1 /* 2 * Copyright (c) 1985, 1987, 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 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 static const char copyright[] = 40 "@(#) Copyright (c) 1985, 1987, 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif 43 44 #ifndef lint 45 static const char sccsid[] = "@(#)tcopy.c 8.2 (Berkeley) 4/17/94"; 46 #endif 47 48 #include <sys/types.h> 49 #include <sys/stat.h> 50 #include <sys/ioctl.h> 51 #include <sys/mtio.h> 52 53 #include <err.h> 54 #include <errno.h> 55 #include <fcntl.h> 56 #include <paths.h> 57 #include <signal.h> 58 #include <stdint.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <unistd.h> 63 64 #define MAXREC (64 * 1024) 65 #define NOCOUNT (-2) 66 67 int filen, guesslen, maxblk = MAXREC; 68 u_int64_t lastrec, record, size, tsize; 69 FILE *msg; 70 71 void *getspace(int); 72 void intr(int); 73 static void usage(void) __dead2; 74 void verify(int, int, char *); 75 void writeop(int, int); 76 void rewind_tape(int); 77 78 int 79 main(int argc, char *argv[]) 80 { 81 int lastnread, nread, nw, inp, outp; 82 enum {READ, VERIFY, COPY, COPYVERIFY} op = READ; 83 sig_t oldsig; 84 int ch, needeof; 85 char *buff; 86 const char *inf; 87 88 msg = stdout; 89 guesslen = 1; 90 outp = -1; 91 while ((ch = getopt(argc, argv, "cs:vx")) != -1) 92 switch((char)ch) { 93 case 'c': 94 op = COPYVERIFY; 95 break; 96 case 's': 97 maxblk = atoi(optarg); 98 if (maxblk <= 0) { 99 warnx("illegal block size"); 100 usage(); 101 } 102 guesslen = 0; 103 break; 104 case 'v': 105 op = VERIFY; 106 break; 107 case 'x': 108 msg = stderr; 109 break; 110 case '?': 111 default: 112 usage(); 113 } 114 argc -= optind; 115 argv += optind; 116 117 switch(argc) { 118 case 0: 119 if (op != READ) 120 usage(); 121 inf = _PATH_DEFTAPE; 122 break; 123 case 1: 124 if (op != READ) 125 usage(); 126 inf = argv[0]; 127 break; 128 case 2: 129 if (op == READ) 130 op = COPY; 131 inf = argv[0]; 132 if ((outp = open(argv[1], op == VERIFY ? O_RDONLY : 133 op == COPY ? O_WRONLY : O_RDWR, DEFFILEMODE)) < 0) 134 err(3, "%s", argv[1]); 135 break; 136 default: 137 usage(); 138 } 139 140 if ((inp = open(inf, O_RDONLY, 0)) < 0) 141 err(1, "%s", inf); 142 143 buff = getspace(maxblk); 144 145 if (op == VERIFY) { 146 verify(inp, outp, buff); 147 exit(0); 148 } 149 150 if ((oldsig = signal(SIGINT, SIG_IGN)) != SIG_IGN) 151 (void) signal(SIGINT, intr); 152 153 needeof = 0; 154 for (lastnread = NOCOUNT;;) { 155 if ((nread = read(inp, buff, maxblk)) == -1) { 156 while (errno == EINVAL && (maxblk -= 1024)) { 157 nread = read(inp, buff, maxblk); 158 if (nread >= 0) 159 goto r1; 160 } 161 err(1, "read error, file %d, record %ju", filen, (intmax_t)record); 162 } else if (nread != lastnread) { 163 if (lastnread != 0 && lastnread != NOCOUNT) { 164 if (lastrec == 0 && nread == 0) 165 fprintf(msg, "%ju records\n", (intmax_t)record); 166 else if (record - lastrec > 1) 167 fprintf(msg, "records %ju to %ju\n", 168 (intmax_t)lastrec, (intmax_t)record); 169 else 170 fprintf(msg, "record %ju\n", (intmax_t)lastrec); 171 } 172 if (nread != 0) 173 fprintf(msg, "file %d: block size %d: ", 174 filen, nread); 175 (void) fflush(stdout); 176 lastrec = record; 177 } 178 r1: guesslen = 0; 179 if (nread > 0) { 180 if (op == COPY || op == COPYVERIFY) { 181 if (needeof) { 182 writeop(outp, MTWEOF); 183 needeof = 0; 184 } 185 nw = write(outp, buff, nread); 186 if (nw != nread) { 187 if (nw == -1) { 188 warn("write error, file %d, record %ju", filen, 189 (intmax_t)record); 190 } else { 191 warnx("write error, file %d, record %ju", filen, 192 (intmax_t)record); 193 warnx("write (%d) != read (%d)", nw, nread); 194 } 195 errx(5, "copy aborted"); 196 } 197 } 198 size += nread; 199 record++; 200 } else { 201 if (lastnread <= 0 && lastnread != NOCOUNT) { 202 fprintf(msg, "eot\n"); 203 break; 204 } 205 fprintf(msg, 206 "file %d: eof after %ju records: %ju bytes\n", 207 filen, (intmax_t)record, (intmax_t)size); 208 needeof = 1; 209 filen++; 210 tsize += size; 211 size = record = lastrec = 0; 212 lastnread = 0; 213 } 214 lastnread = nread; 215 } 216 fprintf(msg, "total length: %ju bytes\n", (intmax_t)tsize); 217 (void)signal(SIGINT, oldsig); 218 if (op == COPY || op == COPYVERIFY) { 219 writeop(outp, MTWEOF); 220 writeop(outp, MTWEOF); 221 if (op == COPYVERIFY) { 222 rewind_tape(outp); 223 rewind_tape(inp); 224 verify(inp, outp, buff); 225 } 226 } 227 exit(0); 228 } 229 230 void 231 verify(int inp, int outp, char *outb) 232 { 233 int eot, inmaxblk, inn, outmaxblk, outn; 234 char *inb; 235 236 inb = getspace(maxblk); 237 inmaxblk = outmaxblk = maxblk; 238 for (eot = 0;; guesslen = 0) { 239 if ((inn = read(inp, inb, inmaxblk)) == -1) { 240 if (guesslen) 241 while (errno == EINVAL && (inmaxblk -= 1024)) { 242 inn = read(inp, inb, inmaxblk); 243 if (inn >= 0) 244 goto r1; 245 } 246 warn("read error"); 247 break; 248 } 249 r1: if ((outn = read(outp, outb, outmaxblk)) == -1) { 250 if (guesslen) 251 while (errno == EINVAL && (outmaxblk -= 1024)) { 252 outn = read(outp, outb, outmaxblk); 253 if (outn >= 0) 254 goto r2; 255 } 256 warn("read error"); 257 break; 258 } 259 r2: if (inn != outn) { 260 fprintf(msg, 261 "%s: tapes have different block sizes; %d != %d.\n", 262 "tcopy", inn, outn); 263 break; 264 } 265 if (!inn) { 266 if (eot++) { 267 fprintf(msg, "tcopy: tapes are identical.\n"); 268 return; 269 } 270 } else { 271 if (bcmp(inb, outb, inn)) { 272 fprintf(msg, 273 "tcopy: tapes have different data.\n"); 274 break; 275 } 276 eot = 0; 277 } 278 } 279 exit(1); 280 } 281 282 void 283 intr(int signo __unused) 284 { 285 if (record) { 286 if (record - lastrec > 1) 287 fprintf(msg, "records %ju to %ju\n", (intmax_t)lastrec, (intmax_t)record); 288 else 289 fprintf(msg, "record %ju\n", (intmax_t)lastrec); 290 } 291 fprintf(msg, "interrupt at file %d: record %ju\n", filen, (intmax_t)record); 292 fprintf(msg, "total length: %ju bytes\n", (uintmax_t)(tsize + size)); 293 exit(1); 294 } 295 296 void * 297 getspace(int blk) 298 { 299 void *bp; 300 301 if ((bp = malloc((size_t)blk)) == NULL) 302 errx(11, "no memory"); 303 return (bp); 304 } 305 306 void 307 writeop(int fd, int type) 308 { 309 struct mtop op; 310 311 op.mt_op = type; 312 op.mt_count = (daddr_t)1; 313 if (ioctl(fd, MTIOCTOP, (char *)&op) < 0) 314 err(6, "tape op"); 315 } 316 317 static void 318 usage(void) 319 { 320 fprintf(stderr, "usage: tcopy [-cvx] [-s maxblk] [src [dest]]\n"); 321 exit(1); 322 } 323 324 void 325 rewind_tape(int fd) 326 { 327 struct stat sp; 328 329 if(fstat(fd, &sp)) 330 errx(12, "fstat in rewind"); 331 332 /* 333 * don't want to do tape ioctl on regular files: 334 */ 335 if( S_ISREG(sp.st_mode) ) { 336 if( lseek(fd, 0, SEEK_SET) == -1 ) 337 errx(13, "lseek"); 338 } else 339 /* assume its a tape */ 340 writeop(fd, MTREW); 341 } 342