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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 | ||
176 | out: | |
177 | kfree(sb); | |
178 | ||
179 | return error; | |
180 | } | |
181 | ||
182 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
183 | int undo) | |
184 | { | |
185 | struct task_struct *p; | |
186 | int error = 0; | |
187 | ||
188 | if (undo) | |
189 | goto fail_trans; | |
190 | ||
191 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); | |
192 | error = IS_ERR(p); | |
193 | if (error) { | |
194 | fs_err(sdp, "can't start scand thread: %d\n", error); | |
195 | return error; | |
196 | } | |
197 | sdp->sd_scand_process = p; | |
198 | ||
199 | for (sdp->sd_glockd_num = 0; | |
200 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
201 | sdp->sd_glockd_num++) { | |
202 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
203 | error = IS_ERR(p); | |
204 | if (error) { | |
205 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
206 | goto fail; | |
207 | } | |
208 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
209 | } | |
210 | ||
211 | error = gfs2_glock_nq_num(sdp, | |
212 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
213 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
214 | mount_gh); | |
215 | if (error) { | |
216 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
217 | goto fail; | |
218 | } | |
219 | ||
220 | error = gfs2_glock_nq_num(sdp, | |
221 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
222 | LM_ST_SHARED, | |
579b78a4 | 223 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
224 | &sdp->sd_live_gh); |
225 | if (error) { | |
226 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
227 | goto fail_mount; | |
228 | } | |
229 | ||
230 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
231 | CREATE, &sdp->sd_rename_gl); | |
232 | if (error) { | |
233 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
234 | goto fail_live; | |
235 | } | |
236 | ||
237 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
238 | CREATE, &sdp->sd_trans_gl); | |
239 | if (error) { | |
240 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
241 | goto fail_rename; | |
242 | } | |
243 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
244 | ||
245 | return 0; | |
246 | ||
feaa7bba | 247 | fail_trans: |
b3b94faa DT |
248 | gfs2_glock_put(sdp->sd_trans_gl); |
249 | ||
feaa7bba | 250 | fail_rename: |
b3b94faa DT |
251 | gfs2_glock_put(sdp->sd_rename_gl); |
252 | ||
feaa7bba | 253 | fail_live: |
b3b94faa DT |
254 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
255 | ||
feaa7bba | 256 | fail_mount: |
b3b94faa DT |
257 | gfs2_glock_dq_uninit(mount_gh); |
258 | ||
feaa7bba | 259 | fail: |
b3b94faa DT |
260 | while (sdp->sd_glockd_num--) |
261 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
262 | ||
263 | kthread_stop(sdp->sd_scand_process); | |
264 | ||
265 | return error; | |
266 | } | |
267 | ||
feaa7bba SW |
268 | static struct inode *gfs2_lookup_root(struct super_block *sb, |
269 | struct gfs2_inum *inum) | |
f42faf4f | 270 | { |
feaa7bba | 271 | return gfs2_inode_lookup(sb, inum, DT_DIR); |
f42faf4f SW |
272 | } |
273 | ||
b3b94faa DT |
274 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
275 | { | |
276 | struct super_block *sb = sdp->sd_vfs; | |
277 | struct gfs2_holder sb_gh; | |
419c93e0 | 278 | struct gfs2_inum *inum; |
f42faf4f | 279 | struct inode *inode; |
b3b94faa DT |
280 | int error = 0; |
281 | ||
282 | if (undo) { | |
88721877 RC |
283 | if (sb->s_root) { |
284 | dput(sb->s_root); | |
285 | sb->s_root = NULL; | |
286 | } | |
b3b94faa DT |
287 | return 0; |
288 | } | |
289 | ||
feaa7bba | 290 | error = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
b3b94faa DT |
291 | LM_ST_SHARED, 0, &sb_gh); |
