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