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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 (;;) { | |
a72d2401 BP |
555 | struct gfs2_inode *jip; |
556 | ||
b5289681 SW |
557 | error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh); |
558 | if (error) | |
559 | break; | |
560 | ||
561 | name.len = sprintf(buf, "journal%u", sdp->sd_journals); | |
562 | name.hash = gfs2_disk_hash(name.name, name.len); | |
563 | ||
564 | error = gfs2_dir_check(sdp->sd_jindex, &name, NULL); | |
565 | if (error == -ENOENT) { | |
566 | error = 0; | |
567 | break; | |
568 | } | |
569 | ||
570 | gfs2_glock_dq_uninit(ji_gh); | |
571 | ||
572 | if (error) | |
573 | break; | |
574 | ||
575 | error = -ENOMEM; | |
576 | jd = kzalloc(sizeof(struct gfs2_jdesc), GFP_KERNEL); | |
577 | if (!jd) | |
578 | break; | |
579 | ||
580 | INIT_LIST_HEAD(&jd->extent_list); | |
a17d758b BP |
581 | INIT_LIST_HEAD(&jd->jd_revoke_list); |
582 | ||
6ecd7c2d | 583 | INIT_WORK(&jd->jd_work, gfs2_recover_func); |
b5289681 | 584 | jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1); |
15a798f7 | 585 | if (IS_ERR_OR_NULL(jd->jd_inode)) { |
b5289681 SW |
586 | if (!jd->jd_inode) |
587 | error = -ENOENT; | |
588 | else | |
589 | error = PTR_ERR(jd->jd_inode); | |
590 | kfree(jd); | |
591 | break; | |
592 | } | |
593 | ||
594 | spin_lock(&sdp->sd_jindex_spin); | |
595 | jd->jd_jid = sdp->sd_journals++; | |
a72d2401 BP |
596 | jip = GFS2_I(jd->jd_inode); |
597 | jd->jd_no_addr = jip->i_no_addr; | |
b5289681 SW |
598 | list_add_tail(&jd->jd_list, &sdp->sd_jindex_list); |
599 | spin_unlock(&sdp->sd_jindex_spin); | |
600 | } | |
601 | ||
602 | mutex_unlock(&sdp->sd_jindex_mutex); | |
603 | ||
604 | return error; | |
605 | } | |
606 | ||
b3b94faa DT |
607 | static int init_journal(struct gfs2_sbd *sdp, int undo) |
608 | { | |
2b0143b5 | 609 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa | 610 | struct gfs2_holder ji_gh; |
5c676f6d | 611 | struct gfs2_inode *ip; |
b3b94faa DT |
612 | int jindex = 1; |
613 | int error = 0; | |
614 | ||
615 | if (undo) { | |
616 | jindex = 0; | |
fe64d517 | 617 | goto fail_jinode_gh; |
b3b94faa DT |
618 | } |
619 | ||
9b8df98f | 620 | sdp->sd_jindex = gfs2_lookup_simple(master, "jindex"); |
c752666c | 621 | if (IS_ERR(sdp->sd_jindex)) { |
b3b94faa | 622 | fs_err(sdp, "can't lookup journal index: %d\n", error); |
c752666c | 623 | return PTR_ERR(sdp->sd_jindex); |
b3b94faa | 624 | } |
b3b94faa DT |
625 | |
626 | /* Load in the journal index special file */ | |
627 | ||
628 | error = gfs2_jindex_hold(sdp, &ji_gh); | |
629 | if (error) { | |
630 | fs_err(sdp, "can't read journal index: %d\n", error); | |
631 | goto fail; | |
632 | } | |
633 | ||
0e5a9fb0 | 634 | error = -EUSERS; |
b3b94faa DT |
635 | if (!gfs2_jindex_size(sdp)) { |
636 | fs_err(sdp, "no journals!\n"); | |
907b9bce | 637 | goto fail_jindex; |
b3b94faa DT |
638 | } |
639 | ||
f07b3520 | 640 | atomic_set(&sdp->sd_log_blks_needed, 0); |
b3b94faa DT |
641 | if (sdp->sd_args.ar_spectator) { |
642 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0); | |
fd041f0b | 643 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
644 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
645 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
b3b94faa DT |
646 | } else { |
647 | if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) { | |
648 | fs_err(sdp, "can't mount journal #%u\n", | |
649 | sdp->sd_lockstruct.ls_jid); | |
650 | fs_err(sdp, "there are only %u journals (0 - %u)\n", | |
651 | gfs2_jindex_size(sdp), | |
652 | gfs2_jindex_size(sdp) - 1); | |
653 | goto fail_jindex; | |
654 | } | |
655 | sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid); | |
656 | ||
feaa7bba | 657 | error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid, |
b3b94faa | 658 | &gfs2_journal_glops, |
601ef0d5 BP |
659 | LM_ST_EXCLUSIVE, |
660 | LM_FLAG_NOEXP | GL_NOCACHE, | |
b3b94faa DT |
661 | &sdp->sd_journal_gh); |
662 | if (error) { | |
663 | fs_err(sdp, "can't acquire journal glock: %d\n", error); | |
664 | goto fail_jindex; | |
665 | } | |
666 | ||
feaa7bba | 667 | ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
601ef0d5 | 668 | sdp->sd_jinode_gl = ip->i_gl; |
feaa7bba | 669 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, |
75be73a8 | 670 | LM_FLAG_NOEXP | GL_EXACT | GL_NOCACHE, |
b3b94faa DT |
671 | &sdp->sd_jinode_gh); |
672 | if (error) { | |
673 | fs_err(sdp, "can't acquire journal inode glock: %d\n", | |
674 | error); | |
675 | goto fail_journal_gh; | |
676 | } | |
677 | ||
678 | error = gfs2_jdesc_check(sdp->sd_jdesc); | |
679 | if (error) { | |
680 | fs_err(sdp, "my journal (%u) is bad: %d\n", | |
681 | sdp->sd_jdesc->jd_jid, error); | |
682 | goto fail_jinode_gh; | |
683 | } | |
fd041f0b | 684 | atomic_set(&sdp->sd_log_blks_free, sdp->sd_jdesc->jd_blocks); |
5e687eac BM |
685 | atomic_set(&sdp->sd_log_thresh1, 2*sdp->sd_jdesc->jd_blocks/5); |
686 | atomic_set(&sdp->sd_log_thresh2, 4*sdp->sd_jdesc->jd_blocks/5); | |
