ffs_vfsops.c revision 1.339.2.5 1 /* $NetBSD: ffs_vfsops.c,v 1.339.2.5 2017/01/07 08:56:53 pgoyette Exp $ */
2
3 /*-
4 * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Wasabi Systems, Inc, and by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Copyright (c) 1989, 1991, 1993, 1994
34 * The Regents of the University of California. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)ffs_vfsops.c 8.31 (Berkeley) 5/20/95
61 */
62
63 #include <sys/cdefs.h>
64 __KERNEL_RCSID(0, "$NetBSD: ffs_vfsops.c,v 1.339.2.5 2017/01/07 08:56:53 pgoyette Exp $");
65
66 #if defined(_KERNEL_OPT)
67 #include "opt_ffs.h"
68 #include "opt_quota.h"
69 #include "opt_wapbl.h"
70 #endif
71
72 #include <sys/param.h>
73 #include <sys/systm.h>
74 #include <sys/namei.h>
75 #include <sys/proc.h>
76 #include <sys/kernel.h>
77 #include <sys/vnode.h>
78 #include <sys/socket.h>
79 #include <sys/mount.h>
80 #include <sys/buf.h>
81 #include <sys/device.h>
82 #include <sys/disk.h>
83 #include <sys/mbuf.h>
84 #include <sys/file.h>
85 #include <sys/disklabel.h>
86 #include <sys/ioctl.h>
87 #include <sys/errno.h>
88 #include <sys/kmem.h>
89 #include <sys/pool.h>
90 #include <sys/lock.h>
91 #include <sys/sysctl.h>
92 #include <sys/conf.h>
93 #include <sys/kauth.h>
94 #include <sys/wapbl.h>
95 #include <sys/fstrans.h>
96 #include <sys/module.h>
97
98 #include <miscfs/genfs/genfs.h>
99 #include <miscfs/specfs/specdev.h>
100
101 #include <ufs/ufs/quota.h>
102 #include <ufs/ufs/ufsmount.h>
103 #include <ufs/ufs/inode.h>
104 #include <ufs/ufs/dir.h>
105 #include <ufs/ufs/ufs_extern.h>
106 #include <ufs/ufs/ufs_bswap.h>
107 #include <ufs/ufs/ufs_wapbl.h>
108
109 #include <ufs/ffs/fs.h>
110 #include <ufs/ffs/ffs_extern.h>
111
112 #ifdef WAPBL
113 MODULE(MODULE_CLASS_VFS, ffs, "wapbl");
114 #else
115 MODULE(MODULE_CLASS_VFS, ffs, NULL);
116 #endif
117
118 static int ffs_vfs_fsync(vnode_t *, int);
119 static int ffs_superblock_validate(struct fs *);
120 static int ffs_is_appleufs(struct vnode *, struct fs *);
121
122 static int ffs_init_vnode(struct ufsmount *, struct vnode *, ino_t);
123 static void ffs_deinit_vnode(struct ufsmount *, struct vnode *);
124
125 static struct sysctllog *ffs_sysctl_log;
126
127 static kauth_listener_t ffs_snapshot_listener;
128
129 /* how many times ffs_init() was called */
130 int ffs_initcount = 0;
131
132 #ifdef DEBUG_FFS_MOUNT
133 #define DPRINTF(_fmt, args...) printf("%s: " _fmt "\n", __func__, ##args)
134 #else
135 #define DPRINTF(_fmt, args...) do {} while (/*CONSTCOND*/0)
136 #endif
137
138 extern const struct vnodeopv_desc ffs_vnodeop_opv_desc;
139 extern const struct vnodeopv_desc ffs_specop_opv_desc;
140 extern const struct vnodeopv_desc ffs_fifoop_opv_desc;
141
142 const struct vnodeopv_desc * const ffs_vnodeopv_descs[] = {
143 &ffs_vnodeop_opv_desc,
144 &ffs_specop_opv_desc,
145 &ffs_fifoop_opv_desc,
146 NULL,
147 };
148
149 struct vfsops ffs_vfsops = {
150 .vfs_name = MOUNT_FFS,
151 .vfs_min_mount_data = sizeof (struct ufs_args),
152 .vfs_mount = ffs_mount,
153 .vfs_start = ufs_start,
154 .vfs_unmount = ffs_unmount,
155 .vfs_root = ufs_root,
156 .vfs_quotactl = ufs_quotactl,
157 .vfs_statvfs = ffs_statvfs,
158 .vfs_sync = ffs_sync,
159 .vfs_vget = ufs_vget,
160 .vfs_loadvnode = ffs_loadvnode,
161 .vfs_newvnode = ffs_newvnode,
162 .vfs_fhtovp = ffs_fhtovp,
163 .vfs_vptofh = ffs_vptofh,
164 .vfs_init = ffs_init,
165 .vfs_reinit = ffs_reinit,
166 .vfs_done = ffs_done,
167 .vfs_mountroot = ffs_mountroot,
168 .vfs_snapshot = ffs_snapshot,
169 .vfs_extattrctl = ffs_extattrctl,
170 .vfs_suspendctl = ffs_suspendctl,
171 .vfs_renamelock_enter = genfs_renamelock_enter,
172 .vfs_renamelock_exit = genfs_renamelock_exit,
173 .vfs_fsync = ffs_vfs_fsync,
174 .vfs_opv_descs = ffs_vnodeopv_descs
175 };
176
177 static const struct genfs_ops ffs_genfsops = {
178 .gop_size = ffs_gop_size,
179 .gop_alloc = ufs_gop_alloc,
180 .gop_write = genfs_gop_write,
181 .gop_markupdate = ufs_gop_markupdate,
182 };
183
184 static const struct ufs_ops ffs_ufsops = {
185 .uo_itimes = ffs_itimes,
186 .uo_update = ffs_update,
187 .uo_truncate = ffs_truncate,
188 .uo_balloc = ffs_balloc,
189 .uo_snapgone = ffs_snapgone,
190 .uo_bufrd = ffs_bufrd,
191 .uo_bufwr = ffs_bufwr,
192 };
193
194 static int
195 ffs_checkrange(struct mount *mp, uint32_t ino)
196 {
197 struct fs *fs = VFSTOUFS(mp)->um_fs;
198
199 if (ino < UFS_ROOTINO || ino >= fs->fs_ncg * fs->fs_ipg) {
200 DPRINTF("out of range %u\n", ino);
201 return ESTALE;
202 }
203
204 /*
205 * Need to check if inode is initialized because ffsv2 does
206 * lazy initialization and we can get here from nfs_fhtovp
207 */
208 if (fs->fs_magic != FS_UFS2_MAGIC)
209 return 0;
210
211 struct buf *bp;
212 int cg = ino_to_cg(fs, ino);
213 struct ufsmount *ump = VFSTOUFS(mp);
214
215 int error = bread(ump->um_devvp, FFS_FSBTODB(fs, cgtod(fs, cg)),
216 (int)fs->fs_cgsize, B_MODIFY, &bp);
217 if (error) {
218 DPRINTF("error %d reading cg %d ino %u\n", error, cg, ino);
219 return error;
220 }
221
222 const int needswap = UFS_FSNEEDSWAP(fs);
223
224 struct cg *cgp = (struct cg *)bp->b_data;
225 if (!cg_chkmagic(cgp, needswap)) {
226 brelse(bp, 0);
227 DPRINTF("bad cylinder group magic cg %d ino %u\n", cg, ino);
228 return ESTALE;
229 }
230
231 int32_t initediblk = ufs_rw32(cgp->cg_initediblk, needswap);
232 brelse(bp, 0);
233
234 if (cg * fs->fs_ipg + initediblk < ino) {
235 DPRINTF("cg=%d fs->fs_ipg=%d initediblk=%d ino=%u\n",
236 cg, fs->fs_ipg, initediblk, ino);
237 return ESTALE;
238 }
239 return 0;
240 }
241
242 static int
243 ffs_snapshot_cb(kauth_cred_t cred, kauth_action_t action, void *cookie,
244 void *arg0, void *arg1, void *arg2, void *arg3)
245 {
246 vnode_t *vp = arg2;
247 int result = KAUTH_RESULT_DEFER;
248
249 if (action != KAUTH_SYSTEM_FS_SNAPSHOT)
250 return result;
251
252 if (VTOI(vp)->i_uid == kauth_cred_geteuid(cred))
253 result = KAUTH_RESULT_ALLOW;
254
255 return result;
256 }
257
258 static int
259 ffs_modcmd(modcmd_t cmd, void *arg)
260 {
261 int error;
262
263 #if 0
264 extern int doasyncfree;
265 #endif
266 #ifdef UFS_EXTATTR
267 extern int ufs_extattr_autocreate;
268 #endif
269 extern int ffs_log_changeopt;
270
271 switch (cmd) {
272 case MODULE_CMD_INIT:
273 error = vfs_attach(&ffs_vfsops);
274 if (error != 0)
275 break;
276
277 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
278 CTLFLAG_PERMANENT,
279 CTLTYPE_NODE, "ffs",
280 SYSCTL_DESCR("Berkeley Fast File System"),
281 NULL, 0, NULL, 0,
282 CTL_VFS, 1, CTL_EOL);
283 /*
284 * @@@ should we even bother with these first three?
285 */
286 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
287 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
288 CTLTYPE_INT, "doclusterread", NULL,
289 sysctl_notavail, 0, NULL, 0,
290 CTL_VFS, 1, FFS_CLUSTERREAD, CTL_EOL);
291 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
292 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
293 CTLTYPE_INT, "doclusterwrite", NULL,
294 sysctl_notavail, 0, NULL, 0,
295 CTL_VFS, 1, FFS_CLUSTERWRITE, CTL_EOL);
296 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
297 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
298 CTLTYPE_INT, "doreallocblks", NULL,
299 sysctl_notavail, 0, NULL, 0,
300 CTL_VFS, 1, FFS_REALLOCBLKS, CTL_EOL);
301 #if 0
302 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
303 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
304 CTLTYPE_INT, "doasyncfree",
305 SYSCTL_DESCR("Release dirty blocks asynchronously"),
306 NULL, 0, &doasyncfree, 0,
307 CTL_VFS, 1, FFS_ASYNCFREE, CTL_EOL);
308 #endif
309 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
310 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
311 CTLTYPE_INT, "log_changeopt",
312 SYSCTL_DESCR("Log changes in optimization strategy"),
313 NULL, 0, &ffs_log_changeopt, 0,
314 CTL_VFS, 1, FFS_LOG_CHANGEOPT, CTL_EOL);
315 #ifdef UFS_EXTATTR
316 sysctl_createv(&ffs_sysctl_log, 0, NULL, NULL,
317 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
318 CTLTYPE_INT, "extattr_autocreate",
319 SYSCTL_DESCR("Size of attribute for "
320 "backing file autocreation"),
321 NULL, 0, &ufs_extattr_autocreate, 0,
322 CTL_VFS, 1, FFS_EXTATTR_AUTOCREATE, CTL_EOL);
323
324 #endif /* UFS_EXTATTR */
325
326 ffs_snapshot_listener = kauth_listen_scope(KAUTH_SCOPE_SYSTEM,
327 ffs_snapshot_cb, NULL);
328 if (ffs_snapshot_listener == NULL)
329 printf("ffs_modcmd: can't listen on system scope.\n");
330
331 break;
332 case MODULE_CMD_FINI:
333 error = vfs_detach(&ffs_vfsops);
334 if (error != 0)
335 break;
336 sysctl_teardown(&ffs_sysctl_log);
337 if (ffs_snapshot_listener != NULL)
338 kauth_unlisten_scope(ffs_snapshot_listener);
339 break;
340 default:
341 error = ENOTTY;
342 break;
343 }
344
345 return (error);
346 }
347
348 pool_cache_t ffs_inode_cache;
349 pool_cache_t ffs_dinode1_cache;
350 pool_cache_t ffs_dinode2_cache;
351
352 static void ffs_oldfscompat_read(struct fs *, struct ufsmount *, daddr_t);
353 static void ffs_oldfscompat_write(struct fs *, struct ufsmount *);
354
355 /*
356 * Called by main() when ffs is going to be mounted as root.
