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Open Menu / tools / testing / selftests / ftrace / test.d / dynevent / add_remove_eprobe.tc
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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Generic dynamic event - add/remove eprobe events
# requires: dynamic_events events/syscalls/sys_enter_openat "<attached-group>.<attached-event> [<args>]":README

echo 0 > events/enable

clear_dynamic_events

SYSTEM="syscalls"
EVENT="sys_enter_openat"
FIELD="filename"
EPROBE="eprobe_open"
OPTIONS="file=+0(\$filename):ustring"
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events

grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE

echo 1 > events/eprobes/$EPROBE/enable
ls
echo 0 > events/eprobes/$EPROBE/enable

content=`grep '^ *ls-' trace | grep 'file='`
nocontent=`grep '^ *ls-' trace | grep 'file=' | grep -v -e '"/' -e '"."' -e '(fault)' ` || true

if [ -z "$content" ]; then
	exit_fail
fi

if [ ! -z "$nocontent" ]; then
	exit_fail
fi

echo "-:$EPROBE" >> dynamic_events

! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# test various ways to remove the probe (already tested with just event name)

# With group name
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:eprobes/$EPROBE" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# With group name and system/event
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:eprobes/$EPROBE $SYSTEM/$EVENT" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# With just event name and system/event
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:$EPROBE $SYSTEM/$EVENT" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# With just event name and system/event and options
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# With group name and system/event and options
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:eprobes/$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# Finally make sure what is in the dynamic_events file clears it too
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
LINE=`sed -e '/$EPROBE/s/^e/-/' < dynamic_events`
test -d events/eprobes/$EPROBE
echo "-:eprobes/$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

if grep -q "e\[:\[<group>/]\[<event>]]" README; then
	echo "e:mygroup/ $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
	test -d events/mygroup
	echo "-:mygroup/" >> dynamic_events
	! test -d events/mygroup
fi

clear_trace