[PATCH v3 9/9] LSM: selftests for Linux Security Module infrastructure syscalls
Casey Schaufler
casey at schaufler-ca.com
Wed Nov 23 20:15:52 UTC 2022
Add selftests for the three system calls supporting the LSM
infrastructure.
Signed-off-by: Casey Schaufler <casey at schaufler-ca.com>
---
tools/testing/selftests/Makefile | 1 +
tools/testing/selftests/lsm/Makefile | 13 +
tools/testing/selftests/lsm/config | 2 +
.../selftests/lsm/lsm_get_self_attr_test.c | 268 ++++++++++++++
.../selftests/lsm/lsm_module_list_test.c | 149 ++++++++
.../selftests/lsm/lsm_set_self_attr_test.c | 328 ++++++++++++++++++
6 files changed, 761 insertions(+)
create mode 100644 tools/testing/selftests/lsm/Makefile
create mode 100644 tools/testing/selftests/lsm/config
create mode 100644 tools/testing/selftests/lsm/lsm_get_self_attr_test.c
create mode 100644 tools/testing/selftests/lsm/lsm_module_list_test.c
create mode 100644 tools/testing/selftests/lsm/lsm_set_self_attr_test.c
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index f07aef7c592c..ee7e93bf956d 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -36,6 +36,7 @@ TARGETS += landlock
TARGETS += lib
TARGETS += livepatch
TARGETS += lkdtm
+TARGETS += lsm
TARGETS += membarrier
TARGETS += memfd
TARGETS += memory-hotplug
diff --git a/tools/testing/selftests/lsm/Makefile b/tools/testing/selftests/lsm/Makefile
new file mode 100644
index 000000000000..601974fdd9b8
--- /dev/null
+++ b/tools/testing/selftests/lsm/Makefile
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# First run: make -C ../../../.. headers_install
+
+CFLAGS += -Wall -O2 $(KHDR_INCLUDES)
+
+TEST_GEN_PROGS := lsm_get_self_attr_test lsm_module_list_test \
+ lsm_set_self_attr_test
+
+include ../lib.mk
+
+$(TEST_GEN_PROGS):
+
diff --git a/tools/testing/selftests/lsm/config b/tools/testing/selftests/lsm/config
new file mode 100644
index 000000000000..afb887715f64
--- /dev/null
+++ b/tools/testing/selftests/lsm/config
@@ -0,0 +1,2 @@
+CONFIG_SYSFS=y
+CONFIG_SECURITY=y
diff --git a/tools/testing/selftests/lsm/lsm_get_self_attr_test.c b/tools/testing/selftests/lsm/lsm_get_self_attr_test.c
new file mode 100644
index 000000000000..6f7f72c25cda
--- /dev/null
+++ b/tools/testing/selftests/lsm/lsm_get_self_attr_test.c
@@ -0,0 +1,268 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Linux Security Module infrastructure tests
+ * Tests for the lsm_get_self_attr system call
+ *
+ * Copyright © 2022 Casey Schaufler <casey at schaufler-ca.com>
+ * Copyright © 2022 Intel Corporation
+ */
+
+#define _GNU_SOURCE
+#include <linux/lsm.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include "../kselftest_harness.h"
+
+#define PROCATTR "/proc/self/attr/"
+
+static int read_proc_attr(const char *attr, char *value, __kernel_size_t size)
+{
+ FILE *fp;
+ int len;
+ char *path;
+
+ len = strlen(PROCATTR) + strlen(attr) + 1;
+ path = calloc(len, 1);
+ if (path == NULL)
+ return -1;
+ sprintf(path, "%s%s", PROCATTR, attr);
+
+ fp = fopen(path, "r");
+ free(path);
+
+ if (fp == NULL)
+ return -1;
+ if (fread(value, 1, size, fp) <= 0)
+ return -1;
+ fclose(fp);
+
+ path = strchr(value, '\n');
+ if (path)
+ *path = '\0';
+
+ return 0;
+}
+
+static struct lsm_ctx *next_ctx(struct lsm_ctx *ctxp)
