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Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
10 | #include <linux/sched.h> | |
11 | #include <linux/slab.h> | |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
15 | #include <linux/vmalloc.h> | |
16 | #include <linux/blkdev.h> | |
17 | #include <linux/kthread.h> | |
86384605 AD |
18 | #include <linux/namei.h> |
19 | #include <linux/mount.h> | |
5c676f6d | 20 | #include <linux/gfs2_ondisk.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d SW |
23 | #include "lm_interface.h" |
24 | #include "incore.h" | |
b3b94faa DT |
25 | #include "daemon.h" |
26 | #include "glock.h" | |
27 | #include "glops.h" | |
28 | #include "inode.h" | |
29 | #include "lm.h" | |
30 | #include "mount.h" | |
31 | #include "ops_export.h" | |
32 | #include "ops_fstype.h" | |
33 | #include "ops_super.h" | |
34 | #include "recovery.h" | |
35 | #include "rgrp.h" | |
36 | #include "super.h" | |
b3b94faa | 37 | #include "sys.h" |
5c676f6d | 38 | #include "util.h" |
b3b94faa DT |
39 | |
40 | #define DO 0 | |
41 | #define UNDO 1 | |
42 | ||
5bb76af1 RP |
43 | extern struct dentry_operations gfs2_dops; |
44 | ||
b3b94faa DT |
45 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
46 | { | |
47 | struct gfs2_sbd *sdp; | |
48 | unsigned int x; | |
49 | ||
50 | sdp = vmalloc(sizeof(struct gfs2_sbd)); | |
51 | if (!sdp) | |
52 | return NULL; | |
53 | ||
54 | memset(sdp, 0, sizeof(struct gfs2_sbd)); | |
55 | ||
5c676f6d | 56 | sb->s_fs_info = sdp; |
b3b94faa DT |
57 | sdp->sd_vfs = sb; |
58 | ||
59 | gfs2_tune_init(&sdp->sd_tune); | |
60 | ||
61 | for (x = 0; x < GFS2_GL_HASH_SIZE; x++) { | |
ecb1460d | 62 | rwlock_init(&sdp->sd_gl_hash[x].hb_lock); |
b3b94faa DT |
63 | INIT_LIST_HEAD(&sdp->sd_gl_hash[x].hb_list); |
64 | } | |
65 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); | |
66 | spin_lock_init(&sdp->sd_reclaim_lock); | |
67 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
b3b94faa | 68 | |
f55ab26a | 69 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 70 | spin_lock_init(&sdp->sd_statfs_spin); |
f55ab26a | 71 | mutex_init(&sdp->sd_statfs_mutex); |
b3b94faa DT |
72 | |
73 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 74 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
75 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
76 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
77 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
78 | ||
79 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
80 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 81 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 82 | |
b3b94faa DT |
83 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
84 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 85 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
86 | |
87 | spin_lock_init(&sdp->sd_log_lock); | |
b3b94faa DT |
88 | |
89 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); | |
90 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); | |
91 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
92 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
93 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
94 | ||
71b86f56 | 95 | mutex_init(&sdp->sd_log_reserve_mutex); |
b3b94faa DT |
96 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
97 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
98 | ||
484adff8 | 99 | init_rwsem(&sdp->sd_log_flush_lock); |
b3b94faa DT |
100 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
101 | ||
102 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
103 | ||
f55ab26a | 104 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
105 | |
106 | return sdp; | |
107 | } | |
108 | ||
419c93e0 | 109 | static void init_vfs(struct super_block *sb, unsigned noatime) |
b3b94faa | 110 | { |
419c93e0 | 111 | struct gfs2_sbd *sdp = sb->s_fs_info; |
b3b94faa DT |
112 | |
113 | sb->s_magic = GFS2_MAGIC; | |
114 | sb->s_op = &gfs2_super_ops; | |
115 | sb->s_export_op = &gfs2_export_ops; | |
