1 //===-- asan_suppressions.cc ----------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file is a part of AddressSanitizer, an address sanity checker.
12 // Issue suppression and suppression-related functions.
13 //===----------------------------------------------------------------------===//
15 #include "asan_suppressions.h"
17 #include "asan_stack.h"
18 #include "sanitizer_common/sanitizer_suppressions.h"
19 #include "sanitizer_common/sanitizer_symbolizer.h"
23 static bool suppressions_inited = false;
25 void InitializeSuppressions() {
26 CHECK(!suppressions_inited);
27 SuppressionContext::InitIfNecessary();
28 suppressions_inited = true;
31 bool IsInterceptorSuppressed(const char *interceptor_name) {
32 CHECK(suppressions_inited);
33 SuppressionContext *ctx = SuppressionContext::Get();
35 // Match "interceptor_name" suppressions.
36 return ctx->Match(interceptor_name, SuppressionInterceptorName, &s);
39 bool HaveStackTraceBasedSuppressions() {
40 CHECK(suppressions_inited);
41 SuppressionContext *ctx = SuppressionContext::Get();
42 return ctx->HasSuppressionType(SuppressionInterceptorViaFunction) ||
43 ctx->HasSuppressionType(SuppressionInterceptorViaLibrary);
46 bool IsStackTraceSuppressed(const StackTrace *stack) {
47 CHECK(suppressions_inited);
48 if (!HaveStackTraceBasedSuppressions())
51 SuppressionContext *ctx = SuppressionContext::Get();
52 Symbolizer *symbolizer = Symbolizer::GetOrInit();
54 for (uptr i = 0; i < stack->size && stack->trace[i]; i++) {
55 uptr addr = stack->trace[i];
57 if (ctx->HasSuppressionType(SuppressionInterceptorViaLibrary)) {
58 const char *module_name;
60 // Match "interceptor_via_lib" suppressions.
61 if (symbolizer->GetModuleNameAndOffsetForPC(addr, &module_name,
63 ctx->Match(module_name, SuppressionInterceptorViaLibrary, &s)) {
68 if (ctx->HasSuppressionType(SuppressionInterceptorViaFunction)) {
69 SymbolizedStack *frames = symbolizer->SymbolizePC(addr);
70 for (SymbolizedStack *cur = frames; cur; cur = cur->next) {
71 const char *function_name = cur->info.function;
75 // Match "interceptor_via_fun" suppressions.
76 if (ctx->Match(function_name, SuppressionInterceptorViaFunction, &s)) {