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shared: add format helpers for printing MAC addresses

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Use these in networctl.
This commit is contained in:
Tom Gundersen 2014-12-02 14:19:15 +01:00
parent e3286870fd
commit d8500c5378
3 changed files with 31 additions and 3 deletions
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1
Makefile.am
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@ -811,6 +811,7 @@ libsystemd_shared_la_SOURCES = \
src/shared/socket-util.h \
src/shared/in-addr-util.c \
src/shared/in-addr-util.h \
src/shared/ether-addr-util.h \
src/shared/conf-files.c \
src/shared/conf-files.h \
src/shared/cgroup-util.c \

6
src/network/networkctl.c
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@ -34,6 +34,7 @@
#include "arphrd-list.h"
#include "local-addresses.h"
#include "socket-util.h"
#include "ether-addr-util.h"
static bool arg_no_pager = false;
static bool arg_legend = true;
@ -251,14 +252,13 @@ static int list_links(char **args, unsigned n) {
static int ieee_oui(struct udev_hwdb *hwdb, struct ether_addr *mac, char **ret) {
struct udev_list_entry *entry;
char *description;
char str[32];
char str[strlen("OUI:XXYYXXYYXXYY") + 1];
/* skip commonly misused 00:00:00 (Xerox) prefix */
if (memcmp(mac, "\0\0\0", 3) == 0)
return -EINVAL;
snprintf(str, sizeof(str), "OUI:%02X%02X%02X%02X%02X%02X", mac->ether_addr_octet[0], mac->ether_addr_octet[1], mac->ether_addr_octet[2],
mac->ether_addr_octet[3], mac->ether_addr_octet[4], mac->ether_addr_octet[5]);
snprintf(str, sizeof(str), "OUI:" ETHER_ADDR_FORMAT_STR, ETHER_ADDR_FORMAT_VAL(*mac));
udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, str, 0))
if (strcmp(udev_list_entry_get_name(entry), "ID_OUI_FROM_DATABASE") == 0) {

27
src/shared/ether-addr-util.h Normal file
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@ -0,0 +1,27 @@
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#pragma once
/***
This file is part of systemd.
Copyright 2014 Tom Gundersen
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <net/ethernet.h>
#define ETHER_ADDR_FORMAT_STR "%02X%02X%02X%02X%02X%02X"
#define ETHER_ADDR_FORMAT_VAL(x) (x).ether_addr_octet[0], (x).ether_addr_octet[1], (x).ether_addr_octet[2], (x).ether_addr_octet[3], (x).ether_addr_octet[4], (x).ether_addr_octet[5]