da6dd40d BP |
687 | |
688 | /* Map the extents for this journal's blocks */ | |
b50f227b | 689 | gfs2_map_journal_extents(sdp, sdp->sd_jdesc); |
b3b94faa | 690 | } |
63997775 | 691 | trace_gfs2_log_blocks(sdp, atomic_read(&sdp->sd_log_blks_free)); |
b3b94faa DT |
692 | |
693 | if (sdp->sd_lockstruct.ls_first) { | |
694 | unsigned int x; | |
695 | for (x = 0; x < sdp->sd_journals; x++) { | |
1d12d175 BP |
696 | struct gfs2_jdesc *jd = gfs2_jdesc_find(sdp, x); |
697 | ||
698 | if (sdp->sd_args.ar_spectator) { | |
7d9f9249 | 699 | error = check_journal_clean(sdp, jd, true); |
1d12d175 BP |
700 | if (error) |
701 | goto fail_jinode_gh; | |
702 | continue; | |
703 | } | |
704 | error = gfs2_recover_journal(jd, true); | |
b3b94faa DT |
705 | if (error) { |
706 | fs_err(sdp, "error recovering journal %u: %d\n", | |
707 | x, error); | |
708 | goto fail_jinode_gh; | |
709 | } | |
710 | } | |
711 | ||
f057f6cd | 712 | gfs2_others_may_mount(sdp); |
b3b94faa | 713 | } else if (!sdp->sd_args.ar_spectator) { |
6ecd7c2d | 714 | error = gfs2_recover_journal(sdp->sd_jdesc, true); |
b3b94faa DT |
715 | if (error) { |
716 | fs_err(sdp, "error recovering my journal: %d\n", error); | |
717 | goto fail_jinode_gh; | |
718 | } | |
719 | } | |
720 | ||
086cc672 | 721 | sdp->sd_log_idle = 1; |
b3b94faa DT |
722 | set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); |
723 | gfs2_glock_dq_uninit(&ji_gh); | |
724 | jindex = 0; | |
2e60d768 | 725 | INIT_WORK(&sdp->sd_freeze_work, gfs2_freeze_func); |
b3b94faa DT |
726 | return 0; |
727 | ||
a91ea69f | 728 | fail_jinode_gh: |
601ef0d5 BP |
729 | /* A withdraw may have done dq/uninit so now we need to check it */ |
730 | if (!sdp->sd_args.ar_spectator && | |
731 | gfs2_holder_initialized(&sdp->sd_jinode_gh)) | |
b3b94faa | 732 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); |
a91ea69f | 733 | fail_journal_gh: |
601ef0d5 BP |
734 | if (!sdp->sd_args.ar_spectator && |
735 | gfs2_holder_initialized(&sdp->sd_journal_gh)) | |
b3b94faa | 736 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); |
a91ea69f | 737 | fail_jindex: |
b3b94faa DT |
738 | gfs2_jindex_free(sdp); |
739 | if (jindex) | |
740 | gfs2_glock_dq_uninit(&ji_gh); | |
a91ea69f | 741 | fail: |
f42faf4f | 742 | iput(sdp->sd_jindex); |
b3b94faa DT |
743 | return error; |
744 | } | |
745 | ||
56aa72d0 | 746 | static struct lock_class_key gfs2_quota_imutex_key; |
b3b94faa DT |
747 | |
748 | static int init_inodes(struct gfs2_sbd *sdp, int undo) | |
749 | { | |
b3b94faa | 750 | int error = 0; |
2b0143b5 | 751 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
752 | |
753 | if (undo) | |
f42faf4f SW |
754 | goto fail_qinode; |
755 | ||
f42faf4f | 756 | error = init_journal(sdp, undo); |
0e48e055 | 757 | complete_all(&sdp->sd_journal_ready); |
f42faf4f | 758 | if (error) |
9b8df98f | 759 | goto fail; |
b3b94faa | 760 | |
b3b94faa | 761 | /* Read in the master statfs inode */ |
9b8df98f | 762 | sdp->sd_statfs_inode = gfs2_lookup_simple(master, "statfs"); |
c752666c SW |
763 | if (IS_ERR(sdp->sd_statfs_inode)) { |
764 | error = PTR_ERR(sdp->sd_statfs_inode); | |
b3b94faa | 765 | fs_err(sdp, "can't read in statfs inode: %d\n", error); |
8d8291ae | 766 | goto fail_journal; |
b3b94faa DT |
767 | } |
768 | ||
769 | /* Read in the resource index inode */ | |
9b8df98f | 770 | sdp->sd_rindex = gfs2_lookup_simple(master, "rindex"); |
c752666c SW |
771 | if (IS_ERR(sdp->sd_rindex)) { |
772 | error = PTR_ERR(sdp->sd_rindex); | |
b3b94faa DT |
773 | fs_err(sdp, "can't get resource index inode: %d\n", error); |
774 | goto fail_statfs; | |
775 | } | |
cf45b752 | 776 | sdp->sd_rindex_uptodate = 0; |
b3b94faa DT |
777 | |
778 | /* Read in the quota inode */ | |
9b8df98f | 779 | sdp->sd_quota_inode = gfs2_lookup_simple(master, "quota"); |
c752666c SW |
780 | if (IS_ERR(sdp->sd_quota_inode)) { |
781 | error = PTR_ERR(sdp->sd_quota_inode); | |
b3b94faa DT |
782 | fs_err(sdp, "can't get quota file inode: %d\n", error); |
783 | goto fail_rindex; | |
784 | } | |
56aa72d0 | 785 | /* |
3e7aafc3 | 786 | * i_rwsem on quota files is special. Since this inode is hidden system |
56aa72d0 JK |
787 | * file, we are safe to define locking ourselves. |
788 | */ | |
9902af79 | 789 | lockdep_set_class(&sdp->sd_quota_inode->i_rwsem, |
56aa72d0 | 790 | &gfs2_quota_imutex_key); |
a365fbf3 SW |
791 | |
792 | error = gfs2_rindex_update(sdp); | |
793 | if (error) | |
794 | goto fail_qinode; | |
795 | ||
b3b94faa DT |
796 | return 0; |
797 | ||
f42faf4f SW |
798 | fail_qinode: |
799 | iput(sdp->sd_quota_inode); | |
f42faf4f | 800 | fail_rindex: |
b3b94faa | 801 | gfs2_clear_rgrpd(sdp); |
f42faf4f | 802 | iput(sdp->sd_rindex); |
f42faf4f SW |
803 | fail_statfs: |
804 | iput(sdp->sd_statfs_inode); | |
f42faf4f SW |
805 | fail_journal: |
806 | init_journal(sdp, UNDO); | |
f42faf4f | 807 | fail: |
b3b94faa DT |
808 | return error; |
809 | } | |
810 | ||
811 | static int init_per_node(struct gfs2_sbd *sdp, int undo) | |
812 | { | |
