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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>
351 lines
11 KiB
C
351 lines
11 KiB
C
/*
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* dasdfmt - Format DASD ECKD devices for use by Linux
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*
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* Copyright IBM Corp. 2002, 2017
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef DASDFMT_H
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#define DASDFMT_H
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#include <ctype.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <limits.h>
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#include <limits.h>
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#include <mntent.h>
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#include <signal.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 <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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/****************************************************************************
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* SECTION: Definition needed for DASD-API (see dasd.h) *
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****************************************************************************/
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#define DASD_IOCTL_LETTER 'D'
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/*
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* struct dasd_information2_t
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* represents any data about the device, which is visible to userspace.
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* including format and features.
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*/
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typedef struct dasd_information2_t {
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unsigned int devno; /* S/390 devno */
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unsigned int real_devno; /* for aliases */
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unsigned int schid; /* S/390 subchannel identifier */
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unsigned int cu_type : 16; /* from SenseID */
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unsigned int cu_model : 8; /* from SenseID */
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unsigned int dev_type : 16; /* from SenseID */
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unsigned int dev_model : 8; /* from SenseID */
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unsigned int open_count;
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unsigned int req_queue_len;
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unsigned int chanq_len; /* length of chanq */
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char type[4]; /* from discipline.name, */
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/* 'none' for unknown */
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unsigned int status; /* current device level */
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unsigned int label_block; /* where to find the VOLSER */
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unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
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unsigned int characteristics_size;
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unsigned int confdata_size;
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char characteristics[64]; /* from read_device_characteristics */
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char configuration_data[256]; /* from read_configuration_data */
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unsigned int format; /* format info like formatted/cdl/ldl/... */
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unsigned int features; /* dasd features like 'ro',... */
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unsigned int reserved0; /* reserved for further use ,... */
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unsigned int reserved1; /* reserved for further use ,... */
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unsigned int reserved2; /* reserved for further use ,... */
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unsigned int reserved3; /* reserved for further use ,... */
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unsigned int reserved4; /* reserved for further use ,... */
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unsigned int reserved5; /* reserved for further use ,... */
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unsigned int reserved6; /* reserved for further use ,... */
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unsigned int reserved7; /* reserved for further use ,... */
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} dasd_information2_t;
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struct dasd_eckd_characteristics {
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unsigned short cu_type;
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struct {
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unsigned char support:2;
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unsigned char async:1;
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unsigned char reserved:1;
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unsigned char cache_info:1;
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unsigned char model:3;
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} __attribute__ ((packed)) cu_model;
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unsigned short dev_type;
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unsigned char dev_model;
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struct {
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unsigned char mult_burst:1;
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unsigned char RT_in_LR:1;
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unsigned char reserved1:1;
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unsigned char RD_IN_LR:1;
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unsigned char reserved2:4;
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unsigned char reserved3:8;
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unsigned char defect_wr:1;
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unsigned char XRC_supported:1;
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unsigned char reserved4:1;
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unsigned char striping:1;
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unsigned char reserved5:4;
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unsigned char cfw:1;
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unsigned char reserved6:2;
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unsigned char cache:1;
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unsigned char dual_copy:1;
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unsigned char dfw:1;
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unsigned char reset_alleg:1;
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unsigned char sense_down:1;
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} __attribute__ ((packed)) facilities;
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unsigned char dev_class;
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unsigned char unit_type;
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unsigned short no_cyl;
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unsigned short trk_per_cyl;
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unsigned char sec_per_trk;
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unsigned char byte_per_track[3];
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unsigned short home_bytes;
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unsigned char formula;
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union {
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struct {
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unsigned char f1;
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unsigned short f2;
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unsigned short f3;
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} __attribute__ ((packed)) f_0x01;
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struct {
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unsigned char f1;
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unsigned char f2;
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unsigned char f3;
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unsigned char f4;
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unsigned char f5;
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} __attribute__ ((packed)) f_0x02;
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} __attribute__ ((packed)) factors;
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unsigned short first_alt_trk;
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unsigned short no_alt_trk;
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unsigned short first_dia_trk;
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unsigned short no_dia_trk;
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unsigned short first_sup_trk;
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unsigned short no_sup_trk;
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unsigned char MDR_ID;
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unsigned char OBR_ID;
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unsigned char director;
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unsigned char rd_trk_set;
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unsigned short max_rec_zero;
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unsigned char reserved1;
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unsigned char RWANY_in_LR;
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unsigned char factor6;
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unsigned char factor7;
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unsigned char factor8;
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unsigned char reserved2[3];
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unsigned char reserved3[6];
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unsigned int long_no_cyl;
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} __attribute__ ((packed));
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/*
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* Represents possible format modes that can be specified when formatting
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* a DASD.
