xref: /dragonfly/usr.bin/mt/mt.c (revision 333227be)
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  * @(#) Copyright (c) 1980, 1993 The Regents of the University of California.  All rights reserved.
34  * @(#)mt.c	8.2 (Berkeley) 5/4/95
35  * $FreeBSD: src/usr.bin/mt/mt.c,v 1.26.2.3 2002/11/08 11:35:57 joerg Exp $
36  * $DragonFly: src/usr.bin/mt/mt.c,v 1.5 2004/01/22 03:22:53 rob Exp $
37  */
38 
39 /*
40  * mt --
41  *   magnetic tape manipulation program
42  */
43 #include <sys/types.h>
44 #include <sys/ioctl.h>
45 #include <sys/mtio.h>
46 
47 #include <ctype.h>
48 #include <err.h>
49 #include <fcntl.h>
50 #include <stdio.h>
51 #include <stdlib.h>
52 #include <string.h>
53 #include <unistd.h>
54 
55 /* the appropriate sections of <sys/mtio.h> are also #ifdef'd for FreeBSD */
56 #if defined(__DragonFly__)
57 /* c_flags */
58 #define NEED_2ARGS	0x01
59 #define ZERO_ALLOWED	0x02
60 #define IS_DENSITY	0x04
61 #define DISABLE_THIS	0x08
62 #define IS_COMP		0x10
63 #endif /* defined(__DragonFly__) */
64 
65 #ifndef TRUE
66 #define TRUE 1
67 #endif
68 #ifndef FALSE
69 #define FALSE 0
70 #endif
71 
72 struct commands {
73 	char *c_name;
74 	int c_code;
75 	int c_ronly;
76 #if defined(__DragonFly__)
77 	int c_flags;
78 #endif /* defined(__DragonFly__) */
79 } com[] = {
80 	{ "bsf",	MTBSF,	1 },
81 	{ "bsr",	MTBSR,	1 },
82 #if defined(__DragonFly__)
83 	/* XXX FreeBSD considered "eof" dangerous, since it's being
84 	   confused with "eom" (and is an alias for "weof" anyway) */
85 	{ "eof",	MTWEOF, 0, DISABLE_THIS },
86 #else
87 	{ "eof",	MTWEOF, 0 },
88 #endif
89 	{ "fsf",	MTFSF,	1 },
90 	{ "fsr",	MTFSR,	1 },
91 	{ "offline",	MTOFFL,	1 },
92 	{ "rewind",	MTREW,	1 },
93 	{ "rewoffl",	MTOFFL,	1 },
94 	{ "status",	MTNOP,	1 },
95 #if defined(__DragonFly__)
96 	{ "weof",	MTWEOF,	0, ZERO_ALLOWED },
97 #else
98 	{ "weof",	MTWEOF,	0 },
99 #endif
100 #if defined(__DragonFly__)
101 	{ "erase",	MTERASE, 0, ZERO_ALLOWED},
102 	{ "blocksize",	MTSETBSIZ, 0, NEED_2ARGS|ZERO_ALLOWED },
103 	{ "density",	MTSETDNSTY, 0, NEED_2ARGS|ZERO_ALLOWED|IS_DENSITY },
104 	{ "eom",	MTEOD, 1 },
105 	{ "eod",	MTEOD, 1 },
106 	{ "smk",	MTWSS, 0 },
107 	{ "wss",	MTWSS, 0 },
108 	{ "fss",	MTFSS, 1 },
109 	{ "bss",	MTBSS, 1 },
110 	{ "comp",	MTCOMP, 0, NEED_2ARGS|ZERO_ALLOWED|IS_COMP },
111 	{ "retension",	MTRETENS, 1 },
112 	{ "rdhpos",     MTIOCRDHPOS,  0 },
113 	{ "rdspos",     MTIOCRDSPOS,  0 },
114 	{ "sethpos",    MTIOCHLOCATE, 0, NEED_2ARGS|ZERO_ALLOWED },
115 	{ "setspos",    MTIOCSLOCATE, 0, NEED_2ARGS|ZERO_ALLOWED },
116 	{ "errstat",	MTIOCERRSTAT, 0 },
117 	{ "setmodel",	MTIOCSETEOTMODEL, 0, NEED_2ARGS|ZERO_ALLOWED },
118 	{ "seteotmodel",	MTIOCSETEOTMODEL, 0, NEED_2ARGS|ZERO_ALLOWED },
119 	{ "getmodel",	MTIOCGETEOTMODEL },
120 	{ "geteotmodel",	MTIOCGETEOTMODEL },
121 #endif /* defined(__DragonFly__) */
122 	{ NULL }
123 };
124 
