| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mark Fasheh | 6395 | 54.00% | 28 | 14.58% |
| Sunil Mushran | 1803 | 15.23% | 16 | 8.33% |
| Jan Kara | 1157 | 9.77% | 18 | 9.38% |
| Joel Becker | 648 | 5.47% | 17 | 8.85% |
| Tiger Yang | 328 | 2.77% | 9 | 4.69% |
| Heming Zhao via Ocfs2-devel | 235 | 1.98% | 6 | 3.12% |
| Goldwyn Rodrigues | 199 | 1.68% | 8 | 4.17% |
| Tao Ma | 150 | 1.27% | 9 | 4.69% |
| Patrick J. LoPresti | 133 | 1.12% | 1 | 0.52% |
| Gang He | 118 | 1.00% | 4 | 2.08% |
| Al Viro | 75 | 0.63% | 9 | 4.69% |
| alex chen | 70 | 0.59% | 1 | 0.52% |
| Tristan Ye | 58 | 0.49% | 1 | 0.52% |
| Yiwen Jiang | 56 | 0.47% | 3 | 1.56% |
| Joseph Qi | 50 | 0.42% | 3 | 1.56% |
| Wengang Wang | 44 | 0.37% | 4 | 2.08% |
| Joe Perches | 42 | 0.35% | 2 | 1.04% |
| Coly Li | 41 | 0.35% | 1 | 0.52% |
| Srinivas Eeda | 35 | 0.30% | 3 | 1.56% |
| David Howells | 34 | 0.29% | 2 | 1.04% |
| Takashi Iwai | 23 | 0.19% | 1 | 0.52% |
| Jun Piao | 18 | 0.15% | 2 | 1.04% |
| Linus Torvalds | 15 | 0.13% | 1 | 0.52% |
| Darrick J. Wong | 12 | 0.10% | 1 | 0.52% |
| Vladimir Davydov | 9 | 0.08% | 2 | 1.04% |
| Ryan Ding | 8 | 0.07% | 1 | 0.52% |
| Valentin Vidic | 8 | 0.07% | 2 | 1.04% |
| Christoph Lameter | 6 | 0.05% | 3 | 1.56% |
| Jeff Mahoney | 6 | 0.05% | 1 | 0.52% |
| Kirill A. Shutemov | 6 | 0.05% | 2 | 1.04% |
| Eric W. Biedermann | 5 | 0.04% | 1 | 0.52% |
| Deepa Dinamani | 5 | 0.04% | 1 | 0.52% |
| zhangyi (F) | 5 | 0.04% | 1 | 0.52% |
| Cheng Renquan | 3 | 0.03% | 1 | 0.52% |
| Nicholas Piggin | 3 | 0.03% | 1 | 0.52% |
| Eric Sesterhenn / Snakebyte | 3 | 0.03% | 1 | 0.52% |
| Linus Torvalds (pre-git) | 3 | 0.03% | 2 | 1.04% |
| Christoph Hellwig | 3 | 0.03% | 1 | 0.52% |
| Paul Jackson | 3 | 0.03% | 2 | 1.04% |
| Bhaktipriya Shridhar | 3 | 0.03% | 1 | 0.52% |
| Song Muchun | 3 | 0.03% | 1 | 0.52% |
| Junxiao Bi | 2 | 0.02% | 1 | 0.52% |
| Alexey Dobriyan | 2 | 0.02% | 2 | 1.04% |
| Kees Cook | 2 | 0.02% | 2 | 1.04% |
| Rui Xiang | 2 | 0.02% | 1 | 0.52% |
| Robert P. J. Day | 2 | 0.02% | 1 | 0.52% |
| Wolfram Sang | 1 | 0.01% | 1 | 0.52% |
| Greg Kroah-Hartman | 1 | 0.01% | 1 | 0.52% |
| Fabian Frederick | 1 | 0.01% | 1 | 0.52% |
| Steven Whitehouse | 1 | 0.01% | 1 | 0.52% |
| Josef 'Jeff' Sipek | 1 | 0.01% | 1 | 0.52% |
| Masahiro Yamada | 1 | 0.01% | 1 | 0.52% |
| Dan Magenheimer | 1 | 0.01% | 1 | 0.52% |
| Kent Overstreet | 1 | 0.01% | 1 | 0.52% |
| Jiufei (Joyce) Xue | 1 | 0.01% | 1 | 0.52% |
| Martin K. Petersen | 1 | 0.01% | 1 | 0.52% |
| Thomas Gleixner | 1 | 0.01% | 1 | 0.52% |
| Total | 11842 | 192 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * super.c * * load/unload driver, mount/dismount volumes * * Copyright (C) 2002, 2004 Oracle. All rights reserved. */ #include <linux/module.h> #include <linux/fs.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/highmem.h> #include <linux/init.h> #include <linux/random.h> #include <linux/statfs.h> #include <linux/moduleparam.h> #include <linux/blkdev.h> #include <linux/socket.h> #include <linux/inet.h> #include <linux/parser.h> #include <linux/crc32.h> #include <linux/debugfs.h> #include <linux/mount.h> #include <linux/seq_file.h> #include <linux/quotaops.h> #include <linux/signal.h> #define CREATE_TRACE_POINTS #include "ocfs2_trace.h" #include <cluster/masklog.h> #include "ocfs2.h" /* this should be the only file to include a version 1 header */ #include "ocfs1_fs_compat.h" #include "alloc.h" #include "aops.h" #include "blockcheck.h" #include "dlmglue.h" #include "export.h" #include "extent_map.h" #include "heartbeat.h" #include "inode.h" #include "journal.h" #include "localalloc.h" #include "namei.h" #include "slot_map.h" #include "super.h" #include "sysfile.h" #include "uptodate.h" #include "xattr.h" #include "quota.h" #include "refcounttree.h" #include "suballoc.h" #include "buffer_head_io.h" #include "filecheck.h" static struct kmem_cache *ocfs2_inode_cachep; struct kmem_cache *ocfs2_dquot_cachep; struct kmem_cache *ocfs2_qf_chunk_cachep; static struct dentry *ocfs2_debugfs_root; MODULE_AUTHOR("Oracle"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("OCFS2 cluster file system"); struct mount_options { unsigned long commit_interval; unsigned long mount_opt; unsigned int atime_quantum; unsigned short slot; int localalloc_opt; unsigned int resv_level; int dir_resv_level; char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; }; static int ocfs2_parse_options(struct super_block *sb, char *options, struct mount_options *mopt, int is_remount); static int ocfs2_check_set_options(struct super_block *sb, struct mount_options *options); static int ocfs2_show_options(struct seq_file *s, struct dentry *root); static void ocfs2_put_super(struct super_block *sb); static int ocfs2_mount_volume(struct super_block *sb); static int ocfs2_remount(struct super_block *sb, int *flags, char *data); static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); static int ocfs2_initialize_mem_caches(void); static void ocfs2_free_mem_caches(void); static void ocfs2_delete_osb(struct ocfs2_super *osb); static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); static int ocfs2_sync_fs(struct super_block *sb, int wait); static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); static void ocfs2_release_system_inodes(struct ocfs2_super *osb); static int ocfs2_check_volume(struct ocfs2_super *osb); static int ocfs2_verify_volume(struct ocfs2_dinode *di, struct buffer_head *bh, u32 sectsize, struct ocfs2_blockcheck_stats *stats); static int ocfs2_initialize_super(struct super_block *sb, struct buffer_head *bh, int sector_size, struct ocfs2_blockcheck_stats *stats); static int ocfs2_get_sector(struct super_block *sb, struct buffer_head **bh, int block, int sect_size); static struct inode *ocfs2_alloc_inode(struct super_block *sb); static void ocfs2_free_inode(struct inode *inode); static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); static int ocfs2_enable_quotas(struct ocfs2_super *osb); static void ocfs2_disable_quotas(struct ocfs2_super *osb); static struct dquot __rcu **ocfs2_get_dquots(struct inode *inode) { return OCFS2_I(inode)->i_dquot; } static const struct super_operations ocfs2_sops = { .statfs = ocfs2_statfs, .alloc_inode = ocfs2_alloc_inode, .free_inode = ocfs2_free_inode, .drop_inode = ocfs2_drop_inode, .evict_inode = ocfs2_evict_inode, .sync_fs = ocfs2_sync_fs, .put_super = ocfs2_put_super, .remount_fs = ocfs2_remount, .show_options = ocfs2_show_options, .quota_read = ocfs2_quota_read, .quota_write = ocfs2_quota_write, .get_dquots = ocfs2_get_dquots, }; enum { Opt_barrier, Opt_err_panic, Opt_err_ro, Opt_intr, Opt_nointr, Opt_hb_none, Opt_hb_local, Opt_hb_global, Opt_data_ordered, Opt_data_writeback, Opt_atime_quantum, Opt_slot, Opt_commit, Opt_localalloc, Opt_localflocks, Opt_stack, Opt_user_xattr, Opt_nouser_xattr, Opt_inode64, Opt_acl, Opt_noacl, Opt_usrquota, Opt_grpquota, Opt_coherency_buffered, Opt_coherency_full, Opt_resv_level, Opt_dir_resv_level, Opt_journal_async_commit, Opt_err_cont, Opt_err, }; static const match_table_t tokens = { {Opt_barrier, "barrier=%u"}, {Opt_err_panic, "errors=panic"}, {Opt_err_ro, "errors=remount-ro"}, {Opt_intr, "intr"}, {Opt_nointr, "nointr"}, {Opt_hb_none, OCFS2_HB_NONE}, {Opt_hb_local, OCFS2_HB_LOCAL}, {Opt_hb_global, OCFS2_HB_GLOBAL}, {Opt_data_ordered, "data=ordered"}, {Opt_data_writeback, "data=writeback"}, {Opt_atime_quantum, "atime_quantum=%u"}, {Opt_slot, "preferred_slot=%u"}, {Opt_commit, "commit=%u"}, {Opt_localalloc, "localalloc=%d"}, {Opt_localflocks, "localflocks"}, {Opt_stack, "cluster_stack=%s"}, {Opt_user_xattr, "user_xattr"}, {Opt_nouser_xattr, "nouser_xattr"}, {Opt_inode64, "inode64"}, {Opt_acl, "acl"}, {Opt_noacl, "noacl"}, {Opt_usrquota, "usrquota"}, {Opt_grpquota, "grpquota"}, {Opt_coherency_buffered, "coherency=buffered"}, {Opt_coherency_full, "coherency=full"}, {Opt_resv_level, "resv_level=%u"}, {Opt_dir_resv_level, "dir_resv_level=%u"}, {Opt_journal_async_commit, "journal_async_commit"}, {Opt_err_cont, "errors=continue"}, {Opt_err, NULL} }; #ifdef CONFIG_DEBUG_FS static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) { struct ocfs2_cluster_connection *cconn = osb->cconn; struct ocfs2_recovery_map *rm = osb->recovery_map; struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan; int i, out = 0; unsigned long flags; out += scnprintf(buf + out, len - out, "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n", "Device", osb->dev_str, osb->uuid_str, osb->fs_generation, osb->vol_label); out += scnprintf(buf + out, len - out, "%10s => State: %d Flags: 0x%lX\n", "Volume", atomic_read(&osb->vol_state), osb->osb_flags); out += scnprintf(buf + out, len - out, "%10s => Block: %lu Cluster: %d\n", "Sizes", osb->sb->s_blocksize, osb->s_clustersize); out += scnprintf(buf + out, len - out, "%10s => Compat: 0x%X Incompat: 0x%X " "ROcompat: 0x%X\n", "Features", osb->s_feature_compat, osb->s_feature_incompat, osb->s_feature_ro_compat); out += scnprintf(buf + out, len - out, "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount", osb->s_mount_opt, osb->s_atime_quantum); if (cconn) { out += scnprintf(buf + out, len - out, "%10s => Stack: %s Name: %*s " "Version: %d.