test_ownership.tc

  1#!/bin/sh
  2# SPDX-License-Identifier: GPL-2.0
  3# description: Test file and directory ownership changes for eventfs
  4# requires: "[gid=<gid>]":README
  5
  6original_group=`stat -c "%g" .`
  7original_owner=`stat -c "%u" .`
  8
  9local mount_point=$(get_mount_point)
 10
 11mount_options=$(get_mnt_options "$mount_point")
 12
 13# find another owner and group that is not the original
 14other_group=`tac /etc/group | grep -v ":$original_group:" | head -1 | cut -d: -f3`
 15other_owner=`tac /etc/passwd | grep -v ":$original_owner:" | head -1 | cut -d: -f3`
 16
 17# Remove any group ownership already
 18new_options=`echo "$mount_options" | sed -e "s/gid=[0-9]*/gid=$other_group/"`
 19
 20if [ "$new_options" = "$mount_options" ]; then
 21	new_options="$mount_options,gid=$other_group"
 22	mount_options="$mount_options,gid=$original_group"
 23fi
 24
 25canary="events/timer events/timer/timer_cancel events/timer/timer_cancel/format"
 26
 27test() {
 28	file=$1
 29	test_group=$2
 30
 31	owner=`stat -c "%u" $file`
 32	group=`stat -c "%g" $file`
 33
 34	echo "testing $file $owner=$original_owner and $group=$test_group"
 35	if [ $owner -ne $original_owner ]; then
 36		exit_fail
 37	fi
 38	if [ $group -ne $test_group ]; then
 39		exit_fail
 40	fi
 41
 42	# Note, the remount does not update ownership so test going to and from owner
 43	echo "test owner $file to $other_owner"
 44	chown $other_owner $file
 45	owner=`stat -c "%u" $file`
 46	if [ $owner -ne $other_owner ]; then
 47		exit_fail
 48	fi
 49
 50	chown $original_owner $file
 51	owner=`stat -c "%u" $file`
 52	if [ $owner -ne $original_owner ]; then
 53		exit_fail
 54	fi
 55
 56}
 57
 58run_tests() {
 59	for d in "." "events" "events/sched" "events/sched/sched_switch" "events/sched/sched_switch/enable" $canary; do
 60		test "$d" $other_group
 61	done
 62
 63	chgrp $original_group events
 64	test "events" $original_group
 65	for d in "." "events/sched" "events/sched/sched_switch" "events/sched/sched_switch/enable" $canary; do
 66		test "$d" $other_group
 67	done
 68
 69	chgrp $original_group events/sched
 70	test "events/sched" $original_group
 71	for d in "." "events/sched/sched_switch" "events/sched/sched_switch/enable" $canary; do
 72		test "$d" $other_group
 73	done
 74
 75	chgrp $original_group events/sched/sched_switch
 76	test "events/sched/sched_switch" $original_group
 77	for d in "." "events/sched/sched_switch/enable" $canary; do
 78		test "$d" $other_group
 79	done
 80
 81	chgrp $original_group events/sched/sched_switch/enable
 82	test "events/sched/sched_switch/enable" $original_group
 83	for d in "." $canary; do
 84		test "$d" $other_group
 85	done
 86}
 87
 88# Run the tests twice as leftovers can cause issues
 89for loop in 1 2 ; do
 90
 91	echo "Running iteration $loop"
 92
 93	mount -o remount,"$new_options" .
 94
 95	run_tests
 96
 97	mount -o remount,"$mount_options" .
 98
 99	for d in "." "events" "events/sched" "events/sched/sched_switch" "events/sched/sched_switch/enable" $canary; do
100		test "$d" $original_group
101	done
102
103# check instances as well
104
105	chgrp $other_group instances
106
107	instance="$(mktemp -u test-XXXXXX)"
108
109	mkdir instances/$instance
110
111	cd instances/$instance
112
113	run_tests
114
115	cd ../..
116
117	rmdir instances/$instance
118
119	chgrp $original_group instances
120done
121
122exit 0