mt.c revision 69248 
1/*
2 * Copyright (c) 1980, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static const char copyright[] =
36"@(#) Copyright (c) 1980, 1993\n\
37	The Regents of the University of California.  All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)mt.c	8.2 (Berkeley) 5/4/95";
43#endif
44static const char rcsid[] =
45  "$FreeBSD: head/usr.bin/mt/mt.c 69248 2000-11-27 06:40:35Z kris $";
46#endif /* not lint */
47
48/*
49 * mt --
50 *   magnetic tape manipulation program
51 */
52#include <sys/types.h>
53#include <sys/ioctl.h>
54#include <sys/mtio.h>
55
56#include <ctype.h>
57#include <err.h>
58#include <fcntl.h>
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62#include <unistd.h>
63
64/* the appropriate sections of <sys/mtio.h> are also #ifdef'd for FreeBSD */
65#if defined(__FreeBSD__)
66/* c_flags */
67#define NEED_2ARGS	0x01
68#define ZERO_ALLOWED	0x02
69#define IS_DENSITY	0x04
70#define DISABLE_THIS	0x08
71#define IS_COMP		0x10
72#endif /* defined(__FreeBSD__) */
73
74#ifndef TRUE
75#define TRUE 1
76#endif
77#ifndef FALSE
78#define FALSE 0
79#endif
80
81struct commands {
82	char *c_name;
83	int c_code;
84	int c_ronly;
85#if defined(__FreeBSD__)
86	int c_flags;
87#endif /* defined(__FreeBSD__) */
88} com[] = {
89	{ "bsf",	MTBSF,	1 },
90	{ "bsr",	MTBSR,	1 },
91#if defined(__FreeBSD__)
92	/* XXX FreeBSD considered "eof" dangerous, since it's being
93	   confused with "eom" (and is an alias for "weof" anyway) */
94	{ "eof",	MTWEOF, 0, DISABLE_THIS },
95#else
96	{ "eof",	MTWEOF, 0 },
97#endif
98	{ "fsf",	MTFSF,	1 },
99	{ "fsr",	MTFSR,	1 },
100	{ "offline",	MTOFFL,	1 },
101	{ "rewind",	MTREW,	1 },
102	{ "rewoffl",	MTOFFL,	1 },
103	{ "status",	MTNOP,	1 },
104#if defined(__FreeBSD__)
105	{ "weof",	MTWEOF,	0, ZERO_ALLOWED },
106#else
107	{ "weof",	MTWEOF,	0 },
108#endif
109#if defined(__FreeBSD__)
110	{ "erase",	MTERASE, 0, ZERO_ALLOWED},
111	{ "blocksize",	MTSETBSIZ, 0, NEED_2ARGS|ZERO_ALLOWED },
112	{ "density",	MTSETDNSTY, 0, NEED_2ARGS|ZERO_ALLOWED|IS_DENSITY },
113	{ "eom",	MTEOD, 1 },
114	{ "eod",	MTEOD, 1 },
115	{ "smk",	MTWSS, 0 },
116	{ "wss",	MTWSS, 0 },
117	{ "fss",	MTFSS, 1 },
118	{ "bss",	MTBSS, 1 },
119	{ "comp",	MTCOMP, 0, NEED_2ARGS|ZERO_ALLOWED|IS_COMP },
120	{ "retension",	MTRETENS, 1 },
121	{ "rdhpos",     MTIOCRDHPOS,  0 },
122	{ "rdspos",     MTIOCRDSPOS,  0 },
123	{ "sethpos",    MTIOCHLOCATE, 0, NEED_2ARGS|ZERO_ALLOWED },
124	{ "setspos",    MTIOCSLOCATE, 0, NEED_2ARGS|ZERO_ALLOWED },
125	{ "errstat",	MTIOCERRSTAT, 0 },
126	{ "setmodel",	MTIOCSETEOTMODEL, 0, NEED_2ARGS|ZERO_ALLOWED },
127	{ "seteotmodel",	MTIOCSETEOTMODEL, 0, NEED_2ARGS|ZERO_ALLOWED },
128	{ "getmodel",	MTIOCGETEOTMODEL },
129	{ "geteotmodel",	MTIOCGETEOTMODEL },
130#endif /* defined(__FreeBSD__) */
131	{ NULL }
132};
133
134void printreg __P((char *, u_int, char *));
135void status __P((struct mtget *));
136void usage __P((void));
137#if defined (__FreeBSD__)
138void st_status (struct mtget *);
139int stringtodens (const char *s);
140const char *denstostring (int d);
141int denstobp(int d, int bpi);
142u_int32_t stringtocomp(const char *s);
143const char * comptostring(u_int32_t comp);
144void warn_eof __P((void));
145#endif /* defined (__FreeBSD__) */
146
147int
148main(argc, argv)
149	int argc;
150	char *argv[];
151{
