| /* |
| * File...........: s390-tools/dasdview/vtoc.h |
| * Author(s)......: Horst Hummel <horst.hummel@de.ibm.com> |
| * Bugreports.to..: <Linux390@de.ibm.com> |
| * |
| * This is a user-space copy of the kernel vtoc,h. |
| * |
| * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2002 |
| * |
| * History of changes (starts March 2002) |
| * 2002-03-12 initial |
| */ |
| |
| #ifndef VTOC_H |
| #define VTOC_H |
| |
| #include <string.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <time.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| |
| #include <sys/stat.h> |
| #include <sys/ioctl.h> |
| |
| #define LINE_LENGTH 80 |
| #define VTOC_START_CC 0x0 |
| #define VTOC_START_HH 0x1 |
| #define FIRST_USABLE_CYL 1 |
| #define FIRST_USABLE_TRK 2 |
| |
| #define DASD_3380_TYPE 13148 |
| #define DASD_3390_TYPE 13200 |
| #define DASD_9345_TYPE 37701 |
| |
| #define DASD_3380_VALUE 0xbb60 |
| #define DASD_3390_VALUE 0xe5a2 |
| #define DASD_9345_VALUE 0xbc98 |
| |
| #define VOLSER_LENGTH 6 |
| #define BIG_DISK_SIZE 0x10000 |
| |
| #define VTOC_ERROR "VTOC error:" |
| |
| typedef struct ttr ttr_t; |
| typedef struct cchhb cchhb_t; |
| typedef struct cchh cchh_t; |
| typedef struct labeldate labeldate_t; |
| typedef struct volume_label volume_label_t; |
| typedef struct extent extent_t; |
| typedef struct dev_const dev_const_t; |
| typedef struct format1_label format1_label_t; |
| typedef struct format4_label format4_label_t; |
| typedef struct ds5ext ds5ext_t; |
| typedef struct format5_label format5_label_t; |
| typedef struct ds7ext ds7ext_t; |
| typedef struct format7_label format7_label_t; |
| |
| struct __attribute__ ((packed)) ttr { |
| u_int16_t tt; |
| u_int8_t r; |
| }; |
| |
| struct __attribute__ ((packed)) cchhb { |
| u_int16_t cc; |
| u_int16_t hh; |
| u_int8_t b; |
| }; |
| |
| struct __attribute__ ((packed)) cchh { |
| u_int16_t cc; |
| u_int16_t hh; |
| }; |
| |
| struct __attribute__ ((packed)) labeldate { |
| u_int8_t year; |
| u_int16_t day; |
| }; |
| |
| struct __attribute__ ((packed)) volume_label { |
| char volkey[4]; /* volume key = volume label */ |
| char vollbl[4]; /* volume label */ |
| char volid[6]; /* volume identifier */ |
| u_int8_t security; /* security byte */ |
| cchhb_t vtoc; /* VTOC address */ |
| char res1[5]; /* reserved */ |
| char cisize[4]; /* CI-size for FBA,... */ |
| /* ...blanks for CKD */ |
| char blkperci[4]; /* no of blocks per CI (FBA), blanks for CKD */ |
| char labperci[4]; /* no of labels per CI (FBA), blanks for CKD */ |
| char res2[4]; /* reserved */ |
| char lvtoc[14]; /* owner code for LVTOC */ |
| char res3[29]; /* reserved */ |
| }; |
| |
| struct __attribute__ ((packed)) extent { |
| u_int8_t typeind; /* extent type indicator */ |
| u_int8_t seqno; /* extent sequence number */ |
| cchh_t llimit; /* starting point of this extent */ |
| cchh_t ulimit; /* ending point of this extent */ |
| }; |
| |
| struct __attribute__ ((packed)) dev_const { |
| u_int16_t DS4DSCYL; /* number of logical cyls */ |
| u_int16_t DS4DSTRK; /* number of tracks in a logical cylinder */ |
| u_int16_t DS4DEVTK; /* device track length */ |
| u_int8_t DS4DEVI; /* non-last keyed record overhead */ |
| u_int8_t DS4DEVL; /* last keyed record overhead */ |
| u_int8_t DS4DEVK; /* non-keyed record overhead differential */ |
| u_int8_t DS4DEVFG; /* flag byte */ |
| u_int16_t DS4DEVTL; /* device tolerance */ |
| u_int8_t DS4DEVDT; /* number of DSCB's per track */ |
| u_int8_t DS4DEVDB; /* number of directory blocks per track */ |
