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