From: Hani Benhabiles <kroosec@gmail.com>
Date: Mon, 12 May 2014 23:35:15 +0000 (+0100)
Subject: nbd: Close socket on negotiation failure.
X-Git-Tag: v1.7.2~8
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=25351f6a9ad55990d5140a928fd6ea29e48943af;p=thirdparty%2Fqemu.git

nbd: Close socket on negotiation failure.

Otherwise, the nbd client may hang waiting for the server response.

Signed-off-by: Hani Benhabiles <hani@linux.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit 36af599417dde11747a27dc8550ff2281657a8ff)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---

diff --git a/blockdev-nbd.c b/blockdev-nbd.c
index a700d52d71a..18dc528761a 100644
--- a/blockdev-nbd.c
+++ b/blockdev-nbd.c
@@ -27,8 +27,8 @@ static void nbd_accept(void *opaque)
     socklen_t addr_len = sizeof(addr);
 
     int fd = accept(server_fd, (struct sockaddr *)&addr, &addr_len);
-    if (fd >= 0) {
-        nbd_client_new(NULL, fd, nbd_client_put);
+    if (fd >= 0 && !nbd_client_new(NULL, fd, nbd_client_put)) {
+        close(fd);
     }
 }
 
diff --git a/qemu-nbd.c b/qemu-nbd.c
index c26c98ef1d9..7a2cff92c2a 100644
--- a/qemu-nbd.c
+++ b/qemu-nbd.c
@@ -299,8 +299,10 @@ static void nbd_accept(void *opaque)
         return;
     }
 
-    if (fd >= 0 && nbd_client_new(exp, fd, nbd_client_closed)) {
+    if (nbd_client_new(exp, fd, nbd_client_closed)) {
         nb_fds++;
+    } else {
+        close(fd);
     }
 }