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########################################################################
# #
# This software is part of the ast package #
# Copyright (c) 1982-2008 AT&T Intellectual Property #
# and is licensed under the #
# Common Public License, Version 1.0 #
# by AT&T Intellectual Property #
# #
# A copy of the License is available at #
# http://www.opensource.org/licenses/cpl1.0.txt #
# (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) #
# #
# Information and Software Systems Research #
# AT&T Research #
# Florham Park NJ #
# #
# David Korn <dgk@research.att.com> #
# #
########################################################################
function err_exit
{
print -u2 -n "\t"
print -u2 -r ${Command}[$1]: "${@:2}"
(( Errors++ ))
}
alias err_exit='err_exit $LINENO'
Command=${0##*/}
integer Errors=0
mkdir /tmp/ksh$$ || err_exit "mkdir /tmp/ksh$$ failed"
trap 'cd /; rm -rf /tmp/ksh$$' EXIT
cd /tmp/ksh$$ || err_exit "cd /tmp/ksh$$ failed"
[[ $( trap 'print -n got_child' SIGCHLD
sleep 2 &
for ((i=0; i < 4; i++))
do sleep .9
print -n $i
done) == 01got_child23 ]] || err_exit 'SIGCHLD not working'
# begin standalone SIGINT test generation
cat > tst <<'!'
# shell trap tests
#
# tst control script that calls tst-1, must be run by ksh
# tst-1 calls tst-2
# tst-2 calls tst-3
# tst-3 defaults or handles and discards/propagates SIGINT
#
# initial -v option lists script entry and SIGINT delivery
#
# three test options
#
# d call next script directly, otherwise via $SHELL -c
# t trap, echo, and kill self on SIGINT, otherwise x or SIGINT default if no x
# x trap, echo on SIGINT, and exit 0, otherwise SIGINT default
#
# Usage: tst [-v] [-options] shell-to-test ...
# "trap + sig" is an unadvertized extension for this test
# if run from nmake SIGINT is set to SIG_IGN
# this call sets it back to SIG_DFL
# semantics w.r.t. function scope must be worked out before
# making it public
trap + INT
set -o monitor
function gen
{
typeset o t x d
for x in - x
do case $x in
[$1]) for t in - t
do case $t in
[$1]) for d in - d
do case $d in
[$1]) o="$o $x$t$d"
esac
done
esac
done
esac
done
echo '' $o
}
case $1 in
-v) v=v; shift ;;
-*v*) v=v ;;
*) v= ;;
esac
case $1 in
*' '*) o=$1; shift ;;
-*) o=$(gen $1); shift ;;
*) o=$(gen -txd) ;;
esac
case $# in
0) set ksh bash ksh88 pdksh ash zsh ;;
esac
for f in $o
do case $# in
1) ;;
*) echo ;;
esac
for sh
do if $sh -c 'exit 0' > /dev/null 2>&1
then case $# in
1) printf '%3s ' "$f" ;;
*) printf '%16s %3s ' "$sh" "$f" ;;
esac
$sh tst-1 $v$f $sh > tst.out &
wait
echo $(cat tst.out)
fi
done
done
case $# in
1) ;;
*) echo ;;
esac
!
cat > tst-1 <<'!'
exec 2>/dev/null
case $1 in
*v*) echo 1-main ;;
esac
{
sleep 2
case $1 in
*v*) echo "SIGINT" ;;
esac
kill -s INT 0
} &
case $1 in
*t*) trap '
echo 1-intr
trap - INT
# omitting the self kill exposes shells that deliver
# the SIGINT trap but exit 0 for -xt
# kill -s INT $$
' INT
;;
esac
case $1 in
*d*) tst-2 $1 $2; status=$? ;;
*) $2 -c "tst-2 $1 $2"; status=$? ;;
esac
printf '1-%04d\n' $status
sleep 2
!
cat > tst-2 <<'!'
case $1 in
*x*) trap '
echo 2-intr
exit
' INT
;;
*t*) trap '
echo 2-intr
trap - INT
kill -s INT $$
' INT
;;
esac
case $1 in
*v*) echo 2-main ;;
esac
case $1 in
*d*) tst-3 $1 $2; status=$? ;;
*) $2 -c "tst-3 $1 $2"; status=$? ;;
esac
printf '2-%04d\n' $status
!
cat > tst-3 <<'!'
case $1 in
*x*) trap '
sleep 2
echo 3-intr
exit 0
' INT
;;
*) trap '
sleep 2
echo 3-intr
trap - INT
kill -s INT $$
' INT
;;
esac
case $1 in
*v*) echo 3-main ;;
esac
sleep 5
printf '3-%04d\n' $?
!
chmod +x tst tst-?
# end standalone test generation
export PATH=$PATH:
typeset -A expected
expected[---]="3-intr"
expected[--d]="3-intr"
expected[-t-]="3-intr 2-intr 1-intr 1-0258"
expected[-td]="3-intr 2-intr 1-intr 1-0258"
expected[x--]="3-intr 2-intr 1-0000"
expected[x-d]="3-intr 2-intr 1-0000"
expected[xt-]="3-intr 2-intr 1-intr 1-0000"
expected[xtd]="3-intr 2-intr 1-intr 1-0000"
tst $SHELL > tst.got
while read ops out
do [[ $out == ${expected[$ops]} ]] || err_exit "interrupt $ops test failed -- expected '${expected[$ops]}', got '$out'"
done < tst.got
float s=$SECONDS
[[ $($SHELL -c 'trap "print SIGUSR1 ; exit 0" USR1; (trap "" USR1 ; exec kill -USR1 $$ & sleep 5); print done') == SIGUSR1 ]] || err_exit 'subshell ignoring signal does not send signal to parent'
(( (SECONDS-s) < 4 )) && err_exit 'parent does not wait for child to complete before handling signal'
((s = SECONDS))
[[ $($SHELL -c 'trap "print SIGUSR1 ; exit 0" USR1; (trap "exit" USR1 ; exec kill -USR1 $$ & sleep 5); print done') == SIGUSR1 ]] || err_exit 'subshell catching signal does not send signal to parent'
(( SECONDS-s < 4 )) && err_exit 'parent completes early'
exit $((Errors))
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