| #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))) |
| |
| #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__ |
| |
| /* |
| * change the define below to 0 if you want names > info->s_namelen chars to be |
| * truncated. Else they will be disallowed (ENAMETOOLONG). |
| */ |
| #define NO_TRUNCATE 1 |
| |
| extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **); |
| extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **); |
| extern struct inode * minix_new_inode(const struct inode * dir, int * error); |
| 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 inode * inode); |
| extern void minix_free_block(struct inode * inode, int block); |
| extern unsigned long minix_count_free_blocks(struct super_block *sb); |
| |
| extern void V1_minix_truncate(struct inode *); |
| extern void V2_minix_truncate(struct inode *); |
| extern void minix_truncate(struct inode *); |
| extern int minix_sync_inode(struct inode *); |
| extern void minix_set_inode(struct inode *, dev_t); |
| extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int); |
| extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int); |
| |
| extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**); |
| extern int minix_add_link(struct dentry*, struct inode*); |
| extern int minix_delete_entry(struct minix_dir_entry*, struct page*); |
| extern int minix_make_empty(struct inode*, struct inode*); |
| extern int minix_empty_dir(struct inode*); |
| extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*); |
| extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**); |
| extern ino_t minix_inode_by_name(struct dentry*); |
| |
| extern int minix_sync_file(struct file *, struct dentry *, int); |
| |
| extern struct inode_operations minix_file_inode_operations; |
| extern struct inode_operations minix_dir_inode_operations; |
| extern struct file_operations minix_file_operations; |
| extern struct file_operations minix_dir_operations; |
| extern struct dentry_operations minix_dentry_operations; |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif |