Any equivalent of FlushFileBuffers in kernel?

NTFSD
1

Hi,
Is there any equivalent of the following usermode code in the kernel? When
the usermode program executes this code, all the open files in C drive will
be closed and the data is flushed to the disk. I would like to do this in
the kernel mode. I tried CcFlushCache and CcPurgeCacheSection (using the
file object from ZwCreateFile) but I didn’t see any close files operation,
though the functions return success. I need to do this before I unload my
driver. Thanks for any suggestion!

Regards,
Sin Lam

============================================================
hFile = CreateFile(“\\.\C:”, GENERIC_ALL, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_DIRECTORY, NULL);
FlushFileBuffers(hFile);

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2

Use ZwFlushBuffersFile or assemble your own MJ_FLUSH_BUFFERS IRP and send it down to the FSD.

Max

----- Original Message -----
From: “Tan Sin Lam”
To: “File Systems Developers”
Sent: Wednesday, December 12, 2001 12:19 PM
Subject: [ntfsd] Any equivalent of FlushFileBuffers in kernel?

> Hi,
> Is there any equivalent of the following usermode code in the kernel? When
> the usermode program executes this code, all the open files in C drive will
> be closed and the data is flushed to the disk. I would like to do this in
> the kernel mode. I tried CcFlushCache and CcPurgeCacheSection (using the
> file object from ZwCreateFile) but I didn’t see any close files operation,
> though the functions return success. I need to do this before I unload my
> driver. Thanks for any suggestion!
>
> Regards,
> Sin Lam
>
> ============================================================
> hFile = CreateFile(“\\.\C:”, GENERIC_ALL, FILE_SHARE_READ, NULL,
> OPEN_EXISTING, FILE_ATTRIBUTE_DIRECTORY, NULL);
> FlushFileBuffers(hFile);
> ============================================================
>
>
> —
> You are currently subscribed to ntfsd as: xxxxx@storagecraft.com
> To unsubscribe send a blank email to leave-ntfsd-$subst(‘Recip.MemberIDChar’)@lists.osr.com
>

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