clang-tools 22.0.0git
CloexecAcceptCheck.cpp
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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-exception
6//
7//===----------------------------------------------------------------------===//
8
10#include "clang/ASTMatchers/ASTMatchFinder.h"
11
12using namespace clang::ast_matchers;
13
14namespace clang::tidy::android {
15
16void CloexecAcceptCheck::registerMatchers(MatchFinder *Finder) {
17 auto SockAddrPointerType =
18 hasType(pointsTo(recordDecl(isStruct(), hasName("sockaddr"))));
19 auto SockLenPointerType = hasType(pointsTo(namedDecl(hasName("socklen_t"))));
20
22 functionDecl(returns(isInteger()), hasName("accept"),
23 hasParameter(0, hasType(isInteger())),
24 hasParameter(1, SockAddrPointerType),
25 hasParameter(2, SockLenPointerType)));
26}
27
28void CloexecAcceptCheck::check(const MatchFinder::MatchResult &Result) {
29 std::string ReplacementText = (Twine("accept4(") + getSpellingArg(Result, 0) +
30 ", " + getSpellingArg(Result, 1) + ", " +
31 getSpellingArg(Result, 2) + ", SOCK_CLOEXEC)")
32 .str();
33
35 Result,
36 "prefer accept4() to accept() because accept4() allows SOCK_CLOEXEC",
37 ReplacementText);
38}
39
40} // namespace clang::tidy::android
void registerMatchers(ast_matchers::MatchFinder *Finder) override
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
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.