From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms0.migadu.com with LMTPS id gKT5J7wWHmK+egEAgWs5BA (envelope-from ) for ; Tue, 01 Mar 2022 13:51:08 +0100 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id gM2cJLwWHmI+TAAAauVa8A (envelope-from ) for ; Tue, 01 Mar 2022 13:51:08 +0100 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 41C403D77E for ; Tue, 1 Mar 2022 13:51:08 +0100 (CET) Received: from localhost ([::1]:38376 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nP1y7-0000BR-C0 for larch@yhetil.org; Tue, 01 Mar 2022 07:51:07 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44276) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nP1v8-0006gm-PB for guix-patches@gnu.org; Tue, 01 Mar 2022 07:48:07 -0500 Received: from debbugs.gnu.org ([209.51.188.43]:41904) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nP1v8-0001Xz-Fn for guix-patches@gnu.org; Tue, 01 Mar 2022 07:48:02 -0500 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1nP1v8-0001Gf-9G for guix-patches@gnu.org; Tue, 01 Mar 2022 07:48:02 -0500 X-Loop: help-debbugs@gnu.org Subject: [bug#54205] [PATCH Shepherd] Factor out a public CALL-IN-FORK. 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'fork+exec-command' already accepts a 'environment-variables' and 'file-creation-mask', how about adding an 'open-file-limit' argument? To me, that seems more declarative and less fragile than having to call 'call-in-fork' manually in a 'start' procedure (*). Support for other rlimits can be added on an as-needed basis. Alternatively, the argument could be generalised to a more general 'rlimit' argument: #:rlimits `((,RLIMIT_AS ,SOFT ,HARD) (,RLIMIT_NPROC ,SOFT ,HARD) (,RLIMIT_NOFILE ,SOFT ,HARD)) WDYT? Greetings, Maxime. (*) E.g., one of the ideas for making shepherd faster, was using some kind of multi-threading. Forking when multi-threading is ill-defined (see POSIX) though, so some kind of zygote process + IPC might be necessary (http://neugierig.org/software/chromium/notes/2011/08/zygote.html has a nice explanation on zygote processes, the bits about software updates can be ignored here). --=-Ee8t70XAX0uk4RrkMNAx Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iI0EABYKADUWIQTB8z7iDFKP233XAR9J4+4iGRcl7gUCYh4VzRccbWF4aW1lZGV2 b3NAdGVsZW5ldC5iZQAKCRBJ4+4iGRcl7k8SAP4gZaaQE/hNFfzGvxdqI+eKxCqc jXMNaJTOYqkDqloFzwEAo7Eqqzbabm3nzRrq7tfYfRuU63LWiq+0/EBDo5rP4wM= =jRlT -----END PGP SIGNATURE----- --=-Ee8t70XAX0uk4RrkMNAx--