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-rw-r--r--cmogstored.x6
1 files changed, 6 insertions, 0 deletions
diff --git a/cmogstored.x b/cmogstored.x
index a6b96e6..20eeb36 100644
--- a/cmogstored.x
+++ b/cmogstored.x
@@ -22,6 +22,12 @@ different sockets, the command line or config file must still specify
 which addresses to listen on.  This feature is available in cmogstored
 1.5.0 and later.
 
+CMOGSTORED_FD - a comma-delimited list of integer file descriptors.
+This is used internally for SIGUSR2 upgrades, but may be specified
+at startup (e.g. via env(1)) as it is not tied to LISTEN_PID
+like LISTEN_FDS is.  Unlike LISTEN_FDS, CMOGSTORED_FD does not rely
+on inherited file descriptors being contiguous.
+
 See MALLOC TUNING for environment variables which may affect memory
 usage.