357 */
358
359 int
360 ffs_mountroot(void)
361 {
362 struct fs *fs;
363 struct mount *mp;
364 struct lwp *l = curlwp; /* XXX */
365 struct ufsmount *ump;
366 int error;
367
368 if (device_class(root_device) != DV_DISK)
369 return (ENODEV);
370
371 if ((error = vfs_rootmountalloc(MOUNT_FFS, "root_device", &mp))) {
372 vrele(rootvp);
373 return (error);
374 }
375
376 /*
377 * We always need to be able to mount the root file system.
378 */
379 mp->mnt_flag |= MNT_FORCE;
380 if ((error = ffs_mountfs(rootvp, mp, l)) != 0) {
381 vfs_unbusy(mp, false, NULL);
382 vfs_destroy(mp);
383 return (error);
384 }
385 mp->mnt_flag &= ~MNT_FORCE;
386 mountlist_append(mp);
387 ump = VFSTOUFS(mp);
388 fs = ump->um_fs;
389 memset(fs->fs_fsmnt, 0, sizeof(fs->fs_fsmnt));
390 (void)copystr(mp->mnt_stat.f_mntonname, fs->fs_fsmnt, MNAMELEN - 1, 0);
391 (void)ffs_statvfs(mp, &mp->mnt_stat);
392 vfs_unbusy(mp, false, NULL);
393 setrootfstime((time_t)fs->fs_time);
394 return (0);
395 }
396
397 /*
398 * VFS Operations.
399 *
400 * mount system call
401 */
402 int
403 ffs_mount(struct mount *mp, const char *path, void *data, size_t *data_len)
404 {
405 struct lwp *l = curlwp;
406 struct vnode *devvp = NULL;
407 struct ufs_args *args = data;
408 struct ufsmount *ump = NULL;
409 struct fs *fs;
410 int error = 0, flags, update;
411 mode_t accessmode;
412 const struct bdevsw *bdev = NULL;
413
414 if (args == NULL) {
415 DPRINTF("NULL args");
416 return EINVAL;
417 }
418 if (*data_len < sizeof(*args)) {
419 DPRINTF("bad size args %zu != %zu", *data_len, sizeof(*args));
420 return EINVAL;
421 }
422
423 if (mp->mnt_flag & MNT_GETARGS) {
424 ump = VFSTOUFS(mp);
425 if (ump == NULL) {
426 DPRINTF("no ump");
427 return EIO;
428 }
429 args->fspec = NULL;
430 *data_len = sizeof *args;
431 return 0;
432 }
433
434 update = mp->mnt_flag & MNT_UPDATE;
435
436 /* Check arguments */
437 if (args->fspec != NULL) {
438 /*
439 * Look up the name and verify that it's sane.
440 */
441 error = namei_simple_user(args->fspec,
442 NSM_FOLLOW_NOEMULROOT, &devvp);
443 if (error != 0) {
444 DPRINTF("namei_simple_user returned %d", error);
445 return error;
446 }
447
448 if (!update) {
449 /*
450 * Be sure this is a valid block device
451 */
452 if (devvp->v_type != VBLK) {
453 DPRINTF("non block device %d", devvp->v_type);
454 error = ENOTBLK;
455 } else {
456 bdev = bdevsw_lookup_acquire(devvp->v_rdev);
457 if (bdev == NULL) {
458 DPRINTF("can't find block device 0x%jx",
459 devvp->v_rdev);
460 error = ENXIO;
461 }
462 }
463 } else {
464 /*
465 * Be sure we're still naming the same device
466 * used for our initial mount
467 */
468 ump = VFSTOUFS(mp);
469 if (devvp != ump->um_devvp) {
470 if (devvp->v_rdev != ump->um_devvp->v_rdev) {
471 DPRINTF("wrong device 0x%jx != 0x%jx",
472 (uintmax_t)devvp->v_rdev,
473 (uintmax_t)ump->um_devvp->v_rdev);
474 error = EINVAL;
475 } else {
476 vrele(devvp);
477 devvp = ump->um_devvp;
478 vref(devvp);
479 }
480 }
481 }
482 } else {
483 if (!update) {
484 /* New mounts must have a filename for the device */
485 DPRINTF("no filename for mount");
486 return EINVAL;
487 } else {
488 /* Use the extant mount */
489 ump = VFSTOUFS(mp);
490 devvp = ump->um_devvp;
491 vref(devvp);
492 }
493 }
494
495 /*
496 * If mount by non-root, then verify that user has necessary
497 * permissions on the device.
498 *
499 * Permission to update a mount is checked higher, so here we presume
500 * updating the mount is okay (for example, as far as securelevel goes)
501 * which leaves us with the normal check.
502 */
503 if (error == 0) {
504 accessmode = VREAD;
505 if (update ?
506 (mp->mnt_iflag & IMNT_WANTRDWR) != 0 :
507 (mp->mnt_flag & MNT_RDONLY) == 0)
508 accessmode |= VWRITE;
509 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
510 error = kauth_authorize_system(l->l_cred, KAUTH_SYSTEM_MOUNT,
511 KAUTH_REQ_SYSTEM_MOUNT_DEVICE, mp, devvp,
512 KAUTH_ARG(accessmode));
513 if (error) {
514 DPRINTF("kauth returned %d", error);
515 }
516 VOP_UNLOCK(devvp);
517 }
518
519 if (error)
520 goto fail;
521
522 #ifdef WAPBL
523 /* WAPBL can only be enabled on a r/w mount. */
524 if ((mp->mnt_flag & MNT_RDONLY) && !(mp->mnt_iflag & IMNT_WANTRDWR)) {
525 mp->mnt_flag &= ~MNT_LOG;
526 }
527 #else /* !WAPBL */
528 mp->mnt_flag &= ~MNT_LOG;
529 #endif /* !WAPBL */
530
531 if (!update) {
532 int xflags;
533
534 if (mp->mnt_flag & MNT_RDONLY)
535 xflags = FREAD;
536 else
537 xflags = FREAD | FWRITE;
538 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
539 error = VOP_OPEN(devvp, xflags, FSCRED);
540 VOP_UNLOCK(devvp);
541 if (error) {
542 DPRINTF("VOP_OPEN returned %d", error);
543 goto fail;
544 }
545 error = ffs_mountfs(devvp, mp, l);
546 if (error) {
547 DPRINTF("ffs_mountfs returned %d", error);
548 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
549 (void)VOP_CLOSE(devvp, xflags, NOCRED);
550 VOP_UNLOCK(devvp);
551 goto fail;
552 }
553
554 ump = VFSTOUFS(mp);
555 fs = ump->um_fs;
556 } else {
557 /*
558 * Update the mount.
559 */
560
561 /*
562 * The initial mount got a reference on this
563 * device, so drop the one obtained via
564 * namei(), above.
565 */
566 vrele(devvp);
567
568 ump = VFSTOUFS(mp);
569 fs = ump->um_fs;
570 if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
571 /*
572 * Changing from r/w to r/o
573 */
574 flags = WRITECLOSE;
575 if (mp->mnt_flag & MNT_FORCE)
576 flags |= FORCECLOSE;
577 error = ffs_flushfiles(mp, flags, l);
578 if (error == 0)
579 error = UFS_WAPBL_BEGIN(mp);
580 if (error == 0 &&
581 ffs_cgupdate(ump, MNT_WAIT) == 0 &&
582 fs->fs_clean & FS_WASCLEAN) {
583 if (mp->mnt_flag & MNT_SOFTDEP)
584 fs->fs_flags &= ~FS_DOSOFTDEP;
585 fs->fs_clean = FS_ISCLEAN;
586 (void) ffs_sbupdate(ump, MNT_WAIT);
587 }
588 if (error) {
589 DPRINTF("wapbl %d", error);
590 return error;
591 }
592 UFS_WAPBL_END(mp);
593 }
594
595 #ifdef WAPBL
596 if ((mp->mnt_flag & MNT_LOG) == 0) {
597 error = ffs_wapbl_stop(mp, mp->mnt_flag & MNT_FORCE);
598 if (error) {
599 DPRINTF("ffs_wapbl_stop returned %d", error);
600 return error;
601 }
602 }
603 #endif /* WAPBL */
604
605 if (fs->fs_ronly == 0 && (mp->mnt_flag & MNT_RDONLY)) {
606 /*
607 * Finish change from r/w to r/o
608 */
609 fs->fs_ronly = 1;
610 fs->fs_fmod = 0;
611 }
612
613 if (mp->mnt_flag & MNT_RELOAD) {
614 error = ffs_reload(mp, l->l_cred, l);
615 if (error) {
616 DPRINTF("ffs_reload returned %d", error);
617 return error;
618 }
619 }
620
621 if (fs->fs_ronly && (mp->mnt_iflag & IMNT_WANTRDWR)) {
622 /*
623 * Changing from read-only to read/write
624 */
625 #ifndef QUOTA2
626 if (fs->fs_flags & FS_DOQUOTA2) {
627 ump->um_flags |= UFS_QUOTA2;
628 uprintf("%s: options QUOTA2 not enabled%s\n",
629 mp->mnt_stat.f_mntonname,
630 (mp->mnt_flag & MNT_FORCE) ? "" :
631 ", not mounting");
632 DPRINTF("ffs_quota2 %d", EINVAL);
633 return EINVAL;
634 }
635 #endif
636 fs->fs_ronly = 0;
637 fs->fs_clean <<= 1;
638 fs->fs_fmod = 1;
639 #ifdef WAPBL
640 if (fs->fs_flags & FS_DOWAPBL) {
641 const char *nm = mp->mnt_stat.f_mntonname;
642 if (!mp->mnt_wapbl_replay) {
643 printf("%s: log corrupted;"
644 " replay cancelled\n", nm);
645 return EFTYPE;
646 }
647 printf("%s: replaying log to disk\n", nm);
648 error = wapbl_replay_write(mp->mnt_wapbl_replay,
649 devvp);
650 if (error) {
651 DPRINTF("%s: wapbl_replay_write %d",
652 nm, error);
653 return error;
654 }
655 wapbl_replay_stop(mp->mnt_wapbl_replay);
656 fs->fs_clean = FS_WASCLEAN;
657 }
658 #endif /* WAPBL */
659 if (fs->fs_snapinum[0] != 0)
660 ffs_snapshot_mount(mp);
661 }
662
663 #ifdef WAPBL
664 error = ffs_wapbl_start(mp);
665 if (error) {
666 DPRINTF("ffs_wapbl_start returned %d", error);
667 return error;
668 }
669 #endif /* WAPBL */
670
671 #ifdef QUOTA2
672 if (!fs->fs_ronly) {
673 error = ffs_quota2_mount(mp);
674 if (error) {
675 DPRINTF("ffs_quota2_mount returned %d", error);
676 return error;
677 }
678 }
679 #endif
680
681 if ((mp->mnt_flag & MNT_DISCARD) && !(ump->um_discarddata))
682 ump->um_discarddata = ffs_discard_init(devvp, fs);
683
684 if (args->fspec == NULL)
685 return 0;
686 }
687
688 error = set_statvfs_info(path, UIO_USERSPACE, args->fspec,
689 UIO_USERSPACE, mp->mnt_op->vfs_name, mp, l);
690 if (error == 0)
691 (void)strncpy(fs->fs_fsmnt, mp->mnt_stat.f_mntonname,
692 sizeof(fs->fs_fsmnt));
693 else {
694 DPRINTF("set_statvfs_info returned %d", error);
695 }
696 fs->fs_flags &= ~FS_DOSOFTDEP;
697 if (fs->fs_fmod != 0) { /* XXX */
698 int err;
699
700 fs->fs_fmod = 0;
701 if (fs->fs_clean & FS_WASCLEAN)
702 fs->fs_time = time_second;
703 else {
704 printf("%s: file system not clean (fs_clean=%#x); "
705 "please fsck(8)\n", mp->mnt_stat.f_mntfromname,
706 fs->fs_clean);
707 printf("%s: lost blocks %" PRId64 " files %d\n",
708 mp->mnt_stat.f_mntfromname, fs->fs_pendingblocks,
709 fs->fs_pendinginodes);
710 }
711 err = UFS_WAPBL_BEGIN(mp);
712 if (err == 0) {
713 (void) ffs_cgupdate(ump, MNT_WAIT);
714 UFS_WAPBL_END(mp);
715 }
716 }
717 if ((mp->mnt_flag & MNT_SOFTDEP) != 0) {
718 printf("%s: `-o softdep' is no longer supported, "
719 "consider `-o log'\n", mp->mnt_stat.f_mntfromname);
720 mp->mnt_flag &= ~MNT_SOFTDEP;
721 }
722
723 if (bdev != NULL)
724 bdevsw_release(bdev);
725 return (error);
726
727 fail:
728 if (bdev != NULL)
729 bdevsw_release(bdev);
730 vrele(devvp);
731 return (error);
732 }
733
734 /*
735 * Reload all incore data for a filesystem (used after running fsck on
736 * the root filesystem and finding things to fix). The filesystem must
737 * be mounted read-only.
