Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Linux Security Module infrastructure tests
4 * Tests for the lsm_set_self_attr system call
5 *
6 * Copyright © 2022 Casey Schaufler <casey@schaufler-ca.com>
7 */
8
9#define _GNU_SOURCE
10#include <linux/lsm.h>
11#include <string.h>
12#include <stdio.h>
13#include <unistd.h>
14#include <sys/types.h>
15#include "kselftest_harness.h"
16#include "common.h"
17
18TEST(ctx_null_lsm_set_self_attr)
19{
20 ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT, NULL,
21 sizeof(struct lsm_ctx), 0));
22}
23
24TEST(size_too_small_lsm_set_self_attr)
25{
26 const long page_size = sysconf(_SC_PAGESIZE);
27 struct lsm_ctx *ctx = calloc(page_size, 1);
28 __u32 size = page_size;
29
30 ASSERT_NE(NULL, ctx);
31 if (attr_lsm_count()) {
32 ASSERT_LE(1, lsm_get_self_attr(LSM_ATTR_CURRENT, ctx, &size,
33 0));
34 }
35 ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT, ctx, 1, 0));
36
37 free(ctx);
38}
39
40TEST(flags_zero_lsm_set_self_attr)
41{
42 const long page_size = sysconf(_SC_PAGESIZE);
43 struct lsm_ctx *ctx = calloc(page_size, 1);
44 __u32 size = page_size;
45
46 ASSERT_NE(NULL, ctx);
47 if (attr_lsm_count()) {
48 ASSERT_LE(1, lsm_get_self_attr(LSM_ATTR_CURRENT, ctx, &size,
49 0));
50 }
51 ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT, ctx, size, 1));
52
53 free(ctx);
54}
55
56TEST(flags_overset_lsm_set_self_attr)
57{
58 const long page_size = sysconf(_SC_PAGESIZE);
59 struct lsm_ctx *ctx = calloc(page_size, 1);
60 __u32 size = page_size;
61
62 ASSERT_NE(NULL, ctx);
63 if (attr_lsm_count()) {
64 ASSERT_LE(1, lsm_get_self_attr(LSM_ATTR_CURRENT, ctx, &size,
65 0));
66 }
67 ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT | LSM_ATTR_PREV, ctx,
68 size, 0));
69
70 free(ctx);
71}
72
73TEST_HARNESS_MAIN