Messages in this thread Patch in this message | | | From | Alex Gartrell <> | Subject | [PATCH net-next] tun: return proper error code from tun_do_read | Date | Thu, 25 Dec 2014 23:22:49 -0800 |
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Instead of -1 with EAGAIN, read on a O_NONBLOCK tun fd will return 0. This fixes this by properly returning the error code from __skb_recv_datagram.
Signed-off-by: Alex Gartrell <agartrell@fb.com> --- drivers/net/tun.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index a5cbf67..2f65d6c 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1378,7 +1378,7 @@ static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile, skb = __skb_recv_datagram(tfile->socket.sk, noblock ? MSG_DONTWAIT : 0, &peeked, &off, &err); if (!skb) - return 0; + return err; ret = tun_put_user(tun, tfile, skb, to); if (unlikely(ret < 0)) -- Alex Gartrell <agartrell@fb.com>
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