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These tests were missing to check the check_access_path() call with all
combinations of maybe_remove(old_dentry) and maybe_remove(new_dentry).
Extend layout1.link with a new complementary test and check that
REMOVE_FILE is not required to link a file.
Cc: Shuah Khan <shuah@kernel.org>
Link: https://lore.kernel.org/r/20220506160820.524344-7-mic@digikod.net
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Make sure that all filesystem access rights can be tied to directories.
Rename layout1.file_access_rights to layout1.file_and_dir_access_rights
to reflect this change.
Cc: Shuah Khan <shuah@kernel.org>
Link: https://lore.kernel.org/r/20220506160820.524344-6-mic@digikod.net
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Replace SYS_<syscall> with __NR_<syscall>. Using the __NR_<syscall>
notation, provided by UAPI, is useful to build tests on systems without
the SYS_<syscall> definitions.
Replace SYS_pivot_root with __NR_pivot_root, and SYS_move_mount with
__NR_move_mount.
Define renameat2() and RENAME_EXCHANGE if they are unknown to old build
systems.
Cc: Shuah Khan <shuah@kernel.org>
Link: https://lore.kernel.org/r/20220506160820.524344-3-mic@digikod.net
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Add a comma after each array value to make clang-format keep the
current array formatting. See the following commit.
Automatically modified with:
sed -i 's/\t\({}\|NULL\)$/\0,/' tools/testing/selftests/landlock/fs_test.c
Link: https://lore.kernel.org/r/20220506160513.523257-5-mic@digikod.net
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
In preparation to a following commit, add clang-format on and
clang-format off stanzas around constant definitions and the TEST_F_FORK
macro. This enables to keep aligned values, which is much more readable
than packed definitions.
Add other clang-format exceptions for FIXTURE() and
FIXTURE_VARIANT_ADD() declarations to force space before open brace,
which is reported by checkpatch.pl .
Link: https://lore.kernel.org/r/20220506160513.523257-4-mic@digikod.net
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Test all Landlock system calls, ptrace hooks semantic and filesystem
access-control with multiple layouts.
Test coverage for security/landlock/ is 93.6% of lines. The code not
covered only deals with internal kernel errors (e.g. memory allocation)
and race conditions.
Cc: James Morris <jmorris@namei.org>
Cc: Jann Horn <jannh@google.com>
Cc: Serge E. Hallyn <serge@hallyn.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com>
Reviewed-by: Vincent Dagonneau <vincent.dagonneau@ssi.gouv.fr>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210422154123.13086-11-mic@digikod.net
Signed-off-by: James Morris <jamorris@linux.microsoft.com>
