2 static char sfs_bindresvport_id[] = "@(#)bindresvport.c 2.1 97/10/23";
4 /* 2.2 88/07/29 4.0 RPCSRC 1.8 88/02/08 SMI */
6 * Copyright (c) 1992-1997,2001 by Standard Performance Evaluation Corporation
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62 #include <sys/types.h>
63 #include "rpc/osdep.h"
66 * Bind a socket to a privileged IP port
71 struct sockaddr_in *sin)
75 struct sockaddr_in myaddr;
79 #define ENDPORT (IPPORT_RESERVED - 1)
80 #define NPORTS (ENDPORT - STARTPORT + 1)
82 if (sin == (struct sockaddr_in *)0) {
84 memset(sin, '\0', sizeof (struct sockaddr_in));
85 sin->sin_family = AF_INET;
86 } else if (sin->sin_family != AF_INET) {
91 port = (getpid() % NPORTS) + STARTPORT;
95 for (i = 0; i < NPORTS && res < 0 && errno == EADDRINUSE; i++) {
96 sin->sin_port = htons(port++);
100 res = bind(sd, (struct sockaddr *)sin, sizeof(struct sockaddr_in));