| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * super.c |
| 4 | * |
| 5 | * load/unload driver, mount/dismount volumes |
| 6 | * |
| 7 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. |
| 8 | */ |
| 9 | |
| 10 | #include <linux/module.h> |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/types.h> |
| 13 | #include <linux/slab.h> |
| 14 | #include <linux/highmem.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/random.h> |
| 17 | #include <linux/statfs.h> |
| 18 | #include <linux/moduleparam.h> |
| 19 | #include <linux/blkdev.h> |
| 20 | #include <linux/socket.h> |
| 21 | #include <linux/inet.h> |
| 22 | #include <linux/fs_parser.h> |
| 23 | #include <linux/fs_context.h> |
| 24 | #include <linux/crc32.h> |
| 25 | #include <linux/debugfs.h> |
| 26 | #include <linux/seq_file.h> |
| 27 | #include <linux/quotaops.h> |
| 28 | #include <linux/signal.h> |
| 29 | |
| 30 | #define CREATE_TRACE_POINTS |
| 31 | #include "ocfs2_trace.h" |
| 32 | |
| 33 | #include <cluster/masklog.h> |
| 34 | |
| 35 | #include "ocfs2.h" |
| 36 | |
| 37 | /* this should be the only file to include a version 1 header */ |
| 38 | #include "ocfs1_fs_compat.h" |
| 39 | |
| 40 | #include "alloc.h" |
| 41 | #include "aops.h" |
| 42 | #include "blockcheck.h" |
| 43 | #include "dlmglue.h" |
| 44 | #include "export.h" |
| 45 | #include "extent_map.h" |
| 46 | #include "heartbeat.h" |
| 47 | #include "inode.h" |
| 48 | #include "journal.h" |
| 49 | #include "localalloc.h" |
| 50 | #include "namei.h" |
| 51 | #include "slot_map.h" |
| 52 | #include "super.h" |
| 53 | #include "sysfile.h" |
| 54 | #include "uptodate.h" |
| 55 | #include "xattr.h" |
| 56 | #include "quota.h" |
| 57 | #include "refcounttree.h" |
| 58 | #include "suballoc.h" |
| 59 | |
| 60 | #include "buffer_head_io.h" |
| 61 | #include "filecheck.h" |
| 62 | |
| 63 | static struct kmem_cache *ocfs2_inode_cachep; |
| 64 | struct kmem_cache *ocfs2_dquot_cachep; |
| 65 | struct kmem_cache *ocfs2_qf_chunk_cachep; |
| 66 | |
| 67 | static struct dentry *ocfs2_debugfs_root; |
| 68 | |
| 69 | MODULE_AUTHOR("Oracle"); |
| 70 | MODULE_LICENSE("GPL"); |
| 71 | MODULE_DESCRIPTION("OCFS2 cluster file system"); |
| 72 | |
| 73 | struct mount_options |
| 74 | { |
| 75 | unsigned long commit_interval; |
| 76 | unsigned long mount_opt; |
| 77 | unsigned int atime_quantum; |
| 78 | unsigned short slot; |
| 79 | int localalloc_opt; |
| 80 | unsigned int resv_level; |
| 81 | int dir_resv_level; |
| 82 | char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; |
| 83 | bool user_stack; |
| 84 | }; |
| 85 | |
| 86 | static int ocfs2_parse_param(struct fs_context *fc, struct fs_parameter *param); |
| 87 | static int ocfs2_check_set_options(struct super_block *sb, |
| 88 | struct mount_options *options); |
| 89 | static int ocfs2_show_options(struct seq_file *s, struct dentry *root); |
| 90 | static void ocfs2_put_super(struct super_block *sb); |
| 91 | static int ocfs2_mount_volume(struct super_block *sb); |
| 92 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); |
| 93 | static int ocfs2_initialize_mem_caches(void); |
| 94 | static void ocfs2_free_mem_caches(void); |
| 95 | static void ocfs2_delete_osb(struct ocfs2_super *osb); |
| 96 | |
| 97 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
| 98 | |
| 99 | static int ocfs2_sync_fs(struct super_block *sb, int wait); |
| 100 | |
| 101 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); |
| 102 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); |
| 103 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
| 104 | static int ocfs2_check_volume(struct ocfs2_super *osb); |
| 105 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, |
| 106 | struct buffer_head *bh, |
| 107 | u32 sectsize, |
| 108 | struct ocfs2_blockcheck_stats *stats); |
| 109 | static int ocfs2_initialize_super(struct super_block *sb, |
| 110 | struct buffer_head *bh, |
| 111 | int sector_size, |
| 112 | struct ocfs2_blockcheck_stats *stats); |
| 113 | static int ocfs2_get_sector(struct super_block *sb, |
| 114 | struct buffer_head **bh, |
| 115 | int block, |
| 116 | int sect_size); |
| 117 | static struct inode *ocfs2_alloc_inode(struct super_block *sb); |
| 118 | static void ocfs2_free_inode(struct inode *inode); |
| 119 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); |
| 120 | static int ocfs2_enable_quotas(struct ocfs2_super *osb); |
| 121 | static void ocfs2_disable_quotas(struct ocfs2_super *osb); |
| 122 | |
| 123 | static struct dquot __rcu **ocfs2_get_dquots(struct inode *inode) |
| 124 | { |
| 125 | return OCFS2_I(inode)->i_dquot; |
| 126 | } |
| 127 | |
| 128 | static const struct super_operations ocfs2_sops = { |
| 129 | .statfs = ocfs2_statfs, |
| 130 | .alloc_inode = ocfs2_alloc_inode, |
| 131 | .free_inode = ocfs2_free_inode, |
| 132 | .drop_inode = ocfs2_drop_inode, |
| 133 | .evict_inode = ocfs2_evict_inode, |
| 134 | .sync_fs = ocfs2_sync_fs, |
| 135 | .put_super = ocfs2_put_super, |
| 136 | .show_options = ocfs2_show_options, |
| 137 | .quota_read = ocfs2_quota_read, |
| 138 | .quota_write = ocfs2_quota_write, |
| 139 | .get_dquots = ocfs2_get_dquots, |
| 140 | }; |
| 141 | |
| 142 | enum { |
| 143 | Opt_barrier, |
| 144 | Opt_errors, |
| 145 | Opt_intr, |
| 146 | Opt_heartbeat, |
| 147 | Opt_data, |
| 148 | Opt_atime_quantum, |
| 149 | Opt_slot, |
| 150 | Opt_commit, |
| 151 | Opt_localalloc, |
| 152 | Opt_localflocks, |
| 153 | Opt_stack, |
| 154 | Opt_user_xattr, |
| 155 | Opt_inode64, |
| 156 | Opt_acl, |
| 157 | Opt_usrquota, |
| 158 | Opt_grpquota, |
| 159 | Opt_coherency, |
| 160 | Opt_resv_level, |
| 161 | Opt_dir_resv_level, |
| 162 | Opt_journal_async_commit, |
| 163 | }; |
| 164 | |
| 165 | static const struct constant_table ocfs2_param_errors[] = { |
| 166 | {"panic", OCFS2_MOUNT_ERRORS_PANIC}, |
| 167 | {"remount-ro", OCFS2_MOUNT_ERRORS_ROFS}, |
| 168 | {"continue", OCFS2_MOUNT_ERRORS_CONT}, |
| 169 | {} |
| 170 | }; |
| 171 | |
| 172 | static const struct constant_table ocfs2_param_heartbeat[] = { |
| 173 | {"local", OCFS2_MOUNT_HB_LOCAL}, |
| 174 | {"none", OCFS2_MOUNT_HB_NONE}, |
| 175 | {"global", OCFS2_MOUNT_HB_GLOBAL}, |
| 176 | {} |
| 177 | }; |
| 178 | |
| 179 | static const struct constant_table ocfs2_param_data[] = { |
| 180 | {"writeback", OCFS2_MOUNT_DATA_WRITEBACK}, |
| 181 | {"ordered", 0}, |
| 182 | {} |
| 183 | }; |
| 184 | |
| 185 | static const struct constant_table ocfs2_param_coherency[] = { |
| 186 | {"buffered", OCFS2_MOUNT_COHERENCY_BUFFERED}, |
| 187 | {"full", 0}, |
| 188 | {} |
| 189 | }; |
| 190 | |
| 191 | static const struct fs_parameter_spec ocfs2_param_spec[] = { |
| 192 | fsparam_u32 ("barrier", Opt_barrier), |
| 193 | fsparam_enum ("errors", Opt_errors, ocfs2_param_errors), |
| 194 | fsparam_flag_no ("intr", Opt_intr), |
| 195 | fsparam_enum ("heartbeat", Opt_heartbeat, ocfs2_param_heartbeat), |
| 196 | fsparam_enum ("data", Opt_data, ocfs2_param_data), |
| 197 | fsparam_u32 ("atime_quantum", Opt_atime_quantum), |
| 198 | fsparam_u32 ("preferred_slot", Opt_slot), |
| 199 | fsparam_u32 ("commit", Opt_commit), |
| 200 | fsparam_s32 ("localalloc", Opt_localalloc), |
| 201 | fsparam_flag ("localflocks", Opt_localflocks), |
| 202 | fsparam_string ("cluster_stack", Opt_stack), |
| 203 | fsparam_flag_no ("user_xattr", Opt_user_xattr), |
| 204 | fsparam_flag ("inode64", Opt_inode64), |
| 205 | fsparam_flag_no ("acl", Opt_acl), |
| 206 | fsparam_flag ("usrquota", Opt_usrquota), |
| 207 | fsparam_flag ("grpquota", Opt_grpquota), |
| 208 | fsparam_enum ("coherency", Opt_coherency, ocfs2_param_coherency), |
| 209 | fsparam_u32 ("resv_level", Opt_resv_level), |
| 210 | fsparam_u32 ("dir_resv_level", Opt_dir_resv_level), |
| 211 | fsparam_flag ("journal_async_commit", Opt_journal_async_commit), |
| 212 | {} |
| 213 | }; |
| 214 | |
| 215 | #ifdef CONFIG_DEBUG_FS |
| 216 | static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) |
| 217 | { |
| 218 | struct ocfs2_cluster_connection *cconn = osb->cconn; |
| 219 | struct ocfs2_recovery_map *rm = osb->recovery_map; |
| 220 | struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan; |
| 221 | int i, out = 0; |
| 222 | unsigned long flags; |
| 223 | |
| 224 | out += scnprintf(buf + out, len - out, |
| 225 | "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n", |
| 226 | "Device", osb->dev_str, osb->uuid_str, |
| 227 | osb->fs_generation, osb->vol_label); |
| 228 | |
| 229 | out += scnprintf(buf + out, len - out, |
| 230 | "%10s => State: %d Flags: 0x%lX\n", "Volume", |
| 231 | atomic_read(&osb->vol_state), osb->osb_flags); |
| 232 | |
| 233 | out += scnprintf(buf + out, len - out, |
| 234 | "%10s => Block: %lu Cluster: %d\n", "Sizes", |
| 235 | osb->sb->s_blocksize, osb->s_clustersize); |
| 236 | |
| 237 | out += scnprintf(buf + out, len - out, |
| 238 | "%10s => Compat: 0x%X Incompat: 0x%X " |
| 239 | "ROcompat: 0x%X\n", |
| 240 | "Features", osb->s_feature_compat, |
| 241 | osb->s_feature_incompat, osb->s_feature_ro_compat); |
| 242 | |
| 243 | out += scnprintf(buf + out, len - out, |
| 244 | "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount", |
| 245 | osb->s_mount_opt, osb->s_atime_quantum); |
| 246 | |
| 247 | if (cconn) { |
| 248 | out += scnprintf(buf + out, len - out, |
| 249 | "%10s => Stack: %s Name: %*s " |
| 250 | "Version: %d.%d\n", "Cluster", |
| 251 | (*osb->osb_cluster_stack == '\0' ? |
| 252 | "o2cb" : osb->osb_cluster_stack), |
| 253 | cconn->cc_namelen, cconn->cc_name, |
| 254 | cconn->cc_version.pv_major, |
| 255 | cconn->cc_version.pv_minor); |
| 256 | } |
| 257 | |
| 258 | spin_lock_irqsave(&osb->dc_task_lock, flags); |
| 259 | out += scnprintf(buf + out, len - out, |
| 260 | "%10s => Pid: %d Count: %lu WakeSeq: %lu " |
| 261 | "WorkSeq: %lu\n", "DownCnvt", |
| 262 | (osb->dc_task ? task_pid_nr(osb->dc_task) : -1), |
| 263 | osb->blocked_lock_count, osb->dc_wake_sequence, |
| 264 | osb->dc_work_sequence); |
| 265 | spin_unlock_irqrestore(&osb->dc_task_lock, flags); |
| 266 | |
| 267 | spin_lock(&osb->osb_lock); |
| 268 | out += scnprintf(buf + out, len - out, "%10s => Pid: %d Nodes:", |
| 269 | "Recovery", |
| 270 | (osb->recovery_thread_task ? |
| 271 | task_pid_nr(osb->recovery_thread_task) : -1)); |
| 272 | if (rm->rm_used == 0) |
| 273 | out += scnprintf(buf + out, len - out, " None\n"); |
| 274 | else { |
| 275 | for (i = 0; i < rm->rm_used; i++) |
| 276 | out += scnprintf(buf + out, len - out, " %d", |
| 277 | rm->rm_entries[i]); |
| 278 | out += scnprintf(buf + out, len - out, "\n"); |
| 279 | } |
| 280 | spin_unlock(&osb->osb_lock); |
| 281 | |
| 282 | out += scnprintf(buf + out, len - out, |
| 283 | "%10s => Pid: %d Interval: %lu\n", "Commit", |
| 284 | (osb->commit_task ? task_pid_nr(osb->commit_task) : -1), |
| 285 | osb->osb_commit_interval); |
| 286 | |
| 287 | out += scnprintf(buf + out, len - out, |
| 288 | "%10s => State: %d TxnId: %lu NumTxns: %d\n", |
| 289 | "Journal", osb->journal->j_state, |
| 290 | osb->journal->j_trans_id, |
| 291 | atomic_read(&osb->journal->j_num_trans)); |
| 292 | |
| 293 | out += scnprintf(buf + out, len - out, |
| 294 | "%10s => GlobalAllocs: %d LocalAllocs: %d " |
| 295 | "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", |
| 296 | "Stats", |
| 297 | atomic_read(&osb->alloc_stats.bitmap_data), |
| 298 | atomic_read(&osb->alloc_stats.local_data), |
| 299 | atomic_read(&osb->alloc_stats.bg_allocs), |
| 300 | atomic_read(&osb->alloc_stats.moves), |
| 301 | atomic_read(&osb->alloc_stats.bg_extends)); |
| 302 | |
| 303 | out += scnprintf(buf + out, len - out, |
| 304 | "%10s => State: %u Descriptor: %llu Size: %u bits " |
