serial: add mm_serial_port_is_open()

2 files changed, 11 insertions, 0 deletions

diff --git a/src/mm-serial-port.c b/src/mm-serial-port.c
index 2600ae51..07010e1d 100644
--- a/src/mm-serial-port.c
+++ b/src/mm-serial-port.c
@@ -852,6 +852,15 @@ mm_serial_port_open (MMSerialPort *self, GError **error)
     return TRUE;
 }
 
+gboolean
+mm_serial_port_is_open (MMSerialPort *self)
+{
+    g_return_val_if_fail (self != NULL, FALSE);
+    g_return_val_if_fail (MM_IS_SERIAL_PORT (self), FALSE);
+
+    return (MM_SERIAL_PORT_GET_PRIVATE (self)->fd >= 0);
+}
+
 void
 mm_serial_port_close (MMSerialPort *self)
 {
diff --git a/src/mm-serial-port.h b/src/mm-serial-port.h
index 841b4fa3..a2697f30 100644
--- a/src/mm-serial-port.h
+++ b/src/mm-serial-port.h
@@ -79,6 +79,8 @@ void     mm_serial_port_set_response_parser (MMSerialPort *self,
                                              gpointer user_data,
                                              GDestroyNotify notify);
 
+gboolean mm_serial_port_is_open           (MMSerialPort *self);
+
 gboolean mm_serial_port_open              (MMSerialPort *self,
                                            GError  **error);