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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> | |
b3b94faa DT |
15 | #include <linux/blkdev.h> |
16 | #include <linux/kthread.h> | |
86384605 AD |
17 | #include <linux/namei.h> |
18 | #include <linux/mount.h> | |
5c676f6d | 19 | #include <linux/gfs2_ondisk.h> |
7d308590 | 20 | #include <linux/lm_interface.h> |
b3b94faa DT |
21 | |
22 | #include "gfs2.h" | |
5c676f6d | 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" | |
b3b94faa | 36 | #include "sys.h" |
5c676f6d | 37 | #include "util.h" |
b3b94faa DT |
38 | |
39 | #define DO 0 | |
40 | #define UNDO 1 | |
41 | ||
5bb76af1 RP |
42 | extern struct dentry_operations gfs2_dops; |
43 | ||
b3b94faa DT |
44 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
45 | { | |
46 | struct gfs2_sbd *sdp; | |
b3b94faa | 47 | |
85d1da67 | 48 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
49 | if (!sdp) |
50 | return NULL; | |
51 | ||
5c676f6d | 52 | sb->s_fs_info = sdp; |
b3b94faa DT |
53 | sdp->sd_vfs = sb; |
54 | ||
55 | gfs2_tune_init(&sdp->sd_tune); | |
56 | ||
b3b94faa DT |
57 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); |
58 | spin_lock_init(&sdp->sd_reclaim_lock); | |
59 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
b3b94faa | 60 | |
f55ab26a | 61 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 62 | spin_lock_init(&sdp->sd_statfs_spin); |
f55ab26a | 63 | mutex_init(&sdp->sd_statfs_mutex); |
b3b94faa DT |
64 | |
65 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 66 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
67 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
68 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
69 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
70 | ||
71 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
72 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 73 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 74 | |
b3b94faa DT |
75 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
76 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 77 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
78 | |
79 | spin_lock_init(&sdp->sd_log_lock); | |
b3b94faa DT |
80 | |
81 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); | |
82 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); | |
83 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
84 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
85 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
86 | ||
71b86f56 | 87 | mutex_init(&sdp->sd_log_reserve_mutex); |
b3b94faa DT |
88 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
89 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
90 | ||
484adff8 | 91 | init_rwsem(&sdp->sd_log_flush_lock); |
b3b94faa DT |
92 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
93 | ||
94 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
95 | ||
f55ab26a | 96 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
97 | |
98 | return sdp; | |
99 | } | |
100 | ||
419c93e0 | 101 | static void init_vfs(struct super_block *sb, unsigned noatime) |
b3b94faa | 102 | { |
419c93e0 | 103 | struct gfs2_sbd *sdp = sb->s_fs_info; |
b3b94faa DT |
104 | |
105 | sb->s_magic = GFS2_MAGIC; | |
106 | sb->s_op = &gfs2_super_ops; | |
107 | sb->s_export_op = &gfs2_export_ops; | |
108 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
109 | ||
110 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
419c93e0 | 111 | set_bit(noatime, &sdp->sd_flags); |
b3b94faa DT |
112 | |
113 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
114 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
b3b94faa DT |
115 | } |
116 | ||
117 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
118 | { | |
3cf1e7be | 119 | struct page *page; |
b3b94faa DT |
120 | char *proto, *table; |
121 | int error = 0; | |
122 | ||
123 | proto = sdp->sd_args.ar_lockproto; | |
124 | table = sdp->sd_args.ar_locktable; | |
