+++ /dev/null
-/*
- * 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.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-/*
- * PROJECT: ReactOS kernel
- * FILE: drivers/filesystems/fastfat/create.c
- * PURPOSE: VFAT Filesystem
- * PROGRAMMER: Jason Filby (jasonfilby@yahoo.com)
- * Pierre Schweitzer (pierre@reactos.org)
- */
-
-/* INCLUDES *****************************************************************/
-
-#include "vfat.h"
-
-#define NDEBUG
-#include <debug.h>
-
-/* FUNCTIONS *****************************************************************/
-
-VOID
-vfat8Dot3ToString(
- PFAT_DIR_ENTRY pEntry,
- PUNICODE_STRING NameU)
-{
- 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 (BooleanFlagOn(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 (BooleanFlagOn(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);
-}
-
-/*
- * FUNCTION: Find a file
- */
-NTSTATUS
-FindFile(
- PDEVICE_EXTENSION DeviceExt,
- PVFATFCB Parent,
- PUNICODE_STRING FileToFindU,
- PVFAT_DIRENTRY_CONTEXT DirContext,
- BOOLEAN First)
-{
- PWCHAR PathNameBuffer;
- USHORT PathNameBufferLength;
- NTSTATUS Status;
- PVOID Context = NULL;
- PVOID Page;
- PVFATFCB rcFcb;
- BOOLEAN Found;
- UNICODE_STRING PathNameU;
- UNICODE_STRING FileToFindUpcase;
- BOOLEAN WildCard;
- BOOLEAN IsFatX = vfatVolumeIsFatX(DeviceExt);
-
- DPRINT("FindFile(Parent %p, FileToFind '%wZ', DirIndex: %u)\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 (IsFatX && !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 %u (%u)\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 = VfatGetNextDirEntry(DeviceExt, &Context, &Page, Parent, DirContext, First);
- First = FALSE;
- if (Status == STATUS_NO_MORE_ENTRIES)
- {
- break;
- }
- if (ENTRY_VOLUME(IsFatX, &DirContext->DirEntry))
- {
- DirContext->DirIndex++;
- continue;
- }
- if (DirContext->LongNameU.Length == 0 ||
- DirContext->ShortNameU.Length == 0)
- {
- DPRINT1("WARNING: File system corruption detected. You may need to run a disk repair utility.\n");
- if (VfatGlobalData->Flags & VFAT_BREAK_ON_CORRUPTION)
- {
- ASSERT(DirContext->LongNameU.Length != 0 &&
- DirContext->ShortNameU.Length != 0);
- }
- 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("%u\n", DirContext->LongNameU.Length);
- DPRINT("FindFile: new Name %wZ, DirIndex %u\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;
-}
-
-/*
- * FUNCTION: Opens a file
- */
-static
-NTSTATUS
-VfatOpenFile(
- PDEVICE_EXTENSION DeviceExt,
- PUNICODE_STRING PathNameU,
- PFILE_OBJECT FileObject,
- ULONG RequestedDisposition,
- ULONG RequestedOptions,
- PVFATFCB *ParentFcb)
-{
- 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;
- }
- else
- {
- *ParentFcb = NULL;
- }
-
- if (!DeviceExt->FatInfo.FixedMedia)
- {
- Status = VfatBlockDeviceIoControl(DeviceExt->StorageDevice,
- IOCTL_DISK_CHECK_VERIFY,
- NULL,
- 0,
- NULL,
- 0,
- FALSE);
- if (!NT_SUCCESS(Status))
- {
- DPRINT("Status %lx\n", Status);
- *ParentFcb = NULL;
- return Status;
- }
- }
-
- if (*ParentFcb)
- {
- vfatGrabFCB(DeviceExt, *ParentFcb);
- }
-
