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Commit | Line | Data |
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7336d0e6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b3b94faa DT |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
cf45b752 | 4 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
5 | */ |
6 | ||
d77d1b58 JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
b3b94faa DT |
9 | #include <linux/sched.h> |
10 | #include <linux/slab.h> | |
11 | #include <linux/spinlock.h> | |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
b3b94faa DT |
14 | #include <linux/blkdev.h> |
15 | #include <linux/kthread.h> | |
afeacc8c | 16 | #include <linux/export.h> |
86384605 AD |
17 | #include <linux/namei.h> |
18 | #include <linux/mount.h> | |
5c676f6d | 19 | #include <linux/gfs2_ondisk.h> |
cc632e7f | 20 | #include <linux/quotaops.h> |
56aa72d0 | 21 | #include <linux/lockdep.h> |
7f78e035 | 22 | #include <linux/module.h> |
95fe66de | 23 | #include <linux/backing-dev.h> |
1f52aa08 | 24 | #include <linux/fs_parser.h> |
b3b94faa DT |
25 | |
26 | #include "gfs2.h" | |
5c676f6d | 27 | #include "incore.h" |
da6dd40d | 28 | #include "bmap.h" |
b3b94faa DT |
29 | #include "glock.h" |
30 | #include "glops.h" | |
31 | #include "inode.h" | |
b3b94faa DT |
32 | #include "recovery.h" |
33 | #include "rgrp.h" | |
34 | #include "super.h" | |
b3b94faa | 35 | #include "sys.h" |
5c676f6d | 36 | #include "util.h" |
bb3b0e3d | 37 | #include "log.h" |
9ac1b4d9 | 38 | #include "quota.h" |
b5289681 | 39 | #include "dir.h" |
70d4ee94 | 40 | #include "meta_io.h" |
63997775 | 41 | #include "trace_gfs2.h" |
f4686c26 | 42 | #include "lops.h" |
b3b94faa DT |
43 | |
44 | #define DO 0 | |
45 | #define UNDO 1 | |
46 | ||
9b8df98f SW |
47 | /** |
48 | * gfs2_tune_init - Fill a gfs2_tune structure with default values | |
49 | * @gt: tune | |
50 | * | |
51 | */ | |
52 | ||
53 | static void gfs2_tune_init(struct gfs2_tune *gt) | |
54 | { | |
55 | spin_lock_init(>->gt_spin); | |
56 | ||
9b8df98f SW |
57 | gt->gt_quota_warn_period = 10; |
58 | gt->gt_quota_scale_num = 1; | |
59 | gt->gt_quota_scale_den = 1; | |
9b8df98f | 60 | gt->gt_new_files_jdata = 0; |
47a9a527 | 61 | gt->gt_max_readahead = BIT(18); |
9b8df98f | 62 | gt->gt_complain_secs = 10; |
9b8df98f SW |
63 | } |
64 | ||
2a27b755 AG |
65 | void free_sbd(struct gfs2_sbd *sdp) |
66 | { | |
67 | if (sdp->sd_lkstats) | |
68 | free_percpu(sdp->sd_lkstats); | |
69 | kfree(sdp); | |
70 | } | |
71 | ||
b3b94faa DT |
72 | static struct gfs2_sbd *init_sbd(struct super_block *sb) |
73 | { | |
74 | struct gfs2_sbd *sdp; | |
70d4ee94 | 75 | struct address_space *mapping; |
b3b94faa | 76 | |
85d1da67 | 77 | sdp = kzalloc(sizeof(struct gfs2_sbd), GFP_KERNEL); |
b3b94faa DT |
78 | if (!sdp) |
79 | return NULL; | |
80 | ||
b3b94faa | 81 | sdp->sd_vfs = sb; |
a245769f | 82 | sdp->sd_lkstats = alloc_percpu(struct gfs2_pcpu_lkstats); |
2a27b755 AG |
83 | if (!sdp->sd_lkstats) |
84 | goto fail; | |
4c62bd9c | 85 | sb->s_fs_info = sdp; |
a245769f | 86 | |
ba6e9364 | 87 | set_bit(SDF_NOJOURNALID, &sdp->sd_flags); |
b3b94faa DT |
88 | gfs2_tune_init(&sdp->sd_tune); |
89 | ||
e402746a | 90 | init_waitqueue_head(&sdp->sd_glock_wait); |
ad26967b | 91 | init_waitqueue_head(&sdp->sd_async_glock_wait); |
e402746a | 92 | atomic_set(&sdp->sd_glock_disposal, 0); |
3942ae53 | 93 | init_completion(&sdp->sd_locking_init); |
fd95e81c | 94 | init_completion(&sdp->sd_wdack); |
b3b94faa | 95 | spin_lock_init(&sdp->sd_statfs_spin); |
b3b94faa DT |
96 | |
97 | spin_lock_init(&sdp->sd_rindex_spin); | |
7c9ca621 | 98 | sdp->sd_rindex_tree.rb_node = NULL; |
b3b94faa DT |
99 | |
100 | INIT_LIST_HEAD(&sdp->sd_jindex_list); | |
101 | spin_lock_init(&sdp->sd_jindex_spin); | |
f55ab26a | 102 | mutex_init(&sdp->sd_jindex_mutex); |
0e48e055 | 103 | init_completion(&sdp->sd_journal_ready); |
b3b94faa | 104 | |
b3b94faa | 105 | INIT_LIST_HEAD(&sdp->sd_quota_list); |
f55ab26a | 106 | mutex_init(&sdp->sd_quota_mutex); |
e46c772d | 107 | mutex_init(&sdp->sd_quota_sync_mutex); |
37b2c837 | 108 | init_waitqueue_head(&sdp->sd_quota_wait); |
2d9e7230 | 109 | spin_lock_init(&sdp->sd_bitmap_lock); |
b3b94faa | 110 | |
97fd734b AD |
111 | INIT_LIST_HEAD(&sdp->sd_sc_inodes_list); |
112 | ||
70d4ee94 SW |
113 | mapping = &sdp->sd_aspace; |
114 | ||
39849d69 | 115 | address_space_init_once(mapping); |
1b2ad412 | 116 | mapping->a_ops = &gfs2_rgrp_aops; |
70d4ee94 SW |
117 | mapping->host = sb->s_bdev->bd_inode; |
118 | mapping->flags = 0; | |
119 | mapping_set_gfp_mask(mapping, GFP_NOFS); | |
120 | mapping->private_data = NULL; | |
70d4ee94 SW |
121 | mapping->writeback_index = 0; |
122 | ||
b3b94faa | 123 | spin_lock_init(&sdp->sd_log_lock); |
5e687eac | 124 | atomic_set(&sdp->sd_log_pinned, 0); |
a5b1d3fc AG |
125 | INIT_LIST_HEAD(&sdp->sd_log_revokes); |
126 | INIT_LIST_HEAD(&sdp->sd_log_ordered); | |
45138990 | 127 | spin_lock_init(&sdp->sd_ordered_lock); |
b3b94faa | 128 | |
5e687eac BM |
129 | init_waitqueue_head(&sdp->sd_log_waitq); |
130 | init_waitqueue_head(&sdp->sd_logd_waitq); | |
d6a079e8 | 131 | spin_lock_init(&sdp->sd_ail_lock); |
b3b94faa DT |
132 | INIT_LIST_HEAD(&sdp->sd_ail1_list); |
133 | INIT_LIST_HEAD(&sdp->sd_ail2_list); | |
134 | ||
484adff8 | 135 | init_rwsem(&sdp->sd_log_flush_lock); |
16615be1 SW |
136 | atomic_set(&sdp->sd_log_in_flight, 0); |
137 | init_waitqueue_head(&sdp->sd_log_flush_wait); | |
2e60d768 BM |
138 | atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN); |
139 | mutex_init(&sdp->sd_freeze_mutex); | |
b3b94faa | 140 | |
b3b94faa | 141 | return sdp; |
b3b94faa | 142 | |
2a27b755 AG |
143 | fail: |
144 | free_sbd(sdp); | |
145 | return NULL; | |
146 | } | |
b3b94faa | 147 | |
9b8df98f SW |
148 | /** |
149 | * gfs2_check_sb - Check superblock | |
150 | * @sdp: the filesystem | |
9b8df98f SW |
151 | * @silent: Don't print a message if the check fails |
152 | * | |
153 | * Checks the version code of the FS is one that we understand how to | |
154 | * read and that the sizes of the various on-disk structures have not | |
155 | * changed. | |
156 | */ | |
157 | ||
32e471ef | 158 | static int gfs2_check_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f | 159 | { |
32e471ef SW |
160 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
161 | ||
9b8df98f SW |
162 | if (sb->sb_magic != GFS2_MAGIC || |
163 | sb->sb_type != GFS2_METATYPE_SB) { | |
164 | if (!silent) | |
d77d1b58 | 165 | pr_warn("not a GFS2 filesystem\n"); |
9b8df98f SW |
166 | return -EINVAL; |
167 | } | |
168 | ||
47b7ec1d AP |
169 | if (sb->sb_fs_format < GFS2_FS_FORMAT_MIN || |
170 | sb->sb_fs_format > GFS2_FS_FORMAT_MAX || | |
0ddc5154 AT |
171 | sb->sb_multihost_format != GFS2_FORMAT_MULTI) { |
172 | fs_warn(sdp, "Unknown on-disk format, unable to mount\n"); | |
173 | return -EINVAL; | |
174 | } | |
9b8df98f | 175 | |
0ddc5154 AT |
176 | if (sb->sb_bsize < 512 || sb->sb_bsize > PAGE_SIZE || |
177 | (sb->sb_bsize & (sb->sb_bsize - 1))) { | |
bff2e532 | 178 | pr_warn("Invalid block size\n"); |
0ddc5154 AT |
179 | return -EINVAL; |
180 | } | |
9b8df98f | 181 | |
0ddc5154 | 182 | return 0; |
9b8df98f SW |
183 | } |
184 | ||
4246a0b6 | 185 | static void end_bio_io_page(struct bio *bio) |
9b8df98f SW |
186 | { |
187 | struct page *page = bio->bi_private; | |
188 | ||
4e4cbee9 | 189 | if (!bio->bi_status) |
9b8df98f SW |
190 | SetPageUptodate(page); |
191 | else | |
4e4cbee9 | 192 | pr_warn("error %d reading superblock\n", bio->bi_status); |
9b8df98f SW |
193 | unlock_page(page); |
194 | } | |
195 | ||
32e471ef | 196 | static void gfs2_sb_in(struct gfs2_sbd *sdp, const void *buf) |
9b8df98f | 197 | { |
32e471ef SW |
198 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
199 | struct super_block *s = sdp->sd_vfs; | |
9b8df98f SW |
200 | const struct gfs2_sb *str = buf; |
201 | ||
202 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); | |
203 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); | |
9b8df98f SW |
204 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); |
205 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); | |
206 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); | |
207 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); | |
208 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); | |
209 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); | |
