linux-kernel - Re: [PATCH v4 17/23] security: Introduce inode_post_remove

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Date:   Mon, 06 Nov 2023 11:34:03 -0500
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     Roberto Sassu <roberto.sassu@...weicloud.com>,
        viro@...iv.linux.org.uk, brauner@...nel.org,
        chuck.lever@...cle.com, jlayton@...nel.org, neilb@...e.de,
        kolga@...app.com, Dai.Ngo@...cle.com, tom@...pey.com,
        paul@...l-moore.com, jmorris@...ei.org, serge@...lyn.com,
        dmitry.kasatkin@...il.com, dhowells@...hat.com, jarkko@...nel.org,
        stephen.smalley.work@...il.com, eparis@...isplace.org,
        casey@...aufler-ca.com, mic@...ikod.net
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nfs@...r.kernel.org, linux-security-module@...r.kernel.org,
        linux-integrity@...r.kernel.org, keyrings@...r.kernel.org,
        selinux@...r.kernel.org, Roberto Sassu <roberto.sassu@...wei.com>,
        Stefan Berger <stefanb@...ux.ibm.com>
Subject: Re: [PATCH v4 17/23] security: Introduce inode_post_remove_acl hook

On Fri, 2023-10-27 at 10:35 +0200, Roberto Sassu wrote:
> diff --git a/security/security.c b/security/security.c
> index 622c24cbfbb6..6ca8fdd1f037 100644
> --- a/security/security.c
> +++ b/security/security.c
> @@ -2406,6 +2406,23 @@ int security_inode_remove_acl(struct mnt_idmap *idmap,
>         return evm_inode_remove_acl(idmap, dentry, acl_name);
>  }
>  
> +/**
> + * security_inode_post_remove_acl() - Update inode sec after remove_acl op

"remove_acl op" doesn't add any additional information.   Both here and
in "security: Introduce inode_post_set_acl hook" the comment should be
the same. 

> + * @idmap: idmap of the mount
> + * @dentry: file
> + * @acl_name: acl name
> + *
> + * Update inode security field after successful remove_acl operation on @dentry
> + * in @idmap. The posix acls are identified by @acl_name.
> + */
> +void security_inode_post_remove_acl(struct mnt_idmap *idmap,
> +                                   struct dentry *dentry, const char *acl_name)
> +{
> +       if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
> +               return;
> +       call_void_hook(inode_post_remove_acl, idmap, dentry, acl_name);
> +}
> +
>  /**
>   * security_inode_post_setxattr() - Update the inode after a setxattr operation
>   * @dentry: file

-- 
thanks,

Mimi