diff options
Diffstat (limited to 'include/grub/list.h')
-rw-r--r-- | include/grub/list.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/include/grub/list.h b/include/grub/list.h new file mode 100644 index 0000000..7535301 --- /dev/null +++ b/include/grub/list.h @@ -0,0 +1,117 @@ +/* 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/types.h> +#include <grub/misc.h> + +struct grub_list +{ + struct grub_list *next; +}; +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 *head, grub_list_t item); + +#define FOR_LIST_ELEMENTS(var, list) for ((var) = (list); (var); (var) = (var)->next) + +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); + return 0; +} + +#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_list_t) ptr : grub_bad_type_cast ()) + +#define GRUB_AS_LIST_P(pptr) \ + (GRUB_FIELD_MATCH (*pptr, grub_list_t, next) ? \ + (grub_list_t *) (void *) pptr : grub_bad_type_cast ()) + +struct grub_named_list +{ + struct grub_named_list *next; + 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, name))? \ + (grub_named_list_t) ptr : 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, name))? \ + (grub_named_list_t *) (void *) pptr : grub_bad_type_cast ()) + +#define GRUB_PRIO_LIST_PRIO_MASK 0xff +#define GRUB_PRIO_LIST_FLAG_ACTIVE 0x100 + +struct grub_prio_list +{ + struct grub_prio_list *next; + char *name; + int prio; +}; +typedef struct grub_prio_list *grub_prio_list_t; + +void EXPORT_FUNC(grub_prio_list_insert) (grub_prio_list_t *head, + grub_prio_list_t item); + +static inline void +grub_prio_list_remove (grub_prio_list_t *head, grub_prio_list_t item) +{ + if ((item->prio & GRUB_PRIO_LIST_FLAG_ACTIVE) && (item->next)) + item->next->prio |= GRUB_PRIO_LIST_FLAG_ACTIVE; + grub_list_remove (GRUB_AS_LIST_P (head), GRUB_AS_LIST (item)); +} + +#define GRUB_AS_PRIO_LIST(ptr) \ + ((GRUB_FIELD_MATCH (ptr, grub_prio_list_t, next) && \ + GRUB_FIELD_MATCH (ptr, grub_prio_list_t, name) && \ + GRUB_FIELD_MATCH (ptr, grub_prio_list_t, prio))? \ + (grub_prio_list_t) ptr : grub_bad_type_cast ()) + +#define GRUB_AS_PRIO_LIST_P(pptr) \ + ((GRUB_FIELD_MATCH (*pptr, grub_prio_list_t, next) && \ + GRUB_FIELD_MATCH (*pptr, grub_prio_list_t, name) && \ + GRUB_FIELD_MATCH (*pptr, grub_prio_list_t, prio))? \ + (grub_prio_list_t *) (void *) pptr : grub_bad_type_cast ()) + +#endif /* ! GRUB_LIST_HEADER */ |