diff options
Diffstat (limited to 'freebsd/lib/libc/rpc/bindresvport.c')
| -rw-r--r-- | freebsd/lib/libc/rpc/bindresvport.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/freebsd/lib/libc/rpc/bindresvport.c b/freebsd/lib/libc/rpc/bindresvport.c new file mode 100644 index 00000000..baf5cbd4 --- /dev/null +++ b/freebsd/lib/libc/rpc/bindresvport.c @@ -0,0 +1,162 @@ +#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(sd, sin) + int sd; + struct sockaddr_in *sin; +{ + return bindresvport_sa(sd, (struct sockaddr *)sin); +} + +/* + * Bind a socket to a privileged IP port + */ +int +bindresvport_sa(sd, 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); +} |