1 //===--- CloexecPipeCheck.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 "CloexecPipeCheck.h" 10 #include "clang/AST/ASTContext.h" 11 #include "clang/ASTMatchers/ASTMatchFinder.h" 12 13 using namespace clang::ast_matchers; 14 15 namespace clang::tidy::android { 16 registerMatchers(MatchFinder * Finder)17void CloexecPipeCheck::registerMatchers(MatchFinder *Finder) { 18 registerMatchersImpl(Finder, 19 functionDecl(returns(isInteger()), hasName("pipe"), 20 hasParameter(0, hasType(pointsTo(isInteger()))))); 21 } 22 check(const MatchFinder::MatchResult & Result)23void CloexecPipeCheck::check(const MatchFinder::MatchResult &Result) { 24 std::string ReplacementText = 25 (Twine("pipe2(") + getSpellingArg(Result, 0) + ", O_CLOEXEC)").str(); 26 27 replaceFunc( 28 Result, 29 "prefer pipe2() with O_CLOEXEC to avoid leaking file descriptors to child processes", 30 ReplacementText); 31 } 32 33 } // namespace clang::tidy::android 34