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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_fs.h" |
1da177e4 | 20 | #include "xfs_types.h" |
a844f451 | 21 | #include "xfs_bit.h" |
1da177e4 | 22 | #include "xfs_log.h" |
a844f451 | 23 | #include "xfs_inum.h" |
1da177e4 LT |
24 | #include "xfs_trans.h" |
25 | #include "xfs_sb.h" | |
a844f451 | 26 | #include "xfs_ag.h" |
1da177e4 LT |
27 | #include "xfs_dir.h" |
28 | #include "xfs_dir2.h" | |
29 | #include "xfs_dmapi.h" | |
30 | #include "xfs_mount.h" | |
a844f451 | 31 | #include "xfs_da_btree.h" |
1da177e4 LT |
32 | #include "xfs_bmap_btree.h" |
33 | #include "xfs_ialloc_btree.h" | |
34 | #include "xfs_alloc_btree.h" | |
1da177e4 LT |
35 | #include "xfs_dir_sf.h" |
36 | #include "xfs_dir2_sf.h" | |
a844f451 | 37 | #include "xfs_attr_sf.h" |
1da177e4 | 38 | #include "xfs_dinode.h" |
1da177e4 | 39 | #include "xfs_inode.h" |
a844f451 NS |
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" | |
1da177e4 LT |
45 | #include "xfs_error.h" |
46 | #include "xfs_bmap.h" | |
1da177e4 LT |
47 | #include "xfs_rw.h" |
48 | #include "xfs_refcache.h" | |
49 | #include "xfs_buf_item.h" | |
a844f451 | 50 | #include "xfs_log_priv.h" |
1da177e4 | 51 | #include "xfs_dir2_trace.h" |
a844f451 | 52 | #include "xfs_extfree_item.h" |
1da177e4 LT |
53 | #include "xfs_acl.h" |
54 | #include "xfs_attr.h" | |
55 | #include "xfs_clnt.h" | |
1da177e4 LT |
56 | |
57 | STATIC int xfs_sync(bhv_desc_t *, int, cred_t *); | |
58 | ||
59 | int | |
60 | xfs_init(void) | |
61 | { | |
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"); | |
70 | #endif | |
71 | ||
72 | /* | |
73 | * Initialize all of the zone allocators we use. | |
74 | */ | |
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), | |
78 | "xfs_btree_cur"); | |
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"); | |
81 | xfs_da_state_zone = | |
82 | kmem_zone_init(sizeof(xfs_da_state_t), "xfs_da_state"); | |
83 | xfs_dabuf_zone = kmem_zone_init(sizeof(xfs_dabuf_t), "xfs_dabuf"); | |
84 | ||
85 | /* | |
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. | |
89 | */ | |
90 | xfs_buf_item_zone = | |
91 | kmem_zone_init((sizeof(xfs_buf_log_item_t) + | |
92 | (((XFS_MAX_BLOCKSIZE / XFS_BLI_CHUNK) / | |
93 | NBWORD) * sizeof(int))), | |
94 | "xfs_buf_item"); | |
95 | xfs_efd_zone = kmem_zone_init((sizeof(xfs_efd_log_item_t) + | |
96 | ((XFS_EFD_MAX_FAST_EXTENTS - 1) * sizeof(xfs_extent_t))), | |
97 | "xfs_efd_item"); | |
98 | xfs_efi_zone = kmem_zone_init((sizeof(xfs_efi_log_item_t) + | |
99 | ((XFS_EFI_MAX_FAST_EXTENTS - 1) * sizeof(xfs_extent_t))), | |
100 | "xfs_efi_item"); | |
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), | |
104 | "xfs_chashlist"); | |
105 | xfs_acl_zone_init(xfs_acl_zone, "xfs_acl"); | |
106 | ||
107 | /* | |
108 | * Allocate global trace buffers. | |
109 | */ | |
110 | #ifdef XFS_ALLOC_TRACE | |
111 | xfs_alloc_trace_buf = ktrace_alloc(XFS_ALLOC_TRACE_SIZE, KM_SLEEP); | |
112 | #endif | |
113 | #ifdef XFS_BMAP_TRACE | |
114 | xfs_bmap_trace_buf = ktrace_alloc(XFS_BMAP_TRACE_SIZE, KM_SLEEP); | |
115 | #endif | |
116 | #ifdef XFS_BMBT_TRACE | |
117 | xfs_bmbt_trace_buf = ktrace_alloc(XFS_BMBT_TRACE_SIZE, KM_SLEEP); | |
118 | #endif | |
119 | #ifdef XFS_DIR_TRACE | |
120 | xfs_dir_trace_buf = ktrace_alloc(XFS_DIR_TRACE_SIZE, KM_SLEEP); | |
121 | #endif | |
122 | #ifdef XFS_ATTR_TRACE | |
123 | xfs_attr_trace_buf = ktrace_alloc(XFS_ATTR_TRACE_SIZE, KM_SLEEP); | |
124 | #endif | |
125 | #ifdef XFS_DIR2_TRACE | |
126 | xfs_dir2_trace_buf = ktrace_alloc(XFS_DIR2_GTRACE_SIZE, KM_SLEEP); | |
127 | #endif | |
128 | ||
129 | xfs_dir_startup(); | |
130 | ||
131 | #if (defined(DEBUG) || defined(INDUCE_IO_ERROR)) | |
132 | xfs_error_test_init(); | |
133 | #endif /* DEBUG || INDUCE_IO_ERROR */ | |
134 | ||
135 | xfs_init_procfs(); | |
136 | xfs_sysctl_register(); | |
137 | return 0; | |
138 | } | |
139 | ||
140 | void | |
141 | xfs_cleanup(void) | |
142 | { | |
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; | |
153 | ||
154 | xfs_cleanup_procfs(); | |
155 | xfs_sysctl_unregister(); | |
156 | xfs_refcache_destroy(); | |
157 | xfs_acl_zone_destroy(xfs_acl_zone); | |
158 | ||
159 | #ifdef XFS_DIR2_TRACE | |
160 | ktrace_free(xfs_dir2_trace_buf); | |
161 | #endif | |
162 | #ifdef XFS_ATTR_TRACE | |
163 | ktrace_free(xfs_attr_trace_buf); | |
164 | #endif | |
165 | #ifdef XFS_DIR_TRACE | |
166 | ktrace_free(xfs_dir_trace_buf); | |
167 | #endif | |
168 | #ifdef XFS_BMBT_TRACE | |
169 | ktrace_free(xfs_bmbt_trace_buf); | |
170 | #endif | |
171 | #ifdef XFS_BMAP_TRACE | |
172 | ktrace_free(xfs_bmap_trace_buf); | |
173 | #endif | |
174 | #ifdef XFS_ALLOC_TRACE | |
175 | ktrace_free(xfs_alloc_trace_buf); | |
176 | #endif | |
177 | ||
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); | |
190 | } | |
191 | ||
192 | /* | |
193 | * xfs_start_flags | |
194 | * | |
195 | * This function fills in xfs_mount_t fields based on mount args. | |
196 | * Note: the superblock has _not_ yet been read in. | |
197 | */ | |
198 | STATIC int | |
199 | xfs_start_flags( | |
200 | struct vfs *vfs, | |
201 | struct xfs_mount_args *ap, | |
202 | struct xfs_mount *mp) | |
203 | { | |
204 | /* Values are in BBs */ | |
205 | if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { | |
206 | /* | |
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 | |
210 | * these to FSBs. | |
211 | */ | |
212 | mp->m_dalign = ap->sunit; | |
213 | mp->m_swidth = ap->swidth; | |
214 | } | |
215 | ||
216 | if (ap->logbufs != -1 && | |
1da177e4 | 217 | ap->logbufs != 0 && |
1da177e4 LT |
218 | (ap->logbufs < XLOG_MIN_ICLOGS || |
219 | ap->logbufs > XLOG_MAX_ICLOGS)) { | |
220 | cmn_err(CE_WARN, | |
221 | "XFS: invalid logbufs value: %d [not %d-%d]", | |
222 | ap->logbufs, XLOG_MIN_ICLOGS, XLOG_MAX_ICLOGS); | |
223 | return XFS_ERROR(EINVAL); | |
224 | } | |
225 | mp->m_logbufs = ap->logbufs; | |
226 | if (ap->logbufsize != -1 && | |
cfcbbbd0 | 227 | ap->logbufsize != 0 && |
1da177e4 LT |
228 | ap->logbufsize != 16 * 1024 && |
229 | ap->logbufsize != 32 * 1024 && | |
230 | ap->logbufsize != 64 * 1024 && | |
231 | ap->logbufsize != 128 * 1024 && | |
232 | ap->logbufsize != 256 * 1024) { | |
233 | cmn_err(CE_WARN, | |
234 | "XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]", | |
235 | ap->logbufsize); | |
236 | return XFS_ERROR(EINVAL); | |
237 | } | |
238 | mp->m_ihsize = ap->ihashsize; | |
239 | mp->m_logbsize = ap->logbufsize; | |
240 | mp->m_fsname_len = strlen(ap->fsname) + 1; | |
241 | mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP); | |
242 | strcpy(mp->m_fsname, ap->fsname); | |
fc1f8c1c NS |
243 | if (ap->rtname[0]) { |
244 | mp->m_rtname = kmem_alloc(strlen(ap->rtname) + 1, KM_SLEEP); | |
245 | strcpy(mp->m_rtname, ap->rtname); | |
246 | } | |
247 | if (ap->logname[0]) { | |
248 | mp->m_logname = kmem_alloc(strlen(ap->logname) + 1, KM_SLEEP); | |
249 | strcpy(mp->m_logname, ap->logname); | |
250 | } | |
1da177e4 LT |
251 | |
252 | if (ap->flags & XFSMNT_WSYNC) | |
253 | mp->m_flags |= XFS_MOUNT_WSYNC; | |
254 | #if XFS_BIG_INUMS | |
255 | if (ap->flags & XFSMNT_INO64) { | |
256 | mp->m_flags |= XFS_MOUNT_INO64; | |
257 | mp->m_inoadd = XFS_INO64_OFFSET; | |
258 | } | |
259 | #endif | |
260 | if (ap->flags & XFSMNT_NOATIME) | |
261 | mp->m_flags |= XFS_MOUNT_NOATIME; | |
1da177e4 LT |
262 | if (ap->flags & XFSMNT_RETERR) |
263 | mp->m_flags |= XFS_MOUNT_RETERR; | |
1da177e4 LT |
264 | if (ap->flags & XFSMNT_NOALIGN) |
265 | mp->m_flags |= XFS_MOUNT_NOALIGN; | |
1da177e4 LT |
266 | if (ap->flags & XFSMNT_SWALLOC) |
267 | mp->m_flags |= XFS_MOUNT_SWALLOC; | |
1da177e4 LT |
268 | if (ap->flags & XFSMNT_OSYNCISOSYNC) |
269 | mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC; | |
1da177e4 | 270 | if (ap->flags & XFSMNT_32BITINODES) |
c11e2c36 | 271 | mp->m_flags |= XFS_MOUNT_32BITINODES; |
1da177e4 LT |
272 | |
273 | if (ap->flags & XFSMNT_IOSIZE) { | |
274 | if (ap->iosizelog > XFS_MAX_IO_LOG || | |
275 | ap->iosizelog < XFS_MIN_IO_LOG) { | |
276 | cmn_err(CE_WARN, | |
277 | "XFS: invalid log iosize: %d [not %d-%d]", | |
278 | ap->iosizelog, XFS_MIN_IO_LOG, | |
279 | XFS_MAX_IO_LOG); | |
280 | return XFS_ERROR(EINVAL); | |
281 | } | |
282 | ||
283 | mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; | |
284 | mp->m_readio_log = mp->m_writeio_log = ap->iosizelog; | |
285 | } | |
286 | ||
287 | if (ap->flags & XFSMNT_IHASHSIZE) | |
288 | mp->m_flags |= XFS_MOUNT_IHASHSIZE; | |
1da177e4 LT |
289 | if (ap->flags & XFSMNT_IDELETE) |
