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 extern int __mingw_setjmp(jmp_buf); 70 extern 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 static inline int os_parse_cmd_args(int index, const char *optarg) { return -1; } 105 void os_set_line_buffering(void); 106 void os_setup_early_signal_handling(void); 107 108 int getpagesize(void); 109 110 #if !defined(EPROTONOSUPPORT) 111 # define EPROTONOSUPPORT EINVAL 112 #endif 113 114 static inline int os_set_daemonize(bool d) 115 { 116 if (d) { 117 return -ENOTSUP; 118 } 119 return 0; 120 } 121 122 static inline bool is_daemonized(void) 123 { 124 return false; 125 } 126 127 static inline int os_mlock(void) 128 { 129 return -ENOSYS; 130 } 131 132 #define fsync _commit 133 134 #if !defined(lseek) 135 # define lseek _lseeki64 136 #endif 137 138 int qemu_ftruncate64(int, int64_t); 139 140 #if !defined(ftruncate) 141 # define ftruncate qemu_ftruncate64 142 #endif 143 144 static inline char *realpath(const char *path, char *resolved_path) 145 { 146 _fullpath(resolved_path, path, _MAX_PATH); 147 return resolved_path; 148 } 149 150 /* 151 * Older versions of MinGW do not import _lock_file and _unlock_file properly. 152 * This was fixed for v6.0.0 with commit b48e3ac8969d. 153 */ 154 static inline void qemu_flockfile(FILE *f) 155 { 156 #ifdef HAVE__LOCK_FILE 157 _lock_file(f); 158 #endif 159 } 160 161 static inline void qemu_funlockfile(FILE *f) 162 { 163 #ifdef HAVE__LOCK_FILE 164 _unlock_file(f); 165 #endif 166 } 167 168 /* Helper for WSAEventSelect, to report errors */ 169 bool qemu_socket_select(int sockfd, WSAEVENT hEventObject, 170 long lNetworkEvents, Error **errp); 171 172 bool qemu_socket_unselect(int sockfd, Error **errp); 173 174 /* We wrap all the sockets functions so that we can set errno based on 175 * WSAGetLastError(), and use file-descriptors instead of SOCKET. 176 */ 177 178 /* 179 * qemu_close_socket_osfhandle: 180 * @fd: a file descriptor associated with a SOCKET 181 * 182 * Close only the C run-time file descriptor, leave the SOCKET opened. 183 * 184 * Returns zero on success. On error, -1 is returned, and errno is set to 185 * indicate the error. 186 */ 187 int qemu_close_socket_osfhandle(int fd); 188 189 #undef close 190 #define close qemu_close_wrap 191 int qemu_close_wrap(int fd); 192 193 #undef connect 194 #define connect qemu_connect_wrap 195 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr, 196 socklen_t addrlen); 197 198 #undef listen 199 #define listen qemu_listen_wrap 200 int qemu_listen_wrap(int sockfd, int backlog); 201 202 #undef bind 203 #define bind qemu_bind_wrap 204 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr, 205 socklen_t addrlen); 206 207 #undef socket 208 #define socket qemu_socket_wrap 209 int qemu_socket_wrap(int domain, int type, int protocol); 210 211 #undef accept 212 #define accept qemu_accept_wrap 213 int qemu_accept_wrap(int sockfd, struct sockaddr *addr, 214 socklen_t *addrlen); 215 216 #undef shutdown 217 #define shutdown qemu_shutdown_wrap 218 int qemu_shutdown_wrap(int sockfd, int how); 219 220 #undef ioctlsocket 221 #define ioctlsocket qemu_ioctlsocket_wrap 222 int qemu_ioctlsocket_wrap(int fd, int req, void *val); 223 224 #undef getsockopt 225 #define getsockopt qemu_getsockopt_wrap 226 int qemu_getsockopt_wrap(int sockfd, int level, int optname, 227 void *optval, socklen_t *optlen); 228 229 #undef setsockopt 230 #define setsockopt qemu_setsockopt_wrap 231 int qemu_setsockopt_wrap(int sockfd, int level, int optname, 232 const void *optval, socklen_t optlen); 233 234 #undef getpeername 235 #define getpeername qemu_getpeername_wrap 236 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr, 237 socklen_t *addrlen); 238 239 #undef getsockname 240 #define getsockname qemu_getsockname_wrap 241 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr, 242 socklen_t *addrlen); 243 244 #undef send 245 #define send qemu_send_wrap 246 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags); 247 248 #undef sendto 249 #define sendto qemu_sendto_wrap 250 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags, 251 const struct sockaddr *addr, socklen_t addrlen); 252 253 #undef recv 254 #define recv qemu_recv_wrap 255 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags); 256 257 #undef recvfrom 258 #define recvfrom qemu_recvfrom_wrap 259 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags, 260 struct sockaddr *addr, socklen_t *addrlen); 261 262 EXCEPTION_DISPOSITION 263 win32_close_exception_handler(struct _EXCEPTION_RECORD*, void*, 264 struct _CONTEXT*, void*); 265 266 #ifdef __cplusplus 267 } 268 #endif 269 270 #endif 271