95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
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#ifndef _DLM_H
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#define _DLM_H
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#define DLM_VERSION 1
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#define DLM_VBLK_SZ 32
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typedef HANDLE dlm_lockid_t;
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typedef UCHAR dlm_nodeid_t;
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typedef CHAR dlm_mode_t;
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typedef HANDLE dlm_lockval_t;
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typedef HANDLE dlm_cevent_t;
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typedef HANDLE dlm_bevent_t;
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typedef char dlm_vblk[DLM_VBLK_SZ];
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typedef dlm_vblk *dlm_vblk_t;
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typedef enum {
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DLM_MODE_INVAL = -1,
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DLM_MODE_NL = 0,
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DLM_MODE_CR = 1,
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DLM_MODE_CW = 2,
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DLM_MODE_PR = 3,
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DLM_MODE_PW = 4,
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DLM_MODE_EX = 5
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}dlm_mode_type_t;
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#define DLM_ERROR_SUCCESS 0
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#define DLM_ERROR_GRANTED 0
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#define DLM_ERROR_QUEUED 1
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#define DLM_ERROR_CANCELED 2
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#define DLM_ERROR_BADID 11
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#define DLM_ERROR_NOMEM 12
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#define DLM_ERROR_BADMODE 13
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#define DLM_ERROR_NOOP 15
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#define DLM_ERROR_WOULDBLOCK 16
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#define DLM_ERROR_INVAL 17
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#define DLM_ERROR_INVALOP 18
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#define DLM_ERROR_LOCKWAIT 19
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#define DLM_ERROR_BUSY 20
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#define DLM_ERROR_NOTOWNER 21
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// List of DLM supported Flags
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#define DLM_FLAGS_FASTLOCK 0x0001 // issue convert without fairness
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#define DLM_FLAGS_TRYLOCK 0x0002 // if can't get it, don't bother
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#define DLM_FLAGS_ASYNC 0x0004 // don't block
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#define DLM_FLAGS_EVBLOCK 0x0008 // register callback/event on this lock
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#define DLM_FLAGS_VBIO 0x0010 // rw value block
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#define DLM_FLAGS_VBIV 0x0020 // invalidate value block
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// *** from WDM.H (apps can't be expected to have this defined) ***
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typedef ULONG NTSTATUS;
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typedef struct _IO_STATUS_BLOCK {
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union {
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NTSTATUS Status;
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PVOID Pointer;
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};
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ULONG_PTR Information;
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} IO_STATUS_BLOCK, *PIO_STATUS_BLOCK;
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typedef
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VOID
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(NTAPI *PIO_APC_ROUTINE) (
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IN PVOID ApcContext,
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IN PIO_STATUS_BLOCK IoStatusBlock,
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IN ULONG Reserved);
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// *****************************************************************
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int InitializeDistributedLockManager(dlm_nodeid_t *nodeid);
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int InitializeDistributedLock(dlm_lockid_t *lock, dlm_lockid_t parent, char *name, int sz);
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int ConvertDistributedLock(dlm_lockid_t lock, dlm_mode_t mode);
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int ConvertDistributedLockEx(dlm_lockid_t lock, dlm_mode_t mode, int flags, dlm_vblk_t vblk,
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PIO_APC_ROUTINE callback, PVOID arg,
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HANDLE event, PIO_STATUS_BLOCK iostatus);
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int QueueDistributedLockEvent(dlm_lockid_t lock, PIO_APC_ROUTINE callback, PVOID arg,
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HANDLE event, PIO_STATUS_BLOCK iostatus);
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int DestroyDistributedLock(dlm_lockid_t lock);
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#endif
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