Re: [PATCH v9 10/25] security: Introduce inode_post_setattr hook

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Jan 15, 2024 Roberto Sassu <roberto.sassu@xxxxxxxxxxxxxxx> wrote:
> 
> In preparation for moving IMA and EVM to the LSM infrastructure, introduce
> the inode_post_setattr hook.
> 
> At inode_setattr hook, EVM verifies the file's existing HMAC value. At
> inode_post_setattr, EVM re-calculates the file's HMAC based on the modified
> file attributes and other file metadata.
> 
> Other LSMs could similarly take some action after successful file attribute
> change.
> 
> The new hook cannot return an error and cannot cause the operation to be
> reverted.
> 
> Signed-off-by: Roberto Sassu <roberto.sassu@xxxxxxxxxx>
> Reviewed-by: Stefan Berger <stefanb@xxxxxxxxxxxxx>
> Reviewed-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>
> Acked-by: Casey Schaufler <casey@xxxxxxxxxxxxxxxx>
> ---
>  fs/attr.c                     |  1 +
>  include/linux/lsm_hook_defs.h |  2 ++
>  include/linux/security.h      |  7 +++++++
>  security/security.c           | 16 ++++++++++++++++
>  4 files changed, 26 insertions(+)

Acked-by: Paul Moore <paul@xxxxxxxxxxxxxx>

--
paul-moore.com




[Index of Archives]     [Linux Filesystem Development]     [Linux USB Development]     [Linux Media Development]     [Video for Linux]     [Linux NILFS]     [Linux Audio Users]     [Yosemite Info]     [Linux SCSI]

  Powered by Linux