[ion] 22936: [FORMATTING] - STDCALL->NTAPI changes, tab->Spaces, name decoration, etc. - Add Eric's name since when I copied security.c into file.c, I forgot to add his name as well for that code.
Author: ion Date: Sat Jul 8 22:57:51 2006 New Revision: 22936
URL: http://svn.reactos.org/svn/reactos?rev=22936&view=rev Log: [FORMATTING] - STDCALL->NTAPI changes, tab->Spaces, name decoration, etc. - Add Eric's name since when I copied security.c into file.c, I forgot to add his name as well for that code.
Modified: trunk/reactos/ntoskrnl/io/iomgr/file.c
Modified: trunk/reactos/ntoskrnl/io/iomgr/file.c URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/io/iomgr/file.c?re... ============================================================================== --- trunk/reactos/ntoskrnl/io/iomgr/file.c (original) +++ trunk/reactos/ntoskrnl/io/iomgr/file.c Sat Jul 8 22:57:51 2006 @@ -5,6 +5,7 @@ * PURPOSE: Functions that deal with managing the FILE_OBJECT itself. * PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org) * Gunnar Dalsnes + * Eric Kohl * Filip Navara (navaraf@reactos.org) */
@@ -1197,7 +1198,7 @@ * @unimplemented */ NTSTATUS -STDCALL +NTAPI IoCheckQuotaBufferValidity(IN PFILE_QUOTA_INFORMATION QuotaBuffer, IN ULONG QuotaLength, OUT PULONG ErrorOffset) @@ -1457,7 +1458,7 @@ * @unimplemented */ NTSTATUS -STDCALL +NTAPI IoCreateFileSpecifyDeviceObjectHint(OUT PHANDLE FileHandle, IN ACCESS_MASK DesiredAccess, IN POBJECT_ATTRIBUTES ObjectAttributes, @@ -1534,7 +1535,7 @@ * @unimplemented */ PFILE_OBJECT -STDCALL +NTAPI IoCreateStreamFileObjectEx(IN PFILE_OBJECT FileObject OPTIONAL, IN PDEVICE_OBJECT DeviceObject OPTIONAL, OUT PHANDLE FileObjectHandle OPTIONAL) @@ -1547,7 +1548,7 @@ * @unimplemented */ PFILE_OBJECT -STDCALL +NTAPI IoCreateStreamFileObjectLite(IN PFILE_OBJECT FileObject OPTIONAL, IN PDEVICE_OBJECT DeviceObject OPTIONAL) { @@ -1559,9 +1560,10 @@ * @implemented */ PGENERIC_MAPPING -STDCALL +NTAPI IoGetFileObjectGenericMapping(VOID) { + /* Return the mapping */ return &IopFileMapping; }
@@ -1574,6 +1576,264 @@ { /* Return the flag status */ return (FileObject->Flags & FO_REMOTE_ORIGIN); +} + +/* + * @implemented + */ +BOOLEAN +NTAPI +IoFastQueryNetworkAttributes(IN POBJECT_ATTRIBUTES ObjectAttributes, + IN ACCESS_MASK DesiredAccess, + IN ULONG OpenOptions, + OUT PIO_STATUS_BLOCK IoStatus, + OUT PFILE_NETWORK_OPEN_INFORMATION Buffer) +{ + NTSTATUS Status; + DUMMY_FILE_OBJECT DummyFileObject; + HANDLE Handle; + OPEN_PACKET OpenPacket; + PAGED_CODE(); + + /* Setup the Open Packet */ + OpenPacket.Type = IO_TYPE_OPEN_PACKET; + OpenPacket.Size = sizeof(OPEN_PACKET); + OpenPacket.FileObject = NULL; + OpenPacket.FinalStatus = STATUS_SUCCESS; + OpenPacket.Information = 0; + OpenPacket.ParseCheck = 0; + OpenPacket.RelatedFileObject = NULL; + OpenPacket.AllocationSize.QuadPart = 0; + OpenPacket.CreateOptions = OpenOptions | FILE_OPEN_REPARSE_POINT; + OpenPacket.FileAttributes = 0; + OpenPacket.ShareAccess = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE; + OpenPacket.EaBuffer = NULL; + OpenPacket.EaLength = 0; + OpenPacket.Options = IO_FORCE_ACCESS_CHECK; + OpenPacket.Disposition = FILE_OPEN; + OpenPacket.BasicInformation = NULL; + OpenPacket.NetworkInformation = Buffer; + OpenPacket.CreateFileType = 0; + OpenPacket.MailslotOrPipeParameters = NULL; + OpenPacket.Override = FALSE; + OpenPacket.QueryOnly = TRUE; + OpenPacket.DeleteOnly = FALSE; + OpenPacket.FullAttributes = TRUE; + OpenPacket.DummyFileObject = &DummyFileObject; + OpenPacket.InternalFlags = 0; + + /* + * Attempt opening the file. This will call the I/O Parse Routine for + * the File Object (IopParseDevice) which will use the dummy file obejct + * send the IRP to its device object. Note that we have two statuses + * to worry about: the Object Manager's status (in Status) and the I/O + * status, which is in the Open Packet's Final Status, and determined + * by the Parse Check member. + */ + Status = ObOpenObjectByName(ObjectAttributes, + NULL, + KernelMode, + NULL, + DesiredAccess, + &OpenPacket, + &Handle); + if (OpenPacket.ParseCheck != TRUE) + { + /* Parse failed */ + IoStatus->Status = Status; + } + else + { + /* Use the Io status */ + IoStatus->Status = OpenPacket.FinalStatus; + IoStatus->Information = OpenPacket.Information; + } + + /* Return success */ + return TRUE; +} + +/* + * @implemented + */ +VOID +NTAPI +IoUpdateShareAccess(IN PFILE_OBJECT FileObject, + OUT PSHARE_ACCESS ShareAccess) +{ + PAGED_CODE(); + + if (FileObject->ReadAccess || + FileObject->WriteAccess || + FileObject->DeleteAccess) + { + ShareAccess->OpenCount++; + + ShareAccess->Readers += FileObject->ReadAccess; + ShareAccess->Writers += FileObject->WriteAccess; + ShareAccess->Deleters += FileObject->DeleteAccess; + ShareAccess->SharedRead += FileObject->SharedRead; + ShareAccess->SharedWrite += FileObject->SharedWrite; + ShareAccess->SharedDelete += FileObject->SharedDelete; + } +} + + +/* + * @implemented + */ +NTSTATUS +NTAPI +IoCheckShareAccess(IN ACCESS_MASK DesiredAccess, + IN ULONG DesiredShareAccess, + IN PFILE_OBJECT FileObject, + IN PSHARE_ACCESS ShareAccess, + IN BOOLEAN Update) +{ + BOOLEAN ReadAccess; + BOOLEAN WriteAccess; + BOOLEAN DeleteAccess; + BOOLEAN SharedRead; + BOOLEAN SharedWrite; + BOOLEAN SharedDelete; + PAGED_CODE(); + + ReadAccess = (DesiredAccess & (FILE_READ_DATA | FILE_EXECUTE)) != 0; + WriteAccess = (DesiredAccess & (FILE_WRITE_DATA | FILE_APPEND_DATA)) != 0; + DeleteAccess = (DesiredAccess & DELETE) != 0; + + FileObject->ReadAccess = ReadAccess; + FileObject->WriteAccess = WriteAccess; + FileObject->DeleteAccess = DeleteAccess; + + if (ReadAccess || WriteAccess || DeleteAccess) + { + SharedRead = (DesiredShareAccess & FILE_SHARE_READ) != 0; + SharedWrite = (DesiredShareAccess & FILE_SHARE_WRITE) != 0; + SharedDelete = (DesiredShareAccess & FILE_SHARE_DELETE) != 0; + + FileObject->SharedRead = SharedRead; + FileObject->SharedWrite = SharedWrite; + FileObject->SharedDelete = SharedDelete; + + if ((ReadAccess && (ShareAccess->SharedRead < ShareAccess->OpenCount)) || + (WriteAccess && (ShareAccess->SharedWrite < ShareAccess->OpenCount)) || + (DeleteAccess && (ShareAccess->SharedDelete < ShareAccess->OpenCount)) || + ((ShareAccess->Readers != 0) && !SharedRead) || + ((ShareAccess->Writers != 0) && !SharedWrite) || + ((ShareAccess->Deleters != 0) && !SharedDelete)) + { + return(STATUS_SHARING_VIOLATION); + } + + if (Update) + { + ShareAccess->OpenCount++; + + ShareAccess->Readers += ReadAccess; + ShareAccess->Writers += WriteAccess; + ShareAccess->Deleters += DeleteAccess; + ShareAccess->SharedRead += SharedRead; + ShareAccess->SharedWrite += SharedWrite; + ShareAccess->SharedDelete += SharedDelete; + } + } + + return(STATUS_SUCCESS); +} + +/* + * @implemented + */ +VOID +NTAPI +IoRemoveShareAccess(IN PFILE_OBJECT FileObject, + IN PSHARE_ACCESS ShareAccess) +{ + PAGED_CODE(); + + if (FileObject->ReadAccess || + FileObject->WriteAccess || + FileObject->DeleteAccess) + { + ShareAccess->OpenCount--; + + ShareAccess->Readers -= FileObject->ReadAccess; + ShareAccess->Writers -= FileObject->WriteAccess; + ShareAccess->Deleters -= FileObject->DeleteAccess; + ShareAccess->SharedRead -= FileObject->SharedRead; + ShareAccess->SharedWrite -= FileObject->SharedWrite; + ShareAccess->SharedDelete -= FileObject->SharedDelete; + } +} + +/* + * @implemented + */ +VOID +NTAPI +IoSetShareAccess(IN ACCESS_MASK DesiredAccess, + IN ULONG DesiredShareAccess, + IN PFILE_OBJECT FileObject, + OUT PSHARE_ACCESS ShareAccess) +{ + BOOLEAN ReadAccess; + BOOLEAN WriteAccess; + BOOLEAN DeleteAccess; + BOOLEAN SharedRead; + BOOLEAN SharedWrite; + BOOLEAN SharedDelete; + PAGED_CODE(); + + ReadAccess = (DesiredAccess & (FILE_READ_DATA | FILE_EXECUTE)) != 0; + WriteAccess = (DesiredAccess & (FILE_WRITE_DATA | FILE_APPEND_DATA)) != 0; + DeleteAccess = (DesiredAccess & DELETE) != 0; + + FileObject->ReadAccess = ReadAccess; + FileObject->WriteAccess = WriteAccess; + FileObject->DeleteAccess = DeleteAccess; + + if (!ReadAccess && !WriteAccess && !DeleteAccess) + { + ShareAccess->OpenCount = 0; + ShareAccess->Readers = 0; + ShareAccess->Writers = 0; + ShareAccess->Deleters = 0; + + ShareAccess->SharedRead = 0; + ShareAccess->SharedWrite = 0; + ShareAccess->SharedDelete = 0; + } + else + { + SharedRead = (DesiredShareAccess & FILE_SHARE_READ) != 0; + SharedWrite = (DesiredShareAccess & FILE_SHARE_WRITE) != 0; + SharedDelete = (DesiredShareAccess & FILE_SHARE_DELETE) != 0; + + FileObject->SharedRead = SharedRead; + FileObject->SharedWrite = SharedWrite; + FileObject->SharedDelete = SharedDelete; + + ShareAccess->OpenCount = 1; + ShareAccess->Readers = ReadAccess; + ShareAccess->Writers = WriteAccess; + ShareAccess->Deleters = DeleteAccess; + + ShareAccess->SharedRead = SharedRead; + ShareAccess->SharedWrite = SharedWrite; + ShareAccess->SharedDelete = SharedDelete; + } +} + +/* + * @unimplemented + */ +VOID +STDCALL +IoCancelFileOpen(IN PDEVICE_OBJECT DeviceObject, + IN PFILE_OBJECT FileObject) +{ + UNIMPLEMENTED; }
/* @@ -1601,25 +1861,7 @@ }