| 305 | "Default: %u bits\n", |
| 306 | "LocalAlloc", osb->local_alloc_state, |
| 307 | (unsigned long long)osb->la_last_gd, |
| 308 | osb->local_alloc_bits, osb->local_alloc_default_bits); |
| 309 | |
| 310 | spin_lock(&osb->osb_lock); |
| 311 | out += scnprintf(buf + out, len - out, |
| 312 | "%10s => InodeSlot: %d StolenInodes: %d, " |
| 313 | "MetaSlot: %d StolenMeta: %d\n", "Steal", |
| 314 | osb->s_inode_steal_slot, |
| 315 | atomic_read(&osb->s_num_inodes_stolen), |
| 316 | osb->s_meta_steal_slot, |
| 317 | atomic_read(&osb->s_num_meta_stolen)); |
| 318 | spin_unlock(&osb->osb_lock); |
| 319 | |
| 320 | out += scnprintf(buf + out, len - out, "OrphanScan => "); |
| 321 | out += scnprintf(buf + out, len - out, "Local: %u Global: %u ", |
| 322 | os->os_count, os->os_seqno); |
| 323 | out += scnprintf(buf + out, len - out, " Last Scan: "); |
| 324 | if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
| 325 | out += scnprintf(buf + out, len - out, "Disabled\n"); |
| 326 | else |
| 327 | out += scnprintf(buf + out, len - out, "%lu seconds ago\n", |
| 328 | (unsigned long)(ktime_get_seconds() - os->os_scantime)); |
| 329 | |
| 330 | out += scnprintf(buf + out, len - out, "%10s => %3s %10s\n", |
| 331 | "Slots", "Num", "RecoGen"); |
| 332 | for (i = 0; i < osb->max_slots; ++i) { |
| 333 | out += scnprintf(buf + out, len - out, |
| 334 | "%10s %c %3d %10d\n", |
| 335 | " ", |
| 336 | (i == osb->slot_num ? '*' : ' '), |
| 337 | i, osb->slot_recovery_generations[i]); |
| 338 | } |
| 339 | |
| 340 | return out; |
| 341 | } |
| 342 | |
| 343 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) |
| 344 | { |
| 345 | struct ocfs2_super *osb = inode->i_private; |
| 346 | char *buf = NULL; |
| 347 | |
| 348 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| 349 | if (!buf) |
| 350 | goto bail; |
| 351 | |
| 352 | i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE)); |
| 353 | |
| 354 | file->private_data = buf; |
| 355 | |
| 356 | return 0; |
| 357 | bail: |
| 358 | return -ENOMEM; |
| 359 | } |
| 360 | |
| 361 | static int ocfs2_debug_release(struct inode *inode, struct file *file) |
| 362 | { |
| 363 | kfree(file->private_data); |
| 364 | return 0; |
| 365 | } |
| 366 | |
| 367 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, |
| 368 | size_t nbytes, loff_t *ppos) |
| 369 | { |
| 370 | return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, |
| 371 | i_size_read(file->f_mapping->host)); |
| 372 | } |
| 373 | #else |
| 374 | static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) |
| 375 | { |
| 376 | return 0; |
| 377 | } |
| 378 | static int ocfs2_debug_release(struct inode *inode, struct file *file) |
| 379 | { |
| 380 | return 0; |
| 381 | } |
| 382 | static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, |
| 383 | size_t nbytes, loff_t *ppos) |
| 384 | { |
| 385 | return 0; |
| 386 | } |
| 387 | #endif /* CONFIG_DEBUG_FS */ |
| 388 | |
| 389 | static const struct file_operations ocfs2_osb_debug_fops = { |
| 390 | .open = ocfs2_osb_debug_open, |
| 391 | .release = ocfs2_debug_release, |
| 392 | .read = ocfs2_debug_read, |
| 393 | .llseek = generic_file_llseek, |
| 394 | }; |
| 395 | |
| 396 | static int ocfs2_sync_fs(struct super_block *sb, int wait) |
| 397 | { |
| 398 | int status; |
| 399 | tid_t target; |
| 400 | struct ocfs2_super *osb = OCFS2_SB(sb); |
| 401 | |
| 402 | if (ocfs2_is_hard_readonly(osb)) |
| 403 | return -EROFS; |
| 404 | |
| 405 | if (wait) { |
| 406 | status = ocfs2_flush_truncate_log(osb); |
| 407 | if (status < 0) |
| 408 | mlog_errno(status); |
| 409 | } else { |
| 410 | ocfs2_schedule_truncate_log_flush(osb, 0); |
| 411 | } |
| 412 | |
| 413 | if (jbd2_journal_start_commit(osb->journal->j_journal, |
| 414 | &target)) { |
| 415 | if (wait) |
| 416 | jbd2_log_wait_commit(osb->journal->j_journal, |
| 417 | target); |
| 418 | } |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino) |
| 423 | { |
| 424 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA) |
| 425 | && (ino == USER_QUOTA_SYSTEM_INODE |
| 426 | || ino == LOCAL_USER_QUOTA_SYSTEM_INODE)) |
| 427 | return 0; |
| 428 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA) |
| 429 | && (ino == GROUP_QUOTA_SYSTEM_INODE |
| 430 | || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE)) |
| 431 | return 0; |
| 432 | return 1; |
| 433 | } |
| 434 | |
| 435 | static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) |
| 436 | { |
| 437 | struct inode *new = NULL; |
| 438 | int status = 0; |
| 439 | int i; |
| 440 | |
| 441 | new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
| 442 | if (IS_ERR(new)) { |
| 443 | status = PTR_ERR(new); |
| 444 | mlog_errno(status); |
| 445 | goto bail; |
| 446 | } |
| 447 | osb->root_inode = new; |
| 448 | |
| 449 | new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); |
| 450 | if (IS_ERR(new)) { |
| 451 | status = PTR_ERR(new); |
| 452 | mlog_errno(status); |
| 453 | goto bail; |
| 454 | } |
| 455 | osb->sys_root_inode = new; |
| 456 | |
| 457 | for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; |
| 458 | i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { |
| 459 | if (!ocfs2_need_system_inode(osb, i)) |
| 460 | continue; |
| 461 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
| 462 | if (!new) { |
| 463 | ocfs2_release_system_inodes(osb); |
| 464 | status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL; |
| 465 | mlog_errno(status); |
| 466 | mlog(ML_ERROR, "Unable to load system inode %d, " |
| 467 | "possibly corrupt fs?", i); |
| 468 | goto bail; |
| 469 | } |
| 470 | // the array now has one ref, so drop this one |
| 471 | iput(new); |
| 472 | } |
| 473 | |
| 474 | bail: |
| 475 | if (status) |
| 476 | mlog_errno(status); |
| 477 | return status; |
| 478 | } |
| 479 | |
| 480 | static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) |
| 481 | { |
| 482 | struct inode *new = NULL; |
| 483 | int status = 0; |
| 484 | int i; |
| 485 | |
| 486 | for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; |
| 487 | i < NUM_SYSTEM_INODES; |
| 488 | i++) { |
| 489 | if (!ocfs2_need_system_inode(osb, i)) |
| 490 | continue; |
| 491 | new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); |
| 492 | if (!new) { |
| 493 | ocfs2_release_system_inodes(osb); |
| 494 | status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL; |
| 495 | mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", |
| 496 | status, i, osb->slot_num); |
| 497 | goto bail; |
| 498 | } |
| 499 | /* the array now has one ref, so drop this one */ |
| 500 | iput(new); |
| 501 | } |
| 502 | |
| 503 | bail: |
| 504 | if (status) |
| 505 | mlog_errno(status); |
| 506 | return status; |
| 507 | } |
| 508 | |
| 509 | static void ocfs2_release_system_inodes(struct ocfs2_super *osb) |
| 510 | { |
| 511 | int i; |
| 512 | struct inode *inode; |
| 513 | |
| 514 | for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) { |
| 515 | inode = osb->global_system_inodes[i]; |
| 516 | if (inode) { |
| 517 | iput(inode); |
| 518 | osb->global_system_inodes[i] = NULL; |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | inode = osb->sys_root_inode; |
| 523 | if (inode) { |
| 524 | iput(inode); |
| 525 | osb->sys_root_inode = NULL; |
| 526 | } |
| 527 | |
| 528 | inode = osb->root_inode; |
| 529 | if (inode) { |
| 530 | iput(inode); |
| 531 | osb->root_inode = NULL; |
| 532 | } |
| 533 | |
| 534 | if (!osb->local_system_inodes) |
| 535 | return; |
| 536 | |
| 537 | for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) { |
| 538 | if (osb->local_system_inodes[i]) { |
| 539 | iput(osb->local_system_inodes[i]); |
| 540 | osb->local_system_inodes[i] = NULL; |
| 541 | } |
| 542 | } |
| 543 | |
| 544 | kfree(osb->local_system_inodes); |
| 545 | osb->local_system_inodes = NULL; |
| 546 | } |
| 547 | |
| 548 | /* We're allocating fs objects, use GFP_NOFS */ |
| 549 | static struct inode *ocfs2_alloc_inode(struct super_block *sb) |
| 550 | { |
| 551 | struct ocfs2_inode_info *oi; |
| 552 | |
| 553 | oi = alloc_inode_sb(sb, ocfs2_inode_cachep, GFP_NOFS); |
| 554 | if (!oi) |
| 555 | return NULL; |
| 556 | |
| 557 | oi->i_sync_tid = 0; |
| 558 | oi->i_datasync_tid = 0; |
| 559 | memset(&oi->i_dquot, 0, sizeof(oi->i_dquot)); |
| 560 | |
| 561 | jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); |
| 562 | return &oi->vfs_inode; |
| 563 | } |
| 564 | |
| 565 | static void ocfs2_free_inode(struct inode *inode) |
| 566 | { |
| 567 | kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); |
| 568 | } |
| 569 | |
| 570 | static unsigned long long ocfs2_max_file_offset(unsigned int bbits, |
| 571 | unsigned int cbits) |
| 572 | { |
| 573 | unsigned int bytes = 1 << cbits; |
| 574 | unsigned int trim = bytes; |
| 575 | unsigned int bitshift = 32; |
| 576 | |
| 577 | /* |
| 578 | * i_size and all block offsets in ocfs2 are always 64 bits |
| 579 | * wide. i_clusters is 32 bits, in cluster-sized units. So on |
| 580 | * 64 bit platforms, cluster size will be the limiting factor. |
| 581 | */ |
| 582 | |
| 583 | #if BITS_PER_LONG == 32 |
| 584 | BUILD_BUG_ON(sizeof(sector_t) != 8); |
| 585 | /* |
| 586 | * We might be limited by page cache size. |
| 587 | */ |
| 588 | if (bytes > PAGE_SIZE) { |
| 589 | bytes = PAGE_SIZE; |
| 590 | trim = 1; |
| 591 | /* |
| 592 | * Shift by 31 here so that we don't get larger than |
| 593 | * MAX_LFS_FILESIZE |
| 594 | */ |
| 595 | bitshift = 31; |
| 596 | } |
| 597 | #endif |
| 598 | |
| 599 | /* |
| 600 | * Trim by a whole cluster when we can actually approach the |
| 601 | * on-disk limits. Otherwise we can overflow i_clusters when |
| 602 | * an extent start is at the max offset. |
| 603 | */ |
| 604 | return (((unsigned long long)bytes) << bitshift) - trim; |
| 605 | } |
| 606 | |
| 607 | static int ocfs2_reconfigure(struct fs_context *fc) |
| 608 | { |
| 609 | int incompat_features; |
| 610 | int ret = 0; |
| 611 | struct mount_options *parsed_options = fc->fs_private; |
| 612 | struct super_block *sb = fc->root->d_sb; |
| 613 | struct ocfs2_super *osb = OCFS2_SB(sb); |
| 614 | u32 tmp; |
| 615 | |
| 616 | sync_filesystem(sb); |
| 617 | |
| 618 | if (!ocfs2_check_set_options(sb, parsed_options)) { |
| 619 | ret = -EINVAL; |
| 620 | goto out; |
| 621 | } |
| 622 | |
| 623 | tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL | |
| 624 | OCFS2_MOUNT_HB_NONE; |
| 625 | if ((osb->s_mount_opt & tmp) != (parsed_options->mount_opt & tmp)) { |
| 626 | ret = -EINVAL; |
| 627 | mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); |
| 628 | goto out; |
| 629 | } |
| 630 | |
| 631 | if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != |
| 632 | (parsed_options->mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { |
| 633 | ret = -EINVAL; |
| 634 | mlog(ML_ERROR, "Cannot change data mode on remount\n"); |
| 635 | goto out; |
| 636 | } |
| 637 | |
| 638 | /* Probably don't want this on remount; it might |
| 639 | * mess with other nodes */ |
| 640 | if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && |
| 641 | (parsed_options->mount_opt & OCFS2_MOUNT_INODE64)) { |
| 642 | ret = -EINVAL; |
| 643 | mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); |
| 644 | goto out; |
| 645 | } |
| 646 | |
| 647 | /* We're going to/from readonly mode. */ |
| 648 | if ((bool)(fc->sb_flags & SB_RDONLY) != sb_rdonly(sb)) { |
| 649 | /* Disable quota accounting before remounting RO */ |
| 650 | if (fc->sb_flags & SB_RDONLY) { |
| 651 | ret = ocfs2_susp_quotas(osb, 0); |
| 652 | if (ret < 0) |
| 653 | goto out; |
| 654 | } |
| 655 | /* Lock here so the check of HARD_RO and the potential |
