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"
57 STATIC
int xfs_sync(bhv_desc_t
*, int, cred_t
*);
62 extern kmem_zone_t
*xfs_bmap_free_item_zone
;
63 extern kmem_zone_t
*xfs_btree_cur_zone
;
64 extern kmem_zone_t
*xfs_trans_zone
;
65 extern kmem_zone_t
*xfs_buf_item_zone
;
66 extern kmem_zone_t
*xfs_dabuf_zone
;
67 #ifdef XFS_DABUF_DEBUG
68 extern lock_t xfs_dabuf_global_lock
;
69 spinlock_init(&xfs_dabuf_global_lock
, "xfsda");
73 * Initialize all of the zone allocators we use.
75 xfs_bmap_free_item_zone
= kmem_zone_init(sizeof(xfs_bmap_free_item_t
),
76 "xfs_bmap_free_item");
77 xfs_btree_cur_zone
= kmem_zone_init(sizeof(xfs_btree_cur_t
),
79 xfs_inode_zone
= kmem_zone_init(sizeof(xfs_inode_t
), "xfs_inode");
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");
86 * The size of the zone allocated buf log item is the maximum
87 * size possible under XFS. This wastes a little bit of memory,
88 * but it is much faster.
91 kmem_zone_init((sizeof(xfs_buf_log_item_t
) +
92 (((XFS_MAX_BLOCKSIZE
/ XFS_BLI_CHUNK
) /
93 NBWORD
) * sizeof(int))),
95 xfs_efd_zone
= kmem_zone_init((sizeof(xfs_efd_log_item_t
) +
96 ((XFS_EFD_MAX_FAST_EXTENTS
- 1) * sizeof(xfs_extent_t
))),
98 xfs_efi_zone
= kmem_zone_init((sizeof(xfs_efi_log_item_t
) +
99 ((XFS_EFI_MAX_FAST_EXTENTS
- 1) * sizeof(xfs_extent_t
))),
101 xfs_ifork_zone
= kmem_zone_init(sizeof(xfs_ifork_t
), "xfs_ifork");
102 xfs_ili_zone
= kmem_zone_init(sizeof(xfs_inode_log_item_t
), "xfs_ili");
103 xfs_chashlist_zone
= kmem_zone_init(sizeof(xfs_chashlist_t
),
105 xfs_acl_zone_init(xfs_acl_zone
, "xfs_acl");
108 * Allocate global trace buffers.
110 #ifdef XFS_ALLOC_TRACE
111 xfs_alloc_trace_buf
= ktrace_alloc(XFS_ALLOC_TRACE_SIZE
, KM_SLEEP
);
113 #ifdef XFS_BMAP_TRACE
114 xfs_bmap_trace_buf
= ktrace_alloc(XFS_BMAP_TRACE_SIZE
, KM_SLEEP
);
116 #ifdef XFS_BMBT_TRACE
117 xfs_bmbt_trace_buf
= ktrace_alloc(XFS_BMBT_TRACE_SIZE
, KM_SLEEP
);
120 xfs_dir_trace_buf
= ktrace_alloc(XFS_DIR_TRACE_SIZE
, KM_SLEEP
);
122 #ifdef XFS_ATTR_TRACE
123 xfs_attr_trace_buf
= ktrace_alloc(XFS_ATTR_TRACE_SIZE
, KM_SLEEP
);
125 #ifdef XFS_DIR2_TRACE
126 xfs_dir2_trace_buf
= ktrace_alloc(XFS_DIR2_GTRACE_SIZE
, KM_SLEEP
);
131 #if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
132 xfs_error_test_init();
133 #endif /* DEBUG || INDUCE_IO_ERROR */
136 xfs_sysctl_register();
143 extern kmem_zone_t
*xfs_bmap_free_item_zone
;
144 extern kmem_zone_t
*xfs_btree_cur_zone
;
145 extern kmem_zone_t
*xfs_inode_zone
;
146 extern kmem_zone_t
*xfs_trans_zone
;
147 extern kmem_zone_t
*xfs_da_state_zone
;
148 extern kmem_zone_t
*xfs_dabuf_zone
;
149 extern kmem_zone_t
*xfs_efd_zone
;
150 extern kmem_zone_t
*xfs_efi_zone
;
151 extern kmem_zone_t
*xfs_buf_item_zone
;
152 extern kmem_zone_t
*xfs_chashlist_zone
;
154 xfs_cleanup_procfs();
155 xfs_sysctl_unregister();
156 xfs_refcache_destroy();
157 xfs_acl_zone_destroy(xfs_acl_zone
);
159 #ifdef XFS_DIR2_TRACE
160 ktrace_free(xfs_dir2_trace_buf
);
162 #ifdef XFS_ATTR_TRACE
163 ktrace_free(xfs_attr_trace_buf
);
166 ktrace_free(xfs_dir_trace_buf
);
168 #ifdef XFS_BMBT_TRACE
169 ktrace_free(xfs_bmbt_trace_buf
);
171 #ifdef XFS_BMAP_TRACE
172 ktrace_free(xfs_bmap_trace_buf
);
174 #ifdef XFS_ALLOC_TRACE
175 ktrace_free(xfs_alloc_trace_buf
);
178 kmem_cache_destroy(xfs_bmap_free_item_zone
);
179 kmem_cache_destroy(xfs_btree_cur_zone
);
180 kmem_cache_destroy(xfs_inode_zone
);
181 kmem_cache_destroy(xfs_trans_zone
);
182 kmem_cache_destroy(xfs_da_state_zone
);
183 kmem_cache_destroy(xfs_dabuf_zone
);
184 kmem_cache_destroy(xfs_buf_item_zone
);
185 kmem_cache_destroy(xfs_efd_zone
);
186 kmem_cache_destroy(xfs_efi_zone
);
187 kmem_cache_destroy(xfs_ifork_zone
);
188 kmem_cache_destroy(xfs_ili_zone
);
189 kmem_cache_destroy(xfs_chashlist_zone
);
195 * This function fills in xfs_mount_t fields based on mount args.
196 * Note: the superblock has _not_ yet been read in.
201 struct xfs_mount_args
*ap
,
202 struct xfs_mount
*mp
)
204 /* Values are in BBs */
205 if ((ap
->flags
& XFSMNT_NOALIGN
) != XFSMNT_NOALIGN
) {
207 * At this point the superblock has not been read
208 * in, therefore we do not know the block size.
