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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); |
813e0c46 SW |
109 | INIT_LIST_HEAD(&sdp->sd_trunc_list); |
110 | spin_lock_init(&sdp->sd_trunc_lock); | |
2d9e7230 | 111 | spin_lock_init(&sdp->sd_bitmap_lock); |
b3b94faa | 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 | 136 | atomic_set(&sdp->sd_log_in_flight, 0); |
2e60d768 BM |
137 | atomic_set(&sdp->sd_reserving_log, 0); |
138 | init_waitqueue_head(&sdp->sd_reserving_log_wait); | |
16615be1 | 139 | init_waitqueue_head(&sdp->sd_log_flush_wait); |
2e60d768 BM |
140 | atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN); |
141 | mutex_init(&sdp->sd_freeze_mutex); | |
b3b94faa | 142 | |
b3b94faa | 143 | return sdp; |
b3b94faa | 144 | |
2a27b755 AG |
145 | fail: |
146 | free_sbd(sdp); | |
147 | return NULL; | |
148 | } | |
b3b94faa | 149 | |
9b8df98f SW |
150 | /** |
151 | * gfs2_check_sb - Check superblock | |
152 | * @sdp: the filesystem | |
153 | * @sb: The superblock | |
154 | * @silent: Don't print a message if the check fails | |
155 | * | |
156 | * Checks the version code of the FS is one that we understand how to | |
157 | * read and that the sizes of the various on-disk structures have not | |
158 | * changed. | |
159 | */ | |
160 | ||
32e471ef | 161 | static int gfs2_check_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f | 162 | { |
32e471ef SW |
163 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
164 | ||
9b8df98f SW |
165 | if (sb->sb_magic != GFS2_MAGIC || |
166 | sb->sb_type != GFS2_METATYPE_SB) { | |
167 | if (!silent) | |
d77d1b58 | 168 | pr_warn("not a GFS2 filesystem\n"); |
9b8df98f SW |
169 | return -EINVAL; |
170 | } | |
171 | ||
172 | /* If format numbers match exactly, we're done. */ | |
173 | ||
174 | if (sb->sb_fs_format == GFS2_FORMAT_FS && | |
175 | sb->sb_multihost_format == GFS2_FORMAT_MULTI) | |
176 | return 0; | |
177 | ||
c80dbb58 | 178 | fs_warn(sdp, "Unknown on-disk format, unable to mount\n"); |
9b8df98f | 179 | |
c80dbb58 | 180 | return -EINVAL; |
9b8df98f SW |
181 | } |
182 | ||
4246a0b6 | 183 | static void end_bio_io_page(struct bio *bio) |
9b8df98f SW |
184 | { |
185 | struct page *page = bio->bi_private; | |
186 | ||
4e4cbee9 | 187 | if (!bio->bi_status) |
9b8df98f SW |
188 | SetPageUptodate(page); |
189 | else | |
4e4cbee9 | 190 | pr_warn("error %d reading superblock\n", bio->bi_status); |
9b8df98f SW |
191 | unlock_page(page); |
192 | } | |
193 | ||
32e471ef | 194 | static void gfs2_sb_in(struct gfs2_sbd *sdp, const void *buf) |
9b8df98f | 195 | { |
32e471ef SW |
196 | struct gfs2_sb_host *sb = &sdp->sd_sb; |
197 | struct super_block *s = sdp->sd_vfs; | |
9b8df98f SW |
198 | const struct gfs2_sb *str = buf; |
199 | ||
200 | sb->sb_magic = be32_to_cpu(str->sb_header.mh_magic); | |
201 | sb->sb_type = be32_to_cpu(str->sb_header.mh_type); | |
202 | sb->sb_format = be32_to_cpu(str->sb_header.mh_format); | |
203 | sb->sb_fs_format = be32_to_cpu(str->sb_fs_format); | |
204 | sb->sb_multihost_format = be32_to_cpu(str->sb_multihost_format); | |
205 | sb->sb_bsize = be32_to_cpu(str->sb_bsize); | |
206 | sb->sb_bsize_shift = be32_to_cpu(str->sb_bsize_shift); | |
207 | sb->sb_master_dir.no_addr = be64_to_cpu(str->sb_master_dir.no_addr); | |
208 | sb->sb_master_dir.no_formal_ino = be64_to_cpu(str->sb_master_dir.no_formal_ino); | |
209 | sb->sb_root_dir.no_addr = be64_to_cpu(str->sb_root_dir.no_addr); | |
210 | sb->sb_root_dir.no_formal_ino = be64_to_cpu(str->sb_root_dir.no_formal_ino); | |
211 | ||
212 | memcpy(sb->sb_lockproto, str->sb_lockproto, GFS2_LOCKNAME_LEN); | |
213 | memcpy(sb->sb_locktable, str->sb_locktable, GFS2_LOCKNAME_LEN); | |
85787090 | 214 | memcpy(&s->s_uuid, str->sb_uuid, 16); |
9b8df98f SW |
215 | } |
216 | ||
217 | /** | |
218 | * gfs2_read_super - Read the gfs2 super block from disk | |
219 | * @sdp: The GFS2 super block | |
220 | * @sector: The location of the super block | |
221 | * @error: The error code to return | |
222 | * | |
223 | * This uses the bio functions to read the super block from disk | |
224 | * because we want to be 100% sure that we never read cached data. | |
225 | * A super block is read twice only during each GFS2 mount and is | |
226 | * never written to by the filesystem. The first time its read no | |
227 | * locks are held, and the only details which are looked at are those | |
228 | * relating to the locking protocol. Once locking is up and working, | |
229 | * the sb is read again under the lock to establish the location of | |
230 | * the master directory (contains pointers to journals etc) and the | |
231 | * root directory. | |
232 | * | |
233 | * Returns: 0 on success or error | |
234 | */ | |
235 | ||
32e471ef | 236 | static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent) |
9b8df98f SW |
237 | { |
238 | struct super_block *sb = sdp->sd_vfs; | |
239 | struct gfs2_sb *p; | |
240 | struct page *page; | |
241 | struct bio *bio; | |
242 | ||
243 | page = alloc_page(GFP_NOFS); | |
244 | if (unlikely(!page)) | |
ac3beb6a | 245 | return -ENOMEM; |
9b8df98f SW |
246 | |
247 | ClearPageUptodate(page); | |
248 | ClearPageDirty(page); | |
249 | lock_page(page); | |
250 | ||
251 | bio = bio_alloc(GFP_NOFS, 1); | |
4f024f37 | 252 | bio->bi_iter.bi_sector = sector * (sb->s_blocksize >> 9); |
74d46992 | 253 | bio_set_dev(bio, sb->s_bdev); |
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; | |
70fd7614 | 258 | bio_set_op_attrs(bio, REQ_OP_READ, REQ_META); |
4e49ea4a | 259 | submit_bio(bio); |
9b8df98f SW |
260 | wait_on_page_locked(page); |
261 | bio_put(bio); | |
262 | if (!PageUptodate(page)) { | |
263 | __free_page(page); | |
264 | return -EIO; | |
265 | } | |
266 | p = kmap(page); | |
32e471ef | 267 | gfs2_sb_in(sdp, p); |
9b8df98f SW |
268 | kunmap(page); |
269 | __free_page(page); | |
32e471ef | 270 | return gfs2_check_sb(sdp, silent); |
9b8df98f | 271 | } |
6bac243f | 272 | |
9b8df98f SW |
273 | /** |
274 | * gfs2_read_sb - Read super block | |
275 | * @sdp: The GFS2 superblock | |
9b8df98f SW |
276 | * @silent: Don't print message if mount fails |
277 | * | |
278 | */ | |
279 | ||
6bac243f | 280 | static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent) |
9b8df98f SW |
281 | { |
282 | u32 hash_blocks, ind_blocks, leaf_blocks; | |
283 | u32 tmp_blocks; | |
284 | unsigned int x; | |
285 | int error; | |
286 | ||
32e471ef | 287 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
9b8df98f SW |
288 | if (error) { |
289 | if (!silent) | |
290 | fs_err(sdp, "can't read superblock\n"); | |
291 | return error; | |
292 | } | |
293 | ||
9b8df98f SW |
294 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - |
295 | GFS2_BASIC_BLOCK_SHIFT; | |
47a9a527 | 296 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
9b8df98f SW |
297 | sdp->sd_diptrs = (sdp->sd_sb.sb_bsize - |
298 | sizeof(struct gfs2_dinode)) / sizeof(u64); | |
299 | sdp->sd_inptrs = (sdp->sd_sb.sb_bsize - | |
300 | sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
2e9eeaa1 BP |
301 | sdp->sd_ldptrs = (sdp->sd_sb.sb_bsize - |
302 | sizeof(struct gfs2_log_descriptor)) / sizeof(u64); | |
