2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "xfs_types.h"
24 #include "xfs_trans.h"
29 #include "xfs_dmapi.h"
30 #include "xfs_mount.h"
31 #include "xfs_da_btree.h"
32 #include "xfs_bmap_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_alloc_btree.h"
35 #include "xfs_dir_sf.h"
36 #include "xfs_dir2_sf.h"
37 #include "xfs_attr_sf.h"
38 #include "xfs_dinode.h"
39 #include "xfs_inode.h"
40 #include "xfs_inode_item.h"
41 #include "xfs_btree.h"
42 #include "xfs_alloc.h"
43 #include "xfs_ialloc.h"
44 #include "xfs_quota.h"
45 #include "xfs_error.h"
48 #include "xfs_refcache.h"
49 #include "xfs_buf_item.h"
50 #include "xfs_log_priv.h"
51 #include "xfs_dir2_trace.h"
52 #include "xfs_extfree_item.h"
56 #include "xfs_fsops.h"
58 STATIC int xfs_sync(bhv_desc_t *, int, cred_t *);
63 extern kmem_zone_t *xfs_bmap_free_item_zone;
64 extern kmem_zone_t *xfs_btree_cur_zone;
65 extern kmem_zone_t *xfs_trans_zone;
66 extern kmem_zone_t *xfs_buf_item_zone;
67 extern kmem_zone_t *xfs_dabuf_zone;
68 #ifdef XFS_DABUF_DEBUG
69 extern lock_t xfs_dabuf_global_lock;
70 spinlock_init(&xfs_dabuf_global_lock, "xfsda");
74 * Initialize all of the zone allocators we use.
76 xfs_bmap_free_item_zone = kmem_zone_init(sizeof(xfs_bmap_free_item_t),
77 "xfs_bmap_free_item");
78 xfs_btree_cur_zone = kmem_zone_init(sizeof(xfs_btree_cur_t),
80 xfs_trans_zone = kmem_zone_init(sizeof(xfs_trans_t), "xfs_trans");
82 kmem_zone_init(sizeof(xfs_da_state_t), "xfs_da_state");
83 xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf");
84 xfs_ifork_zone = kmem_zone_init(sizeof(xfs_ifork_t), "xfs_ifork");
85 xfs_acl_zone_init(xfs_acl_zone, "xfs_acl");
88 * The size of the zone allocated buf log item is the maximum
89 * size possible under XFS. This wastes a little bit of memory,
90 * but it is much faster.
93 kmem_zone_init((sizeof(xfs_buf_log_item_t) +
94 (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) /
95 NBWORD) * sizeof(int))),
98 kmem_zone_init((sizeof(xfs_efd_log_item_t) +
99 ((XFS_EFD_MAX_FAST_EXTENTS - 1) *
100 sizeof(xfs_extent_t))),
103 kmem_zone_init((sizeof(xfs_efi_log_item_t) +
104 ((XFS_EFI_MAX_FAST_EXTENTS - 1) *
105 sizeof(xfs_extent_t))),
109 * These zones warrant special memory allocator hints
112 kmem_zone_init_flags(sizeof(xfs_inode_t), "xfs_inode",
113 KM_ZONE_HWALIGN | KM_ZONE_RECLAIM |
114 KM_ZONE_SPREAD, NULL);
116 kmem_zone_init_flags(sizeof(xfs_inode_log_item_t), "xfs_ili",
117 KM_ZONE_SPREAD, NULL);
119 kmem_zone_init_flags(sizeof(xfs_chashlist_t), "xfs_chashlist",
120 KM_ZONE_SPREAD, NULL);
123 * Allocate global trace buffers.
125 #ifdef XFS_ALLOC_TRACE
126 xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_SLEEP);
128 #ifdef XFS_BMAP_TRACE
129 xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_SLEEP);
131 #ifdef XFS_BMBT_TRACE
132 xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_SLEEP);
135 xfs_dir_trace_buf = ktrace_alloc(XFS_DIR_TRACE_SIZE, KM_SLEEP);
137 #ifdef XFS_ATTR_TRACE
138 xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_SLEEP);
140 #ifdef XFS_DIR2_TRACE
141 xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_SLEEP);
146 #if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
147 xfs_error_test_init();
148 #endif /* DEBUG || INDUCE_IO_ERROR */
151 xfs_sysctl_register();
158 extern kmem_zone_t *xfs_bmap_free_item_zone;
159 extern kmem_zone_t *xfs_btree_cur_zone;
160 extern kmem_zone_t *xfs_inode_zone;
161 extern kmem_zone_t *xfs_trans_zone;
162 extern kmem_zone_t *xfs_da_state_zone;
163 extern kmem_zone_t *xfs_dabuf_zone;
164 extern kmem_zone_t *xfs_efd_zone;
165 extern kmem_zone_t *xfs_efi_zone;
166 extern kmem_zone_t *xfs_buf_item_zone;
167 extern kmem_zone_t *xfs_chashlist_zone;
169 xfs_cleanup_procfs();
170 xfs_sysctl_unregister();
171 xfs_refcache_destroy();
172 xfs_acl_zone_destroy(xfs_acl_zone);
174 #ifdef XFS_DIR2_TRACE
175 ktrace_free(xfs_dir2_trace_buf);
177 #ifdef XFS_ATTR_TRACE
178 ktrace_free(xfs_attr_trace_buf);
181 ktrace_free(xfs_dir_trace_buf);
183 #ifdef XFS_BMBT_TRACE
184 ktrace_free(xfs_bmbt_trace_buf);
186 #ifdef XFS_BMAP_TRACE
187 ktrace_free(xfs_bmap_trace_buf);
189 #ifdef XFS_ALLOC_TRACE
190 ktrace_free(xfs_alloc_trace_buf);
193 kmem_zone_destroy(xfs_bmap_free_item_zone);
194 kmem_zone_destroy(xfs_btree_cur_zone);
195 kmem_zone_destroy(xfs_inode_zone);
196 kmem_zone_destroy(xfs_trans_zone);
197 kmem_zone_destroy(xfs_da_state_zone);
198 kmem_zone_destroy(xfs_dabuf_zone);
199 kmem_zone_destroy(xfs_buf_item_zone);
200 kmem_zone_destroy(xfs_efd_zone);
201 kmem_zone_destroy(xfs_efi_zone);
202 kmem_zone_destroy(xfs_ifork_zone);
203 kmem_zone_destroy(xfs_ili_zone);
204 kmem_zone_destroy(xfs_chashlist_zone);
210 * This function fills in xfs_mount_t fields based on mount args.
211 * Note: the superblock has _not_ yet been read in.
216 struct xfs_mount_args *ap,
217 struct xfs_mount *mp)
219 /* Values are in BBs */
220 if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
222 * At this point the superblock has not been read
223 * in, therefore we do not know the block size.
