/*
 * ecma119_read.h
 * 
 * Defines structures for reading from a iso image.
 */

#ifndef ECMA119_READ_H_
#define ECMA119_READ_H_

#include <stdint.h>

#include "libisofs.h"

enum read_error {
	LIBISOFS_READ_OK = 0,
	LIBISOFS_READ_FAILURE, /**< Truncated image or read error */
	LIBISOFS_WRONG_PVM, /**< Incorrect PVM */
	LIBISOFS_UNSUPPORTED_IMAGE, /**< Format not supported (interleaved...) */
	LIBISOFS_WRONG_RR /**< Wrong RR/SUSP extension format */ 
};

/**
 * Should the RR extensions be read?
 */
enum read_rr_ext {
	RR_EXT_NO = 0, /*< Do not use RR extensions */
	RR_EXT_110, /*< RR extensions conforming version 1.10 */
	RR_EXT_112  /*< RR extensions conforming version 1.12 */
};

/**
 * Structure that keeps info needed in the read process.
 */
struct iso_read_info {
	struct data_source *src;
	enum read_error error;
	
	enum read_rr_ext rr; /*< If we need to read RR extensions. i.e., if the image
	         *  contains RR extensions, and the user wants to read them. */
	ino_t ino; /*< RR version 1.10 does not have file serial numbers, we
	            *  need to generate it */
	uint8_t len_skp; /*< bytes skipped within the System Use field of a
	                     directory record, before the beginning of the SUSP
	                     system user entries. See IEEE 1281, SUSP. 5.3. */
	                     
	unsigned int norock:1; /*< Do not read Rock Ridge extensions */
	unsigned int hasRR:1;  /*< It will be set to 1 if RR extensions are present,
	                           to 0 if not. */
};



#endif /*ECMA119_READ_H_*/