* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/* $Id: create.c,v 1.47 2002/10/01 19:27:17 chorns Exp $
- *
+/*
* PROJECT: ReactOS kernel
- * FILE: services/fs/vfat/create.c
+ * FILE: drivers/fs/vfat/create.c
* PURPOSE: VFAT Filesystem
* PROGRAMMER: Jason Filby (jasonfilby@yahoo.com)
-
+ * Hartmut Birr
*/
/* INCLUDES *****************************************************************/
-#include <ddk/ntddk.h>
-#include <wchar.h>
-#include <limits.h>
-
#define NDEBUG
-#include <debug.h>
-
#include "vfat.h"
-/* GLOBALS *******************************************************************/
-
-#define ENTRIES_PER_PAGE (PAGE_SIZE / sizeof (FATDirEntry))
-
/* FUNCTIONS *****************************************************************/
-BOOLEAN
-IsLastEntry (PVOID Block, ULONG Offset)
-/*
- * FUNCTION: Determine if the given directory entry is the last
- */
+void
+vfat8Dot3ToString (PFAT_DIR_ENTRY pEntry, PUNICODE_STRING NameU)
{
- return (((FATDirEntry *) Block)[Offset].Filename[0] == 0);
-}
+ OEM_STRING StringA;
+ USHORT Length;
+ CHAR cString[12];
-BOOLEAN
-IsVolEntry (PVOID Block, ULONG Offset)
-/*
- * FUNCTION: Determine if the given directory entry is a vol entry
- */
-{
- if ((((FATDirEntry *) Block)[Offset].Attrib) == 0x28)
- return TRUE;
- else
- return FALSE;
-}
-
-BOOLEAN
-IsDeletedEntry (PVOID Block, ULONG Offset)
-/*
- * FUNCTION: Determines if the given entry is a deleted one
- */
-{
- /* Checks special character */
-
- return ((((FATDirEntry *) Block)[Offset].Filename[0] == 0xe5) ||
- (((FATDirEntry *) Block)[Offset].Filename[0] == 0));
-}
+ RtlCopyMemory(cString, pEntry->ShortName, 11);
+ cString[11] = 0;
+ if (cString[0] == 0x05)
+ {
+ cString[0] = 0xe5;
+ }
-void vfat8Dot3ToString (PCHAR pBasename, PCHAR pExtension, PWSTR pName)
-{
- int fromIndex, toIndex;
-
- fromIndex = toIndex = 0;
- while (fromIndex < 8 && pBasename [fromIndex] != ' ')
- {
- pName [toIndex++] = pBasename [fromIndex++];
- }
- if (pExtension [0] != ' ')
- {
- pName [toIndex++] = L'.';
- fromIndex = 0;
- while (fromIndex < 3 && pExtension [fromIndex] != ' ')
- {
- pName [toIndex++] = pExtension [fromIndex++];
- }
- }
- pName [toIndex] = L'\0';
-}
+ StringA.Buffer = cString;
+ for (StringA.Length = 0;
+ StringA.Length < 8 && StringA.Buffer[StringA.Length] != ' ';
+ StringA.Length++);
+ StringA.MaximumLength = StringA.Length;
-static void vfat8Dot3ToVolumeLabel (PCHAR pBasename, PCHAR pExtension, PWSTR pName)
-{
- int fromIndex, toIndex;
-
- fromIndex = toIndex = 0;
- while (fromIndex < 8 && pBasename [fromIndex] != ' ')
- {
- pName [toIndex++] = pBasename [fromIndex++];
- }
- if (pExtension [0] != ' ')
- {
- fromIndex = 0;
- while (fromIndex < 3 && pBasename [fromIndex] != ' ')
- {
- pName [toIndex++] = pExtension [fromIndex++];
- }
- }
- pName [toIndex] = L'\0';
-}
+ RtlOemStringToUnicodeString(NameU, &StringA, FALSE);
-NTSTATUS
-GetEntryName(PVOID *pContext,
- PVOID *Block,
- PFILE_OBJECT FileObject,
- PWSTR Name,
- PULONG pIndex,
