mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 00:52:01 +00:00
6454d1f903
In commit a686cd898b:
"Val's cross-port of the ext3 reservations code into ext2."
include/linux/ext2_fs.h got a new function whose return value is only
defined if __KERNEL__ is defined. Putting #ifdef __KERNEL__ around the
function seems to help, patch below.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
188 lines
6.3 KiB
C
188 lines
6.3 KiB
C
#include <linux/fs.h>
|
|
#include <linux/ext2_fs.h>
|
|
|
|
/*
|
|
* ext2 mount options
|
|
*/
|
|
struct ext2_mount_options {
|
|
unsigned long s_mount_opt;
|
|
uid_t s_resuid;
|
|
gid_t s_resgid;
|
|
};
|
|
|
|
/*
|
|
* second extended file system inode data in memory
|
|
*/
|
|
struct ext2_inode_info {
|
|
__le32 i_data[15];
|
|
__u32 i_flags;
|
|
__u32 i_faddr;
|
|
__u8 i_frag_no;
|
|
__u8 i_frag_size;
|
|
__u16 i_state;
|
|
__u32 i_file_acl;
|
|
__u32 i_dir_acl;
|
|
__u32 i_dtime;
|
|
|
|
/*
|
|
* i_block_group is the number of the block group which contains
|
|
* this file's inode. Constant across the lifetime of the inode,
|
|
* it is ued for making block allocation decisions - we try to
|
|
* place a file's data blocks near its inode block, and new inodes
|
|
* near to their parent directory's inode.
|
|
*/
|
|
__u32 i_block_group;
|
|
|
|
/* block reservation info */
|
|
struct ext2_block_alloc_info *i_block_alloc_info;
|
|
|
|
__u32 i_dir_start_lookup;
|
|
#ifdef CONFIG_EXT2_FS_XATTR
|
|
/*
|
|
* Extended attributes can be read independently of the main file
|
|
* data. Taking i_mutex even when reading would cause contention
|
|
* between readers of EAs and writers of regular file data, so
|
|
* instead we synchronize on xattr_sem when reading or changing
|
|
* EAs.
|
|
*/
|
|
struct rw_semaphore xattr_sem;
|
|
#endif
|
|
#ifdef CONFIG_EXT2_FS_POSIX_ACL
|
|
struct posix_acl *i_acl;
|
|
struct posix_acl *i_default_acl;
|
|
#endif
|
|
rwlock_t i_meta_lock;
|
|
|
|
/*
|
|
* truncate_mutex is for serialising ext2_truncate() against
|
|
* ext2_getblock(). It also protects the internals of the inode's
|
|
* reservation data structures: ext2_reserve_window and
|
|
* ext2_reserve_window_node.
|
|
*/
|
|
struct mutex truncate_mutex;
|
|
struct inode vfs_inode;
|
|
struct list_head i_orphan; /* unlinked but open inodes */
|
|
};
|
|
|
|
/*
|
|
* Inode dynamic state flags
|
|
*/
|
|
#define EXT2_STATE_NEW 0x00000001 /* inode is newly created */
|
|
|
|
|
|
/*
|
|
* Function prototypes
|
|
*/
|
|
|
|
/*
|
|
* Ok, these declarations are also in <linux/kernel.h> but none of the
|
|
* ext2 source programs needs to include it so they are duplicated here.
