mt.c revision 7913 
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 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
41static char sccsid[] = "@(#)mt.c	8.1 (Berkeley) 6/6/93";
42#endif /* not lint */
43
44/*
45 * mt --
46 *   magnetic tape manipulation program
47 */
48#include <sys/types.h>
49#include <sys/ioctl.h>
50#include <sys/mtio.h>
51#include <fcntl.h>
52#include <errno.h>
53#include <stdlib.h>
54#include <stdio.h>
55#include <ctype.h>
56#include <string.h>
57
58/* the appropriate sections of <sys/mtio.h> are also #ifdef'd for FreeBSD */
59#if defined(__FreeBSD__)
60/* c_flags */
61#define NEED_2ARGS	0x01
62#define ZERO_ALLOWED	0X02
63#endif /* defined(__FreeBSD__) */
64
65struct commands {
66	char *c_name;
67	int c_code;
68	int c_ronly;
69#if defined(__FreeBSD__)
70	int c_flags;
71#endif /* defined(__FreeBSD__) */
72} com[] = {
73	{ "bsf",	MTBSF,	1 },
74	{ "bsr",	MTBSR,	1 },
75	{ "eof",	MTWEOF,	0 },
76	{ "fsf",	MTFSF,	1 },
77	{ "fsr",	MTFSR,	1 },
78	{ "offline",	MTOFFL,	1 },
79	{ "rewind",	MTREW,	1 },
80	{ "rewoffl",	MTOFFL,	1 },
81	{ "status",	MTNOP,	1 },
82	{ "weof",	MTWEOF,	0 },
83#if defined(__FreeBSD__)
84	{ "erase",	MTERASE, 0 },
85	{ "blocksize",	MTSETBSIZ, 0, NEED_2ARGS|ZERO_ALLOWED },
86	{ "density",	MTSETDNSTY, 0, NEED_2ARGS|ZERO_ALLOWED },
87	{ "eom",	MTEOD, 1 },
88	{ "comp",	MTCOMP, 0, NEED_2ARGS|ZERO_ALLOWED },
89#endif /* defined(__FreeBSD__) */
90	{ NULL }
91};
92
93void err __P((const char *, ...));
94void printreg __P((char *, u_int, char *));
95void status __P((struct mtget *));
96void usage __P((void));
97#if defined (__FreeBSD__)
98void st_status (struct mtget *);
99#endif /* defined (__FreeBSD__) */
100
101int
102main(argc, argv)
103	int argc;
104	char *argv[];
105{
106	register struct commands *comp;
107	struct mtget mt_status;
108	struct mtop mt_com;
109	int ch, len, mtfd;
110	char *p, *tape;
111
112	if ((tape = getenv("TAPE")) == NULL)
113		tape = DEFTAPE;
114
115	while ((ch = getopt(argc, argv, "f:t:")) != EOF)
116		switch(ch) {
117		case 'f':
118		case 't':
119			tape = optarg;
120			break;
121		case '?':
122		default:
123			usage();
124		}
125	argc -= optind;
126	argv += optind;
127
128	if (argc < 1 || argc > 2)
129		usage();
130
131	len = strlen(p = *argv++);
132	for (comp = com;; comp++) {
133		if (comp->c_name == NULL)
134			err("%s: unknown command", p);
135		if (strncmp(p, comp->c_name, len) == 0)
136			break;
137	}
138#if defined(__FreeBSD__)
139	if((comp->c_flags & NEED_2ARGS) && argc != 2)
140		usage();
141#endif /* defined(__FreeBSD__) */
142	if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0)
143		err("%s: %s", tape, strerror(errno));
144	if (comp->c_code != MTNOP) {
145		mt_com.mt_op = comp->c_code;
146		if (*argv) {
147#if defined (__FreeBSD__)
148			/* allow for hex numbers; useful for density */
149			mt_com.mt_count = strtol(*argv, &p, 0);
150#else
151			mt_com.mt_count = strtol(*argv, &p, 10);
152#endif /* defined(__FreeBSD__) */
