1 //===- FuzzerFlags.def - Run-time flags -------------------------*- C++ -* ===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // Flags. FUZZER_FLAG_INT/FUZZER_FLAG_STRING macros should be defined at the 10 // point of inclusion. We are not using any flag parsing library for better 11 // portability and independence. 12 //===----------------------------------------------------------------------===// 13 FUZZER_FLAG_INT(verbosity, 1, "Verbosity level.") 14 FUZZER_FLAG_UNSIGNED(seed, 0, "Random seed. If 0, seed is generated.") 15 FUZZER_FLAG_INT(runs, -1, 16 "Number of individual test runs (-1 for infinite runs).") 17 FUZZER_FLAG_INT(max_len, 0, "Maximum length of the test input. " 18 "If 0, libFuzzer tries to guess a good value based on the corpus " 19 "and reports it. ") 20 FUZZER_FLAG_INT(experimental_len_control, 0, "experimental flag") 21 FUZZER_FLAG_INT(cross_over, 1, "If 1, cross over inputs.") 22 FUZZER_FLAG_INT(mutate_depth, 5, 23 "Apply this number of consecutive mutations to each input.") 24 FUZZER_FLAG_INT(shuffle, 1, "Shuffle inputs at startup") 25 FUZZER_FLAG_INT(prefer_small, 1, 26 "If 1, always prefer smaller inputs during the corpus shuffle.") 27 FUZZER_FLAG_INT( 28 timeout, 1200, 29 "Timeout in seconds (if positive). " 30 "If one unit runs more than this number of seconds the process will abort.") 31 FUZZER_FLAG_INT(error_exitcode, 77, "When libFuzzer itself reports a bug " 32 "this exit code will be used.") 33 FUZZER_FLAG_INT(timeout_exitcode, 77, "When libFuzzer reports a timeout " 34 "this exit code will be used.") 35 FUZZER_FLAG_INT(max_total_time, 0, "If positive, indicates the maximal total " 36 "time in seconds to run the fuzzer.") 37 FUZZER_FLAG_INT(help, 0, "Print help.") 38 FUZZER_FLAG_INT(merge, 0, "If 1, the 2-nd, 3-rd, etc corpora will be " 39 "merged into the 1-st corpus. Only interesting units will be taken. " 40 "This flag can be used to minimize a corpus.") 41 FUZZER_FLAG_STRING(merge_control_file, "internal flag") 42 FUZZER_FLAG_STRING(save_coverage_summary, "Experimental:" 43 " save coverage summary to a given file." 44 " Used with -merge=1") 45 FUZZER_FLAG_STRING(load_coverage_summary, "Experimental:" 46 " load coverage summary from a given file." 47 " Treat this coverage as belonging to the first corpus. " 48 " Used with -merge=1") 49 FUZZER_FLAG_INT(minimize_crash, 0, "If 1, minimizes the provided" 50 " crash input. Use with -runs=N or -max_total_time=N to limit " 51 "the number attempts." 52 " Use with -exact_artifact_path to specify the output." 53 " Combine with ASAN_OPTIONS=dedup_token_length=3 (or similar) to ensure that" 54 " the minimized input triggers the same crash." 55 ) 56 FUZZER_FLAG_INT(cleanse_crash, 0, "If 1, tries to cleanse the provided" 57 " crash input to make it contain fewer original bytes." 58 " Use with -exact_artifact_path to specify the output." 59 ) 60 FUZZER_FLAG_INT(minimize_crash_internal_step, 0, "internal flag") 61 FUZZER_FLAG_INT(use_counters, 1, "Use coverage counters") 62 FUZZER_FLAG_INT(use_indir_calls, 1, "Use indirect caller-callee counters") 63 FUZZER_FLAG_INT(use_memmem, 1, 64 "Use hints from intercepting memmem, strstr, etc") 65 FUZZER_FLAG_INT(use_value_profile, 0, 66 "Experimental. Use value profile to guide fuzzing.") 67 FUZZER_FLAG_INT(use_cmp, 1, "Use CMP traces to guide mutations") 68 FUZZER_FLAG_INT(shrink, 0, "Experimental. Try to shrink corpus inputs.") 69 FUZZER_FLAG_INT(reduce_inputs, 1, 70 "Try to reduce the size of inputs while preserving their full feature sets") 71 FUZZER_FLAG_UNSIGNED(jobs, 0, "Number of jobs to run. If jobs >= 1 we spawn" 72 " this number of jobs in separate worker processes" 73 " with stdout/stderr redirected to fuzz-JOB.log.") 74 FUZZER_FLAG_UNSIGNED(workers, 0, 75 "Number of simultaneous worker processes to run the jobs." 76 " If zero, \"min(jobs,NumberOfCpuCores()/2)\" is used.") 77 FUZZER_FLAG_INT(reload, 1, 78 "Reload the main corpus every <N> seconds to get new units" 79 " discovered by other processes. If 0, disabled") 80 FUZZER_FLAG_INT(report_slow_units, 10, 81 "Report slowest units if they run for more than this number of seconds.") 