|
|
*/
|
|
|
|
static inline struct ext2_inode_info *EXT2_I(struct inode *inode)
|
|
{
|
|
return container_of(inode, struct ext2_inode_info, vfs_inode);
|
|
}
|
|
|
|
/* balloc.c */
|
|
extern int ext2_bg_has_super(struct super_block *sb, int group);
|
|
extern unsigned long ext2_bg_num_gdb(struct super_block *sb, int group);
|
|
extern ext2_fsblk_t ext2_new_block(struct inode *, unsigned long, int *);
|
|
extern ext2_fsblk_t ext2_new_blocks(struct inode *, unsigned long,
|
|
unsigned long *, int *);
|
|
extern void ext2_free_blocks (struct inode *, unsigned long,
|
|
unsigned long);
|
|
extern unsigned long ext2_count_free_blocks (struct super_block *);
|
|
extern unsigned long ext2_count_dirs (struct super_block *);
|
|
extern void ext2_check_blocks_bitmap (struct super_block *);
|
|
extern struct ext2_group_desc * ext2_get_group_desc(struct super_block * sb,
|
|
unsigned int block_group,
|
|
struct buffer_head ** bh);
|
|
extern void ext2_discard_reservation (struct inode *);
|
|
extern int ext2_should_retry_alloc(struct super_block *sb, int *retries);
|
|
extern void ext2_init_block_alloc_info(struct inode *);
|
|
extern void ext2_rsv_window_add(struct super_block *sb, struct ext2_reserve_window_node *rsv);
|
|
|
|
/* dir.c */
|
|
extern int ext2_add_link (struct dentry *, struct inode *);
|
|
extern ino_t ext2_inode_by_name(struct inode *, struct dentry *);
|
|
extern int ext2_make_empty(struct inode *, struct inode *);
|
|
extern struct ext2_dir_entry_2 * ext2_find_entry (struct inode *,struct dentry *, struct page **);
|
|
extern int ext2_delete_entry (struct ext2_dir_entry_2 *, struct page *);
|
|
extern int ext2_empty_dir (struct inode *);
|
|
extern struct ext2_dir_entry_2 * ext2_dotdot (struct inode *, struct page **);
|
|
extern void ext2_set_link(struct inode *, struct ext2_dir_entry_2 *, struct page *, struct inode *);
|
|
|
|
/* fsync.c */
|
|
extern int ext2_sync_file (struct file *, struct dentry *, int);
|
|
|
|
/* ialloc.c */
|
|
extern struct inode * ext2_new_inode (struct inode *, int);
|
|
extern void ext2_free_inode (struct inode *);
|
|
extern unsigned long ext2_count_free_inodes (struct super_block *);
|
|
extern void ext2_check_inodes_bitmap (struct super_block *);
|
|
extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
|
|
|
|
/* inode.c */
|
|
extern void ext2_read_inode (struct inode *);
|
|
extern int ext2_write_inode (struct inode *, int);
|
|
extern void ext2_put_inode (struct inode *);
|
|
extern void ext2_delete_inode (struct inode *);
|
|
extern int ext2_sync_inode (struct inode *);
|
|
extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
|
|
extern void ext2_truncate (struct inode *);
|
|
extern int ext2_setattr (struct dentry *, struct iattr *);
|
|
extern void ext2_set_inode_flags(struct inode *inode);
|
|
extern void ext2_get_inode_flags(struct ext2_inode_info *);
|
|
int __ext2_write_begin(struct file *file, struct address_space *mapping,
|
|
loff_t pos, unsigned len, unsigned flags,
|
|
struct page **pagep, void **fsdata);
|
|
|
|
/* ioctl.c */
|
|
extern int ext2_ioctl (struct inode *, struct file *, unsigned int,
|
|
unsigned long);
|
|
extern long ext2_compat_ioctl(struct file *, unsigned int, unsigned long);
|
|
|
|
/* namei.c */
|
|
struct dentry *ext2_get_parent(struct dentry *child);
|
|
|
|
/* super.c */
|
|
extern void ext2_error (struct super_block *, const char *, const char *, ...)
|
|
__attribute__ ((format (printf, 3, 4)));
|
|
extern void ext2_warning (struct super_block *, const char *, const char *, ...)
|
|
__attribute__ ((format (printf, 3, 4)));
|
|
extern void ext2_update_dynamic_rev (struct super_block *sb);
|
|
extern void ext2_write_super (struct super_block *);
|
|
|
|
/*
|
|
* Inodes and files operations
|
|
*/
|
|
|
|
/* dir.c */
|
|
extern const struct file_operations ext2_dir_operations;
|
|
|
|
/* file.c */
|
|
extern const struct inode_operations ext2_file_inode_operations;
|
|
extern const struct file_operations ext2_file_operations;
|
|
extern const struct file_operations ext2_xip_file_operations;
|
|
|
|
/* inode.c */
|
|
extern const struct address_space_operations ext2_aops;
|
|
extern const struct address_space_operations ext2_aops_xip;
|
|
extern const struct address_space_operations ext2_nobh_aops;
|
|
|
|
/* namei.c */
|
|
extern const struct inode_operations ext2_dir_inode_operations;
|
|
extern const struct inode_operations ext2_special_inode_operations;
|
|
|
|
/* symlink.c */
|
|
extern const struct inode_operations ext2_fast_symlink_inode_operations;
|
|
extern const struct inode_operations ext2_symlink_inode_operations;
|
|
|
|
static inline ext2_fsblk_t
|
|
ext2_group_first_block_no(struct super_block *sb, unsigned long group_no)
|
|
{
|
|
return group_no * (ext2_fsblk_t)EXT2_BLOCKS_PER_GROUP(sb) +
|
|
le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block);
|
|
}
|