reactos/sdk/include/ddk/fcbtable.h

   1 #ifndef _RXFCBTABLE_
   2 #define _RXFCBTABLE_
   3
   4 typedef struct _RX_FCB_TABLE_ENTRY {
   5     NODE_TYPE_CODE NodeTypeCode;
   6     NODE_BYTE_SIZE NodeByteSize;
   7     ULONG HashValue;
   8     UNICODE_STRING Path;
   9     LIST_ENTRY HashLinks;
  10     LONG Lookups;
  11 } RX_FCB_TABLE_ENTRY, *PRX_FCB_TABLE_ENTRY;
  12
  13 #define RX_FCB_TABLE_NUMBER_OF_HASH_BUCKETS 32
  14
  15 typedef struct _RX_FCB_TABLE
  16 {
  17     NODE_TYPE_CODE NodeTypeCode;
  18     NODE_BYTE_SIZE NodeByteSize;
  19     volatile ULONG Version;
  20     BOOLEAN CaseInsensitiveMatch;
  21     USHORT NumberOfBuckets;
  22     volatile LONG Lookups;
  23     volatile LONG FailedLookups;
  24     volatile LONG Compares;
  25     ERESOURCE TableLock;
  26     PRX_FCB_TABLE_ENTRY TableEntryForNull;
  27     LIST_ENTRY HashBuckets[RX_FCB_TABLE_NUMBER_OF_HASH_BUCKETS];
  28 } RX_FCB_TABLE, *PRX_FCB_TABLE;
  29
  30 VOID
  31 RxInitializeFcbTable(
  32     _Inout_ PRX_FCB_TABLE FcbTable,
  33     _In_ BOOLEAN CaseInsensitiveMatch);
  34
  35 VOID
  36 RxFinalizeFcbTable(
  37     _Inout_ PRX_FCB_TABLE FcbTable);
  38
  39 PFCB
  40 RxFcbTableLookupFcb(
  41     _In_ PRX_FCB_TABLE FcbTable,
  42     _In_ PUNICODE_STRING Path);
  43
  44 NTSTATUS
  45 RxFcbTableInsertFcb(
  46     _Inout_ PRX_FCB_TABLE FcbTable,
  47     _Inout_ PFCB Fcb);
  48
  49 NTSTATUS
  50 RxFcbTableRemoveFcb(
  51     _Inout_ PRX_FCB_TABLE FcbTable,
  52     _Inout_ PFCB Fcb);
  53
  54 #define RxAcquireFcbTableLockShared(T, W) ExAcquireResourceSharedLite(&(T)->TableLock, W)
  55 #define RxAcquireFcbTableLockExclusive(T, W) ExAcquireResourceExclusiveLite(&(T)->TableLock, W)
  56 #define RxReleaseFcbTableLock(T) ExReleaseResourceLite(&(T)->TableLock)
  57
  58 #define RxIsFcbTableLockExclusive(T) ExIsResourceAcquiredExclusiveLite(&(T)->TableLock)
  59
  60 #define RxIsFcbTableLockAcquired(T) (ExIsResourceAcquiredSharedLite(&(T)->TableLock) ||  \
  61                                      ExIsResourceAcquiredExclusiveLite(&(T)->TableLock))
  62
  63 #ifdef __REACTOS__
  64 #define FCB_HASH_BUCKET(T, H) &(T)->HashBuckets[H % (T)->NumberOfBuckets]
  65 #endif
  66
  67 #endif