlink_t)ip->i_nlink >= LINK_MAX) {
367 if (ip->i_flags & (IMMUTABLE | APPEND)) {
372 ip->i_flag |= IN_CHANGE;
373 error = EXT2_UPDATE(vp, 1);
375 error = ext2_direnter(ip, tdvp, cnp);
378 ip->i_flag |= IN_CHANGE;
388 * Rename system call. fdvp, fvp are ref'd. tvp, tdvp are ref'd and locked.
389 * all vp's are released and must be in an unlocked state on return.
391 * ext2_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
392 * struct componentname *a_fcnp, struct vnode *a_tdvp,
393 * struct vnode *a_tvp, struct componentname *a_tcnp)
396 ext2_rename(struct vop_old_rename_args *ap)
398 struct vnode *tvp = ap->a_tvp;
399 struct vnode *tdvp = ap->a_tdvp;
400 struct vnode *fvp = ap->a_fvp;
401 struct vnode *fdvp = ap->a_fdvp;
402 struct componentname *tcnp = ap->a_tcnp;
403 struct componentname *fcnp = ap->a_fcnp;
404 struct inode *ip, *xp, *dp;
405 struct dirtemplate dirbuf;
406 int doingdirectory = 0, oldparent = 0, newparent = 0;
411 * Check for cross-device rename.
413 if ((fvp->v_mount != tdvp->v_mount) ||
414 (tvp && (fvp->v_mount != tvp->v_mount)) ||
429 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
430 (VTOI(tdvp)->i_flags & APPEND))) {
436 * Renaming a file to itself has no effect. The upper layers should
437 * not call us in that case. Temporarily just warn if they do.
444 if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
448 * fvp, tvp, tdvp locked. fdvp not locked but note that fdvp may
453 if (ip->i_nlink >= LINK_MAX) {
458 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
459 || (dp->i_flags & APPEND)) {
464 if ((ip->i_mode & IFMT) == IFDIR) {
466 * Avoid ".", "..", and aliases of "." for obvious reasons.
468 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
469 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & CNP_ISDOTDOT ||
470 (ip->i_flag & IN_RENAME)) {
475 ip->i_flag |= IN_RENAME;
476 oldparent = dp->i_number;
481 * tvp is non-NULL if the target exists. fvp is still locked but
482 * we will unlock it soon. The 'bad' goto target requires dp and
483 * xp to be correctly assigned.
492 * 1) Bump link count while we're moving stuff
493 * around. If we crash somewhere before
494 * completing our work, the link count
495 * may be wrong, but correctable.
498 ip->i_flag |= IN_CHANGE;
499 if ((error = EXT2_UPDATE(fvp, 1)) != 0) {
505 * If ".." must be changed (ie the directory gets a new
506 * parent) then the source directory must not be in the
507 * directory heirarchy above the target, as this would
508 * orphan everything below the source directory. Also
509 * the user must have write permission in the source so
510 * as to be able to change "..". We must repeat the call
511 * to namei, as the parent directory is unlocked by the
512 * call to checkpath().
514 error = VOP_EACCESS(fvp, VWRITE, tcnp->cn_cred);
518 * tvp (if not NULL) and tdvp are locked. fvp and fdvp are not.
519 * dp and xp are set according to tdvp and tvp.
521 if (oldparent != dp->i_number)
522 newparent = dp->i_number;
523 if (doingdirectory && newparent) {
524 if (error) /* write access check above */
528 * Prepare for relookup, get rid of xp
536 * checkpath vput()'s tdvp (VTOI(dp)) on return no matter what,
537 * get an extra ref so we wind up with just an unlocked, ref'd
538 * tdvp. The 'out' target skips xp and tdvp cleanups. Our
539 * tdvp is now unlocked so we have to clean it up ourselves.
542 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
543 tcnp->cn_flags |= CNP_PDIRUNLOCK;
549 * relookup no longer messes with the ref count. An unlocked
550 * tdvp must be passed and if no error occurs a locked tdvp
551 * will be returned. We have to use the out target again.
553 error = relookup(tdvp, &tvp, tcnp);
555 if (tcnp->cn_flags & CNP_PDIRUNLOCK)
563 * tdvp is locked at this point. in the RENAME case tvp may
564 * be NULL without an error, assign xp accordingly. The
565 * 'bad' target can be used again after this.
572 * 2) If target doesn't exist, link the target
573 * to the source and unlink the source.
574 * Otherwise, rewrite the target directory
575 * entry to reference the source inode and
576 * expunge the original entry's existence.
578 * tdvp and tvp are cleaned up by this code. tvp is only good if
582 if (dp->i_dev != ip->i_dev)
583 panic("ext2_rename: EXDEV");
585 * Account for ".." in new directory.
586 * When source and destination have the same
587 * parent we don't fool with the link count.