224 * Before the mount call ends we will convert
227 mp->m_dalign = ap->sunit;
228 mp->m_swidth = ap->swidth;
231 if (ap->logbufs != -1 &&
233 (ap->logbufs < XLOG_MIN_ICLOGS ||
234 ap->logbufs > XLOG_MAX_ICLOGS)) {
236 "XFS: invalid logbufs value: %d [not %d-%d]",
237 ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS);
238 return XFS_ERROR(EINVAL);
240 mp->m_logbufs = ap->logbufs;
241 if (ap->logbufsize != -1 &&
242 ap->logbufsize != 0 &&
243 ap->logbufsize != 16 * 1024 &&
244 ap->logbufsize != 32 * 1024 &&
245 ap->logbufsize != 64 * 1024 &&
246 ap->logbufsize != 128 * 1024 &&
247 ap->logbufsize != 256 * 1024) {
249 "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
251 return XFS_ERROR(EINVAL);
253 mp->m_ihsize = ap->ihashsize;
254 mp->m_logbsize = ap->logbufsize;
255 mp->m_fsname_len = strlen(ap->fsname) + 1;
256 mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP);
257 strcpy(mp->m_fsname, ap->fsname);
259 mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP);
260 strcpy(mp->m_rtname, ap->rtname);
262 if (ap->logname[0]) {
263 mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP);
264 strcpy(mp->m_logname, ap->logname);
267 if (ap->flags & XFSMNT_WSYNC)
268 mp->m_flags |= XFS_MOUNT_WSYNC;
270 if (ap->flags & XFSMNT_INO64) {
271 mp->m_flags |= XFS_MOUNT_INO64;
272 mp->m_inoadd = XFS_INO64_OFFSET;
275 if (ap->flags & XFSMNT_RETERR)
276 mp->m_flags |= XFS_MOUNT_RETERR;
277 if (ap->flags & XFSMNT_NOALIGN)
278 mp->m_flags |= XFS_MOUNT_NOALIGN;
279 if (ap->flags & XFSMNT_SWALLOC)
280 mp->m_flags |= XFS_MOUNT_SWALLOC;
281 if (ap->flags & XFSMNT_OSYNCISOSYNC)
282 mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
283 if (ap->flags & XFSMNT_32BITINODES)
284 mp->m_flags |= XFS_MOUNT_32BITINODES;
286 if (ap->flags & XFSMNT_IOSIZE) {
287 if (ap->iosizelog > XFS_MAX_IO_LOG ||
288 ap->iosizelog < XFS_MIN_IO_LOG) {
290 "XFS: invalid log iosize: %d [not %d-%d]",
291 ap->iosizelog, XFS_MIN_IO_LOG,
293 return XFS_ERROR(EINVAL);
296 mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
297 mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
300 if (ap->flags & XFSMNT_IHASHSIZE)
301 mp->m_flags |= XFS_MOUNT_IHASHSIZE;
302 if (ap->flags & XFSMNT_IDELETE)
303 mp->m_flags |= XFS_MOUNT_IDELETE;
304 if (ap->flags & XFSMNT_DIRSYNC)
305 mp->m_flags |= XFS_MOUNT_DIRSYNC;
306 if (ap->flags & XFSMNT_ATTR2)
307 mp->m_flags |= XFS_MOUNT_ATTR2;
309 if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE)
310 mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
311 if (ap->flags2 & XFSMNT2_TAGXID)
312 mp->m_flags |= XFS_MOUNT_TAGXID;
315 * no recovery flag requires a read-only mount
317 if (ap->flags & XFSMNT_NORECOVERY) {
318 if (!(vfs->vfs_flag & VFS_RDONLY)) {
320 "XFS: tried to mount a FS read-write without recovery!");
321 return XFS_ERROR(EINVAL);
323 mp->m_flags |= XFS_MOUNT_NORECOVERY;
326 if (ap->flags & XFSMNT_NOUUID)
327 mp->m_flags |= XFS_MOUNT_NOUUID;
328 if (ap->flags & XFSMNT_BARRIER)
329 mp->m_flags |= XFS_MOUNT_BARRIER;
331 mp->m_flags &= ~XFS_MOUNT_BARRIER;
337 * This function fills in xfs_mount_t fields based on mount args.
338 * Note: the superblock _has_ now been read in.
343 struct xfs_mount_args *ap,
344 struct xfs_mount *mp)
346 int ronly = (vfs->vfs_flag & VFS_RDONLY);
348 /* Fail a mount where the logbuf is smaller then the log stripe */
349 if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) {
350 if ((ap->logbufsize <= 0) &&
351 (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) {
352 mp->m_logbsize = mp->m_sb.sb_logsunit;
353 } else if (ap->logbufsize > 0 &&
354 ap->logbufsize < mp->m_sb.sb_logsunit) {
356 "XFS: logbuf size must be greater than or equal to log stripe size");
357 return XFS_ERROR(EINVAL);
360 /* Fail a mount if the logbuf is larger than 32K */
361 if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) {
363 "XFS: logbuf size for version 1 logs must be 16K or 32K");
364 return XFS_ERROR(EINVAL);
368 if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
369 mp->m_flags |= XFS_MOUNT_ATTR2;
373 * prohibit r/w mounts of read-only filesystems
375 if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
377 "XFS: cannot mount a read-only filesystem as read-write");
378 return XFS_ERROR(EROFS);
382 * check for shared mount.
384 if (ap->flags & XFSMNT_SHARED) {
385 if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb))
386 return XFS_ERROR(EINVAL);
389 * For IRIX 6.5, shared mounts must have the shared
390 * version bit set, have the persistent readonly
391 * field set, must be version 0 and can only be mounted
394 if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) ||
395 (mp->m_sb.sb_shared_vn != 0))
396 return XFS_ERROR(EINVAL);
398 mp->m_flags |= XFS_MOUNT_SHARED;
401 * Shared XFS V0 can't deal with DMI. Return EINVAL.
403 if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI))
404 return XFS_ERROR(EINVAL);
407 if (ap->flags2 & XFSMNT2_TAGXID)
408 vfs->vfs_super->s_flags |= MS_TAGXID;
415 * The file system configurations are:
416 * (1) device (partition) with data and internal log
417 * (2) logical volume with data and log subvolumes.
418 * (3) logical volume with data, log, and realtime subvolumes.
420 * We only have to handle opening the log and realtime volumes here if
421 * they are present. The data subvolume has already been opened by
422 * get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev.
