2018-05-06 21:58:06 +00:00
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/* SPDX-License-Identifier: GPL-2.0+ */
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2002-03-08 21:31:05 +00:00
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/*
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2004-03-14 22:25:36 +00:00
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* (C) Copyright 2000-2004
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2002-03-08 21:31:05 +00:00
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#ifndef _PART_H
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#define _PART_H
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2007-02-20 08:04:34 +00:00
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2016-02-29 22:25:39 +00:00
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#include <blk.h>
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2004-04-18 17:39:38 +00:00
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#include <ide.h>
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2017-06-25 23:43:17 +00:00
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#include <uuid.h>
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2020-11-09 06:19:16 +00:00
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#include <linker_lists.h>
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2022-04-19 01:01:52 +00:00
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#include <linux/errno.h>
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2017-07-04 18:18:50 +00:00
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#include <linux/list.h>
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2002-03-08 21:31:05 +00:00
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2016-03-04 00:09:56 +00:00
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struct block_drvr {
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char *name;
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int (*select_hwpart)(int dev_num, int hwpart);
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};
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2013-04-09 21:11:56 +00:00
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#define LOG2(x) (((x & 0xaaaaaaaa) ? 1 : 0) + ((x & 0xcccccccc) ? 2 : 0) + \
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((x & 0xf0f0f0f0) ? 4 : 0) + ((x & 0xff00ff00) ? 8 : 0) + \
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((x & 0xffff0000) ? 16 : 0))
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#define LOG2_INVALID(type) ((type)((sizeof(type)<<3)-1))
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2013-04-09 06:03:36 +00:00
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2002-03-08 21:31:05 +00:00
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/* Part types */
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2004-03-14 22:25:36 +00:00
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#define PART_TYPE_UNKNOWN 0x00
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2002-03-08 21:31:05 +00:00
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#define PART_TYPE_MAC 0x01
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#define PART_TYPE_DOS 0x02
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#define PART_TYPE_ISO 0x03
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2004-03-14 22:25:36 +00:00
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#define PART_TYPE_AMIGA 0x04
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2008-09-26 15:13:22 +00:00
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#define PART_TYPE_EFI 0x05
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2002-11-19 11:04:11 +00:00
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2016-09-09 08:27:15 +00:00
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/* maximum number of partition entries supported by search */
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#define DOS_ENTRY_NUMBERS 8
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#define ISO_ENTRY_NUMBERS 64
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#define MAC_ENTRY_NUMBERS 64
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#define AMIGA_ENTRY_NUMBERS 8
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2003-06-29 21:03:46 +00:00
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/*
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* Type string for U-Boot bootable partitions
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*/
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#define BOOT_PART_TYPE "U-Boot" /* primary boot partition type */
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#define BOOT_PART_COMP "PPCBoot" /* PPCBoot compatibility type */
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2002-03-08 21:31:05 +00:00
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/* device types */
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2003-06-29 21:03:46 +00:00
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#define DEV_TYPE_UNKNOWN 0xff /* not connected */
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#define DEV_TYPE_HARDDISK 0x00 /* harddisk */
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2004-03-14 22:25:36 +00:00
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#define DEV_TYPE_TAPE 0x01 /* Tape */
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#define DEV_TYPE_CDROM 0x05 /* CD-ROM */
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#define DEV_TYPE_OPDISK 0x07 /* optical disk */
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2002-03-08 21:31:05 +00:00
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2017-06-25 23:43:18 +00:00
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#define PART_NAME_LEN 32
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#define PART_TYPE_LEN 32
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2022-01-11 15:03:38 +00:00
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#define MAX_SEARCH_PARTITIONS 128
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2017-06-25 23:43:18 +00:00
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2020-03-19 12:49:34 +00:00
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#define PART_BOOTABLE ((int)BIT(0))
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#define PART_EFI_SYSTEM_PARTITION ((int)BIT(1))
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2020-05-10 17:39:57 +00:00
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struct disk_partition {
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2013-06-26 16:11:25 +00:00
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lbaint_t start; /* # of first block in partition */
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lbaint_t size; /* number of blocks in partition */
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2002-03-08 21:31:05 +00:00
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ulong blksz; /* block size in bytes */
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2017-06-25 23:43:18 +00:00
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uchar name[PART_NAME_LEN]; /* partition name */
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uchar type[PART_TYPE_LEN]; /* string type description */
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2020-03-19 12:49:34 +00:00
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/*
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* The bootable is a bitmask with the following fields:
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*
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* PART_BOOTABLE the MBR bootable flag is set
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* PART_EFI_SYSTEM_PARTITION the partition is an EFI system partition
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*/
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int bootable;
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2017-01-27 10:00:42 +00:00
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#if CONFIG_IS_ENABLED(PARTITION_UUIDS)
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2017-06-25 23:43:17 +00:00
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char uuid[UUID_STR_LEN + 1]; /* filesystem UUID as string, if exists */
