//===- FuzzerFlags.def - Run-time flags -------------------------*- C++ -* ===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // Flags. FUZZER_FLAG_INT/FUZZER_FLAG_STRING macros should be defined at the // point of inclusion. We are not using any flag parsing library for better // portability and independence. //===----------------------------------------------------------------------===// FUZZER_FLAG_INT(verbosity, 1, "Verbosity level.") FUZZER_FLAG_UNSIGNED(seed, 0, "Random seed. If 0, seed is generated.") FUZZER_FLAG_INT(runs, -1, "Number of individual test runs (-1 for infinite runs).") FUZZER_FLAG_INT(max_len, 0, "Maximum length of the test input. " "If 0, libFuzzer tries to guess a good value based on the corpus " "and reports it. ") FUZZER_FLAG_INT(len_control, 1000, "Try generating small inputs first, " "then try larger inputs over time. Specifies the rate at which the length " "limit is increased (smaller == faster). If 0, immediately try inputs with " "size up to max_len.") FUZZER_FLAG_INT(cross_over, 1, "If 1, cross over inputs.") FUZZER_FLAG_INT(mutate_depth, 5, "Apply this number of consecutive mutations to each input.") FUZZER_FLAG_INT(reduce_depth, 0, "Experimental/internal. " "Reduce depth if mutations lose unique features") FUZZER_FLAG_INT(shuffle, 1, "Shuffle inputs at startup") FUZZER_FLAG_INT(prefer_small, 1, "If 1, always prefer smaller inputs during the corpus shuffle.") FUZZER_FLAG_INT( timeout, 1200, "Timeout in seconds (if positive). " "If one unit runs more than this number of seconds the process will abort.") FUZZER_FLAG_INT(error_exitcode, 77, "When libFuzzer itself reports a bug " "this exit code will be used.") FUZZER_FLAG_INT(timeout_exitcode, 77, "When libFuzzer reports a timeout " "this exit code will be used.") FUZZER_FLAG_INT(max_total_time, 0, "If positive, indicates the maximal total " "time in seconds to run the fuzzer.") FUZZER_FLAG_INT(help, 0, "Print help.") FUZZER_FLAG_INT(merge, 0, "If 1, the 2-nd, 3-rd, etc corpora will be " "merged into the 1-st corpus. Only interesting units will be taken. " "This flag can be used to minimize a corpus.") FUZZER_FLAG_STRING(merge_inner, "internal flag") FUZZER_FLAG_STRING(merge_control_file, "Specify a control file used for the merge process. " "If a merge process gets killed it tries to leave this file " "in a state suitable for resuming the merge. " "By default a temporary file will be used.") FUZZER_FLAG_STRING(save_coverage_summary, "Experimental:" " save coverage summary to a given file." " Used with -merge=1") FUZZER_FLAG_STRING(load_coverage_summary, "Experimental:" " load coverage summary from a given file." " Treat this coverage as belonging to the first corpus. " " Used with -merge=1") FUZZER_FLAG_INT(minimize_crash, 0, "If 1, minimizes the provided" " crash input. Use with -runs=N or -max_total_time=N to limit " "the number attempts." " Use with -exact_artifact_path to specify the output." " Combine with ASAN_OPTIONS=dedup_token_length=3 (or similar) to ensure that" " the minimized input triggers the same crash." ) FUZZER_FLAG_INT(cleanse_crash, 0, "If 1, tries to cleanse the provided" " crash input to make it contain fewer original bytes." " Use with -exact_artifact_path to specify the output." ) FUZZER_FLAG_INT(minimize_crash_internal_step, 0, "internal flag") FUZZER_FLAG_INT(use_counters, 1, "Use coverage counters") FUZZER_FLAG_INT(use_memmem, 1, "Use hints from intercepting memmem, strstr, etc") FUZZER_FLAG_INT(use_value_profile, 0, "Experimental. Use value profile to guide fuzzing.") FUZZER_FLAG_INT(use_cmp, 1, "Use CMP traces to guide mutations") FUZZER_FLAG_INT(shrink, 0, "Experimental. Try to shrink corpus inputs.") FUZZER_FLAG_INT(reduce_inputs, 1, "Try to reduce the size of inputs while preserving their full feature sets") FUZZER_FLAG_UNSIGNED(jobs, 0, "Number of jobs to run. If jobs >= 1 we spawn" " this number of jobs in separate worker processes" " with stdout/stderr redirected to fuzz-JOB.log.") FUZZER_FLAG_UNSIGNED(workers, 0, "Number of simultaneous worker processes to run the jobs." " If zero, \"min(jobs,NumberOfCpuCores()/2)\" is used.") FUZZER_FLAG_INT(reload, 1, "Reload the main corpus every seconds to get new units" " discovered by other