#!/bin/sh
# Prior to coreutils-6.5, an inaccessible destination dir (chmod a-x)
# would cause du to exit prematurely on systems with native openat support.

# Copyright (C) 2006 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.

if test "$VERBOSE" = yes; then
  set -x
  du --version
fi

. $srcdir/../envvar-check
. $srcdir/../lang-default
PRIV_CHECK_ARG=require-non-root . $srcdir/../priv-check

pwd=`pwd`
t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
trap 'status=$?; cd "$pwd" && chmod -R u+rwx $t0 && rm -rf $t0 && exit $status' 0
trap '(exit $?); exit $?' 1 2 13 15

framework_failure=0
mkdir -p $tmp || framework_failure=1
cd $tmp || framework_failure=1

mkdir f && cd f && mkdir a b c d e && touch c/j && chmod a-x c \
    || framework_failure=1

if test $framework_failure = 1; then
  echo "$0: failure in testing framework" 1>&2
  (exit 1); exit 1
fi

fail=0

du > ../t 2>&1 && fail=1

# Accept either of the following outputs.
# You get the first from a system with openat _emulation_ (via /proc),
# the second from a system with native openat support.
# FIXME: there may well be a third output, for systems with neither
# /proc support, nor native openat support.

sed 's/^[0-9][0-9]*	//' ../t | sort -u > out
cat <<\EOF > exp || fail=1
.
./a
./b
./d
./e
du: `./c': Permission denied
EOF

cat <<\EOF > exp2 || fail=1
.
./a
./b
./c
./d
./e
du: cannot access `./c/j': Permission denied
EOF

cmp out exp > /dev/null 2>&1 || {
  cmp out exp2 || fail=1
  }
test $fail = 1 && diff out exp 2> /dev/null

(exit $fail); exit $fail