include/asm-s390/vtoc.h

   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 #define DASD_API_VERSION 0
  22
  23 #define LINE_LENGTH 80
  24 #define VTOC_START_CC 0x0
  25 #define VTOC_START_HH 0x1
  26 #define FIRST_USABLE_CYL 1
  27 #define FIRST_USABLE_TRK 2
  28
  29 #define DASD_3380_TYPE 13148
  30 #define DASD_3390_TYPE 13200
  31 #define DASD_9345_TYPE 37701
  32
  33 #define DASD_3380_VALUE 0xbb60
  34 #define DASD_3390_VALUE 0xe5a2
  35 #define DASD_9345_VALUE 0xbc98
  36
  37 #define VOLSER_LENGTH 6
  38 #define BIG_DISK_SIZE 0x10000
  39
  40 #define VTOC_ERROR "VTOC error:"
  41
  42
  43 typedef struct ttr
  44 {
  45         __u16 tt;
  46         __u8  r;
  47 } __attribute__ ((packed)) ttr_t;
  48
  49 typedef struct cchhb
  50 {
  51         __u16 cc;
  52         __u16 hh;
  53         __u8 b;
  54 } __attribute__ ((packed)) cchhb_t;
  55
  56 typedef struct cchh
  57 {
  58         __u16 cc;
  59         __u16 hh;
  60 } __attribute__ ((packed)) cchh_t;
  61
  62 typedef struct labeldate
  63 {
  64         __u8  year;
  65         __u16 day;
  66 } __attribute__ ((packed)) labeldate_t;
  67
  68
  69 typedef struct volume_label
  70 {
  71         char volkey[4];         /* volume key = volume label                 */
  72         char vollbl[4];         /* volume label                              */
  73         char volid[6];          /* volume identifier                         */
  74         __u8 security;          /* security byte                             */
  75         cchhb_t vtoc;           /* VTOC address                              */
  76         char res1[5];           /* reserved                                  */
  77         char cisize[4];         /* CI-size for FBA,...                       */
  78                                 /* ...blanks for CKD                         */
  79         char blkperci[4];       /* no of blocks per CI (FBA), blanks for CKD */
  80         char labperci[4];       /* no of labels per CI (FBA), blanks for CKD */
  81         char res2[4];           /* reserved                                  */
  82         char lvtoc[14];         /* owner code for LVTOC                      */
  83         char res3[29];          /* reserved                                  */
  84 } __attribute__ ((packed)) volume_label_t;
  85
  86
  87 typedef struct extent
  88 {
  89         __u8  typeind;          /* extent type indicator                     */
  90         __u8  seqno;            /* extent sequence number                    */
  91         cchh_t llimit;          /* starting point of this extent             */
  92         cchh_t ulimit;          /* ending point of this extent               */
  93 } __attribute__ ((packed)) extent_t;
  94
  95
  96 typedef struct dev_const
  97 {
  98         __u16 DS4DSCYL;           /* number of logical cyls                  */
  99         __u16 DS4DSTRK;           /* number of tracks in a logical cylinder  */
 100         __u16 DS4DEVTK;           /* device track length                     */
 101         __u8  DS4DEVI;            /* non-last keyed record overhead          */
 102         __u8  DS4DEVL;            /* last keyed record overhead              */
 103         __u8  DS4DEVK;            /* non-keyed record overhead differential  */
 104         __u8  DS4DEVFG;           /* flag byte                               */
 105         __u16 DS4DEVTL;           /* device tolerance                        */
 106         __u8  DS4DEVDT;           /* number of DSCB's per track              */
 107         __u8  DS4DEVDB;           /* number of directory blocks per track    */
 108 } __attribute__ ((packed)) dev_const_t;
 109
 110
 111 typedef struct format1_label
 112 {
 113         char  DS1DSNAM[44];       /* data set name                           */
 114         __u8  DS1FMTID;           /* format identifier                       */
 115         char  DS1DSSN[6];         /* data set serial number                  */
 116         __u16 DS1VOLSQ;           /* volume sequence number                  */
 117         labeldate_t DS1CREDT;     /* creation date: ydd                      */
 118         labeldate_t DS1EXPDT;     /* expiration date                         */
 119         __u8  DS1NOEPV;           /* number of extents on volume             */
 120         __u8  DS1NOBDB;           /* no. of bytes used in last direction blk */
 121         __u8  DS1FLAG1;           /* flag 1                                  */
 122         char  DS1SYSCD[13];       /* system code                             */
 123         labeldate_t DS1REFD;      /* date last referenced                    */
 124         __u8  DS1SMSFG;           /* system managed storage indicators       */
 125         __u8  DS1SCXTF;           /* sec. space extension flag byte          */