| 656 | * setting of SOFT_RO is atomic. */ |
| 657 | spin_lock(&osb->osb_lock); |
| 658 | if (osb->osb_flags & OCFS2_OSB_HARD_RO) { |
| 659 | mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); |
| 660 | ret = -EROFS; |
| 661 | goto unlock_osb; |
| 662 | } |
| 663 | |
| 664 | if (fc->sb_flags & SB_RDONLY) { |
| 665 | sb->s_flags |= SB_RDONLY; |
| 666 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; |
| 667 | } else { |
| 668 | if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { |
| 669 | mlog(ML_ERROR, "Cannot remount RDWR " |
| 670 | "filesystem due to previous errors.\n"); |
| 671 | ret = -EROFS; |
| 672 | goto unlock_osb; |
| 673 | } |
| 674 | incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); |
| 675 | if (incompat_features) { |
| 676 | mlog(ML_ERROR, "Cannot remount RDWR because " |
| 677 | "of unsupported optional features " |
| 678 | "(%x).\n", incompat_features); |
| 679 | ret = -EINVAL; |
| 680 | goto unlock_osb; |
| 681 | } |
| 682 | sb->s_flags &= ~SB_RDONLY; |
| 683 | osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; |
| 684 | } |
| 685 | trace_ocfs2_remount(sb->s_flags, osb->osb_flags, fc->sb_flags); |
| 686 | unlock_osb: |
| 687 | spin_unlock(&osb->osb_lock); |
| 688 | /* Enable quota accounting after remounting RW */ |
| 689 | if (!ret && !(fc->sb_flags & SB_RDONLY)) { |
| 690 | if (sb_any_quota_suspended(sb)) |
| 691 | ret = ocfs2_susp_quotas(osb, 1); |
| 692 | else |
| 693 | ret = ocfs2_enable_quotas(osb); |
| 694 | if (ret < 0) { |
| 695 | /* Return back changes... */ |
| 696 | spin_lock(&osb->osb_lock); |
| 697 | sb->s_flags |= SB_RDONLY; |
| 698 | osb->osb_flags |= OCFS2_OSB_SOFT_RO; |
| 699 | spin_unlock(&osb->osb_lock); |
| 700 | goto out; |
| 701 | } |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | if (!ret) { |
| 706 | /* Only save off the new mount options in case of a successful |
| 707 | * remount. */ |
| 708 | osb->s_mount_opt = parsed_options->mount_opt; |
| 709 | osb->s_atime_quantum = parsed_options->atime_quantum; |
| 710 | osb->preferred_slot = parsed_options->slot; |
| 711 | if (parsed_options->commit_interval) |
| 712 | osb->osb_commit_interval = parsed_options->commit_interval; |
| 713 | |
| 714 | if (!ocfs2_is_hard_readonly(osb)) |
| 715 | ocfs2_set_journal_params(osb); |
| 716 | |
| 717 | sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | |
| 718 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? |
| 719 | SB_POSIXACL : 0); |
| 720 | } |
| 721 | out: |
| 722 | return ret; |
| 723 | } |
| 724 | |
| 725 | static int ocfs2_sb_probe(struct super_block *sb, |
| 726 | struct buffer_head **bh, |
| 727 | int *sector_size, |
| 728 | struct ocfs2_blockcheck_stats *stats) |
| 729 | { |
| 730 | int status, tmpstat; |
| 731 | struct ocfs1_vol_disk_hdr *hdr; |
| 732 | struct ocfs2_dinode *di; |
| 733 | int blksize; |
| 734 | |
| 735 | *bh = NULL; |
| 736 | |
| 737 | /* may be > 512 */ |
| 738 | *sector_size = bdev_logical_block_size(sb->s_bdev); |
| 739 | if (*sector_size > OCFS2_MAX_BLOCKSIZE) { |
| 740 | mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", |
| 741 | *sector_size, OCFS2_MAX_BLOCKSIZE); |
| 742 | status = -EINVAL; |
| 743 | goto bail; |
| 744 | } |
| 745 | |
| 746 | /* Can this really happen? */ |
| 747 | if (*sector_size < OCFS2_MIN_BLOCKSIZE) |
| 748 | *sector_size = OCFS2_MIN_BLOCKSIZE; |
| 749 | |
| 750 | /* check block zero for old format */ |
| 751 | status = ocfs2_get_sector(sb, bh, 0, *sector_size); |
| 752 | if (status < 0) { |
| 753 | mlog_errno(status); |
| 754 | goto bail; |
| 755 | } |
| 756 | hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; |
| 757 | if (hdr->major_version == OCFS1_MAJOR_VERSION) { |
| 758 | mlog(ML_ERROR, "incompatible version: %u.%u\n", |
| 759 | hdr->major_version, hdr->minor_version); |
| 760 | status = -EINVAL; |
| 761 | } |
| 762 | if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, |
| 763 | strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { |
| 764 | mlog(ML_ERROR, "incompatible volume signature: %8s\n", |
| 765 | hdr->signature); |
| 766 | status = -EINVAL; |
| 767 | } |
| 768 | brelse(*bh); |
| 769 | *bh = NULL; |
| 770 | if (status < 0) { |
| 771 | mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " |
| 772 | "upgraded before mounting with ocfs v2\n"); |
| 773 | goto bail; |
| 774 | } |
| 775 | |
| 776 | /* |
| 777 | * Now check at magic offset for 512, 1024, 2048, 4096 |
| 778 | * blocksizes. 4096 is the maximum blocksize because it is |
| 779 | * the minimum clustersize. |
| 780 | */ |
| 781 | status = -EINVAL; |
| 782 | for (blksize = *sector_size; |
| 783 | blksize <= OCFS2_MAX_BLOCKSIZE; |
| 784 | blksize <<= 1) { |
| 785 | tmpstat = ocfs2_get_sector(sb, bh, |
| 786 | OCFS2_SUPER_BLOCK_BLKNO, |
| 787 | blksize); |
| 788 | if (tmpstat < 0) { |
| 789 | status = tmpstat; |
| 790 | mlog_errno(status); |
| 791 | break; |
| 792 | } |
| 793 | di = (struct ocfs2_dinode *) (*bh)->b_data; |
| 794 | memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats)); |
| 795 | spin_lock_init(&stats->b_lock); |
| 796 | tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats); |
| 797 | if (tmpstat < 0) { |
| 798 | brelse(*bh); |
| 799 | *bh = NULL; |
| 800 | } |
| 801 | if (tmpstat != -EAGAIN) { |
| 802 | status = tmpstat; |
| 803 | break; |
| 804 | } |
| 805 | } |
| 806 | |
| 807 | bail: |
| 808 | return status; |
| 809 | } |
| 810 | |
| 811 | static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) |
| 812 | { |
| 813 | u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL; |
| 814 | |
| 815 | if (osb->s_mount_opt & hb_enabled) { |
| 816 | if (ocfs2_mount_local(osb)) { |
| 817 | mlog(ML_ERROR, "Cannot heartbeat on a locally " |
| 818 | "mounted device.\n"); |
| 819 | return -EINVAL; |
| 820 | } |
| 821 | if (ocfs2_userspace_stack(osb)) { |
| 822 | mlog(ML_ERROR, "Userspace stack expected, but " |
| 823 | "o2cb heartbeat arguments passed to mount\n"); |
| 824 | return -EINVAL; |
| 825 | } |
| 826 | if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) && |
| 827 | !ocfs2_cluster_o2cb_global_heartbeat(osb)) || |
| 828 | ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) && |
| 829 | ocfs2_cluster_o2cb_global_heartbeat(osb))) { |
| 830 | mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n"); |
| 831 | return -EINVAL; |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | if (!(osb->s_mount_opt & hb_enabled)) { |
| 836 | if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && |
| 837 | !ocfs2_userspace_stack(osb)) { |
| 838 | mlog(ML_ERROR, "Heartbeat has to be started to mount " |
| 839 | "a read-write clustered device.\n"); |
| 840 | return -EINVAL; |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | return 0; |
| 845 | } |
| 846 | |
| 847 | /* |
| 848 | * If we're using a userspace stack, mount should have passed |
| 849 | * a name that matches the disk. If not, mount should not |
| 850 | * have passed a stack. |
| 851 | */ |
| 852 | static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, |
| 853 | struct mount_options *mopt) |
| 854 | { |
| 855 | if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { |
| 856 | mlog(ML_ERROR, |
| 857 | "cluster stack passed to mount, but this filesystem " |
| 858 | "does not support it\n"); |
| 859 | return -EINVAL; |
| 860 | } |
| 861 | |
| 862 | if (ocfs2_userspace_stack(osb) && |
| 863 | strncmp(osb->osb_cluster_stack, mopt->cluster_stack, |
| 864 | OCFS2_STACK_LABEL_LEN)) { |
| 865 | mlog(ML_ERROR, |
| 866 | "cluster stack passed to mount (\"%s\") does not " |
| 867 | "match the filesystem (\"%s\")\n", |
| 868 | mopt->cluster_stack, |
| 869 | osb->osb_cluster_stack); |
| 870 | return -EINVAL; |
| 871 | } |
| 872 | |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend) |
| 877 | { |
| 878 | int type; |
| 879 | struct super_block *sb = osb->sb; |
| 880 | unsigned int feature[OCFS2_MAXQUOTAS] = { |
| 881 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA, |
| 882 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; |
| 883 | int status = 0; |
| 884 | |
| 885 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
| 886 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) |
| 887 | continue; |
| 888 | if (unsuspend) |
| 889 | status = dquot_resume(sb, type); |
| 890 | else { |
| 891 | struct ocfs2_mem_dqinfo *oinfo; |
| 892 | |
| 893 | /* Cancel periodic syncing before suspending */ |
| 894 | oinfo = sb_dqinfo(sb, type)->dqi_priv; |
| 895 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); |
| 896 | status = dquot_suspend(sb, type); |
| 897 | } |
| 898 | if (status < 0) |
| 899 | break; |
| 900 | } |
| 901 | if (status < 0) |
| 902 | mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on " |
| 903 | "remount (error = %d).\n", status); |
| 904 | return status; |
| 905 | } |
| 906 | |
| 907 | static int ocfs2_enable_quotas(struct ocfs2_super *osb) |
| 908 | { |
| 909 | struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL }; |
| 910 | struct super_block *sb = osb->sb; |
| 911 | unsigned int feature[OCFS2_MAXQUOTAS] = { |
| 912 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA, |
| 913 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; |
| 914 | unsigned int ino[OCFS2_MAXQUOTAS] = { |
| 915 | LOCAL_USER_QUOTA_SYSTEM_INODE, |
| 916 | LOCAL_GROUP_QUOTA_SYSTEM_INODE }; |
| 917 | int status; |
| 918 | int type; |
| 919 | |
| 920 | sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE; |
| 921 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
| 922 | if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) |
| 923 | continue; |
| 924 | inode[type] = ocfs2_get_system_file_inode(osb, ino[type], |
| 925 | osb->slot_num); |
| 926 | if (!inode[type]) { |
| 927 | status = -ENOENT; |
| 928 | goto out_quota_off; |
| 929 | } |
| 930 | status = dquot_load_quota_inode(inode[type], type, QFMT_OCFS2, |
| 931 | DQUOT_USAGE_ENABLED); |
| 932 | if (status < 0) |
| 933 | goto out_quota_off; |
| 934 | } |
| 935 | |
| 936 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
| 937 | iput(inode[type]); |
| 938 | return 0; |
| 939 | out_quota_off: |
| 940 | ocfs2_disable_quotas(osb); |
| 941 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) |
| 942 | iput(inode[type]); |
| 943 | mlog_errno(status); |
| 944 | return status; |
| 945 | } |
| 946 | |
| 947 | static void ocfs2_disable_quotas(struct ocfs2_super *osb) |
| 948 | { |
| 949 | int type; |
| 950 | struct inode *inode; |
| 951 | struct super_block *sb = osb->sb; |
| 952 | struct ocfs2_mem_dqinfo *oinfo; |
| 953 | |
| 954 | /* We mostly ignore errors in this function because there's not much |
| 955 | * we can do when we see them */ |
| 956 | for (type = 0; type < OCFS2_MAXQUOTAS; type++) { |
| 957 | if (!sb_has_quota_loaded(sb, type)) |
| 958 | continue; |
| 959 | if (!sb_has_quota_suspended(sb, type)) { |
| 960 | oinfo = sb_dqinfo(sb, type)->dqi_priv; |
| 961 | cancel_delayed_work_sync(&oinfo->dqi_sync_work); |
| 962 | } |
| 963 | inode = igrab(sb->s_dquot.files[type]); |
| 964 | /* Turn off quotas. This will remove all dquot structures from |
| 965 | * memory and so they will be automatically synced to global |
| 966 | * quota files */ |
| 967 | dquot_disable(sb, type, DQUOT_USAGE_ENABLED | |
| 968 | DQUOT_LIMITS_ENABLED); |
| 969 | iput(inode); |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | static int ocfs2_fill_super(struct super_block *sb, struct fs_context *fc) |
| 974 | { |
| 975 | struct dentry *root; |
| 976 | int status, sector_size; |
| 977 | struct mount_options *parsed_options = fc->fs_private; |
| 978 | struct inode *inode = NULL; |
| 979 | struct ocfs2_super *osb = NULL; |