210 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); | |
211 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); | |
212 | ||
213 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); | |
214 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); | |
85787090 | 215 | memcpy(&s->s_uuid, str->sb_uuid, 16); |
9b8df98f SW |
216 | } |
217 | ||
218 | /** | |
219 | * gfs2_read_super - Read the gfs2 super block from disk | |
220 | * @sdp: The GFS2 super block | |
221 | * @sector: The location of the super block | |
c551f66c | 222 | * @silent: Don't print a message if the check fails |
9b8df98f SW |
223 | * |
224 | * This uses the bio functions to read the super block from disk | |
225 | * because we want to be 100% sure that we never read cached data. | |
226 | * A super block is read twice only during each GFS2 mount and is | |
227 | * never written to by the filesystem. The first time its read no | |
228 | * locks are held, and the only details which are looked at are those | |
229 | * relating to the locking protocol. Once locking is up and working, | |
230 | * the sb is read again under the lock to establish the location of | |
231 | * the master directory (contains pointers to journals etc) and the | |
232 | * root directory. | |
233 | * | |
234 | * Returns: 0 on success or error | |
235 | */ | |
236 | ||
32e471ef | 237 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) |
9b8df98f SW |
238 | { |
239 | struct super_block *sb = sdp->sd_vfs; | |
240 | struct gfs2_sb *p; | |
241 | struct page *page; | |
242 | struct bio *bio; | |
243 | ||
244 | page = alloc_page(GFP_NOFS); | |
245 | if (unlikely(!page)) | |
ac3beb6a | 246 | return -ENOMEM; |
9b8df98f SW |
247 | |
248 | ClearPageUptodate(page); | |
249 | ClearPageDirty(page); | |
250 | lock_page(page); | |
251 | ||
07888c66 | 252 | bio = bio_alloc(sb->s_bdev, 1, REQ_OP_READ | REQ_META, GFP_NOFS); |
4f024f37 | 253 | bio->bi_iter.bi_sector = sector * (sb->s_blocksize >> 9); |
9b8df98f SW |
254 | bio_add_page(bio, page, PAGE_SIZE, 0); |
255 | ||
256 | bio->bi_end_io = end_bio_io_page; | |
257 | bio->bi_private = page; | |
4e49ea4a | 258 | submit_bio(bio); |
9b8df98f SW |
259 | wait_on_page_locked(page); |
260 | bio_put(bio); | |
261 | if (!PageUptodate(page)) { | |
262 | __free_page(page); | |
263 | return -EIO; | |
264 | } | |
265 | p = kmap(page); | |
32e471ef | 266 | gfs2_sb_in(sdp, p); |
9b8df98f SW |
267 | kunmap(page); |
268 | __free_page(page); | |
32e471ef | 269 | return gfs2_check_sb(sdp, silent); |
9b8df98f | 270 | } |
6bac243f | 271 | |
9b8df98f SW |
272 | /** |
273 | * gfs2_read_sb - Read super block | |
274 | * @sdp: The GFS2 superblock | |
9b8df98f SW |
275 | * @silent: Don't print message if mount fails |
276 | * | |
277 | */ | |
278 | ||
6bac243f | 279 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f SW |
280 | { |
281 | u32 hash_blocks, ind_blocks, leaf_blocks; | |
282 | u32 tmp_blocks; | |
283 | unsigned int x; | |
284 | int error; | |
285 | ||
32e471ef | 286 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
9b8df98f SW |
287 | if (error) { |
288 | if (!silent) | |
289 | fs_err(sdp, "can't read superblock\n"); | |
290 | return error; | |
291 | } | |
292 | ||
9b8df98f SW |
293 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
294 | GFS2_BASIC_BLOCK_SHIFT; | |
47a9a527 | 295 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
9b8df98f SW |
296 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - |
297 | sizeof(struct gfs2_dinode)) / sizeof(u64); | |
298 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - | |
299 | sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
2e9eeaa1 BP |
300 | sdp->sd_ldptrs = (sdp->sd_sb.sb_bsize - |
301 | sizeof(struct gfs2_log_descriptor)) / sizeof(u64); | |
9b8df98f SW |
302 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); |
303 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; | |
304 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; | |
305 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); | |
306 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - | |
307 | sizeof(struct gfs2_meta_header)) / | |
308 | sizeof(struct gfs2_quota_change); | |
a68a0a35 BP |
309 | sdp->sd_blocks_per_bitmap = (sdp->sd_sb.sb_bsize - |
310 | sizeof(struct gfs2_meta_header)) | |
311 | * GFS2_NBBY; /* not the rgrp bitmap, subsequent bitmaps only */ | |
9b8df98f | 312 | |
2129b428 AG |
313 | /* |
314 | * We always keep at least one block reserved for revokes in | |
315 | * transactions. This greatly simplifies allocating additional | |
316 | * revoke blocks. | |
317 | */ | |
318 | atomic_set(&sdp->sd_log_revokes_available, sdp->sd_ldptrs); | |
319 | ||
9b8df98f SW |
320 | /* Compute maximum reservation required to add a entry to a directory */ |
321 | ||
47a9a527 | 322 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * BIT(GFS2_DIR_MAX_DEPTH), |
9b8df98f SW |
323 | sdp->sd_jbsize); |
324 | ||
325 | ind_blocks = 0; | |
326 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { | |
327 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); | |
328 | ind_blocks += tmp_blocks; | |
329 | } | |
330 | ||
331 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; | |
332 | ||
333 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; | |
334 | ||
335 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - | |
336 | sizeof(struct gfs2_dinode); | |
337 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; | |
338 | for (x = 2;; x++) { | |
339 | u64 space, d; | |
340 | u32 m; | |
341 | ||
342 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; | |
343 | d = space; | |
344 | m = do_div(d, sdp->sd_inptrs); | |
345 | ||
346 | if (d != sdp->sd_heightsize[x - 1] || m) | |
347 | break; | |
348 | sdp->sd_heightsize[x] = space; | |
349 | } | |
350 | sdp->sd_max_height = x; | |
351 | sdp->sd_heightsize[x] = ~0; | |
352 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); | |
353 | ||
471f3db2 BM |
354 | sdp->sd_max_dents_per_leaf = (sdp->sd_sb.sb_bsize - |
355 | sizeof(struct gfs2_leaf)) / | |
356 | GFS2_MIN_DIRENT_SIZE; | |
9b8df98f SW |
357 | return 0; |
358 | } | |
359 | ||
b3b94faa DT |
360 | static int init_names(struct gfs2_sbd *sdp, int silent) |
361 | { | |
b3b94faa DT |
362 | char *proto, *table; |
363 | int error = 0; | |
364 | ||
365 | proto = sdp->sd_args.ar_lockproto; | |
366 | table = sdp->sd_args.ar_locktable; | |
367 | ||
368 | /* Try to autodetect */ | |
369 | ||
370 | if (!proto[0] || !table[0]) { | |
32e471ef | 371 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
bb8d8a6f SW |
372 | if (error) |
373 | return error; | |
3cf1e7be | 374 | |
b3b94faa | 375 | if (!proto[0]) |
3cf1e7be | 376 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 377 | if (!table[0]) |
3cf1e7be | 378 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
379 | } |
380 | ||
381 | if (!table[0]) | |
382 | table = sdp->sd_vfs->s_id; | |
383 | ||
00377d8e JD |
384 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
385 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); | |
b3b94faa | 386 | |
5d35e31f DC |
387 | table = sdp->sd_table_name; |
388 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
389 | *table = '_'; |
390 | ||
b3b94faa DT |
391 | return error; |
392 | } | |
393 | ||
394 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
395 | int undo) | |
396 | { | |
b3b94faa DT |
397 | int error = 0; |
398 | ||
399 | if (undo) | |
400 | goto fail_trans; | |
401 | ||
b3b94faa DT |
402 | error = gfs2_glock_nq_num(sdp, |
403 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
404 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
405 | mount_gh); | |
406 | if (error) { | |
407 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
408 | goto fail; | |
409 | } | |
410 | ||
411 | error = gfs2_glock_nq_num(sdp, | |
412 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
413 | LM_ST_SHARED, | |
579b78a4 | 414 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
415 | &sdp->sd_live_gh); |
416 | if (error) { | |
417 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
418 | goto fail_mount; | |
419 | } | |
420 | ||
421 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
422 | CREATE, &sdp->sd_rename_gl); | |
423 | if (error) { | |
424 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
425 | goto fail_live; | |
426 | } | |
427 | ||
24972557 BM |
