src/udev/udevadm-test.c

   1 /*
   2  * Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
   3  * Copyright (C) 2004-2008 Kay Sievers <kay@vrfy.org>
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <errno.h>
  20 #include <getopt.h>
  21 #include <signal.h>
  22 #include <stddef.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <sys/signalfd.h>
  26 #include <unistd.h>
  27
  28 #include "string-util.h"
  29 #include "udev-util.h"
  30 #include "udev.h"
  31
  32 static void help(void) {
  33
  34         printf("%s test OPTIONS <syspath>\n\n"
  35                "Test an event run.\n"
  36                "  -h --help                            Show this help\n"
  37                "     --version                         Show package version\n"
  38                "  -a --action=ACTION                   Set action string\n"
  39                "  -N --resolve-names=early|late|never  When to resolve names\n"
  40                , program_invocation_short_name);
  41 }
  42
  43 static int adm_test(struct udev *udev, int argc, char *argv[]) {
  44         int resolve_names = 1;
  45         char filename[UTIL_PATH_SIZE];
  46         const char *action = "add";
  47         const char *syspath = NULL;
  48         struct udev_list_entry *entry;
  49         _cleanup_udev_rules_unref_ struct udev_rules *rules = NULL;
  50         _cleanup_udev_device_unref_ struct udev_device *dev = NULL;
  51         _cleanup_udev_event_unref_ struct udev_event *event = NULL;
  52         sigset_t mask, sigmask_orig;
  53         int rc = 0, c;
  54
  55         static const struct option options[] = {
  56                 { "action", required_argument, NULL, 'a' },
  57                 { "resolve-names", required_argument, NULL, 'N' },
  58                 { "help", no_argument, NULL, 'h' },
  59                 {}
  60         };
  61
  62         log_debug("version %s", VERSION);
  63
  64         while((c = getopt_long(argc, argv, "a:N:h", options, NULL)) >= 0)
  65                 switch (c) {
  66                 case 'a':
  67                         action = optarg;
  68                         break;
  69                 case 'N':
  70                         if (streq (optarg, "early")) {
  71                                 resolve_names = 1;
  72                         } else if (streq (optarg, "late")) {
  73                                 resolve_names = 0;
  74                         } else if (streq (optarg, "never")) {
  75                                 resolve_names = -1;
  76                         } else {
  77                                 fprintf(stderr, "resolve-names must be early, late or never\n");
  78                                 log_error("resolve-names must be early, late or never");
  79                                 exit(EXIT_FAILURE);
  80                         }
  81                         break;
  82                 case 'h':
  83                         help();
  84                         exit(EXIT_SUCCESS);
  85                 case '?':
  86                         exit(EXIT_FAILURE);
  87                 default:
  88                         assert_not_reached("Unknown option");
  89                 }
  90
  91         syspath = argv[optind];
  92         if (syspath == NULL) {
  93                 fprintf(stderr, "syspath parameter missing\n");
  94                 rc = 2;
  95                 goto out;
  96         }
  97
  98         printf("This program is for debugging only, it does not run any program\n"
  99                "specified by a RUN key. It may show incorrect results, because\n"
 100                "some values may be different, or not available at a simulation run.\n"
 101                "\n");
 102
 103         sigprocmask(SIG_SETMASK, NULL, &sigmask_orig);
 104
 105         udev_builtin_init(udev);
 106
 107         rules = udev_rules_new(udev, resolve_names);
 108         if (rules == NULL) {
 109                 fprintf(stderr, "error reading rules\n");
 110                 rc = 3;
 111                 goto out;
 112         }
 113
 114         /* add /sys if needed */
 115         if (!startswith(syspath, "/sys"))
 116                 strscpyl(filename, sizeof(filename), "/sys", syspath, NULL);
 117         else
 118                 strscpy(filename, sizeof(filename), syspath);
 119         util_remove_trailing_chars(filename, '/');
 120
 121         dev = udev_device_new_from_synthetic_event(udev, filename, action);
 122         if (dev == NULL) {
 123                 fprintf(stderr, "unable to open device '%s'\n", filename);
 124                 rc = 4;
 125                 goto out;
 126         }
 127
 128         /* don't read info from the db */
 129         udev_device_set_info_loaded(dev);
 130
 131         event = udev_event_new(dev);
 132
 133         sigfillset(&mask);
 134         sigprocmask(SIG_SETMASK, &mask, &sigmask_orig);
 135
 136         udev_event_execute_rules(event,
 137                                  60 * USEC_PER_SEC, 20 * USEC_PER_SEC,
 138                                  NULL,
 139                                  rules);
 140
 141         udev_list_entry_foreach(entry, udev_device_get_properties_list_entry(dev))
 142                 printf("%s=%s\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry));
 143
 144         udev_list_entry_foreach(entry, udev_list_get_entry(&event->run_list)) {
 145                 char program[UTIL_PATH_SIZE];
 146
 147                 udev_event_apply_format(event, udev_list_entry_get_name(entry), program, sizeof(program));
 148                 printf("run: '%s'\n", program);
 149         }
 150 out:
 151         udev_builtin_exit(udev);
 152         return rc;
 153 }
 154
 155 const struct udevadm_cmd udevadm_test = {
 156         .name = "test",
 157         .cmd = adm_test,
 158         .help = "Test an event run",
 159         .debug = true,
 160 };