libusb0.sys backend integration - part 2 (Graeme Gill)c190

1 files changed, 69 insertions, 0 deletions

diff --git a/libusb/os/driver/release_interface.c b/libusb/os/driver/release_interface.c
new file mode 100644
index 0000000..0b8987b
--- /dev/null
+++ b/libusb/os/driver/release_interface.c
@@ -0,0 +1,69 @@
+/* LIBUSB-WIN32, Generic Windows USB Library
+ * Copyright (c) 2002-2005 Stephan Meyer <ste_meyer@web.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "libusb_driver.h"
+
+
+
+NTSTATUS release_interface(libusb_device_t *dev, int interface)
+{
+  DEBUG_MESSAGE("release_interface(): interface %d", interface);
+
+  if(!dev->config.value)
+    {
+      DEBUG_ERROR("release_interface(): device is not configured"); 
+      return STATUS_INVALID_DEVICE_STATE;
+    }
+
+  if(interface >= LIBUSB0_MAX_NUMBER_OF_INTERFACES)
+    {
+      DEBUG_ERROR("release_interface(): interface number %d too high", 
+                  interface);
+      return STATUS_INVALID_PARAMETER;
+    }
+
+  if(!dev->config.interfaces[interface].valid)
+    {
+      DEBUG_ERROR("release_interface(): invalid interface %02d", interface);
+      return STATUS_INVALID_PARAMETER;
+    }
+
+  if(!dev->config.interfaces[interface].claimed)
+    {
+      DEBUG_ERROR("claim_interface(): could not release interface %d, "
+                  "interface is not claimed", interface);
+      return STATUS_INVALID_DEVICE_STATE;
+    }
+
+  dev->config.interfaces[interface].claimed = FALSE;
+
+  return STATUS_SUCCESS;
+}
+
+NTSTATUS release_all_interfaces(libusb_device_t *dev)
+{
+  int i;
+  
+  for(i = 0; i < LIBUSB0_MAX_NUMBER_OF_INTERFACES; i++)
+    {
+      dev->config.interfaces[i].claimed = FALSE;
+    }
+
+  return STATUS_SUCCESS;
+}