428 | error = gfs2_glock_get(sdp, GFS2_FREEZE_LOCK, &gfs2_freeze_glops, |
429 | CREATE, &sdp->sd_freeze_gl); | |
b3b94faa DT |
430 | if (error) { |
431 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
432 | goto fail_rename; | |
433 | } | |
b3b94faa DT |
434 | |
435 | return 0; | |
436 | ||
feaa7bba | 437 | fail_trans: |
24972557 | 438 | gfs2_glock_put(sdp->sd_freeze_gl); |
feaa7bba | 439 | fail_rename: |
b3b94faa | 440 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 441 | fail_live: |
b3b94faa | 442 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 443 | fail_mount: |
b3b94faa | 444 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 445 | fail: |
b3b94faa DT |
446 | return error; |
447 | } | |
448 | ||
9b8df98f SW |
449 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
450 | u64 no_addr, const char *name) | |
f42faf4f | 451 | { |
9b8df98f SW |
452 | struct gfs2_sbd *sdp = sb->s_fs_info; |
453 | struct dentry *dentry; | |
454 | struct inode *inode; | |
455 | ||
3ce37b2c AG |
456 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, |
457 | GFS2_BLKST_FREE /* ignore */); | |
9b8df98f SW |
458 | if (IS_ERR(inode)) { |
459 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); | |
460 | return PTR_ERR(inode); | |
461 | } | |
48fde701 | 462 | dentry = d_make_root(inode); |
9b8df98f SW |
463 | if (!dentry) { |
464 | fs_err(sdp, "can't alloc %s dentry\n", name); | |
9b8df98f SW |
465 | return -ENOMEM; |
466 | } | |
9b8df98f SW |
467 | *dptr = dentry; |
468 | return 0; | |
f42faf4f SW |
469 | } |
470 | ||
9b8df98f | 471 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
b3b94faa DT |
472 | { |
473 | struct super_block *sb = sdp->sd_vfs; | |
474 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 475 | u64 no_addr; |
9b8df98f | 476 | int ret; |
b3b94faa | 477 | |
9b8df98f SW |
478 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
479 | LM_ST_SHARED, 0, &sb_gh); | |
480 | if (ret) { | |
481 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); | |
482 | return ret; | |
b3b94faa | 483 | } |
907b9bce | 484 | |
6bac243f | 485 | ret = gfs2_read_sb(sdp, silent); |
9b8df98f SW |
486 | if (ret) { |
487 | fs_err(sdp, "can't read superblock: %d\n", ret); | |
b3b94faa DT |
488 | goto out; |
489 | } | |
490 | ||
866eef48 AG |
491 | switch(sdp->sd_sb.sb_fs_format) { |
492 | case GFS2_FS_FORMAT_MAX: | |
493 | sb->s_xattr = gfs2_xattr_handlers_max; | |
494 | break; | |
495 | ||
496 | case GFS2_FS_FORMAT_MIN: | |
497 | sb->s_xattr = gfs2_xattr_handlers_min; | |
498 | break; | |
499 | ||
500 | default: | |
501 | BUG(); | |
502 | } | |
503 | ||
b3b94faa | 504 | /* Set up the buffer cache and SB for real */ |
e1defc4f | 505 | if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) { |
9b8df98f | 506 | ret = -EINVAL; |
b3b94faa DT |
507 | fs_err(sdp, "FS block size (%u) is too small for device " |
508 | "block size (%u)\n", | |
e1defc4f | 509 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
b3b94faa DT |
510 | goto out; |
511 | } | |
512 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
9b8df98f | 513 | ret = -EINVAL; |
b3b94faa DT |
514 | fs_err(sdp, "FS block size (%u) is too big for machine " |
515 | "page size (%u)\n", | |
516 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
517 | goto out; | |
518 | } | |
b3b94faa DT |
519 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
520 | ||
f42faf4f | 521 | /* Get the root inode */ |
dbb7cae2 | 522 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
9b8df98f SW |
523 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
524 | if (ret) | |
f42faf4f | 525 | goto out; |
b3b94faa | 526 | |
9b8df98f SW |
527 | /* Get the master inode */ |
528 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; | |
529 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); | |
530 | if (ret) { | |
531 | dput(sdp->sd_root_dir); | |
532 | goto out; | |
533 | } | |
534 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); | |
f42faf4f | 535 | out: |
b3b94faa | 536 | gfs2_glock_dq_uninit(&sb_gh); |
9b8df98f | 537 | return ret; |
b3b94faa DT |
538 | } |
539 | ||
f057f6cd | 540 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
da755fdb | 541 | { |
f057f6cd SW |
542 | char *message = "FIRSTMOUNT=Done"; |
543 | char *envp[] = { message, NULL }; | |
e0c2a9aa DT |
544 | |
545 | fs_info(sdp, "first mount done, others may mount\n"); | |
546 | ||
547 | if (sdp->sd_lockstruct.ls_ops->lm_first_done) | |
548 | sdp->sd_lockstruct.ls_ops->lm_first_done(sdp); | |
549 | ||
f057f6cd | 550 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); |
da755fdb SW |
551 | } |
552 | ||
b5289681 SW |
553 | /** |
554 | * gfs2_jindex_hold - Grab a lock on the jindex | |
555 | * @sdp: The GFS2 superblock | |
556 | * @ji_gh: the holder for the jindex glock | |
557 | * | |
558 | * Returns: errno | |
559 | */ | |
560 | ||
561 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) | |
562 | { | |
563 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); | |
564 | struct qstr name; | |
565 | char buf[20]; | |
566 | struct gfs2_jdesc *jd; | |
567 | int error; | |
568 | ||
569 | name.name = buf; | |
570 | ||
571 | mutex_lock(&sdp->sd_jindex_mutex); | |
572 | ||
573 | for (;;) { | |
a72d2401 BP |
574 | struct gfs2_inode *jip; |
575 | ||
b5289681 SW |
576 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); |
577 | if (error) | |
578 | break; | |
579 | ||
580 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); | |
581 | name.hash = gfs2_disk_hash(name.name, name.len); | |
582 | ||
583 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); | |
584 | if (error == -ENOENT) { | |
585 | error = 0; | |
586 | break; | |
587 | } | |
588 | ||
589 | gfs2_glock_dq_uninit(ji_gh); | |
590 | ||
591 | if (error) | |
592 | break; | |
593 | ||
594 | error = -ENOMEM; | |
595 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); | |
596 | if (!jd) | |
597 | break; | |
598 | ||
599 | INIT_LIST_HEAD(&jd->extent_list); | |
a17d758b BP |
600 | INIT_LIST_HEAD(&jd->jd_revoke_list); |
601 | ||
6ecd7c2d | 602 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
b5289681 | 603 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
15a798f7 | 604 | if (IS_ERR_OR_NULL(jd->jd_inode)) { |
b5289681 SW |
605 | if (!jd->jd_inode) |
606 | error = -ENOENT; | |
607 | else | |
608 | error = PTR_ERR(jd->jd_inode); | |
609 | kfree(jd); | |
610 | break; | |
611 | } | |
612 | ||
1b8550b5 | 613 | d_mark_dontcache(jd->jd_inode); |
b5289681 SW |
614 | spin_lock(&sdp->sd_jindex_spin); |
615 | jd->jd_jid = sdp->sd_journals++; | |
a72d2401 BP |
616 | jip = GFS2_I(jd->jd_inode); |
617 | jd->jd_no_addr = jip->i_no_addr; | |
b5289681 SW |
618 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); |
619 | spin_unlock(&sdp->sd_jindex_spin); | |
620 | } | |
621 | ||
622 | mutex_unlock(&sdp->sd_jindex_mutex); | |
623 | ||
624 | return error; | |
625 | } | |
626 | ||
97fd734b AD |
627 | /** |
628 | * init_statfs - look up and initialize master and local (per node) statfs inodes | |
629 | * @sdp: The GFS2 superblock | |
630 | * | |
631 | * This should be called after the jindex is initialized in init_journal() and | |
632 | * before gfs2_journal_recovery() is called because we need to be able to write | |
633 | * to these inodes during recovery. | |
634 | * | |
635 | * Returns: errno | |
636 | */ | |
637 | static int init_statfs(struct gfs2_sbd *sdp) | |
638 | { | |
639 | int error = 0; | |
640 | struct inode *master = d_inode(sdp->sd_master_dir); | |
641 | struct inode *pn = NULL; | |
642 | char buf[30]; | |
643 | struct gfs2_jdesc *jd; | |
644 | struct gfs2_inode *ip; | |
645 | ||
646 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); | |
647 | if (IS_ERR(sdp->sd_statfs_inode)) { | |
648 | error = PTR_ERR(sdp->sd_statfs_inode); | |
649 | fs_err(sdp, "can't read in statfs inode: %d\n", error); | |
7e5b9266 | 650 | goto out; |
97fd734b | 651 | } |
7e5b9266 BP |
652 | if (sdp->sd_args.ar_spectator) |
653 | goto out; | |
97fd734b AD |
654 | |
655 | pn = gfs2_lookup_simple(master, "per_node"); | |
656 | if (IS_ERR(pn)) { | |
657 | error = PTR_ERR(pn); | |
658 | fs_err(sdp, "can't find per_node directory: %d\n", error); | |
659 | goto put_statfs; | |
660 | } | |
661 | ||
662 | /* For each jid, lookup the corresponding local statfs inode in the | |
663 | * per_node metafs directory and save it in the sdp->sd_sc_inodes_list. */ | |
