101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
//===-- sanitizer_procmaps.h ------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is shared between AddressSanitizer and ThreadSanitizer.
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//
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// Information about the process mappings.
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//===----------------------------------------------------------------------===//
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#ifndef SANITIZER_PROCMAPS_H
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#define SANITIZER_PROCMAPS_H
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#include "sanitizer_platform.h"
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#if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
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SANITIZER_MAC || SANITIZER_SOLARIS || \
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SANITIZER_FUCHSIA
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#include "sanitizer_common.h"
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#include "sanitizer_internal_defs.h"
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#include "sanitizer_fuchsia.h"
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#include "sanitizer_linux.h"
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#include "sanitizer_mac.h"
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#include "sanitizer_mutex.h"
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namespace __sanitizer {
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// Memory protection masks.
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static const uptr kProtectionRead = 1;
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static const uptr kProtectionWrite = 2;
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static const uptr kProtectionExecute = 4;
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static const uptr kProtectionShared = 8;
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struct MemoryMappedSegmentData;
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class MemoryMappedSegment {
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public:
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explicit MemoryMappedSegment(char *buff = nullptr, uptr size = 0)
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: filename(buff), filename_size(size), data_(nullptr) {}
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~MemoryMappedSegment() {}
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bool IsReadable() const { return protection & kProtectionRead; }
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bool IsWritable() const { return protection & kProtectionWrite; }
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bool IsExecutable() const { return protection & kProtectionExecute; }
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bool IsShared() const { return protection & kProtectionShared; }
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void AddAddressRanges(LoadedModule *module);
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uptr start;
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uptr end;
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uptr offset;
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char *filename; // owned by caller
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uptr filename_size;
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uptr protection;
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ModuleArch arch;
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u8 uuid[kModuleUUIDSize];
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private:
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friend class MemoryMappingLayout;
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// This field is assigned and owned by MemoryMappingLayout if needed
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MemoryMappedSegmentData *data_;
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};
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class MemoryMappingLayout {
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public:
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explicit MemoryMappingLayout(bool cache_enabled);
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~MemoryMappingLayout();
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bool Next(MemoryMappedSegment *segment);
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bool Error() const;
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void Reset();
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// In some cases, e.g. when running under a sandbox on Linux, ASan is unable
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// to obtain the memory mappings. It should fall back to pre-cached data
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// instead of aborting.
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static void CacheMemoryMappings();
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// Adds all mapped objects into a vector.
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void DumpListOfModules(InternalMmapVectorNoCtor<LoadedModule> *modules);
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private:
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void LoadFromCache();
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MemoryMappingLayoutData data_;
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};
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// Returns code range for the specified module.
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bool GetCodeRangeForFile(const char *module, uptr *start, uptr *end);
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bool IsDecimal(char c);
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uptr ParseDecimal(const char **p);
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bool IsHex(char c);
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uptr ParseHex(const char **p);
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} // namespace __sanitizer
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#endif
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#endif // SANITIZER_PROCMAPS_H
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