1 /* $NetBSD: intoa.c,v 1.3 2009/03/14 15:36:22 dsl Exp $ */
2
3 /*
4 * Copyright (c) 1992 Regents of the University of California.
5 * All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Lawrence Berkeley Laboratory and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 * @(#) Header: net.c,v 1.9 93/08/06 19:32:15 leres Exp (LBL)
40 */
41
42 #include <sys/types.h>
43
44 #if defined(_KERNEL) || defined(_STANDALONE)
45 #include <lib/libkern/libkern.h>
46 #else
47 char *intoa(u_int32_t); /* XXX */
48 #endif
49
50 /* Similar to inet_ntoa() */
51 char *
intoa(u_int32_t addr)52 intoa(u_int32_t addr)
53 {
54 char *cp;
55 u_int byte;
56 int n;
57 static char buf[17]; /* strlen(".255.255.255.255") + 1 */
58
59 addr = ntohl(addr);
60 cp = &buf[sizeof buf];
61 *--cp = '\0';
62
63 n = 4;
64 do {
65 byte = addr & 0xff;
66 *--cp = byte % 10 + '0';
67 byte /= 10;
68 if (byte > 0) {
69 *--cp = byte % 10 + '0';
70 byte /= 10;
71 if (byte > 0)
72 *--cp = byte + '0';
73 }
74 *--cp = '.';
75 addr >>= 8;
76 } while (--n > 0);
77
78 return (cp+1);
79 }
80