| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 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. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/fs.h> |
| 13 | #include <linux/types.h> |
| 14 | #include <linux/highmem.h> |
| 15 | #include <linux/pagemap.h> |
| 16 | #include <linux/quotaops.h> |
| 17 | #include <linux/iversion.h> |
| 18 | |
| 19 | #include <asm/byteorder.h> |
| 20 | |
| 21 | #include <cluster/masklog.h> |
| 22 | |
| 23 | #include "ocfs2.h" |
| 24 | |
| 25 | #include "alloc.h" |
| 26 | #include "dir.h" |
| 27 | #include "blockcheck.h" |
| 28 | #include "dlmglue.h" |
| 29 | #include "extent_map.h" |
| 30 | #include "file.h" |
| 31 | #include "heartbeat.h" |
| 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" |
| 40 | #include "xattr.h" |
| 41 | #include "refcounttree.h" |
| 42 | #include "ocfs2_trace.h" |
| 43 | #include "filecheck.h" |
| 44 | |
| 45 | #include "buffer_head_io.h" |
| 46 | |
| 47 | struct ocfs2_find_inode_args |
| 48 | { |
| 49 | u64 fi_blkno; |
| 50 | unsigned long fi_ino; |
| 51 | unsigned int fi_flags; |
| 52 | unsigned int fi_sysfile_type; |
| 53 | }; |
| 54 | |
| 55 | static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES]; |
| 56 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | } |
| 123 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, |
| 124 | int sysfile_type) |
| 125 | { |
| 126 | int rc = -ESTALE; |
| 127 | struct inode *inode = NULL; |
| 128 | struct super_block *sb = osb->sb; |
| 129 | struct ocfs2_find_inode_args args; |
| 130 | journal_t *journal = OCFS2_SB(sb)->journal->j_journal; |
| 131 | |
| 132 | trace_ocfs2_iget_begin((unsigned long long)blkno, flags, |
| 133 | sysfile_type); |
| 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; |
| 145 | args.fi_flags = flags; |
| 146 | args.fi_ino = ino_from_blkno(sb, blkno); |
| 147 | args.fi_sysfile_type = sysfile_type; |
| 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. */ |
| 154 | if (inode == NULL) { |
| 155 | inode = ERR_PTR(-ENOMEM); |
| 156 | mlog_errno(PTR_ERR(inode)); |
| 157 | goto bail; |
| 158 | } |
| 159 | trace_ocfs2_iget5_locked(inode->i_state); |
| 160 | if (inode->i_state & I_NEW) { |
| 161 | rc = ocfs2_read_locked_inode(inode, &args); |
| 162 | unlock_new_inode(inode); |
| 163 | } |
| 164 | if (is_bad_inode(inode)) { |
| 165 | iput(inode); |
| 166 | inode = ERR_PTR(rc); |
| 167 | goto bail; |
| 168 | } |
| 169 | |
| 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 | |
| 196 | bail: |
| 197 | if (!IS_ERR(inode)) { |
| 198 | trace_ocfs2_iget_end(inode, |
| 199 | (unsigned long long)OCFS2_I(inode)->ip_blkno); |
| 200 | } |
| 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 | |
| 219 | args = opaque; |
| 220 | |
| 221 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); |
| 222 | |
| 223 | trace_ocfs2_find_actor(inode, inode->i_ino, opaque, args->fi_blkno); |
| 224 | |
| 225 | if (oi->ip_blkno != args->fi_blkno) |
| 226 | goto bail; |
| 227 | |
| 228 | ret = 1; |
| 229 | bail: |
| 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; |
| 241 | static struct lock_class_key ocfs2_quota_ip_alloc_sem_key, |
| 242 | ocfs2_file_ip_alloc_sem_key; |
| 243 | |
| 244 | inode->i_ino = args->fi_ino; |
| 245 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; |
| 246 | if (args->fi_sysfile_type != 0) |
| 247 | lockdep_set_class(&inode->i_rwsem, |
| 248 | &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); |
| 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); |
| 258 | |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
| 263 | int create_ino) |
| 264 | { |
| 265 | struct super_block *sb; |
| 266 | struct ocfs2_super *osb; |
| 267 | int use_plocks = 1; |
| 268 | |
| 269 | sb = inode->i_sb; |
| 270 | osb = OCFS2_SB(sb); |
| 271 | |
| 272 | if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) || |
