variable: add VariableSpec.MapName() and .Offset() methods

Cilium's variable inliner needs this information to look up variable contents based on the offset specified in the instruction stream, and wants to validate that it's pulling data from the right data section. It makes for a slightly leaky abstraction, but at least something meaningful can be accomplished by combining the two, e.g. by accessing the given offset in the map. Signed-off-by: Timo Beckers <[email protected]>
cilium · Nov 14, 2024 · ec48f59 · ec48f59
1 parent 2ce8a41
commit ec48f59
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/variable.go b/variable.go
@@ -75,6 +75,16 @@ func (s *VariableSpec) Size() uint64 {
 	return s.size
 }
 
+// MapName returns the name of the underlying MapSpec.
+func (s *VariableSpec) MapName() string {
+	return s.m.Name
+}
+
+// Offset returns the offset of the variable in the underlying MapSpec.
+func (s *VariableSpec) Offset() uint64 {
+	return s.offset
+}
+
 // Constant returns true if the VariableSpec represents a variable that is
 // read-only from the perspective of the BPF program.
 func (s *VariableSpec) Constant() bool {