tcp: don't mask EOF and socket errors on nonblocking splice receive
Currently, setting SPLICE_F_NONBLOCK on splice from a TCP socket
results in masking of EOF (RDHUP) and error conditions on the socket
by an -EAGAIN return. Move the NONBLOCK check in tcp_splice_read()
to be after the EOF and error checks to fix this.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 4d655e9..bce1b06 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -580,10 +580,6 @@
else if (!ret) {
if (spliced)
break;
- if (flags & SPLICE_F_NONBLOCK) {
- ret = -EAGAIN;
- break;
- }
if (sock_flag(sk, SOCK_DONE))
break;
if (sk->sk_err) {
@@ -601,6 +597,10 @@
ret = -ENOTCONN;
break;
}
+ if (flags & SPLICE_F_NONBLOCK) {
+ ret = -EAGAIN;
+ break;
+ }
if (!timeo) {
ret = -EAGAIN;
break;
