https://git.reactos.org/?p=reactos.git;a=commitdiff;h=f87fb4e3df68aa1acffea5ca31d2d733d882128d
commit f87fb4e3df68aa1acffea5ca31d2d733d882128d Author: George Bișoc <[email protected]> AuthorDate: Sat Aug 8 16:32:12 2020 +0200 Commit: Stanislav Motylkov <[email protected]> CommitDate: Wed Aug 26 17:40:45 2020 +0300 [NTOS:RTL] Implement the kernel-mode version of RtlGetNtProductType (#3029) RtlGetNtProductType comes into two variants: one in user-mode that is exported for use from NTDLL layer and the kernel-mode that is used exclusively by the NT kernel. The kernel-mode variant of the function is not exported. --- ntoskrnl/rtl/misc.c | 143 +++++++++++++++++++++++++++++++++++++++++++++ sdk/include/ndk/rtlfuncs.h | 1 + 2 files changed, 144 insertions(+) diff --git a/ntoskrnl/rtl/misc.c b/ntoskrnl/rtl/misc.c index 5d0861d9f11..5cb930e2fb8 100644 --- a/ntoskrnl/rtl/misc.c +++ b/ntoskrnl/rtl/misc.c @@ -19,6 +19,7 @@ extern ULONG NtGlobalFlag; extern ULONG NtMajorVersion; extern ULONG NtMinorVersion; extern ULONG NtOSCSDVersion; +#define PRODUCT_TAG 'iPtR' /* FUNCTIONS *****************************************************************/ @@ -62,6 +63,148 @@ RtlGetVersion(IN OUT PRTL_OSVERSIONINFOW lpVersionInformation) return STATUS_SUCCESS; } +/** + * @brief + * Retrieves the NT type product of the operating system. This is the kernel-mode variant + * of this function. + * + * @param[out] ProductType + * The NT type product enumeration value returned by the call. + * + * @return + * The function returns TRUE when the call successfully returned the type product of the system. + * It'll return FALSE on failure otherwise. In the latter case the function will return WinNT + * as the default product type. + * + * @remarks + * The call expects to be called at PASSIVE_LEVEL. The function firstly checks if the product type is + * actually valid by checking the "ProductTypeIsValid" member of _KUSER_SHARED_DATA structure. + * Currently we do not implement code that is responsible for the management of this member, yet. + * + */ +BOOLEAN +NTAPI +RtlGetNtProductType(OUT PNT_PRODUCT_TYPE ProductType) +{ + HANDLE Key; + BOOLEAN Success; + ULONG ReturnedLength; + OBJECT_ATTRIBUTES ObjectAttributes; + NTSTATUS Status; + PKEY_VALUE_PARTIAL_INFORMATION BufferKey; + ULONG BufferKeyLength = sizeof(PKEY_VALUE_PARTIAL_INFORMATION) + (256 * sizeof(WCHAR)); + UNICODE_STRING NtProductType; + static UNICODE_STRING WorkstationProduct = RTL_CONSTANT_STRING(L"WinNT"); + static UNICODE_STRING LanManProduct = RTL_CONSTANT_STRING(L"LanmanNT"); + static UNICODE_STRING ServerProduct = RTL_CONSTANT_STRING(L"ServerNT"); + static UNICODE_STRING KeyProduct = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Control\\ProductOptions"); + static UNICODE_STRING ValueNtProduct = RTL_CONSTANT_STRING(L"ProductType"); + + PAGED_CODE(); + + /* Before doing anything else we must allocate some buffer space in the pool */ + BufferKey = ExAllocatePoolWithTag(PagedPool, BufferKeyLength, PRODUCT_TAG); + if (!BufferKey) + { + /* We failed to allocate pool memory, bail out */ + DPRINT1("RtlGetNtProductType(): Memory pool allocation has failed!\n"); + Success = FALSE; + goto Exit; + } + + /* Initialize the object attributes to open our key */ + InitializeObjectAttributes(&ObjectAttributes, + &KeyProduct, + OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, + NULL, + NULL); + + /* Open the key */ + Status = ZwOpenKey(&Key, KEY_QUERY_VALUE, &ObjectAttributes); + if (!NT_SUCCESS(Status)) + { + DPRINT1("RtlGetNtProductType(): The ZwOpenKey() function has failed! (Status: 0x%lx)\n", Status); + Success = FALSE; + goto Exit; + } + + /* Now it's time to query the value from the key to check what kind of product the OS is */ + Status = ZwQueryValueKey(Key, + &ValueNtProduct, + KeyValuePartialInformation, + BufferKey, + BufferKeyLength, + &ReturnedLength); + + /* Free the key from the memory */ + ZwClose(Key); + + if (!NT_SUCCESS(Status)) + { + DPRINT1("RtlGetNtProductType(): The ZwQueryValueKey() function has failed! (Status: 0x%lx)\n", Status); + Success = FALSE; + goto Exit; + } + + /* + * Do a sanity check before we get the product type of the operating system + * so that we're sure the type of the value we've got is actually correct. + */ + if (BufferKey->Type != REG_SZ) + { + /* We've got something else, so bail out */ + DPRINT1("RtlGetNtProductType(): An invalid value type has been found!\n"); + Success = FALSE; + goto Exit; + } + + /* Initialise the Unicode string with the data from the registry value */ + NtProductType.Length = NtProductType.MaximumLength = BufferKey->DataLength; + NtProductType.Buffer = (PWCHAR)BufferKey->Data; + + if (NtProductType.Length > sizeof(WCHAR) && NtProductType.Buffer[NtProductType.Length / + sizeof(WCHAR) - 1] == UNICODE_NULL) + { + NtProductType.Length -= sizeof(WCHAR); + } + + /* Now it's time to get the product based on the value data */ + if (RtlCompareUnicodeString(&NtProductType, &WorkstationProduct, TRUE) == 0) + { + /* The following product is an OS Workstation */ + *ProductType = NtProductWinNt; + Success = TRUE; + } + else if (RtlCompareUnicodeString(&NtProductType, &LanManProduct, TRUE) == 0) + { + /* The following product is an OS Advanced Server */ + *ProductType = NtProductLanManNt; + Success = TRUE; + } + else if (RtlCompareUnicodeString(&NtProductType, &ServerProduct, TRUE) == 0) + { + /* The following product is an OS Server */ + *ProductType = NtProductServer; + Success = TRUE; + } + else + { + /* None of the product types match so bail out */ + DPRINT1("RtlGetNtProductType(): Couldn't find a valid product type! Defaulting to WinNT...\n"); + Success = FALSE; + goto Exit; + } + +Exit: + if (!Success) + { + *ProductType = NtProductWinNt; + } + + ExFreePoolWithTag(BufferKey, PRODUCT_TAG); + return Success; +} + #if !defined(_M_IX86) // // Stub for architectures which don't have this implemented diff --git a/sdk/include/ndk/rtlfuncs.h b/sdk/include/ndk/rtlfuncs.h index 85110d3c213..c2a823f17f6 100644 --- a/sdk/include/ndk/rtlfuncs.h +++ b/sdk/include/ndk/rtlfuncs.h @@ -4615,6 +4615,7 @@ RtlGetVersion( PRTL_OSVERSIONINFOW lpVersionInformation ); +_IRQL_requires_max_(PASSIVE_LEVEL) NTSYSAPI BOOLEAN NTAPI