| 980 | struct buffer_head *bh = NULL; |
| 981 | char nodestr[12]; |
| 982 | struct ocfs2_blockcheck_stats stats; |
| 983 | |
| 984 | trace_ocfs2_fill_super(sb, fc, fc->sb_flags & SB_SILENT); |
| 985 | |
| 986 | /* probe for superblock */ |
| 987 | status = ocfs2_sb_probe(sb, &bh, §or_size, &stats); |
| 988 | if (status < 0) { |
| 989 | mlog(ML_ERROR, "superblock probe failed!\n"); |
| 990 | goto out; |
| 991 | } |
| 992 | |
| 993 | status = ocfs2_initialize_super(sb, bh, sector_size, &stats); |
| 994 | brelse(bh); |
| 995 | bh = NULL; |
| 996 | if (status < 0) |
| 997 | goto out; |
| 998 | |
| 999 | osb = OCFS2_SB(sb); |
| 1000 | |
| 1001 | if (!ocfs2_check_set_options(sb, parsed_options)) { |
| 1002 | status = -EINVAL; |
| 1003 | goto out_super; |
| 1004 | } |
| 1005 | osb->s_mount_opt = parsed_options->mount_opt; |
| 1006 | osb->s_atime_quantum = parsed_options->atime_quantum; |
| 1007 | osb->preferred_slot = parsed_options->slot; |
| 1008 | osb->osb_commit_interval = parsed_options->commit_interval; |
| 1009 | |
| 1010 | ocfs2_la_set_sizes(osb, parsed_options->localalloc_opt); |
| 1011 | osb->osb_resv_level = parsed_options->resv_level; |
| 1012 | osb->osb_dir_resv_level = parsed_options->resv_level; |
| 1013 | if (parsed_options->dir_resv_level == -1) |
| 1014 | osb->osb_dir_resv_level = parsed_options->resv_level; |
| 1015 | else |
| 1016 | osb->osb_dir_resv_level = parsed_options->dir_resv_level; |
| 1017 | |
| 1018 | status = ocfs2_verify_userspace_stack(osb, parsed_options); |
| 1019 | if (status) |
| 1020 | goto out_super; |
| 1021 | |
| 1022 | sb->s_magic = OCFS2_SUPER_MAGIC; |
| 1023 | |
| 1024 | sb->s_flags = (sb->s_flags & ~(SB_POSIXACL | SB_NOSEC)) | |
| 1025 | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? SB_POSIXACL : 0); |
| 1026 | |
| 1027 | /* Hard readonly mode only if: bdev_read_only, SB_RDONLY, |
| 1028 | * heartbeat=none */ |
| 1029 | if (bdev_read_only(sb->s_bdev)) { |
| 1030 | if (!sb_rdonly(sb)) { |
| 1031 | status = -EACCES; |
| 1032 | mlog(ML_ERROR, "Readonly device detected but readonly " |
| 1033 | "mount was not specified.\n"); |
| 1034 | goto out_super; |
| 1035 | } |
| 1036 | |
| 1037 | /* You should not be able to start a local heartbeat |
| 1038 | * on a readonly device. */ |
| 1039 | if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { |
| 1040 | status = -EROFS; |
| 1041 | mlog(ML_ERROR, "Local heartbeat specified on readonly " |
| 1042 | "device.\n"); |
| 1043 | goto out_super; |
| 1044 | } |
| 1045 | |
| 1046 | status = ocfs2_check_journals_nolocks(osb); |
| 1047 | if (status < 0) { |
| 1048 | if (status == -EROFS) |
| 1049 | mlog(ML_ERROR, "Recovery required on readonly " |
| 1050 | "file system, but write access is " |
| 1051 | "unavailable.\n"); |
| 1052 | goto out_super; |
| 1053 | } |
| 1054 | |
| 1055 | ocfs2_set_ro_flag(osb, 1); |
| 1056 | |
| 1057 | printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. " |
| 1058 | "Cluster services will not be used for this mount. " |
| 1059 | "Recovery will be skipped.\n", osb->dev_str); |
| 1060 | } |
| 1061 | |
| 1062 | if (!ocfs2_is_hard_readonly(osb)) { |
| 1063 | if (sb_rdonly(sb)) |
| 1064 | ocfs2_set_ro_flag(osb, 0); |
| 1065 | } |
| 1066 | |
| 1067 | status = ocfs2_verify_heartbeat(osb); |
| 1068 | if (status < 0) |
| 1069 | goto out_super; |
| 1070 | |
| 1071 | osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, |
| 1072 | ocfs2_debugfs_root); |
| 1073 | |
| 1074 | debugfs_create_file("fs_state", S_IFREG|S_IRUSR, osb->osb_debug_root, |
| 1075 | osb, &ocfs2_osb_debug_fops); |
| 1076 | |
| 1077 | if (ocfs2_meta_ecc(osb)) { |
| 1078 | ocfs2_initialize_journal_triggers(sb, osb->s_journal_triggers); |
| 1079 | ocfs2_blockcheck_stats_debugfs_install( &osb->osb_ecc_stats, |
| 1080 | osb->osb_debug_root); |
| 1081 | } |
| 1082 | |
| 1083 | status = ocfs2_mount_volume(sb); |
| 1084 | if (status < 0) |
| 1085 | goto out_debugfs; |
| 1086 | |
| 1087 | if (osb->root_inode) |
| 1088 | inode = igrab(osb->root_inode); |
| 1089 | |
| 1090 | if (!inode) { |
| 1091 | status = -EIO; |
| 1092 | goto out_dismount; |
| 1093 | } |
| 1094 | |
| 1095 | osb->osb_dev_kset = kset_create_and_add(sb->s_id, NULL, |
| 1096 | &ocfs2_kset->kobj); |
| 1097 | if (!osb->osb_dev_kset) { |
| 1098 | status = -ENOMEM; |
| 1099 | mlog(ML_ERROR, "Unable to create device kset %s.\n", sb->s_id); |
| 1100 | goto out_dismount; |
| 1101 | } |
| 1102 | |
| 1103 | /* Create filecheck sysfs related directories/files at |
| 1104 | * /sys/fs/ocfs2/<devname>/filecheck */ |
| 1105 | if (ocfs2_filecheck_create_sysfs(osb)) { |
| 1106 | status = -ENOMEM; |
| 1107 | mlog(ML_ERROR, "Unable to create filecheck sysfs directory at " |
| 1108 | "/sys/fs/ocfs2/%s/filecheck.\n", sb->s_id); |
| 1109 | goto out_dismount; |
| 1110 | } |
| 1111 | |
| 1112 | root = d_make_root(inode); |
| 1113 | if (!root) { |
| 1114 | status = -ENOMEM; |
| 1115 | goto out_dismount; |
| 1116 | } |
| 1117 | |
| 1118 | sb->s_root = root; |
| 1119 | |
| 1120 | ocfs2_complete_mount_recovery(osb); |
| 1121 | |
| 1122 | if (ocfs2_mount_local(osb)) |
| 1123 | snprintf(nodestr, sizeof(nodestr), "local"); |
| 1124 | else |
| 1125 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
| 1126 | |
| 1127 | printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " |
| 1128 | "with %s data mode.\n", |
| 1129 | osb->dev_str, nodestr, osb->slot_num, |
| 1130 | osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : |
| 1131 | "ordered"); |
| 1132 | |
| 1133 | atomic_set(&osb->vol_state, VOLUME_MOUNTED); |
| 1134 | wake_up(&osb->osb_mount_event); |
| 1135 | |
| 1136 | /* Now we can initialize quotas because we can afford to wait |
| 1137 | * for cluster locks recovery now. That also means that truncation |
| 1138 | * log recovery can happen but that waits for proper quota setup */ |
| 1139 | if (!sb_rdonly(sb)) { |
| 1140 | status = ocfs2_enable_quotas(osb); |
| 1141 | if (status < 0) { |
| 1142 | /* We have to err-out specially here because |
| 1143 | * s_root is already set */ |
| 1144 | mlog_errno(status); |
| 1145 | atomic_set(&osb->vol_state, VOLUME_DISABLED); |
| 1146 | wake_up(&osb->osb_mount_event); |
| 1147 | return status; |
| 1148 | } |
| 1149 | } |
| 1150 | |
| 1151 | ocfs2_complete_quota_recovery(osb); |
| 1152 | |
| 1153 | /* Now we wake up again for processes waiting for quotas */ |
| 1154 | atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS); |
| 1155 | wake_up(&osb->osb_mount_event); |
| 1156 | |
| 1157 | /* Start this when the mount is almost sure of being successful */ |
| 1158 | ocfs2_orphan_scan_start(osb); |
| 1159 | |
| 1160 | return status; |
| 1161 | |
| 1162 | out_dismount: |
| 1163 | atomic_set(&osb->vol_state, VOLUME_DISABLED); |
| 1164 | wake_up(&osb->osb_mount_event); |
| 1165 | ocfs2_free_replay_slots(osb); |
| 1166 | ocfs2_dismount_volume(sb, 1); |
| 1167 | goto out; |
| 1168 | |
| 1169 | out_debugfs: |
| 1170 | debugfs_remove_recursive(osb->osb_debug_root); |
| 1171 | out_super: |
| 1172 | ocfs2_release_system_inodes(osb); |
| 1173 | kfree(osb->recovery_map); |
| 1174 | ocfs2_delete_osb(osb); |
| 1175 | kfree(osb); |
| 1176 | out: |
| 1177 | mlog_errno(status); |
| 1178 | |
| 1179 | return status; |
| 1180 | } |
| 1181 | |
| 1182 | static int ocfs2_get_tree(struct fs_context *fc) |
| 1183 | { |
| 1184 | return get_tree_bdev(fc, ocfs2_fill_super); |
| 1185 | } |
| 1186 | |
| 1187 | static void ocfs2_free_fc(struct fs_context *fc) |
| 1188 | { |
| 1189 | kfree(fc->fs_private); |
| 1190 | } |
| 1191 | |
| 1192 | static const struct fs_context_operations ocfs2_context_ops = { |
| 1193 | .parse_param = ocfs2_parse_param, |
| 1194 | .get_tree = ocfs2_get_tree, |
| 1195 | .reconfigure = ocfs2_reconfigure, |
| 1196 | .free = ocfs2_free_fc, |
| 1197 | }; |
| 1198 | |
| 1199 | static int ocfs2_init_fs_context(struct fs_context *fc) |
| 1200 | { |
| 1201 | struct mount_options *mopt; |
| 1202 | |
| 1203 | mopt = kzalloc(sizeof(struct mount_options), GFP_KERNEL); |
| 1204 | if (!mopt) |
| 1205 | return -EINVAL; |
| 1206 | |
| 1207 | mopt->commit_interval = 0; |
| 1208 | mopt->mount_opt = OCFS2_MOUNT_NOINTR; |
| 1209 | mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
| 1210 | mopt->slot = OCFS2_INVALID_SLOT; |
| 1211 | mopt->localalloc_opt = -1; |
| 1212 | mopt->cluster_stack[0] = '\0'; |
| 1213 | mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL; |
| 1214 | mopt->dir_resv_level = -1; |
| 1215 | |
| 1216 | fc->fs_private = mopt; |
| 1217 | fc->ops = &ocfs2_context_ops; |
| 1218 | |
| 1219 | return 0; |
| 1220 | } |
| 1221 | |
| 1222 | static struct file_system_type ocfs2_fs_type = { |
| 1223 | .owner = THIS_MODULE, |
| 1224 | .name = "ocfs2", |
| 1225 | .kill_sb = kill_block_super, |
| 1226 | .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, |
| 1227 | .next = NULL, |
| 1228 | .init_fs_context = ocfs2_init_fs_context, |
| 1229 | .parameters = ocfs2_param_spec, |
| 1230 | }; |
| 1231 | MODULE_ALIAS_FS("ocfs2"); |
| 1232 | |
| 1233 | static int ocfs2_check_set_options(struct super_block *sb, |
| 1234 | struct mount_options *options) |
| 1235 | { |
| 1236 | if (options->user_stack == 0) { |
| 1237 | u32 tmp; |
| 1238 | |
| 1239 | /* Ensure only one heartbeat mode */ |
| 1240 | tmp = options->mount_opt & (OCFS2_MOUNT_HB_LOCAL | |
| 1241 | OCFS2_MOUNT_HB_GLOBAL | |
| 1242 | OCFS2_MOUNT_HB_NONE); |
| 1243 | if (hweight32(tmp) != 1) { |
| 1244 | mlog(ML_ERROR, "Invalid heartbeat mount options\n"); |
| 1245 | return 0; |
| 1246 | } |
| 1247 | } |
| 1248 | if (options->mount_opt & OCFS2_MOUNT_USRQUOTA && |
| 1249 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, |
| 1250 | OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { |
| 1251 | mlog(ML_ERROR, "User quotas were requested, but this " |
| 1252 | "filesystem does not have the feature enabled.\n"); |
| 1253 | return 0; |
| 1254 | } |
| 1255 | if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA && |
| 1256 | !OCFS2_HAS_RO_COMPAT_FEATURE(sb, |
| 1257 | OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { |
| 1258 | mlog(ML_ERROR, "Group quotas were requested, but this " |
| 1259 | "filesystem does not have the feature enabled.\n"); |
| 1260 | return 0; |
| 1261 | } |
| 1262 | if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL && |
| 1263 | !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) { |
| 1264 | mlog(ML_ERROR, "ACL support requested but extended attributes " |
| 1265 | "feature is not enabled\n"); |
| 1266 | return 0; |
| 1267 | } |
| 1268 | /* No ACL setting specified? Use XATTR feature... */ |
| 1269 | if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL | |
| 1270 | OCFS2_MOUNT_NO_POSIX_ACL))) { |
| 1271 | if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) |
| 1272 | options->mount_opt |= OCFS2_MOUNT_POSIX_ACL; |
| 1273 | else |
| 1274 | options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; |
| 1275 | } |
| 1276 | return 1; |
| 1277 | } |
| 1278 | |
| 1279 | static int ocfs2_parse_param(struct fs_context *fc, struct fs_parameter *param) |
| 1280 | { |
| 1281 | struct fs_parse_result result; |
| 1282 | int opt; |
| 1283 | struct mount_options *mopt = fc->fs_private; |
| 1284 | bool is_remount = (fc->purpose & FS_CONTEXT_FOR_RECONFIGURE); |
| 1285 | |
| 1286 | trace_ocfs2_parse_options(is_remount, param->key); |
| 1287 | |
| 1288 | opt = fs_parse(fc, ocfs2_param_spec, param, &result); |
| 1289 | if (opt < 0) |
| 1290 | return opt; |
| 1291 | |
| 1292 | switch (opt) { |
| 1293 | case Opt_heartbeat: |
| 1294 | mopt->mount_opt |= result.uint_32; |
| 1295 | break; |
| 1296 | case Opt_barrier: |
