ReactOS
0.4.16-dev-320-g3bd9ddc
ext3_fs_i.h
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/*
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* linux/include/linux/ext3_fs_i.h
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*
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* Copyright (C) 1992, 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* from
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*
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* linux/include/linux/minix_fs_i.h
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*/
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#ifndef _LINUX_EXT3_FS_I
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#define _LINUX_EXT3_FS_I
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#include <
linux/rbtree.h
>
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/* data type for block offset of block group */
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typedef
int
ext3_grpblk_t
;
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typedef
int
ext4_grpblk_t
;
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/* data type for filesystem-wide blocks number */
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typedef
unsigned
long
long
ext3_fsblk_t
;
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typedef
unsigned
long
long
ext4_fsblk_t
;
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/* data type for file logical block number */
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typedef
__u32
ext3_lblk_t
;
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typedef
__u32
ext4_lblk_t
;
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/* data type for block group number */
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typedef
unsigned
int
ext3_group_t
;
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typedef
unsigned
int
ext4_group_t
;
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#define E3FSBLK "%lu"
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struct
ext3_reserve_window
{
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ext3_fsblk_t
_rsv_start
;
/* First byte reserved */
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ext3_fsblk_t
_rsv_end
;
/* Last byte reserved or 0 */
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};
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struct
ext3_reserve_window_node
{
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struct
rb_node
rsv_node
;
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__u32
rsv_goal_size
;
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__u32
rsv_alloc_hit
;
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struct
ext3_reserve_window
rsv_window
;
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};
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struct
ext3_block_alloc_info
{
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/* information about reservation window */
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struct
ext3_reserve_window_node
rsv_window_node
;
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/*
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* was i_next_alloc_block in ext3_inode_info
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* is the logical (file-relative) number of the
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* most-recently-allocated block in this file.
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* We use this for detecting linearly ascending allocation requests.
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*/
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__u32
last_alloc_logical_block
;
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/*
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* Was i_next_alloc_goal in ext3_inode_info
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* is the *physical* companion to i_next_alloc_block.
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* it the physical block number of the block which was most-recentl
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* allocated to this file. This give us the goal (target) for the next
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* allocation when we detect linearly ascending requests.
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*/
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ext3_fsblk_t
last_alloc_physical_block
;
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};
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#define rsv_start rsv_window._rsv_start
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#define rsv_end rsv_window._rsv_end
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/*
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* third extended file system inode data in memory
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*/
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struct
ext3_inode_info
{
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__le32
i_data
[15];
/* unconverted */
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__u32
i_flags
;
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#ifdef EXT3_FRAGMENTS
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__u32
i_faddr;
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__u8
i_frag_no;
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__u8
i_frag_size;
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#endif
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ext3_fsblk_t
i_file_acl
;
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__u32
i_dir_acl
;
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__u32
i_dtime
;
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/*
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* i_block_group is the number of the block group which contains
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* this file's inode. Constant across the lifetime of the inode,
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* it is ued for making block allocation decisions - we try to
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* place a file's data blocks near its inode block, and new inodes
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* near to their parent directory's inode.
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*/
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__u32
i_block_group
;
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__u32
i_state
;
/* Dynamic state flags for ext3 */
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/* block reservation info */
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struct
ext3_block_alloc_info
*
i_block_alloc_info
;
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__u32
i_dir_start_lookup
;
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#ifdef CONFIG_EXT3_FS_XATTR
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/*
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* Extended attributes can be read independently of the main file
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* data. Taking i_mutex even when reading would cause contention
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* between readers of EAs and writers of regular file data, so
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* instead we synchronize on xattr_sem when reading or changing
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* EAs.
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*/
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struct
rw_semaphore xattr_sem;
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#endif
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#ifdef CONFIG_EXT3_FS_POSIX_ACL
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struct
posix_acl *i_acl;
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struct
posix_acl *i_default_acl;
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#endif
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struct
list_head
i_orphan
;
/* unlinked but open inodes */
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/*
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* i_disksize keeps track of what the inode size is ON DISK, not
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* in memory. During truncate, i_size is set to the new size by
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* the VFS prior to calling ext3_truncate(), but the filesystem won't
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* set i_disksize to 0 until the truncate is actually under way.
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*
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* The intent is that i_disksize always represents the blocks which
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* are used by this file. This allows recovery to restart truncate
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* on orphans if we crash during truncate. We actually write i_disksize
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* into the on-disk inode when writing inodes out, instead of i_size.
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*
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* The only time when i_disksize and i_size may be different is when
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* a truncate is in progress. The only things which change i_disksize
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* are ext3_get_block (growth) and ext3_truncate (shrinkth).
