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/**
* @file
* Defines the public interface for searching and iterating over
* range transition rules.
*
* @author Kevin Carr kcarr@tresys.com
* @author Jeremy A. Mowery jmowery@tresys.com
* @author Jason Tang jtang@tresys.com
*
* Copyright (C) 2006-2007 Tresys Technology, LLC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef QPOL_MLSRULE_QUERY_H
#define QPOL_MLSRULE_QUERY_H
#ifdef __cplusplus
extern "C"
{
#endif
#include <qpol/policy.h>
typedef struct qpol_range_trans qpol_range_trans_t;
/**
* Get an iterator over all range transition rules in a policy.
* @param policy Policy from which to get the range transitions.
* @param iter Iterator over items of type qpol_range_trans_t returned.
* The caller is responsible for calling qpol_iterator_destroy()
* to free memory used by this iterator.
* It is important to note that this iterator is only valid as long as
* the policy is unmodifed.
* @returm 0 on success and < 0 on failure; if the call fails,
* errno will be set and *iter will be NULL.
*/
extern int qpol_policy_get_range_trans_iter(const qpol_policy_t * policy, qpol_iterator_t ** iter);
/**
* Get the source type from a range transition rule.
* @param policy Policy from which the rule comes.
* @param rule The rule from which to get the source type.
* @param source Pointer in which to store the source type.
* The caller should not free this pointer.
* @returm 0 on success and < 0 on failure; if the call fails,
* errno will be set and *source will be NULL.
*/
extern int qpol_range_trans_get_source_type(const qpol_policy_t * policy, const qpol_range_trans_t * rule,
const qpol_type_t ** source);
/**
* Get the target type from a range transition rule.
* @param policy Policy from which the rule comes.
* @param rule The rule from which to get the target type.
* @param target Pointer in which to store the target type.
* The caller should not free this pointer.
* @returm 0 on success and < 0 on failure; if the call fails,
* errno will be set and *target will be NULL.
*/
extern int qpol_range_trans_get_target_type(const qpol_policy_t * policy, const qpol_range_trans_t * rule,
const qpol_type_t ** target);
/**
* Get the target class from a range transition rule.
* @param policy Policy from which the rule comes.
* @param rule The rule from which to get the target class.
* @param target Pointer in which to store the target class.
* The caller should not free this pointer.
* @returm 0 on success and < 0 on failure; if the call fails,
* errno will be set and *target will be NULL.
*/
extern int qpol_range_trans_get_target_class(const qpol_policy_t * policy, const qpol_range_trans_t * rule,
const qpol_class_t ** target);
/**
* Get the range from a range transition rule.
* @param policy Policy from which the rule comes.
* @param rule The rule from which to get the range.
* @param range Pointer in which to store the range.
* The caller should not free this pointer.
* @returm 0 on success and < 0 on failure; if the call fails,
* errno will be set and *range will be NULL.
*/
extern int qpol_range_trans_get_range(const qpol_policy_t * policy, const qpol_range_trans_t * rule,
const qpol_mls_range_t ** range);
#ifdef __cplusplus
}
#endif
#endif /* QPOL_MLSRULE_QUERY_H */
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