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#!/bin/sh
# Check stats output for SIG{INFO,USR1} and status=progress
# Copyright (C) 2014-2015 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ dd
env kill -l | grep '^INFO$' && SIGINFO='INFO' || SIGINFO='USR1'
# This to avoid races in the USR1 case
# as the dd process will terminate by default until
# it has its handler enabled.
trap '' $SIGINFO
mkfifo_or_skip_ fifo
for open in '' '1'; do
# Run dd with the fullblock iflag to avoid short reads
# which can be triggered by reception of signals
dd iflag=fullblock if=/dev/zero of=fifo count=100 bs=5000000 2>err & pid=$!
# Note if we sleep here we give dd a chance to exec and block on open.
# Otherwise we're probably testing SIG_IGN in the forked shell or early dd.
test "$open" && sleep .1
# dd will block on open until fifo is opened for reading.
# Timeout in case dd goes away erroneously which we check for below.
timeout 10 sh -c 'wc -c < fifo > nwritten' &
# Send lots of signals immediately to ensure dd not killed due
# to race setting handler, or blocking on open of fifo.
# Many signals also check that short reads are handled.
until ! kill -s $SIGINFO $pid 2>/dev/null; do
sleep .01
done
wait
# Ensure all data processed and at least last status written
grep '500000000 bytes .* copied' err || { cat err; fail=1; }
done
progress_output()
{
{ sleep "$1"; echo 1; } | dd bs=1 status=progress of=/dev/null 2>err
# Progress output should be for "byte ... copied", while final is "bytes ..."
grep 'byte .* copied' err
}
retry_delay_ progress_output 1 4 || { cat err; fail=1; }
Exit $fail
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