| 273 | ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks()) |
| 274 | use_plocks = 0; |
| 275 | |
| 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); |
| 286 | |
| 287 | |
| 288 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
| 289 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
| 290 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
| 291 | |
| 292 | inode_set_iversion(inode, 1); |
| 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); |
| 296 | i_uid_write(inode, le32_to_cpu(fe->i_uid)); |
| 297 | i_gid_write(inode, le32_to_cpu(fe->i_gid)); |
| 298 | |
| 299 | /* Fast symlinks will have i_size but no allocated clusters. */ |
| 300 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) { |
| 301 | inode->i_blocks = 0; |
| 302 | inode->i_mapping->a_ops = &ocfs2_fast_symlink_aops; |
| 303 | } else { |
| 304 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
| 305 | inode->i_mapping->a_ops = &ocfs2_aops; |
| 306 | } |
| 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, |
| 316 | "ip_blkno %llu != i_blkno %llu!\n", |
| 317 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
| 318 | (unsigned long long)le64_to_cpu(fe->i_blkno)); |
| 319 | |
| 320 | set_nlink(inode, ocfs2_read_links_count(fe)); |
| 321 | |
| 322 | trace_ocfs2_populate_inode(OCFS2_I(inode)->ip_blkno, |
| 323 | le32_to_cpu(fe->i_flags)); |
| 324 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) { |
| 325 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; |
| 326 | inode->i_flags |= S_NOQUOTA; |
| 327 | } |
| 328 | |
| 329 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
| 330 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; |
| 331 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { |
| 332 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; |
| 333 | } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) { |
| 334 | inode->i_flags |= S_NOQUOTA; |
| 335 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { |
| 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: |
| 343 | if (use_plocks) |
| 344 | inode->i_fop = &ocfs2_fops; |
| 345 | else |
| 346 | inode->i_fop = &ocfs2_fops_no_plocks; |
| 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; |
| 352 | if (use_plocks) |
| 353 | inode->i_fop = &ocfs2_dops; |
| 354 | else |
| 355 | inode->i_fop = &ocfs2_dops_no_plocks; |
| 356 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 357 | OCFS2_I(inode)->ip_dir_lock_gen = 1; |
| 358 | break; |
| 359 | case S_IFLNK: |
| 360 | inode->i_op = &ocfs2_symlink_inode_operations; |
| 361 | inode_nohighmem(inode); |
| 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 | |
| 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 | */ |
| 380 | BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL); |
| 381 | |
| 382 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
| 383 | OCFS2_LOCK_TYPE_META, 0, inode); |
| 384 | |
| 385 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
| 386 | OCFS2_LOCK_TYPE_OPEN, 0, inode); |
| 387 | } |
| 388 | |
| 389 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
| 390 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
| 391 | inode); |
| 392 | |
| 393 | ocfs2_set_inode_flags(inode); |
| 394 | |
| 395 | OCFS2_I(inode)->ip_last_used_slot = 0; |
| 396 | OCFS2_I(inode)->ip_last_used_group = 0; |
| 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); |
| 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; |
| 410 | int status, can_lock, lock_level = 0; |
| 411 | u32 generation = 0; |
| 412 | |
| 413 | status = -EINVAL; |
| 414 | sb = inode->i_sb; |
| 415 | osb = OCFS2_SB(sb); |
| 416 | |
| 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 |
| 441 | * concern is user-accessible files anyway. |
| 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) |
| 447 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
