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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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 $
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 "ext2_mount.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) {
360 error = vn_lock(vp, LK_EXCLUSIVE | LK_FAILRECLAIM);
365 if ((nlink_t)ip->i_nlink >= LINK_MAX) {
369 if (ip->i_flags & (IMMUTABLE | APPEND)) {
374 ip->i_flag |= IN_CHANGE;
375 error = EXT2_UPDATE(vp, 1);
377 error = ext2_direnter(ip, tdvp, cnp);
380 ip->i_flag |= IN_CHANGE;
390 * Rename system call. fdvp, fvp are ref'd. tvp, tdvp are ref'd and locked.
391 * all vp's are released and must be in an unlocked state on return.
393 * ext2_rename(struct vnode *a_fdvp, struct vnode *a_fvp,
394 * struct componentname *a_fcnp, struct vnode *a_tdvp,
395 * struct vnode *a_tvp, struct componentname *a_tcnp)
398 ext2_rename(struct vop_old_rename_args *ap)
400 struct vnode *tvp = ap->a_tvp;
401 struct vnode *tdvp = ap->a_tdvp;
402 struct vnode *fvp = ap->a_fvp;
403 struct vnode *fdvp = ap->a_fdvp;
404 struct componentname *tcnp = ap->a_tcnp;
405 struct componentname *fcnp = ap->a_fcnp;
406 struct inode *ip, *xp, *dp;
407 struct dirtemplate dirbuf;
408 int doingdirectory = 0, oldparent = 0, newparent = 0;
413 * Check for cross-device rename.
415 if ((fvp->v_mount != tdvp->v_mount) ||
416 (tvp && (fvp->v_mount != tvp->v_mount)) ||
431 if (tvp && ((VTOI(tvp)->i_flags & (NOUNLINK | IMMUTABLE | APPEND)) ||
432 (VTOI(tdvp)->i_flags & APPEND))) {
438 * Renaming a file to itself has no effect. The upper layers should
439 * not call us in that case. Temporarily just warn if they do.
446 error = vn_lock(fvp, LK_EXCLUSIVE | LK_FAILRECLAIM);
451 * fvp, tvp, tdvp locked. fdvp not locked but note that fdvp may
456 if (ip->i_nlink >= LINK_MAX) {
461 if ((ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))
462 || (dp->i_flags & APPEND)) {
467 if ((ip->i_mode & IFMT) == IFDIR) {
469 * Avoid ".", "..", and aliases of "." for obvious reasons.
471 if ((fcnp->cn_namelen == 1 && fcnp->cn_nameptr[0] == '.') ||
472 dp == ip || (fcnp->cn_flags | tcnp->cn_flags) & CNP_ISDOTDOT ||
473 (ip->i_flag & IN_RENAME)) {
478 ip->i_flag |= IN_RENAME;
479 oldparent = dp->i_number;
484 * tvp is non-NULL if the target exists. fvp is still locked but
485 * we will unlock it soon. The 'bad' goto target requires dp and
486 * xp to be correctly assigned.
495 * 1) Bump link count while we're moving stuff
496 * around. If we crash somewhere before
497 * completing our work, the link count
498 * may be wrong, but correctable.
501 ip->i_flag |= IN_CHANGE;
502 if ((error = EXT2_UPDATE(fvp, 1)) != 0) {
508 * If ".." must be changed (ie the directory gets a new
509 * parent) then the source directory must not be in the
510 * directory heirarchy above the target, as this would
511 * orphan everything below the source directory. Also
512 * the user must have write permission in the source so
513 * as to be able to change "..". We must repeat the call
514 * to namei, as the parent directory is unlocked by the
515 * call to checkpath().
517 error = VOP_EACCESS(fvp, VWRITE, tcnp->cn_cred);
521 * tvp (if not NULL) and tdvp are locked. fvp and fdvp are not.
522 * dp and xp are set according to tdvp and tvp.
524 if (oldparent != dp->i_number)
525 newparent = dp->i_number;
526 if (doingdirectory && newparent) {
527 if (error) /* write access check above */
531 * Prepare for relookup, get rid of xp
539 * checkpath vput()'s tdvp (VTOI(dp)) on return no matter what,
540 * get an extra ref so we wind up with just an unlocked, ref'd
541 * tdvp. The 'out' target skips xp and tdvp cleanups. Our
542 * tdvp is now unlocked so we have to clean it up ourselves.
545 error = ext2_checkpath(ip, dp, tcnp->cn_cred);
546 tcnp->cn_flags |= CNP_PDIRUNLOCK;
552 * relookup no longer messes with the ref count. An unlocked
553 * tdvp must be passed and if no error occurs a locked tdvp
554 * will be returned. We have to use the out target again.
556 error = relookup(tdvp, &tvp, tcnp);
558 if (tcnp->cn_flags & CNP_PDIRUNLOCK)
566 * tdvp is locked at this point. in the RENAME case tvp may
567 * be NULL without an error, assign xp accordingly. The
568 * 'bad' target can be used again after this.
575 * 2) If target doesn't exist, link the target
576 * to the source and unlink the source.
577 * Otherwise, rewrite the target directory
578 * entry to reference the source inode and
579 * expunge the original entry's existence.
581 * tdvp and tvp are cleaned up by this code. tvp is only good if
585 if (dp->i_dev != ip->i_dev)
586 panic("ext2_rename: EXDEV");
588 * Account for ".." in new directory.
589 * When source and destination have the same
590 * parent we don't fool with the link count.
592 if (doingdirectory && newparent) {
593 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
598 dp->i_flag |= IN_CHANGE;
599 error = EXT2_UPDATE(tdvp, 1);
603 error = ext2_direnter(ip, tdvp, tcnp);
605 if (doingdirectory && newparent) {
607 dp->i_flag |= IN_CHANGE;
608 EXT2_UPDATE(tdvp, 1);
614 * manual cleanup, we can't use the bad or out target after
619 if (xp->i_dev != dp->i_dev || xp->i_dev != ip->i_dev)
620 panic("ext2_rename: EXDEV");
622 * Short circuit rename(foo, foo).
