1f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include <unistd.h> 2f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include <sys/types.h> 3f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include <fcntl.h> 4f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include <stdlib.h> 5f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include <stdio.h> 6f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include <errno.h> 7f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include <string.h> 8f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include "selinux_internal.h" 9f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include "policy.h" 10f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#include <limits.h> 11f074036424618c130dacb3464465a8b40bffef5Stephen Smalley 12f074036424618c130dacb3464465a8b40bffef5Stephen Smalley#define SELINUX_INITCON_DIR "/initial_contexts/" 13f074036424618c130dacb3464465a8b40bffef5Stephen Smalley 14ab40ea9bfd71b50138f1482c4764a65ac17d8cafStephen Smalleyint security_get_initial_context(const char * name, char ** con) 15f074036424618c130dacb3464465a8b40bffef5Stephen Smalley{ 16f074036424618c130dacb3464465a8b40bffef5Stephen Smalley char path[PATH_MAX]; 17f074036424618c130dacb3464465a8b40bffef5Stephen Smalley char *buf; 18f074036424618c130dacb3464465a8b40bffef5Stephen Smalley size_t size; 19f074036424618c130dacb3464465a8b40bffef5Stephen Smalley int fd, ret; 20f074036424618c130dacb3464465a8b40bffef5Stephen Smalley 21f074036424618c130dacb3464465a8b40bffef5Stephen Smalley if (!selinux_mnt) { 22f074036424618c130dacb3464465a8b40bffef5Stephen Smalley errno = ENOENT; 23f074036424618c130dacb3464465a8b40bffef5Stephen Smalley return -1; 24f074036424618c130dacb3464465a8b40bffef5Stephen Smalley } 25f074036424618c130dacb3464465a8b40bffef5Stephen Smalley 26f074036424618c130dacb3464465a8b40bffef5Stephen Smalley snprintf(path, sizeof path, "%s%s%s", 27f074036424618c130dacb3464465a8b40bffef5Stephen Smalley selinux_mnt, SELINUX_INITCON_DIR, name); 28f074036424618c130dacb3464465a8b40bffef5Stephen Smalley fd = open(path, O_RDONLY); 29f074036424618c130dacb3464465a8b40bffef5Stephen Smalley if (fd < 0) 30f074036424618c130dacb3464465a8b40bffef5Stephen Smalley return -1; 31f074036424618c130dacb3464465a8b40bffef5Stephen Smalley 32f074036424618c130dacb3464465a8b40bffef5Stephen Smalley size = selinux_page_size; 33f074036424618c130dacb3464465a8b40bffef5Stephen Smalley buf = malloc(size); 34f074036424618c130dacb3464465a8b40bffef5Stephen Smalley if (!buf) { 35f074036424618c130dacb3464465a8b40bffef5Stephen Smalley ret = -1; 36f074036424618c130dacb3464465a8b40bffef5Stephen Smalley goto out; 37f074036424618c130dacb3464465a8b40bffef5Stephen Smalley } 38f074036424618c130dacb3464465a8b40bffef5Stephen Smalley memset(buf, 0, size); 39f074036424618c130dacb3464465a8b40bffef5Stephen Smalley ret = read(fd, buf, size - 1); 40f074036424618c130dacb3464465a8b40bffef5Stephen Smalley if (ret < 0) 41f074036424618c130dacb3464465a8b40bffef5Stephen Smalley goto out2; 42f074036424618c130dacb3464465a8b40bffef5Stephen Smalley 43f074036424618c130dacb3464465a8b40bffef5Stephen Smalley *con = strdup(buf); 44f074036424618c130dacb3464465a8b40bffef5Stephen Smalley if (!(*con)) { 45f074036424618c130dacb3464465a8b40bffef5Stephen Smalley ret = -1; 46f074036424618c130dacb3464465a8b40bffef5Stephen Smalley goto out2; 47f074036424618c130dacb3464465a8b40bffef5Stephen Smalley } 48f074036424618c130dacb3464465a8b40bffef5Stephen Smalley ret = 0; 49f074036424618c130dacb3464465a8b40bffef5Stephen Smalley out2: 50f074036424618c130dacb3464465a8b40bffef5Stephen Smalley free(buf); 51f074036424618c130dacb3464465a8b40bffef5Stephen Smalley out: 52f074036424618c130dacb3464465a8b40bffef5Stephen Smalley close(fd); 53f074036424618c130dacb3464465a8b40bffef5Stephen Smalley return ret; 54f074036424618c130dacb3464465a8b40bffef5Stephen Smalley} 55f074036424618c130dacb3464465a8b40bffef5Stephen Smalley 56