153			if (mt_com.mt_count <=
154#if defined (__FreeBSD__)
155			    ((comp->c_flags & ZERO_ALLOWED)? -1: 0)
156#else
157			    0
158#endif /* defined (__FreeBSD__) */
159			    || *p)
160				err("%s: illegal count", *argv);
161		}
162		else
163			mt_com.mt_count = 1;
164		if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0)
165			err("%s: %s: %s", tape, comp->c_name, strerror(errno));
166	} else {
167		if (ioctl(mtfd, MTIOCGET, &mt_status) < 0)
168			err("%s", strerror(errno));
169		status(&mt_status);
170	}
171	exit (0);
172	/* NOTREACHED */
173}
174
175#ifdef vax
176#include <vax/mba/mtreg.h>
177#include <vax/mba/htreg.h>
178
179#include <vax/uba/utreg.h>
180#include <vax/uba/tmreg.h>
181#undef b_repcnt		/* argh */
182#include <vax/uba/tsreg.h>
183#endif
184
185#ifdef sun
186#include <sundev/tmreg.h>
187#include <sundev/arreg.h>
188#endif
189
190#ifdef tahoe
191#include <tahoe/vba/cyreg.h>
192#endif
193
194struct tape_desc {
195	short	t_type;		/* type of magtape device */
196	char	*t_name;	/* printing name */
197	char	*t_dsbits;	/* "drive status" register */
198	char	*t_erbits;	/* "error" register */
199} tapes[] = {
200#ifdef vax
201	{ MT_ISTS,	"ts11",		0,		TSXS0_BITS },
202	{ MT_ISHT,	"tm03",		HTDS_BITS,	HTER_BITS },
203	{ MT_ISTM,	"tm11",		0,		TMER_BITS },
204	{ MT_ISMT,	"tu78",		MTDS_BITS,	0 },
205	{ MT_ISUT,	"tu45",		UTDS_BITS,	UTER_BITS },
206#endif
207#ifdef sun
208	{ MT_ISCPC,	"TapeMaster",	TMS_BITS,	0 },
209	{ MT_ISAR,	"Archive",	ARCH_CTRL_BITS,	ARCH_BITS },
210#endif
211#ifdef tahoe
212	{ MT_ISCY,	"cipher",	CYS_BITS,	CYCW_BITS },
213#endif
214#if defined (__FreeBSD__)
215	/*
216	 * XXX This is terrific.  The st driver reports the tape drive
217	 * as 0x7 (MT_ISAR - Sun/Archive compatible); the wt driver
218	 * either reports MT_ISVIPER1 for an Archive tape, or 0x11
219	 * (MT_ISMFOUR) for other tapes.
220	 * XXX for the wt driver, rely on it behaving like a "standard"
221	 * magtape driver.
222	 */
223	{ MT_ISAR,	"SCSI tape drive", 0,		0 },
224	{ MT_ISVIPER1,	"Archive Viper", 0,		0 },
225	{ MT_ISMFOUR,	"Wangtek",	0,		0 },
226#endif /* defined (__FreeBSD__) */
227	{ 0 }
228};
229
230/*
231 * Interpret the status buffer returned
232 */
233void
234status(bp)
235	register struct mtget *bp;
236{
237	register struct tape_desc *mt;
238
239	for (mt = tapes;; mt++) {
240		if (mt->t_type == 0) {
241			(void)printf("%d: unknown tape drive type\n",
242			    bp->mt_type);
243			return;
244		}
245		if (mt->t_type == bp->mt_type)
246			break;
247	}
248#if defined (__FreeBSD__)
249	if(mt->t_type == MT_ISAR)
250		st_status(bp);
251	else {
252#endif /* defined (__FreeBSD__) */
253	(void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid);
254	printreg("ds", bp->mt_dsreg, mt->t_dsbits);
255	printreg("\ner", bp->mt_erreg, mt->t_erbits);
256	(void)putchar('\n');
257#if defined (__FreeBSD__)
258	}
259#endif /* defined (__FreeBSD__) */
260}
261
262/*
263 * Print a register a la the %b format of the kernel's printf.
