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reactos/dll/win32/kernel32/client/utils.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS system libraries
* FILE: dll/win32/kernel32/client/utils.c
* PURPOSE: Utility and Support Functions
* PROGRAMMER: Alex Ionescu (alex@relsoft.net)
* Pierre Schweitzer (pierre.schweitzer@reactos.org)
*/
/* INCLUDES ******************************************************************/
#include <k32.h>
#ifdef _M_IX86
#include "i386/ketypes.h"
#elif defined _M_AMD64
#include "amd64/ketypes.h"
#endif
#define NDEBUG
#include <debug.h>
/* GLOBALS ********************************************************************/
UNICODE_STRING Restricted = RTL_CONSTANT_STRING(L"Restricted");
BOOL bIsFileApiAnsi = TRUE; // set the file api to ansi or oem
PRTL_CONVERT_STRING Basep8BitStringToUnicodeString = RtlAnsiStringToUnicodeString;
PRTL_CONVERT_STRINGA BasepUnicodeStringTo8BitString = RtlUnicodeStringToAnsiString;
PRTL_COUNT_STRING BasepUnicodeStringTo8BitSize = BasepUnicodeStringToAnsiSize;
PRTL_COUNT_STRINGA Basep8BitStringToUnicodeSize = BasepAnsiStringToUnicodeSize;
/* FUNCTIONS ******************************************************************/
ULONG
NTAPI
BasepUnicodeStringToOemSize(IN PUNICODE_STRING String)
{
return RtlUnicodeStringToOemSize(String);
}
ULONG
NTAPI
BasepOemStringToUnicodeSize(IN PANSI_STRING String)
{
return RtlOemStringToUnicodeSize(String);
}
ULONG
NTAPI
BasepUnicodeStringToAnsiSize(IN PUNICODE_STRING String)
{
return RtlUnicodeStringToAnsiSize(String);
}
ULONG
NTAPI
BasepAnsiStringToUnicodeSize(IN PANSI_STRING String)
{
return RtlAnsiStringToUnicodeSize(String);
}
HANDLE
WINAPI
BaseGetNamedObjectDirectory(VOID)
{
OBJECT_ATTRIBUTES ObjectAttributes;
NTSTATUS Status;
HANDLE DirHandle, BnoHandle, Token, NewToken;
if (BaseNamedObjectDirectory) return BaseNamedObjectDirectory;
if (NtCurrentTeb()->IsImpersonating)
{
Status = NtOpenThreadToken(NtCurrentThread(),
TOKEN_IMPERSONATE,
TRUE,
&Token);
if (!NT_SUCCESS(Status)) return BaseNamedObjectDirectory;
NewToken = NULL;
Status = NtSetInformationThread(NtCurrentThread(),
ThreadImpersonationToken,
&NewToken,
sizeof(HANDLE));
if (!NT_SUCCESS (Status))
{
NtClose(Token);
return BaseNamedObjectDirectory;
}
}
else
{
Token = NULL;
}
RtlAcquirePebLock();
if (BaseNamedObjectDirectory) goto Quickie;
InitializeObjectAttributes(&ObjectAttributes,
&BaseStaticServerData->NamedObjectDirectory,
OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = NtOpenDirectoryObject(&BnoHandle,
DIRECTORY_QUERY |
DIRECTORY_TRAVERSE |
DIRECTORY_CREATE_OBJECT |
DIRECTORY_CREATE_SUBDIRECTORY,
&ObjectAttributes);
if (!NT_SUCCESS(Status))
{
Status = NtOpenDirectoryObject(&DirHandle,
DIRECTORY_TRAVERSE,
&ObjectAttributes);
if (NT_SUCCESS(Status))
{
InitializeObjectAttributes(&ObjectAttributes,
(PUNICODE_STRING)&Restricted,
OBJ_CASE_INSENSITIVE,
DirHandle,
NULL);
Status = NtOpenDirectoryObject(&BnoHandle,
DIRECTORY_QUERY |
DIRECTORY_TRAVERSE |
DIRECTORY_CREATE_OBJECT |
DIRECTORY_CREATE_SUBDIRECTORY,
&ObjectAttributes);
NtClose(DirHandle);
}
}
