[fireball] 43239: [fastfat_new] - Partially implement a codepath for opening an existing file. - Implement simple FCB and CCB creation. - Correctly set FILE_OBJECT fields. - Allocate space for SECTION_POINTERS. - Implement some misc in FatQueryInformation. - The driver goes up to getting a read request for ntdll.dll.
30 Sep
2009
30 Sep
'09
4:16 p.m.
Author: fireball
Date: Wed Sep 30 18:16:18 2009
New Revision: 43239
URL: http://svn.reactos.org/svn/reactos?rev=43239&view=rev
Log:
[fastfat_new]
- Partially implement a codepath for opening an existing file.
- Implement simple FCB and CCB creation.
- Correctly set FILE_OBJECT fields.
- Allocate space for SECTION_POINTERS.
- Implement some misc in FatQueryInformation.
- The driver goes up to getting a read request for ntdll.dll.
Modified:
trunk/reactos/drivers/filesystems/fastfat_new/create.c
trunk/reactos/drivers/filesystems/fastfat_new/fastfat.c
trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h
trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h
trunk/reactos/drivers/filesystems/fastfat_new/fcb.c
trunk/reactos/drivers/filesystems/fastfat_new/finfo.c
trunk/reactos/drivers/filesystems/fastfat_new/rw.c
Modified: trunk/reactos/drivers/filesystems/fastfat_new/create.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/create.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/create.c [iso-8859-1] Wed Sep 30
18:16:18 2009
@@ -37,6 +37,54 @@
DPRINT1("Opening root directory\n");
Iosb.Status = STATUS_NOT_IMPLEMENTED;
+
+ return Iosb;
+}
+
+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)
+{
+ IO_STATUS_BLOCK Iosb = {{0}};
+ PFCB Fcb;
+
+ /* Check for create file option and fail */
+ if (CreateDisposition == FILE_CREATE)
+ {
+ Iosb.Status = STATUS_OBJECT_NAME_COLLISION;
+ return Iosb;
+ }
+
+ // TODO: Check more params
+
+ /* Create a new FCB for this file */
+ Fcb = FatCreateFcb(IrpContext, Vcb, ParentDcb);
+
+ // 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;
}
@@ -443,10 +491,35 @@
// TODO: Create a DCB for this entry
}
- // Simulate that we opened the file
- //Iosb.Information = FILE_OPENED;
- Irp->IoStatus.Information = FILE_OPENED;
- FileObject->SectionObjectPointer = (PSECTION_OBJECT_POINTERS)0x1;
+ // TODO: Try to open directory
+
+ /* If end backslash here, then it's definately not permitted,
+ since we're opening files here */
+ if (EndBackslash)
+ {
+ /* 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;
}
/* Complete the request */
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fastfat.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fastfat.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fastfat.c [iso-8859-1] Wed Sep 30
18:16:18 2009
@@ -137,6 +137,7 @@
/* Save IRP, MJ and MN */
IrpContext->Irp = Irp;
+ IrpContext->Stack = IrpSp;
IrpContext->MajorFunction = IrpSp->MajorFunction;
IrpContext->MinorFunction = IrpSp->MinorFunction;
@@ -338,6 +339,34 @@
return TypeOfOpen;
}
+VOID
+NTAPI
+FatSetFileObject(PFILE_OBJECT FileObject,
+ TYPE_OF_OPEN TypeOfOpen,
+ PVOID Fcb,
+ PCCB Ccb)
+{
+ if (Fcb)
+ {
+ /* Check Fcb's type */
+ if (FatNodeType(Fcb) == FAT_NTC_VCB)
+ {
+ FileObject->Vpb = ((PVCB)Fcb)->Vpb;
+ }
+ else
+ {
+ FileObject->Vpb = ((PFCB)Fcb)->Vcb->Vpb;
+ }
+ }
+
+ /* Set FsContext */
+ if (FileObject)
+ {
+ FileObject->FsContext = Fcb;
+ FileObject->FsContext2 = Ccb;