738 *
739 * Things to do to update the mount:
740 * 1) invalidate all cached meta-data.
741 * 2) re-read superblock from disk.
742 * 3) re-read summary information from disk.
743 * 4) invalidate all inactive vnodes.
744 * 5) invalidate all cached file data.
745 * 6) re-read inode data for all active vnodes.
746 */
747 int
748 ffs_reload(struct mount *mp, kauth_cred_t cred, struct lwp *l)
749 {
750 struct vnode *vp, *devvp;
751 struct inode *ip;
752 void *space;
753 struct buf *bp;
754 struct fs *fs, *newfs;
755 int i, bsize, blks, error;
756 int32_t *lp, fs_sbsize;
757 struct ufsmount *ump;
758 daddr_t sblockloc;
759 struct vnode_iterator *marker;
760
761 if ((mp->mnt_flag & MNT_RDONLY) == 0)
762 return (EINVAL);
763
764 ump = VFSTOUFS(mp);
765
766 /*
767 * Step 1: invalidate all cached meta-data.
768 */
769 devvp = ump->um_devvp;
770 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
771 error = vinvalbuf(devvp, 0, cred, l, 0, 0);
772 VOP_UNLOCK(devvp);
773 if (error)
774 panic("%s: dirty1", __func__);
775
776 /*
777 * Step 2: re-read superblock from disk. XXX: We don't handle
778 * possibility that superblock moved. Which implies that we don't
779 * want its size to change either.
780 */
781 fs = ump->um_fs;
782 fs_sbsize = fs->fs_sbsize;
783 error = bread(devvp, fs->fs_sblockloc / DEV_BSIZE, fs_sbsize,
784 0, &bp);
785 if (error)
786 return (error);
787 newfs = kmem_alloc(fs_sbsize, KM_SLEEP);
788 memcpy(newfs, bp->b_data, fs_sbsize);
789
790 #ifdef FFS_EI
791 if (ump->um_flags & UFS_NEEDSWAP) {
792 ffs_sb_swap((struct fs *)bp->b_data, newfs);
793 newfs->fs_flags |= FS_SWAPPED;
794 } else
795 #endif
796 newfs->fs_flags &= ~FS_SWAPPED;
797
798 brelse(bp, 0);
799
800 if ((newfs->fs_magic != FS_UFS1_MAGIC) &&
801 (newfs->fs_magic != FS_UFS2_MAGIC)) {
802 kmem_free(newfs, fs_sbsize);
803 return (EIO); /* XXX needs translation */
804 }
805 if (!ffs_superblock_validate(newfs)) {
806 kmem_free(newfs, fs_sbsize);
807 return (EINVAL);
808 }
809
810 /*
811 * The current implementation doesn't handle the possibility that
812 * these values may have changed.
813 */
814 if ((newfs->fs_sbsize != fs_sbsize) ||
815 (newfs->fs_cssize != fs->fs_cssize) ||
816 (newfs->fs_contigsumsize != fs->fs_contigsumsize) ||
817 (newfs->fs_ncg != fs->fs_ncg)) {
818 kmem_free(newfs, fs_sbsize);
819 return (EINVAL);
820 }
821
822 /* Store off old fs_sblockloc for fs_oldfscompat_read. */
823 sblockloc = fs->fs_sblockloc;
824 /*
825 * Copy pointer fields back into superblock before copying in XXX
826 * new superblock. These should really be in the ufsmount. XXX
827 * Note that important parameters (eg fs_ncg) are unchanged.
828 */
829 newfs->fs_csp = fs->fs_csp;
830 newfs->fs_maxcluster = fs->fs_maxcluster;
831 newfs->fs_contigdirs = fs->fs_contigdirs;
832 newfs->fs_ronly = fs->fs_ronly;
833 newfs->fs_active = fs->fs_active;
834 memcpy(fs, newfs, (u_int)fs_sbsize);
835 kmem_free(newfs, fs_sbsize);
836
837 /*
838 * Recheck for Apple UFS filesystem.
839 */
840 ump->um_flags &= ~UFS_ISAPPLEUFS;
841 if (ffs_is_appleufs(devvp, fs)) {
842 #ifdef APPLE_UFS
843 ump->um_flags |= UFS_ISAPPLEUFS;
844 #else
845 DPRINTF("AppleUFS not supported");
846 return (EIO); /* XXX: really? */
847 #endif
848 }
849
850 if (UFS_MPISAPPLEUFS(ump)) {
851 /* see comment about NeXT below */
852 ump->um_maxsymlinklen = APPLEUFS_MAXSYMLINKLEN;
853 ump->um_dirblksiz = APPLEUFS_DIRBLKSIZ;
854 mp->mnt_iflag |= IMNT_DTYPE;
855 } else {
856 ump->um_maxsymlinklen = fs->fs_maxsymlinklen;
857 ump->um_dirblksiz = UFS_DIRBLKSIZ;
858 if (ump->um_maxsymlinklen > 0)
859 mp->mnt_iflag |= IMNT_DTYPE;
860 else
861 mp->mnt_iflag &= ~IMNT_DTYPE;
862 }
863 ffs_oldfscompat_read(fs, ump, sblockloc);
864
865 mutex_enter(&ump->um_lock);
866 ump->um_maxfilesize = fs->fs_maxfilesize;
867 if (fs->fs_flags & ~(FS_KNOWN_FLAGS | FS_INTERNAL)) {
868 uprintf("%s: unknown ufs flags: 0x%08"PRIx32"%s\n",
869 mp->mnt_stat.f_mntonname, fs->fs_flags,
870 (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting");
871 if ((mp->mnt_flag & MNT_FORCE) == 0) {
872 mutex_exit(&ump->um_lock);
873 return (EINVAL);
874 }
875 }
876 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) {
877 fs->fs_pendingblocks = 0;
878 fs->fs_pendinginodes = 0;
879 }
880 mutex_exit(&ump->um_lock);
881
882 ffs_statvfs(mp, &mp->mnt_stat);
883 /*
884 * Step 3: re-read summary information from disk.
885 */
886 blks = howmany(fs->fs_cssize, fs->fs_fsize);
887 space = fs->fs_csp;
888 for (i = 0; i < blks; i += fs->fs_frag) {
889 bsize = fs->fs_bsize;
890 if (i + fs->fs_frag > blks)
891 bsize = (blks - i) * fs->fs_fsize;
892 error = bread(devvp, FFS_FSBTODB(fs, fs->fs_csaddr + i), bsize,
893 0, &bp);
894 if (error) {
895 return (error);
896 }
897 #ifdef FFS_EI
898 if (UFS_FSNEEDSWAP(fs))
899 ffs_csum_swap((struct csum *)bp->b_data,
900 (struct csum *)space, bsize);
901 else
902 #endif
903 memcpy(space, bp->b_data, (size_t)bsize);
904 space = (char *)space + bsize;
905 brelse(bp, 0);
906 }
907 /*
908 * We no longer know anything about clusters per cylinder group.
909 */
910 if (fs->fs_contigsumsize > 0) {
911 lp = fs->fs_maxcluster;
912 for (i = 0; i < fs->fs_ncg; i++)
913 *lp++ = fs->fs_contigsumsize;
914 }
915
916 vfs_vnode_iterator_init(mp, &marker);
917 while ((vp = vfs_vnode_iterator_next(marker, NULL, NULL))) {
918 /*
919 * Step 4: invalidate all inactive vnodes.
920 */
921 if (vrecycle(vp))
922 continue;
923 /*
924 * Step 5: invalidate all cached file data.
925 */
926 if (vn_lock(vp, LK_EXCLUSIVE)) {
927 vrele(vp);
928 continue;
929 }
930 if (vinvalbuf(vp, 0, cred, l, 0, 0))
931 panic("%s: dirty2", __func__);
932 /*
933 * Step 6: re-read inode data for all active vnodes.
934 */
935 ip = VTOI(vp);
936 error = bread(devvp, FFS_FSBTODB(fs, ino_to_fsba(fs, ip->i_number)),
937 (int)fs->fs_bsize, 0, &bp);
938 if (error) {
939 vput(vp);
940 break;
941 }
942 ffs_load_inode(bp, ip, fs, ip->i_number);
943 brelse(bp, 0);
944 vput(vp);
945 }
946 vfs_vnode_iterator_destroy(marker);
947 return (error);
948 }
949
950 /*
951 * Possible superblock locations ordered from most to least likely.
952 */
953 static const int sblock_try[] = SBLOCKSEARCH;
954
955
956 static int
957 ffs_superblock_validate(struct fs *fs)
958 {
959 int32_t i, fs_bshift = 0, fs_fshift = 0, fs_fragshift = 0, fs_frag;
960 int32_t fs_inopb;
961
962 /* Check the superblock size */
963 if (fs->fs_sbsize > SBLOCKSIZE || fs->fs_sbsize < sizeof(struct fs))
964 return 0;
965
966 /* Check the file system blocksize */
967 if (fs->fs_bsize > MAXBSIZE || fs->fs_bsize < MINBSIZE)
968 return 0;
969 if (!powerof2(fs->fs_bsize))
970 return 0;
971
972 /* Check the size of frag blocks */
973 if (!powerof2(fs->fs_fsize))
974 return 0;
975 if (fs->fs_fsize == 0)
976 return 0;
977
978 /*
979 * XXX: these values are just zero-checked to prevent obvious
980 * bugs. We need more strict checks.
981 */
982 if (fs->fs_size == 0)
983 return 0;
984 if (fs->fs_cssize == 0)
985 return 0;
986 if (fs->fs_ipg == 0)
987 return 0;
988 if (fs->fs_fpg == 0)
989 return 0;
990 if (fs->fs_ncg == 0)
991 return 0;
992 if (fs->fs_maxbpg == 0)
993 return 0;
994
995 /* Check the number of inodes per block */
996 if (fs->fs_magic == FS_UFS1_MAGIC)
997 fs_inopb = fs->fs_bsize / sizeof(struct ufs1_dinode);
998 else /* fs->fs_magic == FS_UFS2_MAGIC */
999 fs_inopb = fs->fs_bsize / sizeof(struct ufs2_dinode);
1000 if (fs->fs_inopb != fs_inopb)
1001 return 0;
1002
1003 /* Block size cannot be smaller than fragment size */
1004 if (fs->fs_bsize < fs->fs_fsize)
1005 return 0;
1006
1007 /* Compute fs_bshift and ensure it is consistent */
1008 for (i = fs->fs_bsize; i > 1; i >>= 1)
1009 fs_bshift++;
1010 if (fs->fs_bshift != fs_bshift)
1011 return 0;
1012
1013 /* Compute fs_fshift and ensure it is consistent */
1014 for (i = fs->fs_fsize; i > 1; i >>= 1)
1015 fs_fshift++;
1016 if (fs->fs_fshift != fs_fshift)
1017 return 0;
1018
1019 /* Compute fs_fragshift and ensure it is consistent */
1020 for (i = fs->fs_frag; i > 1; i >>= 1)
1021 fs_fragshift++;
1022 if (fs->fs_fragshift != fs_fragshift)
1023 return 0;
1024
1025 /* Check the masks */
1026 if (fs->fs_bmask != ~(fs->fs_bsize - 1))
1027 return 0;
1028 if (fs->fs_fmask != ~(fs->fs_fsize - 1))
1029 return 0;
1030
1031 /*
1032 * Now that the shifts and masks are sanitized, we can use the ffs_ API.
