ospfd: Tighten up the connected check for redistribution
[jleu-quagga.git] / zebra / if_sysctl.c
blob5e8099647959e7071e0dafc28559dc346ad79d85
1 /*
2 * Get interface's address and mask information 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
10 * later version.
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
20 * 02111-1307, USA.
23 #include <zebra.h>
25 #include "if.h"
26 #include "sockunion.h"
27 #include "prefix.h"
28 #include "connected.h"
29 #include "memory.h"
30 #include "ioctl.h"
31 #include "log.h"
33 #include "zebra/rt.h"
34 #include "zebra/kernel_socket.h"
36 void
37 ifstat_update_sysctl (void)
39 caddr_t ref, buf, end;
40 size_t bufsiz;
41 struct if_msghdr *ifm;
42 struct interface *ifp;
44 #define MIBSIZ 6
45 int mib[MIBSIZ] =
47 CTL_NET,
48 PF_ROUTE,
50 0, /* AF_INET & AF_INET6 */
51 NET_RT_IFLIST,
55 /* Query buffer size. */
56 if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
58 zlog_warn ("sysctl() error by %s", safe_strerror (errno));
59 return;
62 /* We free this memory at the end of this function. */
63 ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
65 /* Fetch interface informations into allocated buffer. */
66 if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
68 zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
69 return;
72 /* Parse both interfaces and addresses. */
73 for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
75 ifm = (struct if_msghdr *) buf;
76 if (ifm->ifm_type == RTM_IFINFO)
78 ifp = if_lookup_by_index (ifm->ifm_index);
79 if (ifp)
80 ifp->stats = ifm->ifm_data;
84 /* Free sysctl buffer. */
85 XFREE (MTYPE_TMP, ref);
87 return;
90 /* Interface listing up function using sysctl(). */
91 void
92 interface_list ()
94 caddr_t ref, buf, end;
95 size_t bufsiz;
96 struct if_msghdr *ifm;
98 #define MIBSIZ 6
99 int mib[MIBSIZ] =
101 CTL_NET,
102 PF_ROUTE,
104 0, /* AF_INET & AF_INET6 */
105 NET_RT_IFLIST,
109 /* Query buffer size. */
110 if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
112 zlog (NULL, LOG_WARNING, "sysctl() error by %s", safe_strerror (errno));
113 return;
116 /* We free this memory at the end of this function. */
117 ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
119 /* Fetch interface informations into allocated buffer. */
120 if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
122 zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
123 return;
126 /* Parse both interfaces and addresses. */
127 for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
129 ifm = (struct if_msghdr *) buf;
131 switch (ifm->ifm_type)
133 case RTM_IFINFO:
134 ifm_read (ifm);
135 break;
136 case RTM_NEWADDR:
137 ifam_read ((struct ifa_msghdr *) ifm);
138 break;
139 default:
140 zlog_info ("interfaces_list(): unexpected message type");
141 XFREE (MTYPE_TMP, ref);
142 return;
143 break;
147 /* Free sysctl buffer. */
148 XFREE (MTYPE_TMP, ref);