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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" |
b3b94faa DT |
38 | |
39 | #define DO 0 | |
40 | #define UNDO 1 | |
41 | ||
42 | static struct gfs2_sbd *init_sbd(struct super_block *sb) | |
43 | { | |
44 | struct gfs2_sbd *sdp; | |
b3b94faa | 45 | |
85d1da67 | 46 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
47 | if (!sdp) |
48 | return NULL; | |
49 | ||
5c676f6d | 50 | sb->s_fs_info = sdp; |
b3b94faa DT |
51 | sdp->sd_vfs = sb; |
52 | ||
53 | gfs2_tune_init(&sdp->sd_tune); | |
54 | ||
b3b94faa DT |
55 | INIT_LIST_HEAD(&sdp->sd_reclaim_list); |
56 | spin_lock_init(&sdp->sd_reclaim_lock); | |
57 | init_waitqueue_head(&sdp->sd_reclaim_wq); | |
b3b94faa | 58 | |
f55ab26a | 59 | mutex_init(&sdp->sd_inum_mutex); |
b3b94faa | 60 | spin_lock_init(&sdp->sd_statfs_spin); |
f55ab26a | 61 | mutex_init(&sdp->sd_statfs_mutex); |
b3b94faa DT |
62 | |
63 | spin_lock_init(&sdp->sd_rindex_spin); | |
f55ab26a | 64 | mutex_init(&sdp->sd_rindex_mutex); |
b3b94faa DT |
65 | INIT_LIST_HEAD(&sdp->sd_rindex_list); |
66 | INIT_LIST_HEAD(&sdp->sd_rindex_mru_list); | |
67 | INIT_LIST_HEAD(&sdp->sd_rindex_recent_list); | |
68 | ||
69 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
70 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 71 | mutex_init(&sdp->sd_jindex_mutex); |
b3b94faa | 72 | |
b3b94faa DT |
73 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
74 | spin_lock_init(&sdp->sd_quota_spin); | |
f55ab26a | 75 | mutex_init(&sdp->sd_quota_mutex); |
b3b94faa DT |
76 | |
77 | spin_lock_init(&sdp->sd_log_lock); | |
b3b94faa DT |
78 | |
79 | INIT_LIST_HEAD(&sdp->sd_log_le_gl); | |
80 | INIT_LIST_HEAD(&sdp->sd_log_le_buf); | |
81 | INIT_LIST_HEAD(&sdp->sd_log_le_revoke); | |
82 | INIT_LIST_HEAD(&sdp->sd_log_le_rg); | |
83 | INIT_LIST_HEAD(&sdp->sd_log_le_databuf); | |
84 | ||
71b86f56 | 85 | mutex_init(&sdp->sd_log_reserve_mutex); |
b3b94faa DT |
86 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
87 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
88 | ||
484adff8 | 89 | init_rwsem(&sdp->sd_log_flush_lock); |
b3b94faa DT |
90 | INIT_LIST_HEAD(&sdp->sd_log_flush_list); |
91 | ||
92 | INIT_LIST_HEAD(&sdp->sd_revoke_list); | |
93 | ||
f55ab26a | 94 | mutex_init(&sdp->sd_freeze_lock); |
b3b94faa DT |
95 | |
96 | return sdp; | |
97 | } | |
98 | ||
419c93e0 | 99 | static void init_vfs(struct super_block *sb, unsigned noatime) |
b3b94faa | 100 | { |
419c93e0 | 101 | struct gfs2_sbd *sdp = sb->s_fs_info; |
b3b94faa DT |
102 | |
103 | sb->s_magic = GFS2_MAGIC; | |
104 | sb->s_op = &gfs2_super_ops; | |
105 | sb->s_export_op = &gfs2_export_ops; | |
4bd91ba1 | 106 | sb->s_time_gran = 1; |
b3b94faa DT |
107 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
108 | ||
109 | if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME)) | |
419c93e0 | 110 | set_bit(noatime, &sdp->sd_flags); |
b3b94faa DT |
111 | |
112 | /* Don't let the VFS update atimes. GFS2 handles this itself. */ | |
113 | sb->s_flags |= MS_NOATIME | MS_NODIRATIME; | |
b3b94faa DT |
114 | } |
115 | ||
116 | static int init_names(struct gfs2_sbd *sdp, int silent) | |
117 | { | |
b3b94faa DT |
118 | char *proto, *table; |
119 | int error = 0; | |
120 | ||
121 | proto = sdp->sd_args.ar_lockproto; | |
122 | table = sdp->sd_args.ar_locktable; | |
123 | ||
124 | /* Try to autodetect */ | |
125 | ||
126 | if (!proto[0] || !table[0]) { | |
bb8d8a6f SW |
127 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift); |
128 | if (error) | |
129 | return error; | |
3cf1e7be SW |
130 | |
131 | error = gfs2_check_sb(sdp, &sdp->sd_sb, silent); | |
b3b94faa DT |
132 | if (error) |
133 | goto out; | |
134 | ||
135 | if (!proto[0]) | |
3cf1e7be | 136 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 137 | if (!table[0]) |
3cf1e7be | 138 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