if (NT_SUCCESS(Status)) BaseNamedObjectDirectory = BnoHandle;
Quickie:
RtlReleasePebLock();
if (Token)
{
NtSetInformationThread(NtCurrentThread(),
ThreadImpersonationToken,
&Token,
sizeof(Token));
NtClose(Token);
}
return BaseNamedObjectDirectory;
}
VOID
NTAPI
BasepLocateExeLdrEntry(IN PLDR_DATA_TABLE_ENTRY Entry,
IN PVOID Context,
OUT BOOLEAN *StopEnumeration)
{
/* Make sure we get Entry, Context and valid StopEnumeration pointer */
ASSERT(Entry);
ASSERT(Context);
ASSERT(StopEnumeration);
/* If entry is already found - signal to stop */
if (BasepExeLdrEntry)
{
*StopEnumeration = TRUE;
return;
}
/* Otherwise keep enumerating until we find a match */
if (Entry->DllBase == Context)
{
/* It matches, so remember the ldr entry */
BasepExeLdrEntry = Entry;
/* And stop enumeration */
*StopEnumeration = TRUE;
}
}
/*
* Converts an ANSI or OEM String to the TEB StaticUnicodeString
*/
PUNICODE_STRING
WINAPI
Basep8BitStringToStaticUnicodeString(IN LPCSTR String)
{
PUNICODE_STRING StaticString = &(NtCurrentTeb()->StaticUnicodeString);
ANSI_STRING AnsiString;
NTSTATUS Status;
/* Initialize an ANSI String */
Status = RtlInitAnsiStringEx(&AnsiString, String);
if (!NT_SUCCESS(Status))
{
Status = STATUS_BUFFER_OVERFLOW;
}
else
{
/* Convert it */
Status = Basep8BitStringToUnicodeString(StaticString, &AnsiString, FALSE);
}
if (NT_SUCCESS(Status)) return StaticString;
if (Status == STATUS_BUFFER_OVERFLOW)
{
SetLastError(ERROR_FILENAME_EXCED_RANGE);
}
else
{
BaseSetLastNTError(Status);
}
return NULL;
}
/*
* Allocates space from the Heap and converts an Unicode String into it
*/
BOOLEAN
WINAPI
Basep8BitStringToDynamicUnicodeString(OUT PUNICODE_STRING UnicodeString,
IN LPCSTR String)
{
ANSI_STRING AnsiString;
NTSTATUS Status;
/* Initialize an ANSI String */
Status = RtlInitAnsiStringEx(&AnsiString, String);
if (!NT_SUCCESS(Status))
{
Status = STATUS_BUFFER_OVERFLOW;
}
else
{
/* Convert it */
Status = Basep8BitStringToUnicodeString(UnicodeString, &AnsiString, TRUE);
}
if (NT_SUCCESS(Status)) return TRUE;
if (Status == STATUS_BUFFER_OVERFLOW)
{
SetLastError(ERROR_FILENAME_EXCED_RANGE);
}
else
{
BaseSetLastNTError(Status);
}
return FALSE;
}
/*
* Allocates space from the Heap and converts an Ansi String into it
*/
/*NOTE: API IS A HACK */
VOID
WINAPI
BasepAnsiStringToHeapUnicodeString(IN LPCSTR AnsiString,
OUT LPWSTR* UnicodeString)
{
ANSI_STRING AnsiTemp;
UNICODE_STRING UnicodeTemp;
DPRINT("BasepAnsiStringToHeapUnicodeString\n");
/* First create the ANSI_STRING */
RtlInitAnsiString(&AnsiTemp, AnsiString);
if (NT_SUCCESS(RtlAnsiStringToUnicodeString(&UnicodeTemp,
&AnsiTemp,
TRUE)))
{
*UnicodeString = UnicodeTemp.Buffer;
}
else
{
*UnicodeString = NULL;
}
}
PLARGE_INTEGER
WINAPI
BaseFormatTimeOut(OUT PLARGE_INTEGER Timeout,
IN DWORD dwMilliseconds)
{
/* Check if this is an infinite wait, which means no timeout argument */
if (dwMilliseconds == INFINITE) return NULL;
/* Otherwise, convert the time to NT Format */
Timeout->QuadPart = dwMilliseconds * -10000LL;
return Timeout;
}
/*
* Converts lpSecurityAttributes + Object Name into ObjectAttributes.
