1 /* $NetBSD: intoa.c,v 1.1 1999/05/07 14:49:52 drochner 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 __P((u_int32_t)); /* XXX */ 48 #endif 49 50 /* Similar to inet_ntoa() */ 51 char * 52 intoa(addr) 53 u_int32_t addr; 54 { 55 char *cp; 56 u_int byte; 57 int n; 58 static char buf[17]; /* strlen(".255.255.255.255") + 1 */ 59 60 addr = ntohl(addr); 61 cp = &buf[sizeof buf]; 62 *--cp = '\0'; 63 64 n = 4; 65 do { 66 byte = addr & 0xff; 67 *--cp = byte % 10 + '0'; 68 byte /= 10; 69 if (byte > 0) { 70 *--cp = byte % 10 + '0'; 71 byte /= 10; 72 if (byte > 0) 73 *--cp = byte + '0'; 74 } 75 *--cp = '.'; 76 addr >>= 8; 77 } while (--n > 0); 78 79 return (cp+1); 80 } 81