139 | } |
140 | ||
141 | if (!table[0]) | |
142 | table = sdp->sd_vfs->s_id; | |
143 | ||
144 | snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto); | |
145 | snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table); | |
146 | ||
b35997d4 RP |
147 | while ((table = strchr(sdp->sd_table_name, '/'))) |
148 | *table = '_'; | |
149 | ||
a91ea69f | 150 | out: |
b3b94faa DT |
151 | return error; |
152 | } | |
153 | ||
154 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
155 | int undo) | |
156 | { | |
157 | struct task_struct *p; | |
158 | int error = 0; | |
159 | ||
160 | if (undo) | |
161 | goto fail_trans; | |
162 | ||
b3b94faa DT |
163 | for (sdp->sd_glockd_num = 0; |
164 | sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd; | |
165 | sdp->sd_glockd_num++) { | |
166 | p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd"); | |
167 | error = IS_ERR(p); | |
168 | if (error) { | |
169 | fs_err(sdp, "can't start glockd thread: %d\n", error); | |
170 | goto fail; | |
171 | } | |
172 | sdp->sd_glockd_process[sdp->sd_glockd_num] = p; | |
173 | } | |
174 | ||
175 | error = gfs2_glock_nq_num(sdp, | |
176 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
177 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
178 | mount_gh); | |
179 | if (error) { | |
180 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
181 | goto fail; | |
182 | } | |
183 | ||
184 | error = gfs2_glock_nq_num(sdp, | |
185 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
186 | LM_ST_SHARED, | |
579b78a4 | 187 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
188 | &sdp->sd_live_gh); |
189 | if (error) { | |
190 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
191 | goto fail_mount; | |
192 | } | |
193 | ||
194 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
195 | CREATE, &sdp->sd_rename_gl); | |
196 | if (error) { | |
197 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
198 | goto fail_live; | |
199 | } | |
200 | ||
201 | error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, | |
202 | CREATE, &sdp->sd_trans_gl); | |
203 | if (error) { | |
204 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
205 | goto fail_rename; | |
206 | } | |
207 | set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags); | |
208 | ||
209 | return 0; | |
210 | ||
feaa7bba | 211 | fail_trans: |
b3b94faa | 212 | gfs2_glock_put(sdp->sd_trans_gl); |
feaa7bba | 213 | fail_rename: |
b3b94faa | 214 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 215 | fail_live: |
b3b94faa | 216 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 217 | fail_mount: |
b3b94faa | 218 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 219 | fail: |
b3b94faa DT |
220 | while (sdp->sd_glockd_num--) |
221 | kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]); | |
222 | ||
b3b94faa DT |
223 | return error; |
224 | } | |
225 | ||
dbb7cae2 SW |
226 | static inline struct inode *gfs2_lookup_root(struct super_block *sb, |
227 | u64 no_addr) | |
f42faf4f | 228 | { |
bb9bcf06 | 229 | return gfs2_inode_lookup(sb, DT_DIR, no_addr, 0); |
f42faf4f SW |
230 | } |
231 | ||
b3b94faa DT |
232 | static int init_sb(struct gfs2_sbd *sdp, int silent, int undo) |
233 | { | |
234 | struct super_block *sb = sdp->sd_vfs; | |
235 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 236 | u64 no_addr; |
f42faf4f | 237 | struct inode *inode; |
b3b94faa DT |
238 | int error = 0; |
239 | ||
240 | if (undo) { | |
88721877 RC |
241 | if (sb->s_root) { |
242 | dput(sb->s_root); | |
243 | sb->s_root = NULL; | |
244 | } | |
b3b94faa DT |
245 | return 0; |
246 | } | |
907b9bce | 247 | |
feaa7bba | 248 | error = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
b3b94faa DT |
249 | LM_ST_SHARED, 0, &sb_gh); |
250 | if (error) { | |
251 | fs_err(sdp, "can't acquire superblock glock: %d\n", error); | |
252 | return error; | |