| 448 | && !ocfs2_mount_local(osb); |
| 449 | |
| 450 | trace_ocfs2_read_locked_inode( |
| 451 | (unsigned long long)OCFS2_I(inode)->ip_blkno, can_lock); |
| 452 | |
| 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 | |
| 463 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
| 464 | OCFS2_LOCK_TYPE_META, |
| 465 | generation, inode); |
| 466 | |
| 467 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
| 468 | OCFS2_LOCK_TYPE_OPEN, |
| 469 | 0, inode); |
| 470 | |
| 471 | if (can_lock) { |
| 472 | status = ocfs2_open_lock(inode); |
| 473 | if (status) { |
| 474 | make_bad_inode(inode); |
| 475 | mlog_errno(status); |
| 476 | return status; |
| 477 | } |
| 478 | status = ocfs2_inode_lock(inode, NULL, lock_level); |
| 479 | if (status) { |
| 480 | make_bad_inode(inode); |
| 481 | mlog_errno(status); |
| 482 | return status; |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
| 487 | status = ocfs2_try_open_lock(inode, 0); |
| 488 | if (status) { |
| 489 | make_bad_inode(inode); |
| 490 | return status; |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | if (can_lock) { |
| 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); |
| 504 | } else { |
| 505 | status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); |
| 506 | /* |
| 507 | * If buffer is in jbd, then its checksum may not have been |
| 508 | * computed as yet. |
| 509 | */ |
| 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 | } |
| 521 | } |
| 522 | if (status < 0) { |
| 523 | mlog_errno(status); |
| 524 | goto bail; |
| 525 | } |
| 526 | |
| 527 | status = -EINVAL; |
| 528 | fe = (struct ocfs2_dinode *) bh->b_data; |
| 529 | |
| 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), |
| 537 | "Inode %llu: system file state is ambigous\n", |
| 538 | (unsigned long long)args->fi_blkno); |
| 539 | |
| 540 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || |
| 541 | S_ISBLK(le16_to_cpu(fe->i_mode))) |
| 542 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
| 543 | |
| 544 | ocfs2_populate_inode(inode, fe, 0); |
| 545 | |
| 546 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); |
| 547 | |
| 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 | |
| 561 | status = 0; |
| 562 | |
| 563 | bail: |
| 564 | if (can_lock) |
| 565 | ocfs2_inode_unlock(inode, lock_level); |
| 566 | |
| 567 | if (status < 0) |
| 568 | make_bad_inode(inode); |
| 569 | |
| 570 | brelse(bh); |
| 571 | |
| 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; |
| 585 | struct ocfs2_dinode *fe; |
| 586 | handle_t *handle = NULL; |
| 587 | |
| 588 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
| 589 | |
| 590 | /* |
| 591 | * This check will also skip truncate of inodes with inline |
| 592 | * data and fast symlinks. |
| 593 | */ |
| 594 | if (fe->i_clusters) { |
| 595 | if (ocfs2_should_order_data(inode)) |
| 596 | ocfs2_begin_ordered_truncate(inode, 0); |
| 597 | |
| 598 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
| 599 | if (IS_ERR(handle)) { |
| 600 | status = PTR_ERR(handle); |
| 601 | handle = NULL; |
| 602 | mlog_errno(status); |
| 603 | goto out; |
| 604 | } |
| 605 | |
| 606 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
| 607 | fe_bh, |
| 608 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 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 | |
| 625 | status = ocfs2_commit_truncate(osb, inode, fe_bh); |
| 626 | if (status < 0) |
| 627 | mlog_errno(status); |
| 628 | } |
| 629 | |
| 630 | out: |
| 631 | if (handle) |
| 632 | ocfs2_commit_trans(osb, handle); |
| 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; |
| 644 | handle_t *handle; |
| 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) { |
| 652 | status = -ENOENT; |
| 653 | mlog_errno(status); |
| 654 | goto bail; |
| 655 | } |
| 656 | |
| 657 | inode_lock(inode_alloc_inode); |
