/* *	include/linux/bfs_fs.h - BFS data structures on disk. *	Copyright (C) 1999 Tigran Aivazian <tigran@veritas.com> */ #ifndef _LINUX_BFS_FS_H#define _LINUX_BFS_FS_H #include <linux/types.h> #define BFS_BSIZE_BITS		9#define BFS_BSIZE		(1<<BFS_BSIZE_BITS) #define BFS_MAGIC		0x1BADFACE#define BFS_ROOT_INO		2#define BFS_INODES_PER_BLOCK	8 /* SVR4 vnode type values (bfs_inode->i_vtype) */#define BFS_VDIR 2L#define BFS_VREG 1L /* BFS inode layout on disk */struct bfs_inode {	__le16 i_ino;	__u16 i_unused;	__le32 i_sblock;	__le32 i_eblock;	__le32 i_eoffset;	__le32 i_vtype;	__le32 i_mode;	__le32 i_uid;	__le32 i_gid;	__le32 i_nlink;	__le32 i_atime;	__le32 i_mtime;	__le32 i_ctime;	__u32 i_padding[4];}; #define BFS_NAMELEN		14	#define BFS_DIRENT_SIZE		16#define BFS_DIRS_PER_BLOCK	32 struct bfs_dirent {	__le16 ino;	char name[BFS_NAMELEN];}; /* BFS superblock layout on disk */struct bfs_super_block {	__le32 s_magic;	__le32 s_start;	__le32 s_end;	__le32 s_from;	__le32 s_to;	__s32 s_bfrom;	__s32 s_bto;	char  s_fsname[6];	char  s_volume[6];	__u32 s_padding[118];};  #define BFS_OFF2INO(offset) \        ((((offset) - BFS_BSIZE) / sizeof(struct bfs_inode)) + BFS_ROOT_INO) #define BFS_INO2OFF(ino) \	((__u32)(((ino) - BFS_ROOT_INO) * sizeof(struct bfs_inode)) + BFS_BSIZE)#define BFS_NZFILESIZE(ip) \        ((le32_to_cpu((ip)->i_eoffset) + 1) -  le32_to_cpu((ip)->i_sblock) * BFS_BSIZE) #define BFS_FILESIZE(ip) \        ((ip)->i_sblock == 0 ? 0 : BFS_NZFILESIZE(ip)) #define BFS_FILEBLOCKS(ip) \        ((ip)->i_sblock == 0 ? 0 : (le32_to_cpu((ip)->i_eblock) + 1) -  le32_to_cpu((ip)->i_sblock))#define BFS_UNCLEAN(bfs_sb, sb)	\	((le32_to_cpu(bfs_sb->s_from) != -1) && (le32_to_cpu(bfs_sb->s_to) != -1) && !(sb->s_flags & MS_RDONLY))  #endif	/* _LINUX_BFS_FS_H */