tetragon: Add MapOther* interface

Adding MapOther* interface to create map that you don't own.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>

pkg/sensors/program/map.go

@@ -47,6 +47,15 @@
 //      - map is local for program, not shared at all
 //
 //  NOTE Please do not share MapTypeProgram maps, it brings confusion.
+//
+//  Each map declares the ownership of the map. It can be either:
+//
+//    MapOwnerMe    - Map object owns the pinned map and when loading it sets
+//                    (and potentially overwrite) the map's spec and its max
+//                    entries value
+//    MapOwnerOther - Map object is just the user of the pinned map and follows
+//                    its setup and will fail if the pinned map differs in spec
+//                    or configured max entries value
 
 package program
 
@@ -141,6 +150,26 @@ func MapBuilderType(name string, ty MapType, lds ...*Program) *Map {
 	return mapBuilder(name, ty, MapOwnerMe, lds...)
 }
 
+func MapBuilderOpts(name string, opts MapOpts, lds ...*Program) *Map {
+	return mapBuilder(name, opts.Type, opts.Owner, lds...)
+}
+
+func MapOther(name string, lds ...*Program) *Map {
+	return mapBuilder(name, MapTypeGlobal, MapOwnerOther, lds...)
+}
+
+func MapOtherProgram(name string, lds ...*Program) *Map {
+	return mapBuilder(name, MapTypeProgram, MapOwnerOther, lds...)
+}
+
+func MapOtherSensor(name string, lds ...*Program) *Map {
+	return mapBuilder(name, MapTypeSensor, MapOwnerOther, lds...)
+}
+
+func MapOtherPolicy(name string, lds ...*Program) *Map {
+	return mapBuilder(name, MapTypePolicy, MapOwnerOther, lds...)
+}
+
 func PolicyMapPath(mapDir, policy, name string) string {
 	return filepath.Join(mapDir, policy, name)
 }