Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang-tools-extra/clang-tidy/android/AndroidTidyModule.cpp

@@ -0,0 +1,67 @@
+//===--- AndroidTidyModule.cpp - clang-tidy--------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "../ClangTidy.h"
+#include "../ClangTidyModule.h"
+#include "../ClangTidyModuleRegistry.h"
+#include "CloexecAccept4Check.h"
+#include "CloexecAcceptCheck.h"
+#include "CloexecCreatCheck.h"
+#include "CloexecEpollCreate1Check.h"
+#include "CloexecEpollCreateCheck.h"
+#include "CloexecDupCheck.h"
+#include "CloexecFopenCheck.h"
+#include "CloexecInotifyInit1Check.h"
+#include "CloexecInotifyInitCheck.h"
+#include "CloexecMemfdCreateCheck.h"
+#include "CloexecOpenCheck.h"
+#include "CloexecSocketCheck.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// This module is for Android specific checks.
+class AndroidModule : public ClangTidyModule {
+public:
+  void addCheckFactories(ClangTidyCheckFactories &CheckFactories) override {
+    CheckFactories.registerCheck<CloexecAccept4Check>("android-cloexec-accept4");
+    CheckFactories.registerCheck<CloexecAcceptCheck>("android-cloexec-accept");
+    CheckFactories.registerCheck<CloexecCreatCheck>("android-cloexec-creat");
+    CheckFactories.registerCheck<CloexecEpollCreate1Check>(
+        "android-cloexec-epoll-create1");
+    CheckFactories.registerCheck<CloexecEpollCreateCheck>(
+        "android-cloexec-epoll-create");
+    CheckFactories.registerCheck<CloexecDupCheck>("android-cloexec-dup");
+    CheckFactories.registerCheck<CloexecFopenCheck>("android-cloexec-fopen");
+    CheckFactories.registerCheck<CloexecInotifyInitCheck>(
+        "android-cloexec-inotify-init");
+    CheckFactories.registerCheck<CloexecInotifyInit1Check>(
+        "android-cloexec-inotify-init1");
+    CheckFactories.registerCheck<CloexecMemfdCreateCheck>(
+        "android-cloexec-memfd-create");
+    CheckFactories.registerCheck<CloexecOpenCheck>("android-cloexec-open");
+    CheckFactories.registerCheck<CloexecSocketCheck>("android-cloexec-socket");
+  }
+};
+
+// Register the AndroidTidyModule using this statically initialized variable.
+static ClangTidyModuleRegistry::Add<AndroidModule>
+    X("android-module", "Adds Android platform checks.");
+
+} // namespace android
+
+// This anchor is used to force the linker to link in the generated object file
+// and thus register the AndroidModule.
+volatile int AndroidModuleAnchorSource = 0;
+
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CMakeLists.txt

@@ -0,0 +1,26 @@
+set(LLVM_LINK_COMPONENTS support)
+
+add_clang_library(clangTidyAndroidModule
+  AndroidTidyModule.cpp
+  CloexecAccept4Check.cpp
+  CloexecAcceptCheck.cpp
+  CloexecCheck.cpp
+  CloexecCreatCheck.cpp
+  CloexecEpollCreate1Check.cpp
+  CloexecEpollCreateCheck.cpp
+  CloexecDupCheck.cpp
+  CloexecFopenCheck.cpp
+  CloexecInotifyInit1Check.cpp
+  CloexecInotifyInitCheck.cpp
+  CloexecMemfdCreateCheck.cpp
+  CloexecOpenCheck.cpp
+  CloexecSocketCheck.cpp
+
+  LINK_LIBS
+  clangAST
+  clangASTMatchers
+  clangBasic
+  clangLex
+  clangTidy
+  clangTidyUtils
+  )

