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aec3e1e107
* tests/cp/preserve-gid: Simply chmod a+rx instead. That is safer, in case the nameless UID actually has an account, and might take advantage of root running a program in a directory under its control
137 lines
3.7 KiB
Bash
Executable File
137 lines
3.7 KiB
Bash
Executable File
#!/bin/sh
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# Verify that cp -p preserves GID when it is possible.
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# Copyright (C) 2007-2011 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/init.sh"; path_prepend_ ../src
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print_ver_ cp
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require_root_
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# Some of the tests expect a umask that grants group and/or world read access.
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working_umask_or_skip_
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# Record primary group number, usually 0.
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# This is the group ID used when cp (without -p) creates a new file.
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primary_group_num=$(id -g)
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create() {
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echo "$1" > "$1" || exit 1
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chown "+$2:+$3" "$1" || exit 1
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}
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t0() {
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f=$1; shift
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u=$1; shift
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g=$1; shift
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rm -f b || exit 1
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"$@" "$f" b || exit 1
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s=`stat -c '%u %g' b`
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if test "x$s" != "x$u $g"; then
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# Allow the actual group to match that of the parent directory
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# (it was set to 0 above).
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if test "x$s" = "x$u $primary_group_num"; then
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:
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else
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echo "$0: $* $f b: $u $g != $s" 1>&2
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Exit 1
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fi
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fi
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}
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nameless_uid=`$PERL -le '
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foreach my $i (1000..16*1024-1)
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{
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getpwuid $i or (print $i), exit
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}
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'`
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nameless_gid1=`$PERL -le '
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foreach my $i (1000..16*1024)
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{
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getgrgid $i or (print $i), exit
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}
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'`
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nameless_gid2=`$PERL -le '
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foreach my $i ('"$nameless_gid1"'+1..16*1024)
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{
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getgrgid $i or (print $i), exit
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}
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'`
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if test -z "$nameless_uid" \
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|| test -z "$nameless_gid1" \
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|| test -z "$nameless_gid2"; then
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skip_test_ "couldn't find a nameless UID or GID"
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fi
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chown "+$nameless_uid:+0" .
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create a0 0 0
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create b0 "$nameless_uid" "$nameless_gid1"
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create b1 "$nameless_uid" "$nameless_gid2"
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create c0 0 "$nameless_gid1"
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create c1 0 "$nameless_gid2"
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t0 a0 0 0 cp
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t0 b0 0 0 cp
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t0 b1 0 0 cp
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t0 c0 0 0 cp
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t0 c1 0 0 cp
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t0 a0 0 0 cp -p
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t0 b0 "$nameless_uid" "$nameless_gid1" cp -p
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t0 b1 "$nameless_uid" "$nameless_gid2" cp -p
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t0 c0 0 "$nameless_gid1" cp -p
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t0 c1 0 "$nameless_gid2" cp -p
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# For the remaining tests, we need a cp binary that is accessible to a user
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# with UID of $nameless_uid. The build directory may not be accessible,
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# so create a temporary directory and copy cp into it, ensure that
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# $nameless_uid can access it and then make that directory the search path.
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tmp_path=
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cleanup_() { rm -rf "$tmp_path"; }
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# Cause mktemp to create a directory directly under /tmp.
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# Setting TMPDIR explicitly is required here, in case $TMPDIR
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# is not readable by our nameless IDs.
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test -d /tmp && TMPDIR=/tmp
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tmp_path=$(mktemp -d) || fail_ "failed to create temporary directory"
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cp "$abs_path_dir_/cp" "$tmp_path"
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chmod -R a+rx "$tmp_path"
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t1() {
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f=$1; shift
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u=$1; shift
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g=$1; shift
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t0 "$f" "$u" "$g" \
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setuidgid -g "$nameless_gid1,$nameless_gid2" \
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"$nameless_uid" env PATH="$tmp_path" "$@"
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}
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t1 a0 "$nameless_uid" "$nameless_gid1" cp
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t1 b0 "$nameless_uid" "$nameless_gid1" cp
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t1 b1 "$nameless_uid" "$nameless_gid1" cp
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t1 c0 "$nameless_uid" "$nameless_gid1" cp
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t1 c1 "$nameless_uid" "$nameless_gid1" cp
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t1 a0 "$nameless_uid" "$nameless_gid1" cp -p
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t1 b0 "$nameless_uid" "$nameless_gid1" cp -p
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t1 b1 "$nameless_uid" "$nameless_gid2" cp -p
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t1 c0 "$nameless_uid" "$nameless_gid1" cp -p
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t1 c1 "$nameless_uid" "$nameless_gid2" cp -p
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Exit $fail
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