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
163 lines
4.3 KiB
C
163 lines
4.3 KiB
C
/* $NetBSD: bindresvport.c,v 1.25 2013/03/11 20:19:28 tron Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2010, Oracle America, Inc.
|
|
*
|
|
* 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 the "Oracle America, 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
#if 0
|
|
static char *sccsid = "@(#)bindresvport.c 1.8 88/02/08 SMI";
|
|
static char *sccsid = "@(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC";
|
|
#else
|
|
__RCSID("$NetBSD: bindresvport.c,v 1.25 2013/03/11 20:19:28 tron Exp $");
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* Copyright (c) 1987 by Sun Microsystems, Inc.
|
|
*/
|
|
|
|
#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 "svc_fdset.h"
|
|
|
|
#ifdef __weak_alias
|
|
__weak_alias(bindresvport,_bindresvport)
|
|
__weak_alias(bindresvport_sa,_bindresvport_sa)
|
|
#endif
|
|
|
|
/*
|
|
* Bind a socket to a privileged IP port
|
|
*/
|
|
int
|
|
bindresvport(int sd, struct sockaddr_in *brsin)
|
|
{
|
|
return bindresvport_sa(sd, (struct sockaddr *)(void *)brsin);
|
|
}
|
|
|
|
/*
|
|
* Bind a socket to a privileged IP port
|
|
*/
|
|
int
|
|
bindresvport_sa(int sd, struct sockaddr *sa)
|
|
{
|
|
int error, old;
|
|
struct sockaddr_storage myaddr;
|
|
struct sockaddr_in *brsin;
|
|
#ifdef INET6
|
|
struct sockaddr_in6 *brsin6;
|
|
#endif
|
|
int proto, portrange, portlow;
|
|
u_int16_t *portp;
|
|
socklen_t salen;
|
|
int af;
|
|
|
|
if (sa == NULL) {
|
|
salen = sizeof(myaddr);
|
|
sa = (struct sockaddr *)(void *)&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;
|
|
brsin = (struct sockaddr_in *)(void *)sa;
|
|
salen = sizeof(struct sockaddr_in);
|
|
portp = &brsin->sin_port;
|
|
break;
|
|
#ifdef INET6
|
|
case AF_INET6:
|
|
proto = IPPROTO_IPV6;
|
|
portrange = IPV6_PORTRANGE;
|
|
portlow = IPV6_PORTRANGE_LOW;
|
|
brsin6 = (struct sockaddr_in6 *)(void *)sa;
|
|
salen = sizeof(struct sockaddr_in6);
|
|
portp = &brsin6->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,
|
|
(socklen_t)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,
|
|
(socklen_t)sizeof(old)) < 0)
|
|
errno = saved_errno;
|
|
return (error);
|
|
}
|
|
|
|
if (sa != (struct sockaddr *)(void *)&myaddr) {
|
|
/* What did the kernel assign? */
|
|
if (getsockname(sd, sa, &salen) < 0)
|
|
errno = saved_errno;
|
|
return (error);
|
|
}
|
|
}
|
|
return (error);
|
|
}
|