udev/udev-builtin-kmod.c

   1 /*
   2  * load kernel modules
   3  *
   4  * Copyright (C) 2011 Kay Sievers <kay.sievers@vrfy.org>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <stdarg.h>
  23 #include <unistd.h>
  24 #include <string.h>
  25 #include <errno.h>
  26 #include <fcntl.h>
  27 #include <sys/stat.h>
  28 #include <sys/wait.h>
  29
  30 #include "udev.h"
  31
  32 static int builtin_kmod(struct udev_device *dev, int argc, char *argv[], bool test)
  33 {
  34         struct udev *udev = udev_device_get_udev(dev);
  35         pid_t pid;
  36         char *m[5];
  37
  38         if (argc < 3) {
  39                 err(udev, "missing command + argument\n");
  40                 return EXIT_FAILURE;
  41         }
  42
  43         err(udev, "'%s' the module '%s' (%i)\n", argv[1], argv[2], argc);
  44
  45         m[0] = "/sbin/modprobe";
  46         m[1] = "-bv";
  47         m[1] = argv[2];
  48         m[2] = argv[3];
  49         m[3] = NULL;
  50
  51         pid = fork();
  52         switch(pid) {
  53         case 0:
  54                 execv(m[0], m);
  55                 _exit(1);
  56         case -1:
  57                 return EXIT_FAILURE;
  58         default:
  59                 waitpid(pid, NULL, 0);
  60         }
  61
  62         return EXIT_SUCCESS;
  63 }
  64
  65 static int builtin_kmod_load(struct udev *udev)
  66 {
  67         info(udev, "load module index\n");
  68         return 0;
  69 }
  70
  71 static int builtin_kmod_unload(struct udev *udev)
  72 {
  73         info(udev, "unload module index\n");
  74         return 0;
  75 }
  76
  77 const struct udev_builtin udev_builtin_kmod = {
  78         .name = "kmod",
  79         .cmd = builtin_kmod,
  80         .load = builtin_kmod_load,
  81         .unload = builtin_kmod_unload,
  82         .help = "kernel module loader",
  83         .run_once = false,
  84 };