| 658 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
| 659 | if (status < 0) { |
| 660 | inode_unlock(inode_alloc_inode); |
| 661 | |
| 662 | mlog_errno(status); |
| 663 | goto bail; |
| 664 | } |
| 665 | |
| 666 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS + |
| 667 | ocfs2_quota_trans_credits(inode->i_sb)); |
| 668 | if (IS_ERR(handle)) { |
| 669 | status = PTR_ERR(handle); |
| 670 | mlog_errno(status); |
| 671 | goto bail_unlock; |
| 672 | } |
| 673 | |
| 674 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
| 675 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, |
| 676 | orphan_dir_bh, false); |
| 677 | if (status < 0) { |
| 678 | mlog_errno(status); |
| 679 | goto bail_commit; |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | /* set the inodes dtime */ |
| 684 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, |
| 685 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 686 | if (status < 0) { |
| 687 | mlog_errno(status); |
| 688 | goto bail_commit; |
| 689 | } |
| 690 | |
| 691 | di->i_dtime = cpu_to_le64(ktime_get_real_seconds()); |
| 692 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
| 693 | ocfs2_journal_dirty(handle, di_bh); |
| 694 | |
| 695 | ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh); |
| 696 | dquot_free_inode(inode); |
| 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: |
| 704 | ocfs2_commit_trans(osb, handle); |
| 705 | bail_unlock: |
| 706 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
| 707 | inode_unlock(inode_alloc_inode); |
| 708 | brelse(inode_alloc_bh); |
| 709 | bail: |
| 710 | iput(inode_alloc_inode); |
| 711 | |
| 712 | return status; |
| 713 | } |
| 714 | |
| 715 | /* |
| 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)) { |
| 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); |
| 736 | trace_ocfs2_check_orphan_recovery_state(slot, ret); |
| 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 | |
| 750 | static int ocfs2_wipe_inode(struct inode *inode, |
| 751 | struct buffer_head *di_bh) |
| 752 | { |
| 753 | int status, orphaned_slot = -1; |
| 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); |
| 757 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; |
| 758 | |
| 759 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
| 760 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); |
| 761 | |
| 762 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); |
| 763 | if (status) |
| 764 | return status; |
| 765 | |
| 766 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
| 767 | ORPHAN_DIR_SYSTEM_INODE, |
| 768 | orphaned_slot); |
| 769 | if (!orphan_dir_inode) { |
| 770 | status = -ENOENT; |
| 771 | mlog_errno(status); |
| 772 | goto bail; |
| 773 | } |
| 774 | |
| 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. */ |
| 778 | inode_lock(orphan_dir_inode); |
| 779 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); |
| 780 | if (status < 0) { |
| 781 | inode_unlock(orphan_dir_inode); |
| 782 | |
| 783 | mlog_errno(status); |
| 784 | goto bail; |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | /* we do this while holding the orphan dir lock because we |
| 789 | * don't want recovery being run from another node to try an |
| 790 | * inode delete underneath us -- this will result in two nodes |
| 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 | |
| 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 | |
| 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 | |
| 814 | status = ocfs2_remove_refcount_tree(inode, di_bh); |
| 815 | if (status < 0) { |
| 816 | mlog_errno(status); |
| 817 | goto bail_unlock_dir; |
| 818 | } |
| 819 | |
| 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: |
| 826 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR) |
| 827 | return status; |
| 828 | |
