1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /****************************************************************************** 3*4882a593Smuzhiyun ******************************************************************************* 4*4882a593Smuzhiyun ** 5*4882a593Smuzhiyun ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 6*4882a593Smuzhiyun ** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. 7*4882a593Smuzhiyun ** 8*4882a593Smuzhiyun ** This copyrighted material is made available to anyone wishing to use, 9*4882a593Smuzhiyun ** modify, copy, or redistribute it subject to the terms and conditions 10*4882a593Smuzhiyun ** of the GNU General Public License v.2. 11*4882a593Smuzhiyun ** 12*4882a593Smuzhiyun ******************************************************************************* 13*4882a593Smuzhiyun ******************************************************************************/ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun #ifndef _LINUX_DLM_DEVICE_H 16*4882a593Smuzhiyun #define _LINUX_DLM_DEVICE_H 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun /* This is the device interface for dlm, most users will use a library 19*4882a593Smuzhiyun * interface. 20*4882a593Smuzhiyun */ 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #include <linux/dlm.h> 23*4882a593Smuzhiyun #include <linux/types.h> 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #define DLM_USER_LVB_LEN 32 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /* Version of the device interface */ 28*4882a593Smuzhiyun #define DLM_DEVICE_VERSION_MAJOR 6 29*4882a593Smuzhiyun #define DLM_DEVICE_VERSION_MINOR 0 30*4882a593Smuzhiyun #define DLM_DEVICE_VERSION_PATCH 2 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun /* struct passed to the lock write */ 33*4882a593Smuzhiyun struct dlm_lock_params { 34*4882a593Smuzhiyun __u8 mode; 35*4882a593Smuzhiyun __u8 namelen; 36*4882a593Smuzhiyun __u16 unused; 37*4882a593Smuzhiyun __u32 flags; 38*4882a593Smuzhiyun __u32 lkid; 39*4882a593Smuzhiyun __u32 parent; 40*4882a593Smuzhiyun __u64 xid; 41*4882a593Smuzhiyun __u64 timeout; 42*4882a593Smuzhiyun void __user *castparam; 43*4882a593Smuzhiyun void __user *castaddr; 44*4882a593Smuzhiyun void __user *bastparam; 45*4882a593Smuzhiyun void __user *bastaddr; 46*4882a593Smuzhiyun struct dlm_lksb __user *lksb; 47*4882a593Smuzhiyun char lvb[DLM_USER_LVB_LEN]; 48*4882a593Smuzhiyun char name[0]; 49*4882a593Smuzhiyun }; 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun struct dlm_lspace_params { 52*4882a593Smuzhiyun __u32 flags; 53*4882a593Smuzhiyun __u32 minor; 54*4882a593Smuzhiyun char name[0]; 55*4882a593Smuzhiyun }; 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun struct dlm_purge_params { 58*4882a593Smuzhiyun __u32 nodeid; 59*4882a593Smuzhiyun __u32 pid; 60*4882a593Smuzhiyun }; 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun struct dlm_write_request { 63*4882a593Smuzhiyun __u32 version[3]; 64*4882a593Smuzhiyun __u8 cmd; 65*4882a593Smuzhiyun __u8 is64bit; 66*4882a593Smuzhiyun __u8 unused[2]; 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun union { 69*4882a593Smuzhiyun struct dlm_lock_params lock; 70*4882a593Smuzhiyun struct dlm_lspace_params lspace; 71*4882a593Smuzhiyun struct dlm_purge_params purge; 72*4882a593Smuzhiyun } i; 73*4882a593Smuzhiyun }; 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun struct dlm_device_version { 76*4882a593Smuzhiyun __u32 version[3]; 77*4882a593Smuzhiyun }; 78*4882a593Smuzhiyun 79*4882a593Smuzhiyun /* struct read from the "device" fd, 80*4882a593Smuzhiyun consists mainly of userspace pointers for the library to use */ 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun struct dlm_lock_result { 83*4882a593Smuzhiyun __u32 version[3]; 84*4882a593Smuzhiyun __u32 length; 85*4882a593Smuzhiyun void __user * user_astaddr; 86*4882a593Smuzhiyun void __user * user_astparam; 87*4882a593Smuzhiyun struct dlm_lksb __user * user_lksb; 88*4882a593Smuzhiyun struct dlm_lksb lksb; 89*4882a593Smuzhiyun __u8 bast_mode; 90*4882a593Smuzhiyun __u8 unused[3]; 91*4882a593Smuzhiyun /* Offsets may be zero if no data is present */ 92*4882a593Smuzhiyun __u32 lvb_offset; 93*4882a593Smuzhiyun }; 94*4882a593Smuzhiyun 95*4882a593Smuzhiyun /* Commands passed to the device */ 96*4882a593Smuzhiyun #define DLM_USER_LOCK 1 97*4882a593Smuzhiyun #define DLM_USER_UNLOCK 2 98*4882a593Smuzhiyun #define DLM_USER_QUERY 3 99*4882a593Smuzhiyun #define DLM_USER_CREATE_LOCKSPACE 4 100*4882a593Smuzhiyun #define DLM_USER_REMOVE_LOCKSPACE 5 101*4882a593Smuzhiyun #define DLM_USER_PURGE 6 102*4882a593Smuzhiyun #define DLM_USER_DEADLOCK 7 103*4882a593Smuzhiyun 104*4882a593Smuzhiyun /* Lockspace flags */ 105*4882a593Smuzhiyun #define DLM_USER_LSFLG_AUTOFREE 1 106*4882a593Smuzhiyun #define DLM_USER_LSFLG_FORCEFREE 2 107*4882a593Smuzhiyun 108*4882a593Smuzhiyun #endif 109*4882a593Smuzhiyun 110