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*/
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typedef enum format_mode_t {
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FULL, /* default mode */
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QUICK, /* format only the first 2 tracks */
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EXPAND, /* search for unformatted area and format only that part*/
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} format_mode_t;
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static const char mode_str[3][10] = {
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"Full", "Quick", "Expand"
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};
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/*
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* struct format_data_t
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* represents all data necessary to format a dasd
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*/
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typedef struct format_data_t {
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unsigned int start_unit; /* from track */
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unsigned int stop_unit; /* to track */
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unsigned int blksize; /* sectorsize */
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unsigned int intensity;
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} format_data_t;
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/*
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* values to be used for format_data_t.intensity
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* 0/8: normal format
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* 1/9: also write record zero
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* 3/11: also write home address
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* 4/12: invalidate track
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*/
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#define DASD_FMT_INT_FMT_R0 1 /* write record zero */
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#define DASD_FMT_INT_FMT_HA 2 /* write home address, also set FMT_R0 ! */
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#define DASD_FMT_INT_INVAL 4 /* invalidate tracks */
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#define DASD_FMT_INT_COMPAT 8 /* use OS/390 compatible disk layout */
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#define DASD_FMT_INT_FMT_NOR0 16 /* remove permission to write record zero */
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/*
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* struct format_check_t
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* represents all data necessary to evaluate the format of
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* different tracks of a dasd
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*/
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typedef struct format_check_t {
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/* Input */
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struct format_data_t expect;
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/* Output */
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unsigned int result; /* Error indication (DASD_FMT_ERR_*) */
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unsigned int unit; /* Track that is in error */
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unsigned int rec; /* Record that is in error */
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unsigned int num_records; /* Records in the track in error */
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unsigned int blksize; /* Block-size of first record in error */
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unsigned int key_length; /* Key length of first record in error */
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} format_check_t;
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/*
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* values to be used in format_check_t for indicating
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* possible format errors
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*/
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#define DASD_FMT_ERR_TOO_FEW_RECORDS 1
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#define DASD_FMT_ERR_TOO_MANY_RECORDS 2
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#define DASD_FMT_ERR_BLKSIZE 3
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#define DASD_FMT_ERR_RECORD_ID 4
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#define DASD_FMT_ERR_KEY_LENGTH 5
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/*
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* values to be used for dasd_information2_t.format
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* 0x00: NOT formatted
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* 0x01: Linux disc layout
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* 0x02: Common disc layout
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*/
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#define DASD_FORMAT_NONE 0
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#define DASD_FORMAT_LDL 1
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#define DASD_FORMAT_CDL 2
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/* Disable the volume (for Linux) */
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#define BIODASDDISABLE _IO(DASD_IOCTL_LETTER,0)
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/* Enable the volume (for Linux) */
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#define BIODASDENABLE _IO(DASD_IOCTL_LETTER,1)
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/* Get information on a dasd device (enhanced) */
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#define BIODASDINFO2 _IOR(DASD_IOCTL_LETTER, 3, dasd_information2_t)
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/* #define BIODASDFORMAT _IOW(IOCTL_LETTER,0,format_data_t) , deprecated */
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#define BIODASDFMT _IOW(DASD_IOCTL_LETTER,1,format_data_t)
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/* Check device format according to format_data_t */
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#define BIODASDCHECKFMT _IOWR(DASD_IOCTL_LETTER, 2, format_check_t)
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/****************************************************************************
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* SECTION: Further IOCTL Definitions (see fs.h and hdreq.h ) *
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****************************************************************************/
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/* re-read partition table */
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#define BLKRRPART _IO(0x12,95)
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/* get block device sector size */
