ipxe/src/include/gpxe/cpio.h

#ifndef _GPXE_CPIO_H
#define _GPXE_CPIO_H

/** @file
 *
 * CPIO archives
 *
 */

/** A CPIO archive header
 *
 * All field are hexadecimal ASCII numbers padded with '0' on the
 * left to the full width of the field.
 */
struct cpio_header {
	/** The string "070701" or "070702" */
	char c_magic[6];
	/** File inode number */
	char c_ino[8];
	/** File mode and permissions */
	char c_mode[8];
	/** File uid */
	char c_uid[8];
	/** File gid */
	char c_gid[8];
	/** Number of links */
	char c_nlink[8];
	/** Modification time */
	char c_mtime[8];
	/** Size of data field */
	char c_filesize[8];
	/** Major part of file device number */
	char c_maj[8];
	/** Minor part of file device number */
	char c_min[8];
	/** Major part of device node reference */
	char c_rmaj[8];
	/** Minor part of device node reference */
	char c_rmin[8];
	/** Length of filename, including final NUL */
	char c_namesize[8];
	/** Checksum of data field if c_magic is 070702, othersize zero */
	char c_chksum[8];
} __attribute__ (( packed ));

/** CPIO magic */
#define CPIO_MAGIC "070701"

extern void cpio_set_field ( char *field, unsigned long value );

#endif /* _GPXE_CPIO_H */