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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:29:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:29:51 +0000 |
commit | 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch) | |
tree | 32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /include/grub/list.h | |
parent | Initial commit. (diff) | |
download | grub2-upstream/2.06.tar.xz grub2-upstream/2.06.zip |
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | include/grub/list.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/include/grub/list.h b/include/grub/list.h new file mode 100644 index 0000000..b13acb9 --- /dev/null +++ b/include/grub/list.h @@ -0,0 +1,88 @@ +/* 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 */ |