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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>
0727b867 26#include <mmsystem.h>
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27#include <unistd.h>
28#include <fcntl.h>
29#include <signal.h>
30#include <time.h>
31#include <errno.h>
32#include <sys/time.h>
33#include "config-host.h"
9c17d615 34#include "sysemu/sysemu.h"
59a5264b 35#include "qemu-options.h"
19113504 36
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37/***********************************************************/
38/* Functions missing in mingw */
39
40int setenv(const char *name, const char *value, int overwrite)
41{
42 int result = 0;
43 if (overwrite || !getenv(name)) {
44 size_t length = strlen(name) + strlen(value) + 2;
7267c094 45 char *string = g_malloc(length);
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46 snprintf(string, length, "%s=%s", name, value);
47 result = putenv(string);
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48
49 /* Windows takes a copy and does not continue to use our string.
50 * Therefore it can be safely freed on this platform. POSIX code
51 * typically has to leak the string because according to the spec it
52 * becomes part of the environment.
53 */
54 g_free(string);
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55 }
56 return result;
57}
58
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59static BOOL WINAPI qemu_ctrl_handler(DWORD type)
60{
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61 qemu_system_shutdown_request();
62 /* Windows 7 kills application when the function returns.
63 Sleep here to give QEMU a try for closing.
64 Sleep period is 10000ms because Windows kills the program
65 after 10 seconds anyway. */
66 Sleep(10000);
67
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68 return TRUE;
69}
70
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71static TIMECAPS mm_tc;
72
73static void os_undo_timer_resolution(void)
74{
75 timeEndPeriod(mm_tc.wPeriodMin);
76}
77
fe98ac14 78void os_setup_early_signal_handling(void)
69bd73b1 79{
69bd73b1 80 SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
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81 timeGetDevCaps(&mm_tc, sizeof(mm_tc));
82 timeBeginPeriod(mm_tc.wPeriodMin);
83 atexit(os_undo_timer_resolution);
69bd73b1 84}
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85
86/* Look for support files in the same directory as the executable. */
10f5bff6 87char *os_find_datadir(void)
6170540b 88{
10f5bff6 89 return qemu_get_exec_dir();
6170540b 90}
59a5264b 91
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92void os_set_line_buffering(void)
93{
94 setbuf(stdout, NULL);
95 setbuf(stderr, NULL);
96}
97
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98/*
99 * Parse OS specific command line options.
100 * return 0 if option handled, -1 otherwise
101 */
102void os_parse_cmd_args(int index, const char *optarg)
103{
104 return;
105}
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106
107void os_pidfile_error(void)
108{
109 fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
110}
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111
112int qemu_create_pidfile(const char *filename)
113{
114 char buffer[128];
115 int len;
116 HANDLE file;
117 OVERLAPPED overlap;
118 BOOL ret;
119 memset(&overlap, 0, sizeof(overlap));
120
121 file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
bfc763fc 122 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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123
124 if (file == INVALID_HANDLE_VALUE) {
125 return -1;
126 }
59ad3403 127 len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
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128 ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len,
129 NULL, &overlap);
130 CloseHandle(file);
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131 if (ret == 0) {
132 return -1;
133 }
134 return 0;
135}