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llvm / libfuzzer / 3b299e3d26255e1c0830d94dba39d787a706b44f
commit3b299e3d26255e1c0830d94dba39d787a706b44f[log] [tgz]
authorMatt Morehouse <mascasa@google.com>Wed Aug 26 09:06:12 2020 -0700
committerCopybara-Service <copybara-worker@google.com>Thu Mar 25 23:21:18 2021 -0700
tree8c439d2f8854a45fa13f3ba5eccb23f6894087ea
parent61bd8664065ebe0ecd9162cd7e8691d679257e78 [diff]
[libFuzzer] Error and exit if user supplied fuzzer writeable directories don't exist

Currently, libFuzzer will exit with an error message if a non-existent
corpus directory is provided. However, if a user provides a non-existent
directory for the `artifact_prefix`, `exact_artifact_path`, or
`features_dir`, libFuzzer will continue execution but silently fail to
write artifacts/features.

To improve the user experience, this PR adds validation for the existence of
all user supplied directories before executing the main fuzzing loop. If they
don't exist, libFuzzer will exit with an error message.

Patch By: dgg5503

Reviewed By: morehouse

Differential Revision: https://reviews.llvm.org/D84808

GitOrigin-RevId: 2392ff093af128d5e46ce31e2ffa0b3e17185e32
4 files changed
tree: 8c439d2f8854a45fa13f3ba5eccb23f6894087ea
  1. afl/
  2. dataflow/
  3. scripts/
  4. standalone/
  5. tests/
  6. build.sh
  7. FuzzedDataProvider.h
  8. FuzzerBuiltins.h
  9. FuzzerBuiltinsMsvc.h
  10. FuzzerCommand.h
  11. FuzzerCorpus.h
  12. FuzzerCrossOver.cpp
  13. FuzzerDataFlowTrace.cpp
  14. FuzzerDataFlowTrace.h
  15. FuzzerDefs.h
  16. FuzzerDictionary.h
  17. FuzzerDriver.cpp
  18. FuzzerExtFunctions.def
  19. FuzzerExtFunctions.h
  20. FuzzerExtFunctionsDlsym.cpp
  21. FuzzerExtFunctionsWeak.cpp
  22. FuzzerExtFunctionsWindows.cpp
  23. FuzzerExtraCounters.cpp
  24. FuzzerFlags.def
  25. FuzzerFork.cpp
  26. FuzzerFork.h
  27. FuzzerInterceptors.cpp
  28. FuzzerInterface.h
  29. FuzzerInternal.h
  30. FuzzerIO.cpp
  31. FuzzerIO.h
  32. FuzzerIOPosix.cpp
  33. FuzzerIOWindows.cpp
  34. FuzzerLoop.cpp
  35. FuzzerMain.cpp
  36. FuzzerMerge.cpp
  37. FuzzerMerge.h
  38. FuzzerMutate.cpp
  39. FuzzerMutate.h
  40. FuzzerOptions.h
  41. FuzzerPlatform.h
  42. FuzzerRandom.h
  43. FuzzerSHA1.cpp
  44. FuzzerSHA1.h
  45. FuzzerTracePC.cpp
  46. FuzzerTracePC.h
  47. FuzzerUtil.cpp
  48. FuzzerUtil.h
  49. FuzzerUtilDarwin.cpp
  50. FuzzerUtilFuchsia.cpp
  51. FuzzerUtilLinux.cpp
  52. FuzzerUtilPosix.cpp
  53. FuzzerUtilWindows.cpp
  54. FuzzerValueBitMap.h
  55. LICENSE.TXT
  56. README.txt