#ifndef __BTRFS_CTREE_H__
#define __BTRFS_CTREE_H__
+#include <stdbool.h>
+
#if BTRFS_FLAT_INCLUDES
#include "list.h"
#include "kerncompat.h"
*/
#define BTRFS_DEV_ITEMS_OBJECTID 1ULL
+#define BTRFS_EMPTY_SUBVOL_DIR_OBJECTID 2ULL
+
/*
* the max metadata block size. This limit is somewhat artificial,
* but the memmove costs go through the roof for larger blocks.
u8 level;
} __attribute__ ((__packed__));
-#define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->nodesize - \
+#define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->fs_info->nodesize - \
sizeof(struct btrfs_header)) / \
sizeof(struct btrfs_key_ptr))
#define __BTRFS_LEAF_DATA_SIZE(bs) ((bs) - sizeof(struct btrfs_header))
-#define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->nodesize))
+#define BTRFS_LEAF_DATA_SIZE(r) (__BTRFS_LEAF_DATA_SIZE(r->fs_info->nodesize))
#define BTRFS_MAX_INLINE_DATA_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
sizeof(struct btrfs_item) - \
sizeof(struct btrfs_file_extent_item))
#define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1)
#define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2)
#define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3)
-
-/*
- * some patches floated around with a second compression method
- * lets save that incompat here for when they do get in
- * Note we don't actually support it, we're just reserving the
- * number
- */
-#define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2 (1ULL << 4)
+#define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4)
/*
* older kernels tried to do bigger metadata blocks, but the
(BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \
BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \
BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \
+ BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \
BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \
BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \
BTRFS_FEATURE_INCOMPAT_RAID56 | \
BTRFS_COMPRESS_NONE = 0,
BTRFS_COMPRESS_ZLIB = 1,
BTRFS_COMPRESS_LZO = 2,
- BTRFS_COMPRESS_TYPES = 2,
- BTRFS_COMPRESS_LAST = 3,
+ BTRFS_COMPRESS_ZSTD = 3,
+ BTRFS_COMPRESS_TYPES = 3,
+ BTRFS_COMPRESS_LAST = 4,
} btrfs_compression_type;
/* we don't understand any encryption methods right now */
struct btrfs_fs_devices *fs_devices;
struct list_head space_info;
- int system_allocs;
+ unsigned int system_allocs:1;
unsigned int readonly:1;
unsigned int on_restoring:1;
unsigned int is_chunk_recover:1;
unsigned int avoid_sys_chunk_alloc:1;
unsigned int finalize_on_close:1;
+ int transaction_aborted;
+
int (*free_extent_hook)(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 bytenr, u64 num_bytes, u64 parent,
struct cache_tree *fsck_extent_cache;
struct cache_tree *corrupt_blocks;
+ /* Cached block sizes */
+ u32 nodesize;
+ u32 sectorsize;
+ u32 stripesize;
};
/*
u64 objectid;
u64 last_trans;
- /* data allocations are done in sectorsize units */
- u32 sectorsize;
-
- /* node allocations are done in nodesize units */
- u32 nodesize;
-
- /* leaf allocations are done in nodesize units */
- u32 stripesize;
-
int ref_cows;
int track_dirty;
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_add_block_group(struct btrfs_fs_info *fs_info, u64 bytes_used, u64 type,
u64 chunk_objectid, u64 chunk_offset, u64 size);
int btrfs_make_block_group(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 bytes_used,
+ struct btrfs_fs_info *fs_info, u64 bytes_used,
u64 type, u64 chunk_objectid, u64 chunk_offset,
u64 size);
int btrfs_make_block_groups(struct btrfs_trans_handle *trans,
- struct btrfs_root *root);
+ struct btrfs_fs_info *fs_info);
int btrfs_update_block_group(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 bytenr, u64 num,
int alloc, int mark_free);
struct extent_buffer *buf);
void reada_for_search(struct btrfs_root *root, struct btrfs_path *path,
int level, int slot, u64 objectid);
-struct extent_buffer *read_node_slot(struct btrfs_root *root,
+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,
u64 num_bytes);
int btrfs_insert_inline_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 objectid,
- u64 offset, char *buffer, size_t size);
+ u64 offset, const char *buffer, size_t size);
int btrfs_csum_file_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 alloc_end,
u64 bytenr, char *data, size_t len);
struct btrfs_root *root, u64 ino, u64 flags);
int btrfs_add_link(struct btrfs_trans_handle *trans, struct btrfs_root *root,
u64 ino, u64 parent_ino, char *name, int namelen,
- u8 type, u64 *index, int add_backref);
+ u8 type, u64 *index, int add_backref, int ignore_existed);
int btrfs_unlink(struct btrfs_trans_handle *trans, struct btrfs_root *root,
u64 ino, u64 parent_ino, u64 index, const char *name,
int namelen, int add_orphan);
u64 ino);
int btrfs_mkdir(struct btrfs_trans_handle *trans, struct btrfs_root *root,
char *name, int namelen, u64 parent_ino, u64 *ino, int mode);
+struct btrfs_root *btrfs_mksubvol(struct btrfs_root *root, const char *base,
+ u64 root_objectid, bool convert);
/* file.c */
int btrfs_get_extent(struct btrfs_trans_handle *trans,
projects / platform / upstream / btrfs-progs.git / blobdiff