clang-tools 20.0.0git
CloexecAcceptCheck.cpp
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1//===--- CloexecAcceptCheck.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
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 CloexecAcceptCheck::registerMatchers(MatchFinder *Finder) {
18 auto SockAddrPointerType =
19 hasType(pointsTo(recordDecl(isStruct(), hasName("sockaddr"))));
20 auto SockLenPointerType = hasType(pointsTo(namedDecl(hasName("socklen_t"))));
21
23 functionDecl(returns(isInteger()), hasName("accept"),
24 hasParameter(0, hasType(isInteger())),
25 hasParameter(1, SockAddrPointerType),
26 hasParameter(2, SockLenPointerType)));
27}
28
29void CloexecAcceptCheck::check(const MatchFinder::MatchResult &Result) {
30 std::string ReplacementText =
31 (Twine("accept4(") + getSpellingArg(Result, 0) + ", " +
32 getSpellingArg(Result, 1) + ", " + getSpellingArg(Result, 2) +
33 ", SOCK_CLOEXEC)")
34 .str();
35
37 Result,
38 "prefer accept4() to accept() because accept4() allows SOCK_CLOEXEC",
39 ReplacementText);
40}
41
42} // namespace clang::tidy::android
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.
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.