#ifndef _ISOFS_FS_H#define _ISOFS_FS_H#include <linux/types.h>/* * The isofs filesystem constants/structures *//* This part borrowed from the bsd386 isofs */#define ISODCL(from, to) (to - from + 1)struct iso_volume_descriptor {	char type[ISODCL(1,1)]; /* 711 */	char id[ISODCL(2,6)];	char version[ISODCL(7,7)];	char data[ISODCL(8,2048)];};/* volume descriptor types */#define ISO_VD_PRIMARY 1#define ISO_VD_END 255#define ISO_STANDARD_ID "CD001"struct iso_primary_descriptor {	char type			[ISODCL (  1,   1)]; /* 711 */	char id				[ISODCL (  2,   6)];	char version			[ISODCL (  7,   7)]; /* 711 */	char unused1			[ISODCL (  8,   8)];	char system_id			[ISODCL (  9,  40)]; /* achars */	char volume_id			[ISODCL ( 41,  72)]; /* dchars */	char unused2			[ISODCL ( 73,  80)];	char volume_space_size		[ISODCL ( 81,  88)]; /* 733 */	char unused3			[ISODCL ( 89, 120)];	char volume_set_size		[ISODCL (121, 124)]; /* 723 */	char volume_sequence_number	[ISODCL (125, 128)]; /* 723 */	char logical_block_size		[ISODCL (129, 132)]; /* 723 */	char path_table_size		[ISODCL (133, 140)]; /* 733 */	char type_l_path_table		[ISODCL (141, 144)]; /* 731 */	char opt_type_l_path_table	[ISODCL (145, 148)]; /* 731 */	char type_m_path_table		[ISODCL (149, 152)]; /* 732 */	char opt_type_m_path_table	[ISODCL (153, 156)]; /* 732 */	char root_directory_record	[ISODCL (157, 190)]; /* 9.1 */	char volume_set_id		[ISODCL (191, 318)]; /* dchars */	char publisher_id		[ISODCL (319, 446)]; /* achars */	char preparer_id		[ISODCL (447, 574)]; /* achars */	char application_id		[ISODCL (575, 702)]; /* achars */	char copyright_file_id		[ISODCL (703, 739)]; /* 7.5 dchars */	char abstract_file_id		[ISODCL (740, 776)]; /* 7.5 dchars */	char bibliographic_file_id	[ISODCL (777, 813)]; /* 7.5 dchars */	char creation_date		[ISODCL (814, 830)]; /* 8.4.26.1 */	char modification_date		[ISODCL (831, 847)]; /* 8.4.26.1 */	char expiration_date		[ISODCL (848, 864)]; /* 8.4.26.1 */	char effective_date		[ISODCL (865, 881)]; /* 8.4.26.1 */	char file_structure_version	[ISODCL (882, 882)]; /* 711 */	char unused4			[ISODCL (883, 883)];	char application_data		[ISODCL (884, 1395)];	char unused5			[ISODCL (1396, 2048)];};#define HS_STANDARD_ID "CDROM"struct  hs_volume_descriptor {	char foo			[ISODCL (  1,   8)]; /* 733 */	char type			[ISODCL (  9,   9)]; /* 711 */	char id				[ISODCL ( 10,  14)];	char version			[ISODCL ( 15,  15)]; /* 711 */	char data[ISODCL(16,2048)];};struct hs_primary_descriptor {	char foo			[ISODCL (  1,   8)]; /* 733 */	char type			[ISODCL (  9,   9)]; /* 711 */	char id				[ISODCL ( 10,  14)];	char version			[ISODCL ( 15,  15)]; /* 711 */	char unused1			[ISODCL ( 16,  16)]; /* 711 */	char system_id			[ISODCL ( 17,  48)]; /* achars */	char volume_id			[ISODCL ( 49,  80)]; /* dchars */	char unused2			[ISODCL ( 81,  88)]; /* 733 */	char volume_space_size		[ISODCL ( 89,  96)]; /* 733 */	char unused3			[ISODCL ( 97, 128)]; /* 733 */	char volume_set_size		[ISODCL (129, 132)]; /* 723 */	char volume_sequence_number	[ISODCL (133, 136)]; /* 723 */	char logical_block_size		[ISODCL (137, 140)]; /* 723 */	char path_table_size		[ISODCL (141, 148)]; /* 733 */	char type_l_path_table		[ISODCL (149, 152)]; /* 731 */	char unused4			[ISODCL (153, 180)]; /* 733 */	char root_directory_record	[ISODCL (181, 214)]; /* 9.1 */};/* We use this to help us look up the parent inode numbers. */struct iso_path_table{	unsigned char  name_len[2];	/* 721 */	char extent[4];		/* 731 */	char  parent[2];	/* 721 */	char name[0];};/* high sierra is identical to iso, except that the date is only 6 bytes, and   there is an extra reserved byte after the flags */struct iso_directory_record {	char length			[ISODCL (1, 1)]; /* 711 */	char ext_attr_length		[ISODCL (2, 2)]; /* 