- /* - * NAME EXPORTED - * NtCreateFile@44 - * - * DESCRIPTION - * Entry point to call IoCreateFile with - * default parameters. - * - * ARGUMENTS - * See IoCreateFile. - * - * RETURN VALUE - * See IoCreateFile. - * - * REVISIONS - * 2000-03-25 (ea) - * Code originally in NtCreateFile moved in IoCreateFile. - * * @implemented */ NTSTATUS @@ -1665,41 +1907,44 @@ IN PLARGE_INTEGER TimeOut) { MAILSLOT_CREATE_PARAMETERS Buffer; - - DPRINT("NtCreateMailslotFile(FileHandle 0x%p, DesiredAccess %x, " - "ObjectAttributes 0x%p)\n", - FileHandle,DesiredAccess,ObjectAttributes); - + NTSTATUS Status = STATUS_SUCCESS; PAGED_CODE();
/* Check for Timeout */ - if (TimeOut != NULL) - { + if (DefaultTimeout) + { + /* check if the call came from user mode */ if (KeGetPreviousMode() != KernelMode) { - NTSTATUS Status = STATUS_SUCCESS; - + /* Enter SEH for Probe */ _SEH_TRY { - Buffer.ReadTimeout = ProbeForReadLargeInteger(TimeOut); + /* Probe the timeout */ + Buffer.DefaultTimeout = + ProbeForReadLargeInteger(DefaultTimeout); } _SEH_HANDLE { + /* Get exception code */ Status = _SEH_GetExceptionCode(); } _SEH_END;
+ /* Return the exception */ if (!NT_SUCCESS(Status)) return Status; } else { - Buffer.ReadTimeout = *TimeOut; - } - + /* Otherwise, capture directly */ + Buffer.DefaultTimeout = *DefaultTimeout; + } + + /* Set the correct setting */ Buffer.TimeoutSpecified = TRUE; } else { + /* Tell the FSD we don't have a timeout */ Buffer.TimeoutSpecified = FALSE; }
@@ -1713,7 +1958,7 @@ ObjectAttributes, IoStatusBlock, NULL, - FILE_ATTRIBUTE_NORMAL, + 0, FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_CREATE, CreateOptions, @@ -1725,58 +1970,63 @@ }
NTSTATUS -STDCALL -NtCreateNamedPipeFile(PHANDLE FileHandle, - ACCESS_MASK DesiredAccess, - POBJECT_ATTRIBUTES ObjectAttributes, - PIO_STATUS_BLOCK IoStatusBlock, - ULONG ShareAccess, - ULONG CreateDisposition, - ULONG CreateOptions, - ULONG NamedPipeType, - ULONG ReadMode, - ULONG CompletionMode, - ULONG MaximumInstances, - ULONG InboundQuota, - ULONG OutboundQuota, - PLARGE_INTEGER DefaultTimeout) +NTAPI +NtCreateNamedPipeFile(OUT PHANDLE FileHandle, + IN ACCESS_MASK DesiredAccess, + IN POBJECT_ATTRIBUTES ObjectAttributes, + OUT PIO_STATUS_BLOCK IoStatusBlock, + IN ULONG ShareAccess, + IN ULONG CreateDisposition, + IN ULONG CreateOptions, + IN ULONG NamedPipeType, + IN ULONG ReadMode, + IN ULONG CompletionMode, + IN ULONG MaximumInstances, + IN ULONG InboundQuota, + IN ULONG OutboundQuota, + IN PLARGE_INTEGER DefaultTimeout) { NAMED_PIPE_CREATE_PARAMETERS Buffer; - - DPRINT("NtCreateNamedPipeFile(FileHandle 0x%p, DesiredAccess %x, " - "ObjectAttributes 0x%p)\n", - FileHandle,DesiredAccess,ObjectAttributes); - + NTSTATUS Status = STATUS_SUCCESS; PAGED_CODE();
/* Check for Timeout */ - if (DefaultTimeout != NULL) - { + if (DefaultTimeout) + { + /* check if the call came from user mode */ if (KeGetPreviousMode() != KernelMode) { - NTSTATUS Status = STATUS_SUCCESS; - + /* Enter SEH for Probe */ _SEH_TRY { - Buffer.DefaultTimeout = ProbeForReadLargeInteger(DefaultTimeout); + /* Probe the timeout */ + Buffer.DefaultTimeout = + ProbeForReadLargeInteger(DefaultTimeout); } _SEH_HANDLE { + /* Get exception code */ Status = _SEH_GetExceptionCode(); } _SEH_END;