- /* 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;
- }
-
- /* Fail, if we try to overwrite an existing directory */
- if ((!BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE) && vfatFCBIsDirectory(Fcb)) &&
- (RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- RequestedDisposition == FILE_SUPERSEDE))
- {
- vfatReleaseFCB(DeviceExt, Fcb);
- return STATUS_OBJECT_NAME_COLLISION;
- }
-
- if (BooleanFlagOn(Fcb->Flags, FCB_DELETE_PENDING))
- {
- vfatReleaseFCB(DeviceExt, Fcb);
- return STATUS_DELETE_PENDING;
- }
-
- /* Fail, if we try to overwrite a read-only file */
- if (vfatFCBIsReadOnly(Fcb) &&
- (RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF))
- {
- vfatReleaseFCB(DeviceExt, Fcb);
- return STATUS_ACCESS_DENIED;
- }
-
- if (vfatFCBIsReadOnly(Fcb) &&
- (RequestedOptions & FILE_DELETE_ON_CLOSE))
- {
- vfatReleaseFCB(DeviceExt, Fcb);
- return STATUS_CANNOT_DELETE;
- }
-
- if ((vfatFCBIsRoot(Fcb) ||
- (Fcb->LongNameU.Length == sizeof(WCHAR) && Fcb->LongNameU.Buffer[0] == L'.') ||
- (Fcb->LongNameU.Length == 2 * sizeof(WCHAR) && Fcb->LongNameU.Buffer[0] == L'.' && Fcb->LongNameU.Buffer[1] == L'.')) &&
- BooleanFlagOn(RequestedOptions, FILE_DELETE_ON_CLOSE))
- {
- // we cannot delete a '.', '..' or the root directory
- vfatReleaseFCB(DeviceExt, Fcb);
- return STATUS_CANNOT_DELETE;
- }
-
- DPRINT("Attaching FCB to fileObject\n");
- Status = vfatAttachFCBToFileObject(DeviceExt, Fcb, FileObject);
- if (!NT_SUCCESS(Status))
- {
- vfatReleaseFCB(DeviceExt, Fcb);
- }
- return Status;
-}
-
-/*
- * FUNCTION: Create or open a file
- */
-static NTSTATUS
-VfatCreateFile(
- PDEVICE_OBJECT DeviceObject,
- PIRP Irp)
-{
- PIO_STACK_LOCATION Stack;
- PFILE_OBJECT FileObject;
- NTSTATUS Status = STATUS_SUCCESS;
- PDEVICE_EXTENSION DeviceExt;
- ULONG RequestedDisposition, RequestedOptions;
- PVFATFCB pFcb = NULL;
- PVFATFCB ParentFcb = NULL;
- PVFATCCB pCcb = NULL;
- PWCHAR c, last;
- BOOLEAN PagingFileCreate;
- BOOLEAN Dots;
- BOOLEAN OpenTargetDir;
- BOOLEAN TrailingBackslash;
- UNICODE_STRING FileNameU;
- UNICODE_STRING PathNameU;
- ULONG Attributes;
-
- /* Unpack the various parameters. */
- Stack = IoGetCurrentIrpStackLocation(Irp);
- RequestedDisposition = ((Stack->Parameters.Create.Options >> 24) & 0xff);
- RequestedOptions = Stack->Parameters.Create.Options & FILE_VALID_OPTION_FLAGS;
- PagingFileCreate = BooleanFlagOn(Stack->Flags, SL_OPEN_PAGING_FILE);
- OpenTargetDir = BooleanFlagOn(Stack->Flags, SL_OPEN_TARGET_DIRECTORY);
-
- FileObject = Stack->FileObject;
- DeviceExt = DeviceObject->DeviceExtension;
-
- if (BooleanFlagOn(Stack->Parameters.Create.Options, FILE_OPEN_BY_FILE_ID))
- {
- return STATUS_NOT_IMPLEMENTED;
- }
-
- /* Check their validity. */
- if (BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE) &&
- RequestedDisposition == FILE_SUPERSEDE)
- {
- return STATUS_INVALID_PARAMETER;
- }
-
- if (BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE) &&
- BooleanFlagOn(RequestedOptions, FILE_NON_DIRECTORY_FILE))
- {
- return STATUS_INVALID_PARAMETER;
- }
-
- /* Deny create if the volume is locked */