624 if (xp->i_number == ip->i_number)
625 panic("ext2_rename: same file");
627 * If the parent directory is "sticky", then the user must
628 * own the parent directory, or the destination of the rename,
629 * otherwise the destination may not be changed (except by
630 * root). This implements append-only directories.
632 if ((dp->i_mode & S_ISTXT) && tcnp->cn_cred->cr_uid != 0 &&
633 tcnp->cn_cred->cr_uid != dp->i_uid &&
634 xp->i_uid != tcnp->cn_cred->cr_uid) {
639 * Target must be empty if a directory and have no links
640 * to it. Also, ensure source and target are compatible
641 * (both directories, or both not directories).
643 if ((xp->i_mode&IFMT) == IFDIR) {
644 if (! ext2_dirempty(xp, dp->i_number, tcnp->cn_cred) ||
649 if (!doingdirectory) {
653 } else if (doingdirectory) {
657 error = ext2_dirrewrite(dp, ip, tcnp);
661 * If the target directory is in the same
662 * directory as the source directory,
663 * decrement the link count on the parent
664 * of the target directory.
666 if (doingdirectory && !newparent) {
668 dp->i_flag |= IN_CHANGE;
672 * manual cleanup, we can't use the bad or out target after
678 * Adjust the link count of the target to
679 * reflect the dirrewrite above. If this is
680 * a directory it is empty and there are
681 * no links to it, so we can squash the inode and
682 * any space associated with it. We disallowed
683 * renaming over top of a directory with links to
684 * it above, as the remaining link would point to
685 * a directory without "." or ".." entries.
688 if (doingdirectory) {
689 if (--xp->i_nlink != 0)
690 panic("ext2_rename: linked directory");
691 error = EXT2_TRUNCATE(tvp, (off_t)0, IO_SYNC,
694 xp->i_flag |= IN_CHANGE;
700 * tvp and tdvp have been cleaned up. The bad and out targets may
701 * not be used. fvp and fdvp are ref'd but not locked. ip
702 * still represents the old fvp and ip->i_flag may still have IN_RENAME
703 * set (if doingdirectory).
707 * 3) Unlink the source.
709 * fdvp is locked and ref'd. ap->a_fvp holds the old lookup unlocked
710 * and ref'd, fvp will hold the new lookup locked and ref'd.
712 * After the relookup ap->a_fvp must be released as part of our
713 * cleanup, not just fdvp and fvp. And, on success, fdvp and
714 * fvp will be locked so the bad and out targets cannot be used.
716 fcnp->cn_flags &= ~CNP_MODMASK;
717 fcnp->cn_flags |= CNP_LOCKPARENT;
718 KKASSERT(fcnp->cn_flags & CNP_PDIRUNLOCK);
719 error = relookup(fdvp, &fvp, fcnp);
722 * From name has disappeared.
725 panic("ext2_rename: lost dir entry");
726 /* ip->i_flag only sets IN_RENAME if doingdirectory */
728 if (fcnp->cn_flags & CNP_PDIRUNLOCK)
734 KKASSERT((fcnp->cn_flags & CNP_PDIRUNLOCK) == 0);
737 * This case shouldn't occur
741 * From name has disappeared.
744 panic("ext2_rename: lost dir entry");
745 /* ip->i_flag only sets IN_RENAME if doingdirectory */
753 * fvp and fdvp are both ref'd and locked.
759 * Ensure that the directory entry still exists and has not
760 * changed while the new name has been entered. If the source is
761 * a file then the entry may have been unlinked or renamed. In
762 * either case there is no further work to be done. If the source
763 * is a directory then it cannot have been rmdir'ed; its link
764 * count of three would cause a rmdir to fail with ENOTEMPTY.
765 * The IN_RENAME flag ensures that it cannot be moved by another
770 panic("ext2_rename: lost dir entry");
771 /* ip->i_flag only sets IN_RENAME if doingdirectory */
774 * If the source is a directory with a
775 * new parent, the link count of the old
776 * parent directory must be decremented
777 * and ".." set to point to the new parent.
779 if (doingdirectory && newparent) {
781 dp->i_flag |= IN_CHANGE;
782 error = vn_rdwr(UIO_READ, fvp, (caddr_t)&dirbuf,
783 sizeof (struct dirtemplate), (off_t)0,
784 UIO_SYSSPACE, IO_NODELOCKED,
785 tcnp->cn_cred, NULL);
787 /* Like ext2 little-endian: */
788 namlen = dirbuf.dotdot_type;
790 dirbuf.dotdot_name[0] != '.' ||
791 dirbuf.dotdot_name[1] != '.') {
792 ext2_dirbad(xp, (doff_t)12,
793 "rename: mangled dir");
795 dirbuf.dotdot_ino = newparent;
796 vn_rdwr(UIO_WRITE, fvp,
798 sizeof (struct dirtemplate),
799 (off_t)0, UIO_SYSSPACE,
800 IO_NODELOCKED|IO_SYNC,
801 tcnp->cn_cred, NULL);
805 error = ext2_dirremove(fdvp, fcnp);
808 xp->i_flag |= IN_CHANGE;
810 xp->i_flag &= ~IN_RENAME;
824 ip->i_flag &= ~IN_RENAME;
826 error = vn_lock(fvp, LK_EXCLUSIVE);
829 ip->i_flag |= IN_CHANGE;
830 ip->i_flag &= ~IN_RENAME;
841 * ext2_mkdir(struct vnode *a_dvp, struct vnode **a_vpp,
842 * struct componentname *a_cnp, struct vattr *a_vap)
845 ext2_mkdir(struct vop_old_mkdir_args *ap)
847 struct vnode *dvp = ap->a_dvp;
848 struct vattr *vap = ap->a_vap;
849 struct componentname *cnp = ap->a_cnp;
850 struct inode *ip, *dp;
852 struct dirtemplate dirtemplate, *dtp;
856 if ((nlink_t)dp->i_nlink >= LINK_MAX) {
860 dmode = vap->va_mode & 0777;
863 * Must simulate part of ext2_makeinode here to acquire the inode,
864 * but not have it entered in the parent directory. The entry is
865 * made later after writing "." and ".." entries.