589 if (doingdirectory && newparent) {
590 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
595 dp->i_flag |= IN_CHANGE;
596 error = EXT2_UPDATE(tdvp, 1);
600 error = ext2_direnter(ip, tdvp, tcnp);
602 if (doingdirectory && newparent) {
604 dp->i_flag |= IN_CHANGE;
605 EXT2_UPDATE(tdvp, 1);
611 * manual cleanup, we can't use the bad or out target after
616 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
617 panic("ext2_rename: EXDEV");
619 * Short circuit rename(foo, foo).
621 if (xp->i_number == ip->i_number)
622 panic("ext2_rename: same file");
624 * If the parent directory is "sticky", then the user must
625 * own the parent directory, or the destination of the rename,
626 * otherwise the destination may not be changed (except by
627 * root). This implements append-only directories.
629 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
630 tcnp->cn_cred->cr_uid != dp->i_uid &&
631 xp->i_uid != tcnp->cn_cred->cr_uid) {
636 * Target must be empty if a directory and have no links
637 * to it. Also, ensure source and target are compatible
638 * (both directories, or both not directories).
640 if ((xp->i_mode&IFMT) == IFDIR) {
641 if (! ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
646 if (!doingdirectory) {
650 } else if (doingdirectory) {
654 error = ext2_dirrewrite(dp, ip, tcnp);
658 * If the target directory is in the same
659 * directory as the source directory,
660 * decrement the link count on the parent
661 * of the target directory.
663 if (doingdirectory && !newparent) {
665 dp->i_flag |= IN_CHANGE;
669 * manual cleanup, we can't use the bad or out target after
675 * Adjust the link count of the target to
676 * reflect the dirrewrite above. If this is
677 * a directory it is empty and there are
678 * no links to it, so we can squash the inode and
679 * any space associated with it. We disallowed
680 * renaming over top of a directory with links to
681 * it above, as the remaining link would point to
682 * a directory without "." or ".." entries.
685 if (doingdirectory) {
686 if (--xp->i_nlink != 0)
687 panic("ext2_rename: linked directory");
688 error = EXT2_TRUNCATE(tvp, (off_t)0, IO_SYNC,
691 xp->i_flag |= IN_CHANGE;
697 * tvp and tdvp have been cleaned up. The bad and out targets may
698 * not be used. fvp and fdvp are ref'd but not locked. ip
699 * still represents the old fvp and ip->i_flag may still have IN_RENAME
700 * set (if doingdirectory).
704 * 3) Unlink the source.
706 * fdvp is locked and ref'd. ap->a_fvp holds the old lookup unlocked
707 * and ref'd, fvp will hold the new lookup locked and ref'd.
709 * After the relookup ap->a_fvp must be released as part of our
710 * cleanup, not just fdvp and fvp. And, on success, fdvp and
711 * fvp will be locked so the bad and out targets cannot be used.
713 fcnp->cn_flags &= ~CNP_MODMASK;
714 fcnp->cn_flags |= CNP_LOCKPARENT;
715 KKASSERT(fcnp->cn_flags & CNP_PDIRUNLOCK);
716 error = relookup(fdvp, &fvp, fcnp);
719 * From name has disappeared.
722 panic("ext2_rename: lost dir entry");
723 /* ip->i_flag only sets IN_RENAME if doingdirectory */
725 if (fcnp->cn_flags & CNP_PDIRUNLOCK)
731 KKASSERT((fcnp->cn_flags & CNP_PDIRUNLOCK) == 0);
734 * This case shouldn't occur
738 * From name has disappeared.
741 panic("ext2_rename: lost dir entry");
742 /* ip->i_flag only sets IN_RENAME if doingdirectory */
750 * fvp and fdvp are both ref'd and locked.
756 * Ensure that the directory entry still exists and has not
757 * changed while the new name has been entered. If the source is
758 * a file then the entry may have been unlinked or renamed. In
759 * either case there is no further work to be done. If the source
760 * is a directory then it cannot have been rmdir'ed; its link
761 * count of three would cause a rmdir to fail with ENOTEMPTY.
762 * The IN_RENAME flag ensures that it cannot be moved by another
767 panic("ext2_rename: lost dir entry");
768 /* ip->i_flag only sets IN_RENAME if doingdirectory */
771 * If the source is a directory with a
772 * new parent, the link count of the old
773 * parent directory must be decremented
774 * and ".." set to point to the new parent.