125 | ||
126 | /* Try to autodetect */ | |
127 | ||
128 | if (!proto[0] || !table[0]) { | |
3cf1e7be SW |
129 | struct gfs2_sb *sb; |
130 | page = gfs2_read_super(sdp->sd_vfs, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); | |
131 | if (!page) | |
132 | return -ENOBUFS; | |
133 | sb = kmap(page); | |
134 | gfs2_sb_in(&sdp->sd_sb, sb); | |
135 | kunmap(page); | |
136 | __free_page(page); | |
137 | ||
138 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
b3b94faa DT |
139 | if (error) |
140 | goto out; | |
141 | ||
142 | if (!proto[0]) | |
3cf1e7be | 143 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 144 | if (!table[0]) |
3cf1e7be | 145 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
146 | } |
147 | ||
148 | if (!table[0]) | |
149 | table = sdp->sd_vfs->s_id; | |
150 | ||
151 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
152 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
153 | ||
a91ea69f | 154 | out: |
b3b94faa DT |
155 | return error; |
156 | } | |
157 | ||
158 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
159 | int undo) | |
160 | { | |
161 | struct task_struct *p; | |
162 | int error = 0; | |
163 | ||
164 | if (undo) | |
165 | goto fail_trans; | |
166 | ||
167 | p = kthread_run(gfs2_scand, sdp, "gfs2_scand"); | |
168 | error = IS_ERR(p); | |
169 | if (error) { | |
170 | fs_err(sdp, "can't start scand thread: %d\n", error); | |
171 | return error; | |
172 | } | |
173 | sdp->sd_scand_process = p; | |
174 | ||
175 | for (sdp->sd_glockd_num = 0; | |
176 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
177 | sdp->sd_glockd_num++) { | |
178 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
179 | error = IS_ERR(p); | |
180 | if (error) { | |
181 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
182 | goto fail; | |
183 | } | |
184 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
185 | } | |
186 | ||
187 | error = gfs2_glock_nq_num(sdp, | |
188 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
189 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
190 | mount_gh); | |
191 | if (error) { | |
192 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
193 | goto fail; | |
194 | } | |
195 | ||
196 | error = gfs2_glock_nq_num(sdp, | |
197 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
198 | LM_ST_SHARED, | |
579b78a4 | 199 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
200 | &sdp->sd_live_gh); |
201 | if (error) { | |
202 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
203 | goto fail_mount; | |
204 | } | |
205 | ||
206 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
207 | CREATE, &sdp->sd_rename_gl); | |
208 | if (error) { | |
209 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
210 | goto fail_live; | |
211 | } | |
212 | ||
213 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
214 | CREATE, &sdp->sd_trans_gl); | |
215 | if (error) { | |
216 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
217 | goto fail_rename; | |
218 | } | |
219 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
220 | ||
221 | return 0; | |
222 | ||
feaa7bba | 223 | fail_trans: |
b3b94faa | 224 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 225 | fail_rename: |
b3b94faa | 226 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 227 | fail_live: |
b3b94faa | 228 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 229 | fail_mount: |
b3b94faa | 230 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 231 | fail: |
b3b94faa DT |
232 | while (sdp->sd_glockd_num--) |
233 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
234 | ||
235 | kthread_stop(sdp->sd_scand_process); | |
b3b94faa DT |
236 | return error; |
237 | } | |
238 | ||
feaa7bba | 239 | static struct inode *gfs2_lookup_root(struct super_block *sb, |
629a21e7 | 240 | struct gfs2_inum_host *inum) |
f42faf4f | 241 | { |
feaa7bba | 242 | return gfs2_inode_lookup(sb, inum, DT_DIR); |