426 struct bhv_desc *bhvp,
427 struct xfs_mount_args *args,
430 struct vfs *vfsp = bhvtovfs(bhvp);
432 struct xfs_mount *mp = XFS_BHVTOM(bhvp);
433 struct block_device *ddev, *logdev, *rtdev;
434 int flags = 0, error;
436 ddev = vfsp->vfs_super->s_bdev;
437 logdev = rtdev = NULL;
440 * Setup xfs_mount function vectors from available behaviors
442 p = vfs_bhv_lookup(vfsp, VFS_POSITION_DM);
443 mp->m_dm_ops = p ? *(xfs_dmops_t *) vfs_bhv_custom(p) : xfs_dmcore_stub;
444 p = vfs_bhv_lookup(vfsp, VFS_POSITION_QM);
445 mp->m_qm_ops = p ? *(xfs_qmops_t *) vfs_bhv_custom(p) : xfs_qmcore_stub;
446 p = vfs_bhv_lookup(vfsp, VFS_POSITION_IO);
447 mp->m_io_ops = p ? *(xfs_ioops_t *) vfs_bhv_custom(p) : xfs_iocore_xfs;
449 if (args->flags & XFSMNT_QUIET)
450 flags |= XFS_MFSI_QUIET;
453 * Open real time and log devices - order is important.
455 if (args->logname[0]) {
456 error = xfs_blkdev_get(mp, args->logname, &logdev);
460 if (args->rtname[0]) {
461 error = xfs_blkdev_get(mp, args->rtname, &rtdev);
463 xfs_blkdev_put(logdev);
467 if (rtdev == ddev || rtdev == logdev) {
469 "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
470 xfs_blkdev_put(logdev);
471 xfs_blkdev_put(rtdev);
477 * Setup xfs_mount buffer target pointers
480 mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0);
481 if (!mp->m_ddev_targp) {
482 xfs_blkdev_put(logdev);
483 xfs_blkdev_put(rtdev);
487 mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1);
488 if (!mp->m_rtdev_targp)
491 mp->m_logdev_targp = (logdev && logdev != ddev) ?
492 xfs_alloc_buftarg(logdev, 1) : mp->m_ddev_targp;
493 if (!mp->m_logdev_targp)
497 * Setup flags based on mount(2) options and then the superblock
499 error = xfs_start_flags(vfsp, args, mp);
502 error = xfs_readsb(mp, flags);
505 error = xfs_finish_flags(vfsp, args, mp);
510 * Setup xfs_mount buffer target pointers based on superblock
512 error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize,
513 mp->m_sb.sb_sectsize);
514 if (!error && logdev && logdev != ddev) {
515 unsigned int log_sector_size = BBSIZE;
517 if (XFS_SB_VERSION_HASSECTOR(&mp->m_sb))
518 log_sector_size = mp->m_sb.sb_logsectsize;
519 error = xfs_setsize_buftarg(mp->m_logdev_targp,
520 mp->m_sb.sb_blocksize,
524 error = xfs_setsize_buftarg(mp->m_rtdev_targp,
525 mp->m_sb.sb_blocksize,
526 mp->m_sb.sb_sectsize);
530 if ((mp->m_flags & XFS_MOUNT_BARRIER) && !(vfsp->vfs_flag & VFS_RDONLY))
531 xfs_mountfs_check_barriers(mp);
533 error = XFS_IOINIT(vfsp, args, flags);
543 xfs_binval(mp->m_ddev_targp);
544 if (logdev && logdev != ddev)
545 xfs_binval(mp->m_logdev_targp);
547 xfs_binval(mp->m_rtdev_targp);
549 xfs_unmountfs_close(mp, credp);
559 struct vfs *vfsp = bhvtovfs(bdp);
560 xfs_mount_t *mp = XFS_BHVTOM(bdp);
563 int unmount_event_wanted = 0;
564 int unmount_event_flags = 0;
565 int xfs_unmountfs_needed = 0;
571 if (vfsp->vfs_flag & VFS_DMI) {
572 error = XFS_SEND_PREUNMOUNT(mp, vfsp,
573 rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL,
575 (mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))?
576 0:DM_FLAGS_UNWANTED);
578 return XFS_ERROR(error);
579 unmount_event_wanted = 1;
580 unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))?
581 0 : DM_FLAGS_UNWANTED;
585 * First blow any referenced inode from this file system
586 * out of the reference cache, and delete the timer.
588 xfs_refcache_purge_mp(mp);
590 XFS_bflush(mp->m_ddev_targp);
591 error = xfs_unmount_flush(mp, 0);
595 ASSERT(vn_count(rvp) == 1);
598 * Drop the reference count
603 * If we're forcing a shutdown, typically because of a media error,
604 * we want to make sure we invalidate dirty pages that belong to
605 * referenced vnodes as well.
607 if (XFS_FORCED_SHUTDOWN(mp)) {
608 error = xfs_sync(&mp->m_bhv,
609 (SYNC_WAIT | SYNC_CLOSE), credp);
610 ASSERT(error != EFSCORRUPTED);
612 xfs_unmountfs_needed = 1;
615 /* Send DMAPI event, if required.
616 * Then do xfs_unmountfs() if needed.
617 * Then return error (or zero).
619 if (unmount_event_wanted) {
620 /* Note: mp structure must still exist for
621 * XFS_SEND_UNMOUNT() call.
623 XFS_SEND_UNMOUNT(mp, vfsp, error == 0 ? rvp : NULL,
624 DM_RIGHT_NULL, 0, error, unmount_event_flags);
626 if (xfs_unmountfs_needed) {
628 * Call common unmount function to flush to disk
629 * and free the super block buffer & mount structures.
631 xfs_unmountfs(mp, credp);
634 return XFS_ERROR(error);
641 int count = 0, pincount;
643 xfs_refcache_purge_mp(mp);
644 xfs_flush_buftarg(mp->m_ddev_targp, 0);
645 xfs_finish_reclaim_all(mp, 0);
647 /* This loop must run at least twice.
648 * The first instance of the loop will flush
649 * most meta data but that will generate more
650 * meta data (typically directory updates).
651 * Which then must be flushed and logged before
652 * we can write the unmount record.
655 xfs_syncsub(mp, SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT, 0, NULL);
656 pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
670 struct xfs_mount_args *args)
672 struct vfs *vfsp = bhvtovfs(bdp);
673 xfs_mount_t *mp = XFS_BHVTOM(bdp);
676 if (!(*flags & MS_RDONLY)) { /* rw/ro -> rw */
677 if (vfsp->vfs_flag & VFS_RDONLY)
678 vfsp->vfs_flag &= ~VFS_RDONLY;
679 if (args->flags & XFSMNT_BARRIER) {
680 mp->m_flags |= XFS_MOUNT_BARRIER;
681 xfs_mountfs_check_barriers(mp);
683 mp->m_flags &= ~XFS_MOUNT_BARRIER;
685 } else if (!(vfsp->vfs_flag & VFS_RDONLY)) { /* rw -> ro */
686 VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR, NULL, error);
688 xfs_log_unmount_write(mp);
689 xfs_unmountfs_writesb(mp);
690 vfsp->vfs_flag |= VFS_RDONLY;
696 * xfs_unmount_flush implements a set of flush operation on special
697 * inodes, which are needed as a separate set of operations so that
698 * they can be called as part of relocation process.
702 xfs_mount_t *mp, /* Mount structure we are getting
704 int relocation) /* Called from vfs relocation. */
706 xfs_inode_t *rip = mp->m_rootip;
708 xfs_inode_t *rsumip = NULL;
709 vnode_t *rvp = XFS_ITOV(rip);
712 xfs_ilock(rip, XFS_ILOCK_EXCL);
716 * Flush out the real time inodes.
