/*
- * ReactOS kernel
- * Copyright (C) 1998, 1999, 2000, 2001 ReactOS Team
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-/*
- * PROJECT: ReactOS kernel
- * FILE: drivers/fs/vfat/create.c
- * PURPOSE: VFAT Filesystem
- * PROGRAMMER: Jason Filby (jasonfilby@yahoo.com)
+ * PROJECT: ReactOS FAT file system driver
+ * LICENSE: GNU GPLv3 as published by the Free Software Foundation
+ * FILE: drivers/filesystems/fastfat/create.c
+ * PURPOSE: Create routines
+ * PROGRAMMERS: Aleksey Bragin (aleksey@reactos.org)
*/
/* INCLUDES *****************************************************************/
/* FUNCTIONS *****************************************************************/
-void
-vfat8Dot3ToString (PFAT_DIR_ENTRY pEntry, PUNICODE_STRING NameU)
+IO_STATUS_BLOCK
+NTAPI
+FatiOpenRootDcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFILE_OBJECT FileObject,
+ IN PVCB Vcb,
+ IN PACCESS_MASK DesiredAccess,
+ IN USHORT ShareAccess,
+ IN ULONG CreateDisposition)
{
- OEM_STRING StringA;
- USHORT Length;
- CHAR cString[12];
-
- RtlCopyMemory(cString, pEntry->ShortName, 11);
- cString[11] = 0;
- if (cString[0] == 0x05)
- {
- cString[0] = 0xe5;
- }
-
- StringA.Buffer = cString;
- for (StringA.Length = 0;
- StringA.Length < 8 && StringA.Buffer[StringA.Length] != ' ';
- StringA.Length++);
- StringA.MaximumLength = StringA.Length;
-
- RtlOemStringToUnicodeString(NameU, &StringA, FALSE);
-
- if (pEntry->lCase & VFAT_CASE_LOWER_BASE)
- {
- RtlDowncaseUnicodeString(NameU, NameU, FALSE);
- }
- if (cString[8] != ' ')
- {
- Length = NameU->Length;
- NameU->Buffer += Length / sizeof(WCHAR);
- if (!FAT_ENTRY_VOLUME(pEntry))
- {
- Length += sizeof(WCHAR);
- NameU->Buffer[0] = L'.';
- NameU->Buffer++;
- }
- NameU->Length = 0;
- NameU->MaximumLength -= Length;
-
- StringA.Buffer = &cString[8];
- for (StringA.Length = 0;
- StringA.Length < 3 && StringA.Buffer[StringA.Length] != ' ';
- StringA.Length++);
- StringA.MaximumLength = StringA.Length;
- RtlOemStringToUnicodeString(NameU, &StringA, FALSE);
- if (pEntry->lCase & VFAT_CASE_LOWER_EXT)
- {
- RtlDowncaseUnicodeString(NameU, NameU, FALSE);
- }
- NameU->Buffer -= Length / sizeof(WCHAR);
- NameU->Length += Length;
- NameU->MaximumLength += Length;
- }
- NameU->Buffer[NameU->Length / sizeof(WCHAR)] = 0;
- DPRINT("'%wZ'\n", NameU);
+ IO_STATUS_BLOCK Iosb;
+
+ DPRINT1("Opening root directory\n");
+
+ Iosb.Status = STATUS_NOT_IMPLEMENTED;
+
+ return Iosb;
}
-NTSTATUS
-ReadVolumeLabel (PDEVICE_EXTENSION DeviceExt, PVPB Vpb)
-/*
- * FUNCTION: Read the volume label
- */
+FF_ERROR
+NTAPI
+FatiTryToOpen(IN PFILE_OBJECT FileObject,
+ IN PVCB Vcb)
{
- PVOID Context = NULL;
- ULONG DirIndex = 0;
- PDIR_ENTRY Entry;
- PVFATFCB pFcb;
- LARGE_INTEGER FileOffset;
- UNICODE_STRING NameU;
- ULONG SizeDirEntry;
- ULONG EntriesPerPage;
- OEM_STRING StringO;
-
- NameU.Buffer = Vpb->VolumeLabel;
- NameU.Length = 0;
- NameU.MaximumLength = sizeof(Vpb->VolumeLabel);
- *(Vpb->VolumeLabel) = 0;
- Vpb->VolumeLabelLength = 0;
-
- if (DeviceExt->Flags & VCB_IS_FATX)
- {
- SizeDirEntry = sizeof(FATX_DIR_ENTRY);
- EntriesPerPage = FATX_ENTRIES_PER_PAGE;
- }
- else
- {
- SizeDirEntry = sizeof(FAT_DIR_ENTRY);
- EntriesPerPage = FAT_ENTRIES_PER_PAGE;
- }
-
- ExAcquireResourceExclusiveLite (&DeviceExt->DirResource, TRUE);
- pFcb = vfatOpenRootFCB (DeviceExt);
- ExReleaseResourceLite (&DeviceExt->DirResource);
-
- FileOffset.QuadPart = 0;
- if (CcMapData(pFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, &Context, (PVOID*)&Entry))
- {
- while (TRUE)
- {
- if (ENTRY_VOLUME(DeviceExt, Entry))
- {
- /* copy volume label */
- if (DeviceExt->Flags & VCB_IS_FATX)
- {
- StringO.Buffer = (PCHAR)Entry->FatX.Filename;
- StringO.MaximumLength = StringO.Length = Entry->FatX.FilenameLength;
- RtlOemStringToUnicodeString(&NameU, &StringO, FALSE);
- }
- else
- {
- vfat8Dot3ToString (&Entry->Fat, &NameU);
- }
- Vpb->VolumeLabelLength = NameU.Length;
- break;
- }
- if (ENTRY_END(DeviceExt, Entry))
- {
- break;
- }
- DirIndex++;
- Entry = (PDIR_ENTRY)((ULONG_PTR)Entry + SizeDirEntry);
- if ((DirIndex % EntriesPerPage) == 0)
- {
- CcUnpinData(Context);
- FileOffset.u.LowPart += PAGE_SIZE;
- if (!CcMapData(pFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, &Context, (PVOID*)&Entry))
- {
- Context = NULL;
- break;
- }
- }
- }
- if (Context)
- {
- CcUnpinData(Context);
- }
- }
- ExAcquireResourceExclusiveLite (&DeviceExt->DirResource, TRUE);
- vfatReleaseFCB (DeviceExt, pFcb);
- ExReleaseResourceLite (&DeviceExt->DirResource);
-
- return STATUS_SUCCESS;
+ OEM_STRING AnsiName;
+ CHAR AnsiNameBuf[512];
+ FF_ERROR Error;
+ NTSTATUS Status;
+ FF_FILE *FileHandle;
+
+ /* Convert the name to ANSI */
+ AnsiName.Buffer = AnsiNameBuf;
+ AnsiName.Length = 0;
+ AnsiName.MaximumLength = sizeof(AnsiNameBuf);
+ RtlZeroMemory(AnsiNameBuf, sizeof(AnsiNameBuf));
+ Status = RtlUpcaseUnicodeStringToCountedOemString(&AnsiName, &FileObject->FileName, FALSE);
+ if (!NT_SUCCESS(Status))
