refactor(generate): replace classifySyscall switches with kindRegistry (OCP)

Introduce kindregistry.go with a kindMeta struct (structName, enterAccepted)
and a kindRegistry map keyed by TracepointKind. Replace the switch in
isEnterRejected (codegen.go) and the switch in eventStructName (bpfhandler.go)
with lookupKind registry lookups. Adding a new TracepointKind now only
requires a single registry entry — no switch statements need to be touched.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 3 insertions, 22 deletions

diff --git a/internal/generate/bpfhandler.go b/internal/generate/bpfhandler.go
index 3d76ac4..cf9a0c9 100644
--- a/internal/generate/bpfhandler.go
+++ b/internal/generate/bpfhandler.go
@@ -133,29 +133,10 @@ func generateExtra(tp GeneratedTracepoint, isEnter bool) string {
 	return ""
 }
 
+// eventStructName returns the C struct name for a TracepointKind. The mapping
+// is driven by kindRegistry so adding a new kind only requires a registry entry.
 func eventStructName(kind TracepointKind) string {
-	switch kind {
-	case KindFd:
-		return "fd_event"
-	case KindOpen:
-		return "open_event"
-	case KindPathname:
-		return "path_event"
-	case KindName:
-		return "name_event"
-	case KindRet:
-		return "ret_event"
-	case KindFcntl:
-		return "fcntl_event"
-	case KindNull:
-		return "null_event"
-	case KindDup3:
-		return "dup3_event"
-	case KindOpenByHandleAt:
-		return "open_by_handle_at_event"
-	default:
-		return "unknown_event"
-	}
+	return lookupKind(kind).structName
 }
 
 func eventTypeConstant(kind TracepointKind, isEnter bool) string {