38 lines · cpp
1//===----------------------------------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "CloexecOpenCheck.h"10#include "clang/ASTMatchers/ASTMatchFinder.h"11 12using namespace clang::ast_matchers;13 14namespace clang::tidy::android {15 16void CloexecOpenCheck::registerMatchers(MatchFinder *Finder) {17 auto CharPointerType = hasType(pointerType(pointee(isAnyCharacter())));18 registerMatchersImpl(Finder,19 functionDecl(isExternC(), returns(isInteger()),20 hasAnyName("open", "open64"),21 hasParameter(0, CharPointerType),22 hasParameter(1, hasType(isInteger()))));23 registerMatchersImpl(24 Finder, functionDecl(isExternC(), returns(isInteger()), hasName("openat"),25 hasParameter(0, hasType(isInteger())),26 hasParameter(1, CharPointerType),27 hasParameter(2, hasType(isInteger()))));28}29 30void CloexecOpenCheck::check(const MatchFinder::MatchResult &Result) {31 const auto *FD = Result.Nodes.getNodeAs<FunctionDecl>(FuncDeclBindingStr);32 assert(FD->param_size() > 1);33 const int ArgPos = (FD->param_size() > 2) ? 2 : 1;34 insertMacroFlag(Result, /*MacroFlag=*/"O_CLOEXEC", ArgPos);35}36 37} // namespace clang::tidy::android38