add getifaddrs(3) from bsdi. this is a magic function which lets you grab
interface addresses in a portable manner, without headache of SIOCGIFCONF or sysctl. it is in bsdi/openbsd/netbsd already. from kame tree (actually, mandatory for latest kame tree).
This commit is contained in:
Jun-ichiro itojun Hagino
parent
3b8a8567a1
commit
23ba01423e
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=62606
@ -10,7 +10,7 @@ CLEANFILES= osreldate.h version vers.c
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SUBDIR= rpcsvc
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FILES= a.out.h ar.h assert.h bitstring.h ctype.h db.h dirent.h disktab.h \
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dlfcn.h elf.h err.h fnmatch.h fstab.h \
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fts.h glob.h grp.h strhash.h histedit.h ieeefp.h iso646.h \
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fts.h glob.h grp.h strhash.h histedit.h ieeefp.h ifaddrs.h iso646.h \
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limits.h link.h locale.h malloc.h memory.h mpool.h \
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ndbm.h netdb.h nl_types.h nlist.h objformat.h \
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paths.h pthread.h pthread_np.h pwd.h \
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56
include/ifaddrs.h
Normal file
56
include/ifaddrs.h
Normal file
@ -0,0 +1,56 @@
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/* $FreeBSD$ */
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/*
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* Copyright (c) 1995, 1999
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* Berkeley Software Design, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* BSDI ifaddrs.h,v 2.5 2000/02/23 14:51:59 dab Exp
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*/
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#ifndef _IFADDRS_H_
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#define _IFADDRS_H_
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struct ifaddrs {
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struct ifaddrs *ifa_next;
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char *ifa_name;
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u_int ifa_flags;
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struct sockaddr *ifa_addr;
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struct sockaddr *ifa_netmask;
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struct sockaddr *ifa_dstaddr;
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void *ifa_data;
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};
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/*
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* This may have been defined in <net/if.h>. Note that if <net/if.h> is
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* to be included it must be included before this header file.
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*/
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#ifndef ifa_broadaddr
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#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */
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#endif
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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extern int getifaddrs __P((struct ifaddrs **));
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extern void freeifaddrs __P((struct ifaddrs *));
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__END_DECLS
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#endif
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@ -6,7 +6,7 @@
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SRCS+= addr2ascii.c ascii2addr.c base64.c ether_addr.c getaddrinfo.c \
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gethostbydns.c gethostbyht.c gethostbynis.c gethostnamadr.c \
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getnameinfo.c \
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getifaddrs.c getnameinfo.c \
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getnetbydns.c getnetbyht.c getnetbynis.c getnetnamadr.c \
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getproto.c getprotoent.c getprotoname.c getservbyname.c \
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getservbyport.c getservent.c herror.c inet_addr.c ifname.c \
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@ -28,7 +28,7 @@ CFLAGS+=-DINET6
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.if ${LIB} == "c"
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MAN3+= addr2ascii.3 byteorder.3 ethers.3 getaddrinfo.3 gethostbyname.3 \
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getipnodebyname.3 \
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getifaddrs.3 getipnodebyname.3 \
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getnameinfo.3 getnetent.3 getprotoent.3 getservent.3 if_indextoname.3 \
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inet.3 inet6_option_space.3 inet6_rthdr_space.3 linkaddr.3 \
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rcmd.3 resolver.3
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@ -44,6 +44,7 @@ MLINKS+=gethostbyname.3 endhostent.3 gethostbyname.3 gethostbyaddr.3 \
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gethostbyname.3 gethostbyname2.3 gethostbyname.3 gethostent.3 \
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gethostbyname.3 herror.3 gethostbyname.3 hstrerror.3 \
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gethostbyname.3 sethostent.3
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MLINKS+=getifaddrs.3 freeifaddrs.3
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MLINKS+=getipnodebyname.3 getipnodebyaddr.3 getipnodebyname.3 freehostent.3
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MLINKS+=getnetent.3 endnetent.3 getnetent.3 getnetbyaddr.3 \
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getnetent.3 getnetbyname.3 getnetent.3 setnetent.3
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163
lib/libc/net/getifaddrs.3
Normal file
163
lib/libc/net/getifaddrs.3
Normal file
@ -0,0 +1,163 @@
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.\" $FreeBSD$
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.\" $KAME: getifaddrs.3,v 1.4 2000/05/17 14:13:14 itojun Exp $
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.\" BSDI getifaddrs.3,v 2.5 2000/02/23 14:51:59 dab Exp
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.\"
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.\" Copyright (c) 1995, 1999
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.\" Berkeley Software Design, Inc. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.Dd "October 12, 1995"
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.Dt GETIFADDRS 3
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.Sh NAME
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.Nm getifaddrs
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.Nd get interface addresses
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.Sh SYNOPSIS
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.Fd #include <sys/types.h>
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.Fd #include <sys/socket.h>
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.Fd #include <ifaddrs.h>
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.Ft int
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.Fn getifaddrs "struct ifaddrs **ifap"
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.Ft void
