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Did you type cast query_table within the memset()?
With the type casting, even if it's completely wrong (and would crash at run-time if it's wrong), it would compile. I think you must be doing something wrong. I, like Richard, don't have the DDK so I can't try this.
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I think RtlZeroMemory() may not be defined in this compilation unit. Have you #included one of Wdm.h, Ntddk.h, or Ntifs.h in this compilation?
Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman
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Yes, header is ok.
I had already included
ntddk.h, ntifs.h
but, still same error..
I had even tried
memset But the result is same
Error: expression must have (pointer-to-)function type
Regards,
Vishal
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There must be some other code near this line that is causing the problem. Can you post the code about 5 lines before to 5 lines after this, and also the exact text (copied and pasted) of all error messages from the compiler?
Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman
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NTSTATUS DriverEntry (IN PDRIVER_OBJECT DriverObject,IN PUNICODE_STRING RegistryPath)
{
UNICODE_STRING parameter_path;
RTL_QUERY_REGISTRY_TABLE query_table[2];
parameter_path.Length = 0;
parameter_path.MaximumLength = RegistryPath->Length + sizeof(PARAMETER_KEY);
parameter_path.Buffer = (PWSTR) ExAllocatePool(PagedPool, parameter_path.MaximumLength);
if (parameter_path.Buffer == NULL) return STATUS_INSUFFICIENT_RESOURCES;
RtlCopyUnicodeString(¶meter_path, RegistryPath);
RtlAppendUnicodeToString(¶meter_path, PARAMETER_KEY);
RtlZeroMemory(&query_table[0], sizeof(query_table));
query_table[0].Flags = RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_REQUIRED;
query_table[0].Name = NUMBEROFDEVICES_VALUE;
query_table[0].EntryContext = &n_devices;
}
Regards,
Vishal
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Well, I've looked at this and looked at all the documentation I can find and am no nearer an answer. Also, I do not have a copy of the DDK so cannot even try compiling your small sample.
Sorry, but I'm out of suggestions, but I would be really interested to know what the resolution is; let's hope one of the driver experts sees this question tomorrow when everyone is back from their weekend R&R.
Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman
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I had too tried every possible ways, but i am unable to understand why this error is occurred.
Hope some driver experts shed some light on this matter. Anyways thanx for giving your valuable time.
Regards,
Vishal
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I have also tried as many ways that I could to "fix" some sample code to reproduce the error, but have not been able to, nor can I find any examples via Google. Are you using the standard Microsoft DDK, and which version of the compiler are you using?
Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman
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I discovered, by chance, that it can be caused by something like:
int RtlZeroMemory;
RtlZeroMemory(&query_table[0],sizeof(query_table));
because RtlZeroMemory has been defined somewhere as something that is not a function. So you need to track backwards through your source and header files to the definition of RtlZeroMemory, and resolve why it is doing this.
Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman
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Using a DDK set compiler I doubt doing this would compile since it would give a duplicate definition error.
--edit--
Oddly it doesn't complain for int RtlZeroMemory, it compiles OK (I guess because it is a #define) however int memset does not compile due to a duplicate deffition error.
So, means he is not using a DDK compiler and build macro by the looks of it, but some other compiler, or doing something else odd in his code.
==============================
Nothing to say.
modified 5-Dec-11 13:04pm.
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Erudite_Eric wrote: or doing something else odd in his code.
I think that's a given, I'm just trying to find out what.
Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman
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Firstly sorry for late reply,
It was really a very strange error, or one can call it a bug.
I just uninstalled the visual studio express ide and re-installed it. After that RtlZeroMemory error had gone. I guess some exception or bug had occured in the ide or compiler or god knows.
Thank you all, for sharing your precious time with me.
Regards,
Vishal
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Richard MacCutchan wrote: let's hope one of the driver experts sees this question tomorrow
I am here. 
See my reply...
==============================
Nothing to say.
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Mmmh, this should be fine.
