#!/bin/sh
# Check that zgrep is terminated gracefully by signal when
# its grep/sed pipeline is terminated by a signal.

# Copyright (C) 2010-2013 Free Software Foundation, Inc.

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
# limit so don't run it by default.

. "${srcdir=.}/init.sh"; path_prepend_ ..

echo a | gzip -c > f.gz || framework_failure_

test "x$PERL" = x && PERL=perl
("$PERL" -e 'use warnings') >/dev/null 2>&1 || skip_ "no suitable perl found"

exec_with_SIGPIPE_SIG_DFL () {
  program=${1?}
  shift
  args=
  for arg; do
    args="$args, '$arg'"
  done
  "$PERL" -e "\$SIG{PIPE} = 'DEFAULT'; exec '$program'$args"
}

write_to_dangling_pipe () {
  exec 3>&1
  (
    exec_with_SIGPIPE_SIG_DFL "$@"
    echo $? >&3
  ) | : || framework_failure_
}

signal_status=$(write_to_dangling_pipe cat f.gz f.gz)
test 128 -lt $signal_status ||
  framework_failure_ 'signal handling busted on this host'

fail=0

st=$(write_to_dangling_pipe zgrep a f.gz f.gz)

test $st = $signal_status || fail=1

Exit $fail