Thank you very much!
I got the solution.
It was in my dispatch routine of IRP_MJ_DIRECTORY_CONTROL.
I set the file size to 0 when it is a regular file. So the file size is
always 0.
Your advices help me much.
I use cmd to do the test. And I find that the IRP_MJ_DIRECTORY_CONTROL
was captured by filespy but IRP_MJ_QUERY_INFORMATION was not.
So there’s must be some problem with the dispatch routine of
IRP_MJ_DIRECTORY_CONTROL. And then I got it.
----- 原始邮件 ----
发件人： Rod Widdowson
收件人： Windows File Systems Devs Interest List
发送日期： 2009/11/16 (周一) 10:46:21 下午
主 题： [ntfsd] Re: 回复： [ntfsd] File size doesn’t change in explore.
> 1) When the file size is changed(request such as
> IRP_MJ_SET_INFORMATION, IRP_MJ_WRITE, etc),
> I call FsRtlNotifyFullReportChange with Filter:FILE_NOTIFY_CHANGE_SIZE.
That sounds reasonable.
> 2) I didn’t find the IRP_MJ_NETWORK_QUERY_OPEN major function
> code in my driver. Is it essential?
Ah sorry, you are an FSD aren’t you. In this case it is the FastIoQueryOpen path.
Rod
发件人： Rod Widdowson
收件人： Windows File Systems Devs Interest List
发送日期： 2009/11/14 (周六) 5:28:20 下午
主 题： Re:[ntfsd] File size doesn’t change in explore.
These things are often due to either
1) Not changing the size in IRP_MJ_DIRECTORY_CONTROL
2) Not changing the size in IRP_MJ_NETWORK_QUERY_OPEN
If I might also be so bold: try starting with a test application which is less “challenging” than explorer. Ladislav’s (free) Filetest (http://www.zezula.net/) is awesome for discovering what is happening and you only ever see one IRP at a time.
Good luck
Rod
“光凯 张” wrote in message news:xxxxx@ntfsd…
Hi, guys
First of all, sorry for my poor english.
I got a problem about the file size.
In my file system driver, I handle the IRP_MJ_FILE_INFORMATION request.
And it passes the right value to me(I use filetest to do NtQueryInformation).
But the explorer shows that the file size is 0 bytes. I just don’t know why?
When the file size need to be changed, I set the FO_FILE_MODIFIED flag on
the FileObject, and report the change to the directory. Just hope someone can
give me a hint. Thanks.
Here is my dispatch route to handle IRP_MJ_FILE_INFORMATION:
NTSTATUS
EnfsQueryFileInformation(
IN PENFS_IRP_CONTEXT IrpContext
)
{
//do some check…
switch (FileInformationClass) {
case FileBasicInformation:
{ // Process it and break…
}
case FileStandardInformation:
{ // Process it and break…
}
case FileInternalInformation:
{ // Process it and break…
}
case FileEaInformation:
{ // Process it and break…
}
case FileNameInformation:
{ // Process it and break…
}
case FilePostionInformation:
{ // Process it and break…
}
case FileAllInformation:
{ // Process it and break…
}
case FileNetworkOpenInformation:
{ // Process it and break…
}
case FileAttributeTagInformation:
{ // Process it and break…
}
default:
Status = STATUS_INVALID_PARAMETER;
}
// According to the status code, requeue it requst or complete the request
}
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For our schedule of debugging and file system seminars
(including our new fs mini-filter seminar) visit: http://www.osr.com/seminars
To unsubscribe, visit the List Server section of OSR Online at http://www.osronline.com/page.cfm?name=ListServer
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