Initial import

1 files changed, 106 insertions, 0 deletions

diff --git a/include/uapi/linux/minix_fs.h b/include/uapi/linux/minix_fs.h
new file mode 100644
index 000000000..13fe09e05
--- /dev/null
+++ b/include/uapi/linux/minix_fs.h
@@ -0,0 +1,106 @@
+#ifndef _LINUX_MINIX_FS_H
+#define _LINUX_MINIX_FS_H
+
+#include <linux/types.h>
+#include <linux/magic.h>
+
+/*
+ * The minix filesystem constants/structures
+ */
+
+/*
+ * Thanks to Kees J Bot for sending me the definitions of the new
+ * minix filesystem (aka V2) with bigger inodes and 32-bit block
+ * pointers.
+ */
+
+#define MINIX_ROOT_INO 1
+
+/* Not the same as the bogus LINK_MAX in <linux/limits.h>. Oh well. */
+#define MINIX_LINK_MAX	250
+#define MINIX2_LINK_MAX	65530
+
+#define MINIX_I_MAP_SLOTS	8
+#define MINIX_Z_MAP_SLOTS	64
+#define MINIX_VALID_FS		0x0001		/* Clean fs. */
+#define MINIX_ERROR_FS		0x0002		/* fs has errors. */
+
+#define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
+
+/*
+ * This is the original minix inode layout on disk.
+ * Note the 8-bit gid and atime and ctime.
+ */
+struct minix_inode {
+	__u16 i_mode;
+	__u16 i_uid;
+	__u32 i_size;
+	__u32 i_time;
+	__u8  i_gid;
+	__u8  i_nlinks;
+	__u16 i_zone[9];
+};
+
+/*
+ * The new minix inode has all the time entries, as well as
+ * long block numbers and a third indirect block (7+1+1+1
+ * instead of 7+1+1). Also, some previously 8-bit values are
+ * now 16-bit. The inode is now 64 bytes instead of 32.
+ */
+struct minix2_inode {
+	__u16 i_mode;
+	__u16 i_nlinks;
+	__u16 i_uid;
+	__u16 i_gid;
+	__u32 i_size;
+	__u32 i_atime;
+	__u32 i_mtime;
+	__u32 i_ctime;
+	__u32 i_zone[10];
+};
+
+/*
+ * minix super-block data on disk
+ */
+struct minix_super_block {
+	__u16 s_ninodes;
+	__u16 s_nzones;
+	__u16 s_imap_blocks;
+	__u16 s_zmap_blocks;
+	__u16 s_firstdatazone;
+	__u16 s_log_zone_size;
+	__u32 s_max_size;
+	__u16 s_magic;
+	__u16 s_state;
+	__u32 s_zones;
+};
+
+/*
+ * V3 minix super-block data on disk
+ */
+struct minix3_super_block {
+	__u32 s_ninodes;
+	__u16 s_pad0;
+	__u16 s_imap_blocks;
+	__u16 s_zmap_blocks;
+	__u16 s_firstdatazone;
+	__u16 s_log_zone_size;
+	__u16 s_pad1;
+	__u32 s_max_size;
+	__u32 s_zones;
+	__u16 s_magic;
+	__u16 s_pad2;
+	__u16 s_blocksize;
+	__u8  s_disk_version;
+};
+
+struct minix_dir_entry {
+	__u16 inode;
+	char name[0];
+};
+
+struct minix3_dir_entry {
+	__u32 inode;
+	char name[0];
+};
+#endif