bin/dd/misc.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  *
   4  * Copyright (c) 1991, 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Keith Muller of the University of California, San Diego and Lance
   9  * Visser of Convex Computer Corporation.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. 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  * @(#)misc.c   8.3 (Berkeley) 4/2/94
  36  * $FreeBSD: head/bin/dd/misc.c 338646 2018-09-13 14:54:46Z kevans $
  37  */
  38
  39 #include <sys/types.h>
  40
  41 #include <err.h>
  42 #include <errno.h>
  43 #include <libutil.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #include <time.h>
  48 #include <unistd.h>
  49
  50 #include "dd.h"
  51 #include "extern.h"
  52
  53 double
  54 secs_elapsed(void)
  55 {
  56         struct timespec end, ts_res;
  57         double secs, res;
  58
  59         if (clock_gettime(CLOCK_MONOTONIC, &end))
  60                 err(1, "clock_gettime");
  61         if (clock_getres(CLOCK_MONOTONIC, &ts_res))
  62                 err(1, "clock_getres");
  63         secs = (end.tv_sec - st.start.tv_sec) +
  64                (end.tv_nsec - st.start.tv_nsec) * 1e-9;
  65         res = ts_res.tv_sec + ts_res.tv_nsec * 1e-9;
  66         if (secs < res)
  67                 secs = res;
  68
  69         return (secs);
  70 }
  71
  72 void
  73 summary(void)
  74 {
  75         double secs;
  76
  77         if (ddflags & C_NOINFO)
  78                 return;
  79
  80         if (ddflags & C_PROGRESS)
  81                 fprintf(stderr, "\n");
  82
  83         secs = secs_elapsed();
  84
  85         fprintf(stderr, "%ju+%ju records in\n%ju+%ju records out\n",
  86             st.in_full, st.in_part, st.out_full, st.out_part);
  87         if (st.swab) {
  88                 fprintf(stderr, "%ju odd length swab %s\n",
  89                      st.swab, (st.swab == 1) ? "block" : "blocks");
  90         }
  91         if (st.trunc) {
  92                 fprintf(stderr, "%ju truncated %s\n",
  93                      st.trunc, (st.trunc == 1) ? "block" : "blocks");
  94         }
  95         if (!(ddflags & C_NOXFER)) {
  96                 fprintf(stderr,
  97                     "%ju bytes transferred in %.6f secs (%.0f bytes/sec)\n",
  98                     st.bytes, secs, st.bytes / secs);
  99         }
 100         need_summary = 0;
 101 }
 102
 103 void
 104 progress(void)
 105 {
 106         static int outlen;
 107         char si[4 + 1 + 2 + 1];         /* 123 <space> <suffix> NUL */
 108         char iec[4 + 1 + 3 + 1];        /* 123 <space> <suffix> NUL */
 109         char persec[4 + 1 + 2 + 1];     /* 123 <space> <suffix> NUL */
 110         char *buf;
 111         double secs;
 112
 113         secs = secs_elapsed();
 114         humanize_number(si, sizeof(si), (int64_t)st.bytes, "B", HN_AUTOSCALE,
 115             HN_DECIMAL | HN_DIVISOR_1000);
 116         humanize_number(iec, sizeof(iec), (int64_t)st.bytes, "B", HN_AUTOSCALE,
 117             HN_DECIMAL | HN_IEC_PREFIXES);
 118         humanize_number(persec, sizeof(persec), (int64_t)(st.bytes / secs), "B",
 119             HN_AUTOSCALE, HN_DECIMAL | HN_DIVISOR_1000);
 120         asprintf(&buf, "  %'ju bytes (%s, %s) transferred %.3fs, %s/s",
 121             (uintmax_t)st.bytes, si, iec, secs, persec);
 122         outlen = fprintf(stderr, "%-*s\r", outlen, buf) - 1;
 123         fflush(stderr);
 124         free(buf);
 125         need_progress = 0;
 126 }
 127
 128 void
 129 siginfo_handler(int signo __unused)
 130 {
 131         need_summary = 1;
 132 }
 133
 134 void
 135 sigalarm_handler(int signo __unused)
 136 {
 137         need_progress = 1;
 138 }
 139
 140 void
 141 terminate(int sig)
 142 {
 143         summary();
 144         _exit(sig == 0 ? 0 : 1);
 145 }