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/*
* os-win32.c
*
* Copyright (c) 2003-2008 Fabrice Bellard
* Copyright (c) 2010 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include <windows.h>
#include <mmsystem.h>
#include "sysemu/sysemu.h"
#include "qemu-options.h"
/***********************************************************/
/* Functions missing in mingw */
int setenv(const char *name, const char *value, int overwrite)
{
int result = 0;
if (overwrite || !getenv(name)) {
size_t length = strlen(name) + strlen(value) + 2;
char *string = g_malloc(length);
snprintf(string, length, "%s=%s", name, value);
result = putenv(string);
/* Windows takes a copy and does not continue to use our string.
* Therefore it can be safely freed on this platform. POSIX code
* typically has to leak the string because according to the spec it
* becomes part of the environment.
*/
g_free(string);
}
return result;
}
static BOOL WINAPI qemu_ctrl_handler(DWORD type)
{
qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_SIGNAL);
/* Windows 7 kills application when the function returns.
Sleep here to give QEMU a try for closing.
Sleep period is 10000ms because Windows kills the program
after 10 seconds anyway. */
Sleep(10000);
return TRUE;
}
static TIMECAPS mm_tc;
static void os_undo_timer_resolution(void)
{
timeEndPeriod(mm_tc.wPeriodMin);
}
void os_setup_early_signal_handling(void)
{
SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
timeGetDevCaps(&mm_tc, sizeof(mm_tc));
timeBeginPeriod(mm_tc.wPeriodMin);
atexit(os_undo_timer_resolution);
}
/* Look for support files in the same directory as the executable. */
char *os_find_datadir(void)
{
return qemu_get_exec_dir();
}
void os_set_line_buffering(void)
{
setbuf(stdout, NULL);
setbuf(stderr, NULL);
}
/*
* Parse OS specific command line options.
* return 0 if option handled, -1 otherwise
*/
int os_parse_cmd_args(int index, const char *optarg)
{
return -1;
}
int qemu_create_pidfile(const char *filename)
{
char buffer[128];
int len;
HANDLE file;
OVERLAPPED overlap;
BOOL ret;
memset(&overlap, 0, sizeof(overlap));
file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (file == INVALID_HANDLE_VALUE) {
return -1;
}
len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len,
NULL, &overlap);
CloseHandle(file);
if (ret == 0) {
return -1;
}
return 0;
}
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