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 <getopt.h>
  27 #include <signal.h>
  28 #include <time.h>
  29 #include <sys/inotify.h>
  30 #include <sys/poll.h>
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33
  34 #include "udev.h"
  35
  36 static void help(struct udev *udev) {
  37         fprintf(stderr, "\n");
  38         fprintf(stderr, "Usage: udevadm builtin [--help] COMMAND SYSPATH\n");
  39         udev_builtin_list(udev);
  40         fprintf(stderr, "\n");
  41 }
  42
  43 static int adm_builtin(struct udev *udev, int argc, char *argv[]) {
  44         static const struct option options[] = {
  45                 { "help", no_argument, NULL, 'h' },
  46                 {}
  47         };
  48         char *command = NULL;
  49         char *syspath = NULL;
  50         char filename[UTIL_PATH_SIZE];
  51         struct udev_device *dev = NULL;
  52         enum udev_builtin_cmd cmd;
  53         int rc = EXIT_SUCCESS, c;
  54
  55         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
  56                 switch (c) {
  57                 case 'h':
  58                         help(udev);
  59                         goto out;
  60                 }
  61
  62         command = argv[optind++];
  63         if (command == NULL) {
  64                 fprintf(stderr, "command missing\n");
  65                 help(udev);
  66                 rc = 2;
  67                 goto out;
  68         }
  69
  70         syspath = argv[optind++];
  71         if (syspath == NULL) {
  72                 fprintf(stderr, "syspath missing\n");
  73                 rc = 3;
  74                 goto out;
  75         }
  76
  77         udev_builtin_init(udev);
  78
  79         cmd = udev_builtin_lookup(command);
  80         if (cmd >= UDEV_BUILTIN_MAX) {
  81                 fprintf(stderr, "unknown command '%s'\n", command);
  82                 help(udev);
  83                 rc = 5;
  84                 goto out;
  85         }
  86
  87         /* add /sys if needed */
  88         if (!startswith(syspath, "/sys"))
  89                 strscpyl(filename, sizeof(filename), "/sys", syspath, NULL);
  90         else
  91                 strscpy(filename, sizeof(filename), syspath);
  92         util_remove_trailing_chars(filename, '/');
  93
  94         dev = udev_device_new_from_syspath(udev, filename);
  95         if (dev == NULL) {
  96                 fprintf(stderr, "unable to open device '%s'\n\n", filename);
  97                 rc = 4;
  98                 goto out;
  99         }
 100
 101         rc = udev_builtin_run(dev, cmd, command, true);
 102         if (rc < 0) {
 103                 fprintf(stderr, "error executing '%s', exit code %i\n\n", command, rc);
 104                 rc = 6;
 105         }
 106 out:
 107         udev_device_unref(dev);
 108         udev_builtin_exit(udev);
 109         return rc;
 110 }
 111
 112 const struct udevadm_cmd udevadm_test_builtin = {
 113         .name = "test-builtin",
 114         .cmd = adm_builtin,
 115         .help = "test a built-in command",
 116         .debug = true,
 117 };