commit bcdeb9be566ded2eb35233aaccf38742a21e5daa
author Marc-André Lureau <marcandre.lureau@redhat.com> Thu Jul 06 19:03:53 2017 +0200
committer Paolo Bonzini <pbonzini@redhat.com> Fri Jul 14 11:04:33 2017 +0200
tree 20c0d1377d188c1f42276b09e757f49e64222b67
parent 747969db2a6cd6e93561f7edc50d824a7d67346b

chardev: block during sync read

A sync read should block until all requested data is
available (instead of retrying in qemu_chr_fe_read_all). Change the
channel to blocking during sync_read.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170706170353.32601-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

chardev/char-socket.c

diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index ccc499c..7e6648b 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -454,7 +454,9 @@
         return 0;
     }
 
+    qio_channel_set_blocking(s->ioc, true, NULL);
     size = tcp_chr_recv(chr, (void *) buf, len);
+    qio_channel_set_blocking(s->ioc, false, NULL);
     if (size == 0) {
         /* connection closed */
         tcp_chr_disconnect(chr);