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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3 | * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. | |
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 | |
7 | * of the GNU General Public License v.2. | |
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> | |
18 | #include <asm/semaphore.h> | |
19 | ||
20 | #include "gfs2.h" | |
21 | #include "daemon.h" | |
22 | #include "glock.h" | |
23 | #include "glops.h" | |
24 | #include "inode.h" | |
25 | #include "lm.h" | |
26 | #include "mount.h" | |
27 | #include "ops_export.h" | |
28 | #include "ops_fstype.h" | |
29 | #include "ops_super.h" | |
30 | #include "recovery.h" | |
31 | #include "rgrp.h" | |
32 | #include "super.h" | |
33 | #include "unlinked.h" | |
34 | #include "sys.h" | |
35 | ||
36 | #define DO 0 | |
37 | #define UNDO 1 | |
38 | ||
39 | static struct gfs2_sbd *init_sbd(struct super_block *sb) | |
40 | { | |
41 | struct gfs2_sbd *sdp; | |
42 | unsigned int x; | |
43 | ||
44 | sdp = vmalloc(sizeof(struct gfs2_sbd)); | |
45 | if (!sdp) | |
46 | return NULL; | |
47 | ||
48 | memset(sdp, 0, sizeof(struct gfs2_sbd)); | |
49 | ||
50 | set_v2sdp(sb, sdp); | |
51 | sdp->sd_vfs = sb; | |
52 | ||
53 | gfs2_tune_init(&sdp->sd_tune); | |
54 | ||
55 | for (x = 0; x < GFS2_GL_HASH_SIZE; x++) { | |
56 | sdp->sd_gl_hash[x].hb_lock = RW_LOCK_UNLOCKED; | |
57 | INIT_LIST_HEAD(&sdp->sd_gl_hash[x].hb_list); | |
58 | } | |
59 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); | |
60 | spin_lock_init(&sdp->sd_reclaim_lock); | |
61 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
f55ab26a | 62 | mutex_init(&sdp->sd_invalidate_inodes_mutex); |
b3b94faa | 63 | |
f55ab26a | 64 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 65 | spin_lock_init(&sdp->sd_statfs_spin); |
f55ab26a | 66 | mutex_init(&sdp->sd_statfs_mutex); |
b3b94faa DT |
67 | |
68 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 69 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
70 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
71 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
72 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
73 | ||
74 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
75 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 76 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa DT |
77 | |
78 | INIT_LIST_HEAD(&sdp->sd_unlinked_list); | |
79 | spin_lock_init(&sdp->sd_unlinked_spin); | |
f55ab26a | 80 | mutex_init(&sdp->sd_unlinked_mutex); |
b3b94faa DT |
81 | |
82 | INIT_LIST_HEAD(&sdp->sd_quota_list); | |
83 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 84 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
85 | |
86 | spin_lock_init(&sdp->sd_log_lock); | |
87 | init_waitqueue_head(&sdp->sd_log_trans_wq); | |
88 | init_waitqueue_head(&sdp->sd_log_flush_wq); | |
89 | ||
90 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); | |
91 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); | |
92 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
93 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
94 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
95 | ||
96 | INIT_LIST_HEAD(&sdp->sd_log_blks_list); | |
97 | init_waitqueue_head(&sdp->sd_log_blks_wait); | |
98 | ||
99 | INIT_LIST_HEAD(&sdp->sd_ail1_list); | |
100 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
101 | ||
f55ab26a | 102 | mutex_init(&sdp->sd_log_flush_lock); |
