bionic/libc/bionic/ether_ntoa.c
Elliott Hughes a89864a20b Move non-upstream code into the libc/bionic directory.
I'll need at least one more pass, because there's some upstream code
lurking in libc/bionic, but this is still a step in the right direction.

Change-Id: I55927315972da8327ae01c5240ed587db17e8462
2012-10-01 17:35:49 -07:00

56 lines
2.1 KiB
C

/*
* Copyright (C) 2010 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <sys/types.h>
#include <net/if_ether.h>
/*
* Convert Ethernet address to standard hex-digits-and-colons printable form.
* Re-entrant version (GNU extensions).
*/
char *
ether_ntoa_r (const struct ether_addr *addr, char * buf)
{
snprintf(buf, 18, "%02x:%02x:%02x:%02x:%02x:%02x",
addr->ether_addr_octet[0], addr->ether_addr_octet[1],
addr->ether_addr_octet[2], addr->ether_addr_octet[3],
addr->ether_addr_octet[4], addr->ether_addr_octet[5]);
return buf;
}
/*
* Convert Ethernet address to standard hex-digits-and-colons printable form.
*/
char *
ether_ntoa (const struct ether_addr *addr)
{
static char buf[18];
return ether_ntoa_r(addr, buf);
}