X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=ctree.h;h=fa861ba0b4c3348c92f5e1591d05effef622547a;hb=c41c5b1562c5a628f164a1d3d3d19a9c1f728bdf;hp=c53f65a8dc18ede0698785b06c461e52df70316b;hpb=47b104b7f17b37813244691829daf4302831acf1;p=platform%2Fupstream%2Fbtrfs-progs.git diff --git a/ctree.h b/ctree.h index c53f65a..fa861ba 100644 --- a/ctree.h +++ b/ctree.h @@ -16,19 +16,41 @@ * Boston, MA 021110-1307, USA. */ -#ifndef __BTRFS__ -#define __BTRFS__ +#ifndef __BTRFS_CTREE_H__ +#define __BTRFS_CTREE_H__ +#include + +#if BTRFS_FLAT_INCLUDES #include "list.h" #include "kerncompat.h" #include "radix-tree.h" #include "extent-cache.h" #include "extent_io.h" #include "ioctl.h" +#include "sizes.h" +#else +#include +#include +#include +#include +#include +#include +#include +#endif /* BTRFS_FLAT_INCLUDES */ struct btrfs_root; struct btrfs_trans_handle; -#define BTRFS_MAGIC "_BHRfS_M" +struct btrfs_free_space_ctl; +#define BTRFS_MAGIC 0x4D5F53665248425FULL /* ascii _BHRfS_M, no null */ + +/* + * Fake signature for an unfinalized filesystem, structures might be partially + * created or missing. + */ +#define BTRFS_MAGIC_PARTIAL 0x4D5F536652484221ULL /* ascii !BHRfS_M, no null */ + +#define BTRFS_MAX_MIRRORS 3 #define BTRFS_MAX_LEVEL 8 @@ -59,7 +81,16 @@ struct btrfs_trans_handle; #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL /* holds checksums of all the data extents */ #define BTRFS_CSUM_TREE_OBJECTID 7ULL +#define BTRFS_QUOTA_TREE_OBJECTID 8ULL + +/* for storing items that use the BTRFS_UUID_KEY* */ +#define BTRFS_UUID_TREE_OBJECTID 9ULL +/* tracks free space in block groups. */ +#define BTRFS_FREE_SPACE_TREE_OBJECTID 10ULL + +/* device stats in the device tree */ +#define BTRFS_DEV_STATS_OBJECTID 0ULL /* for storing balance parameters in the root tree */ #define BTRFS_BALANCE_OBJECTID -4ULL @@ -109,26 +140,36 @@ struct btrfs_trans_handle; */ #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. + */ +#define BTRFS_MAX_METADATA_BLOCKSIZE 65536 + /* * we can actually store much bigger names, but lets not confuse the rest * of linux */ #define BTRFS_NAME_LEN 255 +/* + * Theoretical limit is larger, but we keep this down to a sane + * value. That should limit greatly the possibility of collisions on + * inode ref items. + */ +#define BTRFS_LINK_MAX 65535U + /* 32 bytes in various csum fields */ #define BTRFS_CSUM_SIZE 32 /* csum types */ #define BTRFS_CSUM_TYPE_CRC32 0 - -/* csum types */ -#define BTRFS_CSUM_TYPE_CRC32 0 - -static int btrfs_csum_sizes[] = { 4, 0 }; - /* four bytes for CRC32 */ -#define BTRFS_CRC32_SIZE 4 +static int btrfs_csum_sizes[] = { 4 }; + #define BTRFS_EMPTY_DIR_SIZE 0 #define BTRFS_FT_UNKNOWN 0 @@ -142,9 +183,11 @@ static int btrfs_csum_sizes[] = { 4, 0 }; #define BTRFS_FT_XATTR 8 #define BTRFS_FT_MAX 9 +#define BTRFS_ROOT_SUBVOL_RDONLY (1ULL << 0) + /* * the key defines the order in the tree, and so it also defines (optimal) - * block layout. objectid corresonds to the inode number. The flags + * block layout. objectid corresponds to the inode number. The flags * tells us things about the object, and is a kind of stream selector. * so for a given inode, keys with flags of 1 might refer to the inode * data, flags of 2 may point to file data in the btree and flags == 3 @@ -200,7 +243,7 @@ struct btrfs_dev_item { /* * starting byte of this partition on the device, - * to allowr for stripe alignment in the future + * to allow for stripe alignment in the future */ __le64 start_offset; @@ -256,6 +299,22 @@ struct btrfs_chunk { /* additional stripes go here */ } __attribute__ ((__packed__)); +#define BTRFS_FREE_SPACE_EXTENT 1 +#define BTRFS_FREE_SPACE_BITMAP 2 + +struct btrfs_free_space_entry { + __le64 offset; + __le64 bytes; + u8 type; +} __attribute__ ((__packed__)); + +struct btrfs_free_space_header { + struct btrfs_disk_key location; + __le64 generation; + __le64 num_entries; + __le64 num_bitmaps; +} __attribute__ ((__packed__)); + static inline unsigned long btrfs_chunk_item_size(int num_stripes) { BUG_ON(num_stripes == 0); @@ -267,6 +326,8 @@ static inline unsigned long btrfs_chunk_item_size(int num_stripes) #define BTRFS_HEADER_FLAG_RELOC (1ULL << 1) #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32) #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33) +#define BTRFS_SUPER_FLAG_METADUMP_V2 (1ULL << 34) +#define BTRFS_SUPER_FLAG_CHANGING_FSID (1ULL << 35) #define BTRFS_BACKREF_REV_MAX 256 #define BTRFS_BACKREF_REV_SHIFT 56 @@ -294,18 +355,9 @@ struct btrfs_header { u8 level; } __attribute__ ((__packed__)); -#define BTRFS_NODEPTRS_PER_BLOCK(r) (((r)->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->leafsize)) -#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 @@ -381,7 +433,8 @@ struct btrfs_super_block { __le64 num_devices; __le32 sectorsize; __le32 nodesize; - __le32 leafsize; + /* Unused and must be equal to nodesize */ + __le32 __unused_leafsize; __le32 stripesize; __le32 sys_chunk_array_size; __le64 chunk_root_generation; @@ -397,9 +450,10 @@ struct btrfs_super_block { char label[BTRFS_LABEL_SIZE]; __le64 cache_generation; + __le64 uuid_tree_generation; /* future expansion */ - __le64 reserved[31]; + __le64 reserved[30]; u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; struct btrfs_root_backup super_roots[BTRFS_NUM_BACKUP_ROOTS]; } __attribute__ ((__packed__)); @@ -408,18 +462,52 @@ struct btrfs_super_block { * Compat flags that we support. If any incompat flags are set other than the * ones specified below then we will fail to mount */ +#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0) +/* + * Older kernels on big-endian systems produced broken free space tree bitmaps, + * and btrfs-progs also used to corrupt the free space tree. If this bit is + * clear, then the free space tree cannot be trusted. btrfs-progs can also + * intentionally clear this bit to ask the kernel to rebuild the free space + * tree. + */ +#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1) + #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) #define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) +#define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4) + +/* + * older kernels tried to do bigger metadata blocks, but the + * code was pretty buggy. Lets not let them try anymore. + */ +#define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5) +#define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6) +#define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7) +#define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8) +#define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9) #define BTRFS_FEATURE_COMPAT_SUPP 0ULL + +/* + * The FREE_SPACE_TREE and FREE_SPACE_TREE_VALID compat_ro bits must not be + * added here until read-write support for the free space tree is implemented in + * btrfs-progs. + */ #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL + #define BTRFS_FEATURE_INCOMPAT_SUPP \ (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ - BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) + BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD | \ + BTRFS_FEATURE_INCOMPAT_BIG_METADATA | \ + BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF | \ + BTRFS_FEATURE_INCOMPAT_RAID56 | \ + BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \ + BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \ + BTRFS_FEATURE_INCOMPAT_NO_HOLES) /* * A leaf is full of items. offset and size tell us where to find @@ -470,20 +558,20 @@ struct btrfs_node { struct btrfs_path { struct extent_buffer *nodes[BTRFS_MAX_LEVEL]; int slots[BTRFS_MAX_LEVEL]; - /* if there is real range locking, this locks field will change */ +#if 0 + /* The kernel locking sheme is not done in userspace. */ int locks[BTRFS_MAX_LEVEL]; - int reada; +#endif + signed char reada; /* keep some upper locks as we walk down */ - int lowest_level; + u8 lowest_level; /* * set by btrfs_split_item, tells search_slot to keep all locks * and to force calls to keep space in the nodes */ - unsigned int search_for_split:1; - unsigned int keep_locks:1; - unsigned int skip_locking:1; - unsigned int leave_spinning:1; + u8 search_for_split; + u8 skip_check_block; }; /* @@ -501,8 +589,10 @@ struct btrfs_extent_item_v0 { __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 #define BTRFS_EXTENT_FLAG_DATA (1ULL << 0) #define BTRFS_EXTENT_FLAG_TREE_BLOCK (1ULL << 1) @@ -530,7 +620,7 @@ struct btrfs_shared_data_ref { struct btrfs_extent_inline_ref { u8 type; - u64 offset; + __le64 offset; } __attribute__ ((__packed__)); struct btrfs_extent_ref_v0 { @@ -558,6 +648,13 @@ struct btrfs_inode_ref { /* name goes here */ } __attribute__ ((__packed__)); +struct btrfs_inode_extref { + __le64 parent_objectid; + __le64 index; + __le16 name_len; + __u8 name[0]; /* name goes here */ +} __attribute__ ((__packed__)); + struct btrfs_timespec { __le64 sec; __le32 nsec; @@ -567,8 +664,9 @@ typedef enum { 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 */ @@ -577,6 +675,16 @@ typedef enum { BTRFS_ENCRYPTION_LAST = 1, } btrfs_encryption_type; +enum btrfs_tree_block_status { + BTRFS_TREE_BLOCK_CLEAN, + BTRFS_TREE_BLOCK_INVALID_NRITEMS, + BTRFS_TREE_BLOCK_INVALID_PARENT_KEY, + BTRFS_TREE_BLOCK_BAD_KEY_ORDER, + BTRFS_TREE_BLOCK_INVALID_LEVEL, + BTRFS_TREE_BLOCK_INVALID_FREE_SPACE, + BTRFS_TREE_BLOCK_INVALID_OFFSETS, +}; + struct btrfs_inode_item { /* nfs style generation number */ __le64 generation; @@ -618,6 +726,21 @@ struct btrfs_dir_item { u8 type; } __attribute__ ((__packed__)); +struct btrfs_root_item_v0 { + struct btrfs_inode_item inode; + __le64 generation; + __le64 root_dirid; + __le64 bytenr; + __le64 byte_limit; + __le64 bytes_used; + __le64 last_snapshot; + __le64 flags; + __le32 refs; + struct btrfs_disk_key drop_progress; + u8 drop_level; + u8 level; +} __attribute__ ((__packed__)); + struct btrfs_root_item { struct btrfs_inode_item inode; __le64 generation; @@ -631,6 +754,36 @@ struct btrfs_root_item { struct btrfs_disk_key drop_progress; u8 drop_level; u8 level; + + /* + * The following fields appear after subvol_uuids+subvol_times + * were introduced. + */ + + /* + * This generation number is used to test if the new fields are valid + * and up to date while reading the root item. Every time the root item + * is written out, the "generation" field is copied into this field. If + * anyone ever mounted the fs with an older kernel, we will have + * mismatching generation values here and thus must invalidate the + * new fields. See btrfs_update_root and btrfs_find_last_root for + * details. + * the offset of generation_v2 is also used as the start for the memset + * when invalidating the fields. + */ + __le64 generation_v2; + u8 uuid[BTRFS_UUID_SIZE]; + u8 parent_uuid[BTRFS_UUID_SIZE]; + u8 received_uuid[BTRFS_UUID_SIZE]; + __le64 ctransid; /* updated when an inode changes */ + __le64 otransid; /* trans when created */ + __le64 stransid; /* trans when sent. non-zero for received subvol */ + __le64 rtransid; /* trans when received. non-zero for received subvol */ + struct btrfs_timespec ctime; + struct btrfs_timespec otime; + struct btrfs_timespec stime; + struct btrfs_timespec rtime; + __le64 reserved[8]; /* for future */ } __attribute__ ((__packed__)); /* @@ -642,6 +795,84 @@ struct btrfs_root_ref { __le16 name_len; } __attribute__ ((__packed__)); +struct btrfs_disk_balance_args { + /* + * profiles to operate on, single is denoted by + * BTRFS_AVAIL_ALLOC_BIT_SINGLE + */ + __le64 profiles; + + /* + * usage filter + * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N' + * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max + */ + union { + __le64 usage; + struct { + __le32 usage_min; + __le32 usage_max; + }; + }; + + /* devid filter */ + __le64 devid; + + /* devid subset filter [pstart..pend) */ + __le64 pstart; + __le64 pend; + + /* btrfs virtual address space subset filter [vstart..vend) */ + __le64 vstart; + __le64 vend; + + /* + * profile to convert to, single is denoted by + * BTRFS_AVAIL_ALLOC_BIT_SINGLE + */ + __le64 target; + + /* BTRFS_BALANCE_ARGS_* */ + __le64 flags; + + /* + * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' + * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum + * and maximum + */ + union { + __le64 limit; + struct { + __le32 limit_min; + __le32 limit_max; + }; + }; + + /* + * Process chunks that cross stripes_min..stripes_max devices, + * BTRFS_BALANCE_ARGS_STRIPES_RANGE + */ + __le32 stripes_min; + __le32 stripes_max; + + __le64 unused[6]; +} __attribute__ ((__packed__)); + +/* + * store balance parameters to disk so that balance can be properly + * resumed after crash or unmount + */ +struct btrfs_balance_item { + /* BTRFS_BALANCE_* */ + __le64 flags; + + struct btrfs_disk_balance_args data; + struct btrfs_disk_balance_args meta; + struct btrfs_disk_balance_args sys; + + __le64 unused[4]; +} __attribute__ ((__packed__)); + #define BTRFS_FILE_EXTENT_INLINE 0 #define BTRFS_FILE_EXTENT_REG 1 #define BTRFS_FILE_EXTENT_PREALLOC 2 @@ -695,10 +926,26 @@ struct btrfs_file_extent_item { } __attribute__ ((__packed__)); +struct btrfs_dev_stats_item { + /* + * grow this item struct at the end for future enhancements and keep + * the existing values unchanged + */ + __le64 values[BTRFS_DEV_STAT_VALUES_MAX]; +} __attribute__ ((__packed__)); + struct btrfs_csum_item { u8 csum; } __attribute__ ((__packed__)); +/* + * We don't want to overwrite 1M at the beginning of device, even though + * there is our 1st superblock at 64k. Some possible reasons: + * - the first 64k blank is useful for some boot loader/manager + * - the first 1M could be scratched by buggy partitioner or somesuch + */ +#define BTRFS_BLOCK_RESERVED_1M_FOR_SUPER ((u64)SZ_1M) + /* tag for the radix tree of block groups in ram */ #define BTRFS_BLOCK_GROUP_DATA (1ULL << 0) #define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1) @@ -707,17 +954,101 @@ struct btrfs_csum_item { #define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4) #define BTRFS_BLOCK_GROUP_DUP (1ULL << 5) #define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6) +#define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7) +#define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8) #define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE +enum btrfs_raid_types { + BTRFS_RAID_RAID10, + BTRFS_RAID_RAID1, + BTRFS_RAID_DUP, + BTRFS_RAID_RAID0, + BTRFS_RAID_SINGLE, + BTRFS_RAID_RAID5, + BTRFS_RAID_RAID6, + BTRFS_NR_RAID_TYPES +}; + +#define BTRFS_BLOCK_GROUP_TYPE_MASK (BTRFS_BLOCK_GROUP_DATA | \ + BTRFS_BLOCK_GROUP_SYSTEM | \ + BTRFS_BLOCK_GROUP_METADATA) + +#define BTRFS_BLOCK_GROUP_PROFILE_MASK (BTRFS_BLOCK_GROUP_RAID0 | \ + BTRFS_BLOCK_GROUP_RAID1 | \ + BTRFS_BLOCK_GROUP_RAID5 | \ + BTRFS_BLOCK_GROUP_RAID6 | \ + BTRFS_BLOCK_GROUP_DUP | \ + BTRFS_BLOCK_GROUP_RAID10) + /* used in struct btrfs_balance_args fields */ #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) +/* + * GLOBAL_RSV does not exist as a on-disk block group type and is used + * internally for exporting info about global block reserve from space infos + */ +#define BTRFS_SPACE_INFO_GLOBAL_RSV (1ULL << 49) + +#define BTRFS_QGROUP_LEVEL_SHIFT 48 + +static inline u64 btrfs_qgroup_level(u64 qgroupid) +{ + return qgroupid >> BTRFS_QGROUP_LEVEL_SHIFT; +} + +static inline u64 btrfs_qgroup_subvid(u64 qgroupid) +{ + return qgroupid & ((1ULL << BTRFS_QGROUP_LEVEL_SHIFT) - 1); +} + +#define BTRFS_QGROUP_STATUS_FLAG_ON (1ULL << 0) +#define BTRFS_QGROUP_STATUS_FLAG_RESCAN (1ULL << 1) +#define BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT (1ULL << 2) + +struct btrfs_qgroup_status_item { + __le64 version; + __le64 generation; + __le64 flags; + __le64 rescan; /* progress during scanning */ +} __attribute__ ((__packed__)); + struct btrfs_block_group_item { __le64 used; __le64 chunk_objectid; __le64 flags; } __attribute__ ((__packed__)); +struct btrfs_free_space_info { + __le32 extent_count; + __le32 flags; +} __attribute__ ((__packed__)); + +#define BTRFS_FREE_SPACE_USING_BITMAPS (1ULL << 0) + +struct btrfs_qgroup_info_item { + __le64 generation; + __le64 referenced; + __le64 referenced_compressed; + __le64 exclusive; + __le64 exclusive_compressed; +} __attribute__ ((__packed__)); + +/* flags definition for qgroup limits */ +#define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0) +#define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1) +#define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2) +#define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3) +#define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4) +#define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5) + +struct btrfs_qgroup_limit_item { + __le64 flags; + __le64 max_referenced; + __le64 max_exclusive; + __le64 rsv_referenced; + __le64 rsv_exclusive; +} __attribute__ ((__packed__)); + struct btrfs_space_info { u64 flags; u64 total_bytes; @@ -732,32 +1063,31 @@ struct btrfs_block_group_cache { struct btrfs_key key; struct btrfs_block_group_item item; struct btrfs_space_info *space_info; + struct btrfs_free_space_ctl *free_space_ctl; + u64 bytes_super; u64 pinned; u64 flags; int cached; int ro; }; -struct btrfs_extent_ops { - int (*alloc_extent)(struct btrfs_root *root, u64 num_bytes, - u64 hint_byte, struct btrfs_key *ins); - int (*free_extent)(struct btrfs_root *root, u64 bytenr, - u64 num_bytes); -}; - struct btrfs_device; struct btrfs_fs_devices; struct btrfs_fs_info { u8 fsid[BTRFS_FSID_SIZE]; + u8 *new_fsid; u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; + u8 *new_chunk_tree_uuid; struct btrfs_root *fs_root; struct btrfs_root *extent_root; struct btrfs_root *tree_root; struct btrfs_root *chunk_root; struct btrfs_root *dev_root; struct btrfs_root *csum_root; + struct btrfs_root *quota_root; + struct btrfs_root *free_space_root; - struct cache_tree fs_root_cache; + struct rb_root fs_root_tree; /* the log root tree is a directory of all the other log roots */ struct btrfs_root *log_root_tree; @@ -768,6 +1098,7 @@ struct btrfs_fs_info { struct extent_io_tree pinned_extents; struct extent_io_tree pending_del; struct extent_io_tree extent_ins; + struct extent_io_tree *excluded_extents; /* logical->physical extent mapping */ struct btrfs_mapping_tree mapping_tree; @@ -784,19 +1115,44 @@ struct btrfs_fs_info { u64 alloc_start; struct btrfs_trans_handle *running_transaction; - struct btrfs_super_block super_copy; + struct btrfs_super_block *super_copy; struct mutex fs_mutex; u64 super_bytenr; u64 total_pinned; - struct btrfs_extent_ops *extent_ops; struct list_head dirty_cowonly_roots; + struct list_head recow_ebs; struct btrfs_fs_devices *fs_devices; struct list_head space_info; - int system_allocs; - int readonly; + + unsigned int system_allocs:1; + unsigned int readonly:1; + unsigned int on_restoring:1; + unsigned int is_chunk_recover:1; + unsigned int quota_enabled:1; + unsigned int suppress_check_block_errors:1; + unsigned int ignore_fsid_mismatch:1; + unsigned int ignore_chunk_tree_error:1; + unsigned int avoid_meta_chunk_alloc: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, + u64 root_objectid, u64 owner, u64 offset, + int refs_to_drop); + struct cache_tree *fsck_extent_cache; + struct cache_tree *corrupt_blocks; + + /* Cached block sizes */ + u32 nodesize; + u32 sectorsize; + u32 stripesize; }; /* @@ -812,31 +1168,51 @@ struct btrfs_root { 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 leafsize units */ - u32 leafsize; - - /* leaf allocations are done in leafsize units */ - u32 stripesize; - int ref_cows; int track_dirty; u32 type; - u64 highest_inode; u64 last_inode_alloc; + /* + * Record orphan data extent ref + * + * TODO: Don't restore things in btrfs_root. + * Directly record it into inode_record, which needs a lot of + * infrastructure change to allow cooperation between extent + * and fs tree scan. + */ + struct list_head orphan_data_extents; + /* the dirty list is only used by non-reference counted roots */ struct list_head dirty_list; - struct cache_extent cache; + 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 @@ -844,6 +1220,7 @@ struct btrfs_root { */ #define BTRFS_INODE_ITEM_KEY 1 #define BTRFS_INODE_REF_KEY 12 +#define BTRFS_INODE_EXTREF_KEY 13 #define BTRFS_XATTR_ITEM_KEY 24 #define BTRFS_ORPHAN_ITEM_KEY 48 @@ -896,6 +1273,12 @@ struct btrfs_root { */ #define BTRFS_EXTENT_ITEM_KEY 168 +/* + * The same as the BTRFS_EXTENT_ITEM_KEY, except it's metadata we already know + * the length, so we save the level in key->offset instead of the length. + */ +#define BTRFS_METADATA_ITEM_KEY 169 + #define BTRFS_TREE_BLOCK_REF_KEY 176 #define BTRFS_EXTENT_DATA_REF_KEY 178 @@ -914,6 +1297,27 @@ struct btrfs_root { */ #define BTRFS_BLOCK_GROUP_ITEM_KEY 192 +/* + * Every block group is represented in the free space tree by a free space info + * item, which stores some accounting information. It is keyed on + * (block_group_start, FREE_SPACE_INFO, block_group_length). + */ +#define BTRFS_FREE_SPACE_INFO_KEY 198 + +/* + * A free space extent tracks an extent of space that is free in a block group. + * It is keyed on (start, FREE_SPACE_EXTENT, length). + */ +#define BTRFS_FREE_SPACE_EXTENT_KEY 199 + +/* + * When a block group becomes very fragmented, we convert it to use bitmaps + * instead of extents. A free space bitmap is keyed on + * (start, FREE_SPACE_BITMAP, length); the corresponding item is a bitmap with + * (length / sectorsize) bits. + */ +#define BTRFS_FREE_SPACE_BITMAP_KEY 200 + #define BTRFS_DEV_EXTENT_KEY 204 #define BTRFS_DEV_ITEM_KEY 216 #define BTRFS_CHUNK_ITEM_KEY 228 @@ -921,6 +1325,71 @@ struct btrfs_root { #define BTRFS_BALANCE_ITEM_KEY 248 /* + * quota groups + */ +#define BTRFS_QGROUP_STATUS_KEY 240 +#define BTRFS_QGROUP_INFO_KEY 242 +#define BTRFS_QGROUP_LIMIT_KEY 244 +#define BTRFS_QGROUP_RELATION_KEY 246 + +/* + * Obsolete name, see BTRFS_TEMPORARY_ITEM_KEY. + */ +#define BTRFS_BALANCE_ITEM_KEY 248 + +/* + * The key type for tree items that are stored persistently, but do not need to + * exist for extended period of time. The items can exist in any tree. + * + * [subtype, BTRFS_TEMPORARY_ITEM_KEY, data] + * + * Existing items: + * + * - balance status item + * (BTRFS_BALANCE_OBJECTID, BTRFS_TEMPORARY_ITEM_KEY, 0) + */ +#define BTRFS_TEMPORARY_ITEM_KEY 248 + +/* + * Obsolete name, see BTRFS_PERSISTENT_ITEM_KEY + */ +#define BTRFS_DEV_STATS_KEY 249 + +/* + * The key type for tree items that are stored persistently and usually exist + * for a long period, eg. filesystem lifetime. The item kinds can be status + * information, stats or preference values. The item can exist in any tree. + * + * [subtype, BTRFS_PERSISTENT_ITEM_KEY, data] + * + * Existing items: + * + * - device statistics, store IO stats in the device tree, one key for all + * stats + * (BTRFS_DEV_STATS_OBJECTID, BTRFS_DEV_STATS_KEY, 0) + */ +#define BTRFS_PERSISTENT_ITEM_KEY 249 + +/* + * Persistently stores the device replace state in the device tree. + * The key is built like this: (0, BTRFS_DEV_REPLACE_KEY, 0). + */ +#define BTRFS_DEV_REPLACE_KEY 250 + +/* + * Stores items that allow to quickly map UUIDs to something else. + * These items are part of the filesystem UUID tree. + * The key is built like this: + * (UUID_upper_64_bits, BTRFS_UUID_KEY*, UUID_lower_64_bits). + */ +#if BTRFS_UUID_SIZE != 16 +#error "UUID items require BTRFS_UUID_SIZE == 16!" +#endif +#define BTRFS_UUID_KEY_SUBVOL 251 /* for UUIDs assigned to subvols */ +#define BTRFS_UUID_KEY_RECEIVED_SUBVOL 252 /* for UUIDs assigned to + * received subvols */ + +/* * string items are for debugging. They just store a short string of * data in the FS */ @@ -931,6 +1400,15 @@ struct btrfs_root { #define BTRFS_INODE_NODATASUM (1 << 0) #define BTRFS_INODE_NODATACOW (1 << 1) #define BTRFS_INODE_READONLY (1 << 2) +#define BTRFS_INODE_NOCOMPRESS (1 << 3) +#define BTRFS_INODE_PREALLOC (1 << 4) +#define BTRFS_INODE_SYNC (1 << 5) +#define BTRFS_INODE_IMMUTABLE (1 << 6) +#define BTRFS_INODE_APPEND (1 << 7) +#define BTRFS_INODE_NODUMP (1 << 8) +#define BTRFS_INODE_NOATIME (1 << 9) +#define BTRFS_INODE_DIRSYNC (1 << 10) +#define BTRFS_INODE_COMPRESS (1 << 11) #define read_eb_member(eb, ptr, type, member, result) ( \ read_extent_buffer(eb, (char *)(result), \ @@ -945,9 +1423,9 @@ struct btrfs_root { sizeof(((type *)0)->member))) #define BTRFS_SETGET_HEADER_FUNCS(name, type, member, bits) \ -static inline u##bits btrfs_##name(struct extent_buffer *eb) \ +static inline u##bits btrfs_##name(const struct extent_buffer *eb) \ { \ - struct btrfs_header *h = (struct btrfs_header *)eb->data; \ + const struct btrfs_header *h = (struct btrfs_header *)eb->data; \ return le##bits##_to_cpu(h->member); \ } \ static inline void btrfs_set_##name(struct extent_buffer *eb, \ @@ -958,23 +1436,23 @@ static inline void btrfs_set_##name(struct extent_buffer *eb, \ } #define BTRFS_SETGET_FUNCS(name, type, member, bits) \ -static inline u##bits btrfs_##name(struct extent_buffer *eb, \ - type *s) \ +static inline u##bits btrfs_##name(const struct extent_buffer *eb, \ + const type *s) \ { \ unsigned long offset = (unsigned long)s; \ - type *p = (type *) (eb->data + offset); \ - return le##bits##_to_cpu(p->member); \ + const type *p = (type *) (eb->data + offset); \ + return get_unaligned_le##bits(&p->member); \ } \ static inline void btrfs_set_##name(struct extent_buffer *eb, \ type *s, u##bits val) \ { \ unsigned long offset = (unsigned long)s; \ type *p = (type *) (eb->data + offset); \ - p->member = cpu_to_le##bits(val); \ + put_unaligned_le##bits(val, &p->member); \ } #define BTRFS_SETGET_STACK_FUNCS(name, type, member, bits) \ -static inline u##bits btrfs_##name(type *s) \ +static inline u##bits btrfs_##name(const type *s) \ { \ return le##bits##_to_cpu(s->member); \ } \ @@ -1118,11 +1596,23 @@ BTRFS_SETGET_FUNCS(disk_block_group_flags, BTRFS_SETGET_STACK_FUNCS(block_group_flags, struct btrfs_block_group_item, flags, 64); +/* struct btrfs_free_space_info */ +BTRFS_SETGET_FUNCS(free_space_extent_count, struct btrfs_free_space_info, + extent_count, 32); +BTRFS_SETGET_FUNCS(free_space_flags, struct btrfs_free_space_info, flags, 32); + /* struct btrfs_inode_ref */ BTRFS_SETGET_FUNCS(inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); BTRFS_SETGET_STACK_FUNCS(stack_inode_ref_name_len, struct btrfs_inode_ref, name_len, 16); BTRFS_SETGET_FUNCS(inode_ref_index, struct btrfs_inode_ref, index, 64); +/* struct btrfs_inode_extref */ +BTRFS_SETGET_FUNCS(inode_extref_parent, struct btrfs_inode_extref, + parent_objectid, 64); +BTRFS_SETGET_FUNCS(inode_extref_name_len, struct btrfs_inode_extref, + name_len, 16); +BTRFS_SETGET_FUNCS(inode_extref_index, struct btrfs_inode_extref, index, 64); + /* struct btrfs_inode_item */ BTRFS_SETGET_FUNCS(inode_generation, struct btrfs_inode_item, generation, 64); BTRFS_SETGET_FUNCS(inode_sequence, struct btrfs_inode_item, sequence, 64); @@ -1140,7 +1630,9 @@ BTRFS_SETGET_FUNCS(inode_flags, struct btrfs_inode_item, flags, 64); BTRFS_SETGET_STACK_FUNCS(stack_inode_generation, struct btrfs_inode_item, generation, 64); BTRFS_SETGET_STACK_FUNCS(stack_inode_sequence, - struct btrfs_inode_item, generation, 64); + struct btrfs_inode_item, sequence, 64); +BTRFS_SETGET_STACK_FUNCS(stack_inode_transid, + struct btrfs_inode_item, transid, 64); BTRFS_SETGET_STACK_FUNCS(stack_inode_size, struct btrfs_inode_item, size, 64); BTRFS_SETGET_STACK_FUNCS(stack_inode_nbytes, @@ -1208,6 +1700,9 @@ 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); @@ -1217,9 +1712,11 @@ static inline u8 *btrfs_dev_extent_chunk_tree_uuid(struct btrfs_dev_extent *dev) /* 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); @@ -1255,6 +1752,10 @@ 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) { @@ -1349,8 +1850,7 @@ static inline unsigned long btrfs_item_nr_offset(int nr) sizeof(struct btrfs_item) * nr; } -static inline struct btrfs_item *btrfs_item_nr(struct extent_buffer *eb, - int nr) +static inline struct btrfs_item *btrfs_item_nr(int nr) { return (struct btrfs_item *)btrfs_item_nr_offset(nr); } @@ -1363,30 +1863,30 @@ static inline u32 btrfs_item_end(struct extent_buffer *eb, static inline u32 btrfs_item_end_nr(struct extent_buffer *eb, int nr) { - return btrfs_item_end(eb, btrfs_item_nr(eb, nr)); + 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(eb, 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(eb, 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(eb, 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(eb, nr); + struct btrfs_item *item = btrfs_item_nr(nr); write_eb_member(eb, item, struct btrfs_item, key, disk_key); } @@ -1409,6 +1909,11 @@ 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) @@ -1423,6 +1928,28 @@ static inline void btrfs_set_dir_item_key(struct extent_buffer *eb, 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); @@ -1470,17 +1997,6 @@ static inline void btrfs_dir_item_key_to_cpu(struct extent_buffer *eb, btrfs_disk_key_to_cpu(key, &disk_key); } - -static inline u8 btrfs_key_type(struct btrfs_key *key) -{ - return key->type; -} - -static inline void btrfs_set_key_type(struct btrfs_key *key, u8 val) -{ - key->type = val; -} - /* struct btrfs_header */ BTRFS_SETGET_HEADER_FUNCS(header_bytenr, struct btrfs_header, bytenr, 64); BTRFS_SETGET_HEADER_FUNCS(header_generation, struct btrfs_header, @@ -1489,6 +2005,12 @@ 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) { @@ -1524,22 +2046,14 @@ static inline void btrfs_set_header_backref_rev(struct extent_buffer *eb, btrfs_set_header_flags(eb, flags); } -static inline u8 *btrfs_header_fsid(struct extent_buffer *eb) +static inline unsigned long btrfs_header_fsid(void) { - unsigned long ptr = offsetof(struct btrfs_header, fsid); - return (u8 *)ptr; + return offsetof(struct btrfs_header, fsid); } -static inline u8 *btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) +static inline unsigned long btrfs_header_chunk_tree_uuid(struct extent_buffer *eb) { - unsigned long ptr = offsetof(struct btrfs_header, chunk_tree_uuid); - return (u8 *)ptr; -} - -static inline u8 *btrfs_super_fsid(struct extent_buffer *eb) -{ - unsigned long ptr = offsetof(struct btrfs_super_block, fsid); - return (u8 *)ptr; + return offsetof(struct btrfs_header, chunk_tree_uuid); } static inline u8 *btrfs_header_csum(struct extent_buffer *eb) @@ -1548,21 +2062,6 @@ static inline u8 *btrfs_header_csum(struct extent_buffer *eb) return (u8 *)ptr; } -static inline struct btrfs_node *btrfs_buffer_node(struct extent_buffer *eb) -{ - return NULL; -} - -static inline struct btrfs_leaf *btrfs_buffer_leaf(struct extent_buffer *eb) -{ - return NULL; -} - -static inline struct btrfs_header *btrfs_buffer_header(struct extent_buffer *eb) -{ - return NULL; -} - static inline int btrfs_is_leaf(struct extent_buffer *eb) { return (btrfs_header_level(eb) == 0); @@ -1586,7 +2085,48 @@ 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, @@ -1668,8 +2208,6 @@ 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_leafsize, struct btrfs_super_block, - leafsize, 32); BTRFS_SETGET_STACK_FUNCS(super_stripesize, struct btrfs_super_block, stripesize, 32); BTRFS_SETGET_STACK_FUNCS(super_root_dir, struct btrfs_super_block, @@ -1679,13 +2217,16 @@ BTRFS_SETGET_STACK_FUNCS(super_num_devices, struct btrfs_super_block, 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_flags, 64); + 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 int btrfs_super_csum_size(struct btrfs_super_block *s) { @@ -1747,13 +2288,112 @@ BTRFS_SETGET_FUNCS(file_extent_encryption, struct btrfs_file_extent_item, BTRFS_SETGET_FUNCS(file_extent_other_encoding, struct btrfs_file_extent_item, other_encoding, 16); -/* this returns the number of file bytes represented by the inline item. - * If an item is compressed, this is the uncompressed size +/* 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, + referenced, 64); +BTRFS_SETGET_FUNCS(qgroup_info_referenced_compressed, + struct btrfs_qgroup_info_item, referenced_compressed, 64); +BTRFS_SETGET_FUNCS(qgroup_info_exclusive, struct btrfs_qgroup_info_item, + exclusive, 64); +BTRFS_SETGET_FUNCS(qgroup_info_exclusive_compressed, + struct btrfs_qgroup_info_item, exclusive_compressed, 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, referenced, 64); +BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_referenced_compressed, + struct btrfs_qgroup_info_item, referenced_compressed, 64); +BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_exclusive, + struct btrfs_qgroup_info_item, exclusive, 64); +BTRFS_SETGET_STACK_FUNCS(stack_qgroup_info_exclusive_compressed, + struct btrfs_qgroup_info_item, exclusive_compressed, 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_referenced, 64); +BTRFS_SETGET_FUNCS(qgroup_limit_max_exclusive, struct btrfs_qgroup_limit_item, + max_exclusive, 64); +BTRFS_SETGET_FUNCS(qgroup_limit_rsv_referenced, struct btrfs_qgroup_limit_item, + rsv_referenced, 64); +BTRFS_SETGET_FUNCS(qgroup_limit_rsv_exclusive, struct btrfs_qgroup_limit_item, + rsv_exclusive, 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_referenced, 64); +BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_max_exclusive, + struct btrfs_qgroup_limit_item, max_exclusive, 64); +BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_referenced, + struct btrfs_qgroup_limit_item, rsv_referenced, 64); +BTRFS_SETGET_STACK_FUNCS(stack_qgroup_limit_rsv_exclusive, + struct btrfs_qgroup_limit_item, rsv_exclusive, 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; +} + +/* + * btrfs_dev_stats_item helper, returns pointer to the raw array, do the + * endiannes conversion, @dsi is offset to eb data */ -static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, - struct btrfs_file_extent_item *e) +static inline __le64* btrfs_dev_stats_values(struct extent_buffer *eb, + struct btrfs_dev_stats_item *dsi) { - return btrfs_file_extent_ram_bytes(eb, e); + unsigned long offset = (unsigned long)dsi; + struct btrfs_dev_stats_item *p; + p = (struct btrfs_dev_stats_item *)(eb->data + offset); + return p->values; } /* @@ -1769,10 +2409,72 @@ static inline u32 btrfs_file_extent_inline_item_len(struct extent_buffer *eb, return btrfs_item_size(eb, e) - offset; } -static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { - if (level == 0) - return root->leafsize; - return root->nodesize; +/* struct btrfs_ioctl_search_header */ +static inline u64 btrfs_search_header_transid(struct btrfs_ioctl_search_header *sh) +{ + return get_unaligned_64(&sh->transid); +} + +static inline u64 btrfs_search_header_objectid(struct btrfs_ioctl_search_header *sh) +{ + return get_unaligned_64(&sh->objectid); +} + +static inline u64 btrfs_search_header_offset(struct btrfs_ioctl_search_header *sh) +{ + return get_unaligned_64(&sh->offset); +} + +static inline u32 btrfs_search_header_type(struct btrfs_ioctl_search_header *sh) +{ + return get_unaligned_32(&sh->type); +} + +static inline u32 btrfs_search_header_len(struct btrfs_ioctl_search_header *sh) +{ + return get_unaligned_32(&sh->len); +} + +/* this returns the number of file bytes represented by the inline item. + * If an item is compressed, this is the uncompressed size + */ +static inline u32 btrfs_file_extent_inline_len(struct extent_buffer *eb, + int slot, + struct btrfs_file_extent_item *fi) +{ + /* + * return the space used on disk if this item isn't + * compressed or encoded + */ + if (btrfs_file_extent_compression(eb, fi) == 0 && + btrfs_file_extent_encryption(eb, fi) == 0 && + btrfs_file_extent_other_encoding(eb, fi) == 0) { + return btrfs_file_extent_inline_item_len(eb, + btrfs_item_nr(slot)); + } + + /* otherwise use the ram bytes field */ + return btrfs_file_extent_ram_bytes(eb, fi); +} + +#define btrfs_fs_incompat(fs_info, opt) \ + __btrfs_fs_incompat((fs_info), BTRFS_FEATURE_INCOMPAT_##opt) + +static inline int __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. */ @@ -1785,41 +2487,43 @@ static inline u32 btrfs_level_size(struct btrfs_root *root, int level) { btrfs_item_offset_nr(leaf, slot))) /* extent-tree.c */ +int btrfs_reserve_extent(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + u64 num_bytes, u64 empty_size, + u64 hint_byte, u64 search_end, + struct btrfs_key *ins, bool is_data); int btrfs_fix_block_accounting(struct btrfs_trans_handle *trans, struct btrfs_root *root); -int btrfs_check_block_accounting(struct btrfs_root *root); void btrfs_pin_extent(struct btrfs_fs_info *fs_info, u64 bytenr, u64 num_bytes); +void btrfs_unpin_extent(struct btrfs_fs_info *fs_info, + u64 bytenr, u64 num_bytes); int btrfs_extent_post_op(struct btrfs_trans_handle *trans, struct btrfs_root *root); -int btrfs_copy_pinned(struct btrfs_root *root, struct extent_io_tree *copy); struct btrfs_block_group_cache *btrfs_lookup_block_group(struct btrfs_fs_info *info, u64 bytenr); -struct btrfs_block_group_cache *btrfs_find_block_group(struct btrfs_root *root, - struct btrfs_block_group_cache - *hint, u64 search_start, - int data, int owner); +struct btrfs_block_group_cache *btrfs_lookup_first_block_group(struct + btrfs_fs_info *info, + u64 bytenr); struct extent_buffer *btrfs_alloc_free_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, 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 num_bytes, u64 *refs, u64 *flags); + u64 offset, int metadata, u64 *refs, u64 *flags); int btrfs_set_block_flags(struct btrfs_trans_handle *trans, struct btrfs_root *root, - u64 bytenr, u64 num_bytes, u64 flags); + u64 bytenr, int level, u64 flags); int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct extent_buffer *buf, int record_parent); int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct extent_buffer *buf, int record_parent); +int btrfs_free_tree_block(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + struct extent_buffer *buf, + u64 parent, int last_ref); int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 bytenr, u64 num_bytes, u64 parent, @@ -1841,26 +2545,52 @@ int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, struct btrfs_root *root); int btrfs_free_block_groups(struct btrfs_fs_info *info); 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_offset, u64 size); int btrfs_make_block_group(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 bytes_used, - u64 type, u64 chunk_objectid, u64 chunk_offset, - u64 size); + struct btrfs_fs_info *fs_info, u64 bytes_used, + u64 type, u64 chunk_offset, u64 size); int btrfs_make_block_groups(struct btrfs_trans_handle *trans, - struct btrfs_root *root); -int btrfs_update_block_group(struct btrfs_trans_handle *trans, - struct btrfs_root *root, u64 bytenr, u64 num, + struct btrfs_fs_info *fs_info); +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_inode_item *inode, + u64 file_pos, u64 disk_bytenr, + u64 num_bytes); +int btrfs_free_block_group(struct btrfs_trans_handle *trans, + struct btrfs_fs_info *fs_info, u64 bytenr, u64 len); +void free_excluded_extents(struct btrfs_root *root, + struct btrfs_block_group_cache *cache); +int exclude_super_stripes(struct btrfs_root *root, + struct btrfs_block_group_cache *cache); +u64 add_new_free_space(struct btrfs_block_group_cache *block_group, + struct btrfs_fs_info *info, u64 start, u64 end); +u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset); + /* ctree.c */ -int btrfs_fsck_reinit_root(struct btrfs_trans_handle *trans, - struct btrfs_root *root); +int btrfs_comp_cpu_keys(struct btrfs_key *k1, struct btrfs_key *k2); +int btrfs_del_ptr(struct btrfs_root *root, struct btrfs_path *path, + int level, int slot); +enum btrfs_tree_block_status +btrfs_check_node(struct btrfs_root *root, struct btrfs_disk_key *parent_key, + struct extent_buffer *buf); +enum btrfs_tree_block_status +btrfs_check_leaf(struct btrfs_root *root, struct btrfs_disk_key *parent_key, + 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, int type); -int btrfs_comp_keys(struct btrfs_disk_key *disk, struct btrfs_key *k2); +int btrfs_previous_extent_item(struct btrfs_root *root, + struct btrfs_path *path, u64 min_objectid); +int btrfs_next_extent_item(struct btrfs_root *root, + struct btrfs_path *path, u64 max_objectid); int btrfs_cow_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct extent_buffer *buf, struct extent_buffer *parent, int parent_slot, @@ -1875,11 +2605,9 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct extent_buffer *buf, struct extent_buffer **cow_ret, u64 new_root_objectid); -int btrfs_extend_item(struct btrfs_trans_handle *trans, struct btrfs_root - *root, struct btrfs_path *path, u32 data_size); -int btrfs_truncate_item(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_path *path, +int btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path, + u32 data_size); +int btrfs_truncate_item(struct btrfs_root *root, struct btrfs_path *path, u32 new_size, int from_end); int btrfs_split_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, @@ -1889,11 +2617,11 @@ int btrfs_split_item(struct btrfs_trans_handle *trans, int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_key *key, struct btrfs_path *p, int ins_len, int cow); -int btrfs_realloc_node(struct btrfs_trans_handle *trans, - struct btrfs_root *root, struct extent_buffer *parent, - int start_slot, int cache_only, u64 *last_ret, - struct btrfs_key *progress); -void btrfs_release_path(struct btrfs_root *root, struct btrfs_path *p); +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); +void btrfs_release_path(struct btrfs_path *p); +void add_root_to_dirty_list(struct btrfs_root *root); struct btrfs_path *btrfs_alloc_path(void); void btrfs_free_path(struct btrfs_path *p); void btrfs_init_path(struct btrfs_path *p); @@ -1924,13 +2652,24 @@ static inline int btrfs_insert_empty_item(struct btrfs_trans_handle *trans, } int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *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 btrfs_root *root, struct extent_buffer *leaf); -int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root - *root); -int