How I send a irp to a port driver directly?
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driver architecture of windowsXP and directly send irp to port driver.
Who can help me?
driver architecture of windowsXP and directly send irp to port driver.
Who can help me?
Re: How I send a irp to a port driver directly?
> I want send a irp to read a sector from cdrom. I want to bypass thelayered
> driver architecture of windowsXP and directly send irp to portdriver.
It would be good to know what problem you are trying to solve. Perhaps
there is a better solution that does not involve making a poorly
behaved driver. Because if you bypass the stack, you WILL create field
problems. When possible, please specify what you are trying to solve
instead of asking how to do bad things. I think you will like the
alternate solutions you will discover.
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How I send a irp to a port driver directly?
I want send a irp to read a sector from cdrom. I want to bypass the layereddriver architecture of windowsXP and directly send irp to port driver.
Who can help me?
Guest
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Re: How I send a irp to a port driver directly?
Let me state this in another way. Use IoGetDeviceObjectPointer to getthe 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?
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Re: How I send a irp to a port driver directly?
Sorry. I want send irp in my user application, not in a driver."heinz" <heinz_baer@my-deja.com>
??????:1115706177.600236.206960@o13g2000cwo.google groups.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?
>
Guest
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Re: How I send a irp to a port driver directly?
If you want really low level, you could use DeviceIoControl withIOCTL_SCSI_PASS_THROUGH. See the SPTI example in the DDK which is an
application, not a driver and it works with SCSI, ATAPI, USB, and
FireWire interfaces. The legacy way to get a handle is to call
CreateFile on a device name like "CdRom0". The new way is to discover
CD-ROM devices using the Setup API's to enumerate them.
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Re: How I send a irp to a port driver directly?
> 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
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Re: How I send a irp to a port driver directly?
Now I do as what you said. But the catpure result of "BusTrace 2002Professinal" 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.g bl...
>> 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
>
>
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Re: How I send a irp to a port driver directly?
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
news:d5rnbn$dri$1@news.yaako.com...
> Now I do as what you said. But the catpure result of "BusTrace 2002дÈëÏûÏ¢ÐÂÎÅ:%23VlgxsVVFHA.3152@TK2MSFTNGP12.phx.g bl...
> 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>
>> >> 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
> >
> >
>
Guest
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Re: How I send a irp to a port driver directly?
I found by BusTrace that the alcohol120% can sent the irp directly to portdriver.
"Maxim S. Shatskih" <maxim@storagecraft.com> дÈëÏûÏ¢ÐÂÎÅ:d5rns6$285r$1@gavrilo.mtu.ru...
> You cannot bypass CDFS at all. The IRP will be routed through it
> anyway.
>
> Passthru just means that these layers - CDFS/CDROM - does not
> participate
> in CDB creation, the CDB will be exactly as built by your app.
>
> --
> Maxim Shatskih, Windows DDK MVP
> StorageCraft Corporation
> maxim@storagecraft.com
> http://www.storagecraft.com
>
> "zhangjf" <zhangjf@argosoft.net> wrote in message
> news:d5rnbn$dri$1@news.yaako.com...>> Now I do as what you said. But the catpure result of "BusTrace 2002> дÈëÏûÏ¢ÐÂÎÅ:%23VlgxsVVFHA.3152@TK2MSFTNGP12.phx.g bl...
>> 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>>>> >> 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
>> >
>> >
>>
>
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