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328970de | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
ccd979bd MF |
2 | /* -*- mode: c; c-basic-offset: 8; -*- |
3 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
4 | * | |
5 | * inode.c | |
6 | * | |
7 | * vfs' aops, fops, dops and iops | |
8 | * | |
9 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
ccd979bd MF |
10 | */ |
11 | ||
12 | #include <linux/fs.h> | |
13 | #include <linux/types.h> | |
ccd979bd MF |
14 | #include <linux/highmem.h> |
15 | #include <linux/pagemap.h> | |
a90714c1 | 16 | #include <linux/quotaops.h> |
cc56c33e | 17 | #include <linux/iversion.h> |
ccd979bd MF |
18 | |
19 | #include <asm/byteorder.h> | |
20 | ||
ccd979bd MF |
21 | #include <cluster/masklog.h> |
22 | ||
23 | #include "ocfs2.h" | |
24 | ||
25 | #include "alloc.h" | |
9b7895ef | 26 | #include "dir.h" |
d6b32bbb | 27 | #include "blockcheck.h" |
ccd979bd MF |
28 | #include "dlmglue.h" |
29 | #include "extent_map.h" | |
30 | #include "file.h" | |
b4df6ed8 | 31 | #include "heartbeat.h" |
ccd979bd MF |
32 | #include "inode.h" |
33 | #include "journal.h" | |
34 | #include "namei.h" | |
35 | #include "suballoc.h" | |
36 | #include "super.h" | |
37 | #include "symlink.h" | |
38 | #include "sysfile.h" | |
39 | #include "uptodate.h" | |
cf1d6c76 | 40 | #include "xattr.h" |
8b2c0dba | 41 | #include "refcounttree.h" |
64f3b269 | 42 | #include "ocfs2_trace.h" |
d56a8f32 | 43 | #include "filecheck.h" |
ccd979bd MF |
44 | |
45 | #include "buffer_head_io.h" | |
46 | ||
ccd979bd MF |
47 | struct ocfs2_find_inode_args |
48 | { | |
49 | u64 fi_blkno; | |
50 | unsigned long fi_ino; | |
51 | unsigned int fi_flags; | |
5fa0613e | 52 | unsigned int fi_sysfile_type; |
ccd979bd MF |
53 | }; |
54 | ||
5fa0613e JK |
55 | static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES]; |
56 | ||
ccd979bd MF |
57 | static int ocfs2_read_locked_inode(struct inode *inode, |
58 | struct ocfs2_find_inode_args *args); | |
59 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque); | |
60 | static int ocfs2_find_actor(struct inode *inode, void *opaque); | |
61 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
62 | struct inode *inode, | |
63 | struct buffer_head *fe_bh); | |
64 | ||
d56a8f32 GH |
65 | static int ocfs2_filecheck_read_inode_block_full(struct inode *inode, |
66 | struct buffer_head **bh, | |
67 | int flags, int type); | |
68 | static int ocfs2_filecheck_validate_inode_block(struct super_block *sb, | |
69 | struct buffer_head *bh); | |
70 | static int ocfs2_filecheck_repair_inode_block(struct super_block *sb, | |
71 | struct buffer_head *bh); | |
72 | ||
ca4d147e HP |
73 | void ocfs2_set_inode_flags(struct inode *inode) |
74 | { | |
75 | unsigned int flags = OCFS2_I(inode)->ip_attr; | |
76 | ||
77 | inode->i_flags &= ~(S_IMMUTABLE | | |
78 | S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC); | |
79 | ||
80 | if (flags & OCFS2_IMMUTABLE_FL) | |
81 | inode->i_flags |= S_IMMUTABLE; | |
82 | ||
83 | if (flags & OCFS2_SYNC_FL) | |
84 | inode->i_flags |= S_SYNC; | |
85 | if (flags & OCFS2_APPEND_FL) | |
86 | inode->i_flags |= S_APPEND; | |
87 | if (flags & OCFS2_NOATIME_FL) | |
88 | inode->i_flags |= S_NOATIME; | |
89 | if (flags & OCFS2_DIRSYNC_FL) | |
90 | inode->i_flags |= S_DIRSYNC; | |
91 | } | |
92 | ||
6e4b0d56 JK |
93 | /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */ |
94 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi) | |
95 | { | |
96 | unsigned int flags = oi->vfs_inode.i_flags; | |
97 | ||
98 | oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL| | |
99 | OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL); | |
100 | if (flags & S_SYNC) | |
101 | oi->ip_attr |= OCFS2_SYNC_FL; | |
102 | if (flags & S_APPEND) | |
103 | oi->ip_attr |= OCFS2_APPEND_FL; | |
104 | if (flags & S_IMMUTABLE) | |
105 | oi->ip_attr |= OCFS2_IMMUTABLE_FL; | |
106 | if (flags & S_NOATIME) | |
107 | oi->ip_attr |= OCFS2_NOATIME_FL; | |
108 | if (flags & S_DIRSYNC) | |
109 | oi->ip_attr |= OCFS2_DIRSYNC_FL; | |
110 | } | |
111 | ||
6ca497a8 | 112 | struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno) |
113 | { | |
114 | struct ocfs2_find_inode_args args; | |
115 | ||
116 | args.fi_blkno = blkno; | |
117 | args.fi_flags = 0; | |
118 | args.fi_ino = ino_from_blkno(sb, blkno); | |
119 | args.fi_sysfile_type = 0; | |
120 | ||
121 | return ilookup5(sb, blkno, ocfs2_find_actor, &args); | |
122 | } | |
5fa0613e JK |
123 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, |
124 | int sysfile_type) | |
ccd979bd | 125 | { |
8c4d5a43 | 126 | int rc = -ESTALE; |
ccd979bd MF |
127 | struct inode *inode = NULL; |
128 | struct super_block *sb = osb->sb; | |
129 | struct ocfs2_find_inode_args args; | |
2931cdcb | 130 | journal_t *journal = OCFS2_SB(sb)->journal->j_journal; |
ccd979bd | 131 | |
64f3b269 TM |
132 | trace_ocfs2_iget_begin((unsigned long long)blkno, flags, |
133 | sysfile_type); | |
ccd979bd MF |
134 | |
135 | /* Ok. By now we've either got the offsets passed to us by the | |
136 | * caller, or we just pulled them off the bh. Lets do some | |
137 | * sanity checks to make sure they're OK. */ | |
138 | if (blkno == 0) { | |
139 | inode = ERR_PTR(-EINVAL); | |
140 | mlog_errno(PTR_ERR(inode)); | |
141 | goto bail; | |
142 | } | |
143 | ||
144 | args.fi_blkno = blkno; | |
24c19ef4 | 145 | args.fi_flags = flags; |
ccd979bd | 146 | args.fi_ino = ino_from_blkno(sb, blkno); |
5fa0613e | 147 | args.fi_sysfile_type = sysfile_type; |
ccd979bd MF |
148 | |
149 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, | |
150 | ocfs2_init_locked_inode, &args); | |
151 | /* inode was *not* in the inode cache. 2.6.x requires | |
152 | * us to do our own read_inode call and unlock it | |
153 | * afterwards. */ | |
ccd979bd MF |
154 | if (inode == NULL) { |
155 | inode = ERR_PTR(-ENOMEM); | |
156 | mlog_errno(PTR_ERR(inode)); | |
157 | goto bail; | |
158 | } | |
64f3b269 | 159 | trace_ocfs2_iget5_locked(inode->i_state); |
6218b90e | 160 | if (inode->i_state & I_NEW) { |
d56a8f32 | 161 | rc = ocfs2_read_locked_inode(inode, &args); |
6218b90e TM |
162 | unlock_new_inode(inode); |
163 | } | |
ccd979bd MF |
164 | if (is_bad_inode(inode)) { |
165 | iput(inode); | |
1f3a437f | 166 | inode = ERR_PTR(rc); |
ccd979bd MF |
167 | goto bail; |
168 | } | |
169 | ||
2931cdcb DW |
170 | /* |
171 | * Set transaction id's of transactions that have to be committed | |
172 | * to finish f[data]sync. We set them to currently running transaction | |
173 | * as we cannot be sure that the inode or some of its metadata isn't | |
174 | * part of the transaction - the inode could have been reclaimed and | |
175 | * now it is reread from disk. | |
176 | */ | |
177 | if (journal) { | |
178 | transaction_t *transaction; | |
179 | tid_t tid; | |
180 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
181 | ||
182 | read_lock(&journal->j_state_lock); | |
183 | if (journal->j_running_transaction) | |
184 | transaction = journal->j_running_transaction; | |
185 | else | |
186 | transaction = journal->j_committing_transaction; | |
187 | if (transaction) | |
188 | tid = transaction->t_tid; | |
189 | else | |
190 | tid = journal->j_commit_sequence; | |
191 | read_unlock(&journal->j_state_lock); | |
192 | oi->i_sync_tid = tid; | |
193 | oi->i_datasync_tid = tid; | |
194 | } | |
195 | ||
ccd979bd MF |
196 | bail: |
197 | if (!IS_ERR(inode)) { | |
64f3b269 TM |
198 | trace_ocfs2_iget_end(inode, |
199 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
6a1bd4a5 | 200 | } |
ccd979bd MF |
201 | |
202 | return inode; | |
203 | } | |
204 | ||
205 | ||
206 | /* | |
207 | * here's how inodes get read from disk: | |
208 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR | |
209 | * found? : return the in-memory inode | |
210 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE | |
211 | */ | |
212 | ||
213 | static int ocfs2_find_actor(struct inode *inode, void *opaque) | |
214 | { | |
215 | struct ocfs2_find_inode_args *args = NULL; | |
216 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
217 | int ret = 0; | |
218 | ||
ccd979bd MF |
219 | args = opaque; |
220 | ||