292 | if (error) { | |
293 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
294 | return error; | |
295 | } | |
296 | ||
297 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
298 | if (error) { | |
299 | fs_err(sdp, "can't read superblock: %d\n", error); | |
300 | goto out; | |
301 | } | |
302 | ||
303 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 304 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 305 | error = -EINVAL; |
b3b94faa DT |
306 | fs_err(sdp, "FS block size (%u) is too small for device " |
307 | "block size (%u)\n", | |
308 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
309 | goto out; | |
310 | } | |
311 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 312 | error = -EINVAL; |
b3b94faa DT |
313 | fs_err(sdp, "FS block size (%u) is too big for machine " |
314 | "page size (%u)\n", | |
315 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
316 | goto out; | |
317 | } | |
b3b94faa DT |
318 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
319 | ||
f42faf4f | 320 | /* Get the root inode */ |
419c93e0 SW |
321 | inum = &sdp->sd_sb.sb_root_dir; |
322 | if (sb->s_type == &gfs2meta_fs_type) | |
323 | inum = &sdp->sd_sb.sb_master_dir; | |
feaa7bba | 324 | inode = gfs2_lookup_root(sb, inum); |
c9fd4307 SW |
325 | if (IS_ERR(inode)) { |
326 | error = PTR_ERR(inode); | |
f42faf4f SW |
327 | fs_err(sdp, "can't read in root inode: %d\n", error); |
328 | goto out; | |
329 | } | |
b3b94faa | 330 | |
f42faf4f SW |
331 | sb->s_root = d_alloc_root(inode); |
332 | if (!sb->s_root) { | |
333 | fs_err(sdp, "can't get root dentry\n"); | |
334 | error = -ENOMEM; | |
c9fd4307 | 335 | iput(inode); |
f42faf4f | 336 | } |
5bb76af1 | 337 | sb->s_root->d_op = &gfs2_dops; |
f42faf4f | 338 | out: |
b3b94faa | 339 | gfs2_glock_dq_uninit(&sb_gh); |
b3b94faa DT |
340 | return error; |
341 | } | |
342 | ||
343 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
344 | { | |
345 | struct gfs2_holder ji_gh; | |
346 | struct task_struct *p; | |
5c676f6d | 347 | struct gfs2_inode *ip; |
b3b94faa DT |
348 | int jindex = 1; |
349 | int error = 0; | |
350 | ||
351 | if (undo) { | |
352 | jindex = 0; | |
353 | goto fail_recoverd; | |
354 | } | |
355 | ||
c752666c SW |
356 | sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex"); |
357 | if (IS_ERR(sdp->sd_jindex)) { | |
b3b94faa | 358 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 359 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 360 | } |
feaa7bba | 361 | ip = GFS2_I(sdp->sd_jindex); |
5c676f6d | 362 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
b3b94faa DT |
363 | |
364 | /* Load in the journal index special file */ | |
365 | ||
366 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
367 | if (error) { | |
368 | fs_err(sdp, "can't read journal index: %d\n", error); | |
369 | goto fail; | |
370 | } | |
371 | ||
372 | error = -EINVAL; | |
373 | if (!gfs2_jindex_size(sdp)) { | |
374 | fs_err(sdp, "no journals!\n"); | |
375 | goto fail_jindex; | |
376 | } | |
377 | ||
378 | if (sdp->sd_args.ar_spectator) { | |
379 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
380 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
381 | } else { | |
382 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
383 | fs_err(sdp, "can't mount journal #%u\n", | |
384 | sdp->sd_lockstruct.ls_jid); | |
385 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
386 | gfs2_jindex_size(sdp), | |
387 | gfs2_jindex_size(sdp) - 1); | |
388 | goto fail_jindex; | |
389 | } | |
390 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
391 | ||
feaa7bba | 392 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
393 | &gfs2_journal_glops, |
394 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
395 | &sdp->sd_journal_gh); | |
