1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * Portions of this source code were derived from Berkeley 4.3 BSD 32 * under license from the Regents of the University of California. 33 */ 34 35 #ifndef _OPENSOLARIS_RPC_XDR_H_ 36 #define _OPENSOLARIS_RPC_XDR_H_ 37 38 #include_next <rpc/xdr.h> 39 40 #ifndef _KERNEL 41 #include_next <rpc/xdr.h> 42 43 /* 44 * Strangely, my glibc version (2.3.6) doesn't have xdr_control(), so 45 * we have to hack it in here (source taken from OpenSolaris). 46 * By the way, it is assumed the xdrmem implementation is used. 47 */ 48 49 #undef xdr_control 50 #define xdr_control(a,b,c) xdrmem_control(a,b,c) 51 52 /* 53 * These are XDR control operators 54 */ 55 56 #define XDR_GET_BYTES_AVAIL 1 57 58 struct xdr_bytesrec { 59 bool_t xc_is_last_record; 60 size_t xc_num_avail; 61 }; 62 63 typedef struct xdr_bytesrec xdr_bytesrec; 64 65 /* 66 * These are the request arguments to XDR_CONTROL. 67 * 68 * XDR_PEEK - returns the contents of the next XDR unit on the XDR stream. 69 * XDR_SKIPBYTES - skips the next N bytes in the XDR stream. 70 * XDR_RDMAGET - for xdr implementation over RDMA, gets private flags from 71 * the XDR stream being moved over RDMA 72 * XDR_RDMANOCHUNK - for xdr implementaion over RDMA, sets private flags in 73 * the XDR stream moving over RDMA. 74 */ 75 #define XDR_PEEK 2 76 #define XDR_SKIPBYTES 3 77 #define XDR_RDMAGET 4 78 #define XDR_RDMASET 5 79 80 /* FIXME: probably doesn't work */ 81 static __inline bool_t 82 xdrmem_control(XDR *xdrs, int request, void *info) 83 { 84 xdr_bytesrec *xptr; 85 int32_t *int32p; 86 int len; 87 88 switch (request) { 89 90 case XDR_GET_BYTES_AVAIL: 91 xptr = (xdr_bytesrec *)info; 92 xptr->xc_is_last_record = TRUE; 93 xptr->xc_num_avail = xdrs->x_handy; 94 return (TRUE); 95 96 case XDR_PEEK: 97 /* 98 * Return the next 4 byte unit in the XDR stream. 99 */ 100 if (xdrs->x_handy < sizeof (int32_t)) 101 return (FALSE); 102 int32p = (int32_t *)info; 103 *int32p = (int32_t)ntohl((uint32_t) 104 (*((int32_t *)(xdrs->x_private)))); 105 return (TRUE); 106 107 case XDR_SKIPBYTES: 108 /* 109 * Skip the next N bytes in the XDR stream. 110 */ 111 int32p = (int32_t *)info; 112 len = RNDUP((int)(*int32p)); 113 if ((xdrs->x_handy -= len) < 0) 114 return (FALSE); 115 xdrs->x_private += len; 116 return (TRUE); 117 118 } 119 return (FALSE); 120 } 121 #endif /* !_KERNEL */ 122 123 #endif /* !_OPENSOLARIS_RPC_XDR_H_ */ 124