1 /* 2 * Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved. 3 * 4 * This program is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU General Public License as 6 * published by the Free Software Foundation; either version 2 of 7 * the License, or (at your option) any later version. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 #include <sys/types.h> 20 #include <sys/socket.h> 21 #include <netinet/ip.h> 22 #include <string.h> 23 #include <unistd.h> 24 #include <errno.h> 25 26 int bound_socket(int domain, int type) 27 { 28 int sock; 29 struct sockaddr_storage addr; 30 struct sockaddr_in *addr4 = (struct sockaddr_in *)&addr; 31 struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)&addr; 32 socklen_t slen; 33 34 switch (domain) { 35 case AF_INET: 36 addr4->sin_family = AF_INET; 37 addr4->sin_port = 0; 38 addr4->sin_addr.s_addr = INADDR_ANY; 39 slen = sizeof(*addr4); 40 break; 41 42 case AF_INET6: 43 addr6->sin6_family = AF_INET6; 44 addr6->sin6_port = 0; 45 addr6->sin6_addr = in6addr_any; 46 slen = sizeof(*addr6); 47 break; 48 49 default: 50 errno = EAFNOSUPPORT; 51 return -1; 52 } 53 54 if ((type != SOCK_STREAM) && (type != SOCK_DGRAM)) { 55 errno = EINVAL; 56 return -1; 57 } 58 59 sock = socket(domain, type, 0); 60 if (sock < 0) 61 return -1; 62 63 if (bind(sock, (struct sockaddr *)&addr, slen) < 0) { 64 close(sock); 65 return -1; 66 } 67 68 return sock; 69 } 70