+{
+ void *vp;
+
+ vp = (void *)ctxp + sizeof(*ctxp) + ctxp->ctx_len;
+ return (struct lsm_ctx *)vp;
+}
+
+TEST(size_null_lsm_get_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *ctx = calloc(page_size, 1);
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_EQ(-1, syscall(__NR_lsm_get_self_attr, ctx, NULL,
+ LSM_ATTR_CURRENT));
+ ASSERT_EQ(EFAULT, errno);
+
+ free(ctx);
+}
+
+TEST(ctx_null_lsm_get_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ __kernel_size_t size = page_size;
+
+ ASSERT_EQ(-1, syscall(__NR_lsm_get_self_attr, NULL, &size,
+ LSM_ATTR_CURRENT));
+ ASSERT_EQ(EFAULT, errno);
+ ASSERT_NE(1, size);
+}
+
+TEST(size_too_small_lsm_get_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *ctx = calloc(page_size, 1);
+ __kernel_size_t size = 1;
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_EQ(-1, syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_CURRENT));
+ ASSERT_EQ(ERANGE, errno);
+ ASSERT_NE(1, size);
+
+ free(ctx);
+}
+
+TEST(flags_zero_lsm_get_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *ctx = calloc(page_size, 1);
+ __kernel_size_t size = page_size;
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_EQ(-1, syscall(__NR_lsm_get_self_attr, ctx, &size, 0));
+ ASSERT_EQ(EINVAL, errno);
+ ASSERT_EQ(page_size, size);
+
+ free(ctx);
+}
+
+TEST(flags_overset_lsm_get_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *ctx = calloc(page_size, 1);
+ __kernel_size_t size = page_size;
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_EQ(-1, syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_CURRENT | LSM_ATTR_PREV));
+ ASSERT_EQ(EINVAL, errno);
+ ASSERT_EQ(page_size, size);
+
+ free(ctx);
+}
+
+TEST(basic_lsm_get_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ __kernel_size_t size = page_size;
+ struct lsm_ctx *ctx = calloc(page_size, 1);
+ struct lsm_ctx *tctx = NULL;
+ __u32 *syscall_lsms = calloc(page_size, 1);
+ char *attr = calloc(page_size, 1);
+ int cnt_current = 0;
+ int cnt_exec = 0;
+ int cnt_fscreate = 0;
+ int cnt_keycreate = 0;
+ int cnt_prev = 0;
+ int cnt_sockcreate = 0;
+ int lsmcount;
+ int count;
+ int i;
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_NE(NULL, syscall_lsms);
+
+ lsmcount = syscall(__NR_lsm_module_list, syscall_lsms, &size, 0);
+ ASSERT_LE(1, lsmcount);
+
+ for (i = 0; i < lsmcount; i++) {
+ switch (syscall_lsms[i]) {
+ case LSM_ID_SELINUX:
+ cnt_current++;
+ cnt_exec++;
+ cnt_fscreate++;
+ cnt_keycreate++;
+ cnt_prev++;
+ cnt_sockcreate++;
+ break;
+ case LSM_ID_SMACK:
+ cnt_current++;
+ break;
+ case LSM_ID_APPARMOR:
+ cnt_current++;
+ cnt_exec++;
+ cnt_prev++;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (cnt_current) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_CURRENT);
+ ASSERT_EQ(cnt_current, count);
+ tctx = ctx;
+ ASSERT_EQ(0, read_proc_attr("current", attr, page_size));
+ ASSERT_EQ(0, strcmp((char *)tctx->ctx, attr));
+ for (i = 1; i < count; i++) {
+ tctx = next_ctx(tctx);
+ ASSERT_NE(0, strcmp((char *)tctx->ctx, attr));
+ }
+ }
+ if (cnt_exec) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_EXEC);
+ ASSERT_GE(cnt_exec, count);
+ if (count > 0) {
+ tctx = ctx;
