--- /dev/null
+#ifndef foowincompatfoo
+#define foowincompatfoo
+
+// This file and its companion wincompat.c provide some Posix interfaces to
+// Windows APIs so the rest of the code can keep using them.
+
+
+// require at least Windows Vista
+#undef WINVER
+#undef _WIN32_WINNT
+#define WINVER 0x0600
+#define _WIN32_WINNT WINVER
+
+#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
+// with WSARecvMsg/WSASendMsg, so we implement the former in terms of the
+// latter.
+
+struct iovec { /* Scatter/gather array items */
+ void *iov_base; /* Starting address */
+ size_t iov_len; /* Number of bytes to transfer */
+};
+
+struct msghdr {
+ void *msg_name; /* optional address */
+ socklen_t msg_namelen; /* size of address */
+ struct iovec *msg_iov; /* scatter/gather array */
+ size_t msg_iovlen; /* # elements in msg_iov */
+ void *msg_control; /* ancillary data, see below */
+ size_t msg_controllen; /* ancillary data buffer len */
+ int msg_flags; /* flags on received message */
+};
+
+// 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__
+ #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 = (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 = (char*)m->msg_control;
+ return WSA_CMSG_NXTHDR(&wm, c);
+}
+
+#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)
+
+#ifdef _MSC_VER
+ // 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
+#endif
+
+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.
+
+struct utsname {
+ char sysname[9]; /* Operating system name (e.g., "Linux") */
+ char nodename[MAX_COMPUTERNAME_LENGTH+1];
+ /* Name within "some implementation-defined network" */
+ char release[9]; /* Operating system release (e.g., "2.6.28") */
+ char version[9]; /* Operating system version */
+ char machine[9]; /* Hardware identifier */
+};
+
+int uname(struct utsname *buf);
+
+
+#endif
projects / catta / blobdiff