linux/fs/cachefiles/security.c

// SPDX-License-Identifier: GPL-2.0-or-later
/* CacheFiles security management
 *
 * Copyright (C) 2007, 2021 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells ([email protected])
 */

#include <linux/fs.h>
#include <linux/cred.h>
#include "internal.h"

/*
 * determine the security context within which we access the cache from within
 * the kernel
 */
int cachefiles_get_security_ID(struct cachefiles_cache *cache)
{ … }

/*
 * see if mkdir and create can be performed in the root directory
 */
static int cachefiles_check_cache_dir(struct cachefiles_cache *cache,
				      struct dentry *root)
{ … }

/*
 * check the security details of the on-disk cache
 * - must be called with security override in force
 * - must return with a security override in force - even in the case of an
 *   error
 */
int cachefiles_determine_cache_security(struct cachefiles_cache *cache,
					struct dentry *root,
					const struct cred **_saved_cred)
{ … }