[ros-diffs] [fireball] 43207: [fastfat_new] - Create root DCB when mounting a volume.
fireball at svn.reactos.org
fireball at svn.reactos.org
Mon Sep 28 20:04:31 CEST 2009
Author: fireball
Date: Mon Sep 28 20:04:31 2009
New Revision: 43207
URL: http://svn.reactos.org/svn/reactos?rev=43207&view=rev
Log:
[fastfat_new]
- Create root DCB when mounting a volume.
Modified:
trunk/reactos/drivers/filesystems/fastfat_new/dir.c
trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h
trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h
trunk/reactos/drivers/filesystems/fastfat_new/fsctl.c
Modified: trunk/reactos/drivers/filesystems/fastfat_new/dir.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfat_new/dir.c?rev=43207&r1=43206&r2=43207&view=diff
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/dir.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/dir.c [iso-8859-1] Mon Sep 28 20:04:31 2009
@@ -21,4 +21,107 @@
return STATUS_NOT_IMPLEMENTED;
}
+VOID
+NTAPI
+FatCreateRootDcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb)
+{
+ PFCB Dcb;
+
+ /* Make sure it's not already created */
+ ASSERT(!Vcb->RootDcb);
+
+ /* Allocate the DCB */
+ Dcb = FsRtlAllocatePoolWithTag(NonPagedPool,
+ sizeof(FCB),
+ TAG_FCB);
+
+ /* Zero it */
+ RtlZeroMemory(Dcb, sizeof(FCB));
+
+ /* Assign it to the VCB */
+ Vcb->RootDcb = Dcb;
+
+ /* Set its header */
+ Dcb->Header.NodeTypeCode = FAT_NTC_ROOT_DCB;
+ Dcb->Header.NodeByteSize = sizeof(FCB);
+
+ /* FCB is in a good condition */
+ Dcb->Condition = FcbGood;
+
+ /* Initialize FCB's resource */
+ Dcb->Header.Resource = &Dcb->Resource;
+ ExInitializeResourceLite(&Dcb->Resource);
+
+ /* Initialize Paging Io resource*/
+ Dcb->Header.PagingIoResource = &Dcb->PagingIoResource;
+ ExInitializeResourceLite(&Dcb->PagingIoResource);
+
+ /* Initialize a list of parent DCBs*/
+ InitializeListHead(&Dcb->ParentDcbLinks);
+
+ /* Set VCB */
+ Dcb->Vcb = Vcb;
+
+ /* Initialize parent's DCB list */
+ InitializeListHead(&Dcb->Dcb.ParentDcbList);
+
+ /* Initialize the full file name */
+ Dcb->FullFileName.Buffer = L"\\";
+ Dcb->FullFileName.Length = 1 * sizeof(WCHAR);
+ Dcb->FullFileName.MaximumLength = 2 * sizeof(WCHAR);
+
+ Dcb->FileName.Name.Ansi.Buffer = "\\";
+ Dcb->FileName.Name.Ansi.Length = 1;
+ Dcb->FileName.Name.Ansi.MaximumLength = 2 * sizeof(CHAR);
+
+ /* Fill dirent attribute byte copy */
+ Dcb->DirentFatFlags = FILE_ATTRIBUTE_DIRECTORY;
+
+ /* Initialize advanced FCB header fields */
+ ExInitializeFastMutex(&Dcb->HeaderMutex);
+ FsRtlSetupAdvancedHeader(&Dcb->Header, &Dcb->HeaderMutex);
+
+ /* Initialize MCB */
+ FsRtlInitializeLargeMcb(&Dcb->Mcb, NonPagedPool);
+
+ /* Set up first cluster field depending on FAT type */
+ if (TRUE/*FatIsFat32(Vcb)*/)
+ {
+ /* First cluster is really the first cluster of this volume */
+ Dcb->FirstClusterOfFile = Vcb->Bpb.RootDirFirstCluster;
+
+ /* Calculate size of FAT32 root dir */
+ Dcb->Header.AllocationSize.LowPart = 0xFFFFFFFF;
+ //FatLookupFileAllocationSize(IrpContext, Dcb);
+ DPRINT1("Calculation of a size of a root dir is missing!\n");
+
+ Dcb->Header.FileSize.QuadPart = Dcb->Header.AllocationSize.QuadPart;
+ }
+ else
+ {
+#if 0
+ /* Add MCB entry */
+ FatAddMcbEntry(Vcb,
+ &Dcb->Mcb,
+ 0,
+ FatRootDirectoryLbo(&Vcb->Bpb),
+ FatRootDirectorySize(&Vcb->Bpb));
+
+ /* Set a real size of the root directory */
+ Dcb->Header.FileSize.QuadPart = FatRootDirectorySize(&Vcb->Bpb);
