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* [PATCH] bin/mwrap: support LISTEN_FDS env from systemd
@ 2018-07-16  9:30 Eric Wong
  0 siblings, 0 replies; only message in thread
From: Eric Wong @ 2018-07-16  9:30 UTC (permalink / raw)
  To: mwrap-public

OK, Ruby blindly closing file descriptors it doesn't know about
is really getting on my nerves, now.
---
 bin/mwrap | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/bin/mwrap b/bin/mwrap
index 964fdf8..9f67dab 100755
--- a/bin/mwrap
+++ b/bin/mwrap
@@ -26,4 +26,11 @@ if ENV['MWRAP'] =~ /dump_fd:(\d+)/
     opts[dump_fd] = dump_io
   end
 end
+
+# allow inheriting FDs from systemd
+n = ENV['LISTEN_FDS']
+if n && ENV['LISTEN_PID'].to_i == $$
+  n = 3 + n.to_i
+  (3...n).each { |fd| opts[fd] = IO.new(fd) }
+end
 exec *ARGV, opts
-- 
EW


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2018-07-16  9:30 [PATCH] bin/mwrap: support LISTEN_FDS env from systemd Eric Wong

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