221 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); | |
222 | ||
64f3b269 TM |
223 | trace_ocfs2_find_actor(inode, inode->i_ino, opaque, args->fi_blkno); |
224 | ||
ccd979bd MF |
225 | if (oi->ip_blkno != args->fi_blkno) |
226 | goto bail; | |
227 | ||
ccd979bd MF |
228 | ret = 1; |
229 | bail: | |
ccd979bd MF |
230 | return ret; |
231 | } | |
232 | ||
233 | /* | |
234 | * initialize the new inode, but don't do anything that would cause | |
235 | * us to sleep. | |
236 | * return 0 on success, 1 on failure | |
237 | */ | |
238 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) | |
239 | { | |
240 | struct ocfs2_find_inode_args *args = opaque; | |
cb25797d JK |
241 | static struct lock_class_key ocfs2_quota_ip_alloc_sem_key, |
242 | ocfs2_file_ip_alloc_sem_key; | |
ccd979bd | 243 | |
ccd979bd MF |
244 | inode->i_ino = args->fi_ino; |
245 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; | |
5fa0613e | 246 | if (args->fi_sysfile_type != 0) |
9902af79 | 247 | lockdep_set_class(&inode->i_rwsem, |
5fa0613e | 248 | &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); |
cb25797d JK |
249 | if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE || |
250 | args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE || | |
251 | args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE || | |
252 | args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE) | |
253 | lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem, | |
254 | &ocfs2_quota_ip_alloc_sem_key); | |
255 | else | |
256 | lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem, | |
257 | &ocfs2_file_ip_alloc_sem_key); | |
ccd979bd | 258 | |
ccd979bd MF |
259 | return 0; |
260 | } | |
261 | ||
b657c95c JB |
262 | void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
263 | int create_ino) | |
ccd979bd MF |
264 | { |
265 | struct super_block *sb; | |
266 | struct ocfs2_super *osb; | |
53da4939 | 267 | int use_plocks = 1; |
ccd979bd | 268 | |
ccd979bd MF |
269 | sb = inode->i_sb; |
270 | osb = OCFS2_SB(sb); | |
271 | ||
53da4939 MF |
272 | if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) || |
273 | ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks()) | |
274 | use_plocks = 0; | |
275 | ||
b657c95c JB |
276 | /* |
277 | * These have all been checked by ocfs2_read_inode_block() or set | |
278 | * by ocfs2_mknod_locked(), so a failure is a code bug. | |
279 | */ | |
280 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode | |
281 | cannot create a superblock | |
282 | inode today. change if | |
283 | that is needed. */ | |
284 | BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))); | |
285 | BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation); | |
ccd979bd | 286 | |
ccd979bd | 287 | |
8110b073 MF |
288 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
289 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); | |
15b1e36b | 290 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
8110b073 | 291 | |
cc56c33e | 292 | inode_set_iversion(inode, 1); |
ccd979bd MF |
293 | inode->i_generation = le32_to_cpu(fe->i_generation); |
294 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
295 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
2c034176 EB |
296 | i_uid_write(inode, le32_to_cpu(fe->i_uid)); |
297 | i_gid_write(inode, le32_to_cpu(fe->i_gid)); | |
ccd979bd MF |
298 | |
299 | /* Fast symlinks will have i_size but no allocated clusters. */ | |
ea022dfb | 300 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) { |
ccd979bd | 301 | inode->i_blocks = 0; |
ea022dfb AV |
302 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
303 | } else { | |
8110b073 | 304 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ea022dfb AV |
305 | inode->i_mapping->a_ops = &ocfs2_aops; |
306 | } | |
ccd979bd MF |
307 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
308 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
309 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
310 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
311 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
312 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
313 | ||
314 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) | |
315 | mlog(ML_ERROR, | |
b0697053 MF |
316 | "ip_blkno %llu != i_blkno %llu!\n", |
317 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1ca1a111 | 318 | (unsigned long long)le64_to_cpu(fe->i_blkno)); |
ccd979bd | 319 | |
bfe86848 | 320 | set_nlink(inode, ocfs2_read_links_count(fe)); |
ccd979bd | 321 | |
64f3b269 TM |
322 | trace_ocfs2_populate_inode(OCFS2_I(inode)->ip_blkno, |
323 | le32_to_cpu(fe->i_flags)); | |
bbbd0eb3 | 324 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) { |
24c19ef4 | 325 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; |
bbbd0eb3 JK |
326 | inode->i_flags |= S_NOQUOTA; |
327 | } | |
64f3b269 | 328 | |
ccd979bd MF |
329 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
330 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
ccd979bd MF |
331 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { |
332 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
1a224ad1 JK |
333 | } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) { |
334 | inode->i_flags |= S_NOQUOTA; | |
ccd979bd | 335 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { |
ccd979bd MF |
336 | /* we can't actually hit this as read_inode can't |
337 | * handle superblocks today ;-) */ | |
338 | BUG(); | |
339 | } | |
340 | ||
341 | switch (inode->i_mode & S_IFMT) { | |
342 | case S_IFREG: | |
53da4939 MF |
343 | if (use_plocks) |
344 | inode->i_fop = &ocfs2_fops; | |
345 | else | |
346 | inode->i_fop = &ocfs2_fops_no_plocks; | |
ccd979bd MF |
347 | inode->i_op = &ocfs2_file_iops; |
348 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
349 | break; | |
350 | case S_IFDIR: | |
351 | inode->i_op = &ocfs2_dir_iops; | |
53da4939 MF |
352 | if (use_plocks) |
353 | inode->i_fop = &ocfs2_dops; | |
354 | else | |
355 | inode->i_fop = &ocfs2_dops_no_plocks; | |
ccd979bd | 356 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
5e98d492 | 357 | OCFS2_I(inode)->ip_dir_lock_gen = 1; |
ccd979bd MF |
358 | break; |
359 | case S_IFLNK: | |
ea022dfb | 360 | inode->i_op = &ocfs2_symlink_inode_operations; |
21fc61c7 | 361 | inode_nohighmem(inode); |
ccd979bd MF |
362 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
363 | break; | |
364 | default: | |
365 | inode->i_op = &ocfs2_special_file_iops; | |
366 | init_special_inode(inode, inode->i_mode, | |
367 | inode->i_rdev); | |
368 | break; | |
369 | } | |
370 | ||
24c19ef4 MF |
371 | if (create_ino) { |
372 | inode->i_ino = ino_from_blkno(inode->i_sb, | |
373 | le64_to_cpu(fe->i_blkno)); | |
374 | ||
375 | /* | |
376 | * If we ever want to create system files from kernel, | |
377 | * the generation argument to | |
378 | * ocfs2_inode_lock_res_init() will have to change. | |
379 | */ | |
1ca1a111 | 380 | BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL); |
24c19ef4 | 381 | |
e63aecb6 | 382 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 | 383 | OCFS2_LOCK_TYPE_META, 0, inode); |
50008630 TY |
384 | |
385 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, | |
386 | OCFS2_LOCK_TYPE_OPEN, 0, inode); | |
24c19ef4 MF |
387 | } |
388 | ||
ccd979bd | 389 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
24c19ef4 MF |
390 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
391 | inode); | |
392 | ||
ca4d147e | 393 | ocfs2_set_inode_flags(inode); |
ca4d147e | 394 | |
13821151 TM |
395 | OCFS2_I(inode)->ip_last_used_slot = 0; |
396 | OCFS2_I(inode)->ip_last_used_group = 0; | |
e3b4a97d MF |
397 | |
398 | if (S_ISDIR(inode->i_mode)) | |
399 | ocfs2_resv_set_type(&OCFS2_I(inode)->ip_la_data_resv, | |
400 | OCFS2_RESV_FLAG_DIR); | |
ccd979bd MF |
401 | } |
402 | ||
403 | static int ocfs2_read_locked_inode(struct inode *inode, | |
404 | struct ocfs2_find_inode_args *args) | |
405 | { | |
406 | struct super_block *sb; | |
407 | struct ocfs2_super *osb; | |
408 | struct ocfs2_dinode *fe; | |
409 | struct buffer_head *bh = NULL; | |
d56a8f32 | 410 | int status, can_lock, lock_level = 0; |
24c19ef4 | 411 | u32 generation = 0; |
