84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
164 lines
4.3 KiB
C
164 lines
4.3 KiB
C
/* $NetBSD: bindresvport.c,v 1.25 2013/03/11 20:19:28 tron Exp $ */
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/*
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* Copyright (c) 2010, Oracle America, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, Inc." nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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 1.25 2013/03/11 20:19:28 tron 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 <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <rpc/rpc.h>
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#include "svc_fdset.h"
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#ifdef __weak_alias
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__weak_alias(bindresvport,_bindresvport)
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__weak_alias(bindresvport_sa,_bindresvport_sa)
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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(int sd, struct sockaddr_in *brsin)
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{
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return bindresvport_sa(sd, (struct sockaddr *)(void *)brsin);
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}
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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_sa(int sd, struct sockaddr *sa)
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{
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int error, old;
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struct sockaddr_storage myaddr;
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struct sockaddr_in *brsin;
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#ifdef INET6
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struct sockaddr_in6 *brsin6;
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#endif
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int proto, portrange, portlow;
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u_int16_t *portp;
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socklen_t salen;
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int af;
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if (sa == NULL) {
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salen = sizeof(myaddr);
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sa = (struct sockaddr *)(void *)&myaddr;
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if (getsockname(sd, sa, &salen) == -1)
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return -1; /* errno is correctly set */
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af = sa->sa_family;
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memset(sa, 0, salen);
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} else
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af = sa->sa_family;
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switch (af) {
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case AF_INET:
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proto = IPPROTO_IP;
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portrange = IP_PORTRANGE;
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portlow = IP_PORTRANGE_LOW;
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brsin = (struct sockaddr_in *)(void *)sa;
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salen = sizeof(struct sockaddr_in);
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portp = &brsin->sin_port;
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break;
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#ifdef INET6
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case AF_INET6:
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proto = IPPROTO_IPV6;
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portrange = IPV6_PORTRANGE;
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portlow = IPV6_PORTRANGE_LOW;
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brsin6 = (struct sockaddr_in6 *)(void *)sa;
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salen = sizeof(struct sockaddr_in6);
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portp = &brsin6->sin6_port;
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break;
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#endif
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default:
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errno = EPFNOSUPPORT;
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return (-1);
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}
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sa->sa_family = af;
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sa->sa_len = salen;
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if (*portp == 0) {
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socklen_t oldlen = sizeof(old);
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error = getsockopt(sd, proto, portrange, &old, &oldlen);
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if (error < 0)
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return (error);
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error = setsockopt(sd, proto, portrange, &portlow,
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(socklen_t)sizeof(portlow));
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if (error < 0)
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return (error);
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}
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error = bind(sd, sa, salen);
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if (*portp == 0) {
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int saved_errno = errno;
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if (error < 0) {
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if (setsockopt(sd, proto, portrange, &old,
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(socklen_t)sizeof(old)) < 0)
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errno = saved_errno;
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return (error);
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}
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if (sa != (struct sockaddr *)(void *)&myaddr) {
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/* What did the kernel assign? */
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if (getsockname(sd, sa, &salen) < 0)
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errno = saved_errno;
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return (error);
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}
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}
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return (error);
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}
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