src/udev/udev-builtin.c

   1 /*
   2  * Copyright (C) 2007-2012 Kay Sievers <kay.sievers@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 <unistd.h>
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <stddef.h>
  22 #include <string.h>
  23 #include <errno.h>
  24 #include <getopt.h>
  25
  26 #include "udev.h"
  27
  28 static bool initialized;
  29
  30 static const struct udev_builtin *builtins[] = {
  31         [UDEV_BUILTIN_BLKID] = &udev_builtin_blkid,
  32         [UDEV_BUILTIN_FIRMWARE] = &udev_builtin_firmware,
  33         [UDEV_BUILTIN_INPUT_ID] = &udev_builtin_input_id,
  34         [UDEV_BUILTIN_KMOD] = &udev_builtin_kmod,
  35         [UDEV_BUILTIN_PATH_ID] = &udev_builtin_path_id,
  36         [UDEV_BUILTIN_PCI_DB] = &udev_builtin_pci_db,
  37         [UDEV_BUILTIN_USB_DB] = &udev_builtin_usb_db,
  38         [UDEV_BUILTIN_USB_ID] = &udev_builtin_usb_id,
  39 #ifdef HAVE_ACL
  40         [UDEV_BUILTIN_UACCESS] = &udev_builtin_uaccess,
  41 #endif
  42 };
  43
  44 int udev_builtin_init(struct udev *udev)
  45 {
  46         unsigned int i;
  47         int err = 0;
  48
  49         if (initialized)
  50                 return 0;
  51
  52         for (i = 0; i < ELEMENTSOF(builtins); i++) {
  53                 if (builtins[i]->init) {
  54                         err = builtins[i]->init(udev);
  55                         if (err < 0)
  56                                 break;
  57                 }
  58         }
  59
  60         initialized = true;
  61         return err;
  62 }
  63
  64 void udev_builtin_exit(struct udev *udev)
  65 {
  66         unsigned int i;
  67
  68         if (!initialized)
  69                 return;
  70
  71         for (i = 0; i < ELEMENTSOF(builtins); i++)
  72                 if (builtins[i]->exit)
  73                         builtins[i]->exit(udev);
  74
  75         initialized = false;
  76 }
  77
  78 bool udev_builtin_validate(struct udev *udev)
  79 {
  80         unsigned int i;
  81         bool change = false;
  82
  83         for (i = 0; i < ELEMENTSOF(builtins); i++)
  84                 if (builtins[i]->validate)
  85                         if (builtins[i]->validate(udev))
  86                                 change = true;
  87         return change;
  88 }
  89
  90 void udev_builtin_list(struct udev *udev)
  91 {
  92         unsigned int i;
  93
  94         for (i = 0; i < ELEMENTSOF(builtins); i++)
  95                 fprintf(stderr, "  %-12s %s\n", builtins[i]->name, builtins[i]->help);
  96 }
  97
  98 const char *udev_builtin_name(enum udev_builtin_cmd cmd)
  99 {
 100         return builtins[cmd]->name;
 101 }
 102
 103 bool udev_builtin_run_once(enum udev_builtin_cmd cmd)
 104 {
 105         return builtins[cmd]->run_once;
 106 }
 107
 108 enum udev_builtin_cmd udev_builtin_lookup(const char *command)
 109 {
 110         char name[UTIL_PATH_SIZE];
 111         enum udev_builtin_cmd i;
 112         char *pos;
 113
 114         util_strscpy(name, sizeof(name), command);
 115         pos = strchr(name, ' ');
 116         if (pos)
 117                 pos[0] = '\0';
 118         for (i = 0; i < ELEMENTSOF(builtins); i++)
 119                 if (strcmp(builtins[i]->name, name) == 0)
 120                         return i;
 121         return UDEV_BUILTIN_MAX;
 122 }
 123
 124 int udev_builtin_run(struct udev_device *dev, enum udev_builtin_cmd cmd, const char *command, bool test)
 125 {
 126         char arg[UTIL_PATH_SIZE];
 127         int argc;
 128         char *argv[128];
 129
 130         optind = 0;
 131         util_strscpy(arg, sizeof(arg), command);
 132         udev_build_argv(udev_device_get_udev(dev), arg, &argc, argv);
 133         return builtins[cmd]->cmd(dev, argc, argv, test);
 134 }
 135
 136 int udev_builtin_add_property(struct udev_device *dev, bool test, const char *key, const char *val)
 137 {
 138         struct udev_list_entry *entry;
 139
 140         entry = udev_device_add_property(dev, key, val);
 141         /* store in db, skip private keys */
 142         if (key[0] != '.')
 143                 udev_list_entry_set_num(entry, true);
 144
 145         log_debug("%s=%s\n", key, val);
 146         if (test)
 147                 printf("%s=%s\n", key, val);
 148         return 0;
 149 }