[Qemu-devel] [PATCH v9 06/20] Add G_IO_HUP handler for socket chardev

[Antonios Motakis <a.motakis@virtualopensystems.com>]

This is used to detect that the remote end has disconnected. Just call
tcp_char_disconnect on receiving this event.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
---
 qemu-char.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/qemu-char.c b/qemu-char.c
index f9bd047..68a37d2 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2673,6 +2673,21 @@ CharDriverState *qemu_chr_open_eventfd(int eventfd)
 }
 #endif
 
+static gboolean tcp_chr_chan_close(GIOChannel *channel, GIOCondition cond,
+                                   void *opaque)
+{
+    CharDriverState *chr = opaque;
+
+    if (cond != G_IO_HUP) {
+        return FALSE;
+    }
+
+    /* connection closed */
+    tcp_chr_disconnect(chr);
+
+    return TRUE;
+}
+
 static void tcp_chr_connect(void *opaque)
 {
     CharDriverState *chr = opaque;
@@ -2682,6 +2697,7 @@ static void tcp_chr_connect(void *opaque)
     if (s->chan) {
         chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
                                            tcp_chr_read, chr);
+        g_io_add_watch(s->chan, G_IO_HUP, tcp_chr_chan_close, chr);
     }
     qemu_chr_be_generic_open(chr);
 }
-- 
1.8.3.2