src/udev/udev-builtin.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2007-2012 Kay Sievers <kay@vrfy.org>
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <unistd.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <stddef.h>
  24 #include <string.h>
  25 #include <errno.h>
  26 #include <getopt.h>
  27
  28 #include "udev.h"
  29
  30 static bool initialized;
  31
  32 static const struct udev_builtin *builtins[] = {
  33 #ifdef HAVE_BLKID
  34         [UDEV_BUILTIN_BLKID] = &udev_builtin_blkid,
  35 #endif
  36         [UDEV_BUILTIN_BTRFS] = &udev_builtin_btrfs,
  37 #ifdef HAVE_FIRMWARE
  38         [UDEV_BUILTIN_FIRMWARE] = &udev_builtin_firmware,
  39 #endif
  40         [UDEV_BUILTIN_HWDB] = &udev_builtin_hwdb,
  41         [UDEV_BUILTIN_INPUT_ID] = &udev_builtin_input_id,
  42         [UDEV_BUILTIN_KEYBOARD] = &udev_builtin_keyboard,
  43 #ifdef HAVE_KMOD
  44         [UDEV_BUILTIN_KMOD] = &udev_builtin_kmod,
  45 #endif
  46         [UDEV_BUILTIN_NET_ID] = &udev_builtin_net_id,
  47         [UDEV_BUILTIN_PATH_ID] = &udev_builtin_path_id,
  48         [UDEV_BUILTIN_USB_ID] = &udev_builtin_usb_id,
  49 #ifdef HAVE_ACL
  50         [UDEV_BUILTIN_UACCESS] = &udev_builtin_uaccess,
  51 #endif
  52 };
  53
  54 void udev_builtin_init(struct udev *udev)
  55 {
  56         unsigned int i;
  57
  58         if (initialized)
  59                 return;
  60
  61         for (i = 0; i < ELEMENTSOF(builtins); i++)
  62                 if (builtins[i]->init)
  63                         builtins[i]->init(udev);
  64
  65         initialized = true;
  66 }
  67
  68 void udev_builtin_exit(struct udev *udev)
  69 {
  70         unsigned int i;
  71
  72         if (!initialized)
  73                 return;
  74
  75         for (i = 0; i < ELEMENTSOF(builtins); i++)
  76                 if (builtins[i]->exit)
  77                         builtins[i]->exit(udev);
  78
  79         initialized = false;
  80 }
  81
  82 bool udev_builtin_validate(struct udev *udev)
  83 {
  84         unsigned int i;
  85
  86         for (i = 0; i < ELEMENTSOF(builtins); i++)
  87                 if (builtins[i]->validate && builtins[i]->validate(udev))
  88                         return true;
  89         return false;
  90 }
  91
  92 void udev_builtin_list(struct udev *udev)
  93 {
  94         unsigned int i;
  95
  96         for (i = 0; i < ELEMENTSOF(builtins); i++)
  97                 fprintf(stderr, "  %-12s %s\n", builtins[i]->name, builtins[i]->help);
  98 }
  99
 100 const char *udev_builtin_name(enum udev_builtin_cmd cmd)
 101 {
 102         return builtins[cmd]->name;
 103 }
 104
 105 bool udev_builtin_run_once(enum udev_builtin_cmd cmd)
 106 {
 107         return builtins[cmd]->run_once;
 108 }
 109
 110 enum udev_builtin_cmd udev_builtin_lookup(const char *command)
 111 {
 112         char name[UTIL_PATH_SIZE];
 113         enum udev_builtin_cmd i;
 114         char *pos;
 115
 116         strscpy(name, sizeof(name), command);
 117         pos = strchr(name, ' ');
 118         if (pos)
 119                 pos[0] = '\0';
 120         for (i = 0; i < ELEMENTSOF(builtins); i++)
 121                 if (streq(builtins[i]->name, name))
 122                         return i;
 123         return UDEV_BUILTIN_MAX;
 124 }
 125
 126 int udev_builtin_run(struct udev_device *dev, enum udev_builtin_cmd cmd, const char *command, bool test)
 127 {
 128         char arg[UTIL_PATH_SIZE];
 129         int argc;
 130         char *argv[128];
 131
 132         /* we need '0' here to reset the internal state */
 133         optind = 0;
 134         strscpy(arg, sizeof(arg), command);
 135         udev_build_argv(udev_device_get_udev(dev), arg, &argc, argv);
 136         return builtins[cmd]->cmd(dev, argc, argv, test);
 137 }
 138
 139 int udev_builtin_add_property(struct udev_device *dev, bool test, const char *key, const char *val)
 140 {
 141         struct udev_list_entry *entry;
 142
 143         entry = udev_device_add_property(dev, key, val);
 144         /* store in db, skip private keys */
 145         if (key[0] != '.')
 146                 udev_list_entry_set_num(entry, true);
 147
 148         if (test)
 149                 printf("%s=%s\n", key, val);
 150         return 0;
 151 }