diff -r 7558cee89655 -r e618a1756b08 mercurial/posix.py
--- a/mercurial/posix.py	Thu Jul 18 22:46:36 2024 -0400
+++ b/mercurial/posix.py	Fri Jul 19 16:38:53 2024 -0400
@@ -386,20 +386,20 @@
     return None  # on posix platforms, every path is ok
 
 
-def getfsmountpoint(dirpath: bytes) -> Optional[bytes]:
+def getfsmountpoint(path: bytes) -> Optional[bytes]:
     """Get the filesystem mount point from a directory (best-effort)
 
     Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc.
     """
-    return getattr(osutil, 'getfsmountpoint', lambda x: None)(dirpath)
+    return getattr(osutil, 'getfsmountpoint', lambda x: None)(path)
 
 
-def getfstype(dirpath: bytes) -> Optional[bytes]:
+def getfstype(path: bytes) -> Optional[bytes]:
     """Get the filesystem type name from a directory (best-effort)
 
     Returns None if we are unsure. Raises OSError on ENOENT, EPERM, etc.
     """
-    return getattr(osutil, 'getfstype', lambda x: None)(dirpath)
+    return getattr(osutil, 'getfstype', lambda x: None)(path)
 
 
 def get_password() -> bytes:
@@ -691,7 +691,7 @@
 
 def lookupreg(
     key: bytes,
-    name: Optional[bytes] = None,
+    valname: Optional[bytes] = None,
     scope: Optional[Union[int, Iterable[int]]] = None,
 ) -> Optional[bytes]:
     return None