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*/
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loff_t
i_disksize
;
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/* on-disk additional length */
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__u16
i_extra_isize
;
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#if 0
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/*
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* truncate_mutex is for serialising ext3_truncate() against
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* ext3_getblock(). In the 2.4 ext2 design, great chunks of inode's
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* data tree are chopped off during truncate. We can't do that in
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* ext3 because whenever we perform intermediate commits during
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* truncate, the inode and all the metadata blocks *must* be in a
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* consistent state which allows truncation of the orphans to restart
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* during recovery. Hence we must fix the get_block-vs-truncate race
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* by other means, so we have truncate_mutex.
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*/
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struct
mutex
truncate_mutex;
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#endif
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struct
inode
vfs_inode
;
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};
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#endif
/* _LINUX_EXT3_FS_I */
__u16
u16 __u16
Definition:
btrfs.h:18
__u8
u8 __u8
Definition:
btrfs.h:17
__u32
u32 __u32
Definition:
btrfs.h:19
rbtree.h
__le32
#define __le32
Definition:
types.h:44
loff_t
unsigned __int64 loff_t
Definition:
types.h:84
ext4_lblk_t
__u32 ext4_lblk_t
Definition:
ext3_fs_i.h:31
ext4_fsblk_t
unsigned long long ext4_fsblk_t
Definition:
ext3_fs_i.h:27
ext3_group_t
unsigned int ext3_group_t
Definition:
ext3_fs_i.h:34
ext3_grpblk_t
int ext3_grpblk_t
Definition:
ext3_fs_i.h:22
ext4_grpblk_t
int ext4_grpblk_t
Definition:
ext3_fs_i.h:23
ext3_fsblk_t
unsigned long long ext3_fsblk_t
Definition:
ext3_fs_i.h:26
ext4_group_t
unsigned int ext4_group_t
Definition:
ext3_fs_i.h:35
ext3_lblk_t
__u32 ext3_lblk_t
Definition:
ext3_fs_i.h:30
ext3_block_alloc_info
Definition:
ext3_fs_i.h:51
ext3_block_alloc_info::rsv_window_node
struct ext3_reserve_window_node rsv_window_node
Definition:
ext3_fs_i.h:53
ext3_block_alloc_info::last_alloc_logical_block
__u32 last_alloc_logical_block
Definition:
ext3_fs_i.h:60
ext3_block_alloc_info::last_alloc_physical_block
ext3_fsblk_t last_alloc_physical_block
Definition:
ext3_fs_i.h:68
ext3_inode_info
Definition:
ext3_fs_i.h:77
ext3_inode_info::i_dir_acl
__u32 i_dir_acl
Definition:
ext3_fs_i.h:86
ext3_inode_info::i_flags
__u32 i_flags
Definition:
ext3_fs_i.h:79
ext3_inode_info::i_block_group
__u32 i_block_group
Definition:
ext3_fs_i.h:96
ext3_inode_info::i_state
__u32 i_state
Definition:
ext3_fs_i.h:97
ext3_inode_info::i_dir_start_lookup
__u32 i_dir_start_lookup
Definition:
ext3_fs_i.h:102
ext3_inode_info::i_block_alloc_info
struct ext3_block_alloc_info * i_block_alloc_info
Definition:
ext3_fs_i.h:100
ext3_inode_info::vfs_inode
struct inode vfs_inode
Definition:
ext3_fs_i.h:153
ext3_inode_info::i_disksize
loff_t i_disksize
Definition:
ext3_fs_i.h:135
ext3_inode_info::i_extra_isize
__u16 i_extra_isize
Definition:
ext3_fs_i.h:138
ext3_inode_info::i_data
__le32 i_data[15]
Definition:
ext3_fs_i.h:78
ext3_inode_info::i_file_acl
ext3_fsblk_t i_file_acl
Definition:
ext3_fs_i.h:85
ext3_inode_info::i_dtime
__u32 i_dtime
Definition:
ext3_fs_i.h:87
ext3_inode_info::i_orphan
struct list_head i_orphan
Definition:
ext3_fs_i.h:118
ext3_reserve_window_node
Definition:
ext3_fs_i.h:44
ext3_reserve_window_node::rsv_window
struct ext3_reserve_window rsv_window
Definition:
ext3_fs_i.h:48
ext3_reserve_window_node::rsv_goal_size
__u32 rsv_goal_size
Definition:
ext3_fs_i.h:46
ext3_reserve_window_node::rsv_node
struct rb_node rsv_node
Definition:
ext3_fs_i.h:45
ext3_reserve_window_node::rsv_alloc_hit
__u32 rsv_alloc_hit
Definition:
ext3_fs_i.h:47
ext3_reserve_window
Definition:
ext3_fs_i.h:39
ext3_reserve_window::_rsv_start
ext3_fsblk_t _rsv_start
Definition:
ext3_fs_i.h:40
ext3_reserve_window::_rsv_end
ext3_fsblk_t _rsv_end
Definition:
ext3_fs_i.h:41
inode
Definition:
fs.h:78
list_head
Definition:
list.h:15
mutex
Definition:
module.h:456
rb_node
Definition:
rbtree.h:98
drivers
filesystems
ext2
inc
linux
ext3_fs_i.h
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