290 | mp->m_flags |= XFS_MOUNT_IDELETE; | |
1da177e4 LT |
291 | if (ap->flags & XFSMNT_DIRSYNC) |
292 | mp->m_flags |= XFS_MOUNT_DIRSYNC; | |
d8cc890d NS |
293 | if (ap->flags & XFSMNT_COMPAT_ATTR) |
294 | mp->m_flags |= XFS_MOUNT_COMPAT_ATTR; | |
e8c8b3a7 | 295 | |
e718eeb4 NS |
296 | if (ap->flags2 & XFSMNT2_COMPAT_IOSIZE) |
297 | mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE; | |
298 | ||
1da177e4 LT |
299 | /* |
300 | * no recovery flag requires a read-only mount | |
301 | */ | |
302 | if (ap->flags & XFSMNT_NORECOVERY) { | |
303 | if (!(vfs->vfs_flag & VFS_RDONLY)) { | |
304 | cmn_err(CE_WARN, | |
305 | "XFS: tried to mount a FS read-write without recovery!"); | |
306 | return XFS_ERROR(EINVAL); | |
307 | } | |
308 | mp->m_flags |= XFS_MOUNT_NORECOVERY; | |
309 | } | |
310 | ||
311 | if (ap->flags & XFSMNT_NOUUID) | |
312 | mp->m_flags |= XFS_MOUNT_NOUUID; | |
f538d4da CH |
313 | if (ap->flags & XFSMNT_BARRIER) |
314 | mp->m_flags |= XFS_MOUNT_BARRIER; | |
1da177e4 LT |
315 | |
316 | return 0; | |
317 | } | |
318 | ||
319 | /* | |
320 | * This function fills in xfs_mount_t fields based on mount args. | |
321 | * Note: the superblock _has_ now been read in. | |
322 | */ | |
323 | STATIC int | |
324 | xfs_finish_flags( | |
325 | struct vfs *vfs, | |
326 | struct xfs_mount_args *ap, | |
327 | struct xfs_mount *mp) | |
328 | { | |
329 | int ronly = (vfs->vfs_flag & VFS_RDONLY); | |
330 | ||
331 | /* Fail a mount where the logbuf is smaller then the log stripe */ | |
332 | if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) { | |
333 | if ((ap->logbufsize == -1) && | |
334 | (mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) { | |
335 | mp->m_logbsize = mp->m_sb.sb_logsunit; | |
336 | } else if (ap->logbufsize < mp->m_sb.sb_logsunit) { | |
337 | cmn_err(CE_WARN, | |
338 | "XFS: logbuf size must be greater than or equal to log stripe size"); | |
339 | return XFS_ERROR(EINVAL); | |
340 | } | |
341 | } else { | |
342 | /* Fail a mount if the logbuf is larger than 32K */ | |
343 | if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) { | |
344 | cmn_err(CE_WARN, | |
345 | "XFS: logbuf size for version 1 logs must be 16K or 32K"); | |
346 | return XFS_ERROR(EINVAL); | |
347 | } | |
348 | } | |
349 | ||
350 | /* | |
351 | * prohibit r/w mounts of read-only filesystems | |
352 | */ | |
353 | if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) { | |
354 | cmn_err(CE_WARN, | |
355 | "XFS: cannot mount a read-only filesystem as read-write"); | |
356 | return XFS_ERROR(EROFS); | |
357 | } | |
358 | ||
1da177e4 LT |
359 | /* |
360 | * check for shared mount. | |
361 | */ | |
362 | if (ap->flags & XFSMNT_SHARED) { | |
363 | if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb)) | |
364 | return XFS_ERROR(EINVAL); | |
365 | ||
366 | /* | |
367 | * For IRIX 6.5, shared mounts must have the shared | |
368 | * version bit set, have the persistent readonly | |
369 | * field set, must be version 0 and can only be mounted | |
370 | * read-only. | |
371 | */ | |
372 | if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) || | |
373 | (mp->m_sb.sb_shared_vn != 0)) | |
374 | return XFS_ERROR(EINVAL); | |
375 | ||
376 | mp->m_flags |= XFS_MOUNT_SHARED; | |
377 | ||
378 | /* | |
379 | * Shared XFS V0 can't deal with DMI. Return EINVAL. | |
380 | */ | |
381 | if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI)) | |
382 | return XFS_ERROR(EINVAL); | |
383 | } | |
384 | ||
8a319ae4 NS |
385 | if (XFS_SB_VERSION_HASATTR2(&mp->m_sb)) { |
386 | mp->m_flags &= ~XFS_MOUNT_COMPAT_ATTR; | |
387 | } | |
388 | ||
1da177e4 LT |
389 | return 0; |
390 | } | |
391 | ||
392 | /* | |
393 | * xfs_mount | |
394 | * | |
395 | * The file system configurations are: | |
396 | * (1) device (partition) with data and internal log | |
397 | * (2) logical volume with data and log subvolumes. | |
398 | * (3) logical volume with data, log, and realtime subvolumes. | |
399 | * | |
400 | * We only have to handle opening the log and realtime volumes here if | |
401 | * they are present. The data subvolume has already been opened by | |
402 | * get_sb_bdev() and is stored in vfsp->vfs_super->s_bdev. | |
403 | */ | |
404 | STATIC int | |
405 | xfs_mount( | |
406 | struct bhv_desc *bhvp, | |
407 | struct xfs_mount_args *args, | |
408 | cred_t *credp) | |
409 | { | |
410 | struct vfs *vfsp = bhvtovfs(bhvp); | |
411 | struct bhv_desc *p; | |
412 | struct xfs_mount *mp = XFS_BHVTOM(bhvp); | |
413 | struct block_device *ddev, *logdev, *rtdev; | |
414 | int flags = 0, error; | |
415 | ||
416 | ddev = vfsp->vfs_super->s_bdev; | |
417 | logdev = rtdev = NULL; | |
418 | ||
419 | /* | |
420 | * Setup xfs_mount function vectors from available behaviors | |
421 | */ | |
422 | p = vfs_bhv_lookup(vfsp, VFS_POSITION_DM); | |
423 | mp->m_dm_ops = p ? *(xfs_dmops_t *) vfs_bhv_custom(p) : xfs_dmcore_stub; | |
424 | p = vfs_bhv_lookup(vfsp, VFS_POSITION_QM); | |
425 | mp->m_qm_ops = p ? *(xfs_qmops_t *) vfs_bhv_custom(p) : xfs_qmcore_stub; | |
426 | p = vfs_bhv_lookup(vfsp, VFS_POSITION_IO); | |
427 | mp->m_io_ops = p ? *(xfs_ioops_t *) vfs_bhv_custom(p) : xfs_iocore_xfs; | |
428 | ||
429 | /* | |
430 | * Open real time and log devices - order is important. | |
431 | */ | |
432 | if (args->logname[0]) { | |
433 | error = xfs_blkdev_get(mp, args->logname, &logdev); | |
434 | if (error) | |
435 | return error; | |
436 | } | |
437 | if (args->rtname[0]) { | |
438 | error = xfs_blkdev_get(mp, args->rtname, &rtdev); | |
439 | if (error) { | |
440 | xfs_blkdev_put(logdev); | |
441 | return error; | |
442 | } | |
443 | ||
444 | if (rtdev == ddev || rtdev == logdev) { | |
445 | cmn_err(CE_WARN, | |
446 | "XFS: Cannot mount filesystem with identical rtdev and ddev/logdev."); | |
447 | xfs_blkdev_put(logdev); | |
448 | xfs_blkdev_put(rtdev); | |
449 | return EINVAL; | |
450 | } | |
451 | } | |
452 | ||
453 | /* | |
454 | * Setup xfs_mount buffer target pointers | |
455 | */ | |
456 | error = ENOMEM; | |
457 | mp->m_ddev_targp = xfs_alloc_buftarg(ddev, 0); | |
458 | if (!mp->m_ddev_targp) { | |
459 | xfs_blkdev_put(logdev); | |
460 | xfs_blkdev_put(rtdev); | |
461 | return error; | |
462 | } | |
463 | if (rtdev) { | |
464 | mp->m_rtdev_targp = xfs_alloc_buftarg(rtdev, 1); | |
465 | if (!mp->m_rtdev_targp) | |
466 | goto error0; | |
467 | } | |
468 | mp->m_logdev_targp = (logdev && logdev != ddev) ? | |
469 | xfs_alloc_buftarg(logdev, 1) : mp->m_ddev_targp; | |
470 | if (!mp->m_logdev_targp) | |
471 | goto error0; | |
472 | ||
473 | /* | |
474 | * Setup flags based on mount(2) options and then the superblock | |
475 | */ | |
476 | error = xfs_start_flags(vfsp, args, mp); | |
477 | if (error) | |
478 | goto error1; | |
479 | error = xfs_readsb(mp); | |
480 | if (error) | |
481 | goto error1; | |
482 | error = xfs_finish_flags(vfsp, args, mp); | |
483 | if (error) | |
484 | goto error2; | |
485 | ||
486 | /* | |
487 | * Setup xfs_mount buffer target pointers based on superblock | |
488 | */ | |
489 | error = xfs_setsize_buftarg(mp->m_ddev_targp, mp->m_sb.sb_blocksize, | |
490 | mp->m_sb.sb_sectsize); | |
491 | if (!error && logdev && logdev != ddev) { | |
492 | unsigned int log_sector_size = BBSIZE; | |
493 | ||
494 | if (XFS_SB_VERSION_HASSECTOR(&mp->m_sb)) | |
495 | log_sector_size = mp->m_sb.sb_logsectsize; | |
496 | error = xfs_setsize_buftarg(mp->m_logdev_targp, | |
497 | mp->m_sb.sb_blocksize, | |
498 | log_sector_size); | |
499 | } | |
500 | if (!error && rtdev) | |
501 | error = xfs_setsize_buftarg(mp->m_rtdev_targp, | |
502 | mp->m_sb.sb_blocksize, | |
503 | mp->m_sb.sb_sectsize); | |
504 | if (error) | |
505 | goto error2; | |
506 | ||
507 | error = XFS_IOINIT(vfsp, args, flags); | |
f538d4da CH |
508 | if (error) |
509 | goto error2; | |
510 | ||
511 | if ((args->flags & XFSMNT_BARRIER) && | |
512 | !(XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY)) | |
513 | xfs_mountfs_check_barriers(mp); | |
514 | return 0; | |
515 | ||
1da177e4 LT |
516 | error2: |
517 | if (mp->m_sb_bp) | |
518 | xfs_freesb(mp); | |
519 | error1: | |
520 | xfs_binval(mp->m_ddev_targp); | |
521 | if (logdev && logdev != ddev) | |
522 | xfs_binval(mp->m_logdev_targp); | |
523 | if (rtdev) | |
524 | xfs_binval(mp->m_rtdev_targp); | |
525 | error0: | |
526 | xfs_unmountfs_close(mp, credp); | |
527 | return error; | |
528 | } | |
529 | ||
530 | STATIC int | |
531 | xfs_unmount( | |
532 | bhv_desc_t *bdp, | |
533 | int flags, | |
534 | cred_t *credp) | |
535 | { | |