664 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
665 | struct local_statfs_inode *lsi = | |
666 | kmalloc(sizeof(struct local_statfs_inode), GFP_NOFS); | |
667 | if (!lsi) { | |
668 | error = -ENOMEM; | |
669 | goto free_local; | |
670 | } | |
671 | sprintf(buf, "statfs_change%u", jd->jd_jid); | |
672 | lsi->si_sc_inode = gfs2_lookup_simple(pn, buf); | |
673 | if (IS_ERR(lsi->si_sc_inode)) { | |
674 | error = PTR_ERR(lsi->si_sc_inode); | |
675 | fs_err(sdp, "can't find local \"sc\" file#%u: %d\n", | |
676 | jd->jd_jid, error); | |
a6579cbf | 677 | kfree(lsi); |
97fd734b AD |
678 | goto free_local; |
679 | } | |
680 | lsi->si_jid = jd->jd_jid; | |
681 | if (jd->jd_jid == sdp->sd_jdesc->jd_jid) | |
682 | sdp->sd_sc_inode = lsi->si_sc_inode; | |
683 | ||
684 | list_add_tail(&lsi->si_list, &sdp->sd_sc_inodes_list); | |
685 | } | |
686 | ||
687 | iput(pn); | |
5d49d350 | 688 | pn = NULL; |
97fd734b AD |
689 | ip = GFS2_I(sdp->sd_sc_inode); |
690 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, | |
691 | &sdp->sd_sc_gh); | |
692 | if (error) { | |
693 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
694 | goto free_local; | |
695 | } | |
70c11ba8 BP |
696 | /* read in the local statfs buffer - other nodes don't change it. */ |
697 | error = gfs2_meta_inode_buffer(ip, &sdp->sd_sc_bh); | |
698 | if (error) { | |
699 | fs_err(sdp, "Cannot read in local statfs: %d\n", error); | |
700 | goto unlock_sd_gh; | |
701 | } | |
97fd734b AD |
702 | return 0; |
703 | ||
70c11ba8 BP |
704 | unlock_sd_gh: |
705 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); | |
97fd734b AD |
706 | free_local: |
707 | free_local_statfs_inodes(sdp); | |
708 | iput(pn); | |
709 | put_statfs: | |
710 | iput(sdp->sd_statfs_inode); | |
7e5b9266 | 711 | out: |
97fd734b AD |
712 | return error; |
713 | } | |
714 | ||
715 | /* Uninitialize and free up memory used by the list of statfs inodes */ | |
716 | static void uninit_statfs(struct gfs2_sbd *sdp) | |
717 | { | |
7e5b9266 | 718 | if (!sdp->sd_args.ar_spectator) { |
70c11ba8 | 719 | brelse(sdp->sd_sc_bh); |
7e5b9266 BP |
720 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
721 | free_local_statfs_inodes(sdp); | |
722 | } | |
97fd734b AD |
723 | iput(sdp->sd_statfs_inode); |
724 | } | |
725 | ||
b3b94faa DT |
726 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
727 | { | |
2b0143b5 | 728 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa | 729 | struct gfs2_holder ji_gh; |
5c676f6d | 730 | struct gfs2_inode *ip; |
b3b94faa DT |
731 | int jindex = 1; |
732 | int error = 0; | |
733 | ||
734 | if (undo) { | |
735 | jindex = 0; | |
c4af59bd | 736 | goto fail_statfs; |
b3b94faa DT |
737 | } |
738 | ||
9b8df98f | 739 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
c752666c | 740 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 741 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 742 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 743 | } |
b3b94faa DT |
744 | |
745 | /* Load in the journal index special file */ | |
746 | ||
747 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
748 | if (error) { | |
749 | fs_err(sdp, "can't read journal index: %d\n", error); | |
750 | goto fail; | |
751 | } | |
752 | ||
0e5a9fb0 | 753 | error = -EUSERS; |
b3b94faa DT |
754 | if (!gfs2_jindex_size(sdp)) { |
755 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 756 | goto fail_jindex; |
b3b94faa DT |
757 | } |
758 | ||
f07b3520 | 759 | atomic_set(&sdp->sd_log_blks_needed, 0); |
b3b94faa DT |
760 | if (sdp->sd_args.ar_spectator) { |
761 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 762 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
763 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
764 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
b3b94faa DT |
765 | } else { |
766 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
767 | fs_err(sdp, "can't mount journal #%u\n", | |
768 | sdp->sd_lockstruct.ls_jid); | |
769 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
770 | gfs2_jindex_size(sdp), | |
771 | gfs2_jindex_size(sdp) - 1); | |
772 | goto fail_jindex; | |
773 | } | |
774 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
775 | ||
feaa7bba | 776 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa | 777 | &gfs2_journal_glops, |
601ef0d5 BP |
778 | LM_ST_EXCLUSIVE, |
779 | LM_FLAG_NOEXP | GL_NOCACHE, | |
b3b94faa DT |
780 | &sdp->sd_journal_gh); |
781 | if (error) { | |
782 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
783 | goto fail_jindex; | |
784 | } | |
785 | ||
feaa7bba | 786 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
601ef0d5 | 787 | sdp->sd_jinode_gl = ip->i_gl; |
feaa7bba | 788 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, |
75be73a8 | 789 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
790 | &sdp->sd_jinode_gh); |
791 | if (error) { | |
792 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
793 | error); | |
794 | goto fail_journal_gh; | |
795 | } | |
796 | ||
797 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
798 | if (error) { | |
799 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
800 | sdp->sd_jdesc->jd_jid, error); | |
801 | goto fail_jinode_gh; | |
802 | } | |
fd041f0b | 803 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
804 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
805 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
da6dd40d BP |
806 | |
807 | /* Map the extents for this journal's blocks */ | |
b50f227b | 808 | gfs2_map_journal_extents(sdp, sdp->sd_jdesc); |
b3b94faa | 809 | } |
63997775 | 810 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
b3b94faa | 811 | |
97fd734b AD |
812 | /* Lookup statfs inodes here so journal recovery can use them. */ |
813 | error = init_statfs(sdp); | |
814 | if (error) | |
815 | goto fail_jinode_gh; | |
816 | ||
b3b94faa DT |
817 | if (sdp->sd_lockstruct.ls_first) { |
818 | unsigned int x; | |
819 | for (x = 0; x < sdp->sd_journals; x++) { | |
1d12d175 BP |
820 | struct gfs2_jdesc *jd = gfs2_jdesc_find(sdp, x); |
821 | ||
822 | if (sdp->sd_args.ar_spectator) { | |
7d9f9249 | 823 | error = check_journal_clean(sdp, jd, true); |
1d12d175 | 824 | if (error) |
97fd734b | 825 | goto fail_statfs; |
1d12d175 BP |
826 | continue; |
827 | } | |
828 | error = gfs2_recover_journal(jd, true); | |
b3b94faa DT |
829 | if (error) { |
830 | fs_err(sdp, "error recovering journal %u: %d\n", | |
831 | x, error); | |
97fd734b | 832 | goto fail_statfs; |
b3b94faa DT |
833 | } |
834 | } | |
835 | ||
f057f6cd | 836 | gfs2_others_may_mount(sdp); |
b3b94faa | 837 | } else if (!sdp->sd_args.ar_spectator) { |
6ecd7c2d | 838 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
b3b94faa DT |
839 | if (error) { |
840 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
97fd734b | 841 | goto fail_statfs; |
b3b94faa DT |
842 | } |
843 | } | |
844 | ||
086cc672 | 845 | sdp->sd_log_idle = 1; |
b3b94faa DT |
846 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
847 | gfs2_glock_dq_uninit(&ji_gh); | |
848 | jindex = 0; | |
2e60d768 | 849 | INIT_WORK(&sdp->sd_freeze_work, gfs2_freeze_func); |
b3b94faa DT |
850 | return 0; |
851 | ||
97fd734b AD |
852 | fail_statfs: |
853 | uninit_statfs(sdp); | |
a91ea69f | 854 | fail_jinode_gh: |
601ef0d5 BP |
855 | /* A withdraw may have done dq/uninit so now we need to check it */ |
856 | if (!sdp->sd_args.ar_spectator && | |
857 | gfs2_holder_initialized(&sdp->sd_jinode_gh)) | |
b3b94faa | 858 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); |
a91ea69f | 859 | fail_journal_gh: |
601ef0d5 BP |
860 | if (!sdp->sd_args.ar_spectator && |
861 | gfs2_holder_initialized(&sdp->sd_journal_gh)) | |
b3b94faa | 862 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); |
a91ea69f | 863 | fail_jindex: |
b3b94faa DT |
864 | gfs2_jindex_free(sdp); |
865 | if (jindex) | |
866 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 867 | fail: |
f42faf4f | 868 | iput(sdp->sd_jindex); |
b3b94faa DT |
869 | return error; |
870 | } | |
871 | ||
56aa72d0 | 872 | static struct lock_class_key gfs2_quota_imutex_key; |
b3b94faa DT |
873 | |
874 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
875 | { | |
b3b94faa | 876 | int error = 0; |
2b0143b5 | 877 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
878 | |
879 | if (undo) | |