ccd979bd | 412 | |
ccd979bd | 413 | status = -EINVAL; |
ccd979bd MF |
414 | sb = inode->i_sb; |
415 | osb = OCFS2_SB(sb); | |
416 | ||
24c19ef4 MF |
417 | /* |
418 | * To improve performance of cold-cache inode stats, we take | |
419 | * the cluster lock here if possible. | |
420 | * | |
421 | * Generally, OCFS2 never trusts the contents of an inode | |
422 | * unless it's holding a cluster lock, so taking it here isn't | |
423 | * a correctness issue as much as it is a performance | |
424 | * improvement. | |
425 | * | |
426 | * There are three times when taking the lock is not a good idea: | |
427 | * | |
428 | * 1) During startup, before we have initialized the DLM. | |
429 | * | |
430 | * 2) If we are reading certain system files which never get | |
431 | * cluster locks (local alloc, truncate log). | |
432 | * | |
433 | * 3) If the process doing the iget() is responsible for | |
434 | * orphan dir recovery. We're holding the orphan dir lock and | |
435 | * can get into a deadlock with another process on another | |
436 | * node in ->delete_inode(). | |
437 | * | |
438 | * #1 and #2 can be simply solved by never taking the lock | |
439 | * here for system files (which are the only type we read | |
440 | * during mount). It's a heavier approach, but our main | |
b595076a | 441 | * concern is user-accessible files anyway. |
24c19ef4 MF |
442 | * |
443 | * #3 works itself out because we'll eventually take the | |
444 | * cluster lock before trusting anything anyway. | |
445 | */ | |
446 | can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
50008630 | 447 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
c271c5c2 | 448 | && !ocfs2_mount_local(osb); |
24c19ef4 | 449 | |
64f3b269 TM |
450 | trace_ocfs2_read_locked_inode( |
451 | (unsigned long long)OCFS2_I(inode)->ip_blkno, can_lock); | |
452 | ||
24c19ef4 MF |
453 | /* |
454 | * To maintain backwards compatibility with older versions of | |
455 | * ocfs2-tools, we still store the generation value for system | |
456 | * files. The only ones that actually matter to userspace are | |
457 | * the journals, but it's easier and inexpensive to just flag | |
458 | * all system files similarly. | |
459 | */ | |
460 | if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
461 | generation = osb->fs_generation; | |
462 | ||
e63aecb6 | 463 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 MF |
464 | OCFS2_LOCK_TYPE_META, |
465 | generation, inode); | |
466 | ||
50008630 TY |
467 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
468 | OCFS2_LOCK_TYPE_OPEN, | |
469 | 0, inode); | |
470 | ||
24c19ef4 | 471 | if (can_lock) { |
50008630 TY |
472 | status = ocfs2_open_lock(inode); |
473 | if (status) { | |
474 | make_bad_inode(inode); | |
475 | mlog_errno(status); | |
476 | return status; | |
477 | } | |
d56a8f32 | 478 | status = ocfs2_inode_lock(inode, NULL, lock_level); |
24c19ef4 MF |
479 | if (status) { |
480 | make_bad_inode(inode); | |
481 | mlog_errno(status); | |
482 | return status; | |
483 | } | |
ccd979bd MF |
484 | } |
485 | ||
50008630 TY |
486 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
487 | status = ocfs2_try_open_lock(inode, 0); | |
488 | if (status) { | |
2bd63216 | 489 | make_bad_inode(inode); |
50008630 TY |
490 | return status; |
491 | } | |
492 | } | |
493 | ||
b657c95c | 494 | if (can_lock) { |
d56a8f32 GH |
495 | if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_CHK) |
496 | status = ocfs2_filecheck_read_inode_block_full(inode, | |
497 | &bh, OCFS2_BH_IGNORE_CACHE, 0); | |
498 | else if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_FIX) | |
499 | status = ocfs2_filecheck_read_inode_block_full(inode, | |
500 | &bh, OCFS2_BH_IGNORE_CACHE, 1); | |
501 | else | |
502 | status = ocfs2_read_inode_block_full(inode, | |
503 | &bh, OCFS2_BH_IGNORE_CACHE); | |
b657c95c | 504 | } else { |
da1e9098 | 505 | status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); |
f5ce5a08 SM |
506 | /* |
507 | * If buffer is in jbd, then its checksum may not have been | |
508 | * computed as yet. | |
509 | */ | |
d56a8f32 GH |
510 | if (!status && !buffer_jbd(bh)) { |
511 | if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_CHK) | |
512 | status = ocfs2_filecheck_validate_inode_block( | |
513 | osb->sb, bh); | |
514 | else if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_FIX) | |
515 | status = ocfs2_filecheck_repair_inode_block( | |
516 | osb->sb, bh); | |
517 | else | |
518 | status = ocfs2_validate_inode_block( | |
519 | osb->sb, bh); | |
520 | } | |
b657c95c | 521 | } |
ccd979bd MF |
522 | if (status < 0) { |
523 | mlog_errno(status); | |
ccd979bd MF |
524 | goto bail; |
525 | } | |
526 | ||
24c19ef4 | 527 | status = -EINVAL; |
ccd979bd | 528 | fe = (struct ocfs2_dinode *) bh->b_data; |
ccd979bd | 529 | |
24c19ef4 MF |
530 | /* |
531 | * This is a code bug. Right now the caller needs to | |
532 | * understand whether it is asking for a system file inode or | |
533 | * not so the proper lock names can be built. | |
534 | */ | |
535 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != | |
536 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), | |
1c3ce541 | 537 | "Inode %llu: system file state is ambiguous\n", |
24c19ef4 | 538 | (unsigned long long)args->fi_blkno); |
ccd979bd MF |
539 | |
540 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || | |
541 | S_ISBLK(le16_to_cpu(fe->i_mode))) | |
b657c95c | 542 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
ccd979bd | 543 | |
b657c95c | 544 | ocfs2_populate_inode(inode, fe, 0); |
ccd979bd MF |
545 | |
546 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); | |
547 | ||
d56a8f32 GH |
548 | if (buffer_dirty(bh) && !buffer_jbd(bh)) { |
549 | if (can_lock) { | |
550 | ocfs2_inode_unlock(inode, lock_level); | |
551 | lock_level = 1; | |
552 | ocfs2_inode_lock(inode, NULL, lock_level); | |
553 | } | |
554 | status = ocfs2_write_block(osb, bh, INODE_CACHE(inode)); | |
555 | if (status < 0) { | |
556 | mlog_errno(status); | |
557 | goto bail; | |
558 | } | |
559 | } | |
560 | ||
ccd979bd MF |
561 | status = 0; |
562 | ||
563 | bail: | |
24c19ef4 | 564 | if (can_lock) |
d56a8f32 | 565 | ocfs2_inode_unlock(inode, lock_level); |
24c19ef4 MF |
566 | |
567 | if (status < 0) | |
568 | make_bad_inode(inode); | |
569 | ||
4a635a11 | 570 | brelse(bh); |
ccd979bd | 571 | |
ccd979bd MF |
572 | return status; |
573 | } | |
574 | ||
575 | void ocfs2_sync_blockdev(struct super_block *sb) | |
576 | { | |
577 | sync_blockdev(sb->s_bdev); | |
578 | } | |
579 | ||
580 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
581 | struct inode *inode, | |
582 | struct buffer_head *fe_bh) | |
583 | { | |
584 | int status = 0; | |
ccd979bd | 585 | struct ocfs2_dinode *fe; |
60b11392 | 586 | handle_t *handle = NULL; |
ccd979bd | 587 | |
ccd979bd MF |
588 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
589 | ||
1afc32b9 MF |
590 | /* |
591 | * This check will also skip truncate of inodes with inline | |
592 | * data and fast symlinks. | |
593 | */ | |
3a0782d0 | 594 | if (fe->i_clusters) { |
2b4e30fb JB |
595 | if (ocfs2_should_order_data(inode)) |
596 | ocfs2_begin_ordered_truncate(inode, 0); | |
597 | ||
60b11392 MF |
598 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
599 | if (IS_ERR(handle)) { | |
600 | status = PTR_ERR(handle); | |
0350cb07 | 601 | handle = NULL; |
60b11392 MF |
602 | mlog_errno(status); |
603 | goto out; | |
604 | } | |
605 | ||
0cf2f763 JB |
606 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
607 | fe_bh, | |
13723d00 | 608 | OCFS2_JOURNAL_ACCESS_WRITE); |
60b11392 MF |
609 | if (status < 0) { |
610 | mlog_errno(status); | |
611 | goto out; | |
612 | } | |
613 | ||
614 | i_size_write(inode, 0); | |
615 | ||
616 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
617 | if (status < 0) { | |
618 | mlog_errno(status); | |
619 | goto out; | |
620 | } | |
621 | ||
622 | ocfs2_commit_trans(osb, handle); | |
623 | handle = NULL; | |
624 | ||
78f94673 | 625 | status = ocfs2_commit_truncate(osb, inode, fe_bh); |
229ba1f8 | 626 | if (status < 0) |
3a0782d0 | 627 | mlog_errno(status); |
ccd979bd | 628 | } |
ccd979bd | 629 | |
60b11392 MF |
