1 /* 2 * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifdef HAVE_CONFIG_H 35 #include <config.h> 36 RCSID("$Id: sendmsg.c,v 1.4 1999/12/02 16:58:52 joda Exp $"); 37 #endif 38 39 #include "roken.h" 40 41 ssize_t 42 sendmsg(int s, const struct msghdr *msg, int flags) 43 { 44 ssize_t ret; 45 size_t tot = 0; 46 int i; 47 char *buf, *p; 48 struct iovec *iov = msg->msg_iov; 49 50 for(i = 0; i < msg->msg_iovlen; ++i) 51 tot += iov[i].iov_len; 52 buf = malloc(tot); 53 if (tot != 0 && buf == NULL) { 54 errno = ENOMEM; 55 return -1; 56 } 57 p = buf; 58 for (i = 0; i < msg->msg_iovlen; ++i) { 59 memcpy (p, iov[i].iov_base, iov[i].iov_len); 60 p += iov[i].iov_len; 61 } 62 ret = sendto (s, buf, tot, flags, msg->msg_name, msg->msg_namelen); 63 free (buf); 64 return ret; 65 } 66