+ ASSERT_EQ(0, read_proc_attr("exec", attr, page_size));
+ ASSERT_EQ(0, strcmp((char *)tctx->ctx, attr));
+ }
+ for (i = 1; i < count; i++) {
+ tctx = next_ctx(tctx);
+ ASSERT_NE(0, strcmp((char *)tctx->ctx, attr));
+ }
+ }
+ if (cnt_fscreate) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_FSCREATE);
+ ASSERT_GE(cnt_fscreate, count);
+ if (count > 0) {
+ tctx = ctx;
+ ASSERT_EQ(0, read_proc_attr("fscreate", attr,
+ page_size));
+ ASSERT_EQ(0, strcmp((char *)tctx->ctx, attr));
+ }
+ for (i = 1; i < count; i++) {
+ tctx = next_ctx(tctx);
+ ASSERT_NE(0, strcmp((char *)tctx->ctx, attr));
+ }
+ }
+ if (cnt_keycreate) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_KEYCREATE);
+ ASSERT_GE(cnt_keycreate, count);
+ if (count > 0) {
+ tctx = ctx;
+ ASSERT_EQ(0, read_proc_attr("keycreate", attr,
+ page_size));
+ ASSERT_EQ(0, strcmp((char *)tctx->ctx, attr));
+ }
+ for (i = 1; i < count; i++) {
+ tctx = next_ctx(tctx);
+ ASSERT_NE(0, strcmp((char *)tctx->ctx, attr));
+ }
+ }
+ if (cnt_prev) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_PREV);
+ ASSERT_GE(cnt_prev, count);
+ if (count > 0) {
+ tctx = ctx;
+ ASSERT_EQ(0, read_proc_attr("prev", attr, page_size));
+ ASSERT_EQ(0, strcmp((char *)tctx->ctx, attr));
+ for (i = 1; i < count; i++) {
+ tctx = next_ctx(tctx);
+ ASSERT_NE(0, strcmp((char *)tctx->ctx, attr));
+ }
+ }
+ }
+ if (cnt_sockcreate) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_SOCKCREATE);
+ ASSERT_GE(cnt_sockcreate, count);
+ if (count > 0) {
+ tctx = ctx;
+ ASSERT_EQ(0, read_proc_attr("sockcreate", attr,
+ page_size));
+ ASSERT_EQ(0, strcmp((char *)tctx->ctx, attr));
+ }
+ for (i = 1; i < count; i++) {
+ tctx = next_ctx(tctx);
+ ASSERT_NE(0, strcmp((char *)tctx->ctx, attr));
+ }
+ }
+
+ free(ctx);
+ free(attr);
+ free(syscall_lsms);
+}
+
+TEST_HARNESS_MAIN
diff --git a/tools/testing/selftests/lsm/lsm_module_list_test.c b/tools/testing/selftests/lsm/lsm_module_list_test.c
new file mode 100644
index 000000000000..c5675598b2a4
--- /dev/null
+++ b/tools/testing/selftests/lsm/lsm_module_list_test.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Linux Security Module infrastructure tests
+ * Tests for the lsm_module_list system call
+ *
+ * Copyright © 2022 Casey Schaufler <casey at schaufler-ca.com>
+ * Copyright © 2022 Intel Corporation
+ */
+
+#define _GNU_SOURCE
+#include <linux/lsm.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include "../kselftest_harness.h"
+
+static int read_sysfs_lsms(char *lsms, __kernel_size_t size)
+{
+ FILE *fp;
+
+ fp = fopen("/sys/kernel/security/lsm", "r");
+ if (fp == NULL)
+ return -1;
+ if (fread(lsms, 1, size, fp) <= 0)
+ return -1;
+ fclose(fp);
+ return 0;
+}
+
+TEST(size_null_lsm_module_list)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *syscall_lsms = calloc(page_size, 1);
+
+ ASSERT_NE(NULL, syscall_lsms);
+ ASSERT_EQ(-1, syscall(__NR_lsm_module_list, syscall_lsms, NULL, 0));
+ ASSERT_EQ(EFAULT, errno);
+
+ free(syscall_lsms);
+}
+
+TEST(ids_null_lsm_module_list)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ __kernel_size_t size = page_size;
+
+ ASSERT_EQ(-1, syscall(__NR_lsm_module_list, NULL, &size, 0));
+ ASSERT_EQ(EFAULT, errno);
+ ASSERT_NE(1, size);
+}
+