536 | struct vfs *vfsp = bhvtovfs(bdp); | |
537 | xfs_mount_t *mp = XFS_BHVTOM(bdp); | |
538 | xfs_inode_t *rip; | |
539 | vnode_t *rvp; | |
540 | int unmount_event_wanted = 0; | |
541 | int unmount_event_flags = 0; | |
542 | int xfs_unmountfs_needed = 0; | |
543 | int error; | |
544 | ||
545 | rip = mp->m_rootip; | |
546 | rvp = XFS_ITOV(rip); | |
547 | ||
548 | if (vfsp->vfs_flag & VFS_DMI) { | |
549 | error = XFS_SEND_PREUNMOUNT(mp, vfsp, | |
550 | rvp, DM_RIGHT_NULL, rvp, DM_RIGHT_NULL, | |
551 | NULL, NULL, 0, 0, | |
552 | (mp->m_dmevmask & (1<<DM_EVENT_PREUNMOUNT))? | |
553 | 0:DM_FLAGS_UNWANTED); | |
554 | if (error) | |
555 | return XFS_ERROR(error); | |
556 | unmount_event_wanted = 1; | |
557 | unmount_event_flags = (mp->m_dmevmask & (1<<DM_EVENT_UNMOUNT))? | |
558 | 0 : DM_FLAGS_UNWANTED; | |
559 | } | |
560 | ||
561 | /* | |
562 | * First blow any referenced inode from this file system | |
563 | * out of the reference cache, and delete the timer. | |
564 | */ | |
565 | xfs_refcache_purge_mp(mp); | |
566 | ||
567 | XFS_bflush(mp->m_ddev_targp); | |
568 | error = xfs_unmount_flush(mp, 0); | |
569 | if (error) | |
570 | goto out; | |
571 | ||
572 | ASSERT(vn_count(rvp) == 1); | |
573 | ||
574 | /* | |
575 | * Drop the reference count | |
576 | */ | |
577 | VN_RELE(rvp); | |
578 | ||
579 | /* | |
580 | * If we're forcing a shutdown, typically because of a media error, | |
581 | * we want to make sure we invalidate dirty pages that belong to | |
582 | * referenced vnodes as well. | |
583 | */ | |
584 | if (XFS_FORCED_SHUTDOWN(mp)) { | |
585 | error = xfs_sync(&mp->m_bhv, | |
586 | (SYNC_WAIT | SYNC_CLOSE), credp); | |
587 | ASSERT(error != EFSCORRUPTED); | |
588 | } | |
589 | xfs_unmountfs_needed = 1; | |
590 | ||
591 | out: | |
592 | /* Send DMAPI event, if required. | |
593 | * Then do xfs_unmountfs() if needed. | |
594 | * Then return error (or zero). | |
595 | */ | |
596 | if (unmount_event_wanted) { | |
597 | /* Note: mp structure must still exist for | |
598 | * XFS_SEND_UNMOUNT() call. | |
599 | */ | |
600 | XFS_SEND_UNMOUNT(mp, vfsp, error == 0 ? rvp : NULL, | |
601 | DM_RIGHT_NULL, 0, error, unmount_event_flags); | |
602 | } | |
603 | if (xfs_unmountfs_needed) { | |
604 | /* | |
605 | * Call common unmount function to flush to disk | |
606 | * and free the super block buffer & mount structures. | |
607 | */ | |
608 | xfs_unmountfs(mp, credp); | |
609 | } | |
610 | ||
611 | return XFS_ERROR(error); | |
612 | } | |
613 | ||
f898d6c0 CH |
614 | STATIC int |
615 | xfs_quiesce_fs( | |
616 | xfs_mount_t *mp) | |
617 | { | |
618 | int count = 0, pincount; | |
619 | ||
620 | xfs_refcache_purge_mp(mp); | |
621 | xfs_flush_buftarg(mp->m_ddev_targp, 0); | |
622 | xfs_finish_reclaim_all(mp, 0); | |
623 | ||
624 | /* This loop must run at least twice. | |
625 | * The first instance of the loop will flush | |
626 | * most meta data but that will generate more | |
627 | * meta data (typically directory updates). | |
628 | * Which then must be flushed and logged before | |
629 | * we can write the unmount record. | |
630 | */ | |
631 | do { | |
632 | xfs_syncsub(mp, SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT, 0, NULL); | |
633 | pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1); | |
634 | if (!pincount) { | |
635 | delay(50); | |
636 | count++; | |
637 | } | |
638 | } while (count < 2); | |
639 | ||
640 | return 0; | |
641 | } | |
1da177e4 LT |
642 | |
643 | STATIC int | |
644 | xfs_mntupdate( | |
645 | bhv_desc_t *bdp, | |
646 | int *flags, | |
647 | struct xfs_mount_args *args) | |
648 | { | |
649 | struct vfs *vfsp = bhvtovfs(bdp); | |
650 | xfs_mount_t *mp = XFS_BHVTOM(bdp); | |
f898d6c0 | 651 | int error; |
1da177e4 LT |
652 | |
653 | if (args->flags & XFSMNT_NOATIME) | |
654 | mp->m_flags |= XFS_MOUNT_NOATIME; | |
655 | else | |
656 | mp->m_flags &= ~XFS_MOUNT_NOATIME; | |
657 | ||
f538d4da CH |
658 | if ((vfsp->vfs_flag & VFS_RDONLY) && |
659 | !(*flags & MS_RDONLY)) { | |
660 | vfsp->vfs_flag &= ~VFS_RDONLY; | |
661 | ||
662 | if (args->flags & XFSMNT_BARRIER) | |
663 | xfs_mountfs_check_barriers(mp); | |
1da177e4 LT |
664 | } |
665 | ||
f538d4da CH |
666 | if (!(vfsp->vfs_flag & VFS_RDONLY) && |
667 | (*flags & MS_RDONLY)) { | |
668 | VFS_SYNC(vfsp, SYNC_FSDATA|SYNC_BDFLUSH|SYNC_ATTR, NULL, error); | |
669 | ||
f898d6c0 | 670 | xfs_quiesce_fs(mp); |
1da177e4 LT |
671 | |
672 | /* Ok now write out an unmount record */ | |
673 | xfs_log_unmount_write(mp); | |
674 | xfs_unmountfs_writesb(mp); | |
675 | vfsp->vfs_flag |= VFS_RDONLY; | |
1da177e4 LT |
676 | } |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
681 | /* | |
682 | * xfs_unmount_flush implements a set of flush operation on special | |
683 | * inodes, which are needed as a separate set of operations so that | |
684 | * they can be called as part of relocation process. | |
685 | */ | |
686 | int | |
687 | xfs_unmount_flush( | |
688 | xfs_mount_t *mp, /* Mount structure we are getting | |
689 | rid of. */ | |
690 | int relocation) /* Called from vfs relocation. */ | |
691 | { | |
692 | xfs_inode_t *rip = mp->m_rootip; | |
693 | xfs_inode_t *rbmip; | |
694 | xfs_inode_t *rsumip = NULL; | |
695 | vnode_t *rvp = XFS_ITOV(rip); | |
696 | int error; | |
697 | ||
698 | xfs_ilock(rip, XFS_ILOCK_EXCL); | |
699 | xfs_iflock(rip); | |
700 | ||
701 | /* | |
702 | * Flush out the real time inodes. | |
703 | */ | |
704 | if ((rbmip = mp->m_rbmip) != NULL) { | |
705 | xfs_ilock(rbmip, XFS_ILOCK_EXCL); | |
706 | xfs_iflock(rbmip); | |
707 | error = xfs_iflush(rbmip, XFS_IFLUSH_SYNC); | |
708 | xfs_iunlock(rbmip, XFS_ILOCK_EXCL); | |
709 | ||
710 | if (error == EFSCORRUPTED) | |
711 | goto fscorrupt_out; | |
712 | ||
713 | ASSERT(vn_count(XFS_ITOV(rbmip)) == 1); | |
714 | ||
715 | rsumip = mp->m_rsumip; | |
716 | xfs_ilock(rsumip, XFS_ILOCK_EXCL); | |
717 | xfs_iflock(rsumip); | |
718 | error = xfs_iflush(rsumip, XFS_IFLUSH_SYNC); | |
719 | xfs_iunlock(rsumip, XFS_ILOCK_EXCL); | |
720 | ||
721 | if (error == EFSCORRUPTED) | |
722 | goto fscorrupt_out; | |
723 | ||
724 | ASSERT(vn_count(XFS_ITOV(rsumip)) == 1); | |
725 | } | |
726 | ||
727 | /* | |
728 | * Synchronously flush root inode to disk | |
729 | */ | |
730 | error = xfs_iflush(rip, XFS_IFLUSH_SYNC); | |
731 | if (error == EFSCORRUPTED) | |
732 | goto fscorrupt_out2; | |
733 | ||
734 | if (vn_count(rvp) != 1 && !relocation) { | |
735 | xfs_iunlock(rip, XFS_ILOCK_EXCL); | |
736 | return XFS_ERROR(EBUSY); | |
737 | } | |
738 | ||
739 | /* | |
740 | * Release dquot that rootinode, rbmino and rsumino might be holding, | |
741 | * flush and purge the quota inodes. | |
742 | */ | |
743 | error = XFS_QM_UNMOUNT(mp); | |
744 | if (error == EFSCORRUPTED) | |
745 | goto fscorrupt_out2; | |
746 | ||
747 | if (rbmip) { | |
748 | VN_RELE(XFS_ITOV(rbmip)); | |
749 | VN_RELE(XFS_ITOV(rsumip)); | |
750 | } | |
751 | ||
752 | xfs_iunlock(rip, XFS_ILOCK_EXCL); | |
753 | return 0; | |
754 | ||
755 | fscorrupt_out: | |
756 | xfs_ifunlock(rip); | |
757 | ||
758 | fscorrupt_out2: | |
759 | xfs_iunlock(rip, XFS_ILOCK_EXCL); | |
760 | ||
761 | return XFS_ERROR(EFSCORRUPTED); | |
762 | } | |
763 | ||
764 | /* | |
765 | * xfs_root extracts the root vnode from a vfs. | |
766 | * | |
767 | * vfsp -- the vfs struct for the desired file system | |
768 | * vpp -- address of the caller's vnode pointer which should be | |
769 | * set to the desired fs root vnode | |
770 | */ | |
771 | STATIC int | |
772 | xfs_root( | |
773 | bhv_desc_t *bdp, | |
774 | vnode_t **vpp) | |
775 | { | |
776 | vnode_t *vp; | |
777 | ||
778 | vp = XFS_ITOV((XFS_BHVTOM(bdp))->m_rootip); | |
779 | VN_HOLD(vp); | |
780 | *vpp = vp; | |
781 | return 0; | |
782 | } | |
783 | ||
784 | /* | |
785 | * xfs_statvfs | |
786 | * | |
787 | * Fill in the statvfs structure for the given file system. We use | |
788 | * the superblock lock in the mount structure to ensure a consistent | |
789 | * snapshot of the counters returned. | |
790 | */ | |
791 | STATIC int | |
792 | xfs_statvfs( | |
793 | bhv_desc_t *bdp, | |
794 | xfs_statfs_t *statp, | |
795 | vnode_t *vp) | |
796 | { | |
797 | __uint64_t fakeinos; | |
798 | xfs_extlen_t lsize; | |
799 | xfs_mount_t *mp; | |
800 | xfs_sb_t *sbp; | |
801 | unsigned long s; | |
1da177e4 LT |
802 | |
803 | mp = XFS_BHVTOM(bdp); | |
804 | sbp = &(mp->m_sb); | |
805 | ||
806 | statp->f_type = XFS_SB_MAGIC; | |
807 | ||
808 | s = XFS_SB_LOCK(mp); | |
809 | statp->f_bsize = sbp->sb_blocksize; | |
810 | lsize = sbp->sb_logstart ? sbp->sb_logblocks : 0; | |