+ {
+ ASSERT(FALSE);
+ }
+
+ /* Open the file with FullFAT */
+ FileHandle = FF_Open(Vcb->Ioman, AnsiName.Buffer, FF_MODE_READ, &Error);
+
+ /* Close the handle */
+ if (FileHandle) FF_Close(FileHandle);
+
+ /* Return status */
+ return Error;
}
-NTSTATUS
-FindFile (
- PDEVICE_EXTENSION DeviceExt,
- PVFATFCB Parent,
- PUNICODE_STRING FileToFindU,
- PVFAT_DIRENTRY_CONTEXT DirContext,
- BOOLEAN First)
-/*
- * FUNCTION: Find a file
- */
+IO_STATUS_BLOCK
+NTAPI
+FatiOpenExistingDir(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFILE_OBJECT FileObject,
+ IN PVCB Vcb,
+ IN PFCB ParentDcb,
+ IN PACCESS_MASK DesiredAccess,
+ IN USHORT ShareAccess,
+ IN ULONG AllocationSize,
+ IN PFILE_FULL_EA_INFORMATION EaBuffer,
+ IN ULONG EaLength,
+ IN UCHAR FileAttributes,
+ IN ULONG CreateDisposition,
+ IN BOOLEAN DeleteOnClose)
{
- PWCHAR PathNameBuffer;
- USHORT PathNameBufferLength;
- NTSTATUS Status;
- PVOID Context = NULL;
- PVOID Page;
- PVFATFCB rcFcb;
- BOOLEAN Found;
- UNICODE_STRING PathNameU;
- UNICODE_STRING FileToFindUpcase;
- BOOLEAN WildCard;
-
- DPRINT ("FindFile(Parent %p, FileToFind '%wZ', DirIndex: %d)\n",
- Parent, FileToFindU, DirContext->DirIndex);
- DPRINT ("FindFile: Path %wZ\n",&Parent->PathNameU);
-
- PathNameBufferLength = LONGNAME_MAX_LENGTH * sizeof(WCHAR);
- PathNameBuffer = ExAllocatePoolWithTag(NonPagedPool, PathNameBufferLength + sizeof(WCHAR), TAG_VFAT);
- if (!PathNameBuffer)
- {
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
- PathNameU.Buffer = PathNameBuffer;
- PathNameU.Length = 0;
- PathNameU.MaximumLength = PathNameBufferLength;
-
- DirContext->LongNameU.Length = 0;
- DirContext->ShortNameU.Length = 0;
-
- WildCard = FsRtlDoesNameContainWildCards(FileToFindU);
-
- if (WildCard == FALSE)
- {
- /* if there is no '*?' in the search name, than look first for an existing fcb */
- RtlCopyUnicodeString(&PathNameU, &Parent->PathNameU);
- if (!vfatFCBIsRoot(Parent))
- {
- PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = L'\\';
- PathNameU.Length += sizeof(WCHAR);
- }
- RtlAppendUnicodeStringToString(&PathNameU, FileToFindU);
- PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = 0;
- rcFcb = vfatGrabFCBFromTable(DeviceExt, &PathNameU);
- if (rcFcb)
- {
- ULONG startIndex = rcFcb->startIndex;
- if ((rcFcb->Flags & FCB_IS_FATX_ENTRY) && !vfatFCBIsRoot(Parent))
- {
- startIndex += 2;
- }
- if(startIndex >= DirContext->DirIndex)
- {
- RtlCopyUnicodeString(&DirContext->LongNameU, &rcFcb->LongNameU);
- RtlCopyUnicodeString(&DirContext->ShortNameU, &rcFcb->ShortNameU);
- RtlCopyMemory(&DirContext->DirEntry, &rcFcb->entry, sizeof(DIR_ENTRY));
- DirContext->StartIndex = rcFcb->startIndex;
- DirContext->DirIndex = rcFcb->dirIndex;
- DPRINT("FindFile: new Name %wZ, DirIndex %d (%d)\n",
- &DirContext->LongNameU, DirContext->DirIndex, DirContext->StartIndex);
- Status = STATUS_SUCCESS;
- }
- else
- {
- DPRINT("FCB not found for %wZ\n", &PathNameU);
- Status = STATUS_UNSUCCESSFUL;
- }
- vfatReleaseFCB(DeviceExt, rcFcb);
- ExFreePool(PathNameBuffer);
- return Status;
- }
- }
-
- /* FsRtlIsNameInExpression need the searched string to be upcase,
- * even if IgnoreCase is specified */
- Status = RtlUpcaseUnicodeString(&FileToFindUpcase, FileToFindU, TRUE);
- if (!NT_SUCCESS(Status))
- {
- ExFreePool(PathNameBuffer);
- return Status;
- }
-
- while(TRUE)
- {
- Status = DeviceExt->GetNextDirEntry(&Context, &Page, Parent, DirContext, First);
- First = FALSE;
- if (Status == STATUS_NO_MORE_ENTRIES)
- {
- break;
- }
- if (ENTRY_VOLUME(DeviceExt, &DirContext->DirEntry))
- {
- DirContext->DirIndex++;
- continue;
- }
- if (WildCard)
- {
- Found = FsRtlIsNameInExpression(&FileToFindUpcase, &DirContext->LongNameU, TRUE, NULL) ||
- FsRtlIsNameInExpression(&FileToFindUpcase, &DirContext->ShortNameU, TRUE, NULL);
- }
- else
- {
- Found = FsRtlAreNamesEqual(&DirContext->LongNameU, FileToFindU, TRUE, NULL) ||
- FsRtlAreNamesEqual(&DirContext->ShortNameU, FileToFindU, TRUE, NULL);
- }
-
- if (Found)
- {
- if (WildCard)
- {
- RtlCopyUnicodeString(&PathNameU, &Parent->PathNameU);
- if (!vfatFCBIsRoot(Parent))
- {
- PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = L'\\';
- PathNameU.Length += sizeof(WCHAR);
- }
- RtlAppendUnicodeStringToString(&PathNameU, &DirContext->LongNameU);
- PathNameU.Buffer[PathNameU.Length / sizeof(WCHAR)] = 0;
- rcFcb = vfatGrabFCBFromTable(DeviceExt, &PathNameU);
- if (rcFcb != NULL)
- {
- RtlCopyMemory(&DirContext->DirEntry, &rcFcb->entry, sizeof(DIR_ENTRY));
- vfatReleaseFCB(DeviceExt, rcFcb);
- }
- }
- DPRINT("%d\n", DirContext->LongNameU.Length);
- DPRINT("FindFile: new Name %wZ, DirIndex %d\n",
- &DirContext->LongNameU, DirContext->DirIndex);
-
- if (Context)
- {
- CcUnpinData(Context);
- }
- RtlFreeUnicodeString(&FileToFindUpcase);
- ExFreePool(PathNameBuffer);
- return STATUS_SUCCESS;
- }
- DirContext->DirIndex++;
- }
-
- if (Context)
- {
- CcUnpinData(Context);
- }
-