718 if ((rbmip = mp->m_rbmip) != NULL) {
719 xfs_ilock(rbmip, XFS_ILOCK_EXCL);
721 error = xfs_iflush(rbmip, XFS_IFLUSH_SYNC);
722 xfs_iunlock(rbmip, XFS_ILOCK_EXCL);
724 if (error == EFSCORRUPTED)
727 ASSERT(vn_count(XFS_ITOV(rbmip)) == 1);
729 rsumip = mp->m_rsumip;
730 xfs_ilock(rsumip, XFS_ILOCK_EXCL);
732 error = xfs_iflush(rsumip, XFS_IFLUSH_SYNC);
733 xfs_iunlock(rsumip, XFS_ILOCK_EXCL);
735 if (error == EFSCORRUPTED)
738 ASSERT(vn_count(XFS_ITOV(rsumip)) == 1);
742 * Synchronously flush root inode to disk
744 error = xfs_iflush(rip, XFS_IFLUSH_SYNC);
745 if (error == EFSCORRUPTED)
748 if (vn_count(rvp) != 1 && !relocation) {
749 xfs_iunlock(rip, XFS_ILOCK_EXCL);
750 return XFS_ERROR(EBUSY);
754 * Release dquot that rootinode, rbmino and rsumino might be holding,
755 * flush and purge the quota inodes.
757 error = XFS_QM_UNMOUNT(mp);
758 if (error == EFSCORRUPTED)
762 VN_RELE(XFS_ITOV(rbmip));
763 VN_RELE(XFS_ITOV(rsumip));
766 xfs_iunlock(rip, XFS_ILOCK_EXCL);
773 xfs_iunlock(rip, XFS_ILOCK_EXCL);
775 return XFS_ERROR(EFSCORRUPTED);
779 * xfs_root extracts the root vnode from a vfs.
781 * vfsp -- the vfs struct for the desired file system
782 * vpp -- address of the caller's vnode pointer which should be
783 * set to the desired fs root vnode
792 vp = XFS_ITOV((XFS_BHVTOM(bdp))->m_rootip);
801 * Fill in the statvfs structure for the given file system. We use
802 * the superblock lock in the mount structure to ensure a consistent
803 * snapshot of the counters returned.
817 mp = XFS_BHVTOM(bdp);
820 statp->f_type = XFS_SB_MAGIC;
822 xfs_icsb_sync_counters_lazy(mp);
824 statp->f_bsize = sbp->sb_blocksize;
825 lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0;
826 statp->f_blocks = sbp->sb_dblocks - lsize;
827 statp->f_bfree = statp->f_bavail = sbp->sb_fdblocks;
828 fakeinos = statp->f_bfree << sbp->sb_inopblog;
830 fakeinos += mp->m_inoadd;
833 MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER);
838 statp->f_files = min_t(typeof(statp->f_files),
841 statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree);
842 XFS_SB_UNLOCK(mp, s);
844 xfs_statvfs_fsid(statp, mp);
845 statp->f_namelen = MAXNAMELEN - 1;
852 * xfs_sync flushes any pending I/O to file system vfsp.
854 * This routine is called by vfs_sync() to make sure that things make it
855 * out to disk eventually, on sync() system calls to flush out everything,
856 * and when the file system is unmounted. For the vfs_sync() case, all
857 * we really need to do is sync out the log to make all of our meta-data
858 * updates permanent (except for timestamps). For calls from pflushd(),
859 * dirty pages are kept moving by calling pdflush() on the inodes
860 * containing them. We also flush the inodes that we can lock without
861 * sleeping and the superblock if we can lock it without sleeping from
862 * vfs_sync() so that items at the tail of the log are always moving out.
865 * SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want
866 * to sleep if we can help it. All we really need
867 * to do is ensure that the log is synced at least
868 * periodically. We also push the inodes and
869 * superblock if we can lock them without sleeping
870 * and they are not pinned.
871 * SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not
872 * set, then we really want to lock each inode and flush
874 * SYNC_WAIT - All the flushes that take place in this call should
876 * SYNC_DELWRI - This tells us to push dirty pages associated with
877 * inodes. SYNC_WAIT and SYNC_BDFLUSH are used to
878 * determine if they should be flushed sync, async, or
880 * SYNC_CLOSE - This flag is passed when the system is being
881 * unmounted. We should sync and invalidate everything.
882 * SYNC_FSDATA - This indicates that the caller would like to make
883 * sure the superblock is safe on disk. We can ensure
884 * this by simply making sure the log gets flushed
885 * if SYNC_BDFLUSH is set, and by actually writing it
896 xfs_mount_t *mp = XFS_BHVTOM(bdp);
898 if (unlikely(flags == SYNC_QUIESCE))
899 return xfs_quiesce_fs(mp);
901 return xfs_syncsub(mp, flags, 0, NULL);
905 * xfs sync routine for internal use
907 * This routine supports all of the flags defined for the generic VFS_SYNC
908 * interface as explained above under xfs_sync. In the interests of not
909 * changing interfaces within the 6.5 family, additional internally-
910 * required functions are specified within a separate xflags parameter,
911 * only available by calling this routine.
921 xfs_inode_t *ip = NULL;
922 xfs_inode_t *ip_next;
929 uint base_lock_flags;
930 boolean_t mount_locked;
931 boolean_t vnode_refed;
934 xfs_iptr_t *ipointer;
936 boolean_t ipointer_in = B_FALSE;
938 #define IPOINTER_SET ipointer_in = B_TRUE
939 #define IPOINTER_CLR ipointer_in = B_FALSE
946 /* Insert a marker record into the inode list after inode ip. The list
947 * must be locked when this is called. After the call the list will no
950 #define IPOINTER_INSERT(ip, mp) { \
951 ASSERT(ipointer_in == B_FALSE); \
952 ipointer->ip_mnext = ip->i_mnext; \
953 ipointer->ip_mprev = ip; \
954 ip->i_mnext = (xfs_inode_t *)ipointer; \
955 ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \
957 XFS_MOUNT_IUNLOCK(mp); \
958 mount_locked = B_FALSE; \
962 /* Remove the marker from the inode list. If the marker was the only item
963 * in the list then there are no remaining inodes and we should zero out
964 * the whole list. If we are the current head of the list then move the head
967 #define IPOINTER_REMOVE(ip, mp) { \
968 ASSERT(ipointer_in == B_TRUE); \
969 if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \
970 ip = ipointer->ip_mnext; \
971 ip->i_mprev = ipointer->ip_mprev; \
972 ipointer->ip_mprev->i_mnext = ip; \
973 if (mp->m_inodes == (xfs_inode_t *)ipointer) { \
977 ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \
978 mp->m_inodes = NULL; \
984 #define XFS_PREEMPT_MASK 0x7f
988 if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)
994 /* Allocate a reference marker */
995 ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP);
997 fflag = XFS_B_ASYNC; /* default is don't wait */
998 if (flags & (SYNC_BDFLUSH | SYNC_DELWRI))
999 fflag = XFS_B_DELWRI;
1000 if (flags & SYNC_WAIT)
1001 fflag = 0; /* synchronous overrides all */
1003 base_lock_flags = XFS_ILOCK_SHARED;
1004 if (flags & (SYNC_DELWRI | SYNC_CLOSE)) {
1006 * We need the I/O lock if we're going to call any of
1007 * the flush/inval routines.