867 error = EXT2_VALLOC(dvp, dmode, cnp->cn_cred, &tvp);
871 ip->i_gid = dp->i_gid;
875 struct ucred ucred, *ucp;
879 * if we are hacking owners here, (only do this where told to)
880 * and we are not giving it TOO root, (would subvert quotas)
881 * then go ahead and give it to the other user.
882 * The new directory also inherits the SUID bit.
883 * If user's UID and dir UID are the same,
884 * 'give it away' so that the SUID is still forced on.
886 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
887 (dp->i_mode & ISUID) && dp->i_uid) {
889 ip->i_uid = dp->i_uid;
891 if (dp->i_uid != cnp->cn_cred->cr_uid) {
893 * make sure the correct user gets charged
895 * Make a dummy credential for the victim.
896 * XXX This seems to never be accessed out of
897 * our context so a stack variable is ok.
900 ucred.cr_uid = ip->i_uid;
901 ucred.cr_ngroups = 1;
902 ucred.cr_groups[0] = dp->i_gid;
907 ip->i_uid = cnp->cn_cred->cr_uid;
910 if ((error = ext2_getinoquota(ip)) ||
911 (error = ext2_chkiq(ip, 1, ucp, 0))) {
912 EXT2_VFREE(tvp, ip->i_number, dmode);
919 ip->i_uid = cnp->cn_cred->cr_uid;
921 if ((error = ext2_getinoquota(ip)) ||
922 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
923 EXT2_VFREE(tvp, ip->i_number, dmode);
929 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
931 tvp->v_type = VDIR; /* Rest init'd in getnewvnode(). */
933 if (cnp->cn_flags & CNP_ISWHITEOUT)
934 ip->i_flags |= UF_OPAQUE;
935 error = EXT2_UPDATE(tvp, 1);
938 * The vnode must have a VM object in order to issue buffer cache
941 vinitvmio(tvp, 0, PAGE_SIZE, -1);
944 * Bump link count in parent directory
945 * to reflect work done below. Should
946 * be done before reference is created
947 * so reparation is possible if we crash.
950 dp->i_flag |= IN_CHANGE;
951 error = EXT2_UPDATE(dvp, 1);
955 /* Initialize directory with "." and ".." from static template. */
956 if (EXT2_HAS_INCOMPAT_FEATURE(ip->i_e2fs->s_es,
957 EXT2_FEATURE_INCOMPAT_FILETYPE))
958 dtp = &ext2_mastertemplate;
960 dtp = &ext2_omastertemplate;
962 dirtemplate.dot_ino = ip->i_number;
963 dirtemplate.dotdot_ino = dp->i_number;
964 /* note that in ext2 DIRBLKSIZ == blocksize, not DEV_BSIZE
965 * so let's just redefine it - for this function only
968 #define DIRBLKSIZ VTOI(dvp)->i_e2fs->s_blocksize
969 dirtemplate.dotdot_reclen = DIRBLKSIZ - 12;
970 error = vn_rdwr(UIO_WRITE, tvp, (caddr_t)&dirtemplate,
971 sizeof (dirtemplate), (off_t)0, UIO_SYSSPACE,
972 IO_NODELOCKED|IO_SYNC, cnp->cn_cred, NULL);
975 dp->i_flag |= IN_CHANGE;
978 if (DIRBLKSIZ > VFSTOEXT2(dvp->v_mount)->um_mountp->mnt_stat.f_bsize)
979 panic("ext2_mkdir: blksize"); /* XXX should grow with balloc() */
981 ip->i_size = DIRBLKSIZ;
982 ip->i_flag |= IN_CHANGE;
985 /* Directory set up, now install its entry in the parent directory. */
986 error = ext2_direnter(ip, dvp, cnp);
989 dp->i_flag |= IN_CHANGE;
993 * No need to do an explicit VOP_TRUNCATE here, vrele will do this
994 * for us because we set the link count to 0.
998 ip->i_flag |= IN_CHANGE;
1005 #define DIRBLKSIZ DEV_BSIZE
1009 * Rmdir system call.
1011 * ext2_rmdir(struct vnode *a_dvp, struct vnode *a_vp,
1012 * struct componentname *a_cnp)
1015 ext2_rmdir(struct vop_old_rmdir_args *ap)
1017 struct vnode *vp = ap->a_vp;
1018 struct vnode *dvp = ap->a_dvp;
1019 struct componentname *cnp = ap->a_cnp;
1020 struct inode *ip, *dp;
1027 * Verify the directory is empty (and valid).
1028 * (Rmdir ".." won't be valid since
1029 * ".." will contain a reference to
1030 * the current directory and thus be
1034 if (ip->i_nlink != 2 || !ext2_dirempty(ip, dp->i_number, cnp->cn_cred)) {
1038 if ((dp->i_flags & APPEND)
1039 || (ip->i_flags & (NOUNLINK | IMMUTABLE | APPEND))) {
1044 * Delete reference to directory before purging
1045 * inode. If we crash in between, the directory
1046 * will be reattached to lost+found,
1048 error = ext2_dirremove(dvp, cnp);
1052 dp->i_flag |= IN_CHANGE;
1055 * Truncate inode. The only stuff left
1056 * in the directory is "." and "..". The
1057 * "." reference is inconsequential since
1058 * we're quashing it. The ".." reference
1059 * has already been adjusted above. We've
1060 * removed the "." reference and the reference
1061 * in the parent directory, but there may be
1062 * other hard links so decrement by 2 and
1063 * worry about them later.
