151 lines
3.9 KiB
C
151 lines
3.9 KiB
C
/*
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* os-win32.c
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2010 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <windows.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <time.h>
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#include <errno.h>
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#include <sys/time.h>
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#include "config-host.h"
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#include "sysemu.h"
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#include "qemu-options.h"
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/***********************************************************/
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/* Functions missing in mingw */
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int setenv(const char *name, const char *value, int overwrite)
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{
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int result = 0;
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if (overwrite || !getenv(name)) {
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size_t length = strlen(name) + strlen(value) + 2;
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char *string = g_malloc(length);
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snprintf(string, length, "%s=%s", name, value);
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result = putenv(string);
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}
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return result;
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}
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static BOOL WINAPI qemu_ctrl_handler(DWORD type)
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{
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exit(STATUS_CONTROL_C_EXIT);
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return TRUE;
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}
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void os_setup_early_signal_handling(void)
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{
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/* Note: cpu_interrupt() is currently not SMP safe, so we force
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QEMU to run on a single CPU */
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HANDLE h;
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DWORD_PTR mask, smask;
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int i;
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SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
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h = GetCurrentProcess();
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if (GetProcessAffinityMask(h, &mask, &smask)) {
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for(i = 0; i < 32; i++) {
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if (mask & (1 << i))
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break;
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}
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if (i != 32) {
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mask = 1 << i;
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SetProcessAffinityMask(h, mask);
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}
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}
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}
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/* Look for support files in the same directory as the executable. */
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char *os_find_datadir(const char *argv0)
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{
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char *p;
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char buf[MAX_PATH];
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DWORD len;
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len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
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if (len == 0) {
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return NULL;
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}
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buf[len] = 0;
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p = buf + len - 1;
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while (p != buf && *p != '\\')
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p--;
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*p = 0;
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if (access(buf, R_OK) == 0) {
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return g_strdup(buf);
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}
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return NULL;
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}
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void os_set_line_buffering(void)
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{
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setbuf(stdout, NULL);
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setbuf(stderr, NULL);
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}
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/*
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* Parse OS specific command line options.
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* return 0 if option handled, -1 otherwise
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*/
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void os_parse_cmd_args(int index, const char *optarg)
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{
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return;
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}
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void os_pidfile_error(void)
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{
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fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
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}
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int qemu_create_pidfile(const char *filename)
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{
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char buffer[128];
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int len;
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HANDLE file;
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OVERLAPPED overlap;
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BOOL ret;
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memset(&overlap, 0, sizeof(overlap));
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file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
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OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
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if (file == INVALID_HANDLE_VALUE) {
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return -1;
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}
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len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
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ret = WriteFileEx(file, (LPCVOID)buffer, (DWORD)len,
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&overlap, NULL);
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if (ret == 0) {
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return -1;
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}
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return 0;
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}
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int qemu_get_thread_id(void)
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{
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return GetCurrentThreadId();
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}
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