add an alias for poll and implement pipe in terms of sockets

[catta] / src / compat / windows / wincompat.c

diff --git a/src/compat/windows/wincompat.c b/src/compat/windows/wincompat.c
index 67cf85364b9047097d82ec6434128c8c31871ecb..4433b5b54648be93ff1fec50c7baa2674a74d11f 100644 (file)
--- a/src/compat/windows/wincompat.c
+++ b/src/compat/windows/wincompat.c
@@ -208,6 +208,52 @@ int ioctl(int d, unsigned long request, int *p)
     return 0;
 }
 
+int pipe(int pipefd[2])
+{
+    int lsock = INVALID_SOCKET;
+    struct sockaddr_in laddr;
+    socklen_t laddrlen = sizeof(laddr);
+
+    pipefd[0] = pipefd[1] = INVALID_SOCKET;
+
+    // bind a listening socket to a TCP port on localhost
+    laddr.sin_family = AF_INET;
+    laddr.sin_port = 0;
+    laddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+    if((lsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == SOCKET_ERROR)
+        goto fail;
+    if(bind(lsock, (struct sockaddr *)&laddr, sizeof(laddr)) == SOCKET_ERROR)
+        goto fail;
+    if(listen(lsock, 1) == SOCKET_ERROR)
+        goto fail;
+
+    // determine which address (i.e. port) we got bound to
+    if(getsockname(lsock, (struct sockaddr *)&laddr, &laddrlen) == SOCKET_ERROR)
+        goto fail;
+    assert(laddrlen == sizeof(laddr));
+    laddr.sin_family = AF_INET;
+    laddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+
+    // connect and accept
+    if((pipefd[0] = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) == SOCKET_ERROR)
+        goto fail;
+    if(connect(pipefd[0], (const struct sockaddr *)&laddr, sizeof(laddr)) == SOCKET_ERROR)
+        goto fail;
+    if((pipefd[1] = accept(lsock, NULL, NULL)) == SOCKET_ERROR)
+        goto fail;
+
+    // close the listener
+    closesocket(lsock);
+
+    return 0;
+
+fail:
+    errno = wsa_errno();
+    closesocket(pipefd[0]);
+    closesocket(lsock);
+    return -1;
+}
+
 int uname(struct utsname *buf)
 {
     SYSTEM_INFO si;