[Qemu-devel] [PULL 07/41] chardev: block during sync read

[Paolo Bonzini]

From: Marc-André Lureau <address@hidden>

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 <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
Signed-off-by: Marc-André Lureau <address@hidden>
---
 chardev/char-socket.c | 2 ++
 1 file changed, 2 insertions(+)

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 @@ 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);
-- 
1.8.3.1