1 /*-------------------------------------------------------------------------
6 * Copyright (c) 1996-2010, PostgreSQL Global Development Group
8 * This is a replacement version of pipe for Win32 which allows
9 * returned handles to be used in select(). Note that read/write calls
10 * must be replaced with recv/send.
13 * $PostgreSQL: pgsql/src/port/pipe.c,v 1.16 2010/01/02 16:58:13 momjian Exp $
15 *-------------------------------------------------------------------------
22 pgpipe(int handles[2])
25 struct sockaddr_in serv_addr;
26 int len = sizeof(serv_addr);
28 handles[0] = handles[1] = INVALID_SOCKET;
30 if ((s = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
32 ereport(LOG, (errmsg_internal("pgpipe failed to create socket: %ui", WSAGetLastError())));
36 memset((void *) &serv_addr, 0, sizeof(serv_addr));
37 serv_addr.sin_family = AF_INET;
38 serv_addr.sin_port = htons(0);
39 serv_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
40 if (bind(s, (SOCKADDR *) &serv_addr, len) == SOCKET_ERROR)
42 ereport(LOG, (errmsg_internal("pgpipe failed to bind: %ui", WSAGetLastError())));
46 if (listen(s, 1) == SOCKET_ERROR)
48 ereport(LOG, (errmsg_internal("pgpipe failed to listen: %ui", WSAGetLastError())));
52 if (getsockname(s, (SOCKADDR *) &serv_addr, &len) == SOCKET_ERROR)
54 ereport(LOG, (errmsg_internal("pgpipe failed to getsockname: %ui", WSAGetLastError())));
58 if ((handles[1] = socket(PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
60 ereport(LOG, (errmsg_internal("pgpipe failed to create socket 2: %ui", WSAGetLastError())));
65 if (connect(handles[1], (SOCKADDR *) &serv_addr, len) == SOCKET_ERROR)
67 ereport(LOG, (errmsg_internal("pgpipe failed to connect socket: %ui", WSAGetLastError())));
71 if ((handles[0] = accept(s, (SOCKADDR *) &serv_addr, &len)) == INVALID_SOCKET)
73 ereport(LOG, (errmsg_internal("pgpipe failed to accept socket: %ui", WSAGetLastError())));
74 closesocket(handles[1]);
75 handles[1] = INVALID_SOCKET;
85 piperead(int s, char *buf, int len)
87 int ret = recv(s, buf, len, 0);
89 if (ret < 0 && WSAGetLastError() == WSAECONNRESET)
90 /* EOF on the pipe! (win32 socket based implementation) */