1 //===--- CloexecDupCheck.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 "CloexecDupCheck.h"
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 
13 using namespace clang::ast_matchers;
14 
15 namespace clang {
16 namespace tidy {
17 namespace android {
18 
registerMatchers(MatchFinder * Finder)19 void CloexecDupCheck::registerMatchers(MatchFinder *Finder) {
20   registerMatchersImpl(Finder,
21                        functionDecl(returns(isInteger()), hasName("dup"),
22                                     hasParameter(0, hasType(isInteger()))));
23 }
24 
check(const MatchFinder::MatchResult & Result)25 void CloexecDupCheck::check(const MatchFinder::MatchResult &Result) {
26   std::string ReplacementText =
27       (Twine("fcntl(") + getSpellingArg(Result, 0) + ", F_DUPFD_CLOEXEC)")
28           .str();
29 
30   replaceFunc(Result,
31               "prefer fcntl() to dup() because fcntl() allows F_DUPFD_CLOEXEC",
32               ReplacementText);
33 }
34 
35 } // namespace android
36 } // namespace tidy
37 } // namespace clang
38