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#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. It's not actually implemented yet, but I'll look into
* it.
*/
#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 8
#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
#define NEW_MINIX_SUPER_MAGIC 0x2468 /* minix V2 - not implemented */
#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)))
struct minix_inode {
unsigned short i_mode;
unsigned short i_uid;
unsigned long i_size;
unsigned long i_time;
unsigned char i_gid;
unsigned char i_nlinks;
unsigned short 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 new_minix_inode {
unsigned short i_mode;
unsigned short i_nlinks;
unsigned short i_uid;
unsigned short i_gid;
unsigned long i_size;
unsigned long i_atime;
unsigned long i_mtime;
unsigned long i_ctime;
unsigned long i_zone[10];
};
/*
* minix super-block data on disk
*/
struct minix_super_block {
unsigned short s_ninodes;
unsigned short s_nzones;
unsigned short s_imap_blocks;
unsigned short s_zmap_blocks;
unsigned short s_firstdatazone;
unsigned short s_log_zone_size;
unsigned long s_max_size;
unsigned short s_magic;
unsigned short s_state;
};
struct minix_dir_entry {
unsigned short 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);
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 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 *);
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
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