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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" | |
b3b94faa | 30 | #include "ops_fstype.h" |
ca5a939b | 31 | #include "ops_dentry.h" |
b3b94faa DT |
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" |
bb3b0e3d | 38 | #include "log.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; | |
b3b94faa | 46 | |
85d1da67 | 47 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
48 | if (!sdp) |
49 | return NULL; | |
50 | ||
5c676f6d | 51 | sb->s_fs_info = sdp; |
b3b94faa DT |
52 | sdp->sd_vfs = sb; |
53 | ||
54 | gfs2_tune_init(&sdp->sd_tune); | |
55 | ||
b3b94faa DT |
56 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); |
57 | spin_lock_init(&sdp->sd_reclaim_lock); | |
58 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
b3b94faa | 59 | |
f55ab26a | 60 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 61 | spin_lock_init(&sdp->sd_statfs_spin); |
f55ab26a | 62 | mutex_init(&sdp->sd_statfs_mutex); |
b3b94faa DT |
63 | |
64 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 65 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
66 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
67 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
68 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
69 | ||
70 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
71 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 72 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 73 | |
b3b94faa DT |
74 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
75 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 76 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
77 | |
78 | spin_lock_init(&sdp->sd_log_lock); | |
b3b94faa DT |
79 | |
80 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); | |
81 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); | |
82 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
83 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
84 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
d7b616e2 | 85 | INIT_LIST_HEAD(&sdp->sd_log_le_ordered); |
b3b94faa | 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); |
16615be1 SW |
92 | atomic_set(&sdp->sd_log_in_flight, 0); |
93 | init_waitqueue_head(&sdp->sd_log_flush_wait); | |
b3b94faa DT |
94 | |
95 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
96 | ||
f55ab26a | 97 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
98 | |
99 | return sdp; | |
100 | } | |
101 | ||
419c93e0 | 102 | static void init_vfs(struct super_block *sb, unsigned noatime) |
b3b94faa | 103 | { |
419c93e0 | 104 | struct gfs2_sbd *sdp = sb->s_fs_info; |
b3b94faa DT |
105 | |
106 | sb->s_magic = GFS2_MAGIC; | |
107 | sb->s_op = &gfs2_super_ops; | |
108 | sb->s_export_op = &gfs2_export_ops; | |
4bd91ba1 | 109 | sb->s_time_gran = 1; |
b3b94faa DT |
110 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
111 | ||
112 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
419c93e0 | 113 | set_bit(noatime, &sdp->sd_flags); |
b3b94faa DT |
114 | |
115 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
116 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
b3b94faa DT |
117 | } |
118 | ||
119 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
120 | { | |
b3b94faa DT |
121 | char *proto, *table; |
122 | int error = 0; | |
123 | ||
124 | proto = sdp->sd_args.ar_lockproto; | |
125 | table = sdp->sd_args.ar_locktable; | |
126 | ||
127 | /* Try to autodetect */ | |
128 | ||
129 | if (!proto[0] || !table[0]) { | |
bb8d8a6f SW |
130 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
131 | if (error) | |
132 | return error; | |
3cf1e7be SW |
133 | |
134 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
b3b94faa DT |
135 | if (error) |
136 | goto out; | |
137 | ||
138 | if (!proto[0]) | |
