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![Qu Wenruo](/assets/img/avatar_default.png)
Since the old code is using __btrfs_path/__btrfs_root which is different from the regular extent buffer based one, we add "__" prefix for the old implementation to avoid name conflicts for the incoming crossport. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Marek Behún <marek.behun@nic.cz>
1348 lines
47 KiB
C
1348 lines
47 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* From linux/fs/btrfs/ctree.h
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* Copyright (C) 2007,2008 Oracle. All rights reserved.
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*
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* Modified in 2017 by Marek Behun, CZ.NIC, marek.behun@nic.cz
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*/
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#ifndef __BTRFS_CTREE_H__
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#define __BTRFS_CTREE_H__
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#include <common.h>
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#include <compiler.h>
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#include <linux/rbtree.h>
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#include <linux/bug.h>
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#include <linux/unaligned/le_byteshift.h>
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#include <u-boot/crc.h>
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#include "kernel-shared/btrfs_tree.h"
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#include "crypto/hash.h"
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#include "compat.h"
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#include "extent-io.h"
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#define BTRFS_MAX_MIRRORS 3
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/*
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* the max metadata block size. This limit is somewhat artificial,
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* but the memmove costs go through the roof for larger blocks.
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*/
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#define BTRFS_MAX_METADATA_BLOCKSIZE 65536
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/*
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* Theoretical limit is larger, but we keep this down to a sane
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* value. That should limit greatly the possibility of collisions on
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* inode ref items.
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*/
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#define BTRFS_LINK_MAX 65535U
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/* four bytes for CRC32 */
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#define BTRFS_EMPTY_DIR_SIZE 0
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struct btrfs_mapping_tree {
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struct cache_tree cache_tree;
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};
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static inline unsigned long btrfs_chunk_item_size(int num_stripes)
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{
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BUG_ON(num_stripes == 0);
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return sizeof(struct btrfs_chunk) +
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sizeof(struct btrfs_stripe) * (num_stripes - 1);
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}
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#define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
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#define BTRFS_LEAF_DATA_SIZE(fs_info) \
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(__BTRFS_LEAF_DATA_SIZE(fs_info->nodesize))
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struct btrfs_path {
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struct extent_buffer *nodes[BTRFS_MAX_LEVEL];
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int slots[BTRFS_MAX_LEVEL];
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/* keep some upper locks as we walk down */
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u8 lowest_level;
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};
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/* ioprio of readahead is set to idle */
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#define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0))
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#define BTRFS_DIRTY_METADATA_THRESH SZ_32M
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#define BTRFS_MAX_EXTENT_SIZE SZ_128M
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enum btrfs_tree_block_status {
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BTRFS_TREE_BLOCK_CLEAN,
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BTRFS_TREE_BLOCK_INVALID_NRITEMS,
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BTRFS_TREE_BLOCK_INVALID_PARENT_KEY,
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BTRFS_TREE_BLOCK_BAD_KEY_ORDER,
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BTRFS_TREE_BLOCK_INVALID_LEVEL,
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BTRFS_TREE_BLOCK_INVALID_FREE_SPACE,
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BTRFS_TREE_BLOCK_INVALID_OFFSETS,
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};
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struct btrfs_root {
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struct extent_buffer *node;
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struct btrfs_root_item root_item;
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struct btrfs_key root_key;
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struct btrfs_fs_info *fs_info;
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u64 objectid;
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u64 last_trans;
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int ref_cows;
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int track_dirty;
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u32 type;
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u64 last_inode_alloc;
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struct rb_node rb_node;
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};
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struct btrfs_trans_handle;
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struct btrfs_device;
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struct btrfs_fs_devices;
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struct btrfs_fs_info {
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u8 chunk_tree_uuid[BTRFS_UUID_SIZE];
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u8 *new_chunk_tree_uuid;
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struct btrfs_root *fs_root;
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struct btrfs_root *tree_root;
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struct btrfs_root *chunk_root;
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struct btrfs_root *csum_root;
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struct rb_root fs_root_tree;
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struct extent_io_tree extent_cache;
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/* logical->physical extent mapping */
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struct btrfs_mapping_tree mapping_tree;
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u64 last_trans_committed;
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struct btrfs_super_block *super_copy;
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struct btrfs_fs_devices *fs_devices;
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/* Cached block sizes */
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u32 nodesize;
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u32 sectorsize;
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u32 stripesize;
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};