776 if (doingdirectory && newparent) {
778 dp->i_flag |= IN_CHANGE;
779 error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
780 sizeof (struct dirtemplate), (off_t)0,
781 UIO_SYSSPACE, IO_NODELOCKED,
782 tcnp->cn_cred, NULL);
784 /* Like ext2 little-endian: */
785 namlen = dirbuf.dotdot_type;
787 dirbuf.dotdot_name[0] != '.' ||
788 dirbuf.dotdot_name[1] != '.') {
789 ext2_dirbad(xp, (doff_t)12,
790 "rename: mangled dir");
792 dirbuf.dotdot_ino = newparent;
793 vn_rdwr(UIO_WRITE, fvp,
795 sizeof (struct dirtemplate),
796 (off_t)0, UIO_SYSSPACE,
797 IO_NODELOCKED|IO_SYNC,
798 tcnp->cn_cred, NULL);
802 error = ext2_dirremove(fdvp, fcnp);
805 xp->i_flag |= IN_CHANGE;
807 xp->i_flag &= ~IN_RENAME;
821 ip->i_flag &= ~IN_RENAME;
822 if (vn_lock(fvp, LK_EXCLUSIVE) == 0) {
824 ip->i_flag |= IN_CHANGE;
825 ip->i_flag &= ~IN_RENAME;
836 * ext2_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
837 * struct componentname *a_cnp, struct vattr *a_vap)
840 ext2_mkdir(struct vop_old_mkdir_args *ap)
842 struct vnode *dvp = ap->a_dvp;
843 struct vattr *vap = ap->a_vap;
844 struct componentname *cnp = ap->a_cnp;
845 struct inode *ip, *dp;
847 struct dirtemplate dirtemplate, *dtp;
851 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
855 dmode = vap->va_mode & 0777;
858 * Must simulate part of ext2_makeinode here to acquire the inode,
859 * but not have it entered in the parent directory. The entry is
860 * made later after writing "." and ".." entries.
862 error = EXT2_VALLOC(dvp, dmode, cnp->cn_cred, &tvp);
866 ip->i_gid = dp->i_gid;
870 struct ucred ucred, *ucp;
874 * if we are hacking owners here, (only do this where told to)
875 * and we are not giving it TOO root, (would subvert quotas)
876 * then go ahead and give it to the other user.
877 * The new directory also inherits the SUID bit.
878 * If user's UID and dir UID are the same,
879 * 'give it away' so that the SUID is still forced on.
881 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
882 (dp->i_mode & ISUID) && dp->i_uid) {
884 ip->i_uid = dp->i_uid;
886 if (dp->i_uid != cnp->cn_cred->cr_uid) {
888 * make sure the correct user gets charged
890 * Make a dummy credential for the victim.
891 * XXX This seems to never be accessed out of
892 * our context so a stack variable is ok.
895 ucred.cr_uid = ip->i_uid;
896 ucred.cr_ngroups = 1;
897 ucred.cr_groups[0] = dp->i_gid;
902 ip->i_uid = cnp->cn_cred->cr_uid;
905 if ((error = ext2_getinoquota(ip)) ||
906 (error = ext2_chkiq(ip, 1, ucp, 0))) {
907 EXT2_VFREE(tvp, ip->i_number, dmode);
914 ip->i_uid = cnp->cn_cred->cr_uid;
916 if ((error = ext2_getinoquota(ip)) ||
917 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
918 EXT2_VFREE(tvp, ip->i_number, dmode);
924 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
926 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
928 if (cnp->cn_flags & CNP_ISWHITEOUT)
929 ip->i_flags |= UF_OPAQUE;
930 error = EXT2_UPDATE(tvp, 1);
933 * The vnode must have a VM object in order to issue buffer cache
936 vinitvmio(tvp, 0, PAGE_SIZE, -1);
939 * Bump link count in parent directory
940 * to reflect work done below. Should
941 * be done before reference is created
942 * so reparation is possible if we crash.
945 dp->i_flag |= IN_CHANGE;
946 error = EXT2_UPDATE(dvp, 1);
950 /* Initialize directory with "." and ".." from static template. */
951 if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs->s_es,
952 EXT2_FEATURE_INCOMPAT_FILETYPE))
953 dtp = &ext2_mastertemplate;
955 dtp = &ext2_omastertemplate;
957 dirtemplate.dot_ino = ip->i_number;
958 dirtemplate.dotdot_ino = dp->i_number;
959 /* note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE
960 * so let's just redefine it - for this function only
963 #define DIRBLKSIZ VTOI(dvp)->i_e2fs->s_blocksize
964 dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
965 error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
966 sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
967 IO_NODELOCKED|IO_SYNC, cnp->cn_cred, NULL);
970 dp->i_flag |= IN_CHANGE;
973 if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
974 panic("ext2_mkdir: blksize"); /* XXX should grow with balloc() */
976 ip->i_size = DIRBLKSIZ;
977 ip->i_flag |= IN_CHANGE;
980 /* Directory set up, now install its entry in the parent directory. */
981 error = ext2_direnter(ip, dvp, cnp);
984 dp->i_flag |= IN_CHANGE;
988 * No need to do an explicit VOP_TRUNCATE here, vrele will do this
989 * for us because we set the link count to 0.
993 ip->i_flag |= IN_CHANGE;
1000 #define DIRBLKSIZ DEV_BSIZE
1004 * Rmdir system call.
1006 * ext2_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
1007 * struct componentname *a_cnp)
1010 ext2_rmdir(struct vop_old_rmdir_args *ap)
1012 struct vnode *vp = ap->a_vp;
1013 struct vnode *dvp = ap->a_dvp;
1014 struct componentname *cnp = ap->a_cnp;
1015 struct inode *ip, *dp;
1022 * Verify the directory is empty (and valid).
