#ifndef __BTRFS_CTREE_H__
#define __BTRFS_CTREE_H__
+#include <stdbool.h>
+
#if BTRFS_FLAT_INCLUDES
#include "list.h"
#include "kerncompat.h"
u8 level;
} __attribute__ ((__packed__));
-#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->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_MAX_XATTR_SIZE(r) (BTRFS_LEAF_DATA_SIZE(r) - \
- sizeof(struct btrfs_item) -\
- sizeof(struct btrfs_dir_item))
-
+#define BTRFS_LEAF_DATA_SIZE(fs_info) \
+ (__BTRFS_LEAF_DATA_SIZE(fs_info->nodesize))
/*
* this is a very generous portion of the super block, giving us
#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 | \
__le32 refs;
} __attribute__ ((__packed__));
-#define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r) >> 4) - \
+#define BTRFS_MAX_EXTENT_ITEM_SIZE(r) \
+ ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \
sizeof(struct btrfs_item))
#define BTRFS_MAX_EXTENT_SIZE SZ_128M
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 rb_node rb_node;
};
+static inline u32 BTRFS_MAX_ITEM_SIZE(const struct btrfs_fs_info *info)
+{
+ return BTRFS_LEAF_DATA_SIZE(info) - sizeof(struct btrfs_item);
+}
+
+static inline u32 BTRFS_NODEPTRS_PER_BLOCK(const struct btrfs_fs_info *info)
+{
+ return BTRFS_LEAF_DATA_SIZE(info) / sizeof(struct btrfs_key_ptr);
+}
+
+#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;
+}
+
+static inline u32 BTRFS_MAX_XATTR_SIZE(const struct btrfs_fs_info *info)
+{
+ return BTRFS_MAX_ITEM_SIZE(info) - sizeof(struct btrfs_dir_item);
+}
+
/*
* inode items have the data typically returned from stat and store other
* info about object characteristics. There is one for every file and dir in
return btrfs_item_end(eb, btrfs_item_nr(nr));
}
-static inline u32 btrfs_item_offset_nr(struct extent_buffer *eb, int nr)
+static inline u32 btrfs_item_offset_nr(const struct extent_buffer *eb, int nr)
{
return btrfs_item_offset(eb, btrfs_item_nr(nr));
}
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);
struct btrfs_root *root,
u64 num_bytes, u64 empty_size,
u64 hint_byte, u64 search_end,
- struct btrfs_key *ins, int data);
+ struct btrfs_key *ins, bool is_data);
int btrfs_fix_block_accounting(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
void btrfs_pin_extent(struct btrfs_fs_info *fs_info, u64 bytenr, u64 num_bytes);
u32 blocksize, u64 root_objectid,
struct btrfs_disk_key *key, int level,
u64 hint, u64 empty_size);
-int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- u64 num_bytes, u64 parent,
- u64 root_objectid, u64 ref_generation,
- u64 owner, u64 empty_size, u64 hint_byte,
- u64 search_end, struct btrfs_key *ins, int data);
int btrfs_lookup_extent_info(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 bytenr,
u64 offset, int metadata, u64 *refs, u64 *flags);
int btrfs_read_block_groups(struct btrfs_root *root);
struct btrfs_block_group_cache *
btrfs_add_block_group(struct btrfs_fs_info *fs_info, u64 bytes_used, u64 type,
- u64 chunk_objectid, u64 chunk_offset, u64 size);
+ u64 chunk_offset, u64 size);
int btrfs_make_block_group(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info, u64 bytes_used,
- u64 type, u64 chunk_objectid, u64 chunk_offset,
- u64 size);
+ u64 type, u64 chunk_offset, u64 size);
int btrfs_make_block_groups(struct btrfs_trans_handle *trans,
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 btrfs_update_block_group(struct btrfs_root *root, u64 bytenr, u64 num,
int alloc, int mark_free);
int btrfs_record_file_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 objectid,
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,