arch/all-pc/boot/grub2-aros/grub-core/kern/list.c

   1 /* list.c - grub list function */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2009  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/list.h>
  21 #include <grub/misc.h>
  22 #include <grub/mm.h>
  23
  24 void *
  25 grub_named_list_find (grub_named_list_t head, const char *name)
  26 {
  27   grub_named_list_t item;
  28
  29   FOR_LIST_ELEMENTS (item, head)
  30     if (grub_strcmp (item->name, name) == 0)
  31       return item;
  32
  33   return NULL;
  34 }
  35
  36 void
  37 grub_list_push (grub_list_t *head, grub_list_t item)
  38 {
  39   item->prev = head;
  40   if (*head)
  41     (*head)->prev = &item->next;
  42   item->next = *head;
  43   *head = item;
  44 }
  45
  46 void
  47 grub_list_remove (grub_list_t item)
  48 {
  49   if (item->prev)
  50     *item->prev = item->next;
  51   if (item->next)
  52     item->next->prev = item->prev;
  53   item->next = 0;
  54   item->prev = 0;
  55 }