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51 * @(#)gethostnamadr.c 8.1 (Berkeley) 6/4/93
52 * $FreeBSD: src/lib/libc/net/map_v4v6.c,v 1.5.2.1 2001/03/05 10:47:08 obrien Exp $
53 * $DragonFly: src/lib/libc/net/map_v4v6.c,v 1.4 2005/11/13 02:04:47 swildner Exp $
56 #include <sys/types.h>
57 #include <sys/param.h>
58 #include <sys/socket.h>
59 #include <netinet/in.h>
60 #include <arpa/inet.h>
61 #include <arpa/nameser.h>
76 _map_v4v6_address(const char *src
, char *dst
)
78 u_char
*p
= (u_char
*)dst
;
82 /* Stash a temporary copy so our caller can update in place. */
83 bcopy(src
, tmp
, INADDRSZ
);
84 /* Mark this ipv6 addr as a mapped ipv4. */
85 for (i
= 0; i
< 10; i
++)
89 /* Retrieve the saved copy and we're done. */
90 bcopy(tmp
, (void*)p
, INADDRSZ
);
94 _map_v4v6_hostent(struct hostent
*hp
, char **bpp
, int *lenp
)
98 if (hp
->h_addrtype
!= AF_INET
|| hp
->h_length
!= INADDRSZ
)
100 hp
->h_addrtype
= AF_INET6
;
101 hp
->h_length
= IN6ADDRSZ
;
102 for (ap
= hp
->h_addr_list
; *ap
; ap
++) {
103 int i
= sizeof(align
) - ((u_long
)*bpp
% sizeof(align
));
105 if (*lenp
< (i
+ IN6ADDRSZ
)) {
106 /* Out of memory. Truncate address list here. XXX */
112 _map_v4v6_address(*ap
, *bpp
);