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.Fn freeifaddrs "struct ifaddrs *ifp"
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.Sh DESCRIPTION
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The
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.Fn getifaddrs
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function stores a reference to a linked list of the network interfaces
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on the local machine in the memory referenced by
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.Fa ifap .
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The list consists of
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.Nm ifaddrs
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structures, as defined in the include file
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.Aq Pa ifaddrs.h .
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The
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.Nm ifaddrs
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structure contains at least the following entries:
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.Bd -literal
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struct ifaddrs *ifa_next; /* Pointer to next struct */
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char *ifa_name; /* Interface name */
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u_int ifa_flags; /* Interface flags */
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struct sockaddr *ifa_addr; /* Interface address */
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struct sockaddr *ifa_netmask; /* Interface netmask */
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struct sockaddr *ifa_broadaddr; /* Interface broadcast address */
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struct sockaddr *ifa_dstaddr; /* P2P interface destination */
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void *ifa_data; /* Address specific data */
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.Ed
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.Pp
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The
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.Li ifa_next
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field contains a pointer to the next structure on the list.
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This field is
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.Dv NULL
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in last structure on the list.
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.Pp
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The
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.Li ifa_name
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field contains the interface name.
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.Pp
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The
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.Li ifa_flags
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field contains the interface flags, as set by
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.Xr ifconfig 8
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utility.
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.Pp
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The
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.Li ifa_addr
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field references either the address of the interface or the link level
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address of the interface, if one exists, otherwise it is NULL.
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(The
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.Li sa_family
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field of the
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.Li ifa_addr
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field should be consulted to determine the format of the
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.Li ifa_addr
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address.)
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.Pp
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The
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.Li ifa_netmask
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field references the netmask associated with
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.Li ifa_addr ,
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if one is set, otherwise it is NULL.
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.Pp
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The
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.Li ifa_broadaddr
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field,
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which should only be referenced for non-P2P interfaces,
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references the broadcast address associated with
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.Li ifa_addr ,
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if one exists, otherwise it is NULL.
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.Pp
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The
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.Li ifa_dstaddr
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field references the destination address on a P2P interface,
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if one exists, otherwise it is NULL.
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.Pp
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The
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.Li ifa_data
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field references address family specific data. For
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.Dv AF_LINK
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addresses it contains a pointer to the
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.Fa struct if_data
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.Pq as defined in include file Aq Pa net/if.h
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which contains various interface attributes and statistics.
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For all other address families, it contains a pointer to the
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.Fa struct ifa_data
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.Pq as defined in include file Aq Pa net/if.h
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which contains per-address interface statistics.
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.Pp
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The data returned by
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.Fn getifaddrs
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is dynamically allocated and should be freed using
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.Fn freeifaddrs
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when no longer needed.
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.Sh RETURN VALUES
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Upon successful completion, a value of 0 is returned.
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Otherwise, a value of -1 is returned and
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.Va errno
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is set to indicate the error.
