Stephen Smalley | f074036 | 2012-01-04 12:30:47 -0500 | [diff] [blame] | 1 | #include <unistd.h> |
| 2 | #include <sys/types.h> |
| 3 | #include <fcntl.h> |
| 4 | #include <stdlib.h> |
| 5 | #include <stdio.h> |
| 6 | #include <errno.h> |
| 7 | #include <string.h> |
| 8 | #include "selinux_internal.h" |
| 9 | #include "policy.h" |
| 10 | #include <limits.h> |
| 11 | |
| 12 | #define SELINUX_INITCON_DIR "/initial_contexts/" |
| 13 | |
Stephen Smalley | ab40ea9 | 2014-02-19 09:16:17 -0500 | [diff] [blame^] | 14 | int security_get_initial_context(const char * name, char ** con) |
Stephen Smalley | f074036 | 2012-01-04 12:30:47 -0500 | [diff] [blame] | 15 | { |
| 16 | char path[PATH_MAX]; |
| 17 | char *buf; |
| 18 | size_t size; |
| 19 | int fd, ret; |
| 20 | |
| 21 | if (!selinux_mnt) { |
| 22 | errno = ENOENT; |
| 23 | return -1; |
| 24 | } |
| 25 | |
| 26 | snprintf(path, sizeof path, "%s%s%s", |
| 27 | selinux_mnt, SELINUX_INITCON_DIR, name); |
| 28 | fd = open(path, O_RDONLY); |
| 29 | if (fd < 0) |
| 30 | return -1; |
| 31 | |
| 32 | size = selinux_page_size; |
| 33 | buf = malloc(size); |
| 34 | if (!buf) { |
| 35 | ret = -1; |
| 36 | goto out; |
| 37 | } |
| 38 | memset(buf, 0, size); |
| 39 | ret = read(fd, buf, size - 1); |
| 40 | if (ret < 0) |
| 41 | goto out2; |
| 42 | |
| 43 | *con = strdup(buf); |
| 44 | if (!(*con)) { |
| 45 | ret = -1; |
| 46 | goto out2; |
| 47 | } |
| 48 | ret = 0; |
| 49 | out2: |
| 50 | free(buf); |
| 51 | out: |
| 52 | close(fd); |
| 53 | return ret; |
| 54 | } |
| 55 | |