#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <sys/param.h>
#include <sys/auxv.h>

int main(int argc, char **argv)
{
	char exe_path[PATH_MAX];
	int error;

	fprintf(stderr, "progname: %s\n", getprogname());
	fprintf(stderr, "argv[0]:  %s\n", argv[0]);

	error = elf_aux_info(AT_EXECPATH, exe_path, sizeof(exe_path));
	if (error == 0)
		fprintf(stderr, "AT_EXECPATH: %s\n", exe_path);
	else
		fprintf(stderr, "elf_aux_info failed: %s\n", strerror(error));
	exit(0);
}