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
9 #include "CloexecAcceptCheck.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 CloexecAcceptCheck::registerMatchers(MatchFinder *Finder) {
18 auto SockAddrPointerType =
19 hasType(pointsTo(recordDecl(isStruct(), hasName("sockaddr"))));
20 auto SockLenPointerType = hasType(pointsTo(namedDecl(hasName("socklen_t"))));
21
22 registerMatchersImpl(Finder,
23 functionDecl(returns(isInteger()), hasName("accept"),
24 hasParameter(0, hasType(isInteger())),
25 hasParameter(1, SockAddrPointerType),
26 hasParameter(2, SockLenPointerType)));
27 }
28
check(const MatchFinder::MatchResult & Result)29 void 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
36 replaceFunc(
37 Result,
38 "prefer accept4() to accept() because accept4() allows SOCK_CLOEXEC",
39 ReplacementText);
40 }
41
42 } // namespace clang::tidy::android
43