1#include <unistd.h>
2#include <fcntl.h>
3#include <string.h>
4#include "selinux_internal.h"
5#include <stdlib.h>
6#include <errno.h>
7#include <limits.h>
8#include <stdio.h>
9#include "policy.h"
10
11int is_selinux_enabled(void)
12{
13	/* init_selinuxmnt() gets called before this function. We
14 	 * will assume that if a selinux file system is mounted, then
15 	 * selinux is enabled. */
16	return (selinux_mnt ? 1 : 0);
17}
18
19hidden_def(is_selinux_enabled)
20
21/*
22 * Function: is_selinux_mls_enabled()
23 * Return:   1 on success
24 *	     0 on failure
25 */
26int is_selinux_mls_enabled(void)
27{
28	char buf[20], path[PATH_MAX];
29	int fd, ret, enabled = 0;
30
31	if (!selinux_mnt)
32		return enabled;
33
34	snprintf(path, sizeof path, "%s/mls", selinux_mnt);
35	fd = open(path, O_RDONLY);
36	if (fd < 0)
37		return enabled;
38
39	memset(buf, 0, sizeof buf);
40
41	do {
42		ret = read(fd, buf, sizeof buf - 1);
43	} while (ret < 0 && errno == EINTR);
44	close(fd);
45	if (ret < 0)
46		return enabled;
47
48	if (!strcmp(buf, "1"))
49		enabled = 1;
50
51	return enabled;
52}
53
54hidden_def(is_selinux_mls_enabled)
55