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author | David Woodhouse <David.Woodhouse@intel.com> | 2012-11-21 10:38:13 +0000 |
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committer | David Woodhouse <David.Woodhouse@intel.com> | 2012-11-21 10:38:13 +0000 |
commit | 851462444d421c223965b12b836bef63da61b57f (patch) | |
tree | 495baa14e638817941496c36e1443aed7dae0ea0 /include/uapi/linux/bfs_fs.h | |
parent | 5a6ea4af0907f995dc06df21a9c9ef764c7cd3bc (diff) | |
parent | 6924d99fcdf1a688538a3cdebd1f135c22eec191 (diff) | |
download | op-kernel-dev-851462444d421c223965b12b836bef63da61b57f.zip op-kernel-dev-851462444d421c223965b12b836bef63da61b57f.tar.gz |
Merge branch 'for-3.7' of git://git.infradead.org/users/dedekind/l2-mtd
Conflicts:
drivers/mtd/nand/nand_base.c
Diffstat (limited to 'include/uapi/linux/bfs_fs.h')
-rw-r--r-- | include/uapi/linux/bfs_fs.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/include/uapi/linux/bfs_fs.h b/include/uapi/linux/bfs_fs.h new file mode 100644 index 0000000..1c0b355 --- /dev/null +++ b/include/uapi/linux/bfs_fs.h @@ -0,0 +1,81 @@ +/* + * 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 */ |