xref: /freebsd/bin/dd/misc.c (revision 396c556d77189a5c474d35cec6f44a762e310b7d)
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 
36 #ifndef lint
37 #if 0
38 static char sccsid[] = "@(#)misc.c	8.3 (Berkeley) 4/2/94";
39 #endif
40 #endif /* not lint */
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
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 
59 double
60 secs_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 
78 void
79 summary(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 */
106 void
107 siginfo_handler(int signo __unused)
108 {
109 
110 	need_summary = 1;
111 }
112 
113 /* ARGSUSED */
114 void
115 terminate(int sig)
116 {
117 
118 	summary();
119 	_exit(sig == 0 ? 0 : 1);
120 }
121