2 * xdr_array.c, Generic XDR routines implementation.
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33 * These are the "non-trivial" xdr primitives used to serialize and
34 * de-serialize arrays. See xdr.h for more info on the interface to xdr.
39 #include <rpc/types.h>
45 #define LASTUNSIGNED ((u_int)0-1)
49 * XDR an array of arbitrary elements
50 * *addrp is a pointer to the array, *sizep is the number of elements.
51 * If addrp is NULL (*sizep * elsize) bytes are allocated.
52 * elsize is the size (in bytes) of each element, and elproc is the
53 * xdr procedure to call to handle each element of the array.
56 xdr_array (xdrs, addrp, sizep, maxsize, elsize, elproc)
58 caddr_t *addrp; /* array pointer */
59 u_int *sizep; /* number of elements */
60 u_int maxsize; /* max numberof elements */
61 u_int elsize; /* size in bytes of each element */
62 xdrproc_t elproc; /* xdr routine to handle each element */
65 caddr_t target = *addrp;
66 u_int c; /* the actual element count */
69 /* like strings, arrays are really counted arrays */
70 if (!xdr_u_int (xdrs, sizep))
76 * XXX: Let the overflow possibly happen with XDR_FREE because mem_free()
77 * doesn't actually use its second argument anyway.
79 if ((c > maxsize || c > UINT_MAX / elsize) && (xdrs->x_op != XDR_FREE))
85 * if we are deserializing, we may need to allocate an array.
86 * We also save time by checking for a null array if we are freeing.
94 *addrp = target = calloc (c, elsize);
97 (void) __fxprintf (NULL, "%s: %s", __func__, _("out of memory\n"));
109 * now we xdr each element of array
111 for (i = 0; (i < c) && stat; i++)
113 stat = (*elproc) (xdrs, target, LASTUNSIGNED);
118 * the array may need freeing
120 if (xdrs->x_op == XDR_FREE)
122 mem_free (*addrp, c * elsize);
127 #ifdef EXPORT_RPC_SYMBOLS
128 libc_hidden_def (xdr_array)
130 libc_hidden_nolink_sunrpc (xdr_array, GLIBC_2_0)
136 * XDR a fixed length array. Unlike variable-length arrays,
137 * the storage of fixed length arrays is static and unfreeable.
138 * > basep: base of the array
139 * > size: size of the array
140 * > elemsize: size of each element
141 * > xdr_elem: routine to XDR each element
144 xdr_vector (xdrs, basep, nelem, elemsize, xdr_elem)
155 for (i = 0; i < nelem; i++)
157 if (!(*xdr_elem) (xdrs, elptr, LASTUNSIGNED))
165 libc_hidden_nolink_sunrpc (xdr_vector, GLIBC_2_0)