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[UMPNPMGR] PNP_GetDeviceList: Implement the enumeration of all device instances.
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6d5a7b1ce3
commit
6183774efa
1 changed files with 51 additions and 4 deletions
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@ -671,6 +671,54 @@ GetEnumeratorInstanceList(
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}
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static
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CONFIGRET
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GetAllInstanceList(
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_Inout_ PWSTR pszBuffer,
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_Inout_ PDWORD pulLength)
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{
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WCHAR szEnumeratorBuffer[MAX_DEVICE_ID_LEN];
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PWSTR pPtr;
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DWORD dwIndex, dwEnumeratorLength, dwUsedLength, dwRemainingLength, dwPathLength;
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DWORD dwError;
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CONFIGRET ret = CR_SUCCESS;
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dwUsedLength = 0;
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dwRemainingLength = *pulLength;
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pPtr = pszBuffer;
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for (dwIndex = 0; ; dwIndex++)
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{
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dwEnumeratorLength = MAX_DEVICE_ID_LEN;
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dwError = RegEnumKeyExW(hEnumKey,
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dwIndex,
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szEnumeratorBuffer,
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&dwEnumeratorLength,
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NULL, NULL, NULL, NULL);
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if (dwError != ERROR_SUCCESS)
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break;
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dwPathLength = dwRemainingLength;
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ret = GetEnumeratorInstanceList(szEnumeratorBuffer,
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pPtr,
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&dwPathLength);
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if (ret != CR_SUCCESS)
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break;
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dwUsedLength += dwPathLength - 1;
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dwRemainingLength += dwPathLength - 1;
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pPtr += dwPathLength - 1;
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}
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if (ret == CR_SUCCESS)
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*pulLength = dwUsedLength + 1;
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else
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*pulLength = 0;
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return ret;
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}
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/* Function 10 */
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DWORD
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WINAPI
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@ -766,7 +814,8 @@ PNP_GetDeviceList(
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}
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else /* CM_GETIDLIST_FILTER_NONE */
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{
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ret = CR_CALL_NOT_IMPLEMENTED;
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ret = GetAllInstanceList(Buffer,
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pulLength);
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}
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return ret;
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@ -889,7 +938,6 @@ GetEnumeratorInstanceListSize(
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static
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CONFIGRET
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GetAllInstanceListSize(
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_In_ LPCWSTR pszEnumerator,
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_Out_ PULONG pulLength)
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{
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WCHAR szEnumeratorBuffer[MAX_DEVICE_ID_LEN];
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@ -1016,8 +1064,7 @@ PNP_GetDeviceListSize(
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}
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else /* CM_GETIDLIST_FILTER_NONE */
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{
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ret = GetAllInstanceListSize(pszFilter,
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pulLength);
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ret = GetAllInstanceListSize(pulLength);
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}
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/* Add one character for the terminating double UNICODE_NULL */
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