- if (BooleanFlagOn(DeviceExt->Flags, VCB_VOLUME_LOCKED))
- {
- return STATUS_ACCESS_DENIED;
- }
-
- /* This a open operation for the volume itself */
- if (FileObject->FileName.Length == 0 &&
- (FileObject->RelatedFileObject == NULL ||
- FileObject->RelatedFileObject->FsContext2 != NULL ||
- FileObject->RelatedFileObject->FsContext == DeviceExt->VolumeFcb))
- {
- DPRINT("Volume opening\n");
-
- if (RequestedDisposition != FILE_OPEN &&
- RequestedDisposition != FILE_OPEN_IF)
- {
- return STATUS_ACCESS_DENIED;
- }
-
- if (BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE) &&
- (FileObject->RelatedFileObject == NULL || FileObject->RelatedFileObject->FsContext2 == NULL || FileObject->RelatedFileObject->FsContext == DeviceExt->VolumeFcb))
- {
- return STATUS_NOT_A_DIRECTORY;
- }
-
- if (OpenTargetDir)
- {
- return STATUS_INVALID_PARAMETER;
- }
-
- if (BooleanFlagOn(RequestedOptions, FILE_DELETE_ON_CLOSE))
- {
- return STATUS_CANNOT_DELETE;
- }
-
- vfatAddToStat(DeviceExt, Fat.CreateHits, 1);
-
- pFcb = DeviceExt->VolumeFcb;
-
- if (pFcb->OpenHandleCount == 0)
- {
- IoSetShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess);
- }
- else
- {
- Status = IoCheckShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess,
- FALSE);
- if (!NT_SUCCESS(Status))
- {
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return Status;
- }
- }
-
- vfatAttachFCBToFileObject(DeviceExt, pFcb, FileObject);
- DeviceExt->OpenHandleCount++;
- pFcb->OpenHandleCount++;
- vfatAddToStat(DeviceExt, Fat.SuccessfulCreates, 1);
-
- Irp->IoStatus.Information = FILE_OPENED;
- return STATUS_SUCCESS;
- }
-
- if (FileObject->RelatedFileObject != NULL &&
- FileObject->RelatedFileObject->FsContext == DeviceExt->VolumeFcb)
- {
- ASSERT(FileObject->FileName.Length != 0);
- return STATUS_OBJECT_PATH_NOT_FOUND;
- }
-
- /* Check for illegal characters and illegal 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;
- }
- if (*c == L'\\' && (c - 1) > PathNameU.Buffer &&
- *(c - 1) == L'\\')
- {
- 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;
- }
- }
-
- /* Check if we try to open target directory of root dir */
- if (OpenTargetDir && FileObject->RelatedFileObject == NULL && PathNameU.Length == sizeof(WCHAR) &&
- PathNameU.Buffer[0] == L'\\')
- {
- return STATUS_INVALID_PARAMETER;
- }
-
- if (FileObject->RelatedFileObject && PathNameU.Length >= sizeof(WCHAR) && PathNameU.Buffer[0] == L'\\')
- {
- return STATUS_OBJECT_NAME_INVALID;
- }
-
- TrailingBackslash = FALSE;
- if (PathNameU.Length > sizeof(WCHAR) && PathNameU.Buffer[PathNameU.Length/sizeof(WCHAR)-1] == L'\\')
- {
- PathNameU.Length -= sizeof(WCHAR);
- TrailingBackslash = TRUE;
- }
-
- if (PathNameU.Length > sizeof(WCHAR) && PathNameU.Buffer[PathNameU.Length/sizeof(WCHAR)-1] == L'\\')
- {
- return STATUS_OBJECT_NAME_INVALID;
- }
-
- /* Try opening the file. */
- if (!OpenTargetDir)
- {
- vfatAddToStat(DeviceExt, Fat.CreateHits, 1);
-
- Status = VfatOpenFile(DeviceExt, &PathNameU, FileObject, RequestedDisposition, RequestedOptions, &ParentFcb);
- }
- else
- {