f42faf4f | 813 | struct inode *pn = NULL; |
b3b94faa DT |
814 | char buf[30]; |
815 | int error = 0; | |
5c676f6d | 816 | struct gfs2_inode *ip; |
2b0143b5 | 817 | struct inode *master = d_inode(sdp->sd_master_dir); |
b3b94faa DT |
818 | |
819 | if (sdp->sd_args.ar_spectator) | |
820 | return 0; | |
821 | ||
822 | if (undo) | |
823 | goto fail_qc_gh; | |
824 | ||
9b8df98f | 825 | pn = gfs2_lookup_simple(master, "per_node"); |
c752666c SW |
826 | if (IS_ERR(pn)) { |
827 | error = PTR_ERR(pn); | |
b3b94faa DT |
828 | fs_err(sdp, "can't find per_node directory: %d\n", error); |
829 | return error; | |
830 | } | |
831 | ||
b3b94faa | 832 | sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
833 | sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf); |
834 | if (IS_ERR(sdp->sd_sc_inode)) { | |
835 | error = PTR_ERR(sdp->sd_sc_inode); | |
b3b94faa | 836 | fs_err(sdp, "can't find local \"sc\" file: %d\n", error); |
8d8291ae | 837 | goto fail; |
b3b94faa DT |
838 | } |
839 | ||
b3b94faa | 840 | sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid); |
c752666c SW |
841 | sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf); |
842 | if (IS_ERR(sdp->sd_qc_inode)) { | |
843 | error = PTR_ERR(sdp->sd_qc_inode); | |
b3b94faa DT |
844 | fs_err(sdp, "can't find local \"qc\" file: %d\n", error); |
845 | goto fail_ut_i; | |
846 | } | |
847 | ||
f42faf4f | 848 | iput(pn); |
b3b94faa DT |
849 | pn = NULL; |
850 | ||
feaa7bba | 851 | ip = GFS2_I(sdp->sd_sc_inode); |
8d8291ae | 852 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
853 | &sdp->sd_sc_gh); |
854 | if (error) { | |
855 | fs_err(sdp, "can't lock local \"sc\" file: %d\n", error); | |
8d8291ae | 856 | goto fail_qc_i; |
b3b94faa DT |
857 | } |
858 | ||
feaa7bba | 859 | ip = GFS2_I(sdp->sd_qc_inode); |
8d8291ae | 860 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, |
b3b94faa DT |
861 | &sdp->sd_qc_gh); |
862 | if (error) { | |
863 | fs_err(sdp, "can't lock local \"qc\" file: %d\n", error); | |
864 | goto fail_ut_gh; | |
865 | } | |
866 | ||
867 | return 0; | |
868 | ||
a91ea69f | 869 | fail_qc_gh: |
b3b94faa | 870 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); |
a91ea69f | 871 | fail_ut_gh: |
b3b94faa | 872 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
a91ea69f | 873 | fail_qc_i: |
f42faf4f | 874 | iput(sdp->sd_qc_inode); |
a91ea69f | 875 | fail_ut_i: |
f42faf4f | 876 | iput(sdp->sd_sc_inode); |
a91ea69f | 877 | fail: |
6fde2242 | 878 | iput(pn); |
b3b94faa DT |
879 | return error; |
880 | } | |
881 | ||
f057f6cd SW |
882 | static const match_table_t nolock_tokens = { |
883 | { Opt_jid, "jid=%d\n", }, | |
884 | { Opt_err, NULL }, | |
885 | }; | |
886 | ||
887 | static const struct lm_lockops nolock_ops = { | |
888 | .lm_proto_name = "lock_nolock", | |
fc0e38da | 889 | .lm_put_lock = gfs2_glock_free, |
f057f6cd SW |
890 | .lm_tokens = &nolock_tokens, |
891 | }; | |
892 | ||
da755fdb SW |
893 | /** |
894 | * gfs2_lm_mount - mount a locking protocol | |
895 | * @sdp: the filesystem | |
3ad2f3fb | 896 | * @args: mount arguments |
da755fdb SW |
897 | * @silent: if 1, don't complain if the FS isn't a GFS2 fs |
898 | * | |
899 | * Returns: errno | |
900 | */ | |
901 | ||
902 | static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent) | |
903 | { | |
f057f6cd SW |
904 | const struct lm_lockops *lm; |
905 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; | |
906 | struct gfs2_args *args = &sdp->sd_args; | |
907 | const char *proto = sdp->sd_proto_name; | |
908 | const char *table = sdp->sd_table_name; | |
f057f6cd SW |
909 | char *o, *options; |
910 | int ret; | |
da755fdb | 911 | |
f057f6cd SW |
912 | if (!strcmp("lock_nolock", proto)) { |
913 | lm = &nolock_ops; | |
914 | sdp->sd_args.ar_localflocks = 1; | |
f057f6cd SW |
915 | #ifdef CONFIG_GFS2_FS_LOCKING_DLM |
916 | } else if (!strcmp("lock_dlm", proto)) { | |
917 | lm = &gfs2_dlm_ops; | |
918 | #endif | |
919 | } else { | |
d77d1b58 | 920 | pr_info("can't find protocol %s\n", proto); |
f057f6cd SW |
921 | return -ENOENT; |
922 | } | |
da755fdb SW |
923 | |
924 | fs_info(sdp, "Trying to join cluster \"%s\", \"%s\"\n", proto, table); | |
925 | ||
f057f6cd SW |
926 | ls->ls_ops = lm; |
927 | ls->ls_first = 1; | |
da755fdb | 928 | |
f057f6cd SW |
929 | for (options = args->ar_hostdata; (o = strsep(&options, ":")); ) { |
930 | substring_t tmp[MAX_OPT_ARGS]; | |
931 | int token, option; | |
932 | ||
933 | if (!o || !*o) | |
934 | continue; | |
935 | ||
936 | token = match_token(o, *lm->lm_tokens, tmp); | |
937 | switch (token) { | |
938 | case Opt_jid: | |
939 | ret = match_int(&tmp[0], &option); | |
940 | if (ret || option < 0) | |
941 | goto hostdata_error; | |
ba6e9364 SW |
942 | if (test_and_clear_bit(SDF_NOJOURNALID, &sdp->sd_flags)) |
943 | ls->ls_jid = option; | |
f057f6cd SW |
944 | break; |
945 | case Opt_id: | |
4875647a | 946 | case Opt_nodir: |
2b88f7c5 | 947 | /* Obsolete, but left for backward compat purposes */ |
f057f6cd SW |
948 | break; |
