Annotation of embedaddon/quagga/zebra/if_sysctl.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Get interface's address and mask information by sysctl() function.
! 3: * Copyright (C) 1997, 98 Kunihiro Ishiguro
! 4: *
! 5: * This file is part of GNU Zebra.
! 6: *
! 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.
! 11: *
! 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.
! 16: *
! 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.
! 21: */
! 22:
! 23: #include <zebra.h>
! 24:
! 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"
! 32:
! 33: #include "zebra/rt.h"
! 34: #include "zebra/kernel_socket.h"
! 35:
! 36: void
! 37: ifstat_update_sysctl (void)
! 38: {
! 39: caddr_t ref, buf, end;
! 40: size_t bufsiz;
! 41: struct if_msghdr *ifm;
! 42: struct interface *ifp;
! 43:
! 44: #define MIBSIZ 6
! 45: int mib[MIBSIZ] =
! 46: {
! 47: CTL_NET,
! 48: PF_ROUTE,
! 49: 0,
! 50: 0, /* AF_INET & AF_INET6 */
! 51: NET_RT_IFLIST,
! 52: 0
! 53: };
! 54:
! 55: /* Query buffer size. */
! 56: if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
! 57: {
! 58: zlog_warn ("sysctl() error by %s", safe_strerror (errno));
! 59: return;
! 60: }
! 61:
! 62: /* We free this memory at the end of this function. */
! 63: ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
! 64:
! 65: /* Fetch interface informations into allocated buffer. */
! 66: if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
! 67: {
! 68: zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
! 69: return;
! 70: }
! 71:
! 72: /* Parse both interfaces and addresses. */
! 73: for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
! 74: {
! 75: ifm = (struct if_msghdr *) buf;
! 76: if (ifm->ifm_type == RTM_IFINFO)
! 77: {
! 78: ifp = if_lookup_by_index (ifm->ifm_index);
! 79: if (ifp)
! 80: ifp->stats = ifm->ifm_data;
! 81: }
! 82: }
! 83:
! 84: /* Free sysctl buffer. */
! 85: XFREE (MTYPE_TMP, ref);
! 86:
! 87: return;
! 88: }
! 89:
! 90: /* Interface listing up function using sysctl(). */
! 91: void
! 92: interface_list ()
! 93: {
! 94: caddr_t ref, buf, end;
! 95: size_t bufsiz;
! 96: struct if_msghdr *ifm;
! 97:
! 98: #define MIBSIZ 6
! 99: int mib[MIBSIZ] =
! 100: {
! 101: CTL_NET,
! 102: PF_ROUTE,
! 103: 0,
! 104: 0, /* AF_INET & AF_INET6 */
! 105: NET_RT_IFLIST,
! 106: 0
! 107: };
! 108:
! 109: /* Query buffer size. */
! 110: if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
! 111: {
! 112: zlog (NULL, LOG_WARNING, "sysctl() error by %s", safe_strerror (errno));
! 113: return;
! 114: }
! 115:
! 116: /* We free this memory at the end of this function. */
! 117: ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
! 118:
! 119: /* Fetch interface informations into allocated buffer. */
! 120: if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
! 121: {
! 122: zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
! 123: return;
! 124: }
! 125:
! 126: /* Parse both interfaces and addresses. */
! 127: for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
! 128: {
! 129: ifm = (struct if_msghdr *) buf;
! 130:
! 131: switch (ifm->ifm_type)
! 132: {
! 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;
! 144: }
! 145: }
! 146:
! 147: /* Free sysctl buffer. */
! 148: XFREE (MTYPE_TMP, ref);
! 149: }
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