1 /* @(#)xdr_array.c 2.1 88/07/29 4.0 RPCSRC */
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31 static char sccsid
[] = "@(#)xdr_array.c 1.10 87/08/11 Copyr 1984 Sun Micro";
35 * xdr_array.c, Generic XDR routines implementation.
37 * Copyright (C) 1984, Sun Microsystems, Inc.
39 * These are the "non-trivial" xdr primitives used to serialize and de-serialize
40 * arrays. See xdr.h for more info on the interface to xdr.
48 #include <rpc/types.h>
57 #define LASTUNSIGNED ((u_int)0-1)
61 * XDR an array of arbitrary elements
62 * *addrp is a pointer to the array, *sizep is the number of elements.
63 * If addrp is NULL (*sizep * elsize) bytes are allocated.
64 * elsize is the size (in bytes) of each element, and elproc is the
65 * xdr procedure to call to handle each element of the array.
68 xdr_array (XDR
*xdrs
, caddr_t
*addrp
, u_int
*sizep
, u_int maxsize
, u_int elsize
, xdrproc_t elproc
)
71 caddr_t target
= *addrp
;
72 u_int c
; /* the actual element count */
76 /* like strings, arrays are really counted arrays */
77 if (!xdr_u_int (xdrs
, sizep
))
83 * XXX: Let the overflow possibly happen with XDR_FREE because mem_free()
84 * doesn't actually use its second argument anyway.
86 if ((c
> maxsize
|| c
> UINT_MAX
/ elsize
) && (xdrs
->x_op
!= XDR_FREE
))
90 nodesize
= c
* elsize
;
93 * if we are deserializing, we may need to allocate an array.
94 * We also save time by checking for a null array if we are freeing.
102 *addrp
= target
= mem_alloc (nodesize
);
106 if (_IO_fwide (stderr
, 0) > 0)
107 (void) fwprintf (stderr
, L
"%s",
108 _("xdr_array: out of memory\n"));
111 (void) fputs (_("xdr_array: out of memory\n"), stderr
);
114 memset (target
, 0, nodesize
);
124 * now we xdr each element of array
126 for (i
= 0; (i
< c
) && stat
; i
++)
128 stat
= (*elproc
) (xdrs
, target
, LASTUNSIGNED
);
133 * the array may need freeing
135 if (xdrs
->x_op
== XDR_FREE
)
137 mem_free (*addrp
, nodesize
);
142 libc_hidden_def(xdr_array
)
147 * XDR a fixed length array. Unlike variable-length arrays,
148 * the storage of fixed length arrays is static and unfreeable.
149 * > basep: base of the array
150 * > size: size of the array
151 * > elemsize: size of each element
152 * > xdr_elem: routine to XDR each element
155 xdr_vector (XDR
*xdrs
, char *basep
, u_int nelem
, u_int elemsize
,
162 for (i
= 0; i
< nelem
; i
++)
164 if (!(*xdr_elem
) (xdrs
, elptr
, LASTUNSIGNED
))