- RtlFreeUnicodeString(&FileToFindUpcase);
- ExFreePool(PathNameBuffer);
- return Status;
+ IO_STATUS_BLOCK Iosb = {{0}};
+ OEM_STRING AnsiName;
+ CHAR AnsiNameBuf[512];
+ PFCB Fcb;
+ NTSTATUS Status;
+ FF_FILE *FileHandle;
+
+ /* Only open is permitted */
+ if (CreateDisposition != FILE_OPEN &&
+ CreateDisposition != FILE_OPEN_IF)
+ {
+ Iosb.Status = STATUS_OBJECT_NAME_COLLISION;
+ return Iosb;
+ }
+
+ // TODO: Check dir access
+
+ /* Convert the name to ANSI */
+ AnsiName.Buffer = AnsiNameBuf;
+ AnsiName.Length = 0;
+ AnsiName.MaximumLength = sizeof(AnsiNameBuf);
+ RtlZeroMemory(AnsiNameBuf, sizeof(AnsiNameBuf));
+ Status = RtlUpcaseUnicodeStringToCountedOemString(&AnsiName, &FileObject->FileName, FALSE);
+ if (!NT_SUCCESS(Status))
+ {
+ ASSERT(FALSE);
+ }
+
+ /* Open the dir with FullFAT */
+ FileHandle = FF_Open(Vcb->Ioman, AnsiName.Buffer, FF_MODE_DIR, NULL);
+
+ if (!FileHandle)
+ {
+ Iosb.Status = STATUS_OBJECT_NAME_NOT_FOUND; // FIXME: A shortcut for now
+ return Iosb;
+ }
+
+ /* Create a new DCB for this directory */
+ Fcb = FatCreateDcb(IrpContext, Vcb, ParentDcb, FileHandle);
+
+ /* Set share access */
+ IoSetShareAccess(*DesiredAccess, ShareAccess, FileObject, &Fcb->ShareAccess);
+
+ /* Set context and section object pointers */
+ FatSetFileObject(FileObject,
+ UserDirectoryOpen,
+ Fcb,
+ FatCreateCcb());
+
+ Iosb.Status = STATUS_SUCCESS;
+ Iosb.Information = FILE_OPENED;
+
+ DPRINT1("Successfully opened dir %s\n", AnsiNameBuf);
+
+ return Iosb;
}
-static
-NTSTATUS
-VfatOpenFile (
- PDEVICE_EXTENSION DeviceExt,
- PUNICODE_STRING PathNameU,
- PFILE_OBJECT FileObject,
- PVFATFCB* ParentFcb )
-/*
- * FUNCTION: Opens a file
- */
+IO_STATUS_BLOCK
+NTAPI
+FatiOpenExistingFile(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFILE_OBJECT FileObject,
+ IN PVCB Vcb,
+ IN PFCB ParentDcb,
+ IN PACCESS_MASK DesiredAccess,
+ IN USHORT ShareAccess,
+ IN ULONG AllocationSize,
+ IN PFILE_FULL_EA_INFORMATION EaBuffer,
+ IN ULONG EaLength,
+ IN UCHAR FileAttributes,
+ IN ULONG CreateDisposition,
+ IN BOOLEAN IsPagingFile,
+ IN BOOLEAN DeleteOnClose,
+ IN BOOLEAN IsDosName)
{
- PVFATFCB Fcb;
- NTSTATUS Status;
-
- DPRINT ("VfatOpenFile(%p, '%wZ', %p, %p)\n", DeviceExt, PathNameU, FileObject, ParentFcb);
-
- if (FileObject->RelatedFileObject)
- {
- DPRINT ("'%wZ'\n", &FileObject->RelatedFileObject->FileName);
-
- *ParentFcb = FileObject->RelatedFileObject->FsContext;
- (*ParentFcb)->RefCount++;
- }
- else
- {
- *ParentFcb = NULL;
- }
-
- if (!DeviceExt->FatInfo.FixedMedia)
- {
- Status = VfatBlockDeviceIoControl (DeviceExt->StorageDevice,
- IOCTL_DISK_CHECK_VERIFY,
- NULL,
- 0,
- NULL,
- 0,
- FALSE);
-
- if (Status == STATUS_VERIFY_REQUIRED)
-
- {
- PDEVICE_OBJECT DeviceToVerify;
-
- DPRINT ("Media change detected!\n");
- DPRINT ("Device %p\n", DeviceExt->StorageDevice);
-
- /* Find the device to verify and reset the thread field to empty value again. */
- DeviceToVerify = IoGetDeviceToVerify (PsGetCurrentThread ());
- IoSetDeviceToVerify (PsGetCurrentThread (), NULL);
- Status = IoVerifyVolume (DeviceToVerify,
- FALSE);
- }
- if (!NT_SUCCESS(Status))
- {
- DPRINT ("Status %lx\n", Status);
- *ParentFcb = NULL;
- return Status;
- }
- }
-
- if (*ParentFcb)
- {
- (*ParentFcb)->RefCount++;
- }
-
- /* try first to find an existing FCB in memory */
- DPRINT ("Checking for existing FCB in memory\n");
-
- Status = vfatGetFCBForFile (DeviceExt, ParentFcb, &Fcb, PathNameU);
- if (!NT_SUCCESS (Status))
- {
- DPRINT ("Could not make a new FCB, status: %x\n", Status);
- return Status;
- }
- if (Fcb->Flags & FCB_DELETE_PENDING)
- {
- vfatReleaseFCB (DeviceExt, Fcb);
- return STATUS_DELETE_PENDING;
- }
- DPRINT ("Attaching FCB to fileObject\n");
- Status = vfatAttachFCBToFileObject (DeviceExt, Fcb, FileObject);
- if (!NT_SUCCESS(Status))
- {
- vfatReleaseFCB (DeviceExt, Fcb);
- }
- return Status;
+ IO_STATUS_BLOCK Iosb = {{0}};
+ OEM_STRING AnsiName;
+ CHAR AnsiNameBuf[512];
+ PFCB Fcb;
+ NTSTATUS Status;
+ FF_FILE *FileHandle;
+
+ /* Check for create file option and fail */
+ if (CreateDisposition == FILE_CREATE)
+ {
+ Iosb.Status = STATUS_OBJECT_NAME_COLLISION;
+ return Iosb;
+ }
+
+ // TODO: Check more params
+
+ /* Convert the name to ANSI */
+ AnsiName.Buffer = AnsiNameBuf;
+ AnsiName.Length = 0;
+ AnsiName.MaximumLength = sizeof(AnsiNameBuf);
+ RtlZeroMemory(AnsiNameBuf, sizeof(AnsiNameBuf));
+ Status = RtlUpcaseUnicodeStringToCountedOemString(&AnsiName, &FileObject->FileName, FALSE);
+ if (!NT_SUCCESS(Status))
+ {
+ ASSERT(FALSE);
+ }
+
+ /* Open the file with FullFAT */
+ FileHandle = FF_Open(Vcb->Ioman, AnsiName.Buffer, FF_MODE_READ, NULL);
+
+ if (!FileHandle)
+ {
+ Iosb.Status = STATUS_OBJECT_NAME_NOT_FOUND; // FIXME: A shortcut for now
+ return Iosb;
+ }
+
+ /* Create a new FCB for this file */
+ Fcb = FatCreateFcb(IrpContext, Vcb, ParentDcb, FileHandle);
+
+ // TODO: Check if overwrite is needed
+
+ // This is usual file open branch, without overwriting!