1009 base_lock_flags |= XFS_IOLOCK_SHARED;
1012 XFS_MOUNT_ILOCK(mp);
1016 mount_locked = B_TRUE;
1017 vnode_refed = B_FALSE;
1022 ASSERT(ipointer_in == B_FALSE);
1023 ASSERT(vnode_refed == B_FALSE);
1025 lock_flags = base_lock_flags;
1028 * There were no inodes in the list, just break out
1036 * We found another sync thread marker - skip it
1038 if (ip->i_mount == NULL) {
1043 vp = XFS_ITOV_NULL(ip);
1046 * If the vnode is gone then this is being torn down,
1047 * call reclaim if it is flushed, else let regular flush
1048 * code deal with it later in the loop.
1052 /* Skip ones already in reclaim */
1053 if (ip->i_flags & XFS_IRECLAIM) {
1057 if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
1059 } else if ((xfs_ipincount(ip) == 0) &&
1060 xfs_iflock_nowait(ip)) {
1061 IPOINTER_INSERT(ip, mp);
1063 xfs_finish_reclaim(ip, 1,
1064 XFS_IFLUSH_DELWRI_ELSE_ASYNC);
1066 XFS_MOUNT_ILOCK(mp);
1067 mount_locked = B_TRUE;
1068 IPOINTER_REMOVE(ip, mp);
1070 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1081 if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
1082 XFS_MOUNT_IUNLOCK(mp);
1083 kmem_free(ipointer, sizeof(xfs_iptr_t));
1088 * If this is just vfs_sync() or pflushd() calling
1089 * then we can skip inodes for which it looks like
1090 * there is nothing to do. Since we don't have the
1091 * inode locked this is racy, but these are periodic
1092 * calls so it doesn't matter. For the others we want
1093 * to know for sure, so we at least try to lock them.
1095 if (flags & SYNC_BDFLUSH) {
1096 if (((ip->i_itemp == NULL) ||
1097 !(ip->i_itemp->ili_format.ilf_fields &
1099 (ip->i_update_core == 0)) {
1106 * Try to lock without sleeping. We're out of order with
1107 * the inode list lock here, so if we fail we need to drop
1108 * the mount lock and try again. If we're called from
1109 * bdflush() here, then don't bother.
1111 * The inode lock here actually coordinates with the
1112 * almost spurious inode lock in xfs_ireclaim() to prevent
1113 * the vnode we handle here without a reference from
1114 * being freed while we reference it. If we lock the inode
1115 * while it's on the mount list here, then the spurious inode
1116 * lock in xfs_ireclaim() after the inode is pulled from
1117 * the mount list will sleep until we release it here.
1118 * This keeps the vnode from being freed while we reference
1121 if (xfs_ilock_nowait(ip, lock_flags) == 0) {
1122 if ((flags & SYNC_BDFLUSH) || (vp == NULL)) {
1133 IPOINTER_INSERT(ip, mp);
1134 xfs_ilock(ip, lock_flags);
1136 ASSERT(vp == XFS_ITOV(ip));
1137 ASSERT(ip->i_mount == mp);
1139 vnode_refed = B_TRUE;
1142 /* From here on in the loop we may have a marker record
1143 * in the inode list.
1146 if ((flags & SYNC_CLOSE) && (vp != NULL)) {
1148 * This is the shutdown case. We just need to
1149 * flush and invalidate all the pages associated
1150 * with the inode. Drop the inode lock since
1151 * we can't hold it across calls to the buffer
1154 * We don't set the VREMAPPING bit in the vnode
1155 * here, because we don't hold the vnode lock
1156 * exclusively. It doesn't really matter, though,
1157 * because we only come here when we're shutting
1160 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1162 if (XFS_FORCED_SHUTDOWN(mp)) {
1163 VOP_TOSS_PAGES(vp, 0, -1, FI_REMAPF);
1165 VOP_FLUSHINVAL_PAGES(vp, 0, -1, FI_REMAPF);
1168 xfs_ilock(ip, XFS_ILOCK_SHARED);
1170 } else if ((flags & SYNC_DELWRI) && (vp != NULL)) {
1172 /* We need to have dropped the lock here,
1173 * so insert a marker if we have not already
1177 IPOINTER_INSERT(ip, mp);
1181 * Drop the inode lock since we can't hold it
1182 * across calls to the buffer cache.
1184 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1185 VOP_FLUSH_PAGES(vp, (xfs_off_t)0, -1,
1186 fflag, FI_NONE, error);
1187 xfs_ilock(ip, XFS_ILOCK_SHARED);
1192 if (flags & SYNC_BDFLUSH) {
1193 if ((flags & SYNC_ATTR) &&
1194 ((ip->i_update_core) ||
1195 ((ip->i_itemp != NULL) &&
1196 (ip->i_itemp->ili_format.ilf_fields != 0)))) {
1198 /* Insert marker and drop lock if not already
1202 IPOINTER_INSERT(ip, mp);
1206 * We don't want the periodic flushing of the
1207 * inodes by vfs_sync() to interfere with
1208 * I/O to the file, especially read I/O
1209 * where it is only the access time stamp
1210 * that is being flushed out. To prevent
1211 * long periods where we have both inode
1212 * locks held shared here while reading the
1213 * inode's buffer in from disk, we drop the
1214 * inode lock while reading in the inode
1215 * buffer. We have to release the buffer
1216 * and reacquire the inode lock so that they
1217 * are acquired in the proper order (inode
1218 * locks first). The buffer will go at the
1219 * end of the lru chain, though, so we can
1220 * expect it to still be there when we go
1221 * for it again in xfs_iflush().
1223 if ((xfs_ipincount(ip) == 0) &&
1224 xfs_iflock_nowait(ip)) {
1227 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1229 error = xfs_itobp(mp, NULL, ip,
1234 /* Bailing out, remove the
1235 * marker and free it.
1237 XFS_MOUNT_ILOCK(mp);
1239 IPOINTER_REMOVE(ip, mp);
1241 XFS_MOUNT_IUNLOCK(mp);
1243 ASSERT(!(lock_flags &
1244 XFS_IOLOCK_SHARED));
1247 sizeof(xfs_iptr_t));
1252 * Since we dropped the inode lock,
1253 * the inode may have been reclaimed.