1066 error = EXT2_TRUNCATE(vp, (off_t)0, IO_SYNC, cnp->cn_cred);
1067 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY);
1073 * symlink -- make a symbolic link
1075 * ext2_symlink(struct vnode *a_dvp, struct vnode **a_vpp,
1076 * struct componentname *a_cnp, struct vattr *a_vap,
1080 ext2_symlink(struct vop_old_symlink_args *ap)
1082 struct vnode *vp, **vpp = ap->a_vpp;
1086 error = ext2_makeinode(IFLNK | ap->a_vap->va_mode, ap->a_dvp,
1091 len = strlen(ap->a_target);
1092 if (len < vp->v_mount->mnt_maxsymlinklen) {
1094 bcopy(ap->a_target, (char *)ip->i_shortlink, len);
1096 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1099 * Make sure we have a VM object in order to use
1102 if (vp->v_object == NULL)
1103 vinitvmio(vp, 0, PAGE_SIZE, -1);
1105 error = vn_rdwr(UIO_WRITE, vp, ap->a_target, len, (off_t)0,
1106 UIO_SYSSPACE, IO_NODELOCKED,
1107 ap->a_cnp->cn_cred, NULL);
1117 * Allocate a new inode.
1120 ext2_makeinode(int mode, struct vnode *dvp, struct vnode **vpp,
1121 struct componentname *cnp)
1123 struct inode *ip, *pdir;
1129 if ((mode & IFMT) == 0)
1132 error = EXT2_VALLOC(dvp, mode, cnp->cn_cred, &tvp);
1137 ip->i_gid = pdir->i_gid;
1141 struct ucred ucred, *ucp;
1146 * not the owner of the directory,
1147 * and we are hacking owners here, (only do this where told to)
1148 * and we are not giving it TOO root, (would subvert quotas)
1149 * then go ahead and give it to the other user.
1150 * Note that this drops off the execute bits for security.
1152 if ( (dvp->v_mount->mnt_flag & MNT_SUIDDIR) &&
1153 (pdir->i_mode & ISUID) &&
1154 (pdir->i_uid != cnp->cn_cred->cr_uid) && pdir->i_uid) {
1155 ip->i_uid = pdir->i_uid;
1159 * make sure the correct user gets charged
1161 * Quickly knock up a dummy credential for the victim.
1162 * XXX This seems to never be accessed out of our
1163 * context so a stack variable is ok.
1166 ucred.cr_uid = ip->i_uid;
1167 ucred.cr_ngroups = 1;
1168 ucred.cr_groups[0] = pdir->i_gid;
1172 ip->i_uid = cnp->cn_cred->cr_uid;
1176 if ((error = ext2_getinoquota(ip)) ||
1177 (error = ext2_chkiq(ip, 1, ucp, 0))) {
1178 EXT2_VFREE(tvp, ip->i_number, mode);
1185 ip->i_uid = cnp->cn_cred->cr_uid;
1187 if ((error = ext2_getinoquota(ip)) ||
1188 (error = ext2_chkiq(ip, 1, cnp->cn_cred, 0))) {
1189 EXT2_VFREE(tvp, ip->i_number, mode);
1195 ip->i_flag |= IN_ACCESS | IN_CHANGE | IN_UPDATE;
1197 tvp->v_type = IFTOVT(mode); /* Rest init'd in getnewvnode(). */
1199 if ((ip->i_mode & ISGID) && !groupmember(ip->i_gid, cnp->cn_cred) &&
1200 priv_check_cred(cnp->cn_cred, PRIV_VFS_SETGID, 0))
1201 ip->i_mode &= ~ISGID;
1203 if (cnp->cn_flags & CNP_ISWHITEOUT)
1204 ip->i_flags |= UF_OPAQUE;
1207 * Regular files and directories need VM objects. Softlinks do
1208 * not (not immediately anyway).
1210 if (tvp->v_type == VREG || tvp->v_type == VDIR)
1211 vinitvmio(tvp, 0, PAGE_SIZE, -1);
1214 * Make sure inode goes to disk before directory entry.
1216 error = EXT2_UPDATE(tvp, 1);
1219 error = ext2_direnter(ip, dvp, cnp);
1228 * Write error occurred trying to update the inode
1229 * or the directory so must deallocate the inode.
1232 ip->i_flag |= IN_CHANGE;
1238 ext2_itimes(struct vnode *vp)
1244 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE)) == 0)
1246 if ((vp->v_type == VBLK || vp->v_type == VCHR) && !DOINGSOFTDEP(vp))
1247 ip->i_flag |= IN_LAZYMOD;
1249 ip->i_flag |= IN_MODIFIED;
1250 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) {
1252 if (ip->i_flag & IN_ACCESS) {
1253 ip->i_atime = ts.tv_sec;
1254 ip->i_atimensec = ts.tv_nsec;
1256 if (ip->i_flag & IN_UPDATE) {
1257 ip->i_mtime = ts.tv_sec;
1258 ip->i_mtimensec = ts.tv_nsec;
1261 if (ip->i_flag & IN_CHANGE) {
1262 ip->i_ctime = ts.tv_sec;
1263 ip->i_ctimensec = ts.tv_nsec;
1266 ip->i_flag &= ~(IN_ACCESS | IN_CHANGE | IN_UPDATE);
1274 * ext2_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred,
1275 * struct file *a_fp)
1280 ext2_open(struct vop_open_args *ap)
1282 struct vnode *vp = ap->a_vp;
1285 * Files marked append-only must be opened for appending.