209 * Before the mount call ends we will convert
212 mp
->m_dalign
= ap
->sunit
;
213 mp
->m_swidth
= ap
->swidth
;
216 if (ap
->logbufs
!= -1 &&
217 #if defined(DEBUG) || defined(XLOG_NOLOG)
220 (ap
->logbufs
< XLOG_MIN_ICLOGS
||
221 ap
->logbufs
> XLOG_MAX_ICLOGS
)) {
223 "XFS: invalid logbufs value: %d [not %d-%d]",
224 ap
->logbufs
, XLOG_MIN_ICLOGS
, XLOG_MAX_ICLOGS
);
225 return XFS_ERROR(EINVAL
);
227 mp
->m_logbufs
= ap
->logbufs
;
228 if (ap
->logbufsize
!= -1 &&
229 ap
->logbufsize
!= 16 * 1024 &&
230 ap
->logbufsize
!= 32 * 1024 &&
231 ap
->logbufsize
!= 64 * 1024 &&
232 ap
->logbufsize
!= 128 * 1024 &&
233 ap
->logbufsize
!= 256 * 1024) {
235 "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]",
237 return XFS_ERROR(EINVAL
);
239 mp
->m_ihsize
= ap
->ihashsize
;
240 mp
->m_logbsize
= ap
->logbufsize
;
241 mp
->m_fsname_len
= strlen(ap
->fsname
) + 1;
242 mp
->m_fsname
= kmem_alloc(mp
->m_fsname_len
, KM_SLEEP
);
243 strcpy(mp
->m_fsname
, ap
->fsname
);
245 mp
->m_rtname
= kmem_alloc(strlen(ap
->rtname
) + 1, KM_SLEEP
);
246 strcpy(mp
->m_rtname
, ap
->rtname
);
248 if (ap
->logname
[0]) {
249 mp
->m_logname
= kmem_alloc(strlen(ap
->logname
) + 1, KM_SLEEP
);
250 strcpy(mp
->m_logname
, ap
->logname
);
253 if (ap
->flags
& XFSMNT_WSYNC
)
254 mp
->m_flags
|= XFS_MOUNT_WSYNC
;
256 if (ap
->flags
& XFSMNT_INO64
) {
257 mp
->m_flags
|= XFS_MOUNT_INO64
;
258 mp
->m_inoadd
= XFS_INO64_OFFSET
;
261 if (ap
->flags
& XFSMNT_NOATIME
)
262 mp
->m_flags
|= XFS_MOUNT_NOATIME
;
263 if (ap
->flags
& XFSMNT_RETERR
)
264 mp
->m_flags
|= XFS_MOUNT_RETERR
;
265 if (ap
->flags
& XFSMNT_NOALIGN
)
266 mp
->m_flags
|= XFS_MOUNT_NOALIGN
;
267 if (ap
->flags
& XFSMNT_SWALLOC
)
268 mp
->m_flags
|= XFS_MOUNT_SWALLOC
;
269 if (ap
->flags
& XFSMNT_OSYNCISOSYNC
)
270 mp
->m_flags
|= XFS_MOUNT_OSYNCISOSYNC
;
271 if (ap
->flags
& XFSMNT_32BITINODES
)
272 mp
->m_flags
|= XFS_MOUNT_32BITINODES
;
274 if (ap
->flags
& XFSMNT_IOSIZE
) {
275 if (ap
->iosizelog
> XFS_MAX_IO_LOG
||
276 ap
->iosizelog
< XFS_MIN_IO_LOG
) {
278 "XFS: invalid log iosize: %d [not %d-%d]",
279 ap
->iosizelog
, XFS_MIN_IO_LOG
,
281 return XFS_ERROR(EINVAL
);
284 mp
->m_flags
|= XFS_MOUNT_DFLT_IOSIZE
;
285 mp
->m_readio_log
= mp
->m_writeio_log
= ap
->iosizelog
;
288 if (ap
->flags
& XFSMNT_IHASHSIZE
)
289 mp
->m_flags
|= XFS_MOUNT_IHASHSIZE
;
290 if (ap
->flags
& XFSMNT_IDELETE
)
291 mp
->m_flags
|= XFS_MOUNT_IDELETE
;
292 if (ap
->flags
& XFSMNT_DIRSYNC
)
293 mp
->m_flags
|= XFS_MOUNT_DIRSYNC
;
294 if (ap
->flags
& XFSMNT_COMPAT_ATTR
)
295 mp
->m_flags
|= XFS_MOUNT_COMPAT_ATTR
;
297 if (ap
->flags2
& XFSMNT2_COMPAT_IOSIZE
)
298 mp
->m_flags
|= XFS_MOUNT_COMPAT_IOSIZE
;
301 * no recovery flag requires a read-only mount
303 if (ap
->flags
& XFSMNT_NORECOVERY
) {
304 if (!(vfs
->vfs_flag
& VFS_RDONLY
)) {
306 "XFS: tried to mount a FS read-write without recovery!");
307 return XFS_ERROR(EINVAL
);
309 mp
->m_flags
|= XFS_MOUNT_NORECOVERY
;
312 if (ap
->flags
& XFSMNT_NOUUID
)
313 mp
->m_flags
|= XFS_MOUNT_NOUUID
;
314 if (ap
->flags
& XFSMNT_BARRIER
)
315 mp
->m_flags
|= XFS_MOUNT_BARRIER
;
321 * This function fills in xfs_mount_t fields based on mount args.
322 * Note: the superblock _has_ now been read in.
327 struct xfs_mount_args
*ap
,
328 struct xfs_mount
*mp
)
330 int ronly
= (vfs
->vfs_flag
& VFS_RDONLY
);
332 /* Fail a mount where the logbuf is smaller then the log stripe */
333 if (XFS_SB_VERSION_HASLOGV2(&mp
->m_sb
)) {
334 if ((ap
->logbufsize
== -1) &&
335 (mp
->m_sb
.sb_logsunit
> XLOG_BIG_RECORD_BSIZE
)) {
336 mp
->m_logbsize
= mp
->m_sb
.sb_logsunit
;
337 } else if (ap
->logbufsize
< mp
->m_sb
.sb_logsunit
) {
339 "XFS: logbuf size must be greater than or equal to log stripe size");
340 return XFS_ERROR(EINVAL
);
343 /* Fail a mount if the logbuf is larger than 32K */
344 if (ap
->logbufsize
> XLOG_BIG_RECORD_BSIZE
) {
346 "XFS: logbuf size for version 1 logs must be 16K or 32K");
347 return XFS_ERROR(EINVAL
);
352 * prohibit r/w mounts of read-only filesystems
354 if ((mp
->m_sb
.sb_flags
& XFS_SBF_READONLY
) && !ronly
) {
356 "XFS: cannot mount a read-only filesystem as read-write");
357 return XFS_ERROR(EROFS
);
361 * check for shared mount.
363 if (ap
->flags
& XFSMNT_SHARED
) {
364 if (!XFS_SB_VERSION_HASSHARED(&mp
->m_sb
))
365 return XFS_ERROR(EINVAL
);
368 * For IRIX 6.5, shared mounts must have the shared
369 * version bit set, have the persistent readonly
370 * field set, must be version 0 and can only be mounted
373 if (!ronly
|| !(mp
->m_sb
.sb_flags
& XFS_SBF_READONLY
) ||
374 (mp
->m_sb
.sb_shared_vn
!= 0))
375 return XFS_ERROR(EINVAL
);
377 mp
->m_flags
|= XFS_MOUNT_SHARED
;
380 * Shared XFS V0 can't deal with DMI. Return EINVAL.
382 if (mp
->m_sb
.sb_shared_vn
== 0 && (ap
->flags
& XFSMNT_DMAPI
))
383 return XFS_ERROR(EINVAL
);
386 if (XFS_SB_VERSION_HASATTR2(&mp
->m_sb
)) {
387 mp
->m_flags
&= ~XFS_MOUNT_COMPAT_ATTR
;
396 * The file system configurations are:
397 * (1) device (partition) with data and internal log
398 * (2) logical volume with data and log subvolumes.
399 * (3) logical volume with data, log, and realtime subvolumes.
401 * We only have to handle opening the log and realtime volumes here if
402 * they are present. The data subvolume has already been opened by
403 * get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev.
407 struct bhv_desc
*bhvp
,
408 struct xfs_mount_args
*args
,
411 struct vfs
*vfsp
= bhvtovfs(bhvp
);
413 struct xfs_mount
*mp
= XFS_BHVTOM(bhvp
);
414 struct block_device
*ddev
, *logdev
, *rtdev
;
415 int flags
= 0, error
;
417 ddev
= vfsp
->vfs_super
->s_bdev
;
418 logdev
= rtdev
= NULL
;
421 * Setup xfs_mount function vectors from available behaviors
423 p
= vfs_bhv_lookup(vfsp
, VFS_POSITION_DM
);
424 mp
->m_dm_ops
= p
? *(xfs_dmops_t
*) vfs_bhv_custom(p
) : xfs_dmcore_stub
;
425 p
= vfs_bhv_lookup(vfsp
, VFS_POSITION_QM
);
426 mp
->m_qm_ops
= p
? *(xfs_qmops_t
*) vfs_bhv_custom(p
) : xfs_qmcore_stub
;
427 p
= vfs_bhv_lookup(vfsp
, VFS_POSITION_IO
);
428 mp
->m_io_ops
= p
? *(xfs_ioops_t
*) vfs_bhv_custom(p
) : xfs_iocore_xfs
;
431 * Open real time and log devices - order is important.
