#include <limits.h>

#include <unistd.h>

#include <fcntl.h>

#include <string.h>

#include <errno.h>

#include "syscall.h"

extern const struct __psx_vtbl *  __psx_vtbl;

char * realpath(const char * restrict filename, char * restrict resolved)

{

	int  ecode;

	char buf[PATH_MAX];

	ecode = filename

		? __syscall(SYS_fs_rpath,

			AT_FDCWD,filename,

			O_NONBLOCK|O_CLOEXEC,

			buf,sizeof(buf))

		: -EINVAL;

	if (ecode < 0) {

		errno = -ecode;

		return 0;

	}

	return resolved

		? strcpy(resolved,buf)

		: strdup(buf);

}