[AppArmor 35/45] Allow permission functions to tell between parent and leaf checks

[jjohansen]

Set the LOOKUP_CONTINUE flag when checking parent permissions. This allows
permission functions to tell between parent and leaf checks.

Signed-off-by: Andreas Gruenbacher <agruen@xxxxxxx>
Signed-off-by: John Johansen <jjohansen@xxxxxxx>

---
 fs/namei.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1472,6 +1472,10 @@ static int may_delete(struct inode *dir,
 	BUG_ON(victim->d_parent->d_inode != dir);
 	audit_inode_child(victim->d_name.name, victim, dir);
 
+#if 0
+	if (nd)
+		nd->flags |= LOOKUP_CONTINUE;
+#endif
 	error = permission(dir,MAY_WRITE | MAY_EXEC, NULL);
 	if (error)
 		return error;
@@ -1509,6 +1513,8 @@ static inline int may_create(struct inod
 		return -EEXIST;
 	if (IS_DEADDIR(dir))
 		return -ENOENT;
+	if (nd)
+		nd->flags |= LOOKUP_CONTINUE;
 	return permission(dir,MAY_WRITE | MAY_EXEC, nd);
 }
 

-- 

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