[f41a394] | 1 | #include <machine/rtems-bsd-user-space.h> |
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| 2 | |
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| 3 | /* $NetBSD: xdr_mem.c,v 1.15 2000/01/22 22:19:18 mycroft Exp $ */ |
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| 4 | |
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| 5 | /* |
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| 6 | * Sun RPC is a product of Sun Microsystems, Inc. and is provided for |
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| 7 | * unrestricted use provided that this legend is included on all tape |
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| 8 | * media and as a part of the software program in whole or part. Users |
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| 9 | * may copy or modify Sun RPC without charge, but are not authorized |
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| 10 | * to license or distribute it to anyone else except as part of a product or |
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| 11 | * program developed by the user. |
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| 12 | * |
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| 13 | * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE |
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| 14 | * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR |
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| 15 | * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. |
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| 16 | * |
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| 17 | * Sun RPC is provided with no support and without any obligation on the |
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| 18 | * part of Sun Microsystems, Inc. to assist in its use, correction, |
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| 19 | * modification or enhancement. |
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| 20 | * |
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| 21 | * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE |
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| 22 | * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC |
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| 23 | * OR ANY PART THEREOF. |
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| 24 | * |
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| 25 | * In no event will Sun Microsystems, Inc. be liable for any lost revenue |
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| 26 | * or profits or other special, indirect and consequential damages, even if |
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| 27 | * Sun has been advised of the possibility of such damages. |
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| 28 | * |
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| 29 | * Sun Microsystems, Inc. |
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| 30 | * 2550 Garcia Avenue |
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| 31 | * Mountain View, California 94043 |
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| 32 | */ |
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| 33 | |
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| 34 | #if defined(LIBC_SCCS) && !defined(lint) |
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| 35 | static char *sccsid2 = "@(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro"; |
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| 36 | static char *sccsid = "@(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC"; |
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| 37 | #endif |
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| 38 | #include <sys/cdefs.h> |
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| 39 | __FBSDID("$FreeBSD$"); |
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| 40 | |
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| 41 | /* |
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| 42 | * xdr_mem.h, XDR implementation using memory buffers. |
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| 43 | * |
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| 44 | * Copyright (C) 1984, Sun Microsystems, Inc. |
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| 45 | * |
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| 46 | * If you have some data to be interpreted as external data representation |
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| 47 | * or to be converted to external data representation in a memory buffer, |
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| 48 | * then this is the package for you. |
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| 49 | * |
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| 50 | */ |
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| 51 | |
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| 52 | #include "namespace.h" |
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| 53 | #include <sys/types.h> |
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| 54 | |
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| 55 | #include <netinet/in.h> |
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| 56 | |
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| 57 | #include <string.h> |
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| 58 | |
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| 59 | #include <rpc/types.h> |
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| 60 | #include <rpc/xdr.h> |
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| 61 | #include "un-namespace.h" |
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| 62 | |
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| 63 | static void xdrmem_destroy(XDR *); |
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| 64 | static bool_t xdrmem_getlong_aligned(XDR *, long *); |
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| 65 | static bool_t xdrmem_putlong_aligned(XDR *, const long *); |
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| 66 | static bool_t xdrmem_getlong_unaligned(XDR *, long *); |
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| 67 | static bool_t xdrmem_putlong_unaligned(XDR *, const long *); |
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| 68 | static bool_t xdrmem_getbytes(XDR *, char *, u_int); |
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| 69 | static bool_t xdrmem_putbytes(XDR *, const char *, u_int); |
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| 70 | /* XXX: w/64-bit pointers, u_int not enough! */ |
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| 71 | static u_int xdrmem_getpos(XDR *); |
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| 72 | static bool_t xdrmem_setpos(XDR *, u_int); |
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| 73 | static int32_t *xdrmem_inline_aligned(XDR *, u_int); |
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| 74 | static int32_t *xdrmem_inline_unaligned(XDR *, u_int); |
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| 75 | |
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| 76 | static const struct xdr_ops xdrmem_ops_aligned = { |
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| 77 | xdrmem_getlong_aligned, |
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| 78 | xdrmem_putlong_aligned, |