1023 * (Rmdir ".." won't be valid since
1024 * ".." will contain a reference to
1025 * the current directory and thus be
1029 if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
1033 if ((dp->i_flags & APPEND)
1034 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1039 * Delete reference to directory before purging
1040 * inode. If we crash in between, the directory
1041 * will be reattached to lost+found,
1043 error = ext2_dirremove(dvp, cnp);
1047 dp->i_flag |= IN_CHANGE;
1050 * Truncate inode. The only stuff left
1051 * in the directory is "." and "..". The
1052 * "." reference is inconsequential since
1053 * we're quashing it. The ".." reference
1054 * has already been adjusted above. We've
1055 * removed the "." reference and the reference
1056 * in the parent directory, but there may be
1057 * other hard links so decrement by 2 and
1058 * worry about them later.
1061 error = EXT2_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
1062 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1068 * symlink -- make a symbolic link
1070 * ext2_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
1071 * struct componentname *a_cnp, struct vattr *a_vap,
1075 ext2_symlink(struct vop_old_symlink_args *ap)
1077 struct vnode *vp, **vpp = ap->a_vpp;
1081 error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
1086 len = strlen(ap->a_target);
1087 if (len < vp->v_mount->mnt_maxsymlinklen) {
1089 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
1091 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1094 * Make sure we have a VM object in order to use
1097 if (vp->v_object == NULL)
1098 vinitvmio(vp, 0, PAGE_SIZE, -1);
1100 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
1101 UIO_SYSSPACE, IO_NODELOCKED,
1102 ap->a_cnp->cn_cred, NULL);
1112 * Allocate a new inode.
1115 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
1116 struct componentname *cnp)
1118 struct inode *ip, *pdir;
1124 if ((mode & IFMT) == 0)
1127 error = EXT2_VALLOC(dvp, mode, cnp->cn_cred, &tvp);
1132 ip->i_gid = pdir->i_gid;
1136 struct ucred ucred, *ucp;
1141 * not the owner of the directory,
1142 * and we are hacking owners here, (only do this where told to)
1143 * and we are not giving it TOO root, (would subvert quotas)
1144 * then go ahead and give it to the other user.
1145 * Note that this drops off the execute bits for security.
1147 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
1148 (pdir->i_mode & ISUID) &&
1149 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
1150 ip->i_uid = pdir->i_uid;
1154 * make sure the correct user gets charged
1156 * Quickly knock up a dummy credential for the victim.
1157 * XXX This seems to never be accessed out of our
1158 * context so a stack variable is ok.
1161 ucred.cr_uid = ip->i_uid;
1162 ucred.cr_ngroups = 1;
1163 ucred.cr_groups[0] = pdir->i_gid;
1167 ip->i_uid = cnp->cn_cred->cr_uid;
1171 if ((error = ext2_getinoquota(ip)) ||
1172 (error = ext2_chkiq(ip, 1, ucp, 0))) {
1173 EXT2_VFREE(tvp, ip->i_number, mode);
1180 ip->i_uid = cnp->cn_cred->cr_uid;
1182 if ((error = ext2_getinoquota(ip)) ||
1183 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
1184 EXT2_VFREE(tvp, ip->i_number, mode);
1190 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
1192 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
1194 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
1195 priv_check_cred(cnp->cn_cred, PRIV_VFS_SETGID, 0))
1196 ip->i_mode &= ~ISGID;
1198 if (cnp->cn_flags & CNP_ISWHITEOUT)
1199 ip->i_flags |= UF_OPAQUE;
1202 * Regular files and directories need VM objects. Softlinks do
1203 * not (not immediately anyway).
1205 if (tvp->v_type == VREG || tvp->v_type == VDIR)
1206 vinitvmio(tvp, 0, PAGE_SIZE, -1);
1209 * Make sure inode goes to disk before directory entry.
1211 error = EXT2_UPDATE(tvp, 1);
1214 error = ext2_direnter(ip, dvp, cnp);
1223 * Write error occurred trying to update the inode
1224 * or the directory so must deallocate the inode.
1227 ip->i_flag |= IN_CHANGE;
1233 ext2_itimes(struct vnode *vp)
1239 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
1241 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp))
1242 ip->i_flag |= IN_LAZYMOD;
1244 ip->i_flag |= IN_MODIFIED;
1245 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
1247 if (ip->i_flag & IN_ACCESS) {
1248 ip->i_atime = ts.tv_sec;
1249 ip->i_atimensec = ts.tv_nsec;
1251 if (ip->i_flag & IN_UPDATE) {
1252 ip->i_mtime = ts.tv_sec;
1253 ip->i_mtimensec = ts.tv_nsec;
1256 if (ip->i_flag & IN_CHANGE) {
1257 ip->i_ctime = ts.tv_sec;
1258 ip->i_ctimensec = ts.tv_nsec;
1261 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
1269 * ext2_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
1270 * struct file *a_fp)
1275 ext2_open(struct vop_open_args *ap)
1277 struct vnode *vp = ap->a_vp;
1280 * Files marked append-only must be opened for appending.
1282 if ((VTOI(vp)->i_flags & APPEND) &&
1283 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) {
1286 return (vop_stdopen(ap));
1292 * Update the times on the inode.