1254 * Therefore, we reacquire the mount
1255 * lock and check to see if we were the
1256 * inode reclaimed. If this happened
1257 * then the ipointer marker will no
1258 * longer point back at us. In this
1259 * case, move ip along to the inode
1260 * after the marker, remove the marker
1263 XFS_MOUNT_ILOCK(mp);
1264 mount_locked = B_TRUE;
1266 if (ip != ipointer->ip_mprev) {
1267 IPOINTER_REMOVE(ip, mp);
1269 ASSERT(!vnode_refed);
1270 ASSERT(!(lock_flags &
1271 XFS_IOLOCK_SHARED));
1275 ASSERT(ip->i_mount == mp);
1277 if (xfs_ilock_nowait(ip,
1278 XFS_ILOCK_SHARED) == 0) {
1279 ASSERT(ip->i_mount == mp);
1281 * We failed to reacquire
1282 * the inode lock without
1283 * sleeping, so just skip
1284 * the inode for now. We
1285 * clear the ILOCK bit from
1286 * the lock_flags so that we
1287 * won't try to drop a lock
1288 * we don't hold below.
1290 lock_flags &= ~XFS_ILOCK_SHARED;
1291 IPOINTER_REMOVE(ip_next, mp);
1292 } else if ((xfs_ipincount(ip) == 0) &&
1293 xfs_iflock_nowait(ip)) {
1294 ASSERT(ip->i_mount == mp);
1296 * Since this is vfs_sync()
1297 * calling we only flush the
1298 * inode out if we can lock
1299 * it without sleeping and
1300 * it is not pinned. Drop
1301 * the mount lock here so
1302 * that we don't hold it for
1303 * too long. We already have
1304 * a marker in the list here.
1306 XFS_MOUNT_IUNLOCK(mp);
1307 mount_locked = B_FALSE;
1308 error = xfs_iflush(ip,
1311 ASSERT(ip->i_mount == mp);
1312 IPOINTER_REMOVE(ip_next, mp);
1319 if ((flags & SYNC_ATTR) &&
1320 ((ip->i_update_core) ||
1321 ((ip->i_itemp != NULL) &&
1322 (ip->i_itemp->ili_format.ilf_fields != 0)))) {
1324 IPOINTER_INSERT(ip, mp);
1327 if (flags & SYNC_WAIT) {
1329 error = xfs_iflush(ip,
1333 * If we can't acquire the flush
1334 * lock, then the inode is already
1335 * being flushed so don't bother
1336 * waiting. If we can lock it then
1337 * do a delwri flush so we can
1338 * combine multiple inode flushes
1339 * in each disk write.
1341 if (xfs_iflock_nowait(ip)) {
1342 error = xfs_iflush(ip,
1351 if (lock_flags != 0) {
1352 xfs_iunlock(ip, lock_flags);
1357 * If we had to take a reference on the vnode
1358 * above, then wait until after we've unlocked
1359 * the inode to release the reference. This is
1360 * because we can be already holding the inode
1361 * lock when VN_RELE() calls xfs_inactive().
1363 * Make sure to drop the mount lock before calling
1364 * VN_RELE() so that we don't trip over ourselves if
1365 * we have to go for the mount lock again in the
1369 IPOINTER_INSERT(ip, mp);
1374 vnode_refed = B_FALSE;
1382 * bail out if the filesystem is corrupted.
1384 if (error == EFSCORRUPTED) {
1385 if (!mount_locked) {
1386 XFS_MOUNT_ILOCK(mp);
1387 IPOINTER_REMOVE(ip, mp);
1389 XFS_MOUNT_IUNLOCK(mp);
1390 ASSERT(ipointer_in == B_FALSE);
1391 kmem_free(ipointer, sizeof(xfs_iptr_t));
1392 return XFS_ERROR(error);
1395 /* Let other threads have a chance at the mount lock
1396 * if we have looped many times without dropping the
1399 if ((++preempt & XFS_PREEMPT_MASK) == 0) {
1401 IPOINTER_INSERT(ip, mp);
1405 if (mount_locked == B_FALSE) {
1406 XFS_MOUNT_ILOCK(mp);
1407 mount_locked = B_TRUE;
1408 IPOINTER_REMOVE(ip, mp);
1412 ASSERT(ipointer_in == B_FALSE);
1415 } while (ip != mp->m_inodes);
1417 XFS_MOUNT_IUNLOCK(mp);
1419 ASSERT(ipointer_in == B_FALSE);
1421 kmem_free(ipointer, sizeof(xfs_iptr_t));
1422 return XFS_ERROR(last_error);
1426 * xfs sync routine for internal use
1428 * This routine supports all of the flags defined for the generic VFS_SYNC
1429 * interface as explained above under xfs_sync. In the interests of not
1430 * changing interfaces within the 6.5 family, additional internally-
1431 * required functions are specified within a separate xflags parameter,
1432 * only available by calling this routine.
1444 uint log_flags = XFS_LOG_FORCE;
1446 xfs_buf_log_item_t *bip;
1449 * Sync out the log. This ensures that the log is periodically
1450 * flushed even if there is not enough activity to fill it up.
1452 if (flags & SYNC_WAIT)
1453 log_flags |= XFS_LOG_SYNC;
1455 xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
1457 if (flags & (SYNC_ATTR|SYNC_DELWRI)) {
1458 if (flags & SYNC_BDFLUSH)
1459 xfs_finish_reclaim_all(mp, 1);
1461 error = xfs_sync_inodes(mp, flags, xflags, bypassed);
1465 * Flushing out dirty data above probably generated more
1466 * log activity, so if this isn't vfs_sync() then flush
1469 if (flags & SYNC_DELWRI) {
1470 xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
1473 if (flags & SYNC_FSDATA) {
1475 * If this is vfs_sync() then only sync the superblock
1476 * if we can lock it without sleeping and it is not pinned.
1478 if (flags & SYNC_BDFLUSH) {
1479 bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
1481 bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*);
1482 if ((bip != NULL) &&
1483 xfs_buf_item_dirty(bip)) {
1484 if (!(XFS_BUF_ISPINNED(bp))) {
1486 error = xfs_bwrite(mp, bp);
1495 bp = xfs_getsb(mp, 0);
1497 * If the buffer is pinned then push on the log so
1498 * we won't get stuck waiting in the write for
1499 * someone, maybe ourselves, to flush the log.
1500 * Even though we just pushed the log above, we
1501 * did not have the superblock buffer locked at
1502 * that point so it can become pinned in between
1505 if (XFS_BUF_ISPINNED(bp))
1506 xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
1507 if (flags & SYNC_WAIT)
1508 XFS_BUF_UNASYNC(bp);
1511 error = xfs_bwrite(mp, bp);
1519 * If this is the periodic sync, then kick some entries out of
1520 * the reference cache. This ensures that idle entries are
1521 * eventually kicked out of the cache.
1523 if (flags & SYNC_REFCACHE) {
1524 if (flags & SYNC_WAIT)
1525 xfs_refcache_purge_mp(mp);
1527 xfs_refcache_purge_some(mp);
1531 * Now check to see if the log needs a "dummy" transaction.
