Stephen Smalley | f074036 | 2012-01-04 12:30:47 -0500 | [diff] [blame] | 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 | |
| 11 | int is_selinux_enabled(void) |
| 12 | { |
Stephen Smalley | f074036 | 2012-01-04 12:30:47 -0500 | [diff] [blame] | 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. */ |
Stephen Smalley | 801cd60 | 2015-04-17 09:25:51 -0400 | [diff] [blame] | 16 | return (selinux_mnt ? 1 : 0); |
Stephen Smalley | f074036 | 2012-01-04 12:30:47 -0500 | [diff] [blame] | 17 | } |
| 18 | |
| 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) |