253 | } | |
254 | ||
255 | error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent); | |
256 | if (error) { | |
257 | fs_err(sdp, "can't read superblock: %d\n", error); | |
258 | goto out; | |
259 | } | |
260 | ||
261 | /* Set up the buffer cache and SB for real */ | |
b3b94faa | 262 | if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) { |
419c93e0 | 263 | error = -EINVAL; |
b3b94faa DT |
264 | fs_err(sdp, "FS block size (%u) is too small for device " |
265 | "block size (%u)\n", | |
266 | sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev)); | |
267 | goto out; | |
268 | } | |
269 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
419c93e0 | 270 | error = -EINVAL; |
b3b94faa DT |
271 | fs_err(sdp, "FS block size (%u) is too big for machine " |
272 | "page size (%u)\n", | |
273 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
274 | goto out; | |
275 | } | |
b3b94faa DT |
276 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
277 | ||
f42faf4f | 278 | /* Get the root inode */ |
dbb7cae2 | 279 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
419c93e0 | 280 | if (sb->s_type == &gfs2meta_fs_type) |
dbb7cae2 SW |
281 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; |
282 | inode = gfs2_lookup_root(sb, no_addr); | |
c9fd4307 SW |
283 | if (IS_ERR(inode)) { |
284 | error = PTR_ERR(inode); | |
f42faf4f SW |
285 | fs_err(sdp, "can't read in root inode: %d\n", error); |
286 | goto out; | |
287 | } | |
b3b94faa | 288 | |
f42faf4f SW |
289 | sb->s_root = d_alloc_root(inode); |
290 | if (!sb->s_root) { | |
291 | fs_err(sdp, "can't get root dentry\n"); | |
292 | error = -ENOMEM; | |
c9fd4307 | 293 | iput(inode); |
f42faf4f | 294 | } |
5bb76af1 | 295 | sb->s_root->d_op = &gfs2_dops; |
f42faf4f | 296 | out: |
b3b94faa | 297 | gfs2_glock_dq_uninit(&sb_gh); |
b3b94faa DT |
298 | return error; |
299 | } | |
300 | ||
301 | static int init_journal(struct gfs2_sbd *sdp, int undo) | |
302 | { | |
303 | struct gfs2_holder ji_gh; | |
304 | struct task_struct *p; | |
5c676f6d | 305 | struct gfs2_inode *ip; |
b3b94faa DT |
306 | int jindex = 1; |
307 | int error = 0; | |
308 | ||
309 | if (undo) { | |
310 | jindex = 0; | |
311 | goto fail_recoverd; | |
312 | } | |
313 | ||
c752666c SW |
314 | sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex"); |
315 | if (IS_ERR(sdp->sd_jindex)) { | |
b3b94faa | 316 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 317 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 318 | } |
feaa7bba | 319 | ip = GFS2_I(sdp->sd_jindex); |
5c676f6d | 320 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
b3b94faa DT |
321 | |
322 | /* Load in the journal index special file */ | |
323 | ||
324 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
325 | if (error) { | |
326 | fs_err(sdp, "can't read journal index: %d\n", error); | |
327 | goto fail; | |
328 | } | |
329 | ||
330 | error = -EINVAL; | |
331 | if (!gfs2_jindex_size(sdp)) { | |
332 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 333 | goto fail_jindex; |
b3b94faa DT |
334 | } |
335 | ||
336 | if (sdp->sd_args.ar_spectator) { | |
337 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
338 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
339 | } else { | |
340 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
341 | fs_err(sdp, "can't mount journal #%u\n", | |
342 | sdp->sd_lockstruct.ls_jid); | |
343 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
344 | gfs2_jindex_size(sdp), | |
345 | gfs2_jindex_size(sdp) - 1); | |
346 | goto fail_jindex; | |
347 | } | |
348 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
349 | ||
feaa7bba | 350 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
351 | &gfs2_journal_glops, |
352 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
353 | &sdp->sd_journal_gh); | |
354 | if (error) { | |
355 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