3cf1e7be | 139 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 140 | if (!table[0]) |
3cf1e7be | 141 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
142 | } |
143 | ||
144 | if (!table[0]) | |
145 | table = sdp->sd_vfs->s_id; | |
146 | ||
147 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
148 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
149 | ||
5d35e31f DC |
150 | table = sdp->sd_table_name; |
151 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
152 | *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 | ||
b3b94faa DT |
167 | for (sdp->sd_glockd_num = 0; |
168 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
169 | sdp->sd_glockd_num++) { | |
170 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
171 | error = IS_ERR(p); | |
172 | if (error) { | |
173 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
174 | goto fail; | |
175 | } | |
176 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
177 | } | |
178 | ||
179 | error = gfs2_glock_nq_num(sdp, | |
180 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
181 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
182 | mount_gh); | |
183 | if (error) { | |
184 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
185 | goto fail; | |
186 | } | |
187 | ||
188 | error = gfs2_glock_nq_num(sdp, | |
189 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
190 | LM_ST_SHARED, | |
579b78a4 | 191 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
192 | &sdp->sd_live_gh); |
193 | if (error) { | |
194 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
195 | goto fail_mount; | |
196 | } | |
197 | ||
198 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
199 | CREATE, &sdp->sd_rename_gl); | |
200 | if (error) { | |
201 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
202 | goto fail_live; | |
203 | } | |
204 | ||
205 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
206 | CREATE, &sdp->sd_trans_gl); | |
207 | if (error) { | |
208 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
209 | goto fail_rename; | |
210 | } | |
211 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
212 | ||
213 | return 0; | |
214 | ||
feaa7bba | 215 | fail_trans: |
b3b94faa | 216 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 217 | fail_rename: |
b3b94faa | 218 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 219 | fail_live: |
b3b94faa | 220 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 221 | fail_mount: |
b3b94faa | 222 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 223 | fail: |
b3b94faa DT |
224 | while (sdp->sd_glockd_num--) |
225 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
226 | ||
b3b94faa DT |
227 | return error; |
228 | } | |
229 | ||
dbb7cae2 SW |
230 | static inline struct inode *gfs2_lookup_root(struct super_block *sb, |
231 | u64 no_addr) | |
f42faf4f | 232 | { |
bb9bcf06 | 233 | return gfs2_inode_lookup(sb, DT_DIR, no_addr, 0); |
f42faf4f SW |
234 | } |
235 | ||
b3b94faa DT |
236 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
237 | { | |
238 | struct super_block *sb = sdp->sd_vfs; | |
239 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 240 | u64 no_addr; |
f42faf4f | 241 | struct inode *inode; |
b3b94faa DT |
242 | int error = 0; |
243 | ||
244 | if (undo) { | |
88721877 RC |
245 | if (sb->s_root) { |
246 | dput(sb->s_root); | |
247 | sb->s_root = NULL; | |
248 | } | |
b3b94faa DT |
249 | return 0; |
250 | } | |
907b9bce | 251 | |
feaa7bba | 252 | error = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
b3b94faa DT |
253 | LM_ST_SHARED, 0, &sb_gh); |
254 | if (error) { | |
255 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
256 | return error; | |
257 | } | |
258 | ||
259 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
260 | if (error) { | |
261 | fs_err(sdp, "can't read superblock: %d\n", error); | |
