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Add selftests for the three system calls supporting the LSM infrastructure. This set of tests is limited by the differences in access policy enforced by the existing security modules. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Reviewed-by: Mickaël Salaün <mic@digikod.net> Tested-by: Mickaël Salaün <mic@digikod.net> Signed-off-by: Paul Moore <paul@paul-moore.com>
75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Linux Security Module infrastructure tests
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* Tests for the lsm_set_self_attr system call
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*
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* Copyright © 2022 Casey Schaufler <casey@schaufler-ca.com>
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*/
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#define _GNU_SOURCE
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#include <linux/lsm.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include "../kselftest_harness.h"
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#include "common.h"
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TEST(ctx_null_lsm_set_self_attr)
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{
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ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT, NULL,
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sizeof(struct lsm_ctx), 0));
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}
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TEST(size_too_small_lsm_set_self_attr)
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{
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const long page_size = sysconf(_SC_PAGESIZE);
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struct lsm_ctx *ctx = calloc(page_size, 1);
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size_t size = page_size;
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ASSERT_NE(NULL, ctx);
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if (attr_lsm_count()) {
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ASSERT_LE(1, lsm_get_self_attr(LSM_ATTR_CURRENT, ctx, &size,
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0));
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}
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ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT, ctx, 1, 0));
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free(ctx);
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}
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TEST(flags_zero_lsm_set_self_attr)
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{
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const long page_size = sysconf(_SC_PAGESIZE);
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struct lsm_ctx *ctx = calloc(page_size, 1);
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size_t size = page_size;
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ASSERT_NE(NULL, ctx);
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if (attr_lsm_count()) {
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ASSERT_LE(1, lsm_get_self_attr(LSM_ATTR_CURRENT, ctx, &size,
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0));
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}
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ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT, ctx, size, 1));
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free(ctx);
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}
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TEST(flags_overset_lsm_set_self_attr)
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{
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const long page_size = sysconf(_SC_PAGESIZE);
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char *ctx = calloc(page_size, 1);
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size_t size = page_size;
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struct lsm_ctx *tctx = (struct lsm_ctx *)ctx;
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ASSERT_NE(NULL, ctx);
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if (attr_lsm_count()) {
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ASSERT_LE(1, lsm_get_self_attr(LSM_ATTR_CURRENT, tctx, &size,
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0));
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}
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ASSERT_EQ(-1, lsm_set_self_attr(LSM_ATTR_CURRENT | LSM_ATTR_PREV, tctx,
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size, 0));
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free(ctx);
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}
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TEST_HARNESS_MAIN
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