1294 * ext2_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1299 ext2_close(struct vop_close_args *ap)
1301 struct vnode *vp = ap->a_vp;
1303 if (vp->v_sysref.refcnt > 1)
1305 return (vop_stdclose(ap));
1309 * ext2_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
1313 ext2_access(struct vop_access_args *ap)
1315 struct vnode *vp = ap->a_vp;
1316 struct inode *ip = VTOI(vp);
1320 if (ap->a_mode & VWRITE) {
1321 switch (vp->v_type) {
1325 if ((error = ext2_getinoquota(ip)) != 0)
1334 error = vop_helper_access(ap, ip->i_uid, ip->i_gid, ip->i_mode,
1340 * ext2_getattr(struct vnode *a_vp, struct vattr *a_vap)
1345 ext2_getattr(struct vop_getattr_args *ap)
1347 struct vnode *vp = ap->a_vp;
1348 struct inode *ip = VTOI(vp);
1349 struct vattr *vap = ap->a_vap;
1353 * Copy from inode table
1355 vap->va_fsid = dev2udev(ip->i_dev);
1356 vap->va_fileid = ip->i_number;
1357 vap->va_mode = ip->i_mode & ~IFMT;
1358 vap->va_nlink = VFSTOEXT2(vp->v_mount)->um_i_effnlink_valid ?
1359 ip->i_effnlink : ip->i_nlink;
1360 vap->va_uid = ip->i_uid;
1361 vap->va_gid = ip->i_gid;
1362 vap->va_rmajor = umajor(ip->i_rdev);
1363 vap->va_rminor = uminor(ip->i_rdev);
1364 vap->va_size = ip->i_din.di_size;
1365 vap->va_atime.tv_sec = ip->i_atime;
1366 vap->va_atime.tv_nsec = ip->i_atimensec;
1367 vap->va_mtime.tv_sec = ip->i_mtime;
1368 vap->va_mtime.tv_nsec = ip->i_mtimensec;
1369 vap->va_ctime.tv_sec = ip->i_ctime;
1370 vap->va_ctime.tv_nsec = ip->i_ctimensec;
1371 vap->va_flags = ip->i_flags;
1372 vap->va_gen = ip->i_gen;
1373 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
1374 vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
1375 vap->va_type = IFTOVT(ip->i_mode);
1376 vap->va_filerev = ip->i_modrev;
1381 * Set attribute vnode op. called from several syscalls
1383 * ext2_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
1387 ext2_setattr(struct vop_setattr_args *ap)
1389 struct vattr *vap = ap->a_vap;
1390 struct vnode *vp = ap->a_vp;
1391 struct inode *ip = VTOI(vp);
1392 struct ucred *cred = ap->a_cred;
1396 * Check for unsettable attributes.
1398 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
1399 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
1400 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
1401 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
1404 if (vap->va_flags != VNOVAL) {
1405 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1407 if (cred->cr_uid != ip->i_uid &&
1408 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)))
1411 * Note that a root chflags becomes a user chflags when
1412 * we are jailed, unless the jail.chflags_allowed sysctl
1415 if (cred->cr_uid == 0 &&
1416 (!jailed(cred) || jail_chflags_allowed)) {
1418 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) &&
1421 ip->i_flags = vap->va_flags;
1424 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
1425 (vap->va_flags & UF_SETTABLE) != vap->va_flags)
1427 ip->i_flags &= SF_SETTABLE;
1428 ip->i_flags |= (vap->va_flags & UF_SETTABLE);
1430 ip->i_flag |= IN_CHANGE;
1431 if (vap->va_flags & (IMMUTABLE | APPEND))
1434 if (ip->i_flags & (IMMUTABLE | APPEND))
1437 * Go through the fields and update iff not VNOVAL.
1439 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
1440 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1442 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred)) != 0)
1445 if (vap->va_size != VNOVAL) {
1447 * Disallow write attempts on read-only filesystems;
1448 * unless the file is a socket, fifo, or a block or
1449 * character device resident on the filesystem.
1451 switch (vp->v_type) {
1456 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1462 if ((error = EXT2_TRUNCATE(vp, vap->va_size, 0, cred)) != 0)
1466 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
1467 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1469 if (cred->cr_uid != ip->i_uid &&
1470 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) &&
1471 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1472 (error = VOP_EACCESS(vp, VWRITE, cred))))
1474 if (vap->va_atime.tv_sec != VNOVAL)
1475 ip->i_flag |= IN_ACCESS;
1476 if (vap->va_mtime.tv_sec != VNOVAL)
1477 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1479 if (vap->va_atime.tv_sec != VNOVAL) {
1480 ip->i_atime = vap->va_atime.tv_sec;
1481 ip->i_atimensec = vap->va_atime.tv_nsec;
1483 if (vap->va_mtime.tv_sec != VNOVAL) {
1484 ip->i_mtime = vap->va_mtime.tv_sec;
1485 ip->i_mtimensec = vap->va_mtime.tv_nsec;
1487 error = EXT2_UPDATE(vp, 0);
1492 if (vap->va_mode != (mode_t)VNOVAL) {
1493 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1495 error = ext2_chmod(vp, (int)vap->va_mode, cred);
1497 VN_KNOTE(vp, NOTE_ATTRIB);
1502 * Change the mode on a file.
