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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. | |
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> | |
5c676f6d | 18 | #include <linux/gfs2_ondisk.h> |
b3b94faa DT |
19 | #include <asm/semaphore.h> |
20 | ||
21 | #include "gfs2.h" | |
5c676f6d SW |
22 | #include "lm_interface.h" |
23 | #include "incore.h" | |
b3b94faa DT |
24 | #include "daemon.h" |
25 | #include "glock.h" | |
26 | #include "glops.h" | |
27 | #include "inode.h" | |
28 | #include "lm.h" | |
29 | #include "mount.h" | |
30 | #include "ops_export.h" | |
31 | #include "ops_fstype.h" | |
32 | #include "ops_super.h" | |
33 | #include "recovery.h" | |
34 | #include "rgrp.h" | |
35 | #include "super.h" | |
36 | #include "unlinked.h" | |
37 | #include "sys.h" | |
5c676f6d | 38 | #include "util.h" |
b3b94faa DT |
39 | |
40 | #define DO 0 | |
41 | #define UNDO 1 | |
42 | ||
43 | static struct gfs2_sbd *init_sbd(struct super_block *sb) | |
44 | { | |
45 | struct gfs2_sbd *sdp; | |
46 | unsigned int x; | |
47 | ||
48 | sdp = vmalloc(sizeof(struct gfs2_sbd)); | |
49 | if (!sdp) | |
50 | return NULL; | |
51 | ||
52 | memset(sdp, 0, sizeof(struct gfs2_sbd)); | |
53 | ||
5c676f6d | 54 | sb->s_fs_info = sdp; |
b3b94faa DT |
55 | sdp->sd_vfs = sb; |
56 | ||
57 | gfs2_tune_init(&sdp->sd_tune); | |
58 | ||
59 | for (x = 0; x < GFS2_GL_HASH_SIZE; x++) { | |
60 | sdp->sd_gl_hash[x].hb_lock = RW_LOCK_UNLOCKED; | |
61 | INIT_LIST_HEAD(&sdp->sd_gl_hash[x].hb_list); | |
62 | } | |
63 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); | |
64 | spin_lock_init(&sdp->sd_reclaim_lock); | |
65 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
f55ab26a | 66 | mutex_init(&sdp->sd_invalidate_inodes_mutex); |
b3b94faa | 67 | |
f55ab26a | 68 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 69 | spin_lock_init(&sdp->sd_statfs_spin); |
f55ab26a | 70 | mutex_init(&sdp->sd_statfs_mutex); |
b3b94faa DT |
71 | |
72 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 73 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
74 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
75 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
76 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
77 | ||
78 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
79 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 80 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa DT |
81 | |
82 | INIT_LIST_HEAD(&sdp->sd_unlinked_list); | |
83 | spin_lock_init(&sdp->sd_unlinked_spin); | |
f55ab26a | 84 | mutex_init(&sdp->sd_unlinked_mutex); |
b3b94faa DT |
85 | |
86 | INIT_LIST_HEAD(&sdp->sd_quota_list); | |
87 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 88 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
89 | |
90 | spin_lock_init(&sdp->sd_log_lock); | |
91 | init_waitqueue_head(&sdp->sd_log_trans_wq); | |
92 | init_waitqueue_head(&sdp->sd_log_flush_wq); | |
93 | ||
94 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); | |
95 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); | |
96 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
97 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
98 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
99 | ||
100 | INIT_LIST_HEAD(&sdp->sd_log_blks_list); | |
101 | init_waitqueue_head(&sdp->sd_log_blks_wait); | |
102 | ||
103 | INIT_LIST_HEAD(&sdp->sd_ail1_list); | |
104 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
105 | ||
f55ab26a | 106 | mutex_init(&sdp->sd_log_flush_lock); |