b3b94faa DT |
103 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
104 | ||
105 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
106 | ||
f55ab26a | 107 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
108 | |
109 | return sdp; | |
110 | } | |
111 | ||
112 | static void init_vfs(struct gfs2_sbd *sdp) | |
113 | { | |
114 | struct super_block *sb = sdp->sd_vfs; | |
115 | ||
116 | sb->s_magic = GFS2_MAGIC; | |
117 | sb->s_op = &gfs2_super_ops; | |
118 | sb->s_export_op = &gfs2_export_ops; | |
119 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
120 | ||
121 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
122 | set_bit(SDF_NOATIME, &sdp->sd_flags); | |
123 | ||
124 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
125 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
126 | ||
127 | /* Set up the buffer cache and fill in some fake block size values | |
128 | to allow us to read-in the on-disk superblock. */ | |
129 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
130 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
131 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT; | |
132 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
133 | } | |
134 | ||
135 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
136 | { | |
137 | struct gfs2_sb *sb = NULL; | |
138 | char *proto, *table; | |
139 | int error = 0; | |
140 | ||
141 | proto = sdp->sd_args.ar_lockproto; | |
142 | table = sdp->sd_args.ar_locktable; | |
143 | ||
144 | /* Try to autodetect */ | |
145 | ||
146 | if (!proto[0] || !table[0]) { | |
147 | struct buffer_head *bh; | |
148 | bh = sb_getblk(sdp->sd_vfs, | |
149 | GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
150 | lock_buffer(bh); | |
151 | clear_buffer_uptodate(bh); | |
152 | clear_buffer_dirty(bh); | |
153 | unlock_buffer(bh); | |
154 | ll_rw_block(READ, 1, &bh); | |
155 | wait_on_buffer(bh); | |
156 | ||
157 | if (!buffer_uptodate(bh)) { | |
158 | brelse(bh); | |
159 | return -EIO; | |
160 | } | |
161 | ||
162 | sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL); | |
163 | if (!sb) { | |
164 | brelse(bh); | |
165 | return -ENOMEM; | |
166 | } | |
167 | gfs2_sb_in(sb, bh->b_data); | |
168 | brelse(bh); | |
169 | ||
170 | error = gfs2_check_sb(sdp, sb, silent); | |
171 | if (error) | |
172 | goto out; | |
173 | ||
174 | if (!proto[0]) | |
175 | proto = sb->sb_lockproto; | |
176 | if (!table[0]) | |
177 | table = sb->sb_locktable; | |
178 | } | |
179 | ||
180 | if (!table[0]) | |
181 | table = sdp->sd_vfs->s_id; | |
182 | ||
183 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
184 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
185 | ||
186 | out: | |
187 | kfree(sb); | |
188 | ||
189 | return error; | |
190 | } | |
191 | ||
192 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
193 | int undo) | |
194 | { | |
195 | struct task_struct *p; | |
196 | int error = 0; | |
197 | ||
198 | if (undo) | |
199 | goto fail_trans; | |
200 | ||
201 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); | |
202 | error = IS_ERR(p); | |
203 | if (error) { | |
204 | fs_err(sdp, "can't start scand thread: %d\n", error); | |
205 | return error; | |
206 | } | |
207 | sdp->sd_scand_process = p; | |
208 | ||
209 | for (sdp->sd_glockd_num = 0; | |
210 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
211 | sdp->sd_glockd_num++) { | |
212 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
213 | error = IS_ERR(p); | |
