Re: Don't receive IRP_MJ_CREATE on a CreateFile

if there is a filesystem mounted on the driver, you will not see create
irps, the FS will. you will only see absolute reads/writes to the
disk/volume

d

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"Thierry Murail" <yarglah@xxxxxxxxxxx> wrote in message
news:45640757$0$1993$426a74cc@xxxxxxxxxxxxxxx
Gianluca Varenni wrote:

I use CreateFile on my device to DeviceIoControl on it.
But AFAI understand I should receive IRP_MJ_CREATE on CreateFile and
CLEANUP
& CLOSE on CloseHandle (am I right ?) but my driver does not receive
these events. But it receive these from other time (maybe explorer.exe).

How do you know that you are receiving IRP_MJ_CREATE requests from
explorer.exe?

It's a DEVICE_DISK and I supposed explorer try to access it.
In fact it's "System" that make these IRP every 5 minutes (IrpTracker is
my
friend :-)

What kind of driver are you working on?

FILE_DEVICE_DISK (based on Ramdisk sample)

You are saying that you are calling CreateFile on your device (e.g.
\\.\Global\MyDriver), and you don't see the corresponding MJ_CREATE
request. Is createfile succeeding?

Yes, and Ioctl requests too.
I CreateFile on the symlink created by the driver, (the drive letter \\
\H:). Another user program ("consumer") just read/write on the device and
there's also no IRP_MJ_CREATE/CLEANUP/CLOSE.





.

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