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acf9d61421
functions so we can funnel through some well known functions. Should help greatly with
malloc checking.
HEAD patch to follow.
Jeremy.
(This used to be commit 620f2e608f)
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
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Unix SMB/CIFS implementation.
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Easy management of byte-length data
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Copyright (C) Andrew Tridgell 2001
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Copyright (C) Andrew Bartlett 2001
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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/*******************************************************************
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free() a data blob
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*******************************************************************/
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static void free_data_blob(DATA_BLOB *d)
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{
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if ((d) && (d->free)) {
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SAFE_FREE(d->data);
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}
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}
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/*******************************************************************
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construct a data blob, must be freed with data_blob_free()
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you can pass NULL for p and get a blank data blob
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*******************************************************************/
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DATA_BLOB data_blob(const void *p, size_t length)
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{
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DATA_BLOB ret;
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if (!length) {
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ZERO_STRUCT(ret);
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return ret;
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}
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if (p) {
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ret.data = smb_xmemdup(p, length);
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} else {
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ret.data = SMB_XMALLOC_ARRAY(char, length);
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}
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ret.length = length;
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ret.free = free_data_blob;
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return ret;
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}
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/*******************************************************************
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construct a data blob, using supplied TALLOC_CTX
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*******************************************************************/
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DATA_BLOB data_blob_talloc(TALLOC_CTX *mem_ctx, const void *p, size_t length)
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{
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DATA_BLOB ret;
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if (!length) {
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ZERO_STRUCT(ret);
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return ret;
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}
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if (p) {
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ret.data = TALLOC_MEMDUP(mem_ctx, p, length);
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if (ret.data == NULL)
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smb_panic("data_blob_talloc: talloc_memdup failed.\n");
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} else {
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ret.data = TALLOC(mem_ctx, length);
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if (ret.data == NULL)
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smb_panic("data_blob_talloc: talloc failed.\n");
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}
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ret.length = length;
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ret.free = NULL;
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return ret;
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}
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/*******************************************************************
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free a data blob
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*******************************************************************/
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void data_blob_free(DATA_BLOB *d)
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{
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if (d) {
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if (d->free) {
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(d->free)(d);
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}
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d->length = 0;
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}
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}
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/*******************************************************************
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clear a DATA_BLOB's contents
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*******************************************************************/
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static void data_blob_clear(DATA_BLOB *d)
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{
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if (d->data) {
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memset(d->data, 0, d->length);
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}
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}
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/*******************************************************************
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free a data blob and clear its contents
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*******************************************************************/
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void data_blob_clear_free(DATA_BLOB *d)
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{
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data_blob_clear(d);
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data_blob_free(d);
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}
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