linux-kernel - Re: [PATCH 77/79] security: switch to new ctime accessors

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Date:   Fri, 23 Jun 2023 10:15:34 -0400
From:   Paul Moore <paul@...l-moore.com>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     Christian Brauner <brauner@...nel.org>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Al Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>,
        linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 77/79] security: switch to new ctime accessors

On Wed, Jun 21, 2023 at 10:49 AM Jeff Layton <jlayton@...nel.org> wrote:
>
> In later patches, we're going to change how the ctime.tv_nsec field is
> utilized. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
>
> Signed-off-by: Jeff Layton <jlayton@...nel.org>
> ---
>  security/inode.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/security/inode.c b/security/inode.c
> index 6c326939750d..086280390793 100644
> --- a/security/inode.c
> +++ b/security/inode.c
> @@ -145,7 +145,7 @@ static struct dentry *securityfs_create_dentry(const char *name, umode_t mode,
>
>         inode->i_ino = get_next_ino();
>         inode->i_mode = mode;
> -       inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
> +       inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);

In the process of looking at inode_ctime_set_current() I ran into the
same bug others noticed regarding inode_set_ctime()/inode_ctime_set();
assuming that gets fixed this looks fine to me.

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

>         inode->i_private = data;
>         if (S_ISDIR(mode)) {
>                 inode->i_op = &simple_dir_inode_operations;
> --
> 2.41.0

-- 
paul-moore.com