9b8df98f SW |
303 | sdp->sd_jbsize = sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header); |
304 | sdp->sd_hash_bsize = sdp->sd_sb.sb_bsize / 2; | |
305 | sdp->sd_hash_bsize_shift = sdp->sd_sb.sb_bsize_shift - 1; | |
306 | sdp->sd_hash_ptrs = sdp->sd_hash_bsize / sizeof(u64); | |
307 | sdp->sd_qc_per_block = (sdp->sd_sb.sb_bsize - | |
308 | sizeof(struct gfs2_meta_header)) / | |
309 | sizeof(struct gfs2_quota_change); | |
a68a0a35 BP |
310 | sdp->sd_blocks_per_bitmap = (sdp->sd_sb.sb_bsize - |
311 | sizeof(struct gfs2_meta_header)) | |
312 | * GFS2_NBBY; /* not the rgrp bitmap, subsequent bitmaps only */ | |
9b8df98f SW |
313 | |
314 | /* Compute maximum reservation required to add a entry to a directory */ | |
315 | ||
47a9a527 | 316 | hash_blocks = DIV_ROUND_UP(sizeof(u64) * BIT(GFS2_DIR_MAX_DEPTH), |
9b8df98f SW |
317 | sdp->sd_jbsize); |
318 | ||
319 | ind_blocks = 0; | |
320 | for (tmp_blocks = hash_blocks; tmp_blocks > sdp->sd_diptrs;) { | |
321 | tmp_blocks = DIV_ROUND_UP(tmp_blocks, sdp->sd_inptrs); | |
322 | ind_blocks += tmp_blocks; | |
323 | } | |
324 | ||
325 | leaf_blocks = 2 + GFS2_DIR_MAX_DEPTH; | |
326 | ||
327 | sdp->sd_max_dirres = hash_blocks + ind_blocks + leaf_blocks; | |
328 | ||
329 | sdp->sd_heightsize[0] = sdp->sd_sb.sb_bsize - | |
330 | sizeof(struct gfs2_dinode); | |
331 | sdp->sd_heightsize[1] = sdp->sd_sb.sb_bsize * sdp->sd_diptrs; | |
332 | for (x = 2;; x++) { | |
333 | u64 space, d; | |
334 | u32 m; | |
335 | ||
336 | space = sdp->sd_heightsize[x - 1] * sdp->sd_inptrs; | |
337 | d = space; | |
338 | m = do_div(d, sdp->sd_inptrs); | |
339 | ||
340 | if (d != sdp->sd_heightsize[x - 1] || m) | |
341 | break; | |
342 | sdp->sd_heightsize[x] = space; | |
343 | } | |
344 | sdp->sd_max_height = x; | |
345 | sdp->sd_heightsize[x] = ~0; | |
346 | gfs2_assert(sdp, sdp->sd_max_height <= GFS2_MAX_META_HEIGHT); | |
347 | ||
471f3db2 BM |
348 | sdp->sd_max_dents_per_leaf = (sdp->sd_sb.sb_bsize - |
349 | sizeof(struct gfs2_leaf)) / | |
350 | GFS2_MIN_DIRENT_SIZE; | |
9b8df98f SW |
351 | return 0; |
352 | } | |
353 | ||
b3b94faa DT |
354 | static int init_names(struct gfs2_sbd *sdp, int silent) |
355 | { | |
b3b94faa DT |
356 | char *proto, *table; |
357 | int error = 0; | |
358 | ||
359 | proto = sdp->sd_args.ar_lockproto; | |
360 | table = sdp->sd_args.ar_locktable; | |
361 | ||
362 | /* Try to autodetect */ | |
363 | ||
364 | if (!proto[0] || !table[0]) { | |
32e471ef | 365 | error = gfs2_read_super(sdp, GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift, silent); |
bb8d8a6f SW |
366 | if (error) |
367 | return error; | |
3cf1e7be | 368 | |
b3b94faa | 369 | if (!proto[0]) |
3cf1e7be | 370 | proto = sdp->sd_sb.sb_lockproto; |
b3b94faa | 371 | if (!table[0]) |
3cf1e7be | 372 | table = sdp->sd_sb.sb_locktable; |
b3b94faa DT |
373 | } |
374 | ||
375 | if (!table[0]) | |
376 | table = sdp->sd_vfs->s_id; | |
377 | ||
00377d8e JD |
378 | strlcpy(sdp->sd_proto_name, proto, GFS2_FSNAME_LEN); |
379 | strlcpy(sdp->sd_table_name, table, GFS2_FSNAME_LEN); | |
b3b94faa | 380 | |
5d35e31f DC |
381 | table = sdp->sd_table_name; |
382 | while ((table = strchr(table, '/'))) | |
b35997d4 RP |
383 | *table = '_'; |
384 | ||
b3b94faa DT |
385 | return error; |
386 | } | |
387 | ||
388 | static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, | |
389 | int undo) | |
390 | { | |
b3b94faa DT |
391 | int error = 0; |
392 | ||
393 | if (undo) | |
394 | goto fail_trans; | |
395 | ||
b3b94faa DT |
396 | error = gfs2_glock_nq_num(sdp, |
397 | GFS2_MOUNT_LOCK, &gfs2_nondisk_glops, | |
398 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE, | |
399 | mount_gh); | |
400 | if (error) { | |
401 | fs_err(sdp, "can't acquire mount glock: %d\n", error); | |
402 | goto fail; | |
403 | } | |
404 | ||
405 | error = gfs2_glock_nq_num(sdp, | |
406 | GFS2_LIVE_LOCK, &gfs2_nondisk_glops, | |
407 | LM_ST_SHARED, | |
579b78a4 | 408 | LM_FLAG_NOEXP | GL_EXACT, |
b3b94faa DT |
409 | &sdp->sd_live_gh); |
410 | if (error) { | |
411 | fs_err(sdp, "can't acquire live glock: %d\n", error); | |
412 | goto fail_mount; | |
413 | } | |
414 | ||
415 | error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops, | |
416 | CREATE, &sdp->sd_rename_gl); | |
417 | if (error) { | |
418 | fs_err(sdp, "can't create rename glock: %d\n", error); | |
419 | goto fail_live; | |
420 | } | |
421 | ||
24972557 BM |
422 | error = gfs2_glock_get(sdp, GFS2_FREEZE_LOCK, &gfs2_freeze_glops, |
423 | CREATE, &sdp->sd_freeze_gl); | |
b3b94faa DT |
424 | if (error) { |
425 | fs_err(sdp, "can't create transaction glock: %d\n", error); | |
426 | goto fail_rename; | |
427 | } | |
b3b94faa DT |
428 | |
429 | return 0; | |
430 | ||
feaa7bba | 431 | fail_trans: |
24972557 | 432 | gfs2_glock_put(sdp->sd_freeze_gl); |
feaa7bba | 433 | fail_rename: |
b3b94faa | 434 | gfs2_glock_put(sdp->sd_rename_gl); |
feaa7bba | 435 | fail_live: |
b3b94faa | 436 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); |
feaa7bba | 437 | fail_mount: |
b3b94faa | 438 | gfs2_glock_dq_uninit(mount_gh); |
feaa7bba | 439 | fail: |
b3b94faa DT |
440 | return error; |
441 | } | |
442 | ||
9b8df98f SW |
443 | static int gfs2_lookup_root(struct super_block *sb, struct dentry **dptr, |
444 | u64 no_addr, const char *name) | |
f42faf4f | 445 | { |
9b8df98f SW |
446 | struct gfs2_sbd *sdp = sb->s_fs_info; |
447 | struct dentry *dentry; | |
448 | struct inode *inode; | |
449 | ||
3ce37b2c AG |
450 | inode = gfs2_inode_lookup(sb, DT_DIR, no_addr, 0, |
451 | GFS2_BLKST_FREE /* ignore */); | |
9b8df98f SW |
452 | if (IS_ERR(inode)) { |
453 | fs_err(sdp, "can't read in %s inode: %ld\n", name, PTR_ERR(inode)); | |
454 | return PTR_ERR(inode); | |
455 | } | |
48fde701 | 456 | dentry = d_make_root(inode); |
9b8df98f SW |
457 | if (!dentry) { |
458 | fs_err(sdp, "can't alloc %s dentry\n", name); | |
9b8df98f SW |
459 | return -ENOMEM; |
460 | } | |
9b8df98f SW |
461 | *dptr = dentry; |
462 | return 0; | |
f42faf4f SW |
463 | } |
464 | ||
9b8df98f | 465 | static int init_sb(struct gfs2_sbd *sdp, int silent) |
b3b94faa DT |
466 | { |
467 | struct super_block *sb = sdp->sd_vfs; | |
468 | struct gfs2_holder sb_gh; | |
dbb7cae2 | 469 | u64 no_addr; |
9b8df98f | 470 | int ret; |
b3b94faa | 471 | |
9b8df98f SW |
472 | ret = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops, |
473 | LM_ST_SHARED, 0, &sb_gh); | |
474 | if (ret) { | |
475 | fs_err(sdp, "can't acquire superblock glock: %d\n", ret); | |
476 | return ret; | |
b3b94faa | 477 | } |
907b9bce | 478 | |
6bac243f | 479 | ret = gfs2_read_sb(sdp, silent); |
9b8df98f SW |
480 | if (ret) { |
481 | fs_err(sdp, "can't read superblock: %d\n", ret); | |
b3b94faa DT |
482 | goto out; |
483 | } | |
484 | ||
485 | /* Set up the buffer cache and SB for real */ | |
e1defc4f | 486 | if (sdp->sd_sb.sb_bsize < bdev_logical_block_size(sb->s_bdev)) { |
9b8df98f | 487 | ret = -EINVAL; |
b3b94faa DT |
488 | fs_err(sdp, "FS block size (%u) is too small for device " |
489 | "block size (%u)\n", | |
e1defc4f | 490 | sdp->sd_sb.sb_bsize, bdev_logical_block_size(sb->s_bdev)); |
