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2635 lines
69 KiB
2635 lines
69 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* -*- mode: c; c-basic-offset: 8; -*- |
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* vim: noexpandtab sw=8 ts=8 sts=0: |
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* |
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* super.c |
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* |
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* load/unload driver, mount/dismount volumes |
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* |
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* Copyright (C) 2002, 2004 Oracle. All rights reserved. |
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*/ |
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|
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#include <linux/module.h> |
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#include <linux/fs.h> |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/highmem.h> |
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#include <linux/init.h> |
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#include <linux/random.h> |
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#include <linux/statfs.h> |
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#include <linux/moduleparam.h> |
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#include <linux/blkdev.h> |
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#include <linux/socket.h> |
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#include <linux/inet.h> |
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#include <linux/parser.h> |
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#include <linux/crc32.h> |
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#include <linux/debugfs.h> |
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#include <linux/mount.h> |
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#include <linux/seq_file.h> |
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#include <linux/quotaops.h> |
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#include <linux/cleancache.h> |
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#include <linux/signal.h> |
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|
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#define CREATE_TRACE_POINTS |
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#include "ocfs2_trace.h" |
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|
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#include <cluster/masklog.h> |
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|
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#include "ocfs2.h" |
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|
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/* this should be the only file to include a version 1 header */ |
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#include "ocfs1_fs_compat.h" |
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|
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#include "alloc.h" |
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#include "aops.h" |
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#include "blockcheck.h" |
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#include "dlmglue.h" |
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#include "export.h" |
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#include "extent_map.h" |
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#include "heartbeat.h" |
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#include "inode.h" |
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#include "journal.h" |
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#include "localalloc.h" |
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#include "namei.h" |
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#include "slot_map.h" |
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#include "super.h" |
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#include "sysfile.h" |
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#include "uptodate.h" |
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#include "xattr.h" |
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#include "quota.h" |
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#include "refcounttree.h" |
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#include "suballoc.h" |
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|
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#include "buffer_head_io.h" |
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#include "filecheck.h" |
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|
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static struct kmem_cache *ocfs2_inode_cachep; |
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struct kmem_cache *ocfs2_dquot_cachep; |
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struct kmem_cache *ocfs2_qf_chunk_cachep; |
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|
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static struct dentry *ocfs2_debugfs_root; |
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MODULE_AUTHOR("Oracle"); |
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MODULE_LICENSE("GPL"); |
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MODULE_DESCRIPTION("OCFS2 cluster file system"); |
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|
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struct mount_options |
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{ |
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unsigned long commit_interval; |
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unsigned long mount_opt; |
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unsigned int atime_quantum; |
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unsigned short slot; |
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int localalloc_opt; |
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unsigned int resv_level; |
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int dir_resv_level; |
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char cluster_stack[OCFS2_STACK_LABEL_LEN + 1]; |
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}; |
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|
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static int ocfs2_parse_options(struct super_block *sb, char *options, |
