Mmmkay… then I’d go with Bi Chen’s suggestion just to pass around the
file object, not the handle, and build your own IRPs. It is really not
that difficult to build your own read/write/query/set IRPs, there is
code floating around the ntfsd archives for this, and also in the
FileSpy sample.
- Nicholas Ryan
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Prokash Sinha
Sent: Thursday, October 31, 2002 4:51 PM
To: File Systems Developers
Subject: [ntfsd] Re: Are there any know way to Open(Create) a file fro m
DriverEntry, c lose in a different context
For sure this flag is not defined on the headers for nt4 ddk. But I am
not sure if the behavior is same or not. Since it is a magic const, easy
to put it in, provided the routine has to handle it internally !!!
Any thoughts ?
I definitely need it for nt4
-prokash
-----Original Message-----
From: Nicholas Ryan [mailto:xxxxx@nryan.com]
Sent: Thursday, October 31, 2002 4:31 PM
To: File Systems Developers
Subject: [ntfsd] Re: Are there any know way to Open(Create) a file fro m
DriverEntry, c lose in a different context
This should work as advertised, but I think it’s not supported in NT4
(one of the big deficiencies in the DDK is that Microsoft makes no
effort in the docs to describe what is and is not supported by the
various OS’s. Since when did any of us write a commercial driver that we
could get away with restricting to XP or later?).
- Nicholas Ryan
-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of Prokash Sinha
Sent: Thursday, October 31, 2002 3:53 PM
To: File Systems Developers
Subject: [ntfsd] Re: Are there any know way to Open(Create) a file fro m
DriverEntry, c lose in a different context
Have you tried this before?. Or anybody (pls !) . This is a simple
change, otherwise a *loaded gun* approach BI suggested would have to be
followed.
-prokash
-----Original Message-----
From: Alexey Logachyov [mailto:xxxxx@vba.com.by]
Sent: Thursday, October 31, 2002 3:25 PM
To: File Systems Developers
Subject: [ntfsd] Re: Are there any know way to Open(Create) a file from
DriverEntry, c lose in a different context
Try secifying OBJ_KERNEL_HANDLE in InitializeObjectAttributes.
----- Original Message -----
From: Prokash mailto:xxxxx Sinha
To: File Systems mailto:xxxxx Developers
Sent: Friday, November 01, 2002 1:03 AM
Subject: [ntfsd] Are there any know way to Open(Create) a file from
DriverEntry, c lose in a different context
0:
INVALID_KERNEL_HANDLE (93)
This message occurs if kernel code (server, redirector, other driver,
etc.)
attempts to close a handle that is not a valid handle.
Arguments:
Arg1: 00000474, The handle that NtClose was called with.
Arg2: 00000000, means a protected handle was closed.
Arg3: 00000000
Arg4: 00000000
1: The file being created/opened at the DriverEntry(), but trying to
close under a different context.
2: When opening —
<<< In system context - Driver Entry
RtlInitUnicodeString( &fileNameUnicodeString, cwFileName );
InitializeObjectAttributes( &objectAttributes,
&fileNameUnicodeString,
OBJ_CASE_INSENSITIVE |
OBJ_INHERIT, NULL, NULL );
ntStatus = ZwCreateFile( &(pLogCtx->hLogFile), GENERIC_WRITE |
SYNCHRONIZE, &objectAttributes, &ioStatusBlock,
NULL, FILE_ATTRIBUTE_NORMAL,
FILE_SHARE_READ, FILE_SUPERSEDE,
FILE_NON_DIRECTORY_FILE |
FILE_SEQUENTIAL_ONLY | FILE_SYNCHRONOUS_IO_NONALERT,
NULL, 0 );
Q: Is it enough to use OBJ_INHERIT to let the handle be used under
different context ???
Else How could I get this to work ?
Thx in adv.
prokash
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