%d\n", "Cluster", (*osb->osb_cluster_stack == '\0' ? "o2cb" : osb->osb_cluster_stack), cconn->cc_namelen, cconn->cc_name, cconn->cc_version.pv_major, cconn->cc_version.pv_minor); } spin_lock_irqsave(&osb->dc_task_lock, flags); out += scnprintf(buf + out, len - out, "%10s => Pid: %d Count: %lu WakeSeq: %lu " "WorkSeq: %lu\n", "DownCnvt", (osb->dc_task ? task_pid_nr(osb->dc_task) : -1), osb->blocked_lock_count, osb->dc_wake_sequence, osb->dc_work_sequence); spin_unlock_irqrestore(&osb->dc_task_lock, flags); spin_lock(&osb->osb_lock); out += scnprintf(buf + out, len - out, "%10s => Pid: %d Nodes:", "Recovery", (osb->recovery_thread_task ? task_pid_nr(osb->recovery_thread_task) : -1)); if (rm->rm_used == 0) out += scnprintf(buf + out, len - out, " None\n"); else { for (i = 0; i < rm->rm_used; i++) out += scnprintf(buf + out, len - out, " %d", rm->rm_entries[i]); out += scnprintf(buf + out, len - out, "\n"); } spin_unlock(&osb->osb_lock); out += scnprintf(buf + out, len - out, "%10s => Pid: %d Interval: %lu\n", "Commit", (osb->commit_task ? task_pid_nr(osb->commit_task) : -1), osb->osb_commit_interval); out += scnprintf(buf + out, len - out, "%10s => State: %d TxnId: %lu NumTxns: %d\n", "Journal", osb->journal->j_state, osb->journal->j_trans_id, atomic_read(&osb->journal->j_num_trans)); out += scnprintf(buf + out, len - out, "%10s => GlobalAllocs: %d LocalAllocs: %d " "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", "Stats", atomic_read(&osb->alloc_stats.bitmap_data), atomic_read(&osb->alloc_stats.local_data), atomic_read(&osb->alloc_stats.bg_allocs), atomic_read(&osb->alloc_stats.moves), atomic_read(&osb->alloc_stats.bg_extends)); out += scnprintf(buf + out, len - out, "%10s => State: %u Descriptor: %llu Size: %u bits " "Default: %u bits\n", "LocalAlloc", osb->local_alloc_state, (unsigned long long)osb->la_last_gd, osb->local_alloc_bits, osb->local_alloc_default_bits); spin_lock(&osb->osb_lock); out += scnprintf(buf + out, len - out, "%10s => InodeSlot: %d StolenInodes: %d, " "MetaSlot: %d StolenMeta: %d\n", "Steal", osb->s_inode_steal_slot, atomic_read(&osb->s_num_inodes_stolen), osb->s_meta_steal_slot, atomic_read(&osb->s_num_meta_stolen)); spin_unlock(&osb->osb_lock); out += scnprintf(buf + out, len - out, "OrphanScan => "); out += scnprintf(buf + out, len - out, "Local: %u Global: %u ", os->os_count, os->os_seqno); out += scnprintf(buf + out, len - out, " Last Scan: "); if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) out += scnprintf(buf + out, len - out, "Disabled\n"); else out += scnprintf(buf + out, len - out, "%lu seconds ago\n", (unsigned long)(ktime_get_seconds() - os->os_scantime)); out += scnprintf(buf + out, len - out, "%10s => %3s %10s\n", "Slots", "Num", "RecoGen"); for (i = 0; i < osb->max_slots; ++i) { out += scnprintf(buf + out, len - out, "%10s %c %3d %10d\n", " ", (i == osb->slot_num ? '*' : ' '), i, osb->slot_recovery_generations[i]); } return out; } static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) { struct ocfs2_super *osb = inode->i_private; char *buf = NULL; buf = kmalloc(PAGE_SIZE, GFP_KERNEL); if (!buf) goto bail; i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE)); file->private_data = buf; return 0; bail: return -ENOMEM; } static int ocfs2_debug_release(struct inode *inode, struct file *file) { kfree(file->private_data); return 0; } static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, i_size_read(file->f_mapping->host)); } #else static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) { return 0; } static int ocfs2_debug_release(struct inode *inode, struct file *file) { return 0; } static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) { return 0; } #endif /* CONFIG_DEBUG_FS */ static const struct file_operations ocfs2_osb_debug_fops = { .open = ocfs2_osb_debug_open, .release = ocfs2_debug_release, .read = ocfs2_debug_read, .llseek = generic_file_llseek, }; static int ocfs2_sync_fs(struct super_block *sb, int wait) { int status; tid_t target; struct ocfs2_super *osb = OCFS2_SB(sb); if (ocfs2_is_hard_readonly(osb)) return -EROFS; if (wait) { status = ocfs2_flush_truncate_log(osb); if (status < 0) mlog_errno(status); } else { ocfs2_schedule_truncate_log_flush(osb, 0); } if (jbd2_journal_start_commit(osb->journal->j_journal, &target)) { if (wait) jbd2_log_wait_commit(osb->journal->j_journal, target); } return 0; } static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino) { if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA) && (ino == USER_QUOTA_SYSTEM_INODE || ino == LOCAL_USER_QUOTA_SYSTEM_INODE)) return 0; if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA) && (ino == GROUP_QUOTA_SYSTEM_INODE || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE)) return 0; return 1; } static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb) { struct inode *new = NULL; int status = 0; int i; new = ocfs2_iget(osb, osb->root_blkno, OCFS2_FI_FLAG_SYSFILE, 0); if (IS_ERR(new)) { status = PTR_ERR(new); mlog_errno(status); goto bail; } osb->root_inode = new; new = ocfs2_iget(osb, osb->system_dir_blkno, OCFS2_FI_FLAG_SYSFILE, 0); if (IS_ERR(new)) { status = PTR_ERR(new); mlog_errno(status); goto bail; } osb->sys_root_inode = new; for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE; i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) { if (!ocfs2_need_system_inode(osb, i)) continue; new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); if (!new) { ocfs2_release_system_inodes(osb); status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL; mlog_errno(status); mlog(ML_ERROR, "Unable to load system inode %d, " "possibly corrupt fs?", i); goto bail; } // the array now has one ref, so drop this one iput(new); } bail: if (status) mlog_errno(status); return status; } static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb) { struct inode *new = NULL; int status = 0; int i; for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1; i < NUM_SYSTEM_INODES; i++) { if (!ocfs2_need_system_inode(osb, i)) continue; new = ocfs2_get_system_file_inode(osb, i, osb->slot_num); if (!new) { ocfs2_release_system_inodes(osb); status = ocfs2_is_soft_readonly(osb) ? -EROFS : -EINVAL; mlog(ML_ERROR, "status=%d, sysfile=%d, slot=%d\n", status, i, osb->slot_num); goto bail; } /* the array now has one ref, so drop this one */ iput(new); } bail: if (status) mlog_errno(status); return status; } static void ocfs2_release_system_inodes(struct ocfs2_super *osb) { int i; struct inode *inode; for (i = 0; i < NUM_GLOBAL_SYSTEM_INODES; i++) { inode = osb->global_system_inodes[i]; if (inode) { iput(inode); osb->global_system_inodes[i] = NULL; } } inode = osb->sys_root_inode; if (inode) { iput(inode); osb->sys_root_inode = NULL; } inode = osb->root_inode; if (inode) { iput(inode); osb->root_inode = NULL; } if (!osb->local_system_inodes) return; for (i = 0; i < NUM_LOCAL_SYSTEM_INODES * osb->max_slots; i++) { if (osb->local_system_inodes[i]) { iput(osb->local_system_inodes[i]); osb->local_system_inodes[i] = NULL; } } kfree(osb->local_system_inodes); osb->local_system_inodes = NULL; } /* We're allocating fs objects, use GFP_NOFS */ static struct inode *ocfs2_alloc_inode(struct super_block *sb) { struct ocfs2_inode_info *oi; oi = alloc_inode_sb(sb, ocfs2_inode_cachep, GFP_NOFS); if (!oi) return NULL; oi->i_sync_tid = 0; oi->i_datasync_tid = 0; memset(&oi->i_dquot, 0, sizeof(oi->i_dquot)); jbd2_journal_init_jbd_inode(&oi->ip_jinode, &oi->vfs_inode); return &oi->vfs_inode; } static void ocfs2_free_inode(struct inode *inode) { kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode)); } static unsigned long long ocfs2_max_file_offset(unsigned int bbits, unsigned int cbits) { unsigned int bytes = 1 << cbits; unsigned int trim = bytes; unsigned int bitshift = 32; /* * i_size and all block offsets in ocfs2 are always 64 bits * wide. i_clusters is 32 bits, in cluster-sized units. So on * 64 bit platforms, cluster size will be the limiting factor. */ #if BITS_PER_LONG == 32 BUILD_BUG_ON(sizeof(sector_t) != 8); /* * We might be limited by page cache size. */ if (bytes > PAGE_SIZE) { bytes = PAGE_SIZE; trim = 1; /* * Shift by 31 here so that we don't get larger than * MAX_LFS_FILESIZE */ bitshift = 31; } #endif /* * Trim by a whole cluster when we can actually approach the * on-disk limits. Otherwise we can overflow i_clusters when * an extent start is at the max offset. */ return (((unsigned long long)bytes) << bitshift) - trim; } static int ocfs2_remount(struct super_block *sb, int *flags, char *data) { int incompat_features; int ret = 0; struct mount_options parsed_options; struct ocfs2_super *osb = OCFS2_SB(sb); u32 tmp; sync_filesystem(sb); if (!ocfs2_parse_options(sb, data, &parsed_options, 1) || !ocfs2_check_set_options(sb, &parsed_options)) { ret = -EINVAL; goto out; } tmp = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL | OCFS2_MOUNT_HB_NONE; if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) { ret = -EINVAL; mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n"); goto out; } if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) != (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) { ret = -EINVAL; mlog(ML_ERROR, "Cannot change data mode on remount\n"); goto out; } /* Probably don't want this on remount; it might * mess with other nodes */ if (!(osb->s_mount_opt & OCFS2_MOUNT_INODE64) && (parsed_options.mount_opt & OCFS2_MOUNT_INODE64)) { ret = -EINVAL; mlog(ML_ERROR, "Cannot enable inode64 on remount\n"); goto out; } /* We're going to/from readonly mode. */ if ((bool)(*flags & SB_RDONLY) != sb_rdonly(sb)) { /* Disable quota accounting before remounting RO */ if (*flags & SB_RDONLY) { ret = ocfs2_susp_quotas(osb, 0); if (ret < 0) goto out; } /* Lock here so the check of HARD_RO and the potential * setting of SOFT_RO is atomic. */ spin_lock(&osb->osb_lock); if (osb->osb_flags & OCFS2_OSB_HARD_RO) { mlog(ML_ERROR, "Remount on readonly device is forbidden.\n"); ret = -EROFS; goto unlock_osb; } if (*flags & SB_RDONLY) { sb->s_flags |= SB_RDONLY; osb->osb_flags |= OCFS2_OSB_SOFT_RO; } else { if (osb->osb_flags & OCFS2_OSB_ERROR_FS) { mlog(ML_ERROR, "Cannot remount RDWR " "filesystem due to previous errors.\n"); ret = -EROFS; goto unlock_osb; } incompat_features = OCFS2_HAS_RO_COMPAT_FEATURE(sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP); if (incompat_features) { mlog(ML_ERROR, "Cannot remount RDWR because " "of unsupported optional features " "(%x).\n", incompat_features); ret = -EINVAL; goto unlock_osb; } sb->s_flags &= ~SB_RDONLY; osb->osb_flags &= ~OCFS2_OSB_SOFT_RO; } trace_ocfs2_remount(sb->s_flags, osb->osb_flags, *flags); unlock_osb: spin_unlock(&osb->osb_lock); /* Enable quota accounting after remounting RW */ if (!ret && !(*flags & SB_RDONLY)) { if (sb_any_quota_suspended(sb)) ret = ocfs2_susp_quotas(osb, 1); else ret = ocfs2_enable_quotas(osb); if (ret < 0) { /* Return back changes... */ spin_lock(&osb->osb_lock); sb->s_flags |= SB_RDONLY; osb->osb_flags |= OCFS2_OSB_SOFT_RO; spin_unlock(&osb->osb_lock); goto out; } } } if (!ret) { /* Only save off the new mount options in case of a successful * remount. */ osb->s_mount_opt = parsed_options.mount_opt; osb->s_atime_quantum = parsed_options.atime_quantum; osb->preferred_slot = parsed_options.slot; if (parsed_options.commit_interval) osb->osb_commit_interval = parsed_options.commit_interval; if (!ocfs2_is_hard_readonly(osb)) ocfs2_set_journal_params(osb); sb->s_flags = (sb->s_flags & ~SB_POSIXACL) | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? SB_POSIXACL : 0); } out: return ret; } static int ocfs2_sb_probe(struct super_block *sb, struct buffer_head **bh, int *sector_size, struct ocfs2_blockcheck_stats *stats) { int status, tmpstat; struct ocfs1_vol_disk_hdr *hdr; struct ocfs2_dinode *di; int blksize; *bh = NULL; /* may be > 512 */ *sector_size = bdev_logical_block_size(sb->s_bdev); if (*sector_size > OCFS2_MAX_BLOCKSIZE) { mlog(ML_ERROR, "Hardware sector size too large: %d (max=%d)\n", *sector_size, OCFS2_MAX_BLOCKSIZE); status = -EINVAL; goto bail; } /* Can this really happen? */ if (*sector_size < OCFS2_MIN_BLOCKSIZE) *sector_size = OCFS2_MIN_BLOCKSIZE; /* check block zero for old format */ status = ocfs2_get_sector(sb, bh, 0, *sector_size); if (status < 0) { mlog_errno(status); goto bail; } hdr = (struct ocfs1_vol_disk_hdr *) (*bh)->b_data; if (hdr->major_version == OCFS1_MAJOR_VERSION) { mlog(ML_ERROR, "incompatible version: %u.%u\n", hdr->major_version, hdr->minor_version); status = -EINVAL; } if (memcmp(hdr->signature, OCFS1_VOLUME_SIGNATURE, strlen(OCFS1_VOLUME_SIGNATURE)) == 0) { mlog(ML_ERROR, "incompatible volume signature: %8s\n", hdr->signature); status = -EINVAL; } brelse(*bh); *bh = NULL; if (status < 0) { mlog(ML_ERROR, "This is an ocfs v1 filesystem which must be " "upgraded before mounting with ocfs v2\n"); goto bail; } /* * Now check at magic offset for 512, 1024, 2048, 4096 * blocksizes. 4096 is the maximum blocksize because it is * the minimum clustersize. */ status = -EINVAL; for (blksize = *sector_size; blksize <= OCFS2_MAX_BLOCKSIZE; blksize <<= 1) { tmpstat = ocfs2_get_sector(sb, bh, OCFS2_SUPER_BLOCK_BLKNO, blksize); if (tmpstat < 0) { status = tmpstat; mlog_errno(status); break; } di = (struct ocfs2_dinode *) (*bh)->b_data; memset(stats, 0, sizeof(struct ocfs2_blockcheck_stats)); spin_lock_init(&stats->b_lock); tmpstat = ocfs2_verify_volume(di, *bh, blksize, stats); if (tmpstat < 0) { brelse(*bh); *bh = NULL; } if (tmpstat != -EAGAIN) { status = tmpstat; break; } } bail: return status; } static int ocfs2_verify_heartbeat(struct ocfs2_super *osb) { u32 hb_enabled = OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL; if (osb->s_mount_opt & hb_enabled) { if (ocfs2_mount_local(osb)) { mlog(ML_ERROR, "Cannot heartbeat on a locally " "mounted device.\n"); return -EINVAL; } if (ocfs2_userspace_stack(osb)) { mlog(ML_ERROR, "Userspace stack expected, but " "o2cb heartbeat arguments passed to mount\n"); return -EINVAL; } if (((osb->s_mount_opt & OCFS2_MOUNT_HB_GLOBAL) && !ocfs2_cluster_o2cb_global_heartbeat(osb)) || ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) && ocfs2_cluster_o2cb_global_heartbeat(osb))) { mlog(ML_ERROR, "Mismatching o2cb heartbeat modes\n"); return -EINVAL; } } if (!(osb->s_mount_opt & hb_enabled)) { if (!ocfs2_mount_local(osb) && !ocfs2_is_hard_readonly(osb) && !ocfs2_userspace_stack(osb)) { mlog(ML_ERROR, "Heartbeat has to be started to mount " "a read-write clustered device.\n"); return -EINVAL; } } return 0; } /* * If we're using a userspace stack, mount should have passed * a name that matches the disk. If not, mount should not * have passed a stack. */ static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb, struct mount_options *mopt) { if (!ocfs2_userspace_stack(osb) && mopt->cluster_stack[0]) { mlog(ML_ERROR, "cluster stack passed to mount, but this filesystem " "does not support it\n"); return -EINVAL; } if (ocfs2_userspace_stack(osb) && strncmp(osb->osb_cluster_stack, mopt->cluster_stack, OCFS2_STACK_LABEL_LEN)) { mlog(ML_ERROR, "cluster stack passed to mount (\"%s\") does not " "match the filesystem (\"%s\")\n", mopt->cluster_stack, osb->osb_cluster_stack); return -EINVAL; } return 0; } static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend) { int type; struct super_block *sb = osb->sb; unsigned int feature[OCFS2_MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; int status = 0; for (type = 0; type < OCFS2_MAXQUOTAS; type++) { if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) continue; if (unsuspend) status = dquot_resume(sb, type); else { struct ocfs2_mem_dqinfo *oinfo; /* Cancel periodic syncing before suspending */ oinfo = sb_dqinfo(sb, type)->dqi_priv; cancel_delayed_work_sync(&oinfo->dqi_sync_work); status = dquot_suspend(sb, type); } if (status < 0) break; } if (status < 0) mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on " "remount (error = %d).