src/udev/udevadm-test-builtin.c

   1 /*
   2  * Copyright (C) 2011 Kay Sievers <kay@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         for (;;) {
  59                 int option;
  60
  61                 option = getopt_long(argc, argv, "h", options, NULL);
  62                 if (option == -1)
  63                         break;
  64
  65                 switch (option) {
  66                 case 'h':
  67                         help(udev);
  68                         goto out;
  69                 }
  70         }
  71
  72         command = argv[optind++];
  73         if (command == NULL) {
  74                 fprintf(stderr, "command missing\n");
  75                 help(udev);
  76                 rc = 2;
  77                 goto out;
  78         }
  79
  80         syspath = argv[optind++];
  81         if (syspath == NULL) {
  82                 fprintf(stderr, "syspath missing\n\n");
  83                 rc = 3;
  84                 goto out;
  85         }
  86
  87         udev_builtin_init(udev);
  88
  89         cmd = udev_builtin_lookup(command);
  90         if (cmd >= UDEV_BUILTIN_MAX) {
  91                 fprintf(stderr, "unknown command '%s'\n", command);
  92                 help(udev);
  93                 rc = 5;
  94                 goto out;
  95         }
  96
  97         /* add /sys if needed */
  98         if (!startswith(syspath, "/sys"))
  99                 strscpyl(filename, sizeof(filename), "/sys", syspath, NULL);
 100         else
 101                 strscpy(filename, sizeof(filename), syspath);
 102         util_remove_trailing_chars(filename, '/');
 103
 104         dev = udev_device_new_from_syspath(udev, filename);
 105         if (dev == NULL) {
 106                 fprintf(stderr, "unable to open device '%s'\n\n", filename);
 107                 rc = 4;
 108                 goto out;
 109         }
 110
 111         rc = udev_builtin_run(dev, cmd, command, true);
 112         if (rc < 0) {
 113                 fprintf(stderr, "error executing '%s', exit code %i\n\n", command, rc);
 114                 rc = 6;
 115         }
 116 out:
 117         udev_device_unref(dev);
 118         udev_builtin_exit(udev);
 119         return rc;
 120 }
 121
 122 const struct udevadm_cmd udevadm_test_builtin = {
 123         .name = "test-builtin",
 124         .cmd = adm_builtin,
 125         .help = "test a built-in command",
 126         .debug = true,
 127 };