Remove set_cloexec wrapper and require FD_CLOEXEC

FD_CLOEXEC is POSIX and we only run on POSIX.  Things will
slowly leak over time if FD_CLOEXEC is not set, so raise
the issue ASAP.

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/unicorn.rb b/lib/unicorn.rb
index cbbb283..3bdbb3a 100644
--- a/lib/unicorn.rb
+++ b/lib/unicorn.rb
@@ -1,4 +1,5 @@
 require 'logger'
+require 'fcntl'
 
 require 'unicorn/socket'
 require 'unicorn/const'
@@ -425,7 +426,7 @@ module Unicorn
       @workers.clear
       @start_ctx.clear
       @start_ctx = @workers = @rd_sig = @wr_sig = nil
-      @listeners.each { |sock| set_cloexec(sock) }
+      @listeners.each { |sock| sock.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC) }
       ENV.delete('UNICORN_FD')
       @after_fork.call(self, worker.nr) if @after_fork
       @request = HttpRequest.new(logger)