File Manager

003 File Manager

Current Path: /usr/src/lib/libc/net

📁 ..
📄 Makefile.inc(5.08 KB)
📄 Symbol.map(2.8 KB)
📄 base64.c(10.39 KB)
📄 byteorder.3(2.74 KB)
📄 ether_addr.c(5.68 KB)
📄 ethers.3(5.85 KB)
📄 eui64.3(6.37 KB)
📄 eui64.c(8.3 KB)
📄 gai_strerror.3(2.49 KB)
📄 gai_strerror.c(3.98 KB)
📄 getaddrinfo.3(12.12 KB)
📄 getaddrinfo.c(70.2 KB)
📄 gethostbydns.c(19.1 KB)
📄 gethostbyht.c(9.04 KB)
📄 gethostbyname.3(8.74 KB)
📄 gethostbynis.c(6.94 KB)
📄 gethostnamadr.c(17.01 KB)
📄 getifaddrs.3(4.24 KB)
📄 getifaddrs.c(8.57 KB)
📄 getifmaddrs.3(3 KB)
📄 getifmaddrs.c(4.79 KB)
📄 getipnodebyname.3(10.04 KB)
📄 getnameinfo.3(7.6 KB)
📄 getnameinfo.c(13.68 KB)
📄 getnetbydns.c(12 KB)
📄 getnetbyht.c(7.18 KB)
📄 getnetbynis.c(6.09 KB)
📄 getnetent.3(4.36 KB)
📄 getnetnamadr.c(10.46 KB)
📄 getproto.c(3.87 KB)
📄 getprotoent.3(3.78 KB)
📄 getprotoent.c(12.22 KB)
📄 getprotoname.c(4.25 KB)
📄 getservent.3(4.13 KB)
📄 getservent.c(29.69 KB)
📄 hesiod.3(4.19 KB)
📄 hesiod.c(12.17 KB)
📄 hosts(1.01 KB)
📄 hosts.equiv(53 B)
📄 if_indextoname.3(3.94 KB)
📄 if_indextoname.c(2.94 KB)
📄 if_nameindex.c(4.21 KB)
📄 if_nametoindex.c(2.84 KB)
📄 inet.3(7.76 KB)
📄 inet6_opt_init.3(9.07 KB)
📄 inet6_option_space.3(2.18 KB)
📄 inet6_rth_space.3(6.86 KB)
📄 inet6_rthdr_space.3(2.22 KB)
📄 inet_net.3(5.01 KB)
📄 ip6opt.c(15.36 KB)
📄 linkaddr.3(3.94 KB)
📄 linkaddr.c(4.44 KB)
📄 map_v4v6.c(3.93 KB)
📄 name6.c(28.18 KB)
📄 netdb_private.h(5.2 KB)
📄 networks(310 B)
📄 nscache.c(10.91 KB)
📄 nscachedcli.c(14.18 KB)
📄 nsdispatch.3(6.25 KB)
📄 nsdispatch.c(20.3 KB)
📄 nslexer.l(3.01 KB)
📄 nsparser.y(3.91 KB)
📄 nss_backends.h(2.04 KB)
📄 nss_compat.c(7.93 KB)
📄 nsswitch.conf(272 B)
📄 ntoh.c(1.75 KB)
📄 protocols(6.24 KB)
📄 rcmd.3(8.14 KB)
📄 rcmd.c(18.57 KB)
📄 rcmdsh.3(3.23 KB)
📄 rcmdsh.c(4.95 KB)
📄 recv.c(2.22 KB)
📄 res_config.h(299 B)
📄 resolver.3(11.43 KB)
📄 rthdr.c(9.7 KB)
📄 sctp_bindx.3(3.47 KB)
📄 sctp_connectx.3(3.44 KB)
📄 sctp_freepaddrs.3(2.26 KB)
📄 sctp_getaddrlen.3(2.82 KB)
📄 sctp_getassocid.3(2.44 KB)
📄 sctp_getpaddrs.3(3.11 KB)
📄 sctp_opt_info.3(3.55 KB)
📄 sctp_recvmsg.3(8.43 KB)
📄 sctp_send.3(11.12 KB)
📄 sctp_sendmsg.3(10.45 KB)
📄 sctp_sys_calls.c(30.35 KB)
📄 send.c(2.23 KB)
📄 sockatmark.3(3.26 KB)
📄 sockatmark.c(1.59 KB)
📄 sourcefilter.3(6.38 KB)
📄 sourcefilter.c(9.71 KB)
📄 vars.c(2.07 KB)

Editing: getifaddrs.c

/*	$KAME: getifaddrs.c,v 1.9 2001/08/20 02:31:20 itojun Exp $	*/

/*-
 * SPDX-License-Identifier: BSD-1-Clause
 *
 * Copyright (c) 1995, 1999
 *	Berkeley Software Design, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	BSDI getifaddrs.c,v 2.12 2000/02/23 14:51:59 dab Exp
 */
/*
 * NOTE: SIOCGIFCONF case is not LP64 friendly.  it also does not perform
 * try-and-error for region size.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include "namespace.h"
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <net/if.h>
#ifdef	NET_RT_IFLIST
#include <sys/param.h>
#include <net/route.h>
#include <sys/sysctl.h>
#include <net/if_dl.h>
#endif

