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 void os_set_line_buffering(void);
  66 static inline void os_set_proc_name(const char *dummy) {}
  67
  68 int getpagesize(void);
  69
  70 #if !defined(EPROTONOSUPPORT)
  71 # define EPROTONOSUPPORT EINVAL
  72 #endif
  73
  74 typedef struct {
  75     long tv_sec;
  76     long tv_usec;
  77 } qemu_timeval;
  78 int qemu_gettimeofday(qemu_timeval *tp);
  79
  80 static inline int os_set_daemonize(bool d)
  81 {
  82     if (d) {
  83         return -ENOTSUP;
  84     }
  85     return 0;
  86 }
  87
  88 static inline bool is_daemonized(void)
  89 {
  90     return false;
  91 }
  92
  93 static inline int os_mlock(void)
  94 {
  95     return -ENOSYS;
  96 }
  97
  98 #define fsync _commit
  99
 100 #if !defined(lseek)
 101 # define lseek _lseeki64
 102 #endif
 103
 104 int qemu_ftruncate64(int, int64_t);
 105
 106 #if !defined(ftruncate)
 107 # define ftruncate qemu_ftruncate64
 108 #endif
 109
 110 static inline char *realpath(const char *path, char *resolved_path)
 111 {
 112     _fullpath(resolved_path, path, _MAX_PATH);
 113     return resolved_path;
 114 }
 115
 116 /* ??? Mingw appears to export _lock_file and _unlock_file as the functions
 117  * with which to lock a stdio handle.  But something is wrong in the markup,
 118  * either in the header or the library, such that we get undefined references
 119  * to "_imp___lock_file" etc when linking.  Since we seem to have no other
 120  * alternative, and the usage within the logging functions isn't critical,
 121  * ignore FILE locking.
 122  */
 123
 124 static inline void qemu_flockfile(FILE *f)
 125 {
 126 }
 127
 128 static inline void qemu_funlockfile(FILE *f)
 129 {
 130 }
 131
 132 /* We wrap all the sockets functions so that we can
 133  * set errno based on WSAGetLastError()
 134  */
 135
 136 #undef connect
 137 #define connect qemu_connect_wrap
 138 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr,
 139                       socklen_t addrlen);
 140
 141 #undef listen
 142 #define listen qemu_listen_wrap
 143 int qemu_listen_wrap(int sockfd, int backlog);
 144
 145 #undef bind
 146 #define bind qemu_bind_wrap
 147 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr,
 148                    socklen_t addrlen);
 149
 150 #undef socket
 151 #define socket qemu_socket_wrap
 152 int qemu_socket_wrap(int domain, int type, int protocol);
 153
 154 #undef accept
 155 #define accept qemu_accept_wrap
 156 int qemu_accept_wrap(int sockfd, struct sockaddr *addr,
 157                      socklen_t *addrlen);
 158
 159 #undef shutdown
 160 #define shutdown qemu_shutdown_wrap
 161 int qemu_shutdown_wrap(int sockfd, int how);
 162
 163 #undef ioctlsocket
 164 #define ioctlsocket qemu_ioctlsocket_wrap
 165 int qemu_ioctlsocket_wrap(int fd, int req, void *val);
 166
 167 #undef closesocket
 168 #define closesocket qemu_closesocket_wrap
 169 int qemu_closesocket_wrap(int fd);
 170
 171 #undef getsockopt
 172 #define getsockopt qemu_getsockopt_wrap
 173 int qemu_getsockopt_wrap(int sockfd, int level, int optname,
 174                          void *optval, socklen_t *optlen);
 175
 176 #undef setsockopt
 177 #define setsockopt qemu_setsockopt_wrap
 178 int qemu_setsockopt_wrap(int sockfd, int level, int optname,
 179                          const void *optval, socklen_t optlen);
 180
 181 #undef getpeername
 182 #define getpeername qemu_getpeername_wrap
 183 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr,
 184                           socklen_t *addrlen);
 185
 186 #undef getsockname
 187 #define getsockname qemu_getsockname_wrap
 188 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr,
 189                           socklen_t *addrlen);
 190
 191 #undef send
 192 #define send qemu_send_wrap
 193 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags);
 194
 195 #undef sendto
 196 #define sendto qemu_sendto_wrap
 197 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags,
 198                          const struct sockaddr *addr, socklen_t addrlen);
 199
 200 #undef recv
 201 #define recv qemu_recv_wrap
 202 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags);
 203
 204 #undef recvfrom
 205 #define recvfrom qemu_recvfrom_wrap
 206 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags,
 207                            struct sockaddr *addr, socklen_t *addrlen);
 208
 209 #ifdef __cplusplus
 210 }
 211 #endif
 212
 213 #endif