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2012-09-21 09:50:59 +00:00
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#endif
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2015-10-27 10:00:27 +00:00
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#ifdef CONFIG_PARTITION_TYPE_GUID
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2017-06-25 23:43:17 +00:00
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char type_guid[UUID_STR_LEN + 1]; /* type GUID as string, if exists */
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2015-10-27 10:00:27 +00:00
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#endif
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2017-02-11 01:15:34 +00:00
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#ifdef CONFIG_DOS_PARTITION
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2021-09-27 15:42:39 +00:00
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uchar sys_ind; /* partition type */
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2017-02-11 01:15:34 +00:00
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#endif
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2020-05-10 17:39:57 +00:00
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};
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2002-03-08 21:31:05 +00:00
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2017-07-04 18:18:50 +00:00
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struct disk_part {
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int partnum;
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2020-05-10 17:39:57 +00:00
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struct disk_partition gpt_part_info;
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2017-07-04 18:18:50 +00:00
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struct list_head list;
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};
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2007-02-20 08:04:34 +00:00
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/* Misc _get_dev functions */
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2022-04-19 01:01:53 +00:00
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#if CONFIG_IS_ENABLED(PARTITIONS)
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2016-02-29 22:25:41 +00:00
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/**
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2016-02-29 22:25:42 +00:00
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* blk_get_dev() - get a pointer to a block device given its type and number
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2016-02-29 22:25:41 +00:00
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*
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* Each interface allocates its own devices and typically struct blk_desc is
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* contained with the interface's data structure. There is no global
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* numbering for block devices, so the interface name must be provided.
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*
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* @ifname: Interface name (e.g. "ide", "scsi")
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* @dev: Device number (0 for first device on that interface, 1 for
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* second, etc.
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2022-01-19 17:05:50 +00:00
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* Return: pointer to the block device, or NULL if not available, or an
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2016-02-29 22:25:41 +00:00
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* error occurred.
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*/
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2016-02-29 22:25:42 +00:00
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struct blk_desc *blk_get_dev(const char *ifname, int dev);
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2016-02-29 22:25:41 +00:00
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2016-02-29 22:25:34 +00:00
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struct blk_desc *mg_disk_get_dev(int dev);
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2007-02-20 08:04:34 +00:00
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2023-07-03 13:39:54 +00:00
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/**
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* part_get_info_by_type() - Get partitions from a block device using a specific
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* partition driver
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*
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* Each interface allocates its own devices and typically struct blk_desc is
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* contained with the interface's data structure. There is no global
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* numbering for block devices, so the interface name must be provided.
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*
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* @dev_desc: Block device descriptor
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* @part: Partition number to read
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* @part_type: Partition driver to use, or PART_TYPE_UNKNOWN to automatically
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* choose a driver
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* @info: Returned partition information
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*
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* Return: 0 on success, negative errno on failure
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*/
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int part_get_info_by_type(struct blk_desc *dev_desc, int part, int part_type,
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struct disk_partition *info);
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2020-05-10 17:39:57 +00:00
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int part_get_info(struct blk_desc *dev_desc, int part,
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struct disk_partition *info);
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2017-09-09 17:15:55 +00:00
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/**
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* part_get_info_whole_disk() - get partition info for the special case of
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* a partition occupying the entire disk.
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*/
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2020-05-10 17:39:57 +00:00
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int part_get_info_whole_disk(struct blk_desc *dev_desc,
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struct disk_partition *info);
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2017-09-09 17:15:55 +00:00
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2016-02-29 22:25:48 +00:00
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void part_print(struct blk_desc *dev_desc);
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void part_init(struct blk_desc *dev_desc);
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2016-02-29 22:25:34 +00:00
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void dev_print(struct blk_desc *dev_desc);
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2016-02-29 22:25:43 +00:00
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/**
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* blk_get_device_by_str() - Get a block device given its interface/hw partition
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*
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* Each interface allocates its own devices and typically struct blk_desc is
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* contained with the interface's data structure. There is no global
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* numbering for block devices, so the interface name must be provided.
