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 <errno.h>
  19 #include <getopt.h>
  20 #include <stddef.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23
  24 #include "string-util.h"
  25 #include "udev.h"
  26
  27 static void help(struct udev *udev) {
  28         printf("%s builtin [--help] COMMAND SYSPATH\n\n"
  29                "Test a built-in command.\n\n"
  30                "  -h --help     Print this message\n"
  31                "     --version  Print version of the program\n\n"
  32                "Commands:\n"
  33                , program_invocation_short_name);
  34
  35         udev_builtin_list(udev);
  36 }
  37
  38 static int adm_builtin(struct udev *udev, int argc, char *argv[]) {
  39         static const struct option options[] = {
  40                 { "help", no_argument, NULL, 'h' },
  41                 {}
  42         };
  43         char *command = NULL;
  44         char *syspath = NULL;
  45         char filename[UTIL_PATH_SIZE];
  46         struct udev_device *dev = NULL;
  47         enum udev_builtin_cmd cmd;
  48         int rc = EXIT_SUCCESS, c;
  49
  50         while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
  51                 switch (c) {
  52                 case 'h':
  53                         help(udev);
  54                         goto out;
  55                 }
  56
  57         command = argv[optind++];
  58         if (command == NULL) {
  59                 fprintf(stderr, "command missing\n");
  60                 help(udev);
  61                 rc = 2;
  62                 goto out;
  63         }
  64
  65         syspath = argv[optind++];
  66         if (syspath == NULL) {
  67                 fprintf(stderr, "syspath missing\n");
  68                 rc = 3;
  69                 goto out;
  70         }
  71
  72         udev_builtin_init(udev);
  73
  74         cmd = udev_builtin_lookup(command);
  75         if (cmd >= UDEV_BUILTIN_MAX) {
  76                 fprintf(stderr, "unknown command '%s'\n", command);
  77                 help(udev);
  78                 rc = 5;
  79                 goto out;
  80         }
  81
  82         /* add /sys if needed */
  83         if (!startswith(syspath, "/sys"))
  84                 strscpyl(filename, sizeof(filename), "/sys", syspath, NULL);
  85         else
  86                 strscpy(filename, sizeof(filename), syspath);
  87         util_remove_trailing_chars(filename, '/');
  88
  89         dev = udev_device_new_from_syspath(udev, filename);
  90         if (dev == NULL) {
  91                 fprintf(stderr, "unable to open device '%s'\n\n", filename);
  92                 rc = 4;
  93                 goto out;
  94         }
  95
  96         rc = udev_builtin_run(dev, cmd, command, true);
  97         if (rc < 0) {
  98                 fprintf(stderr, "error executing '%s', exit code %i\n\n", command, rc);
  99                 rc = 6;
 100         }
 101 out:
 102         udev_device_unref(dev);
 103         udev_builtin_exit(udev);
 104         return rc;
 105 }
 106
 107 const struct udevadm_cmd udevadm_test_builtin = {
 108         .name = "test-builtin",
 109         .cmd = adm_builtin,
 110         .help = "Test a built-in command",
 111         .debug = true,
 112 };