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
is_selinux_enabled(void)11 int 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
hidden_def(is_selinux_enabled)19 hidden_def(is_selinux_enabled)
20
21 /*
22 * Function: is_selinux_mls_enabled()
23 * Return: 1 on success
24 * 0 on failure
25 */
26 int 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
54 hidden_def(is_selinux_mls_enabled)
55