1287 if ((VTOI(vp)->i_flags & APPEND) &&
1288 (ap->a_mode & (FWRITE | O_APPEND)) == FWRITE) {
1291 return (vop_stdopen(ap));
1297 * Update the times on the inode.
1299 * ext2_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1304 ext2_close(struct vop_close_args *ap)
1306 struct vnode *vp = ap->a_vp;
1308 if (VREFCNT(vp) > 1)
1310 return (vop_stdclose(ap));
1314 * ext2_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred)
1318 ext2_access(struct vop_access_args *ap)
1320 struct vnode *vp = ap->a_vp;
1321 struct inode *ip = VTOI(vp);
1325 if (ap->a_mode & VWRITE) {
1326 switch (vp->v_type) {
1330 if ((error = ext2_getinoquota(ip)) != 0)
1339 error = vop_helper_access(ap, ip->i_uid, ip->i_gid, ip->i_mode,
1345 * ext2_getattr(struct vnode *a_vp, struct vattr *a_vap)
1350 ext2_getattr(struct vop_getattr_args *ap)
1352 struct vnode *vp = ap->a_vp;
1353 struct inode *ip = VTOI(vp);
1354 struct vattr *vap = ap->a_vap;
1358 * Copy from inode table
1360 vap->va_fsid = dev2udev(ip->i_dev);
1361 vap->va_fileid = ip->i_number;
1362 vap->va_mode = ip->i_mode & ~IFMT;
1363 vap->va_nlink = VFSTOEXT2(vp->v_mount)->um_i_effnlink_valid ?
1364 ip->i_effnlink : ip->i_nlink;
1365 vap->va_uid = ip->i_uid;
1366 vap->va_gid = ip->i_gid;
1367 vap->va_rmajor = umajor(ip->i_rdev);
1368 vap->va_rminor = uminor(ip->i_rdev);
1369 vap->va_size = ip->i_din.di_size;
1370 vap->va_atime.tv_sec = ip->i_atime;
1371 vap->va_atime.tv_nsec = ip->i_atimensec;
1372 vap->va_mtime.tv_sec = ip->i_mtime;
1373 vap->va_mtime.tv_nsec = ip->i_mtimensec;
1374 vap->va_ctime.tv_sec = ip->i_ctime;
1375 vap->va_ctime.tv_nsec = ip->i_ctimensec;
1376 vap->va_flags = ip->i_flags;
1377 vap->va_gen = ip->i_gen;
1378 vap->va_blocksize = vp->v_mount->mnt_stat.f_iosize;
1379 vap->va_bytes = dbtob((u_quad_t)ip->i_blocks);
1380 vap->va_type = IFTOVT(ip->i_mode);
1381 vap->va_filerev = ip->i_modrev;
1386 * Set attribute vnode op. called from several syscalls
1388 * ext2_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred)
1392 ext2_setattr(struct vop_setattr_args *ap)
1394 struct vattr *vap = ap->a_vap;
1395 struct vnode *vp = ap->a_vp;
1396 struct inode *ip = VTOI(vp);
1397 struct ucred *cred = ap->a_cred;
1401 * Check for unsettable attributes.
1403 if ((vap->va_type != VNON) || (vap->va_nlink != VNOVAL) ||
1404 (vap->va_fsid != VNOVAL) || (vap->va_fileid != VNOVAL) ||
1405 (vap->va_blocksize != VNOVAL) || (vap->va_rmajor != VNOVAL) ||
1406 ((int)vap->va_bytes != VNOVAL) || (vap->va_gen != VNOVAL)) {
1409 if (vap->va_flags != VNOVAL) {
1410 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1412 if (cred->cr_uid != ip->i_uid &&
1413 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)))
1416 * Note that a root chflags becomes a user chflags when
1417 * we are jailed, unless the jail.chflags_allowed sysctl
1420 if (cred->cr_uid == 0 &&
1421 (!jailed(cred) || jail_chflags_allowed)) {
1423 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND)) &&
1426 ip->i_flags = vap->va_flags;
1429 & (SF_NOUNLINK | SF_IMMUTABLE | SF_APPEND) ||
1430 (vap->va_flags & UF_SETTABLE) != vap->va_flags)
1432 ip->i_flags &= SF_SETTABLE;
1433 ip->i_flags |= (vap->va_flags & UF_SETTABLE);
1435 ip->i_flag |= IN_CHANGE;
1436 if (vap->va_flags & (IMMUTABLE | APPEND))
1439 if (ip->i_flags & (IMMUTABLE | APPEND))
1442 * Go through the fields and update iff not VNOVAL.
1444 if (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL) {
1445 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1447 if ((error = ext2_chown(vp, vap->va_uid, vap->va_gid, cred)) != 0)
1450 if (vap->va_size != VNOVAL) {
1452 * Disallow write attempts on read-only filesystems;
1453 * unless the file is a socket, fifo, or a block or
1454 * character device resident on the filesystem.
