home *** CD-ROM | disk | FTP | other *** search
- /*
- * 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[] = "@(#)mt.c 5.6 (Berkeley) 6/6/91";
- #endif /* not lint */
-
- /*
- * mt --
- * magnetic tape manipulation program
- */
- #include <sys/types.h>
- #include <sys/ioctl.h>
- #include <sys/mtio.h>
- #include <fcntl.h>
- #include <stdio.h>
- #include <ctype.h>
-
- #define equal(s1,s2) (strcmp(s1, s2) == 0)
-
- 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 },
- { 0 }
- };
-
- int mtfd;
- struct mtop mt_com;
- struct mtget mt_status;
- char *tape;
-
- main(argc, argv)
- char **argv;
- {
- char line[80], *getenv();
- register char *cp;
- register struct commands *comp;
-
- if (argc > 2 && (equal(argv[1], "-t") || equal(argv[1], "-f"))) {
- argc -= 2;
- tape = argv[2];
- argv += 2;
- } else
- if ((tape = getenv("TAPE")) == NULL)
- tape = DEFTAPE;
- if (argc < 2) {
- fprintf(stderr, "usage: mt [ -f device ] command [ count ]\n");
- exit(1);
- }
- cp = argv[1];
- for (comp = com; comp->c_name != NULL; comp++)
- if (strncmp(cp, comp->c_name, strlen(cp)) == 0)
- break;
- if (comp->c_name == NULL) {
- fprintf(stderr, "mt: don't grok \"%s\"\n", cp);
- exit(1);
- }
- if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0) {
- perror(tape);
- exit(1);
- }
- if (comp->c_code != MTNOP) {
- mt_com.mt_op = comp->c_code;
- mt_com.mt_count = (argc > 2 ? atoi(argv[2]) : 1);
- if (mt_com.mt_count < 0) {
- fprintf(stderr, "mt: negative repeat count\n");
- exit(1);
- }
- if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0) {
- fprintf(stderr, "%s %s %d ", tape, comp->c_name,
- mt_com.mt_count);
- perror("failed");
- exit(2);
- }
- } else {
- if (ioctl(mtfd, MTIOCGET, (char *)&mt_status) < 0) {
- perror("mt");
- exit(2);
- }
- status(&mt_status);
- }
- }
-
- #ifdef vax
- #include <vaxmba/mtreg.h>
- #include <vaxmba/htreg.h>
-
- #include <vaxuba/utreg.h>
- #include <vaxuba/tmreg.h>
- #undef b_repcnt /* argh */
- #include <vaxuba/tsreg.h>
- #endif
-
- #ifdef sun
- #include <sundev/tmreg.h>
- #include <sundev/arreg.h>
- #endif
-
- #ifdef tahoe
- #include <tahoe/vba/cyreg.h>
- #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
- */
- 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
- */
- 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('>');
- }
- }
-