711 */	char extent			[ISODCL (3, 10)]; /* 733 */	char size			[ISODCL (11, 18)]; /* 733 */	char date			[ISODCL (19, 25)]; /* 7 by 711 */	char flags			[ISODCL (26, 26)];	char file_unit_size		[ISODCL (27, 27)]; /* 711 */	char interleave			[ISODCL (28, 28)]; /* 711 */	char volume_sequence_number	[ISODCL (29, 32)]; /* 723 */	unsigned char name_len		[ISODCL (33, 33)]; /* 711 */	char name			[0];};extern int isonum_711(char *);extern int isonum_712(char *);extern int isonum_721(char *);extern int isonum_722(char *);extern int isonum_723(char *);extern int isonum_731(char *);extern int isonum_732(char *);extern int isonum_733(char *);extern int iso_date(char *, int);extern int parse_rock_ridge_inode(struct iso_directory_record *, struct inode *);extern int get_rock_ridge_filename(struct iso_directory_record *, char ** name, int * len, struct inode *);extern char * get_rock_ridge_symlink(struct inode *);extern int find_rock_ridge_relocation(struct iso_directory_record *, struct inode *);#define ISOFS_BLOCK_BITS 11#define ISOFS_BLOCK_SIZE 2048#define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize)#define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits)#if 0#ifdef ISOFS_FIXED_BLOCKSIZE/* We use these until the buffer cache supports 2048 */#define ISOFS_BUFFER_BITS 10#define ISOFS_BUFFER_SIZE 1024#define ISOFS_BLOCK_NUMBER(X) (X<<1)#else#define ISOFS_BUFFER_BITS 11#define ISOFS_BUFFER_SIZE 2048#define ISOFS_BLOCK_NUMBER(X) (X)#endif#endif#define ISOFS_SUPER_MAGIC 0x9660#define ISOFS_FILE_UNKNOWN 0#define ISOFS_FILE_TEXT 1#define ISOFS_FILE_BINARY 2#define ISOFS_FILE_TEXT_M 3/* The stuff that follows may be totally unneeded. I have not checked to see  which prototypes we are still using.  */extern int isofs_open(struct inode * inode, struct file * filp);extern void isofs_release(struct inode * inode, struct file * filp);extern int isofs_lookup(struct inode * dir,const char * name, int len,	struct inode ** result);extern unsigned long isofs_count_free_inodes(struct super_block *sb);extern int isofs_new_block(int dev);extern int isofs_free_block(int dev, int block);extern int isofs_bmap(struct inode *,int);extern void isofs_put_super(struct super_block *);extern struct super_block *isofs_read_super(struct super_block *,void *,int);extern void isofs_read_inode(struct inode *);extern void isofs_put_inode(struct inode *);extern void isofs_statfs(struct super_block *, struct statfs *);extern int isofs_lseek(struct inode *, struct file *, off_t, int);extern int isofs_read(struct inode *, struct file *, char *, int);extern int isofs_lookup_grandparent(struct inode *, int);extern struct inode_operations isofs_file_inode_operations;extern struct inode_operations isofs_dir_inode_operations;extern struct inode_operations isofs_symlink_inode_operations;extern struct inode_operations isofs_chrdev_inode_operations;extern struct inode_operations isofs_blkdev_inode_operations;extern struct inode_operations isofs_fifo_inode_operations;struct lookup_cache{  unsigned long dir; /* If this matches... */  dev_t dev;  /* And this matches */  unsigned short dlen; /* and this matches... */  char filename[256]; /* and this matches... */  unsigned long ino; /* Then this is the file we are looking for */};extern struct lookup_cache cache;/* The following macros are used to check for memory leaks. */#ifdef LEAK_CHECK#define free_s leak_check_free_s#define malloc leak_check_malloc#define bread leak_check_bread#define brelse leak_check_brelseextern void * leak_check_malloc(unsigned int size);extern void leak_check_free_s(void * obj, int size);extern struct buffer_head * leak_check_bread(int dev, int block, int size);extern void leak_check_brelse(struct buffer_head * bh);#endif /* LEAK_CHECK */#endif