b3b94faa DT |
107 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
108 | ||
109 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
110 | ||
f55ab26a | 111 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
112 | |
113 | return sdp; | |
114 | } | |
115 | ||
116 | static void init_vfs(struct gfs2_sbd *sdp) | |
117 | { | |
118 | struct super_block *sb = sdp->sd_vfs; | |
119 | ||
120 | sb->s_magic = GFS2_MAGIC; | |
121 | sb->s_op = &gfs2_super_ops; | |
122 | sb->s_export_op = &gfs2_export_ops; | |
123 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
124 | ||
125 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
126 | set_bit(SDF_NOATIME, &sdp->sd_flags); | |
127 | ||
128 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
129 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
130 | ||
131 | /* Set up the buffer cache and fill in some fake block size values | |
132 | to allow us to read-in the on-disk superblock. */ | |
133 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
134 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
568f4c96 SW |
135 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
136 | GFS2_BASIC_BLOCK_SHIFT; | |
b3b94faa DT |
137 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; |
138 | } | |
139 | ||
140 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
141 | { | |
142 | struct gfs2_sb *sb = NULL; | |
143 | char *proto, *table; | |
144 | int error = 0; | |
145 | ||
146 | proto = sdp->sd_args.ar_lockproto; | |
147 | table = sdp->sd_args.ar_locktable; | |
148 | ||
149 | /* Try to autodetect */ | |
150 | ||
151 | if (!proto[0] || !table[0]) { | |
152 | struct buffer_head *bh; | |
153 | bh = sb_getblk(sdp->sd_vfs, | |
154 | GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
155 | lock_buffer(bh); | |
156 | clear_buffer_uptodate(bh); | |
157 | clear_buffer_dirty(bh); | |
158 | unlock_buffer(bh); | |
159 | ll_rw_block(READ, 1, &bh); | |
160 | wait_on_buffer(bh); | |
161 | ||
162 | if (!buffer_uptodate(bh)) { | |
163 | brelse(bh); | |
164 | return -EIO; | |
165 | } | |
166 | ||
167 | sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL); | |
168 | if (!sb) { | |
169 | brelse(bh); | |
170 | return -ENOMEM; | |
171 | } | |
172 | gfs2_sb_in(sb, bh->b_data); | |
173 | brelse(bh); | |
174 | ||
175 | error = gfs2_check_sb(sdp, sb, silent); | |
176 | if (error) | |
177 | goto out; | |
178 | ||
179 | if (!proto[0]) | |
180 | proto = sb->sb_lockproto; | |
181 | if (!table[0]) | |
182 | table = sb->sb_locktable; | |
183 | } | |
184 | ||
185 | if (!table[0]) | |
186 | table = sdp->sd_vfs->s_id; | |
187 | ||
188 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
189 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
190 | ||
191 | out: | |
192 | kfree(sb); | |
193 | ||
194 | return error; | |
195 | } | |
196 | ||
197 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
198 | int undo) | |
199 | { | |
200 | struct task_struct *p; | |
201 | int error = 0; | |
202 | ||
203 | if (undo) | |
204 | goto fail_trans; | |
205 | ||
206 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); | |
207 | error = IS_ERR(p); | |
208 | if (error) { | |
209 | fs_err(sdp, "can't start scand thread: %d\n", error); | |
210 | return error; | |
211 | } | |
212 | sdp->sd_scand_process = p; | |
213 | ||
214 | for (sdp->sd_glockd_num = 0; | |
215 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
216 | sdp->sd_glockd_num++) { | |
217 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
