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-rw-r--r--include/linux/minix_fs.h85
1 files changed, 85 insertions, 0 deletions
diff --git a/include/linux/minix_fs.h b/include/linux/minix_fs.h
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index 00000000000..1ecc3cc8cef
--- /dev/null
+++ b/include/linux/minix_fs.h
@@ -0,0 +1,85 @@
+#ifndef _LINUX_MINIX_FS_H
+#define _LINUX_MINIX_FS_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_SUPER_MAGIC 0x137F /* original minix fs */
+#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
+#define MINIX2_SUPER_MAGIC 0x2468 /* minix V2 fs */
+#define MINIX2_SUPER_MAGIC2 0x2478 /* minix V2 fs, 30 char names */
+#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)))
+#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_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;
+};
+
+struct minix_dir_entry {
+ __u16 inode;
+ char name[0];
+};
+
+#endif