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805e021f CE |
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 | #include <afsconfig.h> | |
30 | #include <afs/param.h> | |
31 | ||
32 | ||
33 | #if defined(AFS_OBSD44_ENV) && defined(KERNEL) && !defined(UKERNEL) | |
34 | /* XXX osi_alloc, please find and fix */ | |
35 | #include "osi_machdep.h" | |
36 | #endif | |
37 | ||
38 | #if !defined(NeXT) | |
39 | ||
40 | /* | |
41 | * xdr_array.c, Generic XDR routines impelmentation. | |
42 | * | |
43 | * Copyright (C) 1984, Sun Microsystems, Inc. | |
44 | * | |
45 | * These are the "non-trivial" xdr primitives used to serialize and de-serialize | |
46 | * arrays. See xdr.h for more info on the interface to xdr. | |
47 | */ | |
48 | ||
49 | #if defined(KERNEL) && !defined(UKERNEL) | |
50 | #if !defined(AFS_LINUX26_ENV) | |
51 | #include <sys/param.h> | |
52 | #endif | |
53 | #ifdef AFS_LINUX20_ENV | |
54 | #include "h/string.h" | |
55 | #else | |
56 | #include <sys/systm.h> | |
57 | #endif | |
58 | #else | |
59 | #include <roken.h> | |
60 | #endif | |
61 | #include "xdr.h" | |
62 | ||
63 | #define LASTUNSIGNED ((u_int)0-1) | |
64 | ||
65 | ||
66 | /* | |
67 | * XDR an array of arbitrary elements | |
68 | * *addrp is a pointer to the array, *sizep is the number of elements. | |
69 | * If addrp is NULL (*sizep * elsize) bytes are allocated. | |
70 | * elsize is the size (in bytes) of each element, and elproc is the | |
71 | * xdr procedure to call to handle each element of the array. | |
72 | */ | |
73 | /* | |
74 | caddr_t *addrp; * array pointer * | |
75 | u_int *sizep; * number of elements * | |
76 | u_int maxsize; * max numberof elements * | |
77 | u_int elsize; * size in bytes of each element * | |
78 | xdrproc_t elproc; * xdr routine to handle each element * | |
79 | */ | |
80 | #ifdef KERNEL | |
81 | bool_t | |
82 | xdr_arrayN(XDR * xdrs, caddr_t * addrp, u_int * sizep, u_int maxsize, | |
83 | u_int elsize, xdrproc_t elproc) | |
84 | { | |
85 | u_int i; | |
86 | caddr_t target = *addrp; | |
87 | u_int c; /* the actual element count */ | |
88 | bool_t stat = TRUE; | |
89 | u_int nodesize; | |
90 | ||
91 | i = ((~0) >> 1) / elsize; | |
92 | if (maxsize > i) | |
93 | maxsize = i; | |
94 | ||
95 | /* like strings, arrays are really counted arrays */ | |
96 | if (!xdr_u_int(xdrs, sizep)) { | |
97 | return (FALSE); | |
98 | } | |
99 | c = *sizep; | |
100 | if ((c > maxsize) && (xdrs->x_op != XDR_FREE)) { | |
101 | return (FALSE); | |
102 | } | |
103 | nodesize = c * elsize; | |
104 | ||
105 | /* | |
106 | * if we are deserializing, we may need to allocate an array. | |
107 | * We also save time by checking for a null array if we are freeing. | |
108 | */ | |
109 | if (target == NULL) | |
110 | switch (xdrs->x_op) { | |
111 | case XDR_DECODE: | |
112 | if (c == 0) | |
113 | return (TRUE); | |
114 | *addrp = target = (caddr_t) osi_alloc(nodesize); | |
115 | if (target == NULL) { | |
116 | return (FALSE); | |
117 | } | |
118 | memset(target, 0, (u_int) nodesize); | |
119 | break; | |
120 | ||
121 | case XDR_FREE: | |
122 | return (TRUE); | |
123 | ||
124 | case XDR_ENCODE: | |
125 | break; | |
126 | } | |
127 | ||
128 | /* | |
129 | * now we xdr each element of array | |
130 | */ | |
131 | for (i = 0; (i < c) && stat; i++) { | |
132 | stat = (*elproc) (xdrs, target, LASTUNSIGNED); | |
133 | target += elsize; | |
134 | } | |
135 | ||
136 | /* | |
137 | * the array may need freeing | |
138 | */ | |
139 | if (xdrs->x_op == XDR_FREE) { | |
140 | osi_free(*addrp, nodesize); | |
141 | *addrp = NULL; | |
142 | } | |
143 | return (stat); | |
144 | } | |
145 | #endif | |
146 | #endif /* NeXT */ |