1 /* 2 * Check decoding of sockname family syscalls. 3 * 4 * Copyright (c) 2016 Dmitry V. Levin <ldv (at) altlinux.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include "tests.h" 31 #include <stddef.h> 32 #include <stdio.h> 33 #include <string.h> 34 #include <signal.h> 35 #include <unistd.h> 36 #include <sys/wait.h> 37 #include <sys/socket.h> 38 #include <sys/un.h> 39 40 #ifndef TEST_SYSCALL_NAME 41 # error TEST_SYSCALL_NAME must be defined 42 #endif 43 44 #define TEST_SYSCALL_STR__(a) #a 45 #define TEST_SYSCALL_STR_(a) TEST_SYSCALL_STR__(a) 46 #define TEST_SYSCALL_STR TEST_SYSCALL_STR_(TEST_SYSCALL_NAME) 47 #define TEST_SOCKET TEST_SYSCALL_STR ".socket" 48 49 #ifdef TEST_SYSCALL_PREPARE 50 # define PREPARE_TEST_SYSCALL_INVOCATION do { TEST_SYSCALL_PREPARE; } while (0) 51 #else 52 # define PREPARE_TEST_SYSCALL_INVOCATION do {} while (0) 53 #endif 54 55 #ifndef PREFIX_S_ARGS 56 # define PREFIX_S_ARGS 57 #endif 58 #ifndef PREFIX_F_ARGS 59 # define PREFIX_F_ARGS 60 #endif 61 #ifndef PREFIX_S_STR 62 # define PREFIX_S_STR "" 63 #endif 64 #ifndef PREFIX_F_STR 65 # define PREFIX_F_STR "" 66 #endif 67 #ifndef SUFFIX_ARGS 68 # define SUFFIX_ARGS 69 #endif 70 #ifndef SUFFIX_STR 71 # define SUFFIX_STR "" 72 #endif 73 74 static void 75 test_sockname_syscall(const int fd) 76 { 77 socklen_t *const plen = tail_alloc(sizeof(*plen)); 78 *plen = sizeof(struct sockaddr_un); 79 struct sockaddr_un *addr = tail_alloc(*plen); 80 81 PREPARE_TEST_SYSCALL_INVOCATION; 82 int rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, (void *) addr, 83 plen SUFFIX_ARGS); 84 if (rc < 0) 85 perror_msg_and_skip(TEST_SYSCALL_STR); 86 printf("%s(%d%s, {sa_family=AF_UNIX, sun_path=\"%s\"}" 87 ", [%d->%d]%s) = %d\n", 88 TEST_SYSCALL_STR, fd, PREFIX_S_STR, addr->sun_path, 89 (int) sizeof(struct sockaddr_un), (int) *plen, SUFFIX_STR, rc); 90 91 memset(addr, 0, sizeof(*addr)); 92 PREPARE_TEST_SYSCALL_INVOCATION; 93 rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, (void *) addr, 94 plen SUFFIX_ARGS); 95 if (rc < 0) 96 perror_msg_and_skip(TEST_SYSCALL_STR); 97 printf("%s(%d%s, {sa_family=AF_UNIX, sun_path=\"%s\"}" 98 ", [%d]%s) = %d\n", 99 TEST_SYSCALL_STR, fd, PREFIX_S_STR, addr->sun_path, 100 (int) *plen, SUFFIX_STR, rc); 101 102 PREPARE_TEST_SYSCALL_INVOCATION; 103 rc = TEST_SYSCALL_NAME(fd PREFIX_F_ARGS, (void *) addr, 0 SUFFIX_ARGS); 104 printf("%s(%d%s, %p, NULL%s) = %s\n", 105 TEST_SYSCALL_STR, fd, PREFIX_F_STR, addr, SUFFIX_STR, 106 sprintrc(rc)); 107 108 PREPARE_TEST_SYSCALL_INVOCATION; 109 rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, 0, 0 SUFFIX_ARGS); 110 printf("%s(%d%s, NULL, NULL%s) = %s\n", 111 TEST_SYSCALL_STR, fd, rc == -1 ? PREFIX_F_STR : PREFIX_S_STR, 112 SUFFIX_STR, sprintrc(rc)); 113 114 PREPARE_TEST_SYSCALL_INVOCATION; 115 rc = TEST_SYSCALL_NAME(fd PREFIX_F_ARGS, (void *) addr, 116 plen + 1 SUFFIX_ARGS); 117 printf("%s(%d%s, %p, %p%s) = %s\n", 118 TEST_SYSCALL_STR, fd, PREFIX_F_STR, addr, 119 plen + 1, SUFFIX_STR, sprintrc(rc)); 120 121 const size_t offsetof_sun_path = offsetof(struct sockaddr_un, sun_path); 122 *plen = offsetof_sun_path; 123 memset(addr->sun_path, 'A', sizeof(addr->sun_path)); 124 125 PREPARE_TEST_SYSCALL_INVOCATION; 126 rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, (void *) addr, 127 plen SUFFIX_ARGS); 128 if (rc < 0) 129 perror_msg_and_skip(TEST_SYSCALL_STR); 130 printf("%s(%d%s, {sa_family=AF_UNIX}, [%d->%d]%s) = %d\n", 131 TEST_SYSCALL_STR, fd, PREFIX_S_STR, 132 (int) offsetof_sun_path, (int) *plen, SUFFIX_STR, rc); 133 134 ++addr; 135 *plen = sizeof(struct sockaddr); 136 addr = (void *) addr - *plen; 137 138 PREPARE_TEST_SYSCALL_INVOCATION; 139 rc = TEST_SYSCALL_NAME(fd PREFIX_S_ARGS, (void *) addr, 140 plen SUFFIX_ARGS); 141 if (rc < 0) 142 perror_msg_and_skip(TEST_SYSCALL_STR); 143 printf("%s(%d%s, {sa_family=AF_UNIX, sun_path=\"%.*s\"}" 144 ", [%d->%d]%s) = %d\n", 145 TEST_SYSCALL_STR, fd, PREFIX_S_STR, 146 (int) (sizeof(struct sockaddr) - offsetof_sun_path), 147 addr->sun_path, (int) sizeof(struct sockaddr), 148 (int) *plen, SUFFIX_STR, rc); 149 150 PREPARE_TEST_SYSCALL_INVOCATION; 151 rc = TEST_SYSCALL_NAME(fd PREFIX_F_ARGS, (void *) addr, 152 plen SUFFIX_ARGS); 153 printf("%s(%d%s, %p, [%d]%s) = %s\n", 154 TEST_SYSCALL_STR, fd, PREFIX_F_STR, addr, 155 *plen, SUFFIX_STR, sprintrc(rc)); 156 } 157