214 | if (error) { | |
215 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
216 | goto fail; | |
217 | } | |
218 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
219 | } | |
220 | ||
221 | error = gfs2_glock_nq_num(sdp, | |
222 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
223 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
224 | mount_gh); | |
225 | if (error) { | |
226 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
227 | goto fail; | |
228 | } | |
229 | ||
230 | error = gfs2_glock_nq_num(sdp, | |
231 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
232 | LM_ST_SHARED, | |
233 | LM_FLAG_NOEXP | GL_EXACT | GL_NEVER_RECURSE, | |
234 | &sdp->sd_live_gh); | |
235 | if (error) { | |
236 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
237 | goto fail_mount; | |
238 | } | |
239 | ||
240 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
241 | CREATE, &sdp->sd_rename_gl); | |
242 | if (error) { | |
243 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
244 | goto fail_live; | |
245 | } | |
246 | ||
247 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
248 | CREATE, &sdp->sd_trans_gl); | |
249 | if (error) { | |
250 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
251 | goto fail_rename; | |
252 | } | |
253 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
254 | ||
255 | return 0; | |
256 | ||
257 | fail_trans: | |
258 | gfs2_glock_put(sdp->sd_trans_gl); | |
259 | ||
260 | fail_rename: | |
261 | gfs2_glock_put(sdp->sd_rename_gl); | |
262 | ||
263 | fail_live: | |
264 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
265 | ||
266 | fail_mount: | |
267 | gfs2_glock_dq_uninit(mount_gh); | |
268 | ||
269 | fail: | |
270 | while (sdp->sd_glockd_num--) | |
271 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
272 | ||
273 | kthread_stop(sdp->sd_scand_process); | |
274 | ||
275 | return error; | |
276 | } | |
277 | ||
f42faf4f SW |
278 | int gfs2_lookup_root(struct gfs2_sbd *sdp) |
279 | { | |
280 | int error; | |
281 | struct gfs2_glock *gl; | |
282 | struct gfs2_inode *ip; | |
283 | ||
284 | error = gfs2_glock_get(sdp, sdp->sd_sb.sb_root_dir.no_addr, | |
285 | &gfs2_inode_glops, CREATE, &gl); | |
286 | if (!error) { | |
287 | error = gfs2_inode_get(gl, &sdp->sd_sb.sb_root_dir, | |
288 | CREATE, &ip); | |
289 | if (!error) { | |
290 | if (!error) | |
291 | gfs2_inode_min_init(ip, DT_DIR); | |
292 | sdp->sd_root_dir = gfs2_ip2v(ip); | |
293 | gfs2_inode_put(ip); | |
294 | } | |
295 | gfs2_glock_put(gl); | |
296 | } | |
297 | ||
298 | return error; | |
299 | } | |
300 | ||
b3b94faa DT |
301 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
302 | { | |
303 | struct super_block *sb = sdp->sd_vfs; | |
304 | struct gfs2_holder sb_gh; | |
f42faf4f | 305 | struct inode *inode; |
b3b94faa DT |
306 | int error = 0; |
307 | ||
308 | if (undo) { | |
f42faf4f | 309 | iput(sdp->sd_master_dir); |
b3b94faa DT |
310 | return 0; |
311 | } | |
312 | ||
313 | error = gfs2_glock_nq_num(sdp, | |
314 | GFS2_SB_LOCK, &gfs2_meta_glops, | |
315 | LM_ST_SHARED, 0, &sb_gh); | |
316 | if (error) { | |
317 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
318 | return error; | |
319 | } | |
320 | ||
321 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
322 | if (error) { | |
323 | fs_err(sdp, "can't read superblock: %d\n", error); | |
324 | goto out; | |
325 | } | |
326 | ||
327 | /* Set up the buffer cache and SB for real */ | |
