8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
158 lines
4.0 KiB
C
158 lines
4.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2010, Oracle America, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the "Oracle America, Inc." nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* xdr_sizeof.c
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*
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* General purpose routine to see how much space something will use
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* when serialized using XDR.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "namespace.h"
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#include <rpc/types.h>
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#include <rpc/xdr.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include "un-namespace.h"
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/* ARGSUSED */
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static bool_t
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x_putlong(XDR *xdrs, const long *longp)
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{
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xdrs->x_handy += BYTES_PER_XDR_UNIT;
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return (TRUE);
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}
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/* ARGSUSED */
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static bool_t
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x_putbytes(XDR *xdrs, const char *bp, u_int len)
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{
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xdrs->x_handy += len;
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return (TRUE);
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}
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static u_int
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x_getpostn(XDR *xdrs)
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{
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return (xdrs->x_handy);
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}
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/* ARGSUSED */
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static bool_t
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x_setpostn(XDR *xdrs, u_int pos)
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{
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/* This is not allowed */
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return (FALSE);
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}
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static int32_t *
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x_inline(XDR *xdrs, u_int len)
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{
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if (len == 0) {
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return (NULL);
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}
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if (xdrs->x_op != XDR_ENCODE) {
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return (NULL);
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}
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if (len < (u_int)(uintptr_t)xdrs->x_base) {
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/* x_private was already allocated */
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xdrs->x_handy += len;
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return ((int32_t *) xdrs->x_private);
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} else {
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/* Free the earlier space and allocate new area */
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if (xdrs->x_private)
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free(xdrs->x_private);
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if ((xdrs->x_private = (caddr_t) malloc(len)) == NULL) {
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xdrs->x_base = 0;
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return (NULL);
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}
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xdrs->x_base = (caddr_t)(uintptr_t)len;
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xdrs->x_handy += len;
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return ((int32_t *) xdrs->x_private);
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}
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}
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static int
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harmless(void)
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{
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/* Always return FALSE/NULL, as the case may be */
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return (0);
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}
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static void
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x_destroy(XDR *xdrs)
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{
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xdrs->x_handy = 0;
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xdrs->x_base = 0;
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if (xdrs->x_private) {
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free(xdrs->x_private);
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xdrs->x_private = NULL;
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}
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return;
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}
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unsigned long
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xdr_sizeof(xdrproc_t func, void *data)
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{
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XDR x;
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struct xdr_ops ops;
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bool_t stat;
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/* to stop ANSI-C compiler from complaining */
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typedef bool_t (* dummyfunc1)(XDR *, long *);
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typedef bool_t (* dummyfunc2)(XDR *, caddr_t, u_int);
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ops.x_putlong = x_putlong;
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ops.x_putbytes = x_putbytes;
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ops.x_inline = x_inline;
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ops.x_getpostn = x_getpostn;
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ops.x_setpostn = x_setpostn;
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ops.x_destroy = x_destroy;
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/* the other harmless ones */
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ops.x_getlong = (dummyfunc1) harmless;
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ops.x_getbytes = (dummyfunc2) harmless;
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x.x_op = XDR_ENCODE;
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x.x_ops = &ops;
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x.x_handy = 0;
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x.x_private = (caddr_t) NULL;
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x.x_base = (caddr_t) 0;
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stat = func(&x, data);
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if (x.x_private)
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free(x.x_private);
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return (stat == TRUE ? (unsigned) x.x_handy: 0);
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}
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