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.Sh ERRORS
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The
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.Fn getifaddrs
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may fail and set
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.Va errno
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for any of the errors specified for the library routines
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.Xr ioctl 2 ,
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.Xr socket 2 ,
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.Xr malloc 3
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or
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.Xr sysctl 3 .
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.Sh BUGS
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If both
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.Aq Pa net/if.h
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and
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.Aq Pa ifaddrs.h
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are being included,
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.Aq Pa net/if.h
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.Em must
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be included before
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.Aq Pa ifaddrs.h .
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.Sh SEE ALSO
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.Xr ioctl 2 ,
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.Xr socket 2 ,
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.Xr sysctl 3 ,
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.Xr networking 4 ,
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.Xr ifconfig 8
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.Sh HISTORY
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The
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.Nm
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implementation first appeared in BSDI BSD/OS.
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379
lib/libc/net/getifaddrs.c
Normal file
379
lib/libc/net/getifaddrs.c
Normal file
@ -0,0 +1,379 @@
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/* $FreeBSD$ */
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/*
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* Copyright (c) 1995, 1999
|
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* 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.
|
||||
*
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||||
* BSDI getifaddrs.c,v 2.12 2000/02/23 14:51:59 dab Exp
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*/
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/*
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* NOTE: SIOCGIFCONF case is not LP64 friendly. it also does not perform
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* try-and-error for region size.
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#ifdef NET_RT_IFLIST
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#include <sys/param.h>
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#include <net/route.h>
|
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#include <sys/sysctl.h>
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#include <net/if_dl.h>
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#endif
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#include <errno.h>
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#include <ifaddrs.h>
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#include <stdlib.h>