f42faf4f SW |
880 | goto fail_qinode; |
881 | ||
f42faf4f | 882 | error = init_journal(sdp, undo); |
0e48e055 | 883 | complete_all(&sdp->sd_journal_ready); |
f42faf4f | 884 | if (error) |
9b8df98f | 885 | goto fail; |
b3b94faa | 886 | |
b3b94faa | 887 | /* Read in the resource index inode */ |
9b8df98f | 888 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
c752666c SW |
889 | if (IS_ERR(sdp->sd_rindex)) { |
890 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa | 891 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
97fd734b | 892 | goto fail_journal; |
b3b94faa | 893 | } |
cf45b752 | 894 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
895 | |
896 | /* Read in the quota inode */ | |
9b8df98f | 897 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
c752666c SW |
898 | if (IS_ERR(sdp->sd_quota_inode)) { |
899 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
900 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
901 | goto fail_rindex; | |
902 | } | |
56aa72d0 | 903 | /* |
3e7aafc3 | 904 | * i_rwsem on quota files is special. Since this inode is hidden system |
56aa72d0 JK |
905 | * file, we are safe to define locking ourselves. |
906 | */ | |
9902af79 | 907 | lockdep_set_class(&sdp->sd_quota_inode->i_rwsem, |
56aa72d0 | 908 | &gfs2_quota_imutex_key); |
a365fbf3 SW |
909 | |
910 | error = gfs2_rindex_update(sdp); | |
911 | if (error) | |
912 | goto fail_qinode; | |
913 | ||
b3b94faa DT |
914 | return 0; |
915 | ||
f42faf4f SW |
916 | fail_qinode: |
917 | iput(sdp->sd_quota_inode); | |
f42faf4f | 918 | fail_rindex: |
b3b94faa | 919 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 920 | iput(sdp->sd_rindex); |
f42faf4f SW |
921 | fail_journal: |
922 | init_journal(sdp, UNDO); | |
f42faf4f | 923 | fail: |
b3b94faa DT |
924 | return error; |
925 | } | |
926 | ||
927 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
928 | { | |
f42faf4f | 929 | struct inode *pn = NULL; |
b3b94faa DT |
930 | char buf[30]; |
931 | int error = 0; | |
5c676f6d | 932 | struct gfs2_inode *ip; |
2b0143b5 | 933 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
934 | |
935 | if (sdp->sd_args.ar_spectator) | |
936 | return 0; | |
937 | ||
938 | if (undo) | |
939 | goto fail_qc_gh; | |
940 | ||
9b8df98f | 941 | pn = gfs2_lookup_simple(master, "per_node"); |
c752666c SW |
942 | if (IS_ERR(pn)) { |
943 | error = PTR_ERR(pn); | |
b3b94faa DT |
944 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
945 | return error; | |
946 | } | |
947 | ||
b3b94faa | 948 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
949 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
950 | if (IS_ERR(sdp->sd_qc_inode)) { | |
951 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
952 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
953 | goto fail_ut_i; | |
954 | } | |
955 | ||
f42faf4f | 956 | iput(pn); |
b3b94faa DT |
957 | pn = NULL; |
958 | ||
feaa7bba | 959 | ip = GFS2_I(sdp->sd_qc_inode); |
8d8291ae | 960 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
961 | &sdp->sd_qc_gh); |
962 | if (error) { | |
963 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
97fd734b | 964 | goto fail_qc_i; |
b3b94faa DT |
965 | } |
966 | ||
967 | return 0; | |
968 | ||
a91ea69f | 969 | fail_qc_gh: |
b3b94faa | 970 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 971 | fail_qc_i: |
f42faf4f | 972 | iput(sdp->sd_qc_inode); |
a91ea69f | 973 | fail_ut_i: |
6fde2242 | 974 | iput(pn); |
b3b94faa DT |
975 | return error; |
976 | } | |
977 | ||
f057f6cd | 978 | static const match_table_t nolock_tokens = { |
ea22eee4 | 979 | { Opt_jid, "jid=%d", }, |
f057f6cd SW |
980 | { Opt_err, NULL }, |
981 | }; | |
982 | ||
983 | static const struct lm_lockops nolock_ops = { | |
984 | .lm_proto_name = "lock_nolock", | |
fc0e38da | 985 | .lm_put_lock = gfs2_glock_free, |
f057f6cd SW |
986 | .lm_tokens = &nolock_tokens, |
987 | }; | |
988 | ||
da755fdb SW |
989 | /** |
990 | * gfs2_lm_mount - mount a locking protocol | |
991 | * @sdp: the filesystem | |
da755fdb SW |
992 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
993 | * | |
994 | * Returns: errno | |
995 | */ | |
996 | ||
997 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
998 | { | |
f057f6cd SW |
999 | const struct lm_lockops *lm; |
1000 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
1001 | struct gfs2_args *args = &sdp->sd_args; | |
1002 | const char *proto = sdp->sd_proto_name; | |
1003 | const char *table = sdp->sd_table_name; | |
f057f6cd SW |
1004 | char *o, *options; |
1005 | int ret; | |
da755fdb | 1006 | |
f057f6cd SW |
1007 | if (!strcmp("lock_nolock", proto)) { |
1008 | lm = &nolock_ops; | |
1009 | sdp->sd_args.ar_localflocks = 1; | |
f057f6cd SW |
1010 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
1011 | } else if (!strcmp("lock_dlm", proto)) { | |
1012 | lm = &gfs2_dlm_ops; | |
1013 | #endif | |
1014 | } else { | |
d77d1b58 | 1015 | pr_info("can't find protocol %s\n", proto); |
f057f6cd SW |
1016 | return -ENOENT; |
1017 | } | |
da755fdb SW |
1018 | |
1019 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
1020 | ||
f057f6cd SW |
1021 | ls->ls_ops = lm; |
1022 | ls->ls_first = 1; | |
da755fdb | 1023 | |
f057f6cd SW |
1024 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
1025 | substring_t tmp[MAX_OPT_ARGS]; | |
1026 | int token, option; | |
1027 | ||
1028 | if (!o || !*o) | |
1029 | continue; | |
1030 | ||
1031 | token = match_token(o, *lm->lm_tokens, tmp); | |
1032 | switch (token) { | |
1033 | case Opt_jid: | |
1034 | ret = match_int(&tmp[0], &option); | |
1035 | if (ret || option < 0) | |
1036 | goto hostdata_error; | |
ba6e9364 SW |
1037 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
1038 | ls->ls_jid = option; | |
f057f6cd SW |
1039 | break; |
1040 | case Opt_id: | |
4875647a | 1041 | case Opt_nodir: |
2b88f7c5 | 1042 | /* Obsolete, but left for backward compat purposes */ |
f057f6cd SW |
1043 | break; |
1044 | case Opt_first: | |
1045 | ret = match_int(&tmp[0], &option); | |
1046 | if (ret || (option != 0 && option != 1)) | |
1047 | goto hostdata_error; | |
1048 | ls->ls_first = option; | |
1049 | break; | |
f057f6cd SW |
1050 | case Opt_err: |
1051 | default: | |
1052 | hostdata_error: | |
1053 | fs_info(sdp, "unknown hostdata (%s)\n", o); | |
1054 | return -EINVAL; | |
1055 | } | |
da755fdb SW |
1056 | } |
1057 | ||
f057f6cd | 1058 | if (lm->lm_mount == NULL) { |
47b7ec1d | 1059 | fs_info(sdp, "Now mounting FS (format %u)...\n", sdp->sd_sb.sb_fs_format); |
19237039 | 1060 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 1061 | return 0; |
da755fdb | 1062 | } |
e0c2a9aa | 1063 | ret = lm->lm_mount(sdp, table); |
f057f6cd | 1064 | if (ret == 0) |
47b7ec1d AP |
1065 | fs_info(sdp, "Joined cluster. Now mounting FS (format %u)...\n", |
1066 | sdp->sd_sb.sb_fs_format); | |
19237039 | 1067 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 1068 | return ret; |
da755fdb SW |
1069 | } |
1070 | ||
1071 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
1072 | { | |
f057f6cd | 1073 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
eb43e660 | 1074 | if (likely(!gfs2_withdrawn(sdp)) && lm->lm_unmount) |
f057f6cd | 1075 | lm->lm_unmount(sdp); |
da755fdb | 1076 | } |
b3b94faa | 1077 | |
ba6e9364 SW |
1078 | static int wait_on_journal(struct gfs2_sbd *sdp) |
1079 | { | |
ba6e9364 SW |
1080 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
1081 | return 0; | |
1082 | ||
74316201 N |
1083 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, TASK_INTERRUPTIBLE) |
1084 | ? -EINTR : 0; | |
ba6e9364 SW |
1085 | } |
1086 | ||
8633ecfa SW |
1087 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
1088 | { | |
1089 | struct super_block *sb = sdp->sd_vfs; | |
1090 | char ro[20]; | |
1091 | char spectator[20]; | |
1092 | char *envp[] = { ro, spectator, NULL }; | |
bc98a42c | 1093 | sprintf(ro, "RDONLY=%d", sb_rdonly(sb)); |
8633ecfa SW |
1094 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
1095 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); | |
1096 | } | |
1097 | ||
a28dc123 BP |
1098 | static int init_threads(struct gfs2_sbd *sdp) |
1099 | { | |
1100 | struct task_struct *p; | |
1101 | int error = 0; | |
1102 | ||
1103 | p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); | |
1104 | if (IS_ERR(p)) { | |
1105 | error = PTR_ERR(p); | |