- PULONG pIndex2)
-/*
- * FUNCTION: Retrieves the file name, be it in short or long file name format
- */
-{
- NTSTATUS Status;
- FATDirEntry * test;
- slot * test2;
- ULONG cpos;
- ULONG Offset = *pIndex % ENTRIES_PER_PAGE;
- ULONG Read;
- LARGE_INTEGER FileOffset;
-
- *Name = 0;
- while (TRUE)
- {
- test = (FATDirEntry *) *Block;
- test2 = (slot *) *Block;
- if (vfatIsDirEntryEndMarker(&test[Offset]))
- {
- return STATUS_NO_MORE_ENTRIES;
- }
- if (test2[Offset].attr == 0x0f && !vfatIsDirEntryDeleted(&test[Offset]))
- {
- *Name = 0;
- if (pIndex2)
- *pIndex2 = *pIndex; // start of dir entry
-
- DPRINT (" long name entry found at %d\n", *pIndex);
-
- DPRINT (" name chunk1:[%.*S] chunk2:[%.*S] chunk3:[%.*S]\n",
- 5, test2 [Offset].name0_4,
- 6, test2 [Offset].name5_10,
- 2, test2 [Offset].name11_12);
-
- vfat_initstr (Name, 255);
- vfat_wcsncpy (Name, test2[Offset].name0_4, 5);
- vfat_wcsncat (Name, test2[Offset].name5_10, 5, 6);
- vfat_wcsncat (Name, test2[Offset].name11_12, 11, 2);
-
- DPRINT (" longName: [%S]\n", Name);
- cpos = 0;
- while ((test2[Offset].id != 0x41) && (test2[Offset].id != 0x01) &&
- (test2[Offset].attr > 0))
- {
- (*pIndex)++;
- Offset++;
-
- if (Offset == ENTRIES_PER_PAGE)
- {
- Offset = 0;
- CcUnpinData(*pContext);
- FileOffset.QuadPart = *pIndex * sizeof(FATDirEntry);
- if(!CcMapData(FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, Block))
- {
- *pContext = NULL;
- return STATUS_NO_MORE_ENTRIES;
- }
- test2 = (slot *) *Block;
- }
- DPRINT (" long name entry found at %d\n", *pIndex);
-
- DPRINT (" name chunk1:[%.*S] chunk2:[%.*S] chunk3:[%.*S]\n",
- 5, test2 [Offset].name0_4,
- 6, test2 [Offset].name5_10,
- 2, test2 [Offset].name11_12);
-
- cpos++;
- vfat_movstr (Name, 13, 0, cpos * 13);
- vfat_wcsncpy (Name, test2[Offset].name0_4, 5);
- vfat_wcsncat (Name, test2[Offset].name5_10, 5, 6);
- vfat_wcsncat (Name, test2[Offset].name11_12, 11, 2);
-
- DPRINT (" longName: [%S]\n", Name);
- }
- (*pIndex)++;
- Offset++;
- if (Offset == ENTRIES_PER_PAGE)
- {
- Offset = 0;
- CcUnpinData(*pContext);
- FileOffset.QuadPart = *pIndex * sizeof(FATDirEntry);
- if(!CcMapData(FileObject, &FileOffset, PAGE_SIZE, TRUE, pContext, Block))
- {
- *pContext = NULL;
- return STATUS_NO_MORE_ENTRIES;
- }
- test2 = (slot *) *Block;
- test = (FATDirEntry*) *Block;
- }
- }
- else
- {
- if (vfatIsDirEntryEndMarker(&test[Offset]))
- return STATUS_NO_MORE_ENTRIES;
- if (vfatIsDirEntryDeleted(&test[Offset]))
- return STATUS_UNSUCCESSFUL;
- if (*Name == 0)
- {
- vfat8Dot3ToString (test[Offset].Filename, test[Offset].Ext, Name);
- if (pIndex2)
- *pIndex2 = *pIndex;
- }
- break;
- }
- }
- return STATUS_SUCCESS;
+ 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);
}
NTSTATUS
* FUNCTION: Read the volume label
*/
{
- PVOID Context = NULL;
- ULONG Offset = 0;
- ULONG DirIndex = 0;
- FATDirEntry* Entry;
- PVFATFCB pFcb;
- LARGE_INTEGER FileOffset;
-
- *(Vpb->VolumeLabel) = 0;
- Vpb->VolumeLabelLength = 0;
-
