| 1 | //===--- NoSanitizeList.cpp - Ignored list for sanitizers ----------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // User-provided ignore-list used to disable/alter instrumentation done in |
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| 10 | // sanitizers. |
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| 11 | // |
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| 12 | //===----------------------------------------------------------------------===// |
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| 13 | |
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| 14 | #include "clang/Basic/NoSanitizeList.h" |
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| 15 | #include "clang/Basic/FileManager.h" |
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| 16 | #include "clang/Basic/SanitizerSpecialCaseList.h" |
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| 17 | #include "clang/Basic/Sanitizers.h" |
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| 18 | #include "clang/Basic/SourceManager.h" |
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| 19 | |
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| 20 | using namespace clang; |
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| 21 | |
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| 22 | NoSanitizeList::NoSanitizeList(const std::vector<std::string> &NoSanitizePaths, |
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| 23 | SourceManager &SM) |
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| 24 | : SSCL(SanitizerSpecialCaseList::createOrDie( |
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| 25 | Paths: NoSanitizePaths, VFS&: SM.getFileManager().getVirtualFileSystem())), |
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| 26 | SM(SM) {} |
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| 27 | |
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| 28 | NoSanitizeList::~NoSanitizeList() = default; |
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| 29 | |
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| 30 | bool NoSanitizeList::containsPrefix(SanitizerMask Mask, StringRef Prefix, |
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| 31 | StringRef Name, StringRef Category) const { |
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| 32 | std::pair<unsigned, unsigned> NoSan = |
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| 33 | SSCL->inSectionBlame(Mask, Prefix, Query: Name, Category); |
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| 34 | if (NoSan == llvm::SpecialCaseList::NotFound) |
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| 35 | return false; |
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| 36 | std::pair<unsigned, unsigned> San = |
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| 37 | SSCL->inSectionBlame(Mask, Prefix, Query: Name, Category: "sanitize" ); |
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| 38 | // The statement evaluates to true under the following conditions: |
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| 39 | // 1. The string "prefix:*=sanitize" is absent. |
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| 40 | // 2. If "prefix:*=sanitize" is present, its (File Index, Line Number) is less |
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| 41 | // than that of "prefix:*". |
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| 42 | return San == llvm::SpecialCaseList::NotFound || NoSan > San; |
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| 43 | } |
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| 44 | |
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| 45 | bool NoSanitizeList::containsGlobal(SanitizerMask Mask, StringRef GlobalName, |
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| 46 | StringRef Category) const { |
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| 47 | return containsPrefix(Mask, Prefix: "global" , Name: GlobalName, Category); |
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| 48 | } |
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| 49 | |
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| 50 | bool NoSanitizeList::containsType(SanitizerMask Mask, StringRef MangledTypeName, |
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| 51 | StringRef Category) const { |
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| 52 | return containsPrefix(Mask, Prefix: "type" , Name: MangledTypeName, Category); |
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| 53 | } |
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| 54 | |
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| 55 | bool NoSanitizeList::containsFunction(SanitizerMask Mask, |
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| 56 | StringRef FunctionName) const { |
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| 57 | return containsPrefix(Mask, Prefix: "fun" , Name: FunctionName, Category: {}); |
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| 58 | } |
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| 59 | |
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| 60 | bool NoSanitizeList::containsFile(SanitizerMask Mask, StringRef FileName, |
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| 61 | StringRef Category) const { |
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| 62 | return containsPrefix(Mask, Prefix: "src" , Name: FileName, Category); |
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| 63 | } |
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| 64 | |
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| 65 | bool NoSanitizeList::containsMainFile(SanitizerMask Mask, StringRef FileName, |
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| 66 | StringRef Category) const { |
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| 67 | return containsPrefix(Mask, Prefix: "mainfile" , Name: FileName, Category); |
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| 68 | } |
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| 69 | |
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| 70 | bool NoSanitizeList::containsLocation(SanitizerMask Mask, SourceLocation Loc, |
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| 71 | StringRef Category) const { |
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| 72 | return Loc.isValid() && |
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| 73 | containsFile(Mask, FileName: SM.getFilename(SpellingLoc: SM.getFileLoc(Loc)), Category); |
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| 74 | } |
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| 75 | |
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