 126         __u16 DS1SCXTV;           /* secondary space extension value         */
 127         __u8  DS1DSRG1;           /* data set organisation byte 1            */
 128         __u8  DS1DSRG2;           /* data set organisation byte 2            */
 129         __u8  DS1RECFM;           /* record format                           */
 130         __u8  DS1OPTCD;           /* option code                             */
 131         __u16 DS1BLKL;            /* block length                            */
 132         __u16 DS1LRECL;           /* record length                           */
 133         __u8  DS1KEYL;            /* key length                              */
 134         __u16 DS1RKP;             /* relative key position                   */
 135         __u8  DS1DSIND;           /* data set indicators                     */
 136         __u8  DS1SCAL1;           /* secondary allocation flag byte          */
 137         char DS1SCAL3[3];         /* secondary allocation quantity           */
 138         ttr_t DS1LSTAR;           /* last used track and block on track      */
 139         __u16 DS1TRBAL;           /* space remaining on last used track      */
 140         __u16 res1;               /* reserved                                */
 141         extent_t DS1EXT1;         /* first extent description                */
 142         extent_t DS1EXT2;         /* second extent description               */
 143         extent_t DS1EXT3;         /* third extent description                */
 144         cchhb_t DS1PTRDS;         /* possible pointer to f2 or f3 DSCB       */
 145 } __attribute__ ((packed)) format1_label_t;
 146
 147
 148 typedef struct format4_label
 149 {
 150         char  DS4KEYCD[44];       /* key code for VTOC labels: 44 times 0x04 */
 151         __u8  DS4IDFMT;           /* format identifier                       */
 152         cchhb_t DS4HPCHR;         /* highest address of a format 1 DSCB      */
 153         __u16 DS4DSREC;           /* number of available DSCB's              */
 154         cchh_t DS4HCCHH;          /* CCHH of next available alternate track  */
 155         __u16 DS4NOATK;           /* number of remaining alternate tracks    */
 156         __u8  DS4VTOCI;           /* VTOC indicators                         */
 157         __u8  DS4NOEXT;           /* number of extents in VTOC               */
 158         __u8  DS4SMSFG;           /* system managed storage indicators       */
 159         __u8  DS4DEVAC;           /* number of alternate cylinders.
 160                                      Subtract from first two bytes of
 161                                      DS4DEVSZ to get number of usable
 162                                      cylinders. can be zero. valid
 163                                      only if DS4DEVAV on.                    */
 164         dev_const_t DS4DEVCT;     /* device constants                        */
 165         char DS4AMTIM[8];         /* VSAM time stamp                         */
 166         char DS4AMCAT[3];         /* VSAM catalog indicator                  */
 167         char DS4R2TIM[8];         /* VSAM volume/catalog match time stamp    */
 168         char res1[5];             /* reserved                                */
 169         char DS4F6PTR[5];         /* pointer to first format 6 DSCB          */
 170         extent_t DS4VTOCE;        /* VTOC extent description                 */
 171         char res2[10];            /* reserved                                */
 172         __u8 DS4EFLVL;            /* extended free-space management level    */
 173         cchhb_t DS4EFPTR;         /* pointer to extended free-space info     */
 174         char res3[9];             /* reserved                                */
 175 } __attribute__ ((packed)) format4_label_t;
 176
 177
 178 typedef struct ds5ext
 179 {
 180         __u16 t;                  /* RTA of the first track of free extent   */
 181         __u16 fc;                 /* number of whole cylinders in free ext.  */
 182         __u8  ft;                 /* number of remaining free tracks         */
 183 } __attribute__ ((packed)) ds5ext_t;
 184
 185
 186 typedef struct format5_label
 187 {
 188         char DS5KEYID[4];         /* key identifier                          */
 189         ds5ext_t DS5AVEXT;        /* first available (free-space) extent.    */
 190         ds5ext_t DS5EXTAV[7];     /* seven available extents                 */
 191         __u8 DS5FMTID;            /* format identifier                       */
 192         ds5ext_t DS5MAVET[18];    /* eighteen available extents              */
 193         cchhb_t DS5PTRDS;         /* pointer to next format5 DSCB            */
 194 } __attribute__ ((packed)) format5_label_t;
 195
 196
 197 typedef struct ds7ext
 198 {
