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SubjectRe: [PATCH v9 15/25] security: Introduce inode_post_create_tmpfile hook
On Jan 15, 2024 Roberto Sassu <roberto.sassu@huaweicloud.com> wrote:
>
> In preparation for moving IMA and EVM to the LSM infrastructure, introduce
> the inode_post_create_tmpfile hook.
>
> As temp files can be made persistent, treat new temp files like other new
> files, so that the file hash is calculated and stored in the security
> xattr.
>
> LSMs could also take some action after temp files have been created.
>
> The new hook cannot return an error and cannot cause the operation to be
> canceled.
>
> Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
> Acked-by: Casey Schaufler <casey@schaufler-ca.com>
> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
> ---
> fs/namei.c | 1 +
> include/linux/lsm_hook_defs.h | 2 ++
> include/linux/security.h | 6 ++++++
> security/security.c | 15 +++++++++++++++
> 4 files changed, 24 insertions(+)

Acked-by: Paul Moore <paul@paul-moore.com>

--
paul-moore.com

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