1033 */
1034
1035 /* Check the number of frag blocks */
1036 if ((fs_frag = ffs_numfrags(fs, fs->fs_bsize)) > MAXFRAG)
1037 return 0;
1038 if (fs->fs_frag != fs_frag)
1039 return 0;
1040
1041 /* Check the size of cylinder groups */
1042 if ((fs->fs_cgsize < sizeof(struct cg)) ||
1043 (fs->fs_cgsize > fs->fs_bsize))
1044 return 0;
1045
1046 return 1;
1047 }
1048
1049 static int
1050 ffs_is_appleufs(struct vnode *devvp, struct fs *fs)
1051 {
1052 struct dkwedge_info dkw;
1053 int ret = 0;
1054
1055 /*
1056 * First check to see if this is tagged as an Apple UFS filesystem
1057 * in the disklabel.
1058 */
1059 if (getdiskinfo(devvp, &dkw) == 0 &&
1060 strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0)
1061 ret = 1;
1062 #ifdef APPLE_UFS
1063 else {
1064 struct appleufslabel *applefs;
1065 struct buf *bp;
1066 daddr_t blkno = APPLEUFS_LABEL_OFFSET / DEV_BSIZE;
1067 int error;
1068
1069 /*
1070 * Manually look for an Apple UFS label, and if a valid one
1071 * is found, then treat it like an Apple UFS filesystem anyway.
1072 */
1073 error = bread(devvp, blkno, APPLEUFS_LABEL_SIZE, 0, &bp);
1074 if (error) {
1075 DPRINTF("bread@0x%jx returned %d", (intmax_t)blkno, error);
1076 return 0;
1077 }
1078 applefs = (struct appleufslabel *)bp->b_data;
1079 error = ffs_appleufs_validate(fs->fs_fsmnt, applefs, NULL);
1080 if (error == 0)
1081 ret = 1;
1082 brelse(bp, 0);
1083 }
1084 #endif
1085
1086 return ret;
1087 }
1088
1089 /*
1090 * Common code for mount and mountroot
1091 */
1092 int
1093 ffs_mountfs(struct vnode *devvp, struct mount *mp, struct lwp *l)
1094 {
1095 struct ufsmount *ump = NULL;
1096 struct buf *bp = NULL;
1097 struct fs *fs = NULL;
1098 dev_t dev;
1099 void *space;
1100 daddr_t sblockloc = 0;
1101 int blks, fstype = 0;
1102 int error, i, bsize, ronly, bset = 0;
1103 #ifdef FFS_EI
1104 int needswap = 0; /* keep gcc happy */
1105 #endif
1106 int32_t *lp;
1107 kauth_cred_t cred;
1108 u_int32_t allocsbsize, fs_sbsize = 0;
1109
1110 dev = devvp->v_rdev;
1111 cred = l ? l->l_cred : NOCRED;
1112
1113 /* Flush out any old buffers remaining from a previous use. */
1114 vn_lock(devvp, LK_EXCLUSIVE | LK_RETRY);
1115 error = vinvalbuf(devvp, V_SAVE, cred, l, 0, 0);
1116 VOP_UNLOCK(devvp);
1117 if (error) {
1118 DPRINTF("vinvalbuf returned %d", error);
1119 return error;
1120 }
1121
1122 ronly = (mp->mnt_flag & MNT_RDONLY) != 0;
1123
1124 error = fstrans_mount(mp);
1125 if (error) {
1126 DPRINTF("fstrans_mount returned %d", error);
1127 return error;
1128 }
1129
1130 ump = kmem_zalloc(sizeof(*ump), KM_SLEEP);
1131 mutex_init(&ump->um_lock, MUTEX_DEFAULT, IPL_NONE);
1132 error = ffs_snapshot_init(ump);
1133 if (error) {
1134 DPRINTF("ffs_snapshot_init returned %d", error);
1135 goto out;
1136 }
1137 ump->um_ops = &ffs_ufsops;
1138
1139 #ifdef WAPBL
1140 sbagain:
1141 #endif
1142 /*
1143 * Try reading the superblock in each of its possible locations.
1144 */
1145 for (i = 0; ; i++) {
1146 daddr_t fs_sblockloc;
1147
1148 if (bp != NULL) {
1149 brelse(bp, BC_NOCACHE);
1150 bp = NULL;
1151 }
1152 if (sblock_try[i] == -1) {
1153 DPRINTF("no superblock found");
1154 error = EINVAL;
1155 fs = NULL;
1156 goto out;
1157 }
1158
1159 error = bread(devvp, sblock_try[i] / DEV_BSIZE, SBLOCKSIZE,
1160 0, &bp);
1161 if (error) {
1162 DPRINTF("bread@0x%x returned %d",
1163 sblock_try[i] / DEV_BSIZE, error);
1164 fs = NULL;
1165 goto out;
1166 }
1167 fs = (struct fs *)bp->b_data;
1168
1169 sblockloc = sblock_try[i];
1170 DPRINTF("fs_magic 0x%x", fs->fs_magic);
1171
1172 /*
1173 * Swap: here, we swap fs->fs_sbsize in order to get the correct
1174 * size to read the superblock. Once read, we swap the whole
1175 * superblock structure.
1176 */
1177 if (fs->fs_magic == FS_UFS1_MAGIC) {
1178 fs_sbsize = fs->fs_sbsize;
1179 fstype = UFS1;
1180 #ifdef FFS_EI
1181 needswap = 0;
1182 } else if (fs->fs_magic == FS_UFS1_MAGIC_SWAPPED) {
1183 fs_sbsize = bswap32(fs->fs_sbsize);
1184 fstype = UFS1;
1185 needswap = 1;
1186 #endif
1187 } else if (fs->fs_magic == FS_UFS2_MAGIC) {
1188 fs_sbsize = fs->fs_sbsize;
1189 fstype = UFS2;
1190 #ifdef FFS_EI
1191 needswap = 0;
1192 } else if (fs->fs_magic == FS_UFS2_MAGIC_SWAPPED) {
1193 fs_sbsize = bswap32(fs->fs_sbsize);
1194 fstype = UFS2;
1195 needswap = 1;
1196 #endif
1197 } else
1198 continue;
1199
1200 /* fs->fs_sblockloc isn't defined for old filesystems */
1201 if (fstype == UFS1 && !(fs->fs_old_flags & FS_FLAGS_UPDATED)) {
1202 if (sblockloc == SBLOCK_UFS2)
1203 /*
1204 * This is likely to be the first alternate
1205 * in a filesystem with 64k blocks.
1206 * Don't use it.
1207 */
1208 continue;
1209 fs_sblockloc = sblockloc;
1210 } else {
1211 fs_sblockloc = fs->fs_sblockloc;
1212 #ifdef FFS_EI
1213 if (needswap)
1214 fs_sblockloc = bswap64(fs_sblockloc);
1215 #endif
1216 }
1217
1218 /* Check we haven't found an alternate superblock */
1219 if (fs_sblockloc != sblockloc)
1220 continue;
1221
1222 /* Check the superblock size */
1223 if (fs_sbsize > SBLOCKSIZE || fs_sbsize < sizeof(struct fs))
1224 continue;
1225 fs = kmem_alloc((u_long)fs_sbsize, KM_SLEEP);
1226 memcpy(fs, bp->b_data, fs_sbsize);
1227
1228 /* Swap the whole superblock structure, if necessary. */
1229 #ifdef FFS_EI
1230 if (needswap) {
1231 ffs_sb_swap((struct fs*)bp->b_data, fs);
1232 fs->fs_flags |= FS_SWAPPED;
1233 } else
1234 #endif
1235 fs->fs_flags &= ~FS_SWAPPED;
1236
1237 /*
1238 * Now that everything is swapped, the superblock is ready to
1239 * be sanitized.
1240 */
1241 if (!ffs_superblock_validate(fs)) {
1242 kmem_free(fs, fs_sbsize);
1243 continue;
1244 }
1245
1246 /* Ok seems to be a good superblock */
1247 break;
1248 }
1249
1250 ump->um_fs = fs;
1251
1252 #ifdef WAPBL
1253 if ((mp->mnt_wapbl_replay == 0) && (fs->fs_flags & FS_DOWAPBL)) {
1254 error = ffs_wapbl_replay_start(mp, fs, devvp);
1255 if (error && (mp->mnt_flag & MNT_FORCE) == 0) {
1256 DPRINTF("ffs_wapbl_replay_start returned %d", error);
1257 goto out;
1258 }
1259 if (!error) {
1260 if (!ronly) {
1261 /* XXX fsmnt may be stale. */
1262 printf("%s: replaying log to disk\n",
1263 fs->fs_fsmnt);
1264 error = wapbl_replay_write(mp->mnt_wapbl_replay,
1265 devvp);
1266 if (error) {
1267 DPRINTF("wapbl_replay_write returned %d",
1268 error);
1269 goto out;
1270 }
1271 wapbl_replay_stop(mp->mnt_wapbl_replay);
1272 fs->fs_clean = FS_WASCLEAN;
1273 } else {
1274 /* XXX fsmnt may be stale */
1275 printf("%s: replaying log to memory\n",
1276 fs->fs_fsmnt);
1277 }
1278
1279 /* Force a re-read of the superblock */
1280 brelse(bp, BC_INVAL);
1281 bp = NULL;
1282 kmem_free(fs, fs_sbsize);
1283 fs = NULL;
1284 goto sbagain;
1285 }
1286 }
1287 #else /* !WAPBL */
1288 if ((fs->fs_flags & FS_DOWAPBL) && (mp->mnt_flag & MNT_FORCE) == 0) {
1289 error = EPERM;
1290 DPRINTF("no force %d", error);
1291 goto out;
1292 }
1293 #endif /* !WAPBL */
1294
1295 ffs_oldfscompat_read(fs, ump, sblockloc);
1296 ump->um_maxfilesize = fs->fs_maxfilesize;
1297
1298 if (fs->fs_flags & ~(FS_KNOWN_FLAGS | FS_INTERNAL)) {
1299 uprintf("%s: unknown ufs flags: 0x%08"PRIx32"%s\n",
1300 mp->mnt_stat.f_mntonname, fs->fs_flags,
1301 (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting");
1302 if ((mp->mnt_flag & MNT_FORCE) == 0) {
1303 error = EINVAL;
1304 DPRINTF("no force %d", error);
1305 goto out;
1306 }
1307 }
1308
1309 if (fs->fs_pendingblocks != 0 || fs->fs_pendinginodes != 0) {
1310 fs->fs_pendingblocks = 0;
1311 fs->fs_pendinginodes = 0;
1312 }
1313
1314 ump->um_fstype = fstype;
1315 if (fs->fs_sbsize < SBLOCKSIZE)
1316 brelse(bp, BC_INVAL);
1317 else
1318 brelse(bp, 0);
1319 bp = NULL;
1320
1321 if (ffs_is_appleufs(devvp, fs)) {
1322 #ifdef APPLE_UFS
1323 ump->um_flags |= UFS_ISAPPLEUFS;
1324 #else
1325 DPRINTF("AppleUFS not supported");
1326 error = EINVAL;
1327 goto out;
1328 #endif
1329 }
1330
1331 #if 0
1332 /*
1333 * XXX This code changes the behaviour of mounting dirty filesystems, to
1334 * XXX require "mount -f ..." to mount them. This doesn't match what
1335 * XXX mount(8) describes and is disabled for now.
