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
  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
  42 typedef struct ttr
  43 {
  44         __u16 tt;
  45         __u8  r;
  46 } __attribute__ ((packed)) ttr_t;
  47
  48 typedef struct cchhb
  49 {
  50         __u16 cc;
  51         __u16 hh;
  52         __u8 b;
  53 } __attribute__ ((packed)) cchhb_t;
  54
  55 typedef struct cchh
  56 {
  57         __u16 cc;
  58         __u16 hh;
  59 } __attribute__ ((packed)) cchh_t;
  60
  61 typedef struct labeldate
  62 {
  63         __u8  year;
  64         __u16 day;
  65 } __attribute__ ((packed)) labeldate_t;
  66
  67
  68 typedef 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
  86 typedef 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
  95 typedef 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
 110 typedef 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
 147 typedef 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
 177 typedef 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
 185 typedef 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
 196 typedef struct ds7ext
 197 {
 198         __u32 a;                  /* starting RTA value                      */
 199         __u32 b;                  /* ending RTA value + 1                    */
 200 } __attribute__ ((packed)) ds7ext_t;
 201
 202
 203 typedef 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
 214 char * vtoc_ebcdic_enc (
 215         unsigned char source[LINE_LENGTH],
 216         unsigned char target[LINE_LENGTH],
 217         int l);
 218 char * vtoc_ebcdic_dec (
 219         unsigned char source[LINE_LENGTH],
 220         unsigned char target[LINE_LENGTH],
 221         int l);
 222 void vtoc_set_extent (
 223         extent_t * ext,
 224         __u8 typeind,
 225         __u8 seqno,
 226         cchh_t * lower,
 227         cchh_t * upper);
 228 void vtoc_set_cchh (
 229         cchh_t * addr,
 230         __u16 cc,
 231         __u16 hh);
 232 void vtoc_set_cchhb (
 233         cchhb_t * addr,
 234         __u16 cc,
 235         __u16 hh,
 236         __u8 b);
 237 void vtoc_set_date (
 238         labeldate_t * d,
 239         __u8 year,
 240         __u16 day);
 241
 242 void vtoc_volume_label_init (
 243         volume_label_t *vlabel);
 244
 245 int vtoc_read_volume_label (
 246         char * device,
 247         unsigned long vlabel_start,
 248         volume_label_t * vlabel);
 249
 250 int vtoc_write_volume_label (
 251         char *device,
 252         unsigned long vlabel_start,
 253         volume_label_t *vlabel);
 254
 255 void vtoc_volume_label_set_volser (
 256         volume_label_t *vlabel,
 257         char *volser);
 258
 259 char *vtoc_volume_label_get_volser (
 260         volume_label_t *vlabel,
 261         char *volser);
 262
 263 void vtoc_volume_label_set_key (
 264         volume_label_t *vlabel,
 265         char *key);
 266
 267 void vtoc_volume_label_set_label (
 268         volume_label_t *vlabel,
 269         char *lbl);
 270
 271 char *vtoc_volume_label_get_label (
 272         volume_label_t *vlabel,
 273         char *lbl);
 274
 275 void 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
 283 void 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
 292 void vtoc_init_format1_label (
 293         char *volid,
 294         unsigned int blksize,
 295         extent_t *part_extent,
 296         format1_label_t *f1);
 297
 298
 299 void 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
 308 void vtoc_update_format4_label (
 309         format4_label_t *f4,
 310         cchhb_t *highest_f1,
 311         __u16 unused_update);
 312
 313
 314 void vtoc_init_format5_label (
 315         format5_label_t *f5);
 316
 317 void 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
 326 void 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
 336 void vtoc_init_format7_label (
 337         format7_label_t *f7);
 338
 339 void vtoc_update_format7_label_add (
 340         format7_label_t *f7,
 341         int verbose,
 342         __u32 a,
 343         __u32 b);
 344
 345 void vtoc_update_format7_label_del (
 346         format7_label_t *f7,
 347         int verbose,
 348         __u32 a,
 349         __u32 b);
 350
 351
 352 void 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);
 362
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