summaryrefslogtreecommitdiff
path: root/include/uapi/linux/bfs_fs.h
diff options
context:
space:
mode:
authorDavid Howells <dhowells@redhat.com>2012-10-13 13:46:48 +0400
committerDavid Howells <dhowells@redhat.com>2012-10-13 13:46:48 +0400
commit607ca46e97a1b6594b29647d98a32d545c24bdff (patch)
tree30f4c0784bfddb57332cdc0678bd06d1e77fa185 /include/uapi/linux/bfs_fs.h
parent08cce05c5a91f5017f4edc9866cf026908c73f9f (diff)
downloadlinux-607ca46e97a1b6594b29647d98a32d545c24bdff.tar.xz
UAPI: (Scripted) Disintegrate include/linux
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'include/uapi/linux/bfs_fs.h')
-rw-r--r--include/uapi/linux/bfs_fs.h81
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 000000000000..1c0b355aa515
--- /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 */