tests/qtest/libqtest.c: Check for setsockopt() failure

In socket_accept() we use setsockopt() to set SO_RCVTIMEO,
but we don't check the return value for failure. Do so.

Fixes: Coverity CID 1432321
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20201103115112.19211-1-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/tests/qtest/libqtest.c b/tests/qtest/libqtest.c
index 99deff47ef..be0fb430dd 100644
--- a/tests/qtest/libqtest.c
+++ b/tests/qtest/libqtest.c
@@ -110,8 +110,13 @@ static int socket_accept(int sock)
     struct timeval timeout = { .tv_sec = SOCKET_TIMEOUT,
                                .tv_usec = 0 };
 
-    setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, (void *)&timeout,
-               sizeof(timeout));
+    if (qemu_setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO,
+                        (void *)&timeout, sizeof(timeout))) {
+        fprintf(stderr, "%s failed to set SO_RCVTIMEO: %s\n",
+                __func__, strerror(errno));
+        close(sock);
+        return -1;
+    }
 
     do {
         addrlen = sizeof(addr);