| 1297 | if (result.uint_32) |
| 1298 | mopt->mount_opt |= OCFS2_MOUNT_BARRIER; |
| 1299 | else |
| 1300 | mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; |
| 1301 | break; |
| 1302 | case Opt_intr: |
| 1303 | if (result.negated) |
| 1304 | mopt->mount_opt |= OCFS2_MOUNT_NOINTR; |
| 1305 | else |
| 1306 | mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; |
| 1307 | break; |
| 1308 | case Opt_errors: |
| 1309 | mopt->mount_opt &= ~(OCFS2_MOUNT_ERRORS_CONT | |
| 1310 | OCFS2_MOUNT_ERRORS_ROFS | |
| 1311 | OCFS2_MOUNT_ERRORS_PANIC); |
| 1312 | mopt->mount_opt |= result.uint_32; |
| 1313 | break; |
| 1314 | case Opt_data: |
| 1315 | mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; |
| 1316 | mopt->mount_opt |= result.uint_32; |
| 1317 | break; |
| 1318 | case Opt_user_xattr: |
| 1319 | if (result.negated) |
| 1320 | mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; |
| 1321 | else |
| 1322 | mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; |
| 1323 | break; |
| 1324 | case Opt_atime_quantum: |
| 1325 | mopt->atime_quantum = result.uint_32; |
| 1326 | break; |
| 1327 | case Opt_slot: |
| 1328 | if (result.uint_32) |
| 1329 | mopt->slot = (u16)result.uint_32; |
| 1330 | break; |
| 1331 | case Opt_commit: |
| 1332 | if (result.uint_32 == 0) |
| 1333 | mopt->commit_interval = HZ * JBD2_DEFAULT_MAX_COMMIT_AGE; |
| 1334 | else |
| 1335 | mopt->commit_interval = HZ * result.uint_32; |
| 1336 | break; |
| 1337 | case Opt_localalloc: |
| 1338 | if (result.int_32 >= 0) |
| 1339 | mopt->localalloc_opt = result.int_32; |
| 1340 | break; |
| 1341 | case Opt_localflocks: |
| 1342 | /* |
| 1343 | * Changing this during remount could race flock() requests, or |
| 1344 | * "unbalance" existing ones (e.g., a lock is taken in one mode |
| 1345 | * but dropped in the other). If users care enough to flip |
| 1346 | * locking modes during remount, we could add a "local" flag to |
| 1347 | * individual flock structures for proper tracking of state. |
| 1348 | */ |
| 1349 | if (!is_remount) |
| 1350 | mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; |
| 1351 | break; |
| 1352 | case Opt_stack: |
| 1353 | /* Check both that the option we were passed is of the right |
| 1354 | * length and that it is a proper string of the right length. |
| 1355 | */ |
| 1356 | if (strlen(param->string) != OCFS2_STACK_LABEL_LEN) { |
| 1357 | mlog(ML_ERROR, "Invalid cluster_stack option\n"); |
| 1358 | return -EINVAL; |
| 1359 | } |
| 1360 | memcpy(mopt->cluster_stack, param->string, OCFS2_STACK_LABEL_LEN); |
| 1361 | mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; |
| 1362 | /* |
| 1363 | * Open code the memcmp here as we don't have an osb to pass |
| 1364 | * to ocfs2_userspace_stack(). |
| 1365 | */ |
| 1366 | if (memcmp(mopt->cluster_stack, |
| 1367 | OCFS2_CLASSIC_CLUSTER_STACK, |
| 1368 | OCFS2_STACK_LABEL_LEN)) |
| 1369 | mopt->user_stack = 1; |
| 1370 | break; |
| 1371 | case Opt_inode64: |
| 1372 | mopt->mount_opt |= OCFS2_MOUNT_INODE64; |
| 1373 | break; |
| 1374 | case Opt_usrquota: |
| 1375 | mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA; |
| 1376 | break; |
| 1377 | case Opt_grpquota: |
| 1378 | mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA; |
| 1379 | break; |
| 1380 | case Opt_coherency: |
| 1381 | mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED; |
| 1382 | mopt->mount_opt |= result.uint_32; |
| 1383 | break; |
| 1384 | case Opt_acl: |
| 1385 | if (result.negated) { |
| 1386 | mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; |
| 1387 | mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; |
| 1388 | } else { |
| 1389 | mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL; |
| 1390 | mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL; |
| 1391 | } |
| 1392 | break; |
| 1393 | case Opt_resv_level: |
| 1394 | if (is_remount) |
| 1395 | break; |
| 1396 | if (result.uint_32 >= OCFS2_MIN_RESV_LEVEL && |
| 1397 | result.uint_32 < OCFS2_MAX_RESV_LEVEL) |
| 1398 | mopt->resv_level = result.uint_32; |
| 1399 | break; |
| 1400 | case Opt_dir_resv_level: |
| 1401 | if (is_remount) |
| 1402 | break; |
| 1403 | if (result.uint_32 >= OCFS2_MIN_RESV_LEVEL && |
| 1404 | result.uint_32 < OCFS2_MAX_RESV_LEVEL) |
| 1405 | mopt->dir_resv_level = result.uint_32; |
| 1406 | break; |
| 1407 | case Opt_journal_async_commit: |
| 1408 | mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT; |
| 1409 | break; |
| 1410 | default: |
| 1411 | return -EINVAL; |
| 1412 | } |
| 1413 | |
| 1414 | return 0; |
| 1415 | } |
| 1416 | |
| 1417 | static int ocfs2_show_options(struct seq_file *s, struct dentry *root) |
| 1418 | { |
| 1419 | struct ocfs2_super *osb = OCFS2_SB(root->d_sb); |
| 1420 | unsigned long opts = osb->s_mount_opt; |
| 1421 | unsigned int local_alloc_megs; |
| 1422 | |
| 1423 | if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) { |
| 1424 | seq_printf(s, ",_netdev"); |
| 1425 | if (opts & OCFS2_MOUNT_HB_LOCAL) |
| 1426 | seq_printf(s, ",%s", OCFS2_HB_LOCAL); |
| 1427 | else |
| 1428 | seq_printf(s, ",%s", OCFS2_HB_GLOBAL); |
| 1429 | } else |
| 1430 | seq_printf(s, ",%s", OCFS2_HB_NONE); |
| 1431 | |
| 1432 | if (opts & OCFS2_MOUNT_NOINTR) |
| 1433 | seq_printf(s, ",nointr"); |
| 1434 | |
| 1435 | if (opts & OCFS2_MOUNT_DATA_WRITEBACK) |
| 1436 | seq_printf(s, ",data=writeback"); |
| 1437 | else |
| 1438 | seq_printf(s, ",data=ordered"); |
| 1439 | |
| 1440 | if (opts & OCFS2_MOUNT_BARRIER) |
| 1441 | seq_printf(s, ",barrier=1"); |
| 1442 | |
| 1443 | if (opts & OCFS2_MOUNT_ERRORS_PANIC) |
| 1444 | seq_printf(s, ",errors=panic"); |
| 1445 | else if (opts & OCFS2_MOUNT_ERRORS_CONT) |
| 1446 | seq_printf(s, ",errors=continue"); |
| 1447 | else |
| 1448 | seq_printf(s, ",errors=remount-ro"); |
| 1449 | |
| 1450 | if (osb->preferred_slot != OCFS2_INVALID_SLOT) |
| 1451 | seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); |
| 1452 | |
| 1453 | seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); |
| 1454 | |
| 1455 | if (osb->osb_commit_interval) |
| 1456 | seq_printf(s, ",commit=%u", |
| 1457 | (unsigned) (osb->osb_commit_interval / HZ)); |
| 1458 | |
| 1459 | local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); |
| 1460 | if (local_alloc_megs != ocfs2_la_default_mb(osb)) |
| 1461 | seq_printf(s, ",localalloc=%d", local_alloc_megs); |
| 1462 | |
| 1463 | if (opts & OCFS2_MOUNT_LOCALFLOCKS) |
| 1464 | seq_printf(s, ",localflocks,"); |
| 1465 | |
| 1466 | if (osb->osb_cluster_stack[0]) |
| 1467 | seq_show_option(s, "cluster_stack", osb->osb_cluster_stack); |
| 1468 | if (opts & OCFS2_MOUNT_USRQUOTA) |
| 1469 | seq_printf(s, ",usrquota"); |
| 1470 | if (opts & OCFS2_MOUNT_GRPQUOTA) |
| 1471 | seq_printf(s, ",grpquota"); |
| 1472 | |
| 1473 | if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED) |
| 1474 | seq_printf(s, ",coherency=buffered"); |
| 1475 | else |
| 1476 | seq_printf(s, ",coherency=full"); |
| 1477 | |
| 1478 | if (opts & OCFS2_MOUNT_NOUSERXATTR) |
| 1479 | seq_printf(s, ",nouser_xattr"); |
| 1480 | else |
| 1481 | seq_printf(s, ",user_xattr"); |
| 1482 | |
| 1483 | if (opts & OCFS2_MOUNT_INODE64) |
| 1484 | seq_printf(s, ",inode64"); |
| 1485 | |
| 1486 | if (opts & OCFS2_MOUNT_POSIX_ACL) |
| 1487 | seq_printf(s, ",acl"); |
| 1488 | else |
| 1489 | seq_printf(s, ",noacl"); |
| 1490 | |
| 1491 | if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL) |
| 1492 | seq_printf(s, ",resv_level=%d", osb->osb_resv_level); |
| 1493 | |
| 1494 | if (osb->osb_dir_resv_level != osb->osb_resv_level) |
| 1495 | seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level); |
| 1496 | |
| 1497 | if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT) |
| 1498 | seq_printf(s, ",journal_async_commit"); |
| 1499 | |
| 1500 | return 0; |
| 1501 | } |
| 1502 | |
| 1503 | static int __init ocfs2_init(void) |
| 1504 | { |
| 1505 | int status; |
| 1506 | |
| 1507 | status = init_ocfs2_uptodate_cache(); |
| 1508 | if (status < 0) |
| 1509 | goto out1; |
| 1510 | |
| 1511 | status = ocfs2_initialize_mem_caches(); |
| 1512 | if (status < 0) |
| 1513 | goto out2; |
| 1514 | |
| 1515 | ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); |
| 1516 | |
| 1517 | ocfs2_set_locking_protocol(); |
| 1518 | |
| 1519 | register_quota_format(&ocfs2_quota_format); |
| 1520 | |
| 1521 | status = register_filesystem(&ocfs2_fs_type); |
| 1522 | if (!status) |
| 1523 | return 0; |
| 1524 | |
| 1525 | unregister_quota_format(&ocfs2_quota_format); |
| 1526 | debugfs_remove(ocfs2_debugfs_root); |
| 1527 | ocfs2_free_mem_caches(); |
| 1528 | out2: |
| 1529 | exit_ocfs2_uptodate_cache(); |
| 1530 | out1: |
| 1531 | mlog_errno(status); |
| 1532 | return status; |
| 1533 | } |
| 1534 | |
| 1535 | static void __exit ocfs2_exit(void) |
| 1536 | { |
| 1537 | unregister_quota_format(&ocfs2_quota_format); |
| 1538 | |
| 1539 | debugfs_remove(ocfs2_debugfs_root); |
| 1540 | |
| 1541 | ocfs2_free_mem_caches(); |
| 1542 | |
| 1543 | unregister_filesystem(&ocfs2_fs_type); |
| 1544 | |
| 1545 | exit_ocfs2_uptodate_cache(); |
| 1546 | } |
| 1547 | |
| 1548 | static void ocfs2_put_super(struct super_block *sb) |
| 1549 | { |
| 1550 | trace_ocfs2_put_super(sb); |
| 1551 | |
| 1552 | ocfs2_sync_blockdev(sb); |
| 1553 | ocfs2_dismount_volume(sb, 0); |
| 1554 | } |
| 1555 | |
| 1556 | static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) |
| 1557 | { |
| 1558 | struct ocfs2_super *osb; |
| 1559 | u32 numbits, freebits; |
| 1560 | int status; |
| 1561 | struct ocfs2_dinode *bm_lock; |
| 1562 | struct buffer_head *bh = NULL; |
| 1563 | struct inode *inode = NULL; |
| 1564 | |
| 1565 | trace_ocfs2_statfs(dentry->d_sb, buf); |
| 1566 | |
| 1567 | osb = OCFS2_SB(dentry->d_sb); |
| 1568 | |
| 1569 | inode = ocfs2_get_system_file_inode(osb, |
| 1570 | GLOBAL_BITMAP_SYSTEM_INODE, |
| 1571 | OCFS2_INVALID_SLOT); |
| 1572 | if (!inode) { |
| 1573 | mlog(ML_ERROR, "failed to get bitmap inode\n"); |
| 1574 | status = -EIO; |
| 1575 | goto bail; |
| 1576 | } |
| 1577 | |
| 1578 | status = ocfs2_inode_lock(inode, &bh, 0); |
| 1579 | if (status < 0) { |
| 1580 | mlog_errno(status); |
| 1581 | goto bail; |
| 1582 | } |
| 1583 | |
| 1584 | bm_lock = (struct ocfs2_dinode *) bh->b_data; |
| 1585 | |
| 1586 | numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); |
| 1587 | freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); |
| 1588 | |
| 1589 | buf->f_type = OCFS2_SUPER_MAGIC; |
| 1590 | buf->f_bsize = dentry->d_sb->s_blocksize; |
| 1591 | buf->f_namelen = OCFS2_MAX_FILENAME_LEN; |
| 1592 | buf->f_blocks = ((sector_t) numbits) * |
| 1593 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); |
| 1594 | buf->f_bfree = ((sector_t) freebits) * |
| 1595 | (osb->s_clustersize >> osb->sb->s_blocksize_bits); |
| 1596 | buf->f_bavail = buf->f_bfree; |
| 1597 | buf->f_files = numbits; |
| 1598 | buf->f_ffree = freebits; |
| 1599 | buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN) |
| 1600 | & 0xFFFFFFFFUL; |
| 1601 | buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN, |
| 1602 | OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL; |
| 1603 | |
| 1604 | brelse(bh); |
| 1605 | |
| 1606 | ocfs2_inode_unlock(inode, 0); |
| 1607 | status = 0; |
| 1608 | bail: |
| 1609 | iput(inode); |
| 1610 | |
| 1611 | if (status) |
| 1612 | mlog_errno(status); |
| 1613 | |
| 1614 | return status; |
| 1615 | } |
| 1616 | |
| 1617 | static void ocfs2_inode_init_once(void *data) |
| 1618 | { |
| 1619 | struct ocfs2_inode_info *oi = data; |
| 1620 | |
| 1621 | oi->ip_flags = 0; |
| 1622 | oi->ip_open_count = 0; |
| 1623 | spin_lock_init(&oi->ip_lock); |