1503 * Inode must be locked before calling.
1506 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred)
1508 struct inode *ip = VTOI(vp);
1511 if (cred->cr_uid != ip->i_uid) {
1512 error = priv_check_cred(cred, PRIV_VFS_CHMOD, 0);
1517 if (vp->v_type != VDIR && (mode & S_ISTXT))
1519 if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
1522 ip->i_mode &= ~ALLPERMS;
1523 ip->i_mode |= (mode & ALLPERMS);
1524 ip->i_flag |= IN_CHANGE;
1529 * Perform chown operation on inode ip;
1530 * inode must be locked prior to call.
1533 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred)
1535 struct inode *ip = VTOI(vp);
1544 if (uid == (uid_t)VNOVAL)
1546 if (gid == (gid_t)VNOVAL)
1549 * If we don't own the file, are trying to change the owner
1550 * of the file, or are not a member of the target group,
1551 * the caller must be superuser or the call fails.
1553 if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
1554 (gid != ip->i_gid && !(cred->cr_gid == gid ||
1555 groupmember(gid, cred)))) &&
1556 (error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0)))
1561 if ((error = ext2_getinoquota(ip)) != 0)
1564 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1565 ip->i_dquot[USRQUOTA] = NODQUOT;
1568 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1569 ip->i_dquot[GRPQUOTA] = NODQUOT;
1571 change = ip->i_blocks;
1572 (void) ext2_chkdq(ip, -change, cred, CHOWN);
1573 (void) ext2_chkiq(ip, -1, cred, CHOWN);
1574 for (i = 0; i < MAXQUOTAS; i++) {
1575 ext2_dqrele(vp, ip->i_dquot[i]);
1576 ip->i_dquot[i] = NODQUOT;
1582 if ((error = ext2_getinoquota(ip)) == 0) {
1584 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1585 ip->i_dquot[USRQUOTA] = NODQUOT;
1588 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1589 ip->i_dquot[GRPQUOTA] = NODQUOT;
1591 if ((error = ext2_chkdq(ip, change, cred, CHOWN)) == 0) {
1592 if ((error = ext2_chkiq(ip, 1, cred, CHOWN)) == 0)
1595 (void)ext2_chkdq(ip, -change, cred, CHOWN|FORCE);
1597 for (i = 0; i < MAXQUOTAS; i++) {
1598 ext2_dqrele(vp, ip->i_dquot[i]);
1599 ip->i_dquot[i] = NODQUOT;
1604 if (ext2_getinoquota(ip) == 0) {
1606 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1607 ip->i_dquot[USRQUOTA] = NODQUOT;
1610 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1611 ip->i_dquot[GRPQUOTA] = NODQUOT;
1613 (void) ext2_chkdq(ip, change, cred, FORCE|CHOWN);
1614 (void) ext2_chkiq(ip, 1, cred, FORCE|CHOWN);
1615 (void) ext2_getinoquota(ip);
1619 if (ext2_getinoquota(ip))
1620 panic("ext2_chown: lost quota");
1622 ip->i_flag |= IN_CHANGE;
1623 if (cred->cr_uid != 0 && (ouid != uid || ogid != gid))
1624 ip->i_mode &= ~(ISUID | ISGID);
1631 * NB Currently unsupported.
1633 * ext2_mmap(struct vnode *a_vp, int a_fflags, struct ucred *a_cred)
1638 ext2_mmap(struct vop_mmap_args *ap)
1644 * whiteout vnode call
1646 * ext2_whiteout(struct vnode *a_dvp, struct componentname *a_cnp, int a_flags)
1650 ext2_whiteout(struct vop_old_whiteout_args *ap)
1652 return (EOPNOTSUPP);
1656 * Return target name of a symbolic link
1658 * ext2_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred)
1662 ext2_readlink(struct vop_readlink_args *ap)
1664 struct vnode *vp = ap->a_vp;
1665 struct inode *ip = VTOI(vp);
1669 if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
1670 (ip->i_din.di_blocks == 0)) { /* XXX - for old fastlink support */
1671 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
1674 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
1678 * Calculate the logical to physical mapping if not done already,
1679 * then call the device strategy routine.
1681 * In order to be able to swap to a file, the VOP_BMAP operation may not
1682 * deadlock on memory. See ext2_bmap() for details.