152	register struct commands *comp;
153	struct mtget mt_status;
154	struct mtop mt_com;
155	int ch, len, mtfd;
156	char *p, *tape;
157
158	if ((tape = getenv("TAPE")) == NULL)
159		tape = DEFTAPE;
160
161	while ((ch = getopt(argc, argv, "f:t:")) != -1)
162		switch(ch) {
163		case 'f':
164		case 't':
165			tape = optarg;
166			break;
167		case '?':
168		default:
169			usage();
170		}
171	argc -= optind;
172	argv += optind;
173
174	if (argc < 1 || argc > 2)
175		usage();
176
177	len = strlen(p = *argv++);
178	for (comp = com;; comp++) {
179		if (comp->c_name == NULL)
180			errx(1, "%s: unknown command", p);
181		if (strncmp(p, comp->c_name, len) == 0)
182			break;
183	}
184#if defined(__FreeBSD__)
185	if((comp->c_flags & NEED_2ARGS) && argc != 2)
186		usage();
187	if(comp->c_flags & DISABLE_THIS) {
188		warn_eof();
189	}
190#endif /* defined(__FreeBSD__) */
191	if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0)
192		err(1, "%s", tape);
193	if (comp->c_code != MTNOP) {
194		mt_com.mt_op = comp->c_code;
195		if (*argv) {
196#if defined (__FreeBSD__)
197			if (!isdigit(**argv) &&
198			    (comp->c_flags & IS_DENSITY)) {
199				const char *dcanon;
200				mt_com.mt_count = stringtodens(*argv);
201				if (mt_com.mt_count == 0)
202					errx(1, "%s: unknown density", *argv);
203				dcanon = denstostring(mt_com.mt_count);
204				if (strcmp(dcanon, *argv) != 0)
205					printf(
206					"Using \"%s\" as an alias for %s\n",
207					       *argv, dcanon);
208				p = "";
209			} else if (!isdigit(**argv) &&
210				   (comp->c_flags & IS_COMP)) {
211
212				mt_com.mt_count = stringtocomp(*argv);
213				if ((u_int32_t)mt_com.mt_count == 0xf0f0f0f0)
214					errx(1, "%s: unknown compression",
215					     *argv);
216				p = "";
217			} else
218				/* allow for hex numbers; useful for density */
219				mt_com.mt_count = strtol(*argv, &p, 0);
220#else
221			mt_com.mt_count = strtol(*argv, &p, 10);
222#endif /* defined(__FreeBSD__) */
223			if ((mt_com.mt_count <=
224#if defined (__FreeBSD__)
225			    ((comp->c_flags & ZERO_ALLOWED)? -1: 0)
226			    && ((comp->c_flags & IS_COMP) == 0)
227#else
228			    0
229#endif /* defined (__FreeBSD__) */
230			    ) || *p)
231				errx(1, "%s: illegal count", *argv);
232		}
233		else
234			mt_com.mt_count = 1;
235#if	defined(__FreeBSD__)
236		switch (comp->c_code) {
237		case MTIOCERRSTAT:
238		{
239			int i;
240			union mterrstat umn;
241			struct scsi_tape_errors *s = &umn.scsi_errstat;
242
243			if (ioctl(mtfd, comp->c_code, (caddr_t)&umn) < 0)
244				err(2, "%s", tape);
245			(void)printf("Last I/O Residual: %u\n", s->io_resid);
246			(void)printf(" Last I/O Command:");
247			for (i = 0; i < sizeof (s->io_cdb); i++)
248				(void)printf(" %02X", s->io_cdb[i]);
249			(void)printf("\n");
250			(void)printf("   Last I/O Sense:\n\n\t");
251			for (i = 0; i < sizeof (s->io_sense); i++) {
252				(void)printf(" %02X", s->io_sense[i]);
253				if (((i + 1) & 0xf) == 0) {
254					(void)printf("\n\t");
255				}
256			}
257			(void)printf("\n");
258			(void)printf("Last Control Residual: %u\n",
259			    s->ctl_resid);
260			(void)printf(" Last Control Command:");
261			for (i = 0; i < sizeof (s->ctl_cdb); i++)
262				(void)printf(" %02X", s->ctl_cdb[i]);
263			(void)printf("\n");
264			(void)printf("   Last Control Sense:\n\n\t");