+ /* Set context and section object pointers */
+ FatSetFileObject(FileObject,
+ UserFileOpen,
+ Fcb,
+ FatCreateCcb());
+ FileObject->SectionObjectPointer = &Fcb->SectionObjectPointers;
+
+ Iosb.Status = STATUS_SUCCESS;
+ Iosb.Information = FILE_OPENED;
+
+ return Iosb;
}
-static NTSTATUS
-VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp )
-/*
- * FUNCTION: Create or open a file
- */
+IO_STATUS_BLOCK
+NTAPI
+FatiOpenVolume(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PFILE_OBJECT FileObject,
+ IN PVCB Vcb,
+ IN PACCESS_MASK DesiredAccess,
+ IN USHORT ShareAccess,
+ IN ULONG CreateDisposition)
{
- PIO_STACK_LOCATION Stack;
- PFILE_OBJECT FileObject;
- NTSTATUS Status = STATUS_SUCCESS;
- PDEVICE_EXTENSION DeviceExt;
- ULONG RequestedDisposition, RequestedOptions;
- PVFATCCB pCcb;
- PVFATFCB pFcb = NULL;
- PVFATFCB ParentFcb = NULL;
- PWCHAR c, last;
- BOOLEAN PagingFileCreate = FALSE;
- BOOLEAN Dots;
- UNICODE_STRING FileNameU;
- UNICODE_STRING PathNameU;
-
- /* Unpack the various parameters. */
- Stack = IoGetCurrentIrpStackLocation (Irp);
- RequestedDisposition = ((Stack->Parameters.Create.Options >> 24) & 0xff);
- RequestedOptions =
- Stack->Parameters.Create.Options & FILE_VALID_OPTION_FLAGS;
- PagingFileCreate = (Stack->Flags & SL_OPEN_PAGING_FILE) ? TRUE : FALSE;
- FileObject = Stack->FileObject;
- DeviceExt = DeviceObject->DeviceExtension;
-
- /* Check their validity. */
- if (RequestedOptions & FILE_DIRECTORY_FILE &&
- RequestedDisposition == FILE_SUPERSEDE)
- {
- return(STATUS_INVALID_PARAMETER);
- }
-
- if (RequestedOptions & FILE_DIRECTORY_FILE &&
- RequestedOptions & FILE_NON_DIRECTORY_FILE)
+ PCCB Ccb;
+ IO_STATUS_BLOCK Iosb = {{0}};
+ BOOLEAN VolumeFlushed = FALSE;
+
+ /* Check parameters */
+ if (CreateDisposition != FILE_OPEN &&
+ CreateDisposition != FILE_OPEN_IF)
+ {
+ /* Deny access */
+ Iosb.Status = STATUS_ACCESS_DENIED;
+ }
+
+ /* Check if it's exclusive open */
+ if (!FlagOn(ShareAccess, FILE_SHARE_WRITE) &&
+ !FlagOn(ShareAccess, FILE_SHARE_DELETE))
+ {
+ // TODO: Check if exclusive read access requested
+ // and opened handles count is not 0
+ //if (!FlagOn(ShareAccess, FILE_SHARE_READ)
+
+ DPRINT1("Exclusive voume open\n");
+
+ // TODO: Flush the volume
+ VolumeFlushed = TRUE;
+ }
+ else if (FlagOn(*DesiredAccess, FILE_READ_DATA | FILE_WRITE_DATA | FILE_APPEND_DATA))
+ {
+ DPRINT1("Shared open\n");
+
+ // TODO: Flush the volume
+ VolumeFlushed = TRUE;
+ }
+
+ if (VolumeFlushed &&
+ !FlagOn(Vcb->State, VCB_STATE_MOUNTED_DIRTY) &&
+ FlagOn(Vcb->State, VCB_STATE_FLAG_DIRTY) &&
+ CcIsThereDirtyData(Vcb->Vpb))
+ {
+ UNIMPLEMENTED;
+ }
+
+ /* Set share access */
+ if (Vcb->DirectOpenCount > 0)
+ {
+ /* This volume has already been opened */
+ Iosb.Status = IoCheckShareAccess(*DesiredAccess,
+ ShareAccess,
+ FileObject,
+ &Vcb->ShareAccess,
+ TRUE);
+
+ if (!NT_SUCCESS(Iosb.Status))
{
- return(STATUS_INVALID_PARAMETER);
+ ASSERT(FALSE);
}
+ }
+ else
+ {
+ /* This is the first time open */
+ IoSetShareAccess(*DesiredAccess,
+ ShareAccess,
+ FileObject,
+ &Vcb->ShareAccess);
+ }
+
+ /* Set file object pointers */
+ Ccb = FatCreateCcb(IrpContext);
+ FatSetFileObject(FileObject, UserVolumeOpen, Vcb, Ccb);
+ FileObject->SectionObjectPointer = &Vcb->SectionObjectPointers;
+
+ /* Increase direct open count */
+ Vcb->DirectOpenCount++;
+ Vcb->OpenFileCount++;
+
+ /* Set no buffering flag */
+ FileObject->Flags |= FO_NO_INTERMEDIATE_BUFFERING;
+
+ // TODO: User's access check
+
+ Iosb.Status = STATUS_SUCCESS;
+ Iosb.Information = FILE_OPENED;
+
+ return Iosb;
+}
- /* This a open operation for the volume itself */
- if (FileObject->FileName.Length == 0 &&
- FileObject->RelatedFileObject == NULL)
- {
- if (RequestedDisposition == FILE_CREATE ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- RequestedDisposition == FILE_SUPERSEDE)
- {
- return(STATUS_ACCESS_DENIED);
- }
- if (RequestedOptions & FILE_DIRECTORY_FILE)
- {
- return(STATUS_NOT_A_DIRECTORY);
- }
- pFcb = DeviceExt->VolumeFcb;
- pCcb = ExAllocateFromNPagedLookasideList(&VfatGlobalData->CcbLookasideList);
- if (pCcb == NULL)
- {
- return (STATUS_INSUFFICIENT_RESOURCES);
- }
- RtlZeroMemory(pCcb, sizeof(VFATCCB));
- FileObject->SectionObjectPointer = &pFcb->SectionObjectPointers;
- FileObject->FsContext = pFcb;
- FileObject->FsContext2 = pCcb;
- pFcb->RefCount++;
-
- Irp->IoStatus.Information = FILE_OPENED;
- return(STATUS_SUCCESS);
- }
-
- /*
- * Check for illegal characters and illegale dot sequences in the file name
- */
- PathNameU = FileObject->FileName;
- c = PathNameU.Buffer + PathNameU.Length / sizeof(WCHAR);
- last = c - 1;
- Dots = TRUE;
- while (c-- > PathNameU.Buffer)
- {
- if (*c == L'\\' || c == PathNameU.Buffer)
- {
- if (Dots && last > c)
- {
- return(STATUS_OBJECT_NAME_INVALID);
- }
- last = c - 1;
- Dots = TRUE;
- }
- else if (*c != L'.')
- {
- Dots = FALSE;
- }
-
- if (*c != '\\' && vfatIsLongIllegal(*c))
- {
- return(STATUS_OBJECT_NAME_INVALID);
- }
- }
- if (FileObject->RelatedFileObject && PathNameU.Buffer[0] == L'\\')
+NTSTATUS
+NTAPI
+FatiCreate(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PIRP Irp)
+{
+ /* Boolean options */
+ BOOLEAN CreateDirectory;
+ BOOLEAN SequentialOnly;
+ BOOLEAN NoIntermediateBuffering;
+ BOOLEAN OpenDirectory;
+ BOOLEAN IsPagingFile;
+ BOOLEAN OpenTargetDirectory;
+ BOOLEAN DirectoryFile;
+ BOOLEAN NonDirectoryFile;
+ BOOLEAN NoEaKnowledge;
+ BOOLEAN DeleteOnClose;
+ BOOLEAN TemporaryFile;
+ ULONG CreateDisposition;
+
+ /* Control blocks */
+ PVCB Vcb, DecodedVcb, RelatedVcb;
+ PFCB Fcb, NextFcb, RelatedDcb;
+ PCCB Ccb, RelatedCcb;
+ PFCB ParentDcb;
+
+ /* IRP data */
