netdev - [PATCH v6 5/8] io_uring/cmd: return -EOPNOTSUPP if net is disabled

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Message-Id: <20230913152744.2333228-6-leitao@debian.org>
Date: Wed, 13 Sep 2023 08:27:41 -0700
From: Breno Leitao <leitao@...ian.org>
To: sdf@...gle.com,
	axboe@...nel.dk,
	asml.silence@...il.com,
	willemdebruijn.kernel@...il.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	martin.lau@...ux.dev,
	krisman@...e.de
Cc: bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	io-uring@...r.kernel.org
Subject: [PATCH v6 5/8] io_uring/cmd: return -EOPNOTSUPP if net is disabled

Protect io_uring_cmd_sock() to be called if CONFIG_NET is not set. If
network is not enabled, but io_uring is, then we want to return
-EOPNOTSUPP for any possible socket operation.

This is helpful because io_uring_cmd_sock() can now call functions that
only exits if CONFIG_NET is enabled without having #ifdef CONFIG_NET
inside the function itself.

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 io_uring/uring_cmd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c
index 60f843a357e0..5753c3611b74 100644
--- a/io_uring/uring_cmd.c
+++ b/io_uring/uring_cmd.c
@@ -167,6 +167,7 @@ int io_uring_cmd_import_fixed(u64 ubuf, unsigned long len, int rw,
 }
 EXPORT_SYMBOL_GPL(io_uring_cmd_import_fixed);
 
+#if defined(CONFIG_NET)
 int io_uring_cmd_sock(struct io_uring_cmd *cmd, unsigned int issue_flags)
 {
 	struct socket *sock = cmd->file->private_data;
@@ -193,3 +194,4 @@ int io_uring_cmd_sock(struct io_uring_cmd *cmd, unsigned int issue_flags)
 	}
 }
 EXPORT_SYMBOL_GPL(io_uring_cmd_sock);
+#endif
-- 
2.34.1