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19113504 JS |
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 | */ | |
d38ea87a | 25 | #include "qemu/osdep.h" |
19113504 | 26 | #include <windows.h> |
0727b867 | 27 | #include <mmsystem.h> |
9c17d615 | 28 | #include "sysemu/sysemu.h" |
59a5264b | 29 | #include "qemu-options.h" |
19113504 | 30 | |
0a1574bb SW |
31 | /***********************************************************/ |
32 | /* Functions missing in mingw */ | |
33 | ||
34 | int setenv(const char *name, const char *value, int overwrite) | |
35 | { | |
36 | int result = 0; | |
37 | if (overwrite || !getenv(name)) { | |
38 | size_t length = strlen(name) + strlen(value) + 2; | |
7267c094 | 39 | char *string = g_malloc(length); |
0a1574bb SW |
40 | snprintf(string, length, "%s=%s", name, value); |
41 | result = putenv(string); | |
91a9ecef ZHL |
42 | |
43 | /* Windows takes a copy and does not continue to use our string. | |
44 | * Therefore it can be safely freed on this platform. POSIX code | |
45 | * typically has to leak the string because according to the spec it | |
46 | * becomes part of the environment. | |
47 | */ | |
48 | g_free(string); | |
0a1574bb SW |
49 | } |
50 | return result; | |
51 | } | |
52 | ||
69bd73b1 JS |
53 | static BOOL WINAPI qemu_ctrl_handler(DWORD type) |
54 | { | |
cf83f140 | 55 | qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_SIGNAL); |
b75a0282 PD |
56 | /* Windows 7 kills application when the function returns. |
57 | Sleep here to give QEMU a try for closing. | |
58 | Sleep period is 10000ms because Windows kills the program | |
59 | after 10 seconds anyway. */ | |
60 | Sleep(10000); | |
61 | ||
69bd73b1 JS |
62 | return TRUE; |
63 | } | |
64 | ||
0727b867 PB |
65 | static TIMECAPS mm_tc; |
66 | ||
67 | static void os_undo_timer_resolution(void) | |
68 | { | |
69 | timeEndPeriod(mm_tc.wPeriodMin); | |
70 | } | |
71 | ||
fe98ac14 | 72 | void os_setup_early_signal_handling(void) |
69bd73b1 | 73 | { |
69bd73b1 | 74 | SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE); |
0727b867 PB |
75 | timeGetDevCaps(&mm_tc, sizeof(mm_tc)); |
76 | timeBeginPeriod(mm_tc.wPeriodMin); | |
77 | atexit(os_undo_timer_resolution); | |
69bd73b1 | 78 | } |
6170540b JS |
79 | |
80 | /* Look for support files in the same directory as the executable. */ | |
10f5bff6 | 81 | char *os_find_datadir(void) |
6170540b | 82 | { |
10f5bff6 | 83 | return qemu_get_exec_dir(); |
6170540b | 84 | } |
59a5264b | 85 | |
6650b710 SW |
86 | void os_set_line_buffering(void) |
87 | { | |
88 | setbuf(stdout, NULL); | |
89 | setbuf(stderr, NULL); | |
90 | } | |
91 | ||
59a5264b JS |
92 | /* |
93 | * Parse OS specific command line options. | |
94 | * return 0 if option handled, -1 otherwise | |
95 | */ | |
96 | void os_parse_cmd_args(int index, const char *optarg) | |
97 | { | |
98 | return; | |
99 | } | |
eb505be1 | 100 | |
bc4a957c JS |
101 | int qemu_create_pidfile(const char *filename) |
102 | { | |
103 | char buffer[128]; | |
104 | int len; | |
105 | HANDLE file; | |
106 | OVERLAPPED overlap; | |
107 | BOOL ret; | |
108 | memset(&overlap, 0, sizeof(overlap)); | |
109 | ||
110 | file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL, | |
bfc763fc | 111 | OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
bc4a957c JS |
112 | |
113 | if (file == INVALID_HANDLE_VALUE) { | |
114 | return -1; | |
115 | } | |
59ad3403 | 116 | len = snprintf(buffer, sizeof(buffer), "%d\n", getpid()); |
bfc763fc FC |
117 | ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len, |
118 | NULL, &overlap); | |
119 | CloseHandle(file); | |
bc4a957c JS |
120 | if (ret == 0) { |
121 | return -1; | |
122 | } | |
123 | return 0; | |
124 | } |