Age | Commit message (Expand) | Author | Files | Lines |
---|
#ifndef _OMFS_FS_H #define _OMFS_FS_H /* OMFS On-disk structures */ #define OMFS_MAGIC 0xC2993D87 #define OMFS_IMAGIC 0xD2 #define OMFS_DIR 'D' #define OMFS_FILE 'F' #define OMFS_INODE_NORMAL 'e' #define OMFS_INODE_CONTINUATION 'c' #define OMFS_INODE_SYSTEM 's' #define OMFS_NAMELEN 256 #define OMFS_DIR_START 0x1b8 #define OMFS_EXTENT_START 0x1d0 #define OMFS_EXTENT_CONT 0x40 #define OMFS_XOR_COUNT 19 #define OMFS_MAX_BLOCK_SIZE 8192 #define OMFS_MAX_CLUSTER_SIZE 8 #define OMFS_MAX_BLOCKS (1ul << 31) struct omfs_super_block { char s_fill1[256]; __be64 s_root_block; /* block number of omfs_root_block */ __be64 s_num_blocks; /* total number of FS blocks */ __be32 s_magic; /* OMFS_MAGIC */ __be32 s_blocksize; /* size of a block */ __be32 s_mirrors; /* # of mirrors of system blocks */ __be32 s_sys_blocksize; /* size of non-data blocks */ }; struct omfs_header { __be64 h_self; /* FS block where this is located */ __be32 h_body_size; /* size of useful data after header */ __be16 h_crc; /* crc-ccitt of body_size bytes */ char h_fill1[2]; u8 h_version; /* version, always 1 */ char h_type; /* OMFS_INODE_X */ u8 h_magic; /* OMFS_IMAGIC */ u8 h_check_xor; /* XOR of header bytes before this */ __be32 h_fill2; }; struct omfs_root_block { struct omfs_header r_head; /* header */ __be64 r_fill1; __be64 r_num_blocks; /* total number of FS blocks */ __be64 r_root_dir; /* block # of root directory */ __be64 r_bitmap; /* block # of free space bitmap */ __be32 r_blocksize; /* size of a block */ __be32 r_clustersize; /* size allocated for data blocks */ __be64 r_mirrors; /* # of mirrors of system blocks */ char r_name[OMFS_NAMELEN]; /* partition label */ }; struct omfs_inode { struct omfs_header i_head; /* header */ __be64 i_parent; /* parent containing this inode */ __be64 i_sibling; /* next inode in hash bucket */ __be64 i_ctime; /* ctime, in milliseconds */ char i_fill1[35]; char i_type; /* OMFS_[DIR,FILE] */ __be32 i_fill2; char i_fill3[64]; char i_name[OMFS_NAMELEN]; /* filename */ __be64 i_size; /* size of file, in bytes */ }; struct omfs_extent_entry { __be64 e_cluster; /* start location of a set of blocks */ __be64 e_blocks; /* number of blocks after e_cluster */ }; struct omfs_extent { __be64 e_next; /* next extent table location */ __be32 e_extent_count; /* total # extents in this table */ __be32 e_fill; struct omfs_extent_entry e_entry; /* start of extent entries */ }; #endif 2a87d1d9899d8b087c8e'/>
Age | Commit message (Expand) | Author | Files | Lines |
---|