125 void printreg(char *, u_int, char *);
126 void status(struct mtget *);
127 void usage(void);
128 #if defined (__DragonFly__)
129 void st_status (struct mtget *);
130 int stringtodens (const char *s);
131 const char *denstostring (int d);
132 int denstobp(int d, int bpi);
133 u_int32_t stringtocomp(const char *s);
134 const char * comptostring(u_int32_t comp);
135 void warn_eof(void);
136 #endif /* defined (__DragonFly__) */
137 
138 int
139 main(int argc, char **argv)
140 {
141 	register struct commands *comp;
142 	struct mtget mt_status;
143 	struct mtop mt_com;
144 	int ch, len, mtfd;
145 	char *p, *tape;
146 
147 	if ((tape = getenv("TAPE")) == NULL)
148 		tape = DEFTAPE;
149 
150 	while ((ch = getopt(argc, argv, "f:t:")) != -1)
151 		switch(ch) {
152 		case 'f':
153 		case 't':
154 			tape = optarg;
155 			break;
156 		case '?':
157 		default:
158 			usage();
159 		}
160 	argc -= optind;
161 	argv += optind;
162 
163 	if (argc < 1 || argc > 2)
164 		usage();
165 
166 	len = strlen(p = *argv++);
167 	for (comp = com;; comp++) {
168 		if (comp->c_name == NULL)
169 			errx(1, "%s: unknown command", p);
170 		if (strncmp(p, comp->c_name, len) == 0)
171 			break;
172 	}
173 #if defined(__DragonFly__)
174 	if((comp->c_flags & NEED_2ARGS) && argc != 2)
175 		usage();
176 	if(comp->c_flags & DISABLE_THIS) {
177 		warn_eof();
178 	}
179 #endif /* defined(__DragonFly__) */
180 	if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0)
181 		err(1, "%s", tape);
182 	if (comp->c_code != MTNOP) {
183 		mt_com.mt_op = comp->c_code;
184 		if (*argv) {
185 #if defined (__DragonFly__)
186 			if (!isdigit(**argv) &&
187 			    (comp->c_flags & IS_DENSITY)) {
188 				const char *dcanon;
189 				mt_com.mt_count = stringtodens(*argv);
190 				if (mt_com.mt_count == 0)
191 					errx(1, "%s: unknown density", *argv);
192 				dcanon = denstostring(mt_com.mt_count);
193 				if (strcmp(dcanon, *argv) != 0)
194 					printf(
195 					"Using \"%s\" as an alias for %s\n",
196 					       *argv, dcanon);
197 				p = "";
198 			} else if (!isdigit(**argv) &&
199 				   (comp->c_flags & IS_COMP)) {
200 
201 				mt_com.mt_count = stringtocomp(*argv);
202 				if ((u_int32_t)mt_com.mt_count == 0xf0f0f0f0)
203 					errx(1, "%s: unknown compression",
204 					     *argv);
205 				p = "";
206 			} else
207 				/* allow for hex numbers; useful for density */
208 				mt_com.mt_count = strtol(*argv, &p, 0);
209 #else
210 			mt_com.mt_count = strtol(*argv, &p, 10);
211 #endif /* defined(__DragonFly__) */
212 			if ((mt_com.mt_count <=
213 #if defined (__DragonFly__)
214 			    ((comp->c_flags & ZERO_ALLOWED)? -1: 0)
215 			    && ((comp->c_flags & IS_COMP) == 0)
216 #else
217 			    0
218 #endif /* defined (__DragonFly__) */
219 			    ) || *p)
220 				errx(1, "%s: illegal count", *argv);
221 		}
222 		else
223 			mt_com.mt_count = 1;
224 #if	defined(__DragonFly__)
