From: Christoph Hellwig <hch@lst.de>
To: "David S. Miller" <davem@davemloft.net>
Cc: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Chas Williams <3chas3@gmail.com>,
Pablo Neira Ayuso <pablo@netfilter.org>,
Jozsef Kadlecsik <kadlec@netfilter.org>,
Florian Westphal <fw@strlen.de>,
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
bpf@vger.kernel.org, netfilter-devel@vger.kernel.org,
linux-sctp@vger.kernel.org, linux-arch@vger.kernel.org,
linux-bluetooth@vger.kernel.org,
bridge@lists.linux-foundation.org, linux-can@vger.kernel.org,
dccp@vger.kernel.org, linux-wpan@vger.kernel.org,
mptcp@lists.01.org
Subject: [PATCH 03/22] net: streamline __sys_getsockopt
Date: Fri, 17 Jul 2020 08:23:12 +0200 [thread overview]
Message-ID: <20200717062331.691152-4-hch@lst.de> (raw)
In-Reply-To: <20200717062331.691152-1-hch@lst.de>
Return early when sockfd_lookup_light fails to reduce a level of
indentation for most of the function body.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
net/socket.c | 31 ++++++++++++++-----------------
1 file changed, 14 insertions(+), 17 deletions(-)
diff --git a/net/socket.c b/net/socket.c
index 49a6daf0293b83..b79376b17b45b7 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2163,28 +2163,25 @@ static int __sys_getsockopt(int fd, int level, int optname,
int max_optlen;
sock = sockfd_lookup_light(fd, &err, &fput_needed);
- if (sock != NULL) {
- err = security_socket_getsockopt(sock, level, optname);
- if (err)
- goto out_put;
+ if (!sock)
+ return err;
- max_optlen = BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen);
+ err = security_socket_getsockopt(sock, level, optname);
+ if (err)
+ goto out_put;
- if (level == SOL_SOCKET)
- err =
- sock_getsockopt(sock, level, optname, optval,
+ max_optlen = BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen);
+
+ if (level == SOL_SOCKET)
+ err = sock_getsockopt(sock, level, optname, optval, optlen);
+ else
+ err = sock->ops->getsockopt(sock, level, optname, optval,
optlen);
- else
- err =
- sock->ops->getsockopt(sock, level, optname, optval,
- optlen);
- err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level, optname,
- optval, optlen,
- max_optlen, err);
+ err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level, optname, optval,
+ optlen, max_optlen, err);
out_put:
- fput_light(sock->file, fput_needed);
- }
+ fput_light(sock->file, fput_needed);
return err;
}
--
2.27.0
next prev parent reply other threads:[~2020-07-17 6:26 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-17 6:23 sockopt cleanups Christoph Hellwig
2020-07-17 6:23 ` [PATCH 01/22] net/atm: remove the atmdev_ops {get,set}sockopt methods Christoph Hellwig
2020-07-17 6:23 ` [PATCH 02/22] net: streamline __sys_setsockopt Christoph Hellwig
2020-07-17 6:23 ` Christoph Hellwig [this message]
2020-07-17 6:23 ` [PATCH 04/22] net: simplify cBPF setsockopt compat handling Christoph Hellwig
2020-07-17 6:23 ` [PATCH 05/22] net: remove compat_sock_common_{get,set}sockopt Christoph Hellwig
2020-07-17 9:18 ` [MPTCP] " Matthieu Baerts
2020-07-17 9:26 ` Stefan Schmidt
2020-07-17 6:23 ` [PATCH 06/22] net: remove compat_sys_{get,set}sockopt Christoph Hellwig
2020-07-17 6:23 ` [PATCH 07/22] netfilter/arp_tables: clean up compat {get,set}sockopt handling Christoph Hellwig
2020-07-17 6:23 ` [PATCH 08/22] netfilter/ip_tables: " Christoph Hellwig
2020-07-17 6:23 ` [PATCH 09/22] netfilter/ip6_tables: " Christoph Hellwig
2020-07-17 6:23 ` [PATCH 10/22] netfilter/ebtables: " Christoph Hellwig
2020-07-17 6:23 ` [PATCH 11/22] netfilter: remove the compat_{get,set} methods Christoph Hellwig
2020-07-17 6:23 ` [PATCH 12/22] netfilter: remove the compat argument to xt_copy_counters_from_user Christoph Hellwig
2020-07-17 6:23 ` [PATCH 13/22] netfilter: split nf_sockopt Christoph Hellwig
2020-07-17 6:23 ` [PATCH 14/22] net/ipv4: factor out MCAST_MSFILTER getsockopt helpers Christoph Hellwig
2020-07-17 6:23 ` [PATCH 15/22] net/ipv4: factor out MCAST_MSFILTER setsockopt helpers Christoph Hellwig
2020-07-17 6:23 ` [PATCH 16/22] net/ipv4: factor out mcast join/leave " Christoph Hellwig
2020-07-17 6:23 ` [PATCH 17/22] net/ipv4: remove compat_ip_{get,set}sockopt Christoph Hellwig
2020-07-17 6:23 ` [PATCH 18/22] net/ipv6: factor out MCAST_MSFILTER getsockopt helpers Christoph Hellwig
2020-07-17 6:23 ` [PATCH 19/22] net/ipv6: factor out MCAST_MSFILTER setsockopt helpers Christoph Hellwig
2020-07-17 6:23 ` [PATCH 20/22] net/ipv6: factor out mcast join/leave " Christoph Hellwig
2020-07-17 6:23 ` [PATCH 21/22] net/ipv6: remove compat_ipv6_{get,set}sockopt Christoph Hellwig
2020-07-17 6:23 ` [PATCH 22/22] net: make ->{get,set}sockopt in proto_ops optional Christoph Hellwig
2020-07-17 8:01 ` Marc Kleine-Budde
2020-07-20 1:16 ` sockopt cleanups David Miller
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