[PATCH v13 11/11] LSM: selftests for Linux Security Module syscalls

[Mickaël Salaün]

These tests look good!

I suggested other tests to add in my previous emails.

I'd suggest to re-run clang-format -i on them though.

On Wed, Aug 02, 2023 at 10:44:34AM -0700, Casey Schaufler wrote:
> 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 at schaufler-ca.com>
> ---
>  MAINTAINERS                                   |   1 +
>  tools/testing/selftests/Makefile              |   1 +
>  tools/testing/selftests/lsm/Makefile          |  19 ++
>  tools/testing/selftests/lsm/common.c          |  81 ++++++
>  tools/testing/selftests/lsm/common.h          |  33 +++
>  tools/testing/selftests/lsm/config            |   3 +
>  .../selftests/lsm/lsm_get_self_attr_test.c    | 240 ++++++++++++++++++
>  .../selftests/lsm/lsm_list_modules_test.c     | 140 ++++++++++
>  .../selftests/lsm/lsm_set_self_attr_test.c    |  74 ++++++
>  9 files changed, 592 insertions(+)
>  create mode 100644 tools/testing/selftests/lsm/Makefile
>  create mode 100644 tools/testing/selftests/lsm/common.c
>  create mode 100644 tools/testing/selftests/lsm/common.h
>  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_list_modules_test.c
>  create mode 100644 tools/testing/selftests/lsm/lsm_set_self_attr_test.c
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index aca4db11dd02..c96f1c388d22 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -19158,6 +19158,7 @@ W:	http://kernsec.org/
>  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm.git
>  F:	include/uapi/linux/lsm.h
>  F:	security/
> +F:	tools/testing/selftests/lsm/
>  X:	security/selinux/
>  
>  SELINUX SECURITY MODULE
> diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
> index 666b56f22a41..bde7c217b23f 100644
> --- a/tools/testing/selftests/Makefile
> +++ b/tools/testing/selftests/Makefile
> @@ -39,6 +39,7 @@ 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..bae6c1e3bba4
> --- /dev/null
> +++ b/tools/testing/selftests/lsm/Makefile
> @@ -0,0 +1,19 @@
> +# SPDX-License-Identifier: GPL-2.0
> +#
> +# First run: make -C ../../../.. headers_install
> +
> +CFLAGS += -Wall -O2 $(KHDR_INCLUDES)
> +LOCAL_HDRS += common.h
> +
> +TEST_GEN_PROGS := lsm_get_self_attr_test lsm_list_modules_test \
> +		  lsm_set_self_attr_test
> +
> +include ../lib.mk
> +
> +$(TEST_GEN_PROGS):

This target can be removed.

> +
> +$(OUTPUT)/lsm_get_self_attr_test: lsm_get_self_attr_test.c common.c
> +$(OUTPUT)/lsm_set_self_attr_test: lsm_set_self_attr_test.c common.c
> +$(OUTPUT)/lsm_list_modules_test: lsm_list_modules_test.c common.c
> +
> +EXTRA_CLEAN = $(OUTPUT)/common.o