#!/usr/bin/env python # Copyright (c) PLUMgrid, Inc. # Licensed under the Apache License, Version 2.0 (the "License") from bcc import BPF import os import sys from unittest import main, TestCase class TestKprobeRgx(TestCase): def setUp(self): self.b = BPF(text=b""" typedef struct { int idx; } Key; typedef struct { u64 val; } Val; BPF_HASH(stats, Key, Val, 3); int hello(void *ctx) { Val *val = stats.lookup_or_try_init(&(Key){1}, &(Val){0}); if (val) { val->val++; } return 0; } int goodbye(void *ctx) { Val *val = stats.lookup_or_try_init(&(Key){2}, &(Val){0}); if (val) { val->val++; } return 0; } """) self.b.attach_kprobe(event_re=b"^" + self.b.get_syscall_prefix() + b"bp.*", fn_name=b"hello") self.b.attach_kretprobe(event_re=b"^" + self.b.get_syscall_prefix() + b"bp.*", fn_name=b"goodbye") def test_send1(self): k1 = self.b[b"stats"].Key(1) k2 = self.b[b"stats"].Key(2) self.assertTrue(self.b[b"stats"][k1].val >= 2) self.assertTrue(self.b[b"stats"][k2].val == 1) class TestKprobeReplace(TestCase): def setUp(self): self.b = BPF(text=b"int empty(void *ctx) { return 0; }") def test_periods(self): self.b.attach_kprobe(event_re=b"^tcp_enter_cwr.*", fn_name=b"empty") if __name__ == "__main__": main()