/* * 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; }