b3b94faa DT |
491 | goto out; |
492 | } | |
493 | if (sdp->sd_sb.sb_bsize > PAGE_SIZE) { | |
9b8df98f | 494 | ret = -EINVAL; |
b3b94faa DT |
495 | fs_err(sdp, "FS block size (%u) is too big for machine " |
496 | "page size (%u)\n", | |
497 | sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE); | |
498 | goto out; | |
499 | } | |
b3b94faa DT |
500 | sb_set_blocksize(sb, sdp->sd_sb.sb_bsize); |
501 | ||
f42faf4f | 502 | /* Get the root inode */ |
dbb7cae2 | 503 | no_addr = sdp->sd_sb.sb_root_dir.no_addr; |
9b8df98f SW |
504 | ret = gfs2_lookup_root(sb, &sdp->sd_root_dir, no_addr, "root"); |
505 | if (ret) | |
f42faf4f | 506 | goto out; |
b3b94faa | 507 | |
9b8df98f SW |
508 | /* Get the master inode */ |
509 | no_addr = sdp->sd_sb.sb_master_dir.no_addr; | |
510 | ret = gfs2_lookup_root(sb, &sdp->sd_master_dir, no_addr, "master"); | |
511 | if (ret) { | |
512 | dput(sdp->sd_root_dir); | |
513 | goto out; | |
514 | } | |
515 | sb->s_root = dget(sdp->sd_args.ar_meta ? sdp->sd_master_dir : sdp->sd_root_dir); | |
f42faf4f | 516 | out: |
b3b94faa | 517 | gfs2_glock_dq_uninit(&sb_gh); |
9b8df98f | 518 | return ret; |
b3b94faa DT |
519 | } |
520 | ||
f057f6cd | 521 | static void gfs2_others_may_mount(struct gfs2_sbd *sdp) |
da755fdb | 522 | { |
f057f6cd SW |
523 | char *message = "FIRSTMOUNT=Done"; |
524 | char *envp[] = { message, NULL }; | |
e0c2a9aa DT |
525 | |
526 | fs_info(sdp, "first mount done, others may mount\n"); | |
527 | ||
528 | if (sdp->sd_lockstruct.ls_ops->lm_first_done) | |
529 | sdp->sd_lockstruct.ls_ops->lm_first_done(sdp); | |
530 | ||
f057f6cd | 531 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_CHANGE, envp); |
da755fdb SW |
532 | } |
533 | ||
b5289681 SW |
534 | /** |
535 | * gfs2_jindex_hold - Grab a lock on the jindex | |
536 | * @sdp: The GFS2 superblock | |
537 | * @ji_gh: the holder for the jindex glock | |
538 | * | |
539 | * Returns: errno | |
540 | */ | |
541 | ||
542 | static int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh) | |
543 | { | |
544 | struct gfs2_inode *dip = GFS2_I(sdp->sd_jindex); | |
545 | struct qstr name; | |
546 | char buf[20]; | |
547 | struct gfs2_jdesc *jd; | |
548 | int error; | |
549 | ||
550 | name.name = buf; | |
551 | ||
552 | mutex_lock(&sdp->sd_jindex_mutex); | |
553 | ||
554 | for (;;) { | |
555 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); | |
556 | if (error) | |
557 | break; | |
558 | ||
559 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); | |
560 | name.hash = gfs2_disk_hash(name.name, name.len); | |
561 | ||
562 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); | |
563 | if (error == -ENOENT) { | |
564 | error = 0; | |
565 | break; | |
566 | } | |
567 | ||
568 | gfs2_glock_dq_uninit(ji_gh); | |
569 | ||
570 | if (error) | |
571 | break; | |
572 | ||
573 | error = -ENOMEM; | |
574 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); | |
575 | if (!jd) | |
576 | break; | |
577 | ||
578 | INIT_LIST_HEAD(&jd->extent_list); | |
a17d758b BP |
579 | INIT_LIST_HEAD(&jd->jd_revoke_list); |
580 | ||
6ecd7c2d | 581 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
b5289681 | 582 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
15a798f7 | 583 | if (IS_ERR_OR_NULL(jd->jd_inode)) { |
b5289681 SW |
584 | if (!jd->jd_inode) |
585 | error = -ENOENT; | |
586 | else | |
587 | error = PTR_ERR(jd->jd_inode); | |
588 | kfree(jd); | |
589 | break; | |
590 | } | |
591 | ||
592 | spin_lock(&sdp->sd_jindex_spin); | |
593 | jd->jd_jid = sdp->sd_journals++; | |
594 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); | |
595 | spin_unlock(&sdp->sd_jindex_spin); | |
596 | } | |
597 | ||
598 | mutex_unlock(&sdp->sd_jindex_mutex); | |
599 | ||
600 | return error; | |
601 | } | |
1d12d175 | 602 | |
b3b94faa DT |
603 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
604 | { | |
2b0143b5 | 605 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa | 606 | struct gfs2_holder ji_gh; |
5c676f6d | 607 | struct gfs2_inode *ip; |
b3b94faa DT |
608 | int jindex = 1; |
609 | int error = 0; | |
610 | ||
611 | if (undo) { | |
612 | jindex = 0; | |
fe64d517 | 613 | goto fail_jinode_gh; |
b3b94faa DT |
614 | } |
615 | ||
9b8df98f | 616 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
c752666c | 617 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 618 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 619 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 620 | } |
b3b94faa DT |
621 | |
622 | /* Load in the journal index special file */ | |
623 | ||
624 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
625 | if (error) { | |
626 | fs_err(sdp, "can't read journal index: %d\n", error); | |
627 | goto fail; | |
628 | } | |
629 | ||
0e5a9fb0 | 630 | error = -EUSERS; |
b3b94faa DT |
631 | if (!gfs2_jindex_size(sdp)) { |
632 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 633 | goto fail_jindex; |
b3b94faa DT |
634 | } |
635 | ||
f07b3520 | 636 | atomic_set(&sdp->sd_log_blks_needed, 0); |
b3b94faa DT |
637 | if (sdp->sd_args.ar_spectator) { |
638 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 639 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
640 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
641 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
b3b94faa DT |
642 | } else { |
643 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
644 | fs_err(sdp, "can't mount journal #%u\n", | |
645 | sdp->sd_lockstruct.ls_jid); | |
646 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
647 | gfs2_jindex_size(sdp), | |
648 | gfs2_jindex_size(sdp) - 1); | |
649 | goto fail_jindex; | |
650 | } | |
651 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
652 | ||
feaa7bba | 653 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa DT |
654 | &gfs2_journal_glops, |
655 | LM_ST_EXCLUSIVE, LM_FLAG_NOEXP, | |
656 | &sdp->sd_journal_gh); | |
657 | if (error) { | |
658 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
659 | goto fail_jindex; | |
660 | } | |
661 | ||
feaa7bba SW |
662 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
663 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, | |
75be73a8 | 664 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
665 | &sdp->sd_jinode_gh); |
666 | if (error) { | |
667 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
668 | error); | |
669 | goto fail_journal_gh; | |
670 | } | |
671 | ||
672 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
673 | if (error) { | |
674 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
675 | sdp->sd_jdesc->jd_jid, error); | |
676 | goto fail_jinode_gh; | |
677 | } | |
fd041f0b | 678 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
679 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
680 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
da6dd40d BP |
681 | |
682 | /* Map the extents for this journal's blocks */ | |
b50f227b | 683 | gfs2_map_journal_extents(sdp, sdp->sd_jdesc); |
b3b94faa | 684 | } |
63997775 | 685 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
b3b94faa DT |
686 | |
687 | if (sdp->sd_lockstruct.ls_first) { | |
