1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* -*- mode: c; c-basic-offset: 8; -*-
3 * vim: noexpandtab sw=8 ts=8 sts=0:
7 * Userspace dlm defines
9 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
16 #include <linux/module.h>
18 #include <linux/types.h>
19 #include <linux/workqueue.h>
21 /* user_lock_res->l_flags flags. */
22 #define USER_LOCK_ATTACHED (0x00000001) /* we have initialized
24 #define USER_LOCK_BUSY (0x00000002) /* we are currently in
26 #define USER_LOCK_BLOCKED (0x00000004) /* blocked waiting to
28 #define USER_LOCK_IN_TEARDOWN (0x00000008) /* we're currently
31 #define USER_LOCK_QUEUED (0x00000010) /* lock is on the
33 #define USER_LOCK_IN_CANCEL (0x00000020)
35 struct user_lock_res {
40 #define USER_DLM_LOCK_ID_MAX_LEN 32
41 char l_name[USER_DLM_LOCK_ID_MAX_LEN];
44 unsigned int l_ro_holders;
45 unsigned int l_ex_holders;
46 struct ocfs2_dlm_lksb l_lksb;
51 wait_queue_head_t l_event;
53 struct work_struct l_work;
56 extern struct workqueue_struct *user_dlm_worker;
58 void user_dlm_lock_res_init(struct user_lock_res *lockres,
59 struct dentry *dentry);
60 int user_dlm_destroy_lock(struct user_lock_res *lockres);
61 int user_dlm_cluster_lock(struct user_lock_res *lockres,
64 void user_dlm_cluster_unlock(struct user_lock_res *lockres,
66 void user_dlm_write_lvb(struct inode *inode,
69 bool user_dlm_read_lvb(struct inode *inode, char *val);
70 struct ocfs2_cluster_connection *user_dlm_register(const struct qstr *name);
71 void user_dlm_unregister(struct ocfs2_cluster_connection *conn);
72 void user_dlm_set_locking_protocol(void);
74 struct dlmfs_inode_private {
75 struct ocfs2_cluster_connection *ip_conn;
77 struct user_lock_res ip_lockres; /* unused for directories. */
78 struct inode *ip_parent;
80 struct inode ip_vfs_inode;
83 static inline struct dlmfs_inode_private *
84 DLMFS_I(struct inode *inode)
86 return container_of(inode,
87 struct dlmfs_inode_private,
91 struct dlmfs_filp_private {
95 #define DLMFS_MAGIC 0x76a9f425
97 #endif /* USERDLM_H */