2 * modified for EXT2FS support in Lites 1.1
4 * Aug 1995, Godmar Back (gback@cs.utah.edu)
5 * University of Utah, Department of Computer Science
8 * Copyright (c) 1982, 1986, 1989, 1993
9 * The Regents of the University of California. All rights reserved.
10 * (c) UNIX System Laboratories, Inc.
11 * All or some portions of this file are derived from material licensed
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13 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
14 * the permission of UNIX System Laboratories, Inc.
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17 * modification, are permitted provided that the following conditions
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20 * notice, this list of conditions and the following disclaimer.
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26 * This product includes software developed by the University of
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44 * @(#)ufs_vnops.c 8.27 (Berkeley) 5/27/95
45 * @(#)ext2_vnops.c 8.7 (Berkeley) 2/3/94
46 * $FreeBSD: src/sys/gnu/ext2fs/ext2_vnops.c,v 1.51.2.2 2003/01/02 17:26:18 bde Exp $
47 * $DragonFly: src/sys/vfs/gnu/ext2fs/ext2_vnops.c,v 1.43 2008/06/19 23:27:39 dillon Exp $
50 #include "opt_quota.h"
51 #include "opt_suiddir.h"
53 #include <sys/param.h>
54 #include <sys/systm.h>
55 #include <sys/resourcevar.h>
56 #include <sys/kernel.h>
58 #include <sys/fcntl.h>
63 #include <sys/mount.h>
65 #include <sys/vnode.h>
66 #include <sys/dirent.h>
67 #include <sys/lockf.h>
68 #include <sys/event.h>
72 #include <sys/namei.h>
73 #include <sys/signalvar.h>
74 #include <sys/unistd.h>
77 #include <vm/vm_extern.h>
78 #include <vm/vm_zone.h>
79 #include <vm/vnode_pager.h>
82 #include <sys/thread2.h>
84 #include <vfs/fifofs/fifo.h>
89 #include "ext2mount.h"
90 #include "ext2_fs_sb.h"
92 #include "ext2_extern.h"
95 static int ext2_access (struct vop_access_args *);
96 static int ext2_advlock (struct vop_advlock_args *);
97 static int ext2_chmod (struct vnode *, int, struct ucred *);
98 static int ext2_chown (struct vnode *, uid_t, gid_t, struct ucred *);
99 static int ext2_close (struct vop_close_args *);
100 static int ext2_getattr (struct vop_getattr_args *);
101 static int ext2_makeinode (int mode, struct vnode *, struct vnode **, struct componentname *);
102 static int ext2_mmap (struct vop_mmap_args *);
103 static int ext2_open (struct vop_open_args *);
104 static int ext2_pathconf (struct vop_pathconf_args *);
105 static int ext2_print (struct vop_print_args *);
106 static int ext2_readlink (struct vop_readlink_args *);
107 static int ext2_setattr (struct vop_setattr_args *);
108 static int ext2_strategy (struct vop_strategy_args *);
109 static int ext2_whiteout (struct vop_old_whiteout_args *);
110 static int filt_ext2read (struct knote *kn, long hint);
111 static int filt_ext2write (struct knote *kn, long hint);
112 static int filt_ext2vnode (struct knote *kn, long hint);
113 static void filt_ext2detach (struct knote *kn);
114 static int ext2_kqfilter (struct vop_kqfilter_args *ap);
115 static int ext2fifo_close (struct vop_close_args *);
116 static int ext2fifo_kqfilter (struct vop_kqfilter_args *);
117 static int ext2fifo_read (struct vop_read_args *);
118 static int ext2fifo_write (struct vop_write_args *);
120 static int ext2_fsync (struct vop_fsync_args *);
121 static int ext2_read (struct vop_read_args *);
122 static int ext2_write (struct vop_write_args *);
123 static int ext2_remove (struct vop_old_remove_args *);
124 static int ext2_link (struct vop_old_link_args *);
125 static int ext2_rename (struct vop_old_rename_args *);
126 static int ext2_mkdir (struct vop_old_mkdir_args *);
127 static int ext2_rmdir (struct vop_old_rmdir_args *);
128 static int ext2_create (struct vop_old_create_args *);
129 static int ext2_mknod (struct vop_old_mknod_args *);
130 static int ext2_symlink (struct vop_old_symlink_args *);
131 static int ext2_getpages (struct vop_getpages_args *);
133 #include "ext2_readwrite.c"
139 #define SETHIGH(q, h) { \
142 tmp.val[_QUAD_HIGHWORD] = (h); \
145 #define SETLOW(q, l) { \
148 tmp.val[_QUAD_LOWWORD] = (l); \
151 #define VN_KNOTE(vp, b) \
152 KNOTE(&vp->v_pollinfo.vpi_selinfo.si_note, (b))
154 #define OFSFMT(vp) ((vp)->v_mount->mnt_maxsymlinklen <= 0)
157 * A virgin directory (no blushing please).
158 * Note that the type and namlen fields are reversed relative to ufs.
159 * Also, we don't use `struct odirtemplate', since it would just cause
160 * endianness problems.
162 static struct dirtemplate ext2_mastertemplate = {
163 0, 12, 1, EXT2_FT_DIR, ".",
164 0, DIRBLKSIZ - 12, 2, EXT2_FT_DIR, ".."
166 static struct dirtemplate ext2_omastertemplate = {
167 0, 12, 1, EXT2_FT_UNKNOWN, ".",
168 0, DIRBLKSIZ - 12, 2, EXT2_FT_UNKNOWN, ".."
172 * Create a regular file
174 * ext2_create(struct vnode *a_dvp, struct vnode **a_vpp,
175 * struct componentname *a_cnp, struct vattr *a_vap)
178 ext2_create(struct vop_old_create_args *ap)
183 ext2_makeinode(MAKEIMODE(ap->a_vap->va_type, ap->a_vap->va_mode),
184 ap->a_dvp, ap->a_vpp, ap->a_cnp);
191 * Synch an open file.
193 * ext2_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
198 static int ext2_fsync_bp(struct buf *bp, void *data);
200 struct ext2_fsync_bp_info {
206 ext2_fsync(struct vop_fsync_args *ap)
208 struct ext2_fsync_bp_info info;
209 struct vnode *vp = ap->a_vp;
214 * XXX why is all this fs specific?
