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#include <machine/rtems-bsd-user-space.h>
/* $NetBSD: bindresvport.c,v 1.19 2000/07/06 03:03:59 christos Exp $ */
/*-
* Copyright (c) 2009, Sun Microsystems, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Sun Microsystems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char *sccsid2 = "from: @(#)bindresvport.c 1.8 88/02/08 SMI";
static char *sccsid = "from: @(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC";
#endif
/* from: $OpenBSD: bindresvport.c,v 1.7 1996/07/30 16:25:47 downsj Exp $ */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Copyright (c) 1987 by Sun Microsystems, Inc.
*
* Portions Copyright(C) 1996, Jason Downs. All rights reserved.
*/
#include "namespace.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <rpc/rpc.h>
#include <string.h>
#include "un-namespace.h"
/*
* Bind a socket to a privileged IP port
*/
int
bindresvport(int sd, struct sockaddr_in *sin)
{
return bindresvport_sa(sd, (struct sockaddr *)sin);
}
/*
* Bind a socket to a privileged IP port
*/
int
bindresvport_sa(int sd, struct sockaddr *sa)
{
int old, error, af;
struct sockaddr_storage myaddr;
struct sockaddr_in *sin;
#ifdef INET6
struct sockaddr_in6 *sin6;
#endif
int proto, portrange, portlow;
u_int16_t *portp;
socklen_t salen;
if (sa == NULL) {
salen = sizeof(myaddr);
sa = (struct sockaddr *)&myaddr;
if (_getsockname(sd, sa, &salen) == -1)
return -1; /* errno is correctly set */
af = sa->sa_family;
memset(sa, 0, salen);
} else
af = sa->sa_family;
switch (af) {
case AF_INET:
proto = IPPROTO_IP;
portrange = IP_PORTRANGE;
portlow = IP_PORTRANGE_LOW;
sin = (struct sockaddr_in *)sa;
salen = sizeof(struct sockaddr_in);
portp = &sin->sin_port;
break;
#ifdef INET6
case AF_INET6:
proto = IPPROTO_IPV6;
portrange = IPV6_PORTRANGE;
portlow = IPV6_PORTRANGE_LOW;
sin6 = (struct sockaddr_in6 *)sa;
salen = sizeof(struct sockaddr_in6);
portp = &sin6->sin6_port;
break;
#endif
default:
errno = EPFNOSUPPORT;
return (-1);
}
sa->sa_family = af;
sa->sa_len = salen;
if (*portp == 0) {
socklen_t oldlen = sizeof(old);
error = _getsockopt(sd, proto, portrange, &old, &oldlen);
if (error < 0)
return (error);
error = _setsockopt(sd, proto, portrange, &portlow,
sizeof(portlow));
if (error < 0)
return (error);
}
error = _bind(sd, sa, salen);
if (*portp == 0) {
int saved_errno = errno;
if (error < 0) {
if (_setsockopt(sd, proto, portrange, &old,
sizeof(old)) < 0)
errno = saved_errno;
return (error);
}
if (sa != (struct sockaddr *)&myaddr) {
/* Hmm, what did the kernel assign? */
if (_getsockname(sd, sa, &salen) < 0)
errno = saved_errno;
return (error);
}
}
return (error);
}
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