NetBSD/bin/mt/mt.c

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/*
* 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";
static char rcsid[] = "$Header: /cvsroot/src/bin/mt/mt.c,v 1.1 1993/03/25 08:01:35 cgd Exp $";
#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('>');
}
}