356 | goto fail_jindex; | |
357 | } | |
358 | ||
feaa7bba SW |
359 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
360 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
75be73a8 | 361 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
362 | &sdp->sd_jinode_gh); |
363 | if (error) { | |
364 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
365 | error); | |
366 | goto fail_journal_gh; | |
367 | } | |
368 | ||
369 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
370 | if (error) { | |
371 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
372 | sdp->sd_jdesc->jd_jid, error); | |
373 | goto fail_jinode_gh; | |
374 | } | |
375 | sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks; | |
376 | } | |
377 | ||
378 | if (sdp->sd_lockstruct.ls_first) { | |
379 | unsigned int x; | |
380 | for (x = 0; x < sdp->sd_journals; x++) { | |
c63e31c2 | 381 | error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); |
b3b94faa DT |
382 | if (error) { |
383 | fs_err(sdp, "error recovering journal %u: %d\n", | |
384 | x, error); | |
385 | goto fail_jinode_gh; | |
386 | } | |
387 | } | |
388 | ||
389 | gfs2_lm_others_may_mount(sdp); | |
390 | } else if (!sdp->sd_args.ar_spectator) { | |
c63e31c2 | 391 | error = gfs2_recover_journal(sdp->sd_jdesc); |
b3b94faa DT |
392 | if (error) { |
393 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
394 | goto fail_jinode_gh; | |
395 | } | |
396 | } | |
397 | ||
398 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); | |
399 | gfs2_glock_dq_uninit(&ji_gh); | |
400 | jindex = 0; | |
401 | ||
b3b94faa DT |
402 | p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd"); |
403 | error = IS_ERR(p); | |
404 | if (error) { | |
405 | fs_err(sdp, "can't start recoverd thread: %d\n", error); | |
406 | goto fail_jinode_gh; | |
407 | } | |
408 | sdp->sd_recoverd_process = p; | |
409 | ||
410 | return 0; | |
411 | ||
a91ea69f | 412 | fail_recoverd: |
b3b94faa | 413 | kthread_stop(sdp->sd_recoverd_process); |
a91ea69f | 414 | fail_jinode_gh: |
b3b94faa DT |
415 | if (!sdp->sd_args.ar_spectator) |
416 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 417 | fail_journal_gh: |
b3b94faa DT |
418 | if (!sdp->sd_args.ar_spectator) |
419 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 420 | fail_jindex: |
b3b94faa DT |
421 | gfs2_jindex_free(sdp); |
422 | if (jindex) | |
423 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 424 | fail: |
f42faf4f | 425 | iput(sdp->sd_jindex); |
b3b94faa DT |
426 | return error; |
427 | } | |
428 | ||
b3b94faa DT |
429 | |
430 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
431 | { | |
b3b94faa | 432 | int error = 0; |
5c676f6d | 433 | struct gfs2_inode *ip; |
c9fd4307 | 434 | struct inode *inode; |
b3b94faa DT |
435 | |
436 | if (undo) | |
f42faf4f SW |
437 | goto fail_qinode; |
438 | ||
dbb7cae2 | 439 | inode = gfs2_lookup_root(sdp->sd_vfs, sdp->sd_sb.sb_master_dir.no_addr); |
c9fd4307 SW |
440 | if (IS_ERR(inode)) { |
441 | error = PTR_ERR(inode); | |
f42faf4f SW |
442 | fs_err(sdp, "can't read in master directory: %d\n", error); |
443 | goto fail; | |
444 | } | |
c9fd4307 | 445 | sdp->sd_master_dir = inode; |
f42faf4f SW |
446 | |
447 | error = init_journal(sdp, undo); | |
448 | if (error) | |
449 | goto fail_master; | |
b3b94faa DT |
450 | |
451 | /* Read in the master inode number inode */ | |
c752666c SW |
452 | sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum"); |
453 | if (IS_ERR(sdp->sd_inum_inode)) { | |
454 | error = PTR_ERR(sdp->sd_inum_inode); | |
b3b94faa | 455 | fs_err(sdp, "can't read in inum inode: %d\n", error); |
f42faf4f | 456 | goto fail_journal; |
b3b94faa DT |
457 | } |
458 | ||
f42faf4f | 459 | |
b3b94faa | 460 | /* Read in the master statfs inode */ |
c752666c SW |
461 | sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs"); |
