fileobsup.c File Reference

#include "npfs.h"

Include dependency graph for fileobsup.c:

Go to the source code of this file.

Macros
#define	NPFS_BUGCHECK_FILE_ID   (NPFS_BUGCHECK_FILEOBSUP)

Functions
NODE_TYPE_CODE NTAPI	NpDecodeFileObject (IN PFILE_OBJECT FileObject, OUT PVOID *PrimaryContext OPTIONAL, OUT PNP_CCB *Ccb, OUT PULONG NamedPipeEnd OPTIONAL)
VOID NTAPI	NpSetFileObject (IN PFILE_OBJECT FileObject, IN PVOID PrimaryContext, IN PVOID Ccb, IN ULONG NamedPipeEnd)

Macro Definition Documentation

NPFS_BUGCHECK_FILE_ID

#define NPFS_BUGCHECK_FILE_ID   (NPFS_BUGCHECK_FILEOBSUP)

Definition at line 14 of file fileobsup.c.

Function Documentation

NpDecodeFileObject()

NODE_TYPE_CODE NTAPI NpDecodeFileObject	(	IN PFILE_OBJECT	FileObject,
		OUT PVOID *PrimaryContext	OPTIONAL,
		OUT PNP_CCB *	Ccb,
		OUT PULONG NamedPipeEnd	OPTIONAL
	)

Definition at line 20 of file fileobsup.c.

{
    ULONG_PTR Context;
    PNP_CCB Node;
    PAGED_CODE();
 
    Context = (ULONG_PTR)FileObject->FsContext;
    if ((Context) && (Context != 1))
    {
        if (NamedPipeEnd) *NamedPipeEnd = Context & 1;
 
        Node = (PVOID)(Context & ~1);
 
        switch (Node->NodeType)
        {
            case NPFS_NTC_VCB:
                *Ccb = NULL;
                if (PrimaryContext) *PrimaryContext = Node;
                return NPFS_NTC_VCB;
 
            case NPFS_NTC_ROOT_DCB:
                *Ccb = FileObject->FsContext2;
                if (PrimaryContext) *PrimaryContext = Node;
                return NPFS_NTC_ROOT_DCB;
 
            case NPFS_NTC_CCB:
                *Ccb = Node;
                if (PrimaryContext) *PrimaryContext = Node->Fcb;
                return NPFS_NTC_CCB;
 
            default:
                NpBugCheck(Node->NodeType, 0, 0);
                break;
            }
    }
 
    return 0;
}

Referenced by NpCommonCleanup(), NpCommonClose(), NpCommonFlushBuffers(), NpCommonQueryInformation(), NpCommonQuerySecurityInfo(), NpCommonRead(), NpCommonSetInformation(), NpCommonSetSecurityInfo(), NpCommonWrite(), NpDisconnect(), NpFsdCreate(), NpImpersonate(), NpListen(), NpPeek(), NpQueryClientProcess(), NpSetClientProcess(), NpTransceive(), and NpWaitForNamedPipe().

NpSetFileObject()

VOID NTAPI NpSetFileObject	(	IN PFILE_OBJECT	FileObject,
		IN PVOID	PrimaryContext,
		IN PVOID	Ccb,
		IN ULONG	NamedPipeEnd
	)

Definition at line 64 of file fileobsup.c.

{
    BOOLEAN FileIsPipe;
    PAGED_CODE();
 
    if (!FileObject) return;
 
    if ((PrimaryContext) && (((PNP_CCB)PrimaryContext)->NodeType == NPFS_NTC_CCB))
    {
        FileIsPipe = TRUE;
        if (NamedPipeEnd == FILE_PIPE_SERVER_END)
        {
            PrimaryContext = (PVOID) ((ULONG_PTR) PrimaryContext | 1);
        }
    }
    else
    {
        FileIsPipe = FALSE;
    }
 
    FileObject->FsContext = PrimaryContext;
    FileObject->FsContext2 = Ccb;
    FileObject->PrivateCacheMap = (PVOID)1;
    if (FileIsPipe) FileObject->Flags |= FO_NAMED_PIPE;
}

Referenced by NpCreateExistingNamedPipe(), NpCreateNewNamedPipe(), NpOpenNamedPipeFileSystem(), NpOpenNamedPipeRootDirectory(), NpSetClosingPipeState(), NpSetConnectedPipeState(), and NpSetDisconnectedPipeState().