949 | case Opt_first: | |
950 | ret = match_int(&tmp[0], &option); | |
951 | if (ret || (option != 0 && option != 1)) | |
952 | goto hostdata_error; | |
953 | ls->ls_first = option; | |
954 | break; | |
f057f6cd SW |
955 | case Opt_err: |
956 | default: | |
957 | hostdata_error: | |
958 | fs_info(sdp, "unknown hostdata (%s)\n", o); | |
959 | return -EINVAL; | |
960 | } | |
da755fdb SW |
961 | } |
962 | ||
f057f6cd SW |
963 | if (lm->lm_mount == NULL) { |
964 | fs_info(sdp, "Now mounting FS...\n"); | |
19237039 | 965 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 966 | return 0; |
da755fdb | 967 | } |
e0c2a9aa | 968 | ret = lm->lm_mount(sdp, table); |
f057f6cd SW |
969 | if (ret == 0) |
970 | fs_info(sdp, "Joined cluster. Now mounting FS...\n"); | |
19237039 | 971 | complete_all(&sdp->sd_locking_init); |
f057f6cd | 972 | return ret; |
da755fdb SW |
973 | } |
974 | ||
975 | void gfs2_lm_unmount(struct gfs2_sbd *sdp) | |
976 | { | |
f057f6cd | 977 | const struct lm_lockops *lm = sdp->sd_lockstruct.ls_ops; |
eb43e660 | 978 | if (likely(!gfs2_withdrawn(sdp)) && lm->lm_unmount) |
f057f6cd | 979 | lm->lm_unmount(sdp); |
da755fdb | 980 | } |
b3b94faa | 981 | |
ba6e9364 SW |
982 | static int wait_on_journal(struct gfs2_sbd *sdp) |
983 | { | |
ba6e9364 SW |
984 | if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL) |
985 | return 0; | |
986 | ||
74316201 N |
987 | return wait_on_bit(&sdp->sd_flags, SDF_NOJOURNALID, TASK_INTERRUPTIBLE) |
988 | ? -EINTR : 0; | |
ba6e9364 SW |
989 | } |
990 | ||
8633ecfa SW |
991 | void gfs2_online_uevent(struct gfs2_sbd *sdp) |
992 | { | |
993 | struct super_block *sb = sdp->sd_vfs; | |
994 | char ro[20]; | |
995 | char spectator[20]; | |
996 | char *envp[] = { ro, spectator, NULL }; | |
bc98a42c | 997 | sprintf(ro, "RDONLY=%d", sb_rdonly(sb)); |
8633ecfa SW |
998 | sprintf(spectator, "SPECTATOR=%d", sdp->sd_args.ar_spectator ? 1 : 0); |
999 | kobject_uevent_env(&sdp->sd_kobj, KOBJ_ONLINE, envp); | |
1000 | } | |
1001 | ||
b3b94faa | 1002 | /** |
1f52aa08 | 1003 | * gfs2_fill_super - Read in superblock |
b3b94faa | 1004 | * @sb: The VFS superblock |
1f52aa08 | 1005 | * @args: Mount options |
b3b94faa DT |
1006 | * @silent: Don't complain if it's not a GFS2 filesystem |
1007 | * | |
1f52aa08 | 1008 | * Returns: -errno |
b3b94faa | 1009 | */ |
1f52aa08 | 1010 | static int gfs2_fill_super(struct super_block *sb, struct fs_context *fc) |
b3b94faa | 1011 | { |
1f52aa08 AP |
1012 | struct gfs2_args *args = fc->fs_private; |
1013 | int silent = fc->sb_flags & SB_SILENT; | |
b3b94faa DT |
1014 | struct gfs2_sbd *sdp; |
1015 | struct gfs2_holder mount_gh; | |
1016 | int error; | |
1017 | ||
1018 | sdp = init_sbd(sb); | |
1019 | if (!sdp) { | |
d77d1b58 | 1020 | pr_warn("can't alloc struct gfs2_sbd\n"); |
b3b94faa DT |
1021 | return -ENOMEM; |
1022 | } | |
f55073ff | 1023 | sdp->sd_args = *args; |
b3b94faa | 1024 | |
fe64d517 | 1025 | if (sdp->sd_args.ar_spectator) { |
1751e8a6 | 1026 | sb->s_flags |= SB_RDONLY; |
e8ca5cc5 | 1027 | set_bit(SDF_RORECOVERY, &sdp->sd_flags); |
fe64d517 | 1028 | } |
6f04c1c7 | 1029 | if (sdp->sd_args.ar_posix_acl) |
1751e8a6 | 1030 | sb->s_flags |= SB_POSIXACL; |
f25934c5 CH |
1031 | if (sdp->sd_args.ar_nobarrier) |
1032 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
6f04c1c7 | 1033 | |
1751e8a6 | 1034 | sb->s_flags |= SB_NOSEC; |
719ee344 SW |
1035 | sb->s_magic = GFS2_MAGIC; |
1036 | sb->s_op = &gfs2_super_ops; | |
41ced6dc | 1037 | sb->s_d_op = &gfs2_dops; |
719ee344 | 1038 | sb->s_export_op = &gfs2_export_ops; |
40b78a32 | 1039 | sb->s_xattr = gfs2_xattr_handlers; |
cc632e7f | 1040 | sb->s_qcop = &gfs2_quotactl_ops; |
de3b08d3 | 1041 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
cc632e7f | 1042 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE; |
719ee344 SW |
1043 | sb->s_time_gran = 1; |
1044 | sb->s_maxbytes = MAX_LFS_FILESIZE; | |
419c93e0 SW |
1045 | |
1046 | /* Set up the buffer cache and fill in some fake block size values | |
1047 | to allow us to read-in the on-disk superblock. */ | |
1048 | sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK); | |
1049 | sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits; | |
1050 | sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - | |
1051 | GFS2_BASIC_BLOCK_SHIFT; | |
47a9a527 | 1052 | sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift); |
b3b94faa | 1053 | |
5e687eac | 1054 | sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit; |
3d3c10f2 BM |
1055 | sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum; |
1056 | if (sdp->sd_args.ar_statfs_quantum) { | |
1057 | sdp->sd_tune.gt_statfs_slow = 0; | |
1058 | sdp->sd_tune.gt_statfs_quantum = sdp->sd_args.ar_statfs_quantum; | |
32e471ef | 1059 | } else { |
3d3c10f2 BM |
1060 | sdp->sd_tune.gt_statfs_slow = 1; |
1061 | sdp->sd_tune.gt_statfs_quantum = 30; | |
1062 | } | |
48c2b613 | 1063 | |
b3b94faa | 1064 | error = init_names(sdp, silent); |
0d515210 BP |
1065 | if (error) { |