462 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
463 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 464 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
f42faf4f | 465 | goto fail_inum; |
b3b94faa DT |
466 | } |
467 | ||
468 | /* Read in the resource index inode */ | |
c752666c SW |
469 | sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex"); |
470 | if (IS_ERR(sdp->sd_rindex)) { | |
471 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
472 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
473 | goto fail_statfs; | |
474 | } | |
feaa7bba | 475 | ip = GFS2_I(sdp->sd_rindex); |
5c676f6d SW |
476 | set_bit(GLF_STICKY, &ip->i_gl->gl_flags); |
477 | sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1; | |
b3b94faa DT |
478 | |
479 | /* Read in the quota inode */ | |
c752666c SW |
480 | sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota"); |
481 | if (IS_ERR(sdp->sd_quota_inode)) { | |
482 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
483 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
484 | goto fail_rindex; | |
485 | } | |
b3b94faa DT |
486 | return 0; |
487 | ||
f42faf4f SW |
488 | fail_qinode: |
489 | iput(sdp->sd_quota_inode); | |
f42faf4f | 490 | fail_rindex: |
b3b94faa | 491 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 492 | iput(sdp->sd_rindex); |
f42faf4f SW |
493 | fail_statfs: |
494 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
495 | fail_inum: |
496 | iput(sdp->sd_inum_inode); | |
497 | fail_journal: | |
498 | init_journal(sdp, UNDO); | |
499 | fail_master: | |
500 | iput(sdp->sd_master_dir); | |
501 | fail: | |
b3b94faa DT |
502 | return error; |
503 | } | |
504 | ||
505 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
506 | { | |
f42faf4f | 507 | struct inode *pn = NULL; |
b3b94faa DT |
508 | char buf[30]; |
509 | int error = 0; | |
5c676f6d | 510 | struct gfs2_inode *ip; |
b3b94faa DT |
511 | |
512 | if (sdp->sd_args.ar_spectator) | |
513 | return 0; | |
514 | ||
515 | if (undo) | |
516 | goto fail_qc_gh; | |
517 | ||
c752666c SW |
518 | pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node"); |
519 | if (IS_ERR(pn)) { | |
520 | error = PTR_ERR(pn); | |
b3b94faa DT |
521 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
522 | return error; | |
523 | } | |
524 | ||
525 | sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
526 | sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf); |
527 | if (IS_ERR(sdp->sd_ir_inode)) { | |
528 | error = PTR_ERR(sdp->sd_ir_inode); | |
b3b94faa DT |
529 | fs_err(sdp, "can't find local \"ir\" file: %d\n", error); |
530 | goto fail; | |
531 | } | |
532 | ||
533 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); | |
c752666c SW |
534 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
535 | if (IS_ERR(sdp->sd_sc_inode)) { | |
536 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa DT |
537 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
538 | goto fail_ir_i; | |
539 | } | |
540 | ||
b3b94faa | 541 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
542 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
543 | if (IS_ERR(sdp->sd_qc_inode)) { | |
544 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
545 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
546 | goto fail_ut_i; | |
547 | } | |
548 | ||
f42faf4f | 549 | iput(pn); |
b3b94faa DT |
550 | pn = NULL; |
551 | ||
feaa7bba | 552 | ip = GFS2_I(sdp->sd_ir_inode); |
5c676f6d | 553 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 554 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
555 | &sdp->sd_ir_gh); |
556 | if (error) { | |
557 | fs_err(sdp, "can't lock local \"ir\" file: %d\n", error); | |
558 | goto fail_qc_i; | |
559 | } | |
560 | ||
feaa7bba | 561 | ip = GFS2_I(sdp->sd_sc_inode); |
5c676f6d | 562 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 563 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