328 | error = -EINVAL; | |
329 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { | |
330 | fs_err(sdp, "FS block size (%u) is too small for device " | |
331 | "block size (%u)\n", | |
332 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
333 | goto out; | |
334 | } | |
335 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
336 | fs_err(sdp, "FS block size (%u) is too big for machine " | |
337 | "page size (%u)\n", | |
338 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
339 | goto out; | |
340 | } | |
341 | ||
342 | /* Get rid of buffers from the original block size */ | |
343 | sb_gh.gh_gl->gl_ops->go_inval(sb_gh.gh_gl, DIO_METADATA | DIO_DATA); | |
344 | sb_gh.gh_gl->gl_aspace->i_blkbits = sdp->sd_sb.sb_bsize_shift; | |
345 | ||
346 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); | |
347 | ||
f42faf4f SW |
348 | /* Get the root inode */ |
349 | error = gfs2_lookup_root(sdp); | |
350 | if (error) { | |
351 | fs_err(sdp, "can't read in root inode: %d\n", error); | |
352 | goto out; | |
353 | } | |
b3b94faa | 354 | |
f42faf4f SW |
355 | /* Get the root inode/dentry */ |
356 | inode = sdp->sd_root_dir; | |
357 | if (!inode) { | |
358 | fs_err(sdp, "can't get root inode\n"); | |
359 | error = -ENOMEM; | |
360 | goto out_rooti; | |
361 | } | |
362 | ||
7359a19c | 363 | igrab(inode); |
f42faf4f SW |
364 | sb->s_root = d_alloc_root(inode); |
365 | if (!sb->s_root) { | |
366 | fs_err(sdp, "can't get root dentry\n"); | |
367 | error = -ENOMEM; | |
368 | goto out_rooti; | |
369 | } | |
370 | ||
371 | out: | |
b3b94faa DT |
372 | gfs2_glock_dq_uninit(&sb_gh); |
373 | ||
374 | return error; | |
f42faf4f SW |
375 | out_rooti: |
376 | iput(sdp->sd_root_dir); | |
377 | goto out; | |
b3b94faa DT |
378 | } |
379 | ||
380 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
381 | { | |
382 | struct gfs2_holder ji_gh; | |
383 | struct task_struct *p; | |
384 | int jindex = 1; | |
385 | int error = 0; | |
386 | ||
387 | if (undo) { | |
388 | jindex = 0; | |
389 | goto fail_recoverd; | |
390 | } | |
391 | ||
392 | error = gfs2_lookup_simple(sdp->sd_master_dir, "jindex", | |
393 | &sdp->sd_jindex); | |
394 | if (error) { | |
395 | fs_err(sdp, "can't lookup journal index: %d\n", error); | |
396 | return error; | |
397 | } | |
f42faf4f | 398 | set_bit(GLF_STICKY, &get_v2ip(sdp->sd_jindex)->i_gl->gl_flags); |
b3b94faa DT |
399 | |
400 | /* Load in the journal index special file */ | |
401 | ||
402 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
403 | if (error) { | |
404 | fs_err(sdp, "can't read journal index: %d\n", error); | |
405 | goto fail; | |
406 | } | |
407 | ||
408 | error = -EINVAL; | |
409 | if (!gfs2_jindex_size(sdp)) { | |
410 | fs_err(sdp, "no journals!\n"); | |
411 | goto fail_jindex; | |
412 | } | |
413 | ||
414 | if (sdp->sd_args.ar_spectator) { | |
415 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
416 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
417 | } else { | |
418 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
419 | fs_err(sdp, "can't mount journal #%u\n", | |
420 | sdp->sd_lockstruct.ls_jid); | |
421 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
422 | gfs2_jindex_size(sdp), | |
423 | gfs2_jindex_size(sdp) - 1); | |
424 | goto fail_jindex; | |
425 | } | |
426 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
427 | ||
428 | error = gfs2_glock_nq_num(sdp, | |
429 | sdp->sd_lockstruct.ls_jid, | |
430 | &gfs2_journal_glops, | |