433 if (args
->logname
[0]) {
434 error
= xfs_blkdev_get(mp
, args
->logname
, &logdev
);
438 if (args
->rtname
[0]) {
439 error
= xfs_blkdev_get(mp
, args
->rtname
, &rtdev
);
441 xfs_blkdev_put(logdev
);
445 if (rtdev
== ddev
|| rtdev
== logdev
) {
447 "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
448 xfs_blkdev_put(logdev
);
449 xfs_blkdev_put(rtdev
);
455 * Setup xfs_mount buffer target pointers
458 mp
->m_ddev_targp
= xfs_alloc_buftarg(ddev
, 0);
459 if (!mp
->m_ddev_targp
) {
460 xfs_blkdev_put(logdev
);
461 xfs_blkdev_put(rtdev
);
465 mp
->m_rtdev_targp
= xfs_alloc_buftarg(rtdev
, 1);
466 if (!mp
->m_rtdev_targp
)
469 mp
->m_logdev_targp
= (logdev
&& logdev
!= ddev
) ?
470 xfs_alloc_buftarg(logdev
, 1) : mp
->m_ddev_targp
;
471 if (!mp
->m_logdev_targp
)
475 * Setup flags based on mount(2) options and then the superblock
477 error
= xfs_start_flags(vfsp
, args
, mp
);
480 error
= xfs_readsb(mp
);
483 error
= xfs_finish_flags(vfsp
, args
, mp
);
488 * Setup xfs_mount buffer target pointers based on superblock
490 error
= xfs_setsize_buftarg(mp
->m_ddev_targp
, mp
->m_sb
.sb_blocksize
,
491 mp
->m_sb
.sb_sectsize
);
492 if (!error
&& logdev
&& logdev
!= ddev
) {
493 unsigned int log_sector_size
= BBSIZE
;
495 if (XFS_SB_VERSION_HASSECTOR(&mp
->m_sb
))
496 log_sector_size
= mp
->m_sb
.sb_logsectsize
;
497 error
= xfs_setsize_buftarg(mp
->m_logdev_targp
,
498 mp
->m_sb
.sb_blocksize
,
502 error
= xfs_setsize_buftarg(mp
->m_rtdev_targp
,
503 mp
->m_sb
.sb_blocksize
,
504 mp
->m_sb
.sb_sectsize
);
508 error
= XFS_IOINIT(vfsp
, args
, flags
);
512 if ((args
->flags
& XFSMNT_BARRIER
) &&
513 !(XFS_MTOVFS(mp
)->vfs_flag
& VFS_RDONLY
))
514 xfs_mountfs_check_barriers(mp
);
521 xfs_binval(mp
->m_ddev_targp
);
522 if (logdev
&& logdev
!= ddev
)
523 xfs_binval(mp
->m_logdev_targp
);
525 xfs_binval(mp
->m_rtdev_targp
);
527 xfs_unmountfs_close(mp
, credp
);
537 struct vfs
*vfsp
= bhvtovfs(bdp
);
538 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
541 int unmount_event_wanted
= 0;
542 int unmount_event_flags
= 0;
543 int xfs_unmountfs_needed
= 0;
549 if (vfsp
->vfs_flag
& VFS_DMI
) {
550 error
= XFS_SEND_PREUNMOUNT(mp
, vfsp
,
551 rvp
, DM_RIGHT_NULL
, rvp
, DM_RIGHT_NULL
,
553 (mp
->m_dmevmask
& (1<<DM_EVENT_PREUNMOUNT
))?
554 0:DM_FLAGS_UNWANTED
);
556 return XFS_ERROR(error
);
557 unmount_event_wanted
= 1;
558 unmount_event_flags
= (mp
->m_dmevmask
& (1<<DM_EVENT_UNMOUNT
))?
559 0 : DM_FLAGS_UNWANTED
;
563 * First blow any referenced inode from this file system
564 * out of the reference cache, and delete the timer.
566 xfs_refcache_purge_mp(mp
);
568 XFS_bflush(mp
->m_ddev_targp
);
569 error
= xfs_unmount_flush(mp
, 0);
573 ASSERT(vn_count(rvp
) == 1);
576 * Drop the reference count
581 * If we're forcing a shutdown, typically because of a media error,
582 * we want to make sure we invalidate dirty pages that belong to
583 * referenced vnodes as well.
585 if (XFS_FORCED_SHUTDOWN(mp
)) {
586 error
= xfs_sync(&mp
->m_bhv
,
587 (SYNC_WAIT
| SYNC_CLOSE
), credp
);
588 ASSERT(error
!= EFSCORRUPTED
);
590 xfs_unmountfs_needed
= 1;
593 /* Send DMAPI event, if required.
594 * Then do xfs_unmountfs() if needed.
595 * Then return error (or zero).
597 if (unmount_event_wanted
) {
598 /* Note: mp structure must still exist for
599 * XFS_SEND_UNMOUNT() call.
601 XFS_SEND_UNMOUNT(mp
, vfsp
, error
== 0 ? rvp
: NULL
,
602 DM_RIGHT_NULL
, 0, error
, unmount_event_flags
);
604 if (xfs_unmountfs_needed
) {
606 * Call common unmount function to flush to disk
607 * and free the super block buffer & mount structures.
609 xfs_unmountfs(mp
, credp
);
612 return XFS_ERROR(error
);
619 int count
= 0, pincount
;
621 xfs_refcache_purge_mp(mp
);
622 xfs_flush_buftarg(mp
->m_ddev_targp
, 0);
623 xfs_finish_reclaim_all(mp
, 0);
625 /* This loop must run at least twice.
626 * The first instance of the loop will flush
627 * most meta data but that will generate more
628 * meta data (typically directory updates).
629 * Which then must be flushed and logged before
630 * we can write the unmount record.
633 xfs_syncsub(mp
, SYNC_REMOUNT
|SYNC_ATTR
|SYNC_WAIT
, 0, NULL
);
634 pincount
= xfs_flush_buftarg(mp
->m_ddev_targp
, 1);
648 struct xfs_mount_args
*args
)
650 struct vfs
*vfsp
= bhvtovfs(bdp
);
651 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
654 if (args
->flags
& XFSMNT_NOATIME
)
655 mp
->m_flags
|= XFS_MOUNT_NOATIME
;
657 mp
->m_flags
&= ~XFS_MOUNT_NOATIME
;
659 if ((vfsp
->vfs_flag
& VFS_RDONLY
) &&
660 !(*flags
& MS_RDONLY
)) {
661 vfsp
->vfs_flag
&= ~VFS_RDONLY
;
663 if (args
->flags
& XFSMNT_BARRIER
)
664 xfs_mountfs_check_barriers(mp
);
667 if (!(vfsp
->vfs_flag
& VFS_RDONLY
) &&
668 (*flags
& MS_RDONLY
)) {
669 VFS_SYNC(vfsp
, SYNC_FSDATA
|SYNC_BDFLUSH
|SYNC_ATTR
, NULL
, error
);
673 /* Ok now write out an unmount record */
674 xfs_log_unmount_write(mp
);
675 xfs_unmountfs_writesb(mp
);
676 vfsp
->vfs_flag
|= VFS_RDONLY
;
683 * xfs_unmount_flush implements a set of flush operation on special
684 * inodes, which are needed as a separate set of operations so that
685 * they can be called as part of relocation process.
689 xfs_mount_t
*mp
, /* Mount structure we are getting
691 int relocation
) /* Called from vfs relocation. */
693 xfs_inode_t
*rip
= mp
->m_rootip
;
695 xfs_inode_t
*rsumip
= NULL
;
696 vnode_t
*rvp
= XFS_ITOV(rip
);
699 xfs_ilock(rip
, XFS_ILOCK_EXCL
);
703 * Flush out the real time inodes.