| 1624 | ocfs2_extent_map_init(&oi->vfs_inode); |
| 1625 | INIT_LIST_HEAD(&oi->ip_io_markers); |
| 1626 | INIT_LIST_HEAD(&oi->ip_unwritten_list); |
| 1627 | oi->ip_dir_start_lookup = 0; |
| 1628 | init_rwsem(&oi->ip_alloc_sem); |
| 1629 | init_rwsem(&oi->ip_xattr_sem); |
| 1630 | mutex_init(&oi->ip_io_mutex); |
| 1631 | |
| 1632 | oi->ip_blkno = 0ULL; |
| 1633 | oi->ip_clusters = 0; |
| 1634 | oi->ip_next_orphan = NULL; |
| 1635 | |
| 1636 | ocfs2_resv_init_once(&oi->ip_la_data_resv); |
| 1637 | |
| 1638 | ocfs2_lock_res_init_once(&oi->ip_rw_lockres); |
| 1639 | ocfs2_lock_res_init_once(&oi->ip_inode_lockres); |
| 1640 | ocfs2_lock_res_init_once(&oi->ip_open_lockres); |
| 1641 | |
| 1642 | ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode), |
| 1643 | &ocfs2_inode_caching_ops); |
| 1644 | |
| 1645 | inode_init_once(&oi->vfs_inode); |
| 1646 | } |
| 1647 | |
| 1648 | static int ocfs2_initialize_mem_caches(void) |
| 1649 | { |
| 1650 | ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", |
| 1651 | sizeof(struct ocfs2_inode_info), |
| 1652 | 0, |
| 1653 | (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| |
| 1654 | SLAB_ACCOUNT), |
| 1655 | ocfs2_inode_init_once); |
| 1656 | ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", |
| 1657 | sizeof(struct ocfs2_dquot), |
| 1658 | 0, |
| 1659 | SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT, |
| 1660 | NULL); |
| 1661 | ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", |
| 1662 | sizeof(struct ocfs2_quota_chunk), |
| 1663 | 0, |
| 1664 | SLAB_RECLAIM_ACCOUNT, |
| 1665 | NULL); |
| 1666 | if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || |
| 1667 | !ocfs2_qf_chunk_cachep) { |
| 1668 | kmem_cache_destroy(ocfs2_inode_cachep); |
| 1669 | kmem_cache_destroy(ocfs2_dquot_cachep); |
| 1670 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); |
| 1671 | return -ENOMEM; |
| 1672 | } |
| 1673 | |
| 1674 | return 0; |
| 1675 | } |
| 1676 | |
| 1677 | static void ocfs2_free_mem_caches(void) |
| 1678 | { |
| 1679 | /* |
| 1680 | * Make sure all delayed rcu free inodes are flushed before we |
| 1681 | * destroy cache. |
| 1682 | */ |
| 1683 | rcu_barrier(); |
| 1684 | kmem_cache_destroy(ocfs2_inode_cachep); |
| 1685 | ocfs2_inode_cachep = NULL; |
| 1686 | |
| 1687 | kmem_cache_destroy(ocfs2_dquot_cachep); |
| 1688 | ocfs2_dquot_cachep = NULL; |
| 1689 | |
| 1690 | kmem_cache_destroy(ocfs2_qf_chunk_cachep); |
| 1691 | ocfs2_qf_chunk_cachep = NULL; |
| 1692 | } |
| 1693 | |
| 1694 | static int ocfs2_get_sector(struct super_block *sb, |
| 1695 | struct buffer_head **bh, |
| 1696 | int block, |
| 1697 | int sect_size) |
| 1698 | { |
| 1699 | if (!sb_set_blocksize(sb, sect_size)) { |
| 1700 | mlog(ML_ERROR, "unable to set blocksize\n"); |
| 1701 | return -EIO; |
| 1702 | } |
| 1703 | |
| 1704 | *bh = sb_getblk(sb, block); |
| 1705 | if (!*bh) { |
| 1706 | mlog_errno(-ENOMEM); |
| 1707 | return -ENOMEM; |
| 1708 | } |
| 1709 | lock_buffer(*bh); |
| 1710 | if (!buffer_dirty(*bh)) |
| 1711 | clear_buffer_uptodate(*bh); |
| 1712 | unlock_buffer(*bh); |
| 1713 | if (bh_read(*bh, 0) < 0) { |
| 1714 | mlog_errno(-EIO); |
| 1715 | brelse(*bh); |
| 1716 | *bh = NULL; |
| 1717 | return -EIO; |
| 1718 | } |
| 1719 | |
| 1720 | return 0; |
| 1721 | } |
| 1722 | |
| 1723 | static int ocfs2_mount_volume(struct super_block *sb) |
| 1724 | { |
| 1725 | int status = 0; |
| 1726 | struct ocfs2_super *osb = OCFS2_SB(sb); |
| 1727 | |
| 1728 | if (ocfs2_is_hard_readonly(osb)) |
| 1729 | goto out; |
| 1730 | |
| 1731 | mutex_init(&osb->obs_trim_fs_mutex); |
| 1732 | |
| 1733 | status = ocfs2_dlm_init(osb); |
| 1734 | if (status < 0) { |
| 1735 | mlog_errno(status); |
| 1736 | if (status == -EBADR && ocfs2_userspace_stack(osb)) |
| 1737 | mlog(ML_ERROR, "couldn't mount because cluster name on" |
| 1738 | " disk does not match the running cluster name.\n"); |
| 1739 | goto out; |
| 1740 | } |
| 1741 | |
| 1742 | status = ocfs2_super_lock(osb, 1); |
| 1743 | if (status < 0) { |
| 1744 | mlog_errno(status); |
| 1745 | goto out_dlm; |
| 1746 | } |
| 1747 | |
| 1748 | /* This will load up the node map and add ourselves to it. */ |
| 1749 | status = ocfs2_find_slot(osb); |
| 1750 | if (status < 0) { |
| 1751 | mlog_errno(status); |
| 1752 | goto out_super_lock; |
| 1753 | } |
| 1754 | |
| 1755 | /* load all node-local system inodes */ |
| 1756 | status = ocfs2_init_local_system_inodes(osb); |
| 1757 | if (status < 0) { |
| 1758 | mlog_errno(status); |
| 1759 | goto out_super_lock; |
| 1760 | } |
| 1761 | |
| 1762 | status = ocfs2_check_volume(osb); |
| 1763 | if (status < 0) { |
| 1764 | mlog_errno(status); |
| 1765 | goto out_system_inodes; |
| 1766 | } |
| 1767 | |
| 1768 | status = ocfs2_truncate_log_init(osb); |
| 1769 | if (status < 0) { |
| 1770 | mlog_errno(status); |
| 1771 | goto out_check_volume; |
| 1772 | } |
| 1773 | |
| 1774 | ocfs2_super_unlock(osb, 1); |
| 1775 | return 0; |
| 1776 | |
| 1777 | out_check_volume: |
| 1778 | ocfs2_free_replay_slots(osb); |
| 1779 | out_system_inodes: |
| 1780 | if (osb->local_alloc_state == OCFS2_LA_ENABLED) |
| 1781 | ocfs2_shutdown_local_alloc(osb); |
| 1782 | ocfs2_release_system_inodes(osb); |
| 1783 | /* before journal shutdown, we should release slot_info */ |
| 1784 | ocfs2_free_slot_info(osb); |
| 1785 | ocfs2_journal_shutdown(osb); |
| 1786 | out_super_lock: |
| 1787 | ocfs2_super_unlock(osb, 1); |
| 1788 | out_dlm: |
| 1789 | ocfs2_dlm_shutdown(osb, 0); |
| 1790 | out: |
| 1791 | return status; |
| 1792 | } |
| 1793 | |
| 1794 | static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) |
| 1795 | { |
| 1796 | int tmp, hangup_needed = 0; |
| 1797 | struct ocfs2_super *osb = NULL; |
| 1798 | char nodestr[12]; |
| 1799 | |
| 1800 | trace_ocfs2_dismount_volume(sb); |
| 1801 | |
| 1802 | BUG_ON(!sb); |
| 1803 | osb = OCFS2_SB(sb); |
| 1804 | BUG_ON(!osb); |
| 1805 | |
| 1806 | /* Remove file check sysfs related directories/files, |
| 1807 | * and wait for the pending file check operations */ |
| 1808 | ocfs2_filecheck_remove_sysfs(osb); |
| 1809 | |
| 1810 | kset_unregister(osb->osb_dev_kset); |
| 1811 | |
| 1812 | /* Orphan scan should be stopped as early as possible */ |
| 1813 | ocfs2_orphan_scan_stop(osb); |
| 1814 | |
| 1815 | /* Stop quota recovery so that we can disable quotas */ |
| 1816 | ocfs2_recovery_disable_quota(osb); |
| 1817 | |
| 1818 | ocfs2_disable_quotas(osb); |
| 1819 | |
| 1820 | /* All dquots should be freed by now */ |
| 1821 | WARN_ON(!llist_empty(&osb->dquot_drop_list)); |
| 1822 | /* Wait for worker to be done with the work structure in osb */ |
| 1823 | cancel_work_sync(&osb->dquot_drop_work); |
| 1824 | |
| 1825 | ocfs2_shutdown_local_alloc(osb); |
| 1826 | |
| 1827 | ocfs2_truncate_log_shutdown(osb); |
| 1828 | |
| 1829 | /* This will disable recovery and flush any recovery work. */ |
| 1830 | ocfs2_recovery_exit(osb); |
| 1831 | |
| 1832 | ocfs2_sync_blockdev(sb); |
| 1833 | |
| 1834 | ocfs2_purge_refcount_trees(osb); |
| 1835 | |
| 1836 | /* No cluster connection means we've failed during mount, so skip |
| 1837 | * all the steps which depended on that to complete. */ |
| 1838 | if (osb->cconn) { |
| 1839 | tmp = ocfs2_super_lock(osb, 1); |
| 1840 | if (tmp < 0) { |
| 1841 | mlog_errno(tmp); |
| 1842 | return; |
| 1843 | } |
| 1844 | } |
| 1845 | |
| 1846 | if (osb->slot_num != OCFS2_INVALID_SLOT) |
| 1847 | ocfs2_put_slot(osb); |
| 1848 | |
| 1849 | if (osb->cconn) |
| 1850 | ocfs2_super_unlock(osb, 1); |
| 1851 | |
| 1852 | ocfs2_release_system_inodes(osb); |
| 1853 | |
| 1854 | ocfs2_journal_shutdown(osb); |
| 1855 | |
| 1856 | /* |
| 1857 | * If we're dismounting due to mount error, mount.ocfs2 will clean |
| 1858 | * up heartbeat. If we're a local mount, there is no heartbeat. |
| 1859 | * If we failed before we got a uuid_str yet, we can't stop |
| 1860 | * heartbeat. Otherwise, do it. |
| 1861 | */ |
| 1862 | if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str && |
| 1863 | !ocfs2_is_hard_readonly(osb)) |
| 1864 | hangup_needed = 1; |
| 1865 | |
| 1866 | ocfs2_dlm_shutdown(osb, hangup_needed); |
| 1867 | |
| 1868 | ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats); |
| 1869 | debugfs_remove_recursive(osb->osb_debug_root); |
| 1870 | |
| 1871 | if (hangup_needed) |
| 1872 | ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); |
| 1873 | |
| 1874 | atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); |
| 1875 | |
| 1876 | if (ocfs2_mount_local(osb)) |
| 1877 | snprintf(nodestr, sizeof(nodestr), "local"); |
| 1878 | else |
| 1879 | snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); |
| 1880 | |
| 1881 | printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", |
| 1882 | osb->dev_str, nodestr); |
| 1883 | |
| 1884 | ocfs2_delete_osb(osb); |
| 1885 | kfree(osb); |
| 1886 | sb->s_dev = 0; |
| 1887 | sb->s_fs_info = NULL; |
| 1888 | } |
| 1889 | |
| 1890 | static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, |
| 1891 | unsigned uuid_bytes) |
| 1892 | { |
| 1893 | int i, ret; |
| 1894 | char *ptr; |
| 1895 | |
| 1896 | BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); |
| 1897 | |
| 1898 | osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); |
| 1899 | if (osb->uuid_str == NULL) |
| 1900 | return -ENOMEM; |
| 1901 | |
| 1902 | for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { |
| 1903 | /* print with null */ |
| 1904 | ret = snprintf(ptr, 3, "%02X", uuid[i]); |
| 1905 | if (ret != 2) /* drop super cleans up */ |
| 1906 | return -EINVAL; |
| 1907 | /* then only advance past the last char */ |
| 1908 | ptr += 2; |
| 1909 | } |
| 1910 | |
| 1911 | return 0; |
| 1912 | } |
| 1913 | |
| 1914 | /* Make sure entire volume is addressable by our journal. Requires |
| 1915 | osb_clusters_at_boot to be valid and for the journal to have been |
| 1916 | initialized by ocfs2_journal_init(). */ |
| 1917 | static int ocfs2_journal_addressable(struct ocfs2_super *osb) |
| 1918 | { |
| 1919 | int status = 0; |
| 1920 | u64 max_block = |
| 1921 | ocfs2_clusters_to_blocks(osb->sb, |
| 1922 | osb->osb_clusters_at_boot) - 1; |
| 1923 | |
| 1924 | /* 32-bit block number is always OK. */ |
| 1925 | if (max_block <= (u32)~0ULL) |
| 1926 | goto out; |
| 1927 | |
| 1928 | /* Volume is "huge", so see if our journal is new enough to |
| 1929 | support it. */ |
| 1930 | if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb, |
| 1931 | OCFS2_FEATURE_COMPAT_JBD2_SB) && |
| 1932 | jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0, |
| 1933 | JBD2_FEATURE_INCOMPAT_64BIT))) { |
| 1934 | mlog(ML_ERROR, "The journal cannot address the entire volume. " |
| 1935 | "Enable the 'block64' journal option with tunefs.ocfs2"); |
| 1936 | status = -EFBIG; |
| 1937 | goto out; |
| 1938 | } |
| 1939 | |
| 1940 | out: |
| 1941 | return status; |
| 1942 | } |
| 1943 | |
| 1944 | static int ocfs2_initialize_super(struct super_block *sb, |
| 1945 | struct buffer_head *bh, |
| 1946 | int sector_size, |
| 1947 | struct ocfs2_blockcheck_stats *stats) |
| 1948 | { |
| 1949 | int status; |
| 1950 | int i, cbits, bbits; |
| 1951 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; |
| 1952 | struct inode *inode = NULL; |
| 1953 | struct ocfs2_super *osb; |
| 1954 | u64 total_blocks; |
| 1955 | |
| 1956 | osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
| 1957 | if (!osb) { |
| 1958 | status = -ENOMEM; |
| 1959 | mlog_errno(status); |
| 1960 | goto out; |
| 1961 | } |
| 1962 | |
| 1963 | sb->s_fs_info = osb; |
| 1964 | sb->s_op = &ocfs2_sops; |
| 1965 | sb->s_d_op = &ocfs2_dentry_ops; |
| 1966 | sb->s_export_op = &ocfs2_export_ops; |
