X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fcompat%2Fwindows%2Fwincompat.h;h=1ce3ac87db8fa41d2f469c13ab3ba6d0ebe96e1a;hb=555fb0b9e9a6228e7cc3f743679d98237e22a6ea;hp=c82ca6c19851779db2ea7271dd34691635ea56d5;hpb=45fd76be0ef793b130720bb64b0356aa4e4566ec;p=catta diff --git a/src/compat/windows/wincompat.h b/src/compat/windows/wincompat.h index c82ca6c..1ce3ac8 100644 --- a/src/compat/windows/wincompat.h +++ b/src/compat/windows/wincompat.h @@ -1,18 +1,217 @@ #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 // Vista +#define WINVER 0x0600 #define _WIN32_WINNT WINVER #include #include +#include +#include + +// TODO: fix mingw32 x86 or drop support and use x86_x64 +// copied from x86_64-4.8.3-release-posix-seh-rt_v3-rev0 for mingw32 x86 4.8.1 +#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR) + // from winsock2.h + #define POLLRDNORM 0x0100 + #define POLLRDBAND 0x0200 + #define POLLIN (POLLRDNORM | POLLRDBAND) + #define POLLPRI 0x0400 + + #define POLLWRNORM 0x0010 + #define POLLOUT (POLLWRNORM) + #define POLLWRBAND 0x0020 + + #define POLLERR 0x0001 + #define POLLHUP 0x0002 + #define POLLNVAL 0x0004 + + typedef struct pollfd { + SOCKET fd; + short events; + short revents; + } WSAPOLLFD, *PWSAPOLLFD, *LPWSAPOLLFD; + + // to fix redefenition of 'timespec' defined in pthread.h and parts/time.h used by simple-watch.c + #define HAVE_STRUCT_TIMESPEC + + // from ws2ipdef.h + #define IPV6_HOPOPTS 1 + #define IPV6_HDRINCL 2 + #define IPV6_UNICAST_HOPS 4 + #define IPV6_MULTICAST_IF 9 + #define IPV6_MULTICAST_HOPS 10 + #define IPV6_MULTICAST_LOOP 11 + #define IPV6_ADD_MEMBERSHIP 12 + #define IPV6_JOIN_GROUP IPV6_ADD_MEMBERSHIP + #define IPV6_DROP_MEMBERSHIP 13 + #define IPV6_LEAVE_GROUP IPV6_DROP_MEMBERSHIP + #define IPV6_DONTFRAG 14 + #define IPV6_PKTINFO 19 + #define IPV6_HOPLIMIT 21 + #define IPV6_PROTECTION_LEVEL 23 + #define IPV6_RECVIF 24 + #define IPV6_RECVDSTADDR 25 + #define IPV6_CHECKSUM 26 + #define IPV6_V6ONLY 27 + #define IPV6_IFLIST 28 + #define IPV6_ADD_IFLIST 29 + #define IPV6_DEL_IFLIST 30 + #define IPV6_UNICAST_IF 31 + #define IPV6_RTHDR 32 + #define IPV6_RECVRTHDR 38 + #define IPV6_TCLASS 39 + #define IPV6_RECVTCLASS 40 + + // from errno.h + #ifndef EADDRINUSE + #define EADDRINUSE 100 + #endif + + #ifndef EWOULDBLOCK + #define EWOULDBLOCK 140 + #endif + + // from mswsock.h + #define MSG_TRUNC 0x0100 + #define MSG_CTRUNC 0x0200 + + // from netioapi.h + //.... lots of dependencies x-( + // TODO: fix mingw32 x86 or drop support and use x86_x64 +#endif + + +// 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) + +// 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); + +// 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) -typedef int socklen_t; +// Windows logically doesn't have uname, so we supply a replacement. struct utsname { char sysname[9]; /* Operating system name (e.g., "Linux") */