1 files changed, 95 insertions, 0 deletions
diff --git a/src/backend/port/pipe.c b/src/backend/port/pipe.c
new file mode 100644
index 00000000000..eeed3fc2e11
--- /dev/null
+++ b/src/backend/port/pipe.c
@@ -0,0 +1,95 @@
+/*-------------------------------------------------------------------------
+ *
+ * pipe.c
+ *	  pipe()
+ *
+ * Copyright (c) 1996-2011, PostgreSQL Global Development Group
+ *
+ *	This is a replacement version of pipe for Win32 which allows
+ *	returned handles to be used in select(). Note that read/write calls
+ *	must be replaced with recv/send.
+ *
+ * IDENTIFICATION
+ *	  src/backend/port/pipe.c
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#include "postgres.h"
+
+#ifdef WIN32
+int
+pgpipe(int handles[2])
+{
+	SOCKET		s;
+	struct sockaddr_in serv_addr;
+	int			len = sizeof(serv_addr);
+
+	handles[0] = handles[1] = INVALID_SOCKET;
+
+	if ((s = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
+	{
+		ereport(LOG, (errmsg_internal("pgpipe failed to create socket: %ui", WSAGetLastError())));
+		return -1;
+	}
+
+	memset((void *) &serv_addr, 0, sizeof(serv_addr));
+	serv_addr.sin_family = AF_INET;
+	serv_addr.sin_port = htons(0);
+	serv_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+	if (bind(s, (SOCKADDR *) & serv_addr, len) == SOCKET_ERROR)
+	{
+		ereport(LOG, (errmsg_internal("pgpipe failed to bind: %ui", WSAGetLastError())));
+		closesocket(s);
+		return -1;
+	}
+	if (listen(s, 1) == SOCKET_ERROR)
+	{
+		ereport(LOG, (errmsg_internal("pgpipe failed to listen: %ui", WSAGetLastError())));
+		closesocket(s);
+		return -1;
+	}
+	if (getsockname(s, (SOCKADDR *) & serv_addr, &len) == SOCKET_ERROR)
+	{
+		ereport(LOG, (errmsg_internal("pgpipe failed to getsockname: %ui", WSAGetLastError())));
+		closesocket(s);
+		return -1;
+	}
+	if ((handles[1] = socket(PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
+	{
+		ereport(LOG, (errmsg_internal("pgpipe failed to create socket 2: %ui", WSAGetLastError())));
+		closesocket(s);
+		return -1;
+	}
+
+	if (connect(handles[1], (SOCKADDR *) & serv_addr, len) == SOCKET_ERROR)
+	{
+		ereport(LOG, (errmsg_internal("pgpipe failed to connect socket: %ui", WSAGetLastError())));
+		closesocket(s);
+		return -1;
+	}
+	if ((handles[0] = accept(s, (SOCKADDR *) & serv_addr, &len)) == INVALID_SOCKET)
+	{
+		ereport(LOG, (errmsg_internal("pgpipe failed to accept socket: %ui", WSAGetLastError())));
+		closesocket(handles[1]);
+		handles[1] = INVALID_SOCKET;
+		closesocket(s);
+		return -1;
+	}
+	closesocket(s);
+	return 0;
+}
+
+
+int
+piperead(int s, char *buf, int len)
+{
+	int			ret = recv(s, buf, len, 0);
+
+	if (ret < 0 && WSAGetLastError() == WSAECONNRESET)
+		/* EOF on the pipe! (win32 socket based implementation) */
+		ret = 0;
+	return ret;
+}
+
+#endif