218 * Flush all dirty buffers associated with a vnode.
220 ext2_discard_prealloc(VTOI(vp));
222 lwkt_gettoken(&vlock, &vp->v_token);
225 info.waitfor = ap->a_waitfor;
226 count = RB_SCAN(buf_rb_tree, &vp->v_rbdirty_tree, NULL,
227 ext2_fsync_bp, &info);
231 if (ap->a_waitfor == MNT_WAIT) {
232 bio_track_wait(&vp->v_track_write, 0, 0);
234 if (!RB_EMPTY(&vp->v_rbdirty_tree)) {
235 vprint("ext2_fsync: dirty", vp);
240 lwkt_reltoken(&vlock);
241 return (EXT2_UPDATE(ap->a_vp, ap->a_waitfor == MNT_WAIT));
245 ext2_fsync_bp(struct buf *bp, void *data)
247 struct ext2_fsync_bp_info *info = data;
249 if (BUF_LOCK(bp, LK_EXCLUSIVE | LK_NOWAIT))
251 if ((bp->b_flags & B_DELWRI) == 0)
252 panic("ext2_fsync: not dirty");
256 * Wait for I/O associated with indirect blocks to complete,
257 * since there is no way to quickly wait for them below.
259 if (bp->b_vp == info->vp || info->waitfor == MNT_NOWAIT)
269 * ext2_mknod(struct vnode *a_dvp, struct vnode **a_vpp,
270 * struct componentname *a_cnp, struct vattr *a_vap)
274 ext2_mknod(struct vop_old_mknod_args *ap)
276 struct vattr *vap = ap->a_vap;
277 struct vnode **vpp = ap->a_vpp;
282 if (vap->va_rmajor != VNOVAL &&
283 makeudev(vap->va_rmajor, vap->va_rminor) == NOUDEV) {
287 error = ext2_makeinode(MAKEIMODE(vap->va_type, vap->va_mode),
288 ap->a_dvp, vpp, ap->a_cnp);
292 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
293 if (vap->va_rmajor != VNOVAL) {
295 * Want to be able to use this to make badblock
296 * inodes, so don't truncate the dev number.
298 ip->i_rdev = makeudev(vap->va_rmajor, vap->va_rminor);
301 * Remove inode, then reload it through VFS_VGET so it is
302 * checked to see if it is an alias of an existing entry in
305 (*vpp)->v_type = VNON;
306 ino = ip->i_number; /* Save this before vgone() invalidates ip. */
307 vgone_vxlocked(*vpp);
309 error = VFS_VGET(ap->a_dvp->v_mount, NULL, ino, vpp);
318 * ext2_remove(struct vnode *a_dvp, struct vnode *a_vp,
319 * struct componentname *a_cnp)
322 ext2_remove(struct vop_old_remove_args *ap)
325 struct vnode *vp = ap->a_vp;
326 struct vnode *dvp = ap->a_dvp;
330 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
331 (VTOI(dvp)->i_flags & APPEND)) {
335 error = ext2_dirremove(dvp, ap->a_cnp);
338 ip->i_flag |= IN_CHANGE;
347 * ext2_link(struct vnode *a_tdvp, struct vnode *a_vp,
348 * struct componentname *a_cnp)
351 ext2_link(struct vop_old_link_args *ap)
353 struct vnode *vp = ap->a_vp;
354 struct vnode *tdvp = ap->a_tdvp;
355 struct componentname *cnp = ap->a_cnp;
359 if (tdvp->v_mount != vp->v_mount) {
363 if (tdvp != vp && (error = vn_lock(vp, LK_EXCLUSIVE))) {
367 if ((nlink_t)ip->i_nlink >= LINK_MAX) {
371 if (ip->i_flags & (IMMUTABLE | APPEND)) {
376 ip->i_flag |= IN_CHANGE;
377 error = EXT2_UPDATE(vp, 1);
379 error = ext2_direnter(ip, tdvp, cnp);
382 ip->i_flag |= IN_CHANGE;
392 * Rename system call. fdvp, fvp are ref'd. tvp, tdvp are ref'd and locked.
393 * all vp's are released and must be in an unlocked state on return.
395 * ext2_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
396 * struct componentname *a_fcnp, struct vnode *a_tdvp,
397 * struct vnode *a_tvp, struct componentname *a_tcnp)
400 ext2_rename(struct vop_old_rename_args *ap)
402 struct vnode *tvp = ap->a_tvp;
403 struct vnode *tdvp = ap->a_tdvp;
404 struct vnode *fvp = ap->a_fvp;
405 struct vnode *fdvp = ap->a_fdvp;
406 struct componentname *tcnp = ap->a_tcnp;
407 struct componentname *fcnp = ap->a_fcnp;
408 struct inode *ip, *xp, *dp;
409 struct dirtemplate dirbuf;
410 int doingdirectory = 0, oldparent = 0, newparent = 0;
415 * Check for cross-device rename.
417 if ((fvp->v_mount != tdvp->v_mount) ||
418 (tvp && (fvp->v_mount != tvp->v_mount)) ||
433 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
434 (VTOI(tdvp)->i_flags & APPEND))) {
440 * Renaming a file to itself has no effect. The upper layers should
441 * not call us in that case. Temporarily just warn if they do.
448 if ((error = vn_lock(fvp, LK_EXCLUSIVE)) != 0)
452 * fvp, tvp, tdvp locked. fdvp not locked but note that fdvp may
457 if (ip->i_nlink >= LINK_MAX) {
462 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
463 || (dp->i_flags & APPEND)) {
468 if ((ip->i_mode & IFMT) == IFDIR) {
470 * Avoid ".", "..", and aliases of "." for obvious reasons.
472 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
473 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & CNP_ISDOTDOT ||
474 (ip->i_flag & IN_RENAME)) {
479 ip->i_flag |= IN_RENAME;
480 oldparent = dp->i_number;
485 * tvp is non-NULL if the target exists. fvp is still locked but
486 * we will unlock it soon. The 'bad' goto target requires dp and
487 * xp to be correctly assigned.
496 * 1) Bump link count while we're moving stuff
497 * around. If we crash somewhere before
498 * completing our work, the link count
499 * may be wrong, but correctable.
