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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>
270 lines
8.2 KiB
C
270 lines
8.2 KiB
C
/*
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* dasdview - Display DASD and VTOC information or dump the contents of a DASD
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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 DASDVIEW_H
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#define DASDVIEW_H
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#include <limits.h>
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#include "lib/u2s.h"
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/********************************************************************************
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* SECTION: Definitions 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_information_t
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* represents any data about the device, which is visible to userspace.
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* including foramt and features.
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*/
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typedef struct dasd_information_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, '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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} dasd_information_t;
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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, '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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unsigned char characteristics[64];/*from read_device_characteristics */
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unsigned 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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* 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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/*
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* values to be used for dasd_information2_t.features
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* 0x00: default features
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* 0x01: readonly (ro)
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* 0x02: use diag discipline (diag)
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*/
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#define DASD_FEATURE_DEFAULT 0
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#define DASD_FEATURE_READONLY 1
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#define DASD_FEATURE_USEDIAG 2
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/* Get information on a dasd device (enhanced) */
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#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
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#define BIODASDINFO2 _IOR(DASD_IOCTL_LETTER,3,dasd_information2_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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/* get block device sector size */
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#define BLKSSZGET _IO(0x12,104)
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/* return device size in bytes (u64 *arg) */
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#define BLKGETSIZE64 _IOR(0x12,114,size_t)
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/* get device geometry */
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#define HDIO_GETGEO 0x0301
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/********************************************************************************
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* SECTION: DASDVIEW internal types
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*******************************************************************************/
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#define LINE_LENGTH 80
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#define DASDVIEW_ERROR "dasdview:"
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#define DEFAULT_BEGIN 0
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#define DEFAULT_SIZE 128
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#define NO_PART_LABELS 8 /* for partition related labels (f1,f8 and f9) */
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#define SEEK_STEP 4194304LL
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#define DUMP_STRING_SIZE 1024LL
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#define ERROR_STRING_SIZE 1024
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static char error_str[ERROR_STRING_SIZE];
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enum dasdview_failure {
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open_error,
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seek_error,
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read_error,
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ioctl_error,
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usage_error,
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disk_layout,
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vtoc_error
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};
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typedef struct dasdview_info
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{
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char device[PATH_MAX];
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dasd_information2_t dasd_info;
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int dasd_info_version;
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int blksize;
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struct hd_geometry geo;
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u_int32_t hw_cylinders;
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unsigned long long begin;
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unsigned long long size;
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int format1;
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int format2;
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int action_specified;
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int begin_specified;
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int size_specified;
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int characteristic_specified;
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int device_id;
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int general_info;
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int extended_info;
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int volser;
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int vtoc;
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int vtoc_info;
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int vtoc_f1;
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int vtoc_f3;
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int vtoc_f4;
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int vtoc_f5;
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int vtoc_f7;
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int vtoc_f8;
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int vtoc_f9;
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int vtoc_all;
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int vlabel_info;
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format1_label_t f1[NO_PART_LABELS];
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format4_label_t f4;
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format5_label_t f5;
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format7_label_t f7;
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format1_label_t f8[NO_PART_LABELS];
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format9_label_t f9[NO_PART_LABELS];
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int f1c;
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int f4c;
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int f5c;
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int f7c;
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int f8c;
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int f9c;
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char busid[U2S_BUS_ID_SIZE];
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int busid_valid;
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int raw_track_access;
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struct zdsroot *zdsroot;
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struct raw_vtoc *rawvtoc;
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struct dasd *dasd;
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} dasdview_info_t;
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#endif /* DASDVIEW_H */
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