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#ifndef _IPXE_ZLIB_H
#define _IPXE_ZLIB_H
/** @file
*
* zlib compressed images
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <byteswap.h>
#include <ipxe/image.h>
#include <ipxe/deflate.h>
/** zlib magic header */
union zlib_magic {
/** Compression method and flags */
uint8_t cmf;
/** Check value */
uint16_t check;
} __attribute__ (( packed ));
/**
* Check that zlib magic header is valid
*
* @v magic Magic header
* @ret is_valid Magic header is valid
*/
static inline int zlib_magic_is_valid ( union zlib_magic *magic ) {
/* Check magic value as per RFC 6713 */
return ( ( ( magic->cmf & 0x8f ) == 0x08 ) &&
( ( be16_to_cpu ( magic->check ) % 31 ) == 0 ) );
}
extern int zlib_deflate ( enum deflate_format format, struct deflate_chunk *in,
struct image *extracted );
extern struct image_type zlib_image_type __image_type ( PROBE_NORMAL );
#endif /* _IPXE_ZLIB_H */
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