+ /* Return the exception */ if (!NT_SUCCESS(Status)) return Status; } else { + /* Otherwise, capture directly */ Buffer.DefaultTimeout = *DefaultTimeout; }
+ /* Set the correct setting */ Buffer.TimeoutSpecified = TRUE; } else + { + /* Tell the FSD we don't have a timeout */ Buffer.TimeoutSpecified = FALSE; + }
/* Set Settings */ Buffer.NamedPipeType = NamedPipeType; @@ -1792,7 +2042,7 @@ ObjectAttributes, IoStatusBlock, NULL, - FILE_ATTRIBUTE_NORMAL, + 0, ShareAccess, CreateDisposition, CreateOptions, @@ -1804,58 +2054,27 @@ }
NTSTATUS -STDCALL +NTAPI NtFlushWriteBuffer(VOID) { PAGED_CODE();
+ /* Call the kernel */ KeFlushWriteBuffer(); return STATUS_SUCCESS; }
/* - * NAME EXPORTED - * NtOpenFile@24 - * - * DESCRIPTION - * Opens an existing file (simpler than NtCreateFile). - * - * ARGUMENTS - * FileHandle (OUT) - * Variable that receives the file handle on return; - * - * DesiredAccess - * Access desired by the caller to the file; - * - * ObjectAttributes - * Structue describing the file to be opened; - * - * IoStatusBlock (OUT) - * Receives details about the result of the - * operation; - * - * ShareAccess - * Type of shared access the caller requires; - * - * OpenOptions - * Options for the file open. - * - * RETURN VALUE - * Status. - * - * NOTE - * Undocumented. - * * @implemented */ NTSTATUS -STDCALL -NtOpenFile(PHANDLE FileHandle, - ACCESS_MASK DesiredAccess, - POBJECT_ATTRIBUTES ObjectAttributes, - PIO_STATUS_BLOCK IoStatusBlock, - ULONG ShareAccess, - ULONG OpenOptions) +NTAPI +NtOpenFile(OUT PHANDLE FileHandle, + IN ACCESS_MASK DesiredAccess, + IN POBJECT_ATTRIBUTES ObjectAttributes, + OUT PIO_STATUS_BLOCK IoStatusBlock, + IN ULONG ShareAccess, + IN ULONG OpenOptions) { /* Call the I/O Function */ return IoCreateFile(FileHandle, @@ -1875,7 +2094,7 @@ }
NTSTATUS -STDCALL +NTAPI NtQueryAttributesFile(IN POBJECT_ATTRIBUTES ObjectAttributes, OUT PFILE_BASIC_INFORMATION FileInformation) { @@ -1887,7 +2106,7 @@ }
NTSTATUS -STDCALL +NTAPI NtQueryFullAttributesFile(IN POBJECT_ATTRIBUTES ObjectAttributes, OUT PFILE_NETWORK_OPEN_INFORMATION FileInformation) { @@ -2089,263 +2308,4 @@ return OpenPacket.FinalStatus; }
-/* - * @implemented - */ -BOOLEAN -NTAPI -IoFastQueryNetworkAttributes(IN POBJECT_ATTRIBUTES ObjectAttributes, - IN ACCESS_MASK DesiredAccess, - IN ULONG OpenOptions, - OUT PIO_STATUS_BLOCK IoStatus, - OUT PFILE_NETWORK_OPEN_INFORMATION Buffer) -{ - NTSTATUS Status; - DUMMY_FILE_OBJECT DummyFileObject; - HANDLE Handle; - OPEN_PACKET OpenPacket; - PAGED_CODE(); - - /* Setup the Open Packet */ - OpenPacket.Type = IO_TYPE_OPEN_PACKET; - OpenPacket.Size = sizeof(OPEN_PACKET); - OpenPacket.FileObject = NULL; - OpenPacket.FinalStatus = STATUS_SUCCESS; - OpenPacket.Information = 0; - OpenPacket.ParseCheck = 0; - OpenPacket.RelatedFileObject = NULL; - OpenPacket.AllocationSize.QuadPart = 0; - OpenPacket.CreateOptions = OpenOptions | FILE_OPEN_REPARSE_POINT; - OpenPacket.FileAttributes = 0; - OpenPacket.ShareAccess = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE; - OpenPacket.EaBuffer = NULL; - OpenPacket.EaLength = 0; - OpenPacket.Options = IO_FORCE_ACCESS_CHECK; - OpenPacket.Disposition = FILE_OPEN; - OpenPacket.BasicInformation = NULL; - OpenPacket.NetworkInformation = Buffer; - OpenPacket.CreateFileType = 0; - OpenPacket.MailslotOrPipeParameters = NULL; - OpenPacket.Override = FALSE; - OpenPacket.QueryOnly = TRUE; - OpenPacket.DeleteOnly = FALSE; - OpenPacket.FullAttributes = TRUE; - OpenPacket.DummyFileObject = &DummyFileObject; - OpenPacket.InternalFlags = 0; - - /* - * Attempt opening the file. This will call the I/O Parse Routine for - * the File Object (IopParseDevice) which will use the dummy file obejct - * send the IRP to its device object. Note that we have two statuses - * to worry about: the Object Manager's status (in Status) and the I/O - * status, which is in the Open Packet's Final Status, and determined - * by the Parse Check member. - */ - Status = ObOpenObjectByName(ObjectAttributes, - NULL, - KernelMode, - NULL, - DesiredAccess, - &OpenPacket, - &Handle); - if (OpenPacket.ParseCheck != TRUE) - { - /* Parse failed */ - IoStatus->Status = Status; - } - else - { - /* Use the Io status */ - IoStatus->Status = OpenPacket.FinalStatus; - IoStatus->Information = OpenPacket.Information; - } - - /* Return success */ - return TRUE; -} - -/* - * @implemented - */ -VOID STDCALL -IoUpdateShareAccess(PFILE_OBJECT FileObject, - PSHARE_ACCESS ShareAccess) -{ - PAGED_CODE(); - - if (FileObject->ReadAccess || - FileObject->WriteAccess || - FileObject->DeleteAccess) - { - ShareAccess->OpenCount++; - - ShareAccess->Readers += FileObject->ReadAccess; - ShareAccess->Writers += FileObject->WriteAccess; - ShareAccess->Deleters += FileObject->DeleteAccess; - ShareAccess->SharedRead += FileObject->SharedRead; - ShareAccess->SharedWrite += FileObject->SharedWrite; - ShareAccess->SharedDelete += FileObject->SharedDelete; - } -} - - -/* - * @implemented - */ -NTSTATUS STDCALL -IoCheckShareAccess(IN ACCESS_MASK DesiredAccess, - IN ULONG DesiredShareAccess, - IN PFILE_OBJECT FileObject, - IN PSHARE_ACCESS ShareAccess, - IN BOOLEAN Update) -{ - BOOLEAN ReadAccess; - BOOLEAN WriteAccess; - BOOLEAN DeleteAccess; - BOOLEAN SharedRead; - BOOLEAN SharedWrite; - BOOLEAN SharedDelete; - - PAGED_CODE(); - - ReadAccess = (DesiredAccess & (FILE_READ_DATA | FILE_EXECUTE)) != 0; - WriteAccess = (DesiredAccess & (FILE_WRITE_DATA | FILE_APPEND_DATA)) != 0; - DeleteAccess = (DesiredAccess & DELETE) != 0; - - FileObject->ReadAccess = ReadAccess; - FileObject->WriteAccess = WriteAccess; - FileObject->DeleteAccess = DeleteAccess; - - if (ReadAccess || WriteAccess || DeleteAccess) - { - SharedRead = (DesiredShareAccess & FILE_SHARE_READ) != 0; - SharedWrite = (DesiredShareAccess & FILE_SHARE_WRITE) != 0; - SharedDelete = (DesiredShareAccess & FILE_SHARE_DELETE) != 0; - - FileObject->SharedRead = SharedRead; - FileObject->SharedWrite = SharedWrite; - FileObject->SharedDelete = SharedDelete; - - if ((ReadAccess && (ShareAccess->SharedRead < ShareAccess->OpenCount)) || - (WriteAccess && (ShareAccess->SharedWrite < ShareAccess->OpenCount)) || - (DeleteAccess && (ShareAccess->SharedDelete < ShareAccess->OpenCount)) || - ((ShareAccess->Readers != 0) && !SharedRead) || - ((ShareAccess->Writers != 0) && !SharedWrite) || - ((ShareAccess->Deleters != 0) && !SharedDelete)) - { - return(STATUS_SHARING_VIOLATION); - } - - if (Update) - { - ShareAccess->OpenCount++; - - ShareAccess->Readers += ReadAccess; - ShareAccess->Writers += WriteAccess; - ShareAccess->Deleters += DeleteAccess; - ShareAccess->SharedRead += SharedRead; - ShareAccess->SharedWrite += SharedWrite; - ShareAccess->SharedDelete += SharedDelete; - } - } - - return(STATUS_SUCCESS); -} - - -/* - * @implemented - */ -VOID STDCALL -IoRemoveShareAccess(IN PFILE_OBJECT FileObject, - IN PSHARE_ACCESS ShareAccess) -{ - PAGED_CODE(); - - if (FileObject->ReadAccess || - FileObject->WriteAccess || - FileObject->DeleteAccess) - { - ShareAccess->OpenCount--; - - ShareAccess->Readers -= FileObject->ReadAccess; - ShareAccess->Writers -= FileObject->WriteAccess; - ShareAccess->Deleters -= FileObject->DeleteAccess; - ShareAccess->SharedRead -= FileObject->SharedRead; - ShareAccess->SharedWrite -= FileObject->SharedWrite; - ShareAccess->SharedDelete -= FileObject->SharedDelete; - } -} - - -/* - * @implemented - */ -VOID STDCALL -IoSetShareAccess(IN ACCESS_MASK DesiredAccess, - IN ULONG DesiredShareAccess, - IN PFILE_OBJECT FileObject, - OUT PSHARE_ACCESS ShareAccess) -{ - BOOLEAN ReadAccess; - BOOLEAN WriteAccess; - BOOLEAN DeleteAccess; - BOOLEAN SharedRead; - BOOLEAN SharedWrite; - BOOLEAN SharedDelete; - - PAGED_CODE(); - - ReadAccess = (DesiredAccess & (FILE_READ_DATA | FILE_EXECUTE)) != 0; - WriteAccess = (DesiredAccess & (FILE_WRITE_DATA | FILE_APPEND_DATA)) != 0; - DeleteAccess = (DesiredAccess & DELETE) != 0; - - FileObject->ReadAccess = ReadAccess; - FileObject->WriteAccess = WriteAccess; - FileObject->DeleteAccess = DeleteAccess; - - if (!ReadAccess && !WriteAccess && !DeleteAccess) - { - ShareAccess->OpenCount = 0; - ShareAccess->Readers = 0; - ShareAccess->Writers = 0; - ShareAccess->Deleters = 0; - - ShareAccess->SharedRead = 0; - ShareAccess->SharedWrite = 0; - ShareAccess->SharedDelete = 0; - } - else - { - SharedRead = (DesiredShareAccess & FILE_SHARE_READ) != 0; - SharedWrite = (DesiredShareAccess & FILE_SHARE_WRITE) != 0; - SharedDelete = (DesiredShareAccess & FILE_SHARE_DELETE) != 0; - - FileObject->SharedRead = SharedRead; - FileObject->SharedWrite = SharedWrite; - FileObject->SharedDelete = SharedDelete; - - ShareAccess->OpenCount = 1; - ShareAccess->Readers = ReadAccess; - ShareAccess->Writers = WriteAccess; - ShareAccess->Deleters = DeleteAccess; - - ShareAccess->SharedRead = SharedRead; - ShareAccess->SharedWrite = SharedWrite; - ShareAccess->SharedDelete = SharedDelete; - } -} - -/* - * @unimplemented - */ -VOID -STDCALL -IoCancelFileOpen( - IN PDEVICE_OBJECT DeviceObject, - IN PFILE_OBJECT FileObject - ) -{ - UNIMPLEMENTED; -} /* EOF */
-
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