396 | if (error) { | |
397 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
398 | goto fail_jindex; | |
399 | } | |
400 | ||
feaa7bba SW |
401 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
402 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
b3b94faa DT |
403 | LM_FLAG_NOEXP | GL_EXACT, |
404 | &sdp->sd_jinode_gh); | |
405 | if (error) { | |
406 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
407 | error); | |
408 | goto fail_journal_gh; | |
409 | } | |
410 | ||
411 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
412 | if (error) { | |
413 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
414 | sdp->sd_jdesc->jd_jid, error); | |
415 | goto fail_jinode_gh; | |
416 | } | |
417 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
418 | } | |
419 | ||
420 | if (sdp->sd_lockstruct.ls_first) { | |
421 | unsigned int x; | |
422 | for (x = 0; x < sdp->sd_journals; x++) { | |
c63e31c2 | 423 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
424 | if (error) { |
425 | fs_err(sdp, "error recovering journal %u: %d\n", | |
426 | x, error); | |
427 | goto fail_jinode_gh; | |
428 | } | |
429 | } | |
430 | ||
431 | gfs2_lm_others_may_mount(sdp); | |
432 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 433 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
434 | if (error) { |
435 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
436 | goto fail_jinode_gh; | |
437 | } | |
438 | } | |
439 | ||
440 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
441 | gfs2_glock_dq_uninit(&ji_gh); | |
442 | jindex = 0; | |
443 | ||
b3b94faa DT |
444 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
445 | error = IS_ERR(p); | |
446 | if (error) { | |
447 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
448 | goto fail_jinode_gh; | |
449 | } | |
450 | sdp->sd_recoverd_process = p; | |
451 | ||
452 | return 0; | |
453 | ||
454 | fail_recoverd: | |
455 | kthread_stop(sdp->sd_recoverd_process); | |
456 | ||
457 | fail_jinode_gh: | |
458 | if (!sdp->sd_args.ar_spectator) | |
459 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
460 | ||
461 | fail_journal_gh: | |
462 | if (!sdp->sd_args.ar_spectator) | |
463 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
464 | ||
465 | fail_jindex: | |
466 | gfs2_jindex_free(sdp); | |
467 | if (jindex) | |
468 | gfs2_glock_dq_uninit(&ji_gh); | |
469 | ||
470 | fail: | |
f42faf4f | 471 | iput(sdp->sd_jindex); |
b3b94faa DT |
472 | |
473 | return error; | |
474 | } | |
475 | ||
b3b94faa DT |
476 | |
477 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
478 | { | |
b3b94faa | 479 | int error = 0; |
5c676f6d | 480 | struct gfs2_inode *ip; |
c9fd4307 | 481 | struct inode *inode; |
b3b94faa DT |
482 | |
483 | if (undo) | |
f42faf4f SW |
484 | goto fail_qinode; |
485 | ||
feaa7bba | 486 | inode = gfs2_lookup_root(sdp->sd_vfs, &sdp->sd_sb.sb_master_dir); |
c9fd4307 SW |
487 | if (IS_ERR(inode)) { |
488 | error = PTR_ERR(inode); | |
f42faf4f SW |
489 | fs_err(sdp, "can't read in master directory: %d\n", error); |
490 | goto fail; | |
491 | } | |
c9fd4307 | 492 | sdp->sd_master_dir = inode; |
f42faf4f SW |
493 | |
494 | error = init_journal(sdp, undo); | |
495 | if (error) | |
496 | goto fail_master; | |
b3b94faa DT |
497 | |
498 | /* Read in the master inode number inode */ | |
c752666c SW |
499 | sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum"); |
500 | if (IS_ERR(sdp->sd_inum_inode)) { | |
501 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 502 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 503 | goto fail_journal; |
b3b94faa DT |
504 | } |
505 | ||
f42faf4f | 506 | |
b3b94faa | 507 | /* Read in the master statfs inode */ |
c752666c SW |
508 | sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs"); |
