diff options
Diffstat (limited to 'mkminix-0.1/linux/minix_fs.h')
| -rw-r--r-- | mkminix-0.1/linux/minix_fs.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/mkminix-0.1/linux/minix_fs.h b/mkminix-0.1/linux/minix_fs.h new file mode 100644 index 000000000..3bc020fcd --- /dev/null +++ b/mkminix-0.1/linux/minix_fs.h @@ -0,0 +1,135 @@ +#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 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))) + +#define MINIX_V1 0x0001 /* original minix fs */ +#define MINIX_V2 0x0002 /* minix V2 fs */ + +#define INODE_VERSION(inode) inode->i_sb->u.minix_sb.s_version + +/* + * 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]; +}; + +#ifdef __KERNEL__ + +extern int minix_lookup(struct inode * dir,const char * name, int len, + struct inode ** result); +extern int minix_create(struct inode * dir,const char * name, int len, int mode, + struct inode ** result); +extern int minix_mkdir(struct inode * dir, const char * name, int len, int mode); +extern int minix_rmdir(struct inode * dir, const char * name, int len); +extern int minix_unlink(struct inode * dir, const char * name, int len); +extern int minix_symlink(struct inode * inode, const char * name, int len, + const char * symname); +extern int minix_link(struct inode * oldinode, struct inode * dir, const char * name, int len); +extern int minix_mknod(struct inode * dir, const char * name, int len, int mode, int rdev); +extern int minix_rename(struct inode * old_dir, const char * old_name, int old_len, + struct inode * new_dir, const char * new_name, int new_len, int must_be_dir); +extern struct inode * minix_new_inode(const struct inode * dir); +extern void minix_free_inode(struct inode * inode); +extern unsigned long minix_count_free_inodes(struct super_block *sb); +extern int minix_new_block(struct super_block * sb); +extern void minix_free_block(struct super_block * sb, int block); +extern unsigned long minix_count_free_blocks(struct super_block *sb); + +extern int minix_bmap(struct inode *,int); + +extern struct buffer_head * minix_getblk(struct inode *, int, int); +extern struct buffer_head * minix_bread(struct inode *, int, int); + +extern void minix_truncate(struct inode *); +extern void minix_put_super(struct super_block *); +extern struct super_block *minix_read_super(struct super_block *,void *,int); +extern int init_minix_fs(void); +extern void minix_write_super(struct super_block *); +extern int minix_remount (struct super_block * sb, int * flags, char * data); +extern void minix_read_inode(struct inode *); +extern void minix_write_inode(struct inode *); +extern void minix_put_inode(struct inode *); +extern void minix_statfs(struct super_block *, struct statfs *, int); +extern int minix_sync_inode(struct inode *); +extern int minix_sync_file(struct inode *, struct file *); + +extern struct inode_operations minix_file_inode_operations; +extern struct inode_operations minix_dir_inode_operations; +extern struct inode_operations minix_symlink_inode_operations; + +#endif /* __KERNEL__ */ + +#endif |