262 | goto out; | |
263 | } | |
264 | ||
265 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 266 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 267 | error = -EINVAL; |
b3b94faa DT |
268 | fs_err(sdp, "FS block size (%u) is too small for device " |
269 | "block size (%u)\n", | |
270 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
271 | goto out; | |
272 | } | |
273 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 274 | error = -EINVAL; |
b3b94faa DT |
275 | fs_err(sdp, "FS block size (%u) is too big for machine " |
276 | "page size (%u)\n", | |
277 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
278 | goto out; | |
279 | } | |
b3b94faa DT |
280 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
281 | ||
f42faf4f | 282 | /* Get the root inode */ |
dbb7cae2 | 283 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
419c93e0 | 284 | if (sb->s_type == &gfs2meta_fs_type) |
dbb7cae2 SW |
285 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; |
286 | inode = gfs2_lookup_root(sb, no_addr); | |
c9fd4307 SW |
287 | if (IS_ERR(inode)) { |
288 | error = PTR_ERR(inode); | |
f42faf4f SW |
289 | fs_err(sdp, "can't read in root inode: %d\n", error); |
290 | goto out; | |
291 | } | |
b3b94faa | 292 | |
f42faf4f SW |
293 | sb->s_root = d_alloc_root(inode); |
294 | if (!sb->s_root) { | |
295 | fs_err(sdp, "can't get root dentry\n"); | |
296 | error = -ENOMEM; | |
c9fd4307 | 297 | iput(inode); |
34eaae39 DC |
298 | } else |
299 | sb->s_root->d_op = &gfs2_dops; | |
300 | ||
f42faf4f | 301 | out: |
b3b94faa | 302 | gfs2_glock_dq_uninit(&sb_gh); |
b3b94faa DT |
303 | return error; |
304 | } | |
305 | ||
306 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
307 | { | |
308 | struct gfs2_holder ji_gh; | |
309 | struct task_struct *p; | |
5c676f6d | 310 | struct gfs2_inode *ip; |
b3b94faa DT |
311 | int jindex = 1; |
312 | int error = 0; | |
313 | ||
314 | if (undo) { | |
315 | jindex = 0; | |
316 | goto fail_recoverd; | |
317 | } | |
318 | ||
c752666c SW |
319 | sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex"); |
320 | if (IS_ERR(sdp->sd_jindex)) { | |
b3b94faa | 321 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 322 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 323 | } |
feaa7bba | 324 | ip = GFS2_I(sdp->sd_jindex); |
5c676f6d | 325 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
b3b94faa DT |
326 | |
327 | /* Load in the journal index special file */ | |
328 | ||
329 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
330 | if (error) { | |
331 | fs_err(sdp, "can't read journal index: %d\n", error); | |
332 | goto fail; | |
333 | } | |
334 | ||
335 | error = -EINVAL; | |
336 | if (!gfs2_jindex_size(sdp)) { | |
337 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 338 | goto fail_jindex; |
b3b94faa DT |
339 | } |
340 | ||
341 | if (sdp->sd_args.ar_spectator) { | |
342 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
343 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
344 | } else { | |
345 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
346 | fs_err(sdp, "can't mount journal #%u\n", | |
347 | sdp->sd_lockstruct.ls_jid); | |
348 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
349 | gfs2_jindex_size(sdp), | |
350 | gfs2_jindex_size(sdp) - 1); | |
351 | goto fail_jindex; | |
352 | } | |
353 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
354 | ||
feaa7bba | 355 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
356 | &gfs2_journal_glops, |
357 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
358 | &sdp->sd_journal_gh); | |
359 | if (error) { | |
360 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
361 | goto fail_jindex; | |
362 | } | |
363 | ||
feaa7bba SW |
364 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