225 		switch (comp->c_code) {
226 		case MTIOCERRSTAT:
227 		{
228 			int i;
229 			union mterrstat umn;
230 			struct scsi_tape_errors *s = &umn.scsi_errstat;
231 
232 			if (ioctl(mtfd, comp->c_code, (caddr_t)&umn) < 0)
233 				err(2, "%s", tape);
234 			(void)printf("Last I/O Residual: %u\n", s->io_resid);
235 			(void)printf(" Last I/O Command:");
236 			for (i = 0; i < sizeof (s->io_cdb); i++)
237 				(void)printf(" %02X", s->io_cdb[i]);
238 			(void)printf("\n");
239 			(void)printf("   Last I/O Sense:\n\n\t");
240 			for (i = 0; i < sizeof (s->io_sense); i++) {
241 				(void)printf(" %02X", s->io_sense[i]);
242 				if (((i + 1) & 0xf) == 0) {
243 					(void)printf("\n\t");
244 				}
245 			}
246 			(void)printf("\n");
247 			(void)printf("Last Control Residual: %u\n",
248 			    s->ctl_resid);
249 			(void)printf(" Last Control Command:");
250 			for (i = 0; i < sizeof (s->ctl_cdb); i++)
251 				(void)printf(" %02X", s->ctl_cdb[i]);
252 			(void)printf("\n");
253 			(void)printf("   Last Control Sense:\n\n\t");
254 			for (i = 0; i < sizeof (s->ctl_sense); i++) {
255 				(void)printf(" %02X", s->ctl_sense[i]);
256 				if (((i + 1) & 0xf) == 0) {
257 					(void)printf("\n\t");
258 				}
259 			}
260 			(void)printf("\n\n");
261 			exit(0);
262 			/* NOTREACHED */
263 		}
264 		case MTIOCRDHPOS:
265 		case MTIOCRDSPOS:
266 		{
267 			u_int32_t block;
268 			if (ioctl(mtfd, comp->c_code, (caddr_t)&block) < 0)
269 				err(2, "%s", tape);
270 			(void)printf("%s: %s block location %u\n", tape,
271 			    (comp->c_code == MTIOCRDHPOS)? "hardware" :
272 			    "logical", block);
273 			exit(0);
274 			/* NOTREACHED */
275 		}
276 		case MTIOCSLOCATE:
277 		case MTIOCHLOCATE:
278 		{
279 			u_int32_t block = (u_int32_t)mt_com.mt_count;
280 			if (ioctl(mtfd, comp->c_code, (caddr_t)&block) < 0)
281 				err(2, "%s", tape);
282 			exit(0);
283 			/* NOTREACHED */
284 		}
285 		case MTIOCGETEOTMODEL:
286 		{
287 			u_int32_t om;
288 			if (ioctl(mtfd, MTIOCGETEOTMODEL, (caddr_t)&om) < 0)
289 				err(2, "%s", tape);
290 			(void)printf("%s: the model is %u filemar%s at EOT\n",
291 			    tape, om, (om > 1)? "ks" : "k");
292 			exit(0);
293 			/* NOTREACHED */
294 		}
295 		case MTIOCSETEOTMODEL:
296 		{
297 			u_int32_t om, nm = (u_int32_t)mt_com.mt_count;
298 			if (ioctl(mtfd, MTIOCGETEOTMODEL, (caddr_t)&om) < 0)
299 				err(2, "%s", tape);
300 			if (ioctl(mtfd, comp->c_code, (caddr_t)&nm) < 0)
301 				err(2, "%s", tape);
302 			(void)printf("%s: old model was %u filemar%s at EOT\n",
303 			    tape, om, (om > 1)? "ks" : "k");
304 			(void)printf("%s: new model  is %u filemar%s at EOT\n",
305 			    tape, nm, (nm > 1)? "ks" : "k");
306 			exit(0);
307 			/* NOTREACHED */
308 		}
309 		default:
310 			break;
311 		}
312 #endif
313 		if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0)
314 			err(1, "%s: %s", tape, comp->c_name);
