linux/fs/ocfs2/dlmfs/userdlm.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * userdlm.h
 *
 * Userspace dlm defines
 *
 * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
 */


#ifndef USERDLM_H
#define USERDLM_H

#include <linux/module.h>
#include <linux/fs.h>
#include <linux/types.h>
#include <linux/workqueue.h>

/* user_lock_res->l_flags flags. */
#define USER_LOCK_ATTACHED …
#define USER_LOCK_BUSY …
#define USER_LOCK_BLOCKED …
#define USER_LOCK_IN_TEARDOWN …
#define USER_LOCK_QUEUED …
#define USER_LOCK_IN_CANCEL …

struct user_lock_res { … };

extern struct workqueue_struct *user_dlm_worker;

void user_dlm_lock_res_init(struct user_lock_res *lockres,
			    struct dentry *dentry);
int user_dlm_destroy_lock(struct user_lock_res *lockres);
int user_dlm_cluster_lock(struct user_lock_res *lockres,
			  int level,
			  int lkm_flags);
void user_dlm_cluster_unlock(struct user_lock_res *lockres,
			     int level);
void user_dlm_write_lvb(struct inode *inode,
			const char *val,
			unsigned int len);
bool user_dlm_read_lvb(struct inode *inode, char *val);
struct ocfs2_cluster_connection *user_dlm_register(const struct qstr *name);
void user_dlm_unregister(struct ocfs2_cluster_connection *conn);
void user_dlm_set_locking_protocol(void);

struct dlmfs_inode_private { … };

static inline struct dlmfs_inode_private *
DLMFS_I(struct inode *inode)
{ … }

struct dlmfs_filp_private { … };

#define DLMFS_MAGIC …

#endif /* USERDLM_H */