2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part. Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
29 * @(#)bindresvport.c 1.8 88/02/08 SMI
30 * @(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC
31 * $FreeBSD: src/lib/libc/rpc/bindresvport.c,v 1.12 2000/01/26 09:02:42 shin Exp $
32 * $DragonFly: src/lib/libc/rpc/bindresvport.c,v 1.4 2005/11/13 12:27:04 swildner Exp $
36 * Copyright (c) 1987 by Sun Microsystems, Inc.
38 * Portions Copyright(C) 1996, Jason Downs. All rights reserved.
41 #include "namespace.h"
42 #include <sys/types.h>
43 #include <sys/errno.h>
44 #include <sys/socket.h>
45 #include <netinet/in.h>
48 #include "un-namespace.h"
51 * Bind a socket to a privileged IP port
54 bindresvport(int sd
, struct sockaddr_in
*sin
)
56 return bindresvport_sa(sd
, (struct sockaddr
*)sin
);
60 * Bind a socket to a privileged port for whatever protocol.
63 bindresvport_sa(int sd
, struct sockaddr
*sa
)
66 struct sockaddr_storage myaddr
;
67 struct sockaddr_in
*sin
;
68 struct sockaddr_in6
*sin6
;
69 int proto
, portrange
, portlow
;
74 salen
= sizeof(myaddr
);
75 sa
= (struct sockaddr
*)&myaddr
;
77 if (_getsockname(sd
, sa
, &salen
) == -1)
78 return -1; /* errno is correctly set */
81 memset(&myaddr
, 0, salen
);
87 portrange
= IP_PORTRANGE
;
88 portlow
= IP_PORTRANGE_LOW
;
89 sin
= (struct sockaddr_in
*)sa
;
90 salen
= sizeof(struct sockaddr_in
);
92 } else if (af
== AF_INET6
) {
94 portrange
= IPV6_PORTRANGE
;
95 portlow
= IPV6_PORTRANGE_LOW
;
96 sin6
= (struct sockaddr_in6
*)sa
;
97 salen
= sizeof(struct sockaddr_in6
);
98 port
= sin6
->sin6_port
;
100 errno
= EPFNOSUPPORT
;
107 int oldlen
= sizeof(old
);
109 error
= _getsockopt(sd
, proto
, portrange
, &old
, &oldlen
);
113 error
= setsockopt(sd
, proto
, portrange
, &portlow
,
119 error
= _bind(sd
, sa
, salen
);
122 int saved_errno
= errno
;
125 if (_setsockopt(sd
, proto
, portrange
, &old
,
131 if (sa
!= (struct sockaddr
*)&myaddr
) {
132 /* Hmm, what did the kernel assign... */
133 if (_getsockname(sd
, sa
, &salen
) < 0)