\n", status); return status; } static int ocfs2_enable_quotas(struct ocfs2_super *osb) { struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL }; struct super_block *sb = osb->sb; unsigned int feature[OCFS2_MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA}; unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE, LOCAL_GROUP_QUOTA_SYSTEM_INODE }; int status; int type; sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE; for (type = 0; type < OCFS2_MAXQUOTAS; type++) { if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type])) continue; inode[type] = ocfs2_get_system_file_inode(osb, ino[type], osb->slot_num); if (!inode[type]) { status = -ENOENT; goto out_quota_off; } status = dquot_load_quota_inode(inode[type], type, QFMT_OCFS2, DQUOT_USAGE_ENABLED); if (status < 0) goto out_quota_off; } for (type = 0; type < OCFS2_MAXQUOTAS; type++) iput(inode[type]); return 0; out_quota_off: ocfs2_disable_quotas(osb); for (type = 0; type < OCFS2_MAXQUOTAS; type++) iput(inode[type]); mlog_errno(status); return status; } static void ocfs2_disable_quotas(struct ocfs2_super *osb) { int type; struct inode *inode; struct super_block *sb = osb->sb; struct ocfs2_mem_dqinfo *oinfo; /* We mostly ignore errors in this function because there's not much * we can do when we see them */ for (type = 0; type < OCFS2_MAXQUOTAS; type++) { if (!sb_has_quota_loaded(sb, type)) continue; if (!sb_has_quota_suspended(sb, type)) { oinfo = sb_dqinfo(sb, type)->dqi_priv; cancel_delayed_work_sync(&oinfo->dqi_sync_work); } inode = igrab(sb->s_dquot.files[type]); /* Turn off quotas. This will remove all dquot structures from * memory and so they will be automatically synced to global * quota files */ dquot_disable(sb, type, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED); iput(inode); } } static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) { struct dentry *root; int status, sector_size; struct mount_options parsed_options; struct inode *inode = NULL; struct ocfs2_super *osb = NULL; struct buffer_head *bh = NULL; char nodestr[12]; struct ocfs2_blockcheck_stats stats; trace_ocfs2_fill_super(sb, data, silent); if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) { status = -EINVAL; goto out; } /* probe for superblock */ status = ocfs2_sb_probe(sb, &bh, §or_size, &stats); if (status < 0) { mlog(ML_ERROR, "superblock probe failed!\n"); goto out; } status = ocfs2_initialize_super(sb, bh, sector_size, &stats); brelse(bh); bh = NULL; if (status < 0) goto out; osb = OCFS2_SB(sb); if (!ocfs2_check_set_options(sb, &parsed_options)) { status = -EINVAL; goto out_super; } osb->s_mount_opt = parsed_options.mount_opt; osb->s_atime_quantum = parsed_options.atime_quantum; osb->preferred_slot = parsed_options.slot; osb->osb_commit_interval = parsed_options.commit_interval; ocfs2_la_set_sizes(osb, parsed_options.localalloc_opt); osb->osb_resv_level = parsed_options.resv_level; osb->osb_dir_resv_level = parsed_options.resv_level; if (parsed_options.dir_resv_level == -1) osb->osb_dir_resv_level = parsed_options.resv_level; else osb->osb_dir_resv_level = parsed_options.dir_resv_level; status = ocfs2_verify_userspace_stack(osb, &parsed_options); if (status) goto out_super; sb->s_magic = OCFS2_SUPER_MAGIC; sb->s_flags = (sb->s_flags & ~(SB_POSIXACL | SB_NOSEC)) | ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? SB_POSIXACL : 0); /* Hard readonly mode only if: bdev_read_only, SB_RDONLY, * heartbeat=none */ if (bdev_read_only(sb->s_bdev)) { if (!sb_rdonly(sb)) { status = -EACCES; mlog(ML_ERROR, "Readonly device detected but readonly " "mount was not specified.\n"); goto out_super; } /* You should not be able to start a local heartbeat * on a readonly device. */ if (osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) { status = -EROFS; mlog(ML_ERROR, "Local heartbeat specified on readonly " "device.\n"); goto out_super; } status = ocfs2_check_journals_nolocks(osb); if (status < 0) { if (status == -EROFS) mlog(ML_ERROR, "Recovery required on readonly " "file system, but write access is " "unavailable.\n"); goto out_super; } ocfs2_set_ro_flag(osb, 1); printk(KERN_NOTICE "ocfs2: Readonly device (%s) detected. " "Cluster services will not be used for this mount. " "Recovery will be skipped.\n", osb->dev_str); } if (!ocfs2_is_hard_readonly(osb)) { if (sb_rdonly(sb)) ocfs2_set_ro_flag(osb, 0); } status = ocfs2_verify_heartbeat(osb); if (status < 0) goto out_super; osb->osb_debug_root = debugfs_create_dir(osb->uuid_str, ocfs2_debugfs_root); debugfs_create_file("fs_state", S_IFREG|S_IRUSR, osb->osb_debug_root, osb, &ocfs2_osb_debug_fops); if (ocfs2_meta_ecc(osb)) { ocfs2_initialize_journal_triggers(sb, osb->s_journal_triggers); ocfs2_blockcheck_stats_debugfs_install( &osb->osb_ecc_stats, osb->osb_debug_root); } status = ocfs2_mount_volume(sb); if (status < 0) goto out_debugfs; if (osb->root_inode) inode = igrab(osb->root_inode); if (!inode) { status = -EIO; goto out_dismount; } osb->osb_dev_kset = kset_create_and_add(sb->s_id, NULL, &ocfs2_kset->kobj); if (!osb->osb_dev_kset) { status = -ENOMEM; mlog(ML_ERROR, "Unable to create device kset %s.\n", sb->s_id); goto out_dismount; } /* Create filecheck sysfs related directories/files at * /sys/fs/ocfs2/<devname>/filecheck */ if (ocfs2_filecheck_create_sysfs(osb)) { status = -ENOMEM; mlog(ML_ERROR, "Unable to create filecheck sysfs directory at " "/sys/fs/ocfs2/%s/filecheck.\n", sb->s_id); goto out_dismount; } root = d_make_root(inode); if (!root) { status = -ENOMEM; goto out_dismount; } sb->s_root = root; ocfs2_complete_mount_recovery(osb); if (ocfs2_mount_local(osb)) snprintf(nodestr, sizeof(nodestr), "local"); else snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); printk(KERN_INFO "ocfs2: Mounting device (%s) on (node %s, slot %d) " "with %s data mode.\n", osb->dev_str, nodestr, osb->slot_num, osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK ? "writeback" : "ordered"); atomic_set(&osb->vol_state, VOLUME_MOUNTED); wake_up(&osb->osb_mount_event); /* Now we can initialize quotas because we can afford to wait * for cluster locks recovery now. That also means that truncation * log recovery can happen but that waits for proper quota setup */ if (!sb_rdonly(sb)) { status = ocfs2_enable_quotas(osb); if (status < 0) { /* We have to err-out specially here because * s_root is already set */ mlog_errno(status); atomic_set(&osb->vol_state, VOLUME_DISABLED); wake_up(&osb->osb_mount_event); return status; } } ocfs2_complete_quota_recovery(osb); /* Now we wake up again for processes waiting for quotas */ atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS); wake_up(&osb->osb_mount_event); /* Start this when the mount is almost sure of being successful */ ocfs2_orphan_scan_start(osb); return status; out_dismount: atomic_set(&osb->vol_state, VOLUME_DISABLED); wake_up(&osb->osb_mount_event); ocfs2_free_replay_slots(osb); ocfs2_dismount_volume(sb, 1); goto out; out_debugfs: debugfs_remove_recursive(osb->osb_debug_root); out_super: ocfs2_release_system_inodes(osb); kfree(osb->recovery_map); ocfs2_delete_osb(osb); kfree(osb); out: mlog_errno(status); return status; } static struct dentry *ocfs2_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { return mount_bdev(fs_type, flags, dev_name, data, ocfs2_fill_super); } static struct file_system_type ocfs2_fs_type = { .owner = THIS_MODULE, .name = "ocfs2", .mount = ocfs2_mount, .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, .next = NULL }; MODULE_ALIAS_FS("ocfs2"); static int ocfs2_check_set_options(struct super_block *sb, struct mount_options *options) { if (options->mount_opt & OCFS2_MOUNT_USRQUOTA && !OCFS2_HAS_RO_COMPAT_FEATURE(sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) { mlog(ML_ERROR, "User quotas were requested, but this " "filesystem does not have the feature enabled.\n"); return 0; } if (options->mount_opt & OCFS2_MOUNT_GRPQUOTA && !OCFS2_HAS_RO_COMPAT_FEATURE(sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) { mlog(ML_ERROR, "Group quotas were requested, but this " "filesystem does not have the feature enabled.\n"); return 0; } if (options->mount_opt & OCFS2_MOUNT_POSIX_ACL && !OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) { mlog(ML_ERROR, "ACL support requested but extended attributes " "feature is not enabled\n"); return 0; } /* No ACL setting specified? Use XATTR feature... */ if (!(options->mount_opt & (OCFS2_MOUNT_POSIX_ACL | OCFS2_MOUNT_NO_POSIX_ACL))) { if (OCFS2_HAS_INCOMPAT_FEATURE(sb, OCFS2_FEATURE_INCOMPAT_XATTR)) options->mount_opt |= OCFS2_MOUNT_POSIX_ACL; else options->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; } return 1; } static int ocfs2_parse_options(struct super_block *sb, char *options, struct mount_options *mopt, int is_remount) { int status, user_stack = 0; char *p; u32 tmp; int token, option; substring_t args[MAX_OPT_ARGS]; trace_ocfs2_parse_options(is_remount, options ? options : "(none)"); mopt->commit_interval = 0; mopt->mount_opt = OCFS2_MOUNT_NOINTR; mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; mopt->slot = OCFS2_INVALID_SLOT; mopt->localalloc_opt = -1; mopt->cluster_stack[0] = '\0'; mopt->resv_level = OCFS2_DEFAULT_RESV_LEVEL; mopt->dir_resv_level = -1; if (!options) { status = 1; goto bail; } while ((p = strsep(&options, ",")) != NULL) { if (!