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 static inline void os_setup_limits(void) 132 { 133 return; 134 } 135 136 #define fsync _commit 137 138 #if !defined(lseek) 139 # define lseek _lseeki64 140 #endif 141 142 int qemu_ftruncate64(int, int64_t); 143 144 #if !defined(ftruncate) 145 # define ftruncate qemu_ftruncate64 146 #endif 147 148 static inline char *realpath(const char *path, char *resolved_path) 149 { 150 _fullpath(resolved_path, path, _MAX_PATH); 151 return resolved_path; 152 } 153 154 /* 155 * Older versions of MinGW do not import _lock_file and _unlock_file properly. 156 * This was fixed for v6.0.0 with commit b48e3ac8969d. 157 */ 158 static inline void qemu_flockfile(FILE *f) 159 { 160 #ifdef HAVE__LOCK_FILE 161 _lock_file(f); 162 #endif 163 } 164 165 static inline void qemu_funlockfile(FILE *f) 166 { 167 #ifdef HAVE__LOCK_FILE 168 _unlock_file(f); 169 #endif 170 } 171 172 /* Helper for WSAEventSelect, to report errors */ 173 bool qemu_socket_select(int sockfd, WSAEVENT hEventObject, 174 long lNetworkEvents, Error **errp); 175 176 bool qemu_socket_unselect(int sockfd, Error **errp); 177 178 /* We wrap all the sockets functions so that we can set errno based on 179 * WSAGetLastError(), and use file-descriptors instead of SOCKET. 180 */ 181 182 /* 183 * qemu_close_socket_osfhandle: 184 * @fd: a file descriptor associated with a SOCKET 185 * 186 * Close only the C run-time file descriptor, leave the SOCKET opened. 187 * 188 * Returns zero on success. On error, -1 is returned, and errno is set to 189 * indicate the error. 190 */ 191 int qemu_close_socket_osfhandle(int fd); 192 193 #undef close 194 #define close qemu_close_wrap 195 int qemu_close_wrap(int fd); 196 197 #undef connect 198 #define connect qemu_connect_wrap 199 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr, 200 socklen_t addrlen); 201 202 #undef listen 203 #define listen qemu_listen_wrap 204 int qemu_listen_wrap(int sockfd, int backlog); 205 206 #undef bind 207 #define bind qemu_bind_wrap 208 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr, 209 socklen_t addrlen); 210 211 #undef socket 212 #define socket qemu_socket_wrap 213 int qemu_socket_wrap(int domain, int type, int protocol); 214 215 #undef accept 216 #define accept qemu_accept_wrap 217 int qemu_accept_wrap(int sockfd, struct sockaddr *addr, 218 socklen_t *addrlen); 219 220 #undef shutdown 221 #define shutdown qemu_shutdown_wrap 222 int qemu_shutdown_wrap(int sockfd, int how); 223 224 #undef ioctlsocket 225 #define ioctlsocket qemu_ioctlsocket_wrap 226 int qemu_ioctlsocket_wrap(int fd, int req, void *val); 227 228 #undef getsockopt 229 #define getsockopt qemu_getsockopt_wrap 230 int qemu_getsockopt_wrap(int sockfd, int level, int optname, 231 void *optval, socklen_t *optlen); 232 233 #undef setsockopt 234 #define setsockopt qemu_setsockopt_wrap 235 int qemu_setsockopt_wrap(int sockfd, int level, int optname, 236 const void *optval, socklen_t optlen); 237 238 #undef getpeername 239 #define getpeername qemu_getpeername_wrap 240 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr, 241 socklen_t *addrlen); 242 243 #undef getsockname 244 #define getsockname qemu_getsockname_wrap 245 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr, 246 socklen_t *addrlen); 247 248 #undef send 249 #define send qemu_send_wrap 250 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags); 251 252 #undef sendto 253 #define sendto qemu_sendto_wrap 254 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags, 255 const struct sockaddr *addr, socklen_t addrlen); 256 257 #undef recv 258 #define recv qemu_recv_wrap 259 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags); 260 261 #undef recvfrom 262 #define recvfrom qemu_recvfrom_wrap 263 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags, 264 struct sockaddr *addr, socklen_t *addrlen); 265 266 EXCEPTION_DISPOSITION 267 win32_close_exception_handler(struct _EXCEPTION_RECORD*, void*, 268 struct _CONTEXT*, void*); 269 270 void *qemu_win32_map_alloc(size_t size, HANDLE *h, Error **errp); 271 void qemu_win32_map_free(void *ptr, HANDLE h, Error **errp); 272 273 #ifdef __cplusplus 274 } 275 #endif 276 277 #endif 278