[rtsan] Add more socket interceptors

[cjappl]

Adds getaddrinfo, getnameinfo, bind, listen, accept and connect

[llvmbot]

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Chris Apple (cjappl)

Changes

Adds getaddrinfo, getnameinfo, bind, listen, accept and connect

---

Full diff: https://github.com/llvm/llvm-project/pull/115020.diff

2 Files Affected:

• (modified) compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp (+46-4)
• (modified) compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp (+49)

diff --git a/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp b/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp
index 55241972167191..c3fcd4f2da85ce 100644
--- a/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp
+++ b/compiler-rt/lib/rtsan/rtsan_interceptors_posix.cpp
@@ -535,6 +535,42 @@ INTERCEPTOR(int, shm_unlink, const char *name) {
 }
 
 // Sockets
+INTERCEPTOR(int, getaddrinfo, const char *node, const char *service,
+            const struct addrinfo *hints, struct addrinfo **res) {
+  __rtsan_notify_intercepted_call("getaddrinfo");
+  return REAL(getaddrinfo)(node, service, hints, res);
+}
+
+INTERCEPTOR(int, getnameinfo, const struct sockaddr *sa, socklen_t salen,
+            char *host, socklen_t hostlen, char *serv, socklen_t servlen,
+            int flags) {
+  __rtsan_notify_intercepted_call("getnameinfo");
+  return REAL(getnameinfo)(sa, salen, host, hostlen, serv, servlen, flags);
+}
+
+INTERCEPTOR(int, bind, int socket, const struct sockaddr *address,
+            socklen_t address_len) {
+  __rtsan_notify_intercepted_call("bind");
+  return REAL(bind)(socket, address, address_len);
+}
+
+INTERCEPTOR(int, listen, int socket, int backlog) {
+  __rtsan_notify_intercepted_call("listen");
+  return REAL(listen)(socket, backlog);
+}
+
+INTERCEPTOR(int, accept, int socket, struct sockaddr *address,
+            socklen_t *address_len) {
+  __rtsan_notify_intercepted_call("accept");
+  return REAL(accept)(socket, address, address_len);
+}
+
+INTERCEPTOR(int, connect, int socket, const struct sockaddr *address,
+            socklen_t address_len) {
+  __rtsan_notify_intercepted_call("connect");
+  return REAL(connect)(socket, address, address_len);
+}
+
 INTERCEPTOR(int, socket, int domain, int type, int protocol) {
   __rtsan_notify_intercepted_call("socket");
   return REAL(socket)(domain, type, protocol);
@@ -648,14 +684,20 @@ void __rtsan::InitializeInterceptors() {
   INTERCEPT_FUNCTION(usleep);
   INTERCEPT_FUNCTION(nanosleep);
 
-  INTERCEPT_FUNCTION(socket);
+  INTERCEPT_FUNCTION(accept);
+  INTERCEPT_FUNCTION(bind);
+  INTERCEPT_FUNCTION(connect);
+  INTERCEPT_FUNCTION(getaddrinfo);
+  INTERCEPT_FUNCTION(getnameinfo);
+  INTERCEPT_FUNCTION(listen);
+  INTERCEPT_FUNCTION(recv);
+  INTERCEPT_FUNCTION(recvfrom);
+  INTERCEPT_FUNCTION(recvmsg);
   INTERCEPT_FUNCTION(send);
   INTERCEPT_FUNCTION(sendmsg);
   INTERCEPT_FUNCTION(sendto);
-  INTERCEPT_FUNCTION(recv);
-  INTERCEPT_FUNCTION(recvmsg);
-  INTERCEPT_FUNCTION(recvfrom);
   INTERCEPT_FUNCTION(shutdown);
+  INTERCEPT_FUNCTION(socket);
 }
 
 #endif // SANITIZER_POSIX
diff --git a/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp b/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp
index 1850f4fa30f9cb..c7907d155cf615 100644
--- a/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp
+++ b/compiler-rt/lib/rtsan/tests/rtsan_test_interceptors_posix.cpp
@@ -29,6 +29,7 @@
 #endif
 
 #include <fcntl.h>
+#include <netdb.h>
 #include <pthread.h>
 #include <stdio.h>
 #include <sys/mman.h>
@@ -46,6 +47,11 @@ using namespace testing;
 using namespace rtsan_testing;
 using namespace std::chrono_literals;
 
+// NOTE: In the socket tests we pass in bad info to the calls to ensure they
+//       fail which is why we EXPECT_NE 0 for their return codes.
+//       We just care that the call is intercepted
+const int kNotASocketFd = 0;
+
 void *FakeThreadEntryPoint(void *) { return nullptr; }
 
 class RtsanFileTest : public ::testing::Test {
@@ -676,6 +682,49 @@ TEST_F(PthreadRwlockTest, PthreadRwlockWrlockSurvivesWhenNonRealtime) {
 /*
     Sockets
 */
+TEST(TestRtsanInterceptors, GetAddrInfoDiesWhenRealtime) {
+  auto Func = []() {
+    addrinfo *info{};
+    getaddrinfo("localhost", "http", nullptr, &info);
+  };
+  ExpectRealtimeDeath(Func, "getaddrinfo");
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST(TestRtsanInterceptors, GetNameInfoDiesWhenRealtime) {
+  auto Func = []() {
+    char host[NI_MAXHOST];
+    char serv[NI_MAXSERV];
+    getnameinfo(nullptr, 0, host, NI_MAXHOST, serv, NI_MAXSERV, 0);
+  };
+  ExpectRealtimeDeath(Func, "getnameinfo");
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST(TestRtsanInterceptors, BindingASocketDiesWhenRealtime) {
+  auto Func = []() { EXPECT_NE(bind(kNotASocketFd, nullptr, 0), 0); };
+  ExpectRealtimeDeath(Func, "bind");
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST(TestRtsanInterceptors, ListeningOnASocketDiesWhenRealtime) {
+  auto Func = []() { EXPECT_NE(listen(kNotASocketFd, 0), 0); };
+  ExpectRealtimeDeath(Func, "listen");
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST(TestRtsanInterceptors, AcceptingASocketDiesWhenRealtime) {
+  auto Func = []() { EXPECT_NE(accept(kNotASocketFd, nullptr, nullptr), 0); };
+  ExpectRealtimeDeath(Func, "accept");
+  ExpectNonRealtimeSurvival(Func);
+}
+
+TEST(TestRtsanInterceptors, ConnectingASocketDiesWhenRealtime) {
+  auto Func = []() { EXPECT_NE(connect(kNotASocketFd, nullptr, 0), 0); };
+  ExpectRealtimeDeath(Func, "connect");
+  ExpectNonRealtimeSurvival(Func);
+}
+
 TEST(TestRtsanInterceptors, OpeningASocketDiesWhenRealtime) {
   auto Func = []() { socket(PF_INET, SOCK_STREAM, 0); };
   ExpectRealtimeDeath(Func, "socket");