365 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
75be73a8 | 366 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
367 | &sdp->sd_jinode_gh); |
368 | if (error) { | |
369 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
370 | error); | |
371 | goto fail_journal_gh; | |
372 | } | |
373 | ||
374 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
375 | if (error) { | |
376 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
377 | sdp->sd_jdesc->jd_jid, error); | |
378 | goto fail_jinode_gh; | |
379 | } | |
380 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
381 | } | |
382 | ||
383 | if (sdp->sd_lockstruct.ls_first) { | |
384 | unsigned int x; | |
385 | for (x = 0; x < sdp->sd_journals; x++) { | |
c63e31c2 | 386 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
387 | if (error) { |
388 | fs_err(sdp, "error recovering journal %u: %d\n", | |
389 | x, error); | |
390 | goto fail_jinode_gh; | |
391 | } | |
392 | } | |
393 | ||
394 | gfs2_lm_others_may_mount(sdp); | |
395 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 396 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
397 | if (error) { |
398 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
399 | goto fail_jinode_gh; | |
400 | } | |
401 | } | |
402 | ||
403 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
404 | gfs2_glock_dq_uninit(&ji_gh); | |
405 | jindex = 0; | |
406 | ||
b3b94faa DT |
407 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
408 | error = IS_ERR(p); | |
409 | if (error) { | |
410 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
411 | goto fail_jinode_gh; | |
412 | } | |
413 | sdp->sd_recoverd_process = p; | |
414 | ||
415 | return 0; | |
416 | ||
a91ea69f | 417 | fail_recoverd: |
b3b94faa | 418 | kthread_stop(sdp->sd_recoverd_process); |
a91ea69f | 419 | fail_jinode_gh: |
b3b94faa DT |
420 | if (!sdp->sd_args.ar_spectator) |
421 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 422 | fail_journal_gh: |
b3b94faa DT |
423 | if (!sdp->sd_args.ar_spectator) |
424 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 425 | fail_jindex: |
b3b94faa DT |
426 | gfs2_jindex_free(sdp); |
427 | if (jindex) | |
428 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 429 | fail: |
f42faf4f | 430 | iput(sdp->sd_jindex); |
b3b94faa DT |
431 | return error; |
432 | } | |
433 | ||
b3b94faa DT |
434 | |
435 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
436 | { | |
b3b94faa | 437 | int error = 0; |
5c676f6d | 438 | struct gfs2_inode *ip; |
c9fd4307 | 439 | struct inode *inode; |
b3b94faa DT |
440 | |
441 | if (undo) | |
f42faf4f SW |
442 | goto fail_qinode; |
443 | ||
dbb7cae2 | 444 | inode = gfs2_lookup_root(sdp->sd_vfs, sdp->sd_sb.sb_master_dir.no_addr); |
c9fd4307 SW |
445 | if (IS_ERR(inode)) { |
446 | error = PTR_ERR(inode); | |
f42faf4f SW |
447 | fs_err(sdp, "can't read in master directory: %d\n", error); |
448 | goto fail; | |
449 | } | |
c9fd4307 | 450 | sdp->sd_master_dir = inode; |
f42faf4f SW |
451 | |
452 | error = init_journal(sdp, undo); | |
453 | if (error) | |
454 | goto fail_master; | |
b3b94faa DT |
455 | |
456 | /* Read in the master inode number inode */ | |
c752666c SW |
457 | sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum"); |
458 | if (IS_ERR(sdp->sd_inum_inode)) { | |
459 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 460 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 461 | goto fail_journal; |
b3b94faa DT |
462 | } |
463 | ||
f42faf4f | 464 | |
b3b94faa | 465 | /* Read in the master statfs inode */ |
c752666c SW |
466 | sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs"); |
467 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
468 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 469 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 470 | goto fail_inum; |
