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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 <unistd.h>
27#include <fcntl.h>
28#include <signal.h>
29#include <time.h>
30#include <errno.h>
31#include <sys/time.h>
32#include "config-host.h"
33#include "sysemu.h"
59a5264b 34#include "qemu-options.h"
19113504 35
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36/***********************************************************/
37/* Functions missing in mingw */
38
39int 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;
7267c094 44 char *string = g_malloc(length);
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45 snprintf(string, length, "%s=%s", name, value);
46 result = putenv(string);
47 }
48 return result;
49}
50
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51static BOOL WINAPI qemu_ctrl_handler(DWORD type)
52{
53 exit(STATUS_CONTROL_C_EXIT);
54 return TRUE;
55}
56
fe98ac14 57void os_setup_early_signal_handling(void)
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58{
59 /* Note: cpu_interrupt() is currently not SMP safe, so we force
60 QEMU to run on a single CPU */
61 HANDLE h;
f45a1108 62 DWORD_PTR mask, smask;
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63 int i;
64
65 SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
66
67 h = GetCurrentProcess();
68 if (GetProcessAffinityMask(h, &mask, &smask)) {
69 for(i = 0; i < 32; i++) {
70 if (mask & (1 << i))
71 break;
72 }
73 if (i != 32) {
74 mask = 1 << i;
75 SetProcessAffinityMask(h, mask);
76 }
77 }
78}
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79
80/* Look for support files in the same directory as the executable. */
81char *os_find_datadir(const char *argv0)
82{
83 char *p;
84 char buf[MAX_PATH];
85 DWORD len;
86
87 len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
88 if (len == 0) {
89 return NULL;
90 }
91
92 buf[len] = 0;
93 p = buf + len - 1;
94 while (p != buf && *p != '\\')
95 p--;
96 *p = 0;
97 if (access(buf, R_OK) == 0) {
7267c094 98 return g_strdup(buf);
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99 }
100 return NULL;
101}
59a5264b 102
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103void os_set_line_buffering(void)
104{
105 setbuf(stdout, NULL);
106 setbuf(stderr, NULL);
107}
108
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109/*
110 * Parse OS specific command line options.
111 * return 0 if option handled, -1 otherwise
112 */
113void os_parse_cmd_args(int index, const char *optarg)
114{
115 return;
116}
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117
118void os_pidfile_error(void)
119{
120 fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
121}
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122
123int qemu_create_pidfile(const char *filename)
124{
125 char buffer[128];
126 int len;
127 HANDLE file;
128 OVERLAPPED overlap;
129 BOOL ret;
130 memset(&overlap, 0, sizeof(overlap));
131
132 file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
bfc763fc 133 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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134
135 if (file == INVALID_HANDLE_VALUE) {
136 return -1;
137 }
59ad3403 138 len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
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139 ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len,
140 NULL, &overlap);
141 CloseHandle(file);
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142 if (ret == 0) {
143 return -1;
144 }
145 return 0;
146}
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147
148int qemu_get_thread_id(void)
149{
150 return GetCurrentThreadId();
151}