1684 * ext2_strategy(struct vnode *a_vp, struct bio *a_bio)
1688 ext2_strategy(struct vop_strategy_args *ap)
1690 struct bio *bio = ap->a_bio;
1692 struct buf *bp = bio->bio_buf;
1693 struct vnode *vp = ap->a_vp;
1698 if (vp->v_type == VBLK || vp->v_type == VCHR)
1699 panic("ext2_strategy: spec");
1700 nbio = push_bio(bio);
1701 if (nbio->bio_offset == NOOFFSET) {
1702 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
1703 NULL, NULL, bp->b_cmd);
1705 bp->b_error = error;
1706 bp->b_flags |= B_ERROR;
1707 /* I/O was never started on nbio, must biodone(bio) */
1711 if (nbio->bio_offset == NOOFFSET)
1714 if (nbio->bio_offset == NOOFFSET) {
1715 /* I/O was never started on nbio, must biodone(bio) */
1719 vn_strategy(ip->i_devvp, nbio);
1724 * Print out the contents of an inode.
1726 * ext2_print(struct vnode *a_vp)
1730 ext2_print(struct vop_print_args *ap)
1732 struct vnode *vp = ap->a_vp;
1733 struct inode *ip = VTOI(vp);
1735 kprintf("tag VT_EXT2FS, ino %lu, on dev %s (%d, %d)",
1736 (u_long)ip->i_number, devtoname(ip->i_dev), major(ip->i_dev),
1738 if (vp->v_type == VFIFO)
1740 lockmgr_printinfo(&vp->v_lock);
1746 * Read wrapper for fifos.
1748 * ext2fifo_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1749 * struct ucred *a_cred)
1753 ext2fifo_read(struct vop_read_args *ap)
1760 resid = uio->uio_resid;
1761 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1762 ip = VTOI(ap->a_vp);
1763 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL &&
1764 (uio->uio_resid != resid || (error == 0 && resid != 0)))
1765 VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
1770 * Write wrapper for fifos.
1772 * ext2fifo_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1773 * struct ucred *a_cred)
1777 ext2fifo_write(struct vop_write_args *ap)
1784 resid = uio->uio_resid;
1785 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1786 ip = VTOI(ap->a_vp);
1787 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1788 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1793 * Close wrapper for fifos.
1795 * Update the times on the inode then do device close.
1797 * ext2fifo_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1801 ext2fifo_close(struct vop_close_args *ap)
1803 struct vnode *vp = ap->a_vp;
1805 if (vp->v_sysref.refcnt > 1)
1807 return (VOCALL(&fifo_vnode_vops, &ap->a_head));
1811 * Kqfilter wrapper for fifos.
1813 * Fall through to ext2 kqfilter routines if needed
1817 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
1821 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1823 error = ext2_kqfilter(ap);
1828 * Return POSIX pathconf information applicable to ext2 filesystems.
1830 * ext2_pathconf(struct vnode *a_vp, int a_name, int *a_retval)
1834 ext2_pathconf(struct vop_pathconf_args *ap)
1836 switch (ap->a_name) {
1838 *ap->a_retval = LINK_MAX;
1841 *ap->a_retval = NAME_MAX;
1844 *ap->a_retval = PATH_MAX;
1847 *ap->a_retval = PIPE_BUF;
1849 case _PC_CHOWN_RESTRICTED:
1862 * Advisory record locking support
1864 * ext2_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, struct flock *a_fl,
1869 ext2_advlock(struct vop_advlock_args *ap)
1871 struct inode *ip = VTOI(ap->a_vp);
1873 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size));
1877 * Initialize the vnode associated with a new inode, handle aliased
1881 ext2_vinit(struct mount *mntp, struct vnode **vpp)
1890 switch(vp->v_type = IFTOVT(ip->i_mode)) {
1893 vp->v_ops = &mntp->mnt_vn_spec_ops;
1894 addaliasu(vp, umajor(ip->i_rdev), uminor(ip->i_rdev));
1897 vp->v_ops = &mntp->mnt_vn_fifo_ops;
1901 vinitvmio(vp, ip->i_size, PAGE_SIZE, -1); /* XXX */
1904 if ((ip->i_size >= vp->v_mount->mnt_maxsymlinklen) &&
1905 ip->i_din.di_blocks != 0
1907 vinitvmio(vp, ip->i_size, PAGE_SIZE, -1);
1915 if (ip->i_number == ROOTINO)
1916 vp->v_flag |= VROOT;
1918 * Initialize modrev times
1920 getmicrouptime(&tv);
1921 SETHIGH(ip->i_modrev, tv.tv_sec);
1922 SETLOW(ip->i_modrev, tv.tv_usec * 4294);
1927 static struct filterops ext2read_filtops =
1928 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2read };
1929 static struct filterops ext2write_filtops =
1930 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2write };
1931 static struct filterops ext2vnode_filtops =
1932 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2vnode };
1935 * ext2_kqfilter(struct vnode *a_vp, struct knote *a_kn)
1938 ext2_kqfilter(struct vop_kqfilter_args *ap)
1940 struct vnode *vp = ap->a_vp;
1941 struct knote *kn = ap->a_kn;
1943 switch (kn->kn_filter) {
1945 kn->kn_fop = &ext2read_filtops;
1948 kn->kn_fop = &ext2write_filtops;
1951 kn->kn_fop = &ext2vnode_filtops;
1954 return (EOPNOTSUPP);
1957 kn->kn_hook = (caddr_t)vp;
1959 /* XXX: kq token actually protects the list */
1960 lwkt_gettoken(&vp->v_token);
1961 knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1962 lwkt_reltoken(&vp->v_token);
1968 filt_ext2detach(struct knote *kn)
1970 struct vnode *vp = (struct vnode *)kn->kn_hook;
1972 lwkt_gettoken(&vp->v_token);
1973 knote_remove(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1974 lwkt_reltoken(&vp->v_token);
1979 filt_ext2read(struct knote *kn, long hint)
1981 struct vnode *vp = (struct vnode *)kn->kn_hook;
1982 struct inode *ip = VTOI(vp);
1986 * filesystem is gone, so set the EOF flag and schedule
1987 * the knote for deletion.