b3b94faa DT |
471 | } |
472 | ||
473 | /* Read in the resource index inode */ | |
c752666c SW |
474 | sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex"); |
475 | if (IS_ERR(sdp->sd_rindex)) { | |
476 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
477 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
478 | goto fail_statfs; | |
479 | } | |
feaa7bba | 480 | ip = GFS2_I(sdp->sd_rindex); |
5c676f6d SW |
481 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
482 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
483 | |
484 | /* Read in the quota inode */ | |
c752666c SW |
485 | sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota"); |
486 | if (IS_ERR(sdp->sd_quota_inode)) { | |
487 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
488 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
489 | goto fail_rindex; | |
490 | } | |
b3b94faa DT |
491 | return 0; |
492 | ||
f42faf4f SW |
493 | fail_qinode: |
494 | iput(sdp->sd_quota_inode); | |
f42faf4f | 495 | fail_rindex: |
b3b94faa | 496 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 497 | iput(sdp->sd_rindex); |
f42faf4f SW |
498 | fail_statfs: |
499 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
500 | fail_inum: |
501 | iput(sdp->sd_inum_inode); | |
502 | fail_journal: | |
503 | init_journal(sdp, UNDO); | |
504 | fail_master: | |
505 | iput(sdp->sd_master_dir); | |
506 | fail: | |
b3b94faa DT |
507 | return error; |
508 | } | |
509 | ||
510 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
511 | { | |
f42faf4f | 512 | struct inode *pn = NULL; |
b3b94faa DT |
513 | char buf[30]; |
514 | int error = 0; | |
5c676f6d | 515 | struct gfs2_inode *ip; |
b3b94faa DT |
516 | |
517 | if (sdp->sd_args.ar_spectator) | |
518 | return 0; | |
519 | ||
520 | if (undo) | |
521 | goto fail_qc_gh; | |
522 | ||
c752666c SW |
523 | pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node"); |
524 | if (IS_ERR(pn)) { | |
525 | error = PTR_ERR(pn); | |
b3b94faa DT |
526 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
527 | return error; | |
528 | } | |
529 | ||
530 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
531 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
532 | if (IS_ERR(sdp->sd_ir_inode)) { | |
533 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
534 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
535 | goto fail; | |
536 | } | |
537 | ||
538 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
539 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
540 | if (IS_ERR(sdp->sd_sc_inode)) { | |
541 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
542 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
543 | goto fail_ir_i; | |
544 | } | |
545 | ||
b3b94faa | 546 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
547 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
548 | if (IS_ERR(sdp->sd_qc_inode)) { | |
549 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
550 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
551 | goto fail_ut_i; | |
552 | } | |
553 | ||
f42faf4f | 554 | iput(pn); |
b3b94faa DT |
555 | pn = NULL; |
556 | ||
feaa7bba | 557 | ip = GFS2_I(sdp->sd_ir_inode); |
5c676f6d | 558 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 559 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
560 | &sdp->sd_ir_gh); |
561 | if (error) { | |
562 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
563 | goto fail_qc_i; | |
564 | } | |
565 | ||
feaa7bba | 566 | ip = GFS2_I(sdp->sd_sc_inode); |
5c676f6d | 567 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 568 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
569 | &sdp->sd_sc_gh); |
570 | if (error) { | |
571 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
572 | goto fail_ir_gh; | |
573 | } | |
574 | ||