1106 | fs_err(sdp, "can't start logd thread: %d\n", error); | |
1107 | return error; | |
1108 | } | |
1109 | sdp->sd_logd_process = p; | |
1110 | ||
1111 | p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); | |
1112 | if (IS_ERR(p)) { | |
1113 | error = PTR_ERR(p); | |
1114 | fs_err(sdp, "can't start quotad thread: %d\n", error); | |
1115 | goto fail; | |
1116 | } | |
1117 | sdp->sd_quotad_process = p; | |
1118 | return 0; | |
1119 | ||
1120 | fail: | |
1121 | kthread_stop(sdp->sd_logd_process); | |
1122 | sdp->sd_logd_process = NULL; | |
1123 | return error; | |
1124 | } | |
1125 | ||
b3b94faa | 1126 | /** |
1f52aa08 | 1127 | * gfs2_fill_super - Read in superblock |
b3b94faa | 1128 | * @sb: The VFS superblock |
c551f66c | 1129 | * @fc: Mount options and flags |
b3b94faa | 1130 | * |
1f52aa08 | 1131 | * Returns: -errno |
b3b94faa | 1132 | */ |
1f52aa08 | 1133 | static int gfs2_fill_super(struct super_block *sb, struct fs_context *fc) |
b3b94faa | 1134 | { |
1f52aa08 AP |
1135 | struct gfs2_args *args = fc->fs_private; |
1136 | int silent = fc->sb_flags & SB_SILENT; | |
b3b94faa DT |
1137 | struct gfs2_sbd *sdp; |
1138 | struct gfs2_holder mount_gh; | |
96b1454f | 1139 | struct gfs2_holder freeze_gh; |
b3b94faa DT |
1140 | int error; |
1141 | ||
1142 | sdp = init_sbd(sb); | |
1143 | if (!sdp) { | |
d77d1b58 | 1144 | pr_warn("can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1145 | return -ENOMEM; |
1146 | } | |
f55073ff | 1147 | sdp->sd_args = *args; |
b3b94faa | 1148 | |
fe64d517 | 1149 | if (sdp->sd_args.ar_spectator) { |
1751e8a6 | 1150 | sb->s_flags |= SB_RDONLY; |
e8ca5cc5 | 1151 | set_bit(SDF_RORECOVERY, &sdp->sd_flags); |
fe64d517 | 1152 | } |
6f04c1c7 | 1153 | if (sdp->sd_args.ar_posix_acl) |
1751e8a6 | 1154 | sb->s_flags |= SB_POSIXACL; |
f25934c5 CH |
1155 | if (sdp->sd_args.ar_nobarrier) |
1156 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
6f04c1c7 | 1157 | |
1751e8a6 | 1158 | sb->s_flags |= SB_NOSEC; |
719ee344 SW |
1159 | sb->s_magic = GFS2_MAGIC; |
1160 | sb->s_op = &gfs2_super_ops; | |
41ced6dc | 1161 | sb->s_d_op = &gfs2_dops; |
719ee344 | 1162 | sb->s_export_op = &gfs2_export_ops; |
cc632e7f | 1163 | sb->s_qcop = &gfs2_quotactl_ops; |
de3b08d3 | 1164 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
cc632e7f | 1165 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
719ee344 SW |
1166 | sb->s_time_gran = 1; |
1167 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1168 | |
1169 | /* Set up the buffer cache and fill in some fake block size values | |
1170 | to allow us to read-in the on-disk superblock. */ | |
1171 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
1172 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
1173 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
1174 | GFS2_BASIC_BLOCK_SHIFT; | |
47a9a527 | 1175 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
b3b94faa | 1176 | |
5e687eac | 1177 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
3d3c10f2 BM |
1178 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
1179 | if (sdp->sd_args.ar_statfs_quantum) { | |
1180 | sdp->sd_tune.gt_statfs_slow = 0; | |
1181 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; | |
32e471ef | 1182 | } else { |
3d3c10f2 BM |
1183 | sdp->sd_tune.gt_statfs_slow = 1; |
1184 | sdp->sd_tune.gt_statfs_quantum = 30; | |
1185 | } | |
48c2b613 | 1186 | |
b3b94faa | 1187 | error = init_names(sdp, silent); |
c2a04b02 JI |
1188 | if (error) |
1189 | goto fail_free; | |
b3b94faa | 1190 | |
561b7969 | 1191 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s", sdp->sd_table_name); |
e0c2a9aa | 1192 | |
b3b94faa DT |
1193 | error = gfs2_sys_fs_add(sdp); |
1194 | if (error) | |
c2a04b02 | 1195 | goto fail_free; |
0d515210 BP |
1196 | |
1197 | gfs2_create_debugfs_file(sdp); | |
b3b94faa DT |
1198 | |
1199 | error = gfs2_lm_mount(sdp, silent); | |
1200 | if (error) | |
0d515210 | 1201 | goto fail_debug; |
b3b94faa DT |
1202 | |
1203 | error = init_locking(sdp, &mount_gh, DO); | |
1204 | if (error) | |
1205 | goto fail_lm; | |
1206 | ||
9b8df98f | 1207 | error = init_sb(sdp, silent); |
b3b94faa DT |
1208 | if (error) |
1209 | goto fail_locking; | |
b3b94faa | 1210 | |
47b7ec1d AP |
1211 | /* Turn rgrplvb on by default if fs format is recent enough */ |
1212 | if (!sdp->sd_args.ar_got_rgrplvb && sdp->sd_sb.sb_fs_format > 1801) | |
1213 | sdp->sd_args.ar_rgrplvb = 1; | |
1214 | ||
ba6e9364 SW |
1215 | error = wait_on_journal(sdp); |
1216 | if (error) | |
1217 | goto fail_sb; | |
1218 | ||
feb47ca9 SW |
1219 | /* |
1220 | * If user space has failed to join the cluster or some similar | |
1221 | * failure has occurred, then the journal id will contain a | |
1222 | * negative (error) number. This will then be returned to the | |
1223 | * caller (of the mount syscall). We do this even for spectator | |
1224 | * mounts (which just write a jid of 0 to indicate "ok" even though | |
1225 | * the jid is unused in the spectator case) | |
1226 | */ | |
1227 | if (sdp->sd_lockstruct.ls_jid < 0) { | |
1228 | error = sdp->sd_lockstruct.ls_jid; | |
1229 | sdp->sd_lockstruct.ls_jid = 0; | |
1230 | goto fail_sb; | |
1231 | } | |
1232 | ||
e0c2a9aa | 1233 | if (sdp->sd_args.ar_spectator) |
561b7969 | 1234 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.s", |
e0c2a9aa DT |
1235 | sdp->sd_table_name); |
1236 | else | |
561b7969 | 1237 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.%u", |
e0c2a9aa DT |
1238 | sdp->sd_table_name, sdp->sd_lockstruct.ls_jid); |
1239 | ||
b3b94faa DT |
1240 | error = init_inodes(sdp, DO); |
1241 | if (error) | |
f42faf4f | 1242 | goto fail_sb; |
b3b94faa DT |
1243 | |
1244 | error = init_per_node(sdp, DO); | |
1245 | if (error) | |
1246 | goto fail_inodes; | |
1247 | ||
1248 | error = gfs2_statfs_init(sdp); | |
1249 | if (error) { | |
1250 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1251 | goto fail_per_node; | |
1252 | } | |
1253 | ||
a28dc123 BP |
1254 | if (!sb_rdonly(sb)) { |
1255 | error = init_threads(sdp); | |
1256 | if (error) { | |
1257 | gfs2_withdraw_delayed(sdp); | |
1258 | goto fail_per_node; | |
1259 | } | |
1260 | } | |
1261 | ||
96b1454f BP |
1262 | error = gfs2_freeze_lock(sdp, &freeze_gh, 0); |
1263 | if (error) | |
1264 | goto fail_per_node; | |
b780cc61 | 1265 | |
96b1454f | 1266 | if (!sb_rdonly(sb)) |
b3b94faa | 1267 | error = gfs2_make_fs_rw(sdp); |
b3b94faa | 1268 | |
96b1454f BP |
1269 | gfs2_freeze_unlock(&freeze_gh); |
1270 | if (error) { | |
a28dc123 BP |
1271 | if (sdp->sd_quotad_process) |
1272 | kthread_stop(sdp->sd_quotad_process); | |
1273 | sdp->sd_quotad_process = NULL; | |
1274 | if (sdp->sd_logd_process) | |
1275 | kthread_stop(sdp->sd_logd_process); | |
1276 | sdp->sd_logd_process = NULL; | |
96b1454f BP |
1277 | fs_err(sdp, "can't make FS RW: %d\n", error); |
1278 | goto fail_per_node; | |
1279 | } | |
b3b94faa | 1280 | gfs2_glock_dq_uninit(&mount_gh); |
8633ecfa | 1281 | gfs2_online_uevent(sdp); |
b3b94faa DT |
1282 | return 0; |
1283 | ||
a91ea69f | 1284 | fail_per_node: |
b3b94faa | 1285 | init_per_node(sdp, UNDO); |
a91ea69f | 1286 | fail_inodes: |
b3b94faa | 1287 | init_inodes(sdp, UNDO); |
a91ea69f | 1288 | fail_sb: |
9b8df98f SW |
1289 | if (sdp->sd_root_dir) |
1290 | dput(sdp->sd_root_dir); | |
1291 | if (sdp->sd_master_dir) | |
1292 | dput(sdp->sd_master_dir); | |
e7c8707e SW |
1293 | if (sb->s_root) |
1294 | dput(sb->s_root); | |
9b8df98f | 1295 | sb->s_root = NULL; |
a91ea69f | 1296 | fail_locking: |
b3b94faa | 1297 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1298 | fail_lm: |
0e48e055 | 1299 | complete_all(&sdp->sd_journal_ready); |
fefc03bf | 1300 | gfs2_gl_hash_clear(sdp); |
b3b94faa | 1301 | gfs2_lm_unmount(sdp); |
0d515210 | 1302 | fail_debug: |
5f882096 | 1303 | gfs2_delete_debugfs_file(sdp); |
0d515210 | 1304 | gfs2_sys_fs_del(sdp); |
c2a04b02 JI |
1305 | fail_free: |
1306 | free_sbd(sdp); | |
5c676f6d | 1307 | sb->s_fs_info = NULL; |
b3b94faa DT |
1308 | return error; |
1309 | } | |
1310 | ||
1f52aa08 AP |
1311 | /** |
1312 | * gfs2_get_tree - Get the GFS2 superblock and root directory | |
1313 | * @fc: The filesystem context | |
1314 | * | |
1315 | * Returns: 0 or -errno on error | |
1316 | */ | |
1317 | static int gfs2_get_tree(struct fs_context *fc) | |
b3b94faa | 1318 | { |
1f52aa08 AP |
1319 | struct gfs2_args *args = fc->fs_private; |
1320 | struct gfs2_sbd *sdp; | |
