misc.c revision 331722 
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 * 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#ifndef lint
35#if 0
36static char sccsid[] = "@(#)misc.c	8.3 (Berkeley) 4/2/94";
37#endif
38#endif /* not lint */
39#include <sys/cdefs.h>
40__FBSDID("$FreeBSD: stable/11/bin/dd/misc.c 331722 2018-03-29 02:50:57Z eadler $");
41
42#include <sys/types.h>
43
44#include <err.h>
45#include <errno.h>
46#include <inttypes.h>
47#include <signal.h>
48#include <stdio.h>
49#include <stdlib.h>
50#include <string.h>
51#include <time.h>
52#include <unistd.h>
53
54#include "dd.h"
55#include "extern.h"
56
57double
58secs_elapsed(void)
59{
60	struct timespec end, ts_res;
61	double secs, res;
62
63	if (clock_gettime(CLOCK_MONOTONIC, &end))
64		err(1, "clock_gettime");
65	if (clock_getres(CLOCK_MONOTONIC, &ts_res))
66		err(1, "clock_getres");
67	secs = (end.tv_sec - st.start.tv_sec) + \
68	       (end.tv_nsec - st.start.tv_nsec) * 1e-9;
69	res = ts_res.tv_sec + ts_res.tv_nsec * 1e-9;
70	if (secs < res)
71		secs = res;
72
73	return (secs);
74}
75
76void
77summary(void)
78{
79	double secs;
80
81	if (ddflags & C_NOINFO)
82		return;
83
84	secs = secs_elapsed();
85
86	(void)fprintf(stderr,
87	    "%ju+%ju records in\n%ju+%ju records out\n",
88	    st.in_full, st.in_part, st.out_full, st.out_part);
89	if (st.swab)
90		(void)fprintf(stderr, "%ju odd length swab %s\n",
91		     st.swab, (st.swab == 1) ? "block" : "blocks");
92	if (st.trunc)
93		(void)fprintf(stderr, "%ju truncated %s\n",
94		     st.trunc, (st.trunc == 1) ? "block" : "blocks");
95	if (!(ddflags & C_NOXFER)) {
96		(void)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/* ARGSUSED */
104void
105siginfo_handler(int signo __unused)
106{
107
108	need_summary = 1;
109}
110
111/* ARGSUSED */
112void
113terminate(int sig)
114{
115
116	summary();
117	_exit(sig == 0 ? 0 : 1);
118}
119