Add a function to hash typequery modules

2 files changed, 22 insertions, 0 deletions

diff --git a/hash.cxx b/hash.cxx
index 01013c43..45ae05eb 100644
--- a/hash.cxx
+++ b/hash.cxx
@@ -273,4 +273,24 @@ find_tracequery_hash (systemtap_session& s)
   s.tracequery_path = hashdir + "/tracequery_" + result + ".ko";
 }
 
+
+void
+find_typequery_hash (systemtap_session& s, const string& name, string& module)
+{
+  hash h;
+  get_base_hash(s, h);
+
+  // Add the typequery name to distinguish the hash
+  h.add(name);
+
+  // Get the directory path to store our cached module
+  string result, hashdir;
+  h.result(result);
+  if (!create_hashdir(s, result, hashdir))
+    return;
+
+  module = hashdir + "/typequery_" + result
+    + (name[0] == 'k' ? ".ko" : ".so");
+}
+
 /* vim: set sw=2 ts=8 cino=>4,n-2,{2,^-2,t0,(0,u0,w1,M1 : */
diff --git a/hash.h b/hash.h
index bb3d5ae1..7e432216 100644
--- a/hash.h
+++ b/hash.h
@@ -37,5 +37,7 @@ public:
 
 void find_hash (systemtap_session& s, const std::string& script);
 void find_tracequery_hash (systemtap_session& s);
+void find_typequery_hash (systemtap_session& s, const std::string& name,
+                          std::string& module);
 
 /* vim: set sw=2 ts=8 cino=>4,n-2,{2,^-2,t0,(0,u0,w1,M1 : */