+ PFILE_OBJECT FileObject;
+ PFILE_OBJECT RelatedFO;
+ UNICODE_STRING FileName;
+ ULONG AllocationSize;
+ PFILE_FULL_EA_INFORMATION EaBuffer;
+ PACCESS_MASK DesiredAccess;
+ ULONG Options;
+ UCHAR FileAttributes;
+ USHORT ShareAccess;
+ ULONG EaLength;
+
+ /* Misc */
+ NTSTATUS Status;
+ IO_STATUS_BLOCK Iosb;
+ PIO_STACK_LOCATION IrpSp;
+ BOOLEAN EndBackslash = FALSE, OpenedAsDos;
+ UNICODE_STRING RemainingPart, FirstName, NextName, FileNameUpcased;
+ OEM_STRING AnsiFirstName;
+ FF_ERROR FfError;
+ TYPE_OF_OPEN TypeOfOpen;
+ BOOLEAN OplockPostIrp = FALSE;
+
+ Iosb.Status = STATUS_SUCCESS;
+
+ /* Get current IRP stack location */
+ IrpSp = IoGetCurrentIrpStackLocation(Irp);
+
+ DPRINT("FatCommonCreate\n", 0 );
+ DPRINT("Irp = %08lx\n", Irp );
+ DPRINT("\t->Flags = %08lx\n", Irp->Flags );
+ DPRINT("\t->FileObject = %08lx\n", IrpSp->FileObject );
+ DPRINT("\t->RelatedFileObject = %08lx\n", IrpSp->FileObject->RelatedFileObject );
+ DPRINT("\t->FileName = %wZ\n", &IrpSp->FileObject->FileName );
+ DPRINT("\t->AllocationSize.LowPart = %08lx\n", Irp->Overlay.AllocationSize.LowPart );
+ DPRINT("\t->AllocationSize.HighPart = %08lx\n", Irp->Overlay.AllocationSize.HighPart );
+ DPRINT("\t->SystemBuffer = %08lx\n", Irp->AssociatedIrp.SystemBuffer );
+ DPRINT("\t->DesiredAccess = %08lx\n", IrpSp->Parameters.Create.SecurityContext->DesiredAccess );
+ DPRINT("\t->Options = %08lx\n", IrpSp->Parameters.Create.Options );
+ DPRINT("\t->FileAttributes = %04x\n", IrpSp->Parameters.Create.FileAttributes );
+ DPRINT("\t->ShareAccess = %04x\n", IrpSp->Parameters.Create.ShareAccess );
+ DPRINT("\t->EaLength = %08lx\n", IrpSp->Parameters.Create.EaLength );
+
+ /* Apply a special hack for Win32, idea taken from FASTFAT reference driver from WDK */
+ if ((IrpSp->FileObject->FileName.Length > sizeof(WCHAR)) &&
+ (IrpSp->FileObject->FileName.Buffer[1] == L'\\') &&
+ (IrpSp->FileObject->FileName.Buffer[0] == L'\\'))
+ {
+ /* Remove a leading slash */
+ IrpSp->FileObject->FileName.Length -= sizeof(WCHAR);
+ RtlMoveMemory(&IrpSp->FileObject->FileName.Buffer[0],
+ &IrpSp->FileObject->FileName.Buffer[1],
+ IrpSp->FileObject->FileName.Length );
+
+ /* Check again: if there are still two leading slashes,
+ exit with an error */
+ if ((IrpSp->FileObject->FileName.Length > sizeof(WCHAR)) &&
+ (IrpSp->FileObject->FileName.Buffer[1] == L'\\') &&
+ (IrpSp->FileObject->FileName.Buffer[0] == L'\\'))
+ {
+ FatCompleteRequest( IrpContext, Irp, STATUS_OBJECT_NAME_INVALID );
+
+ DPRINT1("FatiCreate: STATUS_OBJECT_NAME_INVALID\n");
+ return STATUS_OBJECT_NAME_INVALID;
+ }
+ }
+
+ /* Make sure we have SecurityContext */
+ ASSERT(IrpSp->Parameters.Create.SecurityContext != NULL);
+
+ /* Get necessary data out of IRP */
+ FileObject = IrpSp->FileObject;
+ FileName = FileObject->FileName;
+ RelatedFO = FileObject->RelatedFileObject;
+ AllocationSize = Irp->Overlay.AllocationSize.LowPart;
+ EaBuffer = Irp->AssociatedIrp.SystemBuffer;
+ DesiredAccess = &IrpSp->Parameters.Create.SecurityContext->DesiredAccess;
+ Options = IrpSp->Parameters.Create.Options;
+ FileAttributes = (UCHAR)(IrpSp->Parameters.Create.FileAttributes & ~FILE_ATTRIBUTE_NORMAL);
+ ShareAccess = IrpSp->Parameters.Create.ShareAccess;
+ EaLength = IrpSp->Parameters.Create.EaLength;
+
+ /* Set VPB to related object's VPB if it exists */
+ if (RelatedFO)
+ FileObject->Vpb = RelatedFO->Vpb;
+
+ /* Prepare file attributes mask */
+ FileAttributes &= (FILE_ATTRIBUTE_READONLY |
+ FILE_ATTRIBUTE_HIDDEN |
+ FILE_ATTRIBUTE_SYSTEM |
+ FILE_ATTRIBUTE_ARCHIVE);
+
+ /* Get the volume control object */
+ Vcb = &((PVOLUME_DEVICE_OBJECT)IrpSp->DeviceObject)->Vcb;
+
+ /* Get options */
+ DirectoryFile = BooleanFlagOn(Options, FILE_DIRECTORY_FILE);
+ NonDirectoryFile = BooleanFlagOn(Options, FILE_NON_DIRECTORY_FILE);
+ SequentialOnly = BooleanFlagOn(Options, FILE_SEQUENTIAL_ONLY);
+ NoIntermediateBuffering = BooleanFlagOn(Options, FILE_NO_INTERMEDIATE_BUFFERING);
+ NoEaKnowledge = BooleanFlagOn(Options, FILE_NO_EA_KNOWLEDGE);
+ DeleteOnClose = BooleanFlagOn(Options, FILE_DELETE_ON_CLOSE);
+ TemporaryFile = BooleanFlagOn(IrpSp->Parameters.Create.FileAttributes,
+ FILE_ATTRIBUTE_TEMPORARY );
+ IsPagingFile = BooleanFlagOn(IrpSp->Flags, SL_OPEN_PAGING_FILE);
+ OpenTargetDirectory = BooleanFlagOn(IrpSp->Flags, SL_OPEN_TARGET_DIRECTORY);
+
+ /* Calculate create disposition */
+ CreateDisposition = (Options >> 24) & 0x000000ff;
+
+ /* Get Create/Open directory flags based on it */
+ CreateDirectory = (BOOLEAN)(DirectoryFile &&
+ ((CreateDisposition == FILE_CREATE) ||
+ (CreateDisposition == FILE_OPEN_IF)));
+
+ OpenDirectory = (BOOLEAN)(DirectoryFile &&
+ ((CreateDisposition == FILE_OPEN) ||
+ (CreateDisposition == FILE_OPEN_IF)));
+
+ /* Validate parameters: directory/nondirectory mismatch and
+ AllocationSize being more than 4GB */
+ if ((DirectoryFile && NonDirectoryFile) ||
+ Irp->Overlay.AllocationSize.HighPart != 0)
+ {
+ FatCompleteRequest(IrpContext, Irp, STATUS_INVALID_PARAMETER);
+
+ DPRINT1("FatiCreate: STATUS_INVALID_PARAMETER\n", 0);
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* Acquire the VCB lock exclusively */
+ if (!FatAcquireExclusiveVcb(IrpContext, Vcb))
+ {
+ // TODO: Postpone the IRP for later processing
+ ASSERT(FALSE);
+ return STATUS_NOT_IMPLEMENTED;
+ }
+
+ // TODO: Verify the VCB
+
+ /* If VCB is locked, then no file openings are possible */
+ if (Vcb->State & VCB_STATE_FLAG_LOCKED)
+ {
+ DPRINT1("This volume is locked\n");
+ Status = STATUS_ACCESS_DENIED;
+
+ /* Cleanup and return */
+ FatReleaseVcb(IrpContext, Vcb);
+ return Status;
+ }
+
+ // TODO: Check if the volume is write protected and disallow DELETE_ON_CLOSE
