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 | XFS_MOUNT_32BITINOOPT);
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;
1872 args->flags |= XFSMNT_FLAGS2;
1878 struct bhv_desc *bhv,
1881 static struct proc_xfs_info {
1885 /* the few simple ones we can get from the mount struct */
1886 { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC },
1887 { XFS_MOUNT_INO64, "," MNTOPT_INO64 },
1888 { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN },
1889 { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC },
1890 { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
1891 { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
1892 { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
1893 { XFS_MOUNT_BARRIER, "," MNTOPT_BARRIER },
1894 { XFS_MOUNT_IDELETE, "," MNTOPT_NOIKEEP },
1897 struct proc_xfs_info *xfs_infop;
1898 struct xfs_mount *mp = XFS_BHVTOM(bhv);
1899 struct vfs *vfsp = XFS_MTOVFS(mp);
1901 for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) {
1902 if (mp->m_flags & xfs_infop->flag)
1903 seq_puts(m, xfs_infop->str);
1906 if (mp->m_flags & XFS_MOUNT_IHASHSIZE)
1907 seq_printf(m, "," MNTOPT_IHASHSIZE "=%d", mp->m_ihsize);
1909 if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)
1910 seq_printf(m, "," MNTOPT_ALLOCSIZE "=%d", 1<<mp->m_writeio_log);
1912 if (mp->m_logbufs > 0)
1913 seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs);
1915 if (mp->m_logbsize > 0)
1916 seq_printf(m, "," MNTOPT_LOGBSIZE "=%d", mp->m_logbsize);
1919 seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname);
1922 seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname);
1924 if (mp->m_dalign > 0)
1925 seq_printf(m, "," MNTOPT_SUNIT "=%d",
1926 (int)XFS_FSB_TO_BB(mp, mp->m_dalign));
1928 if (mp->m_swidth > 0)
1929 seq_printf(m, "," MNTOPT_SWIDTH "=%d",
1930 (int)XFS_FSB_TO_BB(mp, mp->m_swidth));
1932 if (!(mp->m_flags & XFS_MOUNT_32BITINOOPT))
1933 seq_printf(m, "," MNTOPT_64BITINODE);
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_GRPID)
1942 seq_printf(m, "," MNTOPT_GRPID);
1951 xfs_mount_t *mp = XFS_BHVTOM(bdp);
1953 while (atomic_read(&mp->m_active_trans) > 0)
1956 /* Push the superblock and write an unmount record */
1957 xfs_log_unmount_write(mp);
1958 xfs_unmountfs_writesb(mp);
1962 vfsops_t xfs_vfsops = {
1963 BHV_IDENTITY_INIT(VFS_BHV_XFS,VFS_POSITION_XFS),
1964 .vfs_parseargs = xfs_parseargs,
1965 .vfs_showargs = xfs_showargs,
1966 .vfs_mount = xfs_mount,
1967 .vfs_unmount = xfs_unmount,
1968 .vfs_mntupdate = xfs_mntupdate,
1969 .vfs_root = xfs_root,
1970 .vfs_statvfs = xfs_statvfs,
1971 .vfs_sync = xfs_sync,
1972 .vfs_vget = xfs_vget,
1973 .vfs_dmapiops = (vfs_dmapiops_t)fs_nosys,
1974 .vfs_quotactl = (vfs_quotactl_t)fs_nosys,
1975 .vfs_init_vnode = xfs_initialize_vnode,
1976 .vfs_force_shutdown = xfs_do_force_shutdown,
1977 .vfs_freeze = xfs_freeze,