Re: [PATCH v3 01/13] LSM: Add the lsm_prop data structure.

[Konstantin Andreev]

Casey Schaufler, 10 Sep 2024:
> ...
> The lsm_prop structure definition is intended to keep the LSM
> specific information private to the individual security modules.
> ...
> index 1390f1efb4f0..1027c802cc8c 100644
> --- a/include/linux/security.h
> +++ b/include/linux/security.h
> @@ -140,6 +144,22 @@ enum lockdown_reason {
> +
> +/*
> + * Data exported by the security modules
> + */
> +struct lsm_prop {
> +	struct lsm_prop_selinux selinux;
> +	struct lsm_prop_smack smack;
> +	struct lsm_prop_apparmor apparmor;
> +	struct lsm_prop_bpf bpf;
> +	struct lsm_prop_scaffold scaffold;
> +};

This design prevents compiling and loading out-of-tree 3rd party LSM, am I right?

Out-of-tree LSM's were discussed recently at

https://lore.kernel.org/linux-security-module/efb8f264-f80e-43b2-8ea3-fcc9789520ec@xxxxxxxxxxxxxxxxxxx/T/
https://lore.kernel.org/linux-security-module/960e740f-e5d9-409b-bb2a-8bdceffaae95@xxxxxxxxxxxxxxxxxxx/T/

but it looks like a final decision to ban them is not taken yet.
--
Konstantin Andreev