| 829 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
| 830 | inode_unlock(orphan_dir_inode); |
| 831 | brelse(orphan_dir_bh); |
| 832 | bail: |
| 833 | iput(orphan_dir_inode); |
| 834 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
| 835 | |
| 836 | return status; |
| 837 | } |
| 838 | |
| 839 | /* There is a series of simple checks that should be done before a |
| 840 | * trylock is even considered. Encapsulate those in this function. */ |
| 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 | |
| 847 | trace_ocfs2_inode_is_valid_to_delete(current, osb->dc_task, |
| 848 | (unsigned long long)oi->ip_blkno, |
| 849 | oi->ip_flags); |
| 850 | |
| 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 | |
| 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 | */ |
| 865 | if (current == osb->dc_task) |
| 866 | goto bail; |
| 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) { |
| 873 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
| 874 | (unsigned long long)oi->ip_blkno); |
| 875 | goto bail_unlock; |
| 876 | } |
| 877 | |
| 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 | { |
| 893 | int status = 0, reason = 0; |
| 894 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 895 | struct ocfs2_dinode *di; |
| 896 | |
| 897 | *wipe = 0; |
| 898 | |
| 899 | trace_ocfs2_query_inode_wipe_begin((unsigned long long)oi->ip_blkno, |
| 900 | inode->i_nlink); |
| 901 | |
| 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)) { |
| 906 | reason = 1; |
| 907 | goto bail; |
| 908 | } |
| 909 | |
| 910 | /* Now that we have an up to date inode, we can double check |
| 911 | * the link count. */ |
| 912 | if (inode->i_nlink) |
| 913 | goto bail; |
| 914 | |
| 915 | /* Do some basic inode verification... */ |
| 916 | di = (struct ocfs2_dinode *) di_bh->b_data; |
| 917 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) && |
| 918 | !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
| 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)) { |
| 928 | reason = 2; |
| 929 | goto bail; |
| 930 | } |
| 931 | |
| 932 | /* for lack of a better error? */ |
| 933 | status = -EEXIST; |
| 934 | mlog(ML_ERROR, |
| 935 | "Inode %llu (on-disk %llu) not orphaned! " |
| 936 | "Disk flags 0x%x, inode flags 0x%x\n", |
| 937 | (unsigned long long)oi->ip_blkno, |
| 938 | (unsigned long long)le64_to_cpu(di->i_blkno), |
| 939 | le32_to_cpu(di->i_flags), oi->ip_flags); |
| 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 | |
| 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 |
| 956 | * meta data lock. If the upconvert succeeds, we know the inode |
| 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); |
| 963 | if (status == -EAGAIN) { |
| 964 | status = 0; |
| 965 | reason = 3; |
| 966 | goto bail; |
| 967 | } |
| 968 | if (status < 0) { |
| 969 | mlog_errno(status); |
| 970 | goto bail; |
| 971 | } |
| 972 | |
| 973 | *wipe = 1; |
| 974 | trace_ocfs2_query_inode_wipe_succ(le16_to_cpu(di->i_orphaned_slot)); |
| 975 | |
| 976 | bail: |
| 977 | trace_ocfs2_query_inode_wipe_end(status, reason); |
| 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 | { |
| 987 | trace_ocfs2_cleanup_delete_inode( |
| 988 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); |
| 989 | if (sync_data) |
| 990 | filemap_write_and_wait(inode->i_mapping); |
| 991 | truncate_inode_pages_final(&inode->i_data); |
| 992 | } |
| 993 | |
| 994 | static void ocfs2_delete_inode(struct inode *inode) |
| 995 | { |
| 996 | int wipe, status; |
| 997 | sigset_t oldset; |
| 998 | struct buffer_head *di_bh = NULL; |
| 999 | struct ocfs2_dinode *di = NULL; |
| 1000 | |
| 1001 | trace_ocfs2_delete_inode(inode->i_ino, |
| 1002 | (unsigned long long)OCFS2_I(inode)->ip_blkno, |
| 1003 | is_bad_inode(inode)); |
| 1004 | |
| 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. */ |