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*
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* The hardware parition is not related to the normal software partitioning
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* of a device - each hardware partition is effectively a separately
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* accessible block device. When a hardware parition is selected on MMC the
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* other hardware partitions become inaccessible. The same block device is
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* used to access all hardware partitions, but its capacity may change when a
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* different hardware partition is selected.
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*
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* When a hardware partition number is given, the block device switches to
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* that hardware partition.
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*
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* @ifname: Interface name (e.g. "ide", "scsi")
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* @dev_str: Device and optional hw partition. This can either be a string
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* containing the device number (e.g. "2") or the device number
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* and hardware partition number (e.g. "2.4") for devices that
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* support it (currently only MMC).
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* @dev_desc: Returns a pointer to the block device on success
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2022-01-19 17:05:50 +00:00
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* Return: block device number (local to the interface), or -1 on error
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2016-02-29 22:25:43 +00:00
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*/
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int blk_get_device_by_str(const char *ifname, const char *dev_str,
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struct blk_desc **dev_desc);
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2016-02-29 22:25:44 +00:00
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/**
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* blk_get_device_part_str() - Get a block device and partition
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*
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* This calls blk_get_device_by_str() to look up a device. It also looks up
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* a partition and returns information about it.
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*
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* @dev_part_str is in the format:
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* <dev>.<hw_part>:<part> where <dev> is the device number,
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* <hw_part> is the optional hardware partition number and
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* <part> is the partition number
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*
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* If ifname is "hostfs" then this function returns the sandbox host block
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* device.
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*
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* If ifname is ubi, then this function returns 0, with @info set to a
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* special UBI device.
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*
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* If @dev_part_str is NULL or empty or "-", then this function looks up
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* the "bootdevice" environment variable and uses that string instead.
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*
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* If the partition string is empty then the first partition is used. If the
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* partition string is "auto" then the first bootable partition is used.
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*
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* @ifname: Interface name (e.g. "ide", "scsi")
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* @dev_part_str: Device and partition string
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* @dev_desc: Returns a pointer to the block device on success
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* @info: Returns partition information
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* @allow_whole_dev: true to allow the user to select partition 0
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* (which means the whole device), false to require a valid
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* partition number >= 1
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2022-01-19 17:05:50 +00:00
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* Return: partition number, or -1 on error
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2016-02-29 22:25:44 +00:00
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*
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*/
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int blk_get_device_part_str(const char *ifname, const char *dev_part_str,
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struct blk_desc **dev_desc,
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2020-05-10 17:39:57 +00:00
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struct disk_partition *info, int allow_whole_dev);
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2016-09-09 08:27:15 +00:00
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2017-09-21 22:51:58 +00:00
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/**
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* part_get_info_by_name_type() - Search for a partition by name
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* for only specified partition type
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*
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* @param dev_desc - block device descriptor
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* @param gpt_name - the specified table entry name
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* @param info - returns the disk partition info
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* @param part_type - only search in partitions of this type
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*
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2022-01-19 17:05:50 +00:00
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* Return: - the partition number on match (starting on 1), -1 on no match,
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2017-09-21 22:51:58 +00:00
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* otherwise error
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*/
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int part_get_info_by_name_type(struct blk_desc *dev_desc, const char *name,
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2020-05-10 17:39:57 +00:00
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struct disk_partition *info, int part_type);
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2017-09-21 22:51:58 +00:00
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2016-09-09 08:27:15 +00:00
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/**
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* part_get_info_by_name() - Search for a partition by name
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* among all available registered partitions
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*
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* @param dev_desc - block device descriptor
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* @param gpt_name - the specified table entry name
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* @param info - returns the disk partition info
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*
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2022-01-19 17:05:50 +00:00
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* Return: - the partition number on match (starting on 1), -1 on no match,
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2017-04-02 08:49:50 +00:00
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* otherwise error
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2016-09-09 08:27:15 +00:00
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*/
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int part_get_info_by_name(struct blk_desc *dev_desc,
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2020-05-10 17:39:57 +00:00
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const char *name, struct disk_partition *info);
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2016-09-09 08:27:15 +00:00
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2019-07-05 12:37:31 +00:00
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/**
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* Get partition info from dev number + part name, or dev number + part number.