f42faf4f SW |
243 | } |
244 | ||
b3b94faa DT |
245 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
246 | { | |
247 | struct super_block *sb = sdp->sd_vfs; | |
248 | struct gfs2_holder sb_gh; | |
629a21e7 | 249 | struct gfs2_inum_host *inum; |
f42faf4f | 250 | struct inode *inode; |
b3b94faa DT |
251 | int error = 0; |
252 | ||
253 | if (undo) { | |
88721877 RC |
254 | if (sb->s_root) { |
255 | dput(sb->s_root); | |
256 | sb->s_root = NULL; | |
257 | } | |
b3b94faa DT |
258 | return 0; |
259 | } | |
907b9bce | 260 | |
feaa7bba | 261 | error = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
b3b94faa DT |
262 | LM_ST_SHARED, 0, &sb_gh); |
263 | if (error) { | |
264 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
265 | return error; | |
266 | } | |
267 | ||
268 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
269 | if (error) { | |
270 | fs_err(sdp, "can't read superblock: %d\n", error); | |
271 | goto out; | |
272 | } | |
273 | ||
274 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 275 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 276 | error = -EINVAL; |
b3b94faa DT |
277 | fs_err(sdp, "FS block size (%u) is too small for device " |
278 | "block size (%u)\n", | |
279 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
280 | goto out; | |
281 | } | |
282 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 283 | error = -EINVAL; |
b3b94faa DT |
284 | fs_err(sdp, "FS block size (%u) is too big for machine " |
285 | "page size (%u)\n", | |
286 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
287 | goto out; | |
288 | } | |
b3b94faa DT |
289 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
290 | ||
f42faf4f | 291 | /* Get the root inode */ |
419c93e0 SW |
292 | inum = &sdp->sd_sb.sb_root_dir; |
293 | if (sb->s_type == &gfs2meta_fs_type) | |
294 | inum = &sdp->sd_sb.sb_master_dir; | |
feaa7bba | 295 | inode = gfs2_lookup_root(sb, inum); |
c9fd4307 SW |
296 | if (IS_ERR(inode)) { |
297 | error = PTR_ERR(inode); | |
f42faf4f SW |
298 | fs_err(sdp, "can't read in root inode: %d\n", error); |
299 | goto out; | |
300 | } | |
b3b94faa | 301 | |
f42faf4f SW |
302 | sb->s_root = d_alloc_root(inode); |
303 | if (!sb->s_root) { | |
304 | fs_err(sdp, "can't get root dentry\n"); | |
305 | error = -ENOMEM; | |
c9fd4307 | 306 | iput(inode); |
f42faf4f | 307 | } |
5bb76af1 | 308 | sb->s_root->d_op = &gfs2_dops; |
f42faf4f | 309 | out: |
b3b94faa | 310 | gfs2_glock_dq_uninit(&sb_gh); |
b3b94faa DT |
311 | return error; |
312 | } | |
313 | ||
314 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
315 | { | |
316 | struct gfs2_holder ji_gh; | |
317 | struct task_struct *p; | |
5c676f6d | 318 | struct gfs2_inode *ip; |
b3b94faa DT |
319 | int jindex = 1; |
320 | int error = 0; | |
321 | ||
322 | if (undo) { | |
323 | jindex = 0; | |
324 | goto fail_recoverd; | |
325 | } | |
326 | ||
c752666c SW |
327 | sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex"); |
328 | if (IS_ERR(sdp->sd_jindex)) { | |
b3b94faa | 329 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 330 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 331 | } |
feaa7bba | 332 | ip = GFS2_I(sdp->sd_jindex); |
5c676f6d | 333 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
b3b94faa DT |
334 | |
335 | /* Load in the journal index special file */ | |
336 | ||
337 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
338 | if (error) { | |
339 | fs_err(sdp, "can't read journal index: %d\n", error); | |
340 | goto fail; | |
341 | } | |
342 | ||
343 | error = -EINVAL; | |
344 | if (!gfs2_jindex_size(sdp)) { | |
345 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 346 | goto fail_jindex; |
b3b94faa DT |
347 | } |
348 | ||
349 | if (sdp->sd_args.ar_spectator) { | |
350 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
351 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
352 | } else { | |
353 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