| 1008 | if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) |
| 1009 | goto bail; |
| 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 | |
| 1019 | dquot_initialize(inode); |
| 1020 | |
| 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. */ |
| 1025 | ocfs2_block_signals(&oldset); |
| 1026 | |
| 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 | } |
| 1038 | /* Lock down the inode. This gives us an up to date view of |
| 1039 | * it's metadata (for verification), and allows us to |
| 1040 | * serialize delete_inode on multiple nodes. |
| 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 | */ |
| 1046 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
| 1047 | if (status < 0) { |
| 1048 | if (status != -ENOENT) |
| 1049 | mlog_errno(status); |
| 1050 | ocfs2_cleanup_delete_inode(inode, 0); |
| 1051 | goto bail_unlock_nfs_sync; |
| 1052 | } |
| 1053 | |
| 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 | |
| 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) { |
| 1066 | /* Error and remote inode busy both mean we won't be |
| 1067 | * removing the inode, so they take almost the same |
| 1068 | * path. */ |
| 1069 | if (status < 0) |
| 1070 | mlog_errno(status); |
| 1071 | |
| 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. */ |
| 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) { |
| 1083 | if (status != -EDEADLK) |
| 1084 | mlog_errno(status); |
| 1085 | goto bail_unlock_inode; |
| 1086 | } |
| 1087 | |
| 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 | */ |
| 1097 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
| 1098 | |
| 1099 | bail_unlock_inode: |
| 1100 | ocfs2_inode_unlock(inode, 1); |
| 1101 | brelse(di_bh); |
| 1102 | |
| 1103 | bail_unlock_nfs_sync: |
| 1104 | ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0); |
| 1105 | |
| 1106 | bail_unblock: |
| 1107 | ocfs2_unblock_signals(&oldset); |
| 1108 | bail: |
| 1109 | return; |
| 1110 | } |
| 1111 | |
| 1112 | static void ocfs2_clear_inode(struct inode *inode) |
| 1113 | { |
| 1114 | int status; |
| 1115 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 1116 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
| 1117 | |
| 1118 | clear_inode(inode); |
| 1119 | trace_ocfs2_clear_inode((unsigned long long)oi->ip_blkno, |
| 1120 | inode->i_nlink); |
| 1121 | |
| 1122 | mlog_bug_on_msg(osb == NULL, |
| 1123 | "Inode=%lu\n", inode->i_ino); |
| 1124 | |
| 1125 | dquot_drop(inode); |
| 1126 | |
| 1127 | /* To preven remote deletes we hold open lock before, now it |
| 1128 | * is time to unlock PR and EX open locks. */ |
| 1129 | ocfs2_open_unlock(inode); |
| 1130 | |
| 1131 | /* Do these before all the other work so that we don't bounce |
| 1132 | * the downconvert thread while waiting to destroy the locks. */ |
| 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); |
| 1136 | |
| 1137 | ocfs2_resv_discard(&osb->osb_la_resmap, |
| 1138 | &oi->ip_la_data_resv); |
| 1139 | ocfs2_resv_init_once(&oi->ip_la_data_resv); |
| 1140 | |
| 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. */ |
| 1147 | if (!(oi->ip_flags & OCFS2_INODE_DELETED)) |
| 1148 | ocfs2_checkpoint_inode(inode); |
| 1149 | |
| 1150 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), |
| 1151 | "Clear inode of %llu, inode has io markers\n", |
| 1152 | (unsigned long long)oi->ip_blkno); |
| 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); |
| 1156 | |
| 1157 | ocfs2_extent_map_trunc(inode, 0); |
| 1158 | |
| 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); |
| 1164 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
| 1165 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
| 1166 | |
| 1167 | ocfs2_metadata_cache_exit(INODE_CACHE(inode)); |
| 1168 | |
| 1169 | mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached, |
| 1170 | "Clear inode of %llu, inode has %u cache items\n", |