| 1967 | sb->s_qcop = &dquot_quotactl_sysfile_ops; |
| 1968 | sb->dq_op = &ocfs2_quota_operations; |
| 1969 | sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; |
| 1970 | sb->s_xattr = ocfs2_xattr_handlers; |
| 1971 | sb->s_time_gran = 1; |
| 1972 | sb->s_flags |= SB_NOATIME; |
| 1973 | /* this is needed to support O_LARGEFILE */ |
| 1974 | cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
| 1975 | bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); |
| 1976 | sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); |
| 1977 | super_set_uuid(sb, di->id2.i_super.s_uuid, |
| 1978 | sizeof(di->id2.i_super.s_uuid)); |
| 1979 | |
| 1980 | osb->osb_dx_mask = (1 << (cbits - bbits)) - 1; |
| 1981 | |
| 1982 | for (i = 0; i < 3; i++) |
| 1983 | osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]); |
| 1984 | osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash); |
| 1985 | |
| 1986 | osb->sb = sb; |
| 1987 | osb->s_sectsize_bits = blksize_bits(sector_size); |
| 1988 | BUG_ON(!osb->s_sectsize_bits); |
| 1989 | |
| 1990 | spin_lock_init(&osb->dc_task_lock); |
| 1991 | init_waitqueue_head(&osb->dc_event); |
| 1992 | osb->dc_work_sequence = 0; |
| 1993 | osb->dc_wake_sequence = 0; |
| 1994 | INIT_LIST_HEAD(&osb->blocked_lock_list); |
| 1995 | osb->blocked_lock_count = 0; |
| 1996 | spin_lock_init(&osb->osb_lock); |
| 1997 | spin_lock_init(&osb->osb_xattr_lock); |
| 1998 | ocfs2_init_steal_slots(osb); |
| 1999 | |
| 2000 | mutex_init(&osb->system_file_mutex); |
| 2001 | |
| 2002 | atomic_set(&osb->alloc_stats.moves, 0); |
| 2003 | atomic_set(&osb->alloc_stats.local_data, 0); |
| 2004 | atomic_set(&osb->alloc_stats.bitmap_data, 0); |
| 2005 | atomic_set(&osb->alloc_stats.bg_allocs, 0); |
| 2006 | atomic_set(&osb->alloc_stats.bg_extends, 0); |
| 2007 | |
| 2008 | /* Copy the blockcheck stats from the superblock probe */ |
| 2009 | osb->osb_ecc_stats = *stats; |
| 2010 | |
| 2011 | ocfs2_init_node_maps(osb); |
| 2012 | |
| 2013 | snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", |
| 2014 | MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); |
| 2015 | |
| 2016 | osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); |
| 2017 | if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { |
| 2018 | mlog(ML_ERROR, "Invalid number of node slots (%u)\n", |
| 2019 | osb->max_slots); |
| 2020 | status = -EINVAL; |
| 2021 | goto out; |
| 2022 | } |
| 2023 | |
| 2024 | ocfs2_orphan_scan_init(osb); |
| 2025 | |
| 2026 | status = ocfs2_recovery_init(osb); |
| 2027 | if (status) { |
| 2028 | mlog(ML_ERROR, "Unable to initialize recovery state\n"); |
| 2029 | mlog_errno(status); |
| 2030 | goto out; |
| 2031 | } |
| 2032 | |
| 2033 | init_waitqueue_head(&osb->checkpoint_event); |
| 2034 | |
| 2035 | osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; |
| 2036 | |
| 2037 | osb->slot_num = OCFS2_INVALID_SLOT; |
| 2038 | |
| 2039 | osb->s_xattr_inline_size = le16_to_cpu( |
| 2040 | di->id2.i_super.s_xattr_inline_size); |
| 2041 | |
| 2042 | osb->local_alloc_state = OCFS2_LA_UNUSED; |
| 2043 | osb->local_alloc_bh = NULL; |
| 2044 | INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); |
| 2045 | |
| 2046 | init_waitqueue_head(&osb->osb_mount_event); |
| 2047 | |
| 2048 | ocfs2_resmap_init(osb, &osb->osb_la_resmap); |
| 2049 | |
| 2050 | osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); |
| 2051 | if (!osb->vol_label) { |
| 2052 | mlog(ML_ERROR, "unable to alloc vol label\n"); |
| 2053 | status = -ENOMEM; |
| 2054 | goto out_recovery_map; |
| 2055 | } |
| 2056 | |
| 2057 | osb->slot_recovery_generations = |
| 2058 | kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), |
| 2059 | GFP_KERNEL); |
| 2060 | if (!osb->slot_recovery_generations) { |
| 2061 | status = -ENOMEM; |
| 2062 | mlog_errno(status); |
| 2063 | goto out_vol_label; |
| 2064 | } |
| 2065 | |
| 2066 | init_waitqueue_head(&osb->osb_wipe_event); |
| 2067 | osb->osb_orphan_wipes = kcalloc(osb->max_slots, |
| 2068 | sizeof(*osb->osb_orphan_wipes), |
| 2069 | GFP_KERNEL); |
| 2070 | if (!osb->osb_orphan_wipes) { |
| 2071 | status = -ENOMEM; |
| 2072 | mlog_errno(status); |
| 2073 | goto out_slot_recovery_gen; |
| 2074 | } |
| 2075 | |
| 2076 | osb->osb_rf_lock_tree = RB_ROOT; |
| 2077 | |
| 2078 | osb->s_feature_compat = |
| 2079 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); |
| 2080 | osb->s_feature_ro_compat = |
| 2081 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); |
| 2082 | osb->s_feature_incompat = |
| 2083 | le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); |
| 2084 | |
| 2085 | if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { |
| 2086 | mlog(ML_ERROR, "couldn't mount because of unsupported " |
| 2087 | "optional features (%x).\n", i); |
| 2088 | status = -EINVAL; |
| 2089 | goto out_orphan_wipes; |
| 2090 | } |
| 2091 | if (!sb_rdonly(osb->sb) && (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { |
| 2092 | mlog(ML_ERROR, "couldn't mount RDWR because of " |
| 2093 | "unsupported optional features (%x).\n", i); |
| 2094 | status = -EINVAL; |
| 2095 | goto out_orphan_wipes; |
| 2096 | } |
| 2097 | |
| 2098 | if (ocfs2_clusterinfo_valid(osb)) { |
| 2099 | /* |
| 2100 | * ci_stack and ci_cluster in ocfs2_cluster_info may not be null |
| 2101 | * terminated, so make sure no overflow happens here by using |
| 2102 | * memcpy. Destination strings will always be null terminated |
| 2103 | * because osb is allocated using kzalloc. |
| 2104 | */ |
| 2105 | osb->osb_stackflags = |
| 2106 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags; |
| 2107 | memcpy(osb->osb_cluster_stack, |
| 2108 | OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, |
| 2109 | OCFS2_STACK_LABEL_LEN); |
| 2110 | if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { |
| 2111 | mlog(ML_ERROR, |
| 2112 | "couldn't mount because of an invalid " |
| 2113 | "cluster stack label (%s) \n", |
| 2114 | osb->osb_cluster_stack); |
| 2115 | status = -EINVAL; |
| 2116 | goto out_orphan_wipes; |
| 2117 | } |
| 2118 | memcpy(osb->osb_cluster_name, |
| 2119 | OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster, |
| 2120 | OCFS2_CLUSTER_NAME_LEN); |
| 2121 | } else { |
| 2122 | /* The empty string is identical with classic tools that |
| 2123 | * don't know about s_cluster_info. */ |
| 2124 | osb->osb_cluster_stack[0] = '\0'; |
| 2125 | } |
| 2126 | |
| 2127 | get_random_bytes(&osb->s_next_generation, sizeof(u32)); |
| 2128 | |
| 2129 | /* |
| 2130 | * FIXME |
| 2131 | * This should be done in ocfs2_journal_init(), but any inode |
| 2132 | * writes back operation will cause the filesystem to crash. |
| 2133 | */ |
| 2134 | status = ocfs2_journal_alloc(osb); |
| 2135 | if (status < 0) |
| 2136 | goto out_orphan_wipes; |
| 2137 | |
| 2138 | INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs); |
| 2139 | init_llist_head(&osb->dquot_drop_list); |
| 2140 | |
| 2141 | /* get some pseudo constants for clustersize bits */ |
| 2142 | osb->s_clustersize_bits = |
| 2143 | le32_to_cpu(di->id2.i_super.s_clustersize_bits); |
| 2144 | osb->s_clustersize = 1 << osb->s_clustersize_bits; |
| 2145 | |
| 2146 | if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || |
| 2147 | osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { |
| 2148 | mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", |
| 2149 | osb->s_clustersize); |
| 2150 | status = -EINVAL; |
| 2151 | goto out_journal; |
| 2152 | } |
| 2153 | |
| 2154 | total_blocks = ocfs2_clusters_to_blocks(osb->sb, |
| 2155 | le32_to_cpu(di->i_clusters)); |
| 2156 | |
| 2157 | status = generic_check_addressable(osb->sb->s_blocksize_bits, |
| 2158 | total_blocks); |
| 2159 | if (status) { |
| 2160 | mlog(ML_ERROR, "Volume too large " |
| 2161 | "to mount safely on this system"); |
| 2162 | status = -EFBIG; |
| 2163 | goto out_journal; |
| 2164 | } |
| 2165 | |
| 2166 | if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, |
| 2167 | sizeof(di->id2.i_super.s_uuid))) { |
| 2168 | mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); |
| 2169 | status = -ENOMEM; |
| 2170 | goto out_journal; |
| 2171 | } |
| 2172 | |
| 2173 | strscpy(osb->vol_label, di->id2.i_super.s_label, |
| 2174 | OCFS2_MAX_VOL_LABEL_LEN); |
| 2175 | osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); |
| 2176 | osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); |
| 2177 | osb->first_cluster_group_blkno = |
| 2178 | le64_to_cpu(di->id2.i_super.s_first_cluster_group); |
| 2179 | osb->fs_generation = le32_to_cpu(di->i_fs_generation); |
| 2180 | osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); |
| 2181 | trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str, |
| 2182 | (unsigned long long)osb->root_blkno, |
| 2183 | (unsigned long long)osb->system_dir_blkno, |
| 2184 | osb->s_clustersize_bits); |
| 2185 | |
| 2186 | osb->osb_dlm_debug = ocfs2_new_dlm_debug(); |
| 2187 | if (!osb->osb_dlm_debug) { |
| 2188 | status = -ENOMEM; |
| 2189 | mlog_errno(status); |
| 2190 | goto out_uuid_str; |
| 2191 | } |
| 2192 | |
| 2193 | atomic_set(&osb->vol_state, VOLUME_INIT); |
| 2194 | |
| 2195 | /* load root, system_dir, and all global system inodes */ |
| 2196 | status = ocfs2_init_global_system_inodes(osb); |
| 2197 | if (status < 0) { |
| 2198 | mlog_errno(status); |
| 2199 | goto out_dlm_out; |
| 2200 | } |
| 2201 | |
| 2202 | /* |
| 2203 | * global bitmap |
| 2204 | */ |
| 2205 | inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, |
| 2206 | OCFS2_INVALID_SLOT); |
| 2207 | if (!inode) { |
| 2208 | status = -EINVAL; |
| 2209 | mlog_errno(status); |
| 2210 | goto out_system_inodes; |
| 2211 | } |
| 2212 | |
| 2213 | osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; |
| 2214 | osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters; |
| 2215 | iput(inode); |
| 2216 | |
| 2217 | osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0, |
| 2218 | osb->s_feature_incompat) * 8; |
| 2219 | |
| 2220 | status = ocfs2_init_slot_info(osb); |
| 2221 | if (status < 0) { |
| 2222 | mlog_errno(status); |
| 2223 | goto out_system_inodes; |
| 2224 | } |
| 2225 | |
| 2226 | osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM); |
| 2227 | if (!osb->ocfs2_wq) { |
| 2228 | status = -ENOMEM; |
| 2229 | mlog_errno(status); |
| 2230 | goto out_slot_info; |
| 2231 | } |
| 2232 | |
| 2233 | return status; |
| 2234 | |
| 2235 | out_slot_info: |
| 2236 | ocfs2_free_slot_info(osb); |
| 2237 | out_system_inodes: |
| 2238 | ocfs2_release_system_inodes(osb); |
| 2239 | out_dlm_out: |
| 2240 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); |
| 2241 | out_uuid_str: |
| 2242 | kfree(osb->uuid_str); |
| 2243 | out_journal: |
| 2244 | kfree(osb->journal); |
| 2245 | out_orphan_wipes: |
| 2246 | kfree(osb->osb_orphan_wipes); |
| 2247 | out_slot_recovery_gen: |
| 2248 | kfree(osb->slot_recovery_generations); |
| 2249 | out_vol_label: |
| 2250 | kfree(osb->vol_label); |
| 2251 | out_recovery_map: |
| 2252 | kfree(osb->recovery_map); |
| 2253 | out: |
| 2254 | kfree(osb); |
| 2255 | sb->s_fs_info = NULL; |
| 2256 | return status; |
| 2257 | } |
| 2258 | |
| 2259 | /* |
| 2260 | * will return: -EAGAIN if it is ok to keep searching for superblocks |
| 2261 | * -EINVAL if there is a bad superblock |
| 2262 | * 0 on success |
| 2263 | */ |
| 2264 | static int ocfs2_verify_volume(struct ocfs2_dinode *di, |
| 2265 | struct buffer_head *bh, |
| 2266 | u32 blksz, |
| 2267 | struct ocfs2_blockcheck_stats *stats) |
| 2268 | { |
| 2269 | int status = -EAGAIN; |
| 2270 | u32 blksz_bits; |
| 2271 | |
| 2272 | if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, |
