From e7f3db0679e5d37970a06f428208c3f5b51db5d2 Mon Sep 17 00:00:00 2001
From: "Luke T. Shumaker" <lukeshu@lukeshu.com>
Date: Tue, 18 Mar 2025 10:53:12 -0600
Subject: wip

---
 lib9p/protogen/h.py | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'lib9p/protogen/h.py')

diff --git a/lib9p/protogen/h.py b/lib9p/protogen/h.py
index 7785ca1..3e743e9 100644
--- a/lib9p/protogen/h.py
+++ b/lib9p/protogen/h.py
@@ -166,6 +166,11 @@ def gen_h(versions: set[str], typs: list[idl.UserType]) -> str:
 #include <stdint.h> /* for uint{{n}}_t types */
 
 #include <libhw/generic/net.h> /* for struct iovec */
+
+struct {c9util.ident('_iovec_list')} {{
+\tstruct iovec *iov;
+\tint           iovcnt;
+}};
 """
 
     id2typ: dict[int, idl.Message] = {}
@@ -224,6 +229,7 @@ enum {c9util.ident('version')} {{
 
     ret += """
 /* payload types **************************************************************/
+
 """
 
     def per_version_comment(
@@ -357,7 +363,13 @@ enum {c9util.ident('version')} {{
                     if member.val:
                         continue
                     ret += cutil.ifdef_push(2, c9util.ver_ifdef(member.in_versions))
-                    ret += f"\t{c9util.typename(member.typ, member):<{typewidth}}  {'*' if member.cnt else ' '}{member.membname};\n"
+                    ptr = bool(member.cnt)
+                    if (
+                        c9util.typename(member.typ, member)
+                        == f"struct {c9util.ident('_iovec')}"
+                    ):  # SPECIAL (zerocopy)
+                        ptr = False
+                    ret += f"\t{c9util.typename(member.typ, member):<{typewidth}}  {'*' if ptr else ' '}{member.membname};\n"
                 ret += cutil.ifdef_pop(1)
                 ret += "};\n"
         del typ
-- 
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