630 | out: |
631 | if (handle) | |
632 | ocfs2_commit_trans(osb, handle); | |
ccd979bd MF |
633 | return status; |
634 | } | |
635 | ||
636 | static int ocfs2_remove_inode(struct inode *inode, | |
637 | struct buffer_head *di_bh, | |
638 | struct inode *orphan_dir_inode, | |
639 | struct buffer_head *orphan_dir_bh) | |
640 | { | |
641 | int status; | |
642 | struct inode *inode_alloc_inode = NULL; | |
643 | struct buffer_head *inode_alloc_bh = NULL; | |
1fabe148 | 644 | handle_t *handle; |
ccd979bd MF |
645 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
646 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
647 | ||
648 | inode_alloc_inode = | |
649 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
650 | le16_to_cpu(di->i_suballoc_slot)); | |
651 | if (!inode_alloc_inode) { | |
62f8b1f0 | 652 | status = -ENOENT; |
ccd979bd MF |
653 | mlog_errno(status); |
654 | goto bail; | |
655 | } | |
656 | ||
5955102c | 657 | inode_lock(inode_alloc_inode); |
e63aecb6 | 658 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
ccd979bd | 659 | if (status < 0) { |
5955102c | 660 | inode_unlock(inode_alloc_inode); |
ccd979bd MF |
661 | |
662 | mlog_errno(status); | |
663 | goto bail; | |
664 | } | |
665 | ||
a90714c1 | 666 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS + |
9b7895ef | 667 | ocfs2_quota_trans_credits(inode->i_sb)); |
ccd979bd MF |
668 | if (IS_ERR(handle)) { |
669 | status = PTR_ERR(handle); | |
670 | mlog_errno(status); | |
671 | goto bail_unlock; | |
672 | } | |
673 | ||
d4cd1871 LD |
674 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
675 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
06ee5c75 | 676 | orphan_dir_bh, false); |
d4cd1871 LD |
677 | if (status < 0) { |
678 | mlog_errno(status); | |
679 | goto bail_commit; | |
680 | } | |
ccd979bd MF |
681 | } |
682 | ||
683 | /* set the inodes dtime */ | |
0cf2f763 | 684 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, |
13723d00 | 685 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
686 | if (status < 0) { |
687 | mlog_errno(status); | |
688 | goto bail_commit; | |
689 | } | |
690 | ||
c62c38f6 | 691 | di->i_dtime = cpu_to_le64(ktime_get_real_seconds()); |
4092d49f | 692 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
ec20cec7 | 693 | ocfs2_journal_dirty(handle, di_bh); |
ccd979bd | 694 | |
8cb471e8 | 695 | ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh); |
63936dda | 696 | dquot_free_inode(inode); |
ccd979bd MF |
697 | |
698 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
699 | inode_alloc_bh, di); | |
700 | if (status < 0) | |
701 | mlog_errno(status); | |
702 | ||
703 | bail_commit: | |
02dc1af4 | 704 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 705 | bail_unlock: |
e63aecb6 | 706 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
5955102c | 707 | inode_unlock(inode_alloc_inode); |
ccd979bd MF |
708 | brelse(inode_alloc_bh); |
709 | bail: | |
710 | iput(inode_alloc_inode); | |
711 | ||
712 | return status; | |
713 | } | |
714 | ||
2bd63216 | 715 | /* |
b4df6ed8 MF |
716 | * Serialize with orphan dir recovery. If the process doing |
717 | * recovery on this orphan dir does an iget() with the dir | |
718 | * i_mutex held, we'll deadlock here. Instead we detect this | |
719 | * and exit early - recovery will wipe this inode for us. | |
720 | */ | |
721 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
722 | int slot) | |
723 | { | |
724 | int ret = 0; | |
725 | ||
726 | spin_lock(&osb->osb_lock); | |
727 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
b4df6ed8 MF |
728 | ret = -EDEADLK; |
729 | goto out; | |
730 | } | |
731 | /* This signals to the orphan recovery process that it should | |
732 | * wait for us to handle the wipe. */ | |
733 | osb->osb_orphan_wipes[slot]++; | |
734 | out: | |
735 | spin_unlock(&osb->osb_lock); | |
64f3b269 | 736 | trace_ocfs2_check_orphan_recovery_state(slot, ret); |
b4df6ed8 MF |
737 | return ret; |
738 | } | |
739 | ||
740 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
741 | int slot) | |
742 | { | |
743 | spin_lock(&osb->osb_lock); | |
744 | osb->osb_orphan_wipes[slot]--; | |
745 | spin_unlock(&osb->osb_lock); | |
746 | ||
747 | wake_up(&osb->osb_wipe_event); | |
748 | } | |
749 | ||
ccd979bd MF |
750 | static int ocfs2_wipe_inode(struct inode *inode, |
751 | struct buffer_head *di_bh) | |
752 | { | |
d577632e | 753 | int status, orphaned_slot = -1; |
ccd979bd MF |
754 | struct inode *orphan_dir_inode = NULL; |
755 | struct buffer_head *orphan_dir_bh = NULL; | |
756 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
d4cd1871 | 757 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; |
ccd979bd | 758 | |
d4cd1871 LD |
759 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
760 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); | |
b4df6ed8 | 761 | |
d4cd1871 LD |
762 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); |
763 | if (status) | |
764 | return status; | |
b4df6ed8 | 765 | |
d4cd1871 LD |
766 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
767 | ORPHAN_DIR_SYSTEM_INODE, | |
768 | orphaned_slot); | |
769 | if (!orphan_dir_inode) { | |
62f8b1f0 | 770 | status = -ENOENT; |
d4cd1871 LD |
771 | mlog_errno(status); |
772 | goto bail; | |
773 | } | |
ccd979bd | 774 | |
d4cd1871 LD |
775 | /* Lock the orphan dir. The lock will be held for the entire |
776 | * delete_inode operation. We do this now to avoid races with | |
777 | * recovery completion on other nodes. */ | |
5955102c | 778 | inode_lock(orphan_dir_inode); |
d4cd1871 LD |
779 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
780 | if (status < 0) { | |
5955102c | 781 | inode_unlock(orphan_dir_inode); |
ccd979bd | 782 | |
d4cd1871 LD |
783 | mlog_errno(status); |
784 | goto bail; | |
785 | } | |
ccd979bd MF |
786 | } |
787 | ||
788 | /* we do this while holding the orphan dir lock because we | |
34d024f8 MF |
789 | * don't want recovery being run from another node to try an |
790 | * inode delete underneath us -- this will result in two nodes | |
ccd979bd MF |
791 | * truncating the same file! */ |
792 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
793 | if (status < 0) { | |
794 | mlog_errno(status); | |
795 | goto bail_unlock_dir; | |
796 | } | |
797 | ||
9b7895ef MF |
798 | /* Remove any dir index tree */ |
799 | if (S_ISDIR(inode->i_mode)) { | |
800 | status = ocfs2_dx_dir_truncate(inode, di_bh); | |
801 | if (status) { | |
802 | mlog_errno(status); | |
803 | goto bail_unlock_dir; | |
804 | } | |
805 | } | |
806 | ||
cf1d6c76 TY |
807 | /*Free extended attribute resources associated with this inode.*/ |
808 | status = ocfs2_xattr_remove(inode, di_bh); | |
809 | if (status < 0) { | |
810 | mlog_errno(status); | |
811 | goto bail_unlock_dir; | |
812 | } | |
813 | ||
8b2c0dba TM |
814 | status = ocfs2_remove_refcount_tree(inode, di_bh); |
815 | if (status < 0) { | |
816 | mlog_errno(status); | |
817 | goto bail_unlock_dir; | |
818 | } | |
819 | ||
ccd979bd MF |
820 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
821 | orphan_dir_bh); | |
822 | if (status < 0) | |
823 | mlog_errno(status); | |
824 | ||
825 | bail_unlock_dir: | |
d4cd1871 LD |
826 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR) |
827 | return status; | |
828 | ||
e63aecb6 | 829 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
5955102c | 830 | inode_unlock(orphan_dir_inode); |
ccd979bd MF |
831 | brelse(orphan_dir_bh); |
832 | bail: | |
833 | iput(orphan_dir_inode); | |
b4df6ed8 | 834 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
835 | |
836 | return status; | |
837 | } | |
838 | ||
839 | /* There is a series of simple checks that should be done before a | |
34d024f8 | 840 | * trylock is even considered. Encapsulate those in this function. */ |
ccd979bd MF |
841 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
842 | { | |
843 | int ret = 0; | |
844 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
845 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
846 | ||
64f3b269 TM |
847 | trace_ocfs2_inode_is_valid_to_delete(current, osb->dc_task, |
848 | (unsigned long long)oi->ip_blkno, | |
849 | oi->ip_flags); | |
850 | ||