1321 | int error; | |
1322 | ||
1323 | error = get_tree_bdev(fc, gfs2_fill_super); | |
1324 | if (error) | |
1325 | return error; | |
1326 | ||
1327 | sdp = fc->root->d_sb->s_fs_info; | |
1328 | dput(fc->root); | |
1329 | if (args->ar_meta) | |
1330 | fc->root = dget(sdp->sd_master_dir); | |
1331 | else | |
1332 | fc->root = dget(sdp->sd_root_dir); | |
f55073ff | 1333 | return 0; |
86384605 AD |
1334 | } |
1335 | ||
1f52aa08 | 1336 | static void gfs2_fc_free(struct fs_context *fc) |
f6d03139 | 1337 | { |
1f52aa08 AP |
1338 | struct gfs2_args *args = fc->fs_private; |
1339 | ||
1340 | kfree(args); | |
f6d03139 SW |
1341 | } |
1342 | ||
1f52aa08 AP |
1343 | enum gfs2_param { |
1344 | Opt_lockproto, | |
1345 | Opt_locktable, | |
1346 | Opt_hostdata, | |
1347 | Opt_spectator, | |
1348 | Opt_ignore_local_fs, | |
1349 | Opt_localflocks, | |
1350 | Opt_localcaching, | |
1351 | Opt_debug, | |
1352 | Opt_upgrade, | |
1353 | Opt_acl, | |
1354 | Opt_quota, | |
48ce73b1 | 1355 | Opt_quota_flag, |
1f52aa08 AP |
1356 | Opt_suiddir, |
1357 | Opt_data, | |
1358 | Opt_meta, | |
1359 | Opt_discard, | |
1360 | Opt_commit, | |
1361 | Opt_errors, | |
1362 | Opt_statfs_quantum, | |
1363 | Opt_statfs_percent, | |
1364 | Opt_quota_quantum, | |
1365 | Opt_barrier, | |
1366 | Opt_rgrplvb, | |
1367 | Opt_loccookie, | |
1368 | }; | |
f55073ff | 1369 | |
5eede625 | 1370 | static const struct constant_table gfs2_param_quota[] = { |
48ce73b1 AV |
1371 | {"off", GFS2_QUOTA_OFF}, |
1372 | {"account", GFS2_QUOTA_ACCOUNT}, | |
1373 | {"on", GFS2_QUOTA_ON}, | |
2710c957 | 1374 | {} |
1f52aa08 | 1375 | }; |
f55073ff | 1376 | |
1f52aa08 AP |
1377 | enum opt_data { |
1378 | Opt_data_writeback = GFS2_DATA_WRITEBACK, | |
1379 | Opt_data_ordered = GFS2_DATA_ORDERED, | |
1380 | }; | |
f55073ff | 1381 | |
5eede625 | 1382 | static const struct constant_table gfs2_param_data[] = { |
2710c957 AV |
1383 | {"writeback", Opt_data_writeback }, |
1384 | {"ordered", Opt_data_ordered }, | |
1385 | {} | |
1386 | }; | |
1387 | ||
1f52aa08 AP |
1388 | enum opt_errors { |
1389 | Opt_errors_withdraw = GFS2_ERRORS_WITHDRAW, | |
1390 | Opt_errors_panic = GFS2_ERRORS_PANIC, | |
1391 | }; | |
f55073ff | 1392 | |
5eede625 | 1393 | static const struct constant_table gfs2_param_errors[] = { |
2710c957 AV |
1394 | {"withdraw", Opt_errors_withdraw }, |
1395 | {"panic", Opt_errors_panic }, | |
1396 | {} | |
1397 | }; | |
1398 | ||
d7167b14 | 1399 | static const struct fs_parameter_spec gfs2_fs_parameters[] = { |
1f52aa08 AP |
1400 | fsparam_string ("lockproto", Opt_lockproto), |
1401 | fsparam_string ("locktable", Opt_locktable), | |
1402 | fsparam_string ("hostdata", Opt_hostdata), | |
1403 | fsparam_flag ("spectator", Opt_spectator), | |
1404 | fsparam_flag ("norecovery", Opt_spectator), | |
1405 | fsparam_flag ("ignore_local_fs", Opt_ignore_local_fs), | |
1406 | fsparam_flag ("localflocks", Opt_localflocks), | |
1407 | fsparam_flag ("localcaching", Opt_localcaching), | |
1408 | fsparam_flag_no("debug", Opt_debug), | |
1409 | fsparam_flag ("upgrade", Opt_upgrade), | |
1410 | fsparam_flag_no("acl", Opt_acl), | |
1411 | fsparam_flag_no("suiddir", Opt_suiddir), | |
2710c957 | 1412 | fsparam_enum ("data", Opt_data, gfs2_param_data), |
1f52aa08 AP |
1413 | fsparam_flag ("meta", Opt_meta), |
1414 | fsparam_flag_no("discard", Opt_discard), | |
1415 | fsparam_s32 ("commit", Opt_commit), | |
2710c957 | 1416 | fsparam_enum ("errors", Opt_errors, gfs2_param_errors), |
1f52aa08 AP |
1417 | fsparam_s32 ("statfs_quantum", Opt_statfs_quantum), |
1418 | fsparam_s32 ("statfs_percent", Opt_statfs_percent), | |
1419 | fsparam_s32 ("quota_quantum", Opt_quota_quantum), | |
1420 | fsparam_flag_no("barrier", Opt_barrier), | |
1421 | fsparam_flag_no("rgrplvb", Opt_rgrplvb), | |
1422 | fsparam_flag_no("loccookie", Opt_loccookie), | |
1423 | /* quota can be a flag or an enum so it gets special treatment */ | |
48ce73b1 AV |
1424 | fsparam_flag_no("quota", Opt_quota_flag), |
1425 | fsparam_enum("quota", Opt_quota, gfs2_param_quota), | |
1f52aa08 AP |
1426 | {} |
1427 | }; | |
f55073ff | 1428 | |
1f52aa08 AP |
1429 | /* Parse a single mount parameter */ |
1430 | static int gfs2_parse_param(struct fs_context *fc, struct fs_parameter *param) | |
1431 | { | |
1432 | struct gfs2_args *args = fc->fs_private; | |
1433 | struct fs_parse_result result; | |
1434 | int o; | |
1435 | ||
d7167b14 | 1436 | o = fs_parse(fc, gfs2_fs_parameters, param, &result); |
1f52aa08 AP |
1437 | if (o < 0) |
1438 | return o; | |
1439 | ||
1440 | switch (o) { | |
1441 | case Opt_lockproto: | |
1442 | strlcpy(args->ar_lockproto, param->string, GFS2_LOCKNAME_LEN); | |
1443 | break; | |
1444 | case Opt_locktable: | |
1445 | strlcpy(args->ar_locktable, param->string, GFS2_LOCKNAME_LEN); | |
1446 | break; | |
1447 | case Opt_hostdata: | |
1448 | strlcpy(args->ar_hostdata, param->string, GFS2_LOCKNAME_LEN); | |
1449 | break; | |
1450 | case Opt_spectator: | |
1451 | args->ar_spectator = 1; | |
1452 | break; | |
1453 | case Opt_ignore_local_fs: | |
1454 | /* Retained for backwards compat only */ | |
1455 | break; | |
1456 | case Opt_localflocks: | |
1457 | args->ar_localflocks = 1; | |
1458 | break; | |
1459 | case Opt_localcaching: | |
1460 | /* Retained for backwards compat only */ | |
1461 | break; | |
1462 | case Opt_debug: | |
1463 | if (result.boolean && args->ar_errors == GFS2_ERRORS_PANIC) | |
77cb271e | 1464 | return invalfc(fc, "-o debug and -o errors=panic are mutually exclusive"); |
1f52aa08 AP |
1465 | args->ar_debug = result.boolean; |
1466 | break; | |
1467 | case Opt_upgrade: | |
1468 | /* Retained for backwards compat only */ | |
1469 | break; | |
1470 | case Opt_acl: | |
1471 | args->ar_posix_acl = result.boolean; | |
1472 | break; | |
48ce73b1 AV |
1473 | case Opt_quota_flag: |
1474 | args->ar_quota = result.negated ? GFS2_QUOTA_OFF : GFS2_QUOTA_ON; | |
1475 | break; | |
1f52aa08 | 1476 | case Opt_quota: |
48ce73b1 | 1477 | args->ar_quota = result.int_32; |
1f52aa08 AP |
1478 | break; |
1479 | case Opt_suiddir: | |
1480 | args->ar_suiddir = result.boolean; | |
1481 | break; | |
1482 | case Opt_data: | |
1483 | /* The uint_32 result maps directly to GFS2_DATA_* */ | |
1484 | args->ar_data = result.uint_32; | |
1485 | break; | |
1486 | case Opt_meta: | |
1487 | args->ar_meta = 1; | |
1488 | break; | |
1489 | case Opt_discard: | |
1490 | args->ar_discard = result.boolean; | |
1491 | break; | |
1492 | case Opt_commit: | |
1493 | if (result.int_32 <= 0) | |
77cb271e | 1494 | return invalfc(fc, "commit mount option requires a positive numeric argument"); |
1f52aa08 AP |
1495 | args->ar_commit = result.int_32; |
1496 | break; | |
1497 | case Opt_statfs_quantum: | |
1498 | if (result.int_32 < 0) | |
77cb271e | 1499 | return invalfc(fc, "statfs_quantum mount option requires a non-negative numeric argument"); |
1f52aa08 AP |
1500 | args->ar_statfs_quantum = result.int_32; |
1501 | break; | |
1502 | case Opt_quota_quantum: | |
1503 | if (result.int_32 <= 0) | |
77cb271e | 1504 | return invalfc(fc, "quota_quantum mount option requires a positive numeric argument"); |
1f52aa08 AP |
1505 | args->ar_quota_quantum = result.int_32; |
1506 | break; | |
1507 | case Opt_statfs_percent: | |
1508 | if (result.int_32 < 0 || result.int_32 > 100) | |
77cb271e | 1509 | return invalfc(fc, "statfs_percent mount option requires a numeric argument between 0 and 100"); |
1f52aa08 AP |
1510 | args->ar_statfs_percent = result.int_32; |
1511 | break; | |
1512 | case Opt_errors: | |
1513 | if (args->ar_debug && result.uint_32 == GFS2_ERRORS_PANIC) | |
77cb271e | 1514 | return invalfc(fc, "-o debug and -o errors=panic are mutually exclusive"); |
1f52aa08 AP |
1515 | args->ar_errors = result.uint_32; |
1516 | break; | |
1517 | case Opt_barrier: | |
1518 | args->ar_nobarrier = result.boolean; | |
1519 | break; | |
1520 | case Opt_rgrplvb: | |
1521 | args->ar_rgrplvb = result.boolean; | |
47b7ec1d | 1522 | args->ar_got_rgrplvb = 1; |
1f52aa08 AP |
1523 | break; |
1524 | case Opt_loccookie: | |
1525 | args->ar_loccookie = result.boolean; | |
1526 | break; | |
1527 | default: | |
77cb271e | 1528 | return invalfc(fc, "invalid mount option: %s", param->key); |
f55073ff | 1529 | } |
1f52aa08 AP |
1530 | return 0; |
1531 | } | |
f55073ff | 1532 | |
1f52aa08 AP |
1533 | static int gfs2_reconfigure(struct fs_context *fc) |