- PVFATFCB TargetFcb;
- LONG idx, FileNameLen;
-
- vfatAddToStat(DeviceExt, Fat.CreateHits, 1);
-
- ParentFcb = (FileObject->RelatedFileObject != NULL) ? FileObject->RelatedFileObject->FsContext : NULL;
- if (ParentFcb)
- {
- vfatGrabFCB(DeviceExt, ParentFcb);
- }
-
- Status = vfatGetFCBForFile(DeviceExt, &ParentFcb, &TargetFcb, &PathNameU);
- if (NT_SUCCESS(Status))
- {
- vfatReleaseFCB(DeviceExt, TargetFcb);
- Irp->IoStatus.Information = FILE_EXISTS;
- }
- else
- {
- Irp->IoStatus.Information = FILE_DOES_NOT_EXIST;
- }
-
- idx = FileObject->FileName.Length / sizeof(WCHAR) - 1;
-
- /* Skip trailing \ - if any */
- if (PathNameU.Buffer[idx] == L'\\')
- {
- --idx;
- PathNameU.Length -= sizeof(WCHAR);
- }
-
- /* Get file name */
- while (idx >= 0 && PathNameU.Buffer[idx] != L'\\')
- {
- --idx;
- }
-
- if (idx > 0 || PathNameU.Buffer[0] == L'\\')
- {
- /* We don't want to include / in the name */
- FileNameLen = PathNameU.Length - ((idx + 1) * sizeof(WCHAR));
-
- /* Update FO just to keep file name */
- /* Skip first slash */
- ++idx;
- FileObject->FileName.Length = FileNameLen;
- RtlMoveMemory(&PathNameU.Buffer[0], &PathNameU.Buffer[idx], FileObject->FileName.Length);
-#if 0
- /* Terminate the string at the last backslash */
- PathNameU.Buffer[idx + 1] = UNICODE_NULL;
- PathNameU.Length = (idx + 1) * sizeof(WCHAR);
- PathNameU.MaximumLength = PathNameU.Length + sizeof(WCHAR);
-
- /* Update the file object as well */
- FileObject->FileName.Length = PathNameU.Length;
- FileObject->FileName.MaximumLength = PathNameU.MaximumLength;
-#endif
- }
- else
- {
- /* This is a relative open and we have only the filename, so open the parent directory
- * It is in RelatedFileObject
- */
- ASSERT(FileObject->RelatedFileObject != NULL);
-
- /* No need to modify the FO, it already has the name */
- }
-
- /* We're done with opening! */
- if (ParentFcb != NULL)
- {
- Status = vfatAttachFCBToFileObject(DeviceExt, ParentFcb, FileObject);
- }
-
- if (NT_SUCCESS(Status))
- {
- pFcb = FileObject->FsContext;
- ASSERT(pFcb == ParentFcb);
-
- if (pFcb->OpenHandleCount == 0)
- {
- IoSetShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess);
- }
- else
- {
- Status = IoCheckShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess,
- FALSE);
- if (!NT_SUCCESS(Status))
- {
- VfatCloseFile(DeviceExt, FileObject);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return Status;
- }
- }
-
- pCcb = FileObject->FsContext2;
- if (BooleanFlagOn(RequestedOptions, FILE_DELETE_ON_CLOSE))
- {
- pCcb->Flags |= CCB_DELETE_ON_CLOSE;
- }
-
- pFcb->OpenHandleCount++;
- DeviceExt->OpenHandleCount++;
- }
- else if (ParentFcb != NULL)
- {
- vfatReleaseFCB(DeviceExt, ParentFcb);
- }
-
- if (NT_SUCCESS(Status))
- {
- vfatAddToStat(DeviceExt, Fat.SuccessfulCreates, 1);
- }
- else
- {
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- }
-
- return Status;
- }
-
- /*
- * 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 ||
- Status == STATUS_ACCESS_DENIED ||
- Status == STATUS_OBJECT_NAME_COLLISION)
- {
- if (ParentFcb)
- {