705 if ((rbmip
= mp
->m_rbmip
) != NULL
) {
706 xfs_ilock(rbmip
, XFS_ILOCK_EXCL
);
708 error
= xfs_iflush(rbmip
, XFS_IFLUSH_SYNC
);
709 xfs_iunlock(rbmip
, XFS_ILOCK_EXCL
);
711 if (error
== EFSCORRUPTED
)
714 ASSERT(vn_count(XFS_ITOV(rbmip
)) == 1);
716 rsumip
= mp
->m_rsumip
;
717 xfs_ilock(rsumip
, XFS_ILOCK_EXCL
);
719 error
= xfs_iflush(rsumip
, XFS_IFLUSH_SYNC
);
720 xfs_iunlock(rsumip
, XFS_ILOCK_EXCL
);
722 if (error
== EFSCORRUPTED
)
725 ASSERT(vn_count(XFS_ITOV(rsumip
)) == 1);
729 * Synchronously flush root inode to disk
731 error
= xfs_iflush(rip
, XFS_IFLUSH_SYNC
);
732 if (error
== EFSCORRUPTED
)
735 if (vn_count(rvp
) != 1 && !relocation
) {
736 xfs_iunlock(rip
, XFS_ILOCK_EXCL
);
737 return XFS_ERROR(EBUSY
);
741 * Release dquot that rootinode, rbmino and rsumino might be holding,
742 * flush and purge the quota inodes.
744 error
= XFS_QM_UNMOUNT(mp
);
745 if (error
== EFSCORRUPTED
)
749 VN_RELE(XFS_ITOV(rbmip
));
750 VN_RELE(XFS_ITOV(rsumip
));
753 xfs_iunlock(rip
, XFS_ILOCK_EXCL
);
760 xfs_iunlock(rip
, XFS_ILOCK_EXCL
);
762 return XFS_ERROR(EFSCORRUPTED
);
766 * xfs_root extracts the root vnode from a vfs.
768 * vfsp -- the vfs struct for the desired file system
769 * vpp -- address of the caller's vnode pointer which should be
770 * set to the desired fs root vnode
779 vp
= XFS_ITOV((XFS_BHVTOM(bdp
))->m_rootip
);
788 * Fill in the statvfs structure for the given file system. We use
789 * the superblock lock in the mount structure to ensure a consistent
790 * snapshot of the counters returned.
804 mp
= XFS_BHVTOM(bdp
);
807 statp
->f_type
= XFS_SB_MAGIC
;
810 statp
->f_bsize
= sbp
->sb_blocksize
;
811 lsize
= sbp
->sb_logstart
? sbp
->sb_logblocks
: 0;
812 statp
->f_blocks
= sbp
->sb_dblocks
- lsize
;
813 statp
->f_bfree
= statp
->f_bavail
= sbp
->sb_fdblocks
;
814 fakeinos
= statp
->f_bfree
<< sbp
->sb_inopblog
;
816 fakeinos
+= mp
->m_inoadd
;
819 MIN(sbp
->sb_icount
+ fakeinos
, (__uint64_t
)XFS_MAXINUMBER
);
824 statp
->f_files
= min_t(typeof(statp
->f_files
),
827 statp
->f_ffree
= statp
->f_files
- (sbp
->sb_icount
- sbp
->sb_ifree
);
828 XFS_SB_UNLOCK(mp
, s
);
830 xfs_statvfs_fsid(statp
, mp
);
831 statp
->f_namelen
= MAXNAMELEN
- 1;
838 * xfs_sync flushes any pending I/O to file system vfsp.
840 * This routine is called by vfs_sync() to make sure that things make it
841 * out to disk eventually, on sync() system calls to flush out everything,
842 * and when the file system is unmounted. For the vfs_sync() case, all
843 * we really need to do is sync out the log to make all of our meta-data
844 * updates permanent (except for timestamps). For calls from pflushd(),
845 * dirty pages are kept moving by calling pdflush() on the inodes
846 * containing them. We also flush the inodes that we can lock without
847 * sleeping and the superblock if we can lock it without sleeping from
848 * vfs_sync() so that items at the tail of the log are always moving out.
851 * SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want
852 * to sleep if we can help it. All we really need
853 * to do is ensure that the log is synced at least
854 * periodically. We also push the inodes and
855 * superblock if we can lock them without sleeping
856 * and they are not pinned.
857 * SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not
858 * set, then we really want to lock each inode and flush
860 * SYNC_WAIT - All the flushes that take place in this call should
862 * SYNC_DELWRI - This tells us to push dirty pages associated with
863 * inodes. SYNC_WAIT and SYNC_BDFLUSH are used to
864 * determine if they should be flushed sync, async, or
866 * SYNC_CLOSE - This flag is passed when the system is being
867 * unmounted. We should sync and invalidate everthing.
868 * SYNC_FSDATA - This indicates that the caller would like to make
869 * sure the superblock is safe on disk. We can ensure
870 * this by simply makeing sure the log gets flushed
871 * if SYNC_BDFLUSH is set, and by actually writing it
882 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
884 if (unlikely(flags
== SYNC_QUIESCE
))
885 return xfs_quiesce_fs(mp
);
887 return xfs_syncsub(mp
, flags
, 0, NULL
);
891 * xfs sync routine for internal use
893 * This routine supports all of the flags defined for the generic VFS_SYNC
894 * interface as explained above under xfs_sync. In the interests of not
895 * changing interfaces within the 6.5 family, additional internallly-
896 * required functions are specified within a separate xflags parameter,
897 * only available by calling this routine.
907 xfs_inode_t
*ip
= NULL
;
908 xfs_inode_t
*ip_next
;
915 uint base_lock_flags
;
916 boolean_t mount_locked
;
917 boolean_t vnode_refed
;
920 xfs_iptr_t
*ipointer
;
922 boolean_t ipointer_in
= B_FALSE
;
924 #define IPOINTER_SET ipointer_in = B_TRUE
925 #define IPOINTER_CLR ipointer_in = B_FALSE
932 /* Insert a marker record into the inode list after inode ip. The list
933 * must be locked when this is called. After the call the list will no
936 #define IPOINTER_INSERT(ip, mp) { \
937 ASSERT(ipointer_in == B_FALSE); \
938 ipointer->ip_mnext = ip->i_mnext; \
939 ipointer->ip_mprev = ip; \
940 ip->i_mnext = (xfs_inode_t *)ipointer; \
941 ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \
943 XFS_MOUNT_IUNLOCK(mp); \
944 mount_locked = B_FALSE; \
948 /* Remove the marker from the inode list. If the marker was the only item
949 * in the list then there are no remaining inodes and we should zero out
950 * the whole list. If we are the current head of the list then move the head
953 #define IPOINTER_REMOVE(ip, mp) { \
954 ASSERT(ipointer_in == B_TRUE); \
955 if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \
956 ip = ipointer->ip_mnext; \
957 ip->i_mprev = ipointer->ip_mprev; \
958 ipointer->ip_mprev->i_mnext = ip; \
959 if (mp->m_inodes == (xfs_inode_t *)ipointer) { \
963 ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \
964 mp->m_inodes = NULL; \
970 #define XFS_PREEMPT_MASK 0x7f
974 if (XFS_MTOVFS(mp
)->vfs_flag
& VFS_RDONLY
)
980 /* Allocate a reference marker */
981 ipointer
= (xfs_iptr_t
*)kmem_zalloc(sizeof(xfs_iptr_t
), KM_SLEEP
);
983 fflag
= XFS_B_ASYNC
; /* default is don't wait */
984 if (flags
& (SYNC_BDFLUSH
| SYNC_DELWRI
))
985 fflag
= XFS_B_DELWRI
;
986 if (flags
& SYNC_WAIT
)
987 fflag
= 0; /* synchronous overrides all */
989 base_lock_flags
= XFS_ILOCK_SHARED
;
990 if (flags
& (SYNC_DELWRI
| SYNC_CLOSE
)) {
992 * We need the I/O lock if we're going to call any of
993 * the flush/inval routines.
