mt.c revision 1.1.1.1 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
35 static 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 static 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 struct commands {
59 char *c_name;
60 int c_code;
61 int c_ronly;
62 } com[] = {
63 { "bsf", MTBSF, 1 },
64 { "bsr", MTBSR, 1 },
65 { "eof", MTWEOF, 0 },
66 { "fsf", MTFSF, 1 },
67 { "fsr", MTFSR, 1 },
68 { "offline", MTOFFL, 1 },
69 { "rewind", MTREW, 1 },
70 { "rewoffl", MTOFFL, 1 },
71 { "status", MTNOP, 1 },
72 { "weof", MTWEOF, 0 },
73 { NULL }
74 };
75
76 void err __P((const char *, ...));
77 void printreg __P((char *, u_int, char *));
78 void status __P((struct mtget *));
79 void usage __P((void));
80
81 int
82 main(argc, argv)
83 int argc;
84 char *argv[];
85 {
86 register struct commands *comp;
87 struct mtget mt_status;
88 struct mtop mt_com;
89 int ch, len, mtfd;
90 char *p, *tape;
91
92 if ((tape = getenv("TAPE")) == NULL)
93 tape = DEFTAPE;
94
95 while ((ch = getopt(argc, argv, "f:t:")) != EOF)
96 switch(ch) {
97 case 'f':
98 case 't':
99 tape = optarg;
100 break;
101 case '?':
102 default:
103 usage();
104 }
105 argc -= optind;
106 argv += optind;
107
108 if (argc < 1 || argc > 2)
109 usage();
110
111 len = strlen(p = *argv++);
112 for (comp = com;; comp++) {
113 if (comp->c_name == NULL)
114 err("%s: unknown command", p);
115 if (strncmp(p, comp->c_name, len) == 0)
116 break;
117 }
118 if ((mtfd = open(tape, comp->c_ronly ? O_RDONLY : O_RDWR)) < 0)
119 err("%s: %s", tape, strerror(errno));
120 if (comp->c_code != MTNOP) {
121 mt_com.mt_op = comp->c_code;
122 if (*argv) {
123 mt_com.mt_count = strtol(*argv, &p, 10);
124 if (mt_com.mt_count <= 0 || *p)
125 err("%s: illegal count", *argv);
126 }
127 else
128 mt_com.mt_count = 1;
129 if (ioctl(mtfd, MTIOCTOP, &mt_com) < 0)
130 err("%s: %s: %s", tape, comp->c_name, strerror(errno));
131 } else {
132 if (ioctl(mtfd, MTIOCGET, &mt_status) < 0)
133 err("%s", strerror(errno));
134 status(&mt_status);
135 }
136 exit (0);
137 /* NOTREACHED */
138 }
139
140 #ifdef vax
141 #include <vax/mba/mtreg.h>
142 #include <vax/mba/htreg.h>
143
144 #include <vax/uba/utreg.h>
145 #include <vax/uba/tmreg.h>
146 #undef b_repcnt /* argh */
147 #include <vax/uba/tsreg.h>
148 #endif
149
150 #ifdef sun
151 #include <sundev/tmreg.h>
152 #include <sundev/arreg.h>
153 #endif
154
155 #ifdef tahoe
156 #include <tahoe/vba/cyreg.h>
157 #endif
158
159 struct tape_desc {
160 short t_type; /* type of magtape device */
161 char *t_name; /* printing name */
162 char *t_dsbits; /* "drive status" register */
163 char *t_erbits; /* "error" register */
164 } tapes[] = {
165 #ifdef vax
166 { MT_ISTS, "ts11", 0, TSXS0_BITS },
167 { MT_ISHT, "tm03", HTDS_BITS, HTER_BITS },
168 { MT_ISTM, "tm11", 0, TMER_BITS },
169 { MT_ISMT, "tu78", MTDS_BITS, 0 },
170 { MT_ISUT, "tu45", UTDS_BITS, UTER_BITS },
171 #endif
172 #ifdef sun
173 { MT_ISCPC, "TapeMaster", TMS_BITS, 0 },
174 { MT_ISAR, "Archive", ARCH_CTRL_BITS, ARCH_BITS },
175 #endif
176 #ifdef tahoe
177 { MT_ISCY, "cipher", CYS_BITS, CYCW_BITS },
178 #endif
179 { 0 }
180 };
181
182 /*
183 * Interpret the status buffer returned
184 */
185 void
186 status(bp)
187 register struct mtget *bp;
188 {
189 register struct tape_desc *mt;
190
191 for (mt = tapes;; mt++) {
192 if (mt->t_type == 0) {
193 (void)printf("%d: unknown tape drive type\n",
194 bp->mt_type);
195 return;
196 }
197 if (mt->t_type == bp->mt_type)
198 break;
199 }
200 (void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid);
201 printreg("ds", bp->mt_dsreg, mt->t_dsbits);
202 printreg("\ner", bp->mt_erreg, mt->t_erbits);
203 (void)putchar('\n');
204 }
205
206 /*
207 * Print a register a la the %b format of the kernel's printf.
208 */
209 void
210 printreg(s, v, bits)
211 char *s;
212 register u_int v;
213 register char *bits;
214 {
215 register int i, any = 0;
216 register char c;
217
218 if (bits && *bits == 8)
219 printf("%s=%o", s, v);
220 else
221 printf("%s=%x", s, v);
222 bits++;
223 if (v && bits) {
224 putchar('<');
225 while (i = *bits++) {
226 if (v & (1 << (i-1))) {
227 if (any)
228 putchar(',');
229 any = 1;
230 for (; (c = *bits) > 32; bits++)
231 putchar(c);
232 } else
233 for (; *bits > 32; bits++)
234 ;
235 }
236 putchar('>');
237 }
238 }
239
240 void
241 usage()
242 {
243 (void)fprintf(stderr, "usage: mt [-f device] command [ count ]\n");
244 exit(1);
245 }
246
247 #if __STDC__
248 #include <stdarg.h>
249 #else
250 #include <varargs.h>
251 #endif
252
253 void
254 #if __STDC__
255 err(const char *fmt, ...)
256 #else
257 err(fmt, va_alist)
258 char *fmt;
259 va_dcl
260 #endif
261 {
262 va_list ap;
263 #if __STDC__
264 va_start(ap, fmt);
265 #else
266 va_start(ap);
267 #endif
268 (void)fprintf(stderr, "mt: ");
269 (void)vfprintf(stderr, fmt, ap);
270 va_end(ap);
271 (void)fprintf(stderr, "\n");
272 exit(1);
273 /* NOTREACHED */
274 }
275