- vfatReleaseFCB(DeviceExt, ParentFcb);
- }
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return Status;
- }
-
- if (!NT_SUCCESS(Status) && ParentFcb == NULL)
- {
- DPRINT1("VfatOpenFile failed for '%wZ', status %x\n", &PathNameU, Status);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return Status;
- }
-
- /* 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)
- {
- Attributes = Stack->Parameters.Create.FileAttributes & ~FILE_ATTRIBUTE_NORMAL;
- if (!BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE))
- {
- if (TrailingBackslash)
- {
- vfatReleaseFCB(DeviceExt, ParentFcb);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return STATUS_OBJECT_NAME_INVALID;
- }
- Attributes |= FILE_ATTRIBUTE_ARCHIVE;
- }
- vfatSplitPathName(&PathNameU, NULL, &FileNameU);
- Status = VfatAddEntry(DeviceExt, &FileNameU, &pFcb, ParentFcb, RequestedOptions,
- (UCHAR)FlagOn(Attributes, FILE_ATTRIBUTE_VALID_FLAGS), NULL);
- vfatReleaseFCB(DeviceExt, ParentFcb);
- if (NT_SUCCESS(Status))
- {
- Status = vfatAttachFCBToFileObject(DeviceExt, pFcb, FileObject);
- if (!NT_SUCCESS(Status))
- {
- vfatReleaseFCB(DeviceExt, pFcb);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- 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
- {
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return Status;
- }
- }
- else
- {
- vfatReleaseFCB(DeviceExt, ParentFcb);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return Status;
- }
- }
- else
- {
- if (ParentFcb)
- {
- vfatReleaseFCB(DeviceExt, ParentFcb);
- }
-
- pFcb = FileObject->FsContext;
-
- /* Otherwise fail if the caller wanted to create a new file */
- if (RequestedDisposition == FILE_CREATE)
- {
- VfatCloseFile(DeviceExt, FileObject);
- if (TrailingBackslash && !vfatFCBIsDirectory(pFcb))
- {
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return STATUS_OBJECT_NAME_INVALID;
- }
- Irp->IoStatus.Information = FILE_EXISTS;
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return STATUS_OBJECT_NAME_COLLISION;
- }
-
- 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);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return Status;
- }
- }
-
- /*
- * Check the file has the requested attributes
- */
- if (BooleanFlagOn(RequestedOptions, FILE_NON_DIRECTORY_FILE) &&
- vfatFCBIsDirectory(pFcb))
- {
- VfatCloseFile (DeviceExt, FileObject);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return STATUS_FILE_IS_A_DIRECTORY;
- }
- if (BooleanFlagOn(RequestedOptions, FILE_DIRECTORY_FILE) &&
- !vfatFCBIsDirectory(pFcb))
- {
- VfatCloseFile (DeviceExt, FileObject);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return STATUS_NOT_A_DIRECTORY;
- }
- if (TrailingBackslash && !vfatFCBIsDirectory(pFcb))
- {
- VfatCloseFile (DeviceExt, FileObject);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return STATUS_OBJECT_NAME_INVALID;
- }
-#ifndef USE_ROS_CC_AND_FS
- if (!vfatFCBIsDirectory(pFcb))
- {
- if (BooleanFlagOn(Stack->Parameters.Create.SecurityContext->DesiredAccess, FILE_WRITE_DATA) ||
- RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- (RequestedOptions & FILE_DELETE_ON_CLOSE))