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecAccept4Check.cpp

@@ -0,0 +1,40 @@
+//===--- CloexecAccept4Check.cpp - clang-tidy------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CloexecAccept4Check.h"
+#include "../utils/ASTUtils.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+void CloexecAccept4Check::registerMatchers(MatchFinder *Finder) {
+  auto SockAddrPointerType =
+      hasType(pointsTo(recordDecl(isStruct(), hasName("sockaddr"))));
+  auto SockLenPointerType = hasType(pointsTo(namedDecl(hasName("socklen_t"))));
+
+  registerMatchersImpl(Finder,
+                       functionDecl(returns(isInteger()), hasName("accept4"),
+                                    hasParameter(0, hasType(isInteger())),
+                                    hasParameter(1, SockAddrPointerType),
+                                    hasParameter(2, SockLenPointerType),
+                                    hasParameter(3, hasType(isInteger()))));
+}
+
+void CloexecAccept4Check::check(const MatchFinder::MatchResult &Result) {
+  insertMacroFlag(Result, /*MarcoFlag=*/"SOCK_CLOEXEC", /*ArgPos=*/3);
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecAccept4Check.h

@@ -0,0 +1,35 @@
+//===--- CloexecAccept4Check.h - clang-tidy----------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_ACCEPT4_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_ACCEPT4_H
+
+#include "CloexecCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// Finds code that uses accept4() without using the SOCK_CLOEXEC flag.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/android-cloexec-accept4.html
+class CloexecAccept4Check : public CloexecCheck {
+public:
+  CloexecAccept4Check(StringRef Name, ClangTidyContext *Context)
+      : CloexecCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_ACCEPT4_H

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecAcceptCheck.cpp

@@ -0,0 +1,47 @@
+//===--- CloexecAcceptCheck.cpp - clang-tidy-------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CloexecAcceptCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+void CloexecAcceptCheck::registerMatchers(MatchFinder *Finder) {
+  auto SockAddrPointerType =
+      hasType(pointsTo(recordDecl(isStruct(), hasName("sockaddr"))));
+  auto SockLenPointerType = hasType(pointsTo(namedDecl(hasName("socklen_t"))));
+
+  registerMatchersImpl(Finder,
+                       functionDecl(returns(isInteger()), hasName("accept"),
+                                    hasParameter(0, hasType(isInteger())),
+                                    hasParameter(1, SockAddrPointerType),
+                                    hasParameter(2, SockLenPointerType)));
+}
+
+void CloexecAcceptCheck::check(const MatchFinder::MatchResult &Result) {
+  const std::string &ReplacementText =
+      (Twine("accept4(") + getSpellingArg(Result, 0) + ", " +
+       getSpellingArg(Result, 1) + ", " + getSpellingArg(Result, 2) +
+       ", SOCK_CLOEXEC)")
+          .str();
+
+  replaceFunc(
+      Result,
+      "prefer accept4() to accept() because accept4() allows SOCK_CLOEXEC",
+      ReplacementText);
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecAcceptCheck.h

@@ -0,0 +1,35 @@
+//===--- CloexecAcceptCheck.h - clang-tidy-----------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_ACCEPT_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_ACCEPT_H
+
+#include "CloexecCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// accept() is better to be replaced by accept4().
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/android-cloexec-accept.html
+class CloexecAcceptCheck : public CloexecCheck {
+public:
+  CloexecAcceptCheck(StringRef Name, ClangTidyContext *Context)
+      : CloexecCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_ACCEPT_H