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struct mount_options *mopt, |
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int is_remount); |
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static int ocfs2_check_set_options(struct super_block *sb, |
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struct mount_options *options); |
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static int ocfs2_show_options(struct seq_file *s, struct dentry *root); |
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static void ocfs2_put_super(struct super_block *sb); |
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static int ocfs2_mount_volume(struct super_block *sb); |
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static int ocfs2_remount(struct super_block *sb, int *flags, char *data); |
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static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err); |
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static int ocfs2_initialize_mem_caches(void); |
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static void ocfs2_free_mem_caches(void); |
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static void ocfs2_delete_osb(struct ocfs2_super *osb); |
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|
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static int ocfs2_statfs(struct dentry *dentry, struct kstatfs *buf); |
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|
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static int ocfs2_sync_fs(struct super_block *sb, int wait); |
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|
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static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb); |
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static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb); |
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static void ocfs2_release_system_inodes(struct ocfs2_super *osb); |
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static int ocfs2_check_volume(struct ocfs2_super *osb); |
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static int ocfs2_verify_volume(struct ocfs2_dinode *di, |
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struct buffer_head *bh, |
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u32 sectsize, |
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struct ocfs2_blockcheck_stats *stats); |
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static int ocfs2_initialize_super(struct super_block *sb, |
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struct buffer_head *bh, |
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int sector_size, |
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struct ocfs2_blockcheck_stats *stats); |
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static int ocfs2_get_sector(struct super_block *sb, |
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struct buffer_head **bh, |
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int block, |
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int sect_size); |
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static struct inode *ocfs2_alloc_inode(struct super_block *sb); |
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static void ocfs2_free_inode(struct inode *inode); |
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static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend); |
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static int ocfs2_enable_quotas(struct ocfs2_super *osb); |
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static void ocfs2_disable_quotas(struct ocfs2_super *osb); |
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|
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static struct dquot **ocfs2_get_dquots(struct inode *inode) |
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{ |
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return OCFS2_I(inode)->i_dquot; |
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} |
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|
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static const struct super_operations ocfs2_sops = { |
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.statfs = ocfs2_statfs, |
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.alloc_inode = ocfs2_alloc_inode, |
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.free_inode = ocfs2_free_inode, |
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.drop_inode = ocfs2_drop_inode, |
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.evict_inode = ocfs2_evict_inode, |
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.sync_fs = ocfs2_sync_fs, |
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.put_super = ocfs2_put_super, |
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.remount_fs = ocfs2_remount, |
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.show_options = ocfs2_show_options, |
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.quota_read = ocfs2_quota_read, |
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.quota_write = ocfs2_quota_write, |
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.get_dquots = ocfs2_get_dquots, |
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}; |
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|
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enum { |
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Opt_barrier, |
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Opt_err_panic, |
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Opt_err_ro, |
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Opt_intr, |
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Opt_nointr, |
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Opt_hb_none, |
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Opt_hb_local, |
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Opt_hb_global, |
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Opt_data_ordered, |
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Opt_data_writeback, |
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Opt_atime_quantum, |
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Opt_slot, |
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Opt_commit, |
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Opt_localalloc, |
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Opt_localflocks, |
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Opt_stack, |
