tools/testing/selftests/ftrace/test.d/00basic/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
   6 original_group=`stat -c "%g" .`
   7 original_owner=`stat -c "%u" .`
   8
   9 local mount_point=$(get_mount_point)
  10
  11 mount_options=$(get_mnt_options "$mount_point")
  12
  13 # find another owner and group that is not the original
  14 other_group=`tac /etc/group | grep -v ":$original_group:" | head -1 | cut -d: -f3`
  15 other_owner=`tac /etc/passwd | grep -v ":$original_owner:" | head -1 | cut -d: -f3`
  16
  17 # Remove any group ownership already
  18 new_options=`echo "$mount_options" | sed -e "s/gid=[0-9]*/gid=$other_group/"`
  19
  20 if [ "$new_options" = "$mount_options" ]; then
  21         new_options="$mount_options,gid=$other_group"
  22         mount_options="$mount_options,gid=$original_group"
  23 fi
  24
  25 canary="events/timer events/timer/timer_cancel events/timer/timer_cancel/format"
  26
  27 test() {
  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
  58 run_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
  89 for 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
 120 done
 121
 122 exit 0