linux-kernel - Re: [PATCH 26/29] xfs: move xfs_xattr

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Message-ID: <20231001161850.GB21298@frogsfrogsfrogs>
Date:   Sun, 1 Oct 2023 09:18:50 -0700
From:   "Darrick J. Wong" <djwong@...nel.org>
To:     Wedson Almeida Filho <wedsonaf@...il.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Wedson Almeida Filho <walmeida@...rosoft.com>,
        linux-xfs@...r.kernel.org
Subject: Re: [PATCH 26/29] xfs: move xfs_xattr_handlers to .rodata

On Sat, Sep 30, 2023 at 02:00:30AM -0300, Wedson Almeida Filho wrote:
> From: Wedson Almeida Filho <walmeida@...rosoft.com>
> 
> This makes it harder for accidental or malicious changes to
> xfs_xattr_handlers at runtime.
> 
> Cc: "Darrick J. Wong" <djwong@...nel.org>
> Cc: linux-xfs@...r.kernel.org
> Signed-off-by: Wedson Almeida Filho <walmeida@...rosoft.com>

Reviewed-by: Darrick J. Wong <djwong@...nel.org>

--D

> ---
>  fs/xfs/xfs_xattr.c | 2 +-
>  fs/xfs/xfs_xattr.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
> index 43e5c219aaed..77418bcd6f3a 100644
> --- a/fs/xfs/xfs_xattr.c
> +++ b/fs/xfs/xfs_xattr.c
> @@ -175,7 +175,7 @@ static const struct xattr_handler xfs_xattr_security_handler = {
>  	.set	= xfs_xattr_set,
>  };
>  
> -const struct xattr_handler *xfs_xattr_handlers[] = {
> +const struct xattr_handler * const xfs_xattr_handlers[] = {
>  	&xfs_xattr_user_handler,
>  	&xfs_xattr_trusted_handler,
>  	&xfs_xattr_security_handler,
> diff --git a/fs/xfs/xfs_xattr.h b/fs/xfs/xfs_xattr.h
> index 2b09133b1b9b..cec766cad26c 100644
> --- a/fs/xfs/xfs_xattr.h
> +++ b/fs/xfs/xfs_xattr.h
> @@ -8,6 +8,6 @@
>  
>  int xfs_attr_change(struct xfs_da_args *args);
>  
> -extern const struct xattr_handler *xfs_xattr_handlers[];
> +extern const struct xattr_handler * const xfs_xattr_handlers[];
>  
>  #endif /* __XFS_XATTR_H__ */
> -- 
> 2.34.1
>