43fa6fe319
identifier namespace by renaming non standard functions and variables such that they have a leading underscore. The library will use those names internally. Weak aliases are used to provide the original names to the API. This is only the first part of this change. It is most of the functions which are implemented in C for all NetBSD ports. Subsequent changes are to add the same support to the remaining C files, to assembly files, and to the automagically generated assembly source used for system calls. When all of the above is done, ports with weak alias support should add a definition for __weak_alias to <sys/cdefs.h>.
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* $NetBSD: bindresvport.c,v 1.8 1997/07/21 14:08:21 jtc Exp $ */
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/*
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* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
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* unrestricted use provided that this legend is included on all tape
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* media and as a part of the software program in whole or part. Users
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* may copy or modify Sun RPC without charge, but are not authorized
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* to license or distribute it to anyone else except as part of a product or
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* program developed by the user.
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*
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* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
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* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
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*
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* Sun RPC is provided with no support and without any obligation on the
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* part of Sun Microsystems, Inc. to assist in its use, correction,
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* modification or enhancement.
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*
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* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
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* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
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* OR ANY PART THEREOF.
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*
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* In no event will Sun Microsystems, Inc. be liable for any lost revenue
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* or profits or other special, indirect and consequential damages, even if
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* Sun has been advised of the possibility of such damages.
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*
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* Sun Microsystems, Inc.
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* 2550 Garcia Avenue
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* Mountain View, California 94043
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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#if 0
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static char *sccsid = "@(#)bindresvport.c 1.8 88/02/08 SMI";
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static char *sccsid = "@(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC";
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#else
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__RCSID("$NetBSD: bindresvport.c,v 1.8 1997/07/21 14:08:21 jtc Exp $");
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#endif
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#endif
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/*
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* Copyright (c) 1987 by Sun Microsystems, Inc.
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*/
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#include "namespace.h"
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/errno.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <rpc/rpc.h>
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#ifdef __weak_alias
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__weak_alias(bindresvport,_bindresvport);
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#endif
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/*
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* Bind a socket to a privileged IP port
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*/
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int
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bindresvport(sd, sin)
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int sd;
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struct sockaddr_in *sin;
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{
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int res;
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static short port;
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struct sockaddr_in myaddr;
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int i;
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#define STARTPORT 600
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#define ENDPORT (IPPORT_RESERVED - 1)
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#define NPORTS (ENDPORT - STARTPORT + 1)
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if (sin == (struct sockaddr_in *)0) {
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sin = &myaddr;
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memset(sin, 0, sizeof (*sin));
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sin->sin_len = sizeof(struct sockaddr_in);
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sin->sin_family = AF_INET;
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} else if (sin->sin_family != AF_INET) {
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errno = EPFNOSUPPORT;
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return (-1);
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}
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if (port == 0) {
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port = (getpid() % NPORTS) + STARTPORT;
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}
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res = -1;
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errno = EADDRINUSE;
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for (i = 0; i < NPORTS && res < 0 && errno == EADDRINUSE; i++) {
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sin->sin_port = htons(port++);
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if (port > ENDPORT) {
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port = STARTPORT;
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}
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res = bind(sd,
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(struct sockaddr *)sin, sizeof(struct sockaddr_in));
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}
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return (res);
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}
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