1//===-- sanitizer_dl.cpp --------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file has helper functions that depend on libc's dynamic loading
10// introspection.
11//
12//===----------------------------------------------------------------------===//
13
14#include "sanitizer_dl.h"
15
16#include "sanitizer_common/sanitizer_platform.h"
17
18#if SANITIZER_GLIBC
19# include <dlfcn.h>
20#endif
21
22namespace __sanitizer {
23extern const char *SanitizerToolName;
24
25const char *DladdrSelfFName(void) {
26#if SANITIZER_GLIBC
27 Dl_info info;
28 int ret = dladdr(address: (void *)&SanitizerToolName, info: &info);
29 if (ret) {
30 return info.dli_fname;
31 }
32#endif
33
34 return nullptr;
35}
36
37} // namespace __sanitizer
38