projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 52ff80b5 BJ |
1 | static char *sccsid = "@(#)bad144.c 4.1 (Berkeley) 81/05/10"; |
| 2 | ||
| 3 | /* | |
| 4 | * bad144 | |
| 5 | * | |
| 6 | * This program prints and/or initializes a bad block record for a pack, | |
| 7 | * in the format used by the DEC standard 144. | |
| 8 | * | |
| 9 | * BUGS: | |
| 10 | * Only reads/writes the first of the bad block record (sector 0 | |
| 11 | * of the last track of the disk); in fact, there are copies | |
| 12 | * of the information in the first 5 even numbered sectors of this | |
| 13 | * track, but UNIX uses only the first, and we don't bother with the | |
| 14 | * others. | |
| 15 | * | |
| 16 | * It is preferable to write the bad information with a standard formatter, | |
| 17 | * but this program will do in a pinch, e.g. if the bad information is | |
| 18 | * accidentally wiped out this is a much faster way of restoring it than | |
| 19 | * reformatting. To add a new bad sector the formatter must be used in | |
| 20 | * general since UNIX doesn't have on-line formatters to write the BSE | |
| 21 | * error in the header. The | |
| 22 | */ | |
| 23 | #include <sys/types.h> | |
| 24 | #include <sys/dkbad.h> | |
| 25 | #include <stdio.h> | |
| 26 | ||
| 27 | struct diskinfo { | |
| 28 | char *di_type; /* type name of disk */ | |
| 29 | int di_size; /* size of entire volume in sectors */ | |
| 30 | int di_nsect; /* sectors per track */ | |
| 31 | int di_ntrak; /* tracks per cylinder */ | |
| 32 | } diskinfo[] = { | |
| 33 | "rk06", 22*3*411, 22, 3, | |
| 34 | "rk07", 22*3*815, 22, 3, | |
| 35 | "rm03", 32*5*823, 32, 5, | |
| 36 | "rm05", 32*19*823, 32, 19, | |
| 37 | "rp06", 22*19*815, 22, 19, | |
| 38 | "rm80", 31*14*559, 31, 14, | |
| 39 | "rp05", 22*19*411, 22, 19, | |
| 40 | "rp07", 50*32*630, 50, 32, | |
| 41 | 0, | |
| 42 | }; | |
| 43 | struct dkbad dkbad; | |
| 44 | ||
| 45 | main(argc, argv) | |
| 46 | int argc; | |
| 47 | char **argv; | |
| 48 | { | |
| 49 | register struct diskinfo *di; | |
| 50 | register struct bt_bad *bt; | |
| 51 | char name[BUFSIZ]; | |
| 52 | int i, f, bad, oldbad, errs; | |
| 53 | ||
| 54 | argc--, argv++; | |
| 55 | if (argc < 2) { | |
| 56 | fprintf(stderr, "usage: bad type disk [ snum [ bn ... ] ]\n"); | |
| 57 | fprintf(stderr, "e.g.: bad rk07 hk0\n"); | |
| 58 | exit(1); | |
| 59 | } | |
| 60 | for (di = diskinfo; di->di_type; di++) | |
| 61 | if (!strcmp(di->di_type, argv[0])) | |
| 62 | goto found; | |
| 63 | fprintf(stderr, "%s: not a known disk type\n", argv[0]); | |
| 64 | fprintf(stderr, "known types:"); | |
| 65 | for (di = diskinfo; di->di_type; di++) | |
| 66 | fprintf(stderr, " %s", di->di_type); | |
| 67 | fprintf(stderr, "\n"); | |
| 68 | exit(1); | |
| 69 | found: | |
| 70 | sprintf(name, "/dev/r%sc", argv[1]); | |
| 71 | argc -= 2; | |
| 72 | argv += 2; | |
