From 9f4a4b615d95caf5639f7518896e41012f30a14f Mon Sep 17 00:00:00 2001
From: Robert Hencke <robert.hencke@gmail.com>
Date: Sun, 8 Aug 2021 07:04:13 -0400
Subject: [PATCH] Only re-open executable as O_RDWR if .ape present

This attempts to avoid a SIGSEGV in environments where the original
executable cannot be reopened as O_RDWR (AWS Lambda)

(hopefully) fixes #233
---
 tool/net/redbean.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tool/net/redbean.c b/tool/net/redbean.c
index e008ccc0e..cffac5538 100644
--- a/tool/net/redbean.c
+++ b/tool/net/redbean.c
@@ -5035,7 +5035,6 @@ static int LuaGetComment(lua_State *L) {
   return 1;
 }
 
-
 static int LuaGetHostOs(lua_State *L) {
   const char *s = NULL;
   if (IsLinux()) {
@@ -6472,9 +6471,9 @@ static void RestoreApe(void) {
   if (IsOpenbsd()) return; /* TODO */
   if (IsNetbsd()) return;  /* TODO */
   if (endswith(zpath, ".com.dbg")) return;
-  close(zfd);
-  zfd = OpenExecutable();
   if ((a = GetAssetZip("/.ape", 5)) && (p = LoadAsset(a, &n))) {
+    close(zfd);
+    zfd = OpenExecutable();
     write(zfd, p, n);
     free(p);
   } else {