| 1171 | (unsigned long long)oi->ip_blkno, |
| 1172 | INODE_CACHE(inode)->ci_num_cached); |
| 1173 | |
| 1174 | mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE), |
| 1175 | "Clear inode of %llu, inode has a bad flag\n", |
| 1176 | (unsigned long long)oi->ip_blkno); |
| 1177 | |
| 1178 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), |
| 1179 | "Clear inode of %llu, inode is locked\n", |
| 1180 | (unsigned long long)oi->ip_blkno); |
| 1181 | |
| 1182 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
| 1183 | "Clear inode of %llu, io_mutex is locked\n", |
| 1184 | (unsigned long long)oi->ip_blkno); |
| 1185 | mutex_unlock(&oi->ip_io_mutex); |
| 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), |
| 1192 | "Clear inode of %llu, alloc_sem is locked\n", |
| 1193 | (unsigned long long)oi->ip_blkno); |
| 1194 | up_write(&oi->ip_alloc_sem); |
| 1195 | |
| 1196 | mlog_bug_on_msg(oi->ip_open_count, |
| 1197 | "Clear inode of %llu has open count %d\n", |
| 1198 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); |
| 1199 | |
| 1200 | /* Clear all other flags. */ |
| 1201 | oi->ip_flags = 0; |
| 1202 | oi->ip_dir_start_lookup = 0; |
| 1203 | oi->ip_blkno = 0ULL; |
| 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 | */ |
| 1210 | jbd2_journal_release_jbd_inode(osb->journal->j_journal, |
| 1211 | &oi->ip_jinode); |
| 1212 | } |
| 1213 | |
| 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 { |
| 1220 | truncate_inode_pages_final(&inode->i_data); |
| 1221 | } |
| 1222 | ocfs2_clear_inode(inode); |
| 1223 | } |
| 1224 | |
| 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. */ |
| 1228 | int ocfs2_drop_inode(struct inode *inode) |
| 1229 | { |
| 1230 | struct ocfs2_inode_info *oi = OCFS2_I(inode); |
| 1231 | |
| 1232 | trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno, |
| 1233 | inode->i_nlink, oi->ip_flags); |
| 1234 | |
| 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; |
| 1242 | |
| 1243 | return 1; |
| 1244 | } |
| 1245 | |
| 1246 | /* |
| 1247 | * This is called from our getattr. |
| 1248 | */ |
| 1249 | int ocfs2_inode_revalidate(struct dentry *dentry) |
| 1250 | { |
| 1251 | struct inode *inode = d_inode(dentry); |
| 1252 | int status = 0; |
| 1253 | |
| 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); |
| 1257 | |
| 1258 | if (!inode) { |
| 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); |
| 1266 | status = -ENOENT; |
| 1267 | goto bail; |
| 1268 | } |
| 1269 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1270 | |
| 1271 | /* Let ocfs2_inode_lock do the work of updating our struct |
| 1272 | * inode for us. */ |
| 1273 | status = ocfs2_inode_lock(inode, NULL, 0); |
| 1274 | if (status < 0) { |
| 1275 | if (status != -ENOENT) |
| 1276 | mlog_errno(status); |
| 1277 | goto bail; |
| 1278 | } |
| 1279 | ocfs2_inode_unlock(inode, 0); |
| 1280 | bail: |
| 1281 | return status; |
| 1282 | } |
| 1283 | |
| 1284 | /* |
| 1285 | * Updates a disk inode from a |
| 1286 | * struct inode. |
| 1287 | * Only takes ip_lock. |
| 1288 | */ |
| 1289 | int ocfs2_mark_inode_dirty(handle_t *handle, |
| 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 | |
| 1296 | trace_ocfs2_mark_inode_dirty((unsigned long long)OCFS2_I(inode)->ip_blkno); |
| 1297 | |
| 1298 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh, |
| 1299 | OCFS2_JOURNAL_ACCESS_WRITE); |
| 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); |
| 1307 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
| 1308 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
| 1309 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
| 1310 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
| 1311 | |
| 1312 | fe->i_size = cpu_to_le64(i_size_read(inode)); |
| 1313 | ocfs2_set_links_count(fe, inode->i_nlink); |
| 1314 | fe->i_uid = cpu_to_le32(i_uid_read(inode)); |
