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