688 | unsigned int x; | |
689 | for (x = 0; x < sdp->sd_journals; x++) { | |
1d12d175 BP |
690 | struct gfs2_jdesc *jd = gfs2_jdesc_find(sdp, x); |
691 | ||
692 | if (sdp->sd_args.ar_spectator) { | |
693 | error = check_journal_clean(sdp, jd); | |
694 | if (error) | |
695 | goto fail_jinode_gh; | |
696 | continue; | |
697 | } | |
698 | error = gfs2_recover_journal(jd, true); | |
b3b94faa DT |
699 | if (error) { |
700 | fs_err(sdp, "error recovering journal %u: %d\n", | |
701 | x, error); | |
702 | goto fail_jinode_gh; | |
703 | } | |
704 | } | |
705 | ||
f057f6cd | 706 | gfs2_others_may_mount(sdp); |
b3b94faa | 707 | } else if (!sdp->sd_args.ar_spectator) { |
6ecd7c2d | 708 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
b3b94faa DT |
709 | if (error) { |
710 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
711 | goto fail_jinode_gh; | |
712 | } | |
713 | } | |
714 | ||
086cc672 | 715 | sdp->sd_log_idle = 1; |
b3b94faa DT |
716 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
717 | gfs2_glock_dq_uninit(&ji_gh); | |
718 | jindex = 0; | |
2e60d768 | 719 | INIT_WORK(&sdp->sd_freeze_work, gfs2_freeze_func); |
b3b94faa DT |
720 | return 0; |
721 | ||
a91ea69f | 722 | fail_jinode_gh: |
b3b94faa DT |
723 | if (!sdp->sd_args.ar_spectator) |
724 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
a91ea69f | 725 | fail_journal_gh: |
b3b94faa DT |
726 | if (!sdp->sd_args.ar_spectator) |
727 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
a91ea69f | 728 | fail_jindex: |
b3b94faa DT |
729 | gfs2_jindex_free(sdp); |
730 | if (jindex) | |
731 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 732 | fail: |
f42faf4f | 733 | iput(sdp->sd_jindex); |
b3b94faa DT |
734 | return error; |
735 | } | |
736 | ||
56aa72d0 | 737 | static struct lock_class_key gfs2_quota_imutex_key; |
b3b94faa DT |
738 | |
739 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
740 | { | |
b3b94faa | 741 | int error = 0; |
2b0143b5 | 742 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
743 | |
744 | if (undo) | |
f42faf4f SW |
745 | goto fail_qinode; |
746 | ||
f42faf4f | 747 | error = init_journal(sdp, undo); |
0e48e055 | 748 | complete_all(&sdp->sd_journal_ready); |
f42faf4f | 749 | if (error) |
9b8df98f | 750 | goto fail; |
b3b94faa | 751 | |
b3b94faa | 752 | /* Read in the master statfs inode */ |
9b8df98f | 753 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
c752666c SW |
754 | if (IS_ERR(sdp->sd_statfs_inode)) { |
755 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 756 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
8d8291ae | 757 | goto fail_journal; |
b3b94faa DT |
758 | } |
759 | ||
760 | /* Read in the resource index inode */ | |
9b8df98f | 761 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
c752666c SW |
762 | if (IS_ERR(sdp->sd_rindex)) { |
763 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
764 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
765 | goto fail_statfs; | |
766 | } | |
cf45b752 | 767 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
768 | |
769 | /* Read in the quota inode */ | |
9b8df98f | 770 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
c752666c SW |
771 | if (IS_ERR(sdp->sd_quota_inode)) { |
772 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
773 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
774 | goto fail_rindex; | |
775 | } | |
56aa72d0 | 776 | /* |
3e7aafc3 | 777 | * i_rwsem on quota files is special. Since this inode is hidden system |
56aa72d0 JK |
778 | * file, we are safe to define locking ourselves. |
779 | */ | |
9902af79 | 780 | lockdep_set_class(&sdp->sd_quota_inode->i_rwsem, |
56aa72d0 | 781 | &gfs2_quota_imutex_key); |
a365fbf3 SW |
782 | |
783 | error = gfs2_rindex_update(sdp); | |
784 | if (error) | |
785 | goto fail_qinode; | |
786 | ||
b3b94faa DT |
787 | return 0; |
788 | ||
f42faf4f SW |
789 | fail_qinode: |
790 | iput(sdp->sd_quota_inode); | |
f42faf4f | 791 | fail_rindex: |
b3b94faa | 792 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 793 | iput(sdp->sd_rindex); |
f42faf4f SW |
794 | fail_statfs: |
795 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
796 | fail_journal: |
797 | init_journal(sdp, UNDO); | |
f42faf4f | 798 | fail: |
b3b94faa DT |
799 | return error; |
800 | } | |
801 | ||
802 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
803 | { | |
f42faf4f | 804 | struct inode *pn = NULL; |
b3b94faa DT |
805 | char buf[30]; |
806 | int error = 0; | |
5c676f6d | 807 | struct gfs2_inode *ip; |
2b0143b5 | 808 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
809 | |
810 | if (sdp->sd_args.ar_spectator) | |
811 | return 0; | |
812 | ||
813 | if (undo) | |
814 | goto fail_qc_gh; | |
815 | ||
9b8df98f | 816 | pn = gfs2_lookup_simple(master, "per_node"); |
c752666c SW |
817 | if (IS_ERR(pn)) { |
818 | error = PTR_ERR(pn); | |
b3b94faa DT |
819 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
820 | return error; | |
821 | } | |
822 | ||
b3b94faa | 823 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
824 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
825 | if (IS_ERR(sdp->sd_sc_inode)) { | |
826 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa | 827 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
8d8291ae | 828 | goto fail; |
b3b94faa DT |
829 | } |
830 | ||
b3b94faa | 831 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
832 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
833 | if (IS_ERR(sdp->sd_qc_inode)) { | |
834 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
835 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
836 | goto fail_ut_i; | |
837 | } | |
838 | ||
f42faf4f | 839 | iput(pn); |
b3b94faa DT |
840 | pn = NULL; |
841 | ||
feaa7bba | 842 | ip = GFS2_I(sdp->sd_sc_inode); |
8d8291ae | 843 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
844 | &sdp->sd_sc_gh); |
845 | if (error) { | |
846 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
8d8291ae | 847 | goto fail_qc_i; |
b3b94faa DT |
848 | } |
849 | ||
feaa7bba | 850 | ip = GFS2_I(sdp->sd_qc_inode); |
8d8291ae | 851 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
852 | &sdp->sd_qc_gh); |
853 | if (error) { | |
854 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
855 | goto fail_ut_gh; | |
856 | } | |
857 | ||
858 | return 0; | |
859 | ||
a91ea69f | 860 | fail_qc_gh: |
b3b94faa | 861 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 862 | fail_ut_gh: |
b3b94faa | 863 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 864 | fail_qc_i: |
f42faf4f | 865 | iput(sdp->sd_qc_inode); |
a91ea69f | 866 | fail_ut_i: |
f42faf4f | 867 | iput(sdp->sd_sc_inode); |
a91ea69f | 868 | fail: |
6fde2242 | 869 | iput(pn); |
b3b94faa DT |
870 | return error; |
871 | } | |
872 | ||
f057f6cd SW |
873 | static const match_table_t nolock_tokens = { |
874 | { Opt_jid, "jid=%d\n", }, | |
875 | { Opt_err, NULL }, | |
876 | }; | |
877 | ||
878 | static const struct lm_lockops nolock_ops = { | |
879 | .lm_proto_name = "lock_nolock", | |
fc0e38da | 880 | .lm_put_lock = gfs2_glock_free, |
f057f6cd SW |
881 | .lm_tokens = &nolock_tokens, |
882 | }; | |