1336 */
1337 /*
1338 * If the file system is not clean, don't allow it to be mounted
1339 * unless MNT_FORCE is specified. (Note: MNT_FORCE is always set
1340 * for the root file system.)
1341 */
1342 if (fs->fs_flags & FS_DOWAPBL) {
1343 /*
1344 * wapbl normally expects to be FS_WASCLEAN when the FS_DOWAPBL
1345 * bit is set, although there's a window in unmount where it
1346 * could be FS_ISCLEAN
1347 */
1348 if ((mp->mnt_flag & MNT_FORCE) == 0 &&
1349 (fs->fs_clean & (FS_WASCLEAN | FS_ISCLEAN)) == 0) {
1350 error = EPERM;
1351 goto out;
1352 }
1353 } else
1354 if ((fs->fs_clean & FS_ISCLEAN) == 0 &&
1355 (mp->mnt_flag & MNT_FORCE) == 0) {
1356 error = EPERM;
1357 goto out;
1358 }
1359 #endif
1360
1361 /*
1362 * Verify that we can access the last block in the fs
1363 * if we're mounting read/write.
1364 */
1365 if (!ronly) {
1366 error = bread(devvp, FFS_FSBTODB(fs, fs->fs_size - 1),
1367 fs->fs_fsize, 0, &bp);
1368 if (error) {
1369 DPRINTF("bread@0x%jx returned %d",
1370 (intmax_t)FFS_FSBTODB(fs, fs->fs_size - 1),
1371 error);
1372 bset = BC_INVAL;
1373 goto out;
1374 }
1375 if (bp->b_bcount != fs->fs_fsize) {
1376 DPRINTF("bcount %x != fsize %x", bp->b_bcount,
1377 fs->fs_fsize);
1378 error = EINVAL;
1379 bset = BC_INVAL;
1380 goto out;
1381 }
1382 brelse(bp, BC_INVAL);
1383 bp = NULL;
1384 }
1385
1386 fs->fs_ronly = ronly;
1387 /* Don't bump fs_clean if we're replaying journal */
1388 if (!((fs->fs_flags & FS_DOWAPBL) && (fs->fs_clean & FS_WASCLEAN))) {
1389 if (ronly == 0) {
1390 fs->fs_clean <<= 1;
1391 fs->fs_fmod = 1;
1392 }
1393 }
1394
1395 bsize = fs->fs_cssize;
1396 blks = howmany(bsize, fs->fs_fsize);
1397 if (fs->fs_contigsumsize > 0)
1398 bsize += fs->fs_ncg * sizeof(int32_t);
1399 bsize += fs->fs_ncg * sizeof(*fs->fs_contigdirs);
1400 allocsbsize = bsize;
1401 space = kmem_alloc((u_long)allocsbsize, KM_SLEEP);
1402 fs->fs_csp = space;
1403
1404 for (i = 0; i < blks; i += fs->fs_frag) {
1405 bsize = fs->fs_bsize;
1406 if (i + fs->fs_frag > blks)
1407 bsize = (blks - i) * fs->fs_fsize;
1408 error = bread(devvp, FFS_FSBTODB(fs, fs->fs_csaddr + i), bsize,
1409 0, &bp);
1410 if (error) {
1411 DPRINTF("bread@0x%jx %d",
1412 (intmax_t)FFS_FSBTODB(fs, fs->fs_csaddr + i),
1413 error);
1414 goto out1;
1415 }
1416 #ifdef FFS_EI
1417 if (needswap)
1418 ffs_csum_swap((struct csum *)bp->b_data,
1419 (struct csum *)space, bsize);
1420 else
1421 #endif
1422 memcpy(space, bp->b_data, (u_int)bsize);
1423
1424 space = (char *)space + bsize;
1425 brelse(bp, 0);
1426 bp = NULL;
1427 }
1428 if (fs->fs_contigsumsize > 0) {
1429 fs->fs_maxcluster = lp = space;
1430 for (i = 0; i < fs->fs_ncg; i++)
1431 *lp++ = fs->fs_contigsumsize;
1432 space = lp;
1433 }
1434 bsize = fs->fs_ncg * sizeof(*fs->fs_contigdirs);
1435 fs->fs_contigdirs = space;
1436 space = (char *)space + bsize;
1437 memset(fs->fs_contigdirs, 0, bsize);
1438
1439 /* Compatibility for old filesystems - XXX */
1440 if (fs->fs_avgfilesize <= 0)
1441 fs->fs_avgfilesize = AVFILESIZ;
1442 if (fs->fs_avgfpdir <= 0)
1443 fs->fs_avgfpdir = AFPDIR;
1444 fs->fs_active = NULL;
1445
1446 mp->mnt_data = ump;
1447 mp->mnt_stat.f_fsidx.__fsid_val[0] = (long)dev;
1448 mp->mnt_stat.f_fsidx.__fsid_val[1] = makefstype(MOUNT_FFS);
1449 mp->mnt_stat.f_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0];
1450 mp->mnt_stat.f_namemax = FFS_MAXNAMLEN;
1451 if (UFS_MPISAPPLEUFS(ump)) {
1452 /* NeXT used to keep short symlinks in the inode even
1453 * when using FS_42INODEFMT. In that case fs->fs_maxsymlinklen
1454 * is probably -1, but we still need to be able to identify
1455 * short symlinks.
1456 */
1457 ump->um_maxsymlinklen = APPLEUFS_MAXSYMLINKLEN;
1458 ump->um_dirblksiz = APPLEUFS_DIRBLKSIZ;
1459 mp->mnt_iflag |= IMNT_DTYPE;
1460 } else {
1461 ump->um_maxsymlinklen = fs->fs_maxsymlinklen;
1462 ump->um_dirblksiz = UFS_DIRBLKSIZ;
1463 if (ump->um_maxsymlinklen > 0)
1464 mp->mnt_iflag |= IMNT_DTYPE;
1465 else
1466 mp->mnt_iflag &= ~IMNT_DTYPE;
1467 }
1468 mp->mnt_fs_bshift = fs->fs_bshift;
1469 mp->mnt_dev_bshift = DEV_BSHIFT; /* XXX */
1470 mp->mnt_flag |= MNT_LOCAL;
1471 mp->mnt_iflag |= IMNT_MPSAFE;
1472 #ifdef FFS_EI
1473 if (needswap)
1474 ump->um_flags |= UFS_NEEDSWAP;
1475 #endif
1476 ump->um_mountp = mp;
1477 ump->um_dev = dev;
1478 ump->um_devvp = devvp;
1479 ump->um_nindir = fs->fs_nindir;
1480 ump->um_lognindir = ffs(fs->fs_nindir) - 1;
1481 ump->um_bptrtodb = fs->fs_fshift - DEV_BSHIFT;
1482 ump->um_seqinc = fs->fs_frag;
1483 for (i = 0; i < MAXQUOTAS; i++)
1484 ump->um_quotas[i] = NULLVP;
1485 spec_node_setmountedfs(devvp, mp);
1486 if (ronly == 0 && fs->fs_snapinum[0] != 0)
1487 ffs_snapshot_mount(mp);
1488 #ifdef WAPBL
1489 if (!ronly) {
1490 KDASSERT(fs->fs_ronly == 0);
1491 /*
1492 * ffs_wapbl_start() needs mp->mnt_stat initialised if it
1493 * needs to create a new log file in-filesystem.
1494 */
1495 error = ffs_statvfs(mp, &mp->mnt_stat);
1496 if (error) {
1497 DPRINTF("ffs_statvfs returned %d", error);
1498 goto out1;
1499 }
1500
1501 error = ffs_wapbl_start(mp);
1502 if (error) {
1503 DPRINTF("ffs_wapbl_start returned %d", error);
1504 goto out1;
1505 }
1506 }
1507 #endif /* WAPBL */
1508 if (ronly == 0) {
1509 #ifdef QUOTA2
1510 error = ffs_quota2_mount(mp);
1511 if (error) {
1512 DPRINTF("ffs_quota2_mount returned %d", error);
1513 goto out1;
1514 }
1515 #else
1516 if (fs->fs_flags & FS_DOQUOTA2) {
1517 ump->um_flags |= UFS_QUOTA2;
1518 uprintf("%s: options QUOTA2 not enabled%s\n",
1519 mp->mnt_stat.f_mntonname,
1520 (mp->mnt_flag & MNT_FORCE) ? "" : ", not mounting");
1521 if ((mp->mnt_flag & MNT_FORCE) == 0) {
1522 error = EINVAL;
1523 DPRINTF("quota disabled %d", error);
1524 goto out1;
1525 }
1526 }
1527 #endif
1528 }
1529
1530 if (mp->mnt_flag & MNT_DISCARD)
1531 ump->um_discarddata = ffs_discard_init(devvp, fs);
1532
1533 return (0);
1534 out1:
1535 kmem_free(fs->fs_csp, allocsbsize);
1536 out:
1537 #ifdef WAPBL
1538 if (mp->mnt_wapbl_replay) {
1539 wapbl_replay_stop(mp->mnt_wapbl_replay);
1540 wapbl_replay_free(mp->mnt_wapbl_replay);
1541 mp->mnt_wapbl_replay = 0;
1542 }
1543 #endif
1544
1545 fstrans_unmount(mp);
1546 if (fs)
1547 kmem_free(fs, fs->fs_sbsize);
1548 spec_node_setmountedfs(devvp, NULL);
1549 if (bp)
1550 brelse(bp, bset);
1551 if (ump) {
1552 if (ump->um_oldfscompat)
1553 kmem_free(ump->um_oldfscompat, 512 + 3*sizeof(int32_t));
1554 mutex_destroy(&ump->um_lock);
1555 kmem_free(ump, sizeof(*ump));
1556 mp->mnt_data = NULL;
1557 }
1558 return (error);
1559 }
1560
1561 /*
1562 * Sanity checks for loading old filesystem superblocks.
1563 * See ffs_oldfscompat_write below for unwound actions.
1564 *
1565 * XXX - Parts get retired eventually.
1566 * Unfortunately new bits get added.
1567 */
1568 static void
1569 ffs_oldfscompat_read(struct fs *fs, struct ufsmount *ump, daddr_t sblockloc)
1570 {
1571 off_t maxfilesize;
1572 int32_t *extrasave;
1573
1574 if ((fs->fs_magic != FS_UFS1_MAGIC) ||
1575 (fs->fs_old_flags & FS_FLAGS_UPDATED))
1576 return;
1577
1578 if (!ump->um_oldfscompat)
1579 ump->um_oldfscompat = kmem_alloc(512 + 3*sizeof(int32_t),
1580 KM_SLEEP);
1581
1582 memcpy(ump->um_oldfscompat, &fs->fs_old_postbl_start, 512);
1583 extrasave = ump->um_oldfscompat;
1584 extrasave += 512/sizeof(int32_t);
1585 extrasave[0] = fs->fs_old_npsect;
1586 extrasave[1] = fs->fs_old_interleave;
1587 extrasave[2] = fs->fs_old_trackskew;
1588
1589 /* These fields will be overwritten by their
1590 * original values in fs_oldfscompat_write, so it is harmless
1591 * to modify them here.