*/
POBJECT_ATTRIBUTES
WINAPI
BaseFormatObjectAttributes(OUT POBJECT_ATTRIBUTES ObjectAttributes,
IN PSECURITY_ATTRIBUTES SecurityAttributes OPTIONAL,
IN PUNICODE_STRING ObjectName)
{
ULONG Attributes;
HANDLE RootDirectory;
PVOID SecurityDescriptor;
DPRINT("BaseFormatObjectAttributes. Security: %p, Name: %p\n",
SecurityAttributes, ObjectName);
/* Get the attributes if present */
if (SecurityAttributes)
{
Attributes = SecurityAttributes->bInheritHandle ? OBJ_INHERIT : 0;
SecurityDescriptor = SecurityAttributes->lpSecurityDescriptor;
}
else
{
if (!ObjectName) return NULL;
Attributes = 0;
SecurityDescriptor = NULL;
}
if (ObjectName)
{
Attributes |= OBJ_OPENIF;
RootDirectory = BaseGetNamedObjectDirectory();
}
else
{
RootDirectory = NULL;
}
/* Create the Object Attributes */
InitializeObjectAttributes(ObjectAttributes,
ObjectName,
Attributes,
RootDirectory,
SecurityDescriptor);
DPRINT("Attributes: %lx, RootDirectory: %p, SecurityDescriptor: %p\n",
Attributes, RootDirectory, SecurityDescriptor);
return ObjectAttributes;
}
/*
* Creates a stack for a thread or fiber
*/
NTSTATUS
WINAPI
BaseCreateStack(HANDLE hProcess,
SIZE_T StackCommit,
SIZE_T StackReserve,
PINITIAL_TEB InitialTeb)
{
NTSTATUS Status;
PIMAGE_NT_HEADERS Headers;
ULONG_PTR Stack;
BOOLEAN UseGuard;
ULONG PageSize, Dummy, AllocationGranularity;
SIZE_T StackReserveHeader, StackCommitHeader, GuardPageSize, GuaranteedStackCommit;
DPRINT("BaseCreateStack (hProcess: %p, Max: %lx, Current: %lx)\n",
hProcess, StackReserve, StackCommit);
/* Read page size */
PageSize = BaseStaticServerData->SysInfo.PageSize;
AllocationGranularity = BaseStaticServerData->SysInfo.AllocationGranularity;
/* Get the Image Headers */
Headers = RtlImageNtHeader(NtCurrentPeb()->ImageBaseAddress);
if (!Headers) return STATUS_INVALID_IMAGE_FORMAT;
StackCommitHeader = Headers->OptionalHeader.SizeOfStackCommit;
StackReserveHeader = Headers->OptionalHeader.SizeOfStackReserve;
if (!StackReserve) StackReserve = StackReserveHeader;
if (!StackCommit)
{
StackCommit = StackCommitHeader;
}
else if (StackCommit >= StackReserve)
{
StackReserve = ROUND_UP(StackCommit, 1024 * 1024);
}
StackCommit = ROUND_UP(StackCommit, PageSize);
StackReserve = ROUND_UP(StackReserve, AllocationGranularity);
GuaranteedStackCommit = NtCurrentTeb()->GuaranteedStackBytes;
if ((GuaranteedStackCommit) && (StackCommit < GuaranteedStackCommit))
{
StackCommit = GuaranteedStackCommit;
}
if (StackCommit >= StackReserve)
{
StackReserve = ROUND_UP(StackCommit, 1024 * 1024);
}
StackCommit = ROUND_UP(StackCommit, PageSize);
StackReserve = ROUND_UP(StackReserve, AllocationGranularity);
/* Reserve memory for the stack */
Stack = 0;
Status = NtAllocateVirtualMemory(hProcess,
(PVOID*)&Stack,
0,
&StackReserve,
MEM_RESERVE,
