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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
*/
#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#include <qpol/iterator.h>
#include <qpol/policy.h>
#include <qpol/fs_use_query.h>
#include <qpol/context_query.h>
#include <sepol/policydb/policydb.h>
#include <sepol/policydb/context.h>
#include "qpol_internal.h"
#include "iterator_internal.h"
int qpol_policy_get_fs_use_by_name(const qpol_policy_t * policy, const char *name, const qpol_fs_use_t ** ocon)
{
ocontext_t *tmp = NULL;
policydb_t *db = NULL;
if (ocon != NULL)
*ocon = NULL;
if (policy == NULL || name == NULL || ocon == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
db = &policy->p->p;
for (tmp = db->ocontexts[OCON_FSUSE]; tmp; tmp = tmp->next) {
if (!strcmp(name, tmp->u.name))
break;
}
*ocon = (qpol_fs_use_t *) tmp;
if (*ocon == NULL) {
ERR(policy, "could not find fs_use statement for %s", name);
errno = ENOENT;
return STATUS_ERR;
}
return STATUS_SUCCESS;
}
int qpol_policy_get_fs_use_iter(const qpol_policy_t * policy, qpol_iterator_t ** iter)
{
policydb_t *db = NULL;
int error = 0;
ocon_state_t *os = NULL;
if (iter != NULL)
*iter = NULL;
if (policy == NULL || iter == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
db = &policy->p->p;
os = calloc(1, sizeof(ocon_state_t));
if (os == NULL) {
error = errno;
ERR(policy, "%s", strerror(ENOMEM));
errno = error;
return STATUS_ERR;
}
os->head = os->cur = db->ocontexts[OCON_FSUSE];
if (qpol_iterator_create(policy, (void *)os, ocon_state_get_cur,
ocon_state_next, ocon_state_end, ocon_state_size, free, iter)) {
free(os);
return STATUS_ERR;
}
return STATUS_SUCCESS;
}
int qpol_fs_use_get_name(const qpol_policy_t * policy, const qpol_fs_use_t * ocon, const char **name)
{
ocontext_t *internal_ocon = NULL;
if (name != NULL)
*name = NULL;
if (policy == NULL || ocon == NULL || name == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
internal_ocon = (ocontext_t *) ocon;
*name = internal_ocon->u.name;
return STATUS_SUCCESS;
}
int qpol_fs_use_get_behavior(const qpol_policy_t * policy, const qpol_fs_use_t * ocon, uint32_t * behavior)
{
ocontext_t *internal_ocon = NULL;
if (behavior != NULL)
*behavior = 0;
if (policy == NULL || ocon == NULL || behavior == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
internal_ocon = (ocontext_t *) ocon;
*behavior = internal_ocon->v.behavior;
return STATUS_SUCCESS;
}
int qpol_fs_use_get_context(const qpol_policy_t * policy, const qpol_fs_use_t * ocon, const qpol_context_t ** context)
{
ocontext_t *internal_ocon = NULL;
if (context != NULL)
*context = NULL;
if (policy == NULL || ocon == NULL || context == NULL) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
internal_ocon = (ocontext_t *) ocon;
if (internal_ocon->v.behavior == QPOL_FS_USE_PSID) {
ERR(policy, "%s", strerror(EINVAL));
errno = EINVAL;
return STATUS_ERR;
}
*context = (qpol_context_t *) & (internal_ocon->context[0]);
return STATUS_SUCCESS;
}
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