How I send a irp to a port driver directly?

Archived from groups: comp.os.ms-windows.programmer.nt.kernel-mode,microsoft.public.development.device.drivers,microsoft.public.win32.programmer.kernel,microsoft.public.windowsxp.device_driver.dev (More info?)

I want send a irp to read a sector from cdrom. I want to bypass the layered
driver architecture of windowsXP and directly send irp to port driver.

Who can help me?

Archived from groups: comp.os.ms-windows.programmer.nt.kernel-mode,microsoft.public.development.device.drivers,microsoft.public.win32.programmer.kernel,microsoft.public.windowsxp.device_driver.dev (More info?)

Sorry. I want send irp in my user application, not in a driver.

"heinz" <heinz_baer@my-deja.com>
??????:1115706177.600236.206960@o13g2000cwo.googlegroups.com...
> Let me state this in another way. Use IoGetDeviceObjectPointer to get
> the top device object and use IoCallDriver to send your IRP down the
> stack which eventually will be handled by the port driver. Will that
> work? If not, what is the problem?
>

Archived from groups: comp.os.ms-windows.programmer.nt.kernel-mode,microsoft.public.development.device.drivers,microsoft.public.win32.programmer.kernel,microsoft.public.windowsxp.device_driver.dev (More info?)

> FireWire interfaces. The legacy way to get a handle is to call
> CreateFile on a device name like "CdRom0".

Drive letter is also fine in the \\.\D: form.

--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com

Archived from groups: comp.os.ms-windows.programmer.nt.kernel-mode,microsoft.public.development.device.drivers,microsoft.public.win32.programmer.kernel,microsoft.public.windowsxp.device_driver.dev (More info?)

You cannot bypass CDFS at all. The IRP will be routed through it anyway.

Passthru just means that these layers - CDFS/CDROM - does not participate
in CDB creation, the CDB will be exactly as built by your app.

--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com

"zhangjf" <zhangjf@argosoft.net> wrote in message
news5rnbn$dri$1@news.yaako.com...
> Now I do as what you said. But the catpure result of "BusTrace 2002
> Professinal" show that the irp was generated as a SCSI Pass Through command
> by "cdfs.sys". I want the irp was sent dorectly to the port driver,
> bypassing the layered driver architecture of windows.
>
> "Maxim S. Shatskih" <maxim@storagecraft.com>
дÈëÏûÏ¢ÐÂÎÅ:%23VlgxsVVFHA.3152@TK2MSFTNGP12.phx.gbl...
> >> FireWire interfaces. The legacy way to get a handle is to call
> >> CreateFile on a device name like "CdRom0".
> >
> > Drive letter is also fine in the \\.\D: form.
> >
> > --
> > Maxim Shatskih, Windows DDK MVP
> > StorageCraft Corporation
> > maxim@storagecraft.com
> > http://www.storagecraft.com
> >
> >
>
>

Archived from groups: comp.os.ms-windows.programmer.nt.kernel-mode,microsoft.public.development.device.drivers,microsoft.public.win32.programmer.kernel,microsoft.public.windowsxp.device_driver.dev (More info?)

It uses unstable hacks.

People who are concerned about stability of their computers do not use this
software, they use Nero instead.

--
Maxim Shatskih, Windows DDK MVP
StorageCraft Corporation
maxim@storagecraft.com
http://www.storagecraft.com

"zhangjf" <zhangjf@argosoft.net> wrote in message
news5rqcn$g7r$1@news.yaako.com...
> I found by BusTrace that the alcohol120% can sent the irp directly to port
> driver.
>
> "Maxim S. Shatskih" <maxim@storagecraft.com>
дÈëÏûÏ¢ÐÂÎÅ5rns6$285r$1@gavrilo.mtu.ru...
> > You cannot bypass CDFS at all. The IRP will be routed through it
> > anyway.
> >
> > Passthru just means that these layers - CDFS/CDROM - does not
> > participate
> > in CDB creation, the CDB will be exactly as built by your app.
> >
> > --
> > Maxim Shatskih, Windows DDK MVP
> > StorageCraft Corporation
> > maxim@storagecraft.com
> > http://www.storagecraft.com
> >
> > "zhangjf" <zhangjf@argosoft.net> wrote in message
> > news5rnbn$dri$1@news.yaako.com...
> >> Now I do as what you said. But the catpure result of "BusTrace 2002
> >> Professinal" show that the irp was generated as a SCSI Pass Through
> >> command
> >> by "cdfs.sys". I want the irp was sent dorectly to the port driver,
> >> bypassing the layered driver architecture of windows.
> >>
> >> "Maxim S. Shatskih" <maxim@storagecraft.com>
> > дÈëÏûÏ¢ÐÂÎÅ:%23VlgxsVVFHA.3152@TK2MSFTNGP12.phx.gbl...
> >> >> FireWire interfaces. The legacy way to get a handle is to call
> >> >> CreateFile on a device name like "CdRom0".
> >> >
> >> > Drive letter is also fine in the \\.\D: form.
> >> >
> >> > --
> >> > Maxim Shatskih, Windows DDK MVP
> >> > StorageCraft Corporation
> >> > maxim@storagecraft.com
> >> > http://www.storagecraft.com
> >> >
> >> >
> >>
> >>
> >
> >
>
>