- pFcb = vfatOpenRootFCB (DeviceExt);
-
- while (TRUE)
- {
- if (Context == NULL || Offset == ENTRIES_PER_PAGE)
- {
- if (Offset == ENTRIES_PER_PAGE)
- {
- Offset = 0;
- }
- if (Context)
- {
- CcUnpinData(Context);
- }
- FileOffset.u.HighPart = 0;
- FileOffset.u.LowPart = (DirIndex - Offset) * sizeof(FATDirEntry);
- if (!CcMapData(pFcb->FileObject, &FileOffset, PAGE_SIZE, TRUE, &Context, (PVOID*)&Entry))
- {
- Context = NULL;
- break;
- }
- }
- if (IsVolEntry(Entry, Offset))
- {
- /* copy volume label */
- vfat8Dot3ToVolumeLabel (Entry[Offset].Filename, Entry[Offset].Ext, Vpb->VolumeLabel);
- Vpb->VolumeLabelLength = wcslen (Vpb->VolumeLabel) * sizeof(WCHAR);
- break;
- }
- if (IsLastEntry(Entry, Offset))
- {
- break;
- }
- Offset++;
- DirIndex++;
- }
-
- if (Context)
- {
- CcUnpinData(Context);
- }
- vfatReleaseFCB (DeviceExt, pFcb);
-
- return STATUS_SUCCESS;
+ 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;
}
NTSTATUS
-FindFile (PDEVICE_EXTENSION DeviceExt,
- PVFATFCB Fcb,
- PVFATFCB Parent,
- PWSTR FileToFind,
- ULONG *pDirIndex,
- ULONG *pDirIndex2)
+FindFile (
+ PDEVICE_EXTENSION DeviceExt,
+ PVFATFCB Parent,
+ PUNICODE_STRING FileToFindU,
+ PVFAT_DIRENTRY_CONTEXT DirContext,
+ BOOLEAN First)
/*
* FUNCTION: Find a file
*/
{
- WCHAR name[256];
- WCHAR name2[14];
- char * block;
- WCHAR TempStr[2];
- NTSTATUS Status;
- ULONG len;
- ULONG DirIndex;
- ULONG Offset;
- ULONG FirstCluster;
- ULONG Read;
- BOOL isRoot;
- LARGE_INTEGER FileOffset;
- PVOID Context = NULL;
-
- DPRINT ("FindFile(Parent %x, FileToFind '%S', DirIndex: %d)\n", Parent, FileToFind, pDirIndex ? *pDirIndex : 0);
- DPRINT ("FindFile: old Pathname %x, old Objectname %x)\n",Fcb->PathName, Fcb->ObjectName);
-
- isRoot = FALSE;
- DirIndex = 0;
- if (wcslen (FileToFind) == 0)
- {
- CHECKPOINT;
- TempStr[0] = (WCHAR) '.';
- TempStr[1] = 0;
- FileToFind = (PWSTR)&TempStr;
- }
- if (Parent)
- {
- FirstCluster = vfatDirEntryGetFirstCluster(DeviceExt, &Parent->entry);
- if (DeviceExt->FatInfo.FatType == FAT32)
- {
- if (FirstCluster == DeviceExt->FatInfo.RootCluster)
- isRoot = TRUE;
- }
- else
- {
- if (FirstCluster == 1)
- isRoot = TRUE;
- }
- }
- else
- isRoot = TRUE;
- if (isRoot)
- {
- if (DeviceExt->FatInfo.FatType == FAT32)
- FirstCluster = DeviceExt->FatInfo.RootCluster;
- else
- FirstCluster = 1;
-
- if (FileToFind[0] == 0 || (FileToFind[0] == '\\' && FileToFind[1] == 0)
- || (FileToFind[0] == '.' && FileToFind[1] == 0))
+ 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 %x, FileToFind '%wZ', DirIndex: %d)\n",
+ Parent, FileToFindU, DirContext->DirIndex);
+ DPRINT ("FindFile: Path %wZ)\n",&Parent->PathNameU);
+
+ PathNameBufferLength = LONGNAME_MAX_LENGTH * sizeof(WCHAR);
+ PathNameBuffer = ExAllocatePool(NonPagedPool, PathNameBufferLength + sizeof(WCHAR));
+ if (!PathNameBuffer)
{
- /* it's root : complete essentials fields then return ok */
- CHECKPOINT;
- memset (Fcb, 0, sizeof (VFATFCB));
- memset (Fcb->entry.Filename, ' ', 11);
- CHECKPOINT;