218 | error = IS_ERR(p); | |
219 | if (error) { | |
220 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
221 | goto fail; | |
222 | } | |
223 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
224 | } | |
225 | ||
226 | error = gfs2_glock_nq_num(sdp, | |
227 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
228 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
229 | mount_gh); | |
230 | if (error) { | |
231 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
232 | goto fail; | |
233 | } | |
234 | ||
235 | error = gfs2_glock_nq_num(sdp, | |
236 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
237 | LM_ST_SHARED, | |
238 | LM_FLAG_NOEXP | GL_EXACT | GL_NEVER_RECURSE, | |
239 | &sdp->sd_live_gh); | |
240 | if (error) { | |
241 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
242 | goto fail_mount; | |
243 | } | |
244 | ||
245 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
246 | CREATE, &sdp->sd_rename_gl); | |
247 | if (error) { | |
248 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
249 | goto fail_live; | |
250 | } | |
251 | ||
252 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
253 | CREATE, &sdp->sd_trans_gl); | |
254 | if (error) { | |
255 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
256 | goto fail_rename; | |
257 | } | |
258 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
259 | ||
260 | return 0; | |
261 | ||
262 | fail_trans: | |
263 | gfs2_glock_put(sdp->sd_trans_gl); | |
264 | ||
265 | fail_rename: | |
266 | gfs2_glock_put(sdp->sd_rename_gl); | |
267 | ||
268 | fail_live: | |
269 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
270 | ||
271 | fail_mount: | |
272 | gfs2_glock_dq_uninit(mount_gh); | |
273 | ||
274 | fail: | |
275 | while (sdp->sd_glockd_num--) | |
276 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
277 | ||
278 | kthread_stop(sdp->sd_scand_process); | |
279 | ||
280 | return error; | |
281 | } | |
282 | ||
f42faf4f SW |
283 | int gfs2_lookup_root(struct gfs2_sbd *sdp) |
284 | { | |
285 | int error; | |
286 | struct gfs2_glock *gl; | |
287 | struct gfs2_inode *ip; | |
288 | ||
289 | error = gfs2_glock_get(sdp, sdp->sd_sb.sb_root_dir.no_addr, | |
290 | &gfs2_inode_glops, CREATE, &gl); | |
291 | if (!error) { | |
292 | error = gfs2_inode_get(gl, &sdp->sd_sb.sb_root_dir, | |
293 | CREATE, &ip); | |
294 | if (!error) { | |
295 | if (!error) | |
296 | gfs2_inode_min_init(ip, DT_DIR); | |
297 | sdp->sd_root_dir = gfs2_ip2v(ip); | |
298 | gfs2_inode_put(ip); | |
299 | } | |
300 | gfs2_glock_put(gl); | |
301 | } | |
302 | ||
303 | return error; | |
304 | } | |
305 | ||
b3b94faa DT |
306 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
307 | { | |
308 | struct super_block *sb = sdp->sd_vfs; | |
309 | struct gfs2_holder sb_gh; | |
f42faf4f | 310 | struct inode *inode; |
b3b94faa DT |
311 | int error = 0; |
312 | ||
313 | if (undo) { | |
f42faf4f | 314 | iput(sdp->sd_master_dir); |
b3b94faa DT |
315 | return 0; |
316 | } | |
317 | ||
318 | error = gfs2_glock_nq_num(sdp, | |
319 | GFS2_SB_LOCK, &gfs2_meta_glops, | |
320 | LM_ST_SHARED, 0, &sb_gh); | |
321 | if (error) { | |
322 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
323 | return error; | |
324 | } | |
325 | ||
326 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
327 | if (error) { | |
328 | fs_err(sdp, "can't read superblock: %d\n", error); | |
329 | goto out; | |
330 | } | |
331 | ||
332 | /* Set up the buffer cache and SB for real */ | |
333 | error = -EINVAL; | |
