[RFC 1/4] landlock: Increment Landlock ABI version to 4

[Mickaël Salaün]

We should increment the version with the (next) commit that enables the 
feature. This helps avoid a backport with a wrong version.


On 02/05/2023 19:17, Günther Noack wrote:
> Increment the Landlock ABI version in preparation for the ioctl
> feature.
> 
> Signed-off-by: Günther Noack <gnoack3000 at gmail.com>
> ---
>   security/landlock/syscalls.c                 | 2 +-
>   tools/testing/selftests/landlock/base_test.c | 2 +-
>   2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/security/landlock/syscalls.c b/security/landlock/syscalls.c
> index 245cc650a4d..c70fc9e6fe9 100644
> --- a/security/landlock/syscalls.c
> +++ b/security/landlock/syscalls.c
> @@ -129,7 +129,7 @@ static const struct file_operations ruleset_fops = {
>   	.write = fop_dummy_write,
>   };
>   
> -#define LANDLOCK_ABI_VERSION 3
> +#define LANDLOCK_ABI_VERSION 4
>   
>   /**
>    * sys_landlock_create_ruleset - Create a new ruleset
> diff --git a/tools/testing/selftests/landlock/base_test.c b/tools/testing/selftests/landlock/base_test.c
> index 792c3f0a59b..646f778dfb1 100644
> --- a/tools/testing/selftests/landlock/base_test.c
> +++ b/tools/testing/selftests/landlock/base_test.c
> @@ -75,7 +75,7 @@ TEST(abi_version)
>   	const struct landlock_ruleset_attr ruleset_attr = {
>   		.handled_access_fs = LANDLOCK_ACCESS_FS_READ_FILE,
>   	};
> -	ASSERT_EQ(3, landlock_create_ruleset(NULL, 0,
> +	ASSERT_EQ(4, landlock_create_ruleset(NULL, 0,
>   					     LANDLOCK_CREATE_RULESET_VERSION));
>   
>   	ASSERT_EQ(-1, landlock_create_ruleset(&ruleset_attr, 0,