1b528cefcSMark Murray /*
2b528cefcSMark Murray * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
3b528cefcSMark Murray * (Royal Institute of Technology, Stockholm, Sweden).
4b528cefcSMark Murray * All rights reserved.
5b528cefcSMark Murray *
6b528cefcSMark Murray * Redistribution and use in source and binary forms, with or without
7b528cefcSMark Murray * modification, are permitted provided that the following conditions
8b528cefcSMark Murray * are met:
9b528cefcSMark Murray *
10b528cefcSMark Murray * 1. Redistributions of source code must retain the above copyright
11b528cefcSMark Murray * notice, this list of conditions and the following disclaimer.
12b528cefcSMark Murray *
13b528cefcSMark Murray * 2. Redistributions in binary form must reproduce the above copyright
14b528cefcSMark Murray * notice, this list of conditions and the following disclaimer in the
15b528cefcSMark Murray * documentation and/or other materials provided with the distribution.
16b528cefcSMark Murray *
17b528cefcSMark Murray * 3. Neither the name of the Institute nor the names of its contributors
18b528cefcSMark Murray * may be used to endorse or promote products derived from this software
19b528cefcSMark Murray * without specific prior written permission.
20b528cefcSMark Murray *
21b528cefcSMark Murray * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22b528cefcSMark Murray * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23b528cefcSMark Murray * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24b528cefcSMark Murray * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25b528cefcSMark Murray * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26b528cefcSMark Murray * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27b528cefcSMark Murray * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28b528cefcSMark Murray * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29b528cefcSMark Murray * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30b528cefcSMark Murray * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31b528cefcSMark Murray * SUCH DAMAGE.
32b528cefcSMark Murray */
33b528cefcSMark Murray
34b528cefcSMark Murray #include <config.h>
35b528cefcSMark Murray
36c19800e8SDoug Rabson #include "roken.h"
37b528cefcSMark Murray
38b528cefcSMark Murray ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
recvmsg(int s,struct msghdr * msg,int flags)39b528cefcSMark Murray recvmsg(int s, struct msghdr *msg, int flags)
40b528cefcSMark Murray {
41c19800e8SDoug Rabson ssize_t ret, nb;
42b528cefcSMark Murray size_t tot = 0;
43b528cefcSMark Murray int i;
44b528cefcSMark Murray char *buf, *p;
45b528cefcSMark Murray struct iovec *iov = msg->msg_iov;
46b528cefcSMark Murray
47b528cefcSMark Murray for(i = 0; i < msg->msg_iovlen; ++i)
48b528cefcSMark Murray tot += iov[i].iov_len;
49b528cefcSMark Murray buf = malloc(tot);
50b528cefcSMark Murray if (tot != 0 && buf == NULL) {
51b528cefcSMark Murray errno = ENOMEM;
52b528cefcSMark Murray return -1;
53b528cefcSMark Murray }
54b528cefcSMark Murray nb = ret = recvfrom (s, buf, tot, flags, msg->msg_name, &msg->msg_namelen);
55b528cefcSMark Murray p = buf;
56b528cefcSMark Murray while (nb > 0) {
57b528cefcSMark Murray ssize_t cnt = min(nb, iov->iov_len);
58b528cefcSMark Murray
59b528cefcSMark Murray memcpy (iov->iov_base, p, cnt);
60b528cefcSMark Murray p += cnt;
61b528cefcSMark Murray nb -= cnt;
62b528cefcSMark Murray ++iov;
63b528cefcSMark Murray }
64b528cefcSMark Murray free(buf);
65b528cefcSMark Murray return ret;
66b528cefcSMark Murray }
67b528cefcSMark Murray