1 files changed, 37 insertions, 0 deletions
diff --git a/scripts/gdb/linux/vfs.py b/scripts/gdb/linux/vfs.py
index 62d4f9ad7d79..c77b9ce75f6d 100644
--- a/scripts/gdb/linux/vfs.py
+++ b/scripts/gdb/linux/vfs.py
@@ -13,6 +13,9 @@
 # This work is licensed under the terms of the GNU GPL version 2.
 #
 
+import gdb
+from linux import utils
+
 
 def dentry_name(d):
     parent = d['d_parent']
@@ -20,3 +23,37 @@ def dentry_name(d):
         return ""
     p = dentry_name(d['d_parent']) + "/"
     return p + d['d_iname'].string()
+
+class DentryName(gdb.Function):
+    """Return string of the full path of a dentry.
+
+$lx_dentry_name(PTR): Given PTR to a dentry struct, return a string
+of the full path of the dentry."""
+
+    def __init__(self):
+        super(DentryName, self).__init__("lx_dentry_name")
+
+    def invoke(self, dentry_ptr):
+        return dentry_name(dentry_ptr)
+
+DentryName()
+
+
+dentry_type = utils.CachedType("struct dentry")
+
+class InodeDentry(gdb.Function):
+    """Return dentry pointer for inode.
+
+$lx_i_dentry(PTR): Given PTR to an inode struct, return a pointer to
+the associated dentry struct, if there is one."""
+
+    def __init__(self):
+        super(InodeDentry, self).__init__("lx_i_dentry")
+
+    def invoke(self, inode_ptr):
+        d_u = inode_ptr["i_dentry"]["first"]
+        if d_u == 0:
+            return ""
+        return utils.container_of(d_u, dentry_type.get_type().pointer(), "d_u")
+
+InodeDentry()