502 ip->i_flag |= IN_CHANGE;
503 if ((error = EXT2_UPDATE(fvp, 1)) != 0) {
509 * If ".." must be changed (ie the directory gets a new
510 * parent) then the source directory must not be in the
511 * directory heirarchy above the target, as this would
512 * orphan everything below the source directory. Also
513 * the user must have write permission in the source so
514 * as to be able to change "..". We must repeat the call
515 * to namei, as the parent directory is unlocked by the
516 * call to checkpath().
518 error = VOP_EACCESS(fvp, VWRITE, tcnp->cn_cred);
522 * tvp (if not NULL) and tdvp are locked. fvp and fdvp are not.
523 * dp and xp are set according to tdvp and tvp.
525 if (oldparent != dp->i_number)
526 newparent = dp->i_number;
527 if (doingdirectory && newparent) {
528 if (error) /* write access check above */
532 * Prepare for relookup, get rid of xp
540 * checkpath vput()'s tdvp (VTOI(dp)) on return no matter what,
541 * get an extra ref so we wind up with just an unlocked, ref'd
542 * tdvp. The 'out' target skips xp and tdvp cleanups. Our
543 * tdvp is now unlocked so we have to clean it up ourselves.
546 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
547 tcnp->cn_flags |= CNP_PDIRUNLOCK;
553 * relookup no longer messes with the ref count. An unlocked
554 * tdvp must be passed and if no error occurs a locked tdvp
555 * will be returned. We have to use the out target again.
557 error = relookup(tdvp, &tvp, tcnp);
559 if (tcnp->cn_flags & CNP_PDIRUNLOCK)
567 * tdvp is locked at this point. in the RENAME case tvp may
568 * be NULL without an error, assign xp accordingly. The
569 * 'bad' target can be used again after this.
576 * 2) If target doesn't exist, link the target
577 * to the source and unlink the source.
578 * Otherwise, rewrite the target directory
579 * entry to reference the source inode and
580 * expunge the original entry's existence.
582 * tdvp and tvp are cleaned up by this code. tvp is only good if
586 if (dp->i_dev != ip->i_dev)
587 panic("ext2_rename: EXDEV");
589 * Account for ".." in new directory.
590 * When source and destination have the same
591 * parent we don't fool with the link count.
593 if (doingdirectory && newparent) {
594 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
599 dp->i_flag |= IN_CHANGE;
600 error = EXT2_UPDATE(tdvp, 1);
604 error = ext2_direnter(ip, tdvp, tcnp);
606 if (doingdirectory && newparent) {
608 dp->i_flag |= IN_CHANGE;
609 EXT2_UPDATE(tdvp, 1);
615 * manual cleanup, we can't use the bad or out target after
620 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
621 panic("ext2_rename: EXDEV");
623 * Short circuit rename(foo, foo).
625 if (xp->i_number == ip->i_number)
626 panic("ext2_rename: same file");
628 * If the parent directory is "sticky", then the user must
629 * own the parent directory, or the destination of the rename,
630 * otherwise the destination may not be changed (except by
631 * root). This implements append-only directories.
633 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
634 tcnp->cn_cred->cr_uid != dp->i_uid &&
635 xp->i_uid != tcnp->cn_cred->cr_uid) {
640 * Target must be empty if a directory and have no links
641 * to it. Also, ensure source and target are compatible
642 * (both directories, or both not directories).
644 if ((xp->i_mode&IFMT) == IFDIR) {
645 if (! ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
650 if (!doingdirectory) {
654 } else if (doingdirectory) {
658 error = ext2_dirrewrite(dp, ip, tcnp);
662 * If the target directory is in the same
663 * directory as the source directory,
664 * decrement the link count on the parent
665 * of the target directory.
667 if (doingdirectory && !newparent) {
669 dp->i_flag |= IN_CHANGE;
673 * manual cleanup, we can't use the bad or out target after
679 * Adjust the link count of the target to
680 * reflect the dirrewrite above. If this is
681 * a directory it is empty and there are
682 * no links to it, so we can squash the inode and
683 * any space associated with it. We disallowed
684 * renaming over top of a directory with links to
685 * it above, as the remaining link would point to
686 * a directory without "." or ".." entries.
689 if (doingdirectory) {
690 if (--xp->i_nlink != 0)
691 panic("ext2_rename: linked directory");
692 error = EXT2_TRUNCATE(tvp, (off_t)0, IO_SYNC,
695 xp->i_flag |= IN_CHANGE;
701 * tvp and tdvp have been cleaned up. The bad and out targets may
702 * not be used. fvp and fdvp are ref'd but not locked. ip
703 * still represents the old fvp and ip->i_flag may still have IN_RENAME
704 * set (if doingdirectory).
708 * 3) Unlink the source.
710 * fdvp is locked and ref'd. ap->a_fvp holds the old lookup unlocked
711 * and ref'd, fvp will hold the new lookup locked and ref'd.
713 * After the relookup ap->a_fvp must be released as part of our
714 * cleanup, not just fdvp and fvp. And, on success, fdvp and
715 * fvp will be locked so the bad and out targets cannot be used.
717 fcnp->cn_flags &= ~CNP_MODMASK;
718 fcnp->cn_flags |= CNP_LOCKPARENT;
719 KKASSERT(fcnp->cn_flags & CNP_PDIRUNLOCK);
720 error = relookup(fdvp, &fvp, fcnp);
723 * From name has disappeared.
726 panic("ext2_rename: lost dir entry");
727 /* ip->i_flag only sets IN_RENAME if doingdirectory */
729 if (fcnp->cn_flags & CNP_PDIRUNLOCK)
735 KKASSERT((fcnp->cn_flags & CNP_PDIRUNLOCK) == 0);
738 * This case shouldn't occur
742 * From name has disappeared.
745 panic("ext2_rename: lost dir entry");
746 /* ip->i_flag only sets IN_RENAME if doingdirectory */
754 * fvp and fdvp are both ref'd and locked.
760 * Ensure that the directory entry still exists and has not
761 * changed while the new name has been entered. If the source is
762 * a file then the entry may have been unlinked or renamed. In
763 * either case there is no further work to be done. If the source
764 * is a directory then it cannot have been rmdir'ed; its link
765 * count of three would cause a rmdir to fail with ENOTEMPTY.
