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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Test file and directory owership changes for eventfs
original_group=`stat -c "%g" .`
original_owner=`stat -c "%u" .`
mount_point=`stat -c '%m' .`
mount_options=`mount | grep "$mount_point" | sed -e 's/.*(\(.*\)).*/\1/'`
# find another owner and group that is not the original
other_group=`tac /etc/group | grep -v ":$original_group:" | head -1 | cut -d: -f3`
other_owner=`tac /etc/passwd | grep -v ":$original_owner:" | head -1 | cut -d: -f3`
# Remove any group ownership already
new_options=`echo "$mount_options" | sed -e "s/gid=[0-9]*/gid=$other_group/"`
if [ "$new_options" = "$mount_options" ]; then
new_options="$mount_options,gid=$other_group"
mount_options="$mount_options,gid=$original_group"
fi
canary="events/timer events/timer/timer_cancel events/timer/timer_cancel/format"
test() {
file=$1
test_group=$2
owner=`stat -c "%u" $file`
group=`stat -c "%g" $file`
echo "testing $file $owner=$original_owner and $group=$test_group"
if [ $owner -ne $original_owner ]; then
exit_fail
fi
if [ $group -ne $test_group ]; then
exit_fail
fi
# Note, the remount does not update ownership so test going to and from owner
echo "test owner $file to $other_owner"
chown $other_owner $file
owner=`stat -c "%u" $file`
if [ $owner -ne $other_owner ]; then
exit_fail
fi
chown $original_owner $file
owner=`stat -c "%u" $file`
if [ $owner -ne $original_owner ]; then
exit_fail
fi
}
run_tests() {
for d in "." "events" "events/sched" "events/sched/sched_switch" "events/sched/sched_switch/enable" $canary; do
test "$d" $other_group
done
chgrp $original_group events
test "events" $original_group
for d in "." "events/sched" "events/sched/sched_switch" "events/sched/sched_switch/enable" $canary; do
test "$d" $other_group
done
chgrp $original_group events/sched
test "events/sched" $original_group
for d in "." "events/sched/sched_switch" "events/sched/sched_switch/enable" $canary; do
test "$d" $other_group
done
chgrp $original_group events/sched/sched_switch
test "events/sched/sched_switch" $original_group
for d in "." "events/sched/sched_switch/enable" $canary; do
test "$d" $other_group
done
chgrp $original_group events/sched/sched_switch/enable
test "events/sched/sched_switch/enable" $original_group
for d in "." $canary; do
test "$d" $other_group
done
}
mount -o remount,"$new_options" .
run_tests
mount -o remount,"$mount_options" .
for d in "." "events" "events/sched" "events/sched/sched_switch" "events/sched/sched_switch/enable" $canary; do
test "$d" $original_group
done
# check instances as well
chgrp $other_group instances
instance="$(mktemp -u test-XXXXXX)"
mkdir instances/$instance
cd instances/$instance
run_tests
cd ../..
rmdir instances/$instance
chgrp $original_group instances
exit 0
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