ccd979bd MF |
851 | /* We shouldn't be getting here for the root directory |
852 | * inode.. */ | |
853 | if (inode == osb->root_inode) { | |
854 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
855 | goto bail; | |
856 | } | |
857 | ||
bd62ad7a JK |
858 | /* |
859 | * If we're coming from downconvert_thread we can't go into our own | |
860 | * voting [hello, deadlock city!] so we cannot delete the inode. But | |
861 | * since we dropped last inode ref when downconverting dentry lock, | |
862 | * we cannot have the file open and thus the node doing unlink will | |
863 | * take care of deleting the inode. | |
864 | */ | |
64f3b269 | 865 | if (current == osb->dc_task) |
ccd979bd | 866 | goto bail; |
ccd979bd MF |
867 | |
868 | spin_lock(&oi->ip_lock); | |
869 | /* OCFS2 *never* deletes system files. This should technically | |
870 | * never get here as system file inodes should always have a | |
871 | * positive link count. */ | |
872 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
b0697053 MF |
873 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
874 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
875 | goto bail_unlock; |
876 | } | |
877 | ||
ccd979bd MF |
878 | ret = 1; |
879 | bail_unlock: | |
880 | spin_unlock(&oi->ip_lock); | |
881 | bail: | |
882 | return ret; | |
883 | } | |
884 | ||
885 | /* Query the cluster to determine whether we should wipe an inode from | |
886 | * disk or not. | |
887 | * | |
888 | * Requires the inode to have the cluster lock. */ | |
889 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
890 | struct buffer_head *di_bh, | |
891 | int *wipe) | |
892 | { | |
64f3b269 | 893 | int status = 0, reason = 0; |
ccd979bd MF |
894 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
895 | struct ocfs2_dinode *di; | |
896 | ||
897 | *wipe = 0; | |
898 | ||
64f3b269 TM |
899 | trace_ocfs2_query_inode_wipe_begin((unsigned long long)oi->ip_blkno, |
900 | inode->i_nlink); | |
901 | ||
ccd979bd MF |
902 | /* While we were waiting for the cluster lock in |
903 | * ocfs2_delete_inode, another node might have asked to delete | |
904 | * the inode. Recheck our flags to catch this. */ | |
905 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
64f3b269 | 906 | reason = 1; |
ccd979bd MF |
907 | goto bail; |
908 | } | |
909 | ||
910 | /* Now that we have an up to date inode, we can double check | |
911 | * the link count. */ | |
64f3b269 | 912 | if (inode->i_nlink) |
ccd979bd | 913 | goto bail; |
ccd979bd MF |
914 | |
915 | /* Do some basic inode verification... */ | |
916 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
d4cd1871 LD |
917 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) && |
918 | !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { | |
b54c2ca4 TY |
919 | /* |
920 | * Inodes in the orphan dir must have ORPHANED_FL. The only | |
921 | * inodes that come back out of the orphan dir are reflink | |
922 | * targets. A reflink target may be moved out of the orphan | |
923 | * dir between the time we scan the directory and the time we | |
924 | * process it. This would lead to HAS_REFCOUNT_FL being set but | |
925 | * ORPHANED_FL not. | |
926 | */ | |
927 | if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) { | |
64f3b269 | 928 | reason = 2; |
b54c2ca4 TY |
929 | goto bail; |
930 | } | |
931 | ||
ccd979bd MF |
932 | /* for lack of a better error? */ |
933 | status = -EEXIST; | |
934 | mlog(ML_ERROR, | |
b0697053 | 935 | "Inode %llu (on-disk %llu) not orphaned! " |
ccd979bd | 936 | "Disk flags 0x%x, inode flags 0x%x\n", |
b0697053 | 937 | (unsigned long long)oi->ip_blkno, |
1ca1a111 MF |
938 | (unsigned long long)le64_to_cpu(di->i_blkno), |
939 | le32_to_cpu(di->i_flags), oi->ip_flags); | |
ccd979bd MF |
940 | goto bail; |
941 | } | |
942 | ||
943 | /* has someone already deleted us?! baaad... */ | |
944 | if (di->i_dtime) { | |
945 | status = -EEXIST; | |
946 | mlog_errno(status); | |
947 | goto bail; | |
948 | } | |
949 | ||
6f16bf65 MF |
950 | /* |
951 | * This is how ocfs2 determines whether an inode is still live | |
952 | * within the cluster. Every node takes a shared read lock on | |
953 | * the inode open lock in ocfs2_read_locked_inode(). When we | |
954 | * get to ->delete_inode(), each node tries to convert it's | |
955 | * lock to an exclusive. Trylocks are serialized by the inode | |
25985edc | 956 | * meta data lock. If the upconvert succeeds, we know the inode |
6f16bf65 MF |
957 | * is no longer live and can be deleted. |
958 | * | |
959 | * Though we call this with the meta data lock held, the | |
960 | * trylock keeps us from ABBA deadlock. | |
961 | */ | |
962 | status = ocfs2_try_open_lock(inode, 1); | |
50008630 | 963 | if (status == -EAGAIN) { |
ccd979bd | 964 | status = 0; |
64f3b269 | 965 | reason = 3; |
ccd979bd MF |
966 | goto bail; |
967 | } | |
968 | if (status < 0) { | |
969 | mlog_errno(status); | |
970 | goto bail; | |
971 | } | |
972 | ||
50008630 | 973 | *wipe = 1; |
64f3b269 | 974 | trace_ocfs2_query_inode_wipe_succ(le16_to_cpu(di->i_orphaned_slot)); |
ccd979bd MF |
975 | |
976 | bail: | |
64f3b269 | 977 | trace_ocfs2_query_inode_wipe_end(status, reason); |
ccd979bd MF |
978 | return status; |
979 | } | |
980 | ||
981 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
982 | * inode data in a consistent state for clear_inode. Always truncates | |
983 | * pages, optionally sync's them first. */ | |
984 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
985 | int sync_data) | |
986 | { | |
64f3b269 TM |
987 | trace_ocfs2_cleanup_delete_inode( |
988 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); | |
ccd979bd | 989 | if (sync_data) |
249ec93c | 990 | filemap_write_and_wait(inode->i_mapping); |
91b0abe3 | 991 | truncate_inode_pages_final(&inode->i_data); |
ccd979bd MF |
992 | } |
993 | ||
066d92dc | 994 | static void ocfs2_delete_inode(struct inode *inode) |
ccd979bd MF |
995 | { |
996 | int wipe, status; | |
e4b963f1 | 997 | sigset_t oldset; |
ccd979bd | 998 | struct buffer_head *di_bh = NULL; |
ad694821 | 999 | struct ocfs2_dinode *di = NULL; |
ccd979bd | 1000 | |
64f3b269 TM |
1001 | trace_ocfs2_delete_inode(inode->i_ino, |
1002 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1003 | is_bad_inode(inode)); | |
ccd979bd | 1004 | |
a90714c1 JK |
1005 | /* When we fail in read_inode() we mark inode as bad. The second test |
1006 | * catches the case when inode allocation fails before allocating | |
1007 | * a block for inode. */ | |
64f3b269 | 1008 | if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) |
ccd979bd | 1009 | goto bail; |
ccd979bd MF |
1010 | |
1011 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
1012 | /* It's probably not necessary to truncate_inode_pages | |
1013 | * here but we do it for safety anyway (it will most | |
1014 | * likely be a no-op anyway) */ | |
1015 | ocfs2_cleanup_delete_inode(inode, 0); | |
1016 | goto bail; | |
1017 | } | |
1018 | ||
bd62ad7a JK |
1019 | dquot_initialize(inode); |
1020 | ||
ccd979bd MF |
1021 | /* We want to block signals in delete_inode as the lock and |
1022 | * messaging paths may return us -ERESTARTSYS. Which would | |
1023 | * cause us to exit early, resulting in inodes being orphaned | |
1024 | * forever. */ | |
e4b963f1 | 1025 | ocfs2_block_signals(&oldset); |
ccd979bd | 1026 | |
6ca497a8 | 1027 | /* |
1028 | * Synchronize us against ocfs2_get_dentry. We take this in | |
1029 | * shared mode so that all nodes can still concurrently | |
1030 | * process deletes. | |
1031 | */ | |
1032 | status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0); | |
1033 | if (status < 0) { | |
1034 | mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status); | |
1035 | ocfs2_cleanup_delete_inode(inode, 0); | |
1036 | goto bail_unblock; | |
1037 | } | |
ccd979bd MF |
1038 | /* Lock down the inode. This gives us an up to date view of |
1039 | * it's metadata (for verification), and allows us to | |
34d024f8 | 1040 | * serialize delete_inode on multiple nodes. |
ccd979bd MF |
1041 | * |
1042 | * Even though we might be doing a truncate, we don't take the | |
1043 | * allocation lock here as it won't be needed - nobody will | |
