[Qemu-devel] [PATCH 2/9] char: introduce tcp_chr_detach()

[Amit Shah <amit.shah@redhat.com>]

Remove any registered callbacks if a frontend is detached.

CC: <qemu-stable@nongnu.org>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
---
 qemu-char.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/qemu-char.c b/qemu-char.c
index f27fdb6..e235334 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -2321,6 +2321,16 @@ typedef struct {
     int msgfd;
 } TCPCharDriver;
 
+static void tcp_chr_detach(CharDriverState *chr)
+{
+    TCPCharDriver *s = chr->opaque;
+
+    if (s->tag) {
+        io_remove_watch_poll(s->tag);
+        s->tag = 0;
+    }
+}
+
 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
 
 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
@@ -2689,6 +2699,7 @@ static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
     chr->opaque = s;
     chr->chr_write = tcp_chr_write;
     chr->chr_close = tcp_chr_close;
+    chr->chr_detach = tcp_chr_detach;
     chr->get_msgfd = tcp_get_msgfd;
     chr->chr_add_client = tcp_chr_add_client;
     chr->chr_add_watch = tcp_chr_add_watch;
-- 
1.8.3.1