diff options
Diffstat (limited to 'include/linux/ext_fs.h')
| -rw-r--r-- | include/linux/ext_fs.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/include/linux/ext_fs.h b/include/linux/ext_fs.h new file mode 100644 index 000000000..58eae0b0a --- /dev/null +++ b/include/linux/ext_fs.h @@ -0,0 +1,110 @@ +#ifndef _LINUX_EXT_FS_H +#define _LINUX_EXT_FS_H + +/* + * The ext filesystem constants/structures + */ + +#define EXT_NAME_LEN 255 +#define EXT_ROOT_INO 1 + +#define EXT_SUPER_MAGIC 0x137D + +#define EXT_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct ext_inode))) + +struct ext_inode { + unsigned short i_mode; + unsigned short i_uid; + unsigned long i_size; + unsigned long i_time; + unsigned short i_gid; + unsigned short i_nlinks; + unsigned long i_zone[12]; +}; + +struct ext_free_inode { + unsigned long count; + unsigned long free[14]; + unsigned long next; +}; + +struct ext_free_block { + unsigned long count; + unsigned long free[254]; + unsigned long next; +}; + +struct ext_super_block { + unsigned long s_ninodes; + unsigned long s_nzones; + unsigned long s_firstfreeblock; + unsigned long s_freeblockscount; + unsigned long s_firstfreeinode; + unsigned long s_freeinodescount; + unsigned long s_firstdatazone; + unsigned long s_log_zone_size; + unsigned long s_max_size; + unsigned long s_reserved1; + unsigned long s_reserved2; + unsigned long s_reserved3; + unsigned long s_reserved4; + unsigned long s_reserved5; + unsigned short s_magic; +}; + +struct ext_dir_entry { + unsigned long inode; + unsigned short rec_len; + unsigned short name_len; + char name[EXT_NAME_LEN]; +}; + +#ifdef __KERNEL__ +extern int ext_open(struct inode * inode, struct file * filp); +extern void ext_release(struct inode * inode, struct file * filp); +extern int ext_lookup(struct inode * dir,const char * name, int len, + struct inode ** result); +extern int ext_create(struct inode * dir,const char * name, int len, int mode, + struct inode ** result); +extern int ext_mkdir(struct inode * dir, const char * name, int len, int mode); +extern int ext_rmdir(struct inode * dir, const char * name, int len); +extern int ext_unlink(struct inode * dir, const char * name, int len); +extern int ext_symlink(struct inode * inode, const char * name, int len, + const char * symname); +extern int ext_link(struct inode * oldinode, struct inode * dir, const char * name, int len); +extern int ext_mknod(struct inode * dir, const char * name, int len, int mode, int rdev); +extern int ext_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 * ext_new_inode(const struct inode * dir); +extern void ext_free_inode(struct inode * inode); +extern unsigned long ext_count_free_inodes(struct super_block *sb); +extern int ext_new_block(struct super_block * sb); +extern void ext_free_block(struct super_block * sb, int block); +extern unsigned long ext_count_free_blocks(struct super_block *sb); + +extern int ext_bmap(struct inode *,int); + +extern struct buffer_head * ext_getblk(struct inode *, int, int); +extern struct buffer_head * ext_bread(struct inode *, int, int); + +extern void ext_truncate(struct inode *); +extern void ext_put_super(struct super_block *); +extern void ext_write_super(struct super_block *); +extern struct super_block *ext_read_super(struct super_block *,void *,int); +extern void ext_read_inode(struct inode *); +extern void ext_write_inode(struct inode *); +extern void ext_put_inode(struct inode *); +extern void ext_statfs(struct super_block *, struct statfs *); +extern int ext_sync_inode(struct inode *); +extern int ext_sync_file(struct inode *, struct file *); + +extern int ext_lseek(struct inode *, struct file *, off_t, int); +extern int ext_read(struct inode *, struct file *, char *, int); +extern int ext_write(struct inode *, struct file *, char *, int); + +extern struct inode_operations ext_file_inode_operations; +extern struct inode_operations ext_dir_inode_operations; +extern struct inode_operations ext_symlink_inode_operations; + +#endif /*__KERNEL__ */ +#endif |