| 1 | static char *sccsid = "@(#)mt.c 4.8 (Berkeley) 83/05/08"; |
| 2 | /* |
| 3 | * mt -- |
| 4 | * magnetic tape manipulation program |
| 5 | */ |
| 6 | #include <stdio.h> |
| 7 | #include <ctype.h> |
| 8 | #include <sys/types.h> |
| 9 | #include <sys/mtio.h> |
| 10 | #include <sys/ioctl.h> |
| 11 | |
| 12 | #define equal(s1,s2) (strcmp(s1, s2) == 0) |
| 13 | |
| 14 | struct commands { |
| 15 | char *c_name; |
| 16 | int c_code; |
| 17 | int c_ronly; |
| 18 | } com[] = { |
| 19 | { "weof", MTWEOF, 0 }, |
| 20 | { "eof", MTWEOF, 0 }, |
| 21 | { "fsf", MTFSF, 1 }, |
| 22 | { "bsf", MTBSF, 1 }, |
| 23 | { "fsr", MTFSR, 1 }, |
| 24 | { "bsr", MTBSR, 1 }, |
| 25 | { "rewind", MTREW, 1 }, |
| 26 | { "offline", MTOFFL, 1 }, |
| 27 | { "rewoffl", MTOFFL, 1 }, |
| 28 | { "status", MTNOP, 1 }, |
| 29 | { 0 } |
| 30 | }; |
| 31 | |
| 32 | int mtfd; |
| 33 | struct mtop mt_com; |
| 34 | struct mtget mt_status; |
| 35 | char *tape; |
| 36 | |
| 37 | main(argc, argv) |
| 38 | char **argv; |
| 39 | { |
| 40 | char line[80], *getenv(); |
| 41 | register char *cp; |
| 42 | register struct commands *comp; |
| 43 | |
| 44 | if (argc > 2 && (equal(argv[1], "-t") || equal(argv[1], "-f"))) { |
| 45 | argc -= 2; |
| 46 | tape = argv[2]; |
| 47 | argv += 2; |
| 48 | } else |
| 49 | if ((tape = getenv("TAPE")) == NULL) |
| 50 | tape = DEFTAPE; |
| 51 | if (argc < 2) { |
| 52 | fprintf(stderr, "usage: mt [ -f device ] command [ count ]\n"); |
| 53 | exit(1); |
| 54 | } |
| 55 | cp = argv[1]; |
| 56 | for (comp = com; comp->c_name != NULL; comp++) |
| 57 | if (strncmp(cp, comp->c_name, strlen(cp)) == 0) |
| 58 | break; |
| 59 | if (comp->c_name == NULL) { |
| 60 | fprintf(stderr, "mt: don't grok \"%s\"\n", cp); |
| 61 | exit(1); |
| 62 | } |
| 63 | if ((mtfd = open(tape, comp->c_ronly ? 0 : 2)) < 0) { |
| 64 | perror(tape); |
| 65 | exit(1); |
| 66 | } |
| 67 | if (comp->c_code != MTNOP) { |
| 68 | mt_com.mt_op = comp->c_code; |
| 69 | mt_com.mt_count = (argc > 2 ? atoi(argv[2]) : 1); |
| 70 | if (mt_com.mt_count < 0) { |
| 71 | fprintf(stderr, "mt: negative repeat count\n"); |
| 72 | exit(1); |
| 73 | } |
| 74 | if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0) { |
| 75 | fprintf(stderr, "%s %s %d ", tape, comp->c_name, |
| 76 | mt_com.mt_count); |
| 77 | perror("failed"); |
| 78 | exit(2); |
| 79 | } |
| 80 | } else { |
| 81 | if (ioctl(mtfd, MTIOCGET, (char *)&mt_status) < 0) { |
| 82 | perror("mt"); |
| 83 | exit(2); |
| 84 | } |
| 85 | status(&mt_status); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | #ifdef vax |
| 90 | #include <vaxmba/mtreg.h> |
| 91 | #include <vaxmba/htreg.h> |
| 92 | |
| 93 | #include <vaxuba/utreg.h> |
| 94 | #include <vaxuba/tmreg.h> |
| 95 | #undef b_repcnt /* argh */ |
| 96 | #include <vaxuba/tsreg.h> |
| 97 | #endif |
| 98 | |
| 99 | #ifdef sun |
| 100 | #include <sundev/tmreg.h> |
| 101 | #include <sundev/arreg.h> |
| 102 | #endif |
| 103 | |
| 104 | struct tape_desc { |
| 105 | short t_type; /* type of magtape device */ |
| 106 | char *t_name; /* printing name */ |
| 107 | char *t_dsbits; /* "drive status" register */ |
| 108 | char *t_erbits; /* "error" register */ |
| 109 | } tapes[] = { |
| 110 | #ifdef vax |
| 111 | { MT_ISTS, "ts11", 0, TSXS0_BITS }, |
| 112 | { MT_ISHT, "tm03", HTDS_BITS, HTER_BITS }, |
| 113 | { MT_ISTM, "tm11", 0, TMER_BITS }, |
| 114 | { MT_ISMT, "tu78", MTDS_BITS, 0 }, |
| 115 | { MT_ISUT, "tu45", UTDS_BITS, UTER_BITS }, |
| 116 | #endif |
| 117 | #ifdef sun |
| 118 | { MT_ISCPC, "TapeMaster", TMS_BITS, 0 }, |
| 119 | { MT_ISAR, "Archive", ARCH_CTRL_BITS, ARCH_BITS }, |
| 120 | #endif |
| 121 | { 0 } |
| 122 | }; |
| 123 | |
| 124 | /* |
| 125 | * Interpret the status buffer returned |
| 126 | */ |
| 127 | status(bp) |
| 128 | register struct mtget *bp; |
| 129 | { |
| 130 | register struct tape_desc *mt; |
| 131 | |
| 132 | for (mt = tapes; mt->t_type; mt++) |
| 133 | if (mt->t_type == bp->mt_type) |
| 134 | break; |
| 135 | if (mt->t_type == 0) { |
| 136 | printf("unknown tape drive type (%d)\n", bp->mt_type); |
| 137 | return; |
| 138 | } |
| 139 | printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid); |
| 140 | printreg("ds", bp->mt_dsreg, mt->t_dsbits); |
| 141 | printreg("\ner", bp->mt_erreg, mt->t_erbits); |
| 142 | putchar('\n'); |
| 143 | } |
| 144 | |
| 145 | /* |
| 146 | * Print a register a la the %b format of the kernel's printf |
| 147 | */ |
| 148 | printreg(s, v, bits) |
| 149 | char *s; |
| 150 | register char *bits; |
| 151 | register unsigned short v; |
| 152 | { |
| 153 | register int i, any = 0; |
| 154 | register char c; |
| 155 | |
| 156 | if (bits && *bits == 8) |
| 157 | printf("%s=%o", s, v); |
| 158 | else |
| 159 | printf("%s=%x", s, v); |
| 160 | bits++; |
| 161 | if (v && bits) { |
| 162 | putchar('<'); |
| 163 | while (i = *bits++) { |
| 164 | if (v & (1 << (i-1))) { |
| 165 | if (any) |
| 166 | putchar(','); |
| 167 | any = 1; |
| 168 | for (; (c = *bits) > 32; bits++) |
| 169 | putchar(c); |
| 170 | } else |
| 171 | for (; *bits > 32; bits++) |
| 172 | ; |
| 173 | } |
| 174 | putchar('>'); |
| 175 | } |
| 176 | } |