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

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37 The Regents of the University of California. All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41#if 0
42static char sccsid[] = "@(#)tcopy.c 8.2 (Berkeley) 4/17/94";
43#endif
44static const char rcsid[] =
45 "$Id$";
46#endif /* not lint */
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>

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60#include <unistd.h>
61
62#include "pathnames.h"
63
64#define MAXREC (64 * 1024)
65#define NOCOUNT (-2)
66
67int filen, guesslen, maxblk = MAXREC;
68u_long lastrec, record, size, tsize;
69FILE *msg = stdout;
70
71void *getspace __P((int));
72void intr __P((int));
73static void usage __P((void));
74void verify __P((int, int, char *));
75void writeop __P((int, int));
76
77int
78main(argc, argv)
79 int argc;
80 char *argv[];
81{
82 register int lastnread, nread, nw, inp, outp;
83 enum {READ, VERIFY, COPY, COPYVERIFY} op = READ;

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151 needeof = 0;
152 for (lastnread = NOCOUNT;;) {
153 if ((nread = read(inp, buff, maxblk)) == -1) {
154 while (errno == EINVAL && (maxblk -= 1024)) {
155 nread = read(inp, buff, maxblk);
156 if (nread >= 0)
157 goto r1;
158 }
159 err(1, "read error, file %d, record %ld", filen, record);
160 } else if (nread != lastnread) {
161 if (lastnread != 0 && lastnread != NOCOUNT) {
162 if (lastrec == 0 && nread == 0)
163 fprintf(msg, "%ld records\n", record);
164 else if (record - lastrec > 1)
165 fprintf(msg, "records %ld to %ld\n",
166 lastrec, record);
167 else
168 fprintf(msg, "record %ld\n", lastrec);
169 }
170 if (nread != 0)
171 fprintf(msg, "file %d: block size %d: ",
172 filen, nread);
173 (void) fflush(stdout);
174 lastrec = record;
175 }
176r1: guesslen = 0;
177 if (nread > 0) {
178 if (op == COPY || op == COPYVERIFY) {
179 if (needeof) {
180 writeop(outp, MTWEOF);
181 needeof = 0;
182 }
183 nw = write(outp, buff, nread);
184 if (nw != nread) {
185 if (nw == -1) {
186 warn("write error, file %d, record %ld", filen, record);
187 } else {
188 warnx("write error, file %d, record %ld", filen, record);
189 warnx("write (%d) != read (%d)", nw, nread);
190 }
191 errx(5, "copy aborted");
192 }
193 }
194 size += nread;
195 record++;
196 } else {
197 if (lastnread <= 0 && lastnread != NOCOUNT) {
198 fprintf(msg, "eot\n");
199 break;
200 }
201 fprintf(msg,
202 "file %d: eof after %lu records: %lu bytes\n",
203 filen, record, size);
204 needeof = 1;
205 filen++;
206 tsize += size;
207 size = record = lastrec = 0;
208 lastnread = 0;
209 }
210 lastnread = nread;
211 }
212 fprintf(msg, "total length: %lu bytes\n", tsize);
213 (void)signal(SIGINT, oldsig);
214 if (op == COPY || op == COPYVERIFY) {
215 writeop(outp, MTWEOF);
216 writeop(outp, MTWEOF);
217 if (op == COPYVERIFY) {
218 writeop(outp, MTREW);
219 writeop(inp, MTREW);
220 verify(inp, outp, buff);
221 }
222 }
223 exit(0);
224}
225
226void
227verify(inp, outp, outb)

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278}
279
280void
281intr(signo)
282 int signo;
283{
284 if (record)
285 if (record - lastrec > 1)
286 fprintf(msg, "records %ld to %ld\n", lastrec, record);
287 else
288 fprintf(msg, "record %ld\n", lastrec);
289 fprintf(msg, "interrupt at file %d: record %ld\n", filen, record);
290 fprintf(msg, "total length: %ld bytes\n", tsize + size);
291 exit(1);
292}
293
294void *
295getspace(blk)
296 int blk;
297{

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315}
316
317static void
318usage()
319{
320 fprintf(stderr, "usage: tcopy [-cvx] [-s maxblk] [src [dest]]\n");
321 exit(1);
322}