PAGE_READWRITE);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failure to reserve stack: %lx\n", Status);
return Status;
}
/* Now set up some basic Initial TEB Parameters */
InitialTeb->AllocatedStackBase = (PVOID)Stack;
InitialTeb->StackBase = (PVOID)(Stack + StackReserve);
InitialTeb->PreviousStackBase = NULL;
InitialTeb->PreviousStackLimit = NULL;
/* Update the Stack Position */
Stack += StackReserve - StackCommit;
/* Check if we will need a guard page */
if (StackReserve > StackCommit)
{
Stack -= PageSize;
StackCommit += PageSize;
UseGuard = TRUE;
}
else
{
UseGuard = FALSE;
}
/* Allocate memory for the stack */
Status = NtAllocateVirtualMemory(hProcess,
(PVOID*)&Stack,
0,
&StackCommit,
MEM_COMMIT,
PAGE_READWRITE);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failure to allocate stack\n");
GuardPageSize = 0;
NtFreeVirtualMemory(hProcess, (PVOID*)&Stack, &GuardPageSize, MEM_RELEASE);
return Status;
}
/* Now set the current Stack Limit */
InitialTeb->StackLimit = (PVOID)Stack;
/* Create a guard page */
if (UseGuard)
{
/* Set the guard page */
GuardPageSize = PAGE_SIZE;
Status = NtProtectVirtualMemory(hProcess,
(PVOID*)&Stack,
&GuardPageSize,
PAGE_GUARD | PAGE_READWRITE,
&Dummy);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failure to set guard page\n");
return Status;
}
/* Update the Stack Limit keeping in mind the Guard Page */
InitialTeb->StackLimit = (PVOID)((ULONG_PTR)InitialTeb->StackLimit +
GuardPageSize);
}
/* We are done! */
return STATUS_SUCCESS;
}
VOID
WINAPI
BaseFreeThreadStack(IN HANDLE hProcess,
IN PINITIAL_TEB InitialTeb)
{
SIZE_T Dummy = 0;
/* Free the Stack */
NtFreeVirtualMemory(hProcess,
&InitialTeb->AllocatedStackBase,
&Dummy,
MEM_RELEASE);
}
/*
* Creates the Initial Context for a Thread or Fiber
*/
VOID
WINAPI
BaseInitializeContext(IN PCONTEXT Context,
IN PVOID Parameter,
IN PVOID StartAddress,
IN PVOID StackAddress,
IN ULONG ContextType)
{
#ifdef _M_IX86
ULONG ContextFlags;
DPRINT("BaseInitializeContext: %p\n", Context);
/* Setup the Initial Win32 Thread Context */
Context->Eax = (ULONG)StartAddress;
Context->Ebx = (ULONG)Parameter;
Context->Esp = (ULONG)StackAddress;
/* The other registers are undefined */
/* Setup the Segments */
Context->SegFs = KGDT_R3_TEB;
Context->SegEs = KGDT_R3_DATA;
Context->SegDs = KGDT_R3_DATA;
Context->SegCs = KGDT_R3_CODE;
Context->SegSs = KGDT_R3_DATA;
Context->SegGs = 0;
/* Set the Context Flags */
ContextFlags = Context->ContextFlags;
Context->ContextFlags = CONTEXT_FULL;
/* Give it some room for the Parameter */
Context->Esp -= sizeof(PVOID);
/* Set the EFLAGS */
Context->EFlags = 0x3000; /* IOPL 3 */
/* What kind of context is being created? */
if (ContextType == 1)
{
/* For Threads */
Context->Eip = (ULONG)BaseThreadStartupThunk;
}
else if (ContextType == 2)
{
/* This is a fiber: make space for the return address */
