1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <stdio.h> 30 #include <sys/types.h> 31 #include <net/if_ether.h> 32 33 /* 34 * Convert Ethernet address to standard hex-digits-and-colons printable form. 35 * Re-entrant version (GNU extensions). 36 */ 37 char * 38 ether_ntoa_r (const struct ether_addr *addr, char * buf) 39 { 40 snprintf(buf, 18, "%02x:%02x:%02x:%02x:%02x:%02x", 41 addr->ether_addr_octet[0], addr->ether_addr_octet[1], 42 addr->ether_addr_octet[2], addr->ether_addr_octet[3], 43 addr->ether_addr_octet[4], addr->ether_addr_octet[5]); 44 return buf; 45 } 46 47 /* 48 * Convert Ethernet address to standard hex-digits-and-colons printable form. 49 */ 50 char * 51 ether_ntoa (const struct ether_addr *addr) 52 { 53 static char buf[18]; 54 return ether_ntoa_r(addr, buf); 55 } 56
