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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> | |
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 | } |