#include <unistd.h>

#include <sys/types.h>

#include <fcntl.h>

#include <stdlib.h>

#include <errno.h>

#include <string.h>

#include "selinux_internal.h"

#include <stdio.h>

#include "policy.h"

#include "dso.h"

#include <limits.h>

#define DEFAULT_POLICY_VERSION 15

int security_policyvers(void)

{

	int fd, ret;

	char path[PATH_MAX];

	char buf[20];

	unsigned vers = DEFAULT_POLICY_VERSION;

	snprintf(path, sizeof path, "%s/policyvers", selinux_mnt);

	fd = open(path, O_RDONLY);

	if (fd < 0) {

		if (errno == ENOENT)

			return vers;

		else

			return -1;

	}

	memset(buf, 0, sizeof buf);

	ret = read(fd, buf, sizeof buf-1);

	close(fd);

	if (ret < 0)

		return -1;

	if (sscanf(buf, "%u", &vers) != 1)

		return -1;

	return vers;

}

hidden_def(security_policyvers)