#include <errno.h>
#include <ifaddrs.h>
#include <stdlib.h>
#include <string.h>
#include "un-namespace.h"

#if !defined(AF_LINK)
#define	SA_LEN(sa)	sizeof(struct sockaddr)
#endif

#if !defined(SA_LEN)
#define	SA_LEN(sa)	(sa)->sa_len
#endif

#define	SALIGN	(sizeof(long) - 1)
#define	SA_RLEN(sa)	((sa)->sa_len ? (((sa)->sa_len + SALIGN) & ~SALIGN) : (SALIGN + 1))

#ifndef	ALIGNBYTES
/*
 * On systems with a routing socket, ALIGNBYTES should match the value
 * that the kernel uses when building the messages.
 */
#define	ALIGNBYTES	XXX
#endif
#ifndef	ALIGN
#define	ALIGN(p)	(((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES)
#endif

#define MAX_SYSCTL_TRY 5

int
getifaddrs(struct ifaddrs **pif)
{
	int icnt = 1;
	int dcnt = 0;
	int ncnt = 0;
	int ntry = 0;
	int mib[6];
	size_t needed;
	char *buf;
	char *next;
	struct ifaddrs *cif;
	char *p, *p0;
	struct rt_msghdr *rtm;
	struct if_msghdrl *ifm;
	struct ifa_msghdrl *ifam;
	struct sockaddr_dl *dl;
	struct sockaddr *sa;
	struct ifaddrs *ifa, *ift;
	struct if_data *if_data;
	u_short idx = 0;
	int i;
	size_t len, alen;
	char *data;
	char *names;

mib[0] = CTL_NET;
	mib[1] = PF_ROUTE;
	mib[2] = 0;             /* protocol */
	mib[3] = 0;             /* wildcard address family */
	mib[4] = NET_RT_IFLISTL;/* extra fields for extensible msghdr structs */
	mib[5] = 0;             /* no flags */
	do {
		/*
		 * We'll try to get addresses several times in case that
		 * the number of addresses is unexpectedly increased during
		 * the two sysctl calls.  This should rarely happen, but we'll
		 * try to do our best for applications that assume success of
		 * this library (which should usually be the case).
		 * Portability note: since FreeBSD does not add margin of
		 * memory at the first sysctl, the possibility of failure on
		 * the second sysctl call is a bit higher.
		 */

if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
			return (-1);
		if ((buf = malloc(needed)) == NULL)
			return (-1);
		if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
			if (errno != ENOMEM || ++ntry >= MAX_SYSCTL_TRY) {
				free(buf);
				return (-1);
			}
			free(buf);
			buf = NULL;
		} 
	} while (buf == NULL);

for (next = buf; next < buf + needed; next += rtm->rtm_msglen) {
		rtm = (struct rt_msghdr *)(void *)next;
		if (rtm->rtm_version != RTM_VERSION)
			continue;
		switch (rtm->rtm_type) {
		case RTM_IFINFO:
			ifm = (struct if_msghdrl *)(void *)rtm;
			if (ifm->ifm_addrs & RTA_IFP) {
				idx = ifm->ifm_index;
				++icnt;
				if_data = IF_MSGHDRL_IFM_DATA(ifm);
				dcnt += if_data->ifi_datalen;
				dl = (struct sockaddr_dl *)IF_MSGHDRL_RTA(ifm);
				dcnt += SA_RLEN((struct sockaddr *)(void*)dl) +
				    ALIGNBYTES;
				ncnt += dl->sdl_nlen + 1;
			} else
				idx = 0;
			break;

case RTM_NEWADDR:
			ifam = (struct ifa_msghdrl *)(void *)rtm;
			if (idx && ifam->ifam_index != idx)
				abort();	/* this cannot happen */

#define	RTA_MASKS	(RTA_NETMASK | RTA_IFA | RTA_BRD)
			if (idx == 0 || (ifam->ifam_addrs & RTA_MASKS) == 0)
				break;
			p = (char *)IFA_MSGHDRL_RTA(ifam);
			++icnt;
			if_data = IFA_MSGHDRL_IFAM_DATA(ifam);
			dcnt += if_data->ifi_datalen + ALIGNBYTES;

