typedef enum _KENLISTMENT_STATE
{
         KEnlistmentUninitialized = 0,
         KEnlistmentActive = 256,
         KEnlistmentPreparing = 257,
         KEnlistmentPrepared = 258,
         KEnlistmentInDoubt = 259,
         KEnlistmentCommitted = 260,
         KEnlistmentCommittedNotify = 261,
         KEnlistmentCommitRequested = 262,
         KEnlistmentAborted = 263,
         KEnlistmentDelegated = 264,
         KEnlistmentDelegatedDisconnected = 265,
         KEnlistmentPrePreparing = 266,
         KEnlistmentForgotten = 267,
         KEnlistmentRecovering = 268,
         KEnlistmentSavepointing = 269,
         KEnlistmentAborting = 270,
         KEnlistmentReadOnly = 271,
         KEnlistmentOutcomeUnavailable = 272,
         KEnlistmentOffline = 273,
         KEnlistmentPrePrepared = 274,
         KEnlistmentInitialized = 275
} KENLISTMENT_STATE;

Windows Vista Kernel Structures