+ }
+}
+
BOOLEAN
NTAPI
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fastfat.h [iso-8859-1] Wed Sep 30
18:16:18 2009
@@ -153,13 +153,11 @@
OUT PFCB *FcbOrDcb,
OUT PCCB *Ccb);
-/* --------------------------------------------------------- fcb.c */
-
-PFCB NTAPI
-FatFindFcb(PFAT_IRP_CONTEXT IrpContext,
- PRTL_SPLAY_LINKS *RootNode,
- PSTRING AnsiName,
- PBOOLEAN IsDosName);
+VOID NTAPI
+FatSetFileObject(PFILE_OBJECT FileObject,
+ TYPE_OF_OPEN TypeOfOpen,
+ PVOID Fcb,
+ PCCB Ccb);
/* --------------------------------------------------------- fullfat.c */
@@ -263,14 +261,11 @@
IN PFCB ParentFcb,
IN PFCB Fcb);
-NTSTATUS
+PFCB NTAPI
FatCreateFcb(
- OUT PFCB* CreatedFcb,
- IN PFAT_IRP_CONTEXT IrpContext,
- IN PFCB ParentFcb,
- IN PDIR_ENTRY Dirent,
- IN PUNICODE_STRING FileName,
- IN PUNICODE_STRING LongFileName OPTIONAL);
+ IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb,
+ IN PFCB ParentDcb);
NTSTATUS
FatOpenFcb(
@@ -279,6 +274,15 @@
IN PFCB ParentFcb,
IN PUNICODE_STRING FileName);
+PFCB NTAPI
+FatFindFcb(PFAT_IRP_CONTEXT IrpContext,
+ PRTL_SPLAY_LINKS *RootNode,
+ PSTRING AnsiName,
+ PBOOLEAN IsDosName);
+
+PCCB NTAPI
+FatCreateCcb();
+
/* ------------------------------------------------------------ rw.c */
NTSTATUS NTAPI
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fatstruc.h [iso-8859-1] Wed Sep 30
18:16:18 2009
@@ -19,6 +19,7 @@
#define FAT_NTC_FCB (CSHORT) 'CF'
#define FAT_NTC_DCB (CSHORT) 'DF'
#define FAT_NTC_ROOT_DCB (CSHORT) 'RFD'
+#define FAT_NTC_CCB (CSHORT) 'BCC'
typedef struct _FAT_GLOBAL_DATA
{
@@ -334,6 +335,9 @@
typedef struct _CCB
{
+ CSHORT NodeTypeCode;
+ CSHORT NodeByteSize;
+
LARGE_INTEGER CurrentByteOffset;
ULONG Entry;
UNICODE_STRING SearchPattern;
Modified: trunk/reactos/drivers/filesystems/fastfat_new/fcb.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/fcb.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/fcb.c [iso-8859-1] Wed Sep 30 18:16:18
2009
@@ -105,5 +105,60 @@
return NULL;
}
+PFCB
+NTAPI
+FatCreateFcb(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PVCB Vcb,
+ IN PFCB ParentDcb)
+{
+ PFCB Fcb;
+
+ /* Allocate it and zero it */
+ Fcb = ExAllocatePoolWithTag(NonPagedPool, sizeof(FCB), TAG_FCB);
+ RtlZeroMemory(Fcb, sizeof(FCB));
+
+ /* Set node types */
+ Fcb->Header.NodeTypeCode = FAT_NTC_FCB;
+ Fcb->Header.NodeByteSize = sizeof(FCB);
+ Fcb->Condition = FcbGood;
+
+ /* Initialize resources */
+ Fcb->Header.Resource = &Fcb->Resource;
+ ExInitializeResourceLite(Fcb->Header.Resource);
+
+ Fcb->Header.PagingIoResource = &Fcb->PagingIoResource;
+ ExInitializeResourceLite(Fcb->Header.PagingIoResource);
+
+ /* Initialize mutexes */
+ Fcb->Header.FastMutex = &Fcb->HeaderMutex;
+ ExInitializeFastMutex(&Fcb->HeaderMutex);
+ FsRtlSetupAdvancedHeader(&Fcb->Header, &Fcb->HeaderMutex);
+
+ /* Insert into parent's DCB list */
+ InsertTailList(&ParentDcb->Dcb.ParentDcbList, &Fcb->ParentDcbLinks);
+
+ /* Set backlinks */
+ Fcb->ParentFcb = ParentDcb;
+ Fcb->Vcb = Vcb;
+
+ return Fcb;
+}
+
+PCCB
+NTAPI
+FatCreateCcb()
+{
+ PCCB Ccb;
+
+ /* Allocate the CCB and zero it */
+ Ccb = ExAllocatePoolWithTag(NonPagedPool, sizeof(CCB), TAG_CCB);
+ RtlZeroMemory(Ccb, sizeof(CCB));
+
+ /* Set mandatory header */
+ Ccb->NodeTypeCode = FAT_NTC_FCB;
+ Ccb->NodeByteSize = sizeof(CCB);
+
+ return Ccb;
+}
/* EOF */