995 base_lock_flags
|= XFS_IOLOCK_SHARED
;
1002 mount_locked
= B_TRUE
;
1003 vnode_refed
= B_FALSE
;
1008 ASSERT(ipointer_in
== B_FALSE
);
1009 ASSERT(vnode_refed
== B_FALSE
);
1011 lock_flags
= base_lock_flags
;
1014 * There were no inodes in the list, just break out
1022 * We found another sync thread marker - skip it
1024 if (ip
->i_mount
== NULL
) {
1029 vp
= XFS_ITOV_NULL(ip
);
1032 * If the vnode is gone then this is being torn down,
1033 * call reclaim if it is flushed, else let regular flush
1034 * code deal with it later in the loop.
1038 /* Skip ones already in reclaim */
1039 if (ip
->i_flags
& XFS_IRECLAIM
) {
1043 if (xfs_ilock_nowait(ip
, XFS_ILOCK_EXCL
) == 0) {
1045 } else if ((xfs_ipincount(ip
) == 0) &&
1046 xfs_iflock_nowait(ip
)) {
1047 IPOINTER_INSERT(ip
, mp
);
1049 xfs_finish_reclaim(ip
, 1,
1050 XFS_IFLUSH_DELWRI_ELSE_ASYNC
);
1052 XFS_MOUNT_ILOCK(mp
);
1053 mount_locked
= B_TRUE
;
1054 IPOINTER_REMOVE(ip
, mp
);
1056 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1067 if (XFS_FORCED_SHUTDOWN(mp
) && !(flags
& SYNC_CLOSE
)) {
1068 XFS_MOUNT_IUNLOCK(mp
);
1069 kmem_free(ipointer
, sizeof(xfs_iptr_t
));
1074 * If this is just vfs_sync() or pflushd() calling
1075 * then we can skip inodes for which it looks like
1076 * there is nothing to do. Since we don't have the
1077 * inode locked this is racey, but these are periodic
1078 * calls so it doesn't matter. For the others we want
1079 * to know for sure, so we at least try to lock them.
1081 if (flags
& SYNC_BDFLUSH
) {
1082 if (((ip
->i_itemp
== NULL
) ||
1083 !(ip
->i_itemp
->ili_format
.ilf_fields
&
1085 (ip
->i_update_core
== 0)) {
1092 * Try to lock without sleeping. We're out of order with
1093 * the inode list lock here, so if we fail we need to drop
1094 * the mount lock and try again. If we're called from
1095 * bdflush() here, then don't bother.
1097 * The inode lock here actually coordinates with the
1098 * almost spurious inode lock in xfs_ireclaim() to prevent
1099 * the vnode we handle here without a reference from
1100 * being freed while we reference it. If we lock the inode
1101 * while it's on the mount list here, then the spurious inode
1102 * lock in xfs_ireclaim() after the inode is pulled from
1103 * the mount list will sleep until we release it here.
1104 * This keeps the vnode from being freed while we reference
1107 if (xfs_ilock_nowait(ip
, lock_flags
) == 0) {
1108 if ((flags
& SYNC_BDFLUSH
) || (vp
== NULL
)) {
1119 IPOINTER_INSERT(ip
, mp
);
1120 xfs_ilock(ip
, lock_flags
);
1122 ASSERT(vp
== XFS_ITOV(ip
));
1123 ASSERT(ip
->i_mount
== mp
);
1125 vnode_refed
= B_TRUE
;
1128 /* From here on in the loop we may have a marker record
1129 * in the inode list.
1132 if ((flags
& SYNC_CLOSE
) && (vp
!= NULL
)) {
1134 * This is the shutdown case. We just need to
1135 * flush and invalidate all the pages associated
1136 * with the inode. Drop the inode lock since
1137 * we can't hold it across calls to the buffer
1140 * We don't set the VREMAPPING bit in the vnode
1141 * here, because we don't hold the vnode lock
1142 * exclusively. It doesn't really matter, though,
1143 * because we only come here when we're shutting
1146 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1148 if (XFS_FORCED_SHUTDOWN(mp
)) {
1149 VOP_TOSS_PAGES(vp
, 0, -1, FI_REMAPF
);
1151 VOP_FLUSHINVAL_PAGES(vp
, 0, -1, FI_REMAPF
);
1154 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
1156 } else if ((flags
& SYNC_DELWRI
) && (vp
!= NULL
)) {
1158 /* We need to have dropped the lock here,
1159 * so insert a marker if we have not already
1163 IPOINTER_INSERT(ip
, mp
);
1167 * Drop the inode lock since we can't hold it
1168 * across calls to the buffer cache.
1170 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1171 VOP_FLUSH_PAGES(vp
, (xfs_off_t
)0, -1,
1172 fflag
, FI_NONE
, error
);
1173 xfs_ilock(ip
, XFS_ILOCK_SHARED
);
1178 if (flags
& SYNC_BDFLUSH
) {
1179 if ((flags
& SYNC_ATTR
) &&
1180 ((ip
->i_update_core
) ||
1181 ((ip
->i_itemp
!= NULL
) &&
1182 (ip
->i_itemp
->ili_format
.ilf_fields
!= 0)))) {
1184 /* Insert marker and drop lock if not already
1188 IPOINTER_INSERT(ip
, mp
);
1192 * We don't want the periodic flushing of the
1193 * inodes by vfs_sync() to interfere with
1194 * I/O to the file, especially read I/O
1195 * where it is only the access time stamp
1196 * that is being flushed out. To prevent
1197 * long periods where we have both inode
1198 * locks held shared here while reading the
1199 * inode's buffer in from disk, we drop the
1200 * inode lock while reading in the inode
1201 * buffer. We have to release the buffer
1202 * and reacquire the inode lock so that they
1203 * are acquired in the proper order (inode
1204 * locks first). The buffer will go at the
1205 * end of the lru chain, though, so we can
1206 * expect it to still be there when we go
1207 * for it again in xfs_iflush().
1209 if ((xfs_ipincount(ip
) == 0) &&
1210 xfs_iflock_nowait(ip
)) {
1213 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1215 error
= xfs_itobp(mp
, NULL
, ip
,
1220 /* Bailing out, remove the
1221 * marker and free it.
1223 XFS_MOUNT_ILOCK(mp
);
1225 IPOINTER_REMOVE(ip
, mp
);
1227 XFS_MOUNT_IUNLOCK(mp
);
1229 ASSERT(!(lock_flags
&
1230 XFS_IOLOCK_SHARED
));
1233 sizeof(xfs_iptr_t
));
1238 * Since we dropped the inode lock,
1239 * the inode may have been reclaimed.
1240 * Therefore, we reacquire the mount
1241 * lock and check to see if we were the
1242 * inode reclaimed. If this happened
1243 * then the ipointer marker will no
1244 * longer point back at us. In this
1245 * case, move ip along to the inode
1246 * after the marker, remove the marker
1249 XFS_MOUNT_ILOCK(mp
);
1250 mount_locked
= B_TRUE
;
1252 if (ip
!= ipointer
->ip_mprev
) {
1253 IPOINTER_REMOVE(ip
, mp
);
1255 ASSERT(!vnode_refed
);
1256 ASSERT(!(lock_flags
&
1257 XFS_IOLOCK_SHARED
));
1261 ASSERT(ip
->i_mount
== mp
);
1263 if (xfs_ilock_nowait(ip
,
1264 XFS_ILOCK_SHARED
) == 0) {
1265 ASSERT(ip
->i_mount
== mp
);
1267 * We failed to reacquire
1268 * the inode lock without
1269 * sleeping, so just skip
1270 * the inode for now. We
1271 * clear the ILOCK bit from
1272 * the lock_flags so that we
1273 * won't try to drop a lock
1274 * we don't hold below.
1276 lock_flags
&= ~XFS_ILOCK_SHARED
;
1277 IPOINTER_REMOVE(ip_next
, mp
);
1278 } else if ((xfs_ipincount(ip
) == 0) &&
1279 xfs_iflock_nowait(ip
)) {
1280 ASSERT(ip
->i_mount
== mp
);
1282 * Since this is vfs_sync()
1283 * calling we only flush the
1284 * inode out if we can lock
1285 * it without sleeping and
1286 * it is not pinned. Drop
1287 * the mount lock here so
1288 * that we don't hold it for
1289 * too long. We already have
1290 * a marker in the list here.
