tools/testing/selftests/ftrace/test.d/dynevent/add_remove_eprobe.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Generic dynamic event - add/remove eprobe events
   4 # requires: dynamic_events events/syscalls/sys_enter_openat "e[:[<group>/]<event>] <attached-group>.<attached-event> [<args>]":README
   5
   6 echo 0 > events/enable
   7
   8 clear_dynamic_events
   9
  10 SYSTEM="syscalls"
  11 EVENT="sys_enter_openat"
  12 FIELD="filename"
  13 EPROBE="eprobe_open"
  14 OPTIONS="file=+0(\$filename):ustring"
  15 echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  16
  17 grep -q "$EPROBE" dynamic_events
  18 test -d events/eprobes/$EPROBE
  19
  20 echo 1 > events/eprobes/$EPROBE/enable
  21 ls
  22 echo 0 > events/eprobes/$EPROBE/enable
  23
  24 content=`grep '^ *ls-' trace | grep 'file='`
  25 nocontent=`grep '^ *ls-' trace | grep 'file=' | grep -v -e '"/' -e '"."' -e '(fault)' ` || true
  26
  27 if [ -z "$content" ]; then
  28         exit_fail
  29 fi
  30
  31 if [ ! -z "$nocontent" ]; then
  32         exit_fail
  33 fi
  34
  35 echo "-:$EPROBE" >> dynamic_events
  36
  37 ! grep -q "$EPROBE" dynamic_events
  38 ! test -d events/eprobes/$EPROBE
  39
  40 # test various ways to remove the probe (already tested with just event name)
  41
  42 # With group name
  43 echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  44 grep -q "$EPROBE" dynamic_events
  45 test -d events/eprobes/$EPROBE
  46 echo "-:eprobes/$EPROBE" >> dynamic_events
  47 ! grep -q "$EPROBE" dynamic_events
  48 ! test -d events/eprobes/$EPROBE
  49
  50 # With group name and system/event
  51 echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  52 grep -q "$EPROBE" dynamic_events
  53 test -d events/eprobes/$EPROBE
  54 echo "-:eprobes/$EPROBE $SYSTEM/$EVENT" >> dynamic_events
  55 ! grep -q "$EPROBE" dynamic_events
  56 ! test -d events/eprobes/$EPROBE
  57
  58 # With just event name and system/event
  59 echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  60 grep -q "$EPROBE" dynamic_events
  61 test -d events/eprobes/$EPROBE
  62 echo "-:$EPROBE $SYSTEM/$EVENT" >> dynamic_events
  63 ! grep -q "$EPROBE" dynamic_events
  64 ! test -d events/eprobes/$EPROBE
  65
  66 # With just event name and system/event and options
  67 echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  68 grep -q "$EPROBE" dynamic_events
  69 test -d events/eprobes/$EPROBE
  70 echo "-:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  71 ! grep -q "$EPROBE" dynamic_events
  72 ! test -d events/eprobes/$EPROBE
  73
  74 # With group name and system/event and options
  75 echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  76 grep -q "$EPROBE" dynamic_events
  77 test -d events/eprobes/$EPROBE
  78 echo "-:eprobes/$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  79 ! grep -q "$EPROBE" dynamic_events
  80 ! test -d events/eprobes/$EPROBE
  81
  82 # Finally make sure what is in the dynamic_events file clears it too
  83 echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  84 LINE=`sed -e '/$EPROBE/s/^e/-/' < dynamic_events`
  85 test -d events/eprobes/$EPROBE
  86 echo "-:eprobes/$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
  87 ! grep -q "$EPROBE" dynamic_events
  88 ! test -d events/eprobes/$EPROBE
  89
  90 clear_trace