1 /* 2 * win32 specific declarations 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * Copyright (c) 2010 Jes Sorensen <Jes.Sorensen@redhat.com> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 26 #ifndef QEMU_OS_WIN32_H 27 #define QEMU_OS_WIN32_H 28 29 #include <winsock2.h> 30 #include <windows.h> 31 #include <ws2tcpip.h> 32 #include "qemu/typedefs.h" 33 34 #ifdef HAVE_AFUNIX_H 35 #include <afunix.h> 36 #else 37 /* 38 * Fallback definitions of things we need in afunix.h, if not available from 39 * the used Windows SDK or MinGW headers. 40 */ 41 #define UNIX_PATH_MAX 108 42 43 typedef struct sockaddr_un { 44 ADDRESS_FAMILY sun_family; 45 char sun_path[UNIX_PATH_MAX]; 46 } SOCKADDR_UN, *PSOCKADDR_UN; 47 48 #define SIO_AF_UNIX_GETPEERPID _WSAIOR(IOC_VENDOR, 256) 49 #endif 50 51 #ifdef __cplusplus 52 extern "C" { 53 #endif 54 55 #if defined(__aarch64__) 56 /* 57 * On windows-arm64, setjmp is available in only one variant, and longjmp always 58 * does stack unwinding. This crash with generated code. 59 * Thus, we use another implementation of setjmp (not windows one), coming from 60 * mingw, which never performs stack unwinding. 61 */ 62 #undef setjmp 63 #undef longjmp 64 /* 65 * These functions are not declared in setjmp.h because __aarch64__ defines 66 * setjmp to _setjmpex instead. However, they are still defined in libmingwex.a, 67 * which gets linked automatically. 68 */ 69 int __mingw_setjmp(jmp_buf); 70 void __attribute__((noreturn)) __mingw_longjmp(jmp_buf, int); 71 #define setjmp(env) __mingw_setjmp(env) 72 #define longjmp(env, val) __mingw_longjmp(env, val) 73 #elif defined(_WIN64) 74 /* 75 * On windows-x64, setjmp is implemented by _setjmp which needs a second parameter. 76 * If this parameter is NULL, longjump does no stack unwinding. 77 * That is what we need for QEMU. Passing the value of register rsp (default) 78 * lets longjmp try a stack unwinding which will crash with generated code. 79 */ 80 # undef setjmp 81 # define setjmp(env) _setjmp(env, NULL) 82 #endif /* __aarch64__ */ 83 /* QEMU uses sigsetjmp()/siglongjmp() as the portable way to specify 84 * "longjmp and don't touch the signal masks". Since we know that the 85 * savemask parameter will always be zero we can safely define these 86 * in terms of setjmp/longjmp on Win32. 87 */ 88 #define sigjmp_buf jmp_buf 89 #define sigsetjmp(env, savemask) setjmp(env) 90 #define siglongjmp(env, val) longjmp(env, val) 91 92 /* Missing POSIX functions. Don't use MinGW-w64 macros. */ 93 #ifndef _POSIX_THREAD_SAFE_FUNCTIONS 94 #undef gmtime_r 95 struct tm *gmtime_r(const time_t *timep, struct tm *result); 96 #undef localtime_r 97 struct tm *localtime_r(const time_t *timep, struct tm *result); 98 #endif /* _POSIX_THREAD_SAFE_FUNCTIONS */ 99 100 static inline void os_setup_signal_handling(void) {} 101 static inline void os_daemonize(void) {} 102 static inline void os_setup_post(void) {} 103 static inline void os_set_proc_name(const char *dummy) {} 104 void os_set_line_buffering(void); 105 void os_setup_early_signal_handling(void); 106 107 int getpagesize(void); 108 109 #if !defined(EPROTONOSUPPORT) 110 # define EPROTONOSUPPORT EINVAL 111 #endif 112 113 static inline int os_set_daemonize(bool d) 114 { 115 if (d) { 116 return -ENOTSUP; 117 } 118 return 0; 119 } 120 121 static inline bool is_daemonized(void) 122 { 123 return false; 124 } 125 126 static inline int os_mlock(void) 127 { 128 return -ENOSYS; 129 } 130 131 #define fsync _commit 132 133 #if !defined(lseek) 134 # define lseek _lseeki64 135 #endif 136 137 int qemu_ftruncate64(int, int64_t); 138 139 #if !defined(ftruncate) 140 # define ftruncate qemu_ftruncate64 141 #endif 142 143 static inline char *realpath(const char *path, char *resolved_path) 144 { 145 _fullpath(resolved_path, path, _MAX_PATH); 146 return resolved_path; 147 } 148 149 /* 150 * Older versions of MinGW do not import _lock_file and _unlock_file properly. 