From f9dae4229a9654fc124424333e0c0909834b6b8b Mon Sep 17 00:00:00 2001
From: Meghan Denny <hello@nektro.net>
Date: Sun, 12 Apr 2026 13:40:18 -0700
Subject: [PATCH] AnyWritable: add writev

---
 AnyWritable.zig | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/AnyWritable.zig b/AnyWritable.zig
index 0ffd3d97ccc19aa732368aff013253b2af593488..ede853a09f85d497a6c2b7e122015a11f087412b 100644
--- a/AnyWritable.zig
+++ b/AnyWritable.zig
@@ -1,4 +1,11 @@
 const std = @import("std");
+const builtin = @import("builtin");
+const sys_linux = @import("sys-linux");
+
+const sys = switch (builtin.target.os.tag) {
+    .linux => sys_linux,
+    else => unreachable,
+};
 
 const nio = @import("./nio.zig");
 const AnyWritable = @This();
@@ -13,6 +20,15 @@ pub usingnamespace nio.Writable(@This(), ._const);
 pub fn write(r: AnyWritable, buffer: []const u8) !usize {
     return r.vtable.write(r.state, buffer);
 }
+pub fn writev(w: AnyWritable, iovec: []const sys.struct_iovec) WriteError!usize {
+    var total: usize = 0;
+    for (iovec) |vec| {
+        const len = try write(w, vec.base[0..vec.len]);
+        total += len;
+        if (len != vec.len) break;
+    }
+    return total;
+}
 pub fn anyWritable(r: AnyWritable) AnyWritable {
     return r;
 }
-- 
2.54.0