feaa7bba | 575 | ip = GFS2_I(sdp->sd_qc_inode); |
5c676f6d | 576 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 577 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
578 | &sdp->sd_qc_gh); |
579 | if (error) { | |
580 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
581 | goto fail_ut_gh; | |
582 | } | |
583 | ||
584 | return 0; | |
585 | ||
a91ea69f | 586 | fail_qc_gh: |
b3b94faa | 587 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 588 | fail_ut_gh: |
b3b94faa | 589 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 590 | fail_ir_gh: |
b3b94faa | 591 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); |
a91ea69f | 592 | fail_qc_i: |
f42faf4f | 593 | iput(sdp->sd_qc_inode); |
a91ea69f | 594 | fail_ut_i: |
f42faf4f | 595 | iput(sdp->sd_sc_inode); |
a91ea69f | 596 | fail_ir_i: |
f42faf4f | 597 | iput(sdp->sd_ir_inode); |
a91ea69f | 598 | fail: |
b3b94faa | 599 | if (pn) |
f42faf4f | 600 | iput(pn); |
b3b94faa DT |
601 | return error; |
602 | } | |
603 | ||
604 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
605 | { | |
606 | struct task_struct *p; | |
607 | int error = 0; | |
608 | ||
609 | if (undo) | |
feaa7bba | 610 | goto fail_quotad; |
b3b94faa DT |
611 | |
612 | sdp->sd_log_flush_time = jiffies; | |
613 | sdp->sd_jindex_refresh_time = jiffies; | |
614 | ||
615 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
616 | error = IS_ERR(p); | |
617 | if (error) { | |
618 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
619 | return error; | |
620 | } | |
621 | sdp->sd_logd_process = p; | |
622 | ||
623 | sdp->sd_statfs_sync_time = jiffies; | |
624 | sdp->sd_quota_sync_time = jiffies; | |
625 | ||
626 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
627 | error = IS_ERR(p); | |
628 | if (error) { | |
629 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
630 | goto fail; | |
631 | } | |
632 | sdp->sd_quotad_process = p; | |
633 | ||
b3b94faa DT |
634 | return 0; |
635 | ||
b3b94faa | 636 | |
feaa7bba | 637 | fail_quotad: |
b3b94faa | 638 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 639 | fail: |
b3b94faa | 640 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
641 | return error; |
642 | } | |
643 | ||
644 | /** | |
645 | * fill_super - Read in superblock | |
646 | * @sb: The VFS superblock | |
647 | * @data: Mount options | |
648 | * @silent: Don't complain if it's not a GFS2 filesystem | |
649 | * | |
650 | * Returns: errno | |
651 | */ | |
652 | ||
653 | static int fill_super(struct super_block *sb, void *data, int silent) | |
654 | { | |
655 | struct gfs2_sbd *sdp; | |
656 | struct gfs2_holder mount_gh; | |
657 | int error; | |
658 | ||
659 | sdp = init_sbd(sb); | |
660 | if (!sdp) { | |
d92a8d48 | 661 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
662 | return -ENOMEM; |
663 | } | |
664 | ||
665 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
666 | if (error) { | |
d92a8d48 | 667 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
668 | goto fail; |
669 | } | |
670 | ||
419c93e0 SW |
671 | init_vfs(sb, SDF_NOATIME); |
672 | ||
673 | /* Set up the buffer cache and fill in some fake block size values | |
674 | to allow us to read-in the on-disk superblock. */ | |
675 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
676 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
677 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
678 | GFS2_BASIC_BLOCK_SHIFT; | |
679 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
680 | |
681 | error = init_names(sdp, silent); | |
682 | if (error) | |
683 | goto fail; | |
684 | ||
7c52b166 RP |
685 | gfs2_create_debugfs_file(sdp); |
686 | ||
b3b94faa DT |
687 | error = gfs2_sys_fs_add(sdp); |
688 | if (error) | |
689 | goto fail; | |
690 | ||
691 | error = gfs2_lm_mount(sdp, silent); | |
692 | if (error) | |
693 | goto fail_sys; | |