1456 switch (vp->v_type) {
1461 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1467 if ((error = EXT2_TRUNCATE(vp, vap->va_size, 0, cred)) != 0)
1471 if (vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL) {
1472 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1474 if (cred->cr_uid != ip->i_uid &&
1475 (error = priv_check_cred(cred, PRIV_VFS_SETATTR, 0)) &&
1476 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 ||
1477 (error = VOP_EACCESS(vp, VWRITE, cred))))
1479 if (vap->va_atime.tv_sec != VNOVAL)
1480 ip->i_flag |= IN_ACCESS;
1481 if (vap->va_mtime.tv_sec != VNOVAL)
1482 ip->i_flag |= IN_CHANGE | IN_UPDATE;
1484 if (vap->va_atime.tv_sec != VNOVAL) {
1485 ip->i_atime = vap->va_atime.tv_sec;
1486 ip->i_atimensec = vap->va_atime.tv_nsec;
1488 if (vap->va_mtime.tv_sec != VNOVAL) {
1489 ip->i_mtime = vap->va_mtime.tv_sec;
1490 ip->i_mtimensec = vap->va_mtime.tv_nsec;
1492 error = EXT2_UPDATE(vp, 0);
1497 if (vap->va_mode != (mode_t)VNOVAL) {
1498 if (vp->v_mount->mnt_flag & MNT_RDONLY)
1500 error = ext2_chmod(vp, (int)vap->va_mode, cred);
1502 VN_KNOTE(vp, NOTE_ATTRIB);
1507 * Change the mode on a file.
1508 * Inode must be locked before calling.
1511 ext2_chmod(struct vnode *vp, int mode, struct ucred *cred)
1513 struct inode *ip = VTOI(vp);
1516 if (cred->cr_uid != ip->i_uid) {
1517 error = priv_check_cred(cred, PRIV_VFS_CHMOD, 0);
1522 if (vp->v_type != VDIR && (mode & S_ISTXT))
1524 if (!groupmember(ip->i_gid, cred) && (mode & ISGID))
1527 ip->i_mode &= ~ALLPERMS;
1528 ip->i_mode |= (mode & ALLPERMS);
1529 ip->i_flag |= IN_CHANGE;
1534 * Perform chown operation on inode ip;
1535 * inode must be locked prior to call.
1538 ext2_chown(struct vnode *vp, uid_t uid, gid_t gid, struct ucred *cred)
1540 struct inode *ip = VTOI(vp);
1549 if (uid == (uid_t)VNOVAL)
1551 if (gid == (gid_t)VNOVAL)
1554 * If we don't own the file, are trying to change the owner
1555 * of the file, or are not a member of the target group,
1556 * the caller must be superuser or the call fails.
1558 if ((cred->cr_uid != ip->i_uid || uid != ip->i_uid ||
1559 (gid != ip->i_gid && !(cred->cr_gid == gid ||
1560 groupmember(gid, cred)))) &&
1561 (error = priv_check_cred(cred, PRIV_VFS_CHOWN, 0)))
1566 if ((error = ext2_getinoquota(ip)) != 0)
1569 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1570 ip->i_dquot[USRQUOTA] = NODQUOT;
1573 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1574 ip->i_dquot[GRPQUOTA] = NODQUOT;
1576 change = ip->i_blocks;
1577 (void) ext2_chkdq(ip, -change, cred, CHOWN);
1578 (void) ext2_chkiq(ip, -1, cred, CHOWN);
1579 for (i = 0; i < MAXQUOTAS; i++) {
1580 ext2_dqrele(vp, ip->i_dquot[i]);
1581 ip->i_dquot[i] = NODQUOT;
1587 if ((error = ext2_getinoquota(ip)) == 0) {
1589 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1590 ip->i_dquot[USRQUOTA] = NODQUOT;
1593 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1594 ip->i_dquot[GRPQUOTA] = NODQUOT;
1596 if ((error = ext2_chkdq(ip, change, cred, CHOWN)) == 0) {
1597 if ((error = ext2_chkiq(ip, 1, cred, CHOWN)) == 0)
1600 (void)ext2_chkdq(ip, -change, cred, CHOWN|FORCE);
1602 for (i = 0; i < MAXQUOTAS; i++) {
1603 ext2_dqrele(vp, ip->i_dquot[i]);
1604 ip->i_dquot[i] = NODQUOT;
1609 if (ext2_getinoquota(ip) == 0) {
1611 ext2_dqrele(vp, ip->i_dquot[USRQUOTA]);
1612 ip->i_dquot[USRQUOTA] = NODQUOT;
1615 ext2_dqrele(vp, ip->i_dquot[GRPQUOTA]);
1616 ip->i_dquot[GRPQUOTA] = NODQUOT;
1618 (void) ext2_chkdq(ip, change, cred, FORCE|CHOWN);
1619 (void) ext2_chkiq(ip, 1, cred, FORCE|CHOWN);
1620 (void) ext2_getinoquota(ip);
1624 if (ext2_getinoquota(ip))
1625 panic("ext2_chown: lost quota");
1627 ip->i_flag |= IN_CHANGE;
1628 if (cred->cr_uid != 0 && (ouid != uid || ogid != gid))
1629 ip->i_mode &= ~(ISUID | ISGID);
1636 * NB Currently unsupported.
1638 * ext2_mmap(struct vnode *a_vp, int a_fflags, struct ucred *a_cred)
1643 ext2_mmap(struct vop_mmap_args *ap)
1649 * whiteout vnode call
1651 * ext2_whiteout(struct vnode *a_dvp, struct componentname *a_cnp, int a_flags)
1655 ext2_whiteout(struct vop_old_whiteout_args *ap)
1657 return (EOPNOTSUPP);
1661 * Return target name of a symbolic link
1663 * ext2_readlink(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred)
1667 ext2_readlink(struct vop_readlink_args *ap)
1669 struct vnode *vp = ap->a_vp;
1670 struct inode *ip = VTOI(vp);
1674 if ((isize < vp->v_mount->mnt_maxsymlinklen) ||
1675 (ip->i_din.di_blocks == 0)) { /* XXX - for old fastlink support */
1676 uiomove((char *)ip->i_shortlink, isize, ap->a_uio);
1679 return (VOP_READ(vp, ap->a_uio, 0, ap->a_cred));
1683 * Calculate the logical to physical mapping if not done already,
1684 * then call the device strategy routine.
1686 * In order to be able to swap to a file, the VOP_BMAP operation may not
1687 * deadlock on memory. See ext2_bmap() for details.
