linux/tools/testing/selftests/rcutorture/bin/config_override.sh
Paul E. McKenney c211ae9ce4 torture: Use mktemp instead of guessing at unique names
This commit drags the rcutorture scripting kicking and screaming into the
twenty-first century by making use of the BSD-derived mktemp command to
create temporary files and directories.  In happy contrast to many of its
ill-behaved predecessors, mktemp seems to actually work reasonably reliably!

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-10-18 15:02:59 -07:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0+
#
# config_override.sh base override
#
# Combines base and override, removing any Kconfig options from base
# that conflict with any in override, concatenating what remains and
# sending the result to standard output.
#
# Copyright (C) IBM Corporation, 2017
#
# Authors: Paul E. McKenney <paulmck@linux.ibm.com>
base=$1
if test -r $base
then
:
else
echo Base file $base unreadable!!!
exit 1
fi
override=$2
if test -r $override
then
:
else
echo Override file $override unreadable!!!
exit 1
fi
T="`mktemp -d ${TMPDIR-/tmp}/config_override.sh.XXXXXX`"
trap 'rm -rf $T' 0
sed < $override -e 's/^/grep -v "/' -e 's/=.*$/="/' |
awk '
{
if (last)
print last " |";
last = $0;
}
END {
if (last)
print last;
}' > $T/script
sh $T/script < $base
cat $override