116 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
117 | ||
118 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
419c93e0 | 119 | set_bit(noatime, &sdp->sd_flags); |
b3b94faa DT |
120 | |
121 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
122 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
b3b94faa DT |
123 | } |
124 | ||
125 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
126 | { | |
127 | struct gfs2_sb *sb = NULL; | |
128 | char *proto, *table; | |
129 | int error = 0; | |
130 | ||
131 | proto = sdp->sd_args.ar_lockproto; | |
132 | table = sdp->sd_args.ar_locktable; | |
133 | ||
134 | /* Try to autodetect */ | |
135 | ||
136 | if (!proto[0] || !table[0]) { | |
137 | struct buffer_head *bh; | |
138 | bh = sb_getblk(sdp->sd_vfs, | |
139 | GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
140 | lock_buffer(bh); | |
141 | clear_buffer_uptodate(bh); | |
142 | clear_buffer_dirty(bh); | |
143 | unlock_buffer(bh); | |
144 | ll_rw_block(READ, 1, &bh); | |
145 | wait_on_buffer(bh); | |
146 | ||
147 | if (!buffer_uptodate(bh)) { | |
148 | brelse(bh); | |
149 | return -EIO; | |
150 | } | |
151 | ||
152 | sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL); | |
153 | if (!sb) { | |
154 | brelse(bh); | |
155 | return -ENOMEM; | |
156 | } | |
157 | gfs2_sb_in(sb, bh->b_data); | |
158 | brelse(bh); | |
159 | ||
160 | error = gfs2_check_sb(sdp, sb, silent); | |
161 | if (error) | |
162 | goto out; | |
163 | ||
164 | if (!proto[0]) | |
165 | proto = sb->sb_lockproto; | |
166 | if (!table[0]) | |
167 | table = sb->sb_locktable; | |
168 | } | |
169 | ||
170 | if (!table[0]) | |
171 | table = sdp->sd_vfs->s_id; | |
172 | ||
173 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
174 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
175 | ||
a91ea69f | 176 | out: |
b3b94faa | 177 | kfree(sb); |
b3b94faa DT |
178 | return error; |
179 | } | |
180 | ||
181 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
182 | int undo) | |
183 | { | |
184 | struct task_struct *p; | |
185 | int error = 0; | |
186 | ||
187 | if (undo) | |
188 | goto fail_trans; | |
189 | ||
190 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); | |
191 | error = IS_ERR(p); | |
192 | if (error) { | |
193 | fs_err(sdp, "can't start scand thread: %d\n", error); | |
194 | return error; | |
195 | } | |
196 | sdp->sd_scand_process = p; | |
197 | ||
198 | for (sdp->sd_glockd_num = 0; | |
199 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
200 | sdp->sd_glockd_num++) { | |
201 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
202 | error = IS_ERR(p); | |
203 | if (error) { | |
204 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
205 | goto fail; | |
206 | } | |
207 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
208 | } | |
209 | ||
210 | error = gfs2_glock_nq_num(sdp, | |
211 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
212 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
213 | mount_gh); | |
214 | if (error) { | |
215 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
216 | goto fail; | |
217 | } | |
218 | ||
219 | error = gfs2_glock_nq_num(sdp, | |
220 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
221 | LM_ST_SHARED, | |
579b78a4 | 222 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
223 | &sdp->sd_live_gh); |
224 | if (error) { | |
225 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
226 | goto fail_mount; | |
227 | } | |
228 | ||
229 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
230 | CREATE, &sdp->sd_rename_gl); | |
231 | if (error) { | |
232 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
233 | goto fail_live; | |
234 | } | |
235 | ||
236 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
237 | CREATE, &sdp->sd_trans_gl); | |
238 | if (error) { | |
239 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
240 | goto fail_rename; | |
241 | } | |
242 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
243 | ||
244 | return 0; | |
245 | ||
