linux-kernel - Re: [PATCH] vfs: use UAPI types for new struct delegation definition

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <75186ab2-8fc8-4ac1-aebe-a616ba75388e@app.fastmail.com>
Date: Wed, 03 Dec 2025 15:14:31 +0100
From: "Arnd Bergmann" <arnd@...db.de>
To: Thomas Weißschuh <thomas.weissschuh@...utronix.de>,
 "Jeff Layton" <jlayton@...nel.org>, "Chuck Lever" <chuck.lever@...cle.com>,
 "Alexander Aring" <alex.aring@...il.com>, "Jan Kara" <jack@...e.cz>,
 "Christian Brauner" <brauner@...nel.org>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] vfs: use UAPI types for new struct delegation definition

On Wed, Dec 3, 2025, at 14:57, Thomas Weißschuh wrote:
> Using libc types and headers from the UAPI headers is problematic as it
> introduces a dependency on a full C toolchain.
>
> Use the fixed-width integer types provided by the UAPI headers instead.
>
> Fixes: 1602bad16d7d ("vfs: expose delegation support to userland")
> Fixes: 4be9e04ebf75 ("vfs: add needed headers for new struct delegation 
> definition")
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>

Acked-by: Arnd Bergmann <arnd@...db.de>

> --- a/include/uapi/linux/fcntl.h
> +++ b/include/uapi/linux/fcntl.h
> @@ -4,11 +4,7 @@
> 
>  #include <asm/fcntl.h>
>  #include <linux/openat2.h>
> -#ifdef __KERNEL__
>  #include <linux/types.h>
> -#else
> -#include <stdint.h>
> -#endif

I think we have a couple more files that could use similar changes,
but they tend to be at a larger scale:

include/uapi/linux/fuse.h
include/uapi/linux/idxd.h
include/uapi/linux/ax25.h
include/uapi/regulator/regulator.h
include/uapi/xen/privcmd.h

     Arnd