694 | ||
695 | error = init_locking(sdp, &mount_gh, DO); | |
696 | if (error) | |
697 | goto fail_lm; | |
698 | ||
699 | error = init_sb(sdp, silent, DO); | |
700 | if (error) | |
701 | goto fail_locking; | |
b3b94faa DT |
702 | |
703 | error = init_inodes(sdp, DO); | |
704 | if (error) | |
f42faf4f | 705 | goto fail_sb; |
b3b94faa DT |
706 | |
707 | error = init_per_node(sdp, DO); | |
708 | if (error) | |
709 | goto fail_inodes; | |
710 | ||
711 | error = gfs2_statfs_init(sdp); | |
712 | if (error) { | |
713 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
714 | goto fail_per_node; | |
715 | } | |
716 | ||
717 | error = init_threads(sdp, DO); | |
718 | if (error) | |
719 | goto fail_per_node; | |
720 | ||
721 | if (!(sb->s_flags & MS_RDONLY)) { | |
722 | error = gfs2_make_fs_rw(sdp); | |
723 | if (error) { | |
724 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
725 | goto fail_threads; | |
726 | } | |
727 | } | |
728 | ||
729 | gfs2_glock_dq_uninit(&mount_gh); | |
730 | ||
731 | return 0; | |
732 | ||
a91ea69f | 733 | fail_threads: |
b3b94faa | 734 | init_threads(sdp, UNDO); |
a91ea69f | 735 | fail_per_node: |
b3b94faa | 736 | init_per_node(sdp, UNDO); |
a91ea69f | 737 | fail_inodes: |
b3b94faa | 738 | init_inodes(sdp, UNDO); |
a91ea69f | 739 | fail_sb: |
b3b94faa | 740 | init_sb(sdp, 0, UNDO); |
a91ea69f | 741 | fail_locking: |
b3b94faa | 742 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 743 | fail_lm: |
b3b94faa DT |
744 | gfs2_gl_hash_clear(sdp, WAIT); |
745 | gfs2_lm_unmount(sdp); | |
746 | while (invalidate_inodes(sb)) | |
747 | yield(); | |
a91ea69f | 748 | fail_sys: |
b3b94faa | 749 | gfs2_sys_fs_del(sdp); |
a91ea69f | 750 | fail: |
5f882096 | 751 | gfs2_delete_debugfs_file(sdp); |
a2c45807 | 752 | kfree(sdp); |
5c676f6d | 753 | sb->s_fs_info = NULL; |
b3b94faa DT |
754 | return error; |
755 | } | |
756 | ||
ccd6efd0 AM |
757 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
758 | const char *dev_name, void *data, struct vfsmount *mnt) | |
b3b94faa | 759 | { |
86384605 AD |
760 | struct super_block *sb; |
761 | struct gfs2_sbd *sdp; | |
762 | int error = get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt); | |
763 | if (error) | |
764 | goto out; | |
765 | sb = mnt->mnt_sb; | |
26c1a574 | 766 | sdp = sb->s_fs_info; |
86384605 AD |
767 | sdp->sd_gfs2mnt = mnt; |
768 | out: | |
769 | return error; | |
770 | } | |
771 | ||
907b9bce | 772 | static int fill_super_meta(struct super_block *sb, struct super_block *new, |
86384605 AD |
773 | void *data, int silent) |
774 | { | |
775 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
776 | struct inode *inode; | |
777 | int error = 0; | |
778 | ||
779 | new->s_fs_info = sdp; | |
780 | sdp->sd_vfs_meta = sb; | |
781 | ||
782 | init_vfs(new, SDF_NOATIME); | |
783 | ||
784 | /* Get the master inode */ | |
785 | inode = igrab(sdp->sd_master_dir); | |
786 | ||
787 | new->s_root = d_alloc_root(inode); | |
788 | if (!new->s_root) { | |
789 | fs_err(sdp, "can't get root dentry\n"); | |
790 | error = -ENOMEM; | |
791 | iput(inode); | |
bbbe4512 AB |
792 | } else |
793 | new->s_root->d_op = &gfs2_dops; | |
86384605 AD |
794 | |
795 | return error; | |
796 | } | |
a91ea69f | 797 | |
86384605 AD |
798 | static int set_bdev_super(struct super_block *s, void *data) |
799 | { | |
800 | s->s_bdev = data; | |
801 | s->s_dev = s->s_bdev->bd_dev; | |
802 | return 0; | |
803 | } | |
907b9bce | 804 | |
86384605 AD |
805 | static int test_bdev_super(struct super_block *s, void *data) |
806 | { | |
26c1a574 | 807 | return s->s_bdev == data; |
86384605 AD |
808 | } |
809 | ||
810 | static struct super_block* get_gfs2_sb(const char *dev_name) | |
811 | { | |
812 | struct kstat stat; | |
813 | struct nameidata nd; | |
814 | struct file_system_type *fstype; | |