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecCheck.cpp

@@ -0,0 +1,114 @@
+//===--- CloexecCheck.cpp - clang-tidy-------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CloexecCheck.h"
+#include "../utils/ASTUtils.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+namespace {
+// Helper function to form the correct string mode for Type3.
+// Build the replace text. If it's string constant, add <Mode> directly in the
+// end of the string. Else, add <Mode>.
+std::string buildFixMsgForStringFlag(const Expr *Arg, const SourceManager &SM,
+                                     const LangOptions &LangOpts, char Mode) {
+  if (Arg->getLocStart().isMacroID())
+    return (Lexer::getSourceText(
+                CharSourceRange::getTokenRange(Arg->getSourceRange()), SM,
+                LangOpts) +
+            " \"" + Twine(Mode) + "\"")
+        .str();
+
+  StringRef SR = cast<StringLiteral>(Arg->IgnoreParenCasts())->getString();
+  return ("\"" + SR + Twine(Mode) + "\"").str();
+}
+} // namespace
+
+const char *CloexecCheck::FuncDeclBindingStr = "funcDecl";
+
+const char *CloexecCheck::FuncBindingStr ="func";
+
+void CloexecCheck::registerMatchersImpl(
+    MatchFinder *Finder, internal::Matcher<FunctionDecl> Function) {
+  // We assume all the checked APIs are C functions.
+  Finder->addMatcher(
+      callExpr(
+          callee(functionDecl(isExternC(), Function).bind(FuncDeclBindingStr)))
+          .bind(FuncBindingStr),
+      this);
+}
+
+void CloexecCheck::insertMacroFlag(const MatchFinder::MatchResult &Result,
+                                   StringRef MacroFlag, int ArgPos) {
+  const auto *MatchedCall = Result.Nodes.getNodeAs<CallExpr>(FuncBindingStr);
+  const auto *FlagArg = MatchedCall->getArg(ArgPos);
+  const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>(FuncDeclBindingStr);
+  SourceManager &SM = *Result.SourceManager;
+
+  if (utils::exprHasBitFlagWithSpelling(FlagArg->IgnoreParenCasts(), SM,
+                                        Result.Context->getLangOpts(),
+                                        MacroFlag))
+    return;
+
+  SourceLocation EndLoc =
+      Lexer::getLocForEndOfToken(SM.getFileLoc(FlagArg->getLocEnd()), 0, SM,
+                                 Result.Context->getLangOpts());
+
+  diag(EndLoc, "%0 should use %1 where possible")
+      << FD << MacroFlag
+      << FixItHint::CreateInsertion(EndLoc, (Twine(" | ") + MacroFlag).str());
+}
+
+void CloexecCheck::replaceFunc(const MatchFinder::MatchResult &Result,
+                               StringRef WarningMsg, StringRef FixMsg) {
+  const auto *MatchedCall = Result.Nodes.getNodeAs<CallExpr>(FuncBindingStr);
+  diag(MatchedCall->getLocStart(), WarningMsg)
+      << FixItHint::CreateReplacement(MatchedCall->getSourceRange(), FixMsg);
+}
+
+void CloexecCheck::insertStringFlag(
+    const ast_matchers::MatchFinder::MatchResult &Result, const char Mode,
+    const int ArgPos) {
+  const auto *MatchedCall = Result.Nodes.getNodeAs<CallExpr>(FuncBindingStr);
+  const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>(FuncDeclBindingStr);
+  const auto *ModeArg = MatchedCall->getArg(ArgPos);
+
+  // Check if the <Mode> may be in the mode string.
+  const auto *ModeStr = dyn_cast<StringLiteral>(ModeArg->IgnoreParenCasts());
+  if (!ModeStr || (ModeStr->getString().find(Mode) != StringRef::npos))
+    return;
+
+  const std::string &ReplacementText = buildFixMsgForStringFlag(
+      ModeArg, *Result.SourceManager, Result.Context->getLangOpts(), Mode);
+
+  diag(ModeArg->getLocStart(), "use %0 mode '%1' to set O_CLOEXEC")
+      << FD << std::string(1, Mode)
+      << FixItHint::CreateReplacement(ModeArg->getSourceRange(),
+                                      ReplacementText);
+}
+
+StringRef CloexecCheck::getSpellingArg(const MatchFinder::MatchResult &Result,
+                                       int N) const {
+  const auto *MatchedCall = Result.Nodes.getNodeAs<CallExpr>(FuncBindingStr);
+  const SourceManager &SM = *Result.SourceManager;
+  return Lexer::getSourceText(
+      CharSourceRange::getTokenRange(MatchedCall->getArg(N)->getSourceRange()),
+      SM, Result.Context->getLangOpts());
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecCheck.h