315 	} else {
316 		if (ioctl(mtfd, MTIOCGET, &mt_status) < 0)
317 			err(1, NULL);
318 		status(&mt_status);
319 	}
320 	exit(0);
321 	/* NOTREACHED */
322 }
323 
324 #ifdef vax
325 #include <vax/mba/mtreg.h>
326 #include <vax/mba/htreg.h>
327 
328 #include <vax/uba/utreg.h>
329 #include <vax/uba/tmreg.h>
330 #undef b_repcnt		/* argh */
331 #include <vax/uba/tsreg.h>
332 #endif
333 
334 #ifdef sun
335 #include <sundev/tmreg.h>
336 #include <sundev/arreg.h>
337 #endif
338 
339 #ifdef tahoe
340 #include <tahoe/vba/cyreg.h>
341 #endif
342 
343 #if defined(__DragonFly__) && defined(__i386__)
344 #include <machine/wtio.h>
345 #endif
346 
347 struct tape_desc {
348 	short	t_type;		/* type of magtape device */
349 	char	*t_name;	/* printing name */
350 	char	*t_dsbits;	/* "drive status" register */
351 	char	*t_erbits;	/* "error" register */
352 } tapes[] = {
353 #ifdef vax
354 	{ MT_ISTS,	"ts11",		0,		TSXS0_BITS },
355 	{ MT_ISHT,	"tm03",		HTDS_BITS,	HTER_BITS },
356 	{ MT_ISTM,	"tm11",		0,		TMER_BITS },
357 	{ MT_ISMT,	"tu78",		MTDS_BITS,	0 },
358 	{ MT_ISUT,	"tu45",		UTDS_BITS,	UTER_BITS },
359 #endif
360 #ifdef sun
361 	{ MT_ISCPC,	"TapeMaster",	TMS_BITS,	0 },
362 	{ MT_ISAR,	"Archive",	ARCH_CTRL_BITS,	ARCH_BITS },
363 #endif
364 #ifdef tahoe
365 	{ MT_ISCY,	"cipher",	CYS_BITS,	CYCW_BITS },
366 #endif
367 #if defined (__DragonFly__)
368 	/*
369 	 * XXX This is weird.  The st driver reports the tape drive
370 	 * as 0x7 (MT_ISAR - Sun/Archive compatible); the wt driver
371 	 * either reports MT_ISVIPER1 for an Archive tape, or 0x11
372 	 * (MT_ISMFOUR) for other tapes.
373 	 * XXX for the wt driver, rely on it behaving like a "standard"
374 	 * magtape driver.
375 	 */
376 	{ MT_ISAR,	"SCSI tape drive", 0,		0 },
377 #if defined (__i386__)
378 	{ MT_ISVIPER1,	"Archive Viper", WTDS_BITS, WTER_BITS },
379 	{ MT_ISMFOUR,	"Wangtek",	 WTDS_BITS, WTER_BITS },
380 #endif
381 #endif /* defined (__DragonFly__) */
382 	{ 0 }
383 };
384 
385 /*
386  * Interpret the status buffer returned
387  */
388 void
389 status(register struct mtget *bp)
390 {
391 	register struct tape_desc *mt;
392 
393 	for (mt = tapes;; mt++) {
394 		if (mt->t_type == 0) {
395 			(void)printf("%d: unknown tape drive type\n",
396 			    bp->mt_type);
397 			return;
398 		}
399 		if (mt->t_type == bp->mt_type)
400 			break;
401 	}
402 #if defined (__DragonFly__)
403 	if(mt->t_type == MT_ISAR)
404 		st_status(bp);
405 	else {
406 #endif /* defined (__DragonFly__) */
407 	(void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid);
408 	printreg("ds", (unsigned short)bp->mt_dsreg, mt->t_dsbits);
409 	printreg("\ner", (unsigned short)bp->mt_erreg, mt->t_erbits);
410 	(void)putchar('\n');
411 #if defined (__DragonFly__)
412 	}
413 #endif /* defined (__DragonFly__) */
414 }
415 
416 /*
417  * Print a register a la the %b format of the kernel's printf.
