linux-old/include/asm-s390/vtoc.h
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   1#ifndef __KERNEL__
   2#include <string.h>
   3#include <stdlib.h>
   4#include <stdio.h>
   5#include <errno.h>
   6#include <ctype.h>
   7#include <time.h>
   8#include <fcntl.h>
   9#include <unistd.h>
  10
  11#include <sys/stat.h>
  12#include <sys/ioctl.h>
  13
  14#include <linux/fs.h>
  15#include <linux/types.h>
  16#include <linux/hdreg.h>
  17#include <linux/version.h>
  18#include <asm/dasd.h>
  19#endif
  20
  21
  22#define LINE_LENGTH 80
  23#define VTOC_START_CC 0x0
  24#define VTOC_START_HH 0x1
  25#define FIRST_USABLE_CYL 1
  26#define FIRST_USABLE_TRK 2
  27
  28#define DASD_3380_TYPE 13148
  29#define DASD_3390_TYPE 13200
  30#define DASD_9345_TYPE 37701
  31
  32#define DASD_3380_VALUE 0xbb60
  33#define DASD_3390_VALUE 0xe5a2
  34#define DASD_9345_VALUE 0xbc98
  35
  36#define VOLSER_LENGTH 6
  37#define BIG_DISK_SIZE 0x10000
  38
  39#define VTOC_ERROR "VTOC error:"
  40
  41
  42typedef struct ttr 
  43{
  44        __u16 tt;
  45        __u8  r;
  46} __attribute__ ((packed)) ttr_t;
  47
  48typedef struct cchhb 
  49{
  50        __u16 cc;
  51        __u16 hh;
  52        __u8 b;
  53} __attribute__ ((packed)) cchhb_t;
  54
  55typedef struct cchh 
  56{
  57        __u16 cc;
  58        __u16 hh;
  59} __attribute__ ((packed)) cchh_t;
  60
  61typedef struct labeldate 
  62{
  63        __u8  year;
  64        __u16 day;
  65} __attribute__ ((packed)) labeldate_t;
  66
  67
  68typedef struct volume_label 
  69{
  70        char volkey[4];         /* volume key = volume label                 */
  71        char vollbl[4];         /* volume label                              */
  72        char volid[6];          /* volume identifier                         */
  73        __u8 security;          /* security byte                             */
  74        cchhb_t vtoc;           /* VTOC address                              */
  75        char res1[5];           /* reserved                                  */
  76        char cisize[4];         /* CI-size for FBA,...                       */
  77                                /* ...blanks for CKD                         */
  78        char blkperci[4];       /* no of blocks per CI (FBA), blanks for CKD */
  79        char labperci[4];       /* no of labels per CI (FBA), blanks for CKD */
  80        char res2[4];           /* reserved                                  */
  81        char lvtoc[14];         /* owner code for LVTOC                      */
  82        char res3[29];          /* reserved                                  */
  83} __attribute__ ((packed)) volume_label_t;
  84
  85
  86typedef struct extent 
  87{
  88        __u8  typeind;          /* extent type indicator                     */
  89        __u8  seqno;            /* extent sequence number                    */
  90        cchh_t llimit;          /* starting point of this extent             */
  91        cchh_t ulimit;          /* ending point of this extent               */
  92} __attribute__ ((packed)) extent_t;
  93
  94
  95typedef struct dev_const 
  96{
  97        __u16 DS4DSCYL;           /* number of logical cyls                  */
  98        __u16 DS4DSTRK;           /* number of tracks in a logical cylinder  */
  99        __u16 DS4DEVTK;           /* device track length                     */
 100        __u8  DS4DEVI;            /* non-last keyed record overhead          */
 101        __u8  DS4DEVL;            /* last keyed record overhead              */
 102        __u8  DS4DEVK;            /* non-keyed record overhead differential  */
 103        __u8  DS4DEVFG;           /* flag byte                               */
 104        __u16 DS4DEVTL;           /* device tolerance                        */
 105        __u8  DS4DEVDT;           /* number of DSCB's per track              */
 106        __u8  DS4DEVDB;           /* number of directory blocks per track    */
 107} __attribute__ ((packed)) dev_const_t;
 108
 109
 110typedef struct format1_label 
 111{
 112        char  DS1DSNAM[44];       /* data set name                           */
 113        __u8  DS1FMTID;           /* format identifier                       */
 114        char  DS1DSSN[6];         /* data set serial number                  */
 115        __u16 DS1VOLSQ;           /* volume sequence number                  */
 116        labeldate_t DS1CREDT;     /* creation date: ydd                      */
 117        labeldate_t DS1EXPDT;     /* expiration date                         */
 118        __u8  DS1NOEPV;           /* number of extents on volume             */
 119        __u8  DS1NOBDB;           /* no. of bytes used in last direction blk */
 120        __u8  DS1FLAG1;           /* flag 1                                  */
 121        char  DS1SYSCD[13];       /* system code                             */