Context->Esp -= sizeof(PVOID);
*((PVOID*)Context->Esp) = BaseFiberStartup;
/* Is FPU state required? */
Context->ContextFlags |= ContextFlags;
if ((ContextFlags & CONTEXT_FLOATING_POINT) == CONTEXT_FLOATING_POINT)
{
/* Set an initial state */
Context->FloatSave.ControlWord = 0x27F;
Context->FloatSave.StatusWord = 0;
Context->FloatSave.TagWord = 0xFFFF;
Context->FloatSave.ErrorOffset = 0;
Context->FloatSave.ErrorSelector = 0;
Context->FloatSave.DataOffset = 0;
Context->FloatSave.DataSelector = 0;
if (SharedUserData->ProcessorFeatures[PF_XMMI_INSTRUCTIONS_AVAILABLE])
Context->Dr6 = 0x1F80;
}
}
else
{
/* For first thread in a Process */
Context->Eip = (ULONG)BaseProcessStartThunk;
}
#elif defined(_M_AMD64)
DPRINT("BaseInitializeContext: %p\n", Context);
/* Setup the Initial Win32 Thread Context */
Context->Rax = (ULONG_PTR)StartAddress;
Context->Rbx = (ULONG_PTR)Parameter;
Context->Rsp = (ULONG_PTR)StackAddress;
/* The other registers are undefined */
/* Setup the Segments */
Context->SegGs = KGDT64_R3_DATA | RPL_MASK;
Context->SegEs = KGDT64_R3_DATA | RPL_MASK;
Context->SegDs = KGDT64_R3_DATA | RPL_MASK;
Context->SegCs = KGDT64_R3_CODE | RPL_MASK;
Context->SegSs = KGDT64_R3_DATA | RPL_MASK;
Context->SegFs = KGDT64_R3_CMTEB | RPL_MASK;
/* Set the EFLAGS */
Context->EFlags = 0x3000; /* IOPL 3 */
if (ContextType == 1) /* For Threads */
{
Context->Rip = (ULONG_PTR)BaseThreadStartupThunk;
}
else if (ContextType == 2) /* For Fibers */
{
Context->Rip = (ULONG_PTR)BaseFiberStartup;
}
else /* For first thread in a Process */
{
Context->Rip = (ULONG_PTR)BaseProcessStartThunk;
}
/* Set the Context Flags */
Context->ContextFlags = CONTEXT_FULL;
/* Give it some room for the Parameter */
Context->Rsp -= sizeof(PVOID);
#elif defined(_M_ARM)
DPRINT("BaseInitializeContext: %p\n", Context);
// FIXME: check if this is correct!
/* Setup the Initial Win32 Thread Context */
Context->R0 = (ULONG_PTR)StartAddress;
Context->R1 = (ULONG_PTR)Parameter;
Context->Sp = (ULONG_PTR)StackAddress;
if (ContextType == 1) /* For Threads */
{
Context->Pc = (ULONG_PTR)BaseThreadStartupThunk;
}
else if (ContextType == 2) /* For Fibers */
{
Context->Pc = (ULONG_PTR)BaseFiberStartup;
}
else /* For first thread in a Process */
{
Context->Pc = (ULONG_PTR)BaseProcessStartThunk;
}
/* Set the Context Flags */
Context->ContextFlags = CONTEXT_FULL;
/* Give it some room for the Parameter */
Context->Sp -= sizeof(PVOID);
#else
#warning Unknown architecture
UNIMPLEMENTED;
DbgBreakPoint();
#endif
}
/*
* Checks if the privilege for Real-Time Priority is there
* Beware about this function behavior:
* - In case Keep is set to FALSE, then the function will only check
* whether real time is allowed and won't grant the privilege. In that case
* it will return TRUE if allowed, FALSE otherwise. Not a state!
