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author | paul <paul> | 2002-12-13 20:15:29 +0000 |
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committer | paul <paul> | 2002-12-13 20:15:29 +0000 |
commit | 85f97d27207a5a29357da0c8a6abe8e48bf8ea2c (patch) | |
tree | d20e362762c4963f1150b224356643bd49df7dfb /zebra/rtread_sysctl.c | |
download | quagga-85f97d27207a5a29357da0c8a6abe8e48bf8ea2c.tar.bz2 quagga-85f97d27207a5a29357da0c8a6abe8e48bf8ea2c.tar.xz |
Initial revision
Diffstat (limited to 'zebra/rtread_sysctl.c')
-rw-r--r-- | zebra/rtread_sysctl.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/zebra/rtread_sysctl.c b/zebra/rtread_sysctl.c new file mode 100644 index 00000000..970c0aa1 --- /dev/null +++ b/zebra/rtread_sysctl.c @@ -0,0 +1,75 @@ +/* + * Kernel routing table read by sysctl function. + * Copyright (C) 1997, 98 Kunihiro Ishiguro + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Zebra; see the file COPYING. If not, write to the Free + * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ + +#include <zebra.h> + +#include "memory.h" +#include "log.h" + +/* Kernel routing table read up by sysctl function. */ +int +route_read () +{ + caddr_t buf, end, ref; + size_t bufsiz; + struct rt_msghdr *rtm; + void rtm_read (struct rt_msghdr *); + +#define MIBSIZ 6 + int mib[MIBSIZ] = + { + CTL_NET, + PF_ROUTE, + 0, + 0, + NET_RT_DUMP, + 0 + }; + + /* Get buffer size. */ + if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0) + { + zlog_warn ("sysctl fail: %s", strerror (errno)); + return -1; + } + + /* Allocate buffer. */ + ref = buf = XMALLOC (MTYPE_TMP, bufsiz); + + /* Read routing table information by calling sysctl(). */ + if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) + { + zlog_warn ("sysctl() fail by %s", strerror (errno)); + return -1; + } + + for (end = buf + bufsiz; buf < end; buf += rtm->rtm_msglen) + { + rtm = (struct rt_msghdr *) buf; + rtm_read (rtm); + } + + /* Free buffer. */ + XFREE (MTYPE_TMP, ref); + + return 0; +} |