UBUNTU: Ubuntu-5.15.0-39.42

[mirror_ubuntu-jammy-kernel.git] / fs / 9p / fid.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * V9FS FID Management
 *
 *  Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com>
 */
#ifndef FS_9P_FID_H
#define FS_9P_FID_H
#include <linux/list.h>

struct p9_fid *v9fs_fid_lookup(struct dentry *dentry);
static inline struct p9_fid *v9fs_parent_fid(struct dentry *dentry)
{
	return v9fs_fid_lookup(dentry->d_parent);
}
void v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid);
struct p9_fid *v9fs_writeback_fid(struct dentry *dentry);
void v9fs_open_fid_add(struct inode *inode, struct p9_fid *fid);
static inline struct p9_fid *clone_fid(struct p9_fid *fid)
{
	return IS_ERR(fid) ? fid :  p9_client_walk(fid, 0, NULL, 1);
}
static inline struct p9_fid *v9fs_fid_clone(struct dentry *dentry)
{
	struct p9_fid *fid, *nfid;

	fid = v9fs_fid_lookup(dentry);
	if (!fid || IS_ERR(fid))
		return fid;

	nfid = clone_fid(fid);
	p9_client_clunk(fid);
	return nfid;
}
#endif