265			for (i = 0; i < sizeof (s->ctl_sense); i++) {
266				(void)printf(" %02X", s->ctl_sense[i]);
267				if (((i + 1) & 0xf) == 0) {
268					(void)printf("\n\t");
269				}
270			}
271			(void)printf("\n\n");
272			exit(0);
273			/* NOTREACHED */
274		}
275		case MTIOCRDHPOS:
276		case MTIOCRDSPOS:
277		{
278			u_int32_t block;
279			if (ioctl(mtfd, comp->c_code, (caddr_t)&block) < 0)
280				err(2, "%s", tape);
281			(void)printf("%s: %s block location %u\n", tape,
282			    (comp->c_code == MTIOCRDHPOS)? "hardware" :
283			    "logical", block);
284			exit(0);
285			/* NOTREACHED */
286		}
287		case MTIOCSLOCATE:
288		case MTIOCHLOCATE:
289		{
290			u_int32_t block = (u_int32_t)mt_com.mt_count;
291			if (ioctl(mtfd, comp->c_code, (caddr_t)&block) < 0)
292				err(2, "%s", tape);
293			exit(0);
294			/* NOTREACHED */
295		}
296		case MTIOCGETEOTMODEL:
297		{
298			u_int32_t om;
299			if (ioctl(mtfd, MTIOCGETEOTMODEL, (caddr_t)&om) < 0)
300				err(2, "%s", tape);
301			(void)printf("%s: the model is %u filemar%s at EOT\n",
302			    tape, om, (om > 1)? "ks" : "k");
303			exit(0);
304			/* NOTREACHED */
305		}
306		case MTIOCSETEOTMODEL:
307		{
308			u_int32_t om, nm = (u_int32_t)mt_com.mt_count;
309			if (ioctl(mtfd, MTIOCGETEOTMODEL, (caddr_t)&om) < 0)
310				err(2, "%s", tape);
311			if (ioctl(mtfd, comp->c_code, (caddr_t)&nm) < 0)
312				err(2, "%s", tape);
313			(void)printf("%s: old model was %u filemar%s at EOT\n",
314			    tape, om, (om > 1)? "ks" : "k");
315			(void)printf("%s: new model  is %u filemar%s at EOT\n",
316			    tape, nm, (nm > 1)? "ks" : "k");
317			exit(0);
318			/* NOTREACHED */
319		}
320		default:
321			break;
322		}
323#endif
324		if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0)
325			err(1, "%s: %s", tape, comp->c_name);
326	} else {
327		if (ioctl(mtfd, MTIOCGET, &mt_status) < 0)
328			err(1, NULL);
329		status(&mt_status);
330	}
331	exit(0);
332	/* NOTREACHED */
333}
334
335#ifdef vax
336#include <vax/mba/mtreg.h>
337#include <vax/mba/htreg.h>
338
339#include <vax/uba/utreg.h>
340#include <vax/uba/tmreg.h>
341#undef b_repcnt		/* argh */
342#include <vax/uba/tsreg.h>
343#endif
344
345#ifdef sun
346#include <sundev/tmreg.h>
347#include <sundev/arreg.h>
348#endif
349
350#ifdef tahoe
351#include <tahoe/vba/cyreg.h>
352#endif
353
354#if defined(__FreeBSD__) && defined(__i386__)
355#include <machine/wtio.h>
356#endif
357
358struct tape_desc {
359	short	t_type;		/* type of magtape device */
360	char	*t_name;	/* printing name */
361	char	*t_dsbits;	/* "drive status" register */
362	char	*t_erbits;	/* "error" register */
363} tapes[] = {
364#ifdef vax
365	{ MT_ISTS,	"ts11",		0,		TSXS0_BITS },
366	{ MT_ISHT,	"tm03",		HTDS_BITS,	HTER_BITS },
367	{ MT_ISTM,	"tm11",		0,		TMER_BITS },
368	{ MT_ISMT,	"tu78",		MTDS_BITS,	0 },
369	{ MT_ISUT,	"tu45",		UTDS_BITS,	UTER_BITS },
370#endif
371#ifdef sun
372	{ MT_ISCPC,	"TapeMaster",	TMS_BITS,	0 },
373	{ MT_ISAR,	"Archive",	ARCH_CTRL_BITS,	ARCH_BITS },
374#endif
375#ifdef tahoe
376	{ MT_ISCY,	"cipher",	CYS_BITS,	CYCW_BITS },
377#endif
378#if defined (__FreeBSD__)
379	/*
380	 * XXX This is weird.  The st driver reports the tape drive
381	 * as 0x7 (MT_ISAR - Sun/Archive compatible); the wt driver
382	 * either reports MT_ISVIPER1 for an Archive tape, or 0x11
383	 * (MT_ISMFOUR) for other tapes.
