Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 1 | //===-- sanitizer_flags.h ---------------------------------------*- 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 | // |
| 10 | // This file describes common flags available in all sanitizers. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | #ifndef COMMON_FLAG |
| 14 | #error "Define COMMON_FLAG prior to including this file!" |
| 15 | #endif |
| 16 | |
| 17 | // COMMON_FLAG(Type, Name, DefaultValue, Description) |
| 18 | // Supported types: bool, const char *, int, uptr. |
| 19 | // Default value must be a compile-time constant. |
| 20 | // Description must be a string literal. |
| 21 | |
| 22 | COMMON_FLAG( |
| 23 | bool, symbolize, true, |
| 24 | "If set, use the online symbolizer from common sanitizer runtime to turn " |
| 25 | "virtual addresses to file/line locations.") |
| 26 | COMMON_FLAG( |
| 27 | const char *, external_symbolizer_path, 0, |
| 28 | "Path to external symbolizer. If empty, the tool will search $PATH for " |
| 29 | "the symbolizer.") |
| 30 | COMMON_FLAG( |
| 31 | bool, allow_addr2line, false, |
| 32 | "If set, allows online symbolizer to run addr2line binary to symbolize " |
| 33 | "stack traces (addr2line will only be used if llvm-symbolizer binary is " |
| 34 | "unavailable.") |
| 35 | COMMON_FLAG(const char *, strip_path_prefix, "", |
| 36 | "Strips this prefix from file paths in error reports.") |
| 37 | COMMON_FLAG(bool, fast_unwind_on_check, false, |
| 38 | "If available, use the fast frame-pointer-based unwinder on " |
| 39 | "internal CHECK failures.") |
| 40 | COMMON_FLAG(bool, fast_unwind_on_fatal, false, |
| 41 | "If available, use the fast frame-pointer-based unwinder on fatal " |
| 42 | "errors.") |
| 43 | COMMON_FLAG(bool, fast_unwind_on_malloc, true, |
| 44 | "If available, use the fast frame-pointer-based unwinder on " |
| 45 | "malloc/free.") |
| 46 | COMMON_FLAG(bool, handle_ioctl, false, "Intercept and handle ioctl requests.") |
| 47 | COMMON_FLAG(int, malloc_context_size, 1, |
| 48 | "Max number of stack frames kept for each allocation/deallocation.") |
| 49 | COMMON_FLAG( |
| 50 | const char *, log_path, "stderr", |
| 51 | "Write logs to \"log_path.pid\". The special values are \"stdout\" and " |
| 52 | "\"stderr\". The default is \"stderr\".") |
| 53 | COMMON_FLAG( |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 54 | bool, log_exe_name, false, |
| 55 | "Mention name of executable when reporting error and " |
| 56 | "append executable name to logs (as in \"log_path.exe_name.pid\").") |
| 57 | COMMON_FLAG( |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 58 | int, verbosity, 0, |
| 59 | "Verbosity level (0 - silent, 1 - a bit of output, 2+ - more output).") |
| 60 | COMMON_FLAG(bool, detect_leaks, true, "Enable memory leak detection.") |
| 61 | COMMON_FLAG( |
| 62 | bool, leak_check_at_exit, true, |
| 63 | "Invoke leak checking in an atexit handler. Has no effect if " |
| 64 | "detect_leaks=false, or if __lsan_do_leak_check() is called before the " |
| 65 | "handler has a chance to run.") |
| 66 | COMMON_FLAG(bool, allocator_may_return_null, false, |
| 67 | "If false, the allocator will crash instead of returning 0 on " |
| 68 | "out-of-memory.") |
| 69 | COMMON_FLAG(bool, print_summary, true, |
| 70 | "If false, disable printing error summaries in addition to error " |
| 71 | "reports.") |
| 72 | COMMON_FLAG(bool, check_printf, true, "Check printf arguments.") |
| 73 | COMMON_FLAG(bool, handle_segv, SANITIZER_NEEDS_SEGV, |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 74 | "If set, registers the tool's custom SIGSEGV/SIGBUS handler.") |
| 75 | COMMON_FLAG(bool, handle_abort, false, |
| 76 | "If set, registers the tool's custom SIGABRT handler.") |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 77 | COMMON_FLAG(bool, allow_user_segv_handler, false, |
| 78 | "If set, allows user to register a SEGV handler even if the tool " |
| 79 | "registers one.") |
| 80 | COMMON_FLAG(bool, use_sigaltstack, true, |
| 81 | "If set, uses alternate stack for signal handling.") |
| 82 | COMMON_FLAG(bool, detect_deadlocks, false, |
| 83 | "If set, deadlock detection is enabled.") |
| 84 | COMMON_FLAG( |
| 85 | uptr, clear_shadow_mmap_threshold, 64 * 1024, |
| 86 | "Large shadow regions are zero-filled using mmap(NORESERVE) instead of " |
| 87 | "memset(). This is the threshold size in bytes.") |
| 88 | COMMON_FLAG(const char *, color, "auto", |
| 89 | "Colorize reports: (always|never|auto).") |
| 90 | COMMON_FLAG( |
| 91 | bool, legacy_pthread_cond, false, |
| 92 | "Enables support for dynamic libraries linked with libpthread 2.2.5.") |
| 93 | COMMON_FLAG(bool, intercept_tls_get_addr, false, "Intercept __tls_get_addr.") |
| 94 | COMMON_FLAG(bool, help, false, "Print the flag descriptions.") |
| 95 | COMMON_FLAG(uptr, mmap_limit_mb, 0, |
| 96 | "Limit the amount of mmap-ed memory (excluding shadow) in Mb; " |
| 97 | "not a user-facing flag, used mosly for testing the tools") |
