120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
//
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// REGDYKEY.C
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//
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// Copyright (C) Microsoft Corporation, 1995
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//
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// Implementation of RegCreateDynKey and supporting functions.
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//
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#include "pch.h"
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#ifdef WANT_DYNKEY_SUPPORT
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#ifdef VXD
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#pragma VxD_RARE_CODE_SEG
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#endif
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//
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// VMMRegCreateDynKey
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//
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// See VMM DDK of _RegCreateDynKey.
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//
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LONG
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REGAPI
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VMMRegCreateDynKey(
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LPCSTR lpKeyName,
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LPVOID KeyContext,
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PPROVIDER pProvider,
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PPVALUE pValueList,
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DWORD ValueCount,
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LPHKEY lphKey
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)
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{
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LONG ErrorCode;
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HKEY hKey;
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PINTERNAL_PROVIDER pProviderCopy;
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PPVALUE pCurrentValue;
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if (IsBadHugeReadPtr(pProvider, sizeof(REG_PROVIDER)) ||
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(IsNullPtr(pProvider-> pi_R0_1val) &&
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IsNullPtr(pProvider-> pi_R0_allvals)) ||
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IsBadHugeReadPtr(pValueList, sizeof(PVALUE) * ValueCount))
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return ERROR_INVALID_PARAMETER;
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if ((ErrorCode = RgCreateOrOpenKey(HKEY_DYN_DATA, lpKeyName, &hKey,
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LK_CREATE | LK_CREATEDYNDATA)) != ERROR_SUCCESS)
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return ErrorCode;
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if (!RgLockRegistry())
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ErrorCode = ERROR_LOCK_FAILED;
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else {
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pProviderCopy = RgSmAllocMemory(sizeof(INTERNAL_PROVIDER));
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if (IsNullPtr(pProviderCopy))
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ErrorCode = ERROR_OUTOFMEMORY;
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else {
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// ErrorCode = ERROR_SUCCESS; // Must be true if we're here...
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hKey-> pProvider = pProviderCopy;
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// If no "get single" callback was provided, we can just use the
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// "get atomic" callback.
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if (IsNullPtr(pProvider-> pi_R0_1val))
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pProviderCopy-> ipi_R0_1val = pProvider-> pi_R0_allvals;
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else
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pProviderCopy-> ipi_R0_1val = pProvider-> pi_R0_1val;
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pProviderCopy-> ipi_R0_allvals = pProvider-> pi_R0_allvals;
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pProviderCopy-> ipi_key_context = KeyContext;
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// No point in keeping a whole DWORD for one bit when we can fit
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// it inside the main key structure.
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if (pProvider-> pi_flags & PROVIDER_KEEPS_VALUE_LENGTH)
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hKey-> Flags |= KEYF_PROVIDERHASVALUELENGTH;
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// Loop over all the values and store each name in the registry
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// with a partial PVALUE record as the value's data.
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for (pCurrentValue = pValueList; ValueCount > 0; ValueCount--,
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pCurrentValue++) {
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if (IsBadStringPtr(pCurrentValue-> pv_valuename, (UINT) -1)) {
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ErrorCode = ERROR_INVALID_PARAMETER;
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break;
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}
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// Skip storing the pv_valuename field.
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if ((ErrorCode = RgSetValue(hKey, pCurrentValue-> pv_valuename,
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REG_BINARY, (LPBYTE) &(pCurrentValue-> pv_valuelen),
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sizeof(PVALUE) - FIELD_OFFSET(PVALUE, pv_valuename))) !=
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ERROR_SUCCESS) {
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TRAP();
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break;
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}
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}
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}
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RgUnlockRegistry();
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}
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// Win95 difference: on an error, don't modify lphKey and close the key
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// created above.
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if (ErrorCode == ERROR_SUCCESS)
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*lphKey = hKey;
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else
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VMMRegCloseKey(hKey);
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return ErrorCode;
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}
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#endif // WANT_DYNKEY_SUPPORT
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