1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
373 lines
12 KiB
C
373 lines
12 KiB
C
#ifndef __KERNEL__
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <ctype.h>
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#include <time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <linux/fs.h>
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#include <linux/types.h>
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#include <linux/hdreg.h>
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#include <asm/dasd.h>
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#endif
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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 13148
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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 VTOC_ERROR "VTOC error:"
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typedef struct ttr
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{
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__u16 tt;
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__u8 r;
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} __attribute__ ((packed)) ttr_t;
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typedef struct cchhb
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{
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__u16 cc;
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__u16 hh;
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__u8 b;
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} __attribute__ ((packed)) cchhb_t;
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typedef struct cchh
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{
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__u16 cc;
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__u16 hh;
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} __attribute__ ((packed)) cchh_t;
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typedef struct labeldate
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{
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__u8 year;
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__u16 day;
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} __attribute__ ((packed)) labeldate_t;
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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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__u8 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[29]; /* reserved */
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} __attribute__ ((packed)) volume_label_t;
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typedef struct extent
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{
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__u8 typeind; /* extent type indicator */
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__u8 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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__u16 DS4DSCYL; /* number of logical cyls */
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__u16 DS4DSTRK; /* number of tracks in a logical cylinder */
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__u16 DS4DEVTK; /* device track length */
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__u8 DS4DEVI; /* non-last keyed record overhead */
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__u8 DS4DEVL; /* last keyed record overhead */
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__u8 DS4DEVK; /* non-keyed record overhead differential */
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__u8 DS4DEVFG; /* flag byte */
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__u16 DS4DEVTL; /* device tolerance */
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__u8 DS4DEVDT; /* number of DSCB's per track */
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__u8 DS4DEVDB; /* number of directory blocks per track */
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} __attribute__ ((packed)) dev_const_t;
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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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__u8 DS1FMTID; /* format identifier */
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char DS1DSSN[6]; /* data set serial number */
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__u16 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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__u8 DS1NOEPV; /* number of extents on volume */
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__u8 DS1NOBDB; /* no. of bytes used in last direction blk */
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__u8 DS1FLAG1; /* flag 1 */
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char DS1SYSCD[13]; /* system code */
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labeldate_t DS1REFD; /* date last referenced */
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__u8 DS1SMSFG; /* system managed storage indicators */
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__u8 DS1SCXTF; /* sec. space extension flag byte */
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__u16 DS1SCXTV; /* secondary space extension value */
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__u8 DS1DSRG1; /* data set organisation byte 1 */
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__u8 DS1DSRG2; /* data set organisation byte 2 */
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__u8 DS1RECFM; /* record format */
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__u8 DS1OPTCD; /* option code */
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__u16 DS1BLKL; /* block length */
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__u16 DS1LRECL; /* record length */
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__u8 DS1KEYL; /* key length */
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__u16 DS1RKP; /* relative key position */
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__u8 DS1DSIND; /* data set indicators */
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__u8 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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__u16 DS1TRBAL; /* space remaining on last used track */
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__u16 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 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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__u8 DS4IDFMT; /* format identifier */
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cchhb_t DS4HPCHR; /* highest address of a format 1 DSCB */
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__u16 DS4DSREC; /* number of available DSCB's */
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cchh_t DS4HCCHH; /* CCHH of next available alternate track */
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__u16 DS4NOATK; /* number of remaining alternate tracks */
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__u8 DS4VTOCI; /* VTOC indicators */
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__u8 DS4NOEXT; /* number of extents in VTOC */
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__u8 DS4SMSFG; /* system managed storage indicators */
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__u8 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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__u8 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[9]; /* 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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__u16 t; /* RTA of the first track of free extent */
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__u16 fc; /* number of whole cylinders in free ext. */
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__u8 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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__u8 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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__u32 a; /* starting RTA value */
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__u32 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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__u8 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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char * vtoc_ebcdic_enc (
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unsigned char source[LINE_LENGTH],
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unsigned char target[LINE_LENGTH],
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int l);
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char * vtoc_ebcdic_dec (
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unsigned char source[LINE_LENGTH],
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unsigned char target[LINE_LENGTH],
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int l);
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void vtoc_set_extent (
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extent_t * ext,
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__u8 typeind,
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__u8 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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__u16 cc,
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__u16 hh);
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void vtoc_set_cchhb (
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cchhb_t * addr,
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__u16 cc,
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__u16 hh,
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__u8 b);
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void vtoc_set_date (
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labeldate_t * d,
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__u8 year,
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__u16 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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void vtoc_init_format1_label (
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char *volid,
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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 usable_partitions,
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unsigned int 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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__u16 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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__u16 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 cyl,
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int trk,
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__u16 a,
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__u16 b,
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__u8 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 cyl,
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int trk,
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__u16 a,
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__u16 b,
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__u8 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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__u32 a,
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__u32 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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__u32 a,
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__u32 b);
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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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__u32 start,
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__u32 stop,
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int cyl,
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int trk);
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