334 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { | |
335 | fs_err(sdp, "FS block size (%u) is too small for device " | |
336 | "block size (%u)\n", | |
337 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
338 | goto out; | |
339 | } | |
340 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
341 | fs_err(sdp, "FS block size (%u) is too big for machine " | |
342 | "page size (%u)\n", | |
343 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
344 | goto out; | |
345 | } | |
346 | ||
347 | /* Get rid of buffers from the original block size */ | |
348 | sb_gh.gh_gl->gl_ops->go_inval(sb_gh.gh_gl, DIO_METADATA | DIO_DATA); | |
349 | sb_gh.gh_gl->gl_aspace->i_blkbits = sdp->sd_sb.sb_bsize_shift; | |
350 | ||
351 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); | |
352 | ||
f42faf4f SW |
353 | /* Get the root inode */ |
354 | error = gfs2_lookup_root(sdp); | |
355 | if (error) { | |
356 | fs_err(sdp, "can't read in root inode: %d\n", error); | |
357 | goto out; | |
358 | } | |
b3b94faa | 359 | |
f42faf4f SW |
360 | /* Get the root inode/dentry */ |
361 | inode = sdp->sd_root_dir; | |
362 | if (!inode) { | |
363 | fs_err(sdp, "can't get root inode\n"); | |
364 | error = -ENOMEM; | |
365 | goto out_rooti; | |
366 | } | |
367 | ||
7359a19c | 368 | igrab(inode); |
f42faf4f SW |
369 | sb->s_root = d_alloc_root(inode); |
370 | if (!sb->s_root) { | |
371 | fs_err(sdp, "can't get root dentry\n"); | |
372 | error = -ENOMEM; | |
373 | goto out_rooti; | |
374 | } | |
375 | ||
376 | out: | |
b3b94faa DT |
377 | gfs2_glock_dq_uninit(&sb_gh); |
378 | ||
379 | return error; | |
f42faf4f SW |
380 | out_rooti: |
381 | iput(sdp->sd_root_dir); | |
382 | goto out; | |
b3b94faa DT |
383 | } |
384 | ||
385 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
386 | { | |
387 | struct gfs2_holder ji_gh; | |
388 | struct task_struct *p; | |
5c676f6d | 389 | struct gfs2_inode *ip; |
b3b94faa DT |
390 | int jindex = 1; |
391 | int error = 0; | |
392 | ||
393 | if (undo) { | |
394 | jindex = 0; | |
395 | goto fail_recoverd; | |
396 | } | |
397 | ||
398 | error = gfs2_lookup_simple(sdp->sd_master_dir, "jindex", | |
399 | &sdp->sd_jindex); | |
400 | if (error) { | |
401 | fs_err(sdp, "can't lookup journal index: %d\n", error); | |
402 | return error; | |
403 | } | |
5c676f6d SW |
404 | ip = sdp->sd_jindex->u.generic_ip; |
405 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); | |
b3b94faa DT |
406 | |
407 | /* Load in the journal index special file */ | |
408 | ||
409 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
410 | if (error) { | |
411 | fs_err(sdp, "can't read journal index: %d\n", error); | |
412 | goto fail; | |
413 | } | |
414 | ||
415 | error = -EINVAL; | |
416 | if (!gfs2_jindex_size(sdp)) { | |
417 | fs_err(sdp, "no journals!\n"); | |
418 | goto fail_jindex; | |
419 | } | |
420 | ||
421 | if (sdp->sd_args.ar_spectator) { | |
422 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
423 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
424 | } else { | |
425 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
426 | fs_err(sdp, "can't mount journal #%u\n", | |
427 | sdp->sd_lockstruct.ls_jid); | |
428 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
429 | gfs2_jindex_size(sdp), | |
430 | gfs2_jindex_size(sdp) - 1); | |
431 | goto fail_jindex; | |
432 | } | |
433 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
434 | ||
435 | error = gfs2_glock_nq_num(sdp, | |
436 | sdp->sd_lockstruct.ls_jid, | |
437 | &gfs2_journal_glops, | |