| 73 | if (argc == 0) { | |
| 74 | f = open(name, 0); | |
| 75 | if (f < 0) { | |
| 76 | perror(name); | |
| 77 | exit(1); | |
| 78 | } | |
| 79 | lseek(f, 512 * (di->di_size - di->di_nsect), 0); | |
| 80 | printf("bad block information at 0x%x in %s:\n", | |
| 81 | tell(f), name); | |
| 82 | if (read(f, &dkbad, sizeof (struct dkbad)) != | |
| 83 | sizeof (struct dkbad)) { | |
| 84 | fprintf("%s: can't read bad block info (wrong type disk?)\n"); | |
| 85 | exit(1); | |
| 86 | } | |
| 87 | printf("cartidge serial number: %d(10)\n", dkbad.bt_csn); | |
| 88 | switch (dkbad.bt_flag) { | |
| 89 | case -1: | |
| 90 | printf("alignment cartridge\n"); | |
| 91 | break; | |
| 92 | case 0: | |
| 93 | break; | |
| 94 | default: | |
| 95 | printf("bt_flag=%x(16)?\n", dkbad.bt_flag); | |
| 96 | break; | |
| 97 | } | |
| 98 | oldbad = 0; | |
| 99 | bt = dkbad.bt_bad; | |
| 100 | for (i = 0; i < 128; i++) { | |
| 101 | bad = (bt->bt_cyl<<16) + bt->bt_trksec; | |
| 102 | if (bad < 0) | |
| 103 | break; | |
| 104 | printf("sn=%d, cn=%d, tn=%d, sn=%d\n", | |
| 105 | (bt->bt_cyl*di->di_ntrak + (bt->bt_trksec>>8)) * | |
| 106 | di->di_nsect + (bt->bt_trksec&0xff), | |
| 107 | bt->bt_cyl, bt->bt_trksec>>8, bt->bt_trksec&0xff); | |
| 108 | bt++; | |
| 109 | } | |
| 110 | exit (0); | |
| 111 | } | |
| 112 | f = open(name, 1); | |
| 113 | if (f < 0) { | |
| 114 | perror(name); | |
| 115 | exit(1); | |
| 116 | } | |
| 117 | dkbad.bt_csn = atoi(*argv++); | |
| 118 | argc--; | |
| 119 | dkbad.bt_magic = 0; | |
| 120 | if (argc > 2 * di->di_nsect || argc > 126) { | |
| 121 | printf("bad: too many bad sectors specified\n"); | |
| 122 | if (2 * di->di_nsect > 126) | |
| 123 | printf("limited to 126 by information format\n"); | |
| 124 | else | |
| 125 | printf("limited to %d (only 2 tracks of sectors)\n", | |
| 126 | 2 * di->di_nsect); | |
| 127 | exit(1); | |
| 128 | } | |
| 129 | errs = 0; | |
| 130 | i = 0; | |
| 131 | while (argc > 0) { | |
| 132 | int sn = atoi(*argv++); | |
| 133 | argc--; | |
| 134 | if (sn < 0 || sn >= di->di_size) { | |
| 135 | printf("%d: out of range [0,%d) for %s\n", | |
| 136 | sn, di->di_size, di->di_type); | |
| 137 | errs++; | |
| 138 | } | |
| 139 | dkbad.bt_bad[i].bt_cyl = sn / (di->di_nsect*di->di_ntrak); | |
| 140 | sn %= (di->di_nsect*di->di_ntrak); | |
| 141 | dkbad.bt_bad[i].bt_trksec = | |
| 142 | ((sn/di->di_nsect) << 8) + (sn%di->di_nsect); | |
| 143 | i++; | |
| 144 | } | |
| 145 | while (i < 126) { | |
| 146 | dkbad.bt_bad[i].bt_trksec = -1; | |
| 147 | dkbad.bt_bad[i].bt_cyl = -1; | |
| 148 | i++; | |
| 149 | } | |
| 150 | if (errs) | |
| 151 | exit(1); | |
| 152 | lseek(f, 512 * (di->di_size - di->di_nsect), 0); | |
| 153 | if (write(f, (caddr_t)&dkbad, sizeof (dkbad)) != sizeof (dkbad)) { | |
| 154 | perror(name); | |
| 155 | exit(1); | |
| 156 | } | |
| 157 | exit(0); | |
| 158 | } |