1534 if (!(flags & SYNC_REMOUNT) && xfs_log_need_covered(mp)) {
1539 * Put a dummy transaction in the log to tell
1540 * recovery that all others are OK.
1542 tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
1543 if ((error = xfs_trans_reserve(tp, 0,
1544 XFS_ICHANGE_LOG_RES(mp),
1546 xfs_trans_cancel(tp, 0);
1551 xfs_ilock(ip, XFS_ILOCK_EXCL);
1553 xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
1554 xfs_trans_ihold(tp, ip);
1555 xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
1556 error = xfs_trans_commit(tp, 0, NULL);
1557 xfs_iunlock(ip, XFS_ILOCK_EXCL);
1558 xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
1562 * When shutting down, we need to insure that the AIL is pushed
1563 * to disk or the filesystem can appear corrupt from the PROM.
1565 if ((flags & (SYNC_CLOSE|SYNC_WAIT)) == (SYNC_CLOSE|SYNC_WAIT)) {
1566 XFS_bflush(mp->m_ddev_targp);
1567 if (mp->m_rtdev_targp) {
1568 XFS_bflush(mp->m_rtdev_targp);
1572 return XFS_ERROR(last_error);
1576 * xfs_vget - called by DMAPI and NFSD to get vnode from file handle
1584 xfs_mount_t *mp = XFS_BHVTOM(bdp);
1585 xfs_fid_t *xfid = (struct xfs_fid *)fidp;
1592 * Invalid. Since handles can be created in user space and passed in
1593 * via gethandle(), this is not cause for a panic.
1595 if (xfid->xfs_fid_len != sizeof(*xfid) - sizeof(xfid->xfs_fid_len))
1596 return XFS_ERROR(EINVAL);
1598 ino = xfid->xfs_fid_ino;
1599 igen = xfid->xfs_fid_gen;
1602 * NFS can sometimes send requests for ino 0. Fail them gracefully.
1605 return XFS_ERROR(ESTALE);
1607 error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
1615 return XFS_ERROR(EIO);
1618 if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {
1619 xfs_iput_new(ip, XFS_ILOCK_SHARED);
1621 return XFS_ERROR(ENOENT);
1624 *vpp = XFS_ITOV(ip);
1625 xfs_iunlock(ip, XFS_ILOCK_SHARED);
1630 #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
1631 #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
1632 #define MNTOPT_LOGDEV "logdev" /* log device */
1633 #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
1634 #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
1635 #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
1636 #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
1637 #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
1638 #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
1639 #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
1640 #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
1641 #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
1642 #define MNTOPT_MTPT "mtpt" /* filesystem mount point */
1643 #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
1644 #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
1645 #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
1646 #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
1647 #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
1648 #define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */
1649 #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
1650 #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
1651 * unwritten extent conversion */
1652 #define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
1653 #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
1654 #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
1655 #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
1656 #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
1657 #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
1658 #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
1660 #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
1661 #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
1662 #define MNTOPT_TAGXID "tagxid" /* context xid tagging for inodes */
1664 STATIC unsigned long
1665 suffix_strtoul(const char *cp, char **endp, unsigned int base)
1667 int last, shift_left_factor = 0;
1668 char *value = (char *)cp;
1670 last = strlen(value) - 1;
1671 if (value[last] == 'K' || value[last] == 'k') {
1672 shift_left_factor = 10;
1675 if (value[last] == 'M' || value[last] == 'm') {
1676 shift_left_factor = 20;
1679 if (value[last] == 'G' || value[last] == 'g') {
1680 shift_left_factor = 30;
1684 return simple_strtoul(cp, endp, base) << shift_left_factor;
1689 struct bhv_desc *bhv,
1691 struct xfs_mount_args *args,
1694 struct vfs *vfsp = bhvtovfs(bhv);
1695 char *this_char, *value, *eov;
1696 int dsunit, dswidth, vol_dsunit, vol_dswidth;
1699 args->flags |= XFSMNT_IDELETE;
1700 args->flags |= XFSMNT_BARRIER;
1701 args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
1706 iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0;
1708 while ((this_char = strsep(&options, ",")) != NULL) {
1711 if ((value = strchr(this_char, '=')) != NULL)
1714 if (!strcmp(this_char, MNTOPT_LOGBUFS)) {
1715 if (!value || !*value) {
1716 printk("XFS: %s option requires an argument\n",
1720 args->logbufs = simple_strtoul(value, &eov, 10);
1721 } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) {
1722 if (!value || !*value) {
1723 printk("XFS: %s option requires an argument\n",
1727 args->logbufsize = suffix_strtoul(value, &eov, 10);
1728 } else if (!strcmp(this_char, MNTOPT_LOGDEV)) {
1729 if (!value || !*value) {
1730 printk("XFS: %s option requires an argument\n",
1734 strncpy(args->logname, value, MAXNAMELEN);
1735 } else if (!strcmp(this_char, MNTOPT_MTPT)) {
1736 if (!value || !*value) {
1737 printk("XFS: %s option requires an argument\n",
1741 strncpy(args->mtpt, value, MAXNAMELEN);
1742 } else if (!strcmp(this_char, MNTOPT_RTDEV)) {
1743 if (!value || !*value) {
1744 printk("XFS: %s option requires an argument\n",
1748 strncpy(args->rtname, value, MAXNAMELEN);
1749 } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) {
1750 if (!value || !*value) {
1751 printk("XFS: %s option requires an argument\n",
1755 iosize = simple_strtoul(value, &eov, 10);
1756 args->flags |= XFSMNT_IOSIZE;
1757 args->iosizelog = (uint8_t) iosize;
1758 } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) {
1759 if (!value || !*value) {
1760 printk("XFS: %s option requires an argument\n",
1764 iosize = suffix_strtoul(value, &eov, 10);
1765 args->flags |= XFSMNT_IOSIZE;
1766 args->iosizelog = ffs(iosize) - 1;
1767 } else if (!strcmp(this_char, MNTOPT_IHASHSIZE)) {
1768 if (!value || !*value) {
1769 printk("XFS: %s option requires an argument\n",
1773 args->flags |= XFSMNT_IHASHSIZE;
1774 args->ihashsize = simple_strtoul(value, &eov, 10);
