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/* list.h - header for grub list */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_LIST_HEADER
#define GRUB_LIST_HEADER 1
#include <grub/symbol.h>
#include <grub/err.h>
#include <grub/compiler.h>
struct grub_list
{
struct grub_list *next;
struct grub_list **prev;
};
typedef struct grub_list *grub_list_t;
void EXPORT_FUNC(grub_list_push) (grub_list_t *head, grub_list_t item);
void EXPORT_FUNC(grub_list_remove) (grub_list_t item);
#define FOR_LIST_ELEMENTS(var, list) for ((var) = (list); (var); (var) = (var)->next)
#define FOR_LIST_ELEMENTS_NEXT(var, list) for ((var) = (var)->next; (var); (var) = (var)->next)
#define FOR_LIST_ELEMENTS_SAFE(var, nxt, list) for ((var) = (list), (nxt) = ((var) ? (var)->next : 0); (var); (var) = (nxt), ((nxt) = (var) ? (var)->next : 0))
static inline void *
grub_bad_type_cast_real (int line, const char *file)
ATTRIBUTE_ERROR ("bad type cast between incompatible grub types");
static inline void *
grub_bad_type_cast_real (int line, const char *file)
{
grub_fatal ("error:%s:%u: bad type cast between incompatible grub types",
file, line);
}
#define grub_bad_type_cast() grub_bad_type_cast_real(__LINE__, GRUB_FILE)
#define GRUB_FIELD_MATCH(ptr, type, field) \
((char *) &(ptr)->field == (char *) &((type) (ptr))->field)
#define GRUB_AS_LIST(ptr) \
(GRUB_FIELD_MATCH (ptr, grub_list_t, next) && GRUB_FIELD_MATCH (ptr, grub_list_t, prev) ? \
(grub_list_t) ptr : (grub_list_t) grub_bad_type_cast ())
#define GRUB_AS_LIST_P(pptr) \
(GRUB_FIELD_MATCH (*pptr, grub_list_t, next) && GRUB_FIELD_MATCH (*pptr, grub_list_t, prev) ? \
(grub_list_t *) (void *) pptr : (grub_list_t *) grub_bad_type_cast ())
struct grub_named_list
{
struct grub_named_list *next;
struct grub_named_list **prev;
char *name;
};
typedef struct grub_named_list *grub_named_list_t;
void * EXPORT_FUNC(grub_named_list_find) (grub_named_list_t head,
const char *name);
#define GRUB_AS_NAMED_LIST(ptr) \
((GRUB_FIELD_MATCH (ptr, grub_named_list_t, next) \
&& GRUB_FIELD_MATCH (ptr, grub_named_list_t, prev) \
&& GRUB_FIELD_MATCH (ptr, grub_named_list_t, name))? \
(grub_named_list_t) ptr : (grub_named_list_t) grub_bad_type_cast ())
#define GRUB_AS_NAMED_LIST_P(pptr) \
((GRUB_FIELD_MATCH (*pptr, grub_named_list_t, next) \
&& GRUB_FIELD_MATCH (*pptr, grub_named_list_t, prev) \
&& GRUB_FIELD_MATCH (*pptr, grub_named_list_t, name))? \
(grub_named_list_t *) (void *) pptr : (grub_named_list_t *) grub_bad_type_cast ())
#endif /* ! GRUB_LIST_HEADER */
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