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static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info)
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{
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return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item);
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}
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static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info)
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{
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return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr);
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}
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static inline u32 BTRFS_NODEPTRS_PER_EXTENT_BUFFER(const struct extent_buffer *eb)
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{
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BUG_ON(eb->fs_info && eb->fs_info->nodesize != eb->len);
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return __BTRFS_LEAF_DATA_SIZE(eb->len) / sizeof(struct btrfs_key_ptr);
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}
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#define BTRFS_FILE_EXTENT_INLINE_DATA_START \
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(offsetof(struct btrfs_file_extent_item, disk_bytenr))
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static inline u32 BTRFS_MAX_INLINE_DATA_SIZE(const struct btrfs_fs_info *info)
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{
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return BTRFS_MAX_ITEM_SIZE(info) -
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BTRFS_FILE_EXTENT_INLINE_DATA_START;
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}
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static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
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{
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return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item);
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}
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/*
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* File system states
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*/
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#define BTRFS_FS_STATE_ERROR 0
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#define BTRFS_FS_STATE_REMOUNTING 1
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#define BTRFS_FS_STATE_TRANS_ABORTED 2
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#define BTRFS_FS_STATE_DEV_REPLACING 3
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#define BTRFS_FS_STATE_DUMMY_FS_INFO 4
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#define read_eb_member(eb, ptr, type, member, result) ( \
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read_extent_buffer(eb, (char *)(result), \
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((unsigned long)(ptr)) + \
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offsetof(type, member), \
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sizeof(((type *)0)->member)))
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#define write_eb_member(eb, ptr, type, member, result) ( \
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write_extent_buffer(eb, (char *)(result), \
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((unsigned long)(ptr)) + \
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offsetof(type, member), \
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sizeof(((type *)0)->member)))
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#define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \
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static inline u##bits btrfs_##name(const struct extent_buffer *eb) \
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{ \
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const struct btrfs_header *h = (struct btrfs_header *)eb->data; \
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return le##bits##_to_cpu(h->member); \
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} \
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static inline void btrfs_set_##name(struct extent_buffer *eb, \
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u##bits val) \
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{ \
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struct btrfs_header *h = (struct btrfs_header *)eb->data; \
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h->member = cpu_to_le##bits(val); \
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}
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#define BTRFS_SETGET_FUNCS(name, type, member, bits) \
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static inline u##bits btrfs_##name(const struct extent_buffer *eb, \
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const type *s) \
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{ \
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unsigned long offset = (unsigned long)s; \
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const type *p = (type *) (eb->data + offset); \
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return get_unaligned_le##bits(&p->member); \
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} \
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static inline void btrfs_set_##name(struct extent_buffer *eb, \
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type *s, u##bits val) \
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{ \
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unsigned long offset = (unsigned long)s; \
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type *p = (type *) (eb->data + offset); \
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put_unaligned_le##bits(val, &p->member); \
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}
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#define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \
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static inline u##bits btrfs_##name(const type *s) \
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{ \
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return le##bits##_to_cpu(s->member); \
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} \
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static inline void btrfs_set_##name(type *s, u##bits val) \
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{ \
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s->member = cpu_to_le##bits(val); \
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}
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BTRFS_SETGET_FUNCS(device_type, struct btrfs_dev_item, type, 64);
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BTRFS_SETGET_FUNCS(device_total_bytes, struct btrfs_dev_item, total_bytes, 64);
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BTRFS_SETGET_FUNCS(device_bytes_used, struct btrfs_dev_item, bytes_used, 64);
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BTRFS_SETGET_FUNCS(device_io_align, struct btrfs_dev_item, io_align, 32);
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BTRFS_SETGET_FUNCS(device_io_width, struct btrfs_dev_item, io_width, 32);
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BTRFS_SETGET_FUNCS(device_start_offset, struct btrfs_dev_item,
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start_offset, 64);
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BTRFS_SETGET_FUNCS(device_sector_size, struct btrfs_dev_item, sector_size, 32);
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BTRFS_SETGET_FUNCS(device_id, struct btrfs_dev_item, devid, 64);
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BTRFS_SETGET_FUNCS(device_group, struct btrfs_dev_item, dev_group, 32);
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BTRFS_SETGET_FUNCS(device_seek_speed, struct btrfs_dev_item, seek_speed, 8);
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BTRFS_SETGET_FUNCS(device_bandwidth, struct btrfs_dev_item, bandwidth, 8);
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BTRFS_SETGET_FUNCS(device_generation, struct btrfs_dev_item, generation, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_type, struct btrfs_dev_item, type, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_total_bytes, struct btrfs_dev_item,