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| 79 | xdrmem_getbytes, |
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| 80 | xdrmem_putbytes, |
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| 81 | xdrmem_getpos, |
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| 82 | xdrmem_setpos, |
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| 83 | xdrmem_inline_aligned, |
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| 84 | xdrmem_destroy |
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| 85 | }; |
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| 86 | |
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| 87 | static const struct xdr_ops xdrmem_ops_unaligned = { |
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| 88 | xdrmem_getlong_unaligned, |
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| 89 | xdrmem_putlong_unaligned, |
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| 90 | xdrmem_getbytes, |
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| 91 | xdrmem_putbytes, |
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| 92 | xdrmem_getpos, |
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| 93 | xdrmem_setpos, |
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| 94 | xdrmem_inline_unaligned, |
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| 95 | xdrmem_destroy |
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| 96 | }; |
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| 97 | |
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| 98 | /* |
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| 99 | * The procedure xdrmem_create initializes a stream descriptor for a |
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| 100 | * memory buffer. |
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| 101 | */ |
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| 102 | void |
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| 103 | xdrmem_create(xdrs, addr, size, op) |
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| 104 | XDR *xdrs; |
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| 105 | char *addr; |
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| 106 | u_int size; |
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| 107 | enum xdr_op op; |
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| 108 | { |
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| 109 | |
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| 110 | xdrs->x_op = op; |
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| 111 | xdrs->x_ops = ((unsigned long)addr & (sizeof(int32_t) - 1)) |
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| 112 | ? &xdrmem_ops_unaligned : &xdrmem_ops_aligned; |
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| 113 | xdrs->x_private = xdrs->x_base = addr; |
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| 114 | xdrs->x_handy = size; |
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| 115 | } |
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| 116 | |
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| 117 | /*ARGSUSED*/ |
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| 118 | static void |
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| 119 | xdrmem_destroy(xdrs) |
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| 120 | XDR *xdrs; |
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| 121 | { |
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| 122 | |
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| 123 | } |
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| 124 | |
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| 125 | static bool_t |
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| 126 | xdrmem_getlong_aligned(xdrs, lp) |
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| 127 | XDR *xdrs; |
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| 128 | long *lp; |
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| 129 | { |
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| 130 | |
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| 131 | if (xdrs->x_handy < sizeof(int32_t)) |
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| 132 | return (FALSE); |
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| 133 | xdrs->x_handy -= sizeof(int32_t); |
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| 134 | *lp = ntohl(*(u_int32_t *)xdrs->x_private); |
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| 135 | xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t); |
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| 136 | return (TRUE); |
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| 137 | } |
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| 138 | |
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| 139 | static bool_t |
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| 140 | xdrmem_putlong_aligned(xdrs, lp) |
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| 141 | XDR *xdrs; |
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| 142 | const long *lp; |
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| 143 | { |
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| 144 | |
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| 145 | if (xdrs->x_handy < sizeof(int32_t)) |
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| 146 | return (FALSE); |
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| 147 | xdrs->x_handy -= sizeof(int32_t); |
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| 148 | *(u_int32_t *)xdrs->x_private = htonl((u_int32_t)*lp); |
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| 149 | xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t); |
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| 150 | return (TRUE); |
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| 151 | } |
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| 152 | |
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| 153 | static bool_t |
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| 154 | xdrmem_getlong_unaligned(xdrs, lp) |
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| 155 | XDR *xdrs; |
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| 156 | long *lp; |
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| 157 | { |
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| 158 | u_int32_t l; |
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| 159 | |
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| 160 | if (xdrs->x_handy < sizeof(int32_t)) |
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| 161 | return (FALSE); |
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| 162 | xdrs->x_handy -= sizeof(int32_t); |
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| 163 | memmove(&l, xdrs->x_private, sizeof(int32_t)); |
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| 164 | *lp = ntohl(l); |
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| 165 | xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t); |
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| 166 | return (TRUE); |
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| 167 | } |
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| 168 | |
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| 169 | static bool_t |
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| 170 | xdrmem_putlong_unaligned(xdrs, lp) |