564 | &sdp->sd_sc_gh); |
565 | if (error) { | |
566 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
567 | goto fail_ir_gh; | |
568 | } | |
569 | ||
feaa7bba | 570 | ip = GFS2_I(sdp->sd_qc_inode); |
5c676f6d | 571 | error = gfs2_glock_nq_init(ip->i_gl, |
579b78a4 | 572 | LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
573 | &sdp->sd_qc_gh); |
574 | if (error) { | |
575 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
576 | goto fail_ut_gh; | |
577 | } | |
578 | ||
579 | return 0; | |
580 | ||
a91ea69f | 581 | fail_qc_gh: |
b3b94faa | 582 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 583 | fail_ut_gh: |
b3b94faa | 584 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 585 | fail_ir_gh: |
b3b94faa | 586 | gfs2_glock_dq_uninit(&sdp->sd_ir_gh); |
a91ea69f | 587 | fail_qc_i: |
f42faf4f | 588 | iput(sdp->sd_qc_inode); |
a91ea69f | 589 | fail_ut_i: |
f42faf4f | 590 | iput(sdp->sd_sc_inode); |
a91ea69f | 591 | fail_ir_i: |
f42faf4f | 592 | iput(sdp->sd_ir_inode); |
a91ea69f | 593 | fail: |
b3b94faa | 594 | if (pn) |
f42faf4f | 595 | iput(pn); |
b3b94faa DT |
596 | return error; |
597 | } | |
598 | ||
599 | static int init_threads(struct gfs2_sbd *sdp, int undo) | |
600 | { | |
601 | struct task_struct *p; | |
602 | int error = 0; | |
603 | ||
604 | if (undo) | |
feaa7bba | 605 | goto fail_quotad; |
b3b94faa DT |
606 | |
607 | sdp->sd_log_flush_time = jiffies; | |
608 | sdp->sd_jindex_refresh_time = jiffies; | |
609 | ||
610 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
611 | error = IS_ERR(p); | |
612 | if (error) { | |
613 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
614 | return error; | |
615 | } | |
616 | sdp->sd_logd_process = p; | |
617 | ||
618 | sdp->sd_statfs_sync_time = jiffies; | |
619 | sdp->sd_quota_sync_time = jiffies; | |
620 | ||
621 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
622 | error = IS_ERR(p); | |
623 | if (error) { | |
624 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
625 | goto fail; | |
626 | } | |
627 | sdp->sd_quotad_process = p; | |
628 | ||
b3b94faa DT |
629 | return 0; |
630 | ||
b3b94faa | 631 | |
feaa7bba | 632 | fail_quotad: |
b3b94faa | 633 | kthread_stop(sdp->sd_quotad_process); |
feaa7bba | 634 | fail: |
b3b94faa | 635 | kthread_stop(sdp->sd_logd_process); |
b3b94faa DT |
636 | return error; |
637 | } | |
638 | ||
639 | /** | |
640 | * fill_super - Read in superblock | |
641 | * @sb: The VFS superblock | |
642 | * @data: Mount options | |
643 | * @silent: Don't complain if it's not a GFS2 filesystem | |
644 | * | |
645 | * Returns: errno | |
646 | */ | |
647 | ||
648 | static int fill_super(struct super_block *sb, void *data, int silent) | |
649 | { | |
650 | struct gfs2_sbd *sdp; | |
651 | struct gfs2_holder mount_gh; | |
652 | int error; | |
653 | ||
654 | sdp = init_sbd(sb); | |
655 | if (!sdp) { | |
d92a8d48 | 656 | printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
657 | return -ENOMEM; |
658 | } | |
659 | ||
660 | error = gfs2_mount_args(sdp, (char *)data, 0); | |
661 | if (error) { | |
d92a8d48 | 662 | printk(KERN_WARNING "GFS2: can't parse mount arguments\n"); |
b3b94faa DT |
663 | goto fail; |
664 | } | |
665 | ||
419c93e0 SW |
666 | init_vfs(sb, SDF_NOATIME); |
667 | ||
668 | /* Set up the buffer cache and fill in some fake block size values | |
669 | to allow us to read-in the on-disk superblock. */ | |
670 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
671 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
672 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
673 | GFS2_BASIC_BLOCK_SHIFT; | |
674 | sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift; | |
b3b94faa DT |
675 | |
676 | error = init_names(sdp, silent); | |
677 | if (error) | |
678 | goto fail; | |
679 | ||
7c52b166 RP |
680 | gfs2_create_debugfs_file(sdp); |
681 | ||