1044 | * have the file open. | |
1045 | */ | |
e63aecb6 | 1046 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
ccd979bd MF |
1047 | if (status < 0) { |
1048 | if (status != -ENOENT) | |
1049 | mlog_errno(status); | |
1050 | ocfs2_cleanup_delete_inode(inode, 0); | |
6ca497a8 | 1051 | goto bail_unlock_nfs_sync; |
ccd979bd MF |
1052 | } |
1053 | ||
ad694821 JQ |
1054 | di = (struct ocfs2_dinode *)di_bh->b_data; |
1055 | /* Skip inode deletion and wait for dio orphan entry recovered | |
1056 | * first */ | |
1057 | if (unlikely(di->i_flags & cpu_to_le32(OCFS2_DIO_ORPHANED_FL))) { | |
1058 | ocfs2_cleanup_delete_inode(inode, 0); | |
1059 | goto bail_unlock_inode; | |
1060 | } | |
1061 | ||
ccd979bd MF |
1062 | /* Query the cluster. This will be the final decision made |
1063 | * before we go ahead and wipe the inode. */ | |
1064 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
1065 | if (!wipe || status < 0) { | |
34d024f8 | 1066 | /* Error and remote inode busy both mean we won't be |
ccd979bd MF |
1067 | * removing the inode, so they take almost the same |
1068 | * path. */ | |
1069 | if (status < 0) | |
1070 | mlog_errno(status); | |
1071 | ||
34d024f8 MF |
1072 | /* Someone in the cluster has disallowed a wipe of |
1073 | * this inode, or it was never completely | |
1074 | * orphaned. Write out the pages and exit now. */ | |
ccd979bd MF |
1075 | ocfs2_cleanup_delete_inode(inode, 1); |
1076 | goto bail_unlock_inode; | |
1077 | } | |
1078 | ||
1079 | ocfs2_cleanup_delete_inode(inode, 0); | |
1080 | ||
1081 | status = ocfs2_wipe_inode(inode, di_bh); | |
1082 | if (status < 0) { | |
b4df6ed8 MF |
1083 | if (status != -EDEADLK) |
1084 | mlog_errno(status); | |
ccd979bd MF |
1085 | goto bail_unlock_inode; |
1086 | } | |
1087 | ||
24c19ef4 MF |
1088 | /* |
1089 | * Mark the inode as successfully deleted. | |
1090 | * | |
1091 | * This is important for ocfs2_clear_inode() as it will check | |
1092 | * this flag and skip any checkpointing work | |
1093 | * | |
1094 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate | |
1095 | * the LVB for other nodes. | |
1096 | */ | |
ccd979bd MF |
1097 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
1098 | ||
1099 | bail_unlock_inode: | |
e63aecb6 | 1100 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1101 | brelse(di_bh); |
6ca497a8 | 1102 | |
1103 | bail_unlock_nfs_sync: | |
1104 | ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0); | |
1105 | ||
ccd979bd | 1106 | bail_unblock: |
e4b963f1 | 1107 | ocfs2_unblock_signals(&oldset); |
ccd979bd | 1108 | bail: |
c1e8d35e | 1109 | return; |
ccd979bd MF |
1110 | } |
1111 | ||
066d92dc | 1112 | static void ocfs2_clear_inode(struct inode *inode) |
ccd979bd MF |
1113 | { |
1114 | int status; | |
1115 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
84d86f83 | 1116 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
ccd979bd | 1117 | |
dbd5768f | 1118 | clear_inode(inode); |
64f3b269 TM |
1119 | trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno, |
1120 | inode->i_nlink); | |
ccd979bd | 1121 | |
1119d3c0 | 1122 | mlog_bug_on_msg(osb == NULL, |
ccd979bd MF |
1123 | "Inode=%lu\n", inode->i_ino); |
1124 | ||
9f754758 | 1125 | dquot_drop(inode); |
257ba15c | 1126 | |
34d024f8 MF |
1127 | /* To preven remote deletes we hold open lock before, now it |
1128 | * is time to unlock PR and EX open locks. */ | |
50008630 TY |
1129 | ocfs2_open_unlock(inode); |
1130 | ||
ccd979bd | 1131 | /* Do these before all the other work so that we don't bounce |
34d024f8 | 1132 | * the downconvert thread while waiting to destroy the locks. */ |
84d86f83 JK |
1133 | ocfs2_mark_lockres_freeing(osb, &oi->ip_rw_lockres); |
1134 | ocfs2_mark_lockres_freeing(osb, &oi->ip_inode_lockres); | |
1135 | ocfs2_mark_lockres_freeing(osb, &oi->ip_open_lockres); | |
ccd979bd | 1136 | |
1119d3c0 | 1137 | ocfs2_resv_discard(&osb->osb_la_resmap, |
4fe370af MF |
1138 | &oi->ip_la_data_resv); |
1139 | ocfs2_resv_init_once(&oi->ip_la_data_resv); | |
1140 | ||
ccd979bd MF |
1141 | /* We very well may get a clear_inode before all an inodes |
1142 | * metadata has hit disk. Of course, we can't drop any cluster | |
1143 | * locks until the journal has finished with it. The only | |
1144 | * exception here are successfully wiped inodes - their | |
1145 | * metadata can now be considered to be part of the system | |
1146 | * inodes from which it came. */ | |
d324cd4c | 1147 | if (!(oi->ip_flags & OCFS2_INODE_DELETED)) |
ccd979bd MF |
1148 | ocfs2_checkpoint_inode(inode); |
1149 | ||
1150 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
b0697053 MF |
1151 | "Clear inode of %llu, inode has io markers\n", |
1152 | (unsigned long long)oi->ip_blkno); | |
4506cfb6 RD |
1153 | mlog_bug_on_msg(!list_empty(&oi->ip_unwritten_list), |
1154 | "Clear inode of %llu, inode has unwritten extents\n", | |
1155 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1156 | |
83418978 MF |
1157 | ocfs2_extent_map_trunc(inode, 0); |
1158 | ||
ccd979bd MF |
1159 | status = ocfs2_drop_inode_locks(inode); |
1160 | if (status < 0) | |
1161 | mlog_errno(status); | |
1162 | ||
1163 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
e63aecb6 | 1164 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
50008630 | 1165 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
ccd979bd | 1166 | |
66fb345d | 1167 | ocfs2_metadata_cache_exit(INODE_CACHE(inode)); |
ccd979bd | 1168 | |
8cb471e8 | 1169 | mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached, |
b0697053 | 1170 | "Clear inode of %llu, inode has %u cache items\n", |
8cb471e8 JB |
1171 | (unsigned long long)oi->ip_blkno, |
1172 | INODE_CACHE(inode)->ci_num_cached); | |
ccd979bd | 1173 | |
8cb471e8 | 1174 | mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE), |
b0697053 MF |
1175 | "Clear inode of %llu, inode has a bad flag\n", |
1176 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1177 | |
1178 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
b0697053 MF |
1179 | "Clear inode of %llu, inode is locked\n", |
1180 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1181 | |
251b6ecc | 1182 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
b0697053 MF |
1183 | "Clear inode of %llu, io_mutex is locked\n", |
1184 | (unsigned long long)oi->ip_blkno); | |
251b6ecc | 1185 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
1186 | |
1187 | /* | |
1188 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
1189 | * kernel 1, world 0 | |
1190 | */ | |
1191 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
b0697053 MF |
1192 | "Clear inode of %llu, alloc_sem is locked\n", |
1193 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1194 | up_write(&oi->ip_alloc_sem); |
1195 | ||
1196 | mlog_bug_on_msg(oi->ip_open_count, | |
b0697053 MF |
1197 | "Clear inode of %llu has open count %d\n", |
1198 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); | |
ccd979bd MF |
1199 | |
1200 | /* Clear all other flags. */ | |
47460d65 | 1201 | oi->ip_flags = 0; |
ccd979bd MF |
1202 | oi->ip_dir_start_lookup = 0; |
1203 | oi->ip_blkno = 0ULL; | |
ae0dff68 SM |
1204 | |
1205 | /* | |
1206 | * ip_jinode is used to track txns against this inode. We ensure that | |
1207 | * the journal is flushed before journal shutdown. Thus it is safe to | |
1208 | * have inodes get cleaned up after journal shutdown. | |
1209 | */ | |
1119d3c0 | 1210 | jbd2_journal_release_jbd_inode(osb->journal->j_journal, |
2b4e30fb | 1211 | &oi->ip_jinode); |
ccd979bd MF |
1212 | } |
1213 | ||
066d92dc AV |
1214 | void ocfs2_evict_inode(struct inode *inode) |
1215 | { | |
1216 | if (!inode->i_nlink || | |
1217 | (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) { | |
1218 | ocfs2_delete_inode(inode); | |
1219 | } else { | |
91b0abe3 | 1220 | truncate_inode_pages_final(&inode->i_data); |
066d92dc AV |
1221 | } |
1222 | ocfs2_clear_inode(inode); | |
1223 | } | |
1224 | ||
ccd979bd MF |
1225 | /* Called under inode_lock, with no more references on the |
1226 | * struct inode, so it's safe here to check the flags field | |
1227 | * and to manipulate i_nlink without any other locks. */ | |
