[ros-diffs] [fireball] 26636: - Add fundamental VCB structure, and function to initialize it. - Add common headers to all xCB structures. - All development is being done according to Rajeev Nagar's book and some parts are inspired by its accompanying FSD sample.

Author: fireball
Date: Fri May  4 22:34:48 2007
New Revision: 26636

URL: http://svn.reactos.org/svn/reactos?rev=26636&view=rev
Log:
- Add fundamental VCB structure, and function to initialize it.
- Add common headers to all xCB structures.
- All development is being done according to Rajeev Nagar's book and some parts are
inspired by its accompanying FSD sample.

Modified:
    trunk/reactos/drivers/filesystems/npfs_new/npfs.c
    trunk/reactos/drivers/filesystems/npfs_new/npfs.h

Modified: trunk/reactos/drivers/filesystems/npfs_new/npfs.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/npfs_n…
==============================================================================
--- trunk/reactos/drivers/filesystems/npfs_new/npfs.c (original)
+++ trunk/reactos/drivers/filesystems/npfs_new/npfs.c Fri May  4 22:34:48 2007
@@ -14,6 +14,8 @@
 #include <debug.h>
 
 ULONG NpfsDebugLevel = NPFS_DL_API_TRACE;
+
+static VOID NpfsInitializeVcb(PNPFS_VCB Vcb);
 
 /* FUNCTIONS *****************************************************************/
 
@@ -67,6 +69,9 @@
 
 	/* initialize the device extension */
 	DeviceExtension = DeviceObject->DeviceExtension;
+
+	NpfsInitializeVcb(&DeviceExtension->Vcb);
+
 	InitializeListHead(&DeviceExtension->PipeListHead);
 	InitializeListHead(&DeviceExtension->ThreadListHead);
 	KeInitializeMutex(&DeviceExtension->PipeListLock, 0);
@@ -78,6 +83,22 @@
 	DeviceExtension->MaxQuota = 64 * PAGE_SIZE;
 
 	return STATUS_SUCCESS;
+}
+
+static VOID
+NpfsInitializeVcb(PNPFS_VCB Vcb)
+{
+	/* Initialize Volume Control Block, it's one per whole named pipe
+	   file system. */
+
+	NpfsDbgPrint(NPFS_DL_API_TRACE, "NpfsInitializeVcb(), Vcb = %p\n", Vcb);
+
+	/* Zero-init whole VCB */
+	RtlZeroMemory(Vcb, sizeof(NPFS_VCB));
+
+	/* Initialize the common header */
+	Vcb->NodeTypeCode = NPFS_NODETYPE_VCB;
+	Vcb->NodeByteSize = sizeof(NPFS_VCB);
 }
 
 VOID NTAPI

Modified: trunk/reactos/drivers/filesystems/npfs_new/npfs.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/npfs_n…
==============================================================================
--- trunk/reactos/drivers/filesystems/npfs_new/npfs.h (original)
+++ trunk/reactos/drivers/filesystems/npfs_new/npfs.h Fri May  4 22:34:48 2007
@@ -11,20 +11,23 @@
 #define NPFS_DL_NONE      0x00000000
 #define NPFS_DL_API_TRACE 0x00000001
 
-typedef struct _NPFS_DEVICE_EXTENSION
+/* Node type codes for NPFS */
+#define NPFS_NODETYPE_VCB 0x401
+#define NPFS_NODETYPE_DCB 0x402
+#define NPFS_NODETYPE_FCB 0x404
+#define NPFS_NODETYPE_CCB 0x406
+
+typedef struct _NPFS_VCB
 {
-	LIST_ENTRY PipeListHead;
-	LIST_ENTRY ThreadListHead;
-	KMUTEX PipeListLock;
-	ULONG EmptyWaiterCount;
-	ULONG MinQuota;
-	ULONG DefaultQuota;
-	ULONG MaxQuota;
-} NPFS_DEVICE_EXTENSION, *PNPFS_DEVICE_EXTENSION;
+	/* Common node header */
+	CSHORT NodeTypeCode;
+	CSHORT NodeByteSize;
+
+} NPFS_VCB, *PNPFS_VCB;
 
 typedef struct _NPFS_FCB
 {
-	FSRTL_COMMON_FCB_HEADER RFCB;
+	FSRTL_COMMON_FCB_HEADER RFCB; /* Includes common node header */
 	UNICODE_STRING PipeName;
 	LIST_ENTRY PipeListEntry;
 	KMUTEX CcbListLock;
@@ -46,6 +49,10 @@
 
 typedef struct _NPFS_CCB
 {
+	/* Common node header */
+	CSHORT NodeTypeCode;
+	CSHORT NodeByteSize;
+
 	LIST_ENTRY CcbListEntry;
 	struct _NPFS_CCB* OtherSide;
 	struct ETHREAD *Thread;
@@ -67,6 +74,20 @@
 
 	FAST_MUTEX DataListLock;	/* Data queue lock */
 } NPFS_CCB, *PNPFS_CCB;
+
+typedef struct _NPFS_DEVICE_EXTENSION
+{
+	LIST_ENTRY PipeListHead;
+	LIST_ENTRY ThreadListHead;
+	KMUTEX PipeListLock;
+	ULONG EmptyWaiterCount;
+	ULONG MinQuota;
+	ULONG DefaultQuota;
+	ULONG MaxQuota;
+
+	NPFS_VCB Vcb;
+} NPFS_DEVICE_EXTENSION, *PNPFS_DEVICE_EXTENSION;
+
 
 typedef struct _NPFS_CONTEXT
 {
@@ -90,7 +111,6 @@
 	LIST_ENTRY Entry;
 	PNPFS_CCB Ccb;
 } NPFS_WAITER_ENTRY, *PNPFS_WAITER_ENTRY;
-
 
 extern NPAGED_LOOKASIDE_LIST NpfsPipeDataLookasideList;