1989 if (hint == NOTE_REVOKE) {
1990 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
1993 off = ip->i_size - kn->kn_fp->f_offset;
1994 kn->kn_data = (off < INTPTR_MAX) ? off : INTPTR_MAX;
1995 if (kn->kn_sfflags & NOTE_OLDAPI)
1997 return (kn->kn_data != 0);
2002 filt_ext2write(struct knote *kn, long hint)
2005 * filesystem is gone, so set the EOF flag and schedule
2006 * the knote for deletion.
2008 if (hint == NOTE_REVOKE)
2009 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
2016 filt_ext2vnode(struct knote *kn, long hint)
2018 if (kn->kn_sfflags & hint)
2019 kn->kn_fflags |= hint;
2020 if (hint == NOTE_REVOKE) {
2021 kn->kn_flags |= (EV_EOF | EV_NODATA);
2024 return (kn->kn_fflags != 0);
2027 struct vop_ops ext2_vnode_vops = {
2028 .vop_default = vop_defaultop,
2029 .vop_fsync = ext2_fsync,
2030 .vop_read = ext2_read,
2031 .vop_reallocblks = ext2_reallocblks,
2032 .vop_write = ext2_write,
2033 .vop_access = ext2_access,
2034 .vop_advlock = ext2_advlock,
2035 .vop_bmap = ext2_bmap,
2036 .vop_old_lookup = ext2_lookup,
2037 .vop_close = ext2_close,
2038 .vop_old_create = ext2_create,
2039 .vop_getattr = ext2_getattr,
2040 .vop_inactive = ext2_inactive,
2041 .vop_old_link = ext2_link,
2042 .vop_old_mkdir = ext2_mkdir,
2043 .vop_old_mknod = ext2_mknod,
2044 .vop_mmap = ext2_mmap,
2045 .vop_open = ext2_open,
2046 .vop_pathconf = ext2_pathconf,
2047 .vop_kqfilter = ext2_kqfilter,
2048 .vop_print = ext2_print,
2049 .vop_readdir = ext2_readdir,
2050 .vop_readlink = ext2_readlink,
2051 .vop_reclaim = ext2_reclaim,
2052 .vop_old_remove = ext2_remove,
2053 .vop_old_rename = ext2_rename,
2054 .vop_old_rmdir = ext2_rmdir,
2055 .vop_setattr = ext2_setattr,
2056 .vop_strategy = ext2_strategy,
2057 .vop_old_symlink = ext2_symlink,
2058 .vop_old_whiteout = ext2_whiteout,
2059 .vop_getpages = vop_stdgetpages,
2060 .vop_putpages = vop_stdputpages
2063 struct vop_ops ext2_spec_vops = {
2064 .vop_default = vop_defaultop,
2065 .vop_fsync = ext2_fsync,
2066 .vop_access = ext2_access,
2067 .vop_close = ext2_close,
2068 .vop_getattr = ext2_getattr,
2069 .vop_inactive = ext2_inactive,
2070 .vop_print = ext2_print,
2071 .vop_read = vop_stdnoread,
2072 .vop_reclaim = ext2_reclaim,
2073 .vop_setattr = ext2_setattr,
2074 .vop_write = vop_stdnowrite
2077 struct vop_ops ext2_fifo_vops = {
2078 .vop_default = ext2_vnoperatefifo,
2079 .vop_fsync = ext2_fsync,
2080 .vop_access = ext2_access,
2081 .vop_close = ext2fifo_close,
2082 .vop_getattr = ext2_getattr,
2083 .vop_inactive = ext2_inactive,
2084 .vop_kqfilter = ext2fifo_kqfilter,
2085 .vop_print = ext2_print,
2086 .vop_read = ext2fifo_read,
2087 .vop_reclaim = ext2_reclaim,
2088 .vop_setattr = ext2_setattr,
2089 .vop_write = ext2fifo_write
2092 VNODEOP_SET(ext2_vnode_vops);
2093 VNODEOP_SET(ext2_spec_vops);
2094 VNODEOP_SET(ext2_fifo_vops);
2100 ext2_vnoperate(struct vop_generic_args *ap)
2102 return (VOCALL(&ext2_vnode_vops, ap));
2106 * ext2_vnoperatefifo()
2109 ext2_vnoperatefifo(struct vop_generic_args *ap)
2111 return (VOCALL(&ext2_fifo_vops, ap));