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0ea693d95c
Fixes some compilation issues on musl libc. uint*_t is already used so this should not introduce any new issues. Github-ID: https://github.com/ibm-s390-linux/s390-tools/pull/193 Signed-off-by: Sertonix <sertonix@posteo.net> Reviewed-by: Steffen Eiden <seiden@linux.ibm.com> Reviewed-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
434 lines
15 KiB
C
434 lines
15 KiB
C
/*
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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 LIB_VTOC_H
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#define LIB_VTOC_H
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdint.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 <time.h>
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#include <unistd.h>
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#include "lib/dasd_base.h"
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#define LINE_LENGTH 80
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#define VTOC_START_CC 0x0
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#define VTOC_START_HH 0x1
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#define FIRST_USABLE_CYL 1
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#define FIRST_USABLE_TRK 2
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#define DASD_3380_TYPE 13184
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#define DASD_3390_TYPE 13200
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#define DASD_9345_TYPE 37701
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#define DASD_3380_VALUE 0xbb60
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#define DASD_3390_VALUE 0xe5a2
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#define DASD_9345_VALUE 0xbc98
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#define VOLSER_LENGTH 6
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#define BIG_DISK_SIZE 0x10000
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#define LV_COMPAT_CYL 0xFFFE
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#define VTOC_ERROR "VTOC error:"
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#define MAX_VTOC_ENTRIES 9 /* max number of VTOC labels for cdl formatted DASD */
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typedef struct ttr
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{
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uint16_t tt;
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uint8_t r;
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} __attribute__ ((packed)) ttr_t;
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typedef struct cchhb
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{
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uint16_t cc;
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uint16_t hh;
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uint8_t b;
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} __attribute__ ((packed)) cchhb_t;
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typedef struct cchh
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{
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uint16_t cc;
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uint16_t hh;
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} __attribute__ ((packed)) cchh_t;
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typedef struct labeldate
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{
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uint8_t year;
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uint16_t day;
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} __attribute__ ((packed)) labeldate_t;
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/*
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* The following structure is a merger of the cdl and ldl volume label.
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* On an ldl disk there is no key information, so when reading an
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* ldl label from disk, the data should be copied at the address of vollbl.
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* On the other side, the field ldl_version is reserved in a cdl record
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* and the field formatted_cyl exists only for ldl labels. So when
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* reading a cdl label from disk, the formatted_cyl field will contain
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* arbitrary data.
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* This layout may be a bit awkward, but the advantage of having the
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* same label type for both disk layout types is bigger than the effort
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* for taking a bit of extra care at the fringes.
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*/
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typedef struct volume_label
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{
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char volkey[4]; /* volume key = volume label */
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char vollbl[4]; /* volume label */
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char volid[6]; /* volume identifier */
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uint8_t security; /* security byte */
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cchhb_t vtoc; /* VTOC address */
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char res1[5]; /* reserved */
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char cisize[4]; /* CI-size for FBA,... */
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/* ...blanks for CKD */
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char blkperci[4]; /* no of blocks per CI (FBA), blanks for CKD */
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char labperci[4]; /* no of labels per CI (FBA), blanks for CKD */
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char res2[4]; /* reserved */
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char lvtoc[14]; /* owner code for LVTOC */
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char res3[28]; /* reserved */
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char ldl_version; /* version number, valid for ldl format */
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unsigned long long formatted_blocks; /* valid when ldl_version >= f2 */
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} __attribute__ ((packed)) volume_label_t;
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/**
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* This represents a volume label specific for OS/390 compatible disk layout
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*/
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struct vol_label_cdl {
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char volkey[4];
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char vollbl[4];
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char opaq[70];
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cchhb_t br; /* boot record address */
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char stdv[1]; /* standard version ID */
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} __attribute__ ((packed));
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static inline int is_vol1(char *this)
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{
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char vol1[] = {0xe5, 0xd6, 0xd3, 0xf1, 0x00} /* "VOL1" in EBCDIC */;