354 | fs_err(sdp, "can't mount journal #%u\n", | |
355 | sdp->sd_lockstruct.ls_jid); | |
356 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
357 | gfs2_jindex_size(sdp), | |
358 | gfs2_jindex_size(sdp) - 1); | |
359 | goto fail_jindex; | |
360 | } | |
361 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
362 | ||
feaa7bba | 363 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
364 | &gfs2_journal_glops, |
365 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
366 | &sdp->sd_journal_gh); | |
367 | if (error) { | |
368 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
369 | goto fail_jindex; | |
370 | } | |
371 | ||
feaa7bba SW |
372 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
373 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
b3b94faa DT |
374 | LM_FLAG_NOEXP | GL_EXACT, |
375 | &sdp->sd_jinode_gh); | |
376 | if (error) { | |
377 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
378 | error); | |
379 | goto fail_journal_gh; | |
380 | } | |
381 | ||
382 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
383 | if (error) { | |
384 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
385 | sdp->sd_jdesc->jd_jid, error); | |
386 | goto fail_jinode_gh; | |
387 | } | |
388 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
389 | } | |
390 | ||
391 | if (sdp->sd_lockstruct.ls_first) { | |
392 | unsigned int x; | |
393 | for (x = 0; x < sdp->sd_journals; x++) { | |
c63e31c2 | 394 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
395 | if (error) { |
396 | fs_err(sdp, "error recovering journal %u: %d\n", | |
397 | x, error); | |
398 | goto fail_jinode_gh; | |
399 | } | |
400 | } | |
401 | ||
402 | gfs2_lm_others_may_mount(sdp); | |
403 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 404 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
405 | if (error) { |
406 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
407 | goto fail_jinode_gh; | |
408 | } | |
409 | } | |
410 | ||
411 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
412 | gfs2_glock_dq_uninit(&ji_gh); | |
413 | jindex = 0; | |
414 | ||
b3b94faa DT |
415 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
416 | error = IS_ERR(p); | |
417 | if (error) { | |
418 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
419 | goto fail_jinode_gh; | |
420 | } | |
421 | sdp->sd_recoverd_process = p; | |
422 | ||
423 | return 0; | |
424 | ||
a91ea69f | 425 | fail_recoverd: |
b3b94faa | 426 | kthread_stop(sdp->sd_recoverd_process); |
a91ea69f | 427 | fail_jinode_gh: |
b3b94faa DT |
428 | if (!sdp->sd_args.ar_spectator) |
429 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 430 | fail_journal_gh: |
b3b94faa DT |
431 | if (!sdp->sd_args.ar_spectator) |
432 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 433 | fail_jindex: |
b3b94faa DT |
434 | gfs2_jindex_free(sdp); |
435 | if (jindex) | |
436 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 437 | fail: |
f42faf4f | 438 | iput(sdp->sd_jindex); |
b3b94faa DT |
439 | return error; |
440 | } | |
441 | ||
b3b94faa DT |
442 | |
443 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
444 | { | |
b3b94faa | 445 | int error = 0; |
5c676f6d | 446 | struct gfs2_inode *ip; |
c9fd4307 | 447 | struct inode *inode; |
b3b94faa DT |
448 | |
449 | if (undo) | |
f42faf4f SW |
450 | goto fail_qinode; |
451 | ||
feaa7bba | 452 | inode = gfs2_lookup_root(sdp->sd_vfs, &sdp->sd_sb.sb_master_dir); |
c9fd4307 SW |
453 | if (IS_ERR(inode)) { |
454 | error = PTR_ERR(inode); | |
f42faf4f SW |
455 | fs_err(sdp, "can't read in master directory: %d\n", error); |
456 | goto fail; | |
457 | } | |
c9fd4307 | 458 | sdp->sd_master_dir = inode; |
f42faf4f SW |
459 | |
460 | error = init_journal(sdp, undo); | |
461 | if (error) | |
462 | goto fail_master; | |
b3b94faa DT |
463 | |
464 | /* Read in the master inode number inode */ | |
c752666c SW |
465 | sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum"); |
