#!/bin/sh# perf trace enum augmentation tests# SPDX-License-Identifier: GPL-2.0 err=0set -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.shskip_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 and libbpf are available  $TESTPROG   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_landlockfi if [ $err = 0 ]; then  trace_non_syscallfi exit $err