| 98 | COMMON_FLAG(uptr, hard_rss_limit_mb, 0, |
| 99 | "Hard RSS limit in Mb." |
| 100 | " If non-zero, a background thread is spawned at startup" |
| 101 | " which periodically reads RSS and aborts the process if the" |
| 102 | " limit is reached") |
| 103 | COMMON_FLAG(uptr, soft_rss_limit_mb, 0, |
| 104 | "Soft RSS limit in Mb." |
| 105 | " If non-zero, a background thread is spawned at startup" |
| 106 | " which periodically reads RSS. If the limit is reached" |
| 107 | " all subsequent malloc/new calls will fail or return NULL" |
| 108 | " (depending on the value of allocator_may_return_null)" |
| 109 | " until the RSS goes below the soft limit." |
| 110 | " This limit does not affect memory allocations other than" |
| 111 | " malloc/new.") |
| 112 | COMMON_FLAG(bool, can_use_proc_maps_statm, true, |
| 113 | "If false, do not attempt to read /proc/maps/statm." |
| 114 | " Mostly useful for testing sanitizers.") |
| 115 | COMMON_FLAG( |
| 116 | bool, coverage, false, |
| 117 | "If set, coverage information will be dumped at program shutdown (if the " |
| 118 | "coverage instrumentation was enabled at compile time).") |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 119 | COMMON_FLAG(bool, coverage_pcs, true, |
| 120 | "If set (and if 'coverage' is set too), the coverage information " |
| 121 | "will be dumped as a set of PC offsets for every module.") |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 122 | COMMON_FLAG(bool, coverage_order_pcs, false, |
| 123 | "If true, the PCs will be dumped in the order they've" |
| 124 | " appeared during the execution.") |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 125 | COMMON_FLAG(bool, coverage_bitset, false, |
| 126 | "If set (and if 'coverage' is set too), the coverage information " |
| 127 | "will also be dumped as a bitset to a separate file.") |
Pirama Arumuga Nainar | 7c91505 | 2015-04-08 08:58:29 -0700 | [diff] [blame] | 128 | COMMON_FLAG(bool, coverage_counters, false, |
| 129 | "If set (and if 'coverage' is set too), the bitmap that corresponds" |
| 130 | " to coverage counters will be dumped.") |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 131 | COMMON_FLAG(bool, coverage_direct, SANITIZER_ANDROID, |
| 132 | "If set, coverage information will be dumped directly to a memory " |
| 133 | "mapped file. This way data is not lost even if the process is " |
| 134 | "suddenly killed.") |
| 135 | COMMON_FLAG(const char *, coverage_dir, ".", |
| 136 | "Target directory for coverage dumps. Defaults to the current " |
| 137 | "directory.") |
| 138 | COMMON_FLAG(bool, full_address_space, false, |
| 139 | "Sanitize complete address space; " |
| 140 | "by default kernel area on 32-bit platforms will not be sanitized") |
| 141 | COMMON_FLAG(bool, print_suppressions, true, |
| 142 | "Print matched suppressions at exit.") |
| 143 | COMMON_FLAG( |
| 144 | bool, disable_coredump, (SANITIZER_WORDSIZE == 64), |
| 145 | "Disable core dumping. By default, disable_core=1 on 64-bit to avoid " |
| 146 | "dumping a 16T+ core file. Ignored on OSes that don't dump core by" |
| 147 | "default and for sanitizers that don't reserve lots of virtual memory.") |
| 148 | COMMON_FLAG(bool, use_madv_dontdump, true, |
| 149 | "If set, instructs kernel to not store the (huge) shadow " |
| 150 | "in core file.") |
| 151 | COMMON_FLAG(bool, symbolize_inline_frames, true, |
| 152 | "Print inlined frames in stacktraces. Defaults to true.") |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 153 | COMMON_FLAG(bool, symbolize_vs_style, false, |
| 154 | "Print file locations in Visual Studio style (e.g: " |
| 155 | " file(10,42): ...") |
Stephen Hines | 86277eb | 2015-03-23 12:06:32 -0700 | [diff] [blame] | 156 | COMMON_FLAG(const char *, stack_trace_format, "DEFAULT", |
| 157 | "Format string used to render stack frames. " |
| 158 | "See sanitizer_stacktrace_printer.h for the format description. " |
| 159 | "Use DEFAULT to get default format.") |
| 160 | COMMON_FLAG(bool, no_huge_pages_for_shadow, true, |
| 161 | "If true, the shadow is not allowed to use huge pages. ") |
Pirama Arumuga Nainar | 259f706 | 2015-05-06 11:49:53 -0700 | [diff] [blame] | 162 | COMMON_FLAG(bool, strict_string_checks, false, |
| 163 | "If set check that string arguments are properly null-terminated") |
Pirama Arumuga Nainar | cdce50b | 2015-07-01 12:26:56 -0700 | [diff] [blame] | 164 | COMMON_FLAG(bool, intercept_strstr, true, |
| 165 | "If set, uses custom wrappers for strstr and strcasestr functions " |
| 166 | "to find more errors.") |
| 167 | COMMON_FLAG(bool, intercept_strspn, true, |
| 168 | "If set, uses custom wrappers for strspn and strcspn function " |
| 169 | "to find more errors.") |
| 170 | COMMON_FLAG(bool, intercept_strpbrk, true, |
| 171 | "If set, uses custom wrappers for strpbrk function " |
| 172 | "to find more errors.") |
| 173 | COMMON_FLAG(bool, decorate_proc_maps, false, "If set, decorate sanitizer " |
| 174 | "mappings in /proc/self/maps with " |
| 175 | "user-readable names") |