1#!/bin/sh
 2# perf trace enum augmentation tests
 3# SPDX-License-Identifier: GPL-2.0
 4
 5err=0
 6set -e
 7
 8syscall="landlock_add_rule"
 9non_syscall="timer:hrtimer_init,timer:hrtimer_start"
10
11TESTPROG="perf test -w landlock"
12
13# shellcheck source=lib/probe.sh
14. "$(dirname $0)"/lib/probe.sh
15skip_if_no_perf_trace || exit 2
16
17check_vmlinux() {
18  echo "Checking if vmlinux exists"
19  if ! ls /sys/kernel/btf/vmlinux 1>/dev/null 2>&1
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  if perf trace -e $syscall $TESTPROG 2>&1 | \
37     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    err=1
42  fi
43}
44
45trace_non_syscall() {
46  echo "Tracing non-syscall tracepoint ${non-syscall}"
47  if perf trace -e $non_syscall --max-events=1 2>&1 | \
48     grep -q -E '.*timer:hrtimer_.*\(.*mode: HRTIMER_MODE_.*\)$'
49  then
50    err=0
51  else
52    err=1
53  fi
54}
55
56check_vmlinux
57
58if [ $err = 0 ]; then
59  trace_landlock
60fi
61
62if [ $err = 0 ]; then
63  trace_non_syscall
64fi
65
66exit $err