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 <stdio.h>
  21 #include <errno.h>
  22 #include <getopt.h>
  23
  24 #include "udev.h"
  25
  26 static void help(struct udev *udev) {
  27         printf("%s builtin [--help] COMMAND SYSPATH\n\n"
  28                "Test a built-in command.\n\n"
  29                "  -h --help     Print this message\n"
  30                "     --version  Print version of the program\n\n"
  31                "Commands:\n"
  32                , program_invocation_short_name);
  33
  34         udev_builtin_list(udev);
  35 }
  36
  37 static int adm_builtin(struct udev *udev, int argc, char *argv[]) {
  38         static const struct option options[] = {
  39                 { "help", no_argument, NULL, 'h' },
  40                 {}
  41         };
  42         char *command = NULL;
  43         char *syspath = NULL;
  44         char filename[UTIL_PATH_SIZE];
  45         struct udev_device *dev = NULL;
  46         enum udev_builtin_cmd cmd;
  47         int rc = EXIT_SUCCESS, c;
  48
  49         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
  50                 switch (c) {
  51                 case 'h':
  52                         help(udev);
  53                         goto out;
  54                 }
  55
  56         command = argv[optind++];
  57         if (command == NULL) {
  58                 fprintf(stderr, "command missing\n");
  59                 help(udev);
  60                 rc = 2;
  61                 goto out;
  62         }
  63
  64         syspath = argv[optind++];
  65         if (syspath == NULL) {
  66                 fprintf(stderr, "syspath missing\n");
  67                 rc = 3;
  68                 goto out;
  69         }
  70
  71         udev_builtin_init(udev);
  72
  73         cmd = udev_builtin_lookup(command);
  74         if (cmd >= UDEV_BUILTIN_MAX) {
  75                 fprintf(stderr, "unknown command '%s'\n", command);
  76                 help(udev);
  77                 rc = 5;
  78                 goto out;
  79         }
  80
  81         /* add /sys if needed */
  82         if (!startswith(syspath, "/sys"))
  83                 strscpyl(filename, sizeof(filename), "/sys", syspath, NULL);
  84         else
  85                 strscpy(filename, sizeof(filename), syspath);
  86         util_remove_trailing_chars(filename, '/');
  87
  88         dev = udev_device_new_from_syspath(udev, filename);
  89         if (dev == NULL) {
  90                 fprintf(stderr, "unable to open device '%s'\n\n", filename);
  91                 rc = 4;
  92                 goto out;
  93         }
  94
  95         rc = udev_builtin_run(dev, cmd, command, true);
  96         if (rc < 0) {
  97                 fprintf(stderr, "error executing '%s', exit code %i\n\n", command, rc);
  98                 rc = 6;
  99         }
 100 out:
 101         udev_device_unref(dev);
 102         udev_builtin_exit(udev);
 103         return rc;
 104 }
 105
 106 const struct udevadm_cmd udevadm_test_builtin = {
 107         .name = "test-builtin",
 108         .cmd = adm_builtin,
 109         .help = "Test a built-in command",
 110         .debug = true,
 111 };