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- /******************************************************************************
- *******************************************************************************
- **
- ** 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 __DLM_DOT_H__
- #define __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
- * -ENOMEM if there is no memory to process request
- * -EINVAL if there are invalid parameters
- * -DLM_EUNLOCK if unlock request was successful
- * -DLM_ECANCEL if a cancel completed successfully
- */
-
- #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;
- };
-
- #define DLM_LSFL_NODIR 0x00000001
- #define DLM_LSFL_TIMEWARN 0x00000002
- #define DLM_LSFL_FS 0x00000004
-
-
- #endif /* __DLM_DOT_H__ */
-
-