1 /* 2 * os-win32.c 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * Copyright (c) 2010 Red Hat, Inc. 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 #include <windows.h> 26 #include <mmsystem.h> 27 #include <unistd.h> 28 #include <fcntl.h> 29 #include <time.h> 30 #include <errno.h> 31 #include <sys/time.h> 32 #include "config-host.h" 33 #include "sysemu/sysemu.h" 34 #include "qemu-options.h" 35 36 /***********************************************************/ 37 /* Functions missing in mingw */ 38 39 int setenv(const char *name, const char *value, int overwrite) 40 { 41 int result = 0; 42 if (overwrite || !getenv(name)) { 43 size_t length = strlen(name) + strlen(value) + 2; 44 char *string = g_malloc(length); 45 snprintf(string, length, "%s=%s", name, value); 46 result = putenv(string); 47 48 /* Windows takes a copy and does not continue to use our string. 49 * Therefore it can be safely freed on this platform. POSIX code 50 * typically has to leak the string because according to the spec it 51 * becomes part of the environment. 52 */ 53 g_free(string); 54 } 55 return result; 56 } 57 58 static BOOL WINAPI qemu_ctrl_handler(DWORD type) 59 { 60 qemu_system_shutdown_request(); 61 /* Windows 7 kills application when the function returns. 62 Sleep here to give QEMU a try for closing. 63 Sleep period is 10000ms because Windows kills the program 64 after 10 seconds anyway. */ 65 Sleep(10000); 66 67 return TRUE; 68 } 69 70 static TIMECAPS mm_tc; 71 72 static void os_undo_timer_resolution(void) 73 { 74 timeEndPeriod(mm_tc.wPeriodMin); 75 } 76 77 void os_setup_early_signal_handling(void) 78 { 79 SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE); 80 timeGetDevCaps(&mm_tc, sizeof(mm_tc)); 81 timeBeginPeriod(mm_tc.wPeriodMin); 82 atexit(os_undo_timer_resolution); 83 } 84 85 /* Look for support files in the same directory as the executable. */ 86 char *os_find_datadir(void) 87 { 88 return qemu_get_exec_dir(); 89 } 90 91 void os_set_line_buffering(void) 92 { 93 setbuf(stdout, NULL); 94 setbuf(stderr, NULL); 95 } 96 97 /* 98 * Parse OS specific command line options. 99 * return 0 if option handled, -1 otherwise 100 */ 101 void os_parse_cmd_args(int index, const char *optarg) 102 { 103 return; 104 } 105 106 int qemu_create_pidfile(const char *filename) 107 { 108 char buffer[128]; 109 int len; 110 HANDLE file; 111 OVERLAPPED overlap; 112 BOOL ret; 113 memset(&overlap, 0, sizeof(overlap)); 114 115 file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL, 116 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); 117 118 if (file == INVALID_HANDLE_VALUE) { 119 return -1; 120 } 121 len = snprintf(buffer, sizeof(buffer), "%d\n", getpid()); 122 ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len, 123 NULL, &overlap); 124 CloseHandle(file); 125 if (ret == 0) { 126 return -1; 127 } 128 return 0; 129 } 130