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896014f4bc
The FSF's address changed, and we had a mixture of comment styles for the GPL file header. (The style with * at the beginning won out with 580 to 141 in existing files.) Note: I've intentionally left intact other "variations" of the copyright header, e.g. whether it says "Zebra", "Quagga", "FRR", or nothing. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/*
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* Kernel routing table read by sysctl function.
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* Copyright (C) 1997, 98 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra 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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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <zebra.h>
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#include "memory.h"
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#include "zebra_memory.h"
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#include "log.h"
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#include "vrf.h"
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#include "zebra/zserv.h"
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#include "zebra/rt.h"
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#include "zebra/kernel_socket.h"
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/* Kernel routing table read up by sysctl function. */
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void
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route_read (struct zebra_ns *zns)
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{
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caddr_t buf, end, ref;
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size_t bufsiz;
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struct rt_msghdr *rtm;
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#define MIBSIZ 6
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int mib[MIBSIZ] =
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{
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CTL_NET,
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PF_ROUTE,
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0,
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0,
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NET_RT_DUMP,
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0
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};
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if (zns->ns_id != NS_DEFAULT)
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return;
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/* Get buffer size. */
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if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
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{
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zlog_warn ("sysctl fail: %s", safe_strerror (errno));
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return;
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}
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/* Allocate buffer. */
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ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
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/* Read routing table information by calling sysctl(). */
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if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
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{
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zlog_warn ("sysctl() fail by %s", safe_strerror (errno));
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XFREE(MTYPE_TMP, ref);
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return;
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}
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for (end = buf + bufsiz; buf < end; buf += rtm->rtm_msglen)
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{
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rtm = (struct rt_msghdr *) buf;
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/* We must set RTF_DONE here, so rtm_read() doesn't ignore the message. */
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SET_FLAG (rtm->rtm_flags, RTF_DONE);
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rtm_read (rtm);
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}
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/* Free buffer. */
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XFREE (MTYPE_TMP, ref);
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return;
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}
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