blob: d70754efd3a44f903b2c10649638dd442768d595 [file] [log] [blame]
#!/bin/sh
#
# Ensure that strace does not retain stdin and stdout descriptors.
#
# Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
# Copyright (c) 2016-2017 The strace developers.
# All rights reserved.
#
# 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. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
. "${srcdir=.}/init.sh"
run_prog_skip_if_failed \
kill -0 $$
check_prog sleep
check_prog yes
> "$OUT"
> "$LOG"
(
while [ -f "$LOG" ]; do
:
done
$SLEEP_A_BIT &
yes
if kill -0 $! 2> /dev/null; then
wait
else
echo TIMEOUT >> "$OUT"
fi
) | $STRACE -qq -enone -esignal=none \
sh -c "exec <&- >&-; rm -f -- $LOG; $SLEEP_A_BIT; $SLEEP_A_BIT"
if [ -s "$OUT" ]; then
fail_ "$STRACE failed to redirect standard input"
fi
> "$LOG"
$STRACE -qq -enone -esignal=none \
sh -c "exec <&- >&-; rm -f -- $LOG; $SLEEP_A_BIT; $SLEEP_A_BIT" |
(
while [ -f "$LOG" ]; do
:
done
$SLEEP_A_BIT &
cat > /dev/null
if kill -0 $! 2> /dev/null; then
wait
else
echo TIMEOUT >> "$OUT"
fi
)
if [ -s "$OUT" ]; then
fail_ "$STRACE failed to redirect standard output"
fi