82 FUZZER_FLAG_INT(only_ascii, 0, 83 "If 1, generate only ASCII (isprint+isspace) inputs.") 84 FUZZER_FLAG_STRING(dict, "Experimental. Use the dictionary file.") 85 FUZZER_FLAG_STRING(artifact_prefix, "Write fuzzing artifacts (crash, " 86 "timeout, or slow inputs) as " 87 "$(artifact_prefix)file") 88 FUZZER_FLAG_STRING(exact_artifact_path, 89 "Write the single artifact on failure (crash, timeout) " 90 "as $(exact_artifact_path). This overrides -artifact_prefix " 91 "and will not use checksum in the file name. Do not " 92 "use the same path for several parallel processes.") 93 FUZZER_FLAG_INT(print_pcs, 0, "If 1, print out newly covered PCs.") 94 FUZZER_FLAG_INT(print_funcs, 2, "If >=1, print out at most this number of " 95 "newly covered functions.") 96 FUZZER_FLAG_INT(print_final_stats, 0, "If 1, print statistics at exit.") 97 FUZZER_FLAG_INT(print_corpus_stats, 0, 98 "If 1, print statistics on corpus elements at exit.") 99 FUZZER_FLAG_INT(print_coverage, 0, "If 1, print coverage information as text" 100 " at exit.") 101 FUZZER_FLAG_INT(dump_coverage, 0, "Deprecated." 102 " If 1, dump coverage information as a" 103 " .sancov file at exit.") 104 FUZZER_FLAG_INT(handle_segv, 1, "If 1, try to intercept SIGSEGV.") 105 FUZZER_FLAG_INT(handle_bus, 1, "If 1, try to intercept SIGBUS.") 106 FUZZER_FLAG_INT(handle_abrt, 1, "If 1, try to intercept SIGABRT.") 107 FUZZER_FLAG_INT(handle_ill, 1, "If 1, try to intercept SIGILL.") 108 FUZZER_FLAG_INT(handle_fpe, 1, "If 1, try to intercept SIGFPE.") 109 FUZZER_FLAG_INT(handle_int, 1, "If 1, try to intercept SIGINT.") 110 FUZZER_FLAG_INT(handle_term, 1, "If 1, try to intercept SIGTERM.") 111 FUZZER_FLAG_INT(handle_xfsz, 1, "If 1, try to intercept SIGXFSZ.") 112 FUZZER_FLAG_INT(close_fd_mask, 0, "If 1, close stdout at startup; " 113 "if 2, close stderr; if 3, close both. " 114 "Be careful, this will also close e.g. asan's stderr/stdout.") 115 FUZZER_FLAG_INT(detect_leaks, 1, "If 1, and if LeakSanitizer is enabled " 116 "try to detect memory leaks during fuzzing (i.e. not only at shut down).") 117 FUZZER_FLAG_INT(trace_malloc, 0, "If >= 1 will print all mallocs/frees. " 118 "If >= 2 will also print stack traces.") 119 FUZZER_FLAG_INT(rss_limit_mb, 2048, "If non-zero, the fuzzer will exit upon" 120 "reaching this limit of RSS memory usage.") 121 FUZZER_FLAG_STRING(exit_on_src_pos, "Exit if a newly found PC originates" 122 " from the given source location. Example: -exit_on_src_pos=foo.cc:123. " 123 "Used primarily for testing libFuzzer itself.") 124 FUZZER_FLAG_STRING(exit_on_item, "Exit if an item with a given sha1 sum" 125 " was added to the corpus. " 126 "Used primarily for testing libFuzzer itself.") 127 FUZZER_FLAG_INT(ignore_remaining_args, 0, "If 1, ignore all arguments passed " 128 "after this one. Useful for fuzzers that need to do their own " 129 "argument parsing.") 130 131 FUZZER_FLAG_STRING(run_equivalence_server, "Experimental") 132 FUZZER_FLAG_STRING(use_equivalence_server, "Experimental") 133 FUZZER_FLAG_INT(analyze_dict, 0, "Experimental") 134 FUZZER_FLAG_INT(use_clang_coverage, 0, "Experimental") 135 FUZZER_FLAG_INT(use_feature_frequency, 0, "Experimental/internal") 136 137 FUZZER_DEPRECATED_FLAG(exit_on_first) 138 FUZZER_DEPRECATED_FLAG(save_minimized_corpus) 139 FUZZER_DEPRECATED_FLAG(sync_command) 140 FUZZER_DEPRECATED_FLAG(sync_timeout) 141 FUZZER_DEPRECATED_FLAG(test_single_input) 142 FUZZER_DEPRECATED_FLAG(drill) 143 FUZZER_DEPRECATED_FLAG(truncate_units) 144 FUZZER_DEPRECATED_FLAG(output_csv) 145