+
+ // TODO: Make sure EAs aren't supported on FAT32
+
+ /* Check if it's a volume open request */
+ if (FileName.Length == 0)
+ {
+ /* Test related FO to be sure */
+ if (!RelatedFO ||
+ FatDecodeFileObject(RelatedFO, &DecodedVcb, &Fcb, &Ccb) == UserVolumeOpen)
{
- return(STATUS_OBJECT_NAME_INVALID);
+ /* Check parameters */
+ if (DirectoryFile || OpenTargetDirectory)
+ {
+ Status = DirectoryFile ? STATUS_NOT_A_DIRECTORY : STATUS_INVALID_PARAMETER;
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request and return */
+ FatCompleteRequest(IrpContext, Irp, Status);
+ return Status;
+ }
+
+ /* It is indeed a volume open request */
+ Iosb = FatiOpenVolume(IrpContext,
+ FileObject,
+ Vcb,
+ DesiredAccess,
+ ShareAccess,
+ CreateDisposition);
+
+ /* Set resulting information */
+ Irp->IoStatus.Information = Iosb.Information;
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request and return */
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+ return Iosb.Status;
}
- if (PathNameU.Length > sizeof(WCHAR) && PathNameU.Buffer[PathNameU.Length/sizeof(WCHAR)-1] == L'\\')
+ }
+
+ /* Check if this is a relative open */
+ if (RelatedFO)
+ {
+ /* Decode the file object */
+ TypeOfOpen = FatDecodeFileObject(RelatedFO,
+ &RelatedVcb,
+ &RelatedDcb,
+ &RelatedCcb);
+
+ /* Check open type */
+ if (TypeOfOpen != UserFileOpen &&
+ TypeOfOpen != UserDirectoryOpen)
{
- PathNameU.Length -= sizeof(WCHAR);
+ DPRINT1("Invalid file object!\n");
+
+ /* Cleanup and return */
+ FatReleaseVcb(IrpContext, Vcb);
+ return STATUS_OBJECT_PATH_NOT_FOUND;
}
- /* Try opening the file. */
- Status = VfatOpenFile (DeviceExt, &PathNameU, FileObject, &ParentFcb);
-
- /*
- * If the directory containing the file to open doesn't exist then
- * fail immediately
- */
- if (Status == STATUS_OBJECT_PATH_NOT_FOUND ||
- Status == STATUS_INVALID_PARAMETER ||
- Status == STATUS_DELETE_PENDING)
- {
- if (ParentFcb)
- {
- vfatReleaseFCB (DeviceExt, ParentFcb);
- }
- return(Status);
- }
- if (!NT_SUCCESS(Status) && ParentFcb == NULL)
+ /* File path must be relative */
+ if (FileName.Length != 0 &&
+ FileName.Buffer[0] == L'\\')
{
- DPRINT1("VfatOpenFile faild for '%wZ', status %x\n", &PathNameU, Status);
- return Status;
+ /* The name is absolute, fail */
+ FatReleaseVcb(IrpContext, Vcb);
+ return STATUS_OBJECT_NAME_INVALID;
}
- /*
- * If the file open failed then create the required file
- */
- if (!NT_SUCCESS (Status))
- {
- if (RequestedDisposition == FILE_CREATE ||
- RequestedDisposition == FILE_OPEN_IF ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- RequestedDisposition == FILE_SUPERSEDE)
- {
- ULONG Attributes;
- Attributes = Stack->Parameters.Create.FileAttributes;
-
- vfatSplitPathName(&PathNameU, NULL, &FileNameU);
- Status = VfatAddEntry (DeviceExt, &FileNameU, &pFcb, ParentFcb, RequestedOptions,
- (UCHAR)(Attributes & FILE_ATTRIBUTE_VALID_FLAGS));
- vfatReleaseFCB (DeviceExt, ParentFcb);
- if (NT_SUCCESS (Status))
- {
- Status = vfatAttachFCBToFileObject (DeviceExt, pFcb, FileObject);
- if ( !NT_SUCCESS(Status) )
- {
- vfatReleaseFCB (DeviceExt, pFcb);
- return Status;
- }
-
- Irp->IoStatus.Information = FILE_CREATED;
- VfatSetAllocationSizeInformation(FileObject,
- pFcb,
- DeviceExt,
- &Irp->Overlay.AllocationSize);
- VfatSetExtendedAttributes(FileObject,
- Irp->AssociatedIrp.SystemBuffer,
- Stack->Parameters.Create.EaLength);
-
- if (PagingFileCreate)
- {
- pFcb->Flags |= FCB_IS_PAGE_FILE;
- }
- }
- else
- {
- return(Status);
- }
- }
- else
- {
- if (ParentFcb)
- {
- vfatReleaseFCB (DeviceExt, ParentFcb);
- }
- return(Status);
- }
- }
- else
- {
- if (ParentFcb)
- {
- vfatReleaseFCB (DeviceExt, ParentFcb);
- }
- /* Otherwise fail if the caller wanted to create a new file */
- if (RequestedDisposition == FILE_CREATE)
- {
- Irp->IoStatus.Information = FILE_EXISTS;
- VfatCloseFile (DeviceExt, FileObject);
- return(STATUS_OBJECT_NAME_COLLISION);
- }
-
- pFcb = FileObject->FsContext;
-
- if (pFcb->OpenHandleCount != 0)
- {
- Status = IoCheckShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess,
- FALSE);
- if (!NT_SUCCESS(Status))
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(Status);
- }
- }
-
- /*
- * Check the file has the requested attributes
- */
- if (RequestedOptions & FILE_NON_DIRECTORY_FILE &&
- *pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY)
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(STATUS_FILE_IS_A_DIRECTORY);
- }
- if (RequestedOptions & FILE_DIRECTORY_FILE &&
- !(*pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY))
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(STATUS_NOT_A_DIRECTORY);
- }
-#ifndef USE_ROS_CC_AND_FS
- if (!(*pFcb->Attributes & FILE_ATTRIBUTE_DIRECTORY))
- {
- if (Stack->Parameters.Create.SecurityContext->DesiredAccess & FILE_WRITE_DATA ||
- RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF)
- {
- if (!MmFlushImageSection(&pFcb->SectionObjectPointers, MmFlushForWrite))
- {
- DPRINT1("%wZ\n", &pFcb->PathNameU);
- DPRINT1("%d %d %d\n", Stack->Parameters.Create.SecurityContext->DesiredAccess & FILE_WRITE_DATA,
- RequestedDisposition == FILE_OVERWRITE, RequestedDisposition == FILE_OVERWRITE_IF);
- VfatCloseFile (DeviceExt, FileObject);
- return STATUS_SHARING_VIOLATION;
- }
- }
- }
-#endif
- if (PagingFileCreate)
- {
- /* FIXME:
- * Do more checking for page files. It is possible,
- * that the file was opened and closed previously
- * as a normal cached file. In this case, the cache
- * manager has referenced the fileobject and the fcb
- * is held in memory. Try to remove the fileobject
- * from cache manager and use the fcb.
