udev/udevadm-test-builtin.c

   1 /*
   2  * Copyright (C) 2011 Kay Sievers <kay.sievers@vrfy.org>
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <stdlib.h>
  19 #include <stddef.h>
  20 #include <string.h>
  21 #include <stdio.h>
  22 #include <unistd.h>
  23 #include <errno.h>
  24 #include <dirent.h>
  25 #include <fcntl.h>
  26 #include <syslog.h>
  27 #include <getopt.h>
  28 #include <signal.h>
  29 #include <time.h>
  30 #include <sys/inotify.h>
  31 #include <sys/poll.h>
  32 #include <sys/stat.h>
  33 #include <sys/types.h>
  34
  35 #include "udev.h"
  36
  37 static void help(struct udev *udev)
  38 {
  39         fprintf(stderr, "\n");
  40         fprintf(stderr, "Usage: udevadm builtin [--help] <command> <syspath>\n");
  41         udev_builtin_list(udev);
  42         fprintf(stderr, "\n");
  43 }
  44
  45 static int adm_builtin(struct udev *udev, int argc, char *argv[])
  46 {
  47         static const struct option options[] = {
  48                 { "help", no_argument, NULL, 'h' },
  49                 {}
  50         };
  51         char *command = NULL;
  52         char *syspath = NULL;
  53         char filename[UTIL_PATH_SIZE];
  54         struct udev_device *dev = NULL;
  55         enum udev_builtin_cmd cmd;
  56         int rc = EXIT_SUCCESS;
  57
  58         dbg(udev, "version %s\n", VERSION);
  59
  60         for (;;) {
  61                 int option;
  62
  63                 option = getopt_long(argc, argv, "h", options, NULL);
  64                 if (option == -1)
  65                         break;
  66
  67                 switch (option) {
  68                 case 'h':
  69                         help(udev);
  70                         goto out;
  71                 }
  72         }
  73         command = argv[optind++];
  74         if (command == NULL) {
  75                 fprintf(stderr, "command missing\n");
  76                 help(udev);
  77                 rc = 2;
  78                 goto out;
  79         }
  80
  81         syspath = argv[optind++];
  82         if (syspath == NULL) {
  83                 fprintf(stderr, "syspath missing\n\n");
  84                 rc = 3;
  85                 goto out;
  86         }
  87
  88         /* add /sys if needed */
  89         if (strncmp(syspath, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0)
  90                 util_strscpyl(filename, sizeof(filename), udev_get_sys_path(udev), syspath, NULL);
  91         else
  92                 util_strscpy(filename, sizeof(filename), syspath);
  93         util_remove_trailing_chars(filename, '/');
  94
  95         dev = udev_device_new_from_syspath(udev, filename);
  96         if (dev == NULL) {
  97                 fprintf(stderr, "unable to open device '%s'\n\n", filename);
  98                 rc = 4;
  99                 goto out;
 100         }
 101
 102         cmd = udev_builtin_lookup(command);
 103         if (cmd >= UDEV_BUILTIN_MAX) {
 104                 fprintf(stderr, "unknown command '%s'\n", command);
 105                 help(udev);
 106                 rc = 5;
 107                 goto out;
 108         }
 109
 110         if (udev_builtin_run(dev, cmd, command, true) < 0) {
 111                 fprintf(stderr, "error executing '%s'\n\n", command);
 112                 rc = 6;
 113         }
 114 out:
 115         udev_device_unref(dev);
 116         return rc;
 117 }
 118
 119 const struct udevadm_cmd udevadm_test_builtin = {
 120         .name = "test-builtin",
 121         .cmd = adm_builtin,
 122         .help = "test a built-in command",
 123 };