- Fcb->PathName[0]='\\';
- Fcb->ObjectName = &Fcb->PathName[1];
- Fcb->entry.FileSize = DeviceExt->FatInfo.rootDirectorySectors * DeviceExt->FatInfo.BytesPerSector;
- Fcb->entry.Attrib = FILE_ATTRIBUTE_DIRECTORY;
- if (DeviceExt->FatInfo.FatType == FAT32)
- {
- Fcb->entry.FirstCluster = ((PUSHORT)FirstCluster)[0];
- Fcb->entry.FirstClusterHigh = ((PUSHORT)FirstCluster)[1];
- }
- else
- Fcb->entry.FirstCluster = 1;
- if (pDirIndex)
- *pDirIndex = 0;
- if (pDirIndex2)
- *pDirIndex2 = 0;
- DPRINT("FindFile: new Pathname %S, new Objectname %S)\n",Fcb->PathName, Fcb->ObjectName);
- return (STATUS_SUCCESS);
+ CHECKPOINT1;
+ return STATUS_INSUFFICIENT_RESOURCES;
}
- }
- else
- {
- DPRINT ("Parent->entry.FileSize %x\n", Parent->entry.FileSize);
- FirstCluster = vfatDirEntryGetFirstCluster (DeviceExt, &Parent->entry);
- }
- if (pDirIndex && (*pDirIndex))
- DirIndex = *pDirIndex;
-
- Offset = DirIndex % ENTRIES_PER_PAGE;
- while(TRUE)
- {
- if (Context == NULL || Offset == ENTRIES_PER_PAGE)
- {
- if (Offset == ENTRIES_PER_PAGE)
- Offset = 0;
- if (Context)
- {
- CcUnpinData(Context);
- }
- FileOffset.QuadPart = (DirIndex - Offset) * sizeof(FATDirEntry);
- if (!CcMapData(Parent->FileObject, &FileOffset, PAGE_SIZE, TRUE,
- &Context, (PVOID*)&block))
- {
- Context = NULL;
- break;
- }
- }
- if (vfatIsDirEntryVolume(&((FATDirEntry*)block)[Offset]))
- {
- Offset++;
- DirIndex++;
- continue;
- }
- Status = GetEntryName (&Context, (PVOID*)&block, Parent->FileObject, name,
- &DirIndex, pDirIndex2);
- if (Status == STATUS_NO_MORE_ENTRIES)
- break;
- Offset = DirIndex % ENTRIES_PER_PAGE;
- if (NT_SUCCESS(Status))
+
+ PathNameU.Buffer = PathNameBuffer;
+ PathNameU.Length = 0;
+ PathNameU.MaximumLength = PathNameBufferLength;
+
+ DirContext->LongNameU.Length = 0;
+ DirContext->ShortNameU.Length = 0;
+
+ WildCard = FsRtlDoesNameContainWildCards(FileToFindU);
+
+ if (WildCard == FALSE)
{
- vfat8Dot3ToString(((FATDirEntry *) block)[Offset].Filename,((FATDirEntry *) block)[Offset].Ext, name2);
- if (wstrcmpjoki (name, FileToFind) || wstrcmpjoki (name2, FileToFind))
- {
- if (Parent && Parent->PathName)
- {
- len = wcslen(Parent->PathName);
- CHECKPOINT;
- memcpy(Fcb->PathName, Parent->PathName, len*sizeof(WCHAR));
- Fcb->ObjectName=&Fcb->PathName[len];
- if (len != 1 || Fcb->PathName[0] != '\\')
- {
- Fcb->ObjectName[0] = '\\';
- Fcb->ObjectName = &Fcb->ObjectName[1];
- }
+ /* 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
+ {
+ CHECKPOINT1;
+ 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))
+ {
+ CHECKPOINT;
+ 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
{
- Fcb->ObjectName=Fcb->PathName;
- Fcb->ObjectName[0]='\\';
- Fcb->ObjectName=&Fcb->ObjectName[1];
+ Found = FsRtlAreNamesEqual(&DirContext->LongNameU, FileToFindU, TRUE, NULL) ||
+ FsRtlAreNamesEqual(&DirContext->ShortNameU, FileToFindU, TRUE, NULL);
}
- memcpy (&Fcb->entry, &((FATDirEntry *) block)[Offset],
- sizeof (FATDirEntry));
- vfat_wcsncpy (Fcb->ObjectName, name, MAX_PATH);
