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 33 #ifdef HAVE_AFUNIX_H 34 #include <afunix.h> 35 #else 36 /* 37 * Fallback definitions of things we need in afunix.h, if not available from 38 * the used Windows SDK or MinGW headers. 39 */ 40 #define UNIX_PATH_MAX 108 41 42 typedef struct sockaddr_un { 43 ADDRESS_FAMILY sun_family; 44 char sun_path[UNIX_PATH_MAX]; 45 } SOCKADDR_UN, *PSOCKADDR_UN; 46 47 #define SIO_AF_UNIX_GETPEERPID _WSAIOR(IOC_VENDOR, 256) 48 #endif 49 50 #ifdef __cplusplus 51 extern "C" { 52 #endif 53 54 #if defined(__aarch64__) 55 /* 56 * On windows-arm64, setjmp is available in only one variant, and longjmp always 57 * does stack unwinding. This crash with generated code. 58 * Thus, we use another implementation of setjmp (not windows one), coming from 59 * mingw, which never performs stack unwinding. 60 */ 61 #undef setjmp 62 #undef longjmp 63 /* 64 * These functions are not declared in setjmp.h because __aarch64__ defines 65 * setjmp to _setjmpex instead. However, they are still defined in libmingwex.a, 66 * which gets linked automatically. 67 */ 68 extern int __mingw_setjmp(jmp_buf); 69 extern void __attribute__((noreturn)) __mingw_longjmp(jmp_buf, int); 70 #define setjmp(env) __mingw_setjmp(env) 71 #define longjmp(env, val) __mingw_longjmp(env, val) 72 #elif defined(_WIN64) 73 /* 74 * On windows-x64, setjmp is implemented by _setjmp which needs a second parameter. 75 * If this parameter is NULL, longjump does no stack unwinding. 76 * That is what we need for QEMU. Passing the value of register rsp (default) 77 * lets longjmp try a stack unwinding which will crash with generated code. 78 */ 79 # undef setjmp 80 # define setjmp(env) _setjmp(env, NULL) 81 #endif /* __aarch64__ */ 82 /* QEMU uses sigsetjmp()/siglongjmp() as the portable way to specify 83 * "longjmp and don't touch the signal masks". Since we know that the 84 * savemask parameter will always be zero we can safely define these 85 * in terms of setjmp/longjmp on Win32. 86 */ 87 #define sigjmp_buf jmp_buf 88 #define sigsetjmp(env, savemask) setjmp(env) 89 #define siglongjmp(env, val) longjmp(env, val) 90 91 /* Missing POSIX functions. Don't use MinGW-w64 macros. */ 92 #ifndef _POSIX_THREAD_SAFE_FUNCTIONS 93 #undef gmtime_r 94 struct tm *gmtime_r(const time_t *timep, struct tm *result); 95 #undef localtime_r 96 struct tm *localtime_r(const time_t *timep, struct tm *result); 97 #endif /* _POSIX_THREAD_SAFE_FUNCTIONS */ 98 99 static inline void os_setup_signal_handling(void) {} 100 static inline void os_daemonize(void) {} 101 static inline void os_setup_post(void) {} 102 static inline void os_set_proc_name(const char *dummy) {} 103 static inline int os_parse_cmd_args(int index, const char *optarg) { return -1; } 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 /* We wrap all the sockets functions so that we can 168 * set errno based on WSAGetLastError() 169 */ 170 171 #undef connect 172 #define connect qemu_connect_wrap 173 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr, 174 socklen_t addrlen); 175 176 #undef listen 177 #define listen qemu_listen_wrap 178 int qemu_listen_wrap(int sockfd, int backlog); 179 180 #undef bind 181 #define bind qemu_bind_wrap 182 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr, 183 socklen_t addrlen); 184 185 #undef socket 186 #define socket qemu_socket_wrap 187 int qemu_socket_wrap(int domain, int type, int protocol); 188 189 #undef accept 190 #define accept qemu_accept_wrap 191 int qemu_accept_wrap(int sockfd, struct sockaddr *addr, 192 socklen_t *addrlen); 193 194 #undef shutdown 195 #define shutdown qemu_shutdown_wrap 196 int qemu_shutdown_wrap(int sockfd, int how); 197 198 #undef ioctlsocket 199 #define ioctlsocket qemu_ioctlsocket_wrap 200 int qemu_ioctlsocket_wrap(int fd, int req, void *val); 201 202 #undef closesocket 203 #define closesocket qemu_closesocket_wrap 204 int qemu_closesocket_wrap(int fd); 205 206 #undef getsockopt 207 #define getsockopt qemu_getsockopt_wrap 208 int qemu_getsockopt_wrap(int sockfd, int level, int optname, 209 void *optval, socklen_t *optlen); 210 211 #undef setsockopt 212 #define setsockopt qemu_setsockopt_wrap 213 int qemu_setsockopt_wrap(int sockfd, int level, int optname, 214 const void *optval, socklen_t optlen); 215 216 #undef getpeername 217 #define getpeername qemu_getpeername_wrap 218 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr, 219 socklen_t *addrlen); 220 221 #undef getsockname 222 #define getsockname qemu_getsockname_wrap 223 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr, 224 socklen_t *addrlen); 225 226 #undef send 227 #define send qemu_send_wrap 228 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags); 229 230 #undef sendto 231 #define sendto qemu_sendto_wrap 232 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags, 233 const struct sockaddr *addr, socklen_t addrlen); 234 235 #undef recv 236 #define recv qemu_recv_wrap 237 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags); 238 239 #undef recvfrom 240 #define recvfrom qemu_recvfrom_wrap 241 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags, 242 struct sockaddr *addr, socklen_t *addrlen); 243 244 #ifdef __cplusplus 245 } 246 #endif 247 248 #endif 249