*p) continue; token = match_token(p, tokens, args); switch (token) { case Opt_hb_local: mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL; break; case Opt_hb_none: mopt->mount_opt |= OCFS2_MOUNT_HB_NONE; break; case Opt_hb_global: mopt->mount_opt |= OCFS2_MOUNT_HB_GLOBAL; break; case Opt_barrier: if (match_int(&args[0], &option)) { status = 0; goto bail; } if (option) mopt->mount_opt |= OCFS2_MOUNT_BARRIER; else mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER; break; case Opt_intr: mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR; break; case Opt_nointr: mopt->mount_opt |= OCFS2_MOUNT_NOINTR; break; case Opt_err_panic: mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT; mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS; mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; break; case Opt_err_ro: mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_CONT; mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; mopt->mount_opt |= OCFS2_MOUNT_ERRORS_ROFS; break; case Opt_err_cont: mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_ROFS; mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC; mopt->mount_opt |= OCFS2_MOUNT_ERRORS_CONT; break; case Opt_data_ordered: mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK; break; case Opt_data_writeback: mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK; break; case Opt_user_xattr: mopt->mount_opt &= ~OCFS2_MOUNT_NOUSERXATTR; break; case Opt_nouser_xattr: mopt->mount_opt |= OCFS2_MOUNT_NOUSERXATTR; break; case Opt_atime_quantum: if (match_int(&args[0], &option)) { status = 0; goto bail; } if (option >= 0) mopt->atime_quantum = option; break; case Opt_slot: if (match_int(&args[0], &option)) { status = 0; goto bail; } if (option) mopt->slot = (u16)option; break; case Opt_commit: if (match_int(&args[0], &option)) { status = 0; goto bail; } if (option < 0) return 0; if (option == 0) option = JBD2_DEFAULT_MAX_COMMIT_AGE; mopt->commit_interval = HZ * option; break; case Opt_localalloc: if (match_int(&args[0], &option)) { status = 0; goto bail; } if (option >= 0) mopt->localalloc_opt = option; break; case Opt_localflocks: /* * Changing this during remount could race * flock() requests, or "unbalance" existing * ones (e.g., a lock is taken in one mode but * dropped in the other). If users care enough * to flip locking modes during remount, we * could add a "local" flag to individual * flock structures for proper tracking of * state. */ if (!is_remount) mopt->mount_opt |= OCFS2_MOUNT_LOCALFLOCKS; break; case Opt_stack: /* Check both that the option we were passed * is of the right length and that it is a proper * string of the right length. */ if (((args[0].to - args[0].from) != OCFS2_STACK_LABEL_LEN) || (strnlen(args[0].from, OCFS2_STACK_LABEL_LEN) != OCFS2_STACK_LABEL_LEN)) { mlog(ML_ERROR, "Invalid cluster_stack option\n"); status = 0; goto bail; } memcpy(mopt->cluster_stack, args[0].from, OCFS2_STACK_LABEL_LEN); mopt->cluster_stack[OCFS2_STACK_LABEL_LEN] = '\0'; /* * Open code the memcmp here as we don't have * an osb to pass to * ocfs2_userspace_stack(). */ if (memcmp(mopt->cluster_stack, OCFS2_CLASSIC_CLUSTER_STACK, OCFS2_STACK_LABEL_LEN)) user_stack = 1; break; case Opt_inode64: mopt->mount_opt |= OCFS2_MOUNT_INODE64; break; case Opt_usrquota: mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA; break; case Opt_grpquota: mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA; break; case Opt_coherency_buffered: mopt->mount_opt |= OCFS2_MOUNT_COHERENCY_BUFFERED; break; case Opt_coherency_full: mopt->mount_opt &= ~OCFS2_MOUNT_COHERENCY_BUFFERED; break; case Opt_acl: mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL; mopt->mount_opt &= ~OCFS2_MOUNT_NO_POSIX_ACL; break; case Opt_noacl: mopt->mount_opt |= OCFS2_MOUNT_NO_POSIX_ACL; mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL; break; case Opt_resv_level: if (is_remount) break; if (match_int(&args[0], &option)) { status = 0; goto bail; } if (option >= OCFS2_MIN_RESV_LEVEL && option < OCFS2_MAX_RESV_LEVEL) mopt->resv_level = option; break; case Opt_dir_resv_level: if (is_remount) break; if (match_int(&args[0], &option)) { status = 0; goto bail; } if (option >= OCFS2_MIN_RESV_LEVEL && option < OCFS2_MAX_RESV_LEVEL) mopt->dir_resv_level = option; break; case Opt_journal_async_commit: mopt->mount_opt |= OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT; break; default: mlog(ML_ERROR, "Unrecognized mount option \"%s\" " "or missing value\n", p); status = 0; goto bail; } } if (user_stack == 0) { /* Ensure only one heartbeat mode */ tmp = mopt->mount_opt & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL | OCFS2_MOUNT_HB_NONE); if (hweight32(tmp) != 1) { mlog(ML_ERROR, "Invalid heartbeat mount options\n"); status = 0; goto bail; } } status = 1; bail: return status; } static int ocfs2_show_options(struct seq_file *s, struct dentry *root) { struct ocfs2_super *osb = OCFS2_SB(root->d_sb); unsigned long opts = osb->s_mount_opt; unsigned int local_alloc_megs; if (opts & (OCFS2_MOUNT_HB_LOCAL | OCFS2_MOUNT_HB_GLOBAL)) { seq_printf(s, ",_netdev"); if (opts & OCFS2_MOUNT_HB_LOCAL) seq_printf(s, ",%s", OCFS2_HB_LOCAL); else seq_printf(s, ",%s", OCFS2_HB_GLOBAL); } else seq_printf(s, ",%s", OCFS2_HB_NONE); if (opts & OCFS2_MOUNT_NOINTR) seq_printf(s, ",nointr"); if (opts & OCFS2_MOUNT_DATA_WRITEBACK) seq_printf(s, ",data=writeback"); else seq_printf(s, ",data=ordered"); if (opts & OCFS2_MOUNT_BARRIER) seq_printf(s, ",barrier=1"); if (opts & OCFS2_MOUNT_ERRORS_PANIC) seq_printf(s, ",errors=panic"); else if (opts & OCFS2_MOUNT_ERRORS_CONT) seq_printf(s, ",errors=continue"); else seq_printf(s, ",errors=remount-ro"); if (osb->preferred_slot != OCFS2_INVALID_SLOT) seq_printf(s, ",preferred_slot=%d", osb->preferred_slot); seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum); if (osb->osb_commit_interval) seq_printf(s, ",commit=%u", (unsigned) (osb->osb_commit_interval / HZ)); local_alloc_megs = osb->local_alloc_bits >> (20 - osb->s_clustersize_bits); if (local_alloc_megs != ocfs2_la_default_mb(osb)) seq_printf(s, ",localalloc=%d", local_alloc_megs); if (opts & OCFS2_MOUNT_LOCALFLOCKS) seq_printf(s, ",localflocks,"); if (osb->osb_cluster_stack[0]) seq_show_option(s, "cluster_stack", osb->osb_cluster_stack); if (opts & OCFS2_MOUNT_USRQUOTA) seq_printf(s, ",usrquota"); if (opts & OCFS2_MOUNT_GRPQUOTA) seq_printf(s, ",grpquota"); if (opts & OCFS2_MOUNT_COHERENCY_BUFFERED) seq_printf(s, ",coherency=buffered"); else seq_printf(s, ",coherency=full"); if (opts & OCFS2_MOUNT_NOUSERXATTR) seq_printf(s, ",nouser_xattr"); else seq_printf(s, ",user_xattr"); if (opts & OCFS2_MOUNT_INODE64) seq_printf(s, ",inode64"); if (opts & OCFS2_MOUNT_POSIX_ACL) seq_printf(s, ",acl"); else seq_printf(s, ",noacl"); if (osb->osb_resv_level != OCFS2_DEFAULT_RESV_LEVEL) seq_printf(s, ",resv_level=%d", osb->osb_resv_level); if (osb->osb_dir_resv_level != osb->osb_resv_level) seq_printf(s, ",dir_resv_level=%d", osb->osb_resv_level); if (opts & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT) seq_printf(s, ",journal_async_commit"); return 0; } static int __init ocfs2_init(void) { int status; status = init_ocfs2_uptodate_cache(); if (status < 0) goto out1; status = ocfs2_initialize_mem_caches(); if (status < 0) goto out2; ocfs2_debugfs_root = debugfs_create_dir("ocfs2", NULL); ocfs2_set_locking_protocol(); status = register_quota_format(&ocfs2_quota_format); if (status < 0) goto out3; status = register_filesystem(&ocfs2_fs_type); if (!status) return 0; unregister_quota_format(&ocfs2_quota_format); out3: debugfs_remove(ocfs2_debugfs_root); ocfs2_free_mem_caches(); out2: exit_ocfs2_uptodate_cache(); out1: mlog_errno(status); return status; } static void __exit ocfs2_exit(void) { unregister_quota_format(&ocfs2_quota_format); debugfs_remove(ocfs2_debugfs_root); ocfs2_free_mem_caches(); unregister_filesystem(&ocfs2_fs_type); exit_ocfs2_uptodate_cache(); } static void ocfs2_put_super(struct super_block *sb) { trace_ocfs2_put_super(sb); ocfs2_sync_blockdev(sb); ocfs2_dismount_volume(sb, 0); } static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf) { struct