feaa7bba | 246 | fail_trans: |
b3b94faa | 247 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 248 | fail_rename: |
b3b94faa | 249 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 250 | fail_live: |
b3b94faa | 251 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 252 | fail_mount: |
b3b94faa | 253 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 254 | fail: |
b3b94faa DT |
255 | while (sdp->sd_glockd_num--) |
256 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
257 | ||
258 | kthread_stop(sdp->sd_scand_process); | |
b3b94faa DT |
259 | return error; |
260 | } | |
261 | ||
feaa7bba SW |
262 | static struct inode *gfs2_lookup_root(struct super_block *sb, |
263 | struct gfs2_inum *inum) | |
f42faf4f | 264 | { |
feaa7bba | 265 | return gfs2_inode_lookup(sb, inum, DT_DIR); |
f42faf4f SW |
266 | } |
267 | ||
b3b94faa DT |
268 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
269 | { | |
270 | struct super_block *sb = sdp->sd_vfs; | |
271 | struct gfs2_holder sb_gh; | |
419c93e0 | 272 | struct gfs2_inum *inum; |
f42faf4f | 273 | struct inode *inode; |
b3b94faa DT |
274 | int error = 0; |
275 | ||
276 | if (undo) { | |
88721877 RC |
277 | if (sb->s_root) { |
278 | dput(sb->s_root); | |
279 | sb->s_root = NULL; | |
280 | } | |
b3b94faa DT |
281 | return 0; |
282 | } | |
283 | ||
feaa7bba | 284 | error = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
b3b94faa DT |
285 | LM_ST_SHARED, 0, &sb_gh); |
286 | if (error) { | |
287 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
288 | return error; | |
289 | } | |
290 | ||
291 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
292 | if (error) { | |
293 | fs_err(sdp, "can't read superblock: %d\n", error); | |
294 | goto out; | |
295 | } | |
296 | ||
297 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 298 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 299 | error = -EINVAL; |
b3b94faa DT |
300 | fs_err(sdp, "FS block size (%u) is too small for device " |
301 | "block size (%u)\n", | |
302 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
303 | goto out; | |
304 | } | |
305 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 306 | error = -EINVAL; |
b3b94faa DT |
307 | fs_err(sdp, "FS block size (%u) is too big for machine " |
308 | "page size (%u)\n", | |
309 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
310 | goto out; | |
311 | } | |
b3b94faa DT |
312 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
313 | ||
f42faf4f | 314 | /* Get the root inode */ |
419c93e0 SW |
315 | inum = &sdp->sd_sb.sb_root_dir; |
316 | if (sb->s_type == &gfs2meta_fs_type) | |
317 | inum = &sdp->sd_sb.sb_master_dir; | |
feaa7bba | 318 | inode = gfs2_lookup_root(sb, inum); |
c9fd4307 SW |
319 | if (IS_ERR(inode)) { |
320 | error = PTR_ERR(inode); | |
f42faf4f SW |
321 | fs_err(sdp, "can't read in root inode: %d\n", error); |
322 | goto out; | |
323 | } | |
b3b94faa | 324 | |
f42faf4f SW |
325 | sb->s_root = d_alloc_root(inode); |
326 | if (!sb->s_root) { | |
327 | fs_err(sdp, "can't get root dentry\n"); | |
328 | error = -ENOMEM; | |
c9fd4307 | 329 | iput(inode); |
f42faf4f | 330 | } |
5bb76af1 | 331 | sb->s_root->d_op = &gfs2_dops; |
f42faf4f | 332 | out: |
b3b94faa | 333 | gfs2_glock_dq_uninit(&sb_gh); |
b3b94faa DT |
334 | return error; |
335 | } | |
336 | ||
337 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
338 | { | |
339 | struct gfs2_holder ji_gh; | |
340 | struct task_struct *p; | |
5c676f6d | 341 | struct gfs2_inode *ip; |
b3b94faa DT |
342 | int jindex = 1; |
343 | int error = 0; | |
344 | ||
345 | if (undo) { | |
346 | jindex = 0; | |
347 | goto fail_recoverd; | |
348 | } | |
349 | ||
c752666c SW |
350 | sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex"); |
351 | if (IS_ERR(sdp->sd_jindex)) { | |
b3b94faa | 352 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 353 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 354 | } |
feaa7bba | 355 | ip = GFS2_I(sdp->sd_jindex); |
5c676f6d | 356 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
