| /* -*- mode: c; c-basic-offset: 8; -*- |
| * vim: noexpandtab sw=8 ts=8 sts=0: |
| * |
| * inode.h |
| * |
| * Function prototypes |
| * |
| * Copyright (C) 2002, 2004 Oracle. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public |
| * License along with this program; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 021110-1307, USA. |
| */ |
| |
| #ifndef OCFS2_INODE_H |
| #define OCFS2_INODE_H |
| |
| #include "extent_map.h" |
| |
| /* OCFS2 Inode Private Data */ |
| struct ocfs2_inode_info |
| { |
| u64 ip_blkno; |
| |
| struct ocfs2_lock_res ip_rw_lockres; |
| struct ocfs2_lock_res ip_inode_lockres; |
| struct ocfs2_lock_res ip_open_lockres; |
| |
| /* protects allocation changes on this inode. */ |
| struct rw_semaphore ip_alloc_sem; |
| |
| /* protects extended attribute changes on this inode */ |
| struct rw_semaphore ip_xattr_sem; |
| |
| /* These fields are protected by ip_lock */ |
| spinlock_t ip_lock; |
| u32 ip_open_count; |
| u32 ip_clusters; |
| struct list_head ip_io_markers; |
| |
| struct mutex ip_io_mutex; |
| |
| u32 ip_flags; /* see below */ |
| u32 ip_attr; /* inode attributes */ |
| u16 ip_dyn_features; |
| |
| /* protected by recovery_lock. */ |
| struct inode *ip_next_orphan; |
| |
| u32 ip_dir_start_lookup; |
| |
| struct ocfs2_caching_info ip_metadata_cache; |
| |
| struct ocfs2_extent_map ip_extent_map; |
| |
| struct inode vfs_inode; |
| struct jbd2_inode ip_jinode; |
| |
| /* Only valid if the inode is the dir. */ |
| u32 ip_last_used_slot; |
| u64 ip_last_used_group; |
| }; |
| |
| /* |
| * Flags for the ip_flags field |
| */ |
| /* System file inodes */ |
| #define OCFS2_INODE_SYSTEM_FILE 0x00000001 |
| #define OCFS2_INODE_JOURNAL 0x00000002 |
| #define OCFS2_INODE_BITMAP 0x00000004 |
| /* This inode has been wiped from disk */ |
| #define OCFS2_INODE_DELETED 0x00000008 |
| /* Another node is deleting, so our delete is a nop */ |
| #define OCFS2_INODE_SKIP_DELETE 0x00000010 |
| /* Has the inode been orphaned on another node? |
| * |
| * This hints to ocfs2_drop_inode that it should clear i_nlink before |
| * continuing. |
| * |
| * We *only* set this on unlink vote from another node. If the inode |
| * was locally orphaned, then we're sure of the state and don't need |
| * to twiddle i_nlink later - it's either zero or not depending on |
| * whether our unlink succeeded. Otherwise we got this from a node |
| * whose intention was to orphan the inode, however he may have |
| * crashed, failed etc, so we let ocfs2_drop_inode zero the value and |
| * rely on ocfs2_delete_inode to sort things out under the proper |
| * cluster locks. |
| */ |
| #define OCFS2_INODE_MAYBE_ORPHANED 0x00000020 |
| /* Does someone have the file open O_DIRECT */ |
| #define OCFS2_INODE_OPEN_DIRECT 0x00000040 |
| /* Tell the inode wipe code it's not in orphan dir */ |
| #define OCFS2_INODE_SKIP_ORPHAN_DIR 0x00000080 |
| |
| static inline struct ocfs2_inode_info *OCFS2_I(struct inode *inode) |
| { |
| return container_of(inode, struct ocfs2_inode_info, vfs_inode); |
| } |
| |
| #define INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags & OCFS2_INODE_JOURNAL) |
| #define SET_INODE_JOURNAL(i) (OCFS2_I(i)->ip_flags |= OCFS2_INODE_JOURNAL) |
| |
| extern struct kmem_cache *ocfs2_inode_cache; |
| |
| extern const struct address_space_operations ocfs2_aops; |
| extern const struct ocfs2_caching_operations ocfs2_inode_caching_ops; |
| |
| static inline struct ocfs2_caching_info *INODE_CACHE(struct inode *inode) |
| { |
| return &OCFS2_I(inode)->ip_metadata_cache; |
| } |
| |
| void ocfs2_clear_inode(struct inode *inode); |
| void ocfs2_delete_inode(struct inode *inode); |
| void ocfs2_drop_inode(struct inode *inode); |
| |
| /* Flags for ocfs2_iget() */ |
| #define OCFS2_FI_FLAG_SYSFILE 0x1 |
| #define OCFS2_FI_FLAG_ORPHAN_RECOVERY 0x2 |
| struct inode *ocfs2_ilookup(struct super_block *sb, u64 feoff); |
| struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 feoff, unsigned flags, |
| int sysfile_type); |
| int ocfs2_inode_init_private(struct inode *inode); |
| int ocfs2_inode_revalidate(struct dentry *dentry); |
| void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
| int create_ino); |
| void ocfs2_read_inode(struct inode *inode); |
| void ocfs2_read_inode2(struct inode *inode, void *opaque); |
| ssize_t ocfs2_rw_direct(int rw, struct file *filp, char *buf, |
| size_t size, loff_t *offp); |
| void ocfs2_sync_blockdev(struct super_block *sb); |
| void ocfs2_refresh_inode(struct inode *inode, |
| struct ocfs2_dinode *fe); |
| int ocfs2_mark_inode_dirty(handle_t *handle, |
| struct inode *inode, |
| struct buffer_head *bh); |
| int ocfs2_aio_read(struct file *file, struct kiocb *req, struct iocb *iocb); |
| int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb); |
| struct buffer_head *ocfs2_bread(struct inode *inode, |
| int block, int *err, int reada); |
| |
| void ocfs2_set_inode_flags(struct inode *inode); |
| void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi); |
| |
| static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode) |
| { |
| int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9; |
| |
| return (blkcnt_t)(OCFS2_I(inode)->ip_clusters << c_to_s_bits); |
| } |
| |
| /* Validate that a bh contains a valid inode */ |
| int ocfs2_validate_inode_block(struct super_block *sb, |
| struct buffer_head *bh); |
| /* |
| * Read an inode block into *bh. If *bh is NULL, a bh will be allocated. |
| * This is a cached read. The inode will be validated with |
| * ocfs2_validate_inode_block(). |
| */ |
| int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh); |
| /* The same, but can be passed OCFS2_BH_* flags */ |
| int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, |
| int flags); |
| |
| static inline struct ocfs2_inode_info *cache_info_to_inode(struct ocfs2_caching_info *ci) |
| { |
| return container_of(ci, struct ocfs2_inode_info, ip_metadata_cache); |
| } |
| |
| #endif /* OCFS2_INODE_H */ |