readpipe/writepite/closepipe for fake pipes on Windows

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

diff --git a/src/compat/windows/wincompat.h b/src/compat/windows/wincompat.h
index 6510183a870b86f95644cd6b7c64ce9bfdff9f19..f611e33e581534346e81022dafb3f83759c87084 100644 (file)
--- a/src/compat/windows/wincompat.h
+++ b/src/compat/windows/wincompat.h
@@ -16,6 +16,15 @@
 #include <mswsock.h>
 
 
+// wrappers around WSAStartup/WSACleanup to avoid clutter
+void winsock_init(void);
+void winsock_exit(void);
+
+
+// the equivalent of strerror(errno) for Windows sockets
+char *errnostrsocket(void);
+
+
 // Winsock doesn't have recvmsg/sendmsg but offers the same functionality
 // with WSARecvMsg/WSASendMsg, so we implement the former in terms of the
 // latter.
@@ -69,6 +78,32 @@ static inline struct cmsghdr *CMSG_NXTHDR(struct msghdr *m, struct cmsghdr *c) {
 ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
 ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
 
+// ESHUTDOWN does not seem to exist on Windows, even though WSAESHUTDOWN does.
+// MingW doesn't define it and MSDN doesn't list it, so we alias it to EBADF.
+// cf. http://msdn.microsoft.com/en-us/library/5814770t.aspx
+#ifndef ESHUTDOWN
+#define ESHUTDOWN EBADF
+#endif
+
+
+// Windows doesn't have ioctl but offers ioctlsocket for some socket-related
+// functions. Unfortunately, argument types differ, so we implement a
+// (restricted) wrapper.
+int ioctl(int d, unsigned long request, int *p);
+
+
+// Windows lacks poll, but WSAPoll is good enough for us.
+#define poll(fds, nfds, timeout) WSAPoll(fds, nfds, timeout)
+
+// Windows lacks pipe. It has an equivalent CreatePipe but we really need
+// something to give to WSAPoll, so we fake it with a local TCP socket. (ugh)
+int pipe(int pipefd[2]);
+
+// pipe(socket)-specific read/write/close equivalents
+#define closepipe closesocket
+#define writepipe(s,buf,len) send(s, buf, len, 0)
+#define readpipe(s,buf,len) recv(s, buf, len, 0)
+
 
 // Windows logically doesn't have uname, so we supply a replacement.