include/sysemu/os-win32.h

   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 __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 #if defined(_WIN64)
  38 /* On w64, setjmp is implemented by _setjmp which needs a second parameter.
  39  * If this parameter is NULL, longjump does no stack unwinding.
  40  * That is what we need for QEMU. Passing the value of register rsp (default)
  41  * lets longjmp try a stack unwinding which will crash with generated code. */
  42 # undef setjmp
  43 # define setjmp(env) _setjmp(env, NULL)
  44 #endif
  45 /* QEMU uses sigsetjmp()/siglongjmp() as the portable way to specify
  46  * "longjmp and don't touch the signal masks". Since we know that the
  47  * savemask parameter will always be zero we can safely define these
  48  * in terms of setjmp/longjmp on Win32.
  49  */
  50 #define sigjmp_buf jmp_buf
  51 #define sigsetjmp(env, savemask) setjmp(env)
  52 #define siglongjmp(env, val) longjmp(env, val)
  53
  54 /* Missing POSIX functions. Don't use MinGW-w64 macros. */
  55 #ifndef _POSIX_THREAD_SAFE_FUNCTIONS
  56 #undef gmtime_r
  57 struct tm *gmtime_r(const time_t *timep, struct tm *result);
  58 #undef localtime_r
  59 struct tm *localtime_r(const time_t *timep, struct tm *result);
  60 #endif /* _POSIX_THREAD_SAFE_FUNCTIONS */
  61
  62 static inline void os_setup_signal_handling(void) {}
  63 static inline void os_daemonize(void) {}
  64 static inline void os_setup_post(void) {}
  65 static inline void os_set_proc_name(const char *dummy) {}
  66 static inline int os_parse_cmd_args(int index, const char *optarg) { return -1; }
  67 void os_set_line_buffering(void);
  68 void os_setup_early_signal_handling(void);
  69
  70 int getpagesize(void);
  71
  72 #if !defined(EPROTONOSUPPORT)
  73 # define EPROTONOSUPPORT EINVAL
  74 #endif
  75
  76 static inline int os_set_daemonize(bool d)
  77 {
  78     if (d) {
  79         return -ENOTSUP;
  80     }
  81     return 0;
  82 }
  83
  84 static inline bool is_daemonized(void)
  85 {
  86     return false;
  87 }
  88
  89 static inline int os_mlock(void)
  90 {
  91     return -ENOSYS;
  92 }
  93
  94 #define fsync _commit
  95
  96 #if !defined(lseek)
  97 # define lseek _lseeki64
  98 #endif
  99
 100 int qemu_ftruncate64(int, int64_t);
 101
 102 #if !defined(ftruncate)
 103 # define ftruncate qemu_ftruncate64
 104 #endif
 105
 106 static inline char *realpath(const char *path, char *resolved_path)
 107 {
 108     _fullpath(resolved_path, path, _MAX_PATH);
 109     return resolved_path;
 110 }
 111
 112 /*
 113  * Older versions of MinGW do not import _lock_file and _unlock_file properly.
 114  * This was fixed for v6.0.0 with commit b48e3ac8969d.
 115  */
 116 static inline void qemu_flockfile(FILE *f)
 117 {
 118 #ifdef HAVE__LOCK_FILE
 119     _lock_file(f);
 120 #endif
 121 }
 122
 123 static inline void qemu_funlockfile(FILE *f)
 124 {
 125 #ifdef HAVE__LOCK_FILE
 126     _unlock_file(f);
 127 #endif
 128 }
 129
 130 /* We wrap all the sockets functions so that we can
 131  * set errno based on WSAGetLastError()
 132  */
 133
 134 #undef connect
 135 #define connect qemu_connect_wrap
 136 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr,
 137                       socklen_t addrlen);
 138
 139 #undef listen
 140 #define listen qemu_listen_wrap
 141 int qemu_listen_wrap(int sockfd, int backlog);
 142
 143 #undef bind
 144 #define bind qemu_bind_wrap
 145 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr,
 146                    socklen_t addrlen);
 147
 148 #undef socket
 149 #define socket qemu_socket_wrap
 150 int qemu_socket_wrap(int domain, int type, int protocol);
 151
 152 #undef accept
 153 #define accept qemu_accept_wrap
 154 int qemu_accept_wrap(int sockfd, struct sockaddr *addr,
 155                      socklen_t *addrlen);
 156
 157 #undef shutdown
 158 #define shutdown qemu_shutdown_wrap
 159 int qemu_shutdown_wrap(int sockfd, int how);
 160
 161 #undef ioctlsocket
 162 #define ioctlsocket qemu_ioctlsocket_wrap
 163 int qemu_ioctlsocket_wrap(int fd, int req, void *val);
 164
 165 #undef closesocket
 166 #define closesocket qemu_closesocket_wrap
 167 int qemu_closesocket_wrap(int fd);
 168
 169 #undef getsockopt
 170 #define getsockopt qemu_getsockopt_wrap
 171 int qemu_getsockopt_wrap(int sockfd, int level, int optname,
 172                          void *optval, socklen_t *optlen);
 173
 174 #undef setsockopt
 175 #define setsockopt qemu_setsockopt_wrap
 176 int qemu_setsockopt_wrap(int sockfd, int level, int optname,
 177                          const void *optval, socklen_t optlen);
 178
 179 #undef getpeername
 180 #define getpeername qemu_getpeername_wrap
 181 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr,
 182                           socklen_t *addrlen);
 183
 184 #undef getsockname
 185 #define getsockname qemu_getsockname_wrap
 186 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr,
 187                           socklen_t *addrlen);
 188
 189 #undef send
 190 #define send qemu_send_wrap
 191 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags);
 192
 193 #undef sendto
 194 #define sendto qemu_sendto_wrap
 195 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags,
 196                          const struct sockaddr *addr, socklen_t addrlen);
 197
 198 #undef recv
 199 #define recv qemu_recv_wrap
 200 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags);
 201
 202 #undef recvfrom
 203 #define recvfrom qemu_recvfrom_wrap
 204 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags,
 205                            struct sockaddr *addr, socklen_t *addrlen);
 206
 207 #ifdef __cplusplus
 208 }
 209 #endif
 210
 211 #endif