| #!/usr/bin/env python3 |
| # |
| # USAGE: test_uprobe2.py |
| # |
| # Copyright 2020 Facebook, Inc |
| # Licensed under the Apache License, Version 2.0 (the "License") |
| |
| from bcc import BPF |
| from unittest import main, TestCase |
| from subprocess import Popen, PIPE |
| from tempfile import NamedTemporaryFile |
| |
| |
| class TestUprobes(TestCase): |
| def setUp(self): |
| lib_text = b""" |
| __attribute__((__visibility__("default"))) void fun() |
| { |
| } |
| """ |
| self.bpf_text = b""" |
| int trace_fun_call(void *ctx) {{ |
| return 1; |
| }} |
| """ |
| # Compile and run the application |
| self.ftemp = NamedTemporaryFile(delete=False) |
| self.ftemp.close() |
| comp = Popen([ |
| "gcc", |
| "-x", "c", |
| "-shared", |
| "-Wl,-Ttext-segment,0x2000000", |
| "-o", self.ftemp.name, |
| "-" |
| ], stdin=PIPE) |
| comp.stdin.write(lib_text) |
| comp.stdin.close() |
| self.assertEqual(comp.wait(), 0) |
| |
| def test_attach1(self): |
| b = BPF(text=self.bpf_text) |
| b.attach_uprobe(name=self.ftemp.name.encode(), sym=b"fun", fn_name=b"trace_fun_call") |
| |
| |
| if __name__ == "__main__": |
| main() |
