1 files changed, 66 insertions, 0 deletions

diff --git a/serial/manager.c b/serial/manager.c
index 6b60423d..bd0362df 100644
--- a/serial/manager.c
+++ b/serial/manager.c
@@ -57,6 +57,10 @@
 
 #define BASE_UUID			"00000000-0000-1000-8000-00805F9B34FB"
 
+/* Waiting for udev to create the device node */
+#define MAX_OPEN_TRIES 		5
+#define OPEN_WAIT		300	/* ms */
+
 struct pending_connect {
 	DBusConnection	*conn;
 	DBusMessage	*msg;
@@ -89,6 +93,16 @@ static struct {
 	{ NULL }
 };
 
+typedef void (*open_notify_t) (int fd, int err, void *data);
+typedef void (*udata_free_t) (void *data);
+struct open_context {
+	char		*dev;
+	open_notify_t	notify;
+	udata_free_t	ufree;
+	void		*udata;
+	int		ntries;
+};
+
 static DBusConnection *connection = NULL;
 static GSList *pending_connects = NULL;
 static int rfcomm_ctl = -1;
@@ -130,6 +144,58 @@ static struct pending_connect *find_pending_connect_by_pattern(const char *bda,
 	return NULL;
 }
 
+static gboolean open_continue(struct open_context *oc)
+{
+	int fd;
+
+	fd = open(oc->dev, O_RDONLY | O_NOCTTY);
+	if (fd < 0) {
+		int err = errno;
+		error("Could not open %s: %s (%d)",
+				oc->dev, strerror(err), err);
+		if (++oc->ntries >= MAX_OPEN_TRIES) {
+			/* Reporting error */
+			oc->notify(fd, err, oc->udata);
+			return FALSE;
+		}
+		return TRUE;
+	}
+	/* Connection succeeded */
+	oc->notify(fd, 0, oc->udata);
+	return FALSE;
+}
+
+static void open_context_free(void *data)
+{
+	struct open_context *oc = data;
+
+	if (oc->ufree)
+		oc->ufree(oc->udata);
+	g_free(oc->dev);
+	g_free(oc);
+}
+
+int port_open(const char *dev, open_notify_t notify,
+			void *udata, udata_free_t ufree)
+{
+	int fd;
+
+	fd = open(dev, O_RDONLY | O_NOCTTY);
+	if (fd < 0) {
+		struct open_context *oc;
+		oc	= g_new0(struct open_context, 1);
+		oc->dev	= g_strdup(dev);
+		oc->notify	= notify;
+		oc->ufree	= ufree;
+		oc->udata	= udata;
+		g_timeout_add_full(G_PRIORITY_DEFAULT_IDLE, OPEN_WAIT,
+			(GSourceFunc) open_continue, oc, open_context_free);
+		return -EINPROGRESS;
+	}
+
+	return fd;
+}
+
 static uint16_t str2class(const char *pattern)
 {
 	int i;