384	 * XXX for the wt driver, rely on it behaving like a "standard"
385	 * magtape driver.
386	 */
387	{ MT_ISAR,	"SCSI tape drive", 0,		0 },
388#if defined (__i386__)
389	{ MT_ISVIPER1,	"Archive Viper", WTDS_BITS, WTER_BITS },
390	{ MT_ISMFOUR,	"Wangtek",	 WTDS_BITS, WTER_BITS },
391#endif
392#endif /* defined (__FreeBSD__) */
393	{ 0 }
394};
395
396/*
397 * Interpret the status buffer returned
398 */
399void
400status(bp)
401	register struct mtget *bp;
402{
403	register struct tape_desc *mt;
404
405	for (mt = tapes;; mt++) {
406		if (mt->t_type == 0) {
407			(void)printf("%d: unknown tape drive type\n",
408			    bp->mt_type);
409			return;
410		}
411		if (mt->t_type == bp->mt_type)
412			break;
413	}
414#if defined (__FreeBSD__)
415	if(mt->t_type == MT_ISAR)
416		st_status(bp);
417	else {
418#endif /* defined (__FreeBSD__) */
419	(void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid);
420	printreg("ds", (unsigned short)bp->mt_dsreg, mt->t_dsbits);
421	printreg("\ner", (unsigned short)bp->mt_erreg, mt->t_erbits);
422	(void)putchar('\n');
423#if defined (__FreeBSD__)
424	}
425#endif /* defined (__FreeBSD__) */
426}
427
428/*
429 * Print a register a la the %b format of the kernel's printf.
430 */
431void
432printreg(s, v, bits)
433	char *s;
434	register u_int v;
435	register char *bits;
436{
437	register int i, any = 0;
438	register char c;
439
440	if (bits && *bits == 8)
441		printf("%s=%o", s, v);
442	else
443		printf("%s=%x", s, v);
444	if (!bits)
445		return;
446	bits++;
447	if (v && bits) {
448		putchar('<');
449		while ((i = *bits++)) {
450			if (v & (1 << (i-1))) {
451				if (any)
452					putchar(',');
453				any = 1;
454				for (; (c = *bits) > 32; bits++)
455					putchar(c);
456			} else
457				for (; *bits > 32; bits++)
458					;
459		}
460		putchar('>');
461	}
462}
463
464void
465usage()
466{
467	(void)fprintf(stderr, "usage: mt [-f device] command [ count ]\n");
468	exit(1);
469}
470
471#if defined (__FreeBSD__)
472
473struct densities {
474	int dens;
475	int bpmm;
476	int bpi;
477	const char *name;
478} dens[] = {
479	/*
480	 * Taken from T10 Project 997D
481	 * SCSI-3 Stream Device Commands (SSC)
482	 * Revision 11, 4-Nov-97
483	 */
484	/*Num.  bpmm    bpi     Reference     */
485	{ 0x1,	32,	800,	"X3.22-1983" },
486	{ 0x2,	63,	1600,	"X3.39-1986" },
487	{ 0x3,	246,	6250,	"X3.54-1986" },
488	{ 0x5,	315,	8000,	"X3.136-1986" },
489	{ 0x6,	126,	3200,	"X3.157-1987" },
490	{ 0x7,	252,	6400,	"X3.116-1986" },
491	{ 0x8,	315,	8000,	"X3.158-1987" },
492	{ 0x9,	491,	37871,	"X3.180" },
493	{ 0xA,	262,	6667,	"X3B5/86-199" },
494	{ 0xB,	63,	1600,	"X3.56-1986" },
495	{ 0xC,	500,	12690,	"HI-TC1" },
496	{ 0xD,	999,	25380,	"HI-TC2" },
497	{ 0xF,	394,	10000,	"QIC-120" },
498	{ 0x10,	394,	10000,	"QIC-150" },
499	{ 0x11,	630,	16000,	"QIC-320" },
500	{ 0x12,	2034,	51667,	"QIC-1350" },
501	{ 0x13,	2400,	61000,	"X3B5/88-185A" },
502	{ 0x14,	1703,	43245,	"X3.202-1991" },
503	{ 0x15,	1789,	45434,	"ECMA TC17" },
