1 /* $NetBSD: writev.c,v 1.1.1.1 2011/04/13 18:15:44 elric Exp $ */
2
3 /*
4 * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include <config.h>
37
38 #include <krb5/roken.h>
39
40 ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL
writev(int d,const struct iovec * iov,int iovcnt)41 writev(int d, const struct iovec *iov, int iovcnt)
42 {
43 ssize_t ret;
44 size_t tot = 0;
45 int i;
46 char *buf, *p;
47
48 for(i = 0; i < iovcnt; ++i)
49 tot += iov[i].iov_len;
50 buf = malloc(tot);
51 if (tot != 0 && buf == NULL) {
52 errno = ENOMEM;
53 return -1;
54 }
55 p = buf;
56 for (i = 0; i < iovcnt; ++i) {
57 memcpy (p, iov[i].iov_base, iov[i].iov_len);
58 p += iov[i].iov_len;
59 }
60 ret = write (d, buf, tot);
61 free (buf);
62 return ret;
63 }
64