forked from Imagelibrary/rtems
9b4422a251
Script does what is expected and tries to do it as smartly as possible. + remove occurrences of two blank comment lines next to each other after Id string line removed. + remove entire comment blocks which only exited to contain CVS Ids + If the processing left a blank line at the top of a file, it was removed.
216 lines
6.2 KiB
C
216 lines
6.2 KiB
C
/**
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* @file rtems/ide_part_table.h
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*
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* Support for "MS-DOS-style" partition tables
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*/
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/*
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* Copyright (C) 2002 OKTET Ltd., St.-Petersburg, Russia
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*
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* Author: Konstantin Abramenko <Konstantin.Abramenko@oktet.ru>
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* Alexander Kukuta <Alexander.Kukuta@oktet.ru>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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*****************************************************************************/
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#ifndef _RTEMS_IDE_PART_TABLE_H
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#define _RTEMS_IDE_PART_TABLE_H
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#include <rtems/chain.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <rtems.h>
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#include <rtems/blkdev.h>
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#include <rtems/libio.h>
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#include <rtems/libio_.h>
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#include <rtems/bdbuf.h>
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#include <rtems/seterr.h>
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/* Minor base number for all logical devices */
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#define RTEMS_IDE_SECTOR_BITS 9
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#define RTEMS_IDE_SECTOR_SIZE 512
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#define RTEMS_IDE_PARTITION_DESCRIPTOR_SIZE 16
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#define RTEMS_IDE_PARTITION_MAX_PARTITION_NUMBER 63
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#define RTEMS_IDE_PARTITION_MAX_SUB_PARTITION_NUMBER 4
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#define RTEMS_IDE_PARTITION_DEV_NAME_LENGTH_MAX 16
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#define RTEMS_IDE_PARTITION_MSDOS_SIGNATURE_DATA1 0x55
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#define RTEMS_IDE_PARTITION_MSDOS_SIGNATURE_DATA2 0xaa
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#define RTEMS_IDE_PARTITION_MSDOS_SIGNATURE_OFFSET 0x1fe
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#define RTEMS_IDE_PARTITION_TABLE_OFFSET 0x1be
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#define RTEMS_IDE_PARTITION_TABLE_SIZE (4 * 16)
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#define RTEMS_IDE_PARTITION_BOOTABLE_OFFSET 0
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#define RTEMS_IDE_PARTITION_SYS_TYPE_OFFSET 4
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#define RTEMS_IDE_PARTITION_START_OFFSET 8
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#define RTEMS_IDE_PARTITION_SIZE_OFFSET 12
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/*
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* Conversion from and to little-endian byte order. (no-op on i386/i486)
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*/
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#if (CPU_BIG_ENDIAN == TRUE)
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# define LE_TO_CPU_U16(v) CPU_swap_u16(v)
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# define LE_TO_CPU_U32(v) CPU_swap_u32(v)
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# define CPU_TO_LE_U16(v) CPU_swap_u16(v)
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# define CPU_TO_LE_U32(v) CPU_swap_u32(v)
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#else
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# define LE_TO_CPU_U16(v) (v)
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# define LE_TO_CPU_U32(v) (v)
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# define CPU_TO_LE_U16(v) (v)
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# define CPU_TO_LE_U32(v) (v)
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#endif
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/*
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* sector_data_t --
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* corresponds to the sector on the device
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*/
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typedef struct rtems_sector_data_s
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{
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uint32_t sector_num; /* sector number on the device */
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uint8_t data[0]; /* raw sector data */
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} rtems_sector_data_t;
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/*
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* Enum partition types
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* see list at http://ata-atapi.com/hiwtab.htm
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*
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* @todo Should these have RTEMS before them.