1592 */
1593 fs->fs_cstotal.cs_ndir = fs->fs_old_cstotal.cs_ndir;
1594 fs->fs_cstotal.cs_nbfree = fs->fs_old_cstotal.cs_nbfree;
1595 fs->fs_cstotal.cs_nifree = fs->fs_old_cstotal.cs_nifree;
1596 fs->fs_cstotal.cs_nffree = fs->fs_old_cstotal.cs_nffree;
1597
1598 fs->fs_maxbsize = fs->fs_bsize;
1599 fs->fs_time = fs->fs_old_time;
1600 fs->fs_size = fs->fs_old_size;
1601 fs->fs_dsize = fs->fs_old_dsize;
1602 fs->fs_csaddr = fs->fs_old_csaddr;
1603 fs->fs_sblockloc = sblockloc;
1604
1605 fs->fs_flags = fs->fs_old_flags | (fs->fs_flags & FS_INTERNAL);
1606
1607 if (fs->fs_old_postblformat == FS_42POSTBLFMT) {
1608 fs->fs_old_nrpos = 8;
1609 fs->fs_old_npsect = fs->fs_old_nsect;
1610 fs->fs_old_interleave = 1;
1611 fs->fs_old_trackskew = 0;
1612 }
1613
1614 if (fs->fs_magic == FS_UFS1_MAGIC &&
1615 fs->fs_old_inodefmt < FS_44INODEFMT) {
1616 fs->fs_maxfilesize = (u_quad_t) 1LL << 39;
1617 fs->fs_qbmask = ~fs->fs_bmask;
1618 fs->fs_qfmask = ~fs->fs_fmask;
1619 }
1620
1621 maxfilesize = (u_int64_t)0x80000000 * fs->fs_bsize - 1;
1622 if (fs->fs_maxfilesize > maxfilesize)
1623 fs->fs_maxfilesize = maxfilesize;
1624
1625 /* Compatibility for old filesystems */
1626 if (fs->fs_avgfilesize <= 0)
1627 fs->fs_avgfilesize = AVFILESIZ;
1628 if (fs->fs_avgfpdir <= 0)
1629 fs->fs_avgfpdir = AFPDIR;
1630
1631 #if 0
1632 if (bigcgs) {
1633 fs->fs_save_cgsize = fs->fs_cgsize;
1634 fs->fs_cgsize = fs->fs_bsize;
1635 }
1636 #endif
1637 }
1638
1639 /*
1640 * Unwinding superblock updates for old filesystems.
1641 * See ffs_oldfscompat_read above for details.
1642 *
1643 * XXX - Parts get retired eventually.
1644 * Unfortunately new bits get added.
1645 */
1646 static void
1647 ffs_oldfscompat_write(struct fs *fs, struct ufsmount *ump)
1648 {
1649 int32_t *extrasave;
1650
1651 if ((fs->fs_magic != FS_UFS1_MAGIC) ||
1652 (fs->fs_old_flags & FS_FLAGS_UPDATED))
1653 return;
1654
1655 fs->fs_old_time = fs->fs_time;
1656 fs->fs_old_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir;
1657 fs->fs_old_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree;
1658 fs->fs_old_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree;
1659 fs->fs_old_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree;
1660 fs->fs_old_flags = fs->fs_flags;
1661
1662 #if 0
1663 if (bigcgs) {
1664 fs->fs_cgsize = fs->fs_save_cgsize;
1665 }
1666 #endif
1667
1668 memcpy(&fs->fs_old_postbl_start, ump->um_oldfscompat, 512);
1669 extrasave = ump->um_oldfscompat;
1670 extrasave += 512/sizeof(int32_t);
1671 fs->fs_old_npsect = extrasave[0];
1672 fs->fs_old_interleave = extrasave[1];
1673 fs->fs_old_trackskew = extrasave[2];
1674
1675 }
1676
1677 /*
1678 * unmount vfs operation
1679 */
1680 int
1681 ffs_unmount(struct mount *mp, int mntflags)
1682 {
1683 struct lwp *l = curlwp;
1684 struct ufsmount *ump = VFSTOUFS(mp);
1685 struct fs *fs = ump->um_fs;
1686 int error, flags;
1687 u_int32_t bsize;
1688 #ifdef WAPBL
1689 extern int doforce;
1690 #endif
1691
1692 if (ump->um_discarddata) {
1693 ffs_discard_finish(ump->um_discarddata, mntflags);
1694 ump->um_discarddata = NULL;
1695 }
1696
1697 flags = 0;
1698 if (mntflags & MNT_FORCE)
1699 flags |= FORCECLOSE;
1700 if ((error = ffs_flushfiles(mp, flags, l)) != 0)
1701 return (error);
1702 error = UFS_WAPBL_BEGIN(mp);
1703 if (error == 0)
1704 if (fs->fs_ronly == 0 &&
1705 ffs_cgupdate(ump, MNT_WAIT) == 0 &&
1706 fs->fs_clean & FS_WASCLEAN) {
1707 fs->fs_clean = FS_ISCLEAN;
1708 fs->fs_fmod = 0;
1709 (void) ffs_sbupdate(ump, MNT_WAIT);
1710 }
1711 if (error == 0)
1712 UFS_WAPBL_END(mp);
1713 #ifdef WAPBL
1714 KASSERT(!(mp->mnt_wapbl_replay && mp->mnt_wapbl));
1715 if (mp->mnt_wapbl_replay) {
1716 KDASSERT(fs->fs_ronly);
1717 wapbl_replay_stop(mp->mnt_wapbl_replay);
1718 wapbl_replay_free(mp->mnt_wapbl_replay);
1719 mp->mnt_wapbl_replay = 0;
1720 }
1721 error = ffs_wapbl_stop(mp, doforce && (mntflags & MNT_FORCE));
1722 if (error) {
1723 return error;
1724 }
1725 #endif /* WAPBL */
1726
1727 if (ump->um_devvp->v_type != VBAD)
1728 spec_node_setmountedfs(ump->um_devvp, NULL);
1729 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY);
1730 (void)VOP_CLOSE(ump->um_devvp, fs->fs_ronly ? FREAD : FREAD | FWRITE,
1731 NOCRED);
1732 vput(ump->um_devvp);
1733
1734 bsize = fs->fs_cssize;
1735 if (fs->fs_contigsumsize > 0)
1736 bsize += fs->fs_ncg * sizeof(int32_t);
1737 bsize += fs->fs_ncg * sizeof(*fs->fs_contigdirs);
1738 kmem_free(fs->fs_csp, bsize);
1739
1740 kmem_free(fs, fs->fs_sbsize);
1741 if (ump->um_oldfscompat != NULL)
1742 kmem_free(ump->um_oldfscompat, 512 + 3*sizeof(int32_t));
1743 mutex_destroy(&ump->um_lock);
1744 ffs_snapshot_fini(ump);
1745 kmem_free(ump, sizeof(*ump));
1746 mp->mnt_data = NULL;
1747 mp->mnt_flag &= ~MNT_LOCAL;
1748 fstrans_unmount(mp);
1749 return (0);
1750 }
1751
1752 /*
1753 * Flush out all the files in a filesystem.
1754 */
1755 int
1756 ffs_flushfiles(struct mount *mp, int flags, struct lwp *l)
1757 {
1758 extern int doforce;
1759 struct ufsmount *ump;
1760 int error;
1761
1762 if (!doforce)
1763 flags &= ~FORCECLOSE;
1764 ump = VFSTOUFS(mp);
1765 #ifdef QUOTA
1766 if ((error = quota1_umount(mp, flags)) != 0)
1767 return (error);
1768 #endif
1769 #ifdef QUOTA2
1770 if ((error = quota2_umount(mp, flags)) != 0)
1771 return (error);
1772 #endif
1773 #ifdef UFS_EXTATTR
1774 if (ump->um_fstype == UFS1) {
1775 if (ump->um_extattr.uepm_flags & UFS_EXTATTR_UEPM_STARTED)
1776 ufs_extattr_stop(mp, l);
1777 if (ump->um_extattr.uepm_flags & UFS_EXTATTR_UEPM_INITIALIZED)
1778 ufs_extattr_uepm_destroy(&ump->um_extattr);
1779 mp->mnt_flag &= ~MNT_EXTATTR;
1780 }
1781 #endif
1782 if ((error = vflush(mp, 0, SKIPSYSTEM | flags)) != 0)
1783 return (error);
1784 ffs_snapshot_unmount(mp);
1785 /*
1786 * Flush all the files.
1787 */
1788 error = vflush(mp, NULLVP, flags);
1789 if (error)
1790 return (error);
1791 /*
1792 * Flush filesystem metadata.
1793 */
1794 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY);
1795 error = VOP_FSYNC(ump->um_devvp, l->l_cred, FSYNC_WAIT, 0, 0);
1796 VOP_UNLOCK(ump->um_devvp);
1797 if (flags & FORCECLOSE) /* XXXDBJ */
1798 error = 0;
1799
1800 #ifdef WAPBL
1801 if (error)
1802 return error;
1803 if (mp->mnt_wapbl) {
1804 error = wapbl_flush(mp->mnt_wapbl, 1);
1805 if (flags & FORCECLOSE)
1806 error = 0;
1807 }
1808 #endif
1809
1810 return (error);
1811 }
1812
1813 /*
1814 * Get file system statistics.
1815 */
1816 int
1817 ffs_statvfs(struct mount *mp, struct statvfs *sbp)
1818 {
1819 struct ufsmount *ump;
1820 struct fs *fs;
1821
1822 ump = VFSTOUFS(mp);
1823 fs = ump->um_fs;
1824 mutex_enter(&ump->um_lock);
1825 sbp->f_bsize = fs->fs_bsize;
1826 sbp->f_frsize = fs->fs_fsize;
1827 sbp->f_iosize = fs->fs_bsize;
1828 sbp->f_blocks = fs->fs_dsize;
1829 sbp->f_bfree = ffs_blkstofrags(fs, fs->fs_cstotal.cs_nbfree) +
1830 fs->fs_cstotal.cs_nffree + FFS_DBTOFSB(fs, fs->fs_pendingblocks);
1831 sbp->f_bresvd = ((u_int64_t) fs->fs_dsize * (u_int64_t)
1832 fs->fs_minfree) / (u_int64_t) 100;
1833 if (sbp->f_bfree > sbp->f_bresvd)
1834 sbp->f_bavail = sbp->f_bfree - sbp->f_bresvd;
1835 else
1836 sbp->f_bavail = 0;
1837 sbp->f_files = fs->fs_ncg * fs->fs_ipg - UFS_ROOTINO;
1838 sbp->f_ffree = fs->fs_cstotal.cs_nifree + fs->fs_pendinginodes;
1839 sbp->f_favail = sbp->f_ffree;
1840 sbp->f_fresvd = 0;
1841 mutex_exit(&ump->um_lock);
1842 copy_statvfs_info(sbp, mp);
1843
1844 return (0);
1845 }
1846
1847 struct ffs_sync_ctx {
1848 int waitfor;
1849 bool is_suspending;
1850 };
1851
1852 static bool
1853 ffs_sync_selector(void *cl, struct vnode *vp)
1854 {
1855 struct ffs_sync_ctx *c = cl;
1856 struct inode *ip;
1857
1858 ip = VTOI(vp);
1859 /*
1860 * Skip the vnode/inode if inaccessible.
1861 */
1862 if (ip == NULL || vp->v_type == VNON)
1863 return false;
1864
1865 /*
1866 * We deliberately update inode times here. This will
1867 * prevent a massive queue of updates accumulating, only
1868 * to be handled by a call to unmount.
1869 *
1870 * XXX It would be better to have the syncer trickle these
1871 * out. Adjustment needed to allow registering vnodes for
1872 * sync when the vnode is clean, but the inode dirty. Or
1873 * have ufs itself trickle out inode updates.
1874 *
1875 * If doing a lazy sync, we don't care about metadata or
1876 * data updates, because they are handled by each vnode's
1877 * synclist entry. In this case we are only interested in
1878 * writing back modified inodes.
