diff options
Diffstat (limited to 'utils.h')
| -rw-r--r-- | utils.h | 66 |
1 files changed, 64 insertions, 2 deletions
@@ -46,6 +46,8 @@ | BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA \ | BTRFS_FEATURE_INCOMPAT_NO_HOLES) +#define BTRFS_CONVERT_META_GROUP_SIZE (32 * 1024 * 1024) + #define BTRFS_FEATURE_LIST_ALL (1ULL << 63) #define BTRFS_SCAN_MOUNTED (1ULL << 0) @@ -123,7 +125,30 @@ struct btrfs_mkfs_config { u64 super_bytenr; }; -int make_btrfs(int fd, struct btrfs_mkfs_config *cfg); +struct btrfs_convert_context { + u32 blocksize; + u32 first_data_block; + u32 block_count; + u32 inodes_count; + u32 free_inodes_count; + u64 total_bytes; + char *volume_name; + const struct btrfs_convert_operations *convert_ops; + + /* The accurate used space of old filesystem */ + struct cache_tree used; + + /* Batched ranges which must be covered by data chunks */ + struct cache_tree data_chunks; + + /* Free space which is not covered by data_chunks */ + struct cache_tree free; + + void *fs_data; +}; + +int make_btrfs(int fd, struct btrfs_mkfs_config *cfg, + struct btrfs_convert_context *cctx); int btrfs_make_root_dir(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 objectid); int btrfs_prepare_device(int fd, const char *file, int zero_end, @@ -209,8 +234,9 @@ int get_subvol_info(const char *fullpath, struct root_info *get_ri); */ static inline u64 btrfs_min_global_blk_rsv_size(u32 nodesize) { - return nodesize << 10; + return (u64)nodesize << 10; } + static inline u64 btrfs_min_dev_size(u32 nodesize) { return 2 * (BTRFS_MKFS_SYSTEM_GROUP_SIZE + @@ -277,6 +303,8 @@ const char *get_argv0_buf(void); unsigned int get_unit_mode_from_arg(int *argc, char *argv[], int df_mode); void clean_args_no_options(int argc, char *argv[], const char * const *usage); +void clean_args_no_options_relaxed(int argc, char *argv[], + const char * const *usagestr); int string_is_numerical(const char *str); __attribute__ ((format (printf, 1, 2))) @@ -337,4 +365,38 @@ static inline int error_on(int condition, const char *fmt, ...) return 1; } +/* Pseudo random number generator wrappers */ +u32 rand_u32(void); + +static inline int rand_int(void) +{ + return (int)(rand_u32()); +} + +static inline u64 rand_u64(void) +{ + u64 ret = 0; + + ret += rand_u32(); + ret <<= 32; + ret += rand_u32(); + return ret; +} + +static inline u16 rand_u16(void) +{ + return (u16)(rand_u32()); +} + +static inline u8 rand_u8(void) +{ + return (u8)(rand_u32()); +} + +/* Return random number in range [0, limit) */ +unsigned int rand_range(unsigned int upper); + +/* Also allow setting the seed manually */ +void init_rand_seed(u64 seed); + #endif |