- if (pDirIndex)
- *pDirIndex = DirIndex;
- DPRINT("FindFile: new Pathname %S, new Objectname %S, DirIndex %d\n",Fcb->PathName, Fcb->ObjectName, DirIndex);
- if (Context)
- CcUnpinData(Context);
- return STATUS_SUCCESS;
- }
- }
- Offset++;
- DirIndex++;
- }
- if (pDirIndex)
- *pDirIndex = DirIndex;
- if (Context)
- CcUnpinData(Context);
- return (STATUS_UNSUCCESSFUL);
-}
+ 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++;
+ }
-NTSTATUS
-vfatMakeAbsoluteFilename (PFILE_OBJECT pFileObject,
- PWSTR pRelativeFileName,
- PWSTR *pAbsoluteFilename)
-{
- PWSTR rcName;
- PVFATFCB fcb;
- PVFATCCB ccb;
-
- DPRINT ("try related for %S\n", pRelativeFileName);
- ccb = pFileObject->FsContext2;
- assert (ccb);
- fcb = ccb->pFcb;
- assert (fcb);
-
- /* verify related object is a directory and target name
- don't start with \. */
- if (!(fcb->entry.Attrib & FILE_ATTRIBUTE_DIRECTORY)
- || (pRelativeFileName[0] == L'\\'))
- {
- return STATUS_INVALID_PARAMETER;
- }
-
- /* construct absolute path name */
- assert (wcslen (fcb->PathName) + 1 + wcslen (pRelativeFileName) + 1
- <= MAX_PATH);
- rcName = ExAllocatePool (NonPagedPool, MAX_PATH * sizeof(WCHAR));
- if (!rcName)
- {
- return STATUS_INSUFFICIENT_RESOURCES;
- }
- wcscpy (rcName, fcb->PathName);
- if (!vfatFCBIsRoot(fcb))
- wcscat (rcName, L"\\");
- wcscat (rcName, pRelativeFileName);
- *pAbsoluteFilename = rcName;
-
- return STATUS_SUCCESS;
+ if (Context)
+ {
+ CcUnpinData(Context);
+ }
+
+ RtlFreeUnicodeString(&FileToFindUpcase);
+ ExFreePool(PathNameBuffer);
+ return Status;
}
+static
NTSTATUS
-VfatOpenFile (PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
- PWSTR FileName)
+VfatOpenFile (
+ PDEVICE_EXTENSION DeviceExt,
+ PUNICODE_STRING PathNameU,
+ PFILE_OBJECT FileObject,
+ PVFATFCB* ParentFcb )
/*
* FUNCTION: Opens a file
*/
{
- PVFATFCB ParentFcb;
- PVFATFCB Fcb;
- NTSTATUS Status;
- PWSTR AbsFileName = NULL;
-
- DPRINT ("VfatOpenFile(%08lx, %08lx, %S)\n", DeviceExt, FileObject, FileName);
-
- if (FileObject->RelatedFileObject)
- {
- DPRINT ("Converting relative filename to absolute filename\n");
- Status = vfatMakeAbsoluteFilename (FileObject->RelatedFileObject,
- FileName,
- &AbsFileName);
- FileName = AbsFileName;
- if (!NT_SUCCESS(Status))
- {
- return Status;
- }
- }
-
- //FIXME: Get cannonical path name (remove .'s, ..'s and extra separators)
-
- DPRINT ("PathName to open: %S\n", FileName);
-
- /* try first to find an existing FCB in memory */
- DPRINT ("Checking for existing FCB in memory\n");
- Fcb = vfatGrabFCBFromTable (DeviceExt, FileName);
- if (Fcb == NULL)
- {
- DPRINT ("No existing FCB found, making a new one if file exists.\n");
- Status = vfatGetFCBForFile (DeviceExt, &ParentFcb, &Fcb, FileName);
- if (ParentFcb != NULL)
- {
- vfatReleaseFCB (DeviceExt, ParentFcb);
- }
- if (!NT_SUCCESS (Status))
- {
- DPRINT ("Could not make a new FCB, status: %x\n", Status);
-
- if (AbsFileName)
- ExFreePool (AbsFileName);
-
- return Status;
- }