ocfs2_super *osb; u32 numbits, freebits; int status; struct ocfs2_dinode *bm_lock; struct buffer_head *bh = NULL; struct inode *inode = NULL; trace_ocfs2_statfs(dentry->d_sb, buf); osb = OCFS2_SB(dentry->d_sb); inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, OCFS2_INVALID_SLOT); if (!inode) { mlog(ML_ERROR, "failed to get bitmap inode\n"); status = -EIO; goto bail; } status = ocfs2_inode_lock(inode, &bh, 0); if (status < 0) { mlog_errno(status); goto bail; } bm_lock = (struct ocfs2_dinode *) bh->b_data; numbits = le32_to_cpu(bm_lock->id1.bitmap1.i_total); freebits = numbits - le32_to_cpu(bm_lock->id1.bitmap1.i_used); buf->f_type = OCFS2_SUPER_MAGIC; buf->f_bsize = dentry->d_sb->s_blocksize; buf->f_namelen = OCFS2_MAX_FILENAME_LEN; buf->f_blocks = ((sector_t) numbits) * (osb->s_clustersize >> osb->sb->s_blocksize_bits); buf->f_bfree = ((sector_t) freebits) * (osb->s_clustersize >> osb->sb->s_blocksize_bits); buf->f_bavail = buf->f_bfree; buf->f_files = numbits; buf->f_ffree = freebits; buf->f_fsid.val[0] = crc32_le(0, osb->uuid_str, OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL; buf->f_fsid.val[1] = crc32_le(0, osb->uuid_str + OCFS2_VOL_UUID_LEN, OCFS2_VOL_UUID_LEN) & 0xFFFFFFFFUL; brelse(bh); ocfs2_inode_unlock(inode, 0); status = 0; bail: iput(inode); if (status) mlog_errno(status); return status; } static void ocfs2_inode_init_once(void *data) { struct ocfs2_inode_info *oi = data; oi->ip_flags = 0; oi->ip_open_count = 0; spin_lock_init(&oi->ip_lock); ocfs2_extent_map_init(&oi->vfs_inode); INIT_LIST_HEAD(&oi->ip_io_markers); INIT_LIST_HEAD(&oi->ip_unwritten_list); oi->ip_dir_start_lookup = 0; init_rwsem(&oi->ip_alloc_sem); init_rwsem(&oi->ip_xattr_sem); mutex_init(&oi->ip_io_mutex); oi->ip_blkno = 0ULL; oi->ip_clusters = 0; oi->ip_next_orphan = NULL; ocfs2_resv_init_once(&oi->ip_la_data_resv); ocfs2_lock_res_init_once(&oi->ip_rw_lockres); ocfs2_lock_res_init_once(&oi->ip_inode_lockres); ocfs2_lock_res_init_once(&oi->ip_open_lockres); ocfs2_metadata_cache_init(INODE_CACHE(&oi->vfs_inode), &ocfs2_inode_caching_ops); inode_init_once(&oi->vfs_inode); } static int ocfs2_initialize_mem_caches(void) { ocfs2_inode_cachep = kmem_cache_create("ocfs2_inode_cache", sizeof(struct ocfs2_inode_info), 0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT| SLAB_ACCOUNT), ocfs2_inode_init_once); ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache", sizeof(struct ocfs2_dquot), 0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT, NULL); ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", sizeof(struct ocfs2_quota_chunk), 0, SLAB_RECLAIM_ACCOUNT, NULL); if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep || !ocfs2_qf_chunk_cachep) { kmem_cache_destroy(ocfs2_inode_cachep); kmem_cache_destroy(ocfs2_dquot_cachep); kmem_cache_destroy(ocfs2_qf_chunk_cachep); return -ENOMEM; } return 0; } static void ocfs2_free_mem_caches(void) { /* * Make sure all delayed rcu free inodes are flushed before we * destroy cache. */ rcu_barrier(); kmem_cache_destroy(ocfs2_inode_cachep); ocfs2_inode_cachep = NULL; kmem_cache_destroy(ocfs2_dquot_cachep); ocfs2_dquot_cachep = NULL; kmem_cache_destroy(ocfs2_qf_chunk_cachep); ocfs2_qf_chunk_cachep = NULL; } static int ocfs2_get_sector(struct super_block *sb, struct buffer_head **bh, int block, int sect_size) { if (!sb_set_blocksize(sb, sect_size)) { mlog(ML_ERROR, "unable to set blocksize\n"); return -EIO; } *bh = sb_getblk(sb, block); if (!*bh) { mlog_errno(-ENOMEM); return -ENOMEM; } lock_buffer(*bh); if (!buffer_dirty(*bh)) clear_buffer_uptodate(*bh); unlock_buffer(*bh); if (bh_read(*bh, 0) < 0) { mlog_errno(-EIO); brelse(*bh); *bh = NULL; return -EIO; } return 0; } static int ocfs2_mount_volume(struct super_block *sb) { int status = 0; struct ocfs2_super *osb = OCFS2_SB(sb); if (ocfs2_is_hard_readonly(osb)) goto out; mutex_init(&osb->obs_trim_fs_mutex); status = ocfs2_dlm_init(osb); if (status < 0) { mlog_errno(status); if (status == -EBADR && ocfs2_userspace_stack(osb)) mlog(ML_ERROR, "couldn't mount because cluster name on" " disk does not match the running cluster name.\n"); goto out; } status = ocfs2_super_lock(osb, 1); if (status < 0) { mlog_errno(status); goto out_dlm; } /* This will load up the node map and add ourselves to it. */ status = ocfs2_find_slot(osb); if (status < 0) { mlog_errno(status); goto out_super_lock; } /* load all node-local system inodes */ status = ocfs2_init_local_system_inodes(osb); if (status < 0) { mlog_errno(status); goto out_super_lock; } status = ocfs2_check_volume(osb); if (status < 0) { mlog_errno(status); goto out_system_inodes; } status = ocfs2_truncate_log_init(osb); if (status < 0) { mlog_errno(status); goto out_check_volume; } ocfs2_super_unlock(osb, 1); return 0; out_check_volume: ocfs2_free_replay_slots(osb); out_system_inodes: if (osb->local_alloc_state == OCFS2_LA_ENABLED) ocfs2_shutdown_local_alloc(osb); ocfs2_release_system_inodes(osb); /* before journal shutdown, we should release slot_info */ ocfs2_free_slot_info(osb); ocfs2_journal_shutdown(osb); out_super_lock: ocfs2_super_unlock(osb, 1); out_dlm: ocfs2_dlm_shutdown(osb, 0); out: return status; } static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err) { int tmp, hangup_needed = 0; struct ocfs2_super *osb = NULL; char nodestr[12]; trace_ocfs2_dismount_volume(sb); BUG_ON(!sb); osb = OCFS2_SB(sb); BUG_ON(!osb); /* Remove file check sysfs related directores/files, * and wait for the pending file check operations */ ocfs2_filecheck_remove_sysfs(osb); kset_unregister(osb->osb_dev_kset); /* Orphan scan should be stopped as early as possible */ ocfs2_orphan_scan_stop(osb); ocfs2_disable_quotas(osb); /* All dquots should be freed by now */ WARN_ON(!llist_empty(&osb->dquot_drop_list)); /* Wait for worker to be done with the work structure in osb */ cancel_work_sync(&osb->dquot_drop_work); ocfs2_shutdown_local_alloc(osb); ocfs2_truncate_log_shutdown(osb); /* This will disable recovery and flush any recovery work. */ ocfs2_recovery_exit(osb); ocfs2_sync_blockdev(sb); ocfs2_purge_refcount_trees(osb); /* No cluster connection means we've failed during mount, so skip * all the steps which depended on that to complete. */ if (osb->cconn) { tmp = ocfs2_super_lock(osb, 1); if (tmp < 0) { mlog_errno(tmp); return; } } if (osb->slot_num != OCFS2_INVALID_SLOT) ocfs2_put_slot(osb); if (osb->cconn) ocfs2_super_unlock(osb, 1); ocfs2_release_system_inodes(osb); ocfs2_journal_shutdown(osb); /* * If we're dismounting due to mount error, mount.ocfs2 will clean * up heartbeat. If we're a local mount, there is no heartbeat. * If we failed before we got a uuid_str yet, we can't stop * heartbeat. Otherwise, do it. */ if (!mnt_err && !ocfs2_mount_local(osb) && osb->uuid_str && !ocfs2_is_hard_readonly(osb)) hangup_needed = 1; ocfs2_dlm_shutdown(osb, hangup_needed); ocfs2_blockcheck_stats_debugfs_remove(&osb->osb_ecc_stats); debugfs_remove_recursive(osb->osb_debug_root); if (hangup_needed) ocfs2_cluster_hangup(osb->uuid_str, strlen(osb->uuid_str)); atomic_set(&osb->vol_state, VOLUME_DISMOUNTED); if (ocfs2_mount_local(osb)) snprintf(nodestr, sizeof(nodestr), "local"); else snprintf(nodestr, sizeof(nodestr), "%u", osb->node_num); printk(KERN_INFO "ocfs2: Unmounting device (%s) on (node %s)\n", osb->dev_str, nodestr); ocfs2_delete_osb(osb); kfree(osb); sb->s_dev = 0; sb->s_fs_info = NULL; } static int ocfs2_setup_osb_uuid(struct ocfs2_super *osb, const unsigned char *uuid, unsigned uuid_bytes) { int i, ret; char *ptr; BUG_ON(uuid_bytes != OCFS2_VOL_UUID_LEN); osb->uuid_str = kzalloc(OCFS2_VOL_UUID_LEN * 2 + 1, GFP_KERNEL); if (osb->uuid_str == NULL) return -ENOMEM; for (i = 0, ptr = osb->uuid_str; i < OCFS2_VOL_UUID_LEN; i++) { /* print with null */ ret = snprintf(ptr, 3, "%02X", uuid[i]); if (ret != 2) /* drop super cleans up */ return -EINVAL; /* then only advance past the last char */ ptr += 2; } return 0; } /* Make sure entire volume is addressable by our journal. Requires osb_clusters_at_boot to be valid and for the journal to have been initialized by ocfs2_journal_init(). */ static int ocfs2_journal_addressable(struct ocfs2_super *osb) { int status = 0; u64 max_block = ocfs2_clusters_to_blocks(osb->sb, osb->osb_clusters_at_boot) - 1; /* 32-bit block number is always OK. */ if (max_block <= (u32)~0ULL) goto out; /* Volume is "huge", so see if our journal is new enough to support it. */ if (!