mt.c revision 1.9
1 /* $NetBSD: mt.c,v 1.9 1996/03/05 20:39:32 scottr Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef lint 37 static char copyright[] = 38 "@(#) Copyright (c) 1980, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"; 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)mt.c 8.2 (Berkeley) 6/6/93"; 45 #else 46 static char rcsid[] = "$NetBSD: mt.c,v 1.9 1996/03/05 20:39:32 scottr Exp $"; 47 #endif 48 #endif /* not lint */ 49 50 /* 51 * mt -- 52 * magnetic tape manipulation program 53 */ 54 #include <sys/types.h> 55 #include <sys/ioctl.h> 56 #include <sys/mtio.h> 57 #include <fcntl.h> 58 #include <err.h> 59 #include <stdlib.h> 60 #include <stdio.h> 61 #include <ctype.h> 62 #include <string.h> 63 64 #include "mt.h" 65 66 struct commands { 67 char *c_name; 68 int c_code; 69 int c_ronly; 70 } com[] = { 71 { "bsf", MTBSF, 1 }, 72 { "bsr", MTBSR, 1 }, 73 { "eof", MTWEOF, 0 }, 74 { "eom", MTEOM, 1 }, 75 { "erase", MTERASE, 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 { "retension", MTRETEN, 1 }, 83 { "weof", MTWEOF, 0 }, 84 { NULL } 85 }; 86 87 void printreg __P((char *, u_int, char *)); 88 void status __P((struct mtget *)); 89 void usage __P((void)); 90 91 char *host = NULL; /* remote host (if any) */ 92 93 int 94 main(argc, argv) 95 int argc; 96 char *argv[]; 97 { 98 register struct commands *comp; 99 struct mtget mt_status; 100 struct mtop mt_com; 101 int ch, len, mtfd; 102 char *p, *tape; 103 104 if ((tape = getenv("TAPE")) == NULL) 105 tape = DEFTAPE; 106 107 while ((ch = getopt(argc, argv, "f:t:")) != -1) 108 switch (ch) { 109 case 'f': 110 case 't': 111 tape = optarg; 112 break; 113 case '?': 114 default: 115 usage(); 116 } 117 argc -= optind; 118 argv += optind; 119 120 if (argc < 1 || argc > 2) 121 usage(); 122 123 if (strchr(tape, ':')) { 124 host = tape; 125 tape = strchr(host, ':'); 126 *tape++ = '\0'; 127 if (rmthost(host) == 0) 128 exit(X_ABORT); 129 } 130 (void)setuid(getuid()); /* rmthost() is the only reason to be setuid */ 131 132 len = strlen(p = *argv++); 133 for (comp = com;; comp++) { 134 if (comp->c_name == NULL) 135 errx(1, "%s: unknown command", p); 136 if (strncmp(p, comp->c_name, len) == 0) 137 break; 138 } 139 if ((mtfd = host ? rmtopen(tape, 2) : 140 open(tape, O_WRONLY|O_CREAT, 0666)) < 0) 141 err(2, "%s", tape); 142 if (comp->c_code != MTNOP) { 143 mt_com.mt_op = comp->c_code; 144 if (*argv) { 145 mt_com.mt_count = strtol(*argv, &p, 10); 146 if (mt_com.mt_count <= 0 || *p) 147 errx(2, "%s: illegal count", *argv); 148 } 149 else 150 mt_com.mt_count = 1; 151 if ((host ? rmtioctl(mt_com.mt_op, mt_com.mt_count) : 152 ioctl(mtfd, MTIOCTOP, &mt_com)) < 0) 153 err(2, "%s: %s", tape, comp->c_name); 154 } else { 155 if (host) { 156 status(rmtstatus()); 157 } else { 158 if (ioctl(mtfd, MTIOCGET, &mt_status) < 0) 159 err(2, "ioctl MTIOCGET"); 160 status(&mt_status); 161 } 162 } 163 164 if (host) 165 rmtclose(); 166 167 exit(X_FINOK); 168 /* NOTREACHED */ 169 } 170 171 #ifdef sun 172 #include <sundev/tmreg.h> 173 #include <sundev/arreg.h> 174 #endif 175 176 #ifdef tahoe 177 #include <tahoe/vba/cyreg.h> 178 #endif 179 180 struct tape_desc { 181 short t_type; /* type of magtape device */ 182 char *t_name; /* printing name */ 183 char *t_dsbits; /* "drive status" register */ 184 char *t_erbits; /* "error" register */ 185 } tapes[] = { 186 #ifdef sun 187 { MT_ISCPC, "TapeMaster", TMS_BITS, 0 }, 188 { MT_ISAR, "Archive", ARCH_CTRL_BITS, ARCH_BITS }, 189 #endif 190 #ifdef tahoe 191 { MT_ISCY, "cipher", CYS_BITS, CYCW_BITS }, 192 #endif 193 { 0 } 194 }; 195 196 /* 197 * Interpret the status buffer returned 198 */ 199 void 200 status(bp) 201 register struct mtget *bp; 202 { 203 register struct tape_desc *mt; 204 205 for (mt = tapes;; mt++) { 206 if (mt->t_type == 0) { 207 (void)printf("%d: unknown tape drive type\n", 208 bp->mt_type); 209 return; 210 } 211 if (mt->t_type == bp->mt_type) 212 break; 213 } 214 (void)printf("%s tape drive, residual=%d\n", mt->t_name, bp->mt_resid); 215 printreg("ds", bp->mt_dsreg, mt->t_dsbits); 216 printreg("\ner", bp->mt_erreg, mt->t_erbits); 217 (void)putchar('\n'); 218 } 219 220 /* 221 * Print a register a la the %b format of the kernel's printf. 222 */ 223 void 224 printreg(s, v, bits) 225 char *s; 226 register u_int v; 227 register char *bits; 228 { 229 register int i, any = 0; 230 register char c; 231 232 if (bits && *bits == 8) 233 printf("%s=%o", s, v); 234 else 235 printf("%s=%x", s, v); 236 bits++; 237 if (v && bits) { 238 putchar('<'); 239 while (i = *bits++) { 240 if (v & (1 << (i-1))) { 241 if (any) 242 putchar(','); 243 any = 1; 244 for (; (c = *bits) > 32; bits++) 245 putchar(c); 246 } else 247 for (; *bits > 32; bits++) 248 ; 249 } 250 putchar('>'); 251 } 252 } 253 254 void 255 usage() 256 { 257 (void)fprintf(stderr, "usage: mt [-f device] command [ count ]\n"); 258 exit(X_USAGE); 259 } 260
Indexes created Wed Sep 24 05:09:52 GMT 2025