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total_bytes, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_bytes_used, struct btrfs_dev_item,
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bytes_used, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_io_align, struct btrfs_dev_item,
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io_align, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_device_io_width, struct btrfs_dev_item,
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io_width, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_device_sector_size, struct btrfs_dev_item,
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sector_size, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_device_id, struct btrfs_dev_item, devid, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_device_group, struct btrfs_dev_item,
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dev_group, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_device_seek_speed, struct btrfs_dev_item,
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seek_speed, 8);
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BTRFS_SETGET_STACK_FUNCS(stack_device_bandwidth, struct btrfs_dev_item,
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bandwidth, 8);
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BTRFS_SETGET_STACK_FUNCS(stack_device_generation, struct btrfs_dev_item,
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generation, 64);
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static inline char *btrfs_device_uuid(struct btrfs_dev_item *d)
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{
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return (char *)d + offsetof(struct btrfs_dev_item, uuid);
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}
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static inline char *btrfs_device_fsid(struct btrfs_dev_item *d)
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{
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return (char *)d + offsetof(struct btrfs_dev_item, fsid);
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}
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BTRFS_SETGET_FUNCS(chunk_length, struct btrfs_chunk, length, 64);
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BTRFS_SETGET_FUNCS(chunk_owner, struct btrfs_chunk, owner, 64);
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BTRFS_SETGET_FUNCS(chunk_stripe_len, struct btrfs_chunk, stripe_len, 64);
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BTRFS_SETGET_FUNCS(chunk_io_align, struct btrfs_chunk, io_align, 32);
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BTRFS_SETGET_FUNCS(chunk_io_width, struct btrfs_chunk, io_width, 32);
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BTRFS_SETGET_FUNCS(chunk_sector_size, struct btrfs_chunk, sector_size, 32);
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BTRFS_SETGET_FUNCS(chunk_type, struct btrfs_chunk, type, 64);
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BTRFS_SETGET_FUNCS(chunk_num_stripes, struct btrfs_chunk, num_stripes, 16);
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BTRFS_SETGET_FUNCS(chunk_sub_stripes, struct btrfs_chunk, sub_stripes, 16);
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BTRFS_SETGET_FUNCS(stripe_devid, struct btrfs_stripe, devid, 64);
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BTRFS_SETGET_FUNCS(stripe_offset, struct btrfs_stripe, offset, 64);
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static inline char *btrfs_stripe_dev_uuid(struct btrfs_stripe *s)
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{
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return (char *)s + offsetof(struct btrfs_stripe, dev_uuid);
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}
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_length, struct btrfs_chunk, length, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_owner, struct btrfs_chunk, owner, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_stripe_len, struct btrfs_chunk,
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stripe_len, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_align, struct btrfs_chunk,
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io_align, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_io_width, struct btrfs_chunk,
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io_width, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_sector_size, struct btrfs_chunk,
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sector_size, 32);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_type, struct btrfs_chunk, type, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_num_stripes, struct btrfs_chunk,
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num_stripes, 16);
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BTRFS_SETGET_STACK_FUNCS(stack_chunk_sub_stripes, struct btrfs_chunk,
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sub_stripes, 16);
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BTRFS_SETGET_STACK_FUNCS(stack_stripe_devid, struct btrfs_stripe, devid, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_stripe_offset, struct btrfs_stripe, offset, 64);
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static inline struct btrfs_stripe *btrfs_stripe_nr(struct btrfs_chunk *c,
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int nr)
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{
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unsigned long offset = (unsigned long)c;
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offset += offsetof(struct btrfs_chunk, stripe);
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offset += nr * sizeof(struct btrfs_stripe);
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return (struct btrfs_stripe *)offset;
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}
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static inline char *btrfs_stripe_dev_uuid_nr(struct btrfs_chunk *c, int nr)
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{
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return btrfs_stripe_dev_uuid(btrfs_stripe_nr(c, nr));
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}
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static inline u64 btrfs_stripe_offset_nr(struct extent_buffer *eb,
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struct btrfs_chunk *c, int nr)
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{
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return btrfs_stripe_offset(eb, btrfs_stripe_nr(c, nr));
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}
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static inline void btrfs_set_stripe_offset_nr(struct extent_buffer *eb,
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struct btrfs_chunk *c, int nr,
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u64 val)
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{
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btrfs_set_stripe_offset(eb, btrfs_stripe_nr(c, nr), val);
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}
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static inline u64 btrfs_stripe_devid_nr(struct extent_buffer *eb,
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struct btrfs_chunk *c, int nr)
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{
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return btrfs_stripe_devid(eb, btrfs_stripe_nr(c, nr));
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}
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static inline void btrfs_set_stripe_devid_nr(struct extent_buffer *eb,
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struct btrfs_chunk *c, int nr,
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u64 val)
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{
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btrfs_set_stripe_devid(eb, btrfs_stripe_nr(c, nr), val);
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}
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/* struct btrfs_block_group_item */