431 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
432 | &sdp->sd_journal_gh); | |
433 | if (error) { | |
434 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
435 | goto fail_jindex; | |
436 | } | |
437 | ||
7359a19c | 438 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_jdesc->jd_inode)->i_gl, |
b3b94faa DT |
439 | LM_ST_SHARED, |
440 | LM_FLAG_NOEXP | GL_EXACT, | |
441 | &sdp->sd_jinode_gh); | |
442 | if (error) { | |
443 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
444 | error); | |
445 | goto fail_journal_gh; | |
446 | } | |
447 | ||
448 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
449 | if (error) { | |
450 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
451 | sdp->sd_jdesc->jd_jid, error); | |
452 | goto fail_jinode_gh; | |
453 | } | |
454 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
455 | } | |
456 | ||
457 | if (sdp->sd_lockstruct.ls_first) { | |
458 | unsigned int x; | |
459 | for (x = 0; x < sdp->sd_journals; x++) { | |
460 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), | |
461 | WAIT); | |
462 | if (error) { | |
463 | fs_err(sdp, "error recovering journal %u: %d\n", | |
464 | x, error); | |
465 | goto fail_jinode_gh; | |
466 | } | |
467 | } | |
468 | ||
469 | gfs2_lm_others_may_mount(sdp); | |
470 | } else if (!sdp->sd_args.ar_spectator) { | |
471 | error = gfs2_recover_journal(sdp->sd_jdesc, WAIT); | |
472 | if (error) { | |
473 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
474 | goto fail_jinode_gh; | |
475 | } | |
476 | } | |
477 | ||
478 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
479 | gfs2_glock_dq_uninit(&ji_gh); | |
480 | jindex = 0; | |
481 | ||
482 | /* Disown my Journal glock */ | |
483 | ||
484 | sdp->sd_journal_gh.gh_owner = NULL; | |
485 | sdp->sd_jinode_gh.gh_owner = NULL; | |
486 | ||
487 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); | |
488 | error = IS_ERR(p); | |
489 | if (error) { | |
490 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
491 | goto fail_jinode_gh; | |
492 | } | |
493 | sdp->sd_recoverd_process = p; | |
494 | ||
495 | return 0; | |
496 | ||
497 | fail_recoverd: | |
498 | kthread_stop(sdp->sd_recoverd_process); | |
499 | ||
500 | fail_jinode_gh: | |
501 | if (!sdp->sd_args.ar_spectator) | |
502 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
503 | ||
504 | fail_journal_gh: | |
505 | if (!sdp->sd_args.ar_spectator) | |
506 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
507 | ||
508 | fail_jindex: | |
509 | gfs2_jindex_free(sdp); | |
510 | if (jindex) | |
511 | gfs2_glock_dq_uninit(&ji_gh); | |
512 | ||
513 | fail: | |
f42faf4f | 514 | iput(sdp->sd_jindex); |
b3b94faa DT |
515 | |
516 | return error; | |
517 | } | |
518 | ||
b3b94faa DT |
519 | |
520 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
521 | { | |
b3b94faa DT |
522 | int error = 0; |
523 | ||
524 | if (undo) | |
f42faf4f SW |
525 | goto fail_qinode; |
526 | ||
527 | error = gfs2_lookup_master_dir(sdp); | |
528 | if (error) { | |
529 | fs_err(sdp, "can't read in master directory: %d\n", error); | |
530 | goto fail; | |
531 | } | |
532 | ||
533 | error = init_journal(sdp, undo); | |
534 | if (error) | |
535 | goto fail_master; | |
b3b94faa DT |
536 | |
537 | /* Read in the master inode number inode */ | |
538 | error = gfs2_lookup_simple(sdp->sd_master_dir, "inum", | |
539 | &sdp->sd_inum_inode); | |
540 | if (error) { | |
541 | fs_err(sdp, "can't read in inum inode: %d\n", error); | |