466 | if (IS_ERR(sdp->sd_inum_inode)) { | |
467 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 468 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 469 | goto fail_journal; |
b3b94faa DT |
470 | } |
471 | ||
f42faf4f | 472 | |
b3b94faa | 473 | /* Read in the master statfs inode */ |
c752666c SW |
474 | sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs"); |
475 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
476 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 477 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 478 | goto fail_inum; |
b3b94faa DT |
479 | } |
480 | ||
481 | /* Read in the resource index inode */ | |
c752666c SW |
482 | sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex"); |
483 | if (IS_ERR(sdp->sd_rindex)) { | |
484 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
485 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
486 | goto fail_statfs; | |
487 | } | |
feaa7bba | 488 | ip = GFS2_I(sdp->sd_rindex); |
5c676f6d SW |
489 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
490 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
491 | |
492 | /* Read in the quota inode */ | |
c752666c SW |
493 | sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota"); |
494 | if (IS_ERR(sdp->sd_quota_inode)) { | |
495 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
496 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
497 | goto fail_rindex; | |
498 | } | |
b3b94faa DT |
499 | return 0; |
500 | ||
f42faf4f SW |
501 | fail_qinode: |
502 | iput(sdp->sd_quota_inode); | |
f42faf4f | 503 | fail_rindex: |
b3b94faa | 504 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 505 | iput(sdp->sd_rindex); |
f42faf4f SW |
506 | fail_statfs: |
507 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
508 | fail_inum: |
509 | iput(sdp->sd_inum_inode); | |
510 | fail_journal: | |
511 | init_journal(sdp, UNDO); | |
512 | fail_master: | |
513 | iput(sdp->sd_master_dir); | |
514 | fail: | |
b3b94faa DT |
515 | return error; |
516 | } | |
517 | ||
518 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
519 | { | |
f42faf4f | 520 | struct inode *pn = NULL; |
b3b94faa DT |
521 | char buf[30]; |
522 | int error = 0; | |
5c676f6d | 523 | struct gfs2_inode *ip; |
b3b94faa DT |
524 | |
525 | if (sdp->sd_args.ar_spectator) | |
526 | return 0; | |
527 | ||
528 | if (undo) | |
529 | goto fail_qc_gh; | |
530 | ||
c752666c SW |
531 | pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node"); |
532 | if (IS_ERR(pn)) { | |
533 | error = PTR_ERR(pn); | |
b3b94faa DT |
534 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
535 | return error; | |
536 | } | |
537 | ||
538 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
539 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
540 | if (IS_ERR(sdp->sd_ir_inode)) { | |
541 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
542 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
543 | goto fail; | |
544 | } | |
545 | ||
546 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
547 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
548 | if (IS_ERR(sdp->sd_sc_inode)) { | |
549 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
550 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
551 | goto fail_ir_i; | |
552 | } | |
553 | ||
b3b94faa | 554 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
555 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
556 | if (IS_ERR(sdp->sd_qc_inode)) { | |
557 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
558 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
559 | goto fail_ut_i; | |
560 | } | |
561 | ||
f42faf4f | 562 | iput(pn); |
b3b94faa DT |
563 | pn = NULL; |
564 | ||
feaa7bba | 565 | ip = GFS2_I(sdp->sd_ir_inode); |
5c676f6d | 566 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 567 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
568 | &sdp->sd_ir_gh); |
569 | if (error) { | |