- {
- 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);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return (BooleanFlagOn(RequestedOptions, FILE_DELETE_ON_CLOSE)) ? STATUS_CANNOT_DELETE
- : 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(!BooleanFlagOn(pFcb->Flags, FCB_IS_PAGE_FILE))
- {
- VfatCloseFile(DeviceExt, FileObject);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return STATUS_INVALID_PARAMETER;
- }
- }
- else
- {
- pFcb->Flags |= FCB_IS_PAGE_FILE;
- }
- }
- else
- {
- if (BooleanFlagOn(pFcb->Flags, FCB_IS_PAGE_FILE))
- {
- VfatCloseFile(DeviceExt, FileObject);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- return STATUS_INVALID_PARAMETER;
- }
- }
-
- if (RequestedDisposition == FILE_OVERWRITE ||
- RequestedDisposition == FILE_OVERWRITE_IF ||
- RequestedDisposition == FILE_SUPERSEDE)
- {
- if (!vfatFCBIsDirectory(pFcb))
- {
- *pFcb->Attributes = Stack->Parameters.Create.FileAttributes & ~FILE_ATTRIBUTE_NORMAL;
- *pFcb->Attributes |= FILE_ATTRIBUTE_ARCHIVE;
- VfatUpdateEntry(pFcb, vfatVolumeIsFatX(DeviceExt));
- }
-
- ExAcquireResourceExclusiveLite(&(pFcb->MainResource), TRUE);
- Status = VfatSetAllocationSizeInformation(FileObject,
- pFcb,
- DeviceExt,
- &Irp->Overlay.AllocationSize);
- ExReleaseResourceLite(&(pFcb->MainResource));
- if (!NT_SUCCESS (Status))
- {
- VfatCloseFile(DeviceExt, FileObject);
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- 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);
- }
-
- pCcb = FileObject->FsContext2;
- if (BooleanFlagOn(RequestedOptions, FILE_DELETE_ON_CLOSE))
- {
- pCcb->Flags |= CCB_DELETE_ON_CLOSE;
- }
-
- if (Irp->IoStatus.Information == FILE_CREATED)
- {
- FsRtlNotifyFullReportChange(DeviceExt->NotifySync,
- &(DeviceExt->NotifyList),
- (PSTRING)&pFcb->PathNameU,
- pFcb->PathNameU.Length - pFcb->LongNameU.Length,
- NULL,
- NULL,
- (vfatFCBIsDirectory(pFcb) ?
- FILE_NOTIFY_CHANGE_DIR_NAME : FILE_NOTIFY_CHANGE_FILE_NAME),
- FILE_ACTION_ADDED,
- NULL);
- }
-
- pFcb->OpenHandleCount++;
- DeviceExt->OpenHandleCount++;
-
- /* FIXME : test write access if requested */
-
- if (NT_SUCCESS(Status))
- {
- vfatAddToStat(DeviceExt, Fat.SuccessfulCreates, 1);
- }
- else
- {
- vfatAddToStat(DeviceExt, Fat.FailedCreates, 1);
- }
-
- return Status;
-}
-
-/*
- * FUNCTION: Create or open a file
- */
-NTSTATUS
-VfatCreate(
- PVFAT_IRP_CONTEXT IrpContext)
-{
- 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->PriorityBoost = IO_DISK_INCREMENT;
-
- return STATUS_SUCCESS;
- }
-
- if (!BooleanFlagOn(IrpContext->Flags, IRPCONTEXT_CANWAIT))
- {
- return VfatMarkIrpContextForQueue(IrpContext);
- }
-
- IrpContext->Irp->IoStatus.Information = 0;
- ExAcquireResourceExclusiveLite(&IrpContext->DeviceExt->DirResource, TRUE);
- Status = VfatCreateFile(IrpContext->DeviceObject, IrpContext->Irp);
- ExReleaseResourceLite(&IrpContext->DeviceExt->DirResource);
-
- if (NT_SUCCESS(Status))
- IrpContext->PriorityBoost = IO_DISK_INCREMENT;
-
- return Status;
-}
-
-/* EOF */
projects / reactos.git / blobdiff