1#!/usr/bin/env python3 2# 3# USAGE: test_uprobe2.py 4# 5# Copyright 2020 Facebook, Inc 6# Licensed under the Apache License, Version 2.0 (the "License") 7 8from bcc import BPF 9from unittest import main, TestCase 10from subprocess import Popen, PIPE 11from tempfile import NamedTemporaryFile 12 13 14class TestUprobes(TestCase): 15 def setUp(self): 16 lib_text = b""" 17__attribute__((__visibility__("default"))) void fun() 18{ 19} 20""" 21 self.bpf_text = """ 22int trace_fun_call(void *ctx) {{ 23 return 1; 24}} 25""" 26 # Compile and run the application 27 self.ftemp = NamedTemporaryFile(delete=False) 28 self.ftemp.close() 29 comp = Popen([ 30 "gcc", 31 "-x", "c", 32 "-shared", 33 "-Wl,-Ttext-segment,0x2000000", 34 "-o", self.ftemp.name, 35 "-" 36 ], stdin=PIPE) 37 comp.stdin.write(lib_text) 38 comp.stdin.close() 39 self.assertEqual(comp.wait(), 0) 40 41 def test_attach1(self): 42 b = BPF(text=self.bpf_text) 43 b.attach_uprobe(name=self.ftemp.name, sym="fun", fn_name="trace_fun_call") 44 45 46if __name__ == "__main__": 47 main() 48