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939c3cb5d7
* \PIPE\unixinfo
* winbindd's {group,alias}membership new functions
* winbindd's lookupsids() functionality
* swat (trunk changes to be reverted as per discussion with Deryck)
121 lines
3.1 KiB
C
121 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(unsigned 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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