 122        labeldate_t DS1REFD;      /* date last referenced                    */
 123        __u8  DS1SMSFG;           /* system managed storage indicators       */
 124        __u8  DS1SCXTF;           /* sec. space extension flag byte          */
 125        __u16 DS1SCXTV;           /* secondary space extension value         */
 126        __u8  DS1DSRG1;           /* data set organisation byte 1            */
 127        __u8  DS1DSRG2;           /* data set organisation byte 2            */
 128        __u8  DS1RECFM;           /* record format                           */
 129        __u8  DS1OPTCD;           /* option code                             */
 130        __u16 DS1BLKL;            /* block length                            */
 131        __u16 DS1LRECL;           /* record length                           */
 132        __u8  DS1KEYL;            /* key length                              */
 133        __u16 DS1RKP;             /* relative key position                   */
 134        __u8  DS1DSIND;           /* data set indicators                     */
 135        __u8  DS1SCAL1;           /* secondary allocation flag byte          */
 136        char DS1SCAL3[3];         /* secondary allocation quantity           */
 137        ttr_t DS1LSTAR;           /* last used track and block on track      */
 138        __u16 DS1TRBAL;           /* space remaining on last used track      */
 139        __u16 res1;               /* reserved                                */
 140        extent_t DS1EXT1;         /* first extent description                */
 141        extent_t DS1EXT2;         /* second extent description               */
 142        extent_t DS1EXT3;         /* third extent description                */
 143        cchhb_t DS1PTRDS;         /* possible pointer to f2 or f3 DSCB       */
 144} __attribute__ ((packed)) format1_label_t;
 145
 146
 147typedef struct format4_label 
 148{
 149        char  DS4KEYCD[44];       /* key code for VTOC labels: 44 times 0x04 */
 150        __u8  DS4IDFMT;           /* format identifier                       */
 151        cchhb_t DS4HPCHR;         /* highest address of a format 1 DSCB      */
 152        __u16 DS4DSREC;           /* number of available DSCB's              */
 153        cchh_t DS4HCCHH;          /* CCHH of next available alternate track  */
 154        __u16 DS4NOATK;           /* number of remaining alternate tracks    */
 155        __u8  DS4VTOCI;           /* VTOC indicators                         */
 156        __u8  DS4NOEXT;           /* number of extents in VTOC               */
 157        __u8  DS4SMSFG;           /* system managed storage indicators       */
 158        __u8  DS4DEVAC;           /* number of alternate cylinders. 
 159                                     Subtract from first two bytes of 
 160                                     DS4DEVSZ to get number of usable
 161                                     cylinders. can be zero. valid
 162                                     only if DS4DEVAV on.                    */
 163        dev_const_t DS4DEVCT;     /* device constants                        */
 164        char DS4AMTIM[8];         /* VSAM time stamp                         */
 165        char DS4AMCAT[3];         /* VSAM catalog indicator                  */
 166        char DS4R2TIM[8];         /* VSAM volume/catalog match time stamp    */
 167        char res1[5];             /* reserved                                */
 168        char DS4F6PTR[5];         /* pointer to first format 6 DSCB          */
 169        extent_t DS4VTOCE;        /* VTOC extent description                 */
 170        char res2[10];            /* reserved                                */
 171        __u8 DS4EFLVL;            /* extended free-space management level    */
 172        cchhb_t DS4EFPTR;         /* pointer to extended free-space info     */
 173        char res3[9];             /* reserved                                */
 174} __attribute__ ((packed)) format4_label_t;
 175
 176
 177typedef struct ds5ext 
 178{
 179        __u16 t;                  /* RTA of the first track of free extent   */
 180        __u16 fc;                 /* number of whole cylinders in free ext.  */
 181        __u8  ft;                 /* number of remaining free tracks         */
 182} __attribute__ ((packed)) ds5ext_t;
 183
 184
 185typedef struct format5_label 
 186{
 187        char DS5KEYID[4];         /* key identifier                          */
 188        ds5ext_t DS5AVEXT;        /* first available (free-space) extent.    */
 189        ds5ext_t DS5EXTAV[7];     /* seven available extents                 */
 190        __u8 DS5FMTID;            /* format identifier                       */
 191        ds5ext_t DS5MAVET[18];    /* eighteen available extents              */