Modified: trunk/reactos/drivers/filesystems/fastfat_new/finfo.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/finfo.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/finfo.c [iso-8859-1] Wed Sep 30 18:16:18
2009
@@ -15,10 +15,77 @@
NTSTATUS
NTAPI
+FatiQueryInformation(IN PFAT_IRP_CONTEXT IrpContext,
+ IN PIRP Irp)
+{
+ PFILE_OBJECT FileObject;
+ PIO_STACK_LOCATION IrpSp;
+ FILE_INFORMATION_CLASS InfoClass;
+ TYPE_OF_OPEN FileType;
+ PVCB Vcb;
+ PFCB Fcb;
+ PCCB Ccb;
+
+ /* Get IRP stack location */
+ IrpSp = IoGetCurrentIrpStackLocation(Irp);
+
+ /* Get the file object */
+ FileObject = IrpSp->FileObject;
+
+ InfoClass = IrpSp->Parameters.QueryFile.FileInformationClass;
+
+ DPRINT1("FatCommonQueryInformation\n", 0);
+ DPRINT1("\tIrp = %08lx\n", Irp);
+ DPRINT1("\tLength = %08lx\n",
IrpSp->Parameters.QueryFile.Length);
+ DPRINT1("\tFileInformationClass = %08lx\n", InfoClass);
+ DPRINT1("\tBuffer = %08lx\n",
Irp->AssociatedIrp.SystemBuffer);
+
+ FileType = FatDecodeFileObject(FileObject, &Vcb, &Fcb, &Ccb);
+
+ DPRINT1("Vcb %p, Fcb %p, Ccb %p, open type %d\n", Vcb, Fcb, Ccb,
FileType);
+
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+NTAPI
FatQueryInformation(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
- DPRINT1("FatQueryInformation()\n");
- return STATUS_NOT_IMPLEMENTED;
+ NTSTATUS Status;
+ BOOLEAN TopLevel, CanWait;
+ PFAT_IRP_CONTEXT IrpContext;
+
+ CanWait = TRUE;
+ TopLevel = FALSE;
+ Status = STATUS_INVALID_DEVICE_REQUEST;
+
+ /* Get CanWait flag */
+ if (IoGetCurrentIrpStackLocation(Irp)->FileObject != NULL)
+ CanWait = IoIsOperationSynchronous(Irp);
+
+ /* Enter FsRtl critical region */
+ FsRtlEnterFileSystem();
+
+ /* Set Top Level IRP if not set */
+ if (IoGetTopLevelIrp() == NULL)
+ {
+ IoSetTopLevelIrp(Irp);
+ TopLevel = TRUE;
+ }
+
+ /* Build an irp context */
+ IrpContext = FatBuildIrpContext(Irp, CanWait);
+
+ /* Perform the actual read */
+ Status = FatiQueryInformation(IrpContext, Irp);
+
+ /* Restore top level Irp */
+ if (TopLevel) IoSetTopLevelIrp(NULL);
+
+ /* Leave FsRtl critical region */
+ FsRtlExitFileSystem();
+
+ return Status;
}
NTSTATUS
Modified: trunk/reactos/drivers/filesystems/fastfat_new/rw.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat_new/rw.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat_new/rw.c [iso-8859-1] Wed Sep 30 18:16:18
2009
@@ -18,19 +18,28 @@
NTAPI
FatiRead(PFAT_IRP_CONTEXT IrpContext)
{
- CSHORT FcbType;
ULONG NumberOfBytes;
+ LARGE_INTEGER ByteOffset;
+ PFILE_OBJECT FileObject;
+ TYPE_OF_OPEN OpenType;
+ PIO_STACK_LOCATION IrpSp = IrpContext->Stack;
+ PFCB Fcb;
+ PVCB Vcb;
+ PCCB Ccb;
- FcbType = *((PCSHORT) IrpContext->FileObject->FsContext);
- NumberOfBytes = IrpContext->Stack->Parameters.Read.Length;
+ FileObject = IrpSp->FileObject;
+ NumberOfBytes = IrpSp->Parameters.Read.Length;
+ ByteOffset = IrpSp->Parameters.Read.ByteOffset;
if (NumberOfBytes == 0)
{
FatCompleteRequest(IrpContext, IrpContext->Irp, STATUS_SUCCESS);
return STATUS_SUCCESS;
}
- //if (FcbType == FAT_NTC_VCB)
+
+ OpenType = FatDecodeFileObject(FileObject, &Vcb, &Fcb, &Ccb);
- DPRINT1("FatiRead()\n");
+ DPRINT1("FatiRead() Fcb %p, Name %wZ, Offset %d, Length %d\n",
+ Fcb, &FileObject->FileName, ByteOffset.LowPart, NumberOfBytes);
return STATUS_NOT_IMPLEMENTED;
}
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