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