1 /*
2 * Copyright (c) 2009, Sun Microsystems, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
12 * - Neither the name of Sun Microsystems, Inc. nor the names of its
13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28 /*
29 * xdr_sizeof.c
30 *
31 * Copyright 1990 Sun Microsystems, Inc.
32 *
33 * General purpose routine to see how much space something will use
34 * when serialized using XDR.
35 */
36
37 //#include <sys/cdefs.h>
38
39 #include <wintirpc.h>
40 #include "namespace.h"
41 #include <rpc/types.h>
42 #include <rpc/xdr.h>
43 #include <sys/types.h>
44 #include <stdlib.h>
45 #include "un-namespace.h"
46
47 /* ARGSUSED */
48 static bool_t
x_putlong(XDR * xdrs,const long * longp)49 x_putlong(XDR *xdrs, const long *longp)
50 {
51 xdrs->x_handy += BYTES_PER_XDR_UNIT;
52 return (TRUE);
53 }
54
55 /* ARGSUSED */
56 static bool_t
x_putbytes(XDR * xdrs,const char * bp,u_int len)57 x_putbytes(XDR *xdrs, const char *bp, u_int len)
58 {
59 xdrs->x_handy += len;
60 return (TRUE);
61 }
62
63 static u_int
x_getpostn(XDR * xdrs)64 x_getpostn(XDR *xdrs)
65 {
66 return (xdrs->x_handy);
67 }
68
69 /* ARGSUSED */
70 static bool_t
x_setpostn(XDR * xdrs,u_int pos)71 x_setpostn(XDR *xdrs, u_int pos)
72 {
73 /* This is not allowed */
74 return (FALSE);
75 }
76
77 static int32_t *
x_inline(XDR * xdrs,u_int len)78 x_inline(XDR *xdrs, u_int len)
79 {
80 if (len == 0) {
81 return (NULL);
82 }
83 if (xdrs->x_op != XDR_ENCODE) {
84 return (NULL);
85 }
86 if (len < PtrToUlong(xdrs->x_base)) {
87 /* x_private was already allocated */
88 xdrs->x_handy += len;
89 return ((int32_t *) xdrs->x_private);
90 } else {
91 /* Free the earlier space and allocate new area */
92 if (xdrs->x_private)
93 free(xdrs->x_private);
94 if ((xdrs->x_private = (caddr_t) malloc(len)) == NULL) {
95 xdrs->x_base = 0;
96 return (NULL);
97 }
98 xdrs->x_base = UIntToPtr(len);
99 //xdrs->x_base = len; // XXX Is this right???
100 xdrs->x_handy += len;
101 return ((int32_t *) xdrs->x_private);
102 }
103 }
104
105 static int
harmless()106 harmless()
107 {
108 /* Always return FALSE/NULL, as the case may be */
109 return (0);
110 }
111
112 static void
x_destroy(XDR * xdrs)113 x_destroy(XDR *xdrs)
114 {
115 xdrs->x_handy = 0;
116 xdrs->x_base = 0;
117 if (xdrs->x_private) {
118 free(xdrs->x_private);
119 xdrs->x_private = NULL;
120 }
121 return;
122 }
123
124 unsigned long
xdr_sizeof(func,data)125 xdr_sizeof(func, data)
126 xdrproc_t func;
127 void *data;
128 {
129 XDR x;
130 struct xdr_ops ops;
131 bool_t stat;
132 /* to stop ANSI-C compiler from complaining */
133 typedef bool_t (* dummyfunc1)(XDR *, long *);
134 typedef bool_t (* dummyfunc2)(XDR *, caddr_t, u_int);
135
136 ops.x_putlong = x_putlong;
137 ops.x_putbytes = x_putbytes;
138 ops.x_inline = x_inline;
139 ops.x_getpostn = x_getpostn;
140 ops.x_setpostn = x_setpostn;
141 ops.x_destroy = x_destroy;
142
143 /* the other harmless ones */
144 ops.x_getlong = (dummyfunc1) harmless;
145 ops.x_getbytes = (dummyfunc2) harmless;
146
147 x.x_op = XDR_ENCODE;
148 x.x_ops = &ops;
149 x.x_handy = 0;
150 x.x_private = (caddr_t) NULL;
151 x.x_base = (caddr_t) 0;
152
153 stat = func(&x, data);
154 if (x.x_private)
155 free(x.x_private);
156 return (stat == TRUE ? (unsigned) x.x_handy: 0);
157 }
158