1 files changed, 25 insertions, 9 deletions
diff --git a/tools/net/sunrpc/xdrgen/generators/union.py b/tools/net/sunrpc/xdrgen/generators/union.py
index 2cca00e279cd..ad1f214ef22a 100644
--- a/tools/net/sunrpc/xdrgen/generators/union.py
+++ b/tools/net/sunrpc/xdrgen/generators/union.py
@@ -8,7 +8,7 @@ from jinja2 import Environment
 from generators import SourceGenerator
 from generators import create_jinja2_environment, get_jinja2_template
 
-from xdr_ast import _XdrBasic, _XdrUnion, _XdrVoid, get_header_name
+from xdr_ast import _XdrBasic, _XdrUnion, _XdrVoid, _XdrString, get_header_name
 from xdr_ast import _XdrDeclaration, _XdrCaseSpec, public_apis, big_endian
 
 
@@ -40,13 +40,20 @@ def emit_union_case_spec_definition(
     """Emit a definition for an XDR union's case arm"""
     if isinstance(node.arm, _XdrVoid):
         return
-    assert isinstance(node.arm, _XdrBasic)
+    if isinstance(node.arm, _XdrString):
+        type_name = "char *"
+        classifier = ""
+    else:
+        type_name = node.arm.spec.type_name
+        classifier = node.arm.spec.c_classifier
+
+    assert isinstance(node.arm, (_XdrBasic, _XdrString))
     template = get_jinja2_template(environment, "definition", "case_spec")
     print(
         template.render(
             name=node.arm.name,
-            type=node.arm.spec.type_name,
-            classifier=node.arm.spec.c_classifier,
+            type=type_name,
+            classifier=classifier,
         )
     )
 
@@ -84,6 +91,12 @@ def emit_union_case_spec_decoder(
 
     if isinstance(node.arm, _XdrVoid):
         return
+    if isinstance(node.arm, _XdrString):
+        type_name = "char *"
+        classifier = ""
+    else:
+        type_name = node.arm.spec.type_name
+        classifier = node.arm.spec.c_classifier
 
     if big_endian_discriminant:
         template = get_jinja2_template(environment, "decoder", "case_spec_be")
@@ -92,13 +105,13 @@ def emit_union_case_spec_decoder(
     for case in node.values:
         print(template.render(case=case))
 
-    assert isinstance(node.arm, _XdrBasic)
+    assert isinstance(node.arm, (_XdrBasic, _XdrString))
     template = get_jinja2_template(environment, "decoder", node.arm.template)
     print(
         template.render(
             name=node.arm.name,
-            type=node.arm.spec.type_name,
-            classifier=node.arm.spec.c_classifier,
+            type=type_name,
+            classifier=classifier,
         )
     )
 
@@ -169,7 +182,10 @@ def emit_union_case_spec_encoder(
 
     if isinstance(node.arm, _XdrVoid):
         return
-
+    if isinstance(node.arm, _XdrString):
+        type_name = "char *"
+    else:
+        type_name = node.arm.spec.type_name
     if big_endian_discriminant:
         template = get_jinja2_template(environment, "encoder", "case_spec_be")
     else:
@@ -181,7 +197,7 @@ def emit_union_case_spec_encoder(
     print(
         template.render(
             name=node.arm.name,
-            type=node.arm.spec.type_name,
+            type=type_name,
         )
     )