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BTRFS_SETGET_STACK_FUNCS(block_group_used, struct btrfs_block_group_item,
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used, 64);
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BTRFS_SETGET_FUNCS(disk_block_group_used, struct btrfs_block_group_item,
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used, 64);
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BTRFS_SETGET_STACK_FUNCS(block_group_chunk_objectid,
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struct btrfs_block_group_item, chunk_objectid, 64);
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BTRFS_SETGET_FUNCS(disk_block_group_chunk_objectid,
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struct btrfs_block_group_item, chunk_objectid, 64);
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BTRFS_SETGET_FUNCS(disk_block_group_flags,
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struct btrfs_block_group_item, flags, 64);
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BTRFS_SETGET_STACK_FUNCS(block_group_flags,
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struct btrfs_block_group_item, flags, 64);
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/* struct btrfs_free_space_info */
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BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info,
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extent_count, 32);
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BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32);
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/* struct btrfs_inode_ref */
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BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len, struct btrfs_inode_ref, name_len, 16);
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BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64);
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/* struct btrfs_inode_extref */
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BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref,
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parent_objectid, 64);
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BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref,
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name_len, 16);
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BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64);
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/* struct btrfs_inode_item */
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BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64);
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BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64);
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BTRFS_SETGET_FUNCS(inode_transid, struct btrfs_inode_item, transid, 64);
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BTRFS_SETGET_FUNCS(inode_size, struct btrfs_inode_item, size, 64);
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BTRFS_SETGET_FUNCS(inode_nbytes, struct btrfs_inode_item, nbytes, 64);
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BTRFS_SETGET_FUNCS(inode_block_group, struct btrfs_inode_item, block_group, 64);
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BTRFS_SETGET_FUNCS(inode_nlink, struct btrfs_inode_item, nlink, 32);
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BTRFS_SETGET_FUNCS(inode_uid, struct btrfs_inode_item, uid, 32);
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BTRFS_SETGET_FUNCS(inode_gid, struct btrfs_inode_item, gid, 32);
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BTRFS_SETGET_FUNCS(inode_mode, struct btrfs_inode_item, mode, 32);
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BTRFS_SETGET_FUNCS(inode_rdev, struct btrfs_inode_item, rdev, 64);
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BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_generation,
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struct btrfs_inode_item, generation, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence,
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struct btrfs_inode_item, sequence, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_transid,
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struct btrfs_inode_item, transid, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_size,
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struct btrfs_inode_item, size, 64);
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BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes,
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struct btrfs_inode_item, nbytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_inode_block_group,
|
|
struct btrfs_inode_item, block_group, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_inode_nlink,
|
|
struct btrfs_inode_item, nlink, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_inode_uid,
|
|
struct btrfs_inode_item, uid, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_inode_gid,
|
|
struct btrfs_inode_item, gid, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_inode_mode,
|
|
struct btrfs_inode_item, mode, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_inode_rdev,
|
|
struct btrfs_inode_item, rdev, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_inode_flags,
|
|
struct btrfs_inode_item, flags, 64);
|
|
|
|
static inline struct btrfs_timespec *
|
|
btrfs_inode_atime(struct btrfs_inode_item *inode_item)
|
|
{
|
|
unsigned long ptr = (unsigned long)inode_item;
|
|
ptr += offsetof(struct btrfs_inode_item, atime);
|
|
return (struct btrfs_timespec *)ptr;
|
|
}
|
|
|
|
static inline struct btrfs_timespec *
|
|
btrfs_inode_mtime(struct btrfs_inode_item *inode_item)
|
|
{
|
|
unsigned long ptr = (unsigned long)inode_item;
|
|
ptr += offsetof(struct btrfs_inode_item, mtime);
|
|
return (struct btrfs_timespec *)ptr;
|
|
}
|
|
|
|
static inline struct btrfs_timespec *
|
|
btrfs_inode_ctime(struct btrfs_inode_item *inode_item)
|
|
{
|
|
unsigned long ptr = (unsigned long)inode_item;
|
|
ptr += offsetof(struct btrfs_inode_item, ctime);
|
|
return (struct btrfs_timespec *)ptr;
|
|
}
|
|
|
|
static inline struct btrfs_timespec *
|
|
btrfs_inode_otime(struct btrfs_inode_item *inode_item)
|
|
{
|
|
unsigned long ptr = (unsigned long)inode_item;
|
|
ptr += offsetof(struct btrfs_inode_item, otime);
|
|
return (struct btrfs_timespec *)ptr;
|
|
}
|
|
|
|
BTRFS_SETGET_FUNCS(timespec_sec, struct btrfs_timespec, sec, 64);
|
|
BTRFS_SETGET_FUNCS(timespec_nsec, struct btrfs_timespec, nsec, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_timespec_sec, struct btrfs_timespec,
|
|
sec, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_timespec_nsec, struct btrfs_timespec,
|
|
nsec, 32);
|
|
|
|
/* struct btrfs_dev_extent */
|
|
BTRFS_SETGET_FUNCS(dev_extent_chunk_tree, struct btrfs_dev_extent,
|
|
chunk_tree, 64);
|
|
BTRFS_SETGET_FUNCS(dev_extent_chunk_objectid, struct btrfs_dev_extent,
|
|
chunk_objectid, 64);
|
|
BTRFS_SETGET_FUNCS(dev_extent_chunk_offset, struct btrfs_dev_extent,
|
|
chunk_offset, 64);
|
|
BTRFS_SETGET_FUNCS(dev_extent_length, struct btrfs_dev_extent, length, 64);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dev_extent_length, struct btrfs_dev_extent,
|
|
length, 64);
|
|
|
|
static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev)
|
|
{
|
|
unsigned long ptr = offsetof(struct btrfs_dev_extent, chunk_tree_uuid);
|
|
return (u8 *)((unsigned long)dev + ptr);
|
|
}
|
|
|
|
|
|
/* struct btrfs_extent_item */
|
|
BTRFS_SETGET_FUNCS(extent_refs, struct btrfs_extent_item, refs, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_extent_refs, struct btrfs_extent_item, refs, 64);
|
|
BTRFS_SETGET_FUNCS(extent_generation, struct btrfs_extent_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(extent_flags, struct btrfs_extent_item, flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_extent_flags, struct btrfs_extent_item, flags, 64);
|
|
|
|
BTRFS_SETGET_FUNCS(extent_refs_v0, struct btrfs_extent_item_v0, refs, 32);
|
|
|
|
BTRFS_SETGET_FUNCS(tree_block_level, struct btrfs_tree_block_info, level, 8);
|
|
|
|
static inline void btrfs_tree_block_key(struct extent_buffer *eb,
|
|
struct btrfs_tree_block_info *item,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