processes. If 0, disabled") FUZZER_FLAG_INT(report_slow_units, 10, "Report slowest units if they run for more than this number of seconds.") FUZZER_FLAG_INT(only_ascii, 0, "If 1, generate only ASCII (isprint+isspace) inputs.") FUZZER_FLAG_STRING(dict, "Experimental. Use the dictionary file.") FUZZER_FLAG_STRING(artifact_prefix, "Write fuzzing artifacts (crash, " "timeout, or slow inputs) as " "$(artifact_prefix)file") FUZZER_FLAG_STRING(exact_artifact_path, "Write the single artifact on failure (crash, timeout) " "as $(exact_artifact_path). This overrides -artifact_prefix " "and will not use checksum in the file name. Do not " "use the same path for several parallel processes.") FUZZER_FLAG_INT(print_pcs, 0, "If 1, print out newly covered PCs.") FUZZER_FLAG_INT(print_funcs, 2, "If >=1, print out at most this number of " "newly covered functions.") FUZZER_FLAG_INT(print_final_stats, 0, "If 1, print statistics at exit.") FUZZER_FLAG_INT(print_corpus_stats, 0, "If 1, print statistics on corpus elements at exit.") FUZZER_FLAG_INT(print_coverage, 0, "If 1, print coverage information as text" " at exit.") FUZZER_FLAG_INT(dump_coverage, 0, "Deprecated." " If 1, dump coverage information as a" " .sancov file at exit.") FUZZER_FLAG_INT(handle_unstable, 0, "Experimental." " Executes every input 3 times in total if a unique feature" " is found during the first execution." " If 1, we only use the minimum hit count from the 3 runs" " to determine whether an input is interesting.") FUZZER_FLAG_INT(print_unstable_stats, 0, "Experimental." " If 1, print unstable statistics at exit.") FUZZER_FLAG_INT(handle_segv, 1, "If 1, try to intercept SIGSEGV.") FUZZER_FLAG_INT(handle_bus, 1, "If 1, try to intercept SIGBUS.") FUZZER_FLAG_INT(handle_abrt, 1, "If 1, try to intercept SIGABRT.") FUZZER_FLAG_INT(handle_ill, 1, "If 1, try to intercept SIGILL.") FUZZER_FLAG_INT(handle_fpe, 1, "If 1, try to intercept SIGFPE.") FUZZER_FLAG_INT(handle_int, 1, "If 1, try to intercept SIGINT.") FUZZER_FLAG_INT(handle_term, 1, "If 1, try to intercept SIGTERM.") FUZZER_FLAG_INT(handle_xfsz, 1, "If 1, try to intercept SIGXFSZ.") FUZZER_FLAG_INT(handle_usr1, 1, "If 1, try to intercept SIGUSR1.") FUZZER_FLAG_INT(handle_usr2, 1, "If 1, try to intercept SIGUSR2.") FUZZER_FLAG_INT(close_fd_mask, 0, "If 1, close stdout at startup; " "if 2, close stderr; if 3, close both. " "Be careful, this will also close e.g. stderr of asan.") FUZZER_FLAG_INT(detect_leaks, 1, "If 1, and if LeakSanitizer is enabled " "try to detect memory leaks during fuzzing (i.e. not only at shut down).") FUZZER_FLAG_INT(purge_allocator_interval, 1, "Purge allocator caches and " "quarantines every seconds. When rss_limit_mb is specified (>0), " "purging starts when RSS exceeds 50% of rss_limit_mb. Pass " "purge_allocator_interval=-1 to disable this functionality.") FUZZER_FLAG_INT(trace_malloc, 0, "If >= 1 will print all mallocs/frees. " "If >= 2 will also print stack traces.") FUZZER_FLAG_INT(rss_limit_mb, 2048, "If non-zero, the fuzzer will exit upon" "reaching this limit of RSS memory usage.") FUZZER_FLAG_INT(malloc_limit_mb, 0, "If non-zero, the fuzzer will exit " "if the target tries to allocate this number of Mb with one malloc call. " "If zero (default) same limit as rss_limit_mb is applied.") FUZZER_FLAG_STRING(exit_on_src_pos, "Exit if a newly found PC originates" " from the given source location. Example: -exit_on_src_pos=foo.cc:123. " "Used primarily for testing libFuzzer itself.") FUZZER_FLAG_STRING(exit_on_item, "Exit if an item with a given sha1 sum" " was added to the corpus. " "Used primarily for testing libFuzzer itself.") FUZZER_FLAG_INT(ignore_remaining_args, 0, "If 1, ignore all arguments passed " "after this one. Useful for fuzzers that need to do their own " "argument parsing.") FUZZER_FLAG_STRING(focus_function, "Experimental. " "Fuzzing will focus on inputs that trigger calls to this function") FUZZER_DEPRECATED_FLAG(run_equivalence_server) FUZZER_DEPRECATED_FLAG(use_equivalence_server) FUZZER_FLAG_INT(analyze_dict, 0, "Experimental") FUZZER_DEPRECATED_FLAG(use_clang_coverage) FUZZER_FLAG_STRING(data_flow_trace, "Experimental: use the data flow trace") FUZZER_FLAG_INT(print_mutation_stats, 0, "Experimental")