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Opt_user_xattr, |
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Opt_nouser_xattr, |
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Opt_inode64, |
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Opt_acl, |
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Opt_noacl, |
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Opt_usrquota, |
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Opt_grpquota, |
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Opt_coherency_buffered, |
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Opt_coherency_full, |
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Opt_resv_level, |
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Opt_dir_resv_level, |
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Opt_journal_async_commit, |
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Opt_err_cont, |
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Opt_nocluster, |
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Opt_err, |
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}; |
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|
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static const match_table_t tokens = { |
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{Opt_barrier, "barrier=%u"}, |
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{Opt_err_panic, "errors=panic"}, |
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{Opt_err_ro, "errors=remount-ro"}, |
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{Opt_intr, "intr"}, |
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{Opt_nointr, "nointr"}, |
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{Opt_hb_none, OCFS2_HB_NONE}, |
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{Opt_hb_local, OCFS2_HB_LOCAL}, |
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{Opt_hb_global, OCFS2_HB_GLOBAL}, |
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{Opt_data_ordered, "data=ordered"}, |
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{Opt_data_writeback, "data=writeback"}, |
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{Opt_atime_quantum, "atime_quantum=%u"}, |
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{Opt_slot, "preferred_slot=%u"}, |
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{Opt_commit, "commit=%u"}, |
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{Opt_localalloc, "localalloc=%d"}, |
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{Opt_localflocks, "localflocks"}, |
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{Opt_stack, "cluster_stack=%s"}, |
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{Opt_user_xattr, "user_xattr"}, |
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{Opt_nouser_xattr, "nouser_xattr"}, |
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{Opt_inode64, "inode64"}, |
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{Opt_acl, "acl"}, |
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{Opt_noacl, "noacl"}, |
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{Opt_usrquota, "usrquota"}, |
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{Opt_grpquota, "grpquota"}, |
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{Opt_coherency_buffered, "coherency=buffered"}, |
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{Opt_coherency_full, "coherency=full"}, |
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{Opt_resv_level, "resv_level=%u"}, |
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{Opt_dir_resv_level, "dir_resv_level=%u"}, |
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{Opt_journal_async_commit, "journal_async_commit"}, |
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{Opt_err_cont, "errors=continue"}, |
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{Opt_nocluster, "nocluster"}, |
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{Opt_err, NULL} |
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}; |
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|
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#ifdef CONFIG_DEBUG_FS |
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static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len) |
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{ |
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struct ocfs2_cluster_connection *cconn = osb->cconn; |
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struct ocfs2_recovery_map *rm = osb->recovery_map; |
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struct ocfs2_orphan_scan *os = &osb->osb_orphan_scan; |
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int i, out = 0; |
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unsigned long flags; |
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|
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out += scnprintf(buf + out, len - out, |
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"%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n", |
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"Device", osb->dev_str, osb->uuid_str, |
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osb->fs_generation, osb->vol_label); |
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|
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out += scnprintf(buf + out, len - out, |
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"%10s => State: %d Flags: 0x%lX\n", "Volume", |
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atomic_read(&osb->vol_state), osb->osb_flags); |
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|
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out += scnprintf(buf + out, len - out, |
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"%10s => Block: %lu Cluster: %d\n", "Sizes", |
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osb->sb->s_blocksize, osb->s_clustersize); |
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|
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out += scnprintf(buf + out, len - out, |
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"%10s => Compat: 0x%X Incompat: 0x%X " |
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"ROcompat: 0x%X\n", |
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"Features", osb->s_feature_compat, |
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osb->s_feature_incompat, osb->s_feature_ro_compat); |
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|
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out += scnprintf(buf + out, len - out, |