b3b94faa DT |
357 | |
358 | /* Load in the journal index special file */ | |
359 | ||
360 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
361 | if (error) { | |
362 | fs_err(sdp, "can't read journal index: %d\n", error); | |
363 | goto fail; | |
364 | } | |
365 | ||
366 | error = -EINVAL; | |
367 | if (!gfs2_jindex_size(sdp)) { | |
368 | fs_err(sdp, "no journals!\n"); | |
369 | goto fail_jindex; | |
370 | } | |
371 | ||
372 | if (sdp->sd_args.ar_spectator) { | |
373 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
374 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
375 | } else { | |
376 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
377 | fs_err(sdp, "can't mount journal #%u\n", | |
378 | sdp->sd_lockstruct.ls_jid); | |
379 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
380 | gfs2_jindex_size(sdp), | |
381 | gfs2_jindex_size(sdp) - 1); | |
382 | goto fail_jindex; | |
383 | } | |
384 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
385 | ||
feaa7bba | 386 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
387 | &gfs2_journal_glops, |
388 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
389 | &sdp->sd_journal_gh); | |
390 | if (error) { | |
391 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
392 | goto fail_jindex; | |
393 | } | |
394 | ||
feaa7bba SW |
395 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
396 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
b3b94faa DT |
397 | LM_FLAG_NOEXP | GL_EXACT, |
398 | &sdp->sd_jinode_gh); | |
399 | if (error) { | |
400 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
401 | error); | |
402 | goto fail_journal_gh; | |
403 | } | |
404 | ||
405 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
406 | if (error) { | |
407 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
408 | sdp->sd_jdesc->jd_jid, error); | |
409 | goto fail_jinode_gh; | |
410 | } | |
411 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
412 | } | |
413 | ||
414 | if (sdp->sd_lockstruct.ls_first) { | |
415 | unsigned int x; | |
416 | for (x = 0; x < sdp->sd_journals; x++) { | |
c63e31c2 | 417 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
418 | if (error) { |
419 | fs_err(sdp, "error recovering journal %u: %d\n", | |
420 | x, error); | |
421 | goto fail_jinode_gh; | |
422 | } | |
423 | } | |
424 | ||
425 | gfs2_lm_others_may_mount(sdp); | |
426 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 427 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
428 | if (error) { |
429 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
430 | goto fail_jinode_gh; | |
431 | } | |
432 | } | |
433 | ||
434 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
435 | gfs2_glock_dq_uninit(&ji_gh); | |
436 | jindex = 0; | |
437 | ||
b3b94faa DT |
438 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
439 | error = IS_ERR(p); | |
440 | if (error) { | |
441 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
442 | goto fail_jinode_gh; | |
443 | } | |
444 | sdp->sd_recoverd_process = p; | |
445 | ||
446 | return 0; | |
447 | ||
a91ea69f | 448 | fail_recoverd: |
b3b94faa | 449 | kthread_stop(sdp->sd_recoverd_process); |
a91ea69f | 450 | fail_jinode_gh: |
b3b94faa DT |
451 | if (!sdp->sd_args.ar_spectator) |
452 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 453 | fail_journal_gh: |
b3b94faa DT |
454 | if (!sdp->sd_args.ar_spectator) |
455 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 456 | fail_jindex: |
b3b94faa DT |
457 | gfs2_jindex_free(sdp); |
458 | if (jindex) | |
459 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 460 | fail: |
f42faf4f | 461 | iput(sdp->sd_jindex); |
b3b94faa DT |
462 | return error; |
463 | } | |
464 | ||
b3b94faa DT |
465 | |
466 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
467 | { | |
b3b94faa | 468 | int error = 0; |
5c676f6d | 469 | struct gfs2_inode *ip; |
c9fd4307 | 470 | struct inode *inode; |
b3b94faa DT |
471 | |
472 | if (undo) | |
f42faf4f SW |
473 | goto fail_qinode; |
