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