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[UMPNPMGR] PNP_GetDeviceList: Implement the enumeration of all device instances.

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This commit is contained in:
Eric Kohl 2018-12-30 17:14:43 +01:00
parent 6d5a7b1ce3
commit 6183774efa
1 changed files with 51 additions and 4 deletions
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55
base/services/umpnpmgr/umpnpmgr.c
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@ -671,6 +671,54 @@ GetEnumeratorInstanceList(
} }
static
CONFIGRET
GetAllInstanceList(
_Inout_ PWSTR pszBuffer,
_Inout_ PDWORD pulLength)
{
WCHAR szEnumeratorBuffer[MAX_DEVICE_ID_LEN];
PWSTR pPtr;
DWORD dwIndex, dwEnumeratorLength, dwUsedLength, dwRemainingLength, dwPathLength;
DWORD dwError;
CONFIGRET ret = CR_SUCCESS;
dwUsedLength = 0;
dwRemainingLength = *pulLength;
pPtr = pszBuffer;
for (dwIndex = 0; ; dwIndex++)
{
dwEnumeratorLength = MAX_DEVICE_ID_LEN;
dwError = RegEnumKeyExW(hEnumKey,
dwIndex,
szEnumeratorBuffer,
&dwEnumeratorLength,
NULL, NULL, NULL, NULL);
if (dwError != ERROR_SUCCESS)
break;
dwPathLength = dwRemainingLength;
ret = GetEnumeratorInstanceList(szEnumeratorBuffer,
pPtr,
&dwPathLength);
if (ret != CR_SUCCESS)
break;
dwUsedLength += dwPathLength - 1;
dwRemainingLength += dwPathLength - 1;
pPtr += dwPathLength - 1;
}
if (ret == CR_SUCCESS)
*pulLength = dwUsedLength + 1;
else
*pulLength = 0;
return ret;
}
/* Function 10 */ /* Function 10 */
DWORD DWORD
WINAPI WINAPI
@ -766,7 +814,8 @@ PNP_GetDeviceList(
} }
else /* CM_GETIDLIST_FILTER_NONE */ else /* CM_GETIDLIST_FILTER_NONE */
{ {
ret = CR_CALL_NOT_IMPLEMENTED; ret = GetAllInstanceList(Buffer,
pulLength);
} }
return ret; return ret;
@ -889,7 +938,6 @@ GetEnumeratorInstanceListSize(
static static
CONFIGRET CONFIGRET
GetAllInstanceListSize( GetAllInstanceListSize(
_In_ LPCWSTR pszEnumerator,
_Out_ PULONG pulLength) _Out_ PULONG pulLength)
{ {
WCHAR szEnumeratorBuffer[MAX_DEVICE_ID_LEN]; WCHAR szEnumeratorBuffer[MAX_DEVICE_ID_LEN];
@ -1016,8 +1064,7 @@ PNP_GetDeviceListSize(
} }
else /* CM_GETIDLIST_FILTER_NONE */ else /* CM_GETIDLIST_FILTER_NONE */
{ {
ret = GetAllInstanceListSize(pszFilter, ret = GetAllInstanceListSize(pulLength);
pulLength);
} }
/* Add one character for the terminating double UNICODE_NULL */ /* Add one character for the terminating double UNICODE_NULL */