45321ac5 | 1228 | int ocfs2_drop_inode(struct inode *inode) |
ccd979bd MF |
1229 | { |
1230 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1231 | ||
64f3b269 TM |
1232 | trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno, |
1233 | inode->i_nlink, oi->ip_flags); | |
ccd979bd | 1234 | |
513e2dae X |
1235 | assert_spin_locked(&inode->i_lock); |
1236 | inode->i_state |= I_WILL_FREE; | |
1237 | spin_unlock(&inode->i_lock); | |
1238 | write_inode_now(inode, 1); | |
1239 | spin_lock(&inode->i_lock); | |
1240 | WARN_ON(inode->i_state & I_NEW); | |
1241 | inode->i_state &= ~I_WILL_FREE; | |
ccd979bd | 1242 | |
513e2dae | 1243 | return 1; |
ccd979bd MF |
1244 | } |
1245 | ||
ccd979bd MF |
1246 | /* |
1247 | * This is called from our getattr. | |
1248 | */ | |
1249 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1250 | { | |
2b0143b5 | 1251 | struct inode *inode = d_inode(dentry); |
ccd979bd MF |
1252 | int status = 0; |
1253 | ||
64f3b269 TM |
1254 | trace_ocfs2_inode_revalidate(inode, |
1255 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL, | |
1256 | inode ? (unsigned long long)OCFS2_I(inode)->ip_flags : 0); | |
ccd979bd MF |
1257 | |
1258 | if (!inode) { | |
ccd979bd MF |
1259 | status = -ENOENT; |
1260 | goto bail; | |
1261 | } | |
1262 | ||
1263 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1264 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1265 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
ccd979bd MF |
1266 | status = -ENOENT; |
1267 | goto bail; | |
1268 | } | |
1269 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1270 | ||
e63aecb6 | 1271 | /* Let ocfs2_inode_lock do the work of updating our struct |
ccd979bd | 1272 | * inode for us. */ |
e63aecb6 | 1273 | status = ocfs2_inode_lock(inode, NULL, 0); |
ccd979bd MF |
1274 | if (status < 0) { |
1275 | if (status != -ENOENT) | |
1276 | mlog_errno(status); | |
1277 | goto bail; | |
1278 | } | |
e63aecb6 | 1279 | ocfs2_inode_unlock(inode, 0); |
ccd979bd | 1280 | bail: |
ccd979bd MF |
1281 | return status; |
1282 | } | |
1283 | ||
1284 | /* | |
1285 | * Updates a disk inode from a | |
1286 | * struct inode. | |
1287 | * Only takes ip_lock. | |
1288 | */ | |
1fabe148 | 1289 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
1290 | struct inode *inode, |
1291 | struct buffer_head *bh) | |
1292 | { | |
1293 | int status; | |
1294 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1295 | ||
64f3b269 | 1296 | trace_ocfs2_mark_inode_dirty((unsigned long long)OCFS2_I(inode)->ip_blkno); |
ccd979bd | 1297 | |
0cf2f763 | 1298 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh, |
13723d00 | 1299 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1300 | if (status < 0) { |
1301 | mlog_errno(status); | |
1302 | goto leave; | |
1303 | } | |
1304 | ||
1305 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1306 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
6e4b0d56 | 1307 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 1308 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
15b1e36b | 1309 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
ccd979bd MF |
1310 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
1311 | ||
1312 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
198a1ca3 | 1313 | ocfs2_set_links_count(fe, inode->i_nlink); |
2c034176 EB |
1314 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
1315 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); | |
ccd979bd MF |
1316 | fe->i_mode = cpu_to_le16(inode->i_mode); |
1317 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1318 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1319 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1320 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1321 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1322 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1323 | ||
ec20cec7 | 1324 | ocfs2_journal_dirty(handle, bh); |
2931cdcb | 1325 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
ccd979bd | 1326 | leave: |
ccd979bd MF |
1327 | return status; |
1328 | } | |
1329 | ||
1330 | /* | |
1331 | * | |
1332 | * Updates a struct inode from a disk inode. | |
1333 | * does no i/o, only takes ip_lock. | |
1334 | */ | |
1335 | void ocfs2_refresh_inode(struct inode *inode, | |
1336 | struct ocfs2_dinode *fe) | |
1337 | { | |
ccd979bd MF |
1338 | spin_lock(&OCFS2_I(inode)->ip_lock); |
1339 | ||
1340 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
ca4d147e | 1341 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
15b1e36b | 1342 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
ca4d147e | 1343 | ocfs2_set_inode_flags(inode); |
ccd979bd | 1344 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
bfe86848 | 1345 | set_nlink(inode, ocfs2_read_links_count(fe)); |
2c034176 EB |
1346 | i_uid_write(inode, le32_to_cpu(fe->i_uid)); |
1347 | i_gid_write(inode, le32_to_cpu(fe->i_gid)); | |
ccd979bd | 1348 | inode->i_mode = le16_to_cpu(fe->i_mode); |
ccd979bd MF |
1349 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
1350 | inode->i_blocks = 0; | |
1351 | else | |
8110b073 | 1352 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1353 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
1354 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1355 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1356 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1357 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1358 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1359 | ||
1360 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1361 | } | |
b657c95c JB |
1362 | |
1363 | int ocfs2_validate_inode_block(struct super_block *sb, | |
1364 | struct buffer_head *bh) | |
1365 | { | |
d6b32bbb | 1366 | int rc; |
b657c95c JB |
1367 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; |
1368 | ||
64f3b269 | 1369 | trace_ocfs2_validate_inode_block((unsigned long long)bh->b_blocknr); |
970e4936 | 1370 | |
b657c95c JB |
1371 | BUG_ON(!buffer_uptodate(bh)); |
1372 | ||
d6b32bbb JB |
1373 | /* |
1374 | * If the ecc fails, we return the error but otherwise | |
1375 | * leave the filesystem running. We know any error is | |
1376 | * local to this block. | |
1377 | */ | |
1378 | rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check); | |
13723d00 JB |
1379 | if (rc) { |
1380 | mlog(ML_ERROR, "Checksum failed for dinode %llu\n", | |
1381 | (unsigned long long)bh->b_blocknr); | |
d6b32bbb | 1382 | goto bail; |
13723d00 | 1383 | } |
d6b32bbb JB |
1384 | |
1385 | /* | |
1386 | * Errors after here are fatal. | |
1387 | */ | |
1388 | ||
1389 | rc = -EINVAL; | |
1390 | ||
b657c95c | 1391 | if (!OCFS2_IS_VALID_DINODE(di)) { |
17a5b9ab | 1392 | rc = ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n", |
7ecef14a JP |
1393 | (unsigned long long)bh->b_blocknr, 7, |
1394 | di->i_signature); | |
b657c95c JB |
1395 | goto bail; |
1396 | } | |
1397 | ||
1398 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { | |
17a5b9ab | 1399 | rc = ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n", |
7ecef14a JP |
1400 | (unsigned long long)bh->b_blocknr, |
1401 | (unsigned long long)le64_to_cpu(di->i_blkno)); | |
b657c95c JB |
1402 | goto bail; |
1403 | } | |
1404 | ||
1405 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
17a5b9ab | 1406 | rc = ocfs2_error(sb, |
7ecef14a JP |
1407 | "Invalid dinode #%llu: OCFS2_VALID_FL not set\n", |
1408 | (unsigned long long)bh->b_blocknr); | |
b657c95c JB |
1409 | goto bail; |
1410 | } | |
1411 | ||
1412 | if (le32_to_cpu(di->i_fs_generation) != | |
1413 | OCFS2_SB(sb)->fs_generation) { | |
17a5b9ab | 1414 | rc = ocfs2_error(sb, |
7ecef14a JP |
1415 | "Invalid dinode #%llu: fs_generation is %u\n", |
1416 | (unsigned long long)bh->b_blocknr, | |
1417 | le32_to_cpu(di->i_fs_generation)); | |
b657c95c JB |
1418 | goto bail; |
1419 | } | |
1420 | ||
1421 | rc = 0; | |
1422 | ||
1423 | bail: | |
1424 | return rc; | |
1425 | } | |
1426 | ||
d56a8f32 GH |
1427 | static int ocfs2_filecheck_validate_inode_block(struct super_block *sb, |
1428 | struct buffer_head *bh) | |
1429 | { | |
1430 | int rc = 0; | |
1431 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
1432 | ||