1066 | /* In this case, we haven't initialized sysfs, so we have to | |
1067 | manually free the sdp. */ | |
2a27b755 | 1068 | free_sbd(sdp); |
0d515210 BP |
1069 | sb->s_fs_info = NULL; |
1070 | return error; | |
1071 | } | |
b3b94faa | 1072 | |
561b7969 | 1073 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s", sdp->sd_table_name); |
e0c2a9aa | 1074 | |
b3b94faa | 1075 | error = gfs2_sys_fs_add(sdp); |
0d515210 BP |
1076 | /* |
1077 | * If we hit an error here, gfs2_sys_fs_add will have called function | |
1078 | * kobject_put which causes the sysfs usage count to go to zero, which | |
1079 | * causes sysfs to call function gfs2_sbd_release, which frees sdp. | |
1080 | * Subsequent error paths here will call gfs2_sys_fs_del, which also | |
1081 | * kobject_put to free sdp. | |
1082 | */ | |
b3b94faa | 1083 | if (error) |
0d515210 BP |
1084 | return error; |
1085 | ||
1086 | gfs2_create_debugfs_file(sdp); | |
b3b94faa DT |
1087 | |
1088 | error = gfs2_lm_mount(sdp, silent); | |
1089 | if (error) | |
0d515210 | 1090 | goto fail_debug; |
b3b94faa DT |
1091 | |
1092 | error = init_locking(sdp, &mount_gh, DO); | |
1093 | if (error) | |
1094 | goto fail_lm; | |
1095 | ||
9b8df98f | 1096 | error = init_sb(sdp, silent); |
b3b94faa DT |
1097 | if (error) |
1098 | goto fail_locking; | |
b3b94faa | 1099 | |
ba6e9364 SW |
1100 | error = wait_on_journal(sdp); |
1101 | if (error) | |
1102 | goto fail_sb; | |
1103 | ||
feb47ca9 SW |
1104 | /* |
1105 | * If user space has failed to join the cluster or some similar | |
1106 | * failure has occurred, then the journal id will contain a | |
1107 | * negative (error) number. This will then be returned to the | |
1108 | * caller (of the mount syscall). We do this even for spectator | |
1109 | * mounts (which just write a jid of 0 to indicate "ok" even though | |
1110 | * the jid is unused in the spectator case) | |
1111 | */ | |
1112 | if (sdp->sd_lockstruct.ls_jid < 0) { | |
1113 | error = sdp->sd_lockstruct.ls_jid; | |
1114 | sdp->sd_lockstruct.ls_jid = 0; | |
1115 | goto fail_sb; | |
1116 | } | |
1117 | ||
e0c2a9aa | 1118 | if (sdp->sd_args.ar_spectator) |
561b7969 | 1119 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.s", |
e0c2a9aa DT |
1120 | sdp->sd_table_name); |
1121 | else | |
561b7969 | 1122 | snprintf(sdp->sd_fsname, sizeof(sdp->sd_fsname), "%s.%u", |
e0c2a9aa DT |
1123 | sdp->sd_table_name, sdp->sd_lockstruct.ls_jid); |
1124 | ||
b3b94faa DT |
1125 | error = init_inodes(sdp, DO); |
1126 | if (error) | |
f42faf4f | 1127 | goto fail_sb; |
b3b94faa DT |
1128 | |
1129 | error = init_per_node(sdp, DO); | |
1130 | if (error) | |
1131 | goto fail_inodes; | |
1132 | ||
1133 | error = gfs2_statfs_init(sdp); | |
1134 | if (error) { | |
1135 | fs_err(sdp, "can't initialize statfs subsystem: %d\n", error); | |
1136 | goto fail_per_node; | |
1137 | } | |
1138 | ||
bc98a42c | 1139 | if (!sb_rdonly(sb)) { |
b3b94faa DT |
1140 | error = gfs2_make_fs_rw(sdp); |
1141 | if (error) { | |
1142 | fs_err(sdp, "can't make FS RW: %d\n", error); | |
8ad151c2 | 1143 | goto fail_per_node; |
b3b94faa DT |
1144 | } |
1145 | } | |
1146 | ||
1147 | gfs2_glock_dq_uninit(&mount_gh); | |
8633ecfa | 1148 | gfs2_online_uevent(sdp); |
b3b94faa DT |
1149 | return 0; |
1150 | ||
a91ea69f | 1151 | fail_per_node: |
b3b94faa | 1152 | init_per_node(sdp, UNDO); |
a91ea69f | 1153 | fail_inodes: |
b3b94faa | 1154 | init_inodes(sdp, UNDO); |
a91ea69f | 1155 | fail_sb: |
9b8df98f SW |
1156 | if (sdp->sd_root_dir) |
1157 | dput(sdp->sd_root_dir); | |
1158 | if (sdp->sd_master_dir) | |
1159 | dput(sdp->sd_master_dir); | |
e7c8707e SW |
1160 | if (sb->s_root) |
1161 | dput(sb->s_root); | |
9b8df98f | 1162 | sb->s_root = NULL; |
a91ea69f | 1163 | fail_locking: |
b3b94faa | 1164 | init_locking(sdp, &mount_gh, UNDO); |
a91ea69f | 1165 | fail_lm: |
0e48e055 | 1166 | complete_all(&sdp->sd_journal_ready); |
fefc03bf | 1167 | gfs2_gl_hash_clear(sdp); |
b3b94faa | 1168 | gfs2_lm_unmount(sdp); |
0d515210 | 1169 | fail_debug: |
5f882096 | 1170 | gfs2_delete_debugfs_file(sdp); |
0d515210 BP |
1171 | /* gfs2_sys_fs_del must be the last thing we do, since it causes |
1172 | * sysfs to call function gfs2_sbd_release, which frees sdp. */ | |
1173 | gfs2_sys_fs_del(sdp); | |
5c676f6d | 1174 | sb->s_fs_info = NULL; |
b3b94faa DT |
1175 | return error; |
1176 | } | |
1177 | ||
1f52aa08 AP |
1178 | /** |
1179 | * gfs2_get_tree - Get the GFS2 superblock and root directory | |
1180 | * @fc: The filesystem context | |
1181 | * | |
1182 | * Returns: 0 or -errno on error | |
1183 | */ | |
1184 | static int gfs2_get_tree(struct fs_context *fc) | |
b3b94faa | 1185 | { |
1f52aa08 AP |
1186 | struct gfs2_args *args = fc->fs_private; |
1187 | struct gfs2_sbd *sdp; | |
1188 | int error; | |
1189 | ||
1190 | error = get_tree_bdev(fc, gfs2_fill_super); | |
1191 | if (error) | |
1192 | return error; | |
1193 | ||
1194 | sdp = fc->root->d_sb->s_fs_info; | |
1195 | dput(fc->root); | |
1196 | if (args->ar_meta) | |