@@ -0,0 +1,105 @@
+//===--- CloexecCheck.h - clang-tidy-----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file contains the declaration of the CloexecCheck class, which is the
+/// base class for all of the close-on-exec checks in Android module.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_H
+
+#include "../ClangTidy.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// \brief The base class for all close-on-exec checks in Android module.
+/// To be specific, there are some functions that need the close-on-exec flag to
+/// prevent the file descriptor leakage on fork+exec and this class provides
+/// utilities to identify and fix these C functions.
+class CloexecCheck : public ClangTidyCheck {
+public:
+  CloexecCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context) {}
+
+protected:
+  void
+  registerMatchersImpl(ast_matchers::MatchFinder *Finder,
+                       ast_matchers::internal::Matcher<FunctionDecl> Function);
+
+  /// Currently, we have three types of fixes.
+  ///
+  /// Type1 is to insert the necessary macro flag in the flag argument. For
+  /// example, 'O_CLOEXEC' is required in function 'open()', so
+  /// \code
+  ///   open(file, O_RDONLY);
+  /// \endcode
+  /// should be
+  /// \code
+  ///   open(file, O_RDONLY | O_CLOEXE);
+  /// \endcode
+  ///
+  /// \param [out] Result MatchResult from AST matcher.
+  /// \param MacroFlag The macro name of the flag.
+  /// \param ArgPos The 0-based position of the flag argument.
+  void insertMacroFlag(const ast_matchers::MatchFinder::MatchResult &Result,
+                       StringRef MacroFlag, int ArgPos);
+
+  /// Type2 is to replace the API to another function that has required the
+  /// ability. For example:
+  /// \code
+  ///   creat(path, mode);
+  /// \endcode
+  /// should be
+  /// \code
+  ///   open(path, O_CREAT | O_WRONLY | O_TRUNC | O_CLOEXEC, mode)
+  /// \endcode
+  ///
+  /// \param [out] Result MatchResult from AST matcher.
+  /// \param WarningMsg The warning message.
+  /// \param FixMsg The fix message.
+  void replaceFunc(const ast_matchers::MatchFinder::MatchResult &Result,
+                   StringRef WarningMsg, StringRef FixMsg);
+
+  /// Type3 is also to add a flag to the corresponding argument, but this time,
+  /// the flag is some string and each char represents a mode rather than a
+  /// macro. For example, 'fopen' needs char 'e' in its mode argument string, so
+  /// \code
+  ///   fopen(in_file, "r");
+  /// \endcode
+  /// should be
+  /// \code
+  ///   fopen(in_file, "re");
+  /// \endcode
+  ///
+  /// \param [out] Result MatchResult from AST matcher.
+  /// \param Mode The required mode char.
+  /// \param ArgPos The 0-based position of the flag argument.
+  void insertStringFlag(const ast_matchers::MatchFinder::MatchResult &Result,
+                        const char Mode, const int ArgPos);
+
+  /// Helper function to get the spelling of a particular argument.
+  StringRef getSpellingArg(const ast_matchers::MatchFinder::MatchResult &Result,
+                           int N) const;
+
+  /// Binding name of the FuncDecl of a function call.
+  static const char *FuncDeclBindingStr;
+
+  /// Binding name of the function call expression.
+  static const char *FuncBindingStr;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_H

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecCreatCheck.cpp

@@ -0,0 +1,43 @@
+//===--- CloexecCreatCheck.cpp - clang-tidy--------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CloexecCreatCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+void CloexecCreatCheck::registerMatchers(MatchFinder *Finder) {
+  auto CharPointerType = hasType(pointerType(pointee(isAnyCharacter())));
+  auto MODETType = hasType(namedDecl(hasName("mode_t")));
+  registerMatchersImpl(Finder,
+                       functionDecl(isExternC(), returns(isInteger()),
+                                    hasName("creat"),
+                                    hasParameter(0, CharPointerType),
+                                    hasParameter(1, MODETType)));
+}
+
+void CloexecCreatCheck::check(const MatchFinder::MatchResult &Result) {
+  const std::string &ReplacementText =
+      (Twine("open (") + getSpellingArg(Result, 0) +
+       ", O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, " +
+       getSpellingArg(Result, 1) + ")")
+          .str();
+  replaceFunc(Result,
+              "prefer open() to creat() because open() allows O_CLOEXEC",
+              ReplacementText);
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecCreatCheck.h

