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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [librpc/] [src/] [rpc/] [bindresvport.c] - Rev 30
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/* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part. Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */ #if defined(LIBC_SCCS) && !defined(lint) /*static char *sccsid = "from: @(#)bindresvport.c 1.8 88/02/08 SMI";*/ /*static char *sccsid = "from: @(#)bindresvport.c 2.2 88/07/29 4.0 RPCSRC";*/ /*from: OpenBSD: bindresvport.c,v 1.7 1996/07/30 16:25:47 downsj Exp */ static char *rcsid = "$FreeBSD: src/lib/libc/rpc/bindresvport.c,v 1.12 2000/01/26 09:02:42 shin Exp $"; #endif /* * Copyright (c) 1987 by Sun Microsystems, Inc. * * Portions Copyright(C) 1996, Jason Downs. All rights reserved. */ #include <sys/types.h> #include <sys/errno.h> #include <sys/socket.h> #include <netinet/in.h> #include <unistd.h> #include <string.h> /* * Bind a socket to a privileged port for whatever protocol. */ int bindresvport_sa(sd, sa) int sd; struct sockaddr *sa; { int old, error, af; struct sockaddr myaddr; struct sockaddr_in *sin; #if (defined(AF_INET6) && defined(IPPROTO_IPV6)) struct sockaddr_in6 *sin6; #endif int proto, portrange, portlow; u_int16_t port; int 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(&myaddr, 0, salen); } else af = sa->sa_family; if (af == AF_INET) { proto = IPPROTO_IP; portrange = IP_PORTRANGE; portlow = IP_PORTRANGE_LOW; sin = (struct sockaddr_in *)sa; salen = sizeof(struct sockaddr_in); port = sin->sin_port; #if (defined(AF_INET6) && defined(IPPROTO_IPV6)) } else if (af == AF_INET6) { proto = IPPROTO_IPV6; portrange = IPV6_PORTRANGE; portlow = IPV6_PORTRANGE_LOW; sin6 = (struct sockaddr_in6 *)sa; salen = sizeof(struct sockaddr_in6); port = sin6->sin6_port; #endif } else { errno = EPFNOSUPPORT; return (-1); } sa->sa_family = af; sa->sa_len = salen; if (port == 0) { int 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 (port == 0) { int saved_errno = errno; if (error) { 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); } /* * 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); }
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