######################################################################## # # # This software is part of the ast package # # Copyright (c) 1982-2010 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 # # # ######################################################################## 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 tmp=$(mktemp -dt) || { err_exit mktemp -dt failed; exit 1; } trap "cd /; rm -rf $tmp" EXIT cd $tmp || err_exit "cd $tmp failed" ( set --pipefail { $SHELL 2> out2 <<- \EOF g=false trap 'print -u2 PIPED; $g && exit 0;g=true' PIPE while : do print hello done EOF } | head > /dev/null (( $? == 0)) || err_exit "SIGPIPE with wrong error code $?" [[ $(/dev/null & spy=$! if wait $cop 2>/dev/null then kill $spy 2>/dev/null else err_exit "pipe with --pipefail PIPE trap hangs" fi wait rm -f out2 [[ $( trap 'print -n got_child' SIGCHLD sleep 2 & for ((i=0; i < 4; i++)) do sleep .75 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 tst-3 exit 0, tst-2 exit, otherwise SIGINT default # z trap, echo on SIGINT, and tst-3 exit 0, tst-2 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 z 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 $$ ' INT ;; esac case $1 in *d*) tst-2 $1 $2; status=$? ;; *) $2 -c "tst-2 $1 $2"; status=$? ;; esac printf '1-%04d\n' $status sleep 2 ! cat > tst-2 <<'!' case $1 in *z*) trap ' echo 2-intr exit 0 ' INT ;; *x*) trap ' echo 2-intr exit ' INT ;; *t*) trap ' echo 2-intr trap - INT kill -s INT $$ ' 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 *[xz]*) trap ' sleep 2 echo 3-intr exit 0 ' INT ;; *) trap ' sleep 2 echo 3-intr trap - INT kill -s INT $$ ' INT ;; esac case $1 in *v*) echo 3-main ;; esac sleep 5 printf '3-%04d\n' $? ! chmod +x tst tst-? # end standalone test generation export PATH=$PATH: typeset -A expected expected[---]="3-intr" expected[--d]="3-intr" expected[-t-]="3-intr 2-intr 1-intr 1-0258" expected[-td]="3-intr 2-intr 1-intr 1-0258" expected[x--]="3-intr 2-intr" expected[x-d]="3-intr 2-intr" expected[xt-]="3-intr 2-intr 1-intr 1-0258" expected[xtd]="3-intr 2-intr 1-intr 1-0258" expected[z--]="3-intr 2-intr 1-0000" expected[z-d]="3-intr 2-intr 1-0000" expected[zt-]="3-intr 2-intr 1-intr 1-0000" expected[ztd]="3-intr 2-intr 1-intr 1-0000" tst $SHELL > tst.got while read ops out do [[ $out == ${expected[$ops]} ]] || err_exit "interrupt $ops test failed -- expected '${expected[$ops]}', got '$out'" done < tst.got float s=$SECONDS [[ $($SHELL -c 'trap "print SIGUSR1 ; exit 0" USR1; (trap "" USR1 ; exec kill -USR1 $$ & 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 $$ & sleep 5); print done') == SIGUSR1 ]] || err_exit 'subshell catching signal does not send signal to parent' (( SECONDS-s < 4 )) && err_exit 'parent completes early' unset n s t for s in $(kill -l) do if ! n=$(kill -l $s 2>/dev/null) then err_exit "'kill -l $s' failed" continue fi if ! t=$(kill -l $n 2>/dev/null) then err_exit "'kill -l $n' failed" continue fi if [[ $s == ?(SIG)$t ]] then continue fi if ! m=$(kill -l $t 2>/dev/null) then err_exit "'kill -l $t' failed" continue fi if [[ $m == $n ]] then continue fi err_exit "'kill -l $s' => $n, 'kill -l $n' => $t, kill -l $t => $m -- expected $n" done yes=$(whence -p yes) [[ $yes ]] && for exp in TERM VTALRM PIPE do { $SHELL <<- EOF foo() { return 0; } trap foo EXIT { sleep 2; kill -$exp \$\$; sleep 3; kill -0 \$\$ && kill -KILL \$\$; } & $yes | while read yes; do (/bin/date; sleep .1) done > /dev/null EOF } 2>> /dev/null got=$(kill -l $?) [[ $exp == $got ]] || err_exit "kill -$exp \$\$ failed, required termination by signal '$got'" done SECONDS=0 $SHELL 2> /dev/null -c 'sleep 2 && kill $$ & trap "print done;exit 3" EXIT; (sleep 5);print finished' > $tmp/sig (( $?==3)) || err_exit "wrong exit status expecting 3 got $?" x=$(<$tmp/sig) [[ $x == done ]] || err_exit "wrong result - execting done got $x" (( SECONDS > 3.5 )) && err_exit "took $SECONDS seconds, expecting around 2" SECONDS=0 { $SHELL 2> /dev/null -c 'sleep 2 && kill $$ & trap "print done;exit" EXIT; (sleep 5);print finished' > $tmp/sig ;} 2> /dev/null [[ $(kill -l $?) == TERM ]] || err_exit "wrong exit status expecting TERM got $(kill -l $?)" x=$(<$tmp/sig) [[ $x == done ]] || err_exit "wrong result - execting done got $x" (( SECONDS > 3.5 )) && err_exit "took $SECONDS seconds, expecting around 2" SECONDS=0 x=$($SHELL 2> /dev/null -c 'sleep 2 && kill $$ & trap "print done;exit 3" EXIT; (sleep 5);print finished') (( $?==3)) || err_exit "wrong exit status expecting 3 got $?" [[ $x == done ]] || err_exit "wrong result - execting done got $x" (( SECONDS < 4 )) && err_exit "took $SECONDS seconds, expecting around 5" trap '' SIGBUS [[ $($SHELL -c 'trap date SIGBUS;trap -p SIGBUS') ]] && err_exit 'SIGBUS should not have a trap' trap -- - SIGBUS exit $((Errors))