1775 } else if (!strcmp(this_char, MNTOPT_GRPID) ||
1776 !strcmp(this_char, MNTOPT_BSDGROUPS)) {
1777 vfsp->vfs_flag |= VFS_GRPID;
1778 } else if (!strcmp(this_char, MNTOPT_NOGRPID) ||
1779 !strcmp(this_char, MNTOPT_SYSVGROUPS)) {
1780 vfsp->vfs_flag &= ~VFS_GRPID;
1781 } else if (!strcmp(this_char, MNTOPT_WSYNC)) {
1782 args->flags |= XFSMNT_WSYNC;
1783 } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) {
1784 args->flags |= XFSMNT_OSYNCISOSYNC;
1785 } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) {
1786 args->flags |= XFSMNT_NORECOVERY;
1787 } else if (!strcmp(this_char, MNTOPT_INO64)) {
1788 args->flags |= XFSMNT_INO64;
1790 printk("XFS: %s option not allowed on this system\n",
1794 } else if (!strcmp(this_char, MNTOPT_NOALIGN)) {
1795 args->flags |= XFSMNT_NOALIGN;
1796 } else if (!strcmp(this_char, MNTOPT_SWALLOC)) {
1797 args->flags |= XFSMNT_SWALLOC;
1798 } else if (!strcmp(this_char, MNTOPT_SUNIT)) {
1799 if (!value || !*value) {
1800 printk("XFS: %s option requires an argument\n",
1804 dsunit = simple_strtoul(value, &eov, 10);
1805 } else if (!strcmp(this_char, MNTOPT_SWIDTH)) {
1806 if (!value || !*value) {
1807 printk("XFS: %s option requires an argument\n",
1811 dswidth = simple_strtoul(value, &eov, 10);
1812 } else if (!strcmp(this_char, MNTOPT_64BITINODE)) {
1813 args->flags &= ~XFSMNT_32BITINODES;
1815 printk("XFS: %s option not allowed on this system\n",
1819 } else if (!strcmp(this_char, MNTOPT_NOUUID)) {
1820 args->flags |= XFSMNT_NOUUID;
1821 } else if (!strcmp(this_char, MNTOPT_BARRIER)) {
1822 args->flags |= XFSMNT_BARRIER;
1823 } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) {
1824 args->flags &= ~XFSMNT_BARRIER;
1825 } else if (!strcmp(this_char, MNTOPT_IKEEP)) {
1826 args->flags &= ~XFSMNT_IDELETE;
1827 } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
1828 args->flags |= XFSMNT_IDELETE;
1829 } else if (!strcmp(this_char, MNTOPT_LARGEIO)) {
1830 args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE;
1831 } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
1832 args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
1833 } else if (!strcmp(this_char, MNTOPT_ATTR2)) {
1834 args->flags |= XFSMNT_ATTR2;
1835 } else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
1836 args->flags &= ~XFSMNT_ATTR2;
1837 #ifndef CONFIG_INOXID_NONE
1838 } else if (!strcmp(this_char, MNTOPT_TAGXID)) {
1839 args->flags2 |= XFSMNT2_TAGXID;
1841 } else if (!strcmp(this_char, "osyncisdsync")) {
1842 /* no-op, this is now the default */
1843 printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
1844 } else if (!strcmp(this_char, "irixsgid")) {
1845 printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
1847 printk("XFS: unknown mount option [%s].\n", this_char);
1852 if (args->flags & XFSMNT_NORECOVERY) {
1853 if ((vfsp->vfs_flag & VFS_RDONLY) == 0) {
1854 printk("XFS: no-recovery mounts must be read-only.\n");
1859 if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) {
1861 "XFS: sunit and swidth options incompatible with the noalign option\n");
1865 if ((dsunit && !dswidth) || (!dsunit && dswidth)) {
1866 printk("XFS: sunit and swidth must be specified together\n");
1870 if (dsunit && (dswidth % dsunit != 0)) {
1872 "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n",
1877 if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
1879 args->sunit = dsunit;
1880 args->flags |= XFSMNT_RETERR;
1882 args->sunit = vol_dsunit;
1884 dswidth ? (args->swidth = dswidth) :
1885 (args->swidth = vol_dswidth);
1887 args->sunit = args->swidth = 0;
1891 if (args->flags & XFSMNT_32BITINODES)
1892 vfsp->vfs_flag |= VFS_32BITINODES;
1894 args->flags |= XFSMNT_FLAGS2;
1900 struct bhv_desc *bhv,
1903 static struct proc_xfs_info {
1907 /* the few simple ones we can get from the mount struct */
1908 { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
1909 { XFS_MOUNT_INO64, "," MNTOPT_INO64 },
1910 { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
1911 { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
1912 { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
1913 { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
1914 { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
1917 struct proc_xfs_info *xfs_infop;
1918 struct xfs_mount *mp = XFS_BHVTOM(bhv);
1919 struct vfs *vfsp = XFS_MTOVFS(mp);
1921 for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) {
1922 if (mp->m_flags & xfs_infop->flag)
1923 seq_puts(m, xfs_infop->str);
1926 if (mp->m_flags & XFS_MOUNT_IHASHSIZE)
1927 seq_printf(m, "," MNTOPT_IHASHSIZE "=%d", mp->m_ihsize);
1929 if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
1930 seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk",
1931 (int)(1 << mp->m_writeio_log) >> 10);
1933 if (mp->m_logbufs > 0)
1934 seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
1935 if (mp->m_logbsize > 0)
1936 seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10);
1939 seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
1941 seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
1943 if (mp->m_dalign > 0)
1944 seq_printf(m, "," MNTOPT_SUNIT "=%d",
1945 (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
1946 if (mp->m_swidth > 0)
1947 seq_printf(m, "," MNTOPT_SWIDTH "=%d",
1948 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
1950 if (!(mp->m_flags & XFS_MOUNT_IDELETE))
1951 seq_printf(m, "," MNTOPT_IKEEP);
1952 if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE))
1953 seq_printf(m, "," MNTOPT_LARGEIO);
1955 if (!(vfsp->vfs_flag & VFS_32BITINODES))
1956 seq_printf(m, "," MNTOPT_64BITINODE);
1957 if (vfsp->vfs_flag & VFS_GRPID)
1958 seq_printf(m, "," MNTOPT_GRPID);
1967 xfs_mount_t *mp = XFS_BHVTOM(bdp);
1969 while (atomic_read(&mp->m_active_trans) > 0)
1972 /* Push the superblock and write an unmount record */
1973 xfs_log_unmount_write(mp);
1974 xfs_unmountfs_writesb(mp);
1975 xfs_fs_log_dummy(mp);
1979 vfsops_t xfs_vfsops = {
1980 BHV_IDENTITY_INIT(VFS_BHV_XFS,VFS_POSITION_XFS),
1981 .vfs_parseargs = xfs_parseargs,
1982 .vfs_showargs = xfs_showargs,
1983 .vfs_mount = xfs_mount,
1984 .vfs_unmount = xfs_unmount,
1985 .vfs_mntupdate = xfs_mntupdate,
1986 .vfs_root = xfs_root,
1987 .vfs_statvfs = xfs_statvfs,
1988 .vfs_sync = xfs_sync,
1989 .vfs_vget = xfs_vget,
1990 .vfs_dmapiops = (vfs_dmapiops_t)fs_nosys,
1991 .vfs_quotactl = (vfs_quotactl_t)fs_nosys,
1992 .vfs_init_vnode = xfs_initialize_vnode,
1993 .vfs_force_shutdown = xfs_do_force_shutdown,
1994 .vfs_freeze = xfs_freeze,