1689 * ext2_strategy(struct vnode *a_vp, struct bio *a_bio)
1693 ext2_strategy(struct vop_strategy_args *ap)
1695 struct bio *bio = ap->a_bio;
1697 struct buf *bp = bio->bio_buf;
1698 struct vnode *vp = ap->a_vp;
1703 if (vp->v_type == VBLK || vp->v_type == VCHR)
1704 panic("ext2_strategy: spec");
1705 nbio = push_bio(bio);
1706 if (nbio->bio_offset == NOOFFSET) {
1707 error = VOP_BMAP(vp, bio->bio_offset, &nbio->bio_offset,
1708 NULL, NULL, bp->b_cmd);
1710 bp->b_error = error;
1711 bp->b_flags |= B_ERROR;
1712 /* I/O was never started on nbio, must biodone(bio) */
1716 if (nbio->bio_offset == NOOFFSET)
1719 if (nbio->bio_offset == NOOFFSET) {
1720 /* I/O was never started on nbio, must biodone(bio) */
1724 vn_strategy(ip->i_devvp, nbio);
1729 * Print out the contents of an inode.
1731 * ext2_print(struct vnode *a_vp)
1735 ext2_print(struct vop_print_args *ap)
1737 struct vnode *vp = ap->a_vp;
1738 struct inode *ip = VTOI(vp);
1740 kprintf("tag VT_EXT2FS, ino %lu, on dev %s (%d, %d)",
1741 (u_long)ip->i_number, devtoname(ip->i_dev), major(ip->i_dev),
1743 if (vp->v_type == VFIFO)
1745 lockmgr_printinfo(&vp->v_lock);
1751 * Read wrapper for fifos.
1753 * ext2fifo_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1754 * struct ucred *a_cred)
1758 ext2fifo_read(struct vop_read_args *ap)
1765 resid = uio->uio_resid;
1766 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1767 ip = VTOI(ap->a_vp);
1768 if ((ap->a_vp->v_mount->mnt_flag & MNT_NOATIME) == 0 && ip != NULL &&
1769 (uio->uio_resid != resid || (error == 0 && resid != 0)))
1770 VTOI(ap->a_vp)->i_flag |= IN_ACCESS;
1775 * Write wrapper for fifos.
1777 * ext2fifo_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag,
1778 * struct ucred *a_cred)
1782 ext2fifo_write(struct vop_write_args *ap)
1789 resid = uio->uio_resid;
1790 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1791 ip = VTOI(ap->a_vp);
1792 if (ip != NULL && (uio->uio_resid != resid || (error == 0 && resid != 0)))
1793 VTOI(ap->a_vp)->i_flag |= IN_CHANGE | IN_UPDATE;
1798 * Close wrapper for fifos.
1800 * Update the times on the inode then do device close.
1802 * ext2fifo_close(struct vnode *a_vp, int a_fflag, struct ucred *a_cred)
1806 ext2fifo_close(struct vop_close_args *ap)
1808 struct vnode *vp = ap->a_vp;
1810 if (VREFCNT(vp) > 1)
1812 return (VOCALL(&fifo_vnode_vops, &ap->a_head));
1816 * Kqfilter wrapper for fifos.
1818 * Fall through to ext2 kqfilter routines if needed
1822 ext2fifo_kqfilter(struct vop_kqfilter_args *ap)
1826 error = VOCALL(&fifo_vnode_vops, &ap->a_head);
1828 error = ext2_kqfilter(ap);
1833 * Return POSIX pathconf information applicable to ext2 filesystems.
1835 * ext2_pathconf(struct vnode *a_vp, int a_name, int *a_retval)
1839 ext2_pathconf(struct vop_pathconf_args *ap)
1841 switch (ap->a_name) {
1843 *ap->a_retval = LINK_MAX;
1846 *ap->a_retval = NAME_MAX;
1849 *ap->a_retval = PATH_MAX;
1852 *ap->a_retval = PIPE_BUF;
1854 case _PC_CHOWN_RESTRICTED:
1867 * Advisory record locking support
1869 * ext2_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, struct flock *a_fl,
1874 ext2_advlock(struct vop_advlock_args *ap)
1876 struct inode *ip = VTOI(ap->a_vp);
1878 return (lf_advlock(ap, &(ip->i_lockf), ip->i_size));
1882 * Initialize the vnode associated with a new inode, handle aliased
1886 ext2_vinit(struct mount *mntp, struct vnode **vpp)
1895 switch(vp->v_type = IFTOVT(ip->i_mode)) {
1898 vp->v_ops = &mntp->mnt_vn_spec_ops;
1899 addaliasu(vp, umajor(ip->i_rdev), uminor(ip->i_rdev));
1902 vp->v_ops = &mntp->mnt_vn_fifo_ops;
1906 vinitvmio(vp, ip->i_size, PAGE_SIZE, -1); /* XXX */
1909 if ((ip->i_size >= vp->v_mount->mnt_maxsymlinklen) &&
1910 ip->i_din.di_blocks != 0
1912 vinitvmio(vp, ip->i_size, PAGE_SIZE, -1);
1920 if (ip->i_number == EXT2_ROOTINO)
1921 vp->v_flag |= VROOT;
1923 * Initialize modrev times
1925 getmicrouptime(&tv);
1926 SETHIGH(ip->i_modrev, tv.tv_sec);
1927 SETLOW(ip->i_modrev, tv.tv_usec * 4294);
1932 static struct filterops ext2read_filtops =
1933 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2read };
1934 static struct filterops ext2write_filtops =
1935 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2write };
1936 static struct filterops ext2vnode_filtops =
1937 { FILTEROP_ISFD, NULL, filt_ext2detach, filt_ext2vnode };
1940 * ext2_kqfilter(struct vnode *a_vp, struct knote *a_kn)
1943 ext2_kqfilter(struct vop_kqfilter_args *ap)
1945 struct vnode *vp = ap->a_vp;
1946 struct knote *kn = ap->a_kn;
1948 switch (kn->kn_filter) {
1950 kn->kn_fop = &ext2read_filtops;
1953 kn->kn_fop = &ext2write_filtops;
1956 kn->kn_fop = &ext2vnode_filtops;
1959 return (EOPNOTSUPP);
1962 kn->kn_hook = (caddr_t)vp;
1964 /* XXX: kq token actually protects the list */
1965 lwkt_gettoken(&vp->v_token);
1966 knote_insert(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1967 lwkt_reltoken(&vp->v_token);
1973 filt_ext2detach(struct knote *kn)
1975 struct vnode *vp = (struct vnode *)kn->kn_hook;
1977 lwkt_gettoken(&vp->v_token);
1978 knote_remove(&vp->v_pollinfo.vpi_kqinfo.ki_note, kn);
1979 lwkt_reltoken(&vp->v_token);
1984 filt_ext2read(struct knote *kn, long hint)
1986 struct vnode *vp = (struct vnode *)kn->kn_hook;
1987 struct inode *ip = VTOI(vp);
1991 * filesystem is gone, so set the EOF flag and schedule
1992 * the knote for deletion.
