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/**
* @file
* Defines the public interface for searching and iterating over fs_use statements.
*
* @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_FS_USE_QUERY_H
#define QPOL_FS_USE_QUERY_H
#ifdef __cplusplus
extern "C"
{
#endif
#include <stddef.h>
#include <stdint.h>
#include <qpol/iterator.h>
#include <qpol/policy.h>
#include <qpol/context_query.h>
typedef struct qpol_fs_use qpol_fs_use_t;
/**
* Get a fs_use statement by file system name.
* @param policy The policy from which to get the fs_use statement.
* @param name The name of the file system.
* @param ocon Pointer in which to store the fs_use statement.
* The caller should not free this pointer.
* @return 0 on success and < 0 on failure; if the call fails,
* errno will be set and *ocon will be NULL.
*/
extern int qpol_policy_get_fs_use_by_name(const qpol_policy_t * policy, const char *name, const qpol_fs_use_t ** ocon);
/**
* Get an iterator for the fs_use statements in a policy.
* @param policy The policy from which to create the iterator.
* @param iter Iterator over items of type qpol_fs_use_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 unmodified.
* @return 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_fs_use_iter(const qpol_policy_t * policy, qpol_iterator_t ** iter);
/**
* Get the file system name from a fs_use statement.
* @param policy The policy associated with the fs_use statement.
* @param ocon The fs_use statement from which to get the name.
* @param name Pointer to the string in which to store the name.
* The caller should not free this string.
* @return 0 on success and < 0 on failure; if the call fails,
* errno will be set and *name will be NULL.
*/
extern int qpol_fs_use_get_name(const qpol_policy_t * policy, const qpol_fs_use_t * ocon, const char **name);
/* The defines QPOL_FS_USE_XATTR through QPOL_FS_USE_NONE are
* copied from sepol/policydb/services.h.
* QPOL_FS_USE_PSID is an extension to support v12 policies. */
#define QPOL_FS_USE_XATTR 1U
#define QPOL_FS_USE_TRANS 2U
#define QPOL_FS_USE_TASK 3U
#define QPOL_FS_USE_GENFS 4U
#define QPOL_FS_USE_NONE 5U
#define QPOL_FS_USE_PSID 6U
/**
* Get the labeling behavior from a fs_use statement.
* @param policy The policy associated with the fs_use statement.
* @param ocon The fs_use statement from which to get the behavior.
* @param behavior Pointer to be set to the value of the labeling behavior.
* The value will be one of the QPOL_FS_USE_* values defined above.
* @return 0 on success and < 0 on failure; if the call fails,
* errno will be set and *behavior will be 0.
*/
extern int qpol_fs_use_get_behavior(const qpol_policy_t * policy, const qpol_fs_use_t * ocon, uint32_t * behavior);
/**
* Get the context from a fs_use statement.
* @param policy The policy associated with the fs_use statement.
* @param ocon The fs_use statement from which to get the context.
* @param context Pointer in which to store the context.
* The caller should not free this pointer.
* @return 0 on success and < 0 on failure; if the call fails,
* errno will be set and *context will be NULL. It is considered an
* error to call this function if behavior is QPOL_FS_USE_PSID.
*/
extern int qpol_fs_use_get_context(const qpol_policy_t * policy, const qpol_fs_use_t * ocon,
const qpol_context_t ** context);
#ifdef __cplusplus
}
#endif
#endif /* QPOL_FS_USE_QUERY_H */
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