438 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
439 | &sdp->sd_journal_gh); | |
440 | if (error) { | |
441 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
442 | goto fail_jindex; | |
443 | } | |
444 | ||
5c676f6d SW |
445 | ip = sdp->sd_jdesc->jd_inode->u.generic_ip; |
446 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
447 | LM_ST_SHARED, |
448 | LM_FLAG_NOEXP | GL_EXACT, | |
449 | &sdp->sd_jinode_gh); | |
450 | if (error) { | |
451 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
452 | error); | |
453 | goto fail_journal_gh; | |
454 | } | |
455 | ||
456 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
457 | if (error) { | |
458 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
459 | sdp->sd_jdesc->jd_jid, error); | |
460 | goto fail_jinode_gh; | |
461 | } | |
462 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
463 | } | |
464 | ||
465 | if (sdp->sd_lockstruct.ls_first) { | |
466 | unsigned int x; | |
467 | for (x = 0; x < sdp->sd_journals; x++) { | |
468 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), | |
469 | WAIT); | |
470 | if (error) { | |
471 | fs_err(sdp, "error recovering journal %u: %d\n", | |
472 | x, error); | |
473 | goto fail_jinode_gh; | |
474 | } | |
475 | } | |
476 | ||
477 | gfs2_lm_others_may_mount(sdp); | |
478 | } else if (!sdp->sd_args.ar_spectator) { | |
479 | error = gfs2_recover_journal(sdp->sd_jdesc, WAIT); | |
480 | if (error) { | |
481 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
482 | goto fail_jinode_gh; | |
483 | } | |
484 | } | |
485 | ||
486 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
487 | gfs2_glock_dq_uninit(&ji_gh); | |
488 | jindex = 0; | |
489 | ||
490 | /* Disown my Journal glock */ | |
491 | ||
492 | sdp->sd_journal_gh.gh_owner = NULL; | |
493 | sdp->sd_jinode_gh.gh_owner = NULL; | |
494 | ||
495 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); | |
496 | error = IS_ERR(p); | |
497 | if (error) { | |
498 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
499 | goto fail_jinode_gh; | |
500 | } | |
501 | sdp->sd_recoverd_process = p; | |
502 | ||
503 | return 0; | |
504 | ||
505 | fail_recoverd: | |
506 | kthread_stop(sdp->sd_recoverd_process); | |
507 | ||
508 | fail_jinode_gh: | |
509 | if (!sdp->sd_args.ar_spectator) | |
510 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
511 | ||
512 | fail_journal_gh: | |
513 | if (!sdp->sd_args.ar_spectator) | |
514 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
515 | ||
516 | fail_jindex: | |
517 | gfs2_jindex_free(sdp); | |
518 | if (jindex) | |
519 | gfs2_glock_dq_uninit(&ji_gh); | |
520 | ||
521 | fail: | |
f42faf4f | 522 | iput(sdp->sd_jindex); |
b3b94faa DT |
523 | |
524 | return error; | |
525 | } | |
526 | ||
b3b94faa DT |
527 | |
528 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
529 | { | |
b3b94faa | 530 | int error = 0; |
5c676f6d | 531 | struct gfs2_inode *ip; |
b3b94faa DT |
532 | |
533 | if (undo) | |
f42faf4f SW |
534 | goto fail_qinode; |
535 | ||
536 | error = gfs2_lookup_master_dir(sdp); | |
537 | if (error) { | |
538 | fs_err(sdp, "can't read in master directory: %d\n", error); | |
539 | goto fail; | |
540 | } | |
541 | ||
542 | error = init_journal(sdp, undo); | |
543 | if (error) | |
544 | goto fail_master; | |
b3b94faa DT |
545 | |
546 | /* Read in the master inode number inode */ | |
547 | error = gfs2_lookup_simple(sdp->sd_master_dir, "inum", | |
548 | &sdp->sd_inum_inode); | |
549 | if (error) { | |
550 | fs_err(sdp, "can't read in inum inode: %d\n", error); | |
