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
30 * Copyright (c) 1987 by Sun Microsystems, Inc.
39 #include <sys/types.h>
40 #include <sys/socket.h>
41 #include <netinet/in.h>
46 * Bind a socket to a privileged IP port
49 bindresvport (int sd
, struct sockaddr_in
*sin
)
53 struct sockaddr_in myaddr
;
57 #define ENDPORT (IPPORT_RESERVED - 1)
58 #define NPORTS (ENDPORT - STARTPORT + 1)
60 if (sin
== (struct sockaddr_in
*) 0)
63 memset (sin
, 0, sizeof (*sin
));
64 sin
->sin_family
= AF_INET
;
66 else if (sin
->sin_family
!= AF_INET
)
68 __set_errno (EPFNOSUPPORT
);
74 port
= (getpid () % NPORTS
) + STARTPORT
;
77 __set_errno (EADDRINUSE
);
79 for (i
= 0; i
< NPORTS
&& res
< 0 && errno
== EADDRINUSE
; ++i
)
81 sin
->sin_port
= htons (port
);
86 res
= bind(sd
, (struct sockaddr
*)sin
, sizeof(struct sockaddr_in
));
91 libc_hidden_def(bindresvport
)