projects / mirror_zfs-debian.git / blame
| Commit | Line | Data |
|---|---|---|
| 34dc7c2f BB |
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 _SOL_RPC_XDR_H_ | |
| 36 | #define _SOL_RPC_XDR_H_ | |
| 37 | ||
| 38 | #include_next <rpc/xdr.h> | |
| 39 | ||
| 40 | /* | |
| 41 | * Strangely, my glibc version (2.3.6) doesn't have xdr_control(), so | |
| 42 | * we have to hack it in here (source taken from OpenSolaris). | |
| 43 | * By the way, it is assumed the xdrmem implementation is used. | |
| 44 | */ | |
| 45 | ||
| 46 | #define xdr_control(a,b,c) xdrmem_control(a,b,c) | |
| 47 | ||
| 48 | /* | |
| 49 | * These are XDR control operators | |
| 50 | */ | |
| 51 | ||
| 52 | #define XDR_GET_BYTES_AVAIL 1 | |
| 53 | ||
| 54 | struct xdr_bytesrec { | |
| 55 | bool_t xc_is_last_record; | |
| 56 | size_t xc_num_avail; | |
| 57 | }; | |
| 58 | ||
| 59 | typedef struct xdr_bytesrec xdr_bytesrec; | |
| 60 | ||
| 61 | /* | |
| 62 | * These are the request arguments to XDR_CONTROL. | |
| 63 | * | |
| 64 | * XDR_PEEK - returns the contents of the next XDR unit on the XDR stream. | |
| 65 | * XDR_SKIPBYTES - skips the next N bytes in the XDR stream. | |
| 66 | * XDR_RDMAGET - for xdr implementation over RDMA, gets private flags from | |
| 67 | * the XDR stream being moved over RDMA | |
| 68 | * XDR_RDMANOCHUNK - for xdr implementaion over RDMA, sets private flags in | |
| 69 | * the XDR stream moving over RDMA. | |
| 70 | */ | |
| 71 | #define XDR_PEEK 2 | |
| 72 | #define XDR_SKIPBYTES 3 | |
| 73 | #define XDR_RDMAGET 4 | |
| 74 | #define XDR_RDMASET 5 | |
| 75 | ||
| 76 | /* FIXME: probably doesn't work */ | |
| 77 | static bool_t | |
| 78 | xdrmem_control(XDR *xdrs, int request, void *info) | |
| 79 | { | |
| 80 | xdr_bytesrec *xptr; | |
| 81 | int32_t *int32p; | |
| 82 | int len; | |
| 83 | ||
| 84 | switch (request) { | |
| 85 | ||
| 86 | case XDR_GET_BYTES_AVAIL: | |
| 87 | xptr = (xdr_bytesrec *)info; | |
| 88 | xptr->xc_is_last_record = TRUE; | |
| 89 | xptr->xc_num_avail = xdrs->x_handy; | |
| 90 | return (TRUE); | |
| 91 | ||
| 92 | case XDR_PEEK: | |
| 93 | /* | |
| 94 | * Return the next 4 byte unit in the XDR stream. | |
| 95 | */ | |
| 96 | if (xdrs->x_handy < sizeof (int32_t)) | |
| 97 | return (FALSE); | |
| 98 | int32p = (int32_t *)info; | |
| 99 | *int32p = (int32_t)ntohl((uint32_t) | |
| 100 | (*((int32_t *)(xdrs->x_private)))); | |
| 101 | return (TRUE); | |
| 102 | ||
| 103 | case XDR_SKIPBYTES: | |
| 104 | /* | |
| 105 | * Skip the next N bytes in the XDR stream. | |
| 106 | */ | |
| 107 | int32p = (int32_t *)info; | |
| 108 | len = RNDUP((int)(*int32p)); | |
| 109 | if ((xdrs->x_handy -= len) < 0) | |
| 110 | return (FALSE); | |
| 111 | xdrs->x_private += len; | |
| 112 | return (TRUE); | |
| 113 | ||
| 114 | } | |
| 115 | return (FALSE); | |
| 116 | } | |
| 117 | ||
| 118 | #endif |