Alexey Samsonov | 7ed1d2b | 2012-07-10 07:41:27 +0000 | [diff] [blame] | 1 | //===-- asan_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 is a part of AddressSanitizer, an address sanity checker. |
| 11 | // |
| 12 | // ASan runtime flags. |
| 13 | //===----------------------------------------------------------------------===// |
| 14 | |
| 15 | #ifndef ASAN_FLAGS_H |
| 16 | #define ASAN_FLAGS_H |
| 17 | |
| 18 | #include "sanitizer_common/sanitizer_interface_defs.h" |
| 19 | |
| 20 | // ASan flag values can be defined in three ways: |
| 21 | // 1) initialized with default values at startup. |
Alexey Samsonov | b750c4c | 2012-07-25 10:40:57 +0000 | [diff] [blame] | 22 | // 2) overriden from string returned by user-specified function |
| 23 | // __asan_default_options(). |
Alexey Samsonov | 7ed1d2b | 2012-07-10 07:41:27 +0000 | [diff] [blame] | 24 | // 3) overriden from env variable ASAN_OPTIONS. |
| 25 | |
Alexey Samsonov | 7ed1d2b | 2012-07-10 07:41:27 +0000 | [diff] [blame] | 26 | namespace __asan { |
| 27 | |
| 28 | struct Flags { |
| 29 | // Size (in bytes) of quarantine used to detect use-after-free errors. |
| 30 | // Lower value may reduce memory usage but increase the chance of |
| 31 | // false negatives. |
| 32 | int quarantine_size; |
| 33 | // If set, uses in-process symbolizer from common sanitizer runtime. |
| 34 | bool symbolize; |
| 35 | // Verbosity level (0 - silent, 1 - a bit of output, 2+ - more output). |
| 36 | int verbosity; |
| 37 | // Size (in bytes) of redzones around heap objects. |
| 38 | // Requirement: redzone >= 32, is a power of two. |
| 39 | int redzone; |
| 40 | // If set, prints some debugging information and does additional checks. |
| 41 | bool debug; |
| 42 | // Controls the way to handle globals (0 - don't detect buffer overflow |
| 43 | // on globals, 1 - detect buffer overflow, 2 - print data about registered |
| 44 | // globals). |
| 45 | int report_globals; |
Kostya Serebryany | 3945c58 | 2012-08-21 14:10:25 +0000 | [diff] [blame^] | 46 | // If set, attempts to catch initialization order issues. |
| 47 | bool check_initialization_order; |
Alexey Samsonov | 7ed1d2b | 2012-07-10 07:41:27 +0000 | [diff] [blame] | 48 | // Max number of stack frames kept for each allocation. |
| 49 | int malloc_context_size; |
| 50 | // If set, uses custom wrappers and replacements for libc string functions |
| 51 | // to find more errors. |
| 52 | bool replace_str; |
| 53 | // If set, uses custom wrappers for memset/memcpy/memmove intinsics. |
| 54 | bool replace_intrin; |
| 55 | // Used on Mac only. See comments in asan_mac.cc and asan_malloc_mac.cc. |
| 56 | bool replace_cfallocator; |
| 57 | // Used on Mac only. |
| 58 | bool mac_ignore_invalid_free; |
| 59 | // ASan allocator flag. See asan_allocator.cc. |
| 60 | bool use_fake_stack; |
| 61 | // ASan allocator flag. Sets the maximal size of allocation request |
| 62 | // that would return memory filled with zero bytes. |
| 63 | int max_malloc_fill_size; |
| 64 | // Override exit status if something was reported. |
| 65 | int exitcode; |
| 66 | // If set, user may manually mark memory regions as poisoned or unpoisoned. |
| 67 | bool allow_user_poisoning; |
| 68 | // Number of seconds to sleep between printing an error report and |
| 69 | // terminating application. Useful for debug purposes (when one needs |
| 70 | // to attach gdb, for example). |
| 71 | int sleep_before_dying; |
| 72 | // If set, registers ASan custom segv handler. |
| 73 | bool handle_segv; |
| 74 | // If set, uses alternate stack for signal handling. |
| 75 | bool use_sigaltstack; |
| 76 | // Allow the users to work around the bug in Nvidia drivers prior to 295.*. |
| 77 | bool check_malloc_usable_size; |
| 78 | // If set, explicitly unmaps (huge) shadow at exit. |
| 79 | bool unmap_shadow_on_exit; |
| 80 | // If set, calls abort() instead of _exit() after printing an error report. |
| 81 | bool abort_on_error; |
| 82 | // If set, prints ASan exit stats even after program terminates successfully. |
| 83 | bool atexit; |
| 84 | // By default, disable core dumper on 64-bit - it makes little sense |
| 85 | // to dump 16T+ core. |
| 86 | bool disable_core; |
Alexey Samsonov | 4e21c6b | 2012-08-06 13:00:21 +0000 | [diff] [blame] | 87 | // Strips this prefix from file paths in error reports. |
| 88 | const char *strip_path_prefix; |
Alexey Samsonov | 7ed1d2b | 2012-07-10 07:41:27 +0000 | [diff] [blame] | 89 | }; |
Alexander Potapenko | 8a1dd56 | 2012-07-25 09:18:43 +0000 | [diff] [blame] | 90 | |
Alexey Samsonov | 7ed1d2b | 2012-07-10 07:41:27 +0000 | [diff] [blame] | 91 | Flags *flags(); |
| 92 | void InitializeFlags(Flags *f, const char *env); |
| 93 | |
| 94 | } // namespace __asan |
| 95 | |
| 96 | #endif // ASAN_FLAGS_H |