509 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
510 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 511 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 512 | goto fail_inum; |
b3b94faa DT |
513 | } |
514 | ||
515 | /* Read in the resource index inode */ | |
c752666c SW |
516 | sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex"); |
517 | if (IS_ERR(sdp->sd_rindex)) { | |
518 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
519 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
520 | goto fail_statfs; | |
521 | } | |
feaa7bba | 522 | ip = GFS2_I(sdp->sd_rindex); |
5c676f6d SW |
523 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
524 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
525 | |
526 | /* Read in the quota inode */ | |
c752666c SW |
527 | sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota"); |
528 | if (IS_ERR(sdp->sd_quota_inode)) { | |
529 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
530 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
531 | goto fail_rindex; | |
532 | } | |
b3b94faa DT |
533 | return 0; |
534 | ||
f42faf4f SW |
535 | fail_qinode: |
536 | iput(sdp->sd_quota_inode); | |
b3b94faa | 537 | |
f42faf4f | 538 | fail_rindex: |
b3b94faa | 539 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 540 | iput(sdp->sd_rindex); |
b3b94faa | 541 | |
f42faf4f SW |
542 | fail_statfs: |
543 | iput(sdp->sd_statfs_inode); | |
b3b94faa | 544 | |
f42faf4f SW |
545 | fail_inum: |
546 | iput(sdp->sd_inum_inode); | |
547 | fail_journal: | |
548 | init_journal(sdp, UNDO); | |
549 | fail_master: | |
550 | iput(sdp->sd_master_dir); | |
551 | fail: | |
b3b94faa DT |
552 | return error; |
553 | } | |
554 | ||
555 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
556 | { | |
f42faf4f | 557 | struct inode *pn = NULL; |
b3b94faa DT |
558 | char buf[30]; |
559 | int error = 0; | |
5c676f6d | 560 | struct gfs2_inode *ip; |
b3b94faa DT |
561 | |
562 | if (sdp->sd_args.ar_spectator) | |
563 | return 0; | |
564 | ||
565 | if (undo) | |
566 | goto fail_qc_gh; | |
567 | ||
c752666c SW |
568 | pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node"); |
569 | if (IS_ERR(pn)) { | |
570 | error = PTR_ERR(pn); | |
b3b94faa DT |
571 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
572 | return error; | |
573 | } | |
574 | ||
575 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
576 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
577 | if (IS_ERR(sdp->sd_ir_inode)) { | |
578 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
579 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
580 | goto fail; | |
581 | } | |
582 | ||
583 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
584 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
585 | if (IS_ERR(sdp->sd_sc_inode)) { | |
586 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
587 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
588 | goto fail_ir_i; | |
589 | } | |
590 | ||
b3b94faa | 591 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
592 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
593 | if (IS_ERR(sdp->sd_qc_inode)) { | |
594 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
595 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
596 | goto fail_ut_i; | |
597 | } | |
598 | ||
f42faf4f | 599 | iput(pn); |
b3b94faa DT |
600 | pn = NULL; |
601 | ||
feaa7bba | 602 | ip = GFS2_I(sdp->sd_ir_inode); |
5c676f6d | 603 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 604 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
605 | &sdp->sd_ir_gh); |
606 | if (error) { | |
607 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
608 | goto fail_qc_i; | |
609 | } | |
610 | ||
feaa7bba | 611 | ip = GFS2_I(sdp->sd_sc_inode); |
