From 108365fdb0042454413d2610ffe7194003ba4ae9 Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Wed, 3 Jul 2013 15:14:09 +0200 Subject: ga_install_service(): nest error paths more idiomatically Acked-by: Michael Roth Reviewed-by: Eric Blake Signed-off-by: Laszlo Ersek Signed-off-by: Michael Roth --- qga/service-win32.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) (limited to 'qga') diff --git a/qga/service-win32.c b/qga/service-win32.c index 6de8be4..1cf81fc 100644 --- a/qga/service-win32.c +++ b/qga/service-win32.c @@ -38,10 +38,12 @@ static int printf_win_error(const char *text) int ga_install_service(const char *path, const char *logfile, const char *state_dir) { + int ret = EXIT_FAILURE; SC_HANDLE manager; SC_HANDLE service; TCHAR module_fname[MAX_PATH]; GString *cmdline; + SERVICE_DESCRIPTION desc = { (char *)QGA_SERVICE_DESCRIPTION }; if (GetModuleFileName(NULL, module_fname, MAX_PATH) == 0) { printf_win_error("No full path to service's executable"); @@ -66,28 +68,28 @@ int ga_install_service(const char *path, const char *logfile, manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS); if (manager == NULL) { printf_win_error("No handle to service control manager"); - g_string_free(cmdline, TRUE); - return EXIT_FAILURE; + goto out_strings; } service = CreateService(manager, QGA_SERVICE_NAME, QGA_SERVICE_DISPLAY_NAME, SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL, cmdline->str, NULL, NULL, NULL, NULL, NULL); - - if (service) { - SERVICE_DESCRIPTION desc = { (char *)QGA_SERVICE_DESCRIPTION }; - ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &desc); - - fprintf(stderr, "Service was installed successfully.\n"); - } else { + if (service == NULL) { printf_win_error("Failed to install service"); + goto out_manager; } + ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &desc); + fprintf(stderr, "Service was installed successfully.\n"); + ret = EXIT_SUCCESS; CloseServiceHandle(service); + +out_manager: CloseServiceHandle(manager); +out_strings: g_string_free(cmdline, TRUE); - return (service == NULL); + return ret; } int ga_uninstall_service(void) -- cgit v1.1