146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2002,2003,2004,2005,2006,2007 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_DISK_HEADER
|
|
#define GRUB_DISK_HEADER 1
|
|
|
|
#include <grub/symbol.h>
|
|
#include <grub/err.h>
|
|
#include <grub/types.h>
|
|
#include <grub/device.h>
|
|
|
|
/* These are used to set a device id. When you add a new disk device,
|
|
you must define a new id for it here. */
|
|
enum grub_disk_dev_id
|
|
{
|
|
GRUB_DISK_DEVICE_BIOSDISK_ID,
|
|
GRUB_DISK_DEVICE_OFDISK_ID,
|
|
GRUB_DISK_DEVICE_LOOPBACK_ID,
|
|
GRUB_DISK_DEVICE_EFIDISK_ID,
|
|
GRUB_DISK_DEVICE_RAID_ID,
|
|
GRUB_DISK_DEVICE_LVM_ID
|
|
};
|
|
|
|
struct grub_disk;
|
|
|
|
/* Disk device. */
|
|
struct grub_disk_dev
|
|
{
|
|
/* The device name. */
|
|
const char *name;
|
|
|
|
/* The device id used by the cache manager. */
|
|
unsigned long id;
|
|
|
|
/* Call HOOK with each device name, until HOOK returns non-zero. */
|
|
int (*iterate) (int (*hook) (const char *name));
|
|
|
|
/* Open the device named NAME, and set up DISK. */
|
|
grub_err_t (*open) (const char *name, struct grub_disk *disk);
|
|
|
|
/* Close the disk DISK. */
|
|
void (*close) (struct grub_disk *disk);
|
|
|
|
/* Read SIZE sectors from the sector SECTOR of the disk DISK into BUF. */
|
|
grub_err_t (*read) (struct grub_disk *disk, grub_disk_addr_t sector,
|
|
grub_size_t size, char *buf);
|
|
|
|
/* Write SIZE sectors from BUF into the sector SECTOR of the disk DISK. */
|
|
grub_err_t (*write) (struct grub_disk *disk, grub_disk_addr_t sector,
|
|
grub_size_t size, const char *buf);
|
|
|
|
/* The next disk device. */
|
|
struct grub_disk_dev *next;
|
|
};
|
|
typedef struct grub_disk_dev *grub_disk_dev_t;
|
|
|
|
struct grub_partition;
|
|
|
|
/* Disk. */
|
|
struct grub_disk
|
|
{
|
|
/* The disk name. */
|
|
const char *name;
|
|
|
|
/* The underlying disk device. */
|
|
grub_disk_dev_t dev;
|
|
|
|
/* The total number of sectors. */
|
|
grub_uint64_t total_sectors;
|
|
|
|
/* If partitions can be stored. */
|
|
int has_partitions;
|
|
|
|
/* The id used by the disk cache manager. */
|
|
unsigned long id;
|
|
|
|
/* The partition information. This is machine-specific. */
|
|
struct grub_partition *partition;
|
|
|
|
/* Called when a sector was read. OFFSET is between 0 and
|
|
the sector size minus 1, and LENGTH is between 0 and the sector size. */
|
|
void (*read_hook) (grub_disk_addr_t sector,
|
|
unsigned offset, unsigned length);
|
|
|
|
/* Device-specific data. */
|
|
void *data;
|
|
};
|
|
typedef struct grub_disk *grub_disk_t;
|
|
|
|
/* The sector size. */
|
|
#define GRUB_DISK_SECTOR_SIZE 0x200
|
|
#define GRUB_DISK_SECTOR_BITS 9
|
|
|
|
/* The maximum number of disk caches. */
|
|
#define GRUB_DISK_CACHE_NUM 1021
|
|
|
|
/* The size of a disk cache in sector units. */
|
|
#define GRUB_DISK_CACHE_SIZE 8
|
|
#define GRUB_DISK_CACHE_BITS 3
|
|
|
|
/* This is called from the memory manager. */
|
|
void grub_disk_cache_invalidate_all (void);
|
|
|
|
void EXPORT_FUNC(grub_disk_dev_register) (grub_disk_dev_t dev);
|
|
void EXPORT_FUNC(grub_disk_dev_unregister) (grub_disk_dev_t dev);
|
|
int EXPORT_FUNC(grub_disk_dev_iterate) (int (*hook) (const char *name));
|
|
|
|
grub_disk_t EXPORT_FUNC(grub_disk_open) (const char *name);
|
|
void EXPORT_FUNC(grub_disk_close) (grub_disk_t disk);
|
|
grub_err_t EXPORT_FUNC(grub_disk_read) (grub_disk_t disk,
|
|
grub_disk_addr_t sector,
|
|
grub_off_t offset,
|
|
grub_size_t size,
|
|
char *buf);
|
|
grub_err_t EXPORT_FUNC(grub_disk_write) (grub_disk_t disk,
|
|
grub_disk_addr_t sector,
|
|
grub_off_t offset,
|
|
grub_size_t size,
|
|
const char *buf);
|
|
|
|
grub_uint64_t EXPORT_FUNC(grub_disk_get_size) (grub_disk_t disk);
|
|
|
|
#ifdef GRUB_UTIL
|
|
void grub_raid_init (void);
|
|
void grub_raid_fini (void);
|
|
void grub_lvm_init (void);
|
|
void grub_lvm_fini (void);
|
|
#endif
|
|
|
|
#endif /* ! GRUB_DISK_HEADER */
|