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https://git.rtems.org/rtems-libbsd/
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75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*
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* Copyright (c) 2014 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <rtems/bsd/util.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if_dl.h>
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#include <errno.h>
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#include <ifaddrs.h>
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#include <string.h>
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int
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rtems_bsd_get_ethernet_addr(const char *ifname, uint8_t eaddr[ETHER_ADDR_LEN])
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{
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int rv;
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struct ifaddrs *ifa;
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rv = getifaddrs(&ifa);
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if (rv == 0) {
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struct ifaddrs *cur;
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for (cur = ifa; cur != NULL; cur = cur->ifa_next) {
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if (strcmp(cur->ifa_name, ifname) == 0 &&
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cur->ifa_addr->sa_family == AF_LINK) {
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const struct sockaddr_dl *dl =
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(const struct sockaddr_dl *) cur->ifa_addr;
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memcpy(&eaddr[0], LLADDR(dl), ETHER_ADDR_LEN);
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break;
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}
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}
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freeifaddrs(ifa);
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if (cur == NULL) {
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errno = ENXIO;
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rv = -1;
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}
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}
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return rv;
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}
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