766 * The IN_RENAME flag ensures that it cannot be moved by another
771 panic("ext2_rename: lost dir entry");
772 /* ip->i_flag only sets IN_RENAME if doingdirectory */
775 * If the source is a directory with a
776 * new parent, the link count of the old
777 * parent directory must be decremented
778 * and ".." set to point to the new parent.
780 if (doingdirectory && newparent) {
782 dp->i_flag |= IN_CHANGE;
783 error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
784 sizeof (struct dirtemplate), (off_t)0,
785 UIO_SYSSPACE, IO_NODELOCKED,
786 tcnp->cn_cred, NULL);
788 /* Like ext2 little-endian: */
789 namlen = dirbuf.dotdot_type;
791 dirbuf.dotdot_name[0] != '.' ||
792 dirbuf.dotdot_name[1] != '.') {
793 ext2_dirbad(xp, (doff_t)12,
794 "rename: mangled dir");
796 dirbuf.dotdot_ino = newparent;
797 vn_rdwr(UIO_WRITE, fvp,
799 sizeof (struct dirtemplate),
800 (off_t)0, UIO_SYSSPACE,
801 IO_NODELOCKED|IO_SYNC,
802 tcnp->cn_cred, NULL);
806 error = ext2_dirremove(fdvp, fcnp);
809 xp->i_flag |= IN_CHANGE;
811 xp->i_flag &= ~IN_RENAME;
825 ip->i_flag &= ~IN_RENAME;
826 if (vn_lock(fvp, LK_EXCLUSIVE) == 0) {
828 ip->i_flag |= IN_CHANGE;
829 ip->i_flag &= ~IN_RENAME;
840 * ext2_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
841 * struct componentname *a_cnp, struct vattr *a_vap)
844 ext2_mkdir(struct vop_old_mkdir_args *ap)
846 struct vnode *dvp = ap->a_dvp;
847 struct vattr *vap = ap->a_vap;
848 struct componentname *cnp = ap->a_cnp;
849 struct inode *ip, *dp;
851 struct dirtemplate dirtemplate, *dtp;
855 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
859 dmode = vap->va_mode & 0777;
862 * Must simulate part of ext2_makeinode here to acquire the inode,
863 * but not have it entered in the parent directory. The entry is
864 * made later after writing "." and ".." entries.
866 error = EXT2_VALLOC(dvp, dmode, cnp->cn_cred, &tvp);
870 ip->i_gid = dp->i_gid;
874 struct ucred ucred, *ucp;
878 * if we are hacking owners here, (only do this where told to)
879 * and we are not giving it TOO root, (would subvert quotas)
880 * then go ahead and give it to the other user.
881 * The new directory also inherits the SUID bit.
882 * If user's UID and dir UID are the same,
883 * 'give it away' so that the SUID is still forced on.
885 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
886 (dp->i_mode & ISUID) && dp->i_uid) {
888 ip->i_uid = dp->i_uid;
890 if (dp->i_uid != cnp->cn_cred->cr_uid) {
892 * make sure the correct user gets charged
894 * Make a dummy credential for the victim.
895 * XXX This seems to never be accessed out of
896 * our context so a stack variable is ok.
899 ucred.cr_uid = ip->i_uid;
900 ucred.cr_ngroups = 1;
901 ucred.cr_groups[0] = dp->i_gid;
906 ip->i_uid = cnp->cn_cred->cr_uid;
909 if ((error = ext2_getinoquota(ip)) ||
910 (error = ext2_chkiq(ip, 1, ucp, 0))) {
911 EXT2_VFREE(tvp, ip->i_number, dmode);
918 ip->i_uid = cnp->cn_cred->cr_uid;
920 if ((error = ext2_getinoquota(ip)) ||
921 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
922 EXT2_VFREE(tvp, ip->i_number, dmode);
928 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
930 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
932 if (cnp->cn_flags & CNP_ISWHITEOUT)
933 ip->i_flags |= UF_OPAQUE;
934 error = EXT2_UPDATE(tvp, 1);
937 * The vnode must have a VM object in order to issue buffer cache
943 * Bump link count in parent directory
944 * to reflect work done below. Should
945 * be done before reference is created
946 * so reparation is possible if we crash.
949 dp->i_flag |= IN_CHANGE;
950 error = EXT2_UPDATE(dvp, 1);
954 /* Initialize directory with "." and ".." from static template. */
955 if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs->s_es,
956 EXT2_FEATURE_INCOMPAT_FILETYPE))
957 dtp = &ext2_mastertemplate;
959 dtp = &ext2_omastertemplate;
961 dirtemplate.dot_ino = ip->i_number;
962 dirtemplate.dotdot_ino = dp->i_number;
963 /* note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE
964 * so let's just redefine it - for this function only
967 #define DIRBLKSIZ VTOI(dvp)->i_e2fs->s_blocksize
968 dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
969 error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
970 sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
971 IO_NODELOCKED|IO_SYNC, cnp->cn_cred, NULL);
974 dp->i_flag |= IN_CHANGE;
977 if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
978 panic("ext2_mkdir: blksize"); /* XXX should grow with balloc() */
980 ip->i_size = DIRBLKSIZ;
981 ip->i_flag |= IN_CHANGE;
984 /* Directory set up, now install its entry in the parent directory. */
985 error = ext2_direnter(ip, dvp, cnp);
988 dp->i_flag |= IN_CHANGE;
992 * No need to do an explicit VOP_TRUNCATE here, vrele will do this
993 * for us because we set the link count to 0.
997 ip->i_flag |= IN_CHANGE;
1004 #define DIRBLKSIZ DEV_BSIZE
1008 * Rmdir system call.
1010 * ext2_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
1011 * struct componentname *a_cnp)
1014 ext2_rmdir(struct vop_old_rmdir_args *ap)
1016 struct vnode *vp = ap->a_vp;
1017 struct vnode *dvp = ap->a_dvp;
1018 struct componentname *cnp = ap->a_cnp;
1019 struct inode *ip, *dp;
1026 * Verify the directory is empty (and valid).
