Re: [PATCH 19/21] linux: Enable Landlock support

[Michael Tremer <michael.tremer@ipfire.org>]

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I believe that nothing will use this, yet, so it should not break anything turning it on:

Acked-by: Michael Tremer <michael.tremer(a)ipfire.org>

> On 26 Dec 2022, at 20:30, Peter Müller <peter.mueller(a)ipfire.org> wrote:
> 
> From the kernel's documentation:
> 
>> Landlock is a sandboxing mechanism that enables processes to restrict
>> themselves (and their future children) by gradually enforcing
>> tailored access control policies. A Landlock security policy is a
>> set of access rights (e.g. open a file in read-only, make a
>> directory, etc.) tied to a file hierarchy. Such policy can be
>> configured and enforced by any processes for themselves using the
>> dedicated system calls: landlock_create_ruleset(),
>> landlock_add_rule(), and landlock_restrict_self().
> 
> There is no harm in enabling this security feature, so applications
> supporting Landlock can benefit from it.
> 
> Rolled forward from https://patchwork.ipfire.org/project/ipfire/patch/d7ac0caf-5a7c-bcca-6293-16c773523942(a)ipfire.org/
> to submit all kernel-related changes as a single patchset.
> 
> Reviewed-by: Michael Tremer <michael.tremer(a)ipfire.org>
> Signed-off-by: Peter Müller <peter.mueller(a)ipfire.org>
> ---
> config/kernel/kernel.config.x86_64-ipfire | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/config/kernel/kernel.config.x86_64-ipfire b/config/kernel/kernel.config.x86_64-ipfire
> index 3d9e01e38..3bdbf3476 100644
> --- a/config/kernel/kernel.config.x86_64-ipfire
> +++ b/config/kernel/kernel.config.x86_64-ipfire
> @@ -6874,7 +6874,7 @@ CONFIG_SECURITY_DMESG_RESTRICT=y
> CONFIG_SECURITY=y
> CONFIG_SECURITYFS=y
> # CONFIG_SECURITY_NETWORK is not set
> -# CONFIG_SECURITY_PATH is not set
> +CONFIG_SECURITY_PATH=y
> # CONFIG_INTEL_TXT is not set
> CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y
> CONFIG_HARDENED_USERCOPY=y
> @@ -6893,7 +6893,7 @@ CONFIG_SECURITY_LOCKDOWN_LSM_EARLY=y
> CONFIG_LOCK_DOWN_KERNEL_FORCE_NONE=y
> # CONFIG_LOCK_DOWN_KERNEL_FORCE_INTEGRITY is not set
> # CONFIG_LOCK_DOWN_KERNEL_FORCE_CONFIDENTIALITY is not set
> -# CONFIG_SECURITY_LANDLOCK is not set
> +CONFIG_SECURITY_LANDLOCK=y
> CONFIG_INTEGRITY=y
> # CONFIG_INTEGRITY_SIGNATURE is not set
> # CONFIG_IMA is not set
> -- 
> 2.35.3