418  */
419 void
420 printreg(char *s, register u_int v, register char *bits)
421 {
422 	register int i, any = 0;
423 	register char c;
424 
425 	if (bits && *bits == 8)
426 		printf("%s=%o", s, v);
427 	else
428 		printf("%s=%x", s, v);
429 	if (!bits)
430 		return;
431 	bits++;
432 	if (v && bits) {
433 		putchar('<');
434 		while ((i = *bits++)) {
435 			if (v & (1 << (i-1))) {
436 				if (any)
437 					putchar(',');
438 				any = 1;
439 				for (; (c = *bits) > 32; bits++)
440 					putchar(c);
441 			} else
442 				for (; *bits > 32; bits++)
443 					;
444 		}
445 		putchar('>');
446 	}
447 }
448 
449 void
450 usage(void)
451 {
452 	(void)fprintf(stderr, "usage: mt [-f device] command [ count ]\n");
453 	exit(1);
454 }
455 
456 #if defined (__DragonFly__)
457 
458 struct densities {
459 	int dens;
460 	int bpmm;
461 	int bpi;
462 	const char *name;
463 } dens[] = {
464 	/*
465 	 * Taken from T10 Project 997D
466 	 * SCSI-3 Stream Device Commands (SSC)
467 	 * Revision 11, 4-Nov-97
468 	 */
469 	/*Num.  bpmm    bpi     Reference     */
470 	{ 0x1,	32,	800,	"X3.22-1983" },
471 	{ 0x2,	63,	1600,	"X3.39-1986" },
472 	{ 0x3,	246,	6250,	"X3.54-1986" },
473 	{ 0x5,	315,	8000,	"X3.136-1986" },
474 	{ 0x6,	126,	3200,	"X3.157-1987" },
475 	{ 0x7,	252,	6400,	"X3.116-1986" },
476 	{ 0x8,	315,	8000,	"X3.158-1987" },
477 	{ 0x9,	491,	37871,	"X3.180" },
478 	{ 0xA,	262,	6667,	"X3B5/86-199" },
479 	{ 0xB,	63,	1600,	"X3.56-1986" },
480 	{ 0xC,	500,	12690,	"HI-TC1" },
481 	{ 0xD,	999,	25380,	"HI-TC2" },
482 	{ 0xF,	394,	10000,	"QIC-120" },
483 	{ 0x10,	394,	10000,	"QIC-150" },
484 	{ 0x11,	630,	16000,	"QIC-320" },
485 	{ 0x12,	2034,	51667,	"QIC-1350" },
486 	{ 0x13,	2400,	61000,	"X3B5/88-185A" },
487 	{ 0x14,	1703,	43245,	"X3.202-1991" },
488 	{ 0x15,	1789,	45434,	"ECMA TC17" },
489 	{ 0x16,	394,	10000,	"X3.193-1990" },
490 	{ 0x17,	1673,	42500,	"X3B5/91-174" },
491 	{ 0x18,	1673,	42500,	"X3B5/92-50" },
492 	{ 0x19, 2460,   62500,  "DLTapeIII" },
493 	{ 0x1A, 3214,   81633,  "DLTapeIV(20GB)" },
494 	{ 0x1B, 3383,   85937,  "DLTapeIV(35GB)" },
495 	{ 0x1C, 1654,	42000,	"QIC-385M" },
496 	{ 0x1D,	1512,	38400,	"QIC-410M" },
497 	{ 0x1E, 1385,	36000,	"QIC-1000C" },
498 	{ 0x1F,	2666,	67733,	"QIC-2100C" },
499 	{ 0x20, 2666,	67733,	"QIC-6GB(M)" },
500 	{ 0x21,	2666,	67733,	"QIC-20GB(C)" },
501 	{ 0x22,	1600,	40640,	"QIC-2GB(C)" },
502 	{ 0x23, 2666,	67733,	"QIC-875M" },
503 	{ 0x24,	2400,	61000,	"DDS-2" },
504 	{ 0x25,	3816,	97000,	"DDS-3" },
505 	{ 0x26,	3816,	97000,	"DDS-4" },
506 	{ 0x27,	3056,	77611,	"Mammoth" },
507 	{ 0x28,	1491,	37871,	"X3.224" },
508 	{ 0x41, 3868,   98250,  "DLTapeIV(40GB)" },
509 	{ 0x48, 5236,   133000, "SDLTapeI(110)" },
510 	{ 0x49, 7598,   193000, "SDLTapeI(160)" },
511 	{ 0, 0, 0, NULL }
512 };
513 
514 struct compression_types {