1027 * (Rmdir ".." won't be valid since
1028 * ".." will contain a reference to
1029 * the current directory and thus be
1033 if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
1037 if ((dp->i_flags & APPEND)
1038 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1043 * Delete reference to directory before purging
1044 * inode. If we crash in between, the directory
1045 * will be reattached to lost+found,
1047 error = ext2_dirremove(dvp, cnp);
1051 dp->i_flag |= IN_CHANGE;
1054 * Truncate inode. The only stuff left
1055 * in the directory is "." and "..". The
1056 * "." reference is inconsequential since
1057 * we're quashing it. The ".." reference
1058 * has already been adjusted above. We've
1059 * removed the "." reference and the reference
1060 * in the parent directory, but there may be
1061 * other hard links so decrement by 2 and
1062 * worry about them later.
1065 error = EXT2_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
1066 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1072 * symlink -- make a symbolic link
1074 * ext2_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
1075 * struct componentname *a_cnp, struct vattr *a_vap,
1079 ext2_symlink(struct vop_old_symlink_args *ap)
1081 struct vnode *vp, **vpp = ap->a_vpp;
1085 error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
1090 len = strlen(ap->a_target);
1091 if (len < vp->v_mount->mnt_maxsymlinklen) {
1093 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
1095 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1098 * Make sure we have a VM object in order to use
1101 if (vp->v_object == NULL)
1104 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
1105 UIO_SYSSPACE, IO_NODELOCKED,
1106 ap->a_cnp->cn_cred, NULL);
1116 * Allocate a new inode.
1119 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
1120 struct componentname *cnp)
1122 struct inode *ip, *pdir;
1128 if ((mode & IFMT) == 0)
1131 error = EXT2_VALLOC(dvp, mode, cnp->cn_cred, &tvp);
1136 ip->i_gid = pdir->i_gid;
1140 struct ucred ucred, *ucp;
1145 * not the owner of the directory,
1146 * and we are hacking owners here, (only do this where told to)
1147 * and we are not giving it TOO root, (would subvert quotas)
1148 * then go ahead and give it to the other user.
1149 * Note that this drops off the execute bits for security.
1151 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
1152 (pdir->i_mode & ISUID) &&
1153 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
1154 ip->i_uid = pdir->i_uid;
1158 * make sure the correct user gets charged
1160 * Quickly knock up a dummy credential for the victim.
1161 * XXX This seems to never be accessed out of our
1162 * context so a stack variable is ok.
1165 ucred.cr_uid = ip->i_uid;
1166 ucred.cr_ngroups = 1;
1167 ucred.cr_groups[0] = pdir->i_gid;
1171 ip->i_uid = cnp->cn_cred->cr_uid;
1175 if ((error = ext2_getinoquota(ip)) ||
1176 (error = ext2_chkiq(ip, 1, ucp, 0))) {
1177 EXT2_VFREE(tvp, ip->i_number, mode);
1184 ip->i_uid = cnp->cn_cred->cr_uid;
1186 if ((error = ext2_getinoquota(ip)) ||
1187 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
1188 EXT2_VFREE(tvp, ip->i_number, mode);
1194 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
1196 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
1198 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
1199 priv_check_cred(cnp->cn_cred, PRIV_VFS_SETGID, 0))
1200 ip->i_mode &= ~ISGID;
1202 if (cnp->cn_flags & CNP_ISWHITEOUT)
1203 ip->i_flags |= UF_OPAQUE;
1206 * Regular files and directories need VM objects. Softlinks do
1207 * not (not immediately anyway).
1209 if (tvp->v_type == VREG || tvp->v_type == VDIR)
1213 * Make sure inode goes to disk before directory entry.
1215 error = EXT2_UPDATE(tvp, 1);
1218 error = ext2_direnter(ip, dvp, cnp);
1227 * Write error occurred trying to update the inode
1228 * or the directory so must deallocate the inode.
1231 ip->i_flag |= IN_CHANGE;
1239 * XXX By default, wimp out... note that a_offset is ignored (and always
1243 ext2_getpages(struct vop_getpages_args *ap)
1245 return (vnode_pager_generic_getpages(ap->a_vp, ap->a_m, ap->a_count,
1250 ext2_itimes(struct vnode *vp)
1256 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
1258 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp))
1259 ip->i_flag |= IN_LAZYMOD;
1261 ip->i_flag |= IN_MODIFIED;
1262 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
1264 if (ip->i_flag & IN_ACCESS) {
1265 ip->i_atime = ts.tv_sec;
1266 ip->i_atimensec = ts.tv_nsec;
1268 if (ip->i_flag & IN_UPDATE) {
1269 ip->i_mtime = ts.tv_sec;
1270 ip->i_mtimensec = ts.tv_nsec;
1273 if (ip->i_flag & IN_CHANGE) {
1274 ip->i_ctime = ts.tv_sec;
1275 ip->i_ctimensec = ts.tv_nsec;
1278 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
1286 * ext2_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
1287 * struct file *a_fp)
1292 ext2_open(struct vop_open_args *ap)
1294 struct vnode *vp = ap->a_vp;
1297 * Files marked append-only must be opened for appending.
1299 if ((VTOI(vp)->i_flags & APPEND) &&
1300 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) {
1303 return (vop_stdopen(ap));
1309 * Update the times on the inode.
1311 * ext2_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1316 ext2_close(struct vop_close_args *ap)
1318 struct vnode *vp = ap->a_vp;
1320 if (vp->v_sysref.refcnt > 1)
1322 return (vop_stdclose(ap));
1326 * ext2_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
1330 ext2_access(struct vop_access_args *ap)
1332 struct vnode *vp = ap->a_vp;
1333 struct inode *ip = VTOI(vp);
1337 if (ap->a_mode & VWRITE) {
1338 switch (vp->v_type) {
1342 if ((error = ext2_getinoquota(ip)) != 0)
1351 error = vop_helper_access(ap, ip->i_uid, ip->i_gid, ip->i_mode,
1357 * ext2_getattr(struct vnode *a_vp, struct vattr *a_vap)
1362 ext2_getattr(struct vop_getattr_args *ap)
1364 struct vnode *vp = ap->a_vp;
1365 struct inode *ip = VTOI(vp);
1366 struct vattr *vap = ap->a_vap;
1370 * Copy from inode table
1372 vap->va_fsid = dev2udev(ip->i_dev);
1373 vap->va_fileid = ip->i_number;
1374 vap->va_mode = ip->i_mode & ~IFMT;
1375 vap->va_nlink = VFSTOEXT2(vp->v_mount)->um_i_effnlink_valid ?