 199         __u32 a;                  /* starting RTA value                      */
 200         __u32 b;                  /* ending RTA value + 1                    */
 201 } __attribute__ ((packed)) ds7ext_t;
 202
 203
 204 typedef struct format7_label
 205 {
 206         char DS7KEYID[4];         /* key identifier                          */
 207         ds7ext_t DS7EXTNT[5];     /* space for 5 extent descriptions         */
 208         __u8 DS7FMTID;            /* format identifier                       */
 209         ds7ext_t DS7ADEXT[11];    /* space for 11 extent descriptions        */
 210         char res1[2];             /* reserved                                */
 211         cchhb_t DS7PTRDS;         /* pointer to next FMT7 DSCB               */
 212 } __attribute__ ((packed)) format7_label_t;
 213
 214
 215 char * vtoc_ebcdic_enc (
 216         unsigned char source[LINE_LENGTH],
 217         unsigned char target[LINE_LENGTH],
 218         int l);
 219 char * vtoc_ebcdic_dec (
 220         unsigned char source[LINE_LENGTH],
 221         unsigned char target[LINE_LENGTH],
 222         int l);
 223 void vtoc_set_extent (
 224         extent_t * ext,
 225         __u8 typeind,
 226         __u8 seqno,
 227         cchh_t * lower,
 228         cchh_t * upper);
 229 void vtoc_set_cchh (
 230         cchh_t * addr,
 231         __u16 cc,
 232         __u16 hh);
 233 void vtoc_set_cchhb (
 234         cchhb_t * addr,
 235         __u16 cc,
 236         __u16 hh,
 237         __u8 b);
 238 void vtoc_set_date (
 239         labeldate_t * d,
 240         __u8 year,
 241         __u16 day);
 242
 243 void vtoc_volume_label_init (
 244         volume_label_t *vlabel);
 245
 246 int vtoc_read_volume_label (
 247         char * device,
 248         unsigned long vlabel_start,
 249         volume_label_t * vlabel);
 250
 251 int vtoc_write_volume_label (
 252         char *device,
 253         unsigned long vlabel_start,
 254         volume_label_t *vlabel);
 255
 256 void vtoc_volume_label_set_volser (
 257         volume_label_t *vlabel,
 258         char *volser);
 259
 260 char *vtoc_volume_label_get_volser (
 261         volume_label_t *vlabel,
 262         char *volser);
 263
 264 void vtoc_volume_label_set_key (
 265         volume_label_t *vlabel,
 266         char *key);
 267
 268 void vtoc_volume_label_set_label (
 269         volume_label_t *vlabel,
 270         char *lbl);
 271
 272 char *vtoc_volume_label_get_label (
 273         volume_label_t *vlabel,
 274         char *lbl);
 275
 276 void vtoc_read_label (
 277         char *device,
 278         unsigned long position,
 279         format1_label_t *f1,
 280         format4_label_t *f4,
 281         format5_label_t *f5,
 282         format7_label_t *f7);
 283
 284 void vtoc_write_label (
 285         char *device,
 286         unsigned long position,
 287         format1_label_t *f1,
 288         format4_label_t *f4,
 289         format5_label_t *f5,
 290         format7_label_t *f7);
 291
 292
 293 void vtoc_init_format1_label (
 294         char *volid,
 295         unsigned int blksize,
 296         extent_t *part_extent,
 297         format1_label_t *f1);
 298
 299
 300 void vtoc_init_format4_label (
 301         format4_label_t *f4lbl,
 302         unsigned int usable_partitions,
 303         unsigned int cylinders,
 304         unsigned int tracks,
 305         unsigned int blocks,
 306         unsigned int blksize,
 307         __u16 dev_type);
 308
 309 void vtoc_update_format4_label (
 310         format4_label_t *f4,
 311         cchhb_t *highest_f1,
 312         __u16 unused_update);
 313
 314
 315 void vtoc_init_format5_label (
 316         format5_label_t *f5);
 317
 318 void vtoc_update_format5_label_add (
 319         format5_label_t *f5,
 320         int verbose,
 321         int cyl,
 322         int trk,
 323         __u16 a,
 324         __u16 b,
 325         __u8 c);
 326
 327 void vtoc_update_format5_label_del (
 328         format5_label_t *f5,
 329         int verbose,
 330         int cyl,
 331         int trk,
 332         __u16 a,
 333         __u16 b,
 334         __u8 c);
 335
 336
 337 void vtoc_init_format7_label (
 338         format7_label_t *f7);
 339
 340 void vtoc_update_format7_label_add (
 341         format7_label_t *f7,
 342         int verbose,
 343         __u32 a,
 344         __u32 b);
 345
 346 void vtoc_update_format7_label_del (
 347         format7_label_t *f7,
 348         int verbose,
 349         __u32 a,
 350         __u32 b);
 351
 352
 353 void vtoc_set_freespace(
 354         format4_label_t *f4,
 355         format5_label_t *f5,
 356         format7_label_t *f7,
 357         char ch,
 358         int verbose,
 359         __u32 start,
 360         __u32 stop,
 361         int cyl,
 362         int trk);
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374