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#ifdef ANDROID
17	return (selinux_mnt ? 1 : 0);
18#else
19	return (selinux_mnt && has_selinux_config);
20#endif
21}
22
23hidden_def(is_selinux_enabled)
24
25/*
26 * Function: is_selinux_mls_enabled()
27 * Return:   1 on success
28 *	     0 on failure
29 */
30int is_selinux_mls_enabled(void)
31{
32	char buf[20], path[PATH_MAX];
33	int fd, ret, enabled = 0;
34
35	if (!selinux_mnt)
36		return enabled;
37
38	snprintf(path, sizeof path, "%s/mls", selinux_mnt);
39	fd = open(path, O_RDONLY);
40	if (fd < 0)
41		return enabled;
42
43	memset(buf, 0, sizeof buf);
44
45	do {
46		ret = read(fd, buf, sizeof buf - 1);
47	} while (ret < 0 && errno == EINTR);
48	close(fd);
49	if (ret < 0)
50		return enabled;
51
52	if (!strcmp(buf, "1"))
53		enabled = 1;
54
55	return enabled;
56}
57
58hidden_def(is_selinux_mls_enabled)
59