sortix-mirror/libmount/include/mount/partition.h

105 lines
2.9 KiB
C

/*
* Copyright (c) 2015 Jonas 'Sortie' Termansen.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* mount/partition.h
* Partition abstraction.
*/
#ifndef INCLUDE_MOUNT_PARTITION_H
#define INCLUDE_MOUNT_PARTITION_H
#include <sys/types.h>
#if !defined(__cplusplus)
#include <stdbool.h>
#endif
#include <stddef.h>
#include <stdint.h>
#include <mount/blockdevice.h>
#include <mount/error.h>
enum partition_type
{
PARTITION_TYPE_PRIMARY,
PARTITION_TYPE_EXTENDED,
PARTITION_TYPE_LOGICAL,
};
enum partition_table_type
{
PARTITION_TABLE_TYPE_NONE,
PARTITION_TABLE_TYPE_UNKNOWN,
PARTITION_TABLE_TYPE_MBR,
PARTITION_TABLE_TYPE_GPT,
};
struct partition
{
struct blockdevice bdev;
struct blockdevice* parent_bdev;
char* path;
off_t start;
off_t length;
off_t extended_start;
off_t extended_length;
enum partition_type type;
enum partition_table_type table_type;
unsigned int index;
unsigned char gpt_type_guid[16];
unsigned char gpt_unique_guid[16];
unsigned char mbr_system_id;
char* gpt_name;
uint64_t gpt_attributes;
};
struct partition_table
{
enum partition_table_type type;
struct partition** partitions;
size_t partitions_count;
enum partition_error error;
unsigned char gpt_disk_guid[16];
void* raw_partition_table;
off_t usable_start;
off_t usable_end;
};
#if defined(__cplusplus)
extern "C" {
#endif
int partition_compare_index(const struct partition*, const struct partition*);
int partition_compare_index_indirect(const void*, const void*);
int partition_compare_start(const struct partition*, const struct partition*);
int partition_compare_start_indirect(const void*, const void*);
const char* partition_error_string(enum partition_error);
bool partition_check_overlap(const struct partition*, off_t, off_t);
void partition_release(struct partition*);
bool blockdevice_probe_partition_table_type(enum partition_table_type*, struct blockdevice*);
enum partition_error
blockdevice_get_partition_table(struct partition_table**, struct blockdevice*);
enum partition_error
blockdevice_get_partition_table_mbr(struct partition_table**, struct blockdevice*);
enum partition_error
blockdevice_get_partition_table_gpt(struct partition_table**, struct blockdevice*);
void partition_table_release(struct partition_table*);
#if defined(__cplusplus)
} /* extern "C" */
#endif
#endif