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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# failed-syscalls-by-pid python test
set -e
shelldir=$(dirname "$0")
# shellcheck source=lib/setup_python.sh
. "${shelldir}"/lib/setup_python.sh
if ! "$PYTHON" -c 'import perf' > /dev/null 2>&1; then
echo "Skipping test, perf python module not found"
exit 2
fi
script_dir="$(dirname "$0")/../../python"
script_path="${script_dir}/failed-syscalls-by-pid.py"
if ! perf check feature -q libtraceevent > /dev/null 2>&1; then
echo "Skipping test, libtraceevent is disabled"
exit 2
fi
if [ ! -f "$script_path" ]; then
echo "Skipping test, failed-syscalls-by-pid.py not found at $script_path"
exit 2
fi
err=0
temp_dir=$(mktemp -d /tmp/perf-failed-syscalls-by-pid-XXXXXX)
temp_data="${temp_dir}/perf.data"
temp_out="${temp_dir}/perf.out"
cleanup() {
rm -rf "${temp_dir}"
}
trap 'cleanup' EXIT TERM INT
test_file_mode() {
echo "Testing failed-syscalls-by-pid.py..."
# Check if syscalls:sys_exit is supported/readable
if ! perf record -B -N --no-bpf-event -e syscalls:sys_exit \
-o /dev/null -- true >/dev/null 2>&1; then
if ! perf record -B -N --no-bpf-event -e raw_syscalls:sys_exit \
-o /dev/null -- true >/dev/null 2>&1; then
echo "Skipping test, no syscalls:sys_exit or raw_syscalls:sys_exit event"
exit 2
else
EVENT="raw_syscalls:sys_exit"
fi
else
EVENT="syscalls:sys_exit"
fi
# Generate some events by running a command that fails a syscall
# (e.g. failing stat on non-existent file), sleeping briefly in the
# subshell so ls's PERF_RECORD_COMM and sys_exit events are flushed.
passed=0
for _ in 1 2 3 4 5; do
rm -f "${temp_data}" "${temp_out}" "${temp_out}.comm" "${temp_out}.pid"
perf record -B -N --no-bpf-event -e "${EVENT}" -o "${temp_data}" \
-- sh -c "ls /does_not_exist 2>/dev/null; sleep 0.05 || true" \
>/dev/null 2>&1 || true
if [ ! -s "${temp_data}" ]; then
continue
fi
if perf script failed-syscalls-by-pid -i "${temp_data}" > "${temp_out}" && \
grep -n -q "err = ENOENT" "${temp_out}" && \
perf script failed-syscalls-by-pid -i "${temp_data}" \
"ls" > "${temp_out}.comm" && \
grep -q "err = ENOENT" "${temp_out}.comm"; then
ls_pid=$(sed -n 's/^ls \[\([0-9][0-9]*\)\].*/\1/p' \
"${temp_out}.comm" | head -n 1)
if [ -n "${ls_pid}" ] && \
perf script failed-syscalls-by-pid -i "${temp_data}" \
"${ls_pid}" > "${temp_out}.pid" && \
grep -q "err = ENOENT" "${temp_out}.pid"; then
passed=1
break
fi
fi
done
if [ ! -s "${temp_data}" ]; then
echo "Skipping test, perf record failed to create data"
exit 2
fi
if [ "$passed" -eq 0 ]; then
echo "failed-syscalls-by-pid test failed."
cat "${temp_out}" 2>/dev/null || true
cat "${temp_out}.comm" 2>/dev/null || true
cat "${temp_out}.pid" 2>/dev/null || true
err=1
else
echo "failed-syscalls-by-pid test passed."
fi
rm -f "${temp_out}" "${temp_out}.comm" "${temp_out}.pid"
}
test_file_mode
exit $err
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