1 /* @(#)xdr_mem.c 2.1 88/07/29 4.0 RPCSRC */
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30 #if !defined(lint) && defined(SCCSIDS)
31 static char sccsid[] = "@(#)xdr_mem.c 1.19 87/08/11 Copyr 1984 Sun Micro";
35 * xdr_mem.h, XDR implementation using memory buffers.
37 * Copyright (C) 1984, Sun Microsystems, Inc.
39 * If you have some data to be interpreted as external data representation
40 * or to be converted to external data representation in a memory buffer,
41 * then this is the package for you.
49 static bool_t xdrmem_getlong (XDR *, long *);
50 static bool_t xdrmem_putlong (XDR *, long *);
51 static bool_t xdrmem_getbytes (XDR *, caddr_t, u_int);
52 static bool_t xdrmem_putbytes (XDR *, caddr_t, u_int);
53 static u_int xdrmem_getpos (XDR *);
54 static bool_t xdrmem_setpos (XDR *, u_int);
55 static long *xdrmem_inline (XDR *, int);
56 static void xdrmem_destroy (XDR *);
58 static const struct xdr_ops xdrmem_ops =
71 * The procedure xdrmem_create initializes a stream descriptor for a
75 xdrmem_create (xdrs, addr, size, op)
83 xdrs->x_ops = &xdrmem_ops;
84 xdrs->x_private = xdrs->x_base = addr;
89 xdrmem_destroy (XDR *xdrs)
94 xdrmem_getlong (xdrs, lp)
99 if ((xdrs->x_handy -= 4) < 0)
101 *lp = (int32_t) ntohl ((*((int32_t *) (xdrs->x_private))));
102 xdrs->x_private += 4;
107 xdrmem_putlong (xdrs, lp)
112 if ((xdrs->x_handy -= 4) < 0)
114 *(int32_t *) xdrs->x_private = htonl (*lp);
115 xdrs->x_private += 4;
120 xdrmem_getbytes (xdrs, addr, len)
126 if ((xdrs->x_handy -= len) < 0)
128 bcopy (xdrs->x_private, addr, len);
129 xdrs->x_private += len;
134 xdrmem_putbytes (xdrs, addr, len)
140 if ((xdrs->x_handy -= len) < 0)
142 bcopy (addr, xdrs->x_private, len);
143 xdrs->x_private += len;
152 return (u_long) xdrs->x_private - (u_long) xdrs->x_base;
156 xdrmem_setpos (xdrs, pos)
160 caddr_t newaddr = xdrs->x_base + pos;
161 caddr_t lastaddr = xdrs->x_private + xdrs->x_handy;
163 if ((long) newaddr > (long) lastaddr)
165 xdrs->x_private = newaddr;
166 xdrs->x_handy = (long) lastaddr - (long) newaddr;
171 xdrmem_inline (xdrs, len)
177 if (xdrs->x_handy >= len)
179 xdrs->x_handy -= len;
180 buf = (long *) xdrs->x_private;
181 xdrs->x_private += len;