1534 | { | |
1535 | struct super_block *sb = fc->root->d_sb; | |
1536 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1537 | struct gfs2_args *oldargs = &sdp->sd_args; | |
1538 | struct gfs2_args *newargs = fc->fs_private; | |
1539 | struct gfs2_tune *gt = &sdp->sd_tune; | |
1540 | int error = 0; | |
1541 | ||
1542 | sync_filesystem(sb); | |
1543 | ||
1544 | spin_lock(>->gt_spin); | |
1545 | oldargs->ar_commit = gt->gt_logd_secs; | |
1546 | oldargs->ar_quota_quantum = gt->gt_quota_quantum; | |
1547 | if (gt->gt_statfs_slow) | |
1548 | oldargs->ar_statfs_quantum = 0; | |
1549 | else | |
1550 | oldargs->ar_statfs_quantum = gt->gt_statfs_quantum; | |
1551 | spin_unlock(>->gt_spin); | |
1552 | ||
1553 | if (strcmp(newargs->ar_lockproto, oldargs->ar_lockproto)) { | |
77cb271e | 1554 | errorfc(fc, "reconfiguration of locking protocol not allowed"); |
1f52aa08 AP |
1555 | return -EINVAL; |
1556 | } | |
1557 | if (strcmp(newargs->ar_locktable, oldargs->ar_locktable)) { | |
77cb271e | 1558 | errorfc(fc, "reconfiguration of lock table not allowed"); |
1f52aa08 AP |
1559 | return -EINVAL; |
1560 | } | |
1561 | if (strcmp(newargs->ar_hostdata, oldargs->ar_hostdata)) { | |
77cb271e | 1562 | errorfc(fc, "reconfiguration of host data not allowed"); |
1f52aa08 AP |
1563 | return -EINVAL; |
1564 | } | |
1565 | if (newargs->ar_spectator != oldargs->ar_spectator) { | |
77cb271e | 1566 | errorfc(fc, "reconfiguration of spectator mode not allowed"); |
1f52aa08 AP |
1567 | return -EINVAL; |
1568 | } | |
1569 | if (newargs->ar_localflocks != oldargs->ar_localflocks) { | |
77cb271e | 1570 | errorfc(fc, "reconfiguration of localflocks not allowed"); |
1f52aa08 AP |
1571 | return -EINVAL; |
1572 | } | |
1573 | if (newargs->ar_meta != oldargs->ar_meta) { | |
77cb271e | 1574 | errorfc(fc, "switching between gfs2 and gfs2meta not allowed"); |
1f52aa08 AP |
1575 | return -EINVAL; |
1576 | } | |
1577 | if (oldargs->ar_spectator) | |
1578 | fc->sb_flags |= SB_RDONLY; | |
1579 | ||
1580 | if ((sb->s_flags ^ fc->sb_flags) & SB_RDONLY) { | |
96b1454f BP |
1581 | struct gfs2_holder freeze_gh; |
1582 | ||
1583 | error = gfs2_freeze_lock(sdp, &freeze_gh, 0); | |
1584 | if (error) | |
1585 | return -EINVAL; | |
1586 | ||
1f52aa08 | 1587 | if (fc->sb_flags & SB_RDONLY) { |
eb602521 | 1588 | gfs2_make_fs_ro(sdp); |
1f52aa08 AP |
1589 | } else { |
1590 | error = gfs2_make_fs_rw(sdp); | |
1591 | if (error) | |
77cb271e | 1592 | errorfc(fc, "unable to remount read-write"); |
1f52aa08 | 1593 | } |
96b1454f | 1594 | gfs2_freeze_unlock(&freeze_gh); |
f55073ff | 1595 | } |
1f52aa08 | 1596 | sdp->sd_args = *newargs; |
f55073ff | 1597 | |
1f52aa08 AP |
1598 | if (sdp->sd_args.ar_posix_acl) |
1599 | sb->s_flags |= SB_POSIXACL; | |
1600 | else | |
1601 | sb->s_flags &= ~SB_POSIXACL; | |
1602 | if (sdp->sd_args.ar_nobarrier) | |
1603 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
f55073ff | 1604 | else |
1f52aa08 AP |
1605 | clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); |
1606 | spin_lock(>->gt_spin); | |
1607 | gt->gt_logd_secs = newargs->ar_commit; | |
1608 | gt->gt_quota_quantum = newargs->ar_quota_quantum; | |
1609 | if (newargs->ar_statfs_quantum) { | |
1610 | gt->gt_statfs_slow = 0; | |
1611 | gt->gt_statfs_quantum = newargs->ar_statfs_quantum; | |
1612 | } | |
1613 | else { | |
1614 | gt->gt_statfs_slow = 1; | |
1615 | gt->gt_statfs_quantum = 30; | |
1616 | } | |
1617 | spin_unlock(>->gt_spin); | |
1618 | ||
1619 | gfs2_online_uevent(sdp); | |
1620 | return error; | |
1621 | } | |
1622 | ||
1623 | static const struct fs_context_operations gfs2_context_ops = { | |
1624 | .free = gfs2_fc_free, | |
1625 | .parse_param = gfs2_parse_param, | |
1626 | .get_tree = gfs2_get_tree, | |
1627 | .reconfigure = gfs2_reconfigure, | |
1628 | }; | |
1629 | ||
1630 | /* Set up the filesystem mount context */ | |
1631 | static int gfs2_init_fs_context(struct fs_context *fc) | |
1632 | { | |
1633 | struct gfs2_args *args; | |
1634 | ||
d5798141 | 1635 | args = kmalloc(sizeof(*args), GFP_KERNEL); |
1f52aa08 AP |
1636 | if (args == NULL) |
1637 | return -ENOMEM; | |
1638 | ||
d5798141 AP |
1639 | if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) { |
1640 | struct gfs2_sbd *sdp = fc->root->d_sb->s_fs_info; | |
1f52aa08 | 1641 | |
d5798141 AP |
1642 | *args = sdp->sd_args; |
1643 | } else { | |
1644 | memset(args, 0, sizeof(*args)); | |
1645 | args->ar_quota = GFS2_QUOTA_DEFAULT; | |
1646 | args->ar_data = GFS2_DATA_DEFAULT; | |
1647 | args->ar_commit = 30; | |
1648 | args->ar_statfs_quantum = 30; | |
1649 | args->ar_quota_quantum = 60; | |
1650 | args->ar_errors = GFS2_ERRORS_DEFAULT; | |
1651 | } | |
1f52aa08 AP |
1652 | fc->fs_private = args; |
1653 | fc->ops = &gfs2_context_ops; | |
1654 | return 0; | |
f55073ff SW |
1655 | } |
1656 | ||
1f52aa08 | 1657 | static int set_meta_super(struct super_block *s, struct fs_context *fc) |
f6d03139 SW |
1658 | { |
1659 | return -EINVAL; | |
1660 | } | |
1661 | ||
1f52aa08 AP |
1662 | static int test_meta_super(struct super_block *s, struct fs_context *fc) |
1663 | { | |
1664 | return (fc->sget_key == s->s_bdev); | |
1665 | } | |
1666 | ||
1667 | static int gfs2_meta_get_tree(struct fs_context *fc) | |
86384605 | 1668 | { |
f6d03139 | 1669 | struct super_block *s; |
003dec89 | 1670 | struct gfs2_sbd *sdp; |
e24977d4 | 1671 | struct path path; |
86384605 | 1672 | int error; |
907b9bce | 1673 | |
1f52aa08 AP |
1674 | if (!fc->source || !*fc->source) |
1675 | return -EINVAL; | |
3df629d8 | 1676 | |
1f52aa08 | 1677 | error = kern_path(fc->source, LOOKUP_FOLLOW, &path); |
86384605 | 1678 | if (error) { |
d77d1b58 | 1679 | pr_warn("path_lookup on %s returned error %d\n", |
1f52aa08 AP |
1680 | fc->source, error); |
1681 | return error; | |
86384605 | 1682 | } |
1f52aa08 AP |
1683 | fc->fs_type = &gfs2_fs_type; |
1684 | fc->sget_key = path.dentry->d_sb->s_bdev; | |
1685 | s = sget_fc(fc, test_meta_super, set_meta_super); | |
e24977d4 | 1686 | path_put(&path); |
f6d03139 | 1687 | if (IS_ERR(s)) { |
d77d1b58 | 1688 | pr_warn("gfs2 mount does not exist\n"); |
1f52aa08 | 1689 | return PTR_ERR(s); |
86384605 | 1690 | } |
1f52aa08 | 1691 | if ((fc->sb_flags ^ s->s_flags) & SB_RDONLY) { |
f55073ff | 1692 | deactivate_locked_super(s); |
1f52aa08 | 1693 | return -EBUSY; |
f55073ff | 1694 | } |
f6d03139 | 1695 | sdp = s->s_fs_info; |
1f52aa08 AP |
1696 | fc->root = dget(sdp->sd_master_dir); |
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | static const struct fs_context_operations gfs2_meta_context_ops = { | |
30aecae8 | 1701 | .free = gfs2_fc_free, |
1f52aa08 AP |
1702 | .get_tree = gfs2_meta_get_tree, |
1703 | }; | |
1704 | ||
1705 | static int gfs2_meta_init_fs_context(struct fs_context *fc) | |
1706 | { | |
1707 | int ret = gfs2_init_fs_context(fc); | |
1708 | ||
1709 | if (ret) | |
1710 | return ret; | |
1711 | ||
1712 | fc->ops = &gfs2_meta_context_ops; | |
1713 | return 0; | |
b3b94faa DT |
1714 | } |
1715 | ||
419c93e0 | 1716 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1717 | { |
1718 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
88a19ad0 SW |
1719 | |
1720 | if (sdp == NULL) { | |
1721 | kill_block_super(sb); | |
1722 | return; | |
3af165ac | 1723 | } |
88a19ad0 | 1724 | |
805c0907 | 1725 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SYNC | GFS2_LFC_KILL_SB); |
88a19ad0 SW |
1726 | dput(sdp->sd_root_dir); |
1727 | dput(sdp->sd_master_dir); | |
1728 | sdp->sd_root_dir = NULL; | |
1729 | sdp->sd_master_dir = NULL; | |
fefc03bf | 1730 | shrink_dcache_sb(sb); |
0d515210 | 1731 | kill_block_super(sb); |
86384605 AD |
1732 | } |
1733 | ||
b3b94faa DT |
1734 | struct file_system_type gfs2_fs_type = { |
1735 | .name = "gfs2", | |
1736 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1737 | .init_fs_context = gfs2_init_fs_context, |
d7167b14 | 1738 | .parameters = gfs2_fs_parameters, |
419c93e0 SW |
1739 | .kill_sb = gfs2_kill_sb, |
1740 | .owner = THIS_MODULE, | |
1741 | }; | |
7f78e035 | 1742 | MODULE_ALIAS_FS("gfs2"); |
419c93e0 SW |
1743 | |
1744 | struct file_system_type gfs2meta_fs_type = { | |
1745 | .name = "gfs2meta", | |
1746 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1747 | .init_fs_context = gfs2_meta_init_fs_context, |
b3b94faa DT |
1748 | .owner = THIS_MODULE, |
1749 | }; | |
7f78e035 | 1750 | MODULE_ALIAS_FS("gfs2meta"); |