504	{ 0x16,	394,	10000,	"X3.193-1990" },
505	{ 0x17,	1673,	42500,	"X3B5/91-174" },
506	{ 0x18,	1673,	42500,	"X3B5/92-50" },
507	{ 0x1C, 1654,	42000,	"QIC-385M" },
508	{ 0x1D,	1512,	38400,	"QIC-410M" },
509	{ 0x1E, 1385,	36000,	"QIC-1000C" },
510	{ 0x1F,	2666,	67733,	"QIC-2100C" },
511	{ 0x20, 2666,	67733,	"QIC-6GB(M)" },
512	{ 0x21,	2666,	67733,	"QIC-20GB(C)" },
513	{ 0x22,	1600,	40640,	"QIC-2GB(C)" },
514	{ 0x23, 2666,	67733,	"QIC-875M" },
515	{ 0x24,	2400,	61000,	"DDS-2" },
516	{ 0x25,	3816,	97000,	"DDS-3" },
517	{ 0x26,	3816,	97000,	"DDS-4" },
518	{ 0x27,	3056,	77611,	"Mammoth" },
519	{ 0x28,	1491,	37871,	"X3.224" },
520	{ 0, 0, 0, NULL }
521};
522
523struct compression_types {
524	u_int32_t	comp_number;
525	const char 	*name;
526} comp_types[] = {
527	{ 0x00, "none" },
528	{ 0x00, "off" },
529	{ 0x10, "IDRC" },
530	{ 0x20, "DCLZ" },
531	{ 0xffffffff, "enable" },
532	{ 0xffffffff, "on" },
533	{ 0xf0f0f0f0, NULL}
534};
535
536const char *
537denstostring(int d)
538{
539	static char buf[20];
540	struct densities *sd;
541
542	/* densities 0 and 0x7f are handled as special cases */
543	if (d == 0)
544		return "default";
545	if (d == 0x7f)
546		return "same";
547	for (sd = dens; sd->dens; sd++)
548		if (sd->dens == d)
549			break;
550	if (sd->dens == 0)
551		sprintf(buf, "0x%02x", d);
552	else
553		sprintf(buf, "0x%02x:%s", d, sd->name);
554	return buf;
555}
556
557/*
558 * Given a specific density number, return either the bits per inch or bits
559 * per millimeter for the given density.
560 */
561int
562denstobp(int d, int bpi)
563{
564	struct densities *sd;
565
566	for (sd = dens; sd->dens; sd++)
567		if (sd->dens == d)
568			break;
569	if (sd->dens == 0)
570		return(0);
571	else {
572		if (bpi)
573			return(sd->bpi);
574		else
575			return(sd->bpmm);
576	}
577}
578
579int
580stringtodens(const char *s)
581{
582	struct densities *sd;
583	size_t l = strlen(s);
584
585	for (sd = dens; sd->dens; sd++)
586		if (strncasecmp(sd->name, s, l) == 0)
587			break;
588	return sd->dens;
589}
590
591
592const char *
593getblksiz(int bs)
594{
595	static char buf[25];
596	if (bs == 0)
597		return "variable";
598	else {
599		sprintf(buf, "%d bytes", bs);
600		return buf;
601	}
602}
603
604const char *
605comptostring(u_int32_t comp)
606{
607	static char buf[20];
608	struct compression_types *ct;
609
610	if (comp == MT_COMP_DISABLED)
611		return "disabled";
612	else if (comp == MT_COMP_UNSUPP)
613		return "unsupported";
614
615	for (ct = comp_types; ct->name; ct++)
616		if (ct->comp_number == comp)
617			break;
618
619	if (ct->comp_number == 0xf0f0f0f0) {
620		sprintf(buf, "0x%x", comp);
621		return(buf);
622	} else
623		return(ct->name);
624}
625
626u_int32_t
627stringtocomp(const char *s)
628{
629	struct compression_types *ct;
630	size_t l = strlen(s);
631
632	for (ct = comp_types; ct->name; ct++)
633		if (strncasecmp(ct->name, s, l) == 0)
634			break;
635
636	return(ct->comp_number);
637}
638
639void
640st_status(struct mtget *bp)
641{