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*
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* Parse a device number and partition description (either name or number)
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* in the form of device number plus partition name separated by a "#"
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* (like "device_num#partition_name") or a device number plus a partition number
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* separated by a ":". For example both "0#misc" and "0:1" can be valid
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* partition descriptions for a given interface. If the partition is found, sets
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* dev_desc and part_info accordingly with the information of the partition.
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*
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* @param[in] dev_iface Device interface
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* @param[in] dev_part_str Input partition description, like "0#misc" or "0:1"
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* @param[out] dev_desc Place to store the device description pointer
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* @param[out] part_info Place to store the partition information
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2021-02-05 14:38:56 +00:00
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* @param[in] allow_whole_dev true to allow the user to select partition 0
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* (which means the whole device), false to require a valid
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* partition number >= 1
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2022-01-19 17:05:50 +00:00
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* Return: the partition number on success, or negative errno on error
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2019-07-05 12:37:31 +00:00
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*/
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int part_get_info_by_dev_and_name_or_num(const char *dev_iface,
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const char *dev_part_str,
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struct blk_desc **dev_desc,
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2021-02-05 14:38:56 +00:00
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struct disk_partition *part_info,
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int allow_whole_dev);
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2019-07-05 12:37:31 +00:00
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2016-09-09 08:27:17 +00:00
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/**
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* part_set_generic_name() - create generic partition like hda1 or sdb2
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*
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* Helper function for partition tables, which don't hold partition names
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* (DOS, ISO). Generates partition name out of the device type and partition
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* number.
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*
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* @dev_desc: pointer to the block device
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* @part_num: partition number for which the name is generated
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* @name: buffer where the name is written
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*/
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void part_set_generic_name(const struct blk_desc *dev_desc,
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int part_num, char *name);
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2016-03-04 00:09:56 +00:00
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extern const struct block_drvr block_drvr[];
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2011-05-24 05:31:19 +00:00
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#else
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2016-02-29 22:25:42 +00:00
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static inline struct blk_desc *blk_get_dev(const char *ifname, int dev)
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2012-09-21 04:08:17 +00:00
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{ return NULL; }
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2016-02-29 22:25:34 +00:00
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static inline struct blk_desc *mg_disk_get_dev(int dev) { return NULL; }
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2002-03-08 21:31:05 +00:00
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|
|
2016-02-29 22:25:48 +00:00
|
|
|
static inline int part_get_info(struct blk_desc *dev_desc, int part,