read_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
|
|
}
|
|
|
|
static inline void btrfs_set_tree_block_key(struct extent_buffer *eb,
|
|
struct btrfs_tree_block_info *item,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
write_eb_member(eb, item, struct btrfs_tree_block_info, key, key);
|
|
}
|
|
|
|
BTRFS_SETGET_FUNCS(extent_data_ref_root, struct btrfs_extent_data_ref,
|
|
root, 64);
|
|
BTRFS_SETGET_FUNCS(extent_data_ref_objectid, struct btrfs_extent_data_ref,
|
|
objectid, 64);
|
|
BTRFS_SETGET_FUNCS(extent_data_ref_offset, struct btrfs_extent_data_ref,
|
|
offset, 64);
|
|
BTRFS_SETGET_FUNCS(extent_data_ref_count, struct btrfs_extent_data_ref,
|
|
count, 32);
|
|
|
|
BTRFS_SETGET_FUNCS(shared_data_ref_count, struct btrfs_shared_data_ref,
|
|
count, 32);
|
|
|
|
BTRFS_SETGET_FUNCS(extent_inline_ref_type, struct btrfs_extent_inline_ref,
|
|
type, 8);
|
|
BTRFS_SETGET_FUNCS(extent_inline_ref_offset, struct btrfs_extent_inline_ref,
|
|
offset, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_extent_inline_ref_type,
|
|
struct btrfs_extent_inline_ref, type, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_extent_inline_ref_offset,
|
|
struct btrfs_extent_inline_ref, offset, 64);
|
|
|
|
static inline u32 btrfs_extent_inline_ref_size(int type)
|
|
{
|
|
if (type == BTRFS_TREE_BLOCK_REF_KEY ||
|
|
type == BTRFS_SHARED_BLOCK_REF_KEY)
|
|
return sizeof(struct btrfs_extent_inline_ref);
|
|
if (type == BTRFS_SHARED_DATA_REF_KEY)
|
|
return sizeof(struct btrfs_shared_data_ref) +
|
|
sizeof(struct btrfs_extent_inline_ref);
|
|
if (type == BTRFS_EXTENT_DATA_REF_KEY)
|
|
return sizeof(struct btrfs_extent_data_ref) +
|
|
offsetof(struct btrfs_extent_inline_ref, offset);
|
|
BUG();
|
|
return 0;
|
|
}
|
|
|
|
BTRFS_SETGET_FUNCS(ref_root_v0, struct btrfs_extent_ref_v0, root, 64);
|
|
BTRFS_SETGET_FUNCS(ref_generation_v0, struct btrfs_extent_ref_v0,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(ref_objectid_v0, struct btrfs_extent_ref_v0, objectid, 64);
|
|
BTRFS_SETGET_FUNCS(ref_count_v0, struct btrfs_extent_ref_v0, count, 32);
|
|
|
|
/* struct btrfs_node */
|
|
BTRFS_SETGET_FUNCS(key_blockptr, struct btrfs_key_ptr, blockptr, 64);
|
|
BTRFS_SETGET_FUNCS(key_generation, struct btrfs_key_ptr, generation, 64);
|
|
|
|
static inline u64 btrfs_node_blockptr(struct extent_buffer *eb, int nr)
|
|
{
|
|
unsigned long ptr;
|
|
ptr = offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
return btrfs_key_blockptr(eb, (struct btrfs_key_ptr *)ptr);
|
|
}
|
|
|
|
static inline void btrfs_set_node_blockptr(struct extent_buffer *eb,
|
|
int nr, u64 val)
|
|
{
|
|
unsigned long ptr;
|
|
ptr = offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
btrfs_set_key_blockptr(eb, (struct btrfs_key_ptr *)ptr, val);
|
|
}
|
|
|
|
static inline u64 btrfs_node_ptr_generation(struct extent_buffer *eb, int nr)
|
|
{
|
|
unsigned long ptr;
|
|
ptr = offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
return btrfs_key_generation(eb, (struct btrfs_key_ptr *)ptr);
|
|
}
|
|
|
|
static inline void btrfs_set_node_ptr_generation(struct extent_buffer *eb,
|
|
int nr, u64 val)
|
|
{
|
|
unsigned long ptr;
|
|
ptr = offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
btrfs_set_key_generation(eb, (struct btrfs_key_ptr *)ptr, val);
|
|
}
|
|
|
|
static inline unsigned long btrfs_node_key_ptr_offset(int nr)
|
|
{
|
|
return offsetof(struct btrfs_node, ptrs) +
|
|
sizeof(struct btrfs_key_ptr) * nr;
|
|
}
|
|
|
|
static inline void btrfs_node_key(struct extent_buffer *eb,
|
|
struct btrfs_disk_key *disk_key, int nr)
|
|
{
|
|
unsigned long ptr;
|
|
ptr = btrfs_node_key_ptr_offset(nr);
|
|
read_eb_member(eb, (struct btrfs_key_ptr *)ptr,
|
|
struct btrfs_key_ptr, key, disk_key);
|
|
}
|
|
|
|
static inline void btrfs_set_node_key(struct extent_buffer *eb,
|
|
struct btrfs_disk_key *disk_key, int nr)
|
|
{
|
|
unsigned long ptr;
|
|
ptr = btrfs_node_key_ptr_offset(nr);
|
|
write_eb_member(eb, (struct btrfs_key_ptr *)ptr,
|
|
struct btrfs_key_ptr, key, disk_key);
|
|
}
|
|
|
|
/* struct btrfs_item */
|
|
BTRFS_SETGET_FUNCS(item_offset, struct btrfs_item, offset, 32);
|
|
BTRFS_SETGET_FUNCS(item_size, struct btrfs_item, size, 32);
|
|
|
|
static inline unsigned long btrfs_item_nr_offset(int nr)
|
|
{
|
|
return offsetof(struct btrfs_leaf, items) +
|
|
sizeof(struct btrfs_item) * nr;
|
|
}
|
|
|
|
static inline struct btrfs_item *btrfs_item_nr(int nr)
|
|
{
|
|
return (struct btrfs_item *)btrfs_item_nr_offset(nr);
|
|
}
|
|
|
|
static inline u32 btrfs_item_end(struct extent_buffer *eb,
|
|
struct btrfs_item *item)
|
|
{
|
|
return btrfs_item_offset(eb, item) + btrfs_item_size(eb, item);
|
|
}
|
|
|
|
static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr)
|
|
{
|
|
return btrfs_item_end(eb, btrfs_item_nr(nr));
|
|
}
|
|
|
|
static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr)
|
|
{
|
|
return btrfs_item_offset(eb, btrfs_item_nr(nr));
|
|
}
|
|
|
|
static inline u32 btrfs_item_size_nr(struct extent_buffer *eb, int nr)
|
|
{
|
|
return btrfs_item_size(eb, btrfs_item_nr(nr));
|
|
}
|
|
|
|
static inline void btrfs_item_key(struct extent_buffer *eb,
|
|
struct btrfs_disk_key *disk_key, int nr)
|
|
{
|
|
struct btrfs_item *item = btrfs_item_nr(nr);
|
|
read_eb_member(eb, item, struct btrfs_item, key, disk_key);
|
|
}
|
|
|
|
static inline void btrfs_set_item_key(struct extent_buffer *eb,
|
|
struct btrfs_disk_key *disk_key, int nr)
|
|
{
|
|
struct btrfs_item *item = btrfs_item_nr(nr);
|
|
write_eb_member(eb, item, struct btrfs_item, key, disk_key);
|
|
}
|
|
|
|
BTRFS_SETGET_FUNCS(dir_log_end, struct btrfs_dir_log_item, end, 64);
|
|
|
|
/*
|
|
* struct btrfs_root_ref
|
|
*/
|
|
BTRFS_SETGET_FUNCS(root_ref_dirid, struct btrfs_root_ref, dirid, 64);
|
|
BTRFS_SETGET_FUNCS(root_ref_sequence, struct btrfs_root_ref, sequence, 64);
|
|
BTRFS_SETGET_FUNCS(root_ref_name_len, struct btrfs_root_ref, name_len, 16);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(stack_root_ref_dirid, struct btrfs_root_ref, dirid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_root_ref_sequence, struct btrfs_root_ref, sequence, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_root_ref_name_len, struct btrfs_root_ref, name_len, 16);
|
|
|
|
/* struct btrfs_dir_item */
|
|
BTRFS_SETGET_FUNCS(dir_data_len, struct btrfs_dir_item, data_len, 16);
|
|
BTRFS_SETGET_FUNCS(dir_type, struct btrfs_dir_item, type, 8);
|
|
BTRFS_SETGET_FUNCS(dir_name_len, struct btrfs_dir_item, name_len, 16);
|
|
BTRFS_SETGET_FUNCS(dir_transid, struct btrfs_dir_item, transid, 64);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dir_data_len, struct btrfs_dir_item, data_len, 16);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dir_type, struct btrfs_dir_item, type, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dir_name_len, struct btrfs_dir_item, name_len, 16);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_dir_transid, struct btrfs_dir_item, transid, 64);
|
|
|
|
static inline void btrfs_dir_item_key(struct extent_buffer *eb,
|
|
struct btrfs_dir_item *item,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
read_eb_member(eb, item, struct btrfs_dir_item, location, key);
|
|
}
|
|
|
|
static inline void btrfs_set_dir_item_key(struct extent_buffer *eb,
|
|
struct btrfs_dir_item *item,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
write_eb_member(eb, item, struct btrfs_dir_item, location, key);
|
|
}
|
|
|
|
/* struct btrfs_free_space_header */
|
|
BTRFS_SETGET_FUNCS(free_space_entries, struct btrfs_free_space_header,
|
|
num_entries, 64);
|
|
BTRFS_SETGET_FUNCS(free_space_bitmaps, struct btrfs_free_space_header,
|
|
num_bitmaps, 64);
|
|
BTRFS_SETGET_FUNCS(free_space_generation, struct btrfs_free_space_header,
|
|
generation, 64);
|
|
|
|
static inline void btrfs_free_space_key(struct extent_buffer *eb,
|
|
struct btrfs_free_space_header *h,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
read_eb_member(eb, h, struct btrfs_free_space_header, location, key);
|
|
}
|
|
|
|
static inline void btrfs_set_free_space_key(struct extent_buffer *eb,
|
|
struct btrfs_free_space_header *h,
|
|
struct btrfs_disk_key *key)
|
|
{
|
|
write_eb_member(eb, h, struct btrfs_free_space_header, location, key);
|
|
}
|
|
|
|
/* struct btrfs_disk_key */
|
|
BTRFS_SETGET_STACK_FUNCS(disk_key_objectid, struct btrfs_disk_key,
|
|