811 | statp->f_blocks = sbp->sb_dblocks - lsize; | |
812 | statp->f_bfree = statp->f_bavail = sbp->sb_fdblocks; | |
813 | fakeinos = statp->f_bfree << sbp->sb_inopblog; | |
814 | #if XFS_BIG_INUMS | |
815 | fakeinos += mp->m_inoadd; | |
816 | #endif | |
817 | statp->f_files = | |
818 | MIN(sbp->sb_icount + fakeinos, (__uint64_t)XFS_MAXINUMBER); | |
819 | if (mp->m_maxicount) | |
820 | #if XFS_BIG_INUMS | |
821 | if (!mp->m_inoadd) | |
822 | #endif | |
823 | statp->f_files = min_t(typeof(statp->f_files), | |
824 | statp->f_files, | |
825 | mp->m_maxicount); | |
826 | statp->f_ffree = statp->f_files - (sbp->sb_icount - sbp->sb_ifree); | |
827 | XFS_SB_UNLOCK(mp, s); | |
828 | ||
cde410a9 | 829 | xfs_statvfs_fsid(statp, mp); |
1da177e4 LT |
830 | statp->f_namelen = MAXNAMELEN - 1; |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | ||
836 | /* | |
837 | * xfs_sync flushes any pending I/O to file system vfsp. | |
838 | * | |
839 | * This routine is called by vfs_sync() to make sure that things make it | |
840 | * out to disk eventually, on sync() system calls to flush out everything, | |
841 | * and when the file system is unmounted. For the vfs_sync() case, all | |
842 | * we really need to do is sync out the log to make all of our meta-data | |
843 | * updates permanent (except for timestamps). For calls from pflushd(), | |
844 | * dirty pages are kept moving by calling pdflush() on the inodes | |
845 | * containing them. We also flush the inodes that we can lock without | |
846 | * sleeping and the superblock if we can lock it without sleeping from | |
847 | * vfs_sync() so that items at the tail of the log are always moving out. | |
848 | * | |
849 | * Flags: | |
850 | * SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want | |
851 | * to sleep if we can help it. All we really need | |
852 | * to do is ensure that the log is synced at least | |
853 | * periodically. We also push the inodes and | |
854 | * superblock if we can lock them without sleeping | |
855 | * and they are not pinned. | |
856 | * SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not | |
857 | * set, then we really want to lock each inode and flush | |
858 | * it. | |
859 | * SYNC_WAIT - All the flushes that take place in this call should | |
860 | * be synchronous. | |
861 | * SYNC_DELWRI - This tells us to push dirty pages associated with | |
862 | * inodes. SYNC_WAIT and SYNC_BDFLUSH are used to | |
863 | * determine if they should be flushed sync, async, or | |
864 | * delwri. | |
865 | * SYNC_CLOSE - This flag is passed when the system is being | |
866 | * unmounted. We should sync and invalidate everthing. | |
867 | * SYNC_FSDATA - This indicates that the caller would like to make | |
868 | * sure the superblock is safe on disk. We can ensure | |
869 | * this by simply makeing sure the log gets flushed | |
870 | * if SYNC_BDFLUSH is set, and by actually writing it | |
871 | * out otherwise. | |
872 | * | |
873 | */ | |
874 | /*ARGSUSED*/ | |
875 | STATIC int | |
876 | xfs_sync( | |
877 | bhv_desc_t *bdp, | |
878 | int flags, | |
879 | cred_t *credp) | |
880 | { | |
f898d6c0 | 881 | xfs_mount_t *mp = XFS_BHVTOM(bdp); |
1da177e4 | 882 | |
f898d6c0 CH |
883 | if (unlikely(flags == SYNC_QUIESCE)) |
884 | return xfs_quiesce_fs(mp); | |
885 | else | |
886 | return xfs_syncsub(mp, flags, 0, NULL); | |
1da177e4 LT |
887 | } |
888 | ||
889 | /* | |
890 | * xfs sync routine for internal use | |
891 | * | |
892 | * This routine supports all of the flags defined for the generic VFS_SYNC | |
893 | * interface as explained above under xfs_sync. In the interests of not | |
894 | * changing interfaces within the 6.5 family, additional internallly- | |
895 | * required functions are specified within a separate xflags parameter, | |
896 | * only available by calling this routine. | |
897 | * | |
898 | */ | |
ee34807a | 899 | int |
1da177e4 LT |
900 | xfs_sync_inodes( |
901 | xfs_mount_t *mp, | |
902 | int flags, | |
903 | int xflags, | |
904 | int *bypassed) | |
905 | { | |
906 | xfs_inode_t *ip = NULL; | |
907 | xfs_inode_t *ip_next; | |
908 | xfs_buf_t *bp; | |
909 | vnode_t *vp = NULL; | |
1da177e4 LT |
910 | int error; |
911 | int last_error; | |
912 | uint64_t fflag; | |
913 | uint lock_flags; | |
914 | uint base_lock_flags; | |
915 | boolean_t mount_locked; | |
916 | boolean_t vnode_refed; | |
917 | int preempt; | |
918 | xfs_dinode_t *dip; | |
919 | xfs_iptr_t *ipointer; | |
920 | #ifdef DEBUG | |
921 | boolean_t ipointer_in = B_FALSE; | |
922 | ||
923 | #define IPOINTER_SET ipointer_in = B_TRUE | |
924 | #define IPOINTER_CLR ipointer_in = B_FALSE | |
925 | #else | |
926 | #define IPOINTER_SET | |
927 | #define IPOINTER_CLR | |
928 | #endif | |
929 | ||
930 | ||
931 | /* Insert a marker record into the inode list after inode ip. The list | |
932 | * must be locked when this is called. After the call the list will no | |
933 | * longer be locked. | |
934 | */ | |
935 | #define IPOINTER_INSERT(ip, mp) { \ | |
936 | ASSERT(ipointer_in == B_FALSE); \ | |
937 | ipointer->ip_mnext = ip->i_mnext; \ | |
938 | ipointer->ip_mprev = ip; \ | |
939 | ip->i_mnext = (xfs_inode_t *)ipointer; \ | |
940 | ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \ | |
941 | preempt = 0; \ | |
942 | XFS_MOUNT_IUNLOCK(mp); \ | |
943 | mount_locked = B_FALSE; \ | |
944 | IPOINTER_SET; \ | |
945 | } | |
946 | ||
947 | /* Remove the marker from the inode list. If the marker was the only item | |
948 | * in the list then there are no remaining inodes and we should zero out | |
949 | * the whole list. If we are the current head of the list then move the head | |
950 | * past us. | |
951 | */ | |
952 | #define IPOINTER_REMOVE(ip, mp) { \ | |
953 | ASSERT(ipointer_in == B_TRUE); \ | |
954 | if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \ | |
955 | ip = ipointer->ip_mnext; \ | |
956 | ip->i_mprev = ipointer->ip_mprev; \ | |
957 | ipointer->ip_mprev->i_mnext = ip; \ | |
958 | if (mp->m_inodes == (xfs_inode_t *)ipointer) { \ | |
959 | mp->m_inodes = ip; \ | |
960 | } \ | |
961 | } else { \ | |
962 | ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \ | |
963 | mp->m_inodes = NULL; \ | |
964 | ip = NULL; \ | |
965 | } \ | |
966 | IPOINTER_CLR; \ | |
967 | } | |
968 | ||
969 | #define XFS_PREEMPT_MASK 0x7f | |
970 | ||
971 | if (bypassed) | |
972 | *bypassed = 0; | |
973 | if (XFS_MTOVFS(mp)->vfs_flag & VFS_RDONLY) | |
974 | return 0; | |
975 | error = 0; | |
976 | last_error = 0; | |
977 | preempt = 0; | |
978 | ||
979 | /* Allocate a reference marker */ | |
980 | ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP); | |
981 | ||
982 | fflag = XFS_B_ASYNC; /* default is don't wait */ | |
ee34807a | 983 | if (flags & (SYNC_BDFLUSH | SYNC_DELWRI)) |
1da177e4 LT |
984 | fflag = XFS_B_DELWRI; |
985 | if (flags & SYNC_WAIT) | |
986 | fflag = 0; /* synchronous overrides all */ | |
987 | ||
988 | base_lock_flags = XFS_ILOCK_SHARED; | |
989 | if (flags & (SYNC_DELWRI | SYNC_CLOSE)) { | |
990 | /* | |
991 | * We need the I/O lock if we're going to call any of | |
992 | * the flush/inval routines. | |
993 | */ | |
994 | base_lock_flags |= XFS_IOLOCK_SHARED; | |
995 | } | |
996 | ||
997 | XFS_MOUNT_ILOCK(mp); | |
998 | ||
999 | ip = mp->m_inodes; | |
1000 | ||
1001 | mount_locked = B_TRUE; | |
1002 | vnode_refed = B_FALSE; | |
1003 | ||
1004 | IPOINTER_CLR; | |
1005 | ||
1006 | do { | |
1007 | ASSERT(ipointer_in == B_FALSE); | |
1008 | ASSERT(vnode_refed == B_FALSE); | |
1009 | ||
1010 | lock_flags = base_lock_flags; | |
1011 | ||
1012 | /* | |
1013 | * There were no inodes in the list, just break out | |
1014 | * of the loop. | |
1015 | */ | |
1016 | if (ip == NULL) { | |
1017 | break; | |
1018 | } | |
1019 | ||
1020 | /* | |
1021 | * We found another sync thread marker - skip it | |
1022 | */ | |
1023 | if (ip->i_mount == NULL) { | |
1024 | ip = ip->i_mnext; | |
1025 | continue; | |
1026 | } | |
1027 | ||
1028 | vp = XFS_ITOV_NULL(ip); | |
1029 | ||
1030 | /* | |
1031 | * If the vnode is gone then this is being torn down, | |
1032 | * call reclaim if it is flushed, else let regular flush | |
1033 | * code deal with it later in the loop. | |
1034 | */ | |
1035 | ||
1036 | if (vp == NULL) { | |
1037 | /* Skip ones already in reclaim */ | |
1038 | if (ip->i_flags & XFS_IRECLAIM) { | |
1039 | ip = ip->i_mnext; | |
1040 | continue; | |
1041 | } | |
1042 | if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) { | |
1043 | ip = ip->i_mnext; | |
