On Jan 15, 2024 Roberto Sassu <[email protected]> wrote:
> 
> In preparation for moving IMA and EVM to the LSM infrastructure, introduce
> the path_post_mknod hook.
> 
> IMA-appraisal requires all existing files in policy to have a file
> hash/signature stored in security.ima. An exception is made for empty files
> created by mknod, by tagging them as new files.
> 
> LSMs could also take some action after files are created.
> 
> The new hook cannot return an error and cannot cause the operation to be
> reverted.
> 
> Signed-off-by: Roberto Sassu <[email protected]>
> Acked-by: Casey Schaufler <[email protected]>
> Reviewed-by: Mimi Zohar <[email protected]>
> ---
>  fs/namei.c                    |  5 +++++
>  include/linux/lsm_hook_defs.h |  2 ++
>  include/linux/security.h      |  5 +++++
>  security/security.c           | 14 ++++++++++++++
>  4 files changed, 26 insertions(+)

Acked-by: Paul Moore <[email protected]>

--
paul-moore.com

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