objectid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(disk_key_offset, struct btrfs_disk_key, offset, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(disk_key_type, struct btrfs_disk_key, type, 8);
|
|
|
|
static inline void btrfs_disk_key_to_cpu(struct btrfs_key *cpu,
|
|
struct btrfs_disk_key *disk)
|
|
{
|
|
cpu->offset = le64_to_cpu(disk->offset);
|
|
cpu->type = disk->type;
|
|
cpu->objectid = le64_to_cpu(disk->objectid);
|
|
}
|
|
|
|
static inline void btrfs_cpu_key_to_disk(struct btrfs_disk_key *disk,
|
|
const struct btrfs_key *cpu)
|
|
{
|
|
disk->offset = cpu_to_le64(cpu->offset);
|
|
disk->type = cpu->type;
|
|
disk->objectid = cpu_to_le64(cpu->objectid);
|
|
}
|
|
|
|
static inline void btrfs_node_key_to_cpu(struct extent_buffer *eb,
|
|
struct btrfs_key *key, int nr)
|
|
{
|
|
struct btrfs_disk_key disk_key;
|
|
btrfs_node_key(eb, &disk_key, nr);
|
|
btrfs_disk_key_to_cpu(key, &disk_key);
|
|
}
|
|
|
|
static inline void btrfs_item_key_to_cpu(struct extent_buffer *eb,
|
|
struct btrfs_key *key, int nr)
|
|
{
|
|
struct btrfs_disk_key disk_key;
|
|
btrfs_item_key(eb, &disk_key, nr);
|
|
btrfs_disk_key_to_cpu(key, &disk_key);
|
|
}
|
|
|
|
static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb,
|
|
struct btrfs_dir_item *item,
|
|
struct btrfs_key *key)
|
|
{
|
|
struct btrfs_disk_key disk_key;
|
|
btrfs_dir_item_key(eb, item, &disk_key);
|
|
btrfs_disk_key_to_cpu(key, &disk_key);
|
|
}
|
|
|
|
/* struct btrfs_header */
|
|
BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header,
|
|
generation, 64);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_owner, struct btrfs_header, owner, 64);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_nritems, struct btrfs_header, nritems, 32);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_flags, struct btrfs_header, flags, 64);
|
|
BTRFS_SETGET_HEADER_FUNCS(header_level, struct btrfs_header, level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_header_bytenr, struct btrfs_header, bytenr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_header_nritems, struct btrfs_header, nritems,
|
|
32);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_header_owner, struct btrfs_header, owner, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_header_generation, struct btrfs_header,
|
|
generation, 64);
|
|
|
|
static inline int btrfs_header_flag(struct extent_buffer *eb, u64 flag)
|
|
{
|
|
return (btrfs_header_flags(eb) & flag) == flag;
|
|
}
|
|
|
|
static inline int btrfs_set_header_flag(struct extent_buffer *eb, u64 flag)
|
|
{
|
|
u64 flags = btrfs_header_flags(eb);
|
|
btrfs_set_header_flags(eb, flags | flag);
|
|
return (flags & flag) == flag;
|
|
}
|
|
|
|
static inline int btrfs_clear_header_flag(struct extent_buffer *eb, u64 flag)
|
|
{
|
|
u64 flags = btrfs_header_flags(eb);
|
|
btrfs_set_header_flags(eb, flags & ~flag);
|
|
return (flags & flag) == flag;
|
|
}
|
|
|
|
static inline int btrfs_header_backref_rev(struct extent_buffer *eb)
|
|
{
|
|
u64 flags = btrfs_header_flags(eb);
|
|
return flags >> BTRFS_BACKREF_REV_SHIFT;
|
|
}
|
|
|
|
static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb,
|
|
int rev)
|
|
{
|
|
u64 flags = btrfs_header_flags(eb);
|
|
flags &= ~BTRFS_BACKREF_REV_MASK;
|
|
flags |= (u64)rev << BTRFS_BACKREF_REV_SHIFT;
|
|
btrfs_set_header_flags(eb, flags);
|
|
}
|
|
|
|
static inline unsigned long btrfs_header_fsid(void)
|
|
{
|
|
return offsetof(struct btrfs_header, fsid);
|
|
}
|
|
|
|
static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb)
|
|
{
|
|
return offsetof(struct btrfs_header, chunk_tree_uuid);
|
|
}
|
|
|
|
static inline u8 *btrfs_header_csum(struct extent_buffer *eb)
|
|
{
|
|
unsigned long ptr = offsetof(struct btrfs_header, csum);
|
|
return (u8 *)ptr;
|
|
}
|
|
|
|
static inline int btrfs_is_leaf(struct extent_buffer *eb)
|
|
{
|
|
return (btrfs_header_level(eb) == 0);
|
|
}
|
|
|
|
/* struct btrfs_root_item */
|
|
BTRFS_SETGET_FUNCS(disk_root_generation, struct btrfs_root_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(disk_root_refs, struct btrfs_root_item, refs, 32);
|
|
BTRFS_SETGET_FUNCS(disk_root_bytenr, struct btrfs_root_item, bytenr, 64);
|
|
BTRFS_SETGET_FUNCS(disk_root_level, struct btrfs_root_item, level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(root_generation, struct btrfs_root_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_bytenr, struct btrfs_root_item, bytenr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_level, struct btrfs_root_item, level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(root_dirid, struct btrfs_root_item, root_dirid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_refs, struct btrfs_root_item, refs, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(root_flags, struct btrfs_root_item, flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_used, struct btrfs_root_item, bytes_used, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_limit, struct btrfs_root_item, byte_limit, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_last_snapshot, struct btrfs_root_item,
|
|
last_snapshot, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_generation_v2, struct btrfs_root_item,
|
|
generation_v2, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_ctransid, struct btrfs_root_item,
|
|
ctransid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_otransid, struct btrfs_root_item,
|
|
otransid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_stransid, struct btrfs_root_item,
|
|
stransid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(root_rtransid, struct btrfs_root_item,
|
|
rtransid, 64);
|
|
|
|
static inline struct btrfs_timespec* btrfs_root_ctime(
|
|
struct btrfs_root_item *root_item)
|
|
{
|
|
unsigned long ptr = (unsigned long)root_item;
|
|
ptr += offsetof(struct btrfs_root_item, ctime);
|
|
return (struct btrfs_timespec *)ptr;
|
|
}
|
|
|
|
static inline struct btrfs_timespec* btrfs_root_otime(
|
|
struct btrfs_root_item *root_item)
|
|
{
|
|
unsigned long ptr = (unsigned long)root_item;
|
|
ptr += offsetof(struct btrfs_root_item, otime);
|
|
return (struct btrfs_timespec *)ptr;
|
|
}
|
|
|
|
static inline struct btrfs_timespec* btrfs_root_stime(
|
|
struct btrfs_root_item *root_item)
|
|
{
|
|
unsigned long ptr = (unsigned long)root_item;
|
|
ptr += offsetof(struct btrfs_root_item, stime);
|
|
return (struct btrfs_timespec *)ptr;
|
|
}
|
|
|
|
static inline struct btrfs_timespec* btrfs_root_rtime(
|
|
struct btrfs_root_item *root_item)
|
|
{
|
|
unsigned long ptr = (unsigned long)root_item;
|
|
ptr += offsetof(struct btrfs_root_item, rtime);
|
|
return (struct btrfs_timespec *)ptr;
|
|
}
|
|
|
|
/* struct btrfs_root_backup */
|
|
BTRFS_SETGET_STACK_FUNCS(backup_tree_root, struct btrfs_root_backup,
|
|
tree_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_tree_root_gen, struct btrfs_root_backup,
|
|
tree_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_tree_root_level, struct btrfs_root_backup,
|
|
tree_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_chunk_root, struct btrfs_root_backup,
|
|
chunk_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_gen, struct btrfs_root_backup,
|
|
chunk_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_chunk_root_level, struct btrfs_root_backup,
|
|
chunk_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_extent_root, struct btrfs_root_backup,
|
|
extent_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_extent_root_gen, struct btrfs_root_backup,
|
|
extent_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_extent_root_level, struct btrfs_root_backup,
|
|
extent_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_fs_root, struct btrfs_root_backup,
|
|
fs_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_fs_root_gen, struct btrfs_root_backup,
|
|
fs_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_fs_root_level, struct btrfs_root_backup,
|
|
fs_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_dev_root, struct btrfs_root_backup,
|
|
dev_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_dev_root_gen, struct btrfs_root_backup,
|
|
dev_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_dev_root_level, struct btrfs_root_backup,
|
|
dev_root_level, 8);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(backup_csum_root, struct btrfs_root_backup,
|
|
csum_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_csum_root_gen, struct btrfs_root_backup,
