diff options
| author | Kees Cook <keescook@chromium.org> | 2023-08-17 14:03:01 -0700 |
|---|---|---|
| committer | Mickaël Salaün <mic@digikod.net> | 2023-08-18 11:44:42 +0200 |
| commit | 246c713a3655c840337c4b24d3838558673c0d6b (patch) | |
| tree | 86263e8a121047685a2e585f92932deb749bfa53 /security | |
| parent | 2ccdd1b13c591d306f0401d98dedc4bdcd02b421 (diff) | |
landlock: Annotate struct landlock_rule with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct landlock_rule.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Paul Moore <paul@paul-moore.com>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: linux-security-module@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230817210257.never.920-kees@kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Diffstat (limited to 'security')
| -rw-r--r-- | security/landlock/ruleset.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/security/landlock/ruleset.h b/security/landlock/ruleset.h index d43231b783e4..55b1df8f66a8 100644 --- a/security/landlock/ruleset.h +++ b/security/landlock/ruleset.h @@ -67,7 +67,7 @@ struct landlock_rule { * @layers: Stack of layers, from the latest to the newest, implemented * as a flexible array member (FAM). */ - struct landlock_layer layers[]; + struct landlock_layer layers[] __counted_by(num_layers); }; /** |