1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright Amazon.com Inc. or its affiliates. */ 3 4 #include <sys/socket.h> 5 #include <netinet/in.h> 6 7 #include "../kselftest_harness.h" 8 9 FIXTURE(bind_wildcard) 10 { 11 struct sockaddr_in addr4; 12 struct sockaddr_in6 addr6; 13 }; 14 15 FIXTURE_VARIANT(bind_wildcard) 16 { 17 const __u32 addr4_const; 18 const struct in6_addr *addr6_const; 19 int expected_errno; 20 }; 21 22 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_any) 23 { 24 .addr4_const = INADDR_ANY, 25 .addr6_const = &in6addr_any, 26 .expected_errno = EADDRINUSE, 27 }; 28 29 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_local) 30 { 31 .addr4_const = INADDR_ANY, 32 .addr6_const = &in6addr_loopback, 33 .expected_errno = 0, 34 }; 35 36 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_any) 37 { 38 .addr4_const = INADDR_LOOPBACK, 39 .addr6_const = &in6addr_any, 40 .expected_errno = EADDRINUSE, 41 }; 42 43 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_local) 44 { 45 .addr4_const = INADDR_LOOPBACK, 46 .addr6_const = &in6addr_loopback, 47 .expected_errno = 0, 48 }; 49 50 FIXTURE_SETUP(bind_wildcard) 51 { 52 self->addr4.sin_family = AF_INET; 53 self->addr4.sin_port = htons(0); 54 self->addr4.sin_addr.s_addr = htonl(variant->addr4_const); 55 56 self->addr6.sin6_family = AF_INET6; 57 self->addr6.sin6_port = htons(0); 58 self->addr6.sin6_addr = *variant->addr6_const; 59 } 60 61 FIXTURE_TEARDOWN(bind_wildcard) 62 { 63 } 64 65 void bind_sockets(struct __test_metadata *_metadata, 66 FIXTURE_DATA(bind_wildcard) *self, 67 int expected_errno, 68 struct sockaddr *addr1, socklen_t addrlen1, 69 struct sockaddr *addr2, socklen_t addrlen2) 70 { 71 int fd[2]; 72 int ret; 73 74 fd[0] = socket(addr1->sa_family, SOCK_STREAM, 0); 75 ASSERT_GT(fd[0], 0); 76 77 ret = bind(fd[0], addr1, addrlen1); 78 ASSERT_EQ(ret, 0); 79 80 ret = getsockname(fd[0], addr1, &addrlen1); 81 ASSERT_EQ(ret, 0); 82 83 ((struct sockaddr_in *)addr2)->sin_port = ((struct sockaddr_in *)addr1)->sin_port; 84 85 fd[1] = socket(addr2->sa_family, SOCK_STREAM, 0); 86 ASSERT_GT(fd[1], 0); 87 88 ret = bind(fd[1], addr2, addrlen2); 89 if (expected_errno) { 90 ASSERT_EQ(ret, -1); 91 ASSERT_EQ(errno, expected_errno); 92 } else { 93 ASSERT_EQ(ret, 0); 94 } 95 96 close(fd[1]); 97 close(fd[0]); 98 } 99 100 TEST_F(bind_wildcard, v4_v6) 101 { 102 bind_sockets(_metadata, self, variant->expected_errno, 103 (struct sockaddr *)&self->addr4, sizeof(self->addr4), 104 (struct sockaddr *)&self->addr6, sizeof(self->addr6)); 105 } 106 107 TEST_F(bind_wildcard, v6_v4) 108 { 109 bind_sockets(_metadata, self, variant->expected_errno, 110 (struct sockaddr *)&self->addr6, sizeof(self->addr6), 111 (struct sockaddr *)&self->addr4, sizeof(self->addr4)); 112 } 113 114 TEST_HARNESS_MAIN 115