nbd: Shutdown socket before closing.

This forces finishing data sending to client before closing the socket like in
exports listing or replying with NBD_REP_ERR_UNSUP cases.

Signed-off-by: Hani Benhabiles <kroosec@gmail.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit 27e5eae4577316f7e86a56eb7363d4e78f79e3e5)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/qemu-nbd.c b/qemu-nbd.c
index 4f53b9b079..8a49798b8a 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -372,6 +372,7 @@ static void nbd_accept(void *opaque)
     if (nbd_client_new(exp, fd, nbd_client_closed)) {
         nb_fds++;
     } else {
+        shutdown(fd, 2);
         close(fd);
     }
 }