883 | ||
da755fdb SW |
884 | /** |
885 | * gfs2_lm_mount - mount a locking protocol | |
886 | * @sdp: the filesystem | |
3ad2f3fb | 887 | * @args: mount arguments |
da755fdb SW |
888 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
889 | * | |
890 | * Returns: errno | |
891 | */ | |
892 | ||
893 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
894 | { | |
f057f6cd SW |
895 | const struct lm_lockops *lm; |
896 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
897 | struct gfs2_args *args = &sdp->sd_args; | |
898 | const char *proto = sdp->sd_proto_name; | |
899 | const char *table = sdp->sd_table_name; | |
f057f6cd SW |
900 | char *o, *options; |
901 | int ret; | |
da755fdb | 902 | |
f057f6cd SW |
903 | if (!strcmp("lock_nolock", proto)) { |
904 | lm = &nolock_ops; | |
905 | sdp->sd_args.ar_localflocks = 1; | |
f057f6cd SW |
906 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
907 | } else if (!strcmp("lock_dlm", proto)) { | |
908 | lm = &gfs2_dlm_ops; | |
909 | #endif | |
910 | } else { | |
d77d1b58 | 911 | pr_info("can't find protocol %s\n", proto); |
f057f6cd SW |
912 | return -ENOENT; |
913 | } | |
da755fdb SW |
914 | |
915 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
916 | ||
f057f6cd SW |
917 | ls->ls_ops = lm; |
918 | ls->ls_first = 1; | |
da755fdb | 919 | |
f057f6cd SW |
920 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
921 | substring_t tmp[MAX_OPT_ARGS]; | |
922 | int token, option; | |
923 | ||
924 | if (!o || !*o) | |
925 | continue; | |
926 | ||
927 | token = match_token(o, *lm->lm_tokens, tmp); | |
928 | switch (token) { | |
929 | case Opt_jid: | |
930 | ret = match_int(&tmp[0], &option); | |
931 | if (ret || option < 0) | |
932 | goto hostdata_error; | |
ba6e9364 SW |
933 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
934 | ls->ls_jid = option; | |
f057f6cd SW |
935 | break; |
936 | case Opt_id: | |
4875647a | 937 | case Opt_nodir: |
2b88f7c5 | 938 | /* Obsolete, but left for backward compat purposes */ |
f057f6cd SW |
939 | break; |
940 | case Opt_first: | |
941 | ret = match_int(&tmp[0], &option); | |
942 | if (ret || (option != 0 && option != 1)) | |
943 | goto hostdata_error; | |
944 | ls->ls_first = option; | |
945 | break; | |
f057f6cd SW |
946 | case Opt_err: |
947 | default: | |
948 | hostdata_error: | |
949 | fs_info(sdp, "unknown hostdata (%s)\n", o); | |
950 | return -EINVAL; | |
951 | } | |
da755fdb SW |
952 | } |
953 | ||
f057f6cd SW |
954 | if (lm->lm_mount == NULL) { |
955 | fs_info(sdp, "Now mounting FS...\n"); | |
19237039 | 956 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 957 | return 0; |
da755fdb | 958 | } |
e0c2a9aa | 959 | ret = lm->lm_mount(sdp, table); |
f057f6cd SW |
960 | if (ret == 0) |
961 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); | |
19237039 | 962 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 963 | return ret; |
da755fdb SW |
964 | } |
965 | ||
966 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
967 | { | |
f057f6cd | 968 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
eb43e660 | 969 | if (likely(!gfs2_withdrawn(sdp)) && lm->lm_unmount) |
f057f6cd | 970 | lm->lm_unmount(sdp); |
da755fdb | 971 | } |
b3b94faa | 972 | |
ba6e9364 SW |
973 | static int wait_on_journal(struct gfs2_sbd *sdp) |
974 | { | |
ba6e9364 SW |
975 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
976 | return 0; | |
977 | ||
74316201 N |
978 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, TASK_INTERRUPTIBLE) |
979 | ? -EINTR : 0; | |
ba6e9364 SW |
980 | } |
981 | ||
8633ecfa SW |
982 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
983 | { | |
984 | struct super_block *sb = sdp->sd_vfs; | |
985 | char ro[20]; | |
986 | char spectator[20]; | |
987 | char *envp[] = { ro, spectator, NULL }; | |
bc98a42c | 988 | sprintf(ro, "RDONLY=%d", sb_rdonly(sb)); |
8633ecfa SW |
989 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
990 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); | |
991 | } | |
992 | ||
b3b94faa | 993 | /** |
1f52aa08 | 994 | * gfs2_fill_super - Read in superblock |
b3b94faa | 995 | * @sb: The VFS superblock |
1f52aa08 | 996 | * @args: Mount options |
b3b94faa DT |
997 | * @silent: Don't complain if it's not a GFS2 filesystem |
998 | * | |
1f52aa08 | 999 | * Returns: -errno |
b3b94faa | 1000 | */ |
1f52aa08 | 1001 | static int gfs2_fill_super(struct super_block *sb, struct fs_context *fc) |
b3b94faa | 1002 | { |
1f52aa08 AP |
1003 | struct gfs2_args *args = fc->fs_private; |
1004 | int silent = fc->sb_flags & SB_SILENT; | |
b3b94faa DT |
1005 | struct gfs2_sbd *sdp; |
1006 | struct gfs2_holder mount_gh; | |
1007 | int error; | |
1008 | ||
1009 | sdp = init_sbd(sb); | |
1010 | if (!sdp) { | |
d77d1b58 | 1011 | pr_warn("can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1012 | return -ENOMEM; |
1013 | } | |
f55073ff | 1014 | sdp->sd_args = *args; |
b3b94faa | 1015 | |
fe64d517 | 1016 | if (sdp->sd_args.ar_spectator) { |
1751e8a6 | 1017 | sb->s_flags |= SB_RDONLY; |
e8ca5cc5 | 1018 | set_bit(SDF_RORECOVERY, &sdp->sd_flags); |
fe64d517 | 1019 | } |
6f04c1c7 | 1020 | if (sdp->sd_args.ar_posix_acl) |
1751e8a6 | 1021 | sb->s_flags |= SB_POSIXACL; |
f25934c5 CH |
1022 | if (sdp->sd_args.ar_nobarrier) |
1023 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
6f04c1c7 | 1024 | |
1751e8a6 | 1025 | sb->s_flags |= SB_NOSEC; |
719ee344 SW |
1026 | sb->s_magic = GFS2_MAGIC; |
1027 | sb->s_op = &gfs2_super_ops; | |
41ced6dc | 1028 | sb->s_d_op = &gfs2_dops; |
719ee344 | 1029 | sb->s_export_op = &gfs2_export_ops; |
40b78a32 | 1030 | sb->s_xattr = gfs2_xattr_handlers; |
cc632e7f | 1031 | sb->s_qcop = &gfs2_quotactl_ops; |
de3b08d3 | 1032 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
cc632e7f | 1033 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
719ee344 SW |
1034 | sb->s_time_gran = 1; |
1035 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1036 | |
1037 | /* Set up the buffer cache and fill in some fake block size values | |
1038 | to allow us to read-in the on-disk superblock. */ | |
1039 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
1040 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
1041 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
1042 | GFS2_BASIC_BLOCK_SHIFT; | |
47a9a527 | 1043 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
b3b94faa | 1044 | |
5e687eac | 1045 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
3d3c10f2 BM |
1046 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
1047 | if (sdp->sd_args.ar_statfs_quantum) { | |
1048 | sdp->sd_tune.gt_statfs_slow = 0; | |
1049 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; | |
32e471ef | 1050 | } else { |
3d3c10f2 BM |
1051 | sdp->sd_tune.gt_statfs_slow = 1; |
1052 | sdp->sd_tune.gt_statfs_quantum = 30; | |
1053 | } | |
48c2b613 | 1054 | |
b3b94faa | 1055 | error = init_names(sdp, silent); |
0d515210 BP |
1056 | if (error) { |
1057 | /* In this case, we haven't initialized sysfs, so we have to | |
1058 | manually free the sdp. */ | |
2a27b755 | 1059 | free_sbd(sdp); |
0d515210 BP |
1060 | sb->s_fs_info = NULL; |