b3b94faa DT |
682 | error = gfs2_sys_fs_add(sdp); |
683 | if (error) | |
684 | goto fail; | |
685 | ||
686 | error = gfs2_lm_mount(sdp, silent); | |
687 | if (error) | |
688 | goto fail_sys; | |
689 | ||
690 | error = init_locking(sdp, &mount_gh, DO); | |
691 | if (error) | |
692 | goto fail_lm; | |
693 | ||
694 | error = init_sb(sdp, silent, DO); | |
695 | if (error) | |
696 | goto fail_locking; | |
b3b94faa DT |
697 | |
698 | error = init_inodes(sdp, DO); | |
699 | if (error) | |
f42faf4f | 700 | goto fail_sb; |
b3b94faa DT |
701 | |
702 | error = init_per_node(sdp, DO); | |
703 | if (error) | |
704 | goto fail_inodes; | |
705 | ||
706 | error = gfs2_statfs_init(sdp); | |
707 | if (error) { | |
708 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
709 | goto fail_per_node; | |
710 | } | |
711 | ||
712 | error = init_threads(sdp, DO); | |
713 | if (error) | |
714 | goto fail_per_node; | |
715 | ||
716 | if (!(sb->s_flags & MS_RDONLY)) { | |
717 | error = gfs2_make_fs_rw(sdp); | |
718 | if (error) { | |
719 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
720 | goto fail_threads; | |
721 | } | |
722 | } | |
723 | ||
724 | gfs2_glock_dq_uninit(&mount_gh); | |
725 | ||
726 | return 0; | |
727 | ||
a91ea69f | 728 | fail_threads: |
b3b94faa | 729 | init_threads(sdp, UNDO); |
a91ea69f | 730 | fail_per_node: |
b3b94faa | 731 | init_per_node(sdp, UNDO); |
a91ea69f | 732 | fail_inodes: |
b3b94faa | 733 | init_inodes(sdp, UNDO); |
a91ea69f | 734 | fail_sb: |
b3b94faa | 735 | init_sb(sdp, 0, UNDO); |
a91ea69f | 736 | fail_locking: |
b3b94faa | 737 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 738 | fail_lm: |
b3b94faa DT |
739 | gfs2_gl_hash_clear(sdp, WAIT); |
740 | gfs2_lm_unmount(sdp); | |
741 | while (invalidate_inodes(sb)) | |
742 | yield(); | |
a91ea69f | 743 | fail_sys: |
b3b94faa | 744 | gfs2_sys_fs_del(sdp); |
a91ea69f | 745 | fail: |
5f882096 | 746 | gfs2_delete_debugfs_file(sdp); |
a2c45807 | 747 | kfree(sdp); |
5c676f6d | 748 | sb->s_fs_info = NULL; |
b3b94faa DT |
749 | return error; |
750 | } | |
751 | ||
ccd6efd0 AM |
752 | static int gfs2_get_sb(struct file_system_type *fs_type, int flags, |
753 | const char *dev_name, void *data, struct vfsmount *mnt) | |
b3b94faa | 754 | { |
86384605 AD |
755 | struct super_block *sb; |
756 | struct gfs2_sbd *sdp; | |
757 | int error = get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt); | |
758 | if (error) | |
759 | goto out; | |
760 | sb = mnt->mnt_sb; | |
26c1a574 | 761 | sdp = sb->s_fs_info; |
86384605 AD |
762 | sdp->sd_gfs2mnt = mnt; |
763 | out: | |
764 | return error; | |
765 | } | |
766 | ||
907b9bce | 767 | static int fill_super_meta(struct super_block *sb, struct super_block *new, |
86384605 AD |
768 | void *data, int silent) |
769 | { | |
770 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
771 | struct inode *inode; | |
772 | int error = 0; | |
773 | ||
774 | new->s_fs_info = sdp; | |
775 | sdp->sd_vfs_meta = sb; | |
776 | ||
777 | init_vfs(new, SDF_NOATIME); | |
778 | ||
779 | /* Get the master inode */ | |
780 | inode = igrab(sdp->sd_master_dir); | |
781 | ||
782 | new->s_root = d_alloc_root(inode); | |
783 | if (!new->s_root) { | |
784 | fs_err(sdp, "can't get root dentry\n"); | |
785 | error = -ENOMEM; | |
786 | iput(inode); | |
bbbe4512 AB |
787 | } else |
788 | new->s_root->d_op = &gfs2_dops; | |
86384605 AD |
789 | |
790 | return error; | |
791 | } | |
a91ea69f | 792 | |
86384605 AD |
793 | static int set_bdev_super(struct super_block *s, void *data) |
794 | { | |
795 | s->s_bdev = data; | |
796 | s->s_dev = s->s_bdev->bd_dev; | |
797 | return 0; | |
798 | } | |
907b9bce | 799 | |
86384605 AD |
800 | static int test_bdev_super(struct super_block *s, void *data) |
801 | { | |
26c1a574 | 802 | return s->s_bdev == data; |
86384605 AD |
803 | } |
804 | ||
805 | static struct super_block* get_gfs2_sb(const char *dev_name) | |
