qemu-ga: add Windows service integration
This allows qemu-ga to function as a Windows service:
- to install the service (will auto-start on boot):
qemu-ga --service install
- to start the service:
net start qemu-ga
- to stop the service:
net stop qemu-ga
- to uninstall service:
qemu-ga --service uninstall
Original patch by Gal Hammer <ghammer@redhat.com>
diff --git a/qga/service-win32.c b/qga/service-win32.c
new file mode 100644
index 0000000..0905456
--- /dev/null
+++ b/qga/service-win32.c
@@ -0,0 +1,114 @@
+/*
+ * QEMU Guest Agent helpers for win32 service management
+ *
+ * Copyright IBM Corp. 2012
+ *
+ * Authors:
+ * Gal Hammer <ghammer@redhat.com>
+ * Michael Roth <mdroth@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <glib.h>
+#include <windows.h>
+#include "qga/service-win32.h"
+
+static int printf_win_error(const char *text)
+{
+ DWORD err = GetLastError();
+ char *message;
+ int n;
+
+ FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+ FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+ NULL,
+ err,
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+ (char *)&message, 0,
+ NULL);
+ n = printf("%s. (Error: %d) %s", text, err, message);
+ LocalFree(message);
+
+ return n;
+}
+
+int ga_install_service(const char *path, const char *logfile)
+{
+ SC_HANDLE manager;
+ SC_HANDLE service;
+ TCHAR cmdline[MAX_PATH];
+
+ if (GetModuleFileName(NULL, cmdline, MAX_PATH) == 0) {
+ printf_win_error("No full path to service's executable");
+ return EXIT_FAILURE;
+ }
+
+ _snprintf(cmdline, MAX_PATH - strlen(cmdline), "%s -d", cmdline);
+
+ if (path) {
+ _snprintf(cmdline, MAX_PATH - strlen(cmdline), "%s -p %s", cmdline, path);
+ }
+ if (logfile) {
+ _snprintf(cmdline, MAX_PATH - strlen(cmdline), "%s -l %s -v",
+ cmdline, logfile);
+ }
+
+ g_debug("service's cmdline: %s", cmdline);
+
+ manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
+ if (manager == NULL) {
+ printf_win_error("No handle to service control manager");
+ return EXIT_FAILURE;
+ }
+
+ service = CreateService(manager, QGA_SERVICE_NAME, QGA_SERVICE_DISPLAY_NAME,
+ SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START,
+ SERVICE_ERROR_NORMAL, cmdline, NULL, NULL, NULL, NULL, NULL);
+
+ if (service) {
+ SERVICE_DESCRIPTION desc = { (char *)QGA_SERVICE_DESCRIPTION };
+ ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &desc);
+
+ printf("Service was installed successfully.\n");
+ } else {
+ printf_win_error("Failed to install service");
+ }
+
+ CloseServiceHandle(service);
+ CloseServiceHandle(manager);
+
+ return (service == NULL);
+}
+
+int ga_uninstall_service(void)
+{
+ SC_HANDLE manager;
+ SC_HANDLE service;
+
+ manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
+ if (manager == NULL) {
+ printf_win_error("No handle to service control manager");
+ return EXIT_FAILURE;
+ }
+
+ service = OpenService(manager, QGA_SERVICE_NAME, DELETE);
+ if (service == NULL) {
+ printf_win_error("No handle to service");
+ CloseServiceHandle(manager);
+ return EXIT_FAILURE;
+ }
+
+ if (DeleteService(service) == FALSE) {
+ printf_win_error("Failed to delete service");
+ } else {
+ printf("Service was deleted successfully.\n");
+ }
+
+ CloseServiceHandle(service);
+ CloseServiceHandle(manager);
+
+ return EXIT_SUCCESS;
+}
