56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
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/***
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This file is part of systemd.
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Copyright 2012 Kay Sievers <kay@vrfy.org>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include "udev.h"
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/* IEEE Organizationally Unique Identifier */
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static int lookup_OUI(struct udev_device *dev, bool test) {
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const char *addr;
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unsigned int a1, a2, a3;
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char oui[16];
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addr = udev_device_get_sysattr_value(dev, "address");
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if (!addr)
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return -ENOENT;
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if (sscanf(addr, "%x:%x:%x:", &a1, &a2, &a3) != 3)
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return -EINVAL;
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snprintf(oui, sizeof(oui), "OUI:%X%X%X", a1, a2, a3);
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return udev_builtin_hwdb_lookup(dev, oui, test);
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}
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static int builtin_net_id(struct udev_device *dev, int argc, char *argv[], bool test) {
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lookup_OUI(dev, test);
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return EXIT_SUCCESS;
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}
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const struct udev_builtin udev_builtin_net_id = {
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.name = "net_id",
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.cmd = builtin_net_id,
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.help = "network device properties",
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};
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