 192        cchhb_t DS5PTRDS;         /* pointer to next format5 DSCB            */
 193} __attribute__ ((packed)) format5_label_t;
 194
 195
 196typedef struct ds7ext 
 197{
 198        __u32 a;                  /* starting RTA value                      */
 199        __u32 b;                  /* ending RTA value + 1                    */
 200} __attribute__ ((packed)) ds7ext_t;
 201
 202
 203typedef struct format7_label 
 204{
 205        char DS7KEYID[4];         /* key identifier                          */
 206        ds7ext_t DS7EXTNT[5];     /* space for 5 extent descriptions         */
 207        __u8 DS7FMTID;            /* format identifier                       */
 208        ds7ext_t DS7ADEXT[11];    /* space for 11 extent descriptions        */
 209        char res1[2];             /* reserved                                */
 210        cchhb_t DS7PTRDS;         /* pointer to next FMT7 DSCB               */
 211} __attribute__ ((packed)) format7_label_t;
 212
 213
 214char * vtoc_ebcdic_enc (
 215        unsigned char source[LINE_LENGTH],
 216        unsigned char target[LINE_LENGTH],
 217        int l);
 218char * vtoc_ebcdic_dec (
 219        unsigned char source[LINE_LENGTH],
 220        unsigned char target[LINE_LENGTH],
 221        int l);
 222void vtoc_set_extent (
 223        extent_t * ext,
 224        __u8 typeind,
 225        __u8 seqno,
 226        cchh_t * lower,
 227        cchh_t * upper);
 228void vtoc_set_cchh (
 229        cchh_t * addr,
 230        __u16 cc,
 231        __u16 hh);
 232void vtoc_set_cchhb (
 233        cchhb_t * addr,
 234        __u16 cc,
 235        __u16 hh,
 236        __u8 b);
 237void vtoc_set_date (
 238        labeldate_t * d,
 239        __u8 year,
 240        __u16 day);
 241
 242void vtoc_volume_label_init (
 243        volume_label_t *vlabel);
 244
 245int vtoc_read_volume_label (
 246        char * device,
 247        unsigned long vlabel_start,
 248        volume_label_t * vlabel);
 249
 250int vtoc_write_volume_label (
 251        char *device,
 252        unsigned long vlabel_start,
 253        volume_label_t *vlabel);
 254
 255void vtoc_volume_label_set_volser (
 256        volume_label_t *vlabel,
 257        char *volser);
 258
 259char *vtoc_volume_label_get_volser (
 260        volume_label_t *vlabel,
 261        char *volser);
 262
 263void vtoc_volume_label_set_key (
 264        volume_label_t *vlabel,
 265        char *key);     
 266
 267void vtoc_volume_label_set_label (
 268        volume_label_t *vlabel,
 269        char *lbl);
 270
 271char *vtoc_volume_label_get_label (
 272        volume_label_t *vlabel,
 273        char *lbl);
 274
 275void vtoc_read_label (
 276        char *device,
 277        unsigned long position,
 278        format1_label_t *f1,
 279        format4_label_t *f4,
 280        format5_label_t *f5,
 281        format7_label_t *f7);
 282
 283void vtoc_write_label (
 284        char *device,
 285        unsigned long position,
 286        format1_label_t *f1,
 287        format4_label_t *f4,
 288        format5_label_t *f5,
 289        format7_label_t *f7);
 290
 291
 292void vtoc_init_format1_label (
 293        char *volid,
 294        unsigned int blksize,
 295        extent_t *part_extent,
 296        format1_label_t *f1);
 297
 298
 299void vtoc_init_format4_label (
 300        format4_label_t *f4lbl,
 301        unsigned int usable_partitions,
 302        unsigned int cylinders,
 303        unsigned int tracks,
 304        unsigned int blocks,
 305        unsigned int blksize,
 306        __u16 dev_type);
 307
 308void vtoc_update_format4_label (
 309        format4_label_t *f4,
 310        cchhb_t *highest_f1,
 311        __u16 unused_update);
 312
 313
 314void vtoc_init_format5_label (
 315        format5_label_t *f5);
 316
 317void vtoc_update_format5_label_add (
 318        format5_label_t *f5,
 319        int verbose,
 320        int cyl,
 321        int trk,
 322        __u16 a, 
 323        __u16 b, 
 324        __u8 c);
 325 
 326void vtoc_update_format5_label_del (
 327        format5_label_t *f5,
 328        int verbose,
 329        int cyl,
 330        int trk,
 331        __u16 a, 
 332        __u16 b, 
 333        __u8 c);
 334
 335
 336void vtoc_init_format7_label (
 337        format7_label_t *f7);
 338
 339void vtoc_update_format7_label_add (
 340        format7_label_t *f7,
 341        int verbose,
 342        __u32 a, 
 343        __u32 b);
 344
 345void vtoc_update_format7_label_del (
 346        format7_label_t *f7, 
 347        int verbose,
 348        __u32 a, 
 349        __u32 b);
 350
 351
 352void vtoc_set_freespace(
 353        format4_label_t *f4,
 354        format5_label_t *f5,
 355        format7_label_t *f7,
 356        char ch,
 357        int verbose,
 358        __u32 start,
 359        __u32 stop,
 360        int cyl,
 361        int trk);
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