151 * This was fixed for v6.0.0 with commit b48e3ac8969d. 152 */ 153 static inline void qemu_flockfile(FILE *f) 154 { 155 #ifdef HAVE__LOCK_FILE 156 _lock_file(f); 157 #endif 158 } 159 160 static inline void qemu_funlockfile(FILE *f) 161 { 162 #ifdef HAVE__LOCK_FILE 163 _unlock_file(f); 164 #endif 165 } 166 167 /* Helper for WSAEventSelect, to report errors */ 168 bool qemu_socket_select(int sockfd, WSAEVENT hEventObject, 169 long lNetworkEvents, Error **errp); 170 171 bool qemu_socket_unselect(int sockfd, Error **errp); 172 173 /* We wrap all the sockets functions so that we can set errno based on 174 * WSAGetLastError(), and use file-descriptors instead of SOCKET. 175 */ 176 177 /* 178 * qemu_close_socket_osfhandle: 179 * @fd: a file descriptor associated with a SOCKET 180 * 181 * Close only the C run-time file descriptor, leave the SOCKET opened. 182 * 183 * Returns zero on success. On error, -1 is returned, and errno is set to 184 * indicate the error. 185 */ 186 int qemu_close_socket_osfhandle(int fd); 187 188 #undef close 189 #define close qemu_close_wrap 190 int qemu_close_wrap(int fd); 191 192 #undef connect 193 #define connect qemu_connect_wrap 194 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr, 195 socklen_t addrlen); 196 197 #undef listen 198 #define listen qemu_listen_wrap 199 int qemu_listen_wrap(int sockfd, int backlog); 200 201 #undef bind 202 #define bind qemu_bind_wrap 203 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr, 204 socklen_t addrlen); 205 206 #undef socket 207 #define socket qemu_socket_wrap 208 int qemu_socket_wrap(int domain, int type, int protocol); 209 210 #undef accept 211 #define accept qemu_accept_wrap 212 int qemu_accept_wrap(int sockfd, struct sockaddr *addr, 213 socklen_t *addrlen); 214 215 #undef shutdown 216 #define shutdown qemu_shutdown_wrap 217 int qemu_shutdown_wrap(int sockfd, int how); 218 219 #undef ioctlsocket 220 #define ioctlsocket qemu_ioctlsocket_wrap 221 int qemu_ioctlsocket_wrap(int fd, int req, void *val); 222 223 #undef getsockopt 224 #define getsockopt qemu_getsockopt_wrap 225 int qemu_getsockopt_wrap(int sockfd, int level, int optname, 226 void *optval, socklen_t *optlen); 227 228 #undef setsockopt 229 #define setsockopt qemu_setsockopt_wrap 230 int qemu_setsockopt_wrap(int sockfd, int level, int optname, 231 const void *optval, socklen_t optlen); 232 233 #undef getpeername 234 #define getpeername qemu_getpeername_wrap 235 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr, 236 socklen_t *addrlen); 237 238 #undef getsockname 239 #define getsockname qemu_getsockname_wrap 240 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr, 241 socklen_t *addrlen); 242 243 #undef send 244 #define send qemu_send_wrap 245 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags); 246 247 #undef sendto 248 #define sendto qemu_sendto_wrap 249 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags, 250 const struct sockaddr *addr, socklen_t addrlen); 251 252 #undef recv 253 #define recv qemu_recv_wrap 254 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags); 255 256 #undef recvfrom 257 #define recvfrom qemu_recvfrom_wrap 258 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags, 259 struct sockaddr *addr, socklen_t *addrlen); 260 261 EXCEPTION_DISPOSITION 262 win32_close_exception_handler(struct _EXCEPTION_RECORD*, void*, 263 struct _CONTEXT*, void*); 264 265 void *qemu_win32_map_alloc(size_t size, HANDLE *h, Error **errp); 266 void qemu_win32_map_free(void *ptr, HANDLE h, Error **errp); 267 268 #ifdef __cplusplus 269 } 270 #endif 271 272 #endif 273