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
Indexes created Tue Oct 21 12:09:54 GMT 2025