| }; |
| |
| struct __attribute__ ((packed)) format1_label { |
| char DS1DSNAM[44]; /* data set name */ |
| u_int8_t DS1FMTID; /* format identifier */ |
| char DS1DSSN[6]; /* data set serial number */ |
| u_int16_t DS1VOLSQ; /* volume sequence number */ |
| labeldate_t DS1CREDT; /* creation date: ydd */ |
| labeldate_t DS1EXPDT; /* expiration date */ |
| u_int8_t DS1NOEPV; /* number of extents on volume */ |
| u_int8_t DS1NOBDB; /* no. of bytes used in last direction blk */ |
| u_int8_t DS1FLAG1; /* flag 1 */ |
| char DS1SYSCD[13]; /* system code */ |
| labeldate_t DS1REFD; /* date last referenced */ |
| u_int8_t DS1SMSFG; /* system managed storage indicators */ |
| u_int8_t DS1SCXTF; /* sec. space extension flag byte */ |
| u_int16_t DS1SCXTV; /* secondary space extension value */ |
| u_int8_t DS1DSRG1; /* data set organisation byte 1 */ |
| u_int8_t DS1DSRG2; /* data set organisation byte 2 */ |
| u_int8_t DS1RECFM; /* record format */ |
| u_int8_t DS1OPTCD; /* option code */ |
| u_int16_t DS1BLKL; /* block length */ |
| u_int16_t DS1LRECL; /* record length */ |
| u_int8_t DS1KEYL; /* key length */ |
| u_int16_t DS1RKP; /* relative key position */ |
| u_int8_t DS1DSIND; /* data set indicators */ |
| u_int8_t DS1SCAL1; /* secondary allocation flag byte */ |
| char DS1SCAL3[3]; /* secondary allocation quantity */ |
| ttr_t DS1LSTAR; /* last used track and block on track */ |
| u_int16_t DS1TRBAL; /* space remaining on last used track */ |
| u_int16_t res1; /* reserved */ |
| extent_t DS1EXT1; /* first extent description */ |
| extent_t DS1EXT2; /* second extent description */ |
| extent_t DS1EXT3; /* third extent description */ |
| cchhb_t DS1PTRDS; /* possible pointer to f2 or f3 DSCB */ |
| }; |
| |
| struct __attribute__ ((packed)) format4_label { |
| char DS4KEYCD[44]; /* key code for VTOC labels: 44 times 0x04 */ |
| u_int8_t DS4IDFMT; /* format identifier */ |
| cchhb_t DS4HPCHR; /* highest address of a format 1 DSCB */ |
| u_int16_t DS4DSREC; /* number of available DSCB's */ |
| cchh_t DS4HCCHH; /* CCHH of next available alternate track */ |
| u_int16_t DS4NOATK; /* number of remaining alternate tracks */ |
| u_int8_t DS4VTOCI; /* VTOC indicators */ |
| u_int8_t DS4NOEXT; /* number of extents in VTOC */ |
| u_int8_t DS4SMSFG; /* system managed storage indicators */ |
| u_int8_t DS4DEVAC; /* number of alternate cylinders. |
| Subtract from first two bytes of |
| DS4DEVSZ to get number of usable |
| cylinders. can be zero. valid |
| only if DS4DEVAV on. */ |
| dev_const_t DS4DEVCT; /* device constants */ |
| char DS4AMTIM[8]; /* VSAM time stamp */ |
| char DS4AMCAT[3]; /* VSAM catalog indicator */ |
| char DS4R2TIM[8]; /* VSAM volume/catalog match time stamp */ |
| char res1[5]; /* reserved */ |
| char DS4F6PTR[5]; /* pointer to first format 6 DSCB */ |
| extent_t DS4VTOCE; /* VTOC extent description */ |
| char res2[10]; /* reserved */ |
| u_int8_t DS4EFLVL; /* extended free-space management level */ |
| cchhb_t DS4EFPTR; /* pointer to extended free-space info */ |
| char res3[9]; /* reserved */ |
| }; |
| |
| struct __attribute__ ((packed)) ds5ext { |
| u_int16_t t; /* RTA of the first track of free extent */ |
| u_int16_t fc; /* number of whole cylinders in free ext. */ |
| u_int8_t ft; /* number of remaining free tracks */ |
| }; |
| |
| struct __attribute__ ((packed)) format5_label { |
| char DS5KEYID[4]; /* key identifier */ |
| ds5ext_t DS5AVEXT; /* first available (free-space) extent. */ |
