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
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