57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
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/*
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* Linux ioctl helper functions for driver wrappers
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* Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#include "utils/includes.h"
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#include <sys/ioctl.h>
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#include <net/if.h>
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#include "utils/common.h"
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#include "linux_ioctl.h"
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int linux_set_iface_flags(int sock, const char *ifname, int dev_up)
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{
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struct ifreq ifr;
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if (sock < 0)
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return -1;
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os_memset(&ifr, 0, sizeof(ifr));
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os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
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if (ioctl(sock, SIOCGIFFLAGS, &ifr) != 0) {
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wpa_printf(MSG_ERROR, "Could not read interface %s flags: %s",
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ifname, strerror(errno));
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return -1;
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}
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if (dev_up) {
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if (ifr.ifr_flags & IFF_UP)
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return 0;
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ifr.ifr_flags |= IFF_UP;
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} else {
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if (!(ifr.ifr_flags & IFF_UP))
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return 0;
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ifr.ifr_flags &= ~IFF_UP;
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}
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if (ioctl(sock, SIOCSIFFLAGS, &ifr) != 0) {
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wpa_printf(MSG_ERROR, "Could not set interface %s flags: %s",
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ifname, strerror(errno));
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return -1;
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}
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return 0;
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}
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