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/*
* Copyright (c) 2019 Andreas Schneider <asn@samba.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _TALLOC_KEEP_SECRET_H
#define _TALLOC_KEEP_SECRET_H
#ifdef DOXYGEN
/**
* @brief Keep the memory secret when freeing.
*
* This can be used to define memory as secret. For example memory which holds
* passwords or other secrets like session keys. The memory will be zeroed
* before is being freed.
*
* If you duplicate memory, e.g. using talloc_strdup() or talloc_asprintf() you
* need to call talloc_keep_secret() on the newly allocated memory too!
*
* @param[in] ptr The talloc chunk to mark as secure.
*
* @warning Do not use this in combination with talloc_realloc().
*/
void talloc_keep_secret(const void *ptr);
#else
#define talloc_keep_secret(ptr) _talloc_keep_secret(ptr, #ptr);
void _talloc_keep_secret(void *ptr, const char *name);
#endif
#endif /* _TALLOC_KEEP_SECRET_H */
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