1#!/bin/sh
  2# SPDX-License-Identifier: GPL-2.0+
  3#
  4# Parse arguments common to the various scripts.
  5#
  6# . scripts/parseargs.sh
  7#
  8# Include into other Linux kernel tools/memory-model scripts.
  9#
 10# Copyright IBM Corporation, 2018
 11#
 12# Author: Paul E. McKenney <paulmck@linux.ibm.com>
 13
 14T=/tmp/parseargs.sh.$$
 15mkdir $T
 16
 17# Initialize one parameter: initparam name default
 18initparam () {
 19	echo if test -z '"$'$1'"' > $T/s
 20	echo then >> $T/s
 21	echo	$1='"'$2'"' >> $T/s
 22	echo	export $1 >> $T/s
 23	echo fi >> $T/s
 24	echo $1_DEF='$'$1  >> $T/s
 25	. $T/s
 26}
 27
 28initparam LKMM_DESTDIR "."
 29initparam LKMM_HERD_OPTIONS "-conf linux-kernel.cfg"
 30initparam LKMM_HW_MAP_FILE ""
 31initparam LKMM_JOBS `getconf _NPROCESSORS_ONLN`
 32initparam LKMM_PROCS "3"
 33initparam LKMM_TIMEOUT "1m"
 34
 35scriptname=$0
 36
 37usagehelp () {
 38	echo "Usage $scriptname [ arguments ]"
 39	echo "      --destdir path (place for .litmus.out, default by .litmus)"
 40	echo "      --herdopts -conf linux-kernel.cfg ..."
 41	echo "      --hw AArch64"
 42	echo "      --jobs N (number of jobs, default one per CPU)"
 43	echo "      --procs N (litmus tests with at most this many processes)"
 44	echo "      --timeout N (herd7 timeout (e.g., 10s, 1m, 2hr, 1d, '')"
 45	echo "Defaults: --destdir '$LKMM_DESTDIR_DEF' --herdopts '$LKMM_HERD_OPTIONS_DEF' --hw '$LKMM_HW_MAP_FILE' --jobs '$LKMM_JOBS_DEF' --procs '$LKMM_PROCS_DEF' --timeout '$LKMM_TIMEOUT_DEF'"
 46	exit 1
 47}
 48
 49usage () {
 50	usagehelp 1>&2
 51}
 52
 53# checkarg --argname argtype $# arg mustmatch cannotmatch
 54checkarg () {
 55	if test $3 -le 1
 56	then
 57		echo $1 needs argument $2 matching \"$5\"
 58		usage
 59	fi
 60	if echo "$4" | grep -q -e "$5"
 61	then
 62		:
 63	else
 64		echo $1 $2 \"$4\" must match \"$5\"
 65		usage
 66	fi
 67	if echo "$4" | grep -q -e "$6"
 68	then
 69		echo $1 $2 \"$4\" must not match \"$6\"
 70		usage
 71	fi
 72}
 73
 74while test $# -gt 0
 75do
 76	case "$1" in
 77	--destdir)
 78		checkarg --destdir "(path to directory)" "$#" "$2" '.\+' '^--'
 79		LKMM_DESTDIR="$2"
 80		mkdir $LKMM_DESTDIR > /dev/null 2>&1
 81		if ! test -e "$LKMM_DESTDIR"
 82		then
 83			echo "Cannot create directory --destdir '$LKMM_DESTDIR'"
 84			usage
 85		fi
 86		if test -d "$LKMM_DESTDIR" -a -x "$LKMM_DESTDIR"
 87		then
 88			:
 89		else
 90			echo "Directory --destdir '$LKMM_DESTDIR' insufficient permissions to create files"
 91			usage
 92		fi
 93		shift
 94		;;
 95	--herdopts|--herdopt)
 96		checkarg --destdir "(herd7 options)" "$#" "$2" '.*' '^--'
 97		LKMM_HERD_OPTIONS="$2"
 98		shift
 99		;;
100	--hw)
101		checkarg --hw "(.map file architecture name)" "$#" "$2" '^[A-Za-z0-9_-]\+' '^--'
102		LKMM_HW_MAP_FILE="$2"
103		shift
104		;;
105	-j[1-9]*)
106		njobs="`echo $1 | sed -e 's/^-j//'`"
107		trailchars="`echo $njobs | sed -e 's/[0-9]\+\(.*\)$/\1/'`"
108		if test -n "$trailchars"
109		then
110			echo $1 trailing characters "'$trailchars'"
111			usagehelp
112		fi
113		LKMM_JOBS="`echo $njobs | sed -e 's/^\([0-9]\+\).*$/\1/'`"
114		;;
115	--jobs|--job|-j)
116		checkarg --jobs "(number)" "$#" "$2" '^[1-9][0-9]*$' '^--'
117		LKMM_JOBS="$2"
118		shift
119		;;
120	--procs|--proc)
121		checkarg --procs "(number)" "$#" "$2" '^[0-9]\+$' '^--'
122		LKMM_PROCS="$2"
123		shift
124		;;
125	--timeout)
126		checkarg --timeout "(timeout spec)" "$#" "$2" '^\([0-9]\+[smhd]\?\|\)$' '^--'
127		LKMM_TIMEOUT="$2"
128		shift
129		;;
130	--)
131		shift
132		break
133		;;
134	*)
135		echo Unknown argument $1
136		usage
137		;;
138	esac
139	shift
140done
141if test -z "$LKMM_TIMEOUT"
142then
143	LKMM_TIMEOUT_CMD=""; export LKMM_TIMEOUT_CMD
144else
145	LKMM_TIMEOUT_CMD="timeout $LKMM_TIMEOUT"; export LKMM_TIMEOUT_CMD
146fi
147rm -rf $T