f42faf4f | 551 | goto fail_journal; |
b3b94faa DT |
552 | } |
553 | ||
f42faf4f | 554 | |
b3b94faa DT |
555 | /* Read in the master statfs inode */ |
556 | error = gfs2_lookup_simple(sdp->sd_master_dir, "statfs", | |
557 | &sdp->sd_statfs_inode); | |
558 | if (error) { | |
559 | fs_err(sdp, "can't read in statfs inode: %d\n", error); | |
f42faf4f | 560 | goto fail_inum; |
b3b94faa DT |
561 | } |
562 | ||
563 | /* Read in the resource index inode */ | |
564 | error = gfs2_lookup_simple(sdp->sd_master_dir, "rindex", | |
565 | &sdp->sd_rindex); | |
566 | if (error) { | |
567 | fs_err(sdp, "can't get resource index inode: %d\n", error); | |
568 | goto fail_statfs; | |
569 | } | |
5c676f6d SW |
570 | ip = sdp->sd_rindex->u.generic_ip; |
571 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); | |
572 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
573 | |
574 | /* Read in the quota inode */ | |
575 | error = gfs2_lookup_simple(sdp->sd_master_dir, "quota", | |
576 | &sdp->sd_quota_inode); | |
577 | if (error) { | |
578 | fs_err(sdp, "can't get quota file inode: %d\n", error); | |
579 | goto fail_rindex; | |
580 | } | |
b3b94faa DT |
581 | return 0; |
582 | ||
f42faf4f SW |
583 | fail_qinode: |
584 | iput(sdp->sd_quota_inode); | |
b3b94faa | 585 | |
f42faf4f | 586 | fail_rindex: |
b3b94faa | 587 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 588 | iput(sdp->sd_rindex); |
b3b94faa | 589 | |
f42faf4f SW |
590 | fail_statfs: |
591 | iput(sdp->sd_statfs_inode); | |
b3b94faa | 592 | |
f42faf4f SW |
593 | fail_inum: |
594 | iput(sdp->sd_inum_inode); | |
595 | fail_journal: | |
596 | init_journal(sdp, UNDO); | |
597 | fail_master: | |
598 | iput(sdp->sd_master_dir); | |
599 | fail: | |
b3b94faa DT |
600 | return error; |
601 | } | |
602 | ||
603 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
604 | { | |
f42faf4f | 605 | struct inode *pn = NULL; |
b3b94faa DT |
606 | char buf[30]; |
607 | int error = 0; | |
5c676f6d | 608 | struct gfs2_inode *ip; |
b3b94faa DT |
609 | |
610 | if (sdp->sd_args.ar_spectator) | |
611 | return 0; | |
612 | ||
613 | if (undo) | |
614 | goto fail_qc_gh; | |
615 | ||
616 | error = gfs2_lookup_simple(sdp->sd_master_dir, "per_node", &pn); | |
617 | if (error) { | |
618 | fs_err(sdp, "can't find per_node directory: %d\n", error); | |
619 | return error; | |
620 | } | |
621 | ||
622 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
623 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_ir_inode); | |
624 | if (error) { | |
625 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); | |
626 | goto fail; | |
627 | } | |
628 | ||
629 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
630 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_sc_inode); | |
631 | if (error) { | |
632 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); | |
633 | goto fail_ir_i; | |
634 | } | |
635 | ||
636 | sprintf(buf, "unlinked_tag%u", sdp->sd_jdesc->jd_jid); | |
637 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_ut_inode); | |
638 | if (error) { | |
639 | fs_err(sdp, "can't find local \"ut\" file: %d\n", error); | |
640 | goto fail_sc_i; | |
641 | } | |
642 | ||
643 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); | |
644 | error = gfs2_lookup_simple(pn, buf, &sdp->sd_qc_inode); | |
645 | if (error) { | |
646 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); | |
647 | goto fail_ut_i; | |
648 | } | |
649 | ||
f42faf4f | 650 | iput(pn); |
b3b94faa DT |
651 | pn = NULL; |
