#!/bin/sh
# Verify that cp -p preserves GID when it is possible.

# Copyright (C) 2007 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/>.

. "$srcdir/../lang-default"
PRIV_CHECK_ARG=require-root . "$srcdir/../priv-check"
. "$srcdir/../test-lib.sh"

create() {
  echo "$1" > "$1" || exit 1
  chown "$2:$3" "$1" || exit 1
}

t0() {
  f=$1; shift
  u=$1; shift
  g=$1; shift
  rm -f b || exit 1
  "$@" "$f" b || exit 1
  s=`stat -c '%u %g' b`
  if test "x$s" != "x$u $g"; then
    echo "$0: $* $f b: $u $g != $s" 1>&2
    (exit 1); exit 1
  fi
}

t1() {
  f=$1; shift
  u=$1; shift
  g=$1; shift
  t0 "$f" "$u" "$g" setuidgid -g "$nameless_gid1,$nameless_gid2" "$nameless_uid" "$@"
}

if test "x$VERBOSE" = xyes; then
  set -x
  cp --version
fi

nameless_uid=`$PERL -e 'foreach my $i (1000..16*1024-1) { getpwuid $i or (print "$i\n"), exit }'`
nameless_gid1=`$PERL -e 'foreach my $i (1000..16*1024) { getgrgid $i or (print "$i\n"), exit }'`
nameless_gid2=`$PERL -e 'foreach my $i ('"$nameless_gid1"'+1..16*1024) { getgrgid $i or (print "$i\n"), exit }'`

if [ -z "$nameless_uid" ] || [ -z "$nameless_gid1" ] || [ -z "$nameless_gid2" ]; then
  echo "$0: couldn't find a nameless UID or GID" 1>&2
  (exit 77); exit 77
fi

chown "$nameless_uid" .

create a0 0 0
create b0 "$nameless_uid" "$nameless_gid1"
create b1 "$nameless_uid" "$nameless_gid2"
create c0 0 "$nameless_gid1"
create c1 0 "$nameless_gid2"

t0 a0 0 0 cp
t0 b0 0 0 cp
t0 b1 0 0 cp
t0 c0 0 0 cp
t0 c1 0 0 cp

t0 a0 0 0 cp -p
t0 b0 "$nameless_uid" "$nameless_gid1" cp -p
t0 b1 "$nameless_uid" "$nameless_gid2" cp -p
t0 c0 0 "$nameless_gid1" cp -p
t0 c1 0 "$nameless_gid2" cp -p

t1 a0 "$nameless_uid" "$nameless_gid1" cp
t1 b0 "$nameless_uid" "$nameless_gid1" cp
t1 b1 "$nameless_uid" "$nameless_gid1" cp
t1 c0 "$nameless_uid" "$nameless_gid1" cp
t1 c1 "$nameless_uid" "$nameless_gid1" cp

t1 a0 "$nameless_uid" "$nameless_gid1" cp -p
t1 b0 "$nameless_uid" "$nameless_gid1" cp -p
t1 b1 "$nameless_uid" "$nameless_gid2" cp -p
t1 c0 "$nameless_uid" "$nameless_gid1" cp -p
t1 c1 "$nameless_uid" "$nameless_gid2" cp -p

(exit 0); exit 0