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Diffstat (limited to 'src/compat/compat.h')
| -rw-r--r-- | src/compat/compat.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/src/compat/compat.h b/src/compat/compat.h new file mode 100644 index 0000000000..a8e5552c0a --- /dev/null +++ b/src/compat/compat.h @@ -0,0 +1,130 @@ +// Copyright (c) 2009-2010 Satoshi Nakamoto +// Copyright (c) 2009-2021 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#ifndef BITCOIN_COMPAT_COMPAT_H +#define BITCOIN_COMPAT_COMPAT_H + +#if defined(HAVE_CONFIG_H) +#include <config/bitcoin-config.h> +#endif + +// Windows defines FD_SETSIZE to 64 (see _fd_types.h in mingw-w64), +// which is too small for our usage, but allows us to redefine it safely. +// We redefine it to be 1024, to match glibc, see typesizes.h. +#ifdef WIN32 +#ifdef FD_SETSIZE +#undef FD_SETSIZE +#endif +#define FD_SETSIZE 1024 +#include <winsock2.h> +#include <ws2tcpip.h> +#include <cstdint> +#else +#include <fcntl.h> +#include <sys/mman.h> +#include <sys/select.h> +#include <sys/socket.h> +#include <sys/types.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netinet/tcp.h> +#include <arpa/inet.h> +#include <ifaddrs.h> +#include <limits.h> +#include <netdb.h> +#include <unistd.h> +#endif + +// We map Linux / BSD error functions and codes, to the equivalent +// Windows definitions, and use the WSA* names throughout our code. +// Note that glibc defines EWOULDBLOCK as EAGAIN (see errno.h). +#ifndef WIN32 +typedef unsigned int SOCKET; +#include <cerrno> +#define WSAGetLastError() errno +#define WSAEINVAL EINVAL +#define WSAEWOULDBLOCK EWOULDBLOCK +#define WSAEAGAIN EAGAIN +#define WSAEMSGSIZE EMSGSIZE +#define WSAEINTR EINTR +#define WSAEINPROGRESS EINPROGRESS +#define WSAEADDRINUSE EADDRINUSE +#define INVALID_SOCKET (SOCKET)(~0) +#define SOCKET_ERROR -1 +#else +// WSAEAGAIN doesn't exist on Windows +#ifdef EAGAIN +#define WSAEAGAIN EAGAIN +#else +#define WSAEAGAIN WSAEWOULDBLOCK +#endif +#endif + +// Windows doesn't define S_IRUSR or S_IWUSR. We define both +// here, with the same values as glibc (see stat.h). +#ifdef WIN32 +#ifndef S_IRUSR +#define S_IRUSR 0400 +#define S_IWUSR 0200 +#endif +#endif + +// Windows defines MAX_PATH as it's maximum path length. +// We define MAX_PATH for use on non-Windows systems. +#ifndef WIN32 +#define MAX_PATH 1024 +#endif + +// ssize_t is POSIX, and not present when using MSVC. +#ifdef _MSC_VER +#include <BaseTsd.h> +typedef SSIZE_T ssize_t; +#endif + +// The type of the option value passed to getsockopt & setsockopt +// differs between Windows and non-Windows. +#ifndef WIN32 +typedef void* sockopt_arg_type; +#else +typedef char* sockopt_arg_type; +#endif + +#ifdef WIN32 +// Export main() and ensure working ASLR when using mingw-w64. +// Exporting a symbol will prevent the linker from stripping +// the .reloc section from the binary, which is a requirement +// for ASLR. While release builds are not affected, anyone +// building with a binutils < 2.36 is subject to this ld bug. +#define MAIN_FUNCTION __declspec(dllexport) int main(int argc, char* argv[]) +#else +#define MAIN_FUNCTION int main(int argc, char* argv[]) +#endif + +// Note these both should work with the current usage of poll, but best to be safe +// WIN32 poll is broken https://daniel.haxx.se/blog/2012/10/10/wsapoll-is-broken/ +// __APPLE__ poll is broke https://github.com/bitcoin/bitcoin/pull/14336#issuecomment-437384408 +#if defined(__linux__) +#define USE_POLL +#endif + +bool static inline IsSelectableSocket(const SOCKET& s) { +#if defined(USE_POLL) || defined(WIN32) + return true; +#else + return (s < FD_SETSIZE); +#endif +} + +// MSG_NOSIGNAL is not available on some platforms, if it doesn't exist define it as 0 +#if !defined(MSG_NOSIGNAL) +#define MSG_NOSIGNAL 0 +#endif + +// MSG_DONTWAIT is not available on some platforms, if it doesn't exist define it as 0 +#if !defined(MSG_DONTWAIT) +#define MSG_DONTWAIT 0 +#endif + +#endif // BITCOIN_COMPAT_COMPAT_H |