* It means you don't have to release privilege when calling with FALSE.
*/
PVOID
WINAPI
BasepIsRealtimeAllowed(IN BOOLEAN Keep)
{
ULONG Privilege = SE_INC_BASE_PRIORITY_PRIVILEGE;
PVOID State;
NTSTATUS Status;
Status = RtlAcquirePrivilege(&Privilege, 1, 0, &State);
if (!NT_SUCCESS(Status)) return NULL;
if (!Keep)
{
RtlReleasePrivilege(State);
State = (PVOID)TRUE;
}
return State;
}
/*
* Maps an image file into a section
*/
NTSTATUS
WINAPI
BasepMapFile(IN LPCWSTR lpApplicationName,
OUT PHANDLE hSection,
IN PUNICODE_STRING ApplicationName)
{
RTL_RELATIVE_NAME_U RelativeName;
OBJECT_ATTRIBUTES ObjectAttributes;
NTSTATUS Status;
HANDLE hFile = NULL;
IO_STATUS_BLOCK IoStatusBlock;
DPRINT("BasepMapFile\n");
/* Zero out the Relative Directory */
RelativeName.ContainingDirectory = NULL;
/* Find the application name */
if (!RtlDosPathNameToNtPathName_U(lpApplicationName,
ApplicationName,
NULL,
&RelativeName))
{
return STATUS_OBJECT_PATH_NOT_FOUND;
}
DPRINT("ApplicationName %wZ\n", ApplicationName);
DPRINT("RelativeName %wZ\n", &RelativeName.RelativeName);
/* Did we get a relative name? */
if (RelativeName.RelativeName.Length)
{
ApplicationName = &RelativeName.RelativeName;
}
/* Initialize the Object Attributes */
InitializeObjectAttributes(&ObjectAttributes,
ApplicationName,
OBJ_CASE_INSENSITIVE,
RelativeName.ContainingDirectory,
NULL);
/* Try to open the executable */
Status = NtOpenFile(&hFile,
SYNCHRONIZE | FILE_EXECUTE | FILE_READ_DATA,
&ObjectAttributes,
&IoStatusBlock,
FILE_SHARE_DELETE | FILE_SHARE_READ,
FILE_SYNCHRONOUS_IO_NONALERT | FILE_NON_DIRECTORY_FILE);
if (!NT_SUCCESS(Status))
{
DPRINT1("Failed to open file\n");
BaseSetLastNTError(Status);
return Status;
}
/* Create a section for this file */
Status = NtCreateSection(hSection,
SECTION_ALL_ACCESS,
NULL,
NULL,
PAGE_EXECUTE,
SEC_IMAGE,
hFile);
NtClose(hFile);
/* Return status */
DPRINT("Section: %p for file: %p\n", *hSection, hFile);
return Status;
}
/*
* @implemented
*/
BOOLEAN
WINAPI
Wow64EnableWow64FsRedirection(IN BOOLEAN Wow64EnableWow64FsRedirection)
{
NTSTATUS Status;
BOOL Result;
Status = RtlWow64EnableFsRedirection(Wow64EnableWow64FsRedirection);
if (NT_SUCCESS(Status))
{
Result = TRUE;
}
else
{
BaseSetLastNTError(Status);
Result = FALSE;
}
return Result;
}
/*
* @implemented
*/
BOOL
WINAPI
Wow64DisableWow64FsRedirection(IN PVOID *OldValue)
{
NTSTATUS Status;
BOOL Result;
Status = RtlWow64EnableFsRedirectionEx((PVOID)TRUE, OldValue);
if (NT_SUCCESS(Status))
{
Result = TRUE;
}
else
{
BaseSetLastNTError(Status);
Result = FALSE;
}
return Result;
}
/*
* @implemented
*/
BOOL
WINAPI
Wow64RevertWow64FsRedirection(IN PVOID OldValue)
{
NTSTATUS Status;
BOOL Result;
Status = RtlWow64EnableFsRedirectionEx(OldValue, &OldValue);
if (NT_SUCCESS(Status))
{
Result = TRUE;
}
else
{