5c676f6d | 612 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 613 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
614 | &sdp->sd_sc_gh); |
615 | if (error) { | |
616 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
617 | goto fail_ir_gh; | |
618 | } | |
619 | ||
feaa7bba | 620 | ip = GFS2_I(sdp->sd_qc_inode); |
5c676f6d | 621 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 622 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
623 | &sdp->sd_qc_gh); |
624 | if (error) { | |
625 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
626 | goto fail_ut_gh; | |
627 | } | |
628 | ||
629 | return 0; | |
630 | ||
631 | fail_qc_gh: | |
632 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
633 | ||
634 | fail_ut_gh: | |
b3b94faa | 635 | |
b3b94faa DT |
636 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
637 | ||
638 | fail_ir_gh: | |
639 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); | |
640 | ||
641 | fail_qc_i: | |
f42faf4f | 642 | iput(sdp->sd_qc_inode); |
b3b94faa DT |
643 | |
644 | fail_ut_i: | |
b3b94faa | 645 | |
f42faf4f | 646 | iput(sdp->sd_sc_inode); |
b3b94faa DT |
647 | |
648 | fail_ir_i: | |
f42faf4f | 649 | iput(sdp->sd_ir_inode); |
b3b94faa DT |
650 | |
651 | fail: | |
652 | if (pn) | |
f42faf4f | 653 | iput(pn); |
b3b94faa DT |
654 | return error; |
655 | } | |
656 | ||
657 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
658 | { | |
659 | struct task_struct *p; | |
660 | int error = 0; | |
661 | ||
662 | if (undo) | |
feaa7bba | 663 | goto fail_quotad; |
b3b94faa DT |
664 | |
665 | sdp->sd_log_flush_time = jiffies; | |
666 | sdp->sd_jindex_refresh_time = jiffies; | |
667 | ||
668 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
669 | error = IS_ERR(p); | |
670 | if (error) { | |
671 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
672 | return error; | |
673 | } | |
674 | sdp->sd_logd_process = p; | |
675 | ||
676 | sdp->sd_statfs_sync_time = jiffies; | |
677 | sdp->sd_quota_sync_time = jiffies; | |
678 | ||
679 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
680 | error = IS_ERR(p); | |
681 | if (error) { | |
682 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
683 | goto fail; | |
684 | } | |
685 | sdp->sd_quotad_process = p; | |
686 | ||
b3b94faa DT |
687 | return 0; |
688 | ||
b3b94faa | 689 | |
feaa7bba | 690 | fail_quotad: |
b3b94faa | 691 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 692 | fail: |
b3b94faa | 693 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
694 | return error; |
695 | } | |
696 | ||
697 | /** | |
698 | * fill_super - Read in superblock | |
699 | * @sb: The VFS superblock | |
700 | * @data: Mount options | |
701 | * @silent: Don't complain if it's not a GFS2 filesystem | |
702 | * | |
703 | * Returns: errno | |
704 | */ | |
705 | ||
706 | static int fill_super(struct super_block *sb, void *data, int silent) | |
707 | { | |
708 | struct gfs2_sbd *sdp; | |
709 | struct gfs2_holder mount_gh; | |
710 | int error; | |
711 | ||
712 | sdp = init_sbd(sb); | |
713 | if (!sdp) { | |
d92a8d48 | 714 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
715 | return -ENOMEM; |
716 | } | |
717 | ||
718 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
719 | if (error) { | |
d92a8d48 | 720 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
721 | goto fail; |
722 | } | |
723 | ||
419c93e0 SW |
724 | init_vfs(sb, SDF_NOATIME); |
725 | ||
726 | /* Set up the buffer cache and fill in some fake block size values | |
727 | to allow us to read-in the on-disk superblock. */ | |
728 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
729 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
730 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
731 | GFS2_BASIC_BLOCK_SHIFT; | |