@@ -0,0 +1,35 @@
+//===--- CloexecCreatCheck.h - clang-tidy------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_CREAT_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_CREAT_H
+
+#include "CloexecCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// creat() is better to be replaced by open().
+/// Find the usage of creat() and redirect user to use open().
+
+/// http://clang.llvm.org/extra/clang-tidy/checks/android-cloexec-creat.html
+class CloexecCreatCheck : public CloexecCheck {
+public:
+  CloexecCreatCheck(StringRef Name, ClangTidyContext *Context)
+      : CloexecCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_CREAT_H

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecDupCheck.cpp

@@ -0,0 +1,38 @@
+//===--- CloexecDupCheck.cpp - clang-tidy----------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CloexecDupCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+void CloexecDupCheck::registerMatchers(MatchFinder *Finder) {
+  registerMatchersImpl(Finder,
+                       functionDecl(returns(isInteger()), hasName("dup"),
+                                    hasParameter(0, hasType(isInteger()))));
+}
+
+void CloexecDupCheck::check(const MatchFinder::MatchResult &Result) {
+  const std::string &ReplacementText =
+      (Twine("fcntl(") + getSpellingArg(Result, 0) + ", F_DUPFD_CLOEXEC)")
+          .str();
+
+  replaceFunc(Result,
+              "prefer fcntl() to dup() because fcntl() allows F_DUPFD_CLOEXEC",
+              ReplacementText);
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecDupCheck.h

@@ -0,0 +1,36 @@
+//===--- CloexecDupCheck.h - clang-tidy-------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_DUP_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_DUP_H
+
+#include "CloexecCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// dup() is better to be replaced by fcntl(), which has close-on-exec flag.
+/// Find the usage of dup() and redirect user to use fcntl().
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/android-cloexec-dup.html
+class CloexecDupCheck : public CloexecCheck {
+public:
+  CloexecDupCheck(StringRef Name, ClangTidyContext *Context)
+      : CloexecCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_DUP_H

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecEpollCreate1Check.cpp

@@ -0,0 +1,33 @@
+//===--- CloexecEpollCreate1Check.cpp - clang-tidy-------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CloexecEpollCreate1Check.h"
+#include "../utils/ASTUtils.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+void CloexecEpollCreate1Check::registerMatchers(MatchFinder *Finder) {
+  registerMatchersImpl(
+      Finder, functionDecl(returns(isInteger()), hasName("epoll_create1"),
+                           hasParameter(0, hasType(isInteger()))));
+}
+
+void CloexecEpollCreate1Check::check(const MatchFinder::MatchResult &Result) {
+  insertMacroFlag(Result, /*MarcoFlag=*/"EPOLL_CLOEXEC", /*ArgPos=*/0);
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecEpollCreate1Check.h

@@ -0,0 +1,35 @@
+//===--- CloexecEpollCreate1Check.h - clang-tidy-----------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_EPOLL_CREATE1_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_EPOLL_CREATE1_H
+
+#include "CloexecCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// Finds code that uses epoll_create1() without using the EPOLL_CLOEXEC flag.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/android-cloexec-epoll-create1.html
+class CloexecEpollCreate1Check : public CloexecCheck {
+public:
+  CloexecEpollCreate1Check(StringRef Name, ClangTidyContext *Context)
+      : CloexecCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_EPOLL_CREATE1_H

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecEpollCreateCheck.cpp

@@ -0,0 +1,36 @@
+//===--- CloexecEpollCreateCheck.cpp - clang-tidy--------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CloexecEpollCreateCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+void CloexecEpollCreateCheck::registerMatchers(MatchFinder *Finder) {
+  registerMatchersImpl(
+      Finder, functionDecl(returns(isInteger()), hasName("epoll_create"),
+                           hasParameter(0, hasType(isInteger()))));
+}
+
+void CloexecEpollCreateCheck::check(const MatchFinder::MatchResult &Result) {
+  replaceFunc(Result,
+              "prefer epoll_create() to epoll_create1() "
+              "because epoll_create1() allows "
+              "EPOLL_CLOEXEC",
+              "epoll_create1(EPOLL_CLOEXEC)");
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecEpollCreateCheck.h

