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 <windows.h>
  30 #include <winsock2.h>
  31
  32 #if defined(_WIN64)
  33 /* MinGW-w64 has a 32 bit off_t, but we want 64 bit off_t. */
  34 # define off_t off64_t
  35
  36 /* MinGW-w64 stdio.h defines SYS_OPEN. Allow a redefinition in arm-semi.c. */
  37 # undef SYS_OPEN
  38 #endif
  39
  40 /* Workaround for older versions of MinGW. */
  41 #ifndef ECONNREFUSED
  42 # define ECONNREFUSED WSAECONNREFUSED
  43 #endif
  44 #ifndef EINPROGRESS
  45 # define EINPROGRESS  WSAEINPROGRESS
  46 #endif
  47 #ifndef EHOSTUNREACH
  48 # define EHOSTUNREACH WSAEHOSTUNREACH
  49 #endif
  50 #ifndef EINTR
  51 # define EINTR        WSAEINTR
  52 #endif
  53 #ifndef EINPROGRESS
  54 # define EINPROGRESS  WSAEINPROGRESS
  55 #endif
  56 #ifndef ENETUNREACH
  57 # define ENETUNREACH  WSAENETUNREACH
  58 #endif
  59 #ifndef ENOTCONN
  60 # define ENOTCONN     WSAENOTCONN
  61 #endif
  62 #ifndef EWOULDBLOCK
  63 # define EWOULDBLOCK  WSAEWOULDBLOCK
  64 #endif
  65
  66 #if defined(_WIN64)
  67 /* On w64, setjmp is implemented by _setjmp which needs a second parameter.
  68  * If this parameter is NULL, longjump does no stack unwinding.
  69  * That is what we need for QEMU. Passing the value of register rsp (default)
  70  * lets longjmp try a stack unwinding which will crash with generated code. */
  71 # undef setjmp
  72 # define setjmp(env) _setjmp(env, NULL)
  73 #endif
  74 /* QEMU uses sigsetjmp()/siglongjmp() as the portable way to specify
  75  * "longjmp and don't touch the signal masks". Since we know that the
  76  * savemask parameter will always be zero we can safely define these
  77  * in terms of setjmp/longjmp on Win32.
  78  */
  79 #define sigjmp_buf jmp_buf
  80 #define sigsetjmp(env, savemask) setjmp(env)
  81 #define siglongjmp(env, val) longjmp(env, val)
  82
  83 /* Missing POSIX functions. Don't use MinGW-w64 macros. */
  84 #undef gmtime_r
  85 struct tm *gmtime_r(const time_t *timep, struct tm *result);
  86 #undef localtime_r
  87 struct tm *localtime_r(const time_t *timep, struct tm *result);
  88
  89
  90 static inline void os_setup_signal_handling(void) {}
  91 static inline void os_daemonize(void) {}
  92 static inline void os_setup_post(void) {}
  93 void os_set_line_buffering(void);
  94 static inline void os_set_proc_name(const char *dummy) {}
  95
  96 size_t getpagesize(void);
  97
  98 #if !defined(EPROTONOSUPPORT)
  99 # define EPROTONOSUPPORT EINVAL
 100 #endif
 101
 102 int setenv(const char *name, const char *value, int overwrite);
 103
 104 typedef struct {
 105     long tv_sec;
 106     long tv_usec;
 107 } qemu_timeval;
 108 int qemu_gettimeofday(qemu_timeval *tp);
 109
 110 static inline bool is_daemonized(void)
 111 {
 112     return false;
 113 }
 114
 115 static inline int os_mlock(void)
 116 {
 117     return -ENOSYS;
 118 }
 119
 120 #define fsync _commit
 121
 122 #if !defined(lseek)
 123 # define lseek _lseeki64
 124 #endif
 125
 126 int qemu_ftruncate64(int, int64_t);
 127
 128 #if !defined(ftruncate)
 129 # define ftruncate qemu_ftruncate64
 130 #endif
 131
 132 static inline char *realpath(const char *path, char *resolved_path)
 133 {
 134     _fullpath(resolved_path, path, _MAX_PATH);
 135     return resolved_path;
 136 }
 137
 138 #endif