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"%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount", |
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osb->s_mount_opt, osb->s_atime_quantum); |
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|
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if (cconn) { |
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out += scnprintf(buf + out, len - out, |
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"%10s => Stack: %s Name: %*s " |
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"Version: %d.%d\n", "Cluster", |
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(*osb->osb_cluster_stack == '\0' ? |
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"o2cb" : osb->osb_cluster_stack), |
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cconn->cc_namelen, cconn->cc_name, |
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cconn->cc_version.pv_major, |
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cconn->cc_version.pv_minor); |
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} |
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|
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spin_lock_irqsave(&osb->dc_task_lock, flags); |
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out += scnprintf(buf + out, len - out, |
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"%10s => Pid: %d Count: %lu WakeSeq: %lu " |
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"WorkSeq: %lu\n", "DownCnvt", |
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(osb->dc_task ? task_pid_nr(osb->dc_task) : -1), |
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osb->blocked_lock_count, osb->dc_wake_sequence, |
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osb->dc_work_sequence); |
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spin_unlock_irqrestore(&osb->dc_task_lock, flags); |
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|
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spin_lock(&osb->osb_lock); |
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out += scnprintf(buf + out, len - out, "%10s => Pid: %d Nodes:", |
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"Recovery", |
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(osb->recovery_thread_task ? |
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task_pid_nr(osb->recovery_thread_task) : -1)); |
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if (rm->rm_used == 0) |
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out += scnprintf(buf + out, len - out, " None\n"); |
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else { |
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for (i = 0; i < rm->rm_used; i++) |
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out += scnprintf(buf + out, len - out, " %d", |
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rm->rm_entries[i]); |
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out += scnprintf(buf + out, len - out, "\n"); |
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} |
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spin_unlock(&osb->osb_lock); |
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|
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out += scnprintf(buf + out, len - out, |
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"%10s => Pid: %d Interval: %lu\n", "Commit", |
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(osb->commit_task ? task_pid_nr(osb->commit_task) : -1), |
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osb->osb_commit_interval); |
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|
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out += scnprintf(buf + out, len - out, |
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"%10s => State: %d TxnId: %lu NumTxns: %d\n", |
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"Journal", osb->journal->j_state, |
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osb->journal->j_trans_id, |
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atomic_read(&osb->journal->j_num_trans)); |
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|
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out += scnprintf(buf + out, len - out, |
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"%10s => GlobalAllocs: %d LocalAllocs: %d " |
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"SubAllocs: %d LAWinMoves: %d SAExtends: %d\n", |
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"Stats", |
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atomic_read(&osb->alloc_stats.bitmap_data), |
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atomic_read(&osb->alloc_stats.local_data), |
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atomic_read(&osb->alloc_stats.bg_allocs), |
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atomic_read(&osb->alloc_stats.moves), |
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atomic_read(&osb->alloc_stats.bg_extends)); |
|
|
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out += scnprintf(buf + out, len - out, |
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"%10s => State: %u Descriptor: %llu Size: %u bits " |
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"Default: %u bits\n", |
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"LocalAlloc", osb->local_alloc_state, |
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(unsigned long long)osb->la_last_gd, |
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osb->local_alloc_bits, osb->local_alloc_default_bits); |
|
|
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spin_lock(&osb->osb_lock); |
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out += scnprintf(buf + out, len - out, |
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"%10s => InodeSlot: %d StolenInodes: %d, " |
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"MetaSlot: %d StolenMeta: %d\n", "Steal", |
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osb->s_inode_steal_slot, |
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atomic_read(&osb->s_num_inodes_stolen), |
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osb->s_meta_steal_slot, |
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atomic_read(&osb->s_num_meta_stolen)); |
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spin_unlock(&osb->osb_lock); |
|
|
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out += scnprintf(buf + out, len - out, "OrphanScan => "); |