1044 | } else if ((xfs_ipincount(ip) == 0) && | |
1045 | xfs_iflock_nowait(ip)) { | |
1046 | IPOINTER_INSERT(ip, mp); | |
1047 | ||
1048 | xfs_finish_reclaim(ip, 1, | |
1049 | XFS_IFLUSH_DELWRI_ELSE_ASYNC); | |
1050 | ||
1051 | XFS_MOUNT_ILOCK(mp); | |
1052 | mount_locked = B_TRUE; | |
1053 | IPOINTER_REMOVE(ip, mp); | |
1054 | } else { | |
1055 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1056 | ip = ip->i_mnext; | |
1057 | } | |
1058 | continue; | |
1059 | } | |
1060 | ||
1061 | if (VN_BAD(vp)) { | |
1062 | ip = ip->i_mnext; | |
1063 | continue; | |
1064 | } | |
1065 | ||
1066 | if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) { | |
1067 | XFS_MOUNT_IUNLOCK(mp); | |
1068 | kmem_free(ipointer, sizeof(xfs_iptr_t)); | |
1069 | return 0; | |
1070 | } | |
1071 | ||
1072 | /* | |
1073 | * If this is just vfs_sync() or pflushd() calling | |
1074 | * then we can skip inodes for which it looks like | |
1075 | * there is nothing to do. Since we don't have the | |
1076 | * inode locked this is racey, but these are periodic | |
1077 | * calls so it doesn't matter. For the others we want | |
1078 | * to know for sure, so we at least try to lock them. | |
1079 | */ | |
1080 | if (flags & SYNC_BDFLUSH) { | |
1081 | if (((ip->i_itemp == NULL) || | |
1082 | !(ip->i_itemp->ili_format.ilf_fields & | |
1083 | XFS_ILOG_ALL)) && | |
1084 | (ip->i_update_core == 0)) { | |
1085 | ip = ip->i_mnext; | |
1086 | continue; | |
1087 | } | |
1088 | } | |
1089 | ||
1090 | /* | |
1091 | * Try to lock without sleeping. We're out of order with | |
1092 | * the inode list lock here, so if we fail we need to drop | |
1093 | * the mount lock and try again. If we're called from | |
1094 | * bdflush() here, then don't bother. | |
1095 | * | |
1096 | * The inode lock here actually coordinates with the | |
1097 | * almost spurious inode lock in xfs_ireclaim() to prevent | |
1098 | * the vnode we handle here without a reference from | |
1099 | * being freed while we reference it. If we lock the inode | |
1100 | * while it's on the mount list here, then the spurious inode | |
1101 | * lock in xfs_ireclaim() after the inode is pulled from | |
1102 | * the mount list will sleep until we release it here. | |
1103 | * This keeps the vnode from being freed while we reference | |
cdb62687 | 1104 | * it. |
1da177e4 LT |
1105 | */ |
1106 | if (xfs_ilock_nowait(ip, lock_flags) == 0) { | |
1da177e4 LT |
1107 | if ((flags & SYNC_BDFLUSH) || (vp == NULL)) { |
1108 | ip = ip->i_mnext; | |
1109 | continue; | |
1110 | } | |
1111 | ||
cdb62687 | 1112 | vp = vn_grab(vp); |
1da177e4 | 1113 | if (vp == NULL) { |
cdb62687 | 1114 | ip = ip->i_mnext; |
1da177e4 LT |
1115 | continue; |
1116 | } | |
1117 | ||
cdb62687 | 1118 | IPOINTER_INSERT(ip, mp); |
1da177e4 LT |
1119 | xfs_ilock(ip, lock_flags); |
1120 | ||
1121 | ASSERT(vp == XFS_ITOV(ip)); | |
1122 | ASSERT(ip->i_mount == mp); | |
1123 | ||
1124 | vnode_refed = B_TRUE; | |
1125 | } | |
1126 | ||
1127 | /* From here on in the loop we may have a marker record | |
1128 | * in the inode list. | |
1129 | */ | |
1130 | ||
1131 | if ((flags & SYNC_CLOSE) && (vp != NULL)) { | |
1132 | /* | |
1133 | * This is the shutdown case. We just need to | |
1134 | * flush and invalidate all the pages associated | |
1135 | * with the inode. Drop the inode lock since | |
1136 | * we can't hold it across calls to the buffer | |
1137 | * cache. | |
1138 | * | |
1139 | * We don't set the VREMAPPING bit in the vnode | |
1140 | * here, because we don't hold the vnode lock | |
1141 | * exclusively. It doesn't really matter, though, | |
1142 | * because we only come here when we're shutting | |
1143 | * down anyway. | |
1144 | */ | |
1145 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1146 | ||
1147 | if (XFS_FORCED_SHUTDOWN(mp)) { | |
1148 | VOP_TOSS_PAGES(vp, 0, -1, FI_REMAPF); | |
1149 | } else { | |
1150 | VOP_FLUSHINVAL_PAGES(vp, 0, -1, FI_REMAPF); | |
1151 | } | |
1152 | ||
1153 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1154 | ||
1155 | } else if ((flags & SYNC_DELWRI) && (vp != NULL)) { | |
1156 | if (VN_DIRTY(vp)) { | |
1157 | /* We need to have dropped the lock here, | |
1158 | * so insert a marker if we have not already | |
1159 | * done so. | |
1160 | */ | |
1161 | if (mount_locked) { | |
1162 | IPOINTER_INSERT(ip, mp); | |
1163 | } | |
1164 | ||
1165 | /* | |
1166 | * Drop the inode lock since we can't hold it | |
1167 | * across calls to the buffer cache. | |
1168 | */ | |
1169 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1170 | VOP_FLUSH_PAGES(vp, (xfs_off_t)0, -1, | |
1171 | fflag, FI_NONE, error); | |
1172 | xfs_ilock(ip, XFS_ILOCK_SHARED); | |
1173 | } | |
1174 | ||
1175 | } | |
1176 | ||
1177 | if (flags & SYNC_BDFLUSH) { | |
1178 | if ((flags & SYNC_ATTR) && | |
1179 | ((ip->i_update_core) || | |
1180 | ((ip->i_itemp != NULL) && | |
1181 | (ip->i_itemp->ili_format.ilf_fields != 0)))) { | |
1182 | ||
1183 | /* Insert marker and drop lock if not already | |
1184 | * done. | |
1185 | */ | |
1186 | if (mount_locked) { | |
1187 | IPOINTER_INSERT(ip, mp); | |
1188 | } | |
1189 | ||
1190 | /* | |
1191 | * We don't want the periodic flushing of the | |
1192 | * inodes by vfs_sync() to interfere with | |
1193 | * I/O to the file, especially read I/O | |
1194 | * where it is only the access time stamp | |
1195 | * that is being flushed out. To prevent | |
1196 | * long periods where we have both inode | |
1197 | * locks held shared here while reading the | |
1198 | * inode's buffer in from disk, we drop the | |
1199 | * inode lock while reading in the inode | |
1200 | * buffer. We have to release the buffer | |
1201 | * and reacquire the inode lock so that they | |
1202 | * are acquired in the proper order (inode | |
1203 | * locks first). The buffer will go at the | |
1204 | * end of the lru chain, though, so we can | |
1205 | * expect it to still be there when we go | |
1206 | * for it again in xfs_iflush(). | |
1207 | */ | |
1208 | if ((xfs_ipincount(ip) == 0) && | |
1209 | xfs_iflock_nowait(ip)) { | |
1210 | ||
1211 | xfs_ifunlock(ip); | |
1212 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1213 | ||
1214 | error = xfs_itobp(mp, NULL, ip, | |
1215 | &dip, &bp, 0); | |
1216 | if (!error) { | |
1217 | xfs_buf_relse(bp); | |
1218 | } else { | |
1219 | /* Bailing out, remove the | |
1220 | * marker and free it. | |
1221 | */ | |
1222 | XFS_MOUNT_ILOCK(mp); | |
1223 | ||
1224 | IPOINTER_REMOVE(ip, mp); | |
1225 | ||
1226 | XFS_MOUNT_IUNLOCK(mp); | |
1227 | ||
1228 | ASSERT(!(lock_flags & | |
1229 | XFS_IOLOCK_SHARED)); | |
1230 | ||
1231 | kmem_free(ipointer, | |
1232 | sizeof(xfs_iptr_t)); | |
1233 | return (0); | |
1234 | } | |
1235 | ||
1236 | /* | |
1237 | * Since we dropped the inode lock, | |
1238 | * the inode may have been reclaimed. | |
1239 | * Therefore, we reacquire the mount | |
1240 | * lock and check to see if we were the | |
1241 | * inode reclaimed. If this happened | |
1242 | * then the ipointer marker will no | |
1243 | * longer point back at us. In this | |
1244 | * case, move ip along to the inode | |
1245 | * after the marker, remove the marker | |
1246 | * and continue. | |
1247 | */ | |
1248 | XFS_MOUNT_ILOCK(mp); | |
1249 | mount_locked = B_TRUE; | |
1250 | ||
1251 | if (ip != ipointer->ip_mprev) { | |
1252 | IPOINTER_REMOVE(ip, mp); | |
1253 | ||
1254 | ASSERT(!vnode_refed); | |
1255 | ASSERT(!(lock_flags & | |
1256 | XFS_IOLOCK_SHARED)); | |
1257 | continue; | |
1258 | } | |
1259 | ||
1260 | ASSERT(ip->i_mount == mp); | |
1261 | ||
1262 | if (xfs_ilock_nowait(ip, | |
1263 | XFS_ILOCK_SHARED) == 0) { | |
1264 | ASSERT(ip->i_mount == mp); | |
1265 | /* | |
1266 | * We failed to reacquire | |
1267 | * the inode lock without | |
1268 | * sleeping, so just skip | |
1269 | * the inode for now. We | |
1270 | * clear the ILOCK bit from | |
1271 | * the lock_flags so that we | |
1272 | * won't try to drop a lock | |
1273 | * we don't hold below. | |
1274 | */ | |
1275 | lock_flags &= ~XFS_ILOCK_SHARED; | |
1276 | IPOINTER_REMOVE(ip_next, mp); | |
1277 | } else if ((xfs_ipincount(ip) == 0) && | |
1278 | xfs_iflock_nowait(ip)) { | |
1279 | ASSERT(ip->i_mount == mp); | |
1280 | /* | |
1281 | * Since this is vfs_sync() | |
1282 | * calling we only flush the | |
1283 | * inode out if we can lock | |
1284 | * it without sleeping and | |
1285 | * it is not pinned. Drop | |
1286 | * the mount lock here so | |
1287 | * that we don't hold it for | |
1288 | * too long. We already have | |