1433 | trace_ocfs2_filecheck_validate_inode_block( | |
1434 | (unsigned long long)bh->b_blocknr); | |
1435 | ||
1436 | BUG_ON(!buffer_uptodate(bh)); | |
1437 | ||
1438 | /* | |
1439 | * Call ocfs2_validate_meta_ecc() first since it has ecc repair | |
1440 | * function, but we should not return error immediately when ecc | |
1441 | * validation fails, because the reason is quite likely the invalid | |
1442 | * inode number inputed. | |
1443 | */ | |
1444 | rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check); | |
1445 | if (rc) { | |
1446 | mlog(ML_ERROR, | |
1447 | "Filecheck: checksum failed for dinode %llu\n", | |
1448 | (unsigned long long)bh->b_blocknr); | |
1449 | rc = -OCFS2_FILECHECK_ERR_BLOCKECC; | |
1450 | } | |
1451 | ||
1452 | if (!OCFS2_IS_VALID_DINODE(di)) { | |
1453 | mlog(ML_ERROR, | |
1454 | "Filecheck: invalid dinode #%llu: signature = %.*s\n", | |
1455 | (unsigned long long)bh->b_blocknr, 7, di->i_signature); | |
1456 | rc = -OCFS2_FILECHECK_ERR_INVALIDINO; | |
1457 | goto bail; | |
1458 | } else if (rc) | |
1459 | goto bail; | |
1460 | ||
1461 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { | |
1462 | mlog(ML_ERROR, | |
1463 | "Filecheck: invalid dinode #%llu: i_blkno is %llu\n", | |
1464 | (unsigned long long)bh->b_blocknr, | |
1465 | (unsigned long long)le64_to_cpu(di->i_blkno)); | |
1466 | rc = -OCFS2_FILECHECK_ERR_BLOCKNO; | |
1467 | goto bail; | |
1468 | } | |
1469 | ||
1470 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
1471 | mlog(ML_ERROR, | |
1472 | "Filecheck: invalid dinode #%llu: OCFS2_VALID_FL " | |
1473 | "not set\n", | |
1474 | (unsigned long long)bh->b_blocknr); | |
1475 | rc = -OCFS2_FILECHECK_ERR_VALIDFLAG; | |
1476 | goto bail; | |
1477 | } | |
1478 | ||
1479 | if (le32_to_cpu(di->i_fs_generation) != | |
1480 | OCFS2_SB(sb)->fs_generation) { | |
1481 | mlog(ML_ERROR, | |
1482 | "Filecheck: invalid dinode #%llu: fs_generation is %u\n", | |
1483 | (unsigned long long)bh->b_blocknr, | |
1484 | le32_to_cpu(di->i_fs_generation)); | |
1485 | rc = -OCFS2_FILECHECK_ERR_GENERATION; | |
d56a8f32 GH |
1486 | } |
1487 | ||
1488 | bail: | |
1489 | return rc; | |
1490 | } | |
1491 | ||
1492 | static int ocfs2_filecheck_repair_inode_block(struct super_block *sb, | |
1493 | struct buffer_head *bh) | |
1494 | { | |
1495 | int changed = 0; | |
1496 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; | |
1497 | ||
1498 | if (!ocfs2_filecheck_validate_inode_block(sb, bh)) | |
1499 | return 0; | |
1500 | ||
1501 | trace_ocfs2_filecheck_repair_inode_block( | |
1502 | (unsigned long long)bh->b_blocknr); | |
1503 | ||
1504 | if (ocfs2_is_hard_readonly(OCFS2_SB(sb)) || | |
1505 | ocfs2_is_soft_readonly(OCFS2_SB(sb))) { | |
1506 | mlog(ML_ERROR, | |
1507 | "Filecheck: cannot repair dinode #%llu " | |
1508 | "on readonly filesystem\n", | |
1509 | (unsigned long long)bh->b_blocknr); | |
1510 | return -OCFS2_FILECHECK_ERR_READONLY; | |
1511 | } | |
1512 | ||
1513 | if (buffer_jbd(bh)) { | |
1514 | mlog(ML_ERROR, | |
1515 | "Filecheck: cannot repair dinode #%llu, " | |
1516 | "its buffer is in jbd\n", | |
1517 | (unsigned long long)bh->b_blocknr); | |
1518 | return -OCFS2_FILECHECK_ERR_INJBD; | |
1519 | } | |
1520 | ||
1521 | if (!OCFS2_IS_VALID_DINODE(di)) { | |
1522 | /* Cannot fix invalid inode block */ | |
1523 | return -OCFS2_FILECHECK_ERR_INVALIDINO; | |
1524 | } | |
1525 | ||
1526 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
1527 | /* Cannot just add VALID_FL flag back as a fix, | |
1528 | * need more things to check here. | |
1529 | */ | |
1530 | return -OCFS2_FILECHECK_ERR_VALIDFLAG; | |
1531 | } | |
1532 | ||
1533 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { | |
1534 | di->i_blkno = cpu_to_le64(bh->b_blocknr); | |
1535 | changed = 1; | |
1536 | mlog(ML_ERROR, | |
1537 | "Filecheck: reset dinode #%llu: i_blkno to %llu\n", | |
1538 | (unsigned long long)bh->b_blocknr, | |
1539 | (unsigned long long)le64_to_cpu(di->i_blkno)); | |
1540 | } | |
1541 | ||
1542 | if (le32_to_cpu(di->i_fs_generation) != | |
1543 | OCFS2_SB(sb)->fs_generation) { | |
1544 | di->i_fs_generation = cpu_to_le32(OCFS2_SB(sb)->fs_generation); | |
1545 | changed = 1; | |
1546 | mlog(ML_ERROR, | |
1547 | "Filecheck: reset dinode #%llu: fs_generation to %u\n", | |
1548 | (unsigned long long)bh->b_blocknr, | |
1549 | le32_to_cpu(di->i_fs_generation)); | |
1550 | } | |
1551 | ||
1552 | if (changed || ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check)) { | |
1553 | ocfs2_compute_meta_ecc(sb, bh->b_data, &di->i_check); | |
1554 | mark_buffer_dirty(bh); | |
1555 | mlog(ML_ERROR, | |
1556 | "Filecheck: reset dinode #%llu: compute meta ecc\n", | |
1557 | (unsigned long long)bh->b_blocknr); | |
1558 | } | |
1559 | ||
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | static int | |
1564 | ocfs2_filecheck_read_inode_block_full(struct inode *inode, | |
1565 | struct buffer_head **bh, | |
1566 | int flags, int type) | |
1567 | { | |
1568 | int rc; | |
1569 | struct buffer_head *tmp = *bh; | |
1570 | ||
1571 | if (!type) /* Check inode block */ | |
1572 | rc = ocfs2_read_blocks(INODE_CACHE(inode), | |
1573 | OCFS2_I(inode)->ip_blkno, | |
1574 | 1, &tmp, flags, | |
1575 | ocfs2_filecheck_validate_inode_block); | |
1576 | else /* Repair inode block */ | |
1577 | rc = ocfs2_read_blocks(INODE_CACHE(inode), | |
1578 | OCFS2_I(inode)->ip_blkno, | |
1579 | 1, &tmp, flags, | |
1580 | ocfs2_filecheck_repair_inode_block); | |
1581 | ||
1582 | /* If ocfs2_read_blocks() got us a new bh, pass it up. */ | |
1583 | if (!rc && !*bh) | |
1584 | *bh = tmp; | |
1585 | ||
1586 | return rc; | |
1587 | } | |
1588 | ||
b657c95c JB |
1589 | int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, |
1590 | int flags) | |
1591 | { | |
1592 | int rc; | |
1593 | struct buffer_head *tmp = *bh; | |
1594 | ||
8cb471e8 JB |
1595 | rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno, |
1596 | 1, &tmp, flags, ocfs2_validate_inode_block); | |
b657c95c JB |
1597 | |
1598 | /* If ocfs2_read_blocks() got us a new bh, pass it up. */ | |
970e4936 | 1599 | if (!rc && !*bh) |
b657c95c JB |
1600 | *bh = tmp; |
1601 | ||
b657c95c JB |
1602 | return rc; |
1603 | } | |
1604 | ||
1605 | int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh) | |
1606 | { | |
1607 | return ocfs2_read_inode_block_full(inode, bh, 0); | |
1608 | } | |
6e5a3d75 | 1609 | |
6e5a3d75 JB |
1610 | |
1611 | static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci) | |
1612 | { | |
1613 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1614 | ||
1615 | return oi->ip_blkno; | |
1616 | } | |
1617 | ||
8cb471e8 JB |
1618 | static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci) |
1619 | { | |
1620 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1621 | ||
1622 | return oi->vfs_inode.i_sb; | |
1623 | } | |
1624 | ||
6e5a3d75 JB |
1625 | static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci) |
1626 | { | |
1627 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1628 | ||
1629 | spin_lock(&oi->ip_lock); | |
1630 | } | |
1631 | ||
1632 | static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci) | |
1633 | { | |
1634 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1635 | ||
1636 | spin_unlock(&oi->ip_lock); | |
1637 | } | |
1638 | ||
1639 | static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci) | |
1640 | { | |
1641 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1642 | ||
1643 | mutex_lock(&oi->ip_io_mutex); | |
1644 | } | |
1645 | ||
1646 | static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci) | |
1647 | { | |
1648 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1649 | ||
1650 | mutex_unlock(&oi->ip_io_mutex); | |
1651 | } | |
1652 | ||
1653 | const struct ocfs2_caching_operations ocfs2_inode_caching_ops = { | |
1654 | .co_owner = ocfs2_inode_cache_owner, | |
8cb471e8 | 1655 | .co_get_super = ocfs2_inode_cache_get_super, |
6e5a3d75 JB |
1656 | .co_cache_lock = ocfs2_inode_cache_lock, |
1657 | .co_cache_unlock = ocfs2_inode_cache_unlock, | |
1658 | .co_io_lock = ocfs2_inode_cache_io_lock, | |
1659 | .co_io_unlock = ocfs2_inode_cache_io_unlock, | |
1660 | }; | |
1661 |