+TEST(size_too_small_lsm_module_list)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *syscall_lsms = calloc(page_size, 1);
+ __kernel_size_t size = 1;
+
+ ASSERT_NE(NULL, syscall_lsms);
+ ASSERT_EQ(-1, syscall(__NR_lsm_module_list, syscall_lsms, &size, 0));
+ ASSERT_EQ(E2BIG, errno);
+ ASSERT_NE(1, size);
+
+ free(syscall_lsms);
+}
+
+TEST(flags_set_lsm_module_list)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *syscall_lsms = calloc(page_size, 1);
+ __kernel_size_t size = page_size;
+
+ ASSERT_NE(NULL, syscall_lsms);
+ ASSERT_EQ(-1, syscall(__NR_lsm_module_list, syscall_lsms, &size, 7));
+ ASSERT_EQ(EINVAL, errno);
+ ASSERT_EQ(page_size, size);
+
+ free(syscall_lsms);
+}
+
+TEST(correct_lsm_module_list)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ __kernel_size_t size = page_size;
+ __u32 *syscall_lsms = calloc(page_size, 1);
+ char *sysfs_lsms = calloc(page_size, 1);
+ char *name;
+ char *cp;
+ int count;
+ int i;
+
+ ASSERT_NE(NULL, sysfs_lsms);
+ ASSERT_NE(NULL, syscall_lsms);
+ ASSERT_EQ(0, read_sysfs_lsms(sysfs_lsms, page_size));
+
+ count = syscall(__NR_lsm_module_list, syscall_lsms, &size, 0);
+ ASSERT_LE(1, count);
+ cp = sysfs_lsms;
+ for (i = 0; i < count; i++) {
+ switch (syscall_lsms[i]) {
+ case LSM_ID_CAPABILITY:
+ name = "capability";
+ break;
+ case LSM_ID_SELINUX:
+ name = "selinux";
+ break;
+ case LSM_ID_SMACK:
+ name = "smack";
+ break;
+ case LSM_ID_TOMOYO:
+ name = "tomoyo";
+ break;
+ case LSM_ID_IMA:
+ name = "ima";
+ break;
+ case LSM_ID_APPARMOR:
+ name = "apparmor";
+ break;
+ case LSM_ID_YAMA:
+ name = "yama";
+ break;
+ case LSM_ID_LOADPIN:
+ name = "loadpin";
+ break;
+ case LSM_ID_SAFESETID:
+ name = "safesetid";
+ break;
+ case LSM_ID_LOCKDOWN:
+ name = "lockdown";
+ break;
+ case LSM_ID_BPF:
+ name = "bpf";
+ break;
+ case LSM_ID_LANDLOCK:
+ name = "landlock";
+ break;
+ default:
+ name = "INVALID";
+ break;
+ }
+ ASSERT_EQ(0, strncmp(cp, name, strlen(name)));
+ cp += strlen(name) + 1;
+ }
+
+ free(sysfs_lsms);
+ free(syscall_lsms);
+}
+
+TEST_HARNESS_MAIN
diff --git a/tools/testing/selftests/lsm/lsm_set_self_attr_test.c b/tools/testing/selftests/lsm/lsm_set_self_attr_test.c
new file mode 100644
index 000000000000..86f8a5952471
--- /dev/null
+++ b/tools/testing/selftests/lsm/lsm_set_self_attr_test.c
@@ -0,0 +1,328 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Linux Security Module infrastructure tests
+ * Tests for the lsm_set_self_attr system call
+ *
+ * Copyright © 2022 Casey Schaufler <casey at schaufler-ca.com>
+ * Copyright © 2022 Intel Corporation
+ */
+
+#define _GNU_SOURCE
+#include <linux/lsm.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include "../kselftest_harness.h"
+
+static struct lsm_ctx *next_ctx(struct lsm_ctx *tctx)
+{
+ void *vp;
+
+ vp = (void *)tctx + sizeof(*tctx) + tctx->ctx_len;
+ return (struct lsm_ctx *)vp;
+}
+
+TEST(ctx_null_lsm_set_self_attr)
+{
+ ASSERT_EQ(-1, syscall(__NR_lsm_set_self_attr, NULL, _SC_PAGESIZE,
+ LSM_ATTR_CURRENT));
+ ASSERT_EQ(EFAULT, errno);
+}
+
+TEST(size_too_small_lsm_set_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ struct lsm_ctx *ctx = calloc(page_size, 1);
+ __kernel_size_t size = page_size;