- */
- if (pFcb->RefCount > 1)
- {
- if(!(pFcb->Flags & FCB_IS_PAGE_FILE))
- {
- VfatCloseFile(DeviceExt, FileObject);
- return(STATUS_INVALID_PARAMETER);
- }
- }
- else
- {
- pFcb->Flags |= FCB_IS_PAGE_FILE;
- }
- }
- else
- {
- if (pFcb->Flags & FCB_IS_PAGE_FILE)
- {
- VfatCloseFile(DeviceExt, FileObject);
- return(STATUS_INVALID_PARAMETER);
- }
- }
-
-
- if (RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- RequestedDisposition == FILE_SUPERSEDE)
- {
- ExAcquireResourceExclusiveLite(&(pFcb->MainResource), TRUE);
- Status = VfatSetAllocationSizeInformation (FileObject,
- pFcb,
- DeviceExt,
- &Irp->Overlay.AllocationSize);
- ExReleaseResourceLite(&(pFcb->MainResource));
- if (!NT_SUCCESS (Status))
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(Status);
- }
- }
-
- if (RequestedDisposition == FILE_SUPERSEDE)
- {
- Irp->IoStatus.Information = FILE_SUPERSEDED;
- }
- else if (RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF)
- {
- Irp->IoStatus.Information = FILE_OVERWRITTEN;
- }
- else
- {
- Irp->IoStatus.Information = FILE_OPENED;
- }
- }
-
- if (pFcb->OpenHandleCount == 0)
- {
- IoSetShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess);
- }
- else
- {
- IoUpdateShareAccess(
- FileObject,
- &pFcb->FCBShareAccess
- );
-
- }
-
- pFcb->OpenHandleCount++;
-
- /* FIXME : test write access if requested */
-
- return(Status);
-}
+ /* Make sure volume is the same */
+ ASSERT(RelatedVcb == Vcb);
+
+ /* Save VPB */
+ FileObject->Vpb = RelatedFO->Vpb;
+ /* Set parent DCB */
+ ParentDcb = RelatedDcb;
+
+ DPRINT1("Opening file '%wZ' relatively to '%wZ'\n", &FileName, &ParentDcb->FullFileName);
+ }
+ else
+ {
+ /* Absolute open */
+ if ((FileName.Length == sizeof(WCHAR)) &&
+ (FileName.Buffer[0] == L'\\'))
+ {
+ /* Check if it's ok to open it */
+ if (NonDirectoryFile)
+ {
+ DPRINT1("Trying to open root dir as a file\n");
+
+ /* Cleanup and return */
+ FatReleaseVcb(IrpContext, Vcb);
+ return STATUS_FILE_IS_A_DIRECTORY;
+ }
+
+ /* Check delete on close on a root dir */
+ if (DeleteOnClose)
+ {
+ /* Cleanup and return */
+ FatReleaseVcb(IrpContext, Vcb);
+ return STATUS_CANNOT_DELETE;
+ }
+
+ /* Call root directory open routine */
+ Iosb = FatiOpenRootDcb(IrpContext,
+ FileObject,
+ Vcb,
+ DesiredAccess,
+ ShareAccess,
+ CreateDisposition);
+
+ Irp->IoStatus.Information = Iosb.Information;
+
+ /* Cleanup and return */
+ FatReleaseVcb(IrpContext, Vcb);
+ return Iosb.Status;
+ }
+ else
+ {
+ /* Not a root dir */
+ ParentDcb = Vcb->RootDcb;
+ DPRINT("ParentDcb %p\n", ParentDcb);
+ }
+ }
+
+ /* Check for backslash at the end */
+ if (FileName.Length &&
+ FileName.Buffer[FileName.Length / sizeof(WCHAR) - 1] == L'\\')
+ {
+ /* Cut it out */
+ FileName.Length -= sizeof(WCHAR);
+
+ /* Remember we cut it */
+ EndBackslash = TRUE;
+ }
+
+ /* Ensure the name is set */
+ if (!ParentDcb->FullFileName.Buffer)
+ {
+ /* Set it if it's missing */
+ FatSetFullFileNameInFcb(IrpContext, ParentDcb);
+ }
+
+ /* Check max path length */
+ if (ParentDcb->FullFileName.Length + FileName.Length + sizeof(WCHAR) <= FileName.Length)
+ {
+ DPRINT1("Max length is way off\n");
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ ASSERT(FALSE);
+ }
+
+ /* Loop through FCBs to find a good one */
+ while (TRUE)
+ {
+ Fcb = ParentDcb;
+
+ /* Dissect the name */
+ RemainingPart = FileName;
+ while (RemainingPart.Length)
+ {
+ FsRtlDissectName(RemainingPart, &FirstName, &NextName);
+
+ /* Check for validity */
+ if ((NextName.Length && NextName.Buffer[0] == L'\\') ||
+ (NextName.Length > 255 * sizeof(WCHAR)))
+ {
+ /* The name is invalid */
+ DPRINT1("Invalid name found\n");
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ ASSERT(FALSE);
+ }
+
+ /* Convert the name to ANSI */
+ AnsiFirstName.Buffer = ExAllocatePool(PagedPool, FirstName.Length);
+ AnsiFirstName.Length = 0;
+ AnsiFirstName.MaximumLength = FirstName.Length;
+ Status = RtlUpcaseUnicodeStringToCountedOemString(&AnsiFirstName, &FirstName, FALSE);
+
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("RtlUpcaseUnicodeStringToCountedOemString() failed with 0x%08x\n", Status);
+ ASSERT(FALSE);
+ NextFcb = NULL;
+ AnsiFirstName.Length = 0;
+ }
+ else
+ {
+ /* Find the coresponding FCB */
+ NextFcb = FatFindFcb(IrpContext,
+ &Fcb->Dcb.SplayLinksAnsi,
+ (PSTRING)&AnsiFirstName,
+ &OpenedAsDos);
+ }
+
+ /* If nothing found - try with unicode */
+ if (!NextFcb && Fcb->Dcb.SplayLinksUnicode)
+ {
+ FileNameUpcased.Buffer = FsRtlAllocatePool(PagedPool, FirstName.Length);
+ FileNameUpcased.Length = 0;
+ FileNameUpcased.MaximumLength = FirstName.Length;
+
+ /* Downcase and then upcase to normalize it */
+ Status = RtlDowncaseUnicodeString(&FileNameUpcased, &FirstName, FALSE);
+ Status = RtlUpcaseUnicodeString(&FileNameUpcased, &FileNameUpcased, FALSE);
+
+ /* Try to find FCB again using unicode name */
+ NextFcb = FatFindFcb(IrpContext,
+ &Fcb->Dcb.SplayLinksUnicode,
+ (PSTRING)&FileNameUpcased,
+ &OpenedAsDos);
+ }
+
+ /* Move to the next FCB */
+ if (NextFcb)
+ {
+ Fcb = NextFcb;
+ RemainingPart = NextName;
+ }
+
+ /* Break out of this loop if nothing can be found */
+ if (!NextFcb ||
+ NextName.Length == 0 ||
+ FatNodeType(NextFcb) == FAT_NTC_FCB)
+ {
+ break;
+ }
+ }
+
+ /* Ensure remaining name doesn't start from a backslash */
+ if (RemainingPart.Length &&
+ RemainingPart.Buffer[0] == L'\\')
+ {
+ /* Cut it */
+ RemainingPart.Buffer++;
+ RemainingPart.Length -= sizeof(WCHAR);
+ }
+
+ if (Fcb->Condition == FcbGood)
+ {
+ /* Good FCB, break out of the loop */
+ break;
+ }
+ else
+ {
+ ASSERT(FALSE);
+ }
+ }
+
+ /* We have a valid FCB now */
+ if (!RemainingPart.Length)
+ {
+ /* Check for target dir open */
+ if (OpenTargetDirectory)
+ {
+ DPRINT1("Opening target dir is missing\n");
+ ASSERT(FALSE);
+ }
+
+ /* Check this FCB's type */
+ if (FatNodeType(Fcb) == FAT_NTC_ROOT_DCB ||
+ FatNodeType(Fcb) == FAT_NTC_DCB)
+ {
+ /* Open a directory */
+ if (NonDirectoryFile)
+ {
+ /* Forbidden */
+ Iosb.Status = STATUS_FILE_IS_A_DIRECTORY;
+ ASSERT(FALSE);
+ return Iosb.Status;
+ }
+
+ /* Open existing DCB */
+ Iosb = FatiOpenExistingDcb(IrpContext,
+ FileObject,
+ Vcb,
+ Fcb,
+ DesiredAccess,
+ ShareAccess,
+ CreateDisposition,
+ NoEaKnowledge,
+ DeleteOnClose);
+
+ /* Save information */
+ Irp->IoStatus.Information = Iosb.Information;
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+
+ return Iosb.Status;
+ }
+ else if (FatNodeType(Fcb) == FAT_NTC_FCB)
+ {
+ /* Open a file */
+ if (OpenDirectory)
+ {
+ /* Forbidden */
+ Iosb.Status = STATUS_NOT_A_DIRECTORY;
+ ASSERT(FALSE);
+ return Iosb.Status;
+ }
+
+ /* Check for trailing backslash */
+ if (EndBackslash)
+ {
+ /* Forbidden */
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ ASSERT(FALSE);
+ return Iosb.Status;
+ }
+
+ Iosb = FatiOpenExistingFcb(IrpContext,
+ FileObject,
+ Vcb,
+ Fcb,
+ DesiredAccess,
+ ShareAccess,
+ AllocationSize,
+ EaBuffer,
+ EaLength,
+ FileAttributes,
+ CreateDisposition,
+ NoEaKnowledge,
+ DeleteOnClose,
+ OpenedAsDos,
+ &OplockPostIrp);
+
+ /* Check if it's pending */
+ if (Iosb.Status != STATUS_PENDING)
+ {
+ /* In case of success set cache supported flag */
+ if (NT_SUCCESS(Iosb.Status) && !NoIntermediateBuffering)
+ {
+ SetFlag(FileObject->Flags, FO_CACHE_SUPPORTED);
+ }
+
+ /* Save information */
+ Irp->IoStatus.Information = Iosb.Information;
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+
+ return Iosb.Status;
+ }
+ else
+ {
+ /* Queue this IRP */
+ UNIMPLEMENTED;
+ ASSERT(FALSE);
+ }
+ }
+ else
+ {
+ /* Unexpected FCB type */
+ KeBugCheckEx(/*FAT_FILE_SYSTEM*/0x23, __LINE__, (ULONG_PTR)Fcb, 0, 0);
+ }
+ }
+
+ /* During parsing we encountered a part which has no attached FCB/DCB.