| 1315 | fe->i_gid = cpu_to_le32(i_gid_read(inode)); |
| 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 | |
| 1324 | ocfs2_journal_dirty(handle, bh); |
| 1325 | ocfs2_update_inode_fsync_trans(handle, inode, 1); |
| 1326 | leave: |
| 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 | { |
| 1338 | spin_lock(&OCFS2_I(inode)->ip_lock); |
| 1339 | |
| 1340 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
| 1341 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
| 1342 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
| 1343 | ocfs2_set_inode_flags(inode); |
| 1344 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
| 1345 | set_nlink(inode, ocfs2_read_links_count(fe)); |
| 1346 | i_uid_write(inode, le32_to_cpu(fe->i_uid)); |
| 1347 | i_gid_write(inode, le32_to_cpu(fe->i_gid)); |
| 1348 | inode->i_mode = le16_to_cpu(fe->i_mode); |
| 1349 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
| 1350 | inode->i_blocks = 0; |
| 1351 | else |
| 1352 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
| 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 | } |
| 1362 | |
| 1363 | int ocfs2_validate_inode_block(struct super_block *sb, |
| 1364 | struct buffer_head *bh) |
| 1365 | { |
| 1366 | int rc; |
| 1367 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; |
| 1368 | |
| 1369 | trace_ocfs2_validate_inode_block((unsigned long long)bh->b_blocknr); |
| 1370 | |
| 1371 | BUG_ON(!buffer_uptodate(bh)); |
| 1372 | |
| 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); |
| 1379 | if (rc) { |
| 1380 | mlog(ML_ERROR, "Checksum failed for dinode %llu\n", |
| 1381 | (unsigned long long)bh->b_blocknr); |
| 1382 | goto bail; |
| 1383 | } |
| 1384 | |
| 1385 | /* |
| 1386 | * Errors after here are fatal. |
| 1387 | */ |
| 1388 | |
| 1389 | rc = -EINVAL; |
| 1390 | |
| 1391 | if (!OCFS2_IS_VALID_DINODE(di)) { |
| 1392 | rc = ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n", |
| 1393 | (unsigned long long)bh->b_blocknr, 7, |
| 1394 | di->i_signature); |
| 1395 | goto bail; |
| 1396 | } |
| 1397 | |
| 1398 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { |
| 1399 | rc = ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n", |
| 1400 | (unsigned long long)bh->b_blocknr, |
| 1401 | (unsigned long long)le64_to_cpu(di->i_blkno)); |
| 1402 | goto bail; |
| 1403 | } |
| 1404 | |
| 1405 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { |
| 1406 | rc = ocfs2_error(sb, |
| 1407 | "Invalid dinode #%llu: OCFS2_VALID_FL not set\n", |
| 1408 | (unsigned long long)bh->b_blocknr); |
| 1409 | goto bail; |
| 1410 | } |
| 1411 | |
| 1412 | if (le32_to_cpu(di->i_fs_generation) != |
| 1413 | OCFS2_SB(sb)->fs_generation) { |
| 1414 | rc = ocfs2_error(sb, |
| 1415 | "Invalid dinode #%llu: fs_generation is %u\n", |
| 1416 | (unsigned long long)bh->b_blocknr, |
| 1417 | le32_to_cpu(di->i_fs_generation)); |
| 1418 | goto bail; |
| 1419 | } |
| 1420 | |
| 1421 | rc = 0; |
| 1422 | |
| 1423 | bail: |
| 1424 | return rc; |
| 1425 | } |
| 1426 | |
| 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; |
| 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 | |
| 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 | |
| 1595 | rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno, |
| 1596 | 1, &tmp, flags, ocfs2_validate_inode_block); |
| 1597 | |
| 1598 | /* If ocfs2_read_blocks() got us a new bh, pass it up. */ |
| 1599 | if (!rc && !*bh) |
| 1600 | *bh = tmp; |
| 1601 | |
| 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 | } |
| 1609 | |
| 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 | |
| 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 | |
| 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, |
| 1655 | .co_get_super = ocfs2_inode_cache_get_super, |
| 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 | |