f42faf4f | 542 | goto fail_journal; |
b3b94faa DT |
543 | } |
544 | ||
f42faf4f | 545 | |
b3b94faa DT |
546 | /* Read in the master statfs inode */ |
547 | error = gfs2_lookup_simple(sdp->sd_master_dir, "statfs", | |
548 | &sdp->sd_statfs_inode); | |
549 | if (error) { | |
550 | fs_err(sdp, "can't read in statfs inode: %d\n", error); | |
f42faf4f | 551 | goto fail_inum; |
b3b94faa DT |
552 | } |
553 | ||
554 | /* Read in the resource index inode */ | |
555 | error = gfs2_lookup_simple(sdp->sd_master_dir, "rindex", | |
556 | &sdp->sd_rindex); | |
557 | if (error) { | |
558 | fs_err(sdp, "can't get resource index inode: %d\n", error); | |
559 | goto fail_statfs; | |
560 | } | |
f42faf4f SW |
561 | set_bit(GLF_STICKY, &get_v2ip(sdp->sd_rindex)->i_gl->gl_flags); |
562 | sdp->sd_rindex_vn = get_v2ip(sdp->sd_rindex)->i_gl->gl_vn - 1; | |
b3b94faa DT |
563 | |
564 | /* Read in the quota inode */ | |
565 | error = gfs2_lookup_simple(sdp->sd_master_dir, "quota", | |
566 | &sdp->sd_quota_inode); | |
567 | if (error) { | |
568 | fs_err(sdp, "can't get quota file inode: %d\n", error); | |
569 | goto fail_rindex; | |
570 | } | |
b3b94faa DT |
571 | return 0; |
572 | ||
f42faf4f SW |
573 | fail_qinode: |
574 | iput(sdp->sd_quota_inode); | |
b3b94faa | 575 | |
f42faf4f | 576 | fail_rindex: |
b3b94faa | 577 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 578 | iput(sdp->sd_rindex); |
b3b94faa | 579 | |
f42faf4f SW |
580 | fail_statfs: |
581 | iput(sdp->sd_statfs_inode); | |
b3b94faa | 582 | |
f42faf4f SW |
583 | fail_inum: |
584 | iput(sdp->sd_inum_inode); | |
585 | fail_journal: | |
586 | init_journal(sdp, UNDO); | |
587 | fail_master: | |
588 | iput(sdp->sd_master_dir); | |
589 | fail: | |
b3b94faa DT |
590 | return error; |
591 | } | |
592 | ||
593 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
594 | { | |
f42faf4f | 595 | struct inode *pn = NULL; |
b3b94faa DT |
596 | char buf[30]; |
597 | int error = 0; | |
598 | ||
599 | if (sdp->sd_args.ar_spectator) | |
600 | return 0; | |
601 | ||
602 | if (undo) | |
603 | goto fail_qc_gh; | |
604 | ||
605 | error = gfs2_lookup_simple(sdp->sd_master_dir, "per_node", &pn); | |
606 | if (error) { | |
607 | fs_err(sdp, "can't find per_node directory: %d\n", error); | |
608 | return error; | |
609 | } | |
610 | ||
611 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
612 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_ir_inode); | |
613 | if (error) { | |
614 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); | |
615 | goto fail; | |
616 | } | |
617 | ||
618 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
619 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_sc_inode); | |
620 | if (error) { | |
621 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); | |
622 | goto fail_ir_i; | |
623 | } | |
624 | ||
625 | sprintf(buf, "unlinked_tag%u", sdp->sd_jdesc->jd_jid); | |
626 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_ut_inode); | |
627 | if (error) { | |
628 | fs_err(sdp, "can't find local \"ut\" file: %d\n", error); | |
629 | goto fail_sc_i; | |
630 | } | |
631 | ||
632 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); | |
633 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_qc_inode); | |
634 | if (error) { | |
635 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); | |
636 | goto fail_ut_i; | |
637 | } | |
638 | ||
f42faf4f | 639 | iput(pn); |
b3b94faa DT |
640 | pn = NULL; |
641 | ||
