mirror of
https://github.com/kdave/btrfs-progs
synced 2024-12-27 16:42:17 +00:00
98 lines
3.3 KiB
C
98 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#ifndef BTRFS_FILE_ITEM_H
|
|
#define BTRFS_FILE_ITEM_H
|
|
|
|
#include "kerncompat.h"
|
|
#include <stdbool.h>
|
|
#include <stddef.h>
|
|
#include "kernel-lib/bitops.h"
|
|
#include "kernel-shared/ctree.h"
|
|
#include "kernel-shared/uapi/btrfs_tree.h"
|
|
#include "kernel-shared/accessors.h"
|
|
|
|
struct bio;
|
|
struct inode;
|
|
struct btrfs_ordered_sum;
|
|
struct btrfs_inode;
|
|
struct btrfs_trans_handle;
|
|
struct extent_map;
|
|
struct extent_buffer;
|
|
struct list_head;
|
|
|
|
#define BTRFS_FILE_EXTENT_INLINE_DATA_START \
|
|
(offsetof(struct btrfs_file_extent_item, disk_bytenr))
|
|
|
|
static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
|
|
{
|
|
return BTRFS_MAX_ITEM_SIZE(info) -
|
|
BTRFS_FILE_EXTENT_INLINE_DATA_START;
|
|
}
|
|
|
|
/*
|
|
* Returns the number of bytes used by the item on disk, minus the size of any
|
|
* extent headers. If a file is compressed on disk, this is the compressed
|
|
* size.
|
|
*/
|
|
static inline u32 btrfs_file_extent_inline_item_len(
|
|
const struct extent_buffer *eb,
|
|
int nr)
|
|
{
|
|
return btrfs_item_size(eb, nr) - BTRFS_FILE_EXTENT_INLINE_DATA_START;
|
|
}
|
|
|
|
static inline unsigned long btrfs_file_extent_inline_start(
|
|
const struct btrfs_file_extent_item *e)
|
|
{
|
|
return (unsigned long)e + BTRFS_FILE_EXTENT_INLINE_DATA_START;
|
|
}
|
|
|
|
static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
|
|
{
|
|
return BTRFS_FILE_EXTENT_INLINE_DATA_START + datasize;
|
|
}
|
|
|
|
int btrfs_del_csums(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, u64 bytenr, u64 len);
|
|
blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u8 *dst);
|
|
int btrfs_insert_hole_extent(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, u64 objectid, u64 pos,
|
|
u64 num_bytes);
|
|
int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
struct btrfs_path *path, u64 objectid,
|
|
u64 bytenr, int mod);
|
|
int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
struct btrfs_ordered_sum *sums);
|
|
blk_status_t btrfs_csum_one_bio(struct btrfs_inode *inode, struct bio *bio,
|
|
u64 offset, bool one_ordered);
|
|
int btrfs_lookup_csums_range(struct btrfs_root *root, u64 start, u64 end,
|
|
struct list_head *list, int search_commit,
|
|
bool nowait);
|
|
void btrfs_extent_item_to_extent_map(struct btrfs_inode *inode,
|
|
const struct btrfs_path *path,
|
|
struct btrfs_file_extent_item *fi,
|
|
struct extent_map *em);
|
|
int btrfs_inode_clear_file_extent_range(struct btrfs_inode *inode, u64 start,
|
|
u64 len);
|
|
int btrfs_inode_set_file_extent_range(struct btrfs_inode *inode, u64 start, u64 len);
|
|
void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_size);
|
|
u64 btrfs_file_extent_end(const struct btrfs_path *path);
|
|
|
|
/*
|
|
* MODIFIED:
|
|
* - This function doesn't exist in the kernel.
|
|
*/
|
|
int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
u64 objectid, u64 pos, u64 offset,
|
|
u64 disk_num_bytes, u64 num_bytes);
|
|
int btrfs_csum_file_block(struct btrfs_trans_handle *trans, u64 logical,
|
|
u64 csum_objectid, u32 csum_type, const char *data);
|
|
int btrfs_insert_inline_extent(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, u64 objectid,
|
|
u64 offset, const char *buffer, size_t size);
|
|
|
|
#endif
|