+ Dcb->Header.AllocationSize.QuadPart = Dcb->Header.FileSize.QuadPart;
+#endif
+ UNIMPLEMENTED;
+ }
+
+ /* Initialize free dirent bitmap */
+ RtlInitializeBitMap(&Dcb->Dcb.FreeBitmap, NULL, 0);
+
+ /* Fill the dirent bitmap */
+ DPRINT1("Filling the free dirent bitmap is missing\n");
+ //FatCheckFreeDirentBitmap( IrpContext, Dcb );
+}
+
+
/* EOF */
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h?rev=43207&r1=43206&r2=43207&view=diff
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h [iso-8859-1] Mon Sep 28 20:04:31 2009
@@ -71,6 +71,10 @@
NTSTATUS NTAPI
FatDirectoryControl(PDEVICE_OBJECT DeviceObject, PIRP Irp);
+
+VOID NTAPI
+FatCreateRootDcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb);
/* -------------------------------------------------------- create.c */
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h?rev=43207&r1=43206&r2=43207&view=diff
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h [iso-8859-1] Mon Sep 28 20:04:31 2009
@@ -215,9 +215,20 @@
typedef struct _FCB_NAME_LINK {
RTL_SPLAY_LINKS Links;
- UNICODE_STRING String;
+ union
+ {
+ OEM_STRING Ansi;
+ UNICODE_STRING String;
+ } Name;
UCHAR Type;
} FCB_NAME_LINK, *PFCB_NAME_LINK;
+
+typedef enum _FCB_CONDITION
+{
+ FcbGood,
+ FcbBad,
+ FcbNeedsToBeVerified
+} FCB_CONDITION;
typedef struct _FCB
{
@@ -228,35 +239,47 @@
* FCB into paged and non paged parts
* (as it is done in MS implementation
*/
- FAST_MUTEX HeaderMutex;
+ FAST_MUTEX HeaderMutex; // nonpaged!
SECTION_OBJECT_POINTERS SectionObjectPointers;
- ERESOURCE Resource;
- ERESOURCE PagingIoResource;
+ ERESOURCE Resource; // nonpaged!
+ ERESOURCE PagingIoResource; // nonpaged!
FILE_LOCK Lock;
+ /* First cluster in the fat allocation chain */
+ ULONG FirstClusterOfFile;
+ /* A list of all FCBs of that DCB */
+ LIST_ENTRY ParentDcbLinks;
/* Reference to the Parent Dcb*/
struct _FCB *ParentFcb;
/* Pointer to a Vcb */
PVCB Vcb;
+ /* Fcb state */
+ ULONG State;
+ /* Fcb condition */
+ FCB_CONDITION Condition;
/* Mcb mapping Vbo->Lbo */
LARGE_MCB Mcb;
ULONG FirstCluster;
/* Links into FCB Trie */
- FCB_NAME_LINK FileName[0x2];
+ FCB_NAME_LINK FileName;
/* Buffer for the short name */
WCHAR ShortNameBuffer[0xc];
/* Full file name */
UNICODE_STRING FullFileName;
+ /* A copy of fat attribute byte */
+ UCHAR DirentFatFlags;
/* File basic info */
FILE_BASIC_INFORMATION BasicInfo;
union
{
struct
{
+ /* A list of all FCBs/DCBs opened under this DCB */
+ LIST_ENTRY ParentDcbList;
/* Directory data stream (just handy to have it). */
PFILE_OBJECT StreamFileObject;
/* Bitmap to search for free dirents. */
- /* RTL_BITMAP Bitmap; */
+ RTL_BITMAP FreeBitmap;
PRTL_SPLAY_LINKS SplayLinks;
} Dcb;
};
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fsctl.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfat_new/fsctl.c?rev=43207&r1=43206&r2=43207&view=diff
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fsctl.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fsctl.c [iso-8859-1] Mon Sep 28 20:04:31 2009
@@ -124,6 +124,9 @@
Status = FatInitializeVcb(IrpContext, &VolumeDevice->Vcb, TargetDeviceObject, Vpb);
if (!NT_SUCCESS(Status)) goto FatMountVolumeCleanup;
+ /* Create root DCB for it */
+ FatCreateRootDcb(IrpContext, &VolumeDevice->Vcb);
+
/* Keep trace of media changes */
VolumeDevice->Vcb.MediaChangeCount = MediaChangeCount;
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