clang-tools-extra/clang-tidy/android/CloexecAccept4Check.cpp

   1 //===--- CloexecAccept4Check.cpp - clang-tidy------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "CloexecAccept4Check.h"
  10 #include "../utils/ASTUtils.h"
  11 #include "clang/AST/ASTContext.h"
  12 #include "clang/ASTMatchers/ASTMatchFinder.h"
  13
  14 using namespace clang::ast_matchers;
  15
  16 namespace clang::tidy::android {
  17
  18 void CloexecAccept4Check::registerMatchers(MatchFinder *Finder) {
  19   auto SockAddrPointerType =
  20       hasType(pointsTo(recordDecl(isStruct(), hasName("sockaddr"))));
  21   auto SockLenPointerType = hasType(pointsTo(namedDecl(hasName("socklen_t"))));
  22
  23   registerMatchersImpl(Finder,
  24                        functionDecl(returns(isInteger()), hasName("accept4"),
  25                                     hasParameter(0, hasType(isInteger())),
  26                                     hasParameter(1, SockAddrPointerType),
  27                                     hasParameter(2, SockLenPointerType),
  28                                     hasParameter(3, hasType(isInteger()))));
  29 }
  30
  31 void CloexecAccept4Check::check(const MatchFinder::MatchResult &Result) {
  32   insertMacroFlag(Result, /*MacroFlag=*/"SOCK_CLOEXEC", /*ArgPos=*/3);
  33 }
  34
  35 } // namespace clang::tidy::android