118 lines
3.7 KiB
C
118 lines
3.7 KiB
C
/* list.h - header for grub list */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_LIST_HEADER
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#define GRUB_LIST_HEADER 1
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#include <grub/symbol.h>
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#include <grub/types.h>
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#include <grub/misc.h>
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struct grub_list
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{
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struct grub_list *next;
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};
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typedef struct grub_list *grub_list_t;
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void EXPORT_FUNC(grub_list_push) (grub_list_t *head, grub_list_t item);
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void EXPORT_FUNC(grub_list_remove) (grub_list_t *head, grub_list_t item);
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#define FOR_LIST_ELEMENTS(var, list) for ((var) = (list); (var); (var) = (var)->next)
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static inline void *
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grub_bad_type_cast_real (int line, const char *file)
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ATTRIBUTE_ERROR ("bad type cast between incompatible grub types");
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static inline void *
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grub_bad_type_cast_real (int line, const char *file)
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{
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grub_fatal ("error:%s:%u: bad type cast between incompatible grub types",
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file, line);
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return 0;
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}
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#define grub_bad_type_cast() grub_bad_type_cast_real(__LINE__, GRUB_FILE)
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#define GRUB_FIELD_MATCH(ptr, type, field) \
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((char *) &(ptr)->field == (char *) &((type) (ptr))->field)
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#define GRUB_AS_LIST(ptr) \
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(GRUB_FIELD_MATCH (ptr, grub_list_t, next) ? \
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(grub_list_t) ptr : grub_bad_type_cast ())
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#define GRUB_AS_LIST_P(pptr) \
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(GRUB_FIELD_MATCH (*pptr, grub_list_t, next) ? \
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(grub_list_t *) (void *) pptr : grub_bad_type_cast ())
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struct grub_named_list
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{
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struct grub_named_list *next;
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char *name;
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};
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typedef struct grub_named_list *grub_named_list_t;
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void * EXPORT_FUNC(grub_named_list_find) (grub_named_list_t head,
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const char *name);
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#define GRUB_AS_NAMED_LIST(ptr) \
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((GRUB_FIELD_MATCH (ptr, grub_named_list_t, next) && \
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GRUB_FIELD_MATCH (ptr, grub_named_list_t, name))? \
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(grub_named_list_t) ptr : grub_bad_type_cast ())
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#define GRUB_AS_NAMED_LIST_P(pptr) \
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((GRUB_FIELD_MATCH (*pptr, grub_named_list_t, next) && \
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GRUB_FIELD_MATCH (*pptr, grub_named_list_t, name))? \
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(grub_named_list_t *) (void *) pptr : grub_bad_type_cast ())
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#define GRUB_PRIO_LIST_PRIO_MASK 0xff
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#define GRUB_PRIO_LIST_FLAG_ACTIVE 0x100
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struct grub_prio_list
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{
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struct grub_prio_list *next;
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char *name;
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int prio;
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};
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typedef struct grub_prio_list *grub_prio_list_t;
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void EXPORT_FUNC(grub_prio_list_insert) (grub_prio_list_t *head,
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grub_prio_list_t item);
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static inline void
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grub_prio_list_remove (grub_prio_list_t *head, grub_prio_list_t item)
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{
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if ((item->prio & GRUB_PRIO_LIST_FLAG_ACTIVE) && (item->next))
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item->next->prio |= GRUB_PRIO_LIST_FLAG_ACTIVE;
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grub_list_remove (GRUB_AS_LIST_P (head), GRUB_AS_LIST (item));
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}
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#define GRUB_AS_PRIO_LIST(ptr) \
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((GRUB_FIELD_MATCH (ptr, grub_prio_list_t, next) && \
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GRUB_FIELD_MATCH (ptr, grub_prio_list_t, name) && \
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GRUB_FIELD_MATCH (ptr, grub_prio_list_t, prio))? \
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(grub_prio_list_t) ptr : grub_bad_type_cast ())
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#define GRUB_AS_PRIO_LIST_P(pptr) \
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((GRUB_FIELD_MATCH (*pptr, grub_prio_list_t, next) && \
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GRUB_FIELD_MATCH (*pptr, grub_prio_list_t, name) && \
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GRUB_FIELD_MATCH (*pptr, grub_prio_list_t, prio))? \
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(grub_prio_list_t *) (void *) pptr : grub_bad_type_cast ())
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#endif /* ! GRUB_LIST_HEADER */
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