mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
b627b8d8e1
This commit is based on the s390-tools-1.39.0 version. Changes on top of s390-tools-1.39.0: - Add MIT license to all source files - Add LICENSE file - Transform REAMDE to README.md (markdown) - Add AUTHORS.md file - Add CONTRIBUTING.md file - Move changelog from README to CHANGELOG.md file Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
/*
|
|
* s390-tools/zipl/include/disk.h
|
|
* Functions to handle disk layout specific operations.
|
|
*
|
|
* Copyright IBM Corp. 2001, 2017
|
|
*
|
|
* s390-tools is free software; you can redistribute it and/or modify
|
|
* it under the terms of the MIT license. See LICENSE for details.
|
|
*
|
|
*/
|
|
|
|
#ifndef DISK_H
|
|
#define DISK_H
|
|
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "zipl.h"
|
|
|
|
|
|
/* Type for representing disk block numbers */
|
|
typedef uint64_t blocknum_t;
|
|
|
|
/* Pointer to block on a disk with cyl/head/sec layout */
|
|
struct disk_blockptr_chs {
|
|
int cyl;
|
|
int head;
|
|
int sec;
|
|
int size;
|
|
int blockct;
|
|
};
|
|
|
|
/* Pointer to a block on a disk with linear layout */
|
|
struct disk_blockptr_linear {
|
|
blocknum_t block;
|
|
int size;
|
|
int blockct;
|
|
};
|
|
|
|
/* Pointer to a block on disk */
|
|
typedef union {
|
|
struct disk_blockptr_chs chs;
|
|
struct disk_blockptr_linear linear;
|
|
} disk_blockptr_t;
|
|
|
|
/* Disk type identifier */
|
|
typedef enum {
|
|
disk_type_scsi,
|
|
disk_type_fba,
|
|
disk_type_diag,
|
|
disk_type_eckd_ldl,
|
|
disk_type_eckd_cdl,
|
|
} disk_type_t;
|
|
|
|
/* from linux/hdregs.h */
|
|
struct hd_geometry {
|
|
unsigned char heads;
|
|
unsigned char sectors;
|
|
unsigned short cylinders;
|
|
unsigned long start;
|
|
};
|
|
|
|
/* Disk information source */
|
|
typedef enum {
|
|
source_auto,
|
|
source_user,
|
|
source_script
|
|
} source_t;
|
|
|
|
/* targetbase definition */
|
|
typedef enum {
|
|
defined_as_device,
|
|
defined_as_name
|
|
} definition_t;
|
|
|
|
/* Disk information type */
|
|
struct disk_info {
|
|
disk_type_t type;
|
|
dev_t device;
|
|
dev_t partition;
|
|
int devno;
|
|
int partnum;
|
|
int phy_block_size;
|
|
int fs_block_size;
|
|
uint64_t phy_blocks;
|
|
struct hd_geometry geo;
|
|
char* name;
|
|
char* drv_name;
|
|
source_t source;
|
|
definition_t targetbase;
|
|
};
|
|
|
|
struct job_target_data;
|
|
|
|
int disk_get_info(const char* device, struct job_target_data* target,
|
|
struct disk_info** info);
|
|
int disk_is_tape(const char* device);
|
|
int disk_is_scsi(const char* device, struct job_target_data* target);
|
|
int disk_get_info_from_file(const char* filename,
|
|
struct job_target_data* target,
|
|
struct disk_info** info);
|
|
void disk_free_info(struct disk_info* info);
|
|
char* disk_get_type_name(disk_type_t type);
|
|
int disk_is_large_volume(struct disk_info* info);
|
|
int disk_cyl_from_blocknum(blocknum_t blocknum, struct disk_info* info);
|
|
int disk_head_from_blocknum(blocknum_t blocknum, struct disk_info* info);
|
|
int disk_sec_from_blocknum(blocknum_t blocknum, struct disk_info* info);
|
|
void disk_blockptr_from_blocknum(disk_blockptr_t* ptr, blocknum_t blocknum,
|
|
struct disk_info* info);
|
|
int disk_write_block_aligned(int fd, const void* data, size_t bytecount,
|
|
disk_blockptr_t* block, struct disk_info* info);
|
|
blocknum_t disk_write_block_buffer(int fd, int fd_is_basedisk,
|
|
const void* buffer, size_t bytecount,
|
|
disk_blockptr_t** blocklist,
|
|
struct disk_info* info);
|
|
void disk_print_devt(dev_t d);
|
|
void disk_print_info(struct disk_info* info);
|
|
int disk_is_zero_block(disk_blockptr_t* block, struct disk_info* info);
|
|
blocknum_t disk_compact_blocklist(disk_blockptr_t* list, blocknum_t count,
|
|
struct disk_info* info);
|
|
blocknum_t disk_get_blocklist_from_file(const char* filename,
|
|
disk_blockptr_t** blocklist,
|
|
struct disk_info* pinfo);
|
|
int disk_check_subchannel_set(int devno, dev_t device, char* dev_name);
|
|
void disk_print_geo(struct disk_info *data);
|
|
|
|
#endif /* not DISK_H */
|