| /* |
| * fs/befs/befs_fs_types.h |
| * |
| * Copyright (C) 2001 Will Dyson (will@cs.earlham.edu) |
| * |
| * |
| * |
| * from linux/include/linux/befs_fs.h |
| * |
| * Copyright (C) 1999 Makoto Kato (m_kato@ga2.so-net.ne.jp) |
| * |
| */ |
| |
| #ifndef _LINUX_BEFS_FS_TYPES |
| #define _LINUX_BEFS_FS_TYPES |
| |
| #ifdef __KERNEL__ |
| #include <linux/types.h> |
| #endif /*__KERNEL__*/ |
| |
| #define PACKED __attribute__ ((__packed__)) |
| |
| /* |
| * Max name lengths of BFS |
| */ |
| |
| #define BEFS_NAME_LEN 255 |
| |
| #define BEFS_SYMLINK_LEN 144 |
| #define BEFS_NUM_DIRECT_BLOCKS 12 |
| #define B_OS_NAME_LENGTH 32 |
| |
| /* The datastream blocks mapped by the double-indirect |
| * block are always 4 fs blocks long. |
| * This eliminates the need for linear searches among |
| * the potentially huge number of indirect blocks |
| * |
| * Err. Should that be 4 fs blocks or 4k??? |
| * It matters on large blocksize volumes |
| */ |
| #define BEFS_DBLINDIR_BRUN_LEN 4 |
| |
| /* |
| * Flags of superblock |
| */ |
| |
| enum super_flags { |
| BEFS_BYTESEX_BE, |
| BEFS_BYTESEX_LE, |
| BEFS_CLEAN = 0x434c454e, |
| BEFS_DIRTY = 0x44495254, |
| BEFS_SUPER_MAGIC1 = 0x42465331, /* BFS1 */ |
| BEFS_SUPER_MAGIC2 = 0xdd121031, |
| BEFS_SUPER_MAGIC3 = 0x15b6830e, |
| }; |
| |
| #define BEFS_BYTEORDER_NATIVE 0x42494745 |
| #define BEFS_BYTEORDER_NATIVE_LE (__force fs32)cpu_to_le32(BEFS_BYTEORDER_NATIVE) |
| #define BEFS_BYTEORDER_NATIVE_BE (__force fs32)cpu_to_be32(BEFS_BYTEORDER_NATIVE) |
| |
| #define BEFS_SUPER_MAGIC BEFS_SUPER_MAGIC1 |
| #define BEFS_SUPER_MAGIC1_LE (__force fs32)cpu_to_le32(BEFS_SUPER_MAGIC1) |
| #define BEFS_SUPER_MAGIC1_BE (__force fs32)cpu_to_be32(BEFS_SUPER_MAGIC1) |
| |
| /* |
| * Flags of inode |
| */ |
| |
| #define BEFS_INODE_MAGIC1 0x3bbe0ad9 |
| |
| enum inode_flags { |
| BEFS_INODE_IN_USE = 0x00000001, |
| BEFS_ATTR_INODE = 0x00000004, |
| BEFS_INODE_LOGGED = 0x00000008, |
| BEFS_INODE_DELETED = 0x00000010, |
| BEFS_LONG_SYMLINK = 0x00000040, |
| BEFS_PERMANENT_FLAG = 0x0000ffff, |
| BEFS_INODE_NO_CREATE = 0x00010000, |
| BEFS_INODE_WAS_WRITTEN = 0x00020000, |
| BEFS_NO_TRANSACTION = 0x00040000, |
| }; |
| /* |
| * On-Disk datastructures of BeFS |
| */ |
| |
| typedef u64 __bitwise fs64; |
| typedef u32 __bitwise fs32; |
| typedef u16 __bitwise fs16; |
| |
| typedef u64 befs_off_t; |
| typedef fs64 befs_time_t; |
| |
| /* Block runs */ |
| typedef struct { |
| fs32 allocation_group; |
| fs16 start; |
| fs16 len; |
| } PACKED befs_disk_block_run; |
| |
| typedef struct { |
| u32 allocation_group; |
| u16 start; |
| u16 len; |
| } PACKED befs_block_run; |
| |
| typedef befs_disk_block_run befs_disk_inode_addr; |
| typedef befs_block_run befs_inode_addr; |
| |
| /* |
| * The Superblock Structure |
| */ |
| typedef struct { |
| char name[B_OS_NAME_LENGTH]; |
| fs32 magic1; |
| fs32 fs_byte_order; |
| |
| fs32 block_size; |
| fs32 block_shift; |
| |
