misc.c revision 330897 
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 * 4. 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
36#ifndef lint
37#if 0
38static char sccsid[] = "@(#)misc.c	8.3 (Berkeley) 4/2/94";
39#endif
40#endif /* not lint */
41#include <sys/cdefs.h>
42__FBSDID("$FreeBSD: stable/11/bin/dd/misc.c 330897 2018-03-14 03:19:51Z eadler $");
43
44#include <sys/types.h>
45
46#include <err.h>
47#include <errno.h>
48#include <inttypes.h>
49#include <signal.h>
50#include <stdio.h>
51#include <stdlib.h>
52#include <string.h>
53#include <time.h>
54#include <unistd.h>
55
56#include "dd.h"
57#include "extern.h"
58
59double
60secs_elapsed(void)
61{
62	struct timespec end, ts_res;
63	double secs, res;
64
65	if (clock_gettime(CLOCK_MONOTONIC, &end))
66		err(1, "clock_gettime");
67	if (clock_getres(CLOCK_MONOTONIC, &ts_res))
68		err(1, "clock_getres");
69	secs = (end.tv_sec - st.start.tv_sec) + \
70	       (end.tv_nsec - st.start.tv_nsec) * 1e-9;
71	res = ts_res.tv_sec + ts_res.tv_nsec * 1e-9;
72	if (secs < res)
73		secs = res;
74
75	return (secs);
76}
77
78void
79summary(void)
80{
81	double secs;
82
83	if (ddflags & C_NOINFO)
84		return;
85
86	secs = secs_elapsed();
87
88	(void)fprintf(stderr,
89	    "%ju+%ju records in\n%ju+%ju records out\n",
90	    st.in_full, st.in_part, st.out_full, st.out_part);
91	if (st.swab)
92		(void)fprintf(stderr, "%ju odd length swab %s\n",
93		     st.swab, (st.swab == 1) ? "block" : "blocks");
94	if (st.trunc)
95		(void)fprintf(stderr, "%ju truncated %s\n",
96		     st.trunc, (st.trunc == 1) ? "block" : "blocks");
97	if (!(ddflags & C_NOXFER)) {
98		(void)fprintf(stderr,
99		    "%ju bytes transferred in %.6f secs (%.0f bytes/sec)\n",
100		    st.bytes, secs, st.bytes / secs);
101	}
102	need_summary = 0;
103}
104
105/* ARGSUSED */
106void
107siginfo_handler(int signo __unused)
108{
109
110	need_summary = 1;
111}
112
113/* ARGSUSED */
114void
115terminate(int sig)
116{
117
118	summary();
119	_exit(sig == 0 ? 0 : 1);
120}
121