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Diffstat (limited to 'include/grub/partition.h')
| -rw-r--r-- | include/grub/partition.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/include/grub/partition.h b/include/grub/partition.h new file mode 100644 index 0000000..8208cc7 --- /dev/null +++ b/include/grub/partition.h @@ -0,0 +1,141 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 1999,2000,2001,2002,2004,2006,2007 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_PART_HEADER +#define GRUB_PART_HEADER 1 + +#include <grub/dl.h> +#include <grub/list.h> + +struct grub_disk; + +typedef struct grub_partition *grub_partition_t; + +#ifdef GRUB_UTIL +typedef enum +{ + GRUB_EMBED_PCBIOS +} grub_embed_type_t; +#endif + +typedef int (*grub_partition_iterate_hook_t) (struct grub_disk *disk, + const grub_partition_t partition, + void *data); + +/* Partition map type. */ +struct grub_partition_map +{ + /* The next partition map type. */ + struct grub_partition_map *next; + struct grub_partition_map **prev; + + /* The name of the partition map type. */ + const char *name; + + /* Call HOOK with each partition, until HOOK returns non-zero. */ + grub_err_t (*iterate) (struct grub_disk *disk, + grub_partition_iterate_hook_t hook, void *hook_data); +#ifdef GRUB_UTIL +#define GRUB_MIN_RECOMMENDED_MBR_GAP 1900 + + /* Determine sectors available for embedding. */ + grub_err_t (*embed) (struct grub_disk *disk, unsigned int *nsectors, + unsigned int max_nsectors, + grub_embed_type_t embed_type, + grub_disk_addr_t **sectors, + int warn_short); +#endif +}; +typedef struct grub_partition_map *grub_partition_map_t; + +/* Partition description. */ +struct grub_partition +{ + /* The partition number. */ + int number; + + /* The start sector (relative to parent). */ + grub_disk_addr_t start; + + /* The length in sector units. */ + grub_uint64_t len; + + /* The offset of the partition table. */ + grub_disk_addr_t offset; + + /* The index of this partition in the partition table. */ + int index; + + /* Parent partition (physically contains this partition). */ + struct grub_partition *parent; + + /* The type partition map. */ + grub_partition_map_t partmap; + + /* The type of partition whne it's on MSDOS. + Used for embedding detection. */ + grub_uint8_t msdostype; +}; + +grub_partition_t EXPORT_FUNC(grub_partition_probe) (struct grub_disk *disk, + const char *str); +int EXPORT_FUNC(grub_partition_iterate) (struct grub_disk *disk, + grub_partition_iterate_hook_t hook, + void *hook_data); +char *EXPORT_FUNC(grub_partition_get_name) (const grub_partition_t partition); + + +extern grub_partition_map_t EXPORT_VAR(grub_partition_map_list); + +#ifndef GRUB_LST_GENERATOR +static inline void +grub_partition_map_register (grub_partition_map_t partmap) +{ + grub_list_push (GRUB_AS_LIST_P (&grub_partition_map_list), + GRUB_AS_LIST (partmap)); +} +#endif + +static inline void +grub_partition_map_unregister (grub_partition_map_t partmap) +{ + grub_list_remove (GRUB_AS_LIST (partmap)); +} + +#define FOR_PARTITION_MAPS(var) FOR_LIST_ELEMENTS((var), (grub_partition_map_list)) + + +static inline grub_disk_addr_t +grub_partition_get_start (const grub_partition_t p) +{ + grub_partition_t part; + grub_uint64_t part_start = 0; + + for (part = p; part; part = part->parent) + part_start += part->start; + + return part_start; +} + +static inline grub_uint64_t +grub_partition_get_len (const grub_partition_t p) +{ + return p->len; +} + +#endif /* ! GRUB_PART_HEADER */ |