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*/
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enum {
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EMPTY_PARTITION = 0x00,
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DOS_FAT12_PARTITION = 0x01,
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DOS_FAT16_PARTITION = 0x04,
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EXTENDED_PARTITION = 0x05,
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DOS_P32MB_PARTITION = 0x06,
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FAT32_PARTITION = 0x0B,
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FAT32_LBA_PARTITION = 0x0C,
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FAT16_LBA_PARTITION = 0x0E,
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DM6_PARTITION = 0x54,
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EZD_PARTITION = 0x55,
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DM6_AUX1PARTITION = 0x51,
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DM6_AUX3PARTITION = 0x53,
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LINUX_SWAP = 0x82,
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LINUX_NATIVE = 0x83,
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LINUX_EXTENDED = 0x85
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};
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/* Forward declaration */
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struct rtems_disk_desc_s;
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/*
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* part_desc_t --
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* contains all neccessary information about partition
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*/
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typedef struct rtems_part_desc_s {
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uint8_t bootable; /* is the partition active */
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uint8_t sys_type; /* type of partition */
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uint8_t log_id; /* logical number of partition */
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uint32_t start; /* first partition sector, in absolute
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* numeration */
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uint32_t size; /* size in sectors */
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uint32_t end; /* last partition sector, end = start + size - 1 */
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struct rtems_disk_desc_s *disk_desc; /* descriptor of disk, partition
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* contains in */
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struct rtems_part_desc_s *ext_part; /* extended partition containing this
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* one */
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/* partitions, containing in this one */
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struct rtems_part_desc_s *sub_part[RTEMS_IDE_PARTITION_MAX_SUB_PARTITION_NUMBER];
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} rtems_part_desc_t;
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typedef struct rtems_disk_desc_s {
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dev_t dev; /* device number */
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/* device name in /dev filesystem */
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char dev_name[RTEMS_IDE_PARTITION_DEV_NAME_LENGTH_MAX];
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uint32_t sector_size; /* size of sector */
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uint32_t sector_bits; /* the base-2 logarithm of sector_size */
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uint32_t lba_size; /* total amount of sectors in lba address mode */
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int last_log_id; /* used for logical disks enumerating */
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/* primary partition descriptors */
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rtems_part_desc_t *partitions[RTEMS_IDE_PARTITION_MAX_PARTITION_NUMBER];
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} rtems_disk_desc_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* rtems_ide_part_table_free --
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* frees disk descriptor structure
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*
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* PARAMETERS:
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* disk_desc - disc descriptor structure to free
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*
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* RETURNS:
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* N/A
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*/
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/**
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* @deprecated Use the @ref rtems_bdpart "block device partition module" instead.
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*/
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void rtems_ide_part_table_free(
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rtems_disk_desc_t *disk_desc
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) RTEMS_COMPILER_DEPRECATED_ATTRIBUTE;
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/*
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* rtems_ide_part_table_get --
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* reads partition table structure from the device
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* and creates disk description structure
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*
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* PARAMETERS:
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* dev_name - path to physical device in /dev filesystem
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* disk_desc - returned disc description structure
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*
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* RETURNS:
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* RTEMS_SUCCESSFUL if success, or -1 and corresponding errno else
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*/
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/**
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* @deprecated Use the @ref rtems_bdpart "block device partition module" instead.
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*/
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rtems_status_code rtems_ide_part_table_get(
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const char *dev_name,
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rtems_disk_desc_t *disk_desc
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) RTEMS_COMPILER_DEPRECATED_ATTRIBUTE;
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/*
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* rtems_ide_part_table_initialize --
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* initializes logical devices on the physical IDE drive
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*
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* PARAMETERS:
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* dev_name - path to physical device in /dev filesystem
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*
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* RETURNS:
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* RTEMS_SUCCESSFUL if success, or -1 and corresponding errno else
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*/
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/**
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* @deprecated Use the @ref rtems_bdpart "block device partition module" instead.
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*/
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rtems_status_code rtems_ide_part_table_initialize(
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const char *dev_name
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) RTEMS_COMPILER_DEPRECATED_ATTRIBUTE;
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RTEMS_IDE_PART_TABLE_H */
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