Changeset bcf23cf in mainline for uspace/srv/vfs/vfs.h

Timestamp:

2007-09-27T12:38:31Z (18 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

37e7dc54

Parents:

5d4e90f0

Message:

VFS work.
Start support for the Patch Lookup Buffer.
Also add rootfs pointer.

File:

• uspace/srv/vfs/vfs.h (modified) (3 diffs)

uspace/srv/vfs/vfs.h

@@ -37 +37 @@
 #include <libadt/list.h>
 #include <atomic.h>
-#include <types.h>
+#include <sys/types.h>
 
 #define dprintf(...)    printf(__VA_ARGS__)
@@ -44 +44 @@
 
 #define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST)       
-
-typedef int64_t off_t;
 
 typedef enum {
@@ -126 +124 @@
 } vfs_file_t;
 
-extern link_t fs_head;
+extern link_t fs_head;          /**< List of registered file systems. */
 
-extern void vfs_register(ipc_callid_t rid, ipc_call_t *request);
+extern vfs_node_t *rootfs;      /**< Root node of the root file system. */
+
+#define MAX_PATH_LEN            (64 * 1024)
+
+#define PLB_SIZE                (2 * MAX_PATH_LEN)
+
+/** Each instance of this type describes one path lookup in progress. */
+typedef struct {
+        link_t  plb_link;       /**< Active PLB entries list link. */
+        unsigned index;         /**< Index of the first character in PLB. */
+        size_t len;             /**< Number of characters in this PLB entry. */
+} plb_entry_t;
+
+extern atomic_t plb_futex;      /**< Futex protecting plb and plb_head. */
+extern uint8_t *plb;            /**< Path Lookup Buffer */
+extern link_t plb_head;         /**< List of active PLB entries. */
+
+extern void vfs_register(ipc_callid_t, ipc_call_t *);
+extern void vfs_lookup(ipc_callid_t, ipc_call_t *);
 
 #endif