- }
- if (Fcb->Flags & FCB_DELETE_PENDING)
- {
- vfatReleaseFCB (DeviceExt, Fcb);
- if (AbsFileName)
- ExFreePool (AbsFileName);
- return STATUS_DELETE_PENDING;
- }
- DPRINT ("Attaching FCB to fileObject\n");
- Status = vfatAttachFCBToFileObject (DeviceExt, Fcb, FileObject);
-
- if (AbsFileName)
- ExFreePool (AbsFileName);
-
- return Status;
-}
+ PVFATFCB Fcb;
+ NTSTATUS Status;
-VOID STATIC
-VfatPagingFileCreate(PDEVICE_EXTENSION DeviceExt, PVFATFCB Fcb)
-{
- ULONG CurrentCluster, NextCluster, i;
- NTSTATUS Status;
-
- Fcb->Flags |= FCB_IS_PAGE_FILE;
- Fcb->FatChainSize =
- ((Fcb->entry.FileSize + DeviceExt->FatInfo.BytesPerCluster - 1) /
- DeviceExt->FatInfo.BytesPerCluster);
- if (Fcb->FatChainSize)
- {
- Fcb->FatChain =
- ExAllocatePool(NonPagedPool, Fcb->FatChainSize * sizeof(ULONG));
- }
-
- if (DeviceExt->FatInfo.FatType == FAT32)
- {
- CurrentCluster = Fcb->entry.FirstCluster +
- Fcb->entry.FirstClusterHigh * 65536;
- }
- else
- {
- CurrentCluster = Fcb->entry.FirstCluster;
- }
-
- i = 0;
- if (Fcb->FatChainSize)
- {
- while (CurrentCluster != 0xffffffff)
+ DPRINT ("VfatOpenFile(%08lx, '%wZ', %08lx, %08lx)\n", DeviceExt, PathNameU, FileObject, ParentFcb);
+
+ if (FileObject->RelatedFileObject)
{
- Fcb->FatChain[i] = CurrentCluster;
- Status = GetNextCluster (DeviceExt, CurrentCluster,
- &NextCluster, FALSE);
- i++;
- CurrentCluster = NextCluster;
+ DPRINT ("'%wZ'\n", &FileObject->RelatedFileObject->FileName);
+
+ *ParentFcb = FileObject->RelatedFileObject->FsContext;
+ (*ParentFcb)->RefCount++;
+ }
+ else
+ {
+ *ParentFcb = NULL;
}
- }
-}
-VOID STATIC
-VfatSupersedeFile(PDEVICE_EXTENSION DeviceExt, PFILE_OBJECT FileObject,
- PVFATFCB Fcb)
-{
- ULONG Cluster, NextCluster;
- NTSTATUS Status;
-
- Fcb->entry.FileSize = 0;
- if (DeviceExt->FatInfo.FatType == FAT32)
- {
- Cluster = Fcb->entry.FirstCluster + Fcb->entry.FirstClusterHigh * 65536;
- }
- else
- {
- Cluster = Fcb->entry.FirstCluster;
- }
- Fcb->entry.FirstCluster = 0;
- Fcb->entry.FirstClusterHigh = 0;
- VfatUpdateEntry (DeviceExt, FileObject);
- if (Fcb->RFCB.FileSize.QuadPart > 0)
- {
- Fcb->RFCB.AllocationSize.QuadPart = 0;
- Fcb->RFCB.FileSize.QuadPart = 0;
- Fcb->RFCB.ValidDataLength.QuadPart = 0;
- CcSetFileSizes(FileObject, (PCC_FILE_SIZES)&Fcb->RFCB.AllocationSize);
- }
- while (Cluster != 0xffffffff && Cluster > 1)
- {
- Status = GetNextCluster (DeviceExt, Cluster, &NextCluster, FALSE);
- WriteCluster (DeviceExt, Cluster, 0);
- Cluster = NextCluster;
- }
+ 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);
+
+ DeviceToVerify = IoGetDeviceToVerify (PsGetCurrentThread ());
+
+ IoSetDeviceToVerify (PsGetCurrentThread (),
+ NULL);
+ Status = IoVerifyVolume (DeviceExt->StorageDevice,
+ 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;
}
-NTSTATUS
-VfatCreateFile (PDEVICE_OBJECT DeviceObject, PIRP Irp)
+static NTSTATUS
+VfatCreateFile ( PDEVICE_OBJECT DeviceObject, PIRP Irp )
/*
* FUNCTION: Create or open a file
*/
{
- PIO_STACK_LOCATION Stack;