1376 ip->i_effnlink : ip->i_nlink;
1377 vap->va_uid = ip->i_uid;
1378 vap->va_gid = ip->i_gid;
1379 vap->va_rmajor = umajor(ip->i_rdev);
1380 vap->va_rminor = uminor(ip->i_rdev);
1381 vap->va_size = ip->i_din.di_size;
1382 vap->va_atime.tv_sec = ip->i_atime;
1383 vap->va_atime.tv_nsec = ip->i_atimensec;
1384 vap->va_mtime.tv_sec = ip->i_mtime;
1385 vap->va_mtime.tv_nsec = ip->i_mtimensec;
1386 vap->va_ctime.tv_sec = ip->i_ctime;
1387 vap->va_ctime.tv_nsec = ip->i_ctimensec;
1388 vap->va_flags = ip->i_flags;
1389 vap->va_gen = ip->i_gen;
1390 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
1391 vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
1392 vap->va_type = IFTOVT(ip->i_mode);
1393 vap->va_filerev = ip->i_modrev;
1398 * Set attribute vnode op. called from several syscalls
1400 * ext2_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
1404 ext2_setattr(struct vop_setattr_args *ap)
1406 struct vattr *vap = ap->a_vap;
1407 struct vnode *vp = ap->a_vp;
1408 struct inode *ip = VTOI(vp);
1409 struct ucred *cred = ap->a_cred;
1413 * Check for unsettable attributes.
1415 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
1416 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
1417 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
1418 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
1421 if (vap->va_flags != VNOVAL) {
1422 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1424 if (cred->cr_uid != ip->i_uid &&
1425 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)))
1428 * Note that a root chflags becomes a user chflags when
1429 * we are jailed, unless the jail.chflags_allowed sysctl
1432 if (cred->cr_uid == 0 &&
1433 (!jailed(cred) || jail_chflags_allowed)) {
1435 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) &&
1438 ip->i_flags = vap->va_flags;
1441 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
1442 (vap->va_flags & UF_SETTABLE) != vap->va_flags)
1444 ip->i_flags &= SF_SETTABLE;
1445 ip->i_flags |= (vap->va_flags & UF_SETTABLE);
1447 ip->i_flag |= IN_CHANGE;
1448 if (vap->va_flags & (IMMUTABLE | APPEND))
1451 if (ip->i_flags & (IMMUTABLE | APPEND))
1454 * Go through the fields and update iff not VNOVAL.
1456 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
1457 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1459 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred)) != 0)
1462 if (vap->va_size != VNOVAL) {
1464 * Disallow write attempts on read-only filesystems;
1465 * unless the file is a socket, fifo, or a block or
1466 * character device resident on the filesystem.
1468 switch (vp->v_type) {
1473 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1479 if ((error = EXT2_TRUNCATE(vp, vap->va_size, 0, cred)) != 0)
1483 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
1484 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1486 if (cred->cr_uid != ip->i_uid &&
1487 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) &&
1488 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1489 (error = VOP_EACCESS(vp, VWRITE, cred))))
1491 if (vap->va_atime.tv_sec != VNOVAL)
1492 ip->i_flag |= IN_ACCESS;
1493 if (vap->va_mtime.tv_sec != VNOVAL)
1494 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1496 if (vap->va_atime.tv_sec != VNOVAL) {
1497 ip->i_atime = vap->va_atime.tv_sec;
1498 ip->i_atimensec = vap->va_atime.tv_nsec;
1500 if (vap->va_mtime.tv_sec != VNOVAL) {
1501 ip->i_mtime = vap->va_mtime.tv_sec;
1502 ip->i_mtimensec = vap->va_mtime.tv_nsec;
1504 error = EXT2_UPDATE(vp, 0);
1509 if (vap->va_mode != (mode_t)VNOVAL) {
1510 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1512 error = ext2_chmod(vp, (int)vap->va_mode, cred);
1514 VN_KNOTE(vp, NOTE_ATTRIB);
1519 * Change the mode on a file.
1520 * Inode must be locked before calling.
1523 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred)
1525 struct inode *ip = VTOI(vp);
1528 if (cred->cr_uid != ip->i_uid) {
1529 error = priv_check_cred(cred, PRIV_VFS_CHMOD, 0);
1534 if (vp->v_type != VDIR && (mode & S_ISTXT))
1536 if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
1539 ip->i_mode &= ~ALLPERMS;
1540 ip->i_mode |= (mode & ALLPERMS);
1541 ip->i_flag |= IN_CHANGE;
1546 * Perform chown operation on inode ip;
1547 * inode must be locked prior to call.
1550 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred)
1552 struct inode *ip = VTOI(vp);
1561 if (uid == (uid_t)VNOVAL)
1563 if (gid == (gid_t)VNOVAL)
1566 * If we don't own the file, are trying to change the owner
1567 * of the file, or are not a member of the target group,
1568 * the caller must be superuser or the call fails.
1570 if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
1571 (gid != ip->i_gid && !(cred->cr_gid == gid ||
1572 groupmember((gid_t)gid, cred)))) &&
1573 (error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0)))
1578 if ((error = ext2_getinoquota(ip)) != 0)
1581 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1582 ip->i_dquot[USRQUOTA] = NODQUOT;
1585 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1586 ip->i_dquot[GRPQUOTA] = NODQUOT;
1588 change = ip->i_blocks;
1589 (void) ext2_chkdq(ip, -change, cred, CHOWN);
1590 (void) ext2_chkiq(ip, -1, cred, CHOWN);
1591 for (i = 0; i < MAXQUOTAS; i++) {
1592 ext2_dqrele(vp, ip->i_dquot[i]);
1593 ip->i_dquot[i] = NODQUOT;
1599 if ((error = ext2_getinoquota(ip)) == 0) {
1601 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1602 ip->i_dquot[USRQUOTA] = NODQUOT;
1605 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1606 ip->i_dquot[GRPQUOTA] = NODQUOT;
1608 if ((error = ext2_chkdq(ip, change, cred, CHOWN)) == 0) {
1609 if ((error = ext2_chkiq(ip, 1, cred, CHOWN)) == 0)
1612 (void)ext2_chkdq(ip, -change, cred, CHOWN|FORCE);
1614 for (i = 0; i < MAXQUOTAS; i++) {
1615 ext2_dqrele(vp, ip->i_dquot[i]);
1616 ip->i_dquot[i] = NODQUOT;
1621 if (ext2_getinoquota(ip) == 0) {
1623 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1624 ip->i_dquot[USRQUOTA] = NODQUOT;
1627 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1628 ip->i_dquot[GRPQUOTA] = NODQUOT;
1630 (void) ext2_chkdq(ip, change, cred, FORCE|CHOWN);
1631 (void) ext2_chkiq(ip, 1, cred, FORCE|CHOWN);
1632 (void) ext2_getinoquota(ip);
1636 if (ext2_getinoquota(ip))
1637 panic("ext2_chown: lost quota");
1639 ip->i_flag |= IN_CHANGE;
1640 if (cred->cr_uid != 0 && (ouid != uid || ogid != gid))
1641 ip->i_mode &= ~(ISUID | ISGID);
1648 * NB Currently unsupported.
