1 /*********************************************************************
2 * RPC for the Windows NT Operating System
3 * 1993 by Martin F. Gergeleit
4 * Users may use, copy or modify Sun RPC for the Windows NT Operating
5 * System according to the Sun copyright below.
7 * RPC for the Windows NT Operating System COMES WITH ABSOLUTELY NO
8 * WARRANTY, NOR WILL I BE LIABLE FOR ANY DAMAGES INCURRED FROM THE
9 * USE OF. USE ENTIRELY AT YOUR OWN RISK!!!
10 *********************************************************************/
12 static char sccsid[] = "@(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC 1.8 88/02/08 SMI";
14 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
15 * unrestricted use provided that this legend is included on all tape
16 * media and as a part of the software program in whole or part. Users
17 * may copy or modify Sun RPC without charge, but are not authorized
18 * to license or distribute it to anyone else except as part of a product or
19 * program developed by the user.
21 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
22 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
25 * Sun RPC is provided with no support and without any obligation on the
26 * part of Sun Microsystems, Inc. to assist in its use, correction,
27 * modification or enhancement.
29 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
30 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
31 * OR ANY PART THEREOF.
33 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
34 * or profits or other special, indirect and consequential damages, even if
35 * Sun has been advised of the possibility of such damages.
37 * Sun Microsystems, Inc.
39 * Mountain View, California 94043
43 * Copyright (c) 1987 by Sun Microsystems, Inc.
48 #include <sys/types.h>
51 #include <sys/types.h>
52 #include <sys/errno.h>
53 #include <sys/socket.h>
54 #include <netinet/in.h>
58 * Bind a socket to a privileged IP port
62 struct sockaddr_in *sin;
66 struct sockaddr_in myaddr;
75 #define ENDPORT (IPPORT_RESERVED - 1)
76 #define NPORTS (ENDPORT - STARTPORT + 1)
78 if (sin == (struct sockaddr_in *)0) {
80 bzero((char*)sin, sizeof (*sin));
81 sin->sin_family = AF_INET;
82 } else if (sin->sin_family != AF_INET) {
84 my_errno = WSAEPFNOSUPPORT;
92 port = (getpid() % NPORTS) + STARTPORT;
96 my_errno = WSAEADDRINUSE;
97 for (i = 0; i < NPORTS && res < 0 && my_errno == WSAEADDRINUSE; i++) {
100 for (i = 0; i < NPORTS && res < 0 && errno == EADDRINUSE; i++) {
102 sin->sin_port = htons(port++);
103 if (port > ENDPORT) {
106 res = bind(sd, (struct sockaddr*)sin, sizeof(struct sockaddr_in));