Changeset 595edf5 in mainline for uspace/lib/libfs/libfs.c

Timestamp:

2009-06-03T19:28:15Z (16 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

36b8100a

Parents:

d00ae4c

Message:

add libfs_open_node() helper function
cleanup

File:

• uspace/lib/libfs/libfs.c (modified) (3 diffs)

uspace/lib/libfs/libfs.c

@@ -43 +43 @@
 #include <assert.h>
 #include <dirent.h>
+#include <mem.h>
 
 /** Register file system server.
@@ -209 +210 @@
  * as returned by the canonify() function.
  *
- * @param ops           libfs operations structure with function pointers to
- *                      file system implementation
- * @param fs_handle     File system handle of the file system where to perform
- *                      the lookup.
- * @param rid           Request ID of the VFS_LOOKUP request.
- * @param request       VFS_LOOKUP request data itself.
+ * @param ops       libfs operations structure with function pointers to
+ *                  file system implementation
+ * @param fs_handle File system handle of the file system where to perform
+ *                  the lookup.
+ * @param rid       Request ID of the VFS_LOOKUP request.
+ * @param request   VFS_LOOKUP request data itself.
+ *
  */
 void libfs_lookup(libfs_ops_t *ops, fs_handle_t fs_handle, ipc_callid_t rid,
@@ -427 +429 @@
 }
 
+/** Open VFS triplet.
+ *
+ * @param ops       libfs operations structure with function pointers to
+ *                  file system implementation
+ * @param rid       Request ID of the VFS_OPEN_NODE request.
+ * @param request   VFS_OPEN_NODE request data itself.
+ *
+ */
+void libfs_open_node(libfs_ops_t *ops, fs_handle_t fs_handle, ipc_callid_t rid,
+    ipc_call_t *request)
+{
+        dev_handle_t dev_handle = IPC_GET_ARG1(*request);
+        fs_index_t index = IPC_GET_ARG2(*request);
+        
+        fs_node_t *node = ops->node_get(dev_handle, index);
+        
+        if (node == NULL) {
+                ipc_answer_0(rid, ENOENT);
+                return;
+        }
+        
+        ipc_answer_5(rid, EOK, fs_handle, dev_handle, index,
+            ops->size_get(node), ops->lnkcnt_get(node));
+        
+        ops->node_put(node);
+}
+
 /** @}
  */