libsanitizer/sanitizer_common/sanitizer_dl.cpp

   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
  22 namespace __sanitizer {
  23 extern const char *SanitizerToolName;
  24
  25 const char *DladdrSelfFName(void) {
  26 #if SANITIZER_GLIBC
  27   Dl_info info;
  28   int ret = dladdr((void *)&SanitizerToolName, &info);
  29   if (ret) {
  30     return info.dli_fname;
  31   }
  32 #endif
  33
  34   return nullptr;
  35 }
  36
  37 }  // namespace __sanitizer