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Re: Interrupt service routine not called by the framework
I was trying also to set up policy and priority but it didn't change anything in calling my ISR.
Don't do ANY of that shit. Take out anything and everything related to your management of interrupts, except for your EvtDeviceInterruptEnable/Disable callbacks, your Dpc and ISR callbacks, EvtDevicePrepareHardware (where you now do nothing at all regarding your interrupts), and the creation of the WdfInterruptObject in EvtDriverDeviceAdd.
That logging output looks like things are all good...
am I able to check somehow if CPU see my interrupt
No. I mean... not without a PCI Bus Analyzer, which I don't think was the intent of your question ;-)
SOMEbody needs to make an affordable PCI Bus Analyzer... I've wanted one myself multiple times in the last two weeks.
In your initial post, you wrote this:
with oscilloscope interrupt line - interrupt is generated correctly by the hardware
This is a BIT confusing... because you say you're on an Express bus. And in that case, there IS no interrupt line. So, I'm a bit confused.
Peter
Testing filesystem filter driver
I am currently implementing a filesystem filter driver. I am curious
if someone could direct me to some resources on how to go about
creating automated tests for testing it? Ideally, I'd like to create
unit-tests for it, but it seems as if unit-tests do not exist for
driver code
thanks,
J
Re: If i use ZwTerminateProcess in the creation callback, what will happen to the rest of callbacks?
Fork does exist in Windows since NT 3.1 The underlying NtCreateProcess has a lot of options. If you are going to be mucking at the level you are attempting find a copy of Windows NT/2000 Native API Reference by Gary Nebbett. If you cannot handle every option in that call, then you have not done things correctly.
Don_Burn
Re: Copy file from one location to other
This is not trivial either. For example, if you are responding to a callback in your driver for Foo.txt in location A and as a result you want to copy it to location B. If you block in the driver and wait for your service to copy the file and in your service you call functions like CopyFile or CreateDirectoryEx you will deadlock b/c the thread you are blocking in the driver will hold a resource and CopyFile and CreateDirectoryEx will ship some work off to a kernel mode worker thread who will also want that resource.
The only solution I have been able to come up with for this is to do a double file copy. Driver copies from location A to a temp file in location C, then service copies from temp file in location to C to location B. This is incredibly inefficient and a bad solution.
So, I have been on the path of converting to doing the copy in kernel mode as well, which opens up a whole different can of worms.
So, after providing that level of experience to this problem, anyone have any other advice to help the OP and me out with this?
Re: How to copy a file in kernel mode?
functions that are available(ZwReadFile, ZwWriteFile, or build your own
irps).
Molly
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-----Original Message-----
From: gaoren [mailto:[email protected]]
Sent: Tuesday, July 09, 2002 7:50 AM
To: File Systems Developers
Subject: [ntfsd] How to copy a file in kernel mode?
Hi all,
Is there any function in kernel can copy a file to another file?
Thanks for help.
Laura
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Re: Preventing driver unload
Re: Preventing driver unload
Re: Preventing driver unload
You can't customize unload behavior at runtime. Eiter you are unloadable or you are not. Implementation wise (and not the documented contract), the presence of DriverUnload is evaluated the stop service API is executed the first time. So any time until that point, DriverUnload can change value. Once it is evaluated and if it is NULL, the result is cached and subsequent unload attempts will fail.
Re: Preventing driver unload
I am expecting something like that for other drivers also.
That is a Filter Manager feature… not a WDM or WDF feature.
What Doron said.
Enter