1292 XFS_MOUNT_IUNLOCK(mp
);
1293 mount_locked
= B_FALSE
;
1294 error
= xfs_iflush(ip
,
1297 ASSERT(ip
->i_mount
== mp
);
1298 IPOINTER_REMOVE(ip_next
, mp
);
1305 if ((flags
& SYNC_ATTR
) &&
1306 ((ip
->i_update_core
) ||
1307 ((ip
->i_itemp
!= NULL
) &&
1308 (ip
->i_itemp
->ili_format
.ilf_fields
!= 0)))) {
1310 IPOINTER_INSERT(ip
, mp
);
1313 if (flags
& SYNC_WAIT
) {
1315 error
= xfs_iflush(ip
,
1319 * If we can't acquire the flush
1320 * lock, then the inode is already
1321 * being flushed so don't bother
1322 * waiting. If we can lock it then
1323 * do a delwri flush so we can
1324 * combine multiple inode flushes
1325 * in each disk write.
1327 if (xfs_iflock_nowait(ip
)) {
1328 error
= xfs_iflush(ip
,
1337 if (lock_flags
!= 0) {
1338 xfs_iunlock(ip
, lock_flags
);
1343 * If we had to take a reference on the vnode
1344 * above, then wait until after we've unlocked
1345 * the inode to release the reference. This is
1346 * because we can be already holding the inode
1347 * lock when VN_RELE() calls xfs_inactive().
1349 * Make sure to drop the mount lock before calling
1350 * VN_RELE() so that we don't trip over ourselves if
1351 * we have to go for the mount lock again in the
1355 IPOINTER_INSERT(ip
, mp
);
1360 vnode_refed
= B_FALSE
;
1368 * bail out if the filesystem is corrupted.
1370 if (error
== EFSCORRUPTED
) {
1371 if (!mount_locked
) {
1372 XFS_MOUNT_ILOCK(mp
);
1373 IPOINTER_REMOVE(ip
, mp
);
1375 XFS_MOUNT_IUNLOCK(mp
);
1376 ASSERT(ipointer_in
== B_FALSE
);
1377 kmem_free(ipointer
, sizeof(xfs_iptr_t
));
1378 return XFS_ERROR(error
);
1381 /* Let other threads have a chance at the mount lock
1382 * if we have looped many times without dropping the
1385 if ((++preempt
& XFS_PREEMPT_MASK
) == 0) {
1387 IPOINTER_INSERT(ip
, mp
);
1391 if (mount_locked
== B_FALSE
) {
1392 XFS_MOUNT_ILOCK(mp
);
1393 mount_locked
= B_TRUE
;
1394 IPOINTER_REMOVE(ip
, mp
);
1398 ASSERT(ipointer_in
== B_FALSE
);
1401 } while (ip
!= mp
->m_inodes
);
1403 XFS_MOUNT_IUNLOCK(mp
);
1405 ASSERT(ipointer_in
== B_FALSE
);
1407 kmem_free(ipointer
, sizeof(xfs_iptr_t
));
1408 return XFS_ERROR(last_error
);
1412 * xfs sync routine for internal use
1414 * This routine supports all of the flags defined for the generic VFS_SYNC
1415 * interface as explained above under xfs_sync. In the interests of not
1416 * changing interfaces within the 6.5 family, additional internallly-
1417 * required functions are specified within a separate xflags parameter,
1418 * only available by calling this routine.
1430 uint log_flags
= XFS_LOG_FORCE
;
1432 xfs_buf_log_item_t
*bip
;
1435 * Sync out the log. This ensures that the log is periodically
1436 * flushed even if there is not enough activity to fill it up.
1438 if (flags
& SYNC_WAIT
)
1439 log_flags
|= XFS_LOG_SYNC
;
1441 xfs_log_force(mp
, (xfs_lsn_t
)0, log_flags
);
1443 if (flags
& (SYNC_ATTR
|SYNC_DELWRI
)) {
1444 if (flags
& SYNC_BDFLUSH
)
1445 xfs_finish_reclaim_all(mp
, 1);
1447 error
= xfs_sync_inodes(mp
, flags
, xflags
, bypassed
);
1451 * Flushing out dirty data above probably generated more
1452 * log activity, so if this isn't vfs_sync() then flush
1455 if (flags
& SYNC_DELWRI
) {
1456 xfs_log_force(mp
, (xfs_lsn_t
)0, log_flags
);
1459 if (flags
& SYNC_FSDATA
) {
1461 * If this is vfs_sync() then only sync the superblock
1462 * if we can lock it without sleeping and it is not pinned.
1464 if (flags
& SYNC_BDFLUSH
) {
1465 bp
= xfs_getsb(mp
, XFS_BUF_TRYLOCK
);
1467 bip
= XFS_BUF_FSPRIVATE(bp
,xfs_buf_log_item_t
*);
1468 if ((bip
!= NULL
) &&
1469 xfs_buf_item_dirty(bip
)) {
1470 if (!(XFS_BUF_ISPINNED(bp
))) {
1472 error
= xfs_bwrite(mp
, bp
);
1481 bp
= xfs_getsb(mp
, 0);
1483 * If the buffer is pinned then push on the log so
1484 * we won't get stuck waiting in the write for
1485 * someone, maybe ourselves, to flush the log.
1486 * Even though we just pushed the log above, we
1487 * did not have the superblock buffer locked at
1488 * that point so it can become pinned in between
1491 if (XFS_BUF_ISPINNED(bp
))
1492 xfs_log_force(mp
, (xfs_lsn_t
)0, XFS_LOG_FORCE
);
1493 if (flags
& SYNC_WAIT
)
1494 XFS_BUF_UNASYNC(bp
);
1497 error
= xfs_bwrite(mp
, bp
);
1505 * If this is the periodic sync, then kick some entries out of
1506 * the reference cache. This ensures that idle entries are
1507 * eventually kicked out of the cache.
1509 if (flags
& SYNC_REFCACHE
) {
1510 if (flags
& SYNC_WAIT
)
1511 xfs_refcache_purge_mp(mp
);
1513 xfs_refcache_purge_some(mp
);
1517 * Now check to see if the log needs a "dummy" transaction.
1520 if (!(flags
& SYNC_REMOUNT
) && xfs_log_need_covered(mp
)) {
1525 * Put a dummy transaction in the log to tell
1526 * recovery that all others are OK.
1528 tp
= xfs_trans_alloc(mp
, XFS_TRANS_DUMMY1
);
1529 if ((error
= xfs_trans_reserve(tp
, 0,
1530 XFS_ICHANGE_LOG_RES(mp
),
1532 xfs_trans_cancel(tp
, 0);
1537 xfs_ilock(ip
, XFS_ILOCK_EXCL
);
1539 xfs_trans_ijoin(tp
, ip
, XFS_ILOCK_EXCL
);
1540 xfs_trans_ihold(tp
, ip
);
1541 xfs_trans_log_inode(tp
, ip
, XFS_ILOG_CORE
);
1542 error
= xfs_trans_commit(tp
, 0, NULL
);
1543 xfs_iunlock(ip
, XFS_ILOCK_EXCL
);
1544 xfs_log_force(mp
, (xfs_lsn_t
)0, log_flags
);
1548 * When shutting down, we need to insure that the AIL is pushed
1549 * to disk or the filesystem can appear corrupt from the PROM.
1551 if ((flags
& (SYNC_CLOSE
|SYNC_WAIT
)) == (SYNC_CLOSE
|SYNC_WAIT
)) {
1552 XFS_bflush(mp
->m_ddev_targp
);
1553 if (mp
->m_rtdev_targp
) {
1554 XFS_bflush(mp
->m_rtdev_targp
);
1558 return XFS_ERROR(last_error
);
1562 * xfs_vget - called by DMAPI and NFSD to get vnode from file handle
1570 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
1571 xfs_fid_t
*xfid
= (struct xfs_fid
*)fidp
;
1578 * Invalid. Since handles can be created in user space and passed in
1579 * via gethandle(), this is not cause for a panic.
