Annotation of qemu/os-win32.c, revision 1.1.1.5

1.1       root        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"
                     34: #include "qemu-options.h"
                     35: 
                     36: /***********************************************************/
1.1.1.2   root       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;
1.1.1.4   root       44:         char *string = g_malloc(length);
1.1.1.2   root       45:         snprintf(string, length, "%s=%s", name, value);
                     46:         result = putenv(string);
1.1.1.5 ! root       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);
1.1.1.2   root       54:     }
                     55:     return result;
                     56: }
                     57: 
1.1       root       58: static BOOL WINAPI qemu_ctrl_handler(DWORD type)
                     59: {
1.1.1.5 ! root       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: 
1.1       root       67:     return TRUE;
                     68: }
                     69: 
                     70: void os_setup_early_signal_handling(void)
                     71: {
                     72:     /* Note: cpu_interrupt() is currently not SMP safe, so we force
                     73:        QEMU to run on a single CPU */
                     74:     HANDLE h;
1.1.1.3   root       75:     DWORD_PTR mask, smask;
1.1       root       76:     int i;
                     77: 
                     78:     SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
                     79: 
                     80:     h = GetCurrentProcess();
                     81:     if (GetProcessAffinityMask(h, &mask, &smask)) {
                     82:         for(i = 0; i < 32; i++) {
                     83:             if (mask & (1 << i))
                     84:                 break;
                     85:         }
                     86:         if (i != 32) {
                     87:             mask = 1 << i;
                     88:             SetProcessAffinityMask(h, mask);
                     89:         }
                     90:     }
                     91: }
                     92: 
                     93: /* Look for support files in the same directory as the executable.  */
                     94: char *os_find_datadir(const char *argv0)
                     95: {
                     96:     char *p;
                     97:     char buf[MAX_PATH];
                     98:     DWORD len;
                     99: 
                    100:     len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
                    101:     if (len == 0) {
                    102:         return NULL;
                    103:     }
                    104: 
                    105:     buf[len] = 0;
                    106:     p = buf + len - 1;
                    107:     while (p != buf && *p != '\\')
                    108:         p--;
                    109:     *p = 0;
                    110:     if (access(buf, R_OK) == 0) {
1.1.1.4   root      111:         return g_strdup(buf);
1.1       root      112:     }
                    113:     return NULL;
                    114: }
                    115: 
1.1.1.2   root      116: void os_set_line_buffering(void)
                    117: {
                    118:     setbuf(stdout, NULL);
                    119:     setbuf(stderr, NULL);
                    120: }
                    121: 
1.1       root      122: /*
                    123:  * Parse OS specific command line options.
                    124:  * return 0 if option handled, -1 otherwise
                    125:  */
                    126: void os_parse_cmd_args(int index, const char *optarg)
                    127: {
                    128:     return;
                    129: }
                    130: 
                    131: void os_pidfile_error(void)
                    132: {
                    133:     fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
                    134: }
1.1.1.2   root      135: 
                    136: int qemu_create_pidfile(const char *filename)
                    137: {
                    138:     char buffer[128];
                    139:     int len;
                    140:     HANDLE file;
                    141:     OVERLAPPED overlap;
                    142:     BOOL ret;
                    143:     memset(&overlap, 0, sizeof(overlap));
                    144: 
                    145:     file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1.1.1.4   root      146:                       OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1.1.1.2   root      147: 
                    148:     if (file == INVALID_HANDLE_VALUE) {
                    149:         return -1;
                    150:     }
1.1.1.4   root      151:     len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
                    152:     ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len,
                    153:                     NULL, &overlap);
                    154:     CloseHandle(file);
1.1.1.2   root      155:     if (ret == 0) {
                    156:         return -1;
                    157:     }
                    158:     return 0;
                    159: }

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