2.11BSD#431 - /usr/src/usr.sbin/bad144/bad144.c

   1: /*
   2:  * bad144
   3:  *
   4:  * This program prints and/or initializes a bad block record for a pack,
   5:  * in the format used by the DEC standard 144.
   6:  *
   7:  * BUGS:
   8:  *	Only reads/writes the first of the bad block record (sector 0
   9:  *	of the last track of the disk); in fact, there are copies
  10:  *	of the information in the first 5 even numbered sectors of this
  11:  *	track, but UNIX uses only the first, and we don't bother with the
  12:  *	others.
  13:  *
  14:  * It is preferable to write the bad information with a standard formatter,
  15:  * but this program will do in a pinch, e.g. if the bad information is
  16:  * accidentally wiped out this is a much faster way of restoring it than
  17:  * reformatting.  To add a new bad sector the formatter must be used in
  18:  * general since UNIX doesn't have on-line formatters to write the BSE
  19:  * error in the header.
  20:  *
  21:  * RP07 entry added August 10, 1993 (thanks to Johnny Billquist) - SMS
  22:  *
  23:  * lseek() replaced tell() - Jan 21, 1994 - SMS
  24:  */
  25: #include <sys/param.h>
  26: #ifndef BADSECT
  27: #define BADSECT
  28: #endif !BADSECT
  29: #include <sys/types.h>
  30: #include <sys/dkbad.h>
  31: #include <stdio.h>
  32: 
  33: struct diskinfo {
  34:     char    *di_type;   /* type name of disk */
  35:     daddr_t di_size;    /* size of entire volume in sectors */
  36:     int di_nsect;   /* sectors per track */
  37:     int di_ntrak;   /* tracks per cylinder */
  38: } diskinfo[] = {
  39:     "rk06",     22*3*411L,  22, 3,
  40:     "rk07",     22*3*815L,  22, 3,
  41:     "rm02",     32*5*823L,  32, 5,
  42:     "rm03",     32*5*823L,  32, 5,
  43:     "rm05",     32*19*823L, 32, 19,
  44:     "cdc9766",  32*19*823L, 32, 19,
  45:     "rp04",     22*19*411L, 22, 19,
  46:     "rp05",     22*19*411L, 22, 19,
  47:     "rp06",     22*19*815L, 22, 19,
  48:     "rp07",     50*32*630L, 50, 32,
  49:     "fuji160",  32*10*823L, 32, 10,
  50:     "diva",     33*19*815L, 33, 19,
  51:     "ampex9300",    33*19*815L, 33, 19,
  52:     "si_eagle", 48*20*842L, 48, 20,
  53:     0,
  54: };
  55: union {
  56:     struct  dkbad bad;
  57:     char    buf[512];
  58: } dkbad;
  59: off_t lseek();
  60: long atol();
  61: 
  62: main(argc, argv)
  63:     int argc;
  64:     char **argv;
  65: {
  66:     register struct diskinfo *di;
  67:     register struct bt_bad *bt;
  68:     char name[BUFSIZ];
  69:     int i, f, errs;
  70:     daddr_t bad;
  71:     int toomany = 0;
  72: 
  73:     argc--, argv++;
  74:     if (argc < 2) {
  75:         fprintf(stderr, "usage: bad type disk [ snum [ bn ... ] ]\n");
  76:         fprintf(stderr, "e.g.: bad rk07 hk0\n");
  77:         exit(1);
  78:     }
  79:     for (di = diskinfo; di->di_type; di++)
  80:         if (!strcmp(di->di_type, argv[0]))
  81:             goto found;
  82:     fprintf(stderr, "%s: not a known disk type\n", argv[0]);
  83:     fprintf(stderr, "known types:");
  84:     for (di = diskinfo; di->di_type; di++)
  85:         fprintf(stderr, " %s", di->di_type);
  86:     fprintf(stderr, "\n");
  87:     exit(1);
  88: found:
  89:     sprintf(name, "/dev/r%sh", argv[1]);
  90:     argc -= 2;
  91:     argv += 2;
  92:     if (argc == 0) {
  93:         f = open(name, 0);
  94:         if (f < 0) {