815 | struct super_block *sb = NULL, *s; | |
86384605 | 816 | int error; |
907b9bce | 817 | |
86384605 AD |
818 | error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd); |
819 | if (error) { | |
907b9bce | 820 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error\n", |
86384605 AD |
821 | dev_name); |
822 | goto out; | |
823 | } | |
824 | error = vfs_getattr(nd.mnt, nd.dentry, &stat); | |
825 | ||
826 | fstype = get_fs_type("gfs2"); | |
adb4ec13 | 827 | list_for_each_entry(s, &fstype->fs_supers, s_instances) { |
86384605 AD |
828 | if ((S_ISBLK(stat.mode) && s->s_dev == stat.rdev) || |
829 | (S_ISDIR(stat.mode) && s == nd.dentry->d_inode->i_sb)) { | |
830 | sb = s; | |
831 | goto free_nd; | |
832 | } | |
833 | } | |
834 | ||
835 | printk(KERN_WARNING "GFS2: Unrecognized block device or " | |
d5a6751b | 836 | "mount point %s\n", dev_name); |
86384605 AD |
837 | |
838 | free_nd: | |
839 | path_release(&nd); | |
840 | out: | |
841 | return sb; | |
842 | } | |
843 | ||
844 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, | |
845 | const char *dev_name, void *data, struct vfsmount *mnt) | |
846 | { | |
847 | int error = 0; | |
848 | struct super_block *sb = NULL, *new; | |
849 | struct gfs2_sbd *sdp; | |
86384605 AD |
850 | |
851 | sb = get_gfs2_sb(dev_name); | |
852 | if (!sb) { | |
853 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); | |
854 | error = -ENOENT; | |
855 | goto error; | |
856 | } | |
2d3ba1ea | 857 | sdp = sb->s_fs_info; |
86384605 AD |
858 | if (sdp->sd_vfs_meta) { |
859 | printk(KERN_WARNING "GFS2: gfs2meta mount already exists\n"); | |
860 | error = -EBUSY; | |
861 | goto error; | |
862 | } | |
f73ca1b7 | 863 | down(&sb->s_bdev->bd_mount_sem); |
86384605 | 864 | new = sget(fs_type, test_bdev_super, set_bdev_super, sb->s_bdev); |
f73ca1b7 | 865 | up(&sb->s_bdev->bd_mount_sem); |
86384605 AD |
866 | if (IS_ERR(new)) { |
867 | error = PTR_ERR(new); | |
868 | goto error; | |
869 | } | |
870 | module_put(fs_type->owner); | |
871 | new->s_flags = flags; | |
872 | strlcpy(new->s_id, sb->s_id, sizeof(new->s_id)); | |
873 | sb_set_blocksize(new, sb->s_blocksize); | |
874 | error = fill_super_meta(sb, new, data, flags & MS_SILENT ? 1 : 0); | |
875 | if (error) { | |
876 | up_write(&new->s_umount); | |
877 | deactivate_super(new); | |
878 | goto error; | |
879 | } | |
907b9bce | 880 | |
86384605 | 881 | new->s_flags |= MS_ACTIVE; |
907b9bce | 882 | |
86384605 AD |
883 | /* Grab a reference to the gfs2 mount point */ |
884 | atomic_inc(&sdp->sd_gfs2mnt->mnt_count); | |
885 | return simple_set_mnt(mnt, new); | |
886 | error: | |
86384605 | 887 | return error; |
b3b94faa DT |
888 | } |
889 | ||
419c93e0 SW |
890 | static void gfs2_kill_sb(struct super_block *sb) |
891 | { | |
d1e2777d AD |
892 | if (sb->s_fs_info) { |
893 | gfs2_delete_debugfs_file(sb->s_fs_info); | |
894 | gfs2_meta_syncfs(sb->s_fs_info); | |
895 | } | |
419c93e0 SW |
896 | kill_block_super(sb); |
897 | } | |
898 | ||
86384605 AD |
899 | static void gfs2_kill_sb_meta(struct super_block *sb) |
900 | { | |
901 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
902 | generic_shutdown_super(sb); | |
903 | sdp->sd_vfs_meta = NULL; | |
904 | atomic_dec(&sdp->sd_gfs2mnt->mnt_count); | |
905 | } | |
906 | ||
b3b94faa DT |
907 | struct file_system_type gfs2_fs_type = { |
908 | .name = "gfs2", | |
909 | .fs_flags = FS_REQUIRES_DEV, | |
910 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
911 | .kill_sb = gfs2_kill_sb, |
912 | .owner = THIS_MODULE, | |
913 | }; | |
914 | ||
915 | struct file_system_type gfs2meta_fs_type = { | |
916 | .name = "gfs2meta", | |
917 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 AD |
918 | .get_sb = gfs2_get_sb_meta, |
919 | .kill_sb = gfs2_kill_sb_meta, | |
b3b94faa DT |
920 | .owner = THIS_MODULE, |
921 | }; | |
922 |