btrfs_set_item_key_safe(struct btrfs_trans_handle *trans, - struct btrfs_root *root, struct btrfs_path *path, +void btrfs_fixup_low_keys(struct btrfs_root *root, struct btrfs_path *path, + struct btrfs_disk_key *key, int level); +int btrfs_set_item_key_safe(struct btrfs_root *root, struct btrfs_path *path, struct btrfs_key *new_key); +void btrfs_set_item_key_unsafe(struct btrfs_root *root, + struct btrfs_path *path, + struct btrfs_key *new_key); /* root-item.c */ int btrfs_add_root_ref(struct btrfs_trans_handle *trans, @@ -1938,18 +2677,16 @@ int btrfs_add_root_ref(struct btrfs_trans_handle *trans, u64 root_id, u8 type, u64 ref_id, u64 dirid, u64 sequence, const char *name, int name_len); -int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, - struct btrfs_key *key); int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_key *key, struct btrfs_root_item *item); +int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, + struct btrfs_key *key); int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_key *key, struct btrfs_root_item *item); int btrfs_find_last_root(struct btrfs_root *root, u64 objectid, struct btrfs_root_item *item, struct btrfs_key *key); -int btrfs_find_dead_roots(struct btrfs_root *root, u64 objectid, - struct btrfs_root *latest_root); /* dir-item.c */ int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, const char *name, int name_len, u64 dir, @@ -1959,15 +2696,11 @@ struct btrfs_dir_item *btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_path *path, u64 dir, const char *name, int name_len, int mod); -struct btrfs_dir_item * -btrfs_lookup_dir_index_item(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_path *path, u64 dir, - u64 objectid, const char *name, int name_len, - int mod); -struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root, - struct btrfs_path *path, - const char *name, int name_len); +struct btrfs_dir_item *btrfs_lookup_dir_index(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + struct btrfs_path *path, u64 dir, + const char *name, int name_len, + u64 index, int mod); int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, @@ -1976,35 +2709,42 @@ int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans, struct btrfs_root *root, const char *name, u16 name_len, const void *data, u16 data_len, u64 dir); -struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_path *path, u64 dir, - const char *name, u16 name_len, - int mod); /* inode-map.c */ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, struct btrfs_root *fs_root, u64 dirid, u64 *objectid); -int btrfs_find_highest_inode(struct btrfs_root *fs_root, u64 *objectid); /* inode-item.c */ int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, const char *name, int name_len, u64 inode_objectid, u64 ref_objectid, u64 index); -int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - const char *name, int name_len, - u64 inode_objectid, u64 ref_objectid); -int btrfs_insert_empty_inode(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_path *path, u64 objectid); int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 objectid, struct btrfs_inode_item *inode_item); int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, struct btrfs_key *location, int mod); +struct btrfs_inode_extref *btrfs_lookup_inode_extref(struct btrfs_trans_handle + *trans, struct btrfs_path *path, struct btrfs_root *root, + u64 ino, u64 parent_ino, u64 index, const char *name, + int namelen, int ins_len); +int btrfs_del_inode_extref(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + const char *name, int name_len, + u64 inode_objectid, u64 ref_objectid, + u64 *index); +int btrfs_insert_inode_extref(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + const char *name, int name_len, + u64 inode_objectid, u64 ref_objectid, u64 index); +struct btrfs_inode_ref *btrfs_lookup_inode_ref(struct btrfs_trans_handle *trans, + struct btrfs_root *root, struct btrfs_path *path, + const char *name, int namelen, u64 ino, u64 parent_ino, + int ins_len); +int btrfs_del_inode_ref(struct btrfs_trans_handle *trans, + struct btrfs_root *root, const char *name, int name_len, + u64 ino, u64 parent_ino, u64 *index); /* file-item.c */ int btrfs_del_csums(struct btrfs_trans_handle *trans, @@ -2016,19 +2756,57 @@ int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, 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); -int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_path *path, u64 objectid, - u64 bytenr, int mod); + 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_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_path *path, - u64 bytenr, int cow); int btrfs_csum_truncate(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, u64 isize); + +/* uuid-tree.c */ +int btrfs_lookup_uuid_subvol_item(int fd, const u8 *uuid, u64 *subvol_id); +int btrfs_lookup_uuid_received_subvol_item(int fd, const u8 *uuid, + u64 *subvol_id); + +static inline int is_fstree(u64 rootid) +{ + if (rootid == BTRFS_FS_TREE_OBJECTID || + (signed long long)rootid >= (signed long long)BTRFS_FIRST_FREE_OBJECTID) + return 1; + return 0; +} + +/* inode.c */ +int check_dir_conflict(struct btrfs_root *root, char *name, int namelen, + u64 dir, u64 index); +int btrfs_new_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root, + u64 ino, u32 mode); +int btrfs_change_inode_flags(struct btrfs_trans_handle *trans, + 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, 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); +int btrfs_add_orphan_item(struct btrfs_trans_handle *trans, + struct btrfs_root *root, struct btrfs_path *path, + 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, + struct btrfs_root *root, + struct btrfs_path *path, + u64 ino, u64 offset, u64 len, int ins_len); +int btrfs_punch_hole(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + u64 ino, u64 offset, u64 len); +int btrfs_read_file(struct btrfs_root *root, u64 ino, u64 start, int len, + char *dest); + #endif