570 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
571 | goto fail_qc_i; | |
572 | } | |
573 | ||
feaa7bba | 574 | ip = GFS2_I(sdp->sd_sc_inode); |
5c676f6d | 575 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 576 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
577 | &sdp->sd_sc_gh); |
578 | if (error) { | |
579 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
580 | goto fail_ir_gh; | |
581 | } | |
582 | ||
feaa7bba | 583 | ip = GFS2_I(sdp->sd_qc_inode); |
5c676f6d | 584 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 585 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
586 | &sdp->sd_qc_gh); |
587 | if (error) { | |
588 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
589 | goto fail_ut_gh; | |
590 | } | |
591 | ||
592 | return 0; | |
593 | ||
a91ea69f | 594 | fail_qc_gh: |
b3b94faa | 595 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 596 | fail_ut_gh: |
b3b94faa | 597 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 598 | fail_ir_gh: |
b3b94faa | 599 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); |
a91ea69f | 600 | fail_qc_i: |
f42faf4f | 601 | iput(sdp->sd_qc_inode); |
a91ea69f | 602 | fail_ut_i: |
f42faf4f | 603 | iput(sdp->sd_sc_inode); |
a91ea69f | 604 | fail_ir_i: |
f42faf4f | 605 | iput(sdp->sd_ir_inode); |
a91ea69f | 606 | fail: |
b3b94faa | 607 | if (pn) |
f42faf4f | 608 | iput(pn); |
b3b94faa DT |
609 | return error; |
610 | } | |
611 | ||
612 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
613 | { | |
614 | struct task_struct *p; | |
615 | int error = 0; | |
616 | ||
617 | if (undo) | |
feaa7bba | 618 | goto fail_quotad; |
b3b94faa DT |
619 | |
620 | sdp->sd_log_flush_time = jiffies; | |
621 | sdp->sd_jindex_refresh_time = jiffies; | |
622 | ||
623 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
624 | error = IS_ERR(p); | |
625 | if (error) { | |
626 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
627 | return error; | |
628 | } | |
629 | sdp->sd_logd_process = p; | |
630 | ||
631 | sdp->sd_statfs_sync_time = jiffies; | |
632 | sdp->sd_quota_sync_time = jiffies; | |
633 | ||
634 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
635 | error = IS_ERR(p); | |
636 | if (error) { | |
637 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
638 | goto fail; | |
639 | } | |
640 | sdp->sd_quotad_process = p; | |
641 | ||
b3b94faa DT |
642 | return 0; |
643 | ||
b3b94faa | 644 | |
feaa7bba | 645 | fail_quotad: |
b3b94faa | 646 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 647 | fail: |
b3b94faa | 648 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
649 | return error; |
650 | } | |
651 | ||
652 | /** | |
653 | * fill_super - Read in superblock | |
654 | * @sb: The VFS superblock | |
655 | * @data: Mount options | |
656 | * @silent: Don't complain if it's not a GFS2 filesystem | |
657 | * | |
658 | * Returns: errno | |
659 | */ | |
660 | ||
661 | static int fill_super(struct super_block *sb, void *data, int silent) | |
662 | { | |
663 | struct gfs2_sbd *sdp; | |
664 | struct gfs2_holder mount_gh; | |
665 | int error; | |
666 | ||
667 | sdp = init_sbd(sb); | |
668 | if (!sdp) { | |
d92a8d48 | 669 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
670 | return -ENOMEM; |
671 | } | |
672 | ||
673 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
674 | if (error) { | |
d92a8d48 | 675 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
676 | goto fail; |
677 | } | |
678 | ||
419c93e0 SW |
679 | init_vfs(sb, SDF_NOATIME); |
680 | ||
681 | /* Set up the buffer cache and fill in some fake block size values | |
682 | to allow us to read-in the on-disk superblock. */ | |
683 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
684 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
685 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
686 | GFS2_BASIC_BLOCK_SHIFT; | |
687 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
688 | |
