/* * Copyright (c) 1980 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1980 The Regents of the University of California.\n\ All rights reserved.\n"; #endif /* not lint */ #ifndef lint /*static char sccsid[] = "from: @(#)mt.c 5.6 (Berkeley) 6/6/91";*/ static char rcsid[] = "$Id: mt.c,v 1.4 1994/04/05 21:13:55 mycroft Exp $"; #endif /* not lint */ /* * mt -- * magnetic tape manipulation program */ #include #include #include #include #include #include #include #include #include static void printreg(); static void status(); static void usage(); struct commands { char *c_name; int c_code; int c_ronly; } com[] = { { "weof", MTWEOF, 0 }, { "eof", MTWEOF, 0 }, { "fsf", MTFSF, 1 }, { "bsf", MTBSF, 1 }, { "fsr", MTFSR, 1 }, { "bsr", MTBSR, 1 }, { "rewind", MTREW, 1 }, { "offline", MTOFFL, 1 }, { "rewoffl", MTOFFL, 1 }, { "status", MTNOP, 1 }, { "retension", MTRETEN, 1 }, { "erase", MTERASE, 0 }, { "eom", MTEOM, 1 }, { "nbsf", MTNBSF, 1 }, { 0 } }; int mtfd; struct mtop mt_com; struct mtget mt_status; char *tape = NULL; int main(argc, argv) int argc; char **argv; { register char *cp; register struct commands *comp; int c; while ((c = getopt(argc, argv, "f:t:")) != -1) { switch (c) { case 'f': case 't': tape = optarg; break; default: usage(); /* NOTREACHED */ } } argc -= optind; argv += optind; if (argc < 1 || argc > 2) { usage(); /* NOTREACHED */ } cp = argv[0]; for (comp = com; comp->c_name != NULL; comp++) if (strncmp(cp, comp->c_name, strlen(cp)) == 0) break; if (comp->c_name == NULL) { errx(1, "don't grok \"%s\"", cp); /* NOTREACHED */ } if (tape == NULL) { if ((tape = getenv("TAPE")) == NULL) tape = DEFTAPE; } if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0) { err(1, "%s", tape); /* NOTREACHED */ } if (comp->c_code != MTNOP) { mt_com.mt_op = comp->c_code; mt_com.mt_count = (argc == 2 ? atoi(argv[1]) : 1); if (mt_com.mt_count < 0) { errx(1, "negative repeat count"); /* NOTREACHED */ } if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0) { err(2, "%s %s %d failed", tape, comp->c_name, mt_com.mt_count); /* NOTREACHED */ } } else { if (ioctl(mtfd, MTIOCGET, (char *)&mt_status) < 0) { err(2, NULL); /* NOTREACHED */ } status(&mt_status); } exit(0); } #ifdef vax #include #include #include #include #undef b_repcnt /* argh */ #include #endif #ifdef sun #include #include #endif #ifdef tahoe #include #endif struct tape_desc { short t_type; /* type of magtape device */ char *t_name; /* printing name */ char *t_dsbits; /* "drive status" register */ char *t_erbits; /* "error" register */ } tapes[] = { #ifdef vax { MT_ISTS, "ts11", 0, TSXS0_BITS }, { MT_ISHT, "tm03", HTDS_BITS, HTER_BITS }, { MT_ISTM, "tm11", 0, TMER_BITS }, { MT_ISMT, "tu78", MTDS_BITS, 0 }, { MT_ISUT, "tu45", UTDS_BITS, UTER_BITS }, #endif #ifdef sun { MT_ISCPC, "TapeMaster", TMS_BITS, 0 }, { MT_ISAR, "Archive", ARCH_CTRL_BITS, ARCH_BITS }, #endif #ifdef tahoe { MT_ISCY, "cipher", CYS_BITS, CYCW_BITS }, #endif { 0 } }; /* * Interpret the status buffer returned */ static void status(bp) register struct mtget *bp; { register struct tape_desc *mt; for (mt = tapes; mt->t_type; mt++) if (mt->t_type == bp->mt_type) break; if (mt->t_type == 0) { printf("unknown tape drive type (%d)\n", bp->mt_type); return; } printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid); printreg("ds", bp->mt_dsreg, mt->t_dsbits); printreg("\ner", bp->mt_erreg, mt->t_erbits); putchar('\n'); } /* * Print a register a la the %b format of the kernel's printf */ static void printreg(s, v, bits) char *s; register char *bits; register unsigned short v; { register int i, any = 0; register char c; if (bits && *bits == 8) printf("%s=%o", s, v); else printf("%s=%x", s, v); bits++; if (v && bits) { putchar('<'); while (i = *bits++) { if (v & (1 << (i-1))) { if (any) putchar(','); any = 1; for (; (c = *bits) > 32; bits++) putchar(c); } else for (; *bits > 32; bits++) ; } putchar('>'); } } static void usage() { fprintf(stderr, "usage: mt [ -f device ] command [ count ]\n"); exit(1); }