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return !strncmp(this, vol1, 4);
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}
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typedef struct extent
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{
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uint8_t typeind; /* extent type indicator */
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uint8_t seqno; /* extent sequence number */
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cchh_t llimit; /* starting point of this extent */
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cchh_t ulimit; /* ending point of this extent */
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} __attribute__ ((packed)) extent_t;
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typedef struct dev_const
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{
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uint16_t DS4DSCYL; /* number of logical cyls */
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uint16_t DS4DSTRK; /* number of tracks in a logical cylinder */
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uint16_t DS4DEVTK; /* device track length */
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uint8_t DS4DEVI; /* non-last keyed record overhead */
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uint8_t DS4DEVL; /* last keyed record overhead */
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uint8_t DS4DEVK; /* non-keyed record overhead differential */
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uint8_t DS4DEVFG; /* flag byte */
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uint16_t DS4DEVTL; /* device tolerance */
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uint8_t DS4DEVDT; /* number of DSCB's per track */
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uint8_t DS4DEVDB; /* number of directory blocks per track */
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} __attribute__ ((packed)) dev_const_t;
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/*
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* format 1 and format 8 label have the same layout so we use the following
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* structure for both.
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*/
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typedef struct format1_label
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{
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char DS1DSNAM[44]; /* data set name */
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uint8_t DS1FMTID; /* format identifier */
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unsigned char DS1DSSN[6];/* data set serial number */
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uint16_t DS1VOLSQ; /* volume sequence number */
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labeldate_t DS1CREDT; /* creation date: ydd */
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labeldate_t DS1EXPDT; /* expiration date */
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uint8_t DS1NOEPV; /* number of extents on volume */
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uint8_t DS1NOBDB; /* no. of bytes used in last direction blk */
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uint8_t DS1FLAG1; /* flag 1 */
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unsigned char DS1SYSCD[13]; /* system code */
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labeldate_t DS1REFD; /* date last referenced */
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uint8_t DS1SMSFG; /* system managed storage indicators */
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uint8_t DS1SCXTF; /* sec. space extension flag byte */
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uint16_t DS1SCXTV; /* secondary space extension value */
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uint8_t DS1DSRG1; /* data set organisation byte 1 */
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uint8_t DS1DSRG2; /* data set organisation byte 2 */
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uint8_t DS1RECFM; /* record format */
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uint8_t DS1OPTCD; /* option code */
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uint16_t DS1BLKL; /* block length */
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uint16_t DS1LRECL; /* record length */
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uint8_t DS1KEYL; /* key length */
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uint16_t DS1RKP; /* relative key position */
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uint8_t DS1DSIND; /* data set indicators */
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uint8_t DS1SCAL1; /* secondary allocation flag byte */
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char DS1SCAL3[3]; /* secondary allocation quantity */
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ttr_t DS1LSTAR; /* last used track and block on track */
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uint16_t DS1TRBAL; /* space remaining on last used track */
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uint16_t res1; /* reserved */
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extent_t DS1EXT1; /* first extent description */
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extent_t DS1EXT2; /* second extent description */
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extent_t DS1EXT3; /* third extent description */
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cchhb_t DS1PTRDS; /* possible pointer to f2 or f3 DSCB */
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} __attribute__ ((packed)) format1_label_t;
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typedef struct format3_label
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{
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char DS3KEYID[4]; /* key identifier */
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extent_t DS3EXTNT[4]; /* first 4 extent descriptions */
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uint8_t DS3FMTID; /* format identifier */
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extent_t DS3ADEXT[9]; /* last 9 extent description */
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cchhb_t DS3PTRDS; /* pointer to next format3 DSCB */
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} __attribute__ ((packed)) format3_label_t;
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typedef struct format4_label
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{
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char DS4KEYCD[44]; /* key code for VTOC labels: 44 times 0x04 */
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uint8_t DS4IDFMT; /* format identifier */
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cchhb_t DS4HPCHR; /* highest address of a format 1 DSCB */
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uint16_t DS4DSREC; /* number of available DSCB's */
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cchh_t DS4HCCHH; /* CCHH of next available alternate track */
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uint16_t DS4NOATK; /* number of remaining alternate tracks */
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uint8_t DS4VTOCI; /* VTOC indicators */
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uint8_t DS4NOEXT; /* number of extents in VTOC */
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uint8_t DS4SMSFG; /* system managed storage indicators */
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uint8_t DS4DEVAC; /* number of alternate cylinders.