689 | error = init_names(sdp, silent); | |
690 | if (error) | |
691 | goto fail; | |
692 | ||
7c52b166 RP |
693 | gfs2_create_debugfs_file(sdp); |
694 | ||
b3b94faa DT |
695 | error = gfs2_sys_fs_add(sdp); |
696 | if (error) | |
697 | goto fail; | |
698 | ||
699 | error = gfs2_lm_mount(sdp, silent); | |
700 | if (error) | |
701 | goto fail_sys; | |
702 | ||
703 | error = init_locking(sdp, &mount_gh, DO); | |
704 | if (error) | |
705 | goto fail_lm; | |
706 | ||
707 | error = init_sb(sdp, silent, DO); | |
708 | if (error) | |
709 | goto fail_locking; | |
b3b94faa DT |
710 | |
711 | error = init_inodes(sdp, DO); | |
712 | if (error) | |
f42faf4f | 713 | goto fail_sb; |
b3b94faa DT |
714 | |
715 | error = init_per_node(sdp, DO); | |
716 | if (error) | |
717 | goto fail_inodes; | |
718 | ||
719 | error = gfs2_statfs_init(sdp); | |
720 | if (error) { | |
721 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
722 | goto fail_per_node; | |
723 | } | |
724 | ||
725 | error = init_threads(sdp, DO); | |
726 | if (error) | |
727 | goto fail_per_node; | |
728 | ||
729 | if (!(sb->s_flags & MS_RDONLY)) { | |
730 | error = gfs2_make_fs_rw(sdp); | |
731 | if (error) { | |
732 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
733 | goto fail_threads; | |
734 | } | |
735 | } | |
736 | ||
737 | gfs2_glock_dq_uninit(&mount_gh); | |
738 | ||
739 | return 0; | |
740 | ||
a91ea69f | 741 | fail_threads: |
b3b94faa | 742 | init_threads(sdp, UNDO); |
a91ea69f | 743 | fail_per_node: |
b3b94faa | 744 | init_per_node(sdp, UNDO); |
a91ea69f | 745 | fail_inodes: |
b3b94faa | 746 | init_inodes(sdp, UNDO); |
a91ea69f | 747 | fail_sb: |
b3b94faa | 748 | init_sb(sdp, 0, UNDO); |
a91ea69f | 749 | fail_locking: |
b3b94faa | 750 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 751 | fail_lm: |
b3b94faa DT |
752 | gfs2_gl_hash_clear(sdp, WAIT); |
753 | gfs2_lm_unmount(sdp); | |
754 | while (invalidate_inodes(sb)) | |
755 | yield(); | |
a91ea69f | 756 | fail_sys: |
b3b94faa | 757 | gfs2_sys_fs_del(sdp); |
a91ea69f | 758 | fail: |
a2c45807 | 759 | kfree(sdp); |
5c676f6d | 760 | sb->s_fs_info = NULL; |
b3b94faa DT |
761 | return error; |
762 | } | |
763 | ||
ccd6efd0 AM |
764 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
765 | const char *dev_name, void *data, struct vfsmount *mnt) | |
b3b94faa | 766 | { |
86384605 AD |
767 | struct super_block *sb; |
768 | struct gfs2_sbd *sdp; | |
769 | int error = get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt); | |
770 | if (error) | |
771 | goto out; | |
772 | sb = mnt->mnt_sb; | |
26c1a574 | 773 | sdp = sb->s_fs_info; |
86384605 AD |
774 | sdp->sd_gfs2mnt = mnt; |
775 | out: | |
776 | return error; | |
777 | } | |
778 | ||
907b9bce | 779 | static int fill_super_meta(struct super_block *sb, struct super_block *new, |
86384605 AD |
780 | void *data, int silent) |
781 | { | |
782 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
783 | struct inode *inode; | |
784 | int error = 0; | |
785 | ||
786 | new->s_fs_info = sdp; | |
787 | sdp->sd_vfs_meta = sb; | |
788 | ||
789 | init_vfs(new, SDF_NOATIME); | |
790 | ||
791 | /* Get the master inode */ | |
792 | inode = igrab(sdp->sd_master_dir); | |
793 | ||
794 | new->s_root = d_alloc_root(inode); | |
795 | if (!new->s_root) { | |
796 | fs_err(sdp, "can't get root dentry\n"); | |
797 | error = -ENOMEM; | |
798 | iput(inode); | |
bbbe4512 AB |
799 | } else |
800 | new->s_root->d_op = &gfs2_dops; | |
86384605 AD |
801 | |
802 | return error; | |
803 | } | |
a91ea69f | 804 | |
86384605 AD |
805 | static int set_bdev_super(struct super_block *s, void *data) |
806 | { | |
807 | s->s_bdev = data; | |
808 | s->s_dev = s->s_bdev->bd_dev; | |
809 | return 0; | |
810 | } | |
907b9bce | 811 | |
86384605 AD |
812 | static int test_bdev_super(struct super_block *s, void *data) |
813 | { | |
26c1a574 | 814 | return s->s_bdev == data; |
86384605 AD |
815 | } |
816 | ||
