tools/testing/selftests/damon/_chk_dependency.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 # Kselftest framework requirement - SKIP code is 4.
   5 ksft_skip=4
   6
   7 DBGFS=$(grep debugfs /proc/mounts --max-count 1 | awk '{print $2}')
   8 if [ "$DBGFS" = "" ]
   9 then
  10         echo "debugfs not mounted"
  11         exit $ksft_skip
  12 fi
  13
  14 DBGFS+="/damon"
  15
  16 if [ $EUID -ne 0 ];
  17 then
  18         echo "Run as root"
  19         exit $ksft_skip
  20 fi
  21
  22 if [ ! -d "$DBGFS" ]
  23 then
  24         echo "$DBGFS not found"
  25         exit $ksft_skip
  26 fi
  27
  28 if [ -f "$DBGFS/monitor_on_DEPRECATED" ]
  29 then
  30         monitor_on_file="monitor_on_DEPRECATED"
  31 else
  32         monitor_on_file="monitor_on"
  33 fi
  34
  35 for f in attrs target_ids "$monitor_on_file"
  36 do
  37         if [ ! -f "$DBGFS/$f" ]
  38         then
  39                 echo "$f not found"
  40                 exit 1
  41         fi
  42 done
  43
  44 permission_error="Operation not permitted"
  45 for f in attrs target_ids "$monitor_on_file"
  46 do
  47         status=$( cat "$DBGFS/$f" 2>&1 )
  48         if [ "${status#*$permission_error}" != "$status" ]; then
  49                 echo "Permission for reading $DBGFS/$f denied; maybe secureboot enabled?"
  50                 exit $ksft_skip
  51         fi
  52 done