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Subtract from first two bytes of
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DS4DEVSZ to get number of usable
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cylinders. can be zero. valid
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only if DS4DEVAV on. */
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dev_const_t DS4DEVCT; /* device constants */
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char DS4AMTIM[8]; /* VSAM time stamp */
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char DS4AMCAT[3]; /* VSAM catalog indicator */
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char DS4R2TIM[8]; /* VSAM volume/catalog match time stamp */
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char res1[5]; /* reserved */
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char DS4F6PTR[5]; /* pointer to first format 6 DSCB */
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extent_t DS4VTOCE; /* VTOC extent description */
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char res2[10]; /* reserved */
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uint8_t DS4EFLVL; /* extended free-space management level */
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cchhb_t DS4EFPTR; /* pointer to extended free-space info */
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char res3; /* reserved */
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uint32_t DS4DCYL; /* number of logical cyls */
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char res4[2]; /* reserved */
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uint8_t DS4DEVF2; /* device flags */
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char res5; /* reserved */
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} __attribute__ ((packed)) format4_label_t;
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typedef struct ds5ext
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{
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uint16_t t; /* RTA of the first track of free extent */
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uint16_t fc; /* number of whole cylinders in free ext. */
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uint8_t ft; /* number of remaining free tracks */
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} __attribute__ ((packed)) ds5ext_t;
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typedef struct format5_label
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{
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char DS5KEYID[4]; /* key identifier */
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ds5ext_t DS5AVEXT; /* first available (free-space) extent. */
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ds5ext_t DS5EXTAV[7]; /* seven available extents */
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uint8_t DS5FMTID; /* format identifier */
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ds5ext_t DS5MAVET[18]; /* eighteen available extents */
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cchhb_t DS5PTRDS; /* pointer to next format5 DSCB */
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} __attribute__ ((packed)) format5_label_t;
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typedef struct ds7ext
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{
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uint32_t a; /* starting RTA value */
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uint32_t b; /* ending RTA value + 1 */
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} __attribute__ ((packed)) ds7ext_t;
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typedef struct format7_label
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{
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char DS7KEYID[4]; /* key identifier */
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ds7ext_t DS7EXTNT[5]; /* space for 5 extent descriptions */
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uint8_t DS7FMTID; /* format identifier */
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ds7ext_t DS7ADEXT[11]; /* space for 11 extent descriptions */
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char res1[2]; /* reserved */
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cchhb_t DS7PTRDS; /* pointer to next FMT7 DSCB */
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} __attribute__ ((packed)) format7_label_t;
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typedef struct format9_label
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{
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uint8_t DS9KEYID; /* key code for format 9 labels (0x09) */
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uint8_t DS9SUBTY; /* subtype (0x01) */
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uint8_t DS9NUMF9; /* number of F9 datasets */
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uint8_t res1[41]; /* reserved */
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uint8_t DS9FMTID; /* format identifier */
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uint8_t res2[90]; /* reserved */
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cchhb_t DS9PTRDS; /* pointer to next DSCB */
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} __attribute__ ((packed)) format9_label_t;
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char * vtoc_ebcdic_enc (char *source, char *target, int l);
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char * vtoc_ebcdic_dec (char *source, char *target, int l);
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void vtoc_set_extent (
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extent_t * ext,
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uint8_t typeind,
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uint8_t seqno,
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cchh_t * lower,
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cchh_t * upper);
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void vtoc_set_cchh (
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cchh_t * addr,
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uint32_t cc,
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uint16_t hh);
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uint32_t vtoc_get_cyl_from_cchh(cchh_t *addr);
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uint16_t vtoc_get_head_from_cchh(cchh_t *addr);
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void vtoc_set_cchhb (
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cchhb_t * addr,
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uint32_t cc,
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uint16_t hh,
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uint8_t b);
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uint32_t vtoc_get_cyl_from_cchhb(cchhb_t *addr);
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uint16_t vtoc_get_head_from_cchhb(cchhb_t *addr);
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uint64_t cchhb2blk(cchhb_t *p, struct hd_geometry *geo);
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uint64_t cchh2blk (cchh_t *p, struct hd_geometry *geo);
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uint32_t cchh2trk (cchh_t *p, struct hd_geometry *geo);
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void vtoc_set_date (
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labeldate_t * d,
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uint8_t year,