@@ -0,0 +1,35 @@
+//===--- CloexecEpollCreateCheck.h - clang-tidy------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_EPOLL_CREATE_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_EPOLL_CREATE_H
+
+#include "CloexecCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// epoll_create() is better to be replaced by epoll_create1().
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/android-cloexec-epoll-create.html
+class CloexecEpollCreateCheck : public CloexecCheck {
+public:
+  CloexecEpollCreateCheck(StringRef Name, ClangTidyContext *Context)
+      : CloexecCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_EPOLL_CREATE_H

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecFopenCheck.cpp

@@ -0,0 +1,36 @@
+//===--- CloexecFopenCheck.cpp - clang-tidy--------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.  //
+//===----------------------------------------------------------------------===//
+
+#include "CloexecFopenCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Type.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+void CloexecFopenCheck::registerMatchers(MatchFinder *Finder) {
+  auto CharPointerType = hasType(pointerType(pointee(isAnyCharacter())));
+  registerMatchersImpl(Finder,
+                       functionDecl(isExternC(), returns(asString("FILE *")),
+                                    hasName("fopen"),
+                                    hasParameter(0, CharPointerType),
+                                    hasParameter(1, CharPointerType)));
+}
+
+void CloexecFopenCheck::check(const MatchFinder::MatchResult &Result) {
+  insertStringFlag(Result, /*Mode=*/'e', /*ArgPos=*/1);
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecFopenCheck.h

@@ -0,0 +1,38 @@
+//===--- CloexecFopenCheck.h - clang-tidy------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source //
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_FOPEN_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_FOPEN_H
+
+#include "CloexecCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// fopen() is suggested to include "e" in their mode string; like "re" would be
+/// better than "r".
+///
+/// This check only works when corresponding argument is StringLiteral. No
+/// constant propagation.
+///
+/// http://clang.llvm.org/extra/clang-tidy/checks/android-cloexec-fopen.html
+class CloexecFopenCheck : public CloexecCheck {
+public:
+  CloexecFopenCheck(StringRef Name, ClangTidyContext *Context)
+      : CloexecCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_FOPEN_H

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecInotifyInit1Check.cpp

@@ -0,0 +1,33 @@
+//===--- CloexecInotifyInit1Check.cpp - clang-tidy-------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CloexecInotifyInit1Check.h"
+#include "../utils/ASTUtils.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+void CloexecInotifyInit1Check::registerMatchers(MatchFinder *Finder) {
+  registerMatchersImpl(
+      Finder, functionDecl(returns(isInteger()), hasName("inotify_init1"),
+                           hasParameter(0, hasType(isInteger()))));
+}
+
+void CloexecInotifyInit1Check::check(const MatchFinder::MatchResult &Result) {
+  insertMacroFlag(Result, /*MarcoFlag=*/"IN_CLOEXEC", /*ArgPos=*/0);
+}
+
+} // namespace android
+} // namespace tidy
+} // namespace clang

external/llvm-project/clang-tools-extra/clang-tidy/android/CloexecInotifyInit1Check.h

@@ -0,0 +1,35 @@
+//===--- CloexecInotifyInit1Check.h - clang-tidy-----------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_INOTIFY_INIT1_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_INOTIFY_INIT1_H
+
+#include "CloexecCheck.h"
+
+namespace clang {
+namespace tidy {
+namespace android {
+
+/// Finds code that uses inotify_init1() without using the IN_CLOEXEC flag.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/android-cloexec-inotify-init1.html
+class CloexecInotifyInit1Check : public CloexecCheck {
+public:
+  CloexecInotifyInit1Check(StringRef Name, ClangTidyContext *Context)
+      : CloexecCheck(Name, Context) {}
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+};
+
+} // namespace android
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_ANDROID_CLOEXEC_INOTIFY_INIT1_H