474 | ||
feaa7bba | 475 | inode = gfs2_lookup_root(sdp->sd_vfs, &sdp->sd_sb.sb_master_dir); |
c9fd4307 SW |
476 | if (IS_ERR(inode)) { |
477 | error = PTR_ERR(inode); | |
f42faf4f SW |
478 | fs_err(sdp, "can't read in master directory: %d\n", error); |
479 | goto fail; | |
480 | } | |
c9fd4307 | 481 | sdp->sd_master_dir = inode; |
f42faf4f SW |
482 | |
483 | error = init_journal(sdp, undo); | |
484 | if (error) | |
485 | goto fail_master; | |
b3b94faa DT |
486 | |
487 | /* Read in the master inode number inode */ | |
c752666c SW |
488 | sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum"); |
489 | if (IS_ERR(sdp->sd_inum_inode)) { | |
490 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 491 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 492 | goto fail_journal; |
b3b94faa DT |
493 | } |
494 | ||
f42faf4f | 495 | |
b3b94faa | 496 | /* Read in the master statfs inode */ |
c752666c SW |
497 | sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs"); |
498 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
499 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 500 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 501 | goto fail_inum; |
b3b94faa DT |
502 | } |
503 | ||
504 | /* Read in the resource index inode */ | |
c752666c SW |
505 | sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex"); |
506 | if (IS_ERR(sdp->sd_rindex)) { | |
507 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
508 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
509 | goto fail_statfs; | |
510 | } | |
feaa7bba | 511 | ip = GFS2_I(sdp->sd_rindex); |
5c676f6d SW |
512 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
513 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
514 | |
515 | /* Read in the quota inode */ | |
c752666c SW |
516 | sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota"); |
517 | if (IS_ERR(sdp->sd_quota_inode)) { | |
518 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
519 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
520 | goto fail_rindex; | |
521 | } | |
b3b94faa DT |
522 | return 0; |
523 | ||
f42faf4f SW |
524 | fail_qinode: |
525 | iput(sdp->sd_quota_inode); | |
f42faf4f | 526 | fail_rindex: |
b3b94faa | 527 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 528 | iput(sdp->sd_rindex); |
f42faf4f SW |
529 | fail_statfs: |
530 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
531 | fail_inum: |
532 | iput(sdp->sd_inum_inode); | |
533 | fail_journal: | |
534 | init_journal(sdp, UNDO); | |
535 | fail_master: | |
536 | iput(sdp->sd_master_dir); | |
537 | fail: | |
b3b94faa DT |
538 | return error; |
539 | } | |
540 | ||
541 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
542 | { | |
f42faf4f | 543 | struct inode *pn = NULL; |
b3b94faa DT |
544 | char buf[30]; |
545 | int error = 0; | |
5c676f6d | 546 | struct gfs2_inode *ip; |
b3b94faa DT |
547 | |
548 | if (sdp->sd_args.ar_spectator) | |
549 | return 0; | |
550 | ||
551 | if (undo) | |
552 | goto fail_qc_gh; | |
553 | ||
c752666c SW |
554 | pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node"); |
555 | if (IS_ERR(pn)) { | |
556 | error = PTR_ERR(pn); | |
b3b94faa DT |
557 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
558 | return error; | |
559 | } | |
560 | ||
561 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
562 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
563 | if (IS_ERR(sdp->sd_ir_inode)) { | |
564 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
565 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
566 | goto fail; | |
567 | } | |
568 | ||
569 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
570 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
571 | if (IS_ERR(sdp->sd_sc_inode)) { | |
572 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
573 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
574 | goto fail_ir_i; | |
575 | } | |
576 | ||
b3b94faa | 577 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
578 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