515 	u_int32_t	comp_number;
516 	const char 	*name;
517 } comp_types[] = {
518 	{ 0x00, "none" },
519 	{ 0x00, "off" },
520 	{ 0x10, "IDRC" },
521 	{ 0x20, "DCLZ" },
522 	{ 0xffffffff, "enable" },
523 	{ 0xffffffff, "on" },
524 	{ 0xf0f0f0f0, NULL}
525 };
526 
527 const char *
528 denstostring(int d)
529 {
530 	static char buf[20];
531 	struct densities *sd;
532 
533 	/* densities 0 and 0x7f are handled as special cases */
534 	if (d == 0)
535 		return "default";
536 	if (d == 0x7f)
537 		return "same";
538 	for (sd = dens; sd->dens; sd++)
539 		if (sd->dens == d)
540 			break;
541 	if (sd->dens == 0)
542 		sprintf(buf, "0x%02x", d);
543 	else
544 		sprintf(buf, "0x%02x:%s", d, sd->name);
545 	return buf;
546 }
547 
548 /*
549  * Given a specific density number, return either the bits per inch or bits
550  * per millimeter for the given density.
551  */
552 int
553 denstobp(int d, int bpi)
554 {
555 	struct densities *sd;
556 
557 	for (sd = dens; sd->dens; sd++)
558 		if (sd->dens == d)
559 			break;
560 	if (sd->dens == 0)
561 		return(0);
562 	else {
563 		if (bpi)
564 			return(sd->bpi);
565 		else
566 			return(sd->bpmm);
567 	}
568 }
569 
570 int
571 stringtodens(const char *s)
572 {
573 	struct densities *sd;
574 	size_t l = strlen(s);
575 
576 	for (sd = dens; sd->dens; sd++)
577 		if (strncasecmp(sd->name, s, l) == 0)
578 			break;
579 	return sd->dens;
580 }
581 
582 
583 const char *
584 getblksiz(int bs)
585 {
586 	static char buf[25];
587 	if (bs == 0)
588 		return "variable";
589 	else {
590 		sprintf(buf, "%d bytes", bs);
591 		return buf;
592 	}
593 }
594 
595 const char *
596 comptostring(u_int32_t comp)
597 {
598 	static char buf[20];
599 	struct compression_types *ct;
600 
601 	if (comp == MT_COMP_DISABLED)
602 		return "disabled";
603 	else if (comp == MT_COMP_UNSUPP)
604 		return "unsupported";
605 
606 	for (ct = comp_types; ct->name; ct++)
607 		if (ct->comp_number == comp)
608 			break;
609 
610 	if (ct->comp_number == 0xf0f0f0f0) {
611 		sprintf(buf, "0x%x", comp);
612 		return(buf);
613 	} else
614 		return(ct->name);
615 }
616 
617 u_int32_t
618 stringtocomp(const char *s)
619 {
620 	struct compression_types *ct;
621 	size_t l = strlen(s);
622 
623 	for (ct = comp_types; ct->name; ct++)
624 		if (strncasecmp(ct->name, s, l) == 0)
625 			break;
626 
627 	return(ct->comp_number);
628 }
629 
630 void
631 st_status(struct mtget *bp)
632 {
633 	printf("Mode      Density              Blocksize      bpi      "
634 	       "Compression\n"
635 	       "Current:  %-17s    %-12s   %-7d  %s\n"
636 	       "---------available modes---------\n"
637 	       "0:        %-17s    %-12s   %-7d  %s\n"
638 	       "1:        %-17s    %-12s   %-7d  %s\n"
639 	       "2:        %-17s    %-12s   %-7d  %s\n"
