1 //===--- CloexecCreatCheck.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 "CloexecCreatCheck.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)17 void CloexecCreatCheck::registerMatchers(MatchFinder *Finder) {
18 auto CharPointerType = hasType(pointerType(pointee(isAnyCharacter())));
19 auto MODETType = hasType(namedDecl(hasName("mode_t")));
20 registerMatchersImpl(Finder,
21 functionDecl(isExternC(), returns(isInteger()),
22 hasName("creat"),
23 hasParameter(0, CharPointerType),
24 hasParameter(1, MODETType)));
25 }
26
check(const MatchFinder::MatchResult & Result)27 void CloexecCreatCheck::check(const MatchFinder::MatchResult &Result) {
28 const std::string &ReplacementText =
29 (Twine("open (") + getSpellingArg(Result, 0) +
30 ", O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC, " +
31 getSpellingArg(Result, 1) + ")")
32 .str();
33 replaceFunc(Result,
34 "prefer open() to creat() because open() allows O_CLOEXEC",
35 ReplacementText);
36 }
37
38 } // namespace clang::tidy::android
39