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 struct in6_addr in6addr_v4mapped_any = { 10 .s6_addr = { 11 0, 0, 0, 0, 12 0, 0, 0, 0, 13 0, 0, 255, 255, 14 0, 0, 0, 0 15 } 16 }; 17 18 struct in6_addr in6addr_v4mapped_loopback = { 19 .s6_addr = { 20 0, 0, 0, 0, 21 0, 0, 0, 0, 22 0, 0, 255, 255, 23 127, 0, 0, 1 24 } 25 }; 26 27 FIXTURE(bind_wildcard) 28 { 29 struct sockaddr_in addr4; 30 struct sockaddr_in6 addr6; 31 }; 32 33 FIXTURE_VARIANT(bind_wildcard) 34 { 35 const __u32 addr4_const; 36 const struct in6_addr *addr6_const; 37 int expected_errno; 38 }; 39 40 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_any) 41 { 42 .addr4_const = INADDR_ANY, 43 .addr6_const = &in6addr_any, 44 .expected_errno = EADDRINUSE, 45 }; 46 47 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_local) 48 { 49 .addr4_const = INADDR_ANY, 50 .addr6_const = &in6addr_loopback, 51 .expected_errno = 0, 52 }; 53 54 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_v4mapped_any) 55 { 56 .addr4_const = INADDR_ANY, 57 .addr6_const = &in6addr_v4mapped_any, 58 .expected_errno = EADDRINUSE, 59 }; 60 61 FIXTURE_VARIANT_ADD(bind_wildcard, v4_any_v6_v4mapped_local) 62 { 63 .addr4_const = INADDR_ANY, 64 .addr6_const = &in6addr_v4mapped_loopback, 65 .expected_errno = EADDRINUSE, 66 }; 67 68 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_any) 69 { 70 .addr4_const = INADDR_LOOPBACK, 71 .addr6_const = &in6addr_any, 72 .expected_errno = EADDRINUSE, 73 }; 74 75 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_local) 76 { 77 .addr4_const = INADDR_LOOPBACK, 78 .addr6_const = &in6addr_loopback, 79 .expected_errno = 0, 80 }; 81 82 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_v4mapped_any) 83 { 84 .addr4_const = INADDR_LOOPBACK, 85 .addr6_const = &in6addr_v4mapped_any, 86 .expected_errno = EADDRINUSE, 87 }; 88 89 FIXTURE_VARIANT_ADD(bind_wildcard, v4_local_v6_v4mapped_local) 90 { 91 .addr4_const = INADDR_LOOPBACK, 92 .addr6_const = &in6addr_v4mapped_loopback, 93 .expected_errno = EADDRINUSE, 94 }; 95 96 FIXTURE_SETUP(bind_wildcard) 97 { 98 self->addr4.sin_family = AF_INET; 99 self->addr4.sin_port = htons(0); 100 self->addr4.sin_addr.s_addr = htonl(variant->addr4_const); 101 102 self->addr6.sin6_family = AF_INET6; 103 self->addr6.sin6_port = htons(0); 104 self->addr6.sin6_addr = *variant->addr6_const; 105 } 106 107 FIXTURE_TEARDOWN(bind_wildcard) 108 { 109 } 110 111 void bind_sockets(struct __test_metadata *_metadata, 112 FIXTURE_DATA(bind_wildcard) *self, 113 int expected_errno, 114 struct sockaddr *addr1, socklen_t addrlen1, 115 struct sockaddr *addr2, socklen_t addrlen2) 116 { 117 int fd[2]; 118 int ret; 119 120 fd[0] = socket(addr1->sa_family, SOCK_STREAM, 0); 121 ASSERT_GT(fd[0], 0); 122 123 ret = bind(fd[0], addr1, addrlen1); 124 ASSERT_EQ(ret, 0); 125 126 ret = getsockname(fd[0], addr1, &addrlen1); 127 ASSERT_EQ(ret, 0); 128 129 ((struct sockaddr_in *)addr2)->sin_port = ((struct sockaddr_in *)addr1)->sin_port; 130 131 fd[1] = socket(addr2->sa_family, SOCK_STREAM, 0); 132 ASSERT_GT(fd[1], 0); 133 134 ret = bind(fd[1], addr2, addrlen2); 135 if (expected_errno) { 136 ASSERT_EQ(ret, -1); 137 ASSERT_EQ(errno, expected_errno); 138 } else { 139 ASSERT_EQ(ret, 0); 140 } 141 142 close(fd[1]); 143 close(fd[0]); 144 } 145 146 TEST_F(bind_wildcard, v4_v6) 147 { 148 bind_sockets(_metadata, self, variant->expected_errno, 149 (struct sockaddr *)&self->addr4, sizeof(self->addr4), 150 (struct sockaddr *)&self->addr6, sizeof(self->addr6)); 151 } 152 153 TEST_F(bind_wildcard, v6_v4) 154 { 155 bind_sockets(_metadata, self, variant->expected_errno, 156 (struct sockaddr *)&self->addr6, sizeof(self->addr6), 157 (struct sockaddr *)&self->addr4, sizeof(self->addr4)); 158 } 159 160 TEST_HARNESS_MAIN 161