817 | static struct super_block* get_gfs2_sb(const char *dev_name) | |
818 | { | |
819 | struct kstat stat; | |
820 | struct nameidata nd; | |
821 | struct file_system_type *fstype; | |
822 | struct super_block *sb = NULL, *s; | |
823 | struct list_head *l; | |
824 | int error; | |
907b9bce | 825 | |
86384605 AD |
826 | error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd); |
827 | if (error) { | |
907b9bce | 828 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error\n", |
86384605 AD |
829 | dev_name); |
830 | goto out; | |
831 | } | |
832 | error = vfs_getattr(nd.mnt, nd.dentry, &stat); | |
833 | ||
834 | fstype = get_fs_type("gfs2"); | |
835 | list_for_each(l, &fstype->fs_supers) { | |
836 | s = list_entry(l, struct super_block, s_instances); | |
837 | if ((S_ISBLK(stat.mode) && s->s_dev == stat.rdev) || | |
838 | (S_ISDIR(stat.mode) && s == nd.dentry->d_inode->i_sb)) { | |
839 | sb = s; | |
840 | goto free_nd; | |
841 | } | |
842 | } | |
843 | ||
844 | printk(KERN_WARNING "GFS2: Unrecognized block device or " | |
d5a6751b | 845 | "mount point %s\n", dev_name); |
86384605 AD |
846 | |
847 | free_nd: | |
848 | path_release(&nd); | |
849 | out: | |
850 | return sb; | |
851 | } | |
852 | ||
853 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, | |
854 | const char *dev_name, void *data, struct vfsmount *mnt) | |
855 | { | |
856 | int error = 0; | |
857 | struct super_block *sb = NULL, *new; | |
858 | struct gfs2_sbd *sdp; | |
86384605 AD |
859 | |
860 | sb = get_gfs2_sb(dev_name); | |
861 | if (!sb) { | |
862 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); | |
863 | error = -ENOENT; | |
864 | goto error; | |
865 | } | |
866 | sdp = (struct gfs2_sbd*) sb->s_fs_info; | |
867 | if (sdp->sd_vfs_meta) { | |
868 | printk(KERN_WARNING "GFS2: gfs2meta mount already exists\n"); | |
869 | error = -EBUSY; | |
870 | goto error; | |
871 | } | |
f73ca1b7 | 872 | down(&sb->s_bdev->bd_mount_sem); |
86384605 | 873 | new = sget(fs_type, test_bdev_super, set_bdev_super, sb->s_bdev); |
f73ca1b7 | 874 | up(&sb->s_bdev->bd_mount_sem); |
86384605 AD |
875 | if (IS_ERR(new)) { |
876 | error = PTR_ERR(new); | |
877 | goto error; | |
878 | } | |
879 | module_put(fs_type->owner); | |
880 | new->s_flags = flags; | |
881 | strlcpy(new->s_id, sb->s_id, sizeof(new->s_id)); | |
882 | sb_set_blocksize(new, sb->s_blocksize); | |
883 | error = fill_super_meta(sb, new, data, flags & MS_SILENT ? 1 : 0); | |
884 | if (error) { | |
885 | up_write(&new->s_umount); | |
886 | deactivate_super(new); | |
887 | goto error; | |
888 | } | |
907b9bce | 889 | |
86384605 | 890 | new->s_flags |= MS_ACTIVE; |
907b9bce | 891 | |
86384605 AD |
892 | /* Grab a reference to the gfs2 mount point */ |
893 | atomic_inc(&sdp->sd_gfs2mnt->mnt_count); | |
894 | return simple_set_mnt(mnt, new); | |
895 | error: | |
86384605 | 896 | return error; |
b3b94faa DT |
897 | } |
898 | ||
419c93e0 SW |
899 | static void gfs2_kill_sb(struct super_block *sb) |
900 | { | |
7c52b166 | 901 | gfs2_delete_debugfs_file(sb->s_fs_info); |
419c93e0 SW |
902 | kill_block_super(sb); |
903 | } | |
904 | ||
86384605 AD |
905 | static void gfs2_kill_sb_meta(struct super_block *sb) |
906 | { | |
907 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
908 | generic_shutdown_super(sb); | |
909 | sdp->sd_vfs_meta = NULL; | |
910 | atomic_dec(&sdp->sd_gfs2mnt->mnt_count); | |
911 | } | |
912 | ||
b3b94faa DT |
913 | struct file_system_type gfs2_fs_type = { |
914 | .name = "gfs2", | |
915 | .fs_flags = FS_REQUIRES_DEV, | |
916 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
917 | .kill_sb = gfs2_kill_sb, |
918 | .owner = THIS_MODULE, | |
919 | }; | |
920 | ||
921 | struct file_system_type gfs2meta_fs_type = { | |
922 | .name = "gfs2meta", | |
923 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 AD |
924 | .get_sb = gfs2_get_sb_meta, |
925 | .kill_sb = gfs2_kill_sb_meta, | |
b3b94faa DT |
926 | .owner = THIS_MODULE, |
927 | }; | |
928 |