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_GE(1, syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_CURRENT));
+ ASSERT_EQ(-1, syscall(__NR_lsm_set_self_attr, ctx, 1,
+ LSM_ATTR_CURRENT));
+ ASSERT_EQ(EINVAL, errno);
+
+ free(ctx);
+}
+
+TEST(flags_zero_lsm_set_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *ctx = calloc(page_size, 1);
+ __kernel_size_t size = page_size;
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_GE(1, syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_CURRENT));
+ ASSERT_EQ(-1, syscall(__NR_lsm_set_self_attr, ctx, size, 0));
+ ASSERT_EQ(EINVAL, errno);
+
+ free(ctx);
+}
+
+TEST(flags_overset_lsm_set_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ char *ctx = calloc(page_size, 1);
+ __kernel_size_t size = page_size;
+ struct lsm_ctx *tctx = (struct lsm_ctx *)ctx;
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_GE(1, syscall(__NR_lsm_get_self_attr, tctx, &size,
+ LSM_ATTR_CURRENT));
+ ASSERT_EQ(-1, syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_CURRENT | LSM_ATTR_PREV));
+ ASSERT_EQ(EINVAL, errno);
+
+ free(ctx);
+}
+
+TEST(basic_lsm_set_self_attr)
+{
+ const long page_size = sysconf(_SC_PAGESIZE);
+ __kernel_size_t size = page_size;
+ struct lsm_ctx *ctx = calloc(page_size, 1);
+ struct lsm_ctx *tctx;
+ __u32 *syscall_lsms = calloc(page_size, 1);
+ char *attr = calloc(page_size, 1);
+ bool active_apparmor = false;
+ bool active_selinux = false;
+ bool active_smack = false;
+ int cnt_current = 0;
+ int cnt_exec = 0;
+ int cnt_fscreate = 0;
+ int cnt_keycreate = 0;
+ int cnt_prev = 0;
+ int cnt_sockcreate = 0;
+ int lsmcount;
+ int count;
+ int rc;
+ int i;
+
+ ASSERT_NE(NULL, ctx);
+ ASSERT_NE(NULL, syscall_lsms);
+
+ lsmcount = syscall(__NR_lsm_module_list, syscall_lsms, &size, 0);
+ ASSERT_LE(1, lsmcount);
+
+ for (i = 0; i < lsmcount; i++) {
+ switch (syscall_lsms[i]) {
+ case LSM_ID_SELINUX:
+ active_selinux = true;
+ cnt_current++;
+ cnt_exec++;
+ cnt_fscreate++;
+ cnt_keycreate++;
+ cnt_prev++;
+ cnt_sockcreate++;
+ break;
+ case LSM_ID_SMACK:
+ active_smack = true;
+ cnt_current++;
+ break;
+ case LSM_ID_APPARMOR:
+ active_apparmor = true;
+ cnt_current++;
+ cnt_exec++;
+ cnt_prev++;
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (cnt_current) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_CURRENT);
+ ASSERT_EQ(cnt_current, count);
+ tctx = ctx;
+
+ for (i = 0; i < count; i++) {
+ switch (tctx->id) {
+ case LSM_ID_SELINUX:
+ ASSERT_EQ(active_selinux, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_CURRENT);
+ ASSERT_EQ(0, rc);
+ tctx->ctx[0] = 'X';
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_CURRENT);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ break;
+ case LSM_ID_SMACK:
+ ASSERT_EQ(active_smack, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_CURRENT);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EPERM, errno);
+ break;
+ case LSM_ID_APPARMOR:
+ ASSERT_EQ(active_apparmor, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_CURRENT);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ break;
+ default:
+ }
+ tctx = next_ctx(tctx);
+ }
+ }
+ if (cnt_exec) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_EXEC);
+ ASSERT_GE(cnt_exec, count);
