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 <stdio.h>
  21 #include <string.h>
  22 #include <getopt.h>
  23
  24 #include "udev.h"
  25
  26 static bool initialized;
  27
  28 static const struct udev_builtin *builtins[] = {
  29 #ifdef HAVE_BLKID
  30         [UDEV_BUILTIN_BLKID] = &udev_builtin_blkid,
  31 #endif
  32         [UDEV_BUILTIN_BTRFS] = &udev_builtin_btrfs,
  33         [UDEV_BUILTIN_HWDB] = &udev_builtin_hwdb,
  34         [UDEV_BUILTIN_INPUT_ID] = &udev_builtin_input_id,
  35         [UDEV_BUILTIN_KEYBOARD] = &udev_builtin_keyboard,
  36 #ifdef HAVE_KMOD
  37         [UDEV_BUILTIN_KMOD] = &udev_builtin_kmod,
  38 #endif
  39         [UDEV_BUILTIN_NET_ID] = &udev_builtin_net_id,
  40         [UDEV_BUILTIN_NET_LINK] = &udev_builtin_net_setup_link,
  41         [UDEV_BUILTIN_PATH_ID] = &udev_builtin_path_id,
  42         [UDEV_BUILTIN_USB_ID] = &udev_builtin_usb_id,
  43 #ifdef HAVE_ACL
  44         [UDEV_BUILTIN_UACCESS] = &udev_builtin_uaccess,
  45 #endif
  46 };
  47
  48 void udev_builtin_init(struct udev *udev) {
  49         unsigned int i;
  50
  51         if (initialized)
  52                 return;
  53
  54         for (i = 0; i < ELEMENTSOF(builtins); i++)
  55                 if (builtins[i]->init)
  56                         builtins[i]->init(udev);
  57
  58         initialized = true;
  59 }
  60
  61 void udev_builtin_exit(struct udev *udev) {
  62         unsigned int i;
  63
  64         if (!initialized)
  65                 return;
  66
  67         for (i = 0; i < ELEMENTSOF(builtins); i++)
  68                 if (builtins[i]->exit)
  69                         builtins[i]->exit(udev);
  70
  71         initialized = false;
  72 }
  73
  74 bool udev_builtin_validate(struct udev *udev) {
  75         unsigned int i;
  76
  77         for (i = 0; i < ELEMENTSOF(builtins); i++)
  78                 if (builtins[i]->validate && builtins[i]->validate(udev))
  79                         return true;
  80         return false;
  81 }
  82
  83 void udev_builtin_list(struct udev *udev) {
  84         unsigned int i;
  85
  86         for (i = 0; i < ELEMENTSOF(builtins); i++)
  87                 fprintf(stderr, "  %-14s  %s\n", builtins[i]->name, builtins[i]->help);
  88 }
  89
  90 const char *udev_builtin_name(enum udev_builtin_cmd cmd) {
  91         return builtins[cmd]->name;
  92 }
  93
  94 bool udev_builtin_run_once(enum udev_builtin_cmd cmd) {
  95         return builtins[cmd]->run_once;
  96 }
  97
  98 enum udev_builtin_cmd udev_builtin_lookup(const char *command) {
  99         char name[UTIL_PATH_SIZE];
 100         enum udev_builtin_cmd i;
 101         char *pos;
 102
 103         strscpy(name, sizeof(name), command);
 104         pos = strchr(name, ' ');
 105         if (pos)
 106                 pos[0] = '\0';
 107         for (i = 0; i < ELEMENTSOF(builtins); i++)
 108                 if (streq(builtins[i]->name, name))
 109                         return i;
 110         return UDEV_BUILTIN_MAX;
 111 }
 112
 113 int udev_builtin_run(struct udev_device *dev, enum udev_builtin_cmd cmd, const char *command, bool test) {
 114         char arg[UTIL_PATH_SIZE];
 115         int argc;
 116         char *argv[128];
 117
 118         /* we need '0' here to reset the internal state */
 119         optind = 0;
 120         strscpy(arg, sizeof(arg), command);
 121         udev_build_argv(udev_device_get_udev(dev), arg, &argc, argv);
 122         return builtins[cmd]->cmd(dev, argc, argv, test);
 123 }
 124
 125 int udev_builtin_add_property(struct udev_device *dev, bool test, const char *key, const char *val) {
 126         struct udev_list_entry *entry;
 127
 128         entry = udev_device_add_property(dev, key, val);
 129         /* store in db, skip private keys */
 130         if (key[0] != '.')
 131                 udev_list_entry_set_num(entry, true);
 132
 133         if (test)
 134                 printf("%s=%s\n", key, val);
 135         return 0;
 136 }