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#!/bin/sh
# perf trace enum augmentation tests
# SPDX-License-Identifier: GPL-2.0
err=0
set -e
syscall="landlock_add_rule"
non_syscall="timer:hrtimer_init,timer:hrtimer_start"
TESTPROG="perf test -w landlock"
# shellcheck source=lib/probe.sh
. "$(dirname $0)"/lib/probe.sh
skip_if_no_perf_trace || exit 2
check_vmlinux() {
echo "Checking if vmlinux exists"
if ! ls /sys/kernel/btf/vmlinux 1>/dev/null 2>&1
then
echo "trace+enum test [Skipped missing vmlinux BTF support]"
err=2
fi
}
trace_landlock() {
echo "Tracing syscall ${syscall}"
# test flight just to see if landlock_add_rule is available
if ! perf trace $TESTPROG 2>&1 | grep -q landlock
then
echo "No landlock system call found, skipping to non-syscall tracing."
return
fi
if perf trace -e $syscall $TESTPROG 2>&1 | \
grep -q -E ".*landlock_add_rule\(ruleset_fd: 11, rule_type: (LANDLOCK_RULE_PATH_BENEATH|LANDLOCK_RULE_NET_PORT), rule_attr: 0x[a-f0-9]+, flags: 45\) = -1.*"
then
err=0
else
err=1
fi
}
trace_non_syscall() {
echo "Tracing non-syscall tracepoint ${non-syscall}"
if perf trace -e $non_syscall --max-events=1 2>&1 | \
grep -q -E '.*timer:hrtimer_.*\(.*mode: HRTIMER_MODE_.*\)$'
then
err=0
else
err=1
fi
}
check_vmlinux
if [ $err = 0 ]; then
trace_landlock
fi
if [ $err = 0 ]; then
trace_non_syscall
fi
exit $err
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