linux-kernel - Re: [PATCH v3 3/9] net/socket: Break down __sys

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: <64e0d3359f90d_3119e32942c@willemb.c.googlers.com.notmuch>
Date:   Sat, 19 Aug 2023 10:35:33 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Breno Leitao <leitao@...ian.org>, sdf@...gle.com, axboe@...nel.dk,
        asml.silence@...il.com, willemdebruijn.kernel@...il.com,
        martin.lau@...ux.dev, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, io-uring@...r.kernel.org, krisman@...e.de
Subject: Re: [PATCH v3 3/9] net/socket: Break down __sys_setsockopt

Breno Leitao wrote:
> Split __sys_setsockopt() into two functions by removing the core
> logic into a sub-function (do_sock_setsockopt()). This will avoid
> code duplication when doing the same operation in other callers, for
> instance.
> 
> do_sock_setsockopt() will be called by io_uring setsockopt() command
> operation in the following patch.
> 
> Signed-off-by: Breno Leitao <leitao@...ian.org>

Reviewed-by: Willem de Bruijn <willemb@...gle.com>
> ---
>  include/net/sock.h |  2 ++
>  net/socket.c       | 39 +++++++++++++++++++++++++--------------
>  2 files changed, 27 insertions(+), 14 deletions(-)
> 
> diff --git a/include/net/sock.h b/include/net/sock.h
> index 2eb916d1ff64..2a0324275347 100644
> --- a/include/net/sock.h
> +++ b/include/net/sock.h
> @@ -1853,6 +1853,8 @@ int sk_setsockopt(struct sock *sk, int level, int optname,
>  		  sockptr_t optval, unsigned int optlen);
>  int sock_setsockopt(struct socket *sock, int level, int op,
>  		    sockptr_t optval, unsigned int optlen);
> +int do_sock_setsockopt(struct socket *sock, bool compat, int level,
> +		       int optname, sockptr_t optval, int optlen);

Somewhat surprising that optlen type differs between __sys_setsockopt
and sock_setsockopt. But agreed that this code should follow
__sys_setsockopt.