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out += scnprintf(buf + out, len - out, "Local: %u Global: %u ", |
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os->os_count, os->os_seqno); |
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out += scnprintf(buf + out, len - out, " Last Scan: "); |
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if (atomic_read(&os->os_state) == ORPHAN_SCAN_INACTIVE) |
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out += scnprintf(buf + out, len - out, "Disabled\n"); |
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else |
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out += scnprintf(buf + out, len - out, "%lu seconds ago\n", |
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(unsigned long)(ktime_get_seconds() - os->os_scantime)); |
|
|
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out += scnprintf(buf + out, len - out, "%10s => %3s %10s\n", |
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"Slots", "Num", "RecoGen"); |
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for (i = 0; i < osb->max_slots; ++i) { |
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out += scnprintf(buf + out, len - out, |
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"%10s %c %3d %10d\n", |
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" ", |
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(i == osb->slot_num ? '*' : ' '), |
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i, osb->slot_recovery_generations[i]); |
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} |
|
|
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return out; |
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} |
|
|
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static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) |
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{ |
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struct ocfs2_super *osb = inode->i_private; |
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char *buf = NULL; |
|
|
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buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
|
if (!buf) |
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goto bail; |
|
|
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i_size_write(inode, ocfs2_osb_dump(osb, buf, PAGE_SIZE)); |
|
|
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file->private_data = buf; |
|
|
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return 0; |
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bail: |
|
return -ENOMEM; |
|
} |
|
|
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static int ocfs2_debug_release(struct inode *inode, struct file *file) |
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{ |
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kfree(file->private_data); |
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return 0; |
|
} |
|
|
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static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, |
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size_t nbytes, loff_t *ppos) |
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{ |
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return simple_read_from_buffer(buf, nbytes, ppos, file->private_data, |
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i_size_read(file->f_mapping->host)); |
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} |
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#else |
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static int ocfs2_osb_debug_open(struct inode *inode, struct file *file) |
|
{ |
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return 0; |
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} |
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static int ocfs2_debug_release(struct inode *inode, struct file *file) |
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{ |
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return 0; |
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} |
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static ssize_t ocfs2_debug_read(struct file *file, char __user *buf, |
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size_t nbytes, loff_t *ppos) |
|
{ |
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return 0; |
|
} |
|
#endif /* CONFIG_DEBUG_FS */ |
|
|
|
static const struct file_operations ocfs2_osb_debug_fops = { |
|
.open = ocfs2_osb_debug_open, |
|
.release = ocfs2_debug_release, |
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.read = ocfs2_debug_read, |
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.llseek = generic_file_llseek, |
|
}; |
|
|
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static int ocfs2_sync_fs(struct super_block *sb, int wait) |
|
{ |
|
int status; |
|
tid_t target; |
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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 = kmem_cache_alloc(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_NOCLUSTER; |
|
if ((osb->s_mount_opt & tmp) != (parsed_options.mount_opt & tmp)) { |
|
ret = -EINVAL; |
|
mlog(ML_ERROR, "Cannot change nocluster option on remount\n"); |
|
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) && |
|
!(osb->s_mount_opt & OCFS2_MOUNT_NOCLUSTER) && |
|
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; |
|
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 read_super_error; |
|
} |
|
|
|
/* probe for superblock */ |
|
status = ocfs2_sb_probe(sb, &bh, §or_size, &stats); |
|
if (status < 0) { |
|
mlog(ML_ERROR, "superblock probe failed!\n"); |
|
goto read_super_error; |
|
} |
|
|
|
status = ocfs2_initialize_super(sb, bh, sector_size, &stats); |
|
osb = OCFS2_SB(sb); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto read_super_error; |
|
} |
|
brelse(bh); |
|
bh = NULL; |
|
|
|
if (!ocfs2_check_set_options(sb, &parsed_options)) { |
|
status = -EINVAL; |
|
goto read_super_error; |
|
} |
|
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 read_super_error; |
|
|
|
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 read_super_error; |
|
} |
|
|
|
/* 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 read_super_error; |
|
} |
|
|
|
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"); |
|
else |
|
mlog_errno(status); |
|
goto read_super_error; |
|
} |
|
|
|
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) { |
|
mlog_errno(status); |
|
goto read_super_error; |
|
} |
|
|
|
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_blockcheck_stats_debugfs_install( &osb->osb_ecc_stats, |
