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