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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/******************************************************************************
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*******************************************************************************
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**
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** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
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**
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** This copyrighted material is made available to anyone wishing to use,
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** modify, copy, or redistribute it subject to the terms and conditions
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** of the GNU General Public License v.2.
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**
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*******************************************************************************
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******************************************************************************/
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#ifndef _UAPI__DLM_DOT_H__
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#define _UAPI__DLM_DOT_H__
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/*
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* Interface to Distributed Lock Manager (DLM)
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* routines and structures to use DLM lockspaces
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*/
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/* Lock levels and flags are here */
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#include <linux/dlmconstants.h>
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#include <linux/types.h>
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typedef void dlm_lockspace_t;
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/*
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* Lock status block
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*
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* Use this structure to specify the contents of the lock value block. For a
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* conversion request, this structure is used to specify the lock ID of the
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* lock. DLM writes the status of the lock request and the lock ID assigned
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* to the request in the lock status block.
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*
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* sb_lkid: the returned lock ID. It is set on new (non-conversion) requests.
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* It is available when dlm_lock returns.
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*
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* sb_lvbptr: saves or returns the contents of the lock's LVB according to rules
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* shown for the DLM_LKF_VALBLK flag.
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*
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* sb_flags: DLM_SBF_DEMOTED is returned if in the process of promoting a lock,
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* it was first demoted to NL to avoid conversion deadlock.
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* DLM_SBF_VALNOTVALID is returned if the resource's LVB is marked invalid.
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*
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* sb_status: the returned status of the lock request set prior to AST
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* execution. Possible return values:
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*
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* 0 if lock request was successful
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* -EAGAIN if request would block and is flagged DLM_LKF_NOQUEUE
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* -DLM_EUNLOCK if unlock request was successful
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* -DLM_ECANCEL if a cancel completed successfully
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* -EDEADLK if a deadlock was detected
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* -ETIMEDOUT if the lock request was canceled due to a timeout
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*/
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#define DLM_SBF_DEMOTED 0x01
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#define DLM_SBF_VALNOTVALID 0x02
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#define DLM_SBF_ALTMODE 0x04
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struct dlm_lksb {
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int sb_status;
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__u32 sb_lkid;
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char sb_flags;
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char * sb_lvbptr;
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};
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/* dlm_new_lockspace() flags */
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#define DLM_LSFL_TIMEWARN 0x00000002
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#define DLM_LSFL_FS 0x00000004
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#define DLM_LSFL_NEWEXCL 0x00000008
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#endif /* _UAPI__DLM_DOT_H__ */
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