1994 if (hint == NOTE_REVOKE) {
1995 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
1998 off = ip->i_size - kn->kn_fp->f_offset;
1999 kn->kn_data = (off < INTPTR_MAX) ? off : INTPTR_MAX;
2000 if (kn->kn_sfflags & NOTE_OLDAPI)
2002 return (kn->kn_data != 0);
2007 filt_ext2write(struct knote *kn, long hint)
2010 * filesystem is gone, so set the EOF flag and schedule
2011 * the knote for deletion.
2013 if (hint == NOTE_REVOKE)
2014 kn->kn_flags |= (EV_EOF | EV_NODATA | EV_ONESHOT);
2021 filt_ext2vnode(struct knote *kn, long hint)
2023 if (kn->kn_sfflags & hint)
2024 kn->kn_fflags |= hint;
2025 if (hint == NOTE_REVOKE) {
2026 kn->kn_flags |= (EV_EOF | EV_NODATA);
2029 return (kn->kn_fflags != 0);
2032 struct vop_ops ext2_vnode_vops = {
2033 .vop_default = vop_defaultop,
2034 .vop_fsync = ext2_fsync,
2035 .vop_read = ext2_read,
2036 .vop_reallocblks = ext2_reallocblks,
2037 .vop_write = ext2_write,
2038 .vop_access = ext2_access,
2039 .vop_advlock = ext2_advlock,
2040 .vop_bmap = ext2_bmap,
2041 .vop_old_lookup = ext2_lookup,
2042 .vop_close = ext2_close,
2043 .vop_old_create = ext2_create,
2044 .vop_getattr = ext2_getattr,
2045 .vop_inactive = ext2_inactive,
2046 .vop_old_link = ext2_link,
2047 .vop_old_mkdir = ext2_mkdir,
2048 .vop_old_mknod = ext2_mknod,
2049 .vop_mmap = ext2_mmap,
2050 .vop_open = ext2_open,
2051 .vop_pathconf = ext2_pathconf,
2052 .vop_kqfilter = ext2_kqfilter,
2053 .vop_print = ext2_print,
2054 .vop_readdir = ext2_readdir,
2055 .vop_readlink = ext2_readlink,
2056 .vop_reclaim = ext2_reclaim,
2057 .vop_old_remove = ext2_remove,
2058 .vop_old_rename = ext2_rename,
2059 .vop_old_rmdir = ext2_rmdir,
2060 .vop_setattr = ext2_setattr,
2061 .vop_strategy = ext2_strategy,
2062 .vop_old_symlink = ext2_symlink,
2063 .vop_old_whiteout = ext2_whiteout,
2064 .vop_getpages = vop_stdgetpages,
2065 .vop_putpages = vop_stdputpages
2068 struct vop_ops ext2_spec_vops = {
2069 .vop_default = vop_defaultop,
2070 .vop_fsync = ext2_fsync,
2071 .vop_access = ext2_access,
2072 .vop_close = ext2_close,
2073 .vop_getattr = ext2_getattr,
2074 .vop_inactive = ext2_inactive,
2075 .vop_print = ext2_print,
2076 .vop_read = vop_stdnoread,
2077 .vop_reclaim = ext2_reclaim,
2078 .vop_setattr = ext2_setattr,
2079 .vop_write = vop_stdnowrite
2082 struct vop_ops ext2_fifo_vops = {
2083 .vop_default = ext2_vnoperatefifo,
2084 .vop_fsync = ext2_fsync,
2085 .vop_access = ext2_access,
2086 .vop_close = ext2fifo_close,
2087 .vop_getattr = ext2_getattr,
2088 .vop_inactive = ext2_inactive,
2089 .vop_kqfilter = ext2fifo_kqfilter,
2090 .vop_print = ext2_print,
2091 .vop_read = ext2fifo_read,
2092 .vop_reclaim = ext2_reclaim,
2093 .vop_setattr = ext2_setattr,
2094 .vop_write = ext2fifo_write
2097 VNODEOP_SET(ext2_vnode_vops);
2098 VNODEOP_SET(ext2_spec_vops);
2099 VNODEOP_SET(ext2_fifo_vops);
2105 ext2_vnoperate(struct vop_generic_args *ap)
2107 return (VOCALL(&ext2_vnode_vops, ap));
2111 * ext2_vnoperatefifo()
2114 ext2_vnoperatefifo(struct vop_generic_args *ap)
2116 return (VOCALL(&ext2_fifo_vops, ap));