806 | { | |
807 | struct kstat stat; | |
808 | struct nameidata nd; | |
809 | struct file_system_type *fstype; | |
810 | struct super_block *sb = NULL, *s; | |
86384605 | 811 | int error; |
907b9bce | 812 | |
86384605 AD |
813 | error = path_lookup(dev_name, LOOKUP_FOLLOW, &nd); |
814 | if (error) { | |
907b9bce | 815 | printk(KERN_WARNING "GFS2: path_lookup on %s returned error\n", |
86384605 AD |
816 | dev_name); |
817 | goto out; | |
818 | } | |
819 | error = vfs_getattr(nd.mnt, nd.dentry, &stat); | |
820 | ||
821 | fstype = get_fs_type("gfs2"); | |
adb4ec13 | 822 | list_for_each_entry(s, &fstype->fs_supers, s_instances) { |
86384605 AD |
823 | if ((S_ISBLK(stat.mode) && s->s_dev == stat.rdev) || |
824 | (S_ISDIR(stat.mode) && s == nd.dentry->d_inode->i_sb)) { | |
825 | sb = s; | |
826 | goto free_nd; | |
827 | } | |
828 | } | |
829 | ||
830 | printk(KERN_WARNING "GFS2: Unrecognized block device or " | |
d5a6751b | 831 | "mount point %s\n", dev_name); |
86384605 AD |
832 | |
833 | free_nd: | |
834 | path_release(&nd); | |
835 | out: | |
836 | return sb; | |
837 | } | |
838 | ||
839 | static int gfs2_get_sb_meta(struct file_system_type *fs_type, int flags, | |
840 | const char *dev_name, void *data, struct vfsmount *mnt) | |
841 | { | |
842 | int error = 0; | |
843 | struct super_block *sb = NULL, *new; | |
844 | struct gfs2_sbd *sdp; | |
86384605 AD |
845 | |
846 | sb = get_gfs2_sb(dev_name); | |
847 | if (!sb) { | |
848 | printk(KERN_WARNING "GFS2: gfs2 mount does not exist\n"); | |
849 | error = -ENOENT; | |
850 | goto error; | |
851 | } | |
2d3ba1ea | 852 | sdp = sb->s_fs_info; |
86384605 AD |
853 | if (sdp->sd_vfs_meta) { |
854 | printk(KERN_WARNING "GFS2: gfs2meta mount already exists\n"); | |
855 | error = -EBUSY; | |
856 | goto error; | |
857 | } | |
f73ca1b7 | 858 | down(&sb->s_bdev->bd_mount_sem); |
86384605 | 859 | new = sget(fs_type, test_bdev_super, set_bdev_super, sb->s_bdev); |
f73ca1b7 | 860 | up(&sb->s_bdev->bd_mount_sem); |
86384605 AD |
861 | if (IS_ERR(new)) { |
862 | error = PTR_ERR(new); | |
863 | goto error; | |
864 | } | |
865 | module_put(fs_type->owner); | |
866 | new->s_flags = flags; | |
867 | strlcpy(new->s_id, sb->s_id, sizeof(new->s_id)); | |
868 | sb_set_blocksize(new, sb->s_blocksize); | |
869 | error = fill_super_meta(sb, new, data, flags & MS_SILENT ? 1 : 0); | |
870 | if (error) { | |
871 | up_write(&new->s_umount); | |
872 | deactivate_super(new); | |
873 | goto error; | |
874 | } | |
907b9bce | 875 | |
86384605 | 876 | new->s_flags |= MS_ACTIVE; |
907b9bce | 877 | |
86384605 AD |
878 | /* Grab a reference to the gfs2 mount point */ |
879 | atomic_inc(&sdp->sd_gfs2mnt->mnt_count); | |
880 | return simple_set_mnt(mnt, new); | |
881 | error: | |
86384605 | 882 | return error; |
b3b94faa DT |
883 | } |
884 | ||
419c93e0 SW |
885 | static void gfs2_kill_sb(struct super_block *sb) |
886 | { | |
7c52b166 | 887 | gfs2_delete_debugfs_file(sb->s_fs_info); |
419c93e0 SW |
888 | kill_block_super(sb); |
889 | } | |
890 | ||
86384605 AD |
891 | static void gfs2_kill_sb_meta(struct super_block *sb) |
892 | { | |
893 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
894 | generic_shutdown_super(sb); | |
895 | sdp->sd_vfs_meta = NULL; | |
896 | atomic_dec(&sdp->sd_gfs2mnt->mnt_count); | |
897 | } | |
898 | ||
b3b94faa DT |
899 | struct file_system_type gfs2_fs_type = { |
900 | .name = "gfs2", | |
901 | .fs_flags = FS_REQUIRES_DEV, | |
902 | .get_sb = gfs2_get_sb, | |
419c93e0 SW |
903 | .kill_sb = gfs2_kill_sb, |
904 | .owner = THIS_MODULE, | |
905 | }; | |
906 | ||
907 | struct file_system_type gfs2meta_fs_type = { | |
908 | .name = "gfs2meta", | |
909 | .fs_flags = FS_REQUIRES_DEV, | |
86384605 AD |
910 | .get_sb = gfs2_get_sb_meta, |
911 | .kill_sb = gfs2_kill_sb_meta, | |
b3b94faa DT |
912 | .owner = THIS_MODULE, |
913 | }; | |
914 |