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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note *//***************************************************************************************************************************************************************** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.** Copyright (C) 2004-2011 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 _UAPI__DLM_DOT_H__#define _UAPI__DLM_DOT_H__
/* * Interface to Distributed Lock Manager (DLM) * routines and structures to use DLM lockspaces */
/* Lock levels and flags are here */#include <linux/dlmconstants.h>#include <linux/types.h>
typedef void dlm_lockspace_t;
/* * Lock status block * * Use this structure to specify the contents of the lock value block. For a * conversion request, this structure is used to specify the lock ID of the * lock. DLM writes the status of the lock request and the lock ID assigned * to the request in the lock status block. * * sb_lkid: the returned lock ID. It is set on new (non-conversion) requests. * It is available when dlm_lock returns. * * sb_lvbptr: saves or returns the contents of the lock's LVB according to rules * shown for the DLM_LKF_VALBLK flag. * * sb_flags: DLM_SBF_DEMOTED is returned if in the process of promoting a lock, * it was first demoted to NL to avoid conversion deadlock. * DLM_SBF_VALNOTVALID is returned if the resource's LVB is marked invalid. * * sb_status: the returned status of the lock request set prior to AST * execution. Possible return values: * * 0 if lock request was successful * -EAGAIN if request would block and is flagged DLM_LKF_NOQUEUE * -DLM_EUNLOCK if unlock request was successful * -DLM_ECANCEL if a cancel completed successfully * -EDEADLK if a deadlock was detected * -ETIMEDOUT if the lock request was canceled due to a timeout */
#define DLM_SBF_DEMOTED 0x01#define DLM_SBF_VALNOTVALID 0x02#define DLM_SBF_ALTMODE 0x04
struct dlm_lksb { int sb_status; __u32 sb_lkid; char sb_flags; char * sb_lvbptr;};
/* dlm_new_lockspace() flags */
/* DLM_LSFL_TIMEWARN is deprecated and reserved. DO NOT USE! */#define DLM_LSFL_TIMEWARN 0x00000002#define DLM_LSFL_NEWEXCL 0x00000008/* currently reserved due in-kernel use */#define __DLM_LSFL_RESERVED0 0x00000010
#endif /* _UAPI__DLM_DOT_H__ */