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#define BLKSSZGET _IO(0x12,104)
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/* get read-only status (0 = read_write) */
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#define BLKROGET _IO(0x12,94)
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/* get device geometry */
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#define HDIO_GETGEO 0x0301
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/****************************************************************************
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* SECTION: DASDFMT internal types *
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****************************************************************************/
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#define DASD_PARTN_BITS 2
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#define PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
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#define EXIT_MISUSE 1
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#define EXIT_BUSY 2
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#define LABEL_LENGTH 14
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#define VLABEL_CHARS 84
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#define LINE_LENGTH 80
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#define ERR_LENGTH 90
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#define DEFAULT_BLOCKSIZE 4096
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/* requestsize - number of cylinders in one format step */
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#define DEFAULT_REQUESTSIZE 10
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#define USABLE_PARTITIONS ((1 << DASD_PARTN_BITS) - 1)
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#define ERRMSG(x...) {fflush(stdout);fprintf(stderr,x);}
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#define ERRMSG_EXIT(ec,x...) {fflush(stdout);fprintf(stderr,x);exit(ec);}
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#define CHECK_SPEC_MAX_ONCE(i,str) \
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{if (i>1) ERRMSG_EXIT(EXIT_MISUSE,"%s: " str " " \
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"can only be specified once\n",prog_name);}
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#define PARSE_PARAM_INTO(x,param,base,str) \
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{char *endptr=NULL; x=(int)strtol(param,&endptr,base); \
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if (*endptr) ERRMSG_EXIT(EXIT_MISUSE,"%s: " str " " \
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"is in invalid format\n",prog_name);}
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typedef struct bootstrap1 {
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u_int32_t key;
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u_int32_t data[6];
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} __attribute__ ((packed)) bootstrap1_t;
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typedef struct bootstrap2 {
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u_int32_t key;
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u_int32_t data[36];
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} __attribute__ ((packed)) bootstrap2_t;
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typedef struct dasdfmt_info {
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dasd_information2_t dasd_info;
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char devname[PATH_MAX];
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int verbosity;
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int testmode;
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int withoutprompt;
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int print_progressbar;
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int print_hashmarks, hashstep;
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int print_percentage;
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int force;
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int writenolabel;
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int labelspec;
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int cdl_format;
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int blksize_specified;
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int reqsize_specified;
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int device_id;
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int keep_volser;
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int force_host;
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int layout_specified;
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int check;
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} dasdfmt_info_t;
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/*
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C9D7D3F1 000A0000 0000000F 03000000 00000001 00000000 00000000
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*/
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static bootstrap1_t ipl1 = {
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0xC9D7D3F1, {
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0x000A0000, 0x0000000F, 0x03000000,
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0x00000001, 0x00000000, 0x00000000
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}
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};
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/*
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C9D7D3F2 07003AB8 40000006 31003ABE 40000005 08003AA0 00000000 06000000
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20000000 00000000 00000000 00000400 00000000 00000000 00000000 00000000
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00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
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00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
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00000000 00000000 00000000 00000000 00000000
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*/
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static bootstrap2_t ipl2 = {
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0xC9D7D3F2, {
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0x07003AB8, 0x40000006, 0x31003ABE,
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0x40000005, 0x08003AA0, 0x00000000,
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0x06000000, 0x20000000, 0x00000000,
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0x00000000, 0x00000400, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000,
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0x00000000, 0x00000000, 0x00000000
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}
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};
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#endif /* DASDFMT_H */
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