f42faf4f | 642 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_ir_inode)->i_gl, |
b3b94faa DT |
643 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
644 | &sdp->sd_ir_gh); | |
645 | if (error) { | |
646 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
647 | goto fail_qc_i; | |
648 | } | |
649 | ||
f42faf4f | 650 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_sc_inode)->i_gl, |
b3b94faa DT |
651 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
652 | &sdp->sd_sc_gh); | |
653 | if (error) { | |
654 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
655 | goto fail_ir_gh; | |
656 | } | |
657 | ||
f42faf4f | 658 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_ut_inode)->i_gl, |
b3b94faa DT |
659 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
660 | &sdp->sd_ut_gh); | |
661 | if (error) { | |
662 | fs_err(sdp, "can't lock local \"ut\" file: %d\n", error); | |
663 | goto fail_sc_gh; | |
664 | } | |
665 | ||
f42faf4f | 666 | error = gfs2_glock_nq_init(get_v2ip(sdp->sd_qc_inode)->i_gl, |
b3b94faa DT |
667 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
668 | &sdp->sd_qc_gh); | |
669 | if (error) { | |
670 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
671 | goto fail_ut_gh; | |
672 | } | |
673 | ||
674 | return 0; | |
675 | ||
676 | fail_qc_gh: | |
677 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
678 | ||
679 | fail_ut_gh: | |
680 | gfs2_glock_dq_uninit(&sdp->sd_ut_gh); | |
681 | ||
682 | fail_sc_gh: | |
683 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); | |
684 | ||
685 | fail_ir_gh: | |
686 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); | |
687 | ||
688 | fail_qc_i: | |
f42faf4f | 689 | iput(sdp->sd_qc_inode); |
b3b94faa DT |
690 | |
691 | fail_ut_i: | |
f42faf4f | 692 | iput(sdp->sd_ut_inode); |
b3b94faa DT |
693 | |
694 | fail_sc_i: | |
f42faf4f | 695 | iput(sdp->sd_sc_inode); |
b3b94faa DT |
696 | |
697 | fail_ir_i: | |
f42faf4f | 698 | iput(sdp->sd_ir_inode); |
b3b94faa DT |
699 | |
700 | fail: | |
701 | if (pn) | |
f42faf4f | 702 | iput(pn); |
b3b94faa DT |
703 | return error; |
704 | } | |
705 | ||
706 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
707 | { | |
708 | struct task_struct *p; | |
709 | int error = 0; | |
710 | ||
711 | if (undo) | |
712 | goto fail_inoded; | |
713 | ||
714 | sdp->sd_log_flush_time = jiffies; | |
715 | sdp->sd_jindex_refresh_time = jiffies; | |
716 | ||
717 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
718 | error = IS_ERR(p); | |
719 | if (error) { | |
720 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
721 | return error; | |
722 | } | |
723 | sdp->sd_logd_process = p; | |
724 | ||
725 | sdp->sd_statfs_sync_time = jiffies; | |
726 | sdp->sd_quota_sync_time = jiffies; | |
727 | ||
728 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
729 | error = IS_ERR(p); | |
730 | if (error) { | |
731 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
732 | goto fail; | |
733 | } | |
734 | sdp->sd_quotad_process = p; | |
735 | ||
736 | p = kthread_run(gfs2_inoded, sdp, "gfs2_inoded"); | |
737 | error = IS_ERR(p); | |
738 | if (error) { | |
739 | fs_err(sdp, "can't start inoded thread: %d\n", error); | |
740 | goto fail_quotad; | |
741 | } | |
742 | sdp->sd_inoded_process = p; | |
743 | ||
744 | return 0; | |
745 | ||
746 | fail_inoded: | |
747 | kthread_stop(sdp->sd_inoded_process); | |
748 | ||
749 | fail_quotad: | |
750 | kthread_stop(sdp->sd_quotad_process); | |