- PFILE_OBJECT FileObject;
- NTSTATUS Status = STATUS_SUCCESS;
- PDEVICE_EXTENSION DeviceExt;
- ULONG RequestedDisposition, RequestedOptions;
- PVFATCCB pCcb;
- PVFATFCB pFcb;
- PWCHAR c;
- BOOLEAN PagingFileCreate = FALSE;
-
- /* 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);
- }
-
- /* 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)
+ PIO_STACK_LOCATION Stack;
+ PFILE_OBJECT FileObject;
+ NTSTATUS Status = STATUS_SUCCESS;
+ PDEVICE_EXTENSION DeviceExt;
+ ULONG RequestedDisposition, RequestedOptions;
+ PVFATCCB pCcb;
+ PVFATFCB pFcb = NULL;
+ PVFATFCB ParentFcb;
+ 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_ACCESS_DENIED);
+ return(STATUS_INVALID_PARAMETER);
}
- if (RequestedOptions & FILE_DIRECTORY_FILE)
+
+ if (RequestedOptions & FILE_DIRECTORY_FILE &&
+ RequestedOptions & FILE_NON_DIRECTORY_FILE)
+ {
+ return(STATUS_INVALID_PARAMETER);
+ }
+
+ /* This a open operation for the volume itself */
+ if (FileObject->FileName.Length == 0 &&
+ FileObject->RelatedFileObject == NULL)
{
- return(STATUS_NOT_A_DIRECTORY);
+ 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);
}
- pFcb = DeviceExt->VolumeFcb;
- pCcb = ExAllocatePoolWithTag (NonPagedPool, sizeof (VFATCCB), TAG_CCB);
- if (pCcb == NULL)
+
+ /*
+ * 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)
{
- return (STATUS_INSUFFICIENT_RESOURCES);
+ 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);
+ }
}
- memset(pCcb, 0, sizeof(VFATCCB));
- FileObject->Flags |= FO_FCB_IS_VALID;
- FileObject->SectionObjectPointers = &pFcb->SectionObjectPointers;
- FileObject->FsContext = (PVOID) &pFcb->RFCB;
- FileObject->FsContext2 = pCcb;
- pCcb->pFcb = pFcb;
- pCcb->PtrFileObject = FileObject;
- pFcb->pDevExt = DeviceExt;
- pFcb->RefCount++;
-
- Irp->IoStatus.Information = FILE_OPENED;
- return(STATUS_SUCCESS);
- }
-
- /*
- * Check for illegal characters in the file name
- */
- c = FileObject->FileName.Buffer;
- while (*c != 0)
- {
- if (*c == L'*' || *c == L'?' || (*c == L'\\' && c[1] == L'\\'))
+ if (FileObject->RelatedFileObject && PathNameU.Buffer[0] == L'\\')
+ {
+ return(STATUS_OBJECT_NAME_INVALID);
+ }
+ if (PathNameU.Length > sizeof(WCHAR) && PathNameU.Buffer[PathNameU.Length/sizeof(WCHAR)-1] == L'\\')
+ {
+ PathNameU.Length -= sizeof(WCHAR);
+ }
+
+ /* 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)
{
- return(STATUS_OBJECT_NAME_INVALID);
+ if (ParentFcb)
+ {
+ vfatReleaseFCB (DeviceExt, ParentFcb);
+ }
+ return(Status);
}
- c++;
- }
-
- /* Try opening the file. */
- Status = VfatOpenFile (DeviceExt, FileObject, FileObject->FileName.Buffer);
-
- /*
- * 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)
- {
- 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)
+
+ /*
+ * If the file open failed then create the required file
+ */
+ if (!NT_SUCCESS (Status))
{
- ULONG Attributes;
- Attributes = Stack->Parameters.Create.FileAttributes;
- Status = VfatAddEntry (DeviceExt, FileObject, RequestedOptions,