579 | if (IS_ERR(sdp->sd_qc_inode)) { | |
580 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
581 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
582 | goto fail_ut_i; | |
583 | } | |
584 | ||
f42faf4f | 585 | iput(pn); |
b3b94faa DT |
586 | pn = NULL; |
587 | ||
feaa7bba | 588 | ip = GFS2_I(sdp->sd_ir_inode); |
5c676f6d | 589 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 590 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
591 | &sdp->sd_ir_gh); |
592 | if (error) { | |
593 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
594 | goto fail_qc_i; | |
595 | } | |
596 | ||
feaa7bba | 597 | ip = GFS2_I(sdp->sd_sc_inode); |
5c676f6d | 598 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 599 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
600 | &sdp->sd_sc_gh); |
601 | if (error) { | |
602 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
603 | goto fail_ir_gh; | |
604 | } | |
605 | ||
feaa7bba | 606 | ip = GFS2_I(sdp->sd_qc_inode); |
5c676f6d | 607 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 608 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
609 | &sdp->sd_qc_gh); |
610 | if (error) { | |
611 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
612 | goto fail_ut_gh; | |
613 | } | |
614 | ||
615 | return 0; | |
616 | ||
a91ea69f | 617 | fail_qc_gh: |
b3b94faa | 618 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 619 | fail_ut_gh: |
b3b94faa | 620 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 621 | fail_ir_gh: |
b3b94faa | 622 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); |
a91ea69f | 623 | fail_qc_i: |
f42faf4f | 624 | iput(sdp->sd_qc_inode); |
a91ea69f | 625 | fail_ut_i: |
f42faf4f | 626 | iput(sdp->sd_sc_inode); |
a91ea69f | 627 | fail_ir_i: |
f42faf4f | 628 | iput(sdp->sd_ir_inode); |
a91ea69f | 629 | fail: |
b3b94faa | 630 | if (pn) |
f42faf4f | 631 | iput(pn); |
b3b94faa DT |
632 | return error; |
633 | } | |
634 | ||
635 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
636 | { | |
637 | struct task_struct *p; | |
638 | int error = 0; | |
639 | ||
640 | if (undo) | |
feaa7bba | 641 | goto fail_quotad; |
b3b94faa DT |
642 | |
643 | sdp->sd_log_flush_time = jiffies; | |
644 | sdp->sd_jindex_refresh_time = jiffies; | |
645 | ||
646 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
647 | error = IS_ERR(p); | |
648 | if (error) { | |
649 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
650 | return error; | |
651 | } | |
652 | sdp->sd_logd_process = p; | |
653 | ||
654 | sdp->sd_statfs_sync_time = jiffies; | |
655 | sdp->sd_quota_sync_time = jiffies; | |
656 | ||
657 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
658 | error = IS_ERR(p); | |
659 | if (error) { | |
660 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
661 | goto fail; | |
662 | } | |
663 | sdp->sd_quotad_process = p; | |
664 | ||
b3b94faa DT |
665 | return 0; |
666 | ||
b3b94faa | 667 | |
feaa7bba | 668 | fail_quotad: |
b3b94faa | 669 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 670 | fail: |
b3b94faa | 671 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
672 | return error; |
673 | } | |
674 | ||
675 | /** | |
676 | * fill_super - Read in superblock | |
677 | * @sb: The VFS superblock | |
678 | * @data: Mount options | |
679 | * @silent: Don't complain if it's not a GFS2 filesystem | |
680 | * | |
681 | * Returns: errno | |
682 | */ | |
683 | ||
684 | static int fill_super(struct super_block *sb, void *data, int silent) | |
685 | { | |
686 | struct gfs2_sbd *sdp; | |
687 | struct gfs2_holder mount_gh; | |
688 | int error; | |
689 | ||
690 | sdp = init_sbd(sb); | |
691 | if (!sdp) { | |
d92a8d48 | 692 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
693 | return -ENOMEM; |
694 | } | |
695 | ||
696 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
697 | if (error) { | |
d92a8d48 | 698 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
699 | goto fail; |
700 | } | |
701 | ||
419c93e0 SW |
702 | init_vfs(sb, SDF_NOATIME); |