642	printf("Mode      Density              Blocksize      bpi      "
643	       "Compression\n"
644	       "Current:  %-17s    %-12s   %-7d  %s\n"
645	       "---------available modes---------\n"
646	       "0:        %-17s    %-12s   %-7d  %s\n"
647	       "1:        %-17s    %-12s   %-7d  %s\n"
648	       "2:        %-17s    %-12s   %-7d  %s\n"
649	       "3:        %-17s    %-12s   %-7d  %s\n",
650	       denstostring(bp->mt_density), getblksiz(bp->mt_blksiz),
651	       denstobp(bp->mt_density, TRUE), comptostring(bp->mt_comp),
652	       denstostring(bp->mt_density0), getblksiz(bp->mt_blksiz0),
653	       denstobp(bp->mt_density0, TRUE), comptostring(bp->mt_comp0),
654	       denstostring(bp->mt_density1), getblksiz(bp->mt_blksiz1),
655	       denstobp(bp->mt_density1, TRUE), comptostring(bp->mt_comp1),
656	       denstostring(bp->mt_density2), getblksiz(bp->mt_blksiz2),
657	       denstobp(bp->mt_density2, TRUE), comptostring(bp->mt_comp2),
658	       denstostring(bp->mt_density3), getblksiz(bp->mt_blksiz3),
659	       denstobp(bp->mt_density3, TRUE), comptostring(bp->mt_comp3));
660
661	if (bp->mt_dsreg != MTIO_DSREG_NIL) {
662		auto char foo[32];
663		const char sfmt[] = "Current Driver State: %s.\n";
664		printf("---------------------------------\n");
665		switch (bp->mt_dsreg) {
666		case MTIO_DSREG_REST:
667			printf(sfmt, "at rest");
668			break;
669		case MTIO_DSREG_RBSY:
670			printf(sfmt, "Communicating with drive");
671			break;
672		case MTIO_DSREG_WR:
673			printf(sfmt, "Writing");
674			break;
675		case MTIO_DSREG_FMK:
676			printf(sfmt, "Writing Filemarks");
677			break;
678		case MTIO_DSREG_ZER:
679			printf(sfmt, "Erasing");
680			break;
681		case MTIO_DSREG_RD:
682			printf(sfmt, "Reading");
683			break;
684		case MTIO_DSREG_FWD:
685			printf(sfmt, "Spacing Forward");
686			break;
687		case MTIO_DSREG_REV:
688			printf(sfmt, "Spacing Reverse");
689			break;
690		case MTIO_DSREG_POS:
691			printf(sfmt,
692			    "Hardware Positioning (direction unknown)");
693			break;
694		case MTIO_DSREG_REW:
695			printf(sfmt, "Rewinding");
696			break;
697		case MTIO_DSREG_TEN:
698			printf(sfmt, "Retensioning");
699			break;
700		case MTIO_DSREG_UNL:
701			printf(sfmt, "Unloading");
702			break;
703		case MTIO_DSREG_LD:
704			printf(sfmt, "Loading");
705			break;
706		default:
707			(void) sprintf(foo, "Unknown state 0x%x", bp->mt_dsreg);
708			printf(sfmt, foo);
709			break;
710		}
711	}
712	if (bp->mt_fileno == (daddr_t) -1 || bp->mt_blkno == (daddr_t) -1)
713		return;
714	printf("---------------------------------\n");
715	printf("File Number: %ld\tRecord Number: %ld\n", bp->mt_fileno,
716	    bp->mt_blkno);
717}
718
719void
720warn_eof(void)
721{
722	fprintf(stderr,
723		"The \"eof\" command has been disabled.\n"
724		"Use \"weof\" if you really want to write end-of-file marks,\n"
725		"or \"eom\" if you rather want to skip to the end of "
726		"recorded medium.\n");
727	exit(1);
728}
729
730#endif /* defined (__FreeBSD__) */
731