75 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Linux Security Module infrastructure tests4 * Tests for the lsm_set_self_attr system call5 *6 * Copyright © 2022 Casey Schaufler <casey@schaufler-ca.com>7 */8 9#define _GNU_SOURCE10#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 char *ctx = calloc(page_size, 1);60 __u32 size = page_size;61 struct lsm_ctx *tctx = (struct lsm_ctx *)ctx;62 63 ASSERT_NE(NULL, ctx);64 if (attr_lsm_count()) {65 ASSERT_LE(1, lsm_get_self_attr(LSM_ATTR_CURRENT, tctx, &size,66 0));67 }68 ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT | LSM_ATTR_PREV, tctx,69 size, 0));70 71 free(ctx);72}73 74TEST_HARNESS_MAIN75