751 | ||
752 | fail: | |
753 | kthread_stop(sdp->sd_logd_process); | |
754 | ||
755 | return error; | |
756 | } | |
757 | ||
758 | /** | |
759 | * fill_super - Read in superblock | |
760 | * @sb: The VFS superblock | |
761 | * @data: Mount options | |
762 | * @silent: Don't complain if it's not a GFS2 filesystem | |
763 | * | |
764 | * Returns: errno | |
765 | */ | |
766 | ||
767 | static int fill_super(struct super_block *sb, void *data, int silent) | |
768 | { | |
769 | struct gfs2_sbd *sdp; | |
770 | struct gfs2_holder mount_gh; | |
771 | int error; | |
772 | ||
773 | sdp = init_sbd(sb); | |
774 | if (!sdp) { | |
775 | printk("GFS2: can't alloc struct gfs2_sbd\n"); | |
776 | return -ENOMEM; | |
777 | } | |
778 | ||
779 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
780 | if (error) { | |
781 | printk("GFS2: can't parse mount arguments\n"); | |
782 | goto fail; | |
783 | } | |
784 | ||
785 | init_vfs(sdp); | |
786 | ||
787 | error = init_names(sdp, silent); | |
788 | if (error) | |
789 | goto fail; | |
790 | ||
791 | error = gfs2_sys_fs_add(sdp); | |
792 | if (error) | |
793 | goto fail; | |
794 | ||
795 | error = gfs2_lm_mount(sdp, silent); | |
796 | if (error) | |
797 | goto fail_sys; | |
798 | ||
799 | error = init_locking(sdp, &mount_gh, DO); | |
800 | if (error) | |
801 | goto fail_lm; | |
802 | ||
803 | error = init_sb(sdp, silent, DO); | |
804 | if (error) | |
805 | goto fail_locking; | |
b3b94faa DT |
806 | |
807 | error = init_inodes(sdp, DO); | |
808 | if (error) | |
f42faf4f | 809 | goto fail_sb; |
b3b94faa DT |
810 | |
811 | error = init_per_node(sdp, DO); | |
812 | if (error) | |
813 | goto fail_inodes; | |
814 | ||
815 | error = gfs2_statfs_init(sdp); | |
816 | if (error) { | |
817 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
818 | goto fail_per_node; | |
819 | } | |
820 | ||
821 | error = init_threads(sdp, DO); | |
822 | if (error) | |
823 | goto fail_per_node; | |
824 | ||
825 | if (!(sb->s_flags & MS_RDONLY)) { | |
826 | error = gfs2_make_fs_rw(sdp); | |
827 | if (error) { | |
828 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
829 | goto fail_threads; | |
830 | } | |
831 | } | |
832 | ||
833 | gfs2_glock_dq_uninit(&mount_gh); | |
834 | ||
835 | return 0; | |
836 | ||
837 | fail_threads: | |
838 | init_threads(sdp, UNDO); | |
839 | ||
840 | fail_per_node: | |
841 | init_per_node(sdp, UNDO); | |
842 | ||
843 | fail_inodes: | |
844 | init_inodes(sdp, UNDO); | |
845 | ||
b3b94faa DT |
846 | fail_sb: |
847 | init_sb(sdp, 0, UNDO); | |
848 | ||
849 | fail_locking: | |
850 | init_locking(sdp, &mount_gh, UNDO); | |
851 | ||
852 | fail_lm: | |
853 | gfs2_gl_hash_clear(sdp, WAIT); | |
854 | gfs2_lm_unmount(sdp); | |
855 | while (invalidate_inodes(sb)) | |
856 | yield(); | |
857 | ||
858 | fail_sys: | |
859 | gfs2_sys_fs_del(sdp); | |
860 | ||
861 | fail: | |
862 | vfree(sdp); | |
863 | set_v2sdp(sb, NULL); | |
864 | ||
865 | return error; | |
866 | } | |
867 | ||
868 | static struct super_block *gfs2_get_sb(struct file_system_type *fs_type, | |
869 | int flags, const char *dev_name, | |
870 | void *data) | |
871 | { | |
872 | return get_sb_bdev(fs_type, flags, dev_name, data, fill_super); | |
873 | } | |
874 | ||
875 | struct file_system_type gfs2_fs_type = { | |
876 | .name = "gfs2", | |
877 | .fs_flags = FS_REQUIRES_DEV, | |
878 | .get_sb = gfs2_get_sb, | |
879 | .kill_sb = kill_block_super, | |
880 | .owner = THIS_MODULE, | |
881 | }; | |
882 |