|
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#include <string.h>
|
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|
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#if !defined(AF_LINK)
|
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#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
|
||||
|
||||
#if _BSDI_VERSION >= 199701
|
||||
#define HAVE_IFM_DATA
|
||||
#endif
|
||||
|
||||
#if _BSDI_VERSION >= 199802
|
||||
#define HAVE_IFAM_DATA
|
||||
#endif
|
||||
|
||||
int
|
||||
getifaddrs(struct ifaddrs **pif)
|
||||
{
|
||||
int icnt = 1;
|
||||
int dcnt = 0;
|
||||
int ncnt = 0;
|
||||
#ifdef NET_RT_IFLIST
|
||||
int mib[6];
|
||||
size_t needed;
|
||||
char *buf;
|
||||
char *next;
|
||||
struct ifaddrs *cif = 0;
|
||||
char *p, *p0;
|
||||
struct rt_msghdr *rtm;
|
||||
struct if_msghdr *ifm;
|
||||
struct ifa_msghdr *ifam;
|
||||
struct sockaddr_dl *dl;
|
||||
struct sockaddr *sa;
|
||||
struct ifaddrs *ifa, *ift;
|
||||
u_short index = 0;
|
||||
#else /* NET_RT_IFLIST */
|
||||
char buf[1024];
|
||||
int m, sock;
|
||||
struct ifconf ifc;
|
||||
struct ifreq *ifr;
|
||||
struct ifreq *lifr;
|
||||
#endif /* NET_RT_IFLIST */
|
||||
int i;
|
||||
size_t len, alen;
|
||||
char *data;
|
||||
char *names;
|
||||
|
||||
#ifdef NET_RT_IFLIST
|
||||
mib[0] = CTL_NET;
|
||||
mib[1] = PF_ROUTE;
|
||||
mib[2] = 0; /* protocol */
|
||||
mib[3] = 0; /* wildcard address family */
|
||||
mib[4] = NET_RT_IFLIST;
|
||||
mib[5] = 0; /* no flags */
|
||||
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) {
|
||||
free(buf);
|
||||
return (-1);
|
||||
}
|
||||
|
||||
for (next = buf; next < buf + needed; next += rtm->rtm_msglen) {
|
||||
rtm = (struct rt_msghdr *)next;
|
||||
if (rtm->rtm_version != RTM_VERSION)
|
||||
continue;
|
||||
switch (rtm->rtm_type) {
|
||||
case RTM_IFINFO:
|
||||
ifm = (struct if_msghdr *)rtm;
|
||||
if (ifm->ifm_addrs & RTA_IFP) {
|
||||
index = ifm->ifm_index;
|
||||
++icnt;
|
||||
dl = (struct sockaddr_dl *)(ifm + 1);
|
||||
dcnt += SA_RLEN((struct sockaddr *)dl) +
|
||||
ALIGNBYTES;
|
||||
#ifdef HAVE_IFM_DATA
|
||||
dcnt += sizeof(ifm->ifm_data);
|
||||
#endif /* HAVE_IFM_DATA */
|
||||
ncnt += dl->sdl_nlen + 1;
|
||||
} else
|
||||
index = 0;
|
||||
break;
|
||||
|
||||
case RTM_NEWADDR:
|
||||
ifam = (struct ifa_msghdr *)rtm;
|
||||
if (index && ifam->ifam_index != index)
|
||||
abort(); /* this cannot happen */
|
||||
|
||||
#define RTA_MASKS (RTA_NETMASK | RTA_IFA | RTA_BRD)
|
||||
if (index == 0 || (ifam->ifam_addrs & RTA_MASKS) == 0)
|
||||
break;
|
||||
p = (char *)(ifam + 1);
|
||||
++icnt;
|
||||
#ifdef HAVE_IFAM_DATA
|
||||
dcnt += sizeof(ifam->ifam_data) + ALIGNBYTES;
|
||||
#endif /* HAVE_IFAM_DATA */
|
||||
/* 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 *)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 *)p;
|
||||
len = SA_RLEN(sa);
|
||||
if (i == RTAX_NETMASK && SA_LEN(sa) == 0)
|
||||
dcnt += alen;
|
||||
else
|
||||
dcnt += len;
|
||||
p += len;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
#else /* NET_RT_IFLIST */
|
||||
ifc.ifc_buf = buf;
|
||||
ifc.ifc_len = sizeof(buf);
|
||||
|
||||
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
|
||||
return (-1);
|
||||
i = ioctl(sock, SIOCGIFCONF, (char *)&ifc);
|
||||
close(sock);
|
||||
if (i < 0)
|
||||
return (-1);
|
||||
|
||||
ifr = ifc.ifc_req;
|
||||
lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len];
|
||||
|
||||
while (ifr < lifr) {
|
||||
struct sockaddr *sa;
|
||||
|
||||
sa = &ifr->ifr_addr;
|
||||
++icnt;
|
||||
dcnt += SA_RLEN(sa);
|
||||
ncnt += sizeof(ifr->ifr_name) + 1;
|
||||
|
||||