|
2020-05-10 17:39:57 +00:00
|
|
|
struct disk_partition *info) { return -1; }
|
2017-09-09 17:15:55 +00:00
|
|
|
static inline int part_get_info_whole_disk(struct blk_desc *dev_desc,
|
2020-05-10 17:39:57 +00:00
|
|
|
struct disk_partition *info)
|
2017-09-09 17:15:55 +00:00
|
|
|
{ return -1; }
|
2016-02-29 22:25:48 +00:00
|
|
|
static inline void part_print(struct blk_desc *dev_desc) {}
|
|
|
|
static inline void part_init(struct blk_desc *dev_desc) {}
|
2016-02-29 22:25:34 +00:00
|
|
|
static inline void dev_print(struct blk_desc *dev_desc) {}
|
2016-02-29 22:25:43 +00:00
|
|
|
static inline int blk_get_device_by_str(const char *ifname, const char *dev_str,
|
|
|
|
struct blk_desc **dev_desc)
|
2012-09-21 09:50:56 +00:00
|
|
|
{ return -1; }
|
2016-02-29 22:25:44 +00:00
|
|
|
static inline int blk_get_device_part_str(const char *ifname,
|
2020-05-10 17:39:57 +00:00
|
|
|
const char *dev_part_str,
|
|
|
|
struct blk_desc **dev_desc,
|
|
|
|
struct disk_partition *info,
|
|
|
|
int allow_whole_dev)
|
2012-09-21 04:08:17 +00:00
|
|
|
{ *dev_desc = NULL; return -1; }
|
2022-04-19 01:01:54 +00:00
|
|
|
|
|
|
|
static inline int part_get_info_by_name_type(struct blk_desc *dev_desc,
|
|
|
|
const char *name,
|
|
|
|
struct disk_partition *info,
|
|
|
|
int part_type)
|
|
|
|
{
|
|
|
|
return -ENOENT;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int part_get_info_by_name(struct blk_desc *dev_desc,
|
|
|
|
const char *name,
|
|
|
|
struct disk_partition *info)
|
|
|
|
{
|
|
|
|
return -ENOENT;
|
|
|
|
}
|
|
|
|
|
2021-04-12 22:53:05 +00:00
|
|
|
static inline int
|
|
|
|
part_get_info_by_dev_and_name_or_num(const char *dev_iface,
|
|
|
|
const char *dev_part_str,
|
|
|
|
struct blk_desc **dev_desc,
|
|
|
|
struct disk_partition *part_info,
|
|
|
|
int allow_whole_dev)
|
|
|
|
{
|
|
|
|
*dev_desc = NULL;
|
|
|
|
return -ENOSYS;
|
|
|
|
}
|
2011-05-24 05:31:19 +00:00
|
|
|
#endif
|
2002-03-08 21:31:05 +00:00
|
|
|
|
2023-01-17 17:47:41 +00:00
|
|
|
/**
|
|
|
|
* part_get_bootable() - Find the first bootable partition
|
|
|
|
*
|
|
|
|
* @desc: Block-device descriptor
|
|
|
|
* @return first bootable partition, or 0 if there is none
|
|
|
|
*/
|
|
|
|
int part_get_bootable(struct blk_desc *desc);
|
|
|
|
|
2022-04-19 01:05:09 +00:00
|
|
|
struct udevice;
|
|
|
|
/**
|
|
|
|
* part_create_block_devices - Create block devices for disk partitions
|
|
|
|
*
|
|
|
|
* Create UCLASS_PARTITION udevices for each of disk partitions in @parent
|
|
|
|
*
|
|
|
|
* @blk_dev: Whole disk device
|
|
|
|
*/
|
|
|
|
int part_create_block_devices(struct udevice *blk_dev);
|
|
|
|
|
2022-10-21 00:22:52 +00:00
|
|
|
/**
|
|
|
|
* disk_blk_read() - read blocks from a disk partition
|
|
|
|
*
|
|
|
|
* @dev: Device to read from (UCLASS_PARTITION)
|
|
|
|
* @start: Start block number to read in the partition (0=first)
|
|
|
|
* @blkcnt: Number of blocks to read
|
|
|
|
* @buffer: Destination buffer for data read
|
|
|
|
* Returns: number of blocks read, or -ve error number (see the
|
|
|
|
* IS_ERR_VALUE() macro
|
|
|
|
*/
|
|
|
|
ulong disk_blk_read(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
|
|
|
|
void *buffer);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* disk_blk_write() - write to a disk partition
|
|
|
|
*
|
|
|
|
* @dev: Device to write to (UCLASS_PARTITION)
|
|
|
|
* @start: Start block number to write in the partition (0=first)
|
|
|
|
* @blkcnt: Number of blocks to write
|
|
|
|
* @buffer: Source buffer for data to write
|
|
|
|
* Returns: number of blocks written, or -ve error number (see the
|
|
|
|
* IS_ERR_VALUE() macro
|
|
|
|
*/
|
|
|
|
ulong disk_blk_write(struct udevice *dev, lbaint_t start, lbaint_t blkcnt,
|
|
|
|
const void *buffer);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* disk_blk_erase() - erase a section of a disk partition
|
|
|
|
*
|
|
|
|
* @dev: Device to (partially) erase (UCLASS_PARTITION)
|
|
|
|
* @start: Start block number to erase in the partition (0=first)
|
|
|
|
* @blkcnt: Number of blocks to erase
|
|
|
|
* Returns: number of blocks erased, or -ve error number (see the
|
|
|
|
* IS_ERR_VALUE() macro
|
|
|
|
*/
|
|
|
|
ulong disk_blk_erase(struct udevice *dev, lbaint_t start, lbaint_t blkcnt);
|
dm: disk: add read/write interfaces with udevice
In include/blk.h, Simon suggested:
===>
/*
* These functions should take struct udevice instead of struct blk_desc,
* but this is convenient for migration to driver model. Add a 'd' prefix
* to the function operations, so that blk_read(), etc. can be reserved for
* functions with the correct arguments.
*/
unsigned long blk_dread(struct blk_desc *block_dev, lbaint_t start,
lbaint_t blkcnt, void *buffer);
unsigned long blk_dwrite(struct blk_desc *block_dev, lbaint_t start,
lbaint_t blkcnt, const void *buffer);
unsigned long blk_derase(struct blk_desc *block_dev, lbaint_t start,
lbaint_t blkcnt);
<===
So new interfaces are provided with this patch.
They are expected to be used everywhere in U-Boot at the end.
