clean incomplete mingw32 4.8.1 wincompat.h defines

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

diff --git a/src/compat/windows/wincompat.h b/src/compat/windows/wincompat.h
index f76dbc4835a1012160d863060f2928dda145ce82..ac151c9ecf7bca078e185e41793db801234bd48f 100644 (file)
--- a/src/compat/windows/wincompat.h
+++ b/src/compat/windows/wincompat.h
@@ -14,6 +14,16 @@
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #include <mswsock.h>
+#include <sys/types.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
@@ -38,34 +48,67 @@ struct msghdr {
 // MSDN says this struct is called wsacmsghdr but MingW uses _WSACMSGHDR.
 // TODO: Verify what it is on actual Windows.
 // cf. http://msdn.microsoft.com/en-us/library/ms741645(v=vs.85).aspx
+// -->
+// MingW32 x86 4.8.1 uses wsacmsghdr, MingW x86_x64 uses _WSACMSGHDR and Visual Studio 2015 RC (ws2def.h) defines:
+// #if(_WIN32_WINNT >= 0x0600)
+// #define _WSACMSGHDR cmsghdr
+// #endif //(_WIN32_WINNT>=0x0600)
+// typedef struct _WSACMSGHDR {
+//     SIZE_T      cmsg_len;
+//     INT         cmsg_level;
+//     INT         cmsg_type;
+//     /* followed by UCHAR cmsg_data[] */
+// } WSACMSGHDR, *PWSACMSGHDR, FAR *LPWSACMSGHDR;
 #ifdef __MINGW32__
-#define cmsghdr _WSACMSGHDR     // as in 'struct cmsghdr'
-#else
-#define cmsghdr wsacmsghdr      // as in 'struct cmsghdr'
+  #ifdef __MINGW64_VERSION_MAJOR
+    #define cmsghdr _WSACMSGHDR     // as in 'struct cmsghdr'
+  #else
+    #define cmsghdr wsacmsghdr      // as in 'struct cmsghdr'
+  #endif
+#elif (_WIN32_WINNT < 0x0600)
+  #define cmsghdr _WSACMSGHDR
 #endif
 
+// VS2015 ws2def.h already defines: #define CMSG_FIRSTHDR WSA_CMSG_FIRSTHDR
+#ifdef CMSG_FIRSTHDR
+#undef CMSG_FIRSTHDR
+#endif
 static inline struct cmsghdr *CMSG_FIRSTHDR(struct msghdr *m) {
     WSAMSG wm;
     wm.Control.len = m->msg_controllen;
-    wm.Control.buf = m->msg_control;
+    wm.Control.buf = (char*)m->msg_control;
     return WSA_CMSG_FIRSTHDR(&wm);
 }
 
+// VS2015 ws2def.h already defines: #define CMSG_NXTHDR WSA_CMSG_NXTHDR
+#ifdef CMSG_NXTHDR
+#undef CMSG_NXTHDR
+#endif
 static inline struct cmsghdr *CMSG_NXTHDR(struct msghdr *m, struct cmsghdr *c) {
     WSAMSG wm;
     wm.Control.len = m->msg_controllen;
-    wm.Control.buf = m->msg_control;
+    wm.Control.buf = (char*)m->msg_control;
     return WSA_CMSG_NXTHDR(&wm, c);
 }
 
-#define CMSG_SPACE(len) WSA_CMSG_SPACE(len)
-#define CMSG_LEN(len) WSA_CMSG_LEN(len)
+#ifndef CMSG_SPACE
+ #define CMSG_SPACE(len) WSA_CMSG_SPACE(len)
+#endif
+#ifndef CMSG_LEN
+ #define CMSG_LEN(len) WSA_CMSG_LEN(len)
+#endif
 
 // we're going to be naughty and redefine CMSG_DATA as an alias even though it
 // is also a constant defined in wincrypt.h which we don't care about.
 #undef CMSG_DATA
 #define CMSG_DATA(c) WSA_CMSG_DATA(c)
 
+// VS2012 and up has no ssize_t defined, before it was defined as unsigned int
+#ifndef _SSIZE_T
+#define _SSIZE_T
+typedef signed int        ssize_t;
+#endif
+
 ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
 ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
 
@@ -77,6 +120,25 @@ ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
 #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.
 
 struct utsname {