Differential D12554 Diff 34018 head/lib/libifconfig/libifconfig.c

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head/lib/libifconfig/libifconfig.c

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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY		* 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		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.		* SUCH DAMAGE.
*		*
* $FreeBSD$		* $FreeBSD$
*/		*/

		/*
		* Copyright 1996 Massachusetts Institute of Technology
		*
		* Permission to use, copy, modify, and distribute this software and
		* its documentation for any purpose and without fee is hereby
		* granted, provided that both the above copyright notice and this
		* permission notice appear in all copies, that both the above
		* copyright notice and this permission notice appear in all
		* supporting documentation, and that the name of M.I.T. not be used
		* in advertising or publicity pertaining to distribution of the
		* software without specific, written prior permission. M.I.T. makes
		* no representations about the suitability of this software for any
		* purpose. It is provided "as is" without express or implied
		* warranty.
		*
		* THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
		* ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
		* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
		* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
		* SHALL M.I.T. 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.
		*
		* $FreeBSD$
		*/

		#include <sys/types.h>
#include <sys/ioctl.h>		#include <sys/ioctl.h>
		#include <sys/sysctl.h>

#include <net/if.h>		#include <net/if.h>
		#include <net/if_mib.h>

#include <err.h>		#include <err.h>
#include <errno.h>		#include <errno.h>
#include <fcntl.h>		#include <fcntl.h>
#include <stdio.h>		#include <stdio.h>
#include <stdlib.h>		#include <stdlib.h>
#include <string.h>		#include <string.h>
#include <unistd.h>		#include <unistd.h>
▲ Show 20 Lines • Show All 165 Lines • ▼ Show 20 Lines	ifconfig_set_name(ifconfig_handle_t h, const char name, const char *newname)
if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCSIFNAME,		if (ifconfig_ioctlwrap(h, AF_LOCAL, SIOCSIFNAME,
&ifr) != 0) {		&ifr) != 0) {
free(tmpname);		free(tmpname);
return (-1);		return (-1);
}		}

free(tmpname);		free(tmpname);
return (0);		return (0);
		}

		int
		ifconfig_get_orig_name(ifconfig_handle_t h, const char ifname,
		char **orig_name)
		{
		struct ifmibdata ifmd;
		size_t len;
		int name[6];
		int i, maxifno;

		name[0] = CTL_NET;
		name[1] = PF_LINK;
		name[2] = NETLINK_GENERIC;
		name[3] = IFMIB_SYSTEM;
		name[4] = IFMIB_IFCOUNT;

		len = sizeof maxifno;
		if (sysctl(name, 5, &maxifno, &len, 0, 0) < 0) {
		h->error.errtype = OTHER;
		h->error.errcode = errno;
		return (-1);
		}

		name[3] = IFMIB_IFDATA;
		name[5] = IFDATA_GENERAL;
		for (i = 1; i <= maxifno; i++) {
		len = sizeof ifmd;
		name[4] = i;
		if (sysctl(name, 6, &ifmd, &len, 0, 0) < 0) {
		if (errno == ENOENT)
		continue;

		goto fail;
		}

		if (strncmp(ifmd.ifmd_name, ifname, IFNAMSIZ) != 0)
		continue;

		len = 0;
		name[5] = IFDATA_DRIVERNAME;
		if (sysctl(name, 6, NULL, &len, 0, 0) < 0)
		goto fail;

		*orig_name = malloc(len);
		if (*orig_name == NULL)
		goto fail;

		if (sysctl(name, 6, *orig_name, &len, 0, 0) < 0) {
		free(*orig_name);
		*orig_name = NULL;
		goto fail;
		}

		return (0);
		}

		fail:
		h->error.errtype = OTHER;
		h->error.errcode = (i <= maxifno) ? errno : ENOENT;
		return (-1);
}		}

int		int
ifconfig_set_mtu(ifconfig_handle_t h, const char name, const int mtu)		ifconfig_set_mtu(ifconfig_handle_t h, const char name, const int mtu)
{		{
struct ifreq ifr;		struct ifreq ifr;

memset(&ifr, 0, sizeof(ifr));		memset(&ifr, 0, sizeof(ifr));
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