ifr = (struct ifreq *)(((char *)sa) + SA_LEN(sa));
|
||||
}
|
||||
#endif /* NET_RT_IFLIST */
|
||||
|
||||
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 *)data;
|
||||
data += sizeof(struct ifaddrs) * icnt;
|
||||
names = data + dcnt;
|
||||
|
||||
memset(ifa, 0, sizeof(struct ifaddrs) * icnt);
|
||||
ift = ifa;
|
||||
|
||||
#ifdef NET_RT_IFLIST
|
||||
index = 0;
|
||||
for (next = buf; next < buf + needed; next += rtm->rtm_msglen) {
|
||||
rtm = (struct rt_msghdr *)next;
|
||||
if (rtm->rtm_version != RTM_VERSION)
|
||||
continue;
|
||||
switch (rtm->rtm_type) {
|
||||
case RTM_IFINFO:
|
||||
ifm = (struct if_msghdr *)rtm;
|
||||
if (ifm->ifm_addrs & RTA_IFP) {
|
||||
index = ifm->ifm_index;
|
||||
dl = (struct sockaddr_dl *)(ifm + 1);
|
||||
|
||||
cif = ift;
|
||||
ift->ifa_name = names;
|
||||
ift->ifa_flags = (int)ifm->ifm_flags;
|
||||
memcpy(names, dl->sdl_data, dl->sdl_nlen);
|
||||
names[dl->sdl_nlen] = 0;
|
||||
names += dl->sdl_nlen + 1;
|
||||
|
||||
ift->ifa_addr = (struct sockaddr *)data;
|
||||
memcpy(data, dl, SA_LEN((struct sockaddr *)dl));
|
||||
data += SA_RLEN((struct sockaddr *)dl);
|
||||
|
||||
#ifdef HAVE_IFM_DATA
|
||||
/* ifm_data needs to be aligned */
|
||||
ift->ifa_data = data = (void *)ALIGN(data);
|
||||
memcpy(data, &ifm->ifm_data, sizeof(ifm->ifm_data));
|
||||
data += sizeof(ifm->ifm_data);
|
||||
#else /* HAVE_IFM_DATA */
|
||||
ift->ifa_data = NULL;
|
||||
#endif /* HAVE_IFM_DATA */
|
||||
|
||||
ift = (ift->ifa_next = ift + 1);
|
||||
} else
|
||||
index = 0;
|
||||
break;
|
||||
|
||||
case RTM_NEWADDR:
|
||||
ifam = (struct ifa_msghdr *)rtm;
|
||||
if (index && ifam->ifam_index != index)
|
||||
abort(); /* this cannot happen */
|
||||
|
||||
if (index == 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 *)(ifam + 1);
|
||||
/* 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 *)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 *)p;
|
||||
len = SA_RLEN(sa);
|
||||
switch (i) {
|
||||
case RTAX_IFA:
|
||||
ift->ifa_addr = (struct sockaddr *)data;
|
||||
memcpy(data, p, len);
|
||||
data += len;
|
||||
break;
|
||||
|
||||
case RTAX_NETMASK:
|
||||
ift->ifa_netmask =
|
||||
(struct sockaddr *)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 *)data;
|
||||
memcpy(data, p, len);
|
||||
data += len;
|
||||
break;
|
||||
}
|
||||
p += len;
|
||||
}
|
||||
|
||||
#ifdef HAVE_IFAM_DATA
|
||||
/* ifam_data needs to be aligned */
|
||||
ift->ifa_data = data = (void *)ALIGN(data);
|
||||
memcpy(data, &ifam->ifam_data, sizeof(ifam->ifam_data));
|
||||
data += sizeof(ifam->ifam_data);
|
||||
#endif /* HAVE_IFAM_DATA */
|
||||
|
||||
ift = (ift->ifa_next = ift + 1);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
free(buf);
|
||||
#else /* NET_RT_IFLIST */
|
||||
ifr = ifc.ifc_req;
|
||||
lifr = (struct ifreq *)&ifc.ifc_buf[ifc.ifc_len];
|
||||
|
||||
while (ifr < lifr) {
|
||||
struct sockaddr *sa;
|
||||
|
||||
ift->ifa_name = names;
|
||||
names[sizeof(ifr->ifr_name)] = 0;
|
||||
strncpy(names, ifr->ifr_name, sizeof(ifr->ifr_name));
|
||||
while (*names++)
|
||||
;
|
||||
|
||||
ift->ifa_addr = (struct sockaddr *)data;
|
||||
sa = &ifr->ifr_addr;
|
||||
memcpy(data, sa, SA_LEN(sa));
|
||||
data += SA_RLEN(sa);
|
||||
|
||||
ifr = (struct ifreq *)(((char *)sa) + SA_LEN(sa));
|
||||
ift = (ift->ifa_next = ift + 1);
|
||||
}
|
||||
#endif /* NET_RT_IFLIST */
|
||||
if (--ift >= ifa) {
|
||||
ift->ifa_next = NULL;
|
||||
*pif = ifa;
|
||||
} else {
|
||||
*pif = NULL;
|
||||
free(ifa);
|
||||
}
|
||||
return (0);
|
||||
}
|
||||
|
||||
void
|
||||
freeifaddrs(struct ifaddrs *ifp)
|
||||
{
|
||||
free(ifp);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user