source: rtems/cpukit/librpc/src/xdr/xdr_array.c @ 3239698

4.104.114.84.9
Last change on this file since 3239698 was 3239698, checked in by Ralf Corsepius <ralf.corsepius@…>, on Apr 15, 2004 at 1:26:21 PM

Remove stray white spaces.

  • Property mode set to 100644
File size: 4.4 KB
Line 
1/*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part.  Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California  94043
28 */
29
30#if defined(LIBC_SCCS) && !defined(lint)
31/*static char *sccsid = "from: @(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro";*/
32/*static char *sccsid = "from: @(#)xdr_array.c  2.1 88/07/29 4.0 RPCSRC";*/
33static char *rcsid = "$FreeBSD: src/lib/libc/xdr/xdr_array.c,v 1.8 1999/08/28 00:02:55 peter Exp $";
34#endif
35
36/*
37 * xdr_array.c, Generic XDR routines impelmentation.
38 *
39 * Copyright (C) 1984, Sun Microsystems, Inc.
40 *
41 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
42 * arrays.  See xdr.h for more info on the interface to xdr.
43 */
44
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <rpc/types.h>
49#include <rpc/xdr.h>
50
51#define LASTUNSIGNED ((u_int) 0-1)
52
53/*
54 * XDR an array of arbitrary elements
55 * *addrp is a pointer to the array, *sizep is the number of elements.
56 * If addrp is NULL (*sizep * elsize) bytes are allocated.
57 * elsize is the size (in bytes) of each element, and elproc is the
58 * xdr procedure to call to handle each element of the array.
59 */
60bool_t
61xdr_array(xdrs, addrp, sizep, maxsize, elsize, elproc)
62        register XDR *xdrs;
63        caddr_t *addrp;         /* array pointer */
64        u_int *sizep;           /* number of elements */
65        u_int maxsize;          /* max numberof elements */
66        u_int elsize;           /* size in bytes of each element */
67        xdrproc_t elproc;       /* xdr routine to handle each element */
68{
69        register u_int i;
70        register caddr_t target = *addrp;
71        register u_int c;  /* the actual element count */
72        register bool_t stat = TRUE;
73        register u_int nodesize;
74
75        /* like strings, arrays are really counted arrays */
76        if (! xdr_u_int(xdrs, sizep)) {
77                return (FALSE);
78        }
79        c = *sizep;
80        if ((c > maxsize) && (xdrs->x_op != XDR_FREE)) {
81                return (FALSE);
82        }
83        nodesize = c * elsize;
84
85        /*
86         * if we are deserializing, we may need to allocate an array.
87         * We also save time by checking for a null array if we are freeing.
88         */
89        if (target == NULL)
90                switch (xdrs->x_op) {
91                case XDR_DECODE:
92                        if (c == 0)
93                                return (TRUE);
94                        *addrp = target = mem_alloc(nodesize);
95                        if (target == NULL) {
96                                (void) fprintf(stderr,
97                                        "xdr_array: out of memory\n");
98                                return (FALSE);
99                        }
100                        memset(target, 0, nodesize);
101                        break;
102
103                case XDR_FREE:
104                        return (TRUE);
105                case XDR_ENCODE:  /* to avoid warning */
106                        break;
107        }
108
109        /*
110         * now we xdr each element of array
111         */
112        for (i = 0; (i < c) && stat; i++) {
113                stat = (*elproc)(xdrs, target, LASTUNSIGNED);
114                target += elsize;
115        }
116
117        /*
118         * the array may need freeing
119         */
120        if (xdrs->x_op == XDR_FREE) {
121                mem_free(*addrp, nodesize);
122                *addrp = NULL;
123        }
124        return (stat);
125}
126
127/*
128 * xdr_vector():
129 *
130 * XDR a fixed length array. Unlike variable-length arrays,
131 * the storage of fixed length arrays is static and unfreeable.
132 * > basep: base of the array
133 * > size: size of the array
134 * > elemsize: size of each element
135 * > xdr_elem: routine to XDR each element
136 */
137bool_t
138xdr_vector(xdrs, basep, nelem, elemsize, xdr_elem)
139        register XDR *xdrs;
140        register char *basep;
141        register u_int nelem;
142        register u_int elemsize;
143        register xdrproc_t xdr_elem;
144{
145        register u_int i;
146        register char *elptr;
147
148        elptr = basep;
149        for (i = 0; i < nelem; i++) {
150                if (! (*xdr_elem)(xdrs, elptr, LASTUNSIGNED)) {
151                        return(FALSE);
152                }
153                elptr += elemsize;
154        }
155        return(TRUE);
156}
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