1197 | fc->root = dget(sdp->sd_master_dir); | |
1198 | else | |
1199 | fc->root = dget(sdp->sd_root_dir); | |
f55073ff | 1200 | return 0; |
86384605 AD |
1201 | } |
1202 | ||
1f52aa08 | 1203 | static void gfs2_fc_free(struct fs_context *fc) |
f6d03139 | 1204 | { |
1f52aa08 AP |
1205 | struct gfs2_args *args = fc->fs_private; |
1206 | ||
1207 | kfree(args); | |
f6d03139 SW |
1208 | } |
1209 | ||
1f52aa08 AP |
1210 | enum gfs2_param { |
1211 | Opt_lockproto, | |
1212 | Opt_locktable, | |
1213 | Opt_hostdata, | |
1214 | Opt_spectator, | |
1215 | Opt_ignore_local_fs, | |
1216 | Opt_localflocks, | |
1217 | Opt_localcaching, | |
1218 | Opt_debug, | |
1219 | Opt_upgrade, | |
1220 | Opt_acl, | |
1221 | Opt_quota, | |
48ce73b1 | 1222 | Opt_quota_flag, |
1f52aa08 AP |
1223 | Opt_suiddir, |
1224 | Opt_data, | |
1225 | Opt_meta, | |
1226 | Opt_discard, | |
1227 | Opt_commit, | |
1228 | Opt_errors, | |
1229 | Opt_statfs_quantum, | |
1230 | Opt_statfs_percent, | |
1231 | Opt_quota_quantum, | |
1232 | Opt_barrier, | |
1233 | Opt_rgrplvb, | |
1234 | Opt_loccookie, | |
1235 | }; | |
f55073ff | 1236 | |
5eede625 | 1237 | static const struct constant_table gfs2_param_quota[] = { |
48ce73b1 AV |
1238 | {"off", GFS2_QUOTA_OFF}, |
1239 | {"account", GFS2_QUOTA_ACCOUNT}, | |
1240 | {"on", GFS2_QUOTA_ON}, | |
2710c957 | 1241 | {} |
1f52aa08 | 1242 | }; |
f55073ff | 1243 | |
1f52aa08 AP |
1244 | enum opt_data { |
1245 | Opt_data_writeback = GFS2_DATA_WRITEBACK, | |
1246 | Opt_data_ordered = GFS2_DATA_ORDERED, | |
1247 | }; | |
f55073ff | 1248 | |
5eede625 | 1249 | static const struct constant_table gfs2_param_data[] = { |
2710c957 AV |
1250 | {"writeback", Opt_data_writeback }, |
1251 | {"ordered", Opt_data_ordered }, | |
1252 | {} | |
1253 | }; | |
1254 | ||
1f52aa08 AP |
1255 | enum opt_errors { |
1256 | Opt_errors_withdraw = GFS2_ERRORS_WITHDRAW, | |
1257 | Opt_errors_panic = GFS2_ERRORS_PANIC, | |
1258 | }; | |
f55073ff | 1259 | |
5eede625 | 1260 | static const struct constant_table gfs2_param_errors[] = { |
2710c957 AV |
1261 | {"withdraw", Opt_errors_withdraw }, |
1262 | {"panic", Opt_errors_panic }, | |
1263 | {} | |
1264 | }; | |
1265 | ||
d7167b14 | 1266 | static const struct fs_parameter_spec gfs2_fs_parameters[] = { |
1f52aa08 AP |
1267 | fsparam_string ("lockproto", Opt_lockproto), |
1268 | fsparam_string ("locktable", Opt_locktable), | |
1269 | fsparam_string ("hostdata", Opt_hostdata), | |
1270 | fsparam_flag ("spectator", Opt_spectator), | |
1271 | fsparam_flag ("norecovery", Opt_spectator), | |
1272 | fsparam_flag ("ignore_local_fs", Opt_ignore_local_fs), | |
1273 | fsparam_flag ("localflocks", Opt_localflocks), | |
1274 | fsparam_flag ("localcaching", Opt_localcaching), | |
1275 | fsparam_flag_no("debug", Opt_debug), | |
1276 | fsparam_flag ("upgrade", Opt_upgrade), | |
1277 | fsparam_flag_no("acl", Opt_acl), | |
1278 | fsparam_flag_no("suiddir", Opt_suiddir), | |
2710c957 | 1279 | fsparam_enum ("data", Opt_data, gfs2_param_data), |
1f52aa08 AP |
1280 | fsparam_flag ("meta", Opt_meta), |
1281 | fsparam_flag_no("discard", Opt_discard), | |
1282 | fsparam_s32 ("commit", Opt_commit), | |
2710c957 | 1283 | fsparam_enum ("errors", Opt_errors, gfs2_param_errors), |
1f52aa08 AP |
1284 | fsparam_s32 ("statfs_quantum", Opt_statfs_quantum), |
1285 | fsparam_s32 ("statfs_percent", Opt_statfs_percent), | |
1286 | fsparam_s32 ("quota_quantum", Opt_quota_quantum), | |
1287 | fsparam_flag_no("barrier", Opt_barrier), | |
1288 | fsparam_flag_no("rgrplvb", Opt_rgrplvb), | |
1289 | fsparam_flag_no("loccookie", Opt_loccookie), | |
1290 | /* quota can be a flag or an enum so it gets special treatment */ | |
48ce73b1 AV |
1291 | fsparam_flag_no("quota", Opt_quota_flag), |
1292 | fsparam_enum("quota", Opt_quota, gfs2_param_quota), | |
1f52aa08 AP |
1293 | {} |
1294 | }; | |
f55073ff | 1295 | |
1f52aa08 AP |
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 | ||
d7167b14 | 1303 | o = fs_parse(fc, gfs2_fs_parameters, param, &result); |
1f52aa08 AP |
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) | |
77cb271e | 1331 | return invalfc(fc, "-o debug and -o errors=panic are mutually exclusive"); |
1f52aa08 AP |
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; | |
48ce73b1 AV |
1340 | case Opt_quota_flag: |
1341 | args->ar_quota = result.negated ? GFS2_QUOTA_OFF : GFS2_QUOTA_ON; | |
1342 | break; | |
1f52aa08 | 1343 | case Opt_quota: |
48ce73b1 | 1344 | args->ar_quota = result.int_32; |
1f52aa08 AP |
1345 | break; |
1346 | case Opt_suiddir: | |
1347 | args->ar_suiddir = result.boolean; | |
1348 | break; | |
1349 | case Opt_data: | |
1350 | /* The uint_32 result maps directly to GFS2_DATA_* */ | |
1351 | args->ar_data = result.uint_32; | |
1352 | break; | |
1353 | case Opt_meta: | |
1354 | args->ar_meta = 1; | |
1355 | break; | |
1356 | case Opt_discard: | |
1357 | args->ar_discard = result.boolean; | |
1358 | break; | |
1359 | case Opt_commit: | |
1360 | if (result.int_32 <= 0) | |