703 | ||
704 | /* Set up the buffer cache and fill in some fake block size values | |
705 | to allow us to read-in the on-disk superblock. */ | |
706 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
707 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
708 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
709 | GFS2_BASIC_BLOCK_SHIFT; | |
710 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
711 | |
712 | error = init_names(sdp, silent); | |
713 | if (error) | |
714 | goto fail; | |
715 | ||
716 | error = gfs2_sys_fs_add(sdp); | |
717 | if (error) | |
718 | goto fail; | |
719 | ||
720 | error = gfs2_lm_mount(sdp, silent); | |
721 | if (error) | |
722 | goto fail_sys; | |
723 | ||
724 | error = init_locking(sdp, &mount_gh, DO); | |
725 | if (error) | |
726 | goto fail_lm; | |
727 | ||
728 | error = init_sb(sdp, silent, DO); | |
729 | if (error) | |
730 | goto fail_locking; | |
b3b94faa DT |
731 | |
732 | error = init_inodes(sdp, DO); | |
733 | if (error) | |
f42faf4f | 734 | goto fail_sb; |
b3b94faa DT |
735 | |
736 | error = init_per_node(sdp, DO); | |
737 | if (error) | |
738 | goto fail_inodes; | |
739 | ||
740 | error = gfs2_statfs_init(sdp); | |
741 | if (error) { | |
742 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
743 | goto fail_per_node; | |
744 | } | |
745 | ||
746 | error = init_threads(sdp, DO); | |
747 | if (error) | |
748 | goto fail_per_node; | |
749 | ||
750 | if (!(sb->s_flags & MS_RDONLY)) { | |
751 | error = gfs2_make_fs_rw(sdp); | |
752 | if (error) { | |
753 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
754 | goto fail_threads; | |
755 | } | |
756 | } | |
757 | ||
758 | gfs2_glock_dq_uninit(&mount_gh); | |
759 | ||
760 | return 0; | |
761 | ||
a91ea69f | 762 | fail_threads: |
b3b94faa | 763 | init_threads(sdp, UNDO); |
a91ea69f | 764 | fail_per_node: |
b3b94faa | 765 | init_per_node(sdp, UNDO); |
a91ea69f | 766 | fail_inodes: |
b3b94faa | 767 | init_inodes(sdp, UNDO); |
a91ea69f | 768 | fail_sb: |
b3b94faa | 769 | init_sb(sdp, 0, UNDO); |
a91ea69f | 770 | fail_locking: |
b3b94faa | 771 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 772 | fail_lm: |
b3b94faa DT |
773 | gfs2_gl_hash_clear(sdp, WAIT); |
774 | gfs2_lm_unmount(sdp); | |
775 | while (invalidate_inodes(sb)) | |
776 | yield(); | |
a91ea69f | 777 | fail_sys: |
b3b94faa | 778 | gfs2_sys_fs_del(sdp); |
a91ea69f | 779 | fail: |
b3b94faa | 780 | vfree(sdp); |
5c676f6d | 781 | sb->s_fs_info = NULL; |
b3b94faa DT |
782 | return error; |
783 | } | |
784 | ||
ccd6efd0 AM |
785 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
786 | const char *dev_name, void *data, struct vfsmount *mnt) | |
b3b94faa | 787 | { |
86384605 AD |
788 | struct super_block *sb; |
789 | struct gfs2_sbd *sdp; | |
790 | int error = get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt); | |
791 | if (error) | |
792 | goto out; | |
793 | sb = mnt->mnt_sb; | |
26c1a574 | 794 | sdp = sb->s_fs_info; |
86384605 AD |
795 | sdp->sd_gfs2mnt = mnt; |
796 | out: | |
797 | return error; | |
798 | } | |
799 | ||
800 | static int fill_super_meta(struct super_block *sb, struct super_block *new, | |
801 | void *data, int silent) | |
802 | { | |
803 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
804 | struct inode *inode; | |
805 | int error = 0; | |
806 | ||
807 | new->s_fs_info = sdp; | |
808 | sdp->sd_vfs_meta = sb; | |
809 | ||
810 | init_vfs(new, SDF_NOATIME); | |
811 | ||
812 | /* Get the master inode */ | |
813 | inode = igrab(sdp->sd_master_dir); | |
814 | ||
815 | new->s_root = d_alloc_root(inode); | |
816 | if (!new->s_root) { | |
817 | fs_err(sdp, "can't get root dentry\n"); | |
818 | error = -ENOMEM; | |
819 | iput(inode); | |
820 | } | |
821 | new->s_root->d_op = &gfs2_dops; | |
822 | ||
823 | return error; | |
824 | } | |
a91ea69f | 825 | |
86384605 AD |
826 | static int set_bdev_super(struct super_block *s, void *data) |
827 | { | |
828 | s->s_bdev = data; | |
829 | s->s_dev = s->s_bdev->bd_dev; | |
830 | return 0; | |