1581 if (xfid
->xfs_fid_len
!= sizeof(*xfid
) - sizeof(xfid
->xfs_fid_len
))
1582 return XFS_ERROR(EINVAL
);
1584 ino
= xfid
->xfs_fid_ino
;
1585 igen
= xfid
->xfs_fid_gen
;
1588 * NFS can sometimes send requests for ino 0. Fail them gracefully.
1591 return XFS_ERROR(ESTALE
);
1593 error
= xfs_iget(mp
, NULL
, ino
, 0, XFS_ILOCK_SHARED
, &ip
, 0);
1601 return XFS_ERROR(EIO
);
1604 if (ip
->i_d
.di_mode
== 0 || ip
->i_d
.di_gen
!= igen
) {
1605 xfs_iput_new(ip
, XFS_ILOCK_SHARED
);
1607 return XFS_ERROR(ENOENT
);
1610 *vpp
= XFS_ITOV(ip
);
1611 xfs_iunlock(ip
, XFS_ILOCK_SHARED
);
1616 #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */
1617 #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */
1618 #define MNTOPT_LOGDEV "logdev" /* log device */
1619 #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */
1620 #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */
1621 #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */
1622 #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */
1623 #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */
1624 #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */
1625 #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */
1626 #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */
1627 #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */
1628 #define MNTOPT_MTPT "mtpt" /* filesystem mount point */
1629 #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */
1630 #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */
1631 #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */
1632 #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */
1633 #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */
1634 #define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */
1635 #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
1636 #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
1637 * unwritten extent conversion */
1638 #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
1639 #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
1640 #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
1641 #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */
1642 #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
1643 #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
1645 #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
1646 #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
1648 STATIC
unsigned long
1649 suffix_strtoul(const char *cp
, char **endp
, unsigned int base
)
1651 int last
, shift_left_factor
= 0;
1652 char *value
= (char *)cp
;
1654 last
= strlen(value
) - 1;
1655 if (value
[last
] == 'K' || value
[last
] == 'k') {
1656 shift_left_factor
= 10;
1659 if (value
[last
] == 'M' || value
[last
] == 'm') {
1660 shift_left_factor
= 20;
1663 if (value
[last
] == 'G' || value
[last
] == 'g') {
1664 shift_left_factor
= 30;
1668 return simple_strtoul(cp
, endp
, base
) << shift_left_factor
;
1673 struct bhv_desc
*bhv
,
1675 struct xfs_mount_args
*args
,
1678 struct vfs
*vfsp
= bhvtovfs(bhv
);
1679 char *this_char
, *value
, *eov
;
1680 int dsunit
, dswidth
, vol_dsunit
, vol_dswidth
;
1683 args
->flags2
|= XFSMNT2_COMPAT_IOSIZE
;
1684 args
->flags
|= XFSMNT_COMPAT_ATTR
;
1686 #if 0 /* XXX: off by default, until some remaining issues ironed out */
1687 args
->flags
|= XFSMNT_IDELETE
; /* default to on */
1693 iosize
= dsunit
= dswidth
= vol_dsunit
= vol_dswidth
= 0;
1695 while ((this_char
= strsep(&options
, ",")) != NULL
) {
1698 if ((value
= strchr(this_char
, '=')) != NULL
)
1701 if (!strcmp(this_char
, MNTOPT_LOGBUFS
)) {
1702 if (!value
|| !*value
) {
1703 printk("XFS: %s option requires an argument\n",
1707 args
->logbufs
= simple_strtoul(value
, &eov
, 10);
1708 } else if (!strcmp(this_char
, MNTOPT_LOGBSIZE
)) {
1709 if (!value
|| !*value
) {
1710 printk("XFS: %s option requires an argument\n",
1714 args
->logbufsize
= suffix_strtoul(value
, &eov
, 10);
1715 } else if (!strcmp(this_char
, MNTOPT_LOGDEV
)) {
1716 if (!value
|| !*value
) {
1717 printk("XFS: %s option requires an argument\n",
1721 strncpy(args
->logname
, value
, MAXNAMELEN
);
1722 } else if (!strcmp(this_char
, MNTOPT_MTPT
)) {
1723 if (!value
|| !*value
) {
1724 printk("XFS: %s option requires an argument\n",
1728 strncpy(args
->mtpt
, value
, MAXNAMELEN
);
1729 } else if (!strcmp(this_char
, MNTOPT_RTDEV
)) {
1730 if (!value
|| !*value
) {
1731 printk("XFS: %s option requires an argument\n",
1735 strncpy(args
->rtname
, value
, MAXNAMELEN
);
1736 } else if (!strcmp(this_char
, MNTOPT_BIOSIZE
)) {
1737 if (!value
|| !*value
) {
1738 printk("XFS: %s option requires an argument\n",
1742 iosize
= simple_strtoul(value
, &eov
, 10);
1743 args
->flags
|= XFSMNT_IOSIZE
;
1744 args
->iosizelog
= (uint8_t) iosize
;
1745 } else if (!strcmp(this_char
, MNTOPT_ALLOCSIZE
)) {
1746 if (!value
|| !*value
) {
1747 printk("XFS: %s option requires an argument\n",
1751 iosize
= suffix_strtoul(value
, &eov
, 10);
1752 args
->flags
|= XFSMNT_IOSIZE
;
1753 args
->iosizelog
= ffs(iosize
) - 1;
1754 } else if (!strcmp(this_char
, MNTOPT_IHASHSIZE
)) {
1755 if (!value
|| !*value
) {
1756 printk("XFS: %s option requires an argument\n",
1760 args
->flags
|= XFSMNT_IHASHSIZE
;
1761 args
->ihashsize
= simple_strtoul(value
, &eov
, 10);
1762 } else if (!strcmp(this_char
, MNTOPT_GRPID
) ||
1763 !strcmp(this_char
, MNTOPT_BSDGROUPS
)) {
1764 vfsp
->vfs_flag
|= VFS_GRPID
;
1765 } else if (!strcmp(this_char
, MNTOPT_NOGRPID
) ||
1766 !strcmp(this_char
, MNTOPT_SYSVGROUPS
)) {
1767 vfsp
->vfs_flag
&= ~VFS_GRPID
;
1768 } else if (!strcmp(this_char
, MNTOPT_WSYNC
)) {
1769 args
->flags
|= XFSMNT_WSYNC
;
1770 } else if (!strcmp(this_char
, MNTOPT_OSYNCISOSYNC
)) {
1771 args
->flags
|= XFSMNT_OSYNCISOSYNC
;
1772 } else if (!strcmp(this_char
, MNTOPT_NORECOVERY
)) {
1773 args