1650 * ext2_mmap(struct vnode *a_vp, int a_fflags, struct ucred *a_cred)
1655 ext2_mmap(struct vop_mmap_args *ap)
1661 * whiteout vnode call
1663 * ext2_whiteout(struct vnode *a_dvp, struct componentname *a_cnp, int a_flags)
1667 ext2_whiteout(struct vop_old_whiteout_args *ap)
1669 return (EOPNOTSUPP);
1673 * Return target name of a symbolic link
1675 * ext2_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred)
1679 ext2_readlink(struct vop_readlink_args *ap)
1681 struct vnode *vp = ap->a_vp;
1682 struct inode *ip = VTOI(vp);
1686 if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
1687 (ip->i_din.di_blocks == 0)) { /* XXX - for old fastlink support */
1688 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
1691 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
1695 * Calculate the logical to physical mapping if not done already,
1696 * then call the device strategy routine.
1698 * In order to be able to swap to a file, the VOP_BMAP operation may not
1699 * deadlock on memory. See ext2_bmap() for details.
1701 * ext2_strategy(struct vnode *a_vp, struct bio *a_bio)
1705 ext2_strategy(struct vop_strategy_args *ap)
1707 struct bio *bio = ap->a_bio;
1709 struct buf *bp = bio->bio_buf;
1710 struct vnode *vp = ap->a_vp;
1715 if (vp->v_type == VBLK || vp->v_type == VCHR)
1716 panic("ext2_strategy: spec");
1717 nbio = push_bio(bio);
1718 if (nbio->bio_offset == NOOFFSET) {
1719 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
1720 NULL, NULL, bp->b_cmd);
1722 bp->b_error = error;
1723 bp->b_flags |= B_ERROR;
1724 /* I/O was never started on nbio, must biodone(bio) */
1728 if (nbio->bio_offset == NOOFFSET)
1731 if (nbio->bio_offset == NOOFFSET) {
1732 /* I/O was never started on nbio, must biodone(bio) */
1736 vn_strategy(ip->i_devvp, nbio);
1741 * Print out the contents of an inode.
1743 * ext2_print(struct vnode *a_vp)
1747 ext2_print(struct vop_print_args *ap)
1749 struct vnode *vp = ap->a_vp;
1750 struct inode *ip = VTOI(vp);
1752 kprintf("tag VT_EXT2FS, ino %lu, on dev %s (%d, %d)",
1753 (u_long)ip->i_number, devtoname(ip->i_dev), major(ip->i_dev),
1755 if (vp->v_type == VFIFO)
1757 lockmgr_printinfo(&vp->v_lock);
1763 * Read wrapper for fifos.
1765 * ext2fifo_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1766 * struct ucred *a_cred)
1770 ext2fifo_read(struct vop_read_args *ap)
1777 resid = uio->uio_resid;
1778 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1779 ip = VTOI(ap->a_vp);
1780 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL &&
1781 (uio->uio_resid != resid || (error == 0 && resid != 0)))
1782 VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
1787 * Write wrapper for fifos.
1789 * ext2fifo_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1790 * struct ucred *a_cred)
1794 ext2fifo_write(struct vop_write_args *ap)
1801 resid = uio->uio_resid;
1802 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1803 ip = VTOI(ap->a_vp);
1804 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1805 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1810 * Close wrapper for fifos.
1812 * Update the times on the inode then do device close.
1814 * ext2fifo_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1818 ext2fifo_close(struct vop_close_args *ap)
1820 struct vnode *vp = ap->a_vp;
1822 if (vp->v_sysref.refcnt > 1)
1824 return (VOCALL(&fifo_vnode_vops, &ap->a_head));
1828 * Kqfilter wrapper for fifos.
1830 * Fall through to ext2 kqfilter routines if needed
1834 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
1838 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1840 error = ext2_kqfilter(ap);
1845 * Return POSIX pathconf information applicable to ext2 filesystems.
