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-rw-r--r--include/sysemu/char.h8
-rw-r--r--qemu-char.c9
2 files changed, 17 insertions, 0 deletions
diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index 0ea9eacc40..ee7e55468f 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -70,6 +70,7 @@ struct CharDriverState {
int (*get_msgfds)(struct CharDriverState *s, int* fds, int num);
int (*set_msgfds)(struct CharDriverState *s, int *fds, int num);
int (*chr_add_client)(struct CharDriverState *chr, int fd);
+ int (*chr_wait_connected)(struct CharDriverState *chr, Error **errp);
IOEventHandler *chr_event;
IOCanReadHandler *chr_can_read;
IOReadHandler *chr_read;
@@ -159,6 +160,13 @@ void qemu_chr_disconnect(CharDriverState *chr);
void qemu_chr_cleanup(void);
/**
+ * @qemu_chr_wait_connected:
+ *
+ * Wait for characted backend to be connected.
+ */
+int qemu_chr_wait_connected(CharDriverState *chr, Error **errp);
+
+/**
* @qemu_chr_new_noreplay:
*
* Create a new character backend from a URI.
diff --git a/qemu-char.c b/qemu-char.c
index 1274f50e00..6eba615818 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -3139,6 +3139,15 @@ static gboolean tcp_chr_accept(QIOChannel *channel,
return TRUE;
}
+int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
+{
+ if (chr->chr_wait_connected) {
+ return chr->chr_wait_connected(chr, errp);
+ }
+
+ return 0;
+}
+
static void tcp_chr_close(CharDriverState *chr)
{
TCPCharDriver *s = chr->opaque;