| fs64 num_blocks; |
| fs64 used_blocks; |
| |
| fs32 inode_size; |
| |
| fs32 magic2; |
| fs32 blocks_per_ag; |
| fs32 ag_shift; |
| fs32 num_ags; |
| |
| fs32 flags; |
| |
| befs_disk_block_run log_blocks; |
| fs64 log_start; |
| fs64 log_end; |
| |
| fs32 magic3; |
| befs_disk_inode_addr root_dir; |
| befs_disk_inode_addr indices; |
| |
| } PACKED befs_super_block; |
| |
| /* |
| * Note: the indirect and dbl_indir block_runs may |
| * be longer than one block! |
| */ |
| typedef struct { |
| befs_disk_block_run direct[BEFS_NUM_DIRECT_BLOCKS]; |
| fs64 max_direct_range; |
| befs_disk_block_run indirect; |
| fs64 max_indirect_range; |
| befs_disk_block_run double_indirect; |
| fs64 max_double_indirect_range; |
| fs64 size; |
| } PACKED befs_disk_data_stream; |
| |
| typedef struct { |
| befs_block_run direct[BEFS_NUM_DIRECT_BLOCKS]; |
| befs_off_t max_direct_range; |
| befs_block_run indirect; |
| befs_off_t max_indirect_range; |
| befs_block_run double_indirect; |
| befs_off_t max_double_indirect_range; |
| befs_off_t size; |
| } PACKED befs_data_stream; |
| |
| /* Attribute */ |
| typedef struct { |
| fs32 type; |
| fs16 name_size; |
| fs16 data_size; |
| char name[1]; |
| } PACKED befs_small_data; |
| |
| /* Inode structure */ |
| typedef struct { |
| fs32 magic1; |
| befs_disk_inode_addr inode_num; |
| fs32 uid; |
| fs32 gid; |
| fs32 mode; |
| fs32 flags; |
| befs_time_t create_time; |
| befs_time_t last_modified_time; |
| befs_disk_inode_addr parent; |
| befs_disk_inode_addr attributes; |
| fs32 type; |
| |
| fs32 inode_size; |
| fs32 etc; /* not use */ |
| |
| union { |
| befs_disk_data_stream datastream; |
| char symlink[BEFS_SYMLINK_LEN]; |
| } data; |
| |
| fs32 pad[4]; /* not use */ |
| befs_small_data small_data[1]; |
| } PACKED befs_inode; |
| |
| /* |
| * B+tree superblock |
| */ |
| |
| #define BEFS_BTREE_MAGIC 0x69f6c2e8 |
| |
| enum btree_types { |
| BTREE_STRING_TYPE = 0, |
| BTREE_INT32_TYPE = 1, |
| BTREE_UINT32_TYPE = 2, |
| BTREE_INT64_TYPE = 3, |
| BTREE_UINT64_TYPE = 4, |
| BTREE_FLOAT_TYPE = 5, |
| BTREE_DOUBLE_TYPE = 6 |
| }; |
| |
| typedef struct { |
| fs32 magic; |
| fs32 node_size; |
| fs32 max_depth; |
| fs32 data_type; |
| fs64 root_node_ptr; |
| fs64 free_node_ptr; |
| fs64 max_size; |
| } PACKED befs_disk_btree_super; |
| |
| typedef struct { |
| u32 magic; |
| u32 node_size; |
| u32 max_depth; |
| u32 data_type; |
| befs_off_t root_node_ptr; |
| befs_off_t free_node_ptr; |
| befs_off_t max_size; |
| } PACKED befs_btree_super; |
| |
| /* |
| * Header structure of each btree node |
| */ |
| typedef struct { |
| fs64 left; |
| fs64 right; |
| fs64 overflow; |
| fs16 all_key_count; |
| fs16 all_key_length; |
| } PACKED befs_btree_nodehead; |
| |
| typedef struct { |
| befs_off_t left; |
| befs_off_t right; |
| befs_off_t overflow; |
| u16 all_key_count; |
| u16 all_key_length; |
| } PACKED befs_host_btree_nodehead; |
| |
| #endif /* _LINUX_BEFS_FS_TYPES */ |