1847 * ext2_pathconf(struct vnode *a_vp, int a_name, int *a_retval)
1851 ext2_pathconf(struct vop_pathconf_args *ap)
1853 switch (ap->a_name) {
1855 *ap->a_retval = LINK_MAX;
1858 *ap->a_retval = NAME_MAX;
1861 *ap->a_retval = PATH_MAX;
1864 *ap->a_retval = PIPE_BUF;
1866 case _PC_CHOWN_RESTRICTED:
1879 * Advisory record locking support
1881 * ext2_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, struct flock *a_fl,
1886 ext2_advlock(struct vop_advlock_args *ap)
1888 struct inode *ip = VTOI(ap->a_vp);
1890 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size));
1894 * Initialize the vnode associated with a new inode, handle aliased
1898 ext2_vinit(struct mount *mntp, struct vnode **vpp)
1907 switch(vp->v_type = IFTOVT(ip->i_mode)) {
1910 vp->v_ops = &mntp->mnt_vn_spec_ops;
1911 addaliasu(vp, umajor(ip->i_rdev), uminor(ip->i_rdev));
1914 vp->v_ops = &mntp->mnt_vn_fifo_ops;
1918 vinitvmio(vp, ip->i_size);
1921 if ((ip->i_size >= vp->v_mount->mnt_maxsymlinklen) &&
1922 ip->i_din.di_blocks != 0
1924 vinitvmio(vp, ip->i_size);
1932 if (ip->i_number == ROOTINO)
1933 vp->v_flag |= VROOT;
1935 * Initialize modrev times
1937 getmicrouptime(&tv);
1938 SETHIGH(ip->i_modrev, tv.tv_sec);
1939 SETLOW(ip->i_modrev, tv.tv_usec * 4294);
1944 static struct filterops ext2read_filtops =
1945 { 1, NULL, filt_ext2detach, filt_ext2read };
1946 static struct filterops ext2write_filtops =
1947 { 1, NULL, filt_ext2detach, filt_ext2write };
1948 static struct filterops ext2vnode_filtops =
1949 { 1, NULL, filt_ext2detach, filt_ext2vnode };
1952 * ext2_kqfilter(struct vnode *a_vp, struct knote *a_kn)
1955 ext2_kqfilter(struct vop_kqfilter_args *ap)
1957 struct vnode *vp = ap->a_vp;
1958 struct knote *kn = ap->a_kn;
1961 switch (kn->kn_filter) {
1963 kn->kn_fop = &ext2read_filtops;
1966 kn->kn_fop = &ext2write_filtops;
1969 kn->kn_fop = &ext2vnode_filtops;
1975 kn->kn_hook = (caddr_t)vp;
1977 lwkt_gettoken(&vlock, &vp->v_token);
1978 SLIST_INSERT_HEAD(&vp->v_pollinfo.vpi_selinfo.si_note, kn, kn_selnext);
1979 lwkt_reltoken(&vlock);
1985 filt_ext2detach(struct knote *kn)
1987 struct vnode *vp = (struct vnode *)kn->kn_hook;
1990 lwkt_gettoken(&vlock, &vp->v_token);
1991 SLIST_REMOVE(&vp->v_pollinfo.vpi_selinfo.si_note,
1992 kn, knote, kn_selnext);
1993 lwkt_reltoken(&vlock);
1998 filt_ext2read(struct knote *kn, long hint)
2000 struct vnode *vp = (struct vnode *)kn->kn_hook;
2001 struct inode *ip = VTOI(vp);
2004 * filesystem is gone, so set the EOF flag and schedule
2005 * the knote for deletion.
2007 if (hint == NOTE_REVOKE) {
2008 kn->kn_flags |= (EV_EOF | EV_ONESHOT);
2012 kn->kn_data = ip->i_size - kn->kn_fp->f_offset;
2013 return (kn->kn_data != 0);
2018 filt_ext2write(struct knote *kn, long hint)
2021 * filesystem is gone, so set the EOF flag and schedule
2022 * the knote for deletion.
2024 if (hint == NOTE_REVOKE)
2025 kn->kn_flags |= (EV_EOF | EV_ONESHOT);
2032 filt_ext2vnode(struct knote *kn, long hint)
2034 if (kn->kn_sfflags & hint)
2035 kn->kn_fflags |= hint;
2036 if (hint == NOTE_REVOKE) {
2037 kn->kn_flags |= EV_EOF;
2040 return (kn->kn_fflags != 0);
2043 struct vop_ops ext2_vnode_vops = {
2044 .vop_default = vop_defaultop,
2045 .vop_fsync = ext2_fsync,
2046 .vop_read = ext2_read,
2047 .vop_reallocblks = ext2_reallocblks,
2048 .vop_write = ext2_write,
2049 .vop_access = ext2_access,
2050 .vop_advlock = ext2_advlock,
2051 .vop_bmap = ext2_bmap,
2052 .vop_old_lookup = ext2_lookup,
2053 .vop_close = ext2_close,
2054 .vop_old_create = ext2_create,
2055 .vop_getattr = ext2_getattr,
2056 .vop_inactive = ext2_inactive,
2057 .vop_old_link = ext2_link,
2058 .vop_old_mkdir = ext2_mkdir,
2059 .vop_old_mknod = ext2_mknod,
2060 .vop_mmap = ext2_mmap,
2061 .vop_open = ext2_open,
2062 .vop_pathconf = ext2_pathconf,
2063 .vop_poll = vop_stdpoll,
2064 .vop_kqfilter = ext2_kqfilter,
2065 .vop_print = ext2_print,
2066 .vop_readdir = ext2_readdir,
2067 .vop_readlink = ext2_readlink,
2068 .vop_reclaim = ext2_reclaim,
2069 .vop_old_remove = ext2_remove,
2070 .vop_old_rename = ext2_rename,
2071 .vop_old_rmdir = ext2_rmdir,
2072 .vop_setattr = ext2_setattr,
2073 .vop_strategy = ext2_strategy,
2074 .vop_old_symlink = ext2_symlink,
2075 .vop_old_whiteout = ext2_whiteout,
2076 .vop_getpages = ext2_getpages,
2077 .vop_putpages = vop_stdputpages
2080 struct vop_ops ext2_spec_vops = {
2081 .vop_default = vop_defaultop,
2082 .vop_fsync = ext2_fsync,
2083 .vop_access = ext2_access,
2084 .vop_close = ext2_close,
2085 .vop_getattr = ext2_getattr,
2086 .vop_inactive = ext2_inactive,
2087 .vop_print = ext2_print,
2088 .vop_read = vop_stdnoread,
2089 .vop_reclaim = ext2_reclaim,
2090 .vop_setattr = ext2_setattr,
2091 .vop_write = vop_stdnowrite
2094 struct vop_ops ext2_fifo_vops = {
2095 .vop_default = ext2_vnoperatefifo,
2096 .vop_fsync = ext2_fsync,
2097 .vop_access = ext2_access,
2098 .vop_close = ext2fifo_close,
2099 .vop_getattr = ext2_getattr,
2100 .vop_inactive = ext2_inactive,
2101 .vop_kqfilter = ext2fifo_kqfilter,
2102 .vop_print = ext2_print,
2103 .vop_read = ext2fifo_read,
2104 .vop_reclaim = ext2_reclaim,
2105 .vop_setattr = ext2_setattr,
2106 .vop_write = ext2fifo_write
2109 VNODEOP_SET(ext2_vnode_vops);
2110 VNODEOP_SET(ext2_spec_vops);
2111 VNODEOP_SET(ext2_fifo_vops);
2117 ext2_vnoperate(struct vop_generic_args *ap)
2119 return (VOCALL(&ext2_vnode_vops, ap));
2123 * ext2_vnoperatefifo()
2126 ext2_vnoperatefifo(struct vop_generic_args *ap)
2128 return (VOCALL(&ext2_fifo_vops, ap));