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git.proxmox.com Git - mirror_frr.git/blob - zebra/rtread_sysctl.c
2 * Kernel routing table read by sysctl function.
3 * Copyright (C) 1997, 98 Kunihiro Ishiguro
5 * This file is part of GNU Zebra.
7 * GNU Zebra is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Zebra; see the file COPYING. If not, write to the Free
19 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
29 #include "zebra/zserv.h"
31 #include "zebra/kernel_socket.h"
33 /* Kernel routing table read up by sysctl function. */
35 route_read (struct zebra_vrf
*zvrf
)
37 caddr_t buf
, end
, ref
;
39 struct rt_msghdr
*rtm
;
52 if (zvrf
->vrf_id
!= VRF_DEFAULT
)
55 /* Get buffer size. */
56 if (sysctl (mib
, MIBSIZ
, NULL
, &bufsiz
, NULL
, 0) < 0)
58 zlog_warn ("sysctl fail: %s", safe_strerror (errno
));
62 /* Allocate buffer. */
63 ref
= buf
= XMALLOC (MTYPE_TMP
, bufsiz
);
65 /* Read routing table information by calling sysctl(). */
66 if (sysctl (mib
, MIBSIZ
, buf
, &bufsiz
, NULL
, 0) < 0)
68 zlog_warn ("sysctl() fail by %s", safe_strerror (errno
));
69 XFREE(MTYPE_TMP
, ref
);
73 for (end
= buf
+ bufsiz
; buf
< end
; buf
+= rtm
->rtm_msglen
)
75 rtm
= (struct rt_msghdr
*) buf
;
76 /* We must set RTF_DONE here, so rtm_read() doesn't ignore the message. */
77 SET_FLAG (rtm
->rtm_flags
, RTF_DONE
);
82 XFREE (MTYPE_TMP
, ref
);