732 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
733 | |
734 | error = init_names(sdp, silent); | |
735 | if (error) | |
736 | goto fail; | |
737 | ||
738 | error = gfs2_sys_fs_add(sdp); | |
739 | if (error) | |
740 | goto fail; | |
741 | ||
742 | error = gfs2_lm_mount(sdp, silent); | |
743 | if (error) | |
744 | goto fail_sys; | |
745 | ||
746 | error = init_locking(sdp, &mount_gh, DO); | |
747 | if (error) | |
748 | goto fail_lm; | |
749 | ||
750 | error = init_sb(sdp, silent, DO); | |
751 | if (error) | |
752 | goto fail_locking; | |
b3b94faa DT |
753 | |
754 | error = init_inodes(sdp, DO); | |
755 | if (error) | |
f42faf4f | 756 | goto fail_sb; |
b3b94faa DT |
757 | |
758 | error = init_per_node(sdp, DO); | |
759 | if (error) | |
760 | goto fail_inodes; | |
761 | ||
762 | error = gfs2_statfs_init(sdp); | |
763 | if (error) { | |
764 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
765 | goto fail_per_node; | |
766 | } | |
767 | ||
768 | error = init_threads(sdp, DO); | |
769 | if (error) | |
770 | goto fail_per_node; | |
771 | ||
772 | if (!(sb->s_flags & MS_RDONLY)) { | |
773 | error = gfs2_make_fs_rw(sdp); | |
774 | if (error) { | |
775 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
776 | goto fail_threads; | |
777 | } | |
778 | } | |
779 | ||
780 | gfs2_glock_dq_uninit(&mount_gh); | |
781 | ||
782 | return 0; | |
783 | ||
784 | fail_threads: | |
785 | init_threads(sdp, UNDO); | |
786 | ||
787 | fail_per_node: | |
788 | init_per_node(sdp, UNDO); | |
789 | ||
790 | fail_inodes: | |
791 | init_inodes(sdp, UNDO); | |
792 | ||
b3b94faa DT |
793 | fail_sb: |
794 | init_sb(sdp, 0, UNDO); | |
795 | ||
796 | fail_locking: | |
797 | init_locking(sdp, &mount_gh, UNDO); | |
798 | ||
799 | fail_lm: | |
800 | gfs2_gl_hash_clear(sdp, WAIT); | |
801 | gfs2_lm_unmount(sdp); | |
802 | while (invalidate_inodes(sb)) | |
803 | yield(); | |
804 | ||
805 | fail_sys: | |
806 | gfs2_sys_fs_del(sdp); | |
807 | ||
808 | fail: | |
809 | vfree(sdp); | |
5c676f6d | 810 | sb->s_fs_info = NULL; |
b3b94faa DT |
811 | |
812 | return error; | |
813 | } | |
814 | ||
ccd6efd0 AM |
815 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
816 | const char *dev_name, void *data, struct vfsmount *mnt) | |
b3b94faa | 817 | { |
86384605 AD |
818 | struct super_block *sb; |
819 | struct gfs2_sbd *sdp; | |
820 | int error = get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt); | |
821 | if (error) | |
822 | goto out; | |
823 | sb = mnt->mnt_sb; | |
824 | sdp = (struct gfs2_sbd*)sb->s_fs_info; | |
825 | sdp->sd_gfs2mnt = mnt; | |
826 | out: | |
827 | return error; | |
828 | } | |
829 | ||
830 | static int fill_super_meta(struct super_block *sb, struct super_block *new, | |
831 | void *data, int silent) | |
832 | { | |
833 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
834 | struct inode *inode; | |
835 | int error = 0; | |
836 | ||
837 | new->s_fs_info = sdp; | |
838 | sdp->sd_vfs_meta = sb; | |
839 | ||
840 | init_vfs(new, SDF_NOATIME); | |
841 | ||
842 | /* Get the master inode */ | |
843 | inode = igrab(sdp->sd_master_dir); | |
844 | ||
845 | new->s_root = d_alloc_root(inode); | |
846 | if (!new->s_root) { | |
847 | fs_err(sdp, "can't get root dentry\n"); | |
848 | error = -ENOMEM; | |
849 | iput(inode); | |
850 | } | |
851 | new->s_root->d_op = &gfs2_dops; | |
852 | ||
853 | return error; | |
854 | } | |
855 | static int set_bdev_super(struct super_block *s, void *data) | |
856 | { | |
857 | s->s_bdev = data; | |
858 | s->s_dev = s->s_bdev->bd_dev; | |
859 | return 0; | |
860 | } | |
861 | ||
862 | static int test_bdev_super(struct super_block *s, void *data) | |
863 | { | |
864 | return (void *)s->s_bdev == data; | |
865 | } | |
866 | ||
867 | static struct super_block* get_gfs2_sb(const char *dev_name) | |
