Don't delete socket on server exit if it was passed in

* lisp/server.el (server-sentinel): Don't delete the socket if it
was passed in to Emacs (bug#47511).

1 files changed, 6 insertions, 1 deletions

diff --git a/lisp/server.el b/lisp/server.el
index 220694f6cbf..17332a2b0a1 100644
--- a/lisp/server.el
+++ b/lisp/server.el
@@ -413,9 +413,14 @@ If CLIENT is non-nil, add a description of it to the logged message."
   ;; for possible servers before doing anything, so it *should* be ours.
   (and (process-contact proc :server)
        (eq (process-status proc) 'closed)
+       ;; If this variable is non-nil, the socket was passed in to
+       ;; Emacs, and not created by Emacs itself (for instance,
+       ;; created by systemd).  In that case, don't delete the socket.
+       (not internal--daemon-sockname)
        (ignore-errors
 	 (delete-file (process-get proc :server-file))))
-  (server-log (format "Status changed to %s: %s" (process-status proc) msg) proc)
+  (server-log (format "Status changed to %s: %s"
+                      (process-status proc) msg) proc)
   (server-delete-client proc))
 
 (defun server--on-display-p (frame display)