|
osb->osb_debug_root); |
|
|
|
status = ocfs2_mount_volume(sb); |
|
if (status < 0) |
|
goto read_super_error; |
|
|
|
if (osb->root_inode) |
|
inode = igrab(osb->root_inode); |
|
|
|
if (!inode) { |
|
status = -EIO; |
|
mlog_errno(status); |
|
goto read_super_error; |
|
} |
|
|
|
root = d_make_root(inode); |
|
if (!root) { |
|
status = -ENOMEM; |
|
mlog_errno(status); |
|
goto read_super_error; |
|
} |
|
|
|
sb->s_root = root; |
|
|
|
ocfs2_complete_mount_recovery(osb); |
|
|
|
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 read_super_error; |
|
} |
|
|
|
/* 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 read_super_error; |
|
} |
|
|
|
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"); |
|
|
|
if ((osb->s_mount_opt & OCFS2_MOUNT_NOCLUSTER) && |
|
!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT)) |
|
printk(KERN_NOTICE "ocfs2: The shared device (%s) is mounted " |
|
"without cluster aware mode.\n", osb->dev_str); |
|
|
|
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; |
|
|
|
read_super_error: |
|
brelse(bh); |
|
|
|
if (status) |
|
mlog_errno(status); |
|
|
|
if (osb) { |
|
atomic_set(&osb->vol_state, VOLUME_DISABLED); |
|
wake_up(&osb->osb_mount_event); |
|
ocfs2_dismount_volume(sb, 1); |
|
} |
|
|
|
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; |
|
case Opt_nocluster: |
|
mopt->mount_opt |= OCFS2_MOUNT_NOCLUSTER; |
|
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_n(s, "cluster_stack", osb->osb_cluster_stack, |
|
OCFS2_STACK_LABEL_LEN); |
|
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"); |
|
|
|
if (opts & OCFS2_MOUNT_NOCLUSTER) |
|
seq_printf(s, ",nocluster"); |
|
|
|
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_MEM_SPREAD|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| |
|
SLAB_MEM_SPREAD), |
|
NULL); |
|
ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache", |
|
sizeof(struct ocfs2_quota_chunk), |
|
0, |
|
(SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), |
|
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); |
|
ll_rw_block(REQ_OP_READ, 0, 1, bh); |
|
wait_on_buffer(*bh); |
|
if (!buffer_uptodate(*bh)) { |
|
mlog_errno(-EIO); |
|
brelse(*bh); |
|
*bh = NULL; |
|
return -EIO; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int ocfs2_mount_volume(struct super_block *sb) |
|
{ |
|
int status = 0; |
|
int unlock_super = 0; |
|
struct ocfs2_super *osb = OCFS2_SB(sb); |
|
|
|
if (ocfs2_is_hard_readonly(osb)) |
|
goto leave; |
|
|
|
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 leave; |
|
} |
|
|
|
status = ocfs2_super_lock(osb, 1); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto leave; |
|
} |
|
unlock_super = 1; |
|
|
|
/* This will load up the node map and add ourselves to it. */ |
|
status = ocfs2_find_slot(osb); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto leave; |
|
} |
|
|
|
/* load all node-local system inodes */ |
|
status = ocfs2_init_local_system_inodes(osb); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto leave; |
|
} |
|
|
|
status = ocfs2_check_volume(osb); |
|
if (status < 0) { |
|
mlog_errno(status); |
|
goto leave; |
|
} |
|
|
|
status = ocfs2_truncate_log_init(osb); |
|
if (status < 0) |
|
mlog_errno(status); |
|
|
|
leave: |
|
if (unlock_super) |
|
ocfs2_super_unlock(osb, 1); |
|
|
|
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_journal_shutdown(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); |
|
|
|
/* |
|
* 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; |
|
|
|
if (osb->cconn) |
|
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_journal *journal; |
|
struct ocfs2_super *osb; |
|
u64 total_blocks; |
|
|
|
osb = kzalloc(sizeof(struct ocfs2_super), GFP_KERNEL); |
|
if (!osb) { |
|
status = -ENOMEM; |
|
mlog_errno(status); |
|
goto bail; |
|
} |
|
|
|
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); |
|
memcpy(&sb->s_uuid, 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 bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
|
|
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); |
|
|
|
status = ocfs2_resmap_init(osb, &osb->osb_la_resmap); |
|
if (status) { |
|
mlog_errno(status); |
|
goto bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
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 bail; |
|
} |
|
|
|
if (ocfs2_clusterinfo_valid(osb)) { |
|
osb->osb_stackflags = |
|
OCFS2_RAW_SB(di)->s_cluster_info.ci_stackflags; |
|
strlcpy(osb->osb_cluster_stack, |
|
OCFS2_RAW_SB(di)->s_cluster_info.ci_stack, |
|
OCFS2_STACK_LABEL_LEN + 1); |
|
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 bail; |
|
} |
|
strlcpy(osb->osb_cluster_name, |
|
OCFS2_RAW_SB(di)->s_cluster_info.ci_cluster, |
|
OCFS2_CLUSTER_NAME_LEN + 1); |
|
} 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 unknown |
|
* ordering issues will cause the filesystem to crash. |
|
* If anyone wants to figure out what part of the code |
|
* refers to osb->journal before ocfs2_journal_init() is run, |
|
* be my guest. |
|
*/ |
|
/* initialize our journal structure */ |
|
|
|
journal = kzalloc(sizeof(struct ocfs2_journal), GFP_KERNEL); |
|
if (!journal) { |
|
mlog(ML_ERROR, "unable to alloc journal\n"); |
|
status = -ENOMEM; |
|
goto bail; |
|
} |
|
osb->journal = journal; |
|
journal->j_osb = osb; |
|
|
|
atomic_set(&journal->j_num_trans, 0); |
|
init_rwsem(&journal->j_trans_barrier); |
|
init_waitqueue_head(&journal->j_checkpointed); |
|
spin_lock_init(&journal->j_lock); |
|
journal->j_trans_id = (unsigned long) 1; |
|
INIT_LIST_HEAD(&journal->j_la_cleanups); |
|
INIT_WORK(&journal->j_recovery_work, ocfs2_complete_recovery); |
|
journal->j_state = OCFS2_JOURNAL_FREE; |
|
|
|
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 bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
|
|
strlcpy(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 bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
|
|
/* |
|
* global bitmap |
|
*/ |
|
inode = ocfs2_get_system_file_inode(osb, GLOBAL_BITMAP_SYSTEM_INODE, |
|
OCFS2_INVALID_SLOT); |
|
if (!inode) { |
|
status = -EINVAL; |
|
mlog_errno(status); |
|
goto bail; |
|
} |
|
|
|
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 bail; |
|
} |
|
cleancache_init_shared_fs(sb); |
|
|
|
osb->ocfs2_wq = alloc_ordered_workqueue("ocfs2_wq", WQ_MEM_RECLAIM); |
|
if (!osb->ocfs2_wq) { |
|
status = -ENOMEM; |
|
mlog_errno(status); |
|
} |
|
|
|
bail: |
|
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->journal, &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 start of ocfs2_initialize_osb(), |
|
* 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);
|
|
|