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POKeyInformation parameter of NtEnumerateKey()
 

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  1. POKeyInformation parameter of NtEnumerateKey()
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    <p>I'm curious to know how the <code>KeyInformation</code> parameter should be passed to <code>NtEnumerateKey()</code>. When I run the following code, <code>NtEnumerateKey()</code> returns <code>NTSTATUS = 0xC000000D</code> with the error message <i>"An invalid parameter was passed to a service or function."</i></p> <p>I'm using Windows 7. Although the following code uses Delphi language, you can answer my question in C language too. My question is not specific to a programming language.</p> <pre><code>type KEY_NAME_INFORMATION = record NameLength: ULONG; Name: array[0..254] of WCHAR; end; PKEY_NAME_INFORMATION = ^KEY_NAME_INFORMATION; var iNtStatus: LONG; hKeyResult: THandle; KeyNameInfo: KEY_NAME_INFORMATION; iResultLen: ULONG; iNtStatus := NtOpenKey(@hKeyResult, (KEY_ENUMERATE_SUB_KEYS) and not SYNCHRONIZE, @rObjAttrs); if hKeyResult = 0 then Exit; iNtStatus := NtEnumerateKey(hKeyResult, 0, KeyNameInformation, @KeyNameInfo, // I'm asking about this parameter, SizeOf(KEY_NAME_INFORMATION), // and also this parameter @iResultLen); </code></pre> <h2>UPDATED: Weird Thing</h2> <p>If I pass <code>KeyBasicInformation</code> instead of <code>KeyNameInformation</code>, <code>NtEnumerateKey()</code> returns <code>STATUS_SUCCESS</code>. Does not <code>NtEnumerateKey()</code> support the <code>KeyNameInformation</code>?</p> <pre><code>type KEY_BASIC_INFORMATION = record LastWriteTime: LARGE_INTEGER; TitleIndex: ULONG; NameLength: ULONG; Name: array[0..254] of WCHAR; end; PKEY_BASIC_INFORMATION = ^KEY_BASIC_INFORMATION; var KeyBasicInfo: KEY_BASIC_INFORMATION; iNtStatus := NtEnumerateKey(hKeyResult, 0, KeyBasicInformation, // Note this! @KeyBasicInfo, // Note this! SizeOf(KEY_BASIC_INFORMATION), // Note this! @iResultLen); </code></pre>
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