1061 | return error; | |
1062 | } | |
b3b94faa | 1063 | |
561b7969 | 1064 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s", sdp->sd_table_name); |
e0c2a9aa | 1065 | |
b3b94faa | 1066 | error = gfs2_sys_fs_add(sdp); |
0d515210 BP |
1067 | /* |
1068 | * If we hit an error here, gfs2_sys_fs_add will have called function | |
1069 | * kobject_put which causes the sysfs usage count to go to zero, which | |
1070 | * causes sysfs to call function gfs2_sbd_release, which frees sdp. | |
1071 | * Subsequent error paths here will call gfs2_sys_fs_del, which also | |
1072 | * kobject_put to free sdp. | |
1073 | */ | |
b3b94faa | 1074 | if (error) |
0d515210 BP |
1075 | return error; |
1076 | ||
1077 | gfs2_create_debugfs_file(sdp); | |
b3b94faa DT |
1078 | |
1079 | error = gfs2_lm_mount(sdp, silent); | |
1080 | if (error) | |
0d515210 | 1081 | goto fail_debug; |
b3b94faa DT |
1082 | |
1083 | error = init_locking(sdp, &mount_gh, DO); | |
1084 | if (error) | |
1085 | goto fail_lm; | |
1086 | ||
9b8df98f | 1087 | error = init_sb(sdp, silent); |
b3b94faa DT |
1088 | if (error) |
1089 | goto fail_locking; | |
b3b94faa | 1090 | |
ba6e9364 SW |
1091 | error = wait_on_journal(sdp); |
1092 | if (error) | |
1093 | goto fail_sb; | |
1094 | ||
feb47ca9 SW |
1095 | /* |
1096 | * If user space has failed to join the cluster or some similar | |
1097 | * failure has occurred, then the journal id will contain a | |
1098 | * negative (error) number. This will then be returned to the | |
1099 | * caller (of the mount syscall). We do this even for spectator | |
1100 | * mounts (which just write a jid of 0 to indicate "ok" even though | |
1101 | * the jid is unused in the spectator case) | |
1102 | */ | |
1103 | if (sdp->sd_lockstruct.ls_jid < 0) { | |
1104 | error = sdp->sd_lockstruct.ls_jid; | |
1105 | sdp->sd_lockstruct.ls_jid = 0; | |
1106 | goto fail_sb; | |
1107 | } | |
1108 | ||
e0c2a9aa | 1109 | if (sdp->sd_args.ar_spectator) |
561b7969 | 1110 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.s", |
e0c2a9aa DT |
1111 | sdp->sd_table_name); |
1112 | else | |
561b7969 | 1113 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.%u", |
e0c2a9aa DT |
1114 | sdp->sd_table_name, sdp->sd_lockstruct.ls_jid); |
1115 | ||
b3b94faa DT |
1116 | error = init_inodes(sdp, DO); |
1117 | if (error) | |
f42faf4f | 1118 | goto fail_sb; |
b3b94faa DT |
1119 | |
1120 | error = init_per_node(sdp, DO); | |
1121 | if (error) | |
1122 | goto fail_inodes; | |
1123 | ||
1124 | error = gfs2_statfs_init(sdp); | |
1125 | if (error) { | |
1126 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1127 | goto fail_per_node; | |
1128 | } | |
1129 | ||
bc98a42c | 1130 | if (!sb_rdonly(sb)) { |
b3b94faa DT |
1131 | error = gfs2_make_fs_rw(sdp); |
1132 | if (error) { | |
1133 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
8ad151c2 | 1134 | goto fail_per_node; |
b3b94faa DT |
1135 | } |
1136 | } | |
1137 | ||
1138 | gfs2_glock_dq_uninit(&mount_gh); | |
8633ecfa | 1139 | gfs2_online_uevent(sdp); |
b3b94faa DT |
1140 | return 0; |
1141 | ||
a91ea69f | 1142 | fail_per_node: |
b3b94faa | 1143 | init_per_node(sdp, UNDO); |
a91ea69f | 1144 | fail_inodes: |
b3b94faa | 1145 | init_inodes(sdp, UNDO); |
a91ea69f | 1146 | fail_sb: |
9b8df98f SW |
1147 | if (sdp->sd_root_dir) |
1148 | dput(sdp->sd_root_dir); | |
1149 | if (sdp->sd_master_dir) | |
1150 | dput(sdp->sd_master_dir); | |
e7c8707e SW |
1151 | if (sb->s_root) |
1152 | dput(sb->s_root); | |
9b8df98f | 1153 | sb->s_root = NULL; |
a91ea69f | 1154 | fail_locking: |
b3b94faa | 1155 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1156 | fail_lm: |
0e48e055 | 1157 | complete_all(&sdp->sd_journal_ready); |
fefc03bf | 1158 | gfs2_gl_hash_clear(sdp); |
b3b94faa | 1159 | gfs2_lm_unmount(sdp); |
0d515210 | 1160 | fail_debug: |
5f882096 | 1161 | gfs2_delete_debugfs_file(sdp); |
0d515210 BP |
1162 | /* gfs2_sys_fs_del must be the last thing we do, since it causes |
1163 | * sysfs to call function gfs2_sbd_release, which frees sdp. */ | |
1164 | gfs2_sys_fs_del(sdp); | |
5c676f6d | 1165 | sb->s_fs_info = NULL; |
b3b94faa DT |
1166 | return error; |
1167 | } | |
1168 | ||
1f52aa08 AP |
1169 | /** |
1170 | * gfs2_get_tree - Get the GFS2 superblock and root directory | |
1171 | * @fc: The filesystem context | |
1172 | * | |
1173 | * Returns: 0 or -errno on error | |
1174 | */ | |
1175 | static int gfs2_get_tree(struct fs_context *fc) | |
b3b94faa | 1176 | { |
1f52aa08 AP |
1177 | struct gfs2_args *args = fc->fs_private; |
1178 | struct gfs2_sbd *sdp; | |
1179 | int error; | |
1180 | ||
1181 | error = get_tree_bdev(fc, gfs2_fill_super); | |
1182 | if (error) | |
1183 | return error; | |
1184 | ||
1185 | sdp = fc->root->d_sb->s_fs_info; | |
1186 | dput(fc->root); | |
1187 | if (args->ar_meta) | |
1188 | fc->root = dget(sdp->sd_master_dir); | |
1189 | else | |
1190 | fc->root = dget(sdp->sd_root_dir); | |
f55073ff | 1191 | return 0; |
86384605 AD |
1192 | } |
1193 | ||
1f52aa08 | 1194 | static void gfs2_fc_free(struct fs_context *fc) |
f6d03139 | 1195 | { |
1f52aa08 AP |
1196 | struct gfs2_args *args = fc->fs_private; |
1197 | ||
1198 | kfree(args); | |
f6d03139 SW |
1199 | } |
1200 | ||
1f52aa08 AP |
1201 | enum gfs2_param { |
1202 | Opt_lockproto, | |
1203 | Opt_locktable, | |
1204 | Opt_hostdata, | |
1205 | Opt_spectator, | |
1206 | Opt_ignore_local_fs, | |
1207 | Opt_localflocks, | |
1208 | Opt_localcaching, | |
1209 | Opt_debug, | |
1210 | Opt_upgrade, | |
1211 | Opt_acl, | |
1212 | Opt_quota, | |
1213 | Opt_suiddir, | |
1214 | Opt_data, | |
1215 | Opt_meta, | |
1216 | Opt_discard, | |
1217 | Opt_commit, | |
1218 | Opt_errors, | |
1219 | Opt_statfs_quantum, | |
1220 | Opt_statfs_percent, | |
1221 | Opt_quota_quantum, | |
1222 | Opt_barrier, | |
1223 | Opt_rgrplvb, | |
1224 | Opt_loccookie, | |
1225 | }; | |
f55073ff | 1226 | |
1f52aa08 AP |
1227 | enum opt_quota { |
1228 | Opt_quota_unset = 0, | |
1229 | Opt_quota_off, | |
1230 | Opt_quota_account, | |
1231 | Opt_quota_on, | |
1232 | }; | |
1233 | ||
1234 | static const unsigned int opt_quota_values[] = { | |
1235 | [Opt_quota_off] = GFS2_QUOTA_OFF, | |
1236 | [Opt_quota_account] = GFS2_QUOTA_ACCOUNT, | |
1237 | [Opt_quota_on] = GFS2_QUOTA_ON, | |
1238 | }; | |
f55073ff | 1239 | |
1f52aa08 AP |
1240 | enum opt_data { |
1241 | Opt_data_writeback = GFS2_DATA_WRITEBACK, | |
1242 | Opt_data_ordered = GFS2_DATA_ORDERED, | |
1243 | }; | |
f55073ff | 1244 | |
1f52aa08 AP |
1245 | enum opt_errors { |
1246 | Opt_errors_withdraw = GFS2_ERRORS_WITHDRAW, | |
1247 | Opt_errors_panic = GFS2_ERRORS_PANIC, | |
1248 | }; | |
f55073ff | 1249 | |
1f52aa08 AP |
1250 | static const struct fs_parameter_spec gfs2_param_specs[] = { |
1251 | fsparam_string ("lockproto", Opt_lockproto), | |
1252 | fsparam_string ("locktable", Opt_locktable), | |
1253 | fsparam_string ("hostdata", Opt_hostdata), | |
1254 | fsparam_flag ("spectator", Opt_spectator), | |
1255 | fsparam_flag ("norecovery", Opt_spectator), | |
1256 | fsparam_flag ("ignore_local_fs", Opt_ignore_local_fs), | |
1257 | fsparam_flag ("localflocks", Opt_localflocks), | |