+ Check that the parent is really DCB and not FCB */
+ if (FatNodeType(Fcb) != FAT_NTC_ROOT_DCB &&
+ FatNodeType(Fcb) != FAT_NTC_DCB)
+ {
+ DPRINT1("Weird FCB node type %x, expected DCB or root DCB\n", FatNodeType(Fcb));
+ ASSERT(FALSE);
+ }
+
+ /* Create additional DCBs for all path items */
+ ParentDcb = Fcb;
+ while (TRUE)
+ {
+ FsRtlDissectName(RemainingPart, &FirstName, &RemainingPart);
+
+ /* Check for validity */
+ if ((RemainingPart.Length && RemainingPart.Buffer[0] == L'\\') ||
+ (NextName.Length > 255 * sizeof(WCHAR)))
+ {
+ /* The name is invalid */
+ DPRINT1("Invalid name found\n");
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ ASSERT(FALSE);
+ }
+
+ /* Convert the name to ANSI */
+ AnsiFirstName.Buffer = ExAllocatePool(PagedPool, FirstName.Length);
+ AnsiFirstName.Length = 0;
+ AnsiFirstName.MaximumLength = FirstName.Length;
+ Status = RtlUpcaseUnicodeStringToCountedOemString(&AnsiFirstName, &FirstName, FALSE);
+
+ if (!NT_SUCCESS(Status))
+ {
+ ASSERT(FALSE);
+ }
+
+ DPRINT("FirstName %wZ, RemainingPart %wZ\n", &FirstName, &RemainingPart);
+
+ /* Break if came to the end */
+ if (!RemainingPart.Length) break;
+
+ /* Create a DCB for this entry */
+ ParentDcb = FatCreateDcb(IrpContext,
+ Vcb,
+ ParentDcb,
+ NULL);
+
+ /* Set its name */
+ FatSetFullNameInFcb(ParentDcb, &FirstName);
+ }
+
+ /* Try to open it and get a result, saying if this is a dir or a file */
+ FfError = FatiTryToOpen(FileObject, Vcb);
+
+ /* Check if we need to open target directory */
+ if (OpenTargetDirectory)
+ {
+ // TODO: Open target directory
+ UNIMPLEMENTED;
+ }
+
+ /* Check, if path is a directory or a file */
+ if (FfError == FF_ERR_FILE_OBJECT_IS_A_DIR)
+ {
+ if (NonDirectoryFile)
+ {
+ DPRINT1("Can't open dir as a file\n");
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ Iosb.Status = STATUS_FILE_IS_A_DIRECTORY;
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+ return Iosb.Status;
+ }
+
+ /* Open this directory */
+ Iosb = FatiOpenExistingDir(IrpContext,
+ FileObject,
+ Vcb,
+ ParentDcb,
+ DesiredAccess,
+ ShareAccess,
+ AllocationSize,
+ EaBuffer,
+ EaLength,
+ FileAttributes,
+ CreateDisposition,
+ DeleteOnClose);
+
+ Irp->IoStatus.Information = Iosb.Information;
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+
+ return Iosb.Status;
+ }
+
+ /* If end backslash here, then it's definately not permitted,
+ since we're opening files here */
+ if (EndBackslash)
+ {
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ Iosb.Status = STATUS_OBJECT_NAME_INVALID;
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+ return Iosb.Status;
+ }
+
+ /* Try to open the file */
+ Iosb = FatiOpenExistingFile(IrpContext,
+ FileObject,
+ Vcb,
+ ParentDcb,
+ DesiredAccess,
+ ShareAccess,
+ AllocationSize,
+ EaBuffer,
+ EaLength,
+ FileAttributes,
+ CreateDisposition,
+ FALSE,
+ DeleteOnClose,
+ OpenedAsDos);
+
+ Irp->IoStatus.Information = Iosb.Information;
+
+ /* Unlock VCB */
+ FatReleaseVcb(IrpContext, Vcb);
+
+ /* Complete the request */
+ FatCompleteRequest(IrpContext, Irp, Iosb.Status);
+
+ return Iosb.Status;
+}
NTSTATUS
-VfatCreate (PVFAT_IRP_CONTEXT IrpContext)
-/*
- * FUNCTION: Create or open a file
- */
+NTAPI
+FatCreate(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
- NTSTATUS Status;
-
- ASSERT(IrpContext);
-
- if (IrpContext->DeviceObject == VfatGlobalData->DeviceObject)
- {
- /* DeviceObject represents FileSystem instead of logical volume */
- DPRINT ("FsdCreate called with file system\n");
- IrpContext->Irp->IoStatus.Information = FILE_OPENED;
- IrpContext->Irp->IoStatus.Status = STATUS_SUCCESS;
- IoCompleteRequest (IrpContext->Irp, IO_DISK_INCREMENT);
- VfatFreeIrpContext(IrpContext);
- return(STATUS_SUCCESS);
- }
-
- if (!(IrpContext->Flags & IRPCONTEXT_CANWAIT))
- {
- return(VfatQueueRequest (IrpContext));
- }
-
- IrpContext->Irp->IoStatus.Information = 0;
- ExAcquireResourceExclusiveLite (&IrpContext->DeviceExt->DirResource, TRUE);
- Status = VfatCreateFile (IrpContext->DeviceObject, IrpContext->Irp);
- ExReleaseResourceLite (&IrpContext->DeviceExt->DirResource);
-
- IrpContext->Irp->IoStatus.Status = Status;
- IoCompleteRequest (IrpContext->Irp,
- (CCHAR)(NT_SUCCESS(Status) ? IO_DISK_INCREMENT : IO_NO_INCREMENT));
- VfatFreeIrpContext(IrpContext);
- return(Status);
+ PFAT_IRP_CONTEXT IrpContext;
+ NTSTATUS Status;
+
+ /* If it's called with our Disk FS device object - it's always open */
+ // TODO: Add check for CDROM FS device object
+ if (DeviceObject == FatGlobalData.DiskDeviceObject)
+ {
+ /* Complete the request and return success */
+ Irp->IoStatus.Status = STATUS_SUCCESS;
+ Irp->IoStatus.Information = FILE_OPENED;
+
+ IoCompleteRequest(Irp, IO_DISK_INCREMENT);
+
+ return STATUS_SUCCESS;
+ }
+
+ /* Enter FsRtl critical region */
+ FsRtlEnterFileSystem();
+
+ /* Build an irp context */
+ IrpContext = FatBuildIrpContext(Irp, TRUE);
+
+ /* Call internal function */
+ Status = FatiCreate(IrpContext, Irp);
+
+ /* Leave FsRtl critical region */
+ FsRtlExitFileSystem();
+
+ return Status;
}
/* EOF */
projects / reactos.git / blobdiff