77cb271e | 1361 | return invalfc(fc, "commit mount option requires a positive numeric argument"); |
1f52aa08 AP |
1362 | args->ar_commit = result.int_32; |
1363 | break; | |
1364 | case Opt_statfs_quantum: | |
1365 | if (result.int_32 < 0) | |
77cb271e | 1366 | return invalfc(fc, "statfs_quantum mount option requires a non-negative numeric argument"); |
1f52aa08 AP |
1367 | args->ar_statfs_quantum = result.int_32; |
1368 | break; | |
1369 | case Opt_quota_quantum: | |
1370 | if (result.int_32 <= 0) | |
77cb271e | 1371 | return invalfc(fc, "quota_quantum mount option requires a positive numeric argument"); |
1f52aa08 AP |
1372 | args->ar_quota_quantum = result.int_32; |
1373 | break; | |
1374 | case Opt_statfs_percent: | |
1375 | if (result.int_32 < 0 || result.int_32 > 100) | |
77cb271e | 1376 | return invalfc(fc, "statfs_percent mount option requires a numeric argument between 0 and 100"); |
1f52aa08 AP |
1377 | args->ar_statfs_percent = result.int_32; |
1378 | break; | |
1379 | case Opt_errors: | |
1380 | if (args->ar_debug && result.uint_32 == GFS2_ERRORS_PANIC) | |
77cb271e | 1381 | return invalfc(fc, "-o debug and -o errors=panic are mutually exclusive"); |
1f52aa08 AP |
1382 | args->ar_errors = result.uint_32; |
1383 | break; | |
1384 | case Opt_barrier: | |
1385 | args->ar_nobarrier = result.boolean; | |
1386 | break; | |
1387 | case Opt_rgrplvb: | |
1388 | args->ar_rgrplvb = result.boolean; | |
1389 | break; | |
1390 | case Opt_loccookie: | |
1391 | args->ar_loccookie = result.boolean; | |
1392 | break; | |
1393 | default: | |
77cb271e | 1394 | return invalfc(fc, "invalid mount option: %s", param->key); |
f55073ff | 1395 | } |
1f52aa08 AP |
1396 | return 0; |
1397 | } | |
f55073ff | 1398 | |
1f52aa08 AP |
1399 | static int gfs2_reconfigure(struct fs_context *fc) |
1400 | { | |
1401 | struct super_block *sb = fc->root->d_sb; | |
1402 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1403 | struct gfs2_args *oldargs = &sdp->sd_args; | |
1404 | struct gfs2_args *newargs = fc->fs_private; | |
1405 | struct gfs2_tune *gt = &sdp->sd_tune; | |
1406 | int error = 0; | |
1407 | ||
1408 | sync_filesystem(sb); | |
1409 | ||
1410 | spin_lock(>->gt_spin); | |
1411 | oldargs->ar_commit = gt->gt_logd_secs; | |
1412 | oldargs->ar_quota_quantum = gt->gt_quota_quantum; | |
1413 | if (gt->gt_statfs_slow) | |
1414 | oldargs->ar_statfs_quantum = 0; | |
1415 | else | |
1416 | oldargs->ar_statfs_quantum = gt->gt_statfs_quantum; | |
1417 | spin_unlock(>->gt_spin); | |
1418 | ||
1419 | if (strcmp(newargs->ar_lockproto, oldargs->ar_lockproto)) { | |
77cb271e | 1420 | errorfc(fc, "reconfiguration of locking protocol not allowed"); |
1f52aa08 AP |
1421 | return -EINVAL; |
1422 | } | |
1423 | if (strcmp(newargs->ar_locktable, oldargs->ar_locktable)) { | |
77cb271e | 1424 | errorfc(fc, "reconfiguration of lock table not allowed"); |
1f52aa08 AP |
1425 | return -EINVAL; |
1426 | } | |
1427 | if (strcmp(newargs->ar_hostdata, oldargs->ar_hostdata)) { | |
77cb271e | 1428 | errorfc(fc, "reconfiguration of host data not allowed"); |
1f52aa08 AP |
1429 | return -EINVAL; |
1430 | } | |
1431 | if (newargs->ar_spectator != oldargs->ar_spectator) { | |
77cb271e | 1432 | errorfc(fc, "reconfiguration of spectator mode not allowed"); |
1f52aa08 AP |
1433 | return -EINVAL; |
1434 | } | |
1435 | if (newargs->ar_localflocks != oldargs->ar_localflocks) { | |
77cb271e | 1436 | errorfc(fc, "reconfiguration of localflocks not allowed"); |
1f52aa08 AP |
1437 | return -EINVAL; |
1438 | } | |
1439 | if (newargs->ar_meta != oldargs->ar_meta) { | |
77cb271e | 1440 | errorfc(fc, "switching between gfs2 and gfs2meta not allowed"); |
1f52aa08 AP |
1441 | return -EINVAL; |
1442 | } | |
1443 | if (oldargs->ar_spectator) | |
1444 | fc->sb_flags |= SB_RDONLY; | |
1445 | ||
1446 | if ((sb->s_flags ^ fc->sb_flags) & SB_RDONLY) { | |
1447 | if (fc->sb_flags & SB_RDONLY) { | |
1448 | error = gfs2_make_fs_ro(sdp); | |
1449 | if (error) | |
77cb271e | 1450 | errorfc(fc, "unable to remount read-only"); |
1f52aa08 AP |
1451 | } else { |
1452 | error = gfs2_make_fs_rw(sdp); | |
1453 | if (error) | |
77cb271e | 1454 | errorfc(fc, "unable to remount read-write"); |
1f52aa08 | 1455 | } |
f55073ff | 1456 | } |
1f52aa08 | 1457 | sdp->sd_args = *newargs; |
f55073ff | 1458 | |
1f52aa08 AP |
1459 | if (sdp->sd_args.ar_posix_acl) |
1460 | sb->s_flags |= SB_POSIXACL; | |
1461 | else | |
1462 | sb->s_flags &= ~SB_POSIXACL; | |
1463 | if (sdp->sd_args.ar_nobarrier) | |
1464 | set_bit(SDF_NOBARRIERS, &sdp->sd_flags); | |
f55073ff | 1465 | else |
1f52aa08 AP |
1466 | clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); |
1467 | spin_lock(>->gt_spin); | |
1468 | gt->gt_logd_secs = newargs->ar_commit; | |
1469 | gt->gt_quota_quantum = newargs->ar_quota_quantum; | |
1470 | if (newargs->ar_statfs_quantum) { | |
1471 | gt->gt_statfs_slow = 0; | |
1472 | gt->gt_statfs_quantum = newargs->ar_statfs_quantum; | |
1473 | } | |
1474 | else { | |
1475 | gt->gt_statfs_slow = 1; | |
