/* * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com> * Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <stdlib.h> #include <string.h> #include <stdio.h> #include <stddef.h> #include <unistd.h> #include <errno.h> #include <ctype.h> #include <fcntl.h> #include <signal.h> #include <syslog.h> #include <getopt.h> #include <sys/signalfd.h> #include "udev.h" static int adm_test(struct udev *udev, int argc, char *argv[]) { int resolve_names = 1; char filename[UTIL_PATH_SIZE]; const char *action = "add"; const char *syspath = NULL; struct udev_event *event = NULL; struct udev_device *dev = NULL; struct udev_rules *rules = NULL; struct udev_list_entry *entry; sigset_t mask, sigmask_orig; int err; int rc = 0; static const struct option options[] = { { "action", required_argument, NULL, 'a' }, { "resolve-names", required_argument, NULL, 'N' }, { "help", no_argument, NULL, 'h' }, {} }; info(udev, "version %s\n", VERSION); for (;;) { int option; option = getopt_long(argc, argv, "a:s:N:fh", options, NULL); if (option == -1) break; dbg(udev, "option '%c'\n", option); switch (option) { case 'a': action = optarg; break; case 'N': if (strcmp (optarg, "early") == 0) { resolve_names = 1; } else if (strcmp (optarg, "late") == 0) { resolve_names = 0; } else if (strcmp (optarg, "never") == 0) { resolve_names = -1; } else { fprintf(stderr, "resolve-names must be early, late or never\n"); err(udev, "resolve-names must be early, late or never\n"); exit(EXIT_FAILURE); } break; case 'h': printf("Usage: udevadm test OPTIONS <syspath>\n" " --action=<string> set action string\n" " --help\n\n"); exit(EXIT_SUCCESS); default: exit(EXIT_FAILURE); } } syspath = argv[optind]; if (syspath == NULL) { fprintf(stderr, "syspath parameter missing\n"); rc = 2; goto out; } printf("This program is for debugging only, it does not run any program,\n" "specified by a RUN key. It may show incorrect results, because\n" "some values may be different, or not available at a simulation run.\n" "\n"); sigprocmask(SIG_SETMASK, NULL, &sigmask_orig); udev_builtin_init(udev); rules = udev_rules_new(udev, resolve_names); if (rules == NULL) { fprintf(stderr, "error reading rules\n"); rc = 3; goto out; } /* add /sys if needed */ if (strncmp(syspath, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) util_strscpyl(filename, sizeof(filename), udev_get_sys_path(udev), syspath, NULL); else util_strscpy(filename, sizeof(filename), syspath); util_remove_trailing_chars(filename, '/'); dev = udev_device_new_from_syspath(udev, filename); if (dev == NULL) { fprintf(stderr, "unable to open device '%s'\n", filename); rc = 4; goto out; } /* skip reading of db, but read kernel parameters */ udev_device_set_info_loaded(dev); udev_device_read_uevent_file(dev); udev_device_set_action(dev, action); event = udev_event_new(dev); sigfillset(&mask); sigprocmask(SIG_SETMASK, &mask, &sigmask_orig); event->fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC); if (event->fd_signal < 0) { fprintf(stderr, "error creating signalfd\n"); rc = 5; goto out; } err = udev_event_execute_rules(event, rules, &sigmask_orig); udev_list_entry_foreach(entry, udev_device_get_properties_list_entry(dev)) printf("%s=%s\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry)); if (err == 0) { udev_list_entry_foreach(entry, udev_list_get_entry(&event->run_list)) { char program[UTIL_PATH_SIZE]; udev_event_apply_format(event, udev_list_entry_get_name(entry), program, sizeof(program)); printf("run: '%s'\n", program); } } out: if (event != NULL && event->fd_signal >= 0) close(event->fd_signal); udev_event_unref(event); udev_device_unref(dev); udev_rules_unref(rules); udev_builtin_exit(udev); return rc; } const struct udevadm_cmd udevadm_test = { .name = "test", .cmd = adm_test, .help = "test an event run", .debug = true, };