The exceptions are block device drivers, partition drivers and efi_disk
which should know details of blk_desc structure.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
2022-04-19 01:05:16 +00:00
|
|
|
|
2016-02-29 22:25:47 +00:00
|
|
|
/*
|
|
|
|
* We don't support printing partition information in SPL and only support
|
|
|
|
* getting partition information in a few cases.
|
|
|
|
*/
|
|
|
|
#ifdef CONFIG_SPL_BUILD
|
|
|
|
# define part_print_ptr(x) NULL
|
2019-01-23 06:20:05 +00:00
|
|
|
# if defined(CONFIG_SPL_FS_EXT4) || defined(CONFIG_SPL_FS_FAT) || \
|
2016-02-29 22:25:47 +00:00
|
|
|
defined(CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION)
|
|
|
|
# define part_get_info_ptr(x) x
|
|
|
|
# else
|
|
|
|
# define part_get_info_ptr(x) NULL
|
|
|
|
# endif
|
|
|
|
#else
|
|
|
|
#define part_print_ptr(x) x
|
|
|
|
#define part_get_info_ptr(x) x
|
2002-03-08 21:31:05 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
|
2016-02-29 22:25:47 +00:00
|
|
|
struct part_driver {
|
|
|
|
const char *name;
|
|
|
|
int part_type;
|
2016-09-09 08:27:15 +00:00
|
|
|
const int max_entries; /* maximum number of entries to search */
|
2002-03-08 21:31:05 +00:00
|
|
|
|
2016-02-29 22:25:47 +00:00
|
|
|
/**
|
|
|
|
* get_info() - Get information about a partition
|
|
|
|
*
|
|
|
|
* @dev_desc: Block device descriptor
|
|
|
|
* @part: Partition number (1 = first)
|
|
|
|
* @info: Returns partition information
|
|
|
|
*/
|
|
|
|
int (*get_info)(struct blk_desc *dev_desc, int part,
|
2020-05-10 17:39:57 +00:00
|
|
|
struct disk_partition *info);
|
2016-02-29 22:25:47 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* print() - Print partition information
|
|
|
|
*
|
|
|
|
* @dev_desc: Block device descriptor
|
|
|
|
*/
|
|
|
|
void (*print)(struct blk_desc *dev_desc);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* test() - Test if a device contains this partition type
|
|
|
|
*
|
|
|
|
* @dev_desc: Block device descriptor
|
|
|
|
* @return 0 if the block device appears to contain this partition
|
|
|
|
* type, -ve if not
|
|
|
|
*/
|
|
|
|
int (*test)(struct blk_desc *dev_desc);
|
|
|
|
};
|
|
|
|
|
|
|
|
/* Declare a new U-Boot partition 'driver' */
|
|
|
|
#define U_BOOT_PART_TYPE(__name) \
|
|
|
|
ll_entry_declare(struct part_driver, __name, part_driver)
|
2002-11-19 11:04:11 +00:00
|
|
|
|
2012-12-11 10:09:46 +00:00
|
|
|
#include <part_efi.h>
|
2017-09-13 22:05:24 +00:00
|
|
|
|
|
|
|
#if CONFIG_IS_ENABLED(EFI_PARTITION)
|
2008-09-26 15:13:22 +00:00
|
|
|
/* disk/part_efi.c */
|
2012-12-11 10:09:46 +00:00
|
|
|
/**
|
|
|
|
* write_gpt_table() - Write the GUID Partition Table to disk
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
* @param gpt_h - pointer to GPT header representation
|
|
|
|
* @param gpt_e - pointer to GPT partition table entries
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: - zero on success, otherwise error
|
2012-12-11 10:09:46 +00:00
|
|
|
*/
|
2016-02-29 22:25:34 +00:00
|
|
|
int write_gpt_table(struct blk_desc *dev_desc,
|
2012-12-11 10:09:46 +00:00
|
|
|
gpt_header *gpt_h, gpt_entry *gpt_e);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gpt_fill_pte(): Fill the GPT partition table entry
|
|
|
|
*
|
2017-08-23 14:01:32 +00:00
|
|
|
* @param dev_desc - block device descriptor
|
2012-12-11 10:09:46 +00:00
|
|
|
* @param gpt_h - GPT header representation
|
|
|
|
* @param gpt_e - GPT partition table entries
|
|
|
|
* @param partitions - list of partitions
|
|
|
|
* @param parts - number of partitions
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: zero on success
|
2012-12-11 10:09:46 +00:00
|
|
|
*/
|
2017-08-23 14:01:32 +00:00
|
|
|
int gpt_fill_pte(struct blk_desc *dev_desc,
|
|
|
|
gpt_header *gpt_h, gpt_entry *gpt_e,
|
2020-05-10 17:39:57 +00:00
|
|