1289 | * a marker in the list here. | |
1290 | */ | |
1291 | XFS_MOUNT_IUNLOCK(mp); | |
1292 | mount_locked = B_FALSE; | |
1293 | error = xfs_iflush(ip, | |
1294 | XFS_IFLUSH_DELWRI); | |
1295 | } else { | |
1296 | ASSERT(ip->i_mount == mp); | |
1297 | IPOINTER_REMOVE(ip_next, mp); | |
1298 | } | |
1299 | } | |
1300 | ||
1301 | } | |
1302 | ||
1303 | } else { | |
1304 | if ((flags & SYNC_ATTR) && | |
1305 | ((ip->i_update_core) || | |
1306 | ((ip->i_itemp != NULL) && | |
1307 | (ip->i_itemp->ili_format.ilf_fields != 0)))) { | |
1308 | if (mount_locked) { | |
1309 | IPOINTER_INSERT(ip, mp); | |
1310 | } | |
1311 | ||
1312 | if (flags & SYNC_WAIT) { | |
1313 | xfs_iflock(ip); | |
1314 | error = xfs_iflush(ip, | |
1315 | XFS_IFLUSH_SYNC); | |
1316 | } else { | |
1317 | /* | |
1318 | * If we can't acquire the flush | |
1319 | * lock, then the inode is already | |
1320 | * being flushed so don't bother | |
1321 | * waiting. If we can lock it then | |
1322 | * do a delwri flush so we can | |
1323 | * combine multiple inode flushes | |
1324 | * in each disk write. | |
1325 | */ | |
1326 | if (xfs_iflock_nowait(ip)) { | |
1327 | error = xfs_iflush(ip, | |
1328 | XFS_IFLUSH_DELWRI); | |
1329 | } | |
1330 | else if (bypassed) | |
1331 | (*bypassed)++; | |
1332 | } | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | if (lock_flags != 0) { | |
1337 | xfs_iunlock(ip, lock_flags); | |
1338 | } | |
1339 | ||
1340 | if (vnode_refed) { | |
1341 | /* | |
1342 | * If we had to take a reference on the vnode | |
1343 | * above, then wait until after we've unlocked | |
1344 | * the inode to release the reference. This is | |
1345 | * because we can be already holding the inode | |
1346 | * lock when VN_RELE() calls xfs_inactive(). | |
1347 | * | |
1348 | * Make sure to drop the mount lock before calling | |
1349 | * VN_RELE() so that we don't trip over ourselves if | |
1350 | * we have to go for the mount lock again in the | |
1351 | * inactive code. | |
1352 | */ | |
1353 | if (mount_locked) { | |
1354 | IPOINTER_INSERT(ip, mp); | |
1355 | } | |
1356 | ||
1357 | VN_RELE(vp); | |
1358 | ||
1359 | vnode_refed = B_FALSE; | |
1360 | } | |
1361 | ||
1362 | if (error) { | |
1363 | last_error = error; | |
1364 | } | |
1365 | ||
1366 | /* | |
1367 | * bail out if the filesystem is corrupted. | |
1368 | */ | |
1369 | if (error == EFSCORRUPTED) { | |
1370 | if (!mount_locked) { | |
1371 | XFS_MOUNT_ILOCK(mp); | |
1372 | IPOINTER_REMOVE(ip, mp); | |
1373 | } | |
1374 | XFS_MOUNT_IUNLOCK(mp); | |
1375 | ASSERT(ipointer_in == B_FALSE); | |
1376 | kmem_free(ipointer, sizeof(xfs_iptr_t)); | |
1377 | return XFS_ERROR(error); | |
1378 | } | |
1379 | ||
1380 | /* Let other threads have a chance at the mount lock | |
1381 | * if we have looped many times without dropping the | |
1382 | * lock. | |
1383 | */ | |
1384 | if ((++preempt & XFS_PREEMPT_MASK) == 0) { | |
1385 | if (mount_locked) { | |
1386 | IPOINTER_INSERT(ip, mp); | |
1387 | } | |
1388 | } | |
1389 | ||
1390 | if (mount_locked == B_FALSE) { | |
1391 | XFS_MOUNT_ILOCK(mp); | |
1392 | mount_locked = B_TRUE; | |
1393 | IPOINTER_REMOVE(ip, mp); | |
1394 | continue; | |
1395 | } | |
1396 | ||
1397 | ASSERT(ipointer_in == B_FALSE); | |
1398 | ip = ip->i_mnext; | |
1399 | ||
1400 | } while (ip != mp->m_inodes); | |
1401 | ||
1402 | XFS_MOUNT_IUNLOCK(mp); | |
1403 | ||
1404 | ASSERT(ipointer_in == B_FALSE); | |
1405 | ||
1406 | kmem_free(ipointer, sizeof(xfs_iptr_t)); | |
1407 | return XFS_ERROR(last_error); | |
1408 | } | |
1409 | ||
1410 | /* | |
1411 | * xfs sync routine for internal use | |
1412 | * | |
1413 | * This routine supports all of the flags defined for the generic VFS_SYNC | |
1414 | * interface as explained above under xfs_sync. In the interests of not | |
1415 | * changing interfaces within the 6.5 family, additional internallly- | |
1416 | * required functions are specified within a separate xflags parameter, | |
1417 | * only available by calling this routine. | |
1418 | * | |
1419 | */ | |
1420 | int | |
1421 | xfs_syncsub( | |
1422 | xfs_mount_t *mp, | |
1423 | int flags, | |
1424 | int xflags, | |
1425 | int *bypassed) | |
1426 | { | |
1427 | int error = 0; | |
1428 | int last_error = 0; | |
1429 | uint log_flags = XFS_LOG_FORCE; | |
1430 | xfs_buf_t *bp; | |
1431 | xfs_buf_log_item_t *bip; | |
1432 | ||
1433 | /* | |
1434 | * Sync out the log. This ensures that the log is periodically | |
1435 | * flushed even if there is not enough activity to fill it up. | |
1436 | */ | |
1437 | if (flags & SYNC_WAIT) | |
1438 | log_flags |= XFS_LOG_SYNC; | |
1439 | ||
1440 | xfs_log_force(mp, (xfs_lsn_t)0, log_flags); | |
1441 | ||
1442 | if (flags & (SYNC_ATTR|SYNC_DELWRI)) { | |
1443 | if (flags & SYNC_BDFLUSH) | |
1444 | xfs_finish_reclaim_all(mp, 1); | |
1445 | else | |
1446 | error = xfs_sync_inodes(mp, flags, xflags, bypassed); | |
1447 | } | |
1448 | ||
1449 | /* | |
1450 | * Flushing out dirty data above probably generated more | |
1451 | * log activity, so if this isn't vfs_sync() then flush | |
1452 | * the log again. | |
1453 | */ | |
1454 | if (flags & SYNC_DELWRI) { | |
1455 | xfs_log_force(mp, (xfs_lsn_t)0, log_flags); | |
1456 | } | |
1457 | ||
1458 | if (flags & SYNC_FSDATA) { | |
1459 | /* | |
1460 | * If this is vfs_sync() then only sync the superblock | |
1461 | * if we can lock it without sleeping and it is not pinned. | |
1462 | */ | |
1463 | if (flags & SYNC_BDFLUSH) { | |
1464 | bp = xfs_getsb(mp, XFS_BUF_TRYLOCK); | |
1465 | if (bp != NULL) { | |
1466 | bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*); | |
1467 | if ((bip != NULL) && | |
1468 | xfs_buf_item_dirty(bip)) { | |
1469 | if (!(XFS_BUF_ISPINNED(bp))) { | |
1470 | XFS_BUF_ASYNC(bp); | |
1471 | error = xfs_bwrite(mp, bp); | |
1472 | } else { | |
1473 | xfs_buf_relse(bp); | |
1474 | } | |
1475 | } else { | |
1476 | xfs_buf_relse(bp); | |
1477 | } | |
1478 | } | |
1479 | } else { | |
1480 | bp = xfs_getsb(mp, 0); | |
1481 | /* | |
1482 | * If the buffer is pinned then push on the log so | |
1483 | * we won't get stuck waiting in the write for | |
1484 | * someone, maybe ourselves, to flush the log. | |
1485 | * Even though we just pushed the log above, we | |
1486 | * did not have the superblock buffer locked at | |
1487 | * that point so it can become pinned in between | |
1488 | * there and here. | |
1489 | */ | |
1490 | if (XFS_BUF_ISPINNED(bp)) | |
1491 | xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE); | |
1492 | if (flags & SYNC_WAIT) | |
1493 | XFS_BUF_UNASYNC(bp); | |
1494 | else | |
1495 | XFS_BUF_ASYNC(bp); | |
1496 | error = xfs_bwrite(mp, bp); | |
1497 | } | |
1498 | if (error) { | |
1499 | last_error = error; | |
1500 | } | |
1501 | } | |
1502 | ||
1503 | /* | |
1504 | * If this is the periodic sync, then kick some entries out of | |
1505 | * the reference cache. This ensures that idle entries are | |
1506 | * eventually kicked out of the cache. | |
1507 | */ | |
1508 | if (flags & SYNC_REFCACHE) { | |
cde410a9 NS |
1509 | if (flags & SYNC_WAIT) |
1510 | xfs_refcache_purge_mp(mp); | |
1511 | else | |
1512 | xfs_refcache_purge_some(mp); | |
1da177e4 LT |
1513 | } |
1514 | ||
1515 | /* | |
1516 | * Now check to see if the log needs a "dummy" transaction. | |
1517 | */ | |
1518 | ||
1519 | if (!(flags & SYNC_REMOUNT) && xfs_log_need_covered(mp)) { | |
1520 | xfs_trans_t *tp; | |
1521 | xfs_inode_t *ip; | |
1522 | ||
1523 | /* | |
1524 | * Put a dummy transaction in the log to tell | |
1525 | * recovery that all others are OK. | |
1526 | */ | |
1527 | tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1); | |
1528 | if ((error = xfs_trans_reserve(tp, 0, | |
1529 | XFS_ICHANGE_LOG_RES(mp), | |
1530 | 0, 0, 0))) { | |
1531 | xfs_trans_cancel(tp, 0); | |
1532 | return error; | |
1533 | } | |
1534 | ||
1535 | ip = mp->m_rootip; | |
1536 | xfs_ilock(ip, XFS_ILOCK_EXCL); | |
1537 | ||
1538 | xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); | |
1539 | xfs_trans_ihold(tp, ip); | |
1540 | xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); | |
1541 | error = xfs_trans_commit(tp, 0, NULL); | |
1542 | xfs_iunlock(ip, XFS_ILOCK_EXCL); | |
1543 | xfs_log_force(mp, (xfs_lsn_t)0, log_flags); | |
1544 | } | |
1545 | ||
1546 | /* | |
1547 | * When shutting down, we need to insure that the AIL is pushed | |
1548 | * to disk or the filesystem can appear corrupt from the PROM. | |
1549 | */ | |
1550 | if ((flags & (SYNC_CLOSE|SYNC_WAIT)) == (SYNC_CLOSE|SYNC_WAIT)) { | |
1551 | XFS_bflush(mp->m_ddev_targp); | |
