76 lines
2.4 KiB
Bash
Executable file
76 lines
2.4 KiB
Bash
Executable file
#!/bin/sh
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# Check stats output for SIG{INFO,USR1} and status=progress
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# Copyright (C) 2014-2025 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ dd
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require_trap_signame_
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kill -l | grep 'INFO' && SIGINFO='INFO' || SIGINFO='USR1'
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# This to avoid races in the USR1 case
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# as the dd process will terminate by default until
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# it has its handler enabled.
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trap '' $SIGINFO
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mkfifo_or_skip_ fifo
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# Terminate any background processes
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cleanup_()
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{
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kill $pid 2>/dev/null
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kill $pid2 2>/dev/null
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wait
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}
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for open in '' '1'; do
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> err || framework_failure_
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# Run dd with the fullblock iflag to avoid short reads
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# which can be triggered by reception of signals
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dd iflag=fullblock if=/dev/zero of=fifo count=50 bs=5000000 2>err & pid=$!
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# Note if we sleep here we give dd a chance to exec and block on open.
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# Otherwise we're probably testing SIG_IGN in the forked shell or early dd.
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test "$open" && sleep .1
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# dd will block on open until fifo is opened for reading.
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# Timeout in case dd goes away erroneously which we check for below.
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timeout 60 sh -c 'wc -c < fifo > nwritten' & pid2=$!
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# Send lots of signals immediately to ensure dd not killed due
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# to race setting handler, or blocking on open of fifo.
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# Many signals also check that short reads are handled.
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until ! kill -s $SIGINFO $pid 2>/dev/null; do
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sleep .01
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done
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wait
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# Ensure all data processed and at least last status written
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grep '250000000 bytes (250 MB, 238 MiB) copied' err || { cat err; fail=1; }
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done
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progress_output()
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{
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{ sleep $1; echo 1; } | dd bs=1 status=progress of=/dev/null 2>err
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# Progress output should be for "byte copied", while final is "bytes ..."
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grep 'byte copied' err
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}
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retry_delay_ progress_output 1 4 || { cat err; fail=1; }
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Exit $fail
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