1258 | fsparam_flag ("localcaching", Opt_localcaching), | |
1259 | fsparam_flag_no("debug", Opt_debug), | |
1260 | fsparam_flag ("upgrade", Opt_upgrade), | |
1261 | fsparam_flag_no("acl", Opt_acl), | |
1262 | fsparam_flag_no("suiddir", Opt_suiddir), | |
1263 | fsparam_enum ("data", Opt_data), | |
1264 | fsparam_flag ("meta", Opt_meta), | |
1265 | fsparam_flag_no("discard", Opt_discard), | |
1266 | fsparam_s32 ("commit", Opt_commit), | |
1267 | fsparam_enum ("errors", Opt_errors), | |
1268 | fsparam_s32 ("statfs_quantum", Opt_statfs_quantum), | |
1269 | fsparam_s32 ("statfs_percent", Opt_statfs_percent), | |
1270 | fsparam_s32 ("quota_quantum", Opt_quota_quantum), | |
1271 | fsparam_flag_no("barrier", Opt_barrier), | |
1272 | fsparam_flag_no("rgrplvb", Opt_rgrplvb), | |
1273 | fsparam_flag_no("loccookie", Opt_loccookie), | |
1274 | /* quota can be a flag or an enum so it gets special treatment */ | |
1275 | __fsparam(fs_param_is_enum, "quota", Opt_quota, fs_param_neg_with_no|fs_param_v_optional), | |
1276 | {} | |
1277 | }; | |
8bcbbf00 | 1278 | |
1f52aa08 AP |
1279 | static const struct fs_parameter_enum gfs2_param_enums[] = { |
1280 | { Opt_quota, "off", Opt_quota_off }, | |
1281 | { Opt_quota, "account", Opt_quota_account }, | |
1282 | { Opt_quota, "on", Opt_quota_on }, | |
1283 | { Opt_data, "writeback", Opt_data_writeback }, | |
1284 | { Opt_data, "ordered", Opt_data_ordered }, | |
1285 | { Opt_errors, "withdraw", Opt_errors_withdraw }, | |
1286 | { Opt_errors, "panic", Opt_errors_panic }, | |
1287 | {} | |
1288 | }; | |
f55073ff | 1289 | |
1a48049a | 1290 | static const struct fs_parameter_description gfs2_fs_parameters = { |
1f52aa08 AP |
1291 | .name = "gfs2", |
1292 | .specs = gfs2_param_specs, | |
1293 | .enums = gfs2_param_enums, | |
1294 | }; | |
1295 | ||
1296 | /* Parse a single mount parameter */ | |
1297 | static int gfs2_parse_param(struct fs_context *fc, struct fs_parameter *param) | |
1298 | { | |
1299 | struct gfs2_args *args = fc->fs_private; | |
1300 | struct fs_parse_result result; | |
1301 | int o; | |
1302 | ||
1303 | o = fs_parse(fc, &gfs2_fs_parameters, param, &result); | |
1304 | if (o < 0) | |
1305 | return o; | |
1306 | ||
1307 | switch (o) { | |
1308 | case Opt_lockproto: | |
1309 | strlcpy(args->ar_lockproto, param->string, GFS2_LOCKNAME_LEN); | |
1310 | break; | |
1311 | case Opt_locktable: | |
1312 | strlcpy(args->ar_locktable, param->string, GFS2_LOCKNAME_LEN); | |
1313 | break; | |
1314 | case Opt_hostdata: | |
1315 | strlcpy(args->ar_hostdata, param->string, GFS2_LOCKNAME_LEN); | |
1316 | break; | |
1317 | case Opt_spectator: | |
1318 | args->ar_spectator = 1; | |
1319 | break; | |
1320 | case Opt_ignore_local_fs: | |
1321 | /* Retained for backwards compat only */ | |
1322 | break; | |
1323 | case Opt_localflocks: | |
1324 | args->ar_localflocks = 1; | |
1325 | break; | |
1326 | case Opt_localcaching: | |
1327 | /* Retained for backwards compat only */ | |
1328 | break; | |
1329 | case Opt_debug: | |
1330 | if (result.boolean && args->ar_errors == GFS2_ERRORS_PANIC) | |
1331 | return invalf(fc, "gfs2: -o debug and -o errors=panic are mutually exclusive"); | |
1332 | args->ar_debug = result.boolean; | |
1333 | break; | |
1334 | case Opt_upgrade: | |
1335 | /* Retained for backwards compat only */ | |
1336 | break; | |
1337 | case Opt_acl: | |
1338 | args->ar_posix_acl = result.boolean; | |
1339 | break; | |
1340 | case Opt_quota: | |
1341 | /* The quota option can be a flag or an enum. A non-zero int_32 | |
1342 | result means that we have an enum index. Otherwise we have | |
1343 | to rely on the 'negated' flag to tell us whether 'quota' or | |
1344 | 'noquota' was specified. */ | |
1345 | if (result.negated) | |
1346 | args->ar_quota = GFS2_QUOTA_OFF; | |
1347 | else if (result.int_32 > 0) | |
1348 | args->ar_quota = opt_quota_values[result.int_32]; | |
1349 | else | |
1350 | args->ar_quota = GFS2_QUOTA_ON; | |
1351 | break; | |
1352 | case Opt_suiddir: | |
1353 | args->ar_suiddir = result.boolean; | |
1354 | break; | |
1355 | case Opt_data: | |
1356 | /* The uint_32 result maps directly to GFS2_DATA_* */ | |
1357 | args->ar_data = result.uint_32; | |
1358 | break; | |
1359 | case Opt_meta: | |
1360 | args->ar_meta = 1; | |
1361 | break; | |
1362 | case Opt_discard: | |
1363 | args->ar_discard = result.boolean; | |
1364 | break; | |
1365 | case Opt_commit: | |
1366 | if (result.int_32 <= 0) | |
1367 | return invalf(fc, "gfs2: commit mount option requires a positive numeric argument"); | |
1368 | args->ar_commit = result.int_32; | |
1369 | break; | |
1370 | case Opt_statfs_quantum: | |
1371 | if (result.int_32 < 0) | |
1372 | return invalf(fc, "gfs2: statfs_quantum mount option requires a non-negative numeric argument"); | |
1373 | args->ar_statfs_quantum = result.int_32; | |
1374 | break; | |
1375 | case Opt_quota_quantum: | |
1376 | if (result.int_32 <= 0) | |
1377 | return invalf(fc, "gfs2: quota_quantum mount option requires a positive numeric argument"); | |
1378 | args->ar_quota_quantum = result.int_32; | |
1379 | break; | |
1380 | case Opt_statfs_percent: | |
1381 | if (result.int_32 < 0 || result.int_32 > 100) | |
1382 | return invalf(fc, "gfs2: statfs_percent mount option requires a numeric argument between 0 and 100"); | |
1383 | args->ar_statfs_percent = result.int_32; | |
1384 | break; | |
1385 | case Opt_errors: | |
1386 | if (args->ar_debug && result.uint_32 == GFS2_ERRORS_PANIC) | |
1387 | return invalf(fc, "gfs2: -o debug and -o errors=panic are mutually exclusive"); | |
1388 | args->ar_errors = result.uint_32; | |
1389 | break; | |
1390 | case Opt_barrier: | |
1391 | args->ar_nobarrier = result.boolean; | |
1392 | break; | |
1393 | case Opt_rgrplvb: | |
1394 | args->ar_rgrplvb = result.boolean; | |
1395 | break; | |
1396 | case Opt_loccookie: | |
1397 | args->ar_loccookie = result.boolean; | |
1398 | break; | |
1399 | default: | |
1400 | return invalf(fc, "gfs2: invalid mount option: %s", param->key); | |
f55073ff | 1401 | } |
1f52aa08 AP |
1402 | return 0; |
1403 | } | |
f55073ff | 1404 | |
1f52aa08 AP |
1405 | static int gfs2_reconfigure(struct fs_context *fc) |
1406 | { | |
1407 | struct super_block *sb = fc->root->d_sb; | |
1408 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1409 | struct gfs2_args *oldargs = &sdp->sd_args; | |
1410 | struct gfs2_args *newargs = fc->fs_private; | |
1411 | struct gfs2_tune *gt = &sdp->sd_tune; | |
1412 | int error = 0; | |
1413 | ||
1414 | sync_filesystem(sb); | |
1415 | ||
1416 | spin_lock(>->gt_spin); | |
1417 | oldargs->ar_commit = gt->gt_logd_secs; | |
1418 | oldargs->ar_quota_quantum = gt->gt_quota_quantum; | |
1419 | if (gt->gt_statfs_slow) | |
1420 | oldargs->ar_statfs_quantum = 0; | |
1421 | else | |
1422 | oldargs->ar_statfs_quantum = gt->gt_statfs_quantum; | |
1423 | spin_unlock(>->gt_spin); | |
1424 | ||
1425 | if (strcmp(newargs->ar_lockproto, oldargs->ar_lockproto)) { | |
1426 | errorf(fc, "gfs2: reconfiguration of locking protocol not allowed"); | |
1427 | return -EINVAL; | |
1428 | } | |
1429 | if (strcmp(newargs->ar_locktable, oldargs->ar_locktable)) { | |
