#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <strings.h>
#include <errno.h>
#include <selinux/selinux.h>

static __attribute__ ((__noreturn__)) void usage(const char *progname)
{
	fprintf(stderr, "usage:  %s [ Enforcing | Permissive | 1 | 0 ]\n",
		progname);
	exit(1);
}

int main(int argc, char **argv)
{
	int rc = 0;
	if (argc != 2) {
		usage(argv[0]);
	}

	if (is_selinux_enabled() <= 0) {
		fprintf(stderr, "%s: SELinux is disabled\n", argv[0]);
		return 1;
	}
	if (strlen(argv[1]) == 1 && (argv[1][0] == '0' || argv[1][0] == '1')) {
		rc = security_setenforce(atoi(argv[1]));
	} else {
		if (strcasecmp(argv[1], "enforcing") == 0) {
			rc = security_setenforce(1);
		} else if (strcasecmp(argv[1], "permissive") == 0) {
			rc = security_setenforce(0);
		} else
			usage(argv[0]);
	}
	if (rc < 0) {
		fprintf(stderr, "%s:  security_setenforce() failed:  %s\n", argv[0], strerror(errno));
		return 2;
	}
	return 0;
}