1552 | if (mp->m_rtdev_targp) { | |
1553 | XFS_bflush(mp->m_rtdev_targp); | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | return XFS_ERROR(last_error); | |
1558 | } | |
1559 | ||
1560 | /* | |
1561 | * xfs_vget - called by DMAPI and NFSD to get vnode from file handle | |
1562 | */ | |
1563 | STATIC int | |
1564 | xfs_vget( | |
1565 | bhv_desc_t *bdp, | |
1566 | vnode_t **vpp, | |
1567 | fid_t *fidp) | |
1568 | { | |
1569 | xfs_mount_t *mp = XFS_BHVTOM(bdp); | |
1570 | xfs_fid_t *xfid = (struct xfs_fid *)fidp; | |
1571 | xfs_inode_t *ip; | |
1572 | int error; | |
1573 | xfs_ino_t ino; | |
1574 | unsigned int igen; | |
1575 | ||
1576 | /* | |
1577 | * Invalid. Since handles can be created in user space and passed in | |
1578 | * via gethandle(), this is not cause for a panic. | |
1579 | */ | |
1580 | if (xfid->xfs_fid_len != sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) | |
1581 | return XFS_ERROR(EINVAL); | |
1582 | ||
1583 | ino = xfid->xfs_fid_ino; | |
1584 | igen = xfid->xfs_fid_gen; | |
1585 | ||
1586 | /* | |
1587 | * NFS can sometimes send requests for ino 0. Fail them gracefully. | |
1588 | */ | |
1589 | if (ino == 0) | |
1590 | return XFS_ERROR(ESTALE); | |
1591 | ||
1592 | error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0); | |
1593 | if (error) { | |
1594 | *vpp = NULL; | |
1595 | return error; | |
1596 | } | |
1597 | ||
1598 | if (ip == NULL) { | |
1599 | *vpp = NULL; | |
1600 | return XFS_ERROR(EIO); | |
1601 | } | |
1602 | ||
1603 | if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) { | |
1604 | xfs_iput_new(ip, XFS_ILOCK_SHARED); | |
1605 | *vpp = NULL; | |
1606 | return XFS_ERROR(ENOENT); | |
1607 | } | |
1608 | ||
1609 | *vpp = XFS_ITOV(ip); | |
1610 | xfs_iunlock(ip, XFS_ILOCK_SHARED); | |
1611 | return 0; | |
1612 | } | |
1613 | ||
1614 | ||
1615 | #define MNTOPT_LOGBUFS "logbufs" /* number of XFS log buffers */ | |
1616 | #define MNTOPT_LOGBSIZE "logbsize" /* size of XFS log buffers */ | |
1617 | #define MNTOPT_LOGDEV "logdev" /* log device */ | |
1618 | #define MNTOPT_RTDEV "rtdev" /* realtime I/O device */ | |
1619 | #define MNTOPT_BIOSIZE "biosize" /* log2 of preferred buffered io size */ | |
1620 | #define MNTOPT_WSYNC "wsync" /* safe-mode nfs compatible mount */ | |
1621 | #define MNTOPT_INO64 "ino64" /* force inodes into 64-bit range */ | |
1622 | #define MNTOPT_NOALIGN "noalign" /* turn off stripe alignment */ | |
1623 | #define MNTOPT_SWALLOC "swalloc" /* turn on stripe width allocation */ | |
1624 | #define MNTOPT_SUNIT "sunit" /* data volume stripe unit */ | |
1625 | #define MNTOPT_SWIDTH "swidth" /* data volume stripe width */ | |
1626 | #define MNTOPT_NOUUID "nouuid" /* ignore filesystem UUID */ | |
1627 | #define MNTOPT_MTPT "mtpt" /* filesystem mount point */ | |
e69a333b NS |
1628 | #define MNTOPT_GRPID "grpid" /* group-ID from parent directory */ |
1629 | #define MNTOPT_NOGRPID "nogrpid" /* group-ID from current process */ | |
1630 | #define MNTOPT_BSDGROUPS "bsdgroups" /* group-ID from parent directory */ | |
1631 | #define MNTOPT_SYSVGROUPS "sysvgroups" /* group-ID from current process */ | |
1f443ad7 | 1632 | #define MNTOPT_ALLOCSIZE "allocsize" /* preferred allocation size */ |
1da177e4 LT |
1633 | #define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */ |
1634 | #define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */ | |
f538d4da | 1635 | #define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and |
d8cc890d | 1636 | * unwritten extent conversion */ |
1da177e4 LT |
1637 | #define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */ |
1638 | #define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */ | |
1639 | #define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */ | |
1640 | #define MNTOPT_NOIKEEP "noikeep" /* free empty inode clusters */ | |
e8c8b3a7 DC |
1641 | #define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */ |
1642 | #define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes | |
1643 | * in stat(). */ | |
d8cc890d NS |
1644 | #define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */ |
1645 | #define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */ | |
1da177e4 | 1646 | |
1f443ad7 NS |
1647 | STATIC unsigned long |
1648 | suffix_strtoul(const char *cp, char **endp, unsigned int base) | |
1649 | { | |
1650 | int last, shift_left_factor = 0; | |
1651 | char *value = (char *)cp; | |
1652 | ||
1653 | last = strlen(value) - 1; | |
1654 | if (value[last] == 'K' || value[last] == 'k') { | |
1655 | shift_left_factor = 10; | |
1656 | value[last] = '\0'; | |
1657 | } | |
1658 | if (value[last] == 'M' || value[last] == 'm') { | |
1659 | shift_left_factor = 20; | |
1660 | value[last] = '\0'; | |
1661 | } | |
1662 | if (value[last] == 'G' || value[last] == 'g') { | |
1663 | shift_left_factor = 30; | |
1664 | value[last] = '\0'; | |
1665 | } | |
1666 | ||
1667 | return simple_strtoul(cp, endp, base) << shift_left_factor; | |
1668 | } | |
1da177e4 | 1669 | |
ba0f32d4 | 1670 | STATIC int |
1da177e4 LT |
1671 | xfs_parseargs( |
1672 | struct bhv_desc *bhv, | |
1673 | char *options, | |
1674 | struct xfs_mount_args *args, | |
1675 | int update) | |
1676 | { | |
1677 | struct vfs *vfsp = bhvtovfs(bhv); | |
1678 | char *this_char, *value, *eov; | |
1679 | int dsunit, dswidth, vol_dsunit, vol_dswidth; | |
1680 | int iosize; | |
1681 | ||
e718eeb4 | 1682 | args->flags2 |= XFSMNT2_COMPAT_IOSIZE; |
8a319ae4 NS |
1683 | args->flags |= XFSMNT_COMPAT_ATTR; |
1684 | ||
1da177e4 LT |
1685 | #if 0 /* XXX: off by default, until some remaining issues ironed out */ |
1686 | args->flags |= XFSMNT_IDELETE; /* default to on */ | |
1687 | #endif | |
1688 | ||
1689 | if (!options) | |
05db218a | 1690 | goto done; |
1da177e4 LT |
1691 | |
1692 | iosize = dsunit = dswidth = vol_dsunit = vol_dswidth = 0; | |
1693 | ||
1694 | while ((this_char = strsep(&options, ",")) != NULL) { | |
1695 | if (!*this_char) | |
1696 | continue; | |
1697 | if ((value = strchr(this_char, '=')) != NULL) | |
1698 | *value++ = 0; | |
1699 | ||
1700 | if (!strcmp(this_char, MNTOPT_LOGBUFS)) { | |
1701 | if (!value || !*value) { | |
1702 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1703 | this_char); |
1da177e4 LT |
1704 | return EINVAL; |
1705 | } | |
1706 | args->logbufs = simple_strtoul(value, &eov, 10); | |
1707 | } else if (!strcmp(this_char, MNTOPT_LOGBSIZE)) { | |
1da177e4 LT |
1708 | if (!value || !*value) { |
1709 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1710 | this_char); |
1da177e4 LT |
1711 | return EINVAL; |
1712 | } | |
1f443ad7 | 1713 | args->logbufsize = suffix_strtoul(value, &eov, 10); |
1da177e4 LT |
1714 | } else if (!strcmp(this_char, MNTOPT_LOGDEV)) { |
1715 | if (!value || !*value) { | |
1716 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1717 | this_char); |
1da177e4 LT |
1718 | return EINVAL; |
1719 | } | |
1720 | strncpy(args->logname, value, MAXNAMELEN); | |
1721 | } else if (!strcmp(this_char, MNTOPT_MTPT)) { | |
1722 | if (!value || !*value) { | |
1723 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1724 | this_char); |
1da177e4 LT |
1725 | return EINVAL; |
1726 | } | |
1727 | strncpy(args->mtpt, value, MAXNAMELEN); | |
1728 | } else if (!strcmp(this_char, MNTOPT_RTDEV)) { | |
1729 | if (!value || !*value) { | |
1730 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1731 | this_char); |
1da177e4 LT |
1732 | return EINVAL; |
1733 | } | |
1734 | strncpy(args->rtname, value, MAXNAMELEN); | |
1735 | } else if (!strcmp(this_char, MNTOPT_BIOSIZE)) { | |
1736 | if (!value || !*value) { | |
1737 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1738 | this_char); |
1da177e4 LT |
1739 | return EINVAL; |
1740 | } | |
1741 | iosize = simple_strtoul(value, &eov, 10); | |
1742 | args->flags |= XFSMNT_IOSIZE; | |
1743 | args->iosizelog = (uint8_t) iosize; | |
1f443ad7 NS |
1744 | } else if (!strcmp(this_char, MNTOPT_ALLOCSIZE)) { |
1745 | if (!value || !*value) { | |
1746 | printk("XFS: %s option requires an argument\n", | |
1747 | this_char); | |
1748 | return EINVAL; | |
1749 | } | |
1750 | iosize = suffix_strtoul(value, &eov, 10); | |
1751 | args->flags |= XFSMNT_IOSIZE; | |
1752 | args->iosizelog = ffs(iosize) - 1; | |
1da177e4 LT |
1753 | } else if (!strcmp(this_char, MNTOPT_IHASHSIZE)) { |
1754 | if (!value || !*value) { | |
1755 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1756 | this_char); |
1da177e4 LT |
1757 | return EINVAL; |
1758 | } | |
1759 | args->flags |= XFSMNT_IHASHSIZE; | |
