diff options
Diffstat (limited to '')
| -rwxr-xr-x | tests/cp/preserve-gid.sh | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/tests/cp/preserve-gid.sh b/tests/cp/preserve-gid.sh new file mode 100755 index 0000000..8b36eab --- /dev/null +++ b/tests/cp/preserve-gid.sh @@ -0,0 +1,146 @@ +#!/bin/sh +# Verify that cp -p preserves GID when it is possible. + +# Copyright (C) 2007-2022 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 <https://www.gnu.org/licenses/>. + +. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src +print_ver_ cp + +require_perl_ +require_root_ + +# Some of the tests expect a umask that grants group and/or world read access. +working_umask_or_skip_ + +# Record primary group number, usually 0. +# This is the group ID used when cp (without -p) creates a new file. +primary_group_num=$(id -g) + +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 $g"; then + # Allow the actual group to match that of the parent directory + # (it was set to 0 above). + if test "x$s" = "x$u $primary_group_num"; then + : + else + echo "$0: $* $f b: $u $g != $s" 1>&2 + Exit 1 + fi + fi +} + +nameless_uid=$($PERL -le ' + foreach my $i (1000..16*1024-1) + { + getpwuid $i or (print $i), exit + } +') +nameless_gid1=$($PERL -le ' + foreach my $i (1000..16*1024) + { + getgrgid $i or (print $i), exit + } +') +nameless_gid2=$($PERL -le ' + foreach my $i ('"$nameless_gid1"'+1..16*1024) + { + getgrgid $i or (print $i), exit + } +') + +if test -z "$nameless_uid" \ + || test -z "$nameless_gid1" \ + || test -z "$nameless_gid2"; then + skip_ "couldn't find a nameless UID or GID" +fi + +chown "+$nameless_uid:+0" . + +create a0 0 0 +create b0 "$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 + +# For the remaining tests, we need a cp binary that is accessible to a user +# with UID of $nameless_uid. The build directory may not be accessible, +# so create a temporary directory and copy cp into it, ensure that +# $nameless_uid can access it and then make that directory the search path. +tmp_path= +cleanup_() { rm -rf "$tmp_path"; } + +# Cause mktemp to create a directory directly under /tmp. +# Setting TMPDIR explicitly is required here, in case $TMPDIR +# is not readable by our nameless IDs. +test -d /tmp && TMPDIR=/tmp +tmp_path=$(mktemp -d) || fail_ "failed to create temporary directory" +if test -x "$abs_path_dir_/coreutils" && + { test -L "$abs_path_dir_/cp" || + test $(wc -l < "$abs_path_dir_/cp") = 1; } then + # if configured with --enable-single-binary we need to use the single binary + cp "$abs_path_dir_/coreutils" "$tmp_path/cp" || framework_failure_ +else + cp "$abs_path_dir_/cp" "$tmp_path" +fi +chmod -R a+rx "$tmp_path" + +t1() { + f=$1; shift + u=$1; shift + g=$1; shift + t0 "$f" "$u" "$g" \ + chroot --skip-chdir \ + --user=+$nameless_uid:+$nameless_gid1 \ + --groups="+$nameless_gid1,+$nameless_gid2" \ + / env PATH="$tmp_path" "$@" +} + +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 $fail |