- Attributes & FILE_ATTRIBUTE_VALID_FLAGS);
- if (NT_SUCCESS (Status))
- {
- pCcb = FileObject->FsContext2;
- pFcb = pCcb->pFcb;
- Irp->IoStatus.Information = FILE_CREATED;
- VfatSetAllocationSizeInformation(FileObject,
- pFcb,
- DeviceExt,
- &Irp->Overlay.AllocationSize);
- VfatSetExtendedAttributes(FileObject,
+ 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);
- IoSetShareAccess(0 /*DesiredAccess*/,
- Stack->Parameters.Create.ShareAccess,
- FileObject,
- &pFcb->FCBShareAccess);
- }
- else
- {
- return(Status);
- }
- }
- else
- {
- return(Status);
+
+ if (PagingFileCreate)
+ {
+ pFcb->Flags |= FCB_IS_PAGE_FILE;
+ }
+ }
+ else
+ {
+ return(Status);
+ }
+ }
+ else
+ {
+ vfatReleaseFCB (DeviceExt, ParentFcb);
+ return(Status);
+ }
}
- }
- else
- {
- /* Otherwise fail if the caller wanted to create a new file */
- if (RequestedDisposition == FILE_CREATE)
+ else
{
- Irp->IoStatus.Information = FILE_EXISTS;
- return(STATUS_OBJECT_NAME_COLLISION);
- }
+ 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);
+ }
- pCcb = FileObject->FsContext2;
- pFcb = pCcb->pFcb;
+ pFcb = FileObject->FsContext;
- /*
- * Check the file has the requested attributes
- */
- if (RequestedOptions & FILE_NON_DIRECTORY_FILE &&
- pFcb->entry.Attrib & FILE_ATTRIBUTE_DIRECTORY)
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(STATUS_FILE_IS_A_DIRECTORY);
- }
- if (RequestedOptions & FILE_DIRECTORY_FILE &&
- !(pFcb->entry.Attrib & FILE_ATTRIBUTE_DIRECTORY))
- {
- VfatCloseFile (DeviceExt, FileObject);
- return(STATUS_NOT_A_DIRECTORY);
+ 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);
+ }
+
+ 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;
+ }
}
-
- /* Supersede the file */
- if (RequestedDisposition == FILE_SUPERSEDE)
+
+ if (pFcb->OpenHandleCount == 0)
{
- VfatSupersedeFile(DeviceExt, FileObject, pFcb);
- Irp->IoStatus.Information = FILE_SUPERSEDED;
+ IoSetShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
+ Stack->Parameters.Create.ShareAccess,
+ FileObject,
+ &pFcb->FCBShareAccess);
}
- else
+ else
{
- Irp->IoStatus.Information = FILE_OPENED;
+ IoUpdateShareAccess(
+ FileObject,
+ &pFcb->FCBShareAccess
+ );
+
}
- }
-
- /*
- * If this create was for a paging file then make sure all the
- * information needed to manipulate it is locked in memory.
- */
- if (PagingFileCreate)
- {
- VfatPagingFileCreate(DeviceExt, pFcb);
- }
-
- /* FIXME : test share access */
- /* FIXME : test write access if requested */
-
- return(Status);
+
+ pFcb->OpenHandleCount++;
+
+ /* FIXME : test write access if requested */
+
+ return(Status);
}
-NTSTATUS VfatCreate (PVFAT_IRP_CONTEXT IrpContext)
+NTSTATUS
+VfatCreate (PVFAT_IRP_CONTEXT IrpContext)
/*
* FUNCTION: Create or open a file
*/
{
- 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,
- NT_SUCCESS(Status) ? IO_DISK_INCREMENT : IO_NO_INCREMENT);
- VfatFreeIrpContext(IrpContext);
- return(Status);
+ 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);
}
/* EOF */
projects / reactos.git / blobdiff