831 | } | |
832 | ||
833 | static int test_bdev_super(struct super_block *s, void *data) | |
834 | { | |
26c1a574 | 835 | return s->s_bdev == data; |
86384605 AD |
836 | } |
837 | ||
838 | static struct super_block* get_gfs2_sb(const char *dev_name) | |
839 | { | |
840 | struct kstat stat; | |
841 | struct nameidata nd; | |
842 | struct file_system_type *fstype; | |
843 | struct super_block *sb = NULL, *s; | |
844 | struct list_head *l; | |
845 | int error; | |
846 | ||
847 | error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd); | |
848 | if (error) { | |
849 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error\n", | |
850 | dev_name); | |
851 | goto out; | |
852 | } | |
853 | error = vfs_getattr(nd.mnt, nd.dentry, &stat); | |
854 | ||
855 | fstype = get_fs_type("gfs2"); | |
856 | list_for_each(l, &fstype->fs_supers) { | |
857 | s = list_entry(l, struct super_block, s_instances); | |
858 | if ((S_ISBLK(stat.mode) && s->s_dev == stat.rdev) || | |
859 | (S_ISDIR(stat.mode) && s == nd.dentry->d_inode->i_sb)) { | |
860 | sb = s; | |
861 | goto free_nd; | |
862 | } | |
863 | } | |
864 | ||
865 | printk(KERN_WARNING "GFS2: Unrecognized block device or " | |
866 | "mount point %s", dev_name); | |
867 | ||
868 | free_nd: | |
869 | path_release(&nd); | |
870 | out: | |
871 | return sb; | |
872 | } | |
873 | ||
874 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, | |
875 | const char *dev_name, void *data, struct vfsmount *mnt) | |
876 | { | |
877 | int error = 0; | |
878 | struct super_block *sb = NULL, *new; | |
879 | struct gfs2_sbd *sdp; | |
880 | char *gfs2mnt = NULL; | |
881 | ||
882 | sb = get_gfs2_sb(dev_name); | |
883 | if (!sb) { | |
884 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); | |
885 | error = -ENOENT; | |
886 | goto error; | |
887 | } | |
888 | sdp = (struct gfs2_sbd*) sb->s_fs_info; | |
889 | if (sdp->sd_vfs_meta) { | |
890 | printk(KERN_WARNING "GFS2: gfs2meta mount already exists\n"); | |
891 | error = -EBUSY; | |
892 | goto error; | |
893 | } | |
894 | mutex_lock(&sb->s_bdev->bd_mount_mutex); | |
895 | new = sget(fs_type, test_bdev_super, set_bdev_super, sb->s_bdev); | |
896 | mutex_unlock(&sb->s_bdev->bd_mount_mutex); | |
897 | if (IS_ERR(new)) { | |
898 | error = PTR_ERR(new); | |
899 | goto error; | |
900 | } | |
901 | module_put(fs_type->owner); | |
902 | new->s_flags = flags; | |
903 | strlcpy(new->s_id, sb->s_id, sizeof(new->s_id)); | |
904 | sb_set_blocksize(new, sb->s_blocksize); | |
905 | error = fill_super_meta(sb, new, data, flags & MS_SILENT ? 1 : 0); | |
906 | if (error) { | |
907 | up_write(&new->s_umount); | |
908 | deactivate_super(new); | |
909 | goto error; | |
910 | } | |
911 | ||
912 | new->s_flags |= MS_ACTIVE; | |
913 | ||
914 | /* Grab a reference to the gfs2 mount point */ | |
915 | atomic_inc(&sdp->sd_gfs2mnt->mnt_count); | |
916 | return simple_set_mnt(mnt, new); | |
917 | error: | |
918 | if (gfs2mnt) | |
919 | kfree(gfs2mnt); | |
920 | return error; | |
b3b94faa DT |
921 | } |
922 | ||
419c93e0 SW |
923 | static void gfs2_kill_sb(struct super_block *sb) |
924 | { | |
925 | kill_block_super(sb); | |
926 | } | |
927 | ||
86384605 AD |
928 | static void gfs2_kill_sb_meta(struct super_block *sb) |
929 | { | |
930 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
931 | generic_shutdown_super(sb); | |
932 | sdp->sd_vfs_meta = NULL; | |
933 | atomic_dec(&sdp->sd_gfs2mnt->mnt_count); | |
934 | } | |
935 | ||
b3b94faa DT |
936 | struct file_system_type gfs2_fs_type = { |
937 | .name = "gfs2", | |
938 | .fs_flags = FS_REQUIRES_DEV, | |
939 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
940 | .kill_sb = gfs2_kill_sb, |
941 | .owner = THIS_MODULE, | |
942 | }; | |
943 | ||
944 | struct file_system_type gfs2meta_fs_type = { | |
945 | .name = "gfs2meta", | |
946 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 AD |
947 | .get_sb = gfs2_get_sb_meta, |
948 | .kill_sb = gfs2_kill_sb_meta, | |
b3b94faa DT |
949 | .owner = THIS_MODULE, |
950 | }; | |
951 |