| ds5ext_t DS5EXTAV[7]; /* seven available extents */ |
| u_int8_t DS5FMTID; /* format identifier */ |
| ds5ext_t DS5MAVET[18]; /* eighteen available extents */ |
| cchhb_t DS5PTRDS; /* pointer to next format5 DSCB */ |
| }; |
| |
| struct __attribute__ ((packed)) ds7ext { |
| u_int32_t a; /* starting RTA value */ |
| u_int32_t b; /* ending RTA value + 1 */ |
| }; |
| |
| struct __attribute__ ((packed)) format7_label { |
| char DS7KEYID[4]; /* key identifier */ |
| ds7ext_t DS7EXTNT[5]; /* space for 5 extent descriptions */ |
| u_int8_t DS7FMTID; /* format identifier */ |
| ds7ext_t DS7ADEXT[11]; /* space for 11 extent descriptions */ |
| char res1[2]; /* reserved */ |
| cchhb_t DS7PTRDS; /* pointer to next FMT7 DSCB */ |
| }; |
| |
| char * vtoc_ebcdic_enc (char source[LINE_LENGTH], char target[LINE_LENGTH], |
| int l); |
| char * vtoc_ebcdic_dec (char source[LINE_LENGTH], char target[LINE_LENGTH], |
| int l); |
| void vtoc_set_extent (extent_t * ext, u_int8_t typeind, u_int8_t seqno, |
| cchh_t * lower, cchh_t * upper); |
| void vtoc_set_cchh (cchh_t * addr, u_int16_t cc, u_int16_t hh); |
| void vtoc_set_cchhb (cchhb_t * addr, u_int16_t cc, u_int16_t hh, u_int8_t b); |
| void vtoc_set_date (labeldate_t * d, u_int8_t year, u_int16_t day); |
| |
| void vtoc_volume_label_init (volume_label_t *vlabel); |
| |
| int vtoc_read_volume_label (int fd, unsigned long vlabel_start, |
| volume_label_t * vlabel); |
| |
| int vtoc_write_volume_label (int fd, unsigned long vlabel_start, |
| volume_label_t *vlabel); |
| |
| void vtoc_volume_label_set_volser (volume_label_t *vlabel, char *volser); |
| |
| char *vtoc_volume_label_get_volser (volume_label_t *vlabel, char *volser); |
| |
| void vtoc_volume_label_set_key (volume_label_t *vlabel, char *key); |
| |
| void vtoc_volume_label_set_label (volume_label_t *vlabel, char *lbl); |
| |
| char *vtoc_volume_label_get_label (volume_label_t *vlabel, char *lbl); |
| |
| void vtoc_read_label (int fd, unsigned long position, format1_label_t *f1, |
| format4_label_t *f4, format5_label_t *f5, |
| format7_label_t *f7); |
| |
| void vtoc_write_label (int fd, unsigned long position, format1_label_t *f1, |
| format4_label_t *f4, format5_label_t *f5, |
| format7_label_t *f7); |
| |
| void vtoc_init_format1_label (char *volid, unsigned int blksize, |
| extent_t *part_extent, format1_label_t *f1); |
| |
| void vtoc_init_format4_label (format4_label_t *f4lbl, |
| unsigned int usable_partitions, |
| unsigned int cylinders, |
| unsigned int tracks, |
| unsigned int blocks, |
| unsigned int blksize, |
| u_int16_t dev_type); |
| |
| void vtoc_update_format4_label (format4_label_t *f4, cchhb_t *highest_f1, |
| u_int16_t unused_update); |
| |
| void vtoc_init_format5_label (format5_label_t *f5); |
| |
| void vtoc_update_format5_label_add (format5_label_t *f5, int verbose, int cyl, |
| int trk, u_int16_t a, u_int16_t b, |
| u_int8_t c); |
| |
| void vtoc_update_format5_label_del (format5_label_t *f5, int verbose, int cyl, |
| int trk, u_int16_t a, u_int16_t b, |
| u_int8_t c); |
| |
| void vtoc_init_format7_label (format7_label_t *f7); |
| |
| void vtoc_update_format7_label_add (format7_label_t *f7, int verbose, |
| u_int32_t a, u_int32_t b); |
| |
| void vtoc_update_format7_label_del (format7_label_t *f7, int verbose, |
| u_int32_t a, u_int32_t b); |
| |
| void vtoc_set_freespace(format4_label_t *f4, format5_label_t *f5, |
| format7_label_t *f7, char ch, int verbose, |
| u_int32_t start, u_int32_t stop, int cyl, int trk); |
| |
| #endif /* VTOC_H */ |
