Add Socket Libraries.

[mirror_edk2.git] / StdLib / BsdSocketLib / poll.c

diff --git a/StdLib/BsdSocketLib/poll.c b/StdLib/BsdSocketLib/poll.c
new file mode 100644 (file)
index 0000000..fdf50e8
--- /dev/null
+++ b/StdLib/BsdSocketLib/poll.c
@@ -0,0 +1,57 @@
+/** @file\r
+  Implement the poll API.\r
+\r
+  Copyright (c) 2011, Intel Corporation\r
+  All rights reserved. This program and the accompanying materials\r
+  are licensed and made available under the terms and conditions of the BSD License\r
+  which accompanies this distribution.  The full text of the license may be found at\r
+  http://opensource.org/licenses/bsd-license.php\r
+\r
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include <SocketInternals.h>\r
+\r
+\r
+/**\r
+  Poll the socket for activity\r
+\r
+  @param [in] pDescriptor Descriptor address for the file\r
+\r
+  @param [in] Events      Mask of events to detect\r
+\r
+  @returns    Detected events for the socket\r
+\r
+ **/\r
+short\r
+BslSocketPoll (\r
+  IN struct __filedes * pDescriptor,\r
+  IN short Events\r
+  )\r
+{\r
+  short DetectedEvents;\r
+  EFI_SOCKET_PROTOCOL * pSocketProtocol;\r
+  EFI_STATUS Status;\r
+\r
+  //\r
+  //  Locate the socket protocol\r
+  //\r
+  DetectedEvents = 0;\r
+  pSocketProtocol = BslValidateSocketFd ( pDescriptor, &errno );\r
+  if ( NULL != pSocketProtocol ) {\r
+    //\r
+    //  Poll the socket\r
+    //\r
+    Status = pSocketProtocol->pfnPoll ( pSocketProtocol,\r
+                                        Events,\r
+                                        &DetectedEvents,\r
+                                        &errno );\r
+  }\r
+\r
+  //\r
+  //  Return the detected events\r
+  //\r
+  return DetectedEvents;\r
+}\r