652 | ||
5c676f6d SW |
653 | ip = sdp->sd_ir_inode->u.generic_ip; |
654 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
655 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
656 | &sdp->sd_ir_gh); | |
657 | if (error) { | |
658 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
659 | goto fail_qc_i; | |
660 | } | |
661 | ||
5c676f6d SW |
662 | ip = sdp->sd_sc_inode->u.generic_ip; |
663 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
664 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
665 | &sdp->sd_sc_gh); | |
666 | if (error) { | |
667 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
668 | goto fail_ir_gh; | |
669 | } | |
670 | ||
5c676f6d SW |
671 | ip = sdp->sd_ut_inode->u.generic_ip; |
672 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
673 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
674 | &sdp->sd_ut_gh); | |
675 | if (error) { | |
676 | fs_err(sdp, "can't lock local \"ut\" file: %d\n", error); | |
677 | goto fail_sc_gh; | |
678 | } | |
679 | ||
5c676f6d SW |
680 | ip = sdp->sd_qc_inode->u.generic_ip; |
681 | error = gfs2_glock_nq_init(ip->i_gl, | |
b3b94faa DT |
682 | LM_ST_EXCLUSIVE, GL_NEVER_RECURSE, |
683 | &sdp->sd_qc_gh); | |
684 | if (error) { | |
685 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
686 | goto fail_ut_gh; | |
687 | } | |
688 | ||
689 | return 0; | |
690 | ||
691 | fail_qc_gh: | |
692 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
693 | ||
694 | fail_ut_gh: | |
695 | gfs2_glock_dq_uninit(&sdp->sd_ut_gh); | |
696 | ||
697 | fail_sc_gh: | |
698 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); | |
699 | ||
700 | fail_ir_gh: | |
701 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); | |
702 | ||
703 | fail_qc_i: | |
f42faf4f | 704 | iput(sdp->sd_qc_inode); |
b3b94faa DT |
705 | |
706 | fail_ut_i: | |
f42faf4f | 707 | iput(sdp->sd_ut_inode); |
b3b94faa DT |
708 | |
709 | fail_sc_i: | |
f42faf4f | 710 | iput(sdp->sd_sc_inode); |
b3b94faa DT |
711 | |
712 | fail_ir_i: | |
f42faf4f | 713 | iput(sdp->sd_ir_inode); |
b3b94faa DT |
714 | |
715 | fail: | |
716 | if (pn) | |
f42faf4f | 717 | iput(pn); |
b3b94faa DT |
718 | return error; |
719 | } | |
720 | ||
721 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
722 | { | |
723 | struct task_struct *p; | |
724 | int error = 0; | |
725 | ||
726 | if (undo) | |
727 | goto fail_inoded; | |
728 | ||
729 | sdp->sd_log_flush_time = jiffies; | |
730 | sdp->sd_jindex_refresh_time = jiffies; | |
731 | ||
732 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
733 | error = IS_ERR(p); | |
734 | if (error) { | |
735 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
736 | return error; | |
737 | } | |
738 | sdp->sd_logd_process = p; | |
739 | ||
740 | sdp->sd_statfs_sync_time = jiffies; | |
741 | sdp->sd_quota_sync_time = jiffies; | |
742 | ||
743 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
744 | error = IS_ERR(p); | |
745 | if (error) { | |
746 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
747 | goto fail; | |
748 | } | |
749 | sdp->sd_quotad_process = p; | |
750 | ||
751 | p = kthread_run(gfs2_inoded, sdp, "gfs2_inoded"); | |
752 | error = IS_ERR(p); | |
753 | if (error) { | |
754 | fs_err(sdp, "can't start inoded thread: %d\n", error); | |
755 | goto fail_quotad; | |
756 | } | |
757 | sdp->sd_inoded_process = p; | |
758 | ||
759 | return 0; | |
760 | ||
761 | fail_inoded: | |
762 | kthread_stop(sdp->sd_inoded_process); | |
763 | ||
764 | fail_quotad: | |
765 | kthread_stop(sdp->sd_quotad_process); | |
