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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [librpc/] [src/] [xdr/] [xdr_mem.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: @(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";*/ /*static char *sccsid = "from: @(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC";*/ static char *rcsid = "$FreeBSD: src/lib/libc/xdr/xdr_mem.c,v 1.8 1999/08/28 00:02:56 peter Exp $"; #endif /* * xdr_mem.h, XDR implementation using memory buffers. * * Copyright (C) 1984, Sun Microsystems, Inc. * * If you have some data to be interpreted as external data representation * or to be converted to external data representation in a memory buffer, * then this is the package for you. * */ #include <string.h> #include <rpc/types.h> #include <rpc/xdr.h> #include <netinet/in.h> static bool_t xdrmem_getlong_aligned(); static bool_t xdrmem_putlong_aligned(); static bool_t xdrmem_getlong_unaligned(); static bool_t xdrmem_putlong_unaligned(); static bool_t xdrmem_getbytes(); static bool_t xdrmem_putbytes(); static u_int xdrmem_getpos(); /* XXX w/64-bit pointers, u_int not enough! */ static bool_t xdrmem_setpos(); static int32_t *xdrmem_inline_aligned(); static int32_t *xdrmem_inline_unaligned(); static void xdrmem_destroy(); static struct xdr_ops xdrmem_ops_aligned = { xdrmem_getlong_aligned, xdrmem_putlong_aligned, xdrmem_getbytes, xdrmem_putbytes, xdrmem_getpos, xdrmem_setpos, xdrmem_inline_aligned, xdrmem_destroy }; static struct xdr_ops xdrmem_ops_unaligned = { xdrmem_getlong_unaligned, xdrmem_putlong_unaligned, xdrmem_getbytes, xdrmem_putbytes, xdrmem_getpos, xdrmem_setpos, xdrmem_inline_unaligned, xdrmem_destroy }; /* * The procedure xdrmem_create initializes a stream descriptor for a * memory buffer. */ void xdrmem_create(xdrs, addr, size, op) register XDR *xdrs; caddr_t addr; u_int size; enum xdr_op op; { xdrs->x_op = op; xdrs->x_ops = ((size_t)addr & (sizeof(int32_t) - 1)) ? &xdrmem_ops_unaligned : &xdrmem_ops_aligned; xdrs->x_private = xdrs->x_base = addr; xdrs->x_handy = size; } static void xdrmem_destroy(/*xdrs*/) /*XDR *xdrs;*/ { } static bool_t xdrmem_getlong_aligned(xdrs, lp) register XDR *xdrs; long *lp; { if ((xdrs->x_handy -= sizeof(int32_t)) < 0) return (FALSE); *lp = ntohl(*(int32_t *)(xdrs->x_private)); xdrs->x_private += sizeof(int32_t); return (TRUE); } static bool_t xdrmem_putlong_aligned(xdrs, lp) register XDR *xdrs; long *lp; { if ((xdrs->x_handy -= sizeof(int32_t)) < 0) return (FALSE); *(int32_t *)xdrs->x_private = htonl(*lp); xdrs->x_private += sizeof(int32_t); return (TRUE); } static bool_t xdrmem_getlong_unaligned(xdrs, lp) register XDR *xdrs; long *lp; { int32_t l; if ((xdrs->x_handy -= sizeof(int32_t)) < 0) return (FALSE); memcpy(&l, xdrs->x_private, sizeof(int32_t)); *lp = ntohl(l); xdrs->x_private += sizeof(int32_t); return (TRUE); } static bool_t xdrmem_putlong_unaligned(xdrs, lp) register XDR *xdrs; long *lp; { int32_t l; if ((xdrs->x_handy -= sizeof(int32_t)) < 0) return (FALSE); l = htonl(*lp); memcpy(xdrs->x_private, &l, sizeof(int32_t)); xdrs->x_private += sizeof(int32_t); return (TRUE); } static bool_t xdrmem_getbytes(xdrs, addr, len) register XDR *xdrs; caddr_t addr; register u_int len; { if ((xdrs->x_handy -= len) < 0) return (FALSE); memcpy(addr, xdrs->x_private, len); xdrs->x_private += len; return (TRUE); } static bool_t xdrmem_putbytes(xdrs, addr, len) register XDR *xdrs; caddr_t addr; register u_int len; { if ((xdrs->x_handy -= len) < 0) return (FALSE); memcpy(xdrs->x_private, addr, len); xdrs->x_private += len; return (TRUE); } static u_int xdrmem_getpos(xdrs) register XDR *xdrs; { /* XXX w/64-bit pointers, u_int not enough! */ return ((u_long)xdrs->x_private - (u_long)xdrs->x_base); } static bool_t xdrmem_setpos(xdrs, pos) register XDR *xdrs; u_int pos; { register caddr_t newaddr = xdrs->x_base + pos; register caddr_t lastaddr = xdrs->x_private + xdrs->x_handy; if ((long)newaddr > (long)lastaddr) return (FALSE); xdrs->x_private = newaddr; xdrs->x_handy = (long)lastaddr - (long)newaddr; return (TRUE); } static int32_t * xdrmem_inline_aligned(xdrs, len) register XDR *xdrs; int len; { int32_t *buf = 0; if (xdrs->x_handy >= len) { xdrs->x_handy -= len; buf = (int32_t *) xdrs->x_private; xdrs->x_private += len; } return (buf); } static int32_t * xdrmem_inline_unaligned(xdrs, len) register XDR *xdrs; int len; { return (0); }
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