resrcsup.c File Reference

#include "cdprocs.h"

Include dependency graph for resrcsup.c:

Go to the source code of this file.

Macros
#define	BugCheckFileId   (CDFS_BUG_CHECK_RESRCSUP)

Functions
	_Requires_lock_held_ (_Global_critical_region_)
BOOLEAN NTAPI	CdNoopAcquire (_In_ PVOID Fcb, _In_ BOOLEAN Wait)
VOID NTAPI	CdNoopRelease (_In_ PVOID Fcb)
	_Function_class_ (FAST_IO_RELEASE_FILE)

Macro Definition Documentation

BugCheckFileId

#define BugCheckFileId   (CDFS_BUG_CHECK_RESRCSUP)

Definition at line 22 of file resrcsup.c.

Function Documentation

_Function_class_()

_Function_class_

(

FAST_IO_RELEASE_FILE

)

Definition at line 366 of file resrcsup.c.

{
    PAGED_CODE();
 
    //
    //  Release the resources.
    //
 
    ExReleaseResourceLite( &((PFCB) FileObject->FsContext)->FcbNonpaged->FcbResource );
    ExReleaseResourceLite( ((PFCB) FileObject->FsContext)->Resource);
}

_Requires_lock_held_()

_Requires_lock_held_

(

_Global_critical_region_

)

Definition at line 36 of file resrcsup.c.

{
    BOOLEAN Wait = FALSE;
    BOOLEAN Acquired;
    PAGED_CODE();
 
    //
    //  We look first at the IgnoreWait flag, next at the flag in the Irp
    //  Context to decide how to acquire this resource.
    //
 
    if (!IgnoreWait && FlagOn( IrpContext->Flags, IRP_CONTEXT_FLAG_WAIT )) {
 
        Wait = TRUE;
    }
 
    //
    //  Attempt to acquire the resource either shared or exclusively.
    //
 
    switch (Type) {
        case AcquireExclusive:
 
#ifdef _MSC_VER
#pragma prefast( suppress:28137, "prefast believes Wait should be a constant, but this is ok for CDFS" )
#endif
            Acquired = ExAcquireResourceExclusiveLite( Resource, Wait );
            break;
 
        case AcquireShared:
 
            Acquired = ExAcquireResourceSharedLite( Resource, Wait );
            break;
 
        case AcquireSharedStarveExclusive:
 
            Acquired = ExAcquireSharedStarveExclusive( Resource, Wait );
            break;
 
        default:
            Acquired = FALSE;
            NT_ASSERT( FALSE );
    }
 
    //
    //  If not acquired and the user didn't specifiy IgnoreWait then
    //  raise CANT_WAIT.
    //
 
    if (!Acquired && !IgnoreWait) {
 
        CdRaiseStatus( IrpContext, STATUS_CANT_WAIT );
    }
 
    return Acquired;
}

CdNoopAcquire()

BOOLEAN NTAPI CdNoopAcquire	(	_In_ PVOID	Fcb,
		_In_ BOOLEAN	Wait
	)

Definition at line 218 of file resrcsup.c.

{
    PAGED_CODE();
 
    UNREFERENCED_PARAMETER( Fcb );
    UNREFERENCED_PARAMETER( Wait );
 
    return TRUE;
}

Referenced by CdInitializeGlobalData().

CdNoopRelease()

VOID NTAPI CdNoopRelease

(

_In_ PVOID

Fcb

)

Definition at line 254 of file resrcsup.c.

{
    PAGED_CODE();
 
    UNREFERENCED_PARAMETER( Fcb );
}

Referenced by CdInitializeGlobalData().