/* Scan to look for length of address */
			alen = 0;
			for (p0 = p, i = 0; i < RTAX_MAX; i++) {
				if ((RTA_MASKS & ifam->ifam_addrs & (1 << i))
				    == 0)
					continue;
				sa = (struct sockaddr *)(void *)p;
				len = SA_RLEN(sa);
				if (i == RTAX_IFA) {
					alen = len;
					break;
				}
				p += len;
			}
			for (p = p0, i = 0; i < RTAX_MAX; i++) {
				if ((RTA_MASKS & ifam->ifam_addrs & (1 << i))
				    == 0)
					continue;
				sa = (struct sockaddr *)(void *)p;
				len = SA_RLEN(sa);
				if (i == RTAX_NETMASK && SA_LEN(sa) == 0)
					dcnt += alen;
				else
					dcnt += len;
				p += len;
			}
			break;
		}
	}

if (icnt + dcnt + ncnt == 1) {
		*pif = NULL;
		free(buf);
		return (0);
	}
	data = malloc(sizeof(struct ifaddrs) * icnt + dcnt + ncnt);
	if (data == NULL) {
		free(buf);
		return(-1);
	}

ifa = (struct ifaddrs *)(void *)data;
	data += sizeof(struct ifaddrs) * icnt;
	names = data + dcnt;

memset(ifa, 0, sizeof(struct ifaddrs) * icnt);
	ift = ifa;

idx = 0;
	cif = NULL;
	for (next = buf; next < buf + needed; next += rtm->rtm_msglen) {
		rtm = (struct rt_msghdr *)(void *)next;
		if (rtm->rtm_version != RTM_VERSION)
			continue;
		switch (rtm->rtm_type) {
		case RTM_IFINFO:
			ifm = (struct if_msghdrl *)(void *)rtm;
			if ((ifm->ifm_addrs & RTA_IFP) == 0) {
				idx = 0;
				break;
			}

idx = ifm->ifm_index;
			dl = (struct sockaddr_dl *)IF_MSGHDRL_RTA(ifm);

cif = ift;
			ift->ifa_name = names;
			ift->ifa_flags = (int)ifm->ifm_flags;
			memcpy(names, dl->sdl_data, (size_t)dl->sdl_nlen);
			names[dl->sdl_nlen] = 0;
			names += dl->sdl_nlen + 1;

ift->ifa_addr = (struct sockaddr *)(void *)data;
			memcpy(data, dl, (size_t)SA_LEN((struct sockaddr *)
			    (void *)dl));
			data += SA_RLEN((struct sockaddr *)(void *)dl);

if_data = IF_MSGHDRL_IFM_DATA(ifm);
			/* ifm_data needs to be aligned */
			ift->ifa_data = data = (void *)ALIGN(data);
			memcpy(data, if_data, if_data->ifi_datalen);
			data += if_data->ifi_datalen;

ift = (ift->ifa_next = ift + 1);
			break;

case RTM_NEWADDR:
			ifam = (struct ifa_msghdrl *)(void *)rtm;
			if (idx && ifam->ifam_index != idx)
				abort();	/* this cannot happen */

if (idx == 0 || (ifam->ifam_addrs & RTA_MASKS) == 0)
				break;
			ift->ifa_name = cif->ifa_name;
			ift->ifa_flags = cif->ifa_flags;
			ift->ifa_data = NULL;

p = (char *)IFA_MSGHDRL_RTA(ifam);
			/* Scan to look for length of address */
			alen = 0;
			for (p0 = p, i = 0; i < RTAX_MAX; i++) {
				if ((RTA_MASKS & ifam->ifam_addrs & (1 << i))
				    == 0)
					continue;
				sa = (struct sockaddr *)(void *)p;
				len = SA_RLEN(sa);
				if (i == RTAX_IFA) {
					alen = len;
					break;
				}
				p += len;
			}
			for (p = p0, i = 0; i < RTAX_MAX; i++) {
				if ((RTA_MASKS & ifam->ifam_addrs & (1 << i))
				    == 0)
					continue;
				sa = (struct sockaddr *)(void *)p;
				len = SA_RLEN(sa);
				switch (i) {
				case RTAX_IFA:
					ift->ifa_addr =
					    (struct sockaddr *)(void *)data;
					memcpy(data, p, len);
					data += len;
					break;

case RTAX_NETMASK:
					ift->ifa_netmask =
					    (struct sockaddr *)(void *)data;
					if (SA_LEN(sa) == 0) {
						memset(data, 0, alen);
						data += alen;
						break;
					}
					memcpy(data, p, len);
					data += len;
					break;

case RTAX_BRD:
					ift->ifa_broadaddr =
					    (struct sockaddr *)(void *)data;
					memcpy(data, p, len);
					data += len;
					break;
				}
				p += len;
			}

if_data = IFA_MSGHDRL_IFAM_DATA(ifam);
			/* ifam_data needs to be aligned */
			ift->ifa_data = data = (void *)ALIGN(data);
			memcpy(data, if_data, if_data->ifi_datalen);
			data += if_data->ifi_datalen;

ift = (ift->ifa_next = ift + 1);
			break;
		}
	}

free(buf);

if (--ift >= ifa) {
		ift->ifa_next = NULL;
		*pif = ifa;
	} else {
		*pif = NULL;
		free(ifa);
	}
	return (0);
}

void
freeifaddrs(struct ifaddrs *ifp)
{

free(ifp);
}

003 File Manager

Editing: getifaddrs.c

Upload File

Create Folder