Changeset b3f598e in mainline for uspace/srv/vfs/vfs.h

Timestamp:

2007-09-13T20:19:40Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

183b4a0

Parents:

c952465d

Message:

VFS work.
Start implementing the VFS_REGISTER request.

File:

• uspace/srv/vfs/vfs.h (modified) (1 diff)

uspace/srv/vfs/vfs.h

@@ -35 +35 @@
 
 typedef enum {
-        VFS_REGISTER = 1,
+        VFS_REGISTER = 0,
         VFS_MOUNT,
         VFS_UNMOUNT,
-        VFS_OPEN
+        VFS_OPEN,
+        VFS_LAST,               /* keep this the last member of the enum */
 } vfs_request_t;
+
+
+/**
+ * An instance of this structure is associated with a particular FS operation.
+ * It tells VFS if the FS supports the operation or maybe if a default one
+ * should be used.
+ */
+typedef enum {
+        VFS_OP_NOTSUP = 0,
+        VFS_OP_DEFAULT,
+        VFS_OP_DEFINED
+} vfs_op_t;
+
+#define FS_NAME_MAXLEN  20
+
+/**
+ * A structure like this is passed to VFS by each individual FS upon its
+ * registration. It assosiates a human-readable identifier with each
+ * registered FS. More importantly, through this structure, the FS announces
+ * what operations it supports.
+ */
+typedef struct {
+        char fs_name[FS_NAME_MAXLEN];   /**< Unique identifier of the fs. */
+        vfs_op_t ops[VFS_LAST];         /**< Operations. */
+} vfs_info_t;
 
 #endif