|
struct disk_partition *partitions, int parts);
|
2012-12-11 10:09:46 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* gpt_fill_header(): Fill the GPT header
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
* @param gpt_h - GPT header representation
|
|
|
|
* @param str_guid - disk guid string representation
|
|
|
|
* @param parts_count - number of partitions
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: - error on str_guid conversion error
|
2012-12-11 10:09:46 +00:00
|
|
|
*/
|
2016-02-29 22:25:34 +00:00
|
|
|
int gpt_fill_header(struct blk_desc *dev_desc, gpt_header *gpt_h,
|
2012-12-11 10:09:46 +00:00
|
|
|
char *str_guid, int parts_count);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* gpt_restore(): Restore GPT partition table
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
* @param str_disk_guid - disk GUID
|
|
|
|
* @param partitions - list of partitions
|
|
|
|
* @param parts - number of partitions
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: zero on success
|
2012-12-11 10:09:46 +00:00
|
|
|
*/
|
2016-02-29 22:25:34 +00:00
|
|
|
int gpt_restore(struct blk_desc *dev_desc, char *str_disk_guid,
|
2020-05-10 17:39:57 +00:00
|
|
|
struct disk_partition *partitions, const int parts_count);
|
2014-12-12 23:51:54 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* is_valid_gpt_buf() - Ensure that the Primary GPT information is valid
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
* @param buf - buffer which contains the MBR and Primary GPT info
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: - '0' on success, otherwise error
|
2014-12-12 23:51:54 +00:00
|
|
|
*/
|
2016-02-29 22:25:34 +00:00
|
|
|
int is_valid_gpt_buf(struct blk_desc *dev_desc, void *buf);
|
2014-12-12 23:51:54 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* write_mbr_and_gpt_partitions() - write MBR, Primary GPT and Backup GPT
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
* @param buf - buffer which contains the MBR and Primary GPT info
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: - '0' on success, otherwise error
|
2014-12-12 23:51:54 +00:00
|
|
|
*/
|
2016-02-29 22:25:34 +00:00
|
|
|
int write_mbr_and_gpt_partitions(struct blk_desc *dev_desc, void *buf);
|
2015-11-20 07:06:16 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* gpt_verify_headers() - Function to read and CRC32 check of the GPT's header
|
|
|
|
* and partition table entries (PTE)
|
|
|
|
*
|
|
|
|
* As a side effect if sets gpt_head and gpt_pte so they point to GPT data.
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
* @param gpt_head - pointer to GPT header data read from medium
|
|
|
|
* @param gpt_pte - pointer to GPT partition table enties read from medium
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: - '0' on success, otherwise error
|
2015-11-20 07:06:16 +00:00
|
|
|
*/
|
2016-02-29 22:25:34 +00:00
|
|
|
int gpt_verify_headers(struct blk_desc *dev_desc, gpt_header *gpt_head,
|
2015-11-20 07:06:16 +00:00
|
|
|
gpt_entry **gpt_pte);
|
|
|
|
|
2022-04-22 15:46:48 +00:00
|
|
|
/**
|
|
|
|
* gpt_repair_headers() - Function to repair the GPT's header
|
|
|
|
* and partition table entries (PTE)
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
*
|
|
|
|
* Return: - '0' on success, otherwise error
|
|
|
|
*/
|
|
|
|
int gpt_repair_headers(struct blk_desc *dev_desc);
|
|
|
|
|
2015-11-20 07:06:16 +00:00
|
|
|
/**
|
|
|
|
* gpt_verify_partitions() - Function to check if partitions' name, start and
|
|
|
|
* size correspond to '$partitions' env variable
|
|
|
|
*
|
|
|
|
* This function checks if on medium stored GPT data is in sync with information
|
|
|
|
* provided in '$partitions' environment variable. Specificially, name, start
|
|
|
|
* and size of the partition is checked.
