X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=KernelLand%2FKernel%2Finclude%2Fvfs.h;h=6afe309a1677623748f4cd8a87e11372ceb39b2e;hb=d8b31df1121ff75fe218f83574eb600c47f8d2d5;hp=91dcd693f9547aed736af4e0b11a0d248c65a0e2;hpb=11dbd684e9a3d907d43d71a3145205f1a86992fb;p=tpg%2Facess2.git

diff --git a/KernelLand/Kernel/include/vfs.h b/KernelLand/Kernel/include/vfs.h
index 91dcd693..6afe309a 100644
--- a/KernelLand/Kernel/include/vfs.h
+++ b/KernelLand/Kernel/include/vfs.h
@@ -77,7 +77,15 @@ typedef struct sVFS_NodeType	tVFS_NodeType;
  * is unmapped. Nice for read-only files and memory-only files (or 
  * pseudo-readonly filesystems)
  */
-#define VFS_FFLAG_NOWRITEBACK
+#define VFS_FFLAG_NOWRITEBACK	0x1000
+
+/**
+ * \brief "Dirty Metadata" Flag
+ *
+ * Indicates that the node's metadata has been altered since the flag was last
+ * cleared. Tells the driver that it should update the inode at the next flush.
+ */
+#define VFS_FFLAG_DIRTY 	0x8000
 /**
  * \}
  */
@@ -339,6 +347,15 @@ typedef struct sVFS_Driver
 	 */
 	Uint	Flags;
 	
+	/**
+	 * \brief Detect if a volume is accessible using this driver
+	 * \return Boolean success (with higher numbers being higher priority)
+	 *
+	 * E.g. FAT would return 1 as it's the lowest common denominator while ext2 might return 2,
+	 * because it can be embedded in a FAT volume (and is a more fully featured filesystem).
+	 */
+	 int	(*Detect)(int FD);
+
 	/**
 	 * \brief Callback to mount a device
 	 */