1#!/bin/bash 2# perf trace enum augmentation tests 3# SPDX-License-Identifier: GPL-2.0 4 5err=0 6 7syscall="landlock_add_rule" 8non_syscall="timer:hrtimer_start" 9 10TESTPROG="perf test -w landlock" 11 12# shellcheck source=lib/probe.sh 13. "$(dirname $0)"/lib/probe.sh 14skip_if_no_perf_trace || exit 2 15[ "$(id -u)" = 0 ] || exit 2 16 17check_vmlinux() { 18 echo "Checking if vmlinux exists" 19 if [ ! -f /sys/kernel/btf/vmlinux ] 20 then 21 echo "trace+enum test [Skipped missing vmlinux BTF support]" 22 err=2 23 fi 24} 25 26trace_landlock() { 27 echo "Tracing syscall ${syscall}" 28 29 # test flight just to see if landlock_add_rule is available 30 if ! perf trace $TESTPROG 2>&1 | grep -q landlock 31 then 32 echo "No landlock system call found, skipping to non-syscall tracing." 33 return 34 fi 35 36 output="$(perf trace -e $syscall $TESTPROG 2>&1)" 37 if echo "$output" | 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.*" 38 then 39 err=0 40 else 41 printf "[syscall failure] Failed to trace syscall $syscall, output:\n$output\n" 42 err=1 43 fi 44} 45 46trace_non_syscall() { 47 echo "Tracing non-syscall tracepoint ${non_syscall}" 48 output="$(perf trace -e $non_syscall --max-events=1 2>&1)" 49 if echo "$output" | grep -q -E '.*timer:hrtimer_.*\(.*mode: HRTIMER_MODE_.*\)$' 50 then 51 err=0 52 else 53 printf "[tracepoint failure] Failed to trace tracepoint $non_syscall, output:\n$output\n" 54 err=1 55 fi 56} 57 58check_vmlinux 59 60if [ $err = 0 ]; then 61 trace_landlock 62fi 63 64if [ $err = 0 ]; then 65 trace_non_syscall 66fi 67 68exit $err 69