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[SERVICES] Implement ScmGetServiceNameFromTag

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This commit is contained in:
Pierre Schweitzer 2018-12-30 13:31:08 +01:00
parent 90f5e6b6c3
commit 519a2c9f6f
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GPG key ID: 7545556C3D585B0B
1 changed files with 76 additions and 2 deletions
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78
base/system/services/database.c
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@ -148,8 +148,82 @@ ScmGetServiceImageByImagePath(LPWSTR lpImagePath)
DWORD
ScmGetServiceNameFromTag(PTAG_INFO_NAME_FROM_TAG_IN_PARAMS InParams, PTAG_INFO_NAME_FROM_TAG_OUT_PARAMS *OutParams)
{
UNIMPLEMENTED;
return ERROR_CALL_NOT_IMPLEMENTED;
PLIST_ENTRY ServiceEntry;
PSERVICE CurrentService;
PSERVICE_IMAGE CurrentImage;
PTAG_INFO_NAME_FROM_TAG_OUT_PARAMS OutBuffer = NULL;
DWORD dwError;
/* Lock the database */
ScmLockDatabaseExclusive();
/* Find the matching service */
ServiceEntry = ServiceListHead.Flink;
while (ServiceEntry != &ServiceListHead)
{
CurrentService = CONTAINING_RECORD(ServiceEntry,
SERVICE,
ServiceListEntry);
/* We must match the tag */
if (CurrentService->dwTag == InParams->dwTag &&
CurrentService->lpImage != NULL)
{
CurrentImage = CurrentService->lpImage;
/* And matching the PID */
if (CurrentImage->hProcess == (HANDLE)InParams->dwPid)
{
break;
}
}
ServiceEntry = ServiceEntry->Flink;
}
/* No match! */
if (ServiceEntry == &ServiceListHead)
{
dwError = ERROR_RETRY;
goto Cleanup;
}
/* Allocate the output buffer */
OutBuffer = MIDL_user_allocate(sizeof(TAG_INFO_NAME_FROM_TAG_OUT_PARAMS));
if (OutBuffer == NULL)
{
dwError = ERROR_NOT_ENOUGH_MEMORY;
goto Cleanup;
}
/* And the buffer for the name */
OutBuffer->pszName = MIDL_user_allocate(wcslen(CurrentService->lpServiceName) * sizeof(WCHAR) + sizeof(UNICODE_NULL));
if (OutBuffer->pszName == NULL)
{
dwError = ERROR_NOT_ENOUGH_MEMORY;
goto Cleanup;
}
/* Fill in output data */
wcscpy(OutBuffer->pszName, CurrentService->lpServiceName);
OutBuffer->TagType = TagTypeService;
/* And return */
*OutParams = OutBuffer;
dwError = ERROR_SUCCESS;
Cleanup:
/* Unlock database */
ScmUnlockDatabase();
/* If failure, free allocated memory */
if (dwError != ERROR_SUCCESS)
{
MIDL_user_free(OutBuffer);
}
/* Return error/success */
return dwError;
}