util/oslib-win32.c

   1 /*
   2  * os-win32.c
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  * Copyright (c) 2010 Red Hat, Inc.
   6  *
   7  * QEMU library functions for win32 which are shared between QEMU and
   8  * the QEMU tools.
   9  *
  10  * Permission is hereby granted, free of charge, to any person obtaining a copy
  11  * of this software and associated documentation files (the "Software"), to deal
  12  * in the Software without restriction, including without limitation the rights
  13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14  * copies of the Software, and to permit persons to whom the Software is
  15  * furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be included in
  18  * all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  23  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  26  * THE SOFTWARE.
  27  */
  28 #include <windows.h>
  29 #include <glib.h>
  30 #include <stdlib.h>
  31 #include "config-host.h"
  32 #include "sysemu/sysemu.h"
  33 #include "qemu/main-loop.h"
  34 #include "trace.h"
  35 #include "qemu/sockets.h"
  36
  37 /* this must come after including "trace.h" */
  38 #include <shlobj.h>
  39
  40 void *qemu_oom_check(void *ptr)
  41 {
  42     if (ptr == NULL) {
  43         fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
  44         abort();
  45     }
  46     return ptr;
  47 }
  48
  49 void *qemu_memalign(size_t alignment, size_t size)
  50 {
  51     void *ptr;
  52
  53     if (!size) {
  54         abort();
  55     }
  56     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
  57     trace_qemu_memalign(alignment, size, ptr);
  58     return ptr;
  59 }
  60
  61 void *qemu_anon_ram_alloc(size_t size)
  62 {
  63     void *ptr;
  64
  65     /* FIXME: this is not exactly optimal solution since VirtualAlloc
  66        has 64Kb granularity, but at least it guarantees us that the
  67        memory is page aligned. */
  68     if (!size) {
  69         abort();
  70     }
  71     ptr = qemu_oom_check(VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE));
  72     trace_qemu_anon_ram_alloc(size, ptr);
  73     return ptr;
  74 }
  75
  76 void qemu_vfree(void *ptr)
  77 {
  78     trace_qemu_vfree(ptr);
  79     if (ptr) {
  80         VirtualFree(ptr, 0, MEM_RELEASE);
  81     }
  82 }
  83
  84 void qemu_anon_ram_free(void *ptr, size_t size)
  85 {
  86     trace_qemu_anon_ram_free(ptr, size);
  87     if (ptr) {
  88         VirtualFree(ptr, 0, MEM_RELEASE);
  89     }
  90 }
  91
  92 /* FIXME: add proper locking */
  93 struct tm *gmtime_r(const time_t *timep, struct tm *result)
  94 {
  95     struct tm *p = gmtime(timep);
  96     memset(result, 0, sizeof(*result));
  97     if (p) {
  98         *result = *p;
  99         p = result;
 100     }
 101     return p;
 102 }
 103
 104 /* FIXME: add proper locking */
 105 struct tm *localtime_r(const time_t *timep, struct tm *result)
 106 {
 107     struct tm *p = localtime(timep);
 108     memset(result, 0, sizeof(*result));
 109     if (p) {
 110         *result = *p;
 111         p = result;
 112     }
 113     return p;
 114 }
 115
 116 void qemu_set_block(int fd)
 117 {
 118     unsigned long opt = 0;
 119     WSAEventSelect(fd, NULL, 0);
 120     ioctlsocket(fd, FIONBIO, &opt);
 121 }
 122
 123 void qemu_set_nonblock(int fd)
 124 {
 125     unsigned long opt = 1;
 126     ioctlsocket(fd, FIONBIO, &opt);
 127     qemu_fd_register(fd);
 128 }
 129
 130 int inet_aton(const char *cp, struct in_addr *ia)
 131 {
 132     uint32_t addr = inet_addr(cp);
 133     if (addr == 0xffffffff) {
 134         return 0;
 135     }
 136     ia->s_addr = addr;
 137     return 1;
 138 }
 139
 140 void qemu_set_cloexec(int fd)
 141 {
 142 }
 143
 144 /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
 145 #define _W32_FT_OFFSET (116444736000000000ULL)
 146
 147 int qemu_gettimeofday(qemu_timeval *tp)
 148 {
 149   union {
 150     unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
 151     FILETIME ft;
 152   }  _now;
 153
 154   if(tp) {
 155       GetSystemTimeAsFileTime (&_now.ft);
 156       tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
 157       tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
 158   }
 159   /* Always return 0 as per Open Group Base Specifications Issue 6.
 160      Do not set errno on error.  */
 161   return 0;
 162 }
 163
 164 int qemu_get_thread_id(void)
 165 {
 166     return GetCurrentThreadId();
 167 }
 168
 169 char *
 170 qemu_get_local_state_pathname(const char *relative_pathname)
 171 {
 172     HRESULT result;
 173     char base_path[MAX_PATH+1] = "";
 174
 175     result = SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL,
 176                              /* SHGFP_TYPE_CURRENT */ 0, base_path);
 177     if (result != S_OK) {
 178         /* misconfigured environment */
 179         g_critical("CSIDL_COMMON_APPDATA unavailable: %ld", (long)result);
 180         abort();
 181     }
 182     return g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", base_path,
 183                            relative_pathname);
 184 }