1430 | errorf(fc, "gfs2: reconfiguration of lock table not allowed"); | |
1431 | return -EINVAL; | |
1432 | } | |
1433 | if (strcmp(newargs->ar_hostdata, oldargs->ar_hostdata)) { | |
1434 | errorf(fc, "gfs2: reconfiguration of host data not allowed"); | |
1435 | return -EINVAL; | |
1436 | } | |
1437 | if (newargs->ar_spectator != oldargs->ar_spectator) { | |
1438 | errorf(fc, "gfs2: reconfiguration of spectator mode not allowed"); | |
1439 | return -EINVAL; | |
1440 | } | |
1441 | if (newargs->ar_localflocks != oldargs->ar_localflocks) { | |
1442 | errorf(fc, "gfs2: reconfiguration of localflocks not allowed"); | |
1443 | return -EINVAL; | |
1444 | } | |
1445 | if (newargs->ar_meta != oldargs->ar_meta) { | |
1446 | errorf(fc, "gfs2: switching between gfs2 and gfs2meta not allowed"); | |
1447 | return -EINVAL; | |
1448 | } | |
1449 | if (oldargs->ar_spectator) | |
1450 | fc->sb_flags |= SB_RDONLY; | |
1451 | ||
1452 | if ((sb->s_flags ^ fc->sb_flags) & SB_RDONLY) { | |
1453 | if (fc->sb_flags & SB_RDONLY) { | |
1454 | error = gfs2_make_fs_ro(sdp); | |
1455 | if (error) | |
1456 | errorf(fc, "gfs2: unable to remount read-only"); | |
1457 | } else { | |
1458 | error = gfs2_make_fs_rw(sdp); | |
1459 | if (error) | |
1460 | errorf(fc, "gfs2: unable to remount read-write"); | |
1461 | } | |
f55073ff | 1462 | } |
1f52aa08 | 1463 | sdp->sd_args = *newargs; |
f55073ff | 1464 | |
1f52aa08 AP |
1465 | if (sdp->sd_args.ar_posix_acl) |
1466 | sb->s_flags |= SB_POSIXACL; | |
1467 | else | |
1468 | sb->s_flags &= ~SB_POSIXACL; | |
1469 | if (sdp->sd_args.ar_nobarrier) | |
1470 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
f55073ff | 1471 | else |
1f52aa08 AP |
1472 | clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); |
1473 | spin_lock(>->gt_spin); | |
1474 | gt->gt_logd_secs = newargs->ar_commit; | |
1475 | gt->gt_quota_quantum = newargs->ar_quota_quantum; | |
1476 | if (newargs->ar_statfs_quantum) { | |
1477 | gt->gt_statfs_slow = 0; | |
1478 | gt->gt_statfs_quantum = newargs->ar_statfs_quantum; | |
1479 | } | |
1480 | else { | |
1481 | gt->gt_statfs_slow = 1; | |
1482 | gt->gt_statfs_quantum = 30; | |
1483 | } | |
1484 | spin_unlock(>->gt_spin); | |
1485 | ||
1486 | gfs2_online_uevent(sdp); | |
1487 | return error; | |
1488 | } | |
1489 | ||
1490 | static const struct fs_context_operations gfs2_context_ops = { | |
1491 | .free = gfs2_fc_free, | |
1492 | .parse_param = gfs2_parse_param, | |
1493 | .get_tree = gfs2_get_tree, | |
1494 | .reconfigure = gfs2_reconfigure, | |
1495 | }; | |
1496 | ||
1497 | /* Set up the filesystem mount context */ | |
1498 | static int gfs2_init_fs_context(struct fs_context *fc) | |
1499 | { | |
1500 | struct gfs2_args *args; | |
1501 | ||
d5798141 | 1502 | args = kmalloc(sizeof(*args), GFP_KERNEL); |
1f52aa08 AP |
1503 | if (args == NULL) |
1504 | return -ENOMEM; | |
1505 | ||
d5798141 AP |
1506 | if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) { |
1507 | struct gfs2_sbd *sdp = fc->root->d_sb->s_fs_info; | |
1f52aa08 | 1508 | |
d5798141 AP |
1509 | *args = sdp->sd_args; |
1510 | } else { | |
1511 | memset(args, 0, sizeof(*args)); | |
1512 | args->ar_quota = GFS2_QUOTA_DEFAULT; | |
1513 | args->ar_data = GFS2_DATA_DEFAULT; | |
1514 | args->ar_commit = 30; | |
1515 | args->ar_statfs_quantum = 30; | |
1516 | args->ar_quota_quantum = 60; | |
1517 | args->ar_errors = GFS2_ERRORS_DEFAULT; | |
1518 | } | |
1f52aa08 AP |
1519 | fc->fs_private = args; |
1520 | fc->ops = &gfs2_context_ops; | |
1521 | return 0; | |
f55073ff SW |
1522 | } |
1523 | ||
1f52aa08 | 1524 | static int set_meta_super(struct super_block *s, struct fs_context *fc) |
f6d03139 SW |
1525 | { |
1526 | return -EINVAL; | |
1527 | } | |
1528 | ||
1f52aa08 AP |
1529 | static int test_meta_super(struct super_block *s, struct fs_context *fc) |
1530 | { | |
1531 | return (fc->sget_key == s->s_bdev); | |
1532 | } | |
1533 | ||
1534 | static int gfs2_meta_get_tree(struct fs_context *fc) | |
86384605 | 1535 | { |
f6d03139 | 1536 | struct super_block *s; |
003dec89 | 1537 | struct gfs2_sbd *sdp; |
e24977d4 | 1538 | struct path path; |
86384605 | 1539 | int error; |
907b9bce | 1540 | |
1f52aa08 AP |
1541 | if (!fc->source || !*fc->source) |
1542 | return -EINVAL; | |
3df629d8 | 1543 | |
1f52aa08 | 1544 | error = kern_path(fc->source, LOOKUP_FOLLOW, &path); |
86384605 | 1545 | if (error) { |
d77d1b58 | 1546 | pr_warn("path_lookup on %s returned error %d\n", |
1f52aa08 AP |
1547 | fc->source, error); |
1548 | return error; | |
86384605 | 1549 | } |
1f52aa08 AP |
1550 | fc->fs_type = &gfs2_fs_type; |
1551 | fc->sget_key = path.dentry->d_sb->s_bdev; | |
1552 | s = sget_fc(fc, test_meta_super, set_meta_super); | |
e24977d4 | 1553 | path_put(&path); |
f6d03139 | 1554 | if (IS_ERR(s)) { |
d77d1b58 | 1555 | pr_warn("gfs2 mount does not exist\n"); |
1f52aa08 | 1556 | return PTR_ERR(s); |
86384605 | 1557 | } |
1f52aa08 | 1558 | if ((fc->sb_flags ^ s->s_flags) & SB_RDONLY) { |
f55073ff | 1559 | deactivate_locked_super(s); |
1f52aa08 | 1560 | return -EBUSY; |
f55073ff | 1561 | } |
f6d03139 | 1562 | sdp = s->s_fs_info; |
1f52aa08 AP |
1563 | fc->root = dget(sdp->sd_master_dir); |
1564 | return 0; | |
1565 | } | |
1566 | ||
1567 | static const struct fs_context_operations gfs2_meta_context_ops = { | |
30aecae8 | 1568 | .free = gfs2_fc_free, |
1f52aa08 AP |
1569 | .get_tree = gfs2_meta_get_tree, |
1570 | }; | |
1571 | ||
1572 | static int gfs2_meta_init_fs_context(struct fs_context *fc) | |
1573 | { | |
1574 | int ret = gfs2_init_fs_context(fc); | |
1575 | ||
1576 | if (ret) | |
1577 | return ret; | |
1578 | ||
1579 | fc->ops = &gfs2_meta_context_ops; | |
1580 | return 0; | |
b3b94faa DT |
1581 | } |
1582 | ||
419c93e0 | 1583 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1584 | { |
1585 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
88a19ad0 SW |
1586 | |
1587 | if (sdp == NULL) { | |
1588 | kill_block_super(sb); | |
1589 | return; | |
3af165ac | 1590 | } |
88a19ad0 | 1591 | |
805c0907 | 1592 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SYNC | GFS2_LFC_KILL_SB); |
88a19ad0 SW |
1593 | dput(sdp->sd_root_dir); |
1594 | dput(sdp->sd_master_dir); | |
1595 | sdp->sd_root_dir = NULL; | |
1596 | sdp->sd_master_dir = NULL; | |
fefc03bf | 1597 | shrink_dcache_sb(sb); |
0d515210 | 1598 | kill_block_super(sb); |
86384605 AD |
1599 | } |
1600 | ||
b3b94faa DT |
1601 | struct file_system_type gfs2_fs_type = { |
1602 | .name = "gfs2", | |
1603 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 AP |
1604 | .init_fs_context = gfs2_init_fs_context, |
1605 | .parameters = &gfs2_fs_parameters, | |
419c93e0 SW |
1606 | .kill_sb = gfs2_kill_sb, |
1607 | .owner = THIS_MODULE, | |
1608 | }; | |
7f78e035 | 1609 | MODULE_ALIAS_FS("gfs2"); |
419c93e0 SW |
1610 | |
1611 | struct file_system_type gfs2meta_fs_type = { | |
1612 | .name = "gfs2meta", | |
1613 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1614 | .init_fs_context = gfs2_meta_init_fs_context, |
b3b94faa DT |
1615 | .owner = THIS_MODULE, |
1616 | }; | |
7f78e035 | 1617 | MODULE_ALIAS_FS("gfs2meta"); |