From bcdeb9be566ded2eb35233aaccf38742a21e5daa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Thu, 6 Jul 2017 19:03:53 +0200
Subject: [PATCH] chardev: block during sync read
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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 | 2 ++
1 file changed, 2 insertions(+)
diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index ccc499cfa1..7e6648b03a 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -454,7 +454,9 @@ static int tcp_chr_sync_read(Chardev *chr, const uint8_t *buf, int len)
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);