BaseSetLastNTError(Status);
Result = FALSE;
}
return Result;
}
/*
* @implemented
*/
VOID
WINAPI
SetFileApisToOEM(VOID)
{
/* Set the correct Base Api */
Basep8BitStringToUnicodeString = (PRTL_CONVERT_STRING)RtlOemStringToUnicodeString;
BasepUnicodeStringTo8BitString = RtlUnicodeStringToOemString;
BasepUnicodeStringTo8BitSize = BasepUnicodeStringToOemSize;
Basep8BitStringToUnicodeSize = BasepOemStringToUnicodeSize;
/* FIXME: Old, deprecated way */
bIsFileApiAnsi = FALSE;
}
/*
* @implemented
*/
VOID
WINAPI
SetFileApisToANSI(VOID)
{
/* Set the correct Base Api */
Basep8BitStringToUnicodeString = RtlAnsiStringToUnicodeString;
BasepUnicodeStringTo8BitString = RtlUnicodeStringToAnsiString;
BasepUnicodeStringTo8BitSize = BasepUnicodeStringToAnsiSize;
Basep8BitStringToUnicodeSize = BasepAnsiStringToUnicodeSize;
/* FIXME: Old, deprecated way */
bIsFileApiAnsi = TRUE;
}
/*
* @implemented
*/
BOOL
WINAPI
AreFileApisANSI(VOID)
{
return Basep8BitStringToUnicodeString == RtlAnsiStringToUnicodeString;
}
/*
* @implemented
*/
VOID
WINAPI
BaseMarkFileForDelete(IN HANDLE FileHandle,
IN ULONG FileAttributes)
{
IO_STATUS_BLOCK IoStatusBlock;
FILE_BASIC_INFORMATION FileBasicInfo;
FILE_DISPOSITION_INFORMATION FileDispositionInfo;
/* If no attributes were given, get them */
if (!FileAttributes)
{
FileBasicInfo.FileAttributes = 0;
NtQueryInformationFile(FileHandle,
&IoStatusBlock,
&FileBasicInfo,
sizeof(FileBasicInfo),
FileBasicInformation);
FileAttributes = FileBasicInfo.FileAttributes;
}
/* If file is marked as RO, reset its attributes */
if (FileAttributes & FILE_ATTRIBUTE_READONLY)
{
RtlZeroMemory(&FileBasicInfo, sizeof(FileBasicInfo));
FileBasicInfo.FileAttributes = FILE_ATTRIBUTE_NORMAL;
NtSetInformationFile(FileHandle,
&IoStatusBlock,
&FileBasicInfo,
sizeof(FileBasicInfo),
FileBasicInformation);
}
/* Finally, mark the file for deletion */
FileDispositionInfo.DeleteFile = TRUE;
NtSetInformationFile(FileHandle,
&IoStatusBlock,
&FileDispositionInfo,
sizeof(FileDispositionInfo),
FileDispositionInformation);
}
/*
* @unimplemented
*/
NTSTATUS
WINAPI
BasepCheckWinSaferRestrictions(IN HANDLE UserToken,
IN LPWSTR ApplicationName,
IN HANDLE FileHandle,
OUT PBOOLEAN InJob,
OUT PHANDLE NewToken,
OUT PHANDLE JobHandle)
{
NTSTATUS Status;
/* Validate that there's a name */
if ((ApplicationName) && *(ApplicationName))
{
/* Validate that the required output parameters are there */
if ((InJob) && (NewToken) && (JobHandle))
{
/* Do the work (one day...) */
DPRINT("BasepCheckWinSaferRestrictions is UNIMPLEMENTED\n");
Status = STATUS_SUCCESS;
}
else
{
/* Act as if SEH hit this */
Status = STATUS_ACCESS_VIOLATION;
}
}
else
{
/* Input is invalid */
Status = STATUS_INVALID_PARAMETER;
}
/* Return the status */
return Status;
}
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