linux-kernel - [RFC PATCH v5 1/4] vsock: return errors other than -ENOMEM to socket

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Message-ID: <c22a2ad3-1670-169b-7184-8f4a6d90ba06@sberdevices.ru>
Date:   Tue, 20 Dec 2022 07:18:48 +0000
From:   Arseniy Krasnov <AVKrasnov@...rdevices.ru>
To:     Stefano Garzarella <sgarzare@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "Paolo Abeni" <pabeni@...hat.com>, Jakub Kicinski <kuba@...nel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>,
        kernel <kernel@...rdevices.ru>,
        Bobby Eshleman <bobby.eshleman@...edance.com>,
        Krasnov Arseniy <oxffffaa@...il.com>,
        Arseniy Krasnov <AVKrasnov@...rdevices.ru>
Subject: [RFC PATCH v5 1/4] vsock: return errors other than -ENOMEM to socket

This removes behaviour, where error code returned from any transport
was always switched to ENOMEM. For example when user tries to send too
big message via SEQPACKET socket, transport layers return EMSGSIZE, but
this error code was always replaced with ENOMEM and returned to user.

Signed-off-by: Bobby Eshleman <bobby.eshleman@...edance.com>
Signed-off-by: Arseniy Krasnov <AVKrasnov@...rdevices.ru>
---
 net/vmw_vsock/af_vsock.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index d593d5b6d4b1..19aea7cba26e 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -1861,8 +1861,9 @@ static int vsock_connectible_sendmsg(struct socket *sock, struct msghdr *msg,
 			written = transport->stream_enqueue(vsk,
 					msg, len - total_written);
 		}
+
 		if (written < 0) {
-			err = -ENOMEM;
+			err = written;
 			goto out_err;
 		}
 
-- 
2.25.1