766 | ||
767 | fail: | |
768 | kthread_stop(sdp->sd_logd_process); | |
769 | ||
770 | return error; | |
771 | } | |
772 | ||
773 | /** | |
774 | * fill_super - Read in superblock | |
775 | * @sb: The VFS superblock | |
776 | * @data: Mount options | |
777 | * @silent: Don't complain if it's not a GFS2 filesystem | |
778 | * | |
779 | * Returns: errno | |
780 | */ | |
781 | ||
782 | static int fill_super(struct super_block *sb, void *data, int silent) | |
783 | { | |
784 | struct gfs2_sbd *sdp; | |
785 | struct gfs2_holder mount_gh; | |
786 | int error; | |
787 | ||
788 | sdp = init_sbd(sb); | |
789 | if (!sdp) { | |
d92a8d48 | 790 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
791 | return -ENOMEM; |
792 | } | |
793 | ||
794 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
795 | if (error) { | |
d92a8d48 | 796 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
797 | goto fail; |
798 | } | |
799 | ||
800 | init_vfs(sdp); | |
801 | ||
802 | error = init_names(sdp, silent); | |
803 | if (error) | |
804 | goto fail; | |
805 | ||
806 | error = gfs2_sys_fs_add(sdp); | |
807 | if (error) | |
808 | goto fail; | |
809 | ||
810 | error = gfs2_lm_mount(sdp, silent); | |
811 | if (error) | |
812 | goto fail_sys; | |
813 | ||
814 | error = init_locking(sdp, &mount_gh, DO); | |
815 | if (error) | |
816 | goto fail_lm; | |
817 | ||
818 | error = init_sb(sdp, silent, DO); | |
819 | if (error) | |
820 | goto fail_locking; | |
b3b94faa DT |
821 | |
822 | error = init_inodes(sdp, DO); | |
823 | if (error) | |
f42faf4f | 824 | goto fail_sb; |
b3b94faa DT |
825 | |
826 | error = init_per_node(sdp, DO); | |
827 | if (error) | |
828 | goto fail_inodes; | |
829 | ||
830 | error = gfs2_statfs_init(sdp); | |
831 | if (error) { | |
832 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
833 | goto fail_per_node; | |
834 | } | |
835 | ||
836 | error = init_threads(sdp, DO); | |
837 | if (error) | |
838 | goto fail_per_node; | |
839 | ||
840 | if (!(sb->s_flags & MS_RDONLY)) { | |
841 | error = gfs2_make_fs_rw(sdp); | |
842 | if (error) { | |
843 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
844 | goto fail_threads; | |
845 | } | |
846 | } | |
847 | ||
848 | gfs2_glock_dq_uninit(&mount_gh); | |
849 | ||
850 | return 0; | |
851 | ||
852 | fail_threads: | |
853 | init_threads(sdp, UNDO); | |
854 | ||
855 | fail_per_node: | |
856 | init_per_node(sdp, UNDO); | |
857 | ||
858 | fail_inodes: | |
859 | init_inodes(sdp, UNDO); | |
860 | ||
b3b94faa DT |
861 | fail_sb: |
862 | init_sb(sdp, 0, UNDO); | |
863 | ||
864 | fail_locking: | |
865 | init_locking(sdp, &mount_gh, UNDO); | |
866 | ||
867 | fail_lm: | |
868 | gfs2_gl_hash_clear(sdp, WAIT); | |
869 | gfs2_lm_unmount(sdp); | |
870 | while (invalidate_inodes(sb)) | |
871 | yield(); | |
872 | ||
873 | fail_sys: | |
874 | gfs2_sys_fs_del(sdp); | |
875 | ||
876 | fail: | |
877 | vfree(sdp); | |
5c676f6d | 878 | sb->s_fs_info = NULL; |
b3b94faa DT |
879 | |
880 | return error; | |
881 | } | |
882 | ||
883 | static struct super_block *gfs2_get_sb(struct file_system_type *fs_type, | |
884 | int flags, const char *dev_name, | |
885 | void *data) | |
886 | { | |
887 | return get_sb_bdev(fs_type, flags, dev_name, data, fill_super); | |
888 | } | |
889 | ||
890 | struct file_system_type gfs2_fs_type = { | |
891 | .name = "gfs2", | |
892 | .fs_flags = FS_REQUIRES_DEV, | |
893 | .get_sb = gfs2_get_sb, | |
894 | .kill_sb = kill_block_super, | |
895 | .owner = THIS_MODULE, | |
896 | }; | |
897 |