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uint16_t day);
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void vtoc_volume_label_init (
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volume_label_t *vlabel);
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int vtoc_read_volume_label (
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char * device,
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unsigned long vlabel_start,
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volume_label_t * vlabel);
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int vtoc_write_volume_label (
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char *device,
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unsigned long vlabel_start,
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volume_label_t *vlabel);
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void vtoc_volume_label_set_volser (
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volume_label_t *vlabel,
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char *volser);
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char *vtoc_volume_label_get_volser (
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volume_label_t *vlabel,
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char *volser);
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void vtoc_volume_label_set_key (
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volume_label_t *vlabel,
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char *key);
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void vtoc_volume_label_set_label (
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volume_label_t *vlabel,
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char *lbl);
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char *vtoc_volume_label_get_label (
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volume_label_t *vlabel,
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char *lbl);
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void vtoc_read_label (
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char *device,
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unsigned long position,
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format1_label_t *f1,
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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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void vtoc_write_label (
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char *device,
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unsigned long position,
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format1_label_t *f1,
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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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format9_label_t *f9);
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void vtoc_init_format1_label (
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unsigned int blksize,
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extent_t *part_extent,
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format1_label_t *f1);
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void vtoc_init_format4_label (
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format4_label_t *f4lbl,
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unsigned int compat_cylinders,
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unsigned int real_cylinders,
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unsigned int tracks,
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unsigned int blocks,
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unsigned int blksize,
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uint16_t dev_type);
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void vtoc_update_format4_label (
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format4_label_t *f4,
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cchhb_t *highest_f1,
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uint16_t unused_update);
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void vtoc_init_format5_label (
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format5_label_t *f5);
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void vtoc_update_format5_label_add (
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format5_label_t *f5,
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int verbose,
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int trk,
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uint16_t a,
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uint16_t b,
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uint8_t c);
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void vtoc_update_format5_label_del (
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format5_label_t *f5,
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int verbose,
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int trk,
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uint16_t a,
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uint16_t b,
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uint8_t c);
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void vtoc_init_format7_label (
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format7_label_t *f7);
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void vtoc_update_format7_label_add (
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format7_label_t *f7,
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int verbose,
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uint32_t a,
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uint32_t b);
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void vtoc_update_format7_label_del (
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format7_label_t *f7,
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int verbose,
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uint32_t a,
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uint32_t b);
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void vtoc_init_format8_label (
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unsigned int blksize,
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extent_t *part_extent,
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format1_label_t *f1);
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void vtoc_update_format8_label (
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cchhb_t *associated_f9,
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format1_label_t *f8);
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void vtoc_init_format9_label (
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format9_label_t *f9);
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void vtoc_set_freespace(
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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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char ch,
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int verbose,
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uint32_t start,
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uint32_t stop,
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uint32_t cyl,
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uint32_t trk);
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#endif /* LIB_VTOC_H */
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