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| 171 | XDR *xdrs; |
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| 172 | const long *lp; |
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| 173 | { |
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| 174 | u_int32_t l; |
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| 175 | |
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| 176 | if (xdrs->x_handy < sizeof(int32_t)) |
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| 177 | return (FALSE); |
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| 178 | xdrs->x_handy -= sizeof(int32_t); |
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| 179 | l = htonl((u_int32_t)*lp); |
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| 180 | memmove(xdrs->x_private, &l, sizeof(int32_t)); |
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| 181 | xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t); |
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| 182 | return (TRUE); |
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| 183 | } |
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| 184 | |
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| 185 | static bool_t |
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| 186 | xdrmem_getbytes(xdrs, addr, len) |
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| 187 | XDR *xdrs; |
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| 188 | char *addr; |
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| 189 | u_int len; |
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| 190 | { |
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| 191 | |
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| 192 | if (xdrs->x_handy < len) |
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| 193 | return (FALSE); |
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| 194 | xdrs->x_handy -= len; |
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| 195 | memmove(addr, xdrs->x_private, len); |
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| 196 | xdrs->x_private = (char *)xdrs->x_private + len; |
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| 197 | return (TRUE); |
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| 198 | } |
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| 199 | |
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| 200 | static bool_t |
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| 201 | xdrmem_putbytes(xdrs, addr, len) |
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| 202 | XDR *xdrs; |
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| 203 | const char *addr; |
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| 204 | u_int len; |
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| 205 | { |
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| 206 | |
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| 207 | if (xdrs->x_handy < len) |
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| 208 | return (FALSE); |
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| 209 | xdrs->x_handy -= len; |
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| 210 | memmove(xdrs->x_private, addr, len); |
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| 211 | xdrs->x_private = (char *)xdrs->x_private + len; |
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| 212 | return (TRUE); |
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| 213 | } |
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| 214 | |
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| 215 | static u_int |
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| 216 | xdrmem_getpos(xdrs) |
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| 217 | XDR *xdrs; |
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| 218 | { |
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| 219 | |
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| 220 | /* XXX w/64-bit pointers, u_int not enough! */ |
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| 221 | return (u_int)((u_long)xdrs->x_private - (u_long)xdrs->x_base); |
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| 222 | } |
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| 223 | |
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| 224 | static bool_t |
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| 225 | xdrmem_setpos(xdrs, pos) |
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| 226 | XDR *xdrs; |
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| 227 | u_int pos; |
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| 228 | { |
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| 229 | char *newaddr = xdrs->x_base + pos; |
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| 230 | char *lastaddr = (char *)xdrs->x_private + xdrs->x_handy; |
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| 231 | |
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| 232 | if (newaddr > lastaddr) |
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| 233 | return (FALSE); |
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| 234 | xdrs->x_private = newaddr; |
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| 235 | xdrs->x_handy = (u_int)(lastaddr - newaddr); /* XXX sizeof(u_int) <? sizeof(ptrdiff_t) */ |
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| 236 | return (TRUE); |
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| 237 | } |
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| 238 | |
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| 239 | static int32_t * |
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| 240 | xdrmem_inline_aligned(xdrs, len) |
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| 241 | XDR *xdrs; |
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| 242 | u_int len; |
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| 243 | { |
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| 244 | int32_t *buf = 0; |
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| 245 | |
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| 246 | if (xdrs->x_handy >= len) { |
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| 247 | xdrs->x_handy -= len; |
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| 248 | buf = (int32_t *)xdrs->x_private; |
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| 249 | xdrs->x_private = (char *)xdrs->x_private + len; |
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| 250 | } |
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| 251 | return (buf); |
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| 252 | } |
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| 253 | |
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| 254 | /* ARGSUSED */ |
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| 255 | static int32_t * |
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| 256 | xdrmem_inline_unaligned(xdrs, len) |
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| 257 | XDR *xdrs; |
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| 258 | u_int len; |
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| 259 | { |
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| 260 | |
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| 261 | return (0); |
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| 262 | } |
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