1760 | args->ihashsize = simple_strtoul(value, &eov, 10); | |
e69a333b NS |
1761 | } else if (!strcmp(this_char, MNTOPT_GRPID) || |
1762 | !strcmp(this_char, MNTOPT_BSDGROUPS)) { | |
1763 | vfsp->vfs_flag |= VFS_GRPID; | |
1764 | } else if (!strcmp(this_char, MNTOPT_NOGRPID) || | |
1765 | !strcmp(this_char, MNTOPT_SYSVGROUPS)) { | |
1766 | vfsp->vfs_flag &= ~VFS_GRPID; | |
1da177e4 LT |
1767 | } else if (!strcmp(this_char, MNTOPT_WSYNC)) { |
1768 | args->flags |= XFSMNT_WSYNC; | |
1769 | } else if (!strcmp(this_char, MNTOPT_OSYNCISOSYNC)) { | |
1770 | args->flags |= XFSMNT_OSYNCISOSYNC; | |
1771 | } else if (!strcmp(this_char, MNTOPT_NORECOVERY)) { | |
1772 | args->flags |= XFSMNT_NORECOVERY; | |
1773 | } else if (!strcmp(this_char, MNTOPT_INO64)) { | |
1774 | args->flags |= XFSMNT_INO64; | |
1775 | #if !XFS_BIG_INUMS | |
1776 | printk("XFS: %s option not allowed on this system\n", | |
1f443ad7 | 1777 | this_char); |
1da177e4 LT |
1778 | return EINVAL; |
1779 | #endif | |
1780 | } else if (!strcmp(this_char, MNTOPT_NOALIGN)) { | |
1781 | args->flags |= XFSMNT_NOALIGN; | |
1782 | } else if (!strcmp(this_char, MNTOPT_SWALLOC)) { | |
1783 | args->flags |= XFSMNT_SWALLOC; | |
1784 | } else if (!strcmp(this_char, MNTOPT_SUNIT)) { | |
1785 | if (!value || !*value) { | |
1786 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1787 | this_char); |
1da177e4 LT |
1788 | return EINVAL; |
1789 | } | |
1790 | dsunit = simple_strtoul(value, &eov, 10); | |
1791 | } else if (!strcmp(this_char, MNTOPT_SWIDTH)) { | |
1792 | if (!value || !*value) { | |
1793 | printk("XFS: %s option requires an argument\n", | |
1f443ad7 | 1794 | this_char); |
1da177e4 LT |
1795 | return EINVAL; |
1796 | } | |
1797 | dswidth = simple_strtoul(value, &eov, 10); | |
1798 | } else if (!strcmp(this_char, MNTOPT_64BITINODE)) { | |
1799 | args->flags &= ~XFSMNT_32BITINODES; | |
1800 | #if !XFS_BIG_INUMS | |
1801 | printk("XFS: %s option not allowed on this system\n", | |
1f443ad7 | 1802 | this_char); |
1da177e4 LT |
1803 | return EINVAL; |
1804 | #endif | |
1805 | } else if (!strcmp(this_char, MNTOPT_NOUUID)) { | |
1806 | args->flags |= XFSMNT_NOUUID; | |
f538d4da CH |
1807 | } else if (!strcmp(this_char, MNTOPT_BARRIER)) { |
1808 | args->flags |= XFSMNT_BARRIER; | |
1da177e4 LT |
1809 | } else if (!strcmp(this_char, MNTOPT_IKEEP)) { |
1810 | args->flags &= ~XFSMNT_IDELETE; | |
1811 | } else if (!strcmp(this_char, MNTOPT_NOIKEEP)) { | |
1812 | args->flags |= XFSMNT_IDELETE; | |
e8c8b3a7 | 1813 | } else if (!strcmp(this_char, MNTOPT_LARGEIO)) { |
e718eeb4 | 1814 | args->flags2 &= ~XFSMNT2_COMPAT_IOSIZE; |
e8c8b3a7 | 1815 | } else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) { |
e718eeb4 | 1816 | args->flags2 |= XFSMNT2_COMPAT_IOSIZE; |
d8cc890d NS |
1817 | } else if (!strcmp(this_char, MNTOPT_ATTR2)) { |
1818 | args->flags &= ~XFSMNT_COMPAT_ATTR; | |
1819 | } else if (!strcmp(this_char, MNTOPT_NOATTR2)) { | |
1820 | args->flags |= XFSMNT_COMPAT_ATTR; | |
1da177e4 LT |
1821 | } else if (!strcmp(this_char, "osyncisdsync")) { |
1822 | /* no-op, this is now the default */ | |
1823 | printk("XFS: osyncisdsync is now the default, option is deprecated.\n"); | |
1824 | } else if (!strcmp(this_char, "irixsgid")) { | |
1825 | printk("XFS: irixsgid is now a sysctl(2) variable, option is deprecated.\n"); | |
1826 | } else { | |
1827 | printk("XFS: unknown mount option [%s].\n", this_char); | |
1828 | return EINVAL; | |
1829 | } | |
1830 | } | |
1831 | ||
1832 | if (args->flags & XFSMNT_NORECOVERY) { | |
1833 | if ((vfsp->vfs_flag & VFS_RDONLY) == 0) { | |
1834 | printk("XFS: no-recovery mounts must be read-only.\n"); | |
1835 | return EINVAL; | |
1836 | } | |
1837 | } | |
1838 | ||
1839 | if ((args->flags & XFSMNT_NOALIGN) && (dsunit || dswidth)) { | |
1840 | printk( | |
1841 | "XFS: sunit and swidth options incompatible with the noalign option\n"); | |
1842 | return EINVAL; | |
1843 | } | |
1844 | ||
1845 | if ((dsunit && !dswidth) || (!dsunit && dswidth)) { | |
1846 | printk("XFS: sunit and swidth must be specified together\n"); | |
1847 | return EINVAL; | |
1848 | } | |
1849 | ||
1850 | if (dsunit && (dswidth % dsunit != 0)) { | |
1851 | printk( | |
1852 | "XFS: stripe width (%d) must be a multiple of the stripe unit (%d)\n", | |
1853 | dswidth, dsunit); | |
1854 | return EINVAL; | |
1855 | } | |
1856 | ||
1857 | if ((args->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) { | |
1858 | if (dsunit) { | |
1859 | args->sunit = dsunit; | |
1860 | args->flags |= XFSMNT_RETERR; | |
1861 | } else { | |
1862 | args->sunit = vol_dsunit; | |
1863 | } | |
1864 | dswidth ? (args->swidth = dswidth) : | |
1865 | (args->swidth = vol_dswidth); | |
1866 | } else { | |
1867 | args->sunit = args->swidth = 0; | |
1868 | } | |
1869 | ||
05db218a | 1870 | done: |
c11e2c36 NS |
1871 | if (args->flags & XFSMNT_32BITINODES) |
1872 | vfsp->vfs_flag |= VFS_32BITINODES; | |
e718eeb4 NS |
1873 | if (args->flags2) |
1874 | args->flags |= XFSMNT_FLAGS2; | |
1da177e4 LT |
1875 | return 0; |
1876 | } | |
1877 | ||
ba0f32d4 | 1878 | STATIC int |
1da177e4 LT |
1879 | xfs_showargs( |
1880 | struct bhv_desc *bhv, | |
1881 | struct seq_file *m) | |
1882 | { | |
1883 | static struct proc_xfs_info { | |
1884 | int flag; | |
1885 | char *str; | |
1886 | } xfs_info[] = { | |
1887 | /* the few simple ones we can get from the mount struct */ | |
1888 | { XFS_MOUNT_WSYNC, "," MNTOPT_WSYNC }, | |
1889 | { XFS_MOUNT_INO64, "," MNTOPT_INO64 }, | |
1890 | { XFS_MOUNT_NOALIGN, "," MNTOPT_NOALIGN }, | |
1891 | { XFS_MOUNT_SWALLOC, "," MNTOPT_SWALLOC }, | |
1892 | { XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID }, | |
1893 | { XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY }, | |
1894 | { XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC }, | |
f538d4da | 1895 | { XFS_MOUNT_BARRIER, "," MNTOPT_BARRIER }, |
1da177e4 LT |
1896 | { XFS_MOUNT_IDELETE, "," MNTOPT_NOIKEEP }, |
1897 | { 0, NULL } | |
1898 | }; | |
1899 | struct proc_xfs_info *xfs_infop; | |
1900 | struct xfs_mount *mp = XFS_BHVTOM(bhv); | |
e69a333b | 1901 | struct vfs *vfsp = XFS_MTOVFS(mp); |
1da177e4 LT |
1902 | |
1903 | for (xfs_infop = xfs_info; xfs_infop->flag; xfs_infop++) { | |
1904 | if (mp->m_flags & xfs_infop->flag) | |
1905 | seq_puts(m, xfs_infop->str); | |
1906 | } | |
1907 | ||
1908 | if (mp->m_flags & XFS_MOUNT_IHASHSIZE) | |
1909 | seq_printf(m, "," MNTOPT_IHASHSIZE "=%d", mp->m_ihsize); | |
1910 | ||
1911 | if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) | |
cfcbbbd0 NS |
1912 | seq_printf(m, "," MNTOPT_ALLOCSIZE "=%dk", |
1913 | (int)(1 << mp->m_writeio_log) >> 10); | |
1da177e4 LT |
1914 | |
1915 | if (mp->m_logbufs > 0) | |
1916 | seq_printf(m, "," MNTOPT_LOGBUFS "=%d", mp->m_logbufs); | |
1917 | ||
1918 | if (mp->m_logbsize > 0) | |
cfcbbbd0 | 1919 | seq_printf(m, "," MNTOPT_LOGBSIZE "=%dk", mp->m_logbsize >> 10); |
1da177e4 | 1920 | |
fc1f8c1c NS |
1921 | if (mp->m_logname) |
1922 | seq_printf(m, "," MNTOPT_LOGDEV "=%s", mp->m_logname); | |
1da177e4 | 1923 | |
fc1f8c1c NS |
1924 | if (mp->m_rtname) |
1925 | seq_printf(m, "," MNTOPT_RTDEV "=%s", mp->m_rtname); | |
1da177e4 LT |
1926 | |
1927 | if (mp->m_dalign > 0) | |
1928 | seq_printf(m, "," MNTOPT_SUNIT "=%d", | |
1929 | (int)XFS_FSB_TO_BB(mp, mp->m_dalign)); | |
1930 | ||
1931 | if (mp->m_swidth > 0) | |
1932 | seq_printf(m, "," MNTOPT_SWIDTH "=%d", | |
1933 | (int)XFS_FSB_TO_BB(mp, mp->m_swidth)); | |
1934 | ||
8a319ae4 NS |
1935 | if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR)) |
1936 | seq_printf(m, "," MNTOPT_ATTR2); | |
1937 | ||
fa7e7d71 NS |
1938 | if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)) |
1939 | seq_printf(m, "," MNTOPT_LARGEIO); | |
1940 | ||
c11e2c36 NS |
1941 | if (!(vfsp->vfs_flag & VFS_32BITINODES)) |
1942 | seq_printf(m, "," MNTOPT_64BITINODE); | |
1943 | ||
e69a333b NS |
1944 | if (vfsp->vfs_flag & VFS_GRPID) |
1945 | seq_printf(m, "," MNTOPT_GRPID); | |
1946 | ||
1da177e4 LT |
1947 | return 0; |
1948 | } | |
1949 | ||
1950 | STATIC void | |
1951 | xfs_freeze( | |
1952 | bhv_desc_t *bdp) | |
1953 | { | |
1954 | xfs_mount_t *mp = XFS_BHVTOM(bdp); | |
1955 | ||
1956 | while (atomic_read(&mp->m_active_trans) > 0) | |
1957 | delay(100); | |
1958 | ||
1959 | /* Push the superblock and write an unmount record */ | |
1960 | xfs_log_unmount_write(mp); | |
1961 | xfs_unmountfs_writesb(mp); | |
1962 | } | |
1963 | ||
1964 | ||
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, | |
1981 | }; |