264 */
265void
266printreg(s, v, bits)
267	char *s;
268	register u_int v;
269	register char *bits;
270{
271	register int i, any = 0;
272	register char c;
273
274	if (bits && *bits == 8)
275		printf("%s=%o", s, v);
276	else
277		printf("%s=%x", s, v);
278	bits++;
279	if (v && bits) {
280		putchar('<');
281		while (i = *bits++) {
282			if (v & (1 << (i-1))) {
283				if (any)
284					putchar(',');
285				any = 1;
286				for (; (c = *bits) > 32; bits++)
287					putchar(c);
288			} else
289				for (; *bits > 32; bits++)
290					;
291		}
292		putchar('>');
293	}
294}
295
296void
297usage()
298{
299	(void)fprintf(stderr, "usage: mt [-f device] command [ count ]\n");
300	exit(1);
301}
302
303#if __STDC__
304#include <stdarg.h>
305#else
306#include <varargs.h>
307#endif
308
309void
310#if __STDC__
311err(const char *fmt, ...)
312#else
313err(fmt, va_alist)
314	char *fmt;
315        va_dcl
316#endif
317{
318	va_list ap;
319#if __STDC__
320	va_start(ap, fmt);
321#else
322	va_start(ap);
323#endif
324	(void)fprintf(stderr, "mt: ");
325	(void)vfprintf(stderr, fmt, ap);
326	va_end(ap);
327	(void)fprintf(stderr, "\n");
328	exit(1);
329	/* NOTREACHED */
330}
331
332#if defined (__FreeBSD__)
333
334struct densities {
335	int dens;
336	const char *name;
337} dens [] = {
338	{ 0x1,  "X3.22-1983  " },
339	{ 0x2,  "X3.39-1986  " },
340	{ 0x3,  "X3.54-1986  " },
341	{ 0x5,  "X3.136-1986 " },
342	{ 0x6,  "X3.157-1987 " },
343	{ 0x7,  "X3.116-1986 " },
344	{ 0x8,  "X3.158-1986 " },
345	{ 0x9,  "X3B5/87-099 " },
346	{ 0xA,  "X3B5/86-199 " },
347	{ 0xB,  "X3.56-1986  " },
348	{ 0xC,  "HI-TC1      " },
349	{ 0xD,  "HI-TC2      " },
350	{ 0xF,  "QIC-120     " },
351	{ 0x10, "QIC-150     " },
352	{ 0x11, "QIC-320     " },
353	{ 0x12, "QIC-1350    " },
354	{ 0x13, "X3B5/88-185A" },
355	{ 0x14, "X3.202-1991 " },
356	{ 0x15, "ECMA TC17   " },
357	{ 0x16, "X3.193-1990 " },
358	{ 0x17, "X3B5/91-174 " },
359	{ 0, 0 }
360};
361
362const char *
363getdens(int d)
364{
365	static char buf[20];
366	struct densities *sd;
367
368	for (sd = dens; sd->dens; sd++)
369		if (sd->dens == d)
370			break;
371	if (sd->dens == 0) {
372		sprintf(buf, "0x%02x        ", d);
373		return buf;
374	}
375	else
376		return sd->name;
377}
378
379const char *
380getblksiz(int bs)
381{
382	static char buf[25];
383	if (bs == 0)
384		return "variable";
385	else {
386		sprintf(buf, "= %d bytes", bs);
387		return buf;
388	}
389}
390
391
392void
393st_status(struct mtget *bp)
394{
395	printf("Present Mode:   Density = %s Blocksize %s\n",
396	       getdens(bp->mt_density), getblksiz(bp->mt_blksiz));
397	printf("---------available modes---------\n");
398	printf("Mode 0:         Density = %s Blocksize %s\n",
399	       getdens(bp->mt_density0), getblksiz(bp->mt_blksiz0));
400	printf("Mode 1:         Density = %s Blocksize %s\n",
401	       getdens(bp->mt_density1), getblksiz(bp->mt_blksiz1));
402	printf("Mode 2:         Density = %s Blocksize %s\n",
403	       getdens(bp->mt_density2), getblksiz(bp->mt_blksiz2));
404	printf("Mode 3:         Density = %s Blocksize %s\n",
405	       getdens(bp->mt_density3), getblksiz(bp->mt_blksiz3));
406}
407
408#endif /* defined (__FreeBSD__) */
409