minix_fs.h
上传用户:szlgq88
上传日期:2009-04-28
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文件大小:2k
- #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