/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Keith Muller of the University of California, San Diego and Lance
* Visser of Convex Computer Corporation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)misc.c 8.3 (Berkeley) 4/2/94";
#endif
#endif /* not lint */
#include <sys/cdefs.h>
#include <sys/types.h>
#include <err.h>
#include <errno.h>
#include <inttypes.h>
#include <libutil.h>
#include <signal.h>
#include <stdatomic.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "dd.h"
#include "extern.h"
double
secs_elapsed(void)
{
struct timespec end, ts_res;
double secs, res;
if (clock_gettime(CLOCK_MONOTONIC, &end))
err(1, "clock_gettime");
if (clock_getres(CLOCK_MONOTONIC, &ts_res))
err(1, "clock_getres");
secs = (end.tv_sec - st.start.tv_sec) + \
(end.tv_nsec - st.start.tv_nsec) * 1e-9;
res = ts_res.tv_sec + ts_res.tv_nsec * 1e-9;
if (secs < res)
secs = res;
return (secs);
}
void
summary(void)
{
double secs;
if (ddflags & C_NOINFO)
return;
if (ddflags & C_PROGRESS)
fprintf(stderr, "\n");
secs = secs_elapsed();
(void)fprintf(stderr,
"%ju+%ju records in\n%ju+%ju records out\n",
st.in_full, st.in_part, st.out_full, st.out_part);
if (st.swab)
(void)fprintf(stderr, "%ju odd length swab %s\n",
st.swab, (st.swab == 1) ? "block" : "blocks");
if (st.trunc)
(void)fprintf(stderr, "%ju truncated %s\n",
st.trunc, (st.trunc == 1) ? "block" : "blocks");
if (!(ddflags & C_NOXFER)) {
(void)fprintf(stderr,
"%ju bytes transferred in %.6f secs (%.0f bytes/sec)\n",
st.bytes, secs, st.bytes / secs);
}
need_summary = 0;
}
void
progress(void)
{
static int outlen;
char si[4 + 1 + 2 + 1]; /* 123 <space> <suffix> NUL */
char iec[4 + 1 + 3 + 1]; /* 123 <space> <suffix> NUL */
char persec[4 + 1 + 2 + 1]; /* 123 <space> <suffix> NUL */
char *buf;
double secs;
secs = secs_elapsed();
humanize_number(si, sizeof(si), (int64_t)st.bytes, "B", HN_AUTOSCALE,
HN_DECIMAL | HN_DIVISOR_1000);
humanize_number(iec, sizeof(iec), (int64_t)st.bytes, "B", HN_AUTOSCALE,
HN_DECIMAL | HN_IEC_PREFIXES);
humanize_number(persec, sizeof(persec), (int64_t)(st.bytes / secs), "B",
HN_AUTOSCALE, HN_DECIMAL | HN_DIVISOR_1000);
asprintf(&buf, " %'ju bytes (%s, %s) transferred %.3fs, %s/s",
(uintmax_t)st.bytes, si, iec, secs, persec);
outlen = fprintf(stderr, "%-*s\r", outlen, buf) - 1;
fflush(stderr);
free(buf);
need_progress = 0;
}
/* ARGSUSED */
void
siginfo_handler(int signo __unused)
{
need_summary = 1;
}
/* ARGSUSED */
void
sigalarm_handler(int signo __unused)
{
need_progress = 1;
}
static void terminate(int signo) __dead2;
static void
terminate(int signo)
{
kill_signal = signo;
summary();
(void)fflush(stderr);
raise(kill_signal);
/* NOT REACHED */
_exit(1);
}
static sig_atomic_t in_io = 0;
static sig_atomic_t sigint_seen = 0;
static void
sigint_handler(int signo __unused)
{
atomic_signal_fence(memory_order_acquire);
if (in_io)
terminate(SIGINT);
sigint_seen = 1;
}
void
prepare_io(void)
{
struct sigaction sa;
int error;
memset(&sa, 0, sizeof(sa));
sa.sa_flags = SA_NODEFER | SA_RESETHAND;
sa.sa_handler = sigint_handler;
error = sigaction(SIGINT, &sa, 0);
if (error != 0)
err(1, "sigaction");
}
void
before_io(void)
{
in_io = 1;
atomic_signal_fence(memory_order_seq_cst);
if (sigint_seen)
terminate(SIGINT);
}
void
after_io(void)
{
in_io = 0;
atomic_signal_fence(memory_order_seq_cst);
if (sigint_seen)
terminate(SIGINT);
}