(OCFS2_HAS_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_COMPAT_JBD2_SB) && jbd2_journal_check_used_features(osb->journal->j_journal, 0, 0, JBD2_FEATURE_INCOMPAT_64BIT))) { mlog(ML_ERROR, "The journal cannot address the entire volume. " "Enable the 'block64' journal option with tunefs.ocfs2"); status = -EFBIG; goto out; } out: return status; } static int ocfs2_initialize_super(struct super_block *sb, struct buffer_head *bh, int sector_size, struct ocfs2_blockcheck_stats *stats) { int status; int i, cbits, bbits; struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; struct inode *inode = NULL; struct ocfs2_super *osb; u64 total_blocks; osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); if (!osb) { status = -ENOMEM; mlog_errno(status); goto out; } sb->s_fs_info = osb; sb->s_op = &ocfs2_sops; sb->s_d_op = &ocfs2_dentry_ops; sb->s_export_op = &ocfs2_export_ops; sb->s_qcop = &dquot_quotactl_sysfile_ops; sb->dq_op = &ocfs2_quota_operations; sb->s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP; sb->s_xattr = ocfs2_xattr_handlers; sb->s_time_gran = 1; sb->s_flags |= SB_NOATIME; /* this is needed to support O_LARGEFILE */ cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits); sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits); super_set_uuid(sb, di->id2.i_super.s_uuid, sizeof(di->id2.i_super.s_uuid)); osb->osb_dx_mask = (1 << (cbits - bbits)) - 1; for (i = 0; i < 3; i++) osb->osb_dx_seed[i] = le32_to_cpu(di->id2.i_super.s_dx_seed[i]); osb->osb_dx_seed[3] = le32_to_cpu(di->id2.i_super.s_uuid_hash); osb->sb = sb; osb->s_sectsize_bits = blksize_bits(sector_size); BUG_ON(!osb->s_sectsize_bits); spin_lock_init(&osb->dc_task_lock); init_waitqueue_head(&osb->dc_event); osb->dc_work_sequence = 0; osb->dc_wake_sequence = 0; INIT_LIST_HEAD(&osb->blocked_lock_list); osb->blocked_lock_count = 0; spin_lock_init(&osb->osb_lock); spin_lock_init(&osb->osb_xattr_lock); ocfs2_init_steal_slots(osb); mutex_init(&osb->system_file_mutex); atomic_set(&osb->alloc_stats.moves, 0); atomic_set(&osb->alloc_stats.local_data, 0); atomic_set(&osb->alloc_stats.bitmap_data, 0); atomic_set(&osb->alloc_stats.bg_allocs, 0); atomic_set(&osb->alloc_stats.bg_extends, 0); /* Copy the blockcheck stats from the superblock probe */ osb->osb_ecc_stats = *stats; ocfs2_init_node_maps(osb); snprintf(osb->dev_str, sizeof(osb->dev_str), "%u,%u", MAJOR(osb->sb->s_dev), MINOR(osb->sb->s_dev)); osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots); if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) { mlog(ML_ERROR, "Invalid number of node slots (%u)\n", osb->max_slots); status = -EINVAL; goto out; } ocfs2_orphan_scan_init(osb); status = ocfs2_recovery_init(osb); if (status) { mlog(ML_ERROR, "Unable to initialize recovery state\n"); mlog_errno(status); goto out; } init_waitqueue_head(&osb->checkpoint_event); osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM; osb->slot_num = OCFS2_INVALID_SLOT; osb->s_xattr_inline_size = le16_to_cpu( di->id2.i_super.s_xattr_inline_size); osb->local_alloc_state = OCFS2_LA_UNUSED; osb->local_alloc_bh = NULL; INIT_DELAYED_WORK(&osb->la_enable_wq, ocfs2_la_enable_worker); init_waitqueue_head(&osb->osb_mount_event); ocfs2_resmap_init(osb, &osb->osb_la_resmap); osb->vol_label = kmalloc(OCFS2_MAX_VOL_LABEL_LEN, GFP_KERNEL); if (!osb->vol_label) { mlog(ML_ERROR, "unable to alloc vol label\n"); status = -ENOMEM; goto out_recovery_map; } osb->slot_recovery_generations = kcalloc(osb->max_slots, sizeof(*osb->slot_recovery_generations), GFP_KERNEL); if (!osb->slot_recovery_generations) { status = -ENOMEM; mlog_errno(status); goto out_vol_label; } init_waitqueue_head(&osb->osb_wipe_event); osb->osb_orphan_wipes = kcalloc(osb->max_slots, sizeof(*osb->osb_orphan_wipes), GFP_KERNEL); if (!osb->osb_orphan_wipes) { status = -ENOMEM; mlog_errno(status); goto out_slot_recovery_gen; } osb->osb_rf_lock_tree = RB_ROOT; osb->s_feature_compat = le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_compat); osb->s_feature_ro_compat = le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_ro_compat); osb->s_feature_incompat = le32_to_cpu(OCFS2_RAW_SB(di)->s_feature_incompat); if ((i = OCFS2_HAS_INCOMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_INCOMPAT_SUPP))) { mlog(ML_ERROR, "couldn't mount because of unsupported " "optional features (%x).\n", i); status = -EINVAL; goto out_orphan_wipes; } if (!sb_rdonly(osb->sb) && (i = OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, ~OCFS2_FEATURE_RO_COMPAT_SUPP))) { mlog(ML_ERROR, "couldn't mount RDWR because of " "unsupported optional features (%x).\n", i); status = -EINVAL; goto out_orphan_wipes; } if (ocfs2_clusterinfo_valid(osb)) { /* * ci_stack and ci_cluster in ocfs2_cluster_info may not be null * terminated, so make sure no overflow happens here by using * memcpy. Destination strings will always be null terminated * because osb is allocated using kzalloc. */ osb->osb_stackflags = OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags; memcpy(osb->osb_cluster_stack, OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, OCFS2_STACK_LABEL_LEN); if (strlen(osb->osb_cluster_stack) != OCFS2_STACK_LABEL_LEN) { mlog(ML_ERROR, "couldn't mount because of an invalid " "cluster stack label (%s) \n", osb->osb_cluster_stack); status = -EINVAL; goto out_orphan_wipes; } memcpy(osb->osb_cluster_name, OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster, OCFS2_CLUSTER_NAME_LEN); } else { /* The empty string is identical with classic tools that * don't know about s_cluster_info. */ osb->osb_cluster_stack[0] = '\0'; } get_random_bytes(&osb->s_next_generation, sizeof(u32)); /* * FIXME * This should be done in ocfs2_journal_init(), but any inode * writes back operation will cause the filesystem to crash. */ status = ocfs2_journal_alloc(osb); if (status < 0) goto out_orphan_wipes; INIT_WORK(&osb->dquot_drop_work, ocfs2_drop_dquot_refs); init_llist_head(&osb->dquot_drop_list); /* get some pseudo constants for clustersize bits */ osb->s_clustersize_bits = le32_to_cpu(di->id2.i_super.s_clustersize_bits); osb->s_clustersize = 1 << osb->s_clustersize_bits; if (osb->s_clustersize < OCFS2_MIN_CLUSTERSIZE || osb->s_clustersize > OCFS2_MAX_CLUSTERSIZE) { mlog(ML_ERROR, "Volume has invalid cluster size (%d)\n", osb->s_clustersize); status = -EINVAL; goto out_journal; } total_blocks = ocfs2_clusters_to_blocks(osb->sb, le32_to_cpu(di->i_clusters)); status = generic_check_addressable(osb->sb->s_blocksize_bits, total_blocks); if (status) { mlog(ML_ERROR, "Volume too large " "to mount safely on this system"); status = -EFBIG; goto out_journal; } if (ocfs2_setup_osb_uuid(osb, di->id2.i_super.s_uuid, sizeof(di->id2.i_super.s_uuid))) { mlog(ML_ERROR, "Out of memory trying to setup our uuid.\n"); status = -ENOMEM; goto out_journal; } strscpy(osb->vol_label, di->id2.i_super.s_label, OCFS2_MAX_VOL_LABEL_LEN); osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); osb->first_cluster_group_blkno = le64_to_cpu(di->id2.i_super.s_first_cluster_group); osb->fs_generation = le32_to_cpu(di->i_fs_generation); osb->uuid_hash = le32_to_cpu(di->id2.i_super.s_uuid_hash); trace_ocfs2_initialize_super(osb->vol_label, osb->uuid_str, (unsigned long long)osb->root_blkno, (unsigned long long)osb->system_dir_blkno, osb->s_clustersize_bits); osb->osb_dlm_debug = ocfs2_new_dlm_debug(); if (!osb->osb_dlm_debug) { status = -ENOMEM; mlog_errno(status); goto out_uuid_str; } atomic_set(&osb->vol_state, VOLUME_INIT); /* load root, system_dir, and all global system inodes */ status = ocfs2_init_global_system_inodes(osb); if (status < 0) { mlog_errno(status); goto out_dlm_out; } /* * global bitmap */ inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, OCFS2_INVALID_SLOT); if (!inode) { status = -EINVAL; mlog_errno(status); goto out_system_inodes; } osb->bitmap_blkno = OCFS2_I(inode)->ip_blkno; osb->osb_clusters_at_boot = OCFS2_I(inode)->ip_clusters; iput(inode); osb->bitmap_cpg = ocfs2_group_bitmap_size(sb, 0, osb->s_feature_incompat) * 8; status = ocfs2_init_slot_info(osb); if (status < 0) { mlog_errno(status); goto out_system_inodes; } osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM); if (!osb->ocfs2_wq) { status = -ENOMEM; mlog_errno(status); goto out_slot_info; } return status; out_slot_info: ocfs2_free_slot_info(osb); out_system_inodes: ocfs2_release_system_inodes(osb); out_dlm_out: ocfs2_put_dlm_debug(osb->osb_dlm_debug); out_uuid_str: kfree(osb->uuid_str); out_journal: kfree(osb->journal); out_orphan_wipes: kfree(osb->osb_orphan_wipes); out_slot_recovery_gen: kfree(osb->slot_recovery_generations); out_vol_label: kfree(osb->vol_label); out_recovery_map: kfree(osb->recovery_map); out: kfree(osb); sb->s_fs_info = NULL; return status; } /* * will return: -EAGAIN if it is ok to keep searching for superblocks * -EINVAL if there is a bad superblock * 0 on success */ static int ocfs2_verify_volume(struct ocfs2_dinode *di, struct buffer_head *bh, u32 blksz, struct ocfs2_blockcheck_stats *stats) { int status = -EAGAIN; if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE, strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) { /* We have to do a raw check of the feature here */ if (le32_to_cpu(di->id2.i_super.s_feature_incompat) & OCFS2_FEATURE_INCOMPAT_META_ECC) { status = ocfs2_block_check_validate(bh->b_data, bh->b_size, &di->i_check, stats); if (status) goto out; } status = -EINVAL; if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) { mlog(ML_ERROR, "found superblock with incorrect block " "size: found %u, should be %u\n", 1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits), blksz); } else if (le16_to_cpu(di->id2.i_super.s_major_rev_level) != OCFS2_MAJOR_REV_LEVEL || le16_to_cpu(di->id2.i_super.s_minor_rev_level) != OCFS2_MINOR_REV_LEVEL) { mlog(ML_ERROR, "found superblock with bad version: " "found %u.