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/*
* Copyright (C) 2010-2016 Junjiro R. Okajima
*/
/*
* dynamically customizable operations (for regular files only)
*/
#ifndef __AUFS_DYNOP_H__
#define __AUFS_DYNOP_H__
#ifdef __KERNEL__
#include <linux/fs.h>
#include <linux/kref.h>
enum {AuDy_AOP, AuDyLast};
struct au_dynop {
int dy_type;
union {
const void *dy_hop;
const struct address_space_operations *dy_haop;
};
};
struct au_dykey {
union {
struct hlist_node dk_hnode;
struct rcu_head dk_rcu;
};
struct au_dynop dk_op;
/*
* during I am in the branch local array, kref is gotten. when the
* branch is removed, kref is put.
*/
struct kref dk_kref;
};
/* stop unioning since their sizes are very different from each other */
struct au_dyaop {
struct au_dykey da_key;
struct address_space_operations da_op; /* not const */
};
/* ---------------------------------------------------------------------- */
/* dynop.c */
struct au_branch;
void au_dy_put(struct au_dykey *key);
int au_dy_iaop(struct inode *inode, aufs_bindex_t bindex,
struct inode *h_inode);
int au_dy_irefresh(struct inode *inode);
void au_dy_arefresh(int do_dio);
void __init au_dy_init(void);
void au_dy_fin(void);
#endif /* __KERNEL__ */
#endif /* __AUFS_DYNOP_H__ */
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