clang-tools 17.0.0git
CloexecCreatCheck.cpp
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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
13using namespace clang::ast_matchers;
14
15namespace clang::tidy::android {
16
17void CloexecCreatCheck::registerMatchers(MatchFinder *Finder) {
18 auto CharPointerType = hasType(pointerType(pointee(isAnyCharacter())));
19 auto MODETType = hasType(namedDecl(hasName("mode_t")));
21 functionDecl(isExternC(), returns(isInteger()),
22 hasName("creat"),
23 hasParameter(0, CharPointerType),
24 hasParameter(1, MODETType)));
25}
26
27void 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
void replaceFunc(const ast_matchers::MatchFinder::MatchResult &Result, StringRef WarningMsg, StringRef FixMsg)
Type2 is to replace the API to another function that has required the ability.
void registerMatchersImpl(ast_matchers::MatchFinder *Finder, ast_matchers::internal::Matcher< FunctionDecl > Function)
StringRef getSpellingArg(const ast_matchers::MatchFinder::MatchResult &Result, int N) const
Helper function to get the spelling of a particular argument.
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.