linux-hardening - Re: [PATCH v2 68/92] pstore: convert to ctime accessor functions

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Date:   Thu, 6 Jul 2023 16:00:20 +0200
From:   Jan Kara <jack@...e.cz>
To:     Jeff Layton <jlayton@...nel.org>
Cc:     Christian Brauner <brauner@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Tony Luck <tony.luck@...el.com>,
        "Guilherme G. Piccoli" <gpiccoli@...lia.com>,
        Al Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2 68/92] pstore: convert to ctime accessor functions

On Wed 05-07-23 15:01:33, Jeff Layton wrote:
> In later patches, we're going to change how the inode's ctime field is
> used. Switch to using accessor functions instead of raw accesses of
> inode->i_ctime.
> 
> Acked-by: Kees Cook <keescook@...omium.org>
> Signed-off-by: Jeff Layton <jlayton@...nel.org>

Looks good to me. Feel free to add:

Reviewed-by: Jan Kara <jack@...e.cz>

								Honza

> ---
>  fs/pstore/inode.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
> index ffbadb8b3032..a756af980d0c 100644
> --- a/fs/pstore/inode.c
> +++ b/fs/pstore/inode.c
> @@ -223,7 +223,7 @@ static struct inode *pstore_get_inode(struct super_block *sb)
>  	struct inode *inode = new_inode(sb);
>  	if (inode) {
>  		inode->i_ino = get_next_ino();
> -		inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
> +		inode->i_atime = inode->i_mtime = inode_set_ctime_current(inode);
>  	}
>  	return inode;
>  }
> @@ -390,7 +390,7 @@ int pstore_mkfile(struct dentry *root, struct pstore_record *record)
>  	inode->i_private = private;
>  
>  	if (record->time.tv_sec)
> -		inode->i_mtime = inode->i_ctime = record->time;
> +		inode->i_mtime = inode_set_ctime_to_ts(inode, record->time);
>  
>  	d_add(dentry, inode);
>  
> -- 
> 2.41.0
> 
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR