From 0d7c272d3f8b7925b0810d99a6bbc7cfab3a346f Mon Sep 17 00:00:00 2001
From: Justine Tunney <jtunney@gmail.com>
Date: Sun, 28 Jul 2024 15:02:38 -0700
Subject: [PATCH] Don't use sendfile() in libcxx

---
 third_party/libcxx/fs/operations.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/third_party/libcxx/fs/operations.cpp b/third_party/libcxx/fs/operations.cpp
index a83c1ae15..07f661412 100644
--- a/third_party/libcxx/fs/operations.cpp
+++ b/third_party/libcxx/fs/operations.cpp
@@ -37,7 +37,10 @@
 #include <fcntl.h> /* values for fchmodat */
 #include <time.h>
 
-#if __has_include(<sys/sendfile.h>)
+#if defined(__COSMOPOLITAN__)
+#  include <fstream>
+#  define _LIBCPP_FILESYSTEM_USE_FSTREAM
+#elif __has_include(<sys/sendfile.h>)
 #  include <sys/sendfile.h>
 #  define _LIBCPP_FILESYSTEM_USE_SENDFILE
 #elif defined(__APPLE__) || __has_include(<copyfile.h>)