src/udev/udevadm-test-builtin.c

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright (C) 2011 Kay Sievers <kay@vrfy.org>
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <errno.h>
  20 #include <getopt.h>
  21 #include <stddef.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25 #include "path-util.h"
  26 #include "string-util.h"
  27 #include "udev.h"
  28 #include "udevadm-util.h"
  29
  30 static void help(struct udev *udev) {
  31         printf("%s test-builtin [OPTIONS] COMMAND DEVPATH\n\n"
  32                "Test a built-in command.\n\n"
  33                "  -h --help     Print this message\n"
  34                "  -V --version  Print version of the program\n\n"
  35                "Commands:\n"
  36                , program_invocation_short_name);
  37
  38         udev_builtin_list(udev);
  39 }
  40
  41 static int adm_builtin(struct udev *udev, int argc, char *argv[]) {
  42         static const struct option options[] = {
  43                 { "version", no_argument, NULL, 'V' },
  44                 { "help",    no_argument, NULL, 'h' },
  45                 {}
  46         };
  47         char *command = NULL;
  48         char *syspath = NULL;
  49         char filename[UTIL_PATH_SIZE];
  50         struct udev_device *dev = NULL;
  51         enum udev_builtin_cmd cmd;
  52         int rc = EXIT_SUCCESS, c;
  53
  54         while ((c = getopt_long(argc, argv, "Vh", options, NULL)) >= 0)
  55                 switch (c) {
  56                 case 'V':
  57                         print_version();
  58                         goto out;
  59                 case 'h':
  60                         help(udev);
  61                         goto out;
  62                 }
  63
  64         command = argv[optind++];
  65         if (command == NULL) {
  66                 fprintf(stderr, "command missing\n");
  67                 help(udev);
  68                 rc = 2;
  69                 goto out;
  70         }
  71
  72         syspath = argv[optind++];
  73         if (syspath == NULL) {
  74                 fprintf(stderr, "syspath missing\n");
  75                 rc = 3;
  76                 goto out;
  77         }
  78
  79         udev_builtin_init(udev);
  80
  81         cmd = udev_builtin_lookup(command);
  82         if (cmd >= UDEV_BUILTIN_MAX) {
  83                 fprintf(stderr, "unknown command '%s'\n", command);
  84                 help(udev);
  85                 rc = 5;
  86                 goto out;
  87         }
  88
  89         /* add /sys if needed */
  90         if (!path_startswith(syspath, "/sys"))
  91                 strscpyl(filename, sizeof(filename), "/sys", syspath, NULL);
  92         else
  93                 strscpy(filename, sizeof(filename), syspath);
  94         delete_trailing_chars(filename, "/");
  95
  96         dev = udev_device_new_from_syspath(udev, filename);
  97         if (dev == NULL) {
  98                 fprintf(stderr, "unable to open device '%s'\n\n", filename);
  99                 rc = 4;
 100                 goto out;
 101         }
 102
 103         rc = udev_builtin_run(dev, cmd, command, true);
 104         if (rc < 0) {
 105                 fprintf(stderr, "error executing '%s', exit code %i\n\n", command, rc);
 106                 rc = 6;
 107         }
 108 out:
 109         udev_device_unref(dev);
 110         udev_builtin_exit(udev);
 111         return rc;
 112 }
 113
 114 const struct udevadm_cmd udevadm_test_builtin = {
 115         .name = "test-builtin",
 116         .cmd = adm_builtin,
 117         .help = "Test a built-in command",
 118         .debug = true,
 119 };