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