| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| /****************************************************************************** |
| ******************************************************************************* |
| ** |
| ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| ** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
| ** |
| ** This copyrighted material is made available to anyone wishing to use, |
| ** modify, copy, or redistribute it subject to the terms and conditions |
| ** of the GNU General Public License v.2. |
| ** |
| ******************************************************************************* |
| ******************************************************************************/ |
| |
| #ifndef _LINUX_DLM_DEVICE_H |
| #define _LINUX_DLM_DEVICE_H |
| |
| /* This is the device interface for dlm, most users will use a library |
| * interface. |
| */ |
| |
| #include <linux/dlm.h> |
| #include <linux/types.h> |
| |
| #define DLM_USER_LVB_LEN 32 |
| |
| /* Version of the device interface */ |
| #define DLM_DEVICE_VERSION_MAJOR 6 |
| #define DLM_DEVICE_VERSION_MINOR 0 |
| #define DLM_DEVICE_VERSION_PATCH 2 |
| |
| /* struct passed to the lock write */ |
| struct dlm_lock_params { |
| __u8 mode; |
| __u8 namelen; |
| __u16 unused; |
| __u32 flags; |
| __u32 lkid; |
| __u32 parent; |
| __u64 xid; |
| __u64 timeout; |
| void __user *castparam; |
| void __user *castaddr; |
| void __user *bastparam; |
| void __user *bastaddr; |
| struct dlm_lksb __user *lksb; |
| char lvb[DLM_USER_LVB_LEN]; |
| char name[]; |
| }; |
| |
| struct dlm_lspace_params { |
| __u32 flags; |
| __u32 minor; |
| char name[]; |
| }; |
| |
| struct dlm_purge_params { |
| __u32 nodeid; |
| __u32 pid; |
| }; |
| |
| struct dlm_write_request { |
| __u32 version[3]; |
| __u8 cmd; |
| __u8 is64bit; |
| __u8 unused[2]; |
| |
| union { |
| struct dlm_lock_params lock; |
| struct dlm_lspace_params lspace; |
| struct dlm_purge_params purge; |
| } i; |
| }; |
| |
| struct dlm_device_version { |
| __u32 version[3]; |
| }; |
| |
| /* struct read from the "device" fd, |
| consists mainly of userspace pointers for the library to use */ |
| |
| struct dlm_lock_result { |
| __u32 version[3]; |
| __u32 length; |
| void __user * user_astaddr; |
| void __user * user_astparam; |
| struct dlm_lksb __user * user_lksb; |
| struct dlm_lksb lksb; |
| __u8 bast_mode; |
| __u8 unused[3]; |
| /* Offsets may be zero if no data is present */ |
| __u32 lvb_offset; |
| }; |
| |
| /* Commands passed to the device */ |
| #define DLM_USER_LOCK 1 |
| #define DLM_USER_UNLOCK 2 |
| #define DLM_USER_QUERY 3 |
| #define DLM_USER_CREATE_LOCKSPACE 4 |
| #define DLM_USER_REMOVE_LOCKSPACE 5 |
| #define DLM_USER_PURGE 6 |
| #define DLM_USER_DEADLOCK 7 |
| |
| /* Lockspace flags */ |
| #define DLM_USER_LSFLG_AUTOFREE 1 |
| #define DLM_USER_LSFLG_FORCEFREE 2 |
| |
| #endif |
| |