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
* @param partitions - partition data read from '$partitions' env variable
|
|
|
|
* @param parts - number of partitions read from '$partitions' env variable
|
|
|
|
* @param gpt_head - pointer to GPT header data read from medium
|
|
|
|
* @param gpt_pte - pointer to GPT partition table enties read from medium
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: - '0' on success, otherwise error
|
2015-11-20 07:06:16 +00:00
|
|
|
*/
|
2016-02-29 22:25:34 +00:00
|
|
|
int gpt_verify_partitions(struct blk_desc *dev_desc,
|
2020-05-10 17:39:57 +00:00
|
|
|
struct disk_partition *partitions, int parts,
|
2015-11-20 07:06:16 +00:00
|
|
|
gpt_header *gpt_head, gpt_entry **gpt_pte);
|
2017-06-25 23:43:23 +00:00
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* get_disk_guid() - Function to read the GUID string from a device's GPT
|
|
|
|
*
|
|
|
|
* This function reads the GUID string from a block device whose descriptor
|
|
|
|
* is provided.
|
|
|
|
*
|
|
|
|
* @param dev_desc - block device descriptor
|
|
|
|
* @param guid - pre-allocated string in which to return the GUID
|
|
|
|
*
|
2022-01-19 17:05:50 +00:00
|
|
|
* Return: - '0' on success, otherwise error
|
2017-06-25 23:43:23 +00:00
|
|
|
*/
|
|
|
|
int get_disk_guid(struct blk_desc *dev_desc, char *guid);
|
|
|
|
|
2008-09-26 15:13:22 +00:00
|
|
|
#endif
|
|
|
|
|
2017-01-27 10:00:37 +00:00
|
|
|
#if CONFIG_IS_ENABLED(DOS_PARTITION)
|
2016-09-09 08:27:16 +00:00
|
|
|
/**
|
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* is_valid_dos_buf() - Ensure that a DOS MBR image is valid
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*
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* @param buf - buffer which contains the MBR
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*
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2022-01-19 17:05:50 +00:00
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* Return: - '0' on success, otherwise error
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2016-09-09 08:27:16 +00:00
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*/
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int is_valid_dos_buf(void *buf);
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/**
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2020-12-23 12:55:10 +00:00
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* write_mbr_sector() - write DOS MBR
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2016-09-09 08:27:16 +00:00
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*
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* @param dev_desc - block device descriptor
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* @param buf - buffer which contains the MBR
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*
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2022-01-19 17:05:50 +00:00
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* Return: - '0' on success, otherwise error
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2016-09-09 08:27:16 +00:00
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*/
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2020-12-23 12:55:10 +00:00
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int write_mbr_sector(struct blk_desc *dev_desc, void *buf);
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2016-09-09 08:27:16 +00:00
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2020-12-23 12:55:14 +00:00
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int write_mbr_partitions(struct blk_desc *dev,
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struct disk_partition *p, int count, unsigned int disksig);
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int layout_mbr_partitions(struct disk_partition *p, int count,
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lbaint_t total_sectors);
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2016-09-09 08:27:16 +00:00
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#endif
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2022-04-19 01:01:53 +00:00
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#if CONFIG_IS_ENABLED(PARTITIONS)
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2020-11-09 06:19:16 +00:00
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/**
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* part_driver_get_count() - get partition driver count
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*
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2022-01-19 17:05:50 +00:00
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* Return: - number of partition drivers
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2020-11-09 06:19:16 +00:00
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*/
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static inline int part_driver_get_count(void)
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{
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return ll_entry_count(struct part_driver, part_driver);
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}
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/**
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* part_driver_get_first() - get first partition driver
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*
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2022-01-19 17:05:50 +00:00
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* Return: - pointer to first partition driver on success, otherwise NULL
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2020-11-09 06:19:16 +00:00
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*/
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static inline struct part_driver *part_driver_get_first(void)
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{
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return ll_entry_start(struct part_driver, part_driver);
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}
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2023-07-16 03:38:47 +00:00
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/**
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* part_get_type_by_name() - Get partition type by name
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*
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* @name: Name of partition type to look up (not case-sensitive)
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* Returns: Corresponding partition type (PART_TYPE_...) or PART_TYPE_UNKNOWN if
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* not known
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*/
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int part_get_type_by_name(const char *name);
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2020-11-09 06:19:16 +00:00
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#else
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static inline int part_driver_get_count(void)
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{ return 0; }
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static inline struct part_driver *part_driver_get_first(void)
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{ return NULL; }
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#endif /* CONFIG_PARTITIONS */
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2016-09-09 08:27:16 +00:00
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2002-03-08 21:31:05 +00:00
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#endif /* _PART_H */
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