For testing use also:
RTL_QUERY_REGISTRY_TABLE query_table[2] = {0};
IS this the correct line, where the error comes from ???
Maybe it is:
Table[0].QueryRoutine = &XQueryRoutine;
And XQueryRoutine is wrong defined ?
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Is it the same "Driver code to read registry and set up Win32 symbolic link" found [here?]
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What is the exact error code of that error? I would like to read the definition of the error.
The difficult we do right away...
...the impossible takes slightly longer.
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Hi,
Just from reading it appears to be ok, i'll try to compile the same later tomorrow. Meanwhile; what do you get if you comment the line that is giving the issue?
Which ddk / wdk are you using?
Cheers, AT
Cogito ergo sum
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vishalgpt wrote: RtlZeroMemory
Why are you using kernel functions?
In user mode uses memset().
So, what is the address of your memory? Well, with arrays it is the array name, so query_table. How long is your memory? Well, it is twice the type, so sizeof(RTL_QUERY_REGISTRY_TABLE) * 2.
So, call:
memset(quary_table, 0, sizeof(RTL_QUERY_REGISTRY_TABLE) * 2);
Remember, think memory address, think size.
--edit--
OK, so you are writing a driver...
You really should understand memory (and the C language) better than this before you write drivers because you are going to be in a world of pain, and anyone who gets your driver on their system is too.
==============================
Nothing to say.
modified 5-Dec-11 6:30am.
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How are you building this, wtith a source file and the DDk build macro?
==============================
Nothing to say.
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Hi all
I am having two Arrays with different Length. I have some elements in both Array's In Ascending Order. Also Note that
this Elements are always in Ascending Order.
Example
-------
char array1[200];
char array2[100];
Now both arrays have some elements
array1[0]= "1";
array1[1]= "1.1";
array1[2]= "2";
array1[3]= "2.1";
array2[0]= "1";
array2[1]= "1.1";
array2[2]= "1.2";
array2[3]= "2";
array2[4]= "3";
array2[5]= "3.1";
array2[6]= "3.2";
Now i have to Arrange this Two Arrays such that.
Array1 Elements should be
-------------------------
array1[0]= "1";
array1[1]= "1.1";
array1[2]= ""; //Empty as element array2 contain element
array1[3]= "2"
array1[4]= "2.1"
array1[5]= "" //Empty as element array2 contain element
array1[6]= ""
array1[7]= ""
Array2 Elements should be
-------------------------
array2[0]= "1"
array2[1]= "1.1"
array2[2]= "1.2"
array2[3]= "2"
array2[4]= "" //Empty as element array1 contain element
array2[5]= "3"
array2[6]= "3.1"
array2[7]= "3.2"
-------------------------
How can i replace a Blank if any one Array Element have no Element at that Index.
Help me out.
Thanks,
Uday.
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From the source and destination arrays you provided and your explanation, I do not understand what you're trying to do.
Could you rephrase your question or maybe another example would help.
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The first thing you need to fix is your definitions of the arrays. You have defined both arrays as char and are then saying that each element holds a pointer to a string so your definition needs to be char*. To get the results you want, you first need to sort both arrays in order. Next create a third array (array3) containing all the elements of each array, but only 1 copy of duplicate elements (i.e. a merge of array1 and array2). Now iterate the elements of array3 and put empty strings in any elements which do not exist in array1. Repeat this process for array2 and you should end up with array3 and array4 containing what you want. There is most likely a simpler way to do this but I can't think of one off the top of my head.
Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman
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Thank you Richard for giving me the Idea. Thank You Very Much.
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Happy to help; don't forget to mark answer as accepted.
Unrequited desire is character building. OriginalGriff
I'm sitting here giving you a standing ovation - Len Goodman
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Hi,
If you'd you std::vector<double> you could just insert a item where needed.
Use a for loop on array two, where an item does not exits in array one, add it.
My two cents, AT
Cogito ergo sum
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