->flags
|= XFSMNT_NORECOVERY
;
1774 } else if (!strcmp(this_char
, MNTOPT_INO64
)) {
1775 args
->flags
|= XFSMNT_INO64
;
1777 printk("XFS: %s option not allowed on this system\n",
1781 } else if (!strcmp(this_char
, MNTOPT_NOALIGN
)) {
1782 args
->flags
|= XFSMNT_NOALIGN
;
1783 } else if (!strcmp(this_char
, MNTOPT_SWALLOC
)) {
1784 args
->flags
|= XFSMNT_SWALLOC
;
1785 } else if (!strcmp(this_char
, MNTOPT_SUNIT
)) {
1786 if (!value
|| !*value
) {
1787 printk("XFS: %s option requires an argument\n",
1791 dsunit
= simple_strtoul(value
, &eov
, 10);
1792 } else if (!strcmp(this_char
, MNTOPT_SWIDTH
)) {
1793 if (!value
|| !*value
) {
1794 printk("XFS: %s option requires an argument\n",
1798 dswidth
= simple_strtoul(value
, &eov
, 10);
1799 } else if (!strcmp(this_char
, MNTOPT_64BITINODE
)) {
1800 args
->flags
&= ~XFSMNT_32BITINODES
;
1802 printk("XFS: %s option not allowed on this system\n",
1806 } else if (!strcmp(this_char
, MNTOPT_NOUUID
)) {
1807 args
->flags
|= XFSMNT_NOUUID
;
1808 } else if (!strcmp(this_char
, MNTOPT_BARRIER
)) {
1809 args
->flags
|= XFSMNT_BARRIER
;
1810 } else if (!strcmp(this_char
, MNTOPT_IKEEP
)) {
1811 args
->flags
&= ~XFSMNT_IDELETE
;
1812 } else if (!strcmp(this_char
, MNTOPT_NOIKEEP
)) {
1813 args
->flags
|= XFSMNT_IDELETE
;
1814 } else if (!strcmp(this_char
, MNTOPT_LARGEIO
)) {
1815 args
->flags2
&= ~XFSMNT2_COMPAT_IOSIZE
;
1816 } else if (!strcmp(this_char
, MNTOPT_NOLARGEIO
)) {
1817 args
->flags2
|= XFSMNT2_COMPAT_IOSIZE
;
1818 } else if (!strcmp(this_char
, MNTOPT_ATTR2
)) {
1819 args
->flags
&= ~XFSMNT_COMPAT_ATTR
;
1820 } else if (!strcmp(this_char
, MNTOPT_NOATTR2
)) {
1821 args
->flags
|= XFSMNT_COMPAT_ATTR
;
1822 } else if (!strcmp(this_char
, "osyncisdsync")) {
1823 /* no-op, this is now the default */
1824 printk("XFS: osyncisdsync is now the default, option is deprecated.\n");
1825 } else if (!strcmp(this_char
, "irixsgid")) {
1826 printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n");
1828 printk("XFS: unknown mount option [%s].\n", this_char
);
1833 if (args
->flags
& XFSMNT_NORECOVERY
) {
1834 if ((vfsp
->vfs_flag
& VFS_RDONLY
) == 0) {
1835 printk("XFS: no-recovery mounts must be read-only.\n");
1840 if ((args
->flags
& XFSMNT_NOALIGN
) && (dsunit
|| dswidth
)) {
1842 "XFS: sunit and swidth options incompatible with the noalign option\n");
1846 if ((dsunit
&& !dswidth
) || (!dsunit
&& dswidth
)) {
1847 printk("XFS: sunit and swidth must be specified together\n");
1851 if (dsunit
&& (dswidth
% dsunit
!= 0)) {
1853 "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n",
1858 if ((args
->flags
& XFSMNT_NOALIGN
) != XFSMNT_NOALIGN
) {
1860 args
->sunit
= dsunit
;
1861 args
->flags
|= XFSMNT_RETERR
;
1863 args
->sunit
= vol_dsunit
;
1865 dswidth
? (args
->swidth
= dswidth
) :
1866 (args
->swidth
= vol_dswidth
);
1868 args
->sunit
= args
->swidth
= 0;
1871 if (args
->flags
& XFSMNT_32BITINODES
)
1872 vfsp
->vfs_flag
|= VFS_32BITINODES
;
1875 args
->flags
|= XFSMNT_FLAGS2
;
1881 struct bhv_desc
*bhv
,
1884 static struct proc_xfs_info
{
1888 /* the few simple ones we can get from the mount struct */
1889 { XFS_MOUNT_WSYNC
, "," MNTOPT_WSYNC
},
1890 { XFS_MOUNT_INO64
, "," MNTOPT_INO64
},
1891 { XFS_MOUNT_NOALIGN
, "," MNTOPT_NOALIGN
},
1892 { XFS_MOUNT_SWALLOC
, "," MNTOPT_SWALLOC
},
1893 { XFS_MOUNT_NOUUID
, "," MNTOPT_NOUUID
},
1894 { XFS_MOUNT_NORECOVERY
, "," MNTOPT_NORECOVERY
},
1895 { XFS_MOUNT_OSYNCISOSYNC
, "," MNTOPT_OSYNCISOSYNC
},
1896 { XFS_MOUNT_BARRIER
, "," MNTOPT_BARRIER
},
1897 { XFS_MOUNT_IDELETE
, "," MNTOPT_NOIKEEP
},
1900 struct proc_xfs_info
*xfs_infop
;
1901 struct xfs_mount
*mp
= XFS_BHVTOM(bhv
);
1902 struct vfs
*vfsp
= XFS_MTOVFS(mp
);
1904 for (xfs_infop
= xfs_info
; xfs_infop
->flag
; xfs_infop
++) {
1905 if (mp
->m_flags
& xfs_infop
->flag
)
1906 seq_puts(m
, xfs_infop
->str
);
1909 if (mp
->m_flags
& XFS_MOUNT_IHASHSIZE
)
1910 seq_printf(m
, "," MNTOPT_IHASHSIZE
"=%d", mp
->m_ihsize
);
1912 if (mp
->m_flags
& XFS_MOUNT_DFLT_IOSIZE
)
1913 seq_printf(m
, "," MNTOPT_ALLOCSIZE
"=%d", 1<<mp
->m_writeio_log
);
1915 if (mp
->m_logbufs
> 0)
1916 seq_printf(m
, "," MNTOPT_LOGBUFS
"=%d", mp
->m_logbufs
);
1918 if (mp
->m_logbsize
> 0)
1919 seq_printf(m
, "," MNTOPT_LOGBSIZE
"=%d", mp
->m_logbsize
);
1922 seq_printf(m
, "," MNTOPT_LOGDEV
"=%s", mp
->m_logname
);
1925 seq_printf(m
, "," MNTOPT_RTDEV
"=%s", mp
->m_rtname
);
1927 if (mp
->m_dalign
> 0)
1928 seq_printf(m
, "," MNTOPT_SUNIT
"=%d",
1929 (int)XFS_FSB_TO_BB(mp
, mp
->m_dalign
));
1931 if (mp
->m_swidth
> 0)
1932 seq_printf(m
, "," MNTOPT_SWIDTH
"=%d",
1933 (int)XFS_FSB_TO_BB(mp
, mp
->m_swidth
));
1935 if (!(mp
->m_flags
& XFS_MOUNT_COMPAT_ATTR
))
1936 seq_printf(m
, "," MNTOPT_ATTR2
);
1938 if (!(mp
->m_flags
& XFS_MOUNT_COMPAT_IOSIZE
))
1939 seq_printf(m
, "," MNTOPT_LARGEIO
);
1941 if (!(vfsp
->vfs_flag
& VFS_32BITINODES
))
1942 seq_printf(m
, "," MNTOPT_64BITINODE
);
1944 if (vfsp
->vfs_flag
& VFS_GRPID
)
1945 seq_printf(m
, "," MNTOPT_GRPID
);
1954 xfs_mount_t
*mp
= XFS_BHVTOM(bdp
);
1956 while (atomic_read(&mp
->m_active_trans
) > 0)
1959 /* Push the superblock and write an unmount record */
1960 xfs_log_unmount_write(mp
);
1961 xfs_unmountfs_writesb(mp
);
1965 vfsops_t xfs_vfsops
= {
1966 BHV_IDENTITY_INIT(VFS_BHV_XFS
,VFS_POSITION_XFS
),
1967 .vfs_parseargs
= xfs_parseargs
,
1968 .vfs_showargs
= xfs_showargs
,
1969 .vfs_mount
= xfs_mount
,
1970 .vfs_unmount
= xfs_unmount
,
1971 .vfs_mntupdate
= xfs_mntupdate
,
1972 .vfs_root
= xfs_root
,
1973 .vfs_statvfs
= xfs_statvfs
,
1974 .vfs_sync
= xfs_sync
,
1975 .vfs_vget
= xfs_vget
,
1976 .vfs_dmapiops
= (vfs_dmapiops_t
)fs_nosys
,
1977 .vfs_quotactl
= (vfs_quotactl_t
)fs_nosys
,
1978 .vfs_init_vnode
= xfs_initialize_vnode
,
1979 .vfs_force_shutdown
= xfs_do_force_shutdown
,
1980 .vfs_freeze
= xfs_freeze
,