1879 */
1880 if ((ip->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE |
1881 IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) == 0 &&
1882 (c->waitfor == MNT_LAZY || (LIST_EMPTY(&vp->v_dirtyblkhd) &&
1883 UVM_OBJ_IS_CLEAN(&vp->v_uobj))))
1884 return false;
1885
1886 if (vp->v_type == VBLK && c->is_suspending)
1887 return false;
1888
1889 return true;
1890 }
1891
1892 /*
1893 * Go through the disk queues to initiate sandbagged IO;
1894 * go through the inodes to write those that have been modified;
1895 * initiate the writing of the super block if it has been modified.
1896 *
1897 * Note: we are always called with the filesystem marked `MPBUSY'.
1898 */
1899 int
1900 ffs_sync(struct mount *mp, int waitfor, kauth_cred_t cred)
1901 {
1902 struct vnode *vp;
1903 struct ufsmount *ump = VFSTOUFS(mp);
1904 struct fs *fs;
1905 struct vnode_iterator *marker;
1906 int error, allerror = 0;
1907 bool is_suspending;
1908 struct ffs_sync_ctx ctx;
1909
1910 fs = ump->um_fs;
1911 if (fs->fs_fmod != 0 && fs->fs_ronly != 0) { /* XXX */
1912 panic("%s: rofs mod, fs=%s", __func__, fs->fs_fsmnt);
1913 }
1914
1915 fstrans_start(mp, FSTRANS_SHARED);
1916 is_suspending = (fstrans_getstate(mp) == FSTRANS_SUSPENDING);
1917 /*
1918 * Write back each (modified) inode.
1919 */
1920 vfs_vnode_iterator_init(mp, &marker);
1921
1922 ctx.waitfor = waitfor;
1923 ctx.is_suspending = is_suspending;
1924 while ((vp = vfs_vnode_iterator_next(marker, ffs_sync_selector, &ctx)))
1925 {
1926 error = vn_lock(vp,
1927 LK_EXCLUSIVE | (waitfor == MNT_LAZY ? LK_NOWAIT : 0));
1928 if (error) {
1929 vrele(vp);
1930 continue;
1931 }
1932 if (waitfor == MNT_LAZY) {
1933 error = UFS_WAPBL_BEGIN(vp->v_mount);
1934 if (!error) {
1935 error = ffs_update(vp, NULL, NULL,
1936 UPDATE_CLOSE);
1937 UFS_WAPBL_END(vp->v_mount);
1938 }
1939 } else {
1940 error = VOP_FSYNC(vp, cred, FSYNC_NOLOG |
1941 (waitfor == MNT_WAIT ? FSYNC_WAIT : 0), 0, 0);
1942 }
1943 if (error)
1944 allerror = error;
1945 vput(vp);
1946 }
1947 vfs_vnode_iterator_destroy(marker);
1948
1949 /*
1950 * Force stale file system control information to be flushed.
1951 */
1952 if (waitfor != MNT_LAZY && (ump->um_devvp->v_numoutput > 0 ||
1953 !LIST_EMPTY(&ump->um_devvp->v_dirtyblkhd))) {
1954 vn_lock(ump->um_devvp, LK_EXCLUSIVE | LK_RETRY);
1955 if ((error = VOP_FSYNC(ump->um_devvp, cred,
1956 (waitfor == MNT_WAIT ? FSYNC_WAIT : 0) | FSYNC_NOLOG,
1957 0, 0)) != 0)
1958 allerror = error;
1959 VOP_UNLOCK(ump->um_devvp);
1960 }
1961 #if defined(QUOTA) || defined(QUOTA2)
1962 qsync(mp);
1963 #endif
1964 /*
1965 * Write back modified superblock.
1966 */
1967 if (fs->fs_fmod != 0) {
1968 fs->fs_fmod = 0;
1969 fs->fs_time = time_second;
1970 error = UFS_WAPBL_BEGIN(mp);
1971 if (error)
1972 allerror = error;
1973 else {
1974 if ((error = ffs_cgupdate(ump, waitfor)))
1975 allerror = error;
1976 UFS_WAPBL_END(mp);
1977 }
1978 }
1979
1980 #ifdef WAPBL
1981 if (mp->mnt_wapbl) {
1982 error = wapbl_flush(mp->mnt_wapbl, 0);
1983 if (error)
1984 allerror = error;
1985 }
1986 #endif
1987
1988 fstrans_done(mp);
1989 return (allerror);
1990 }
1991
1992 /*
1993 * Load inode from disk and initialize vnode.
1994 */
1995 static int
1996 ffs_init_vnode(struct ufsmount *ump, struct vnode *vp, ino_t ino)
1997 {
1998 struct fs *fs;
1999 struct inode *ip;
2000 struct buf *bp;
2001 int error;
2002
2003 fs = ump->um_fs;
2004
2005 /* Read in the disk contents for the inode. */
2006 error = bread(ump->um_devvp, FFS_FSBTODB(fs, ino_to_fsba(fs, ino)),
2007 (int)fs->fs_bsize, 0, &bp);
2008 if (error)
2009 return error;
2010
2011 /* Allocate and initialize inode. */
2012 ip = pool_cache_get(ffs_inode_cache, PR_WAITOK);
2013 memset(ip, 0, sizeof(struct inode));
2014 ip->i_ump = ump;
2015 ip->i_fs = fs;
2016 ip->i_dev = ump->um_dev;
2017 ip->i_number = ino;
2018 if (ump->um_fstype == UFS1)
2019 ip->i_din.ffs1_din = pool_cache_get(ffs_dinode1_cache,
2020 PR_WAITOK);
2021 else
2022 ip->i_din.ffs2_din = pool_cache_get(ffs_dinode2_cache,
2023 PR_WAITOK);
2024 ffs_load_inode(bp, ip, fs, ino);
2025 brelse(bp, 0);
2026 ip->i_vnode = vp;
2027 #if defined(QUOTA) || defined(QUOTA2)
2028 ufsquota_init(ip);
2029 #endif
2030
2031 /* Initialise vnode with this inode. */
2032 vp->v_tag = VT_UFS;
2033 vp->v_op = ffs_vnodeop_p;
2034 vp->v_vflag |= VV_LOCKSWORK;
2035 vp->v_data = ip;
2036
2037 /* Initialize genfs node. */
2038 genfs_node_init(vp, &ffs_genfsops);
2039
2040 return 0;
2041 }
2042
2043 /*
2044 * Undo ffs_init_vnode().
2045 */
2046 static void
2047 ffs_deinit_vnode(struct ufsmount *ump, struct vnode *vp)
2048 {
2049 struct inode *ip = VTOI(vp);
2050
2051 if (ump->um_fstype == UFS1)
2052 pool_cache_put(ffs_dinode1_cache, ip->i_din.ffs1_din);
2053 else
2054 pool_cache_put(ffs_dinode2_cache, ip->i_din.ffs2_din);
2055 pool_cache_put(ffs_inode_cache, ip);
2056
2057 genfs_node_destroy(vp);
2058 vp->v_data = NULL;
2059 }
2060
2061 /*
2062 * Read an inode from disk and initialize this vnode / inode pair.
2063 * Caller assures no other thread will try to load this inode.
2064 */
2065 int
2066 ffs_loadvnode(struct mount *mp, struct vnode *vp,
2067 const void *key, size_t key_len, const void **new_key)
2068 {
2069 ino_t ino;
2070 struct fs *fs;
2071 struct inode *ip;
2072 struct ufsmount *ump;
2073 int error;
2074
2075 KASSERT(key_len == sizeof(ino));
2076 memcpy(&ino, key, key_len);
2077 ump = VFSTOUFS(mp);
2078 fs = ump->um_fs;
2079
2080 error = ffs_init_vnode(ump, vp, ino);
2081 if (error)
2082 return error;
2083
2084 ip = VTOI(vp);
2085 if (ip->i_mode == 0) {
2086 ffs_deinit_vnode(ump, vp);
2087
2088 return ENOENT;
2089 }
2090
2091 /* Initialize the vnode from the inode. */
2092 ufs_vinit(mp, ffs_specop_p, ffs_fifoop_p, &vp);
2093
2094 /* Finish inode initialization. */
2095 ip->i_devvp = ump->um_devvp;
2096 vref(ip->i_devvp);
2097
2098 /*
2099 * Ensure that uid and gid are correct. This is a temporary
2100 * fix until fsck has been changed to do the update.
2101 */
2102
2103 if (fs->fs_magic == FS_UFS1_MAGIC && /* XXX */
2104 fs->fs_old_inodefmt < FS_44INODEFMT) { /* XXX */
2105 ip->i_uid = ip->i_ffs1_ouid; /* XXX */
2106 ip->i_gid = ip->i_ffs1_ogid; /* XXX */
2107 } /* XXX */
2108 uvm_vnp_setsize(vp, ip->i_size);
2109 *new_key = &ip->i_number;
2110 return 0;
2111 }
2112
2113 /*
2114 * Create a new inode on disk and initialize this vnode / inode pair.
2115 */
2116 int
2117 ffs_newvnode(struct mount *mp, struct vnode *dvp, struct vnode *vp,
2118 struct vattr *vap, kauth_cred_t cred,
2119 size_t *key_len, const void **new_key)
2120 {
2121 ino_t ino;
2122 struct fs *fs;
2123 struct inode *ip;
2124 struct timespec ts;
2125 struct ufsmount *ump;
2126 int error, mode;
2127
2128 KASSERT(dvp->v_mount == mp);
2129 KASSERT(vap->va_type != VNON);
2130
2131 *key_len = sizeof(ino);
2132 ump = VFSTOUFS(mp);
2133 fs = ump->um_fs;
2134 mode = MAKEIMODE(vap->va_type, vap->va_mode);
2135
2136 /* Allocate fresh inode. */
2137 error = ffs_valloc(dvp, mode, cred, &ino);
2138 if (error)
2139 return error;
2140
2141 /* Attach inode to vnode. */
2142 error = ffs_init_vnode(ump, vp, ino);
2143 if (error) {
2144 if (UFS_WAPBL_BEGIN(mp) == 0) {
2145 ffs_vfree(dvp, ino, mode);
2146 UFS_WAPBL_END(mp);
2147 }
2148 return error;
2149 }
2150
2151 ip = VTOI(vp);
2152 if (ip->i_mode) {
2153 panic("%s: dup alloc ino=%" PRId64 " on %s: mode %x/%x "
2154 "gen %x/%x size %" PRIx64 " blocks %" PRIx64,
2155 __func__, ino, fs->fs_fsmnt, DIP(ip, mode), ip->i_mode,
2156 DIP(ip, gen), ip->i_gen, DIP(ip, size), DIP(ip, blocks));
2157 }
2158 if (DIP(ip, size) || DIP(ip, blocks)) {
2159 printf("%s: ino=%" PRId64 " on %s: "
2160 "gen %x/%x has non zero blocks %" PRIx64 " or size %"
2161 PRIx64 "\n",
2162 __func__, ino, fs->fs_fsmnt, DIP(ip, gen), ip->i_gen,
2163 DIP(ip, blocks), DIP(ip, size));
2164 if ((ip)->i_ump->um_fstype == UFS1)
2165 panic("%s: dirty filesystem?", __func__);
2166 DIP_ASSIGN(ip, blocks, 0);
2167 DIP_ASSIGN(ip, size, 0);
2168 }
2169
2170 /* Set uid / gid. */
2171 if (cred == NOCRED || cred == FSCRED) {
2172 ip->i_gid = 0;
2173 ip->i_uid = 0;
2174 } else {
2175 ip->i_gid = VTOI(dvp)->i_gid;
2176 ip->i_uid = kauth_cred_geteuid(cred);
2177 }
2178 DIP_ASSIGN(ip, gid, ip->i_gid);
2179 DIP_ASSIGN(ip, uid, ip->i_uid);
2180
2181 #if defined(QUOTA) || defined(QUOTA2)
2182 error = UFS_WAPBL_BEGIN(mp);
2183 if (error) {
2184 ffs_deinit_vnode(ump, vp);
2185
2186 return error;
2187 }
2188 error = chkiq(ip, 1, cred, 0);
2189 if (error) {
2190 ffs_vfree(dvp, ino, mode);
2191 UFS_WAPBL_END(mp);
2192 ffs_deinit_vnode(ump, vp);
2193
2194 return error;
2195 }
2196 UFS_WAPBL_END(mp);
2197 #endif
2198
2199 /* Set type and finalize. */
2200 ip->i_flags = 0;
2201 DIP_ASSIGN(ip, flags, 0);
2202 ip->i_mode = mode;
2203 DIP_ASSIGN(ip, mode, mode);
2204 if (vap->va_rdev != VNOVAL) {
2205 /*
2206 * Want to be able to use this to make badblock
2207 * inodes, so don't truncate the dev number.