|
|
csum_root_gen, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_csum_root_level, struct btrfs_root_backup,
|
|
csum_root_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_total_bytes, struct btrfs_root_backup,
|
|
total_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_bytes_used, struct btrfs_root_backup,
|
|
bytes_used, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(backup_num_devices, struct btrfs_root_backup,
|
|
num_devices, 64);
|
|
|
|
/* struct btrfs_super_block */
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(super_bytenr, struct btrfs_super_block, bytenr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_flags, struct btrfs_super_block, flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_generation, struct btrfs_super_block,
|
|
generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_root, struct btrfs_super_block, root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_sys_array_size,
|
|
struct btrfs_super_block, sys_chunk_array_size, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(super_chunk_root_generation,
|
|
struct btrfs_super_block, chunk_root_generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_root_level, struct btrfs_super_block,
|
|
root_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(super_chunk_root, struct btrfs_super_block,
|
|
chunk_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block,
|
|
chunk_root_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block,
|
|
log_root, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block,
|
|
log_root_transid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block,
|
|
log_root_level, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block,
|
|
total_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_bytes_used, struct btrfs_super_block,
|
|
bytes_used, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_sectorsize, struct btrfs_super_block,
|
|
sectorsize, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(super_nodesize, struct btrfs_super_block,
|
|
nodesize, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block,
|
|
stripesize, 32);
|
|
BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block,
|
|
root_dir_objectid, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block,
|
|
num_devices, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_compat_flags, struct btrfs_super_block,
|
|
compat_flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_compat_ro_flags, struct btrfs_super_block,
|
|
compat_ro_flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_incompat_flags, struct btrfs_super_block,
|
|
incompat_flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_csum_type, struct btrfs_super_block,
|
|
csum_type, 16);
|
|
BTRFS_SETGET_STACK_FUNCS(super_cache_generation, struct btrfs_super_block,
|
|
cache_generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_uuid_tree_generation, struct btrfs_super_block,
|
|
uuid_tree_generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(super_magic, struct btrfs_super_block, magic, 64);
|
|
|
|
static inline unsigned long btrfs_leaf_data(struct extent_buffer *l)
|
|
{
|
|
return offsetof(struct btrfs_leaf, items);
|
|
}
|
|
|
|
/* struct btrfs_file_extent_item */
|
|
BTRFS_SETGET_FUNCS(file_extent_type, struct btrfs_file_extent_item, type, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_type, struct btrfs_file_extent_item, type, 8);
|
|
|
|
static inline unsigned long btrfs_file_extent_inline_start(struct
|
|
btrfs_file_extent_item *e)
|
|
{
|
|
unsigned long offset = (unsigned long)e;
|
|
offset += offsetof(struct btrfs_file_extent_item, disk_bytenr);
|
|
return offset;
|
|
}
|
|
|
|
static inline u32 btrfs_file_extent_calc_inline_size(u32 datasize)
|
|
{
|
|
return offsetof(struct btrfs_file_extent_item, disk_bytenr) + datasize;
|
|
}
|
|
|
|
BTRFS_SETGET_FUNCS(file_extent_disk_bytenr, struct btrfs_file_extent_item,
|
|
disk_bytenr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_disk_bytenr, struct btrfs_file_extent_item,
|
|
disk_bytenr, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_generation, struct btrfs_file_extent_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_generation, struct btrfs_file_extent_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_disk_num_bytes, struct btrfs_file_extent_item,
|
|
disk_num_bytes, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_offset, struct btrfs_file_extent_item,
|
|
offset, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_offset, struct btrfs_file_extent_item,
|
|
offset, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_num_bytes, struct btrfs_file_extent_item,
|
|
num_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_num_bytes, struct btrfs_file_extent_item,
|
|
num_bytes, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_ram_bytes, struct btrfs_file_extent_item,
|
|
ram_bytes, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_ram_bytes, struct btrfs_file_extent_item,
|
|
ram_bytes, 64);
|
|
BTRFS_SETGET_FUNCS(file_extent_compression, struct btrfs_file_extent_item,
|
|
compression, 8);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_file_extent_compression, struct btrfs_file_extent_item,
|
|
compression, 8);
|
|
BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item,
|
|
encryption, 8);
|
|
BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item,
|
|
other_encoding, 16);
|
|
|
|
/* btrfs_qgroup_status_item */
|
|
BTRFS_SETGET_FUNCS(qgroup_status_version, struct btrfs_qgroup_status_item,
|
|
version, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_status_generation, struct btrfs_qgroup_status_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_status_flags, struct btrfs_qgroup_status_item,
|
|
flags, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_status_rescan, struct btrfs_qgroup_status_item,
|
|
rescan, 64);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_version,
|
|
struct btrfs_qgroup_status_item, version, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_generation,
|
|
struct btrfs_qgroup_status_item, generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_flags,
|
|
struct btrfs_qgroup_status_item, flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_status_rescan,
|
|
struct btrfs_qgroup_status_item, rescan, 64);
|
|
|
|
/* btrfs_qgroup_info_item */
|
|
BTRFS_SETGET_FUNCS(qgroup_info_generation, struct btrfs_qgroup_info_item,
|
|
generation, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_info_referenced, struct btrfs_qgroup_info_item,
|
|
rfer, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_info_referenced_compressed,
|
|
struct btrfs_qgroup_info_item, rfer_cmpr, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_info_exclusive, struct btrfs_qgroup_info_item,
|
|
excl, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_info_exclusive_compressed,
|
|
struct btrfs_qgroup_info_item, excl_cmpr, 64);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_generation,
|
|
struct btrfs_qgroup_info_item, generation, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_referenced,
|
|
struct btrfs_qgroup_info_item, rfer, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_referenced_compressed,
|
|
struct btrfs_qgroup_info_item, rfer_cmpr, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_exclusive,
|
|
struct btrfs_qgroup_info_item, excl, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_exclusive_compressed,
|
|
struct btrfs_qgroup_info_item, excl_cmpr, 64);
|
|
|
|
/* btrfs_qgroup_limit_item */
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_flags, struct btrfs_qgroup_limit_item,
|
|
flags, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_max_referenced, struct btrfs_qgroup_limit_item,
|
|
max_rfer, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_max_exclusive, struct btrfs_qgroup_limit_item,
|
|
max_excl, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_rsv_referenced, struct btrfs_qgroup_limit_item,
|
|
rsv_rfer, 64);
|
|
BTRFS_SETGET_FUNCS(qgroup_limit_rsv_exclusive, struct btrfs_qgroup_limit_item,
|
|
rsv_excl, 64);
|
|
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_flags,
|
|
struct btrfs_qgroup_limit_item, flags, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_referenced,
|
|
struct btrfs_qgroup_limit_item, max_rfer, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_exclusive,
