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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2005-2019 Junjiro R. Okajima
*
* This program, aufs 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 2 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/>.
*/
/*
* support for loopback mount as a branch
*/
#ifndef __AUFS_LOOP_H__
#define __AUFS_LOOP_H__
#ifdef __KERNEL__
struct dentry;
struct super_block;
#ifdef CONFIG_AUFS_BDEV_LOOP
/* drivers/block/loop.c */
struct file *loop_backing_file(struct super_block *sb);
/* loop.c */
int au_test_loopback_overlap(struct super_block *sb, struct dentry *h_adding);
int au_test_loopback_kthread(void);
void au_warn_loopback(struct super_block *h_sb);
int au_loopback_init(void);
void au_loopback_fin(void);
#else
AuStubInt0(au_test_loopback_overlap, struct super_block *sb,
struct dentry *h_adding)
AuStubInt0(au_test_loopback_kthread, void)
AuStubVoid(au_warn_loopback, struct super_block *h_sb)
AuStubInt0(au_loopback_init, void)
AuStubVoid(au_loopback_fin, void)
#endif /* BLK_DEV_LOOP */
#endif /* __KERNEL__ */
#endif /* __AUFS_LOOP_H__ */
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