640 	       "3:        %-17s    %-12s   %-7d  %s\n",
641 	       denstostring(bp->mt_density), getblksiz(bp->mt_blksiz),
642 	       denstobp(bp->mt_density, TRUE), comptostring(bp->mt_comp),
643 	       denstostring(bp->mt_density0), getblksiz(bp->mt_blksiz0),
644 	       denstobp(bp->mt_density0, TRUE), comptostring(bp->mt_comp0),
645 	       denstostring(bp->mt_density1), getblksiz(bp->mt_blksiz1),
646 	       denstobp(bp->mt_density1, TRUE), comptostring(bp->mt_comp1),
647 	       denstostring(bp->mt_density2), getblksiz(bp->mt_blksiz2),
648 	       denstobp(bp->mt_density2, TRUE), comptostring(bp->mt_comp2),
649 	       denstostring(bp->mt_density3), getblksiz(bp->mt_blksiz3),
650 	       denstobp(bp->mt_density3, TRUE), comptostring(bp->mt_comp3));
651 
652 	if (bp->mt_dsreg != MTIO_DSREG_NIL) {
653 		auto char foo[32];
654 		const char *sfmt = "Current Driver State: %s.\n";
655 		printf("---------------------------------\n");
656 		switch (bp->mt_dsreg) {
657 		case MTIO_DSREG_REST:
658 			printf(sfmt, "at rest");
659 			break;
660 		case MTIO_DSREG_RBSY:
661 			printf(sfmt, "Communicating with drive");
662 			break;
663 		case MTIO_DSREG_WR:
664 			printf(sfmt, "Writing");
665 			break;
666 		case MTIO_DSREG_FMK:
667 			printf(sfmt, "Writing Filemarks");
668 			break;
669 		case MTIO_DSREG_ZER:
670 			printf(sfmt, "Erasing");
671 			break;
672 		case MTIO_DSREG_RD:
673 			printf(sfmt, "Reading");
674 			break;
675 		case MTIO_DSREG_FWD:
676 			printf(sfmt, "Spacing Forward");
677 			break;
678 		case MTIO_DSREG_REV:
679 			printf(sfmt, "Spacing Reverse");
680 			break;
681 		case MTIO_DSREG_POS:
682 			printf(sfmt,
683 			    "Hardware Positioning (direction unknown)");
684 			break;
685 		case MTIO_DSREG_REW:
686 			printf(sfmt, "Rewinding");
687 			break;
688 		case MTIO_DSREG_TEN:
689 			printf(sfmt, "Retensioning");
690 			break;
691 		case MTIO_DSREG_UNL:
692 			printf(sfmt, "Unloading");
693 			break;
694 		case MTIO_DSREG_LD:
695 			printf(sfmt, "Loading");
696 			break;
697 		default:
698 			(void) sprintf(foo, "Unknown state 0x%x", bp->mt_dsreg);
699 			printf(sfmt, foo);
700 			break;
701 		}
702 	}
703 	if (bp->mt_resid == 0 && bp->mt_fileno == (daddr_t) -1 &&
704 	    bp->mt_blkno == (daddr_t) -1)
705 		return;
706 	printf("---------------------------------\n");
707 	printf("File Number: %ld\tRecord Number: %ld\tResidual Count %d\n",
708 	    bp->mt_fileno, bp->mt_blkno, bp->mt_resid);
709 }
710 
711 void
712 warn_eof(void)
713 {
714 	fprintf(stderr,
715 		"The \"eof\" command has been disabled.\n"
716 		"Use \"weof\" if you really want to write end-of-file marks,\n"
717 		"or \"eom\" if you rather want to skip to the end of "
718 		"recorded medium.\n");
719 	exit(1);
720 }
721 
722 #endif /* defined (__DragonFly__) */
723