|
|
struct btrfs_qgroup_limit_item, max_excl, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_referenced,
|
|
struct btrfs_qgroup_limit_item, rsv_rfer, 64);
|
|
BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_exclusive,
|
|
struct btrfs_qgroup_limit_item, rsv_excl, 64);
|
|
|
|
/* btrfs_balance_item */
|
|
BTRFS_SETGET_FUNCS(balance_item_flags, struct btrfs_balance_item, flags, 64);
|
|
|
|
static inline struct btrfs_disk_balance_args* btrfs_balance_item_data(
|
|
struct extent_buffer *eb, struct btrfs_balance_item *bi)
|
|
{
|
|
unsigned long offset = (unsigned long)bi;
|
|
struct btrfs_balance_item *p;
|
|
p = (struct btrfs_balance_item *)(eb->data + offset);
|
|
return &p->data;
|
|
}
|
|
|
|
static inline struct btrfs_disk_balance_args* btrfs_balance_item_meta(
|
|
struct extent_buffer *eb, struct btrfs_balance_item *bi)
|
|
{
|
|
unsigned long offset = (unsigned long)bi;
|
|
struct btrfs_balance_item *p;
|
|
p = (struct btrfs_balance_item *)(eb->data + offset);
|
|
return &p->meta;
|
|
}
|
|
|
|
static inline struct btrfs_disk_balance_args* btrfs_balance_item_sys(
|
|
struct extent_buffer *eb, struct btrfs_balance_item *bi)
|
|
{
|
|
unsigned long offset = (unsigned long)bi;
|
|
struct btrfs_balance_item *p;
|
|
p = (struct btrfs_balance_item *)(eb->data + offset);
|
|
return &p->sys;
|
|
}
|
|
|
|
static inline u64 btrfs_dev_stats_value(const struct extent_buffer *eb,
|
|
const struct btrfs_dev_stats_item *ptr,
|
|
int index)
|
|
{
|
|
u64 val;
|
|
|
|
read_extent_buffer(eb, &val,
|
|
offsetof(struct btrfs_dev_stats_item, values) +
|
|
((unsigned long)ptr) + (index * sizeof(u64)),
|
|
sizeof(val));
|
|
return val;
|
|
}
|
|
|
|
/*
|
|
* this 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(struct extent_buffer *eb,
|
|
struct btrfs_item *e)
|
|
{
|
|
unsigned long offset;
|
|
offset = offsetof(struct btrfs_file_extent_item, disk_bytenr);
|
|
return btrfs_item_size(eb, e) - offset;
|
|
}
|
|
|
|
#define btrfs_fs_incompat(fs_info, opt) \
|
|
__btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt)
|
|
|
|
static inline bool __btrfs_fs_incompat(struct btrfs_fs_info *fs_info, u64 flag)
|
|
{
|
|
struct btrfs_super_block *disk_super;
|
|
disk_super = fs_info->super_copy;
|
|
return !!(btrfs_super_incompat_flags(disk_super) & flag);
|
|
}
|
|
|
|
#define btrfs_fs_compat_ro(fs_info, opt) \
|
|
__btrfs_fs_compat_ro((fs_info), BTRFS_FEATURE_COMPAT_RO_##opt)
|
|
|
|
static inline int __btrfs_fs_compat_ro(struct btrfs_fs_info *fs_info, u64 flag)
|
|
{
|
|
struct btrfs_super_block *disk_super;
|
|
disk_super = fs_info->super_copy;
|
|
return !!(btrfs_super_compat_ro_flags(disk_super) & flag);
|
|
}
|
|
|
|
/* helper function to cast into the data area of the leaf. */
|
|
#define btrfs_item_ptr(leaf, slot, type) \
|
|
((type *)(btrfs_leaf_data(leaf) + \
|
|
btrfs_item_offset_nr(leaf, slot)))
|
|
|
|
#define btrfs_item_ptr_offset(leaf, slot) \
|
|
((unsigned long)(btrfs_leaf_data(leaf) + \
|
|
btrfs_item_offset_nr(leaf, slot)))
|
|
|
|
static inline u64 btrfs_name_hash(const char *name, int len)
|
|
{
|
|
return (u64)crc32c((u32)~1, (u8 *)name, len);
|
|
}
|
|
|
|
/*
|
|
* Figure the key offset of an extended inode ref
|
|
*/
|
|
static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name,
|
|
int len)
|
|
{
|
|
return crc32(parent_objectid, (u8 *)name, len);
|
|
}
|
|
|
|
union btrfs_tree_node {
|
|
struct btrfs_header header;
|
|
struct btrfs_leaf leaf;
|
|
struct btrfs_node node;
|
|
};
|
|
|
|
struct __btrfs_path {
|
|
union btrfs_tree_node *nodes[BTRFS_MAX_LEVEL];
|
|
u32 slots[BTRFS_MAX_LEVEL];
|
|
};
|
|
|
|
struct __btrfs_root {
|
|
u64 objectid;
|
|
u64 bytenr;
|
|
u64 root_dirid;
|
|
};
|
|
|
|
int __btrfs_comp_keys(struct btrfs_key *, struct btrfs_key *);
|
|
int btrfs_comp_keys_type(struct btrfs_key *, struct btrfs_key *);
|
|
int __btrfs_bin_search(union btrfs_tree_node *, struct btrfs_key *, int *);
|
|
void __btrfs_free_path(struct __btrfs_path *);
|
|
int btrfs_search_tree(const struct __btrfs_root *, struct btrfs_key *,
|
|
struct __btrfs_path *);
|
|
int btrfs_prev_slot(struct __btrfs_path *);
|
|
int btrfs_next_slot(struct __btrfs_path *);
|
|
|
|
static inline struct btrfs_key *btrfs_path_leaf_key(struct __btrfs_path *p) {
|
|
/* At tree read time we have converted the endian for btrfs_disk_key */
|
|
return (struct btrfs_key *)&p->nodes[0]->leaf.items[p->slots[0]].key;
|
|
}
|
|
|
|
static inline struct btrfs_key *
|
|
btrfs_search_tree_key_type(const struct __btrfs_root *root, u64 objectid,
|
|
u8 type, struct __btrfs_path *path)
|
|
{
|
|
struct btrfs_key key, *res;
|
|
|
|
key.objectid = objectid;
|
|
key.type = type;
|
|
key.offset = 0;
|
|
|
|
if (btrfs_search_tree(root, &key, path))
|
|
return NULL;
|
|
|
|
res = btrfs_path_leaf_key(path);
|
|
if (btrfs_comp_keys_type(&key, res)) {
|
|
__btrfs_free_path(path);
|
|
return NULL;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static inline u32 btrfs_path_item_size(struct __btrfs_path *p)
|
|
{
|
|
return p->nodes[0]->leaf.items[p->slots[0]].size;
|
|
}
|
|
|
|
static inline void *__btrfs_leaf_data(struct btrfs_leaf *leaf, u32 slot)
|
|
{
|
|
return ((u8 *) leaf) + sizeof(struct btrfs_header)
|
|
+ leaf->items[slot].offset;
|
|
}
|
|
|
|
static inline void *btrfs_path_leaf_data(struct __btrfs_path *p)
|
|
{
|
|
return __btrfs_leaf_data(&p->nodes[0]->leaf, p->slots[0]);
|
|
}
|
|
|
|
#define btrfs_path_item_ptr(p,t) \
|
|
((t *) btrfs_path_leaf_data((p)))
|
|
|
|
u16 btrfs_super_csum_size(const struct btrfs_super_block *s);
|
|
const char *btrfs_super_csum_name(u16 csum_type);
|
|
u16 btrfs_csum_type_size(u16 csum_type);
|
|
size_t btrfs_super_num_csums(void);
|
|
|
|
/* root-tree.c */
|
|
int btrfs_find_last_root(struct btrfs_root *root, u64 objectid,
|
|
struct btrfs_root_item *item, struct btrfs_key *key);
|
|
|
|
/* dir-item.c */
|
|
struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root,
|
|
struct btrfs_path *path, u64 dir,
|
|
const char *name, int name_len,
|
|
int mod);
|
|
|
|
/* ctree.c */
|
|
int btrfs_comp_cpu_keys(const struct btrfs_key *k1, const struct btrfs_key *k2);
|
|
enum btrfs_tree_block_status
|
|
btrfs_check_node(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_disk_key *parent_key, struct extent_buffer *buf);
|
|
enum btrfs_tree_block_status
|
|
btrfs_check_leaf(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_disk_key *parent_key, struct extent_buffer *buf);
|
|
struct extent_buffer *read_node_slot(struct btrfs_fs_info *fs_info,
|
|
struct extent_buffer *parent, int slot);
|
|
int btrfs_previous_item(struct btrfs_root *root,
|
|
struct btrfs_path *path, u64 min_objectid,
|
|
int type);
|
|
int btrfs_next_sibling_tree_block(struct btrfs_fs_info *fs_info,
|
|
struct btrfs_path *path);
|
|
/*
|
|
* Walk up the tree as far as necessary to find the next leaf.
|
|
*
|
|
* returns 0 if it found something or 1 if there are no greater leaves.
|
|
* returns < 0 on io errors.
|
|
*/
|
|
static inline int btrfs_next_leaf(struct btrfs_root *root,
|
|
struct btrfs_path *path)
|
|
{
|
|
path->lowest_level = 0;
|
|
return btrfs_next_sibling_tree_block(root->fs_info, path);
|
|
}
|
|
|
|
static inline int btrfs_next_item(struct btrfs_root *root,
|
|
struct btrfs_path *p)
|
|
{
|
|
++p->slots[0];
|
|
if (p->slots[0] >= btrfs_header_nritems(p->nodes[0]))
|
|
return btrfs_next_leaf(root, p);
|
|
return 0;
|
|
}
|
|
|
|
int btrfs_prev_leaf(struct btrfs_root *root, struct btrfs_path *path);
|
|
int btrfs_leaf_free_space(struct extent_buffer *leaf);
|
|
int btrfs_search_slot(struct btrfs_trans_handle *trans,
|
|
struct btrfs_root *root, const struct btrfs_key *key,
|
|
struct btrfs_path *p, int ins_len, int cow);
|
|
int btrfs_search_slot_for_read(struct btrfs_root *root,
|
|
const struct btrfs_key *key,
|
|
struct btrfs_path *p, int find_higher,
|
|
int return_any);
|
|
void btrfs_release_path(struct btrfs_path *p);
|
|
struct btrfs_path *btrfs_alloc_path(void);
|
|
void btrfs_free_path(struct btrfs_path *p);
|
|
static inline void btrfs_init_path(struct btrfs_path *p)
|
|
{
|
|
memset(p, 0, sizeof(*p));
|
|
}
|
|
int btrfs_bin_search(struct extent_buffer *eb, const struct btrfs_key *key,
|
|
int *slot);
|
|
int btrfs_find_item(struct btrfs_root *fs_root, struct btrfs_path *found_path,
|
|
u64 iobjectid, u64 ioff, u8 key_type,
|
|
struct btrfs_key *found_key);
|
|
#endif /* __BTRFS_CTREE_H__ */
|