868 | { | |
869 | struct kstat stat; | |
870 | struct nameidata nd; | |
871 | struct file_system_type *fstype; | |
872 | struct super_block *sb = NULL, *s; | |
873 | struct list_head *l; | |
874 | int error; | |
875 | ||
876 | error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd); | |
877 | if (error) { | |
878 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error\n", | |
879 | dev_name); | |
880 | goto out; | |
881 | } | |
882 | error = vfs_getattr(nd.mnt, nd.dentry, &stat); | |
883 | ||
884 | fstype = get_fs_type("gfs2"); | |
885 | list_for_each(l, &fstype->fs_supers) { | |
886 | s = list_entry(l, struct super_block, s_instances); | |
887 | if ((S_ISBLK(stat.mode) && s->s_dev == stat.rdev) || | |
888 | (S_ISDIR(stat.mode) && s == nd.dentry->d_inode->i_sb)) { | |
889 | sb = s; | |
890 | goto free_nd; | |
891 | } | |
892 | } | |
893 | ||
894 | printk(KERN_WARNING "GFS2: Unrecognized block device or " | |
895 | "mount point %s", dev_name); | |
896 | ||
897 | free_nd: | |
898 | path_release(&nd); | |
899 | out: | |
900 | return sb; | |
901 | } | |
902 | ||
903 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, | |
904 | const char *dev_name, void *data, struct vfsmount *mnt) | |
905 | { | |
906 | int error = 0; | |
907 | struct super_block *sb = NULL, *new; | |
908 | struct gfs2_sbd *sdp; | |
909 | char *gfs2mnt = NULL; | |
910 | ||
911 | sb = get_gfs2_sb(dev_name); | |
912 | if (!sb) { | |
913 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); | |
914 | error = -ENOENT; | |
915 | goto error; | |
916 | } | |
917 | sdp = (struct gfs2_sbd*) sb->s_fs_info; | |
918 | if (sdp->sd_vfs_meta) { | |
919 | printk(KERN_WARNING "GFS2: gfs2meta mount already exists\n"); | |
920 | error = -EBUSY; | |
921 | goto error; | |
922 | } | |
923 | mutex_lock(&sb->s_bdev->bd_mount_mutex); | |
924 | new = sget(fs_type, test_bdev_super, set_bdev_super, sb->s_bdev); | |
925 | mutex_unlock(&sb->s_bdev->bd_mount_mutex); | |
926 | if (IS_ERR(new)) { | |
927 | error = PTR_ERR(new); | |
928 | goto error; | |
929 | } | |
930 | module_put(fs_type->owner); | |
931 | new->s_flags = flags; | |
932 | strlcpy(new->s_id, sb->s_id, sizeof(new->s_id)); | |
933 | sb_set_blocksize(new, sb->s_blocksize); | |
934 | error = fill_super_meta(sb, new, data, flags & MS_SILENT ? 1 : 0); | |
935 | if (error) { | |
936 | up_write(&new->s_umount); | |
937 | deactivate_super(new); | |
938 | goto error; | |
939 | } | |
940 | ||
941 | new->s_flags |= MS_ACTIVE; | |
942 | ||
943 | /* Grab a reference to the gfs2 mount point */ | |
944 | atomic_inc(&sdp->sd_gfs2mnt->mnt_count); | |
945 | return simple_set_mnt(mnt, new); | |
946 | error: | |
947 | if (gfs2mnt) | |
948 | kfree(gfs2mnt); | |
949 | return error; | |
b3b94faa DT |
950 | } |
951 | ||
419c93e0 SW |
952 | static void gfs2_kill_sb(struct super_block *sb) |
953 | { | |
954 | kill_block_super(sb); | |
955 | } | |
956 | ||
86384605 AD |
957 | static void gfs2_kill_sb_meta(struct super_block *sb) |
958 | { | |
959 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
960 | generic_shutdown_super(sb); | |
961 | sdp->sd_vfs_meta = NULL; | |
962 | atomic_dec(&sdp->sd_gfs2mnt->mnt_count); | |
963 | } | |
964 | ||
b3b94faa DT |
965 | struct file_system_type gfs2_fs_type = { |
966 | .name = "gfs2", | |
967 | .fs_flags = FS_REQUIRES_DEV, | |
968 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
969 | .kill_sb = gfs2_kill_sb, |
970 | .owner = THIS_MODULE, | |
971 | }; | |
972 | ||
973 | struct file_system_type gfs2meta_fs_type = { | |
974 | .name = "gfs2meta", | |
975 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 AD |
976 | .get_sb = gfs2_get_sb_meta, |
977 | .kill_sb = gfs2_kill_sb_meta, | |
b3b94faa DT |
978 | .owner = THIS_MODULE, |
979 | }; | |
980 |