2208 */
2209 if (ump->um_fstype == UFS1)
2210 ip->i_ffs1_rdev = ufs_rw32(vap->va_rdev,
2211 UFS_MPNEEDSWAP(ump));
2212 else
2213 ip->i_ffs2_rdev = ufs_rw64(vap->va_rdev,
2214 UFS_MPNEEDSWAP(ump));
2215 }
2216 ufs_vinit(mp, ffs_specop_p, ffs_fifoop_p, &vp);
2217 ip->i_devvp = ump->um_devvp;
2218 vref(ip->i_devvp);
2219
2220 /* Set up a new generation number for this inode. */
2221 ip->i_gen++;
2222 DIP_ASSIGN(ip, gen, ip->i_gen);
2223 if (fs->fs_magic == FS_UFS2_MAGIC) {
2224 vfs_timestamp(&ts);
2225 ip->i_ffs2_birthtime = ts.tv_sec;
2226 ip->i_ffs2_birthnsec = ts.tv_nsec;
2227 }
2228
2229 uvm_vnp_setsize(vp, ip->i_size);
2230 *new_key = &ip->i_number;
2231 return 0;
2232 }
2233
2234 /*
2235 * File handle to vnode
2236 *
2237 * Have to be really careful about stale file handles:
2238 * - check that the inode number is valid
2239 * - call ffs_vget() to get the locked inode
2240 * - check for an unallocated inode (i_mode == 0)
2241 * - check that the given client host has export rights and return
2242 * those rights via. exflagsp and credanonp
2243 */
2244 int
2245 ffs_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
2246 {
2247 struct ufid ufh;
2248 int error;
2249
2250 if (fhp->fid_len != sizeof(struct ufid))
2251 return EINVAL;
2252
2253 memcpy(&ufh, fhp, sizeof(ufh));
2254 if ((error = ffs_checkrange(mp, ufh.ufid_ino)) != 0)
2255 return error;
2256
2257 return (ufs_fhtovp(mp, &ufh, vpp));
2258 }
2259
2260 /*
2261 * Vnode pointer to File handle
2262 */
2263 /* ARGSUSED */
2264 int
2265 ffs_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size)
2266 {
2267 struct inode *ip;
2268 struct ufid ufh;
2269
2270 if (*fh_size < sizeof(struct ufid)) {
2271 *fh_size = sizeof(struct ufid);
2272 return E2BIG;
2273 }
2274 ip = VTOI(vp);
2275 *fh_size = sizeof(struct ufid);
2276 memset(&ufh, 0, sizeof(ufh));
2277 ufh.ufid_len = sizeof(struct ufid);
2278 ufh.ufid_ino = ip->i_number;
2279 ufh.ufid_gen = ip->i_gen;
2280 memcpy(fhp, &ufh, sizeof(ufh));
2281 return (0);
2282 }
2283
2284 void
2285 ffs_init(void)
2286 {
2287 if (ffs_initcount++ > 0)
2288 return;
2289
2290 ffs_inode_cache = pool_cache_init(sizeof(struct inode), 0, 0, 0,
2291 "ffsino", NULL, IPL_NONE, NULL, NULL, NULL);
2292 ffs_dinode1_cache = pool_cache_init(sizeof(struct ufs1_dinode), 0, 0, 0,
2293 "ffsdino1", NULL, IPL_NONE, NULL, NULL, NULL);
2294 ffs_dinode2_cache = pool_cache_init(sizeof(struct ufs2_dinode), 0, 0, 0,
2295 "ffsdino2", NULL, IPL_NONE, NULL, NULL, NULL);
2296 ufs_init();
2297 }
2298
2299 void
2300 ffs_reinit(void)
2301 {
2302 ufs_reinit();
2303 }
2304
2305 void
2306 ffs_done(void)
2307 {
2308 if (--ffs_initcount > 0)
2309 return;
2310
2311 ufs_done();
2312 pool_cache_destroy(ffs_dinode2_cache);
2313 pool_cache_destroy(ffs_dinode1_cache);
2314 pool_cache_destroy(ffs_inode_cache);
2315 }
2316
2317 /*
2318 * Write a superblock and associated information back to disk.
2319 */
2320 int
2321 ffs_sbupdate(struct ufsmount *mp, int waitfor)
2322 {
2323 struct fs *fs = mp->um_fs;
2324 struct buf *bp;
2325 int error;
2326 u_int32_t saveflag;
2327
2328 error = ffs_getblk(mp->um_devvp,
2329 fs->fs_sblockloc / DEV_BSIZE, FFS_NOBLK,
2330 fs->fs_sbsize, false, &bp);
2331 if (error)
2332 return error;
2333 saveflag = fs->fs_flags & FS_INTERNAL;
2334 fs->fs_flags &= ~FS_INTERNAL;
2335
2336 memcpy(bp->b_data, fs, fs->fs_sbsize);
2337
2338 ffs_oldfscompat_write((struct fs *)bp->b_data, mp);
2339 #ifdef FFS_EI
2340 if (mp->um_flags & UFS_NEEDSWAP)
2341 ffs_sb_swap((struct fs *)bp->b_data, (struct fs *)bp->b_data);
2342 #endif
2343 fs->fs_flags |= saveflag;
2344
2345 if (waitfor == MNT_WAIT)
2346 error = bwrite(bp);
2347 else
2348 bawrite(bp);
2349 return (error);
2350 }
2351
2352 int
2353 ffs_cgupdate(struct ufsmount *mp, int waitfor)
2354 {
2355 struct fs *fs = mp->um_fs;
2356 struct buf *bp;
2357 int blks;
2358 void *space;
2359 int i, size, error = 0, allerror = 0;
2360
2361 UFS_WAPBL_JLOCK_ASSERT(mp);
2362
2363 allerror = ffs_sbupdate(mp, waitfor);
2364 blks = howmany(fs->fs_cssize, fs->fs_fsize);
2365 space = fs->fs_csp;
2366 for (i = 0; i < blks; i += fs->fs_frag) {
2367 size = fs->fs_bsize;
2368 if (i + fs->fs_frag > blks)
2369 size = (blks - i) * fs->fs_fsize;
2370 error = ffs_getblk(mp->um_devvp, FFS_FSBTODB(fs, fs->fs_csaddr + i),
2371 FFS_NOBLK, size, false, &bp);
2372 if (error)
2373 break;
2374 #ifdef FFS_EI
2375 if (mp->um_flags & UFS_NEEDSWAP)
2376 ffs_csum_swap((struct csum*)space,
2377 (struct csum*)bp->b_data, size);
2378 else
2379 #endif
2380 memcpy(bp->b_data, space, (u_int)size);
2381 space = (char *)space + size;
2382 if (waitfor == MNT_WAIT)
2383 error = bwrite(bp);
2384 else
2385 bawrite(bp);
2386 }
2387 if (!allerror && error)
2388 allerror = error;
2389 return (allerror);
2390 }
2391
2392 int
2393 ffs_extattrctl(struct mount *mp, int cmd, struct vnode *vp,
2394 int attrnamespace, const char *attrname)
2395 {
2396 #ifdef UFS_EXTATTR
2397 /*
2398 * File-backed extended attributes are only supported on UFS1.
2399 * UFS2 has native extended attributes.
2400 */
2401 if (VFSTOUFS(mp)->um_fstype == UFS1)
2402 return (ufs_extattrctl(mp, cmd, vp, attrnamespace, attrname));
2403 #endif
2404 return (vfs_stdextattrctl(mp, cmd, vp, attrnamespace, attrname));
2405 }
2406
2407 int
2408 ffs_suspendctl(struct mount *mp, int cmd)
2409 {
2410 int error;
2411 struct lwp *l = curlwp;
2412
2413 switch (cmd) {
2414 case SUSPEND_SUSPEND:
2415 if ((error = fstrans_setstate(mp, FSTRANS_SUSPENDING)) != 0)
2416 return error;
2417 error = ffs_sync(mp, MNT_WAIT, l->l_proc->p_cred);
2418 if (error == 0)
2419 error = fstrans_setstate(mp, FSTRANS_SUSPENDED);
2420 #ifdef WAPBL
2421 if (error == 0 && mp->mnt_wapbl)
2422 error = wapbl_flush(mp->mnt_wapbl, 1);
2423 #endif
2424 if (error != 0) {
2425 (void) fstrans_setstate(mp, FSTRANS_NORMAL);
2426 return error;
2427 }
2428 return 0;
2429
2430 case SUSPEND_RESUME:
2431 return fstrans_setstate(mp, FSTRANS_NORMAL);
2432
2433 default:
2434 return EINVAL;
2435 }
2436 }
2437
2438 /*
2439 * Synch vnode for a mounted file system.
2440 */
2441 static int
2442 ffs_vfs_fsync(vnode_t *vp, int flags)
2443 {
2444 int error, i, pflags;
2445 #ifdef WAPBL
2446 struct mount *mp;
2447 #endif
2448
2449 KASSERT(vp->v_type == VBLK);
2450 KASSERT(spec_node_getmountedfs(vp) != NULL);
2451
2452 /*
2453 * Flush all dirty data associated with the vnode.
2454 */
2455 pflags = PGO_ALLPAGES | PGO_CLEANIT;
2456 if ((flags & FSYNC_WAIT) != 0)
2457 pflags |= PGO_SYNCIO;
2458 mutex_enter(vp->v_interlock);
2459 error = VOP_PUTPAGES(vp, 0, 0, pflags);
2460 if (error)
2461 return error;
2462
2463 #ifdef WAPBL
2464 mp = spec_node_getmountedfs(vp);
2465 if (mp && mp->mnt_wapbl) {
2466 /*
2467 * Don't bother writing out metadata if the syncer is
2468 * making the request. We will let the sync vnode
2469 * write it out in a single burst through a call to
2470 * VFS_SYNC().
2471 */
2472 if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY | FSYNC_NOLOG)) != 0)
2473 return 0;
2474
2475 /*
2476 * Don't flush the log if the vnode being flushed
2477 * contains no dirty buffers that could be in the log.
2478 */
2479 if (!LIST_EMPTY(&vp->v_dirtyblkhd)) {
2480 error = wapbl_flush(mp->mnt_wapbl, 0);
2481 if (error)
2482 return error;
2483 }
2484
2485 if ((flags & FSYNC_WAIT) != 0) {
2486 mutex_enter(vp->v_interlock);
2487 while (vp->v_numoutput)
2488 cv_wait(&vp->v_cv, vp->v_interlock);
2489 mutex_exit(vp->v_interlock);
2490 }
2491
2492 return 0;
2493 }
2494 #endif /* WAPBL */
2495
2496 error = vflushbuf(vp, flags);
2497 if (error == 0 && (flags & FSYNC_CACHE) != 0) {
2498 i = 1;
2499 (void)VOP_IOCTL(vp, DIOCCACHESYNC, &i, FWRITE,
2500 kauth_cred_get());
2501 }
2502
2503 return error;
2504 }
2505