%u, should be %u.%u\n", le16_to_cpu(di->id2.i_super.s_major_rev_level), le16_to_cpu(di->id2.i_super.s_minor_rev_level), OCFS2_MAJOR_REV_LEVEL, OCFS2_MINOR_REV_LEVEL); } else if (bh->b_blocknr != le64_to_cpu(di->i_blkno)) { mlog(ML_ERROR, "bad block number on superblock: " "found %llu, should be %llu\n", (unsigned long long)le64_to_cpu(di->i_blkno), (unsigned long long)bh->b_blocknr); } else if (le32_to_cpu(di->id2.i_super.s_clustersize_bits) < 12 || le32_to_cpu(di->id2.i_super.s_clustersize_bits) > 20) { mlog(ML_ERROR, "bad cluster size found: %u\n", 1 << le32_to_cpu(di->id2.i_super.s_clustersize_bits)); } else if (!le64_to_cpu(di->id2.i_super.s_root_blkno)) { mlog(ML_ERROR, "bad root_blkno: 0\n"); } else if (!le64_to_cpu(di->id2.i_super.s_system_dir_blkno)) { mlog(ML_ERROR, "bad system_dir_blkno: 0\n"); } else if (le16_to_cpu(di->id2.i_super.s_max_slots) > OCFS2_MAX_SLOTS) { mlog(ML_ERROR, "Superblock slots found greater than file system " "maximum: found %u, max %u\n", le16_to_cpu(di->id2.i_super.s_max_slots), OCFS2_MAX_SLOTS); } else { /* found it! */ status = 0; } } out: if (status && status != -EAGAIN) mlog_errno(status); return status; } static int ocfs2_check_volume(struct ocfs2_super *osb) { int status; int dirty; int local; struct ocfs2_dinode *local_alloc = NULL; /* only used if we * recover * ourselves. */ /* Init our journal object. */ status = ocfs2_journal_init(osb, &dirty); if (status < 0) { mlog(ML_ERROR, "Could not initialize journal!\n"); goto finally; } /* Now that journal has been initialized, check to make sure entire volume is addressable. */ status = ocfs2_journal_addressable(osb); if (status) goto finally; /* If the journal was unmounted cleanly then we don't want to * recover anything. Otherwise, journal_load will do that * dirty work for us :) */ if (!dirty) { status = ocfs2_journal_wipe(osb->journal, 0); if (status < 0) { mlog_errno(status); goto finally; } } else { printk(KERN_NOTICE "ocfs2: File system on device (%s) was not " "unmounted cleanly, recovering it.\n", osb->dev_str); } local = ocfs2_mount_local(osb); /* will play back anything left in the journal. */ status = ocfs2_journal_load(osb->journal, local, dirty); if (status < 0) { mlog(ML_ERROR, "ocfs2 journal load failed! %d\n", status); goto finally; } if (osb->s_mount_opt & OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT) jbd2_journal_set_features(osb->journal->j_journal, JBD2_FEATURE_COMPAT_CHECKSUM, 0, JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); else jbd2_journal_clear_features(osb->journal->j_journal, JBD2_FEATURE_COMPAT_CHECKSUM, 0, JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT); if (dirty) { /* recover my local alloc if we didn't unmount cleanly. */ status = ocfs2_begin_local_alloc_recovery(osb, osb->slot_num, &local_alloc); if (status < 0) { mlog_errno(status); goto finally; } /* we complete the recovery process after we've marked * ourselves as mounted. */ } status = ocfs2_load_local_alloc(osb); if (status < 0) { mlog_errno(status); goto finally; } if (dirty) { /* Recovery will be completed after we've mounted the * rest of the volume. */ osb->local_alloc_copy = local_alloc; local_alloc = NULL; } /* go through each journal, trylock it and if you get the * lock, and it's marked as dirty, set the bit in the recover * map and launch a recovery thread for it. */ status = ocfs2_mark_dead_nodes(osb); if (status < 0) { mlog_errno(status); goto finally; } status = ocfs2_compute_replay_slots(osb); if (status < 0) mlog_errno(status); finally: kfree(local_alloc); if (status) mlog_errno(status); return status; } /* * The routine gets called from dismount or close whenever a dismount on * volume is requested and the osb open count becomes 1. * It will remove the osb from the global list and also free up all the * initialized resources and fileobject. */ static void ocfs2_delete_osb(struct ocfs2_super *osb) { /* This function assumes that the caller has the main osb resource */ /* ocfs2_initializer_super have already created this workqueue */ if (osb->ocfs2_wq) destroy_workqueue(osb->ocfs2_wq); ocfs2_free_slot_info(osb); kfree(osb->osb_orphan_wipes); kfree(osb->slot_recovery_generations); /* FIXME * This belongs in journal shutdown, but because we have to * allocate osb->journal at the middle of ocfs2_initialize_super(), * we free it here. */ kfree(osb->journal); kfree(osb->local_alloc_copy); kfree(osb->uuid_str); kfree(osb->vol_label); ocfs2_put_dlm_debug(osb->osb_dlm_debug); memset(osb, 0, sizeof(struct ocfs2_super)); } /* Depending on the mount option passed, perform one of the following: * Put OCFS2 into a readonly state (default) * Return EIO so that only the process errs * Fix the error as if fsck.ocfs2 -y * panic */ static int ocfs2_handle_error(struct super_block *sb) { struct ocfs2_super *osb = OCFS2_SB(sb); int rv = 0; ocfs2_set_osb_flag(osb, OCFS2_OSB_ERROR_FS); pr_crit("On-disk corruption discovered. " "Please run fsck.ocfs2 once the filesystem is unmounted.\n"); if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_PANIC) { panic("OCFS2: (device %s): panic forced after error\n", sb->s_id); } else if (osb->s_mount_opt & OCFS2_MOUNT_ERRORS_CONT) { pr_crit("OCFS2: Returning error to the calling process.\n"); rv = -EIO; } else { /* default option */ rv = -EROFS; if (sb_rdonly(sb) && (ocfs2_is_soft_readonly(osb) || ocfs2_is_hard_readonly(osb))) return rv; pr_crit("OCFS2: File system is now read-only.\n"); sb->s_flags |= SB_RDONLY; ocfs2_set_ro_flag(osb, 0); } return rv; } int __ocfs2_error(struct super_block *sb, const char *function, const char *fmt, ...) { struct va_format vaf; va_list args; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; /* Not using mlog here because we want to show the actual * function the error came from. */ printk(KERN_CRIT "OCFS2: ERROR (device %s): %s: %pV", sb->s_id, function, &vaf); va_end(args); return ocfs2_handle_error(sb); } /* Handle critical errors. This is intentionally more drastic than * ocfs2_handle_error, so we only use for things like journal errors, * etc. */ void __ocfs2_abort(struct super_block *sb, const char *function, const char *fmt, ...) { struct va_format vaf; va_list args; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; printk(KERN_CRIT "OCFS2: abort (device %s): %s: %pV", sb->s_id, function, &vaf); va_end(args); /* We don't have the cluster support yet to go straight to * hard readonly in here. Until then, we want to keep * ocfs2_abort() so that we can at least mark critical * errors. * * TODO: This should abort the journal and alert other nodes * that our slot needs recovery. */ /* Force a panic(). This stinks, but it's better than letting * things continue without having a proper hard readonly * here. */ if (!ocfs2_mount_local(OCFS2_SB(sb))) OCFS2_SB(sb)->s_mount_opt |= OCFS2_MOUNT_ERRORS_PANIC; ocfs2_handle_error(sb); } /* * Void signal blockers, because in-kernel sigprocmask() only fails * when SIG_* is wrong. */ void ocfs2_block_signals(sigset_t *oldset) { int rc; sigset_t blocked; sigfillset(&blocked); rc = sigprocmask(SIG_BLOCK, &blocked, oldset); BUG_ON(rc); } void ocfs2_unblock_signals(sigset_t *oldset) { int rc = sigprocmask(SIG_SETMASK, oldset, NULL); BUG_ON(rc); } module_init(ocfs2_init); module_exit(ocfs2_exit);
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1