gio: more implementations of GFileDescriptorBased

Implement GFileDescriptorBased in GSocket{Input,Output}Stream and
GUnix{Input,Output}Stream.

https://bugzilla.gnome.org/show_bug.cgi?id=616852

gio/gsocketinputstream.c

@@ -31,13 +31,20 @@
 #include "gcancellable.h"
 #include "gpollableinputstream.h"
 #include "gioerror.h"
-
+#include "gfiledescriptorbased.h"
 
 static void g_socket_input_stream_pollable_iface_init (GPollableInputStreamInterface *iface);
+#ifdef G_OS_UNIX
+static void g_socket_input_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
+#endif
 
 #define g_socket_input_stream_get_type _g_socket_input_stream_get_type
 G_DEFINE_TYPE_WITH_CODE (GSocketInputStream, g_socket_input_stream, G_TYPE_INPUT_STREAM,
 			 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_INPUT_STREAM, g_socket_input_stream_pollable_iface_init)
+#ifdef G_OS_UNIX
+
+			 G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED, g_socket_input_stream_file_descriptor_based_iface_init)
+#endif
 			 )
 
 enum
@@ -248,6 +255,16 @@ g_socket_input_stream_pollable_read_nonblocking (GPollableInputStream  *pollable
 					 NULL, error);
 }
 
+#ifdef G_OS_UNIX
+static int
+g_socket_input_stream_get_fd (GFileDescriptorBased *fd_based)
+{
+  GSocketInputStream *input_stream = G_SOCKET_INPUT_STREAM (fd_based);
+
+  return g_socket_get_fd (input_stream->priv->socket);
+}
+#endif
+
 static void
 g_socket_input_stream_class_init (GSocketInputStreamClass *klass)
 {
@@ -272,6 +289,14 @@ g_socket_input_stream_class_init (GSocketInputStreamClass *klass)
 							G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 }
 
+#ifdef G_OS_UNIX
+static void
+g_socket_input_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
+{
+  iface->get_fd = g_socket_input_stream_get_fd;
+}
+#endif
+
 static void
 g_socket_input_stream_pollable_iface_init (GPollableInputStreamInterface *iface)
 {

gio/gsocketoutputstream.c

@@ -27,6 +27,7 @@
 #include "goutputstream.h"
 #include "gsocketoutputstream.h"
 #include "gsocket.h"
+#include "glibintl.h"
 
 #include "gsimpleasyncresult.h"
 #include "gcancellable.h"
@@ -34,14 +35,20 @@
 #include "gpollableoutputstream.h"
 #include "gioerror.h"
 #include "glibintl.h"
-
+#include "gfiledescriptorbased.h"
 
 static void g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface);
+#ifdef G_OS_UNIX
+static void g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
+#endif
 
 #define g_socket_output_stream_get_type _g_socket_output_stream_get_type
 G_DEFINE_TYPE_WITH_CODE (GSocketOutputStream, g_socket_output_stream, G_TYPE_OUTPUT_STREAM,
 			 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM, g_socket_output_stream_pollable_iface_init)
-			 )
+#ifdef G_OS_UNIX
+			 G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED, g_socket_output_stream_file_descriptor_based_iface_init)
+#endif
+);
 
 enum
 {
@@ -251,6 +258,16 @@ g_socket_output_stream_pollable_write_nonblocking (GPollableOutputStream  *polla
 				      NULL, error);
 }
 
+#ifdef G_OS_UNIX
+static int
+g_socket_output_stream_get_fd (GFileDescriptorBased *fd_based)
+{
+  GSocketOutputStream *output_stream = G_SOCKET_OUTPUT_STREAM (fd_based);
+
+  return g_socket_get_fd (output_stream->priv->socket);
+}
+#endif
+
 static void
 g_socket_output_stream_class_init (GSocketOutputStreamClass *klass)
 {
@@ -275,6 +292,14 @@ g_socket_output_stream_class_init (GSocketOutputStreamClass *klass)
 							G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 }
 
+#ifdef G_OS_UNIX
+static void
+g_socket_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
+{
+  iface->get_fd = g_socket_output_stream_get_fd;
+}
+#endif
+
 static void
 g_socket_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface)
 {

gio/gunixinputstream.c

@@ -36,6 +36,7 @@
 #include "gunixinputstream.h"
 #include "gcancellable.h"
 #include "gasynchelper.h"
+#include "gfiledescriptorbased.h"
 #include "glibintl.h"
 
 
@@ -61,11 +62,14 @@ enum {
 };
 
 static void g_unix_input_stream_pollable_iface_init (GPollableInputStreamInterface *iface);
+static void g_unix_input_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
 
 G_DEFINE_TYPE_WITH_CODE (GUnixInputStream, g_unix_input_stream, G_TYPE_INPUT_STREAM,
 			 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_INPUT_STREAM,
 						g_unix_input_stream_pollable_iface_init)
-			 );
+			 G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED,
+						g_unix_input_stream_file_descriptor_based_iface_init)
+			 )
 
 struct _GUnixInputStreamPrivate {
   int fd;
@@ -189,6 +193,12 @@ g_unix_input_stream_pollable_iface_init (GPollableInputStreamInterface *iface)
   iface->create_source = g_unix_input_stream_pollable_create_source;
 }
 
+static void
+g_unix_input_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
+{
+  iface->get_fd = (int (*) (GFileDescriptorBased *))g_unix_input_stream_get_fd;
+}
+
 static void
 g_unix_input_stream_set_property (GObject         *object,
 				  guint            prop_id,

gio/gunixoutputstream.c

@@ -36,6 +36,7 @@
 #include "gcancellable.h"
 #include "gsimpleasyncresult.h"
 #include "gasynchelper.h"
+#include "gfiledescriptorbased.h"
 #include "glibintl.h"
 
 
@@ -61,11 +62,14 @@ enum {
 };
 
 static void g_unix_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface);
+static void g_unix_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface);
 
 G_DEFINE_TYPE_WITH_CODE (GUnixOutputStream, g_unix_output_stream, G_TYPE_OUTPUT_STREAM,
 			 G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_OUTPUT_STREAM,
 						g_unix_output_stream_pollable_iface_init)
-			 );
+			 G_IMPLEMENT_INTERFACE (G_TYPE_FILE_DESCRIPTOR_BASED,
+						g_unix_output_stream_file_descriptor_based_iface_init)
+			 )
 
 struct _GUnixOutputStreamPrivate {
   int fd;
@@ -174,6 +178,12 @@ g_unix_output_stream_pollable_iface_init (GPollableOutputStreamInterface *iface)
   iface->create_source = g_unix_output_stream_pollable_create_source;
 }
 
+static void
+g_unix_output_stream_file_descriptor_based_iface_init (GFileDescriptorBasedIface *iface)
+{
+  iface->get_fd = (int (*) (GFileDescriptorBased *))g_unix_output_stream_get_fd;
+}
+
 static void
 g_unix_output_stream_set_property (GObject         *object,
 				   guint            prop_id,