  95:             perror(name);
  96:             exit(1);
  97:         }
  98:         lseek(f, 512 * (di->di_size - di->di_nsect), 0);
  99:         printf("bad block information at 0x%X in %s:\n",
 100:             lseek(f,0L,1), name);
 101:         if (read(f, &dkbad, 512) != 512) {
 102:             fprintf(stderr, "%s: can't read bad block info (wrong type disk?)\n", name);
 103:             exit(1);
 104:         }
 105:         printf("cartridge serial number: %D(10)\n", dkbad.bad.bt_csn);
 106:         switch (dkbad.bad.bt_flag) {
 107:         case -1:
 108:             printf("alignment cartridge\n");
 109:             break;
 110:         case 0:
 111:             break;
 112:         default:
 113:             printf("bt_flag=%x(16)?\n", dkbad.bad.bt_flag);
 114:             break;
 115:         }
 116:         bt = dkbad.bad.bt_bad;
 117:         for (i = 0; i < 126; i++) {
 118:             bad = ((daddr_t)bt->bt_cyl<<16) + bt->bt_trksec;
 119:             if (bad < 0)
 120:                 break;
 121:             if (!toomany && i >= MAXBAD) {
 122:                 toomany++;
 123:     printf("More bad sectors than system supports.\n");
 124:     printf("The remainder are not being replaced automatically...\n");
 125:             }
 126:             printf("sn=%D, cn=%d, tn=%d, sn=%d\n",
 127:                 ((daddr_t)bt->bt_cyl*di->di_ntrak + (bt->bt_trksec>>8)) *
 128:                 di->di_nsect + (bt->bt_trksec&0xff),
 129:                 bt->bt_cyl, bt->bt_trksec>>8, bt->bt_trksec&0xff);
 130:             bt++;
 131:         }
 132:         exit (0);
 133:     }
 134:     f = open(name, 1);
 135:     if (f < 0) {
 136:         perror(name);
 137:         exit(1);
 138:     }
 139:     dkbad.bad.bt_csn = atol(*argv++);
 140:     argc--;
 141:     dkbad.bad.bt_mbz = 0;
 142:     if (argc > 2 * di->di_nsect || argc > MAXBAD) {
 143:         printf("bad: too many bad sectors specified\n");
 144:         if (argc > MAXBAD)
 145:          printf("system is currently configured for only %d\n", MAXBAD);
 146:         else
 147:             printf("limited to %d (only 2 tracks of sectors)\n",
 148:                 2 * di->di_nsect);
 149:         if (2 * di->di_nsect > 126)
 150:             printf("limited to 126 by information format\n");
 151:         exit(1);
 152:     }
 153:     errs = 0;
 154:     i = 0;
 155:     while (argc > 0) {
 156:         long sn = atol(*argv++);
 157:         argc--;
 158:         if (sn < 0 || sn >= di->di_size) {
 159:             printf("%d: out of range [0,%d) for %s\n",
 160:                 sn, di->di_size, di->di_type);
 161:             errs++;
 162:         }
 163:         dkbad.bad.bt_bad[i].bt_cyl = sn / (di->di_nsect*di->di_ntrak);
 164:         sn %= (di->di_nsect*di->di_ntrak);
 165:         dkbad.bad.bt_bad[i].bt_trksec =
 166:             ((sn/di->di_nsect) << 8) + (sn%di->di_nsect);
 167:         i++;
 168:     }
 169:     while (i < 126) {
 170:         dkbad.bad.bt_bad[i].bt_trksec = -1;
 171:         dkbad.bad.bt_bad[i].bt_cyl = -1;
 172:         i++;
 173:     }
 174:     if (errs)
 175:         exit(1);
 176:     lseek(f, 512 * (di->di_size - di->di_nsect), 0);
 177:     if (write(f, (caddr_t)&dkbad, 512) != 512) {
 178:         perror(name);
 179:         exit(1);
 180:     }
 181:     exit(0);
 182: }

Defined functions

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Defined macros