dd/misc.c

   1 /*-
   2  * Copyright (c) 1991, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * Keith Muller of the University of California, San Diego and Lance
   7  * Visser of Convex Computer Corporation.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by the University of
  20  *      California, Berkeley and its contributors.
  21  * 4. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)misc.c      8.3 (Berkeley) 4/2/94";
  41 #endif
  42 static const char rcsid[] =
  43   "$FreeBSD: src/bin/dd/misc.c,v 1.23 2002/02/02 06:24:12 imp Exp $";
  44 #endif /* not lint */
  45
  46 #include <sys/types.h>
  47 #include <sys/time.h>
  48
  49 #include <errno.h>
  50 #include <stdio.h>
  51 #include <stdlib.h>
  52 #include <strings.h>
  53 #include <unistd.h>
  54
  55 #include "dd.h"
  56 #include "extern.h"
  57
  58 void
  59 summary(void)
  60 {
  61         struct timeval tv;
  62         double secs;
  63         char buf[100];
  64
  65         (void)gettimeofday(&tv, (struct timezone *)NULL);
  66         secs = tv.tv_sec + tv.tv_usec * 1e-6 - st.start;
  67         if (secs < 1e-6)
  68                 secs = 1e-6;
  69         /* Use snprintf(3) so that we don't reenter stdio(3). */
  70         (void)snprintf(buf, sizeof(buf),
  71             "%qu+%qu records in\n%qu+%qu records out\n",
  72             st.in_full, st.in_part, st.out_full, st.out_part);
  73         (void)write(STDERR_FILENO, buf, strlen(buf));
  74         if (st.swab) {
  75                 (void)snprintf(buf, sizeof(buf), "%qu odd length swab %s\n",
  76                      st.swab, (st.swab == 1) ? "block" : "blocks");
  77                 (void)write(STDERR_FILENO, buf, strlen(buf));
  78         }
  79         if (st.trunc) {
  80                 (void)snprintf(buf, sizeof(buf), "%qu truncated %s\n",
  81                      st.trunc, (st.trunc == 1) ? "record" : "records");
  82                 (void)write(STDERR_FILENO, buf, strlen(buf));
  83         }
  84         (void)snprintf(buf, sizeof(buf),
  85             "%qu bytes transferred in %.6f secs (%.0f bytes/sec)\n",
  86             st.bytes, secs, st.bytes / secs);
  87         (void)write(STDERR_FILENO, buf, strlen(buf));
  88 }
  89
  90 /* ARGSUSED */
  91 void
  92 summaryx(int notused)
  93 {
  94         int save_errno = errno;
  95
  96         summary();
  97         errno = save_errno;
  98 }
  99
 100 /* ARGSUSED */
 101 void
 102 terminate(int sig)
 103 {
 104
 105         summary();
 106         _exit(sig == 0 ? 0 : 1);
 107 }