| 2273 | strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { |
| 2274 | /* We have to do a raw check of the feature here */ |
| 2275 | if (le32_to_cpu(di->id2.i_super.s_feature_incompat) & |
| 2276 | OCFS2_FEATURE_INCOMPAT_META_ECC) { |
| 2277 | status = ocfs2_block_check_validate(bh->b_data, |
| 2278 | bh->b_size, |
| 2279 | &di->i_check, |
| 2280 | stats); |
| 2281 | if (status) |
| 2282 | goto out; |
| 2283 | } |
| 2284 | status = -EINVAL; |
| 2285 | /* Acceptable block sizes are 512 bytes, 1K, 2K and 4K. */ |
| 2286 | blksz_bits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); |
| 2287 | if (blksz_bits < 9 || blksz_bits > 12) { |
| 2288 | mlog(ML_ERROR, "found superblock with incorrect block " |
| 2289 | "size bits: found %u, should be 9, 10, 11, or 12\n", |
| 2290 | blksz_bits); |
| 2291 | } else if ((1 << blksz_bits) != blksz) { |
| 2292 | mlog(ML_ERROR, "found superblock with incorrect block " |
| 2293 | "size: found %u, should be %u\n", 1 << blksz_bits, blksz); |
| 2294 | } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != |
| 2295 | OCFS2_MAJOR_REV_LEVEL || |
| 2296 | le16_to_cpu(di->id2.i_super.s_minor_rev_level) != |
| 2297 | OCFS2_MINOR_REV_LEVEL) { |
| 2298 | mlog(ML_ERROR, "found superblock with bad version: " |
| 2299 | "found %u.%u, should be %u.%u\n", |
| 2300 | le16_to_cpu(di->id2.i_super.s_major_rev_level), |
| 2301 | le16_to_cpu(di->id2.i_super.s_minor_rev_level), |
| 2302 | OCFS2_MAJOR_REV_LEVEL, |
| 2303 | OCFS2_MINOR_REV_LEVEL); |
| 2304 | } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { |
| 2305 | mlog(ML_ERROR, "bad block number on superblock: " |
| 2306 | "found %llu, should be %llu\n", |
| 2307 | (unsigned long long)le64_to_cpu(di->i_blkno), |
| 2308 | (unsigned long long)bh->b_blocknr); |
| 2309 | } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || |
| 2310 | le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { |
| 2311 | mlog(ML_ERROR, "bad cluster size bit found: %u\n", |
| 2312 | le32_to_cpu(di->id2.i_super.s_clustersize_bits)); |
| 2313 | } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { |
| 2314 | mlog(ML_ERROR, "bad root_blkno: 0\n"); |
| 2315 | } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { |
| 2316 | mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); |
| 2317 | } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { |
| 2318 | mlog(ML_ERROR, |
| 2319 | "Superblock slots found greater than file system " |
| 2320 | "maximum: found %u, max %u\n", |
| 2321 | le16_to_cpu(di->id2.i_super.s_max_slots), |
| 2322 | OCFS2_MAX_SLOTS); |
| 2323 | } else { |
| 2324 | /* found it! */ |
| 2325 | status = 0; |
| 2326 | } |
| 2327 | } |
| 2328 | |
| 2329 | out: |
| 2330 | if (status && status != -EAGAIN) |
| 2331 | mlog_errno(status); |
| 2332 | return status; |
| 2333 | } |
| 2334 | |
| 2335 | static int ocfs2_check_volume(struct ocfs2_super *osb) |
| 2336 | { |
| 2337 | int status; |
| 2338 | int dirty; |
| 2339 | int local; |
| 2340 | struct ocfs2_dinode *local_alloc = NULL; /* only used if we |
| 2341 | * recover |
| 2342 | * ourselves. */ |
| 2343 | |
| 2344 | /* Init our journal object. */ |
| 2345 | status = ocfs2_journal_init(osb, &dirty); |
| 2346 | if (status < 0) { |
| 2347 | mlog(ML_ERROR, "Could not initialize journal!\n"); |
| 2348 | goto finally; |
| 2349 | } |
| 2350 | |
| 2351 | /* Now that journal has been initialized, check to make sure |
| 2352 | entire volume is addressable. */ |
| 2353 | status = ocfs2_journal_addressable(osb); |
| 2354 | if (status) |
| 2355 | goto finally; |
| 2356 | |
| 2357 | /* If the journal was unmounted cleanly then we don't want to |
| 2358 | * recover anything. Otherwise, journal_load will do that |
| 2359 | * dirty work for us :) */ |
| 2360 | if (!dirty) { |
| 2361 | status = ocfs2_journal_wipe(osb->journal, 0); |
| 2362 | if (status < 0) { |
| 2363 | mlog_errno(status); |
| 2364 | goto finally; |
| 2365 | } |
| 2366 | } else { |
| 2367 | printk(KERN_NOTICE "ocfs2: File system on device (%s) was not " |
| 2368 | "unmounted cleanly, recovering it.\n", osb->dev_str); |
| 2369 | } |
| 2370 | |
| 2371 | local = ocfs2_mount_local(osb); |
| 2372 | |
| 2373 | /* will play back anything left in the journal. */ |
| 2374 | status = ocfs2_journal_load(osb->journal, local, dirty); |
| 2375 | if (status < 0) { |
| 2376 | mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); |
| 2377 | goto finally; |
| 2378 | } |
| 2379 | |
| 2380 | if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT) |
| 2381 | jbd2_journal_set_features(osb->journal->j_journal, |
| 2382 | JBD2_FEATURE_COMPAT_CHECKSUM, 0, |
| 2383 | JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); |
| 2384 | else |
| 2385 | jbd2_journal_clear_features(osb->journal->j_journal, |
| 2386 | JBD2_FEATURE_COMPAT_CHECKSUM, 0, |
| 2387 | JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); |
| 2388 | |
| 2389 | if (dirty) { |
| 2390 | /* recover my local alloc if we didn't unmount cleanly. */ |
| 2391 | status = ocfs2_begin_local_alloc_recovery(osb, |
| 2392 | osb->slot_num, |
| 2393 | &local_alloc); |
| 2394 | if (status < 0) { |
| 2395 | mlog_errno(status); |
| 2396 | goto finally; |
| 2397 | } |
| 2398 | /* we complete the recovery process after we've marked |
| 2399 | * ourselves as mounted. */ |
| 2400 | } |
| 2401 | |
| 2402 | status = ocfs2_load_local_alloc(osb); |
| 2403 | if (status < 0) { |
| 2404 | mlog_errno(status); |
| 2405 | goto finally; |
| 2406 | } |
| 2407 | |
| 2408 | if (dirty) { |
| 2409 | /* Recovery will be completed after we've mounted the |
| 2410 | * rest of the volume. */ |
| 2411 | osb->local_alloc_copy = local_alloc; |
| 2412 | local_alloc = NULL; |
| 2413 | } |
| 2414 | |
| 2415 | /* go through each journal, trylock it and if you get the |
| 2416 | * lock, and it's marked as dirty, set the bit in the recover |
| 2417 | * map and launch a recovery thread for it. */ |
| 2418 | status = ocfs2_mark_dead_nodes(osb); |
| 2419 | if (status < 0) { |
| 2420 | mlog_errno(status); |
| 2421 | goto finally; |
| 2422 | } |
| 2423 | |
| 2424 | status = ocfs2_compute_replay_slots(osb); |
| 2425 | if (status < 0) |
| 2426 | mlog_errno(status); |
| 2427 | |
| 2428 | finally: |
| 2429 | kfree(local_alloc); |
| 2430 | |
| 2431 | if (status) |
| 2432 | mlog_errno(status); |
| 2433 | return status; |
| 2434 | } |
| 2435 | |
| 2436 | /* |
| 2437 | * The routine gets called from dismount or close whenever a dismount on |
| 2438 | * volume is requested and the osb open count becomes 1. |
| 2439 | * It will remove the osb from the global list and also free up all the |
| 2440 | * initialized resources and fileobject. |
| 2441 | */ |
| 2442 | static void ocfs2_delete_osb(struct ocfs2_super *osb) |
| 2443 | { |
| 2444 | /* This function assumes that the caller has the main osb resource */ |
| 2445 | |
| 2446 | /* ocfs2_initializer_super have already created this workqueue */ |
| 2447 | if (osb->ocfs2_wq) |
| 2448 | destroy_workqueue(osb->ocfs2_wq); |
| 2449 | |
| 2450 | ocfs2_free_slot_info(osb); |
| 2451 | |
| 2452 | kfree(osb->osb_orphan_wipes); |
| 2453 | kfree(osb->slot_recovery_generations); |
| 2454 | /* FIXME |
| 2455 | * This belongs in journal shutdown, but because we have to |
| 2456 | * allocate osb->journal at the middle of ocfs2_initialize_super(), |
| 2457 | * we free it here. |
| 2458 | */ |
| 2459 | kfree(osb->journal); |
| 2460 | kfree(osb->local_alloc_copy); |
| 2461 | kfree(osb->uuid_str); |
| 2462 | kfree(osb->vol_label); |
| 2463 | ocfs2_put_dlm_debug(osb->osb_dlm_debug); |
| 2464 | memset(osb, 0, sizeof(struct ocfs2_super)); |
| 2465 | } |
| 2466 | |
| 2467 | /* Depending on the mount option passed, perform one of the following: |
| 2468 | * Put OCFS2 into a readonly state (default) |
| 2469 | * Return EIO so that only the process errs |
| 2470 | * Fix the error as if fsck.ocfs2 -y |
| 2471 | * panic |
| 2472 | */ |
| 2473 | static int ocfs2_handle_error(struct super_block *sb) |
| 2474 | { |
| 2475 | struct ocfs2_super *osb = OCFS2_SB(sb); |
| 2476 | int rv = 0; |
| 2477 | |
| 2478 | ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); |
| 2479 | pr_crit("On-disk corruption discovered. " |
| 2480 | "Please run fsck.ocfs2 once the filesystem is unmounted.\n"); |
| 2481 | |
| 2482 | if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) { |
| 2483 | panic("OCFS2: (device %s): panic forced after error\n", |
| 2484 | sb->s_id); |
| 2485 | } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) { |
| 2486 | pr_crit("OCFS2: Returning error to the calling process.\n"); |
| 2487 | rv = -EIO; |
| 2488 | } else { /* default option */ |
| 2489 | rv = -EROFS; |
| 2490 | if (sb_rdonly(sb) && (ocfs2_is_soft_readonly(osb) || ocfs2_is_hard_readonly(osb))) |
| 2491 | return rv; |
| 2492 | |
| 2493 | pr_crit("OCFS2: File system is now read-only.\n"); |
| 2494 | sb->s_flags |= SB_RDONLY; |
| 2495 | ocfs2_set_ro_flag(osb, 0); |
| 2496 | } |
| 2497 | |
| 2498 | return rv; |
| 2499 | } |
| 2500 | |
| 2501 | int __ocfs2_error(struct super_block *sb, const char *function, |
| 2502 | const char *fmt, ...) |
| 2503 | { |
| 2504 | struct va_format vaf; |
| 2505 | va_list args; |
| 2506 | |
| 2507 | va_start(args, fmt); |
| 2508 | vaf.fmt = fmt; |
| 2509 | vaf.va = &args; |
| 2510 | |
| 2511 | /* Not using mlog here because we want to show the actual |
| 2512 | * function the error came from. */ |
| 2513 | printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV", |
| 2514 | sb->s_id, function, &vaf); |
| 2515 | |
| 2516 | va_end(args); |
| 2517 | |
| 2518 | return ocfs2_handle_error(sb); |
| 2519 | } |
| 2520 | |
| 2521 | /* Handle critical errors. This is intentionally more drastic than |
| 2522 | * ocfs2_handle_error, so we only use for things like journal errors, |
| 2523 | * etc. */ |
| 2524 | void __ocfs2_abort(struct super_block *sb, const char *function, |
| 2525 | const char *fmt, ...) |
| 2526 | { |
| 2527 | struct va_format vaf; |
| 2528 | va_list args; |
| 2529 | |
| 2530 | va_start(args, fmt); |
| 2531 | |
| 2532 | vaf.fmt = fmt; |
| 2533 | vaf.va = &args; |
| 2534 | |
| 2535 | printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV", |
| 2536 | sb->s_id, function, &vaf); |
| 2537 | |
| 2538 | va_end(args); |
| 2539 | |
| 2540 | /* We don't have the cluster support yet to go straight to |
| 2541 | * hard readonly in here. Until then, we want to keep |
| 2542 | * ocfs2_abort() so that we can at least mark critical |
| 2543 | * errors. |
| 2544 | * |
| 2545 | * TODO: This should abort the journal and alert other nodes |
| 2546 | * that our slot needs recovery. */ |
| 2547 | |
| 2548 | /* Force a panic(). This stinks, but it's better than letting |
| 2549 | * things continue without having a proper hard readonly |
| 2550 | * here. */ |
| 2551 | if (!ocfs2_mount_local(OCFS2_SB(sb))) |
| 2552 | OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; |
| 2553 | ocfs2_handle_error(sb); |
| 2554 | } |
| 2555 | |
| 2556 | /* |
| 2557 | * Void signal blockers, because in-kernel sigprocmask() only fails |
| 2558 | * when SIG_* is wrong. |
| 2559 | */ |
| 2560 | void ocfs2_block_signals(sigset_t *oldset) |
| 2561 | { |
| 2562 | int rc; |
| 2563 | sigset_t blocked; |
| 2564 | |
| 2565 | sigfillset(&blocked); |
| 2566 | rc = sigprocmask(SIG_BLOCK, &blocked, oldset); |
| 2567 | BUG_ON(rc); |
| 2568 | } |
| 2569 | |
| 2570 | void ocfs2_unblock_signals(sigset_t *oldset) |
| 2571 | { |
| 2572 | int rc = sigprocmask(SIG_SETMASK, oldset, NULL); |
| 2573 | BUG_ON(rc); |
| 2574 | } |
| 2575 | |
| 2576 | module_init(ocfs2_init); |
| 2577 | module_exit(ocfs2_exit); |