1476 | gt->gt_statfs_quantum = 30; | |
1477 | } | |
1478 | spin_unlock(>->gt_spin); | |
1479 | ||
1480 | gfs2_online_uevent(sdp); | |
1481 | return error; | |
1482 | } | |
1483 | ||
1484 | static const struct fs_context_operations gfs2_context_ops = { | |
1485 | .free = gfs2_fc_free, | |
1486 | .parse_param = gfs2_parse_param, | |
1487 | .get_tree = gfs2_get_tree, | |
1488 | .reconfigure = gfs2_reconfigure, | |
1489 | }; | |
1490 | ||
1491 | /* Set up the filesystem mount context */ | |
1492 | static int gfs2_init_fs_context(struct fs_context *fc) | |
1493 | { | |
1494 | struct gfs2_args *args; | |
1495 | ||
d5798141 | 1496 | args = kmalloc(sizeof(*args), GFP_KERNEL); |
1f52aa08 AP |
1497 | if (args == NULL) |
1498 | return -ENOMEM; | |
1499 | ||
d5798141 AP |
1500 | if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE) { |
1501 | struct gfs2_sbd *sdp = fc->root->d_sb->s_fs_info; | |
1f52aa08 | 1502 | |
d5798141 AP |
1503 | *args = sdp->sd_args; |
1504 | } else { | |
1505 | memset(args, 0, sizeof(*args)); | |
1506 | args->ar_quota = GFS2_QUOTA_DEFAULT; | |
1507 | args->ar_data = GFS2_DATA_DEFAULT; | |
1508 | args->ar_commit = 30; | |
1509 | args->ar_statfs_quantum = 30; | |
1510 | args->ar_quota_quantum = 60; | |
1511 | args->ar_errors = GFS2_ERRORS_DEFAULT; | |
1512 | } | |
1f52aa08 AP |
1513 | fc->fs_private = args; |
1514 | fc->ops = &gfs2_context_ops; | |
1515 | return 0; | |
f55073ff SW |
1516 | } |
1517 | ||
1f52aa08 | 1518 | static int set_meta_super(struct super_block *s, struct fs_context *fc) |
f6d03139 SW |
1519 | { |
1520 | return -EINVAL; | |
1521 | } | |
1522 | ||
1f52aa08 AP |
1523 | static int test_meta_super(struct super_block *s, struct fs_context *fc) |
1524 | { | |
1525 | return (fc->sget_key == s->s_bdev); | |
1526 | } | |
1527 | ||
1528 | static int gfs2_meta_get_tree(struct fs_context *fc) | |
86384605 | 1529 | { |
f6d03139 | 1530 | struct super_block *s; |
003dec89 | 1531 | struct gfs2_sbd *sdp; |
e24977d4 | 1532 | struct path path; |
86384605 | 1533 | int error; |
907b9bce | 1534 | |
1f52aa08 AP |
1535 | if (!fc->source || !*fc->source) |
1536 | return -EINVAL; | |
3df629d8 | 1537 | |
1f52aa08 | 1538 | error = kern_path(fc->source, LOOKUP_FOLLOW, &path); |
86384605 | 1539 | if (error) { |
d77d1b58 | 1540 | pr_warn("path_lookup on %s returned error %d\n", |
1f52aa08 AP |
1541 | fc->source, error); |
1542 | return error; | |
86384605 | 1543 | } |
1f52aa08 AP |
1544 | fc->fs_type = &gfs2_fs_type; |
1545 | fc->sget_key = path.dentry->d_sb->s_bdev; | |
1546 | s = sget_fc(fc, test_meta_super, set_meta_super); | |
e24977d4 | 1547 | path_put(&path); |
f6d03139 | 1548 | if (IS_ERR(s)) { |
d77d1b58 | 1549 | pr_warn("gfs2 mount does not exist\n"); |
1f52aa08 | 1550 | return PTR_ERR(s); |
86384605 | 1551 | } |
1f52aa08 | 1552 | if ((fc->sb_flags ^ s->s_flags) & SB_RDONLY) { |
f55073ff | 1553 | deactivate_locked_super(s); |
1f52aa08 | 1554 | return -EBUSY; |
f55073ff | 1555 | } |
f6d03139 | 1556 | sdp = s->s_fs_info; |
1f52aa08 AP |
1557 | fc->root = dget(sdp->sd_master_dir); |
1558 | return 0; | |
1559 | } | |
1560 | ||
1561 | static const struct fs_context_operations gfs2_meta_context_ops = { | |
30aecae8 | 1562 | .free = gfs2_fc_free, |
1f52aa08 AP |
1563 | .get_tree = gfs2_meta_get_tree, |
1564 | }; | |
1565 | ||
1566 | static int gfs2_meta_init_fs_context(struct fs_context *fc) | |
1567 | { | |
1568 | int ret = gfs2_init_fs_context(fc); | |
1569 | ||
1570 | if (ret) | |
1571 | return ret; | |
1572 | ||
1573 | fc->ops = &gfs2_meta_context_ops; | |
1574 | return 0; | |
b3b94faa DT |
1575 | } |
1576 | ||
419c93e0 | 1577 | static void gfs2_kill_sb(struct super_block *sb) |
86384605 AD |
1578 | { |
1579 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
88a19ad0 SW |
1580 | |
1581 | if (sdp == NULL) { | |
1582 | kill_block_super(sb); | |
1583 | return; | |
3af165ac | 1584 | } |
88a19ad0 | 1585 | |
805c0907 | 1586 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SYNC | GFS2_LFC_KILL_SB); |
88a19ad0 SW |
1587 | dput(sdp->sd_root_dir); |
1588 | dput(sdp->sd_master_dir); | |
1589 | sdp->sd_root_dir = NULL; | |
1590 | sdp->sd_master_dir = NULL; | |
fefc03bf | 1591 | shrink_dcache_sb(sb); |
0d515210 | 1592 | kill_block_super(sb); |
86384605 AD |
1593 | } |
1594 | ||
b3b94faa DT |
1595 | struct file_system_type gfs2_fs_type = { |
1596 | .name = "gfs2", | |
1597 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1598 | .init_fs_context = gfs2_init_fs_context, |
d7167b14 | 1599 | .parameters = gfs2_fs_parameters, |
419c93e0 SW |
1600 | .kill_sb = gfs2_kill_sb, |
1601 | .owner = THIS_MODULE, | |
1602 | }; | |
7f78e035 | 1603 | MODULE_ALIAS_FS("gfs2"); |
419c93e0 SW |
1604 | |
1605 | struct file_system_type gfs2meta_fs_type = { | |
1606 | .name = "gfs2meta", | |
1607 | .fs_flags = FS_REQUIRES_DEV, | |
1f52aa08 | 1608 | .init_fs_context = gfs2_meta_init_fs_context, |
b3b94faa DT |
1609 | .owner = THIS_MODULE, |
1610 | }; | |
7f78e035 | 1611 | MODULE_ALIAS_FS("gfs2meta"); |