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author | David Howells <dhowells@redhat.com> | 2012-10-13 10:46:48 +0100 |
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committer | David Howells <dhowells@redhat.com> | 2012-10-13 10:46:48 +0100 |
commit | 607ca46e97a1b6594b29647d98a32d545c24bdff (patch) | |
tree | 30f4c0784bfddb57332cdc0678bd06d1e77fa185 /include/uapi/linux/dlm.h | |
parent | 08cce05c5a91f5017f4edc9866cf026908c73f9f (diff) | |
download | linux-607ca46e97a1b6594b29647d98a32d545c24bdff.tar.gz linux-607ca46e97a1b6594b29647d98a32d545c24bdff.tar.bz2 linux-607ca46e97a1b6594b29647d98a32d545c24bdff.zip |
UAPI: (Scripted) Disintegrate include/linux
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'include/uapi/linux/dlm.h')
-rw-r--r-- | include/uapi/linux/dlm.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/include/uapi/linux/dlm.h b/include/uapi/linux/dlm.h new file mode 100644 index 000000000000..1f73cc06168f --- /dev/null +++ b/include/uapi/linux/dlm.h @@ -0,0 +1,75 @@ +/****************************************************************************** +******************************************************************************* +** +** 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 */ + +#define DLM_LSFL_TIMEWARN 0x00000002 +#define DLM_LSFL_FS 0x00000004 +#define DLM_LSFL_NEWEXCL 0x00000008 + + +#endif /* _UAPI__DLM_DOT_H__ */ |