+ tctx = ctx;
+
+ for (i = 0; i < count; i++) {
+ switch (tctx->id) {
+ case LSM_ID_SELINUX:
+ ASSERT_EQ(active_selinux, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_EXEC);
+ ASSERT_EQ(0, rc);
+ tctx->ctx[0] = 'X';
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_EXEC);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ break;
+ case LSM_ID_APPARMOR:
+ ASSERT_EQ(active_apparmor, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_EXEC);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EPERM, errno);
+ break;
+ default:
+ break;
+ }
+ tctx = next_ctx(tctx);
+ }
+ }
+ if (cnt_prev) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_PREV);
+ ASSERT_GE(cnt_prev, count);
+ tctx = ctx;
+
+ for (i = 0; i < count; i++) {
+ switch (tctx->id) {
+ case LSM_ID_SELINUX:
+ ASSERT_EQ(active_selinux, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_PREV);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ tctx->ctx[0] = 'X';
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_PREV);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ break;
+ case LSM_ID_APPARMOR:
+ ASSERT_EQ(active_apparmor, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_PREV);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EPERM, errno);
+ break;
+ default:
+ break;
+ }
+ tctx = next_ctx(tctx);
+ }
+ }
+ if (cnt_fscreate) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_FSCREATE);
+ ASSERT_GE(cnt_fscreate, count);
+ tctx = ctx;
+
+ for (i = 0; i < count; i++) {
+ switch (tctx->id) {
+ case LSM_ID_SELINUX:
+ ASSERT_EQ(active_selinux, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_FSCREATE);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ tctx->ctx[0] = 'X';
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_FSCREATE);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ break;
+ default:
+ break;
+ }
+ tctx = next_ctx(tctx);
+ }
+ }
+ if (cnt_keycreate) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_KEYCREATE);
+ ASSERT_GE(cnt_keycreate, count);
+ tctx = ctx;
+
+ for (i = 0; i < count; i++) {
+ switch (tctx->id) {
+ case LSM_ID_SELINUX:
+ ASSERT_EQ(active_selinux, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_KEYCREATE);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ tctx->ctx[0] = 'X';
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_KEYCREATE);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ break;
+ default:
+ break;
+ }
+ tctx = next_ctx(tctx);
+ }
+ }
+ if (cnt_sockcreate) {
+ size = page_size;
+ count = syscall(__NR_lsm_get_self_attr, ctx, &size,
+ LSM_ATTR_SOCKCREATE);
+ ASSERT_GE(cnt_sockcreate, count);
+ tctx = ctx;
+
+ for (i = 0; i < count; i++) {
+ switch (tctx->id) {
+ case LSM_ID_SELINUX:
+ ASSERT_EQ(active_selinux, true);
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_SOCKCREATE);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ tctx->ctx[0] = 'X';
+ rc = syscall(__NR_lsm_set_self_attr, tctx, size,
+ LSM_ATTR_SOCKCREATE);
+ ASSERT_EQ(-1, rc);
+ ASSERT_EQ(EINVAL, errno);
+ break;
+ default:
+ break;
+ }
+ tctx = next_ctx(tctx);
+ }
+ }
+
+ free(ctx);
+ free(attr);
+ free(syscall_lsms);
+}
+
+TEST_HARNESS_MAIN
--
2.38.1
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