From owner-svn-src-all@freebsd.org Sun Oct 18 15:58:17 2020 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id B0E05435FAA; Sun, 18 Oct 2020 15:58:17 +0000 (UTC) (envelope-from trasz@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CDl0n44VZz4fqt; Sun, 18 Oct 2020 15:58:17 +0000 (UTC) (envelope-from trasz@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 6F3BB14CBD; Sun, 18 Oct 2020 15:58:17 +0000 (UTC) (envelope-from trasz@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 09IFwHDT018291; Sun, 18 Oct 2020 15:58:17 GMT (envelope-from trasz@FreeBSD.org) Received: (from trasz@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 09IFwGJZ018288; Sun, 18 Oct 2020 15:58:16 GMT (envelope-from trasz@FreeBSD.org) Message-Id: <202010181558.09IFwGJZ018288@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: trasz set sender to trasz@FreeBSD.org using -f From: Edward Tomasz Napierala Date: Sun, 18 Oct 2020 15:58:16 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r366809 - head/sys/compat/linux X-SVN-Group: head X-SVN-Commit-Author: trasz X-SVN-Commit-Paths: head/sys/compat/linux X-SVN-Commit-Revision: 366809 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Oct 2020 15:58:17 -0000 Author: trasz Date: Sun Oct 18 15:58:16 2020 New Revision: 366809 URL: https://svnweb.freebsd.org/changeset/base/366809 Log: Add compat.linux.dummy_rlimits, and disable by default. Turns out the dummy rlimits fix prlimit(1), but break su(8) (login-1:4.5-1ubuntu2) - although not sudo(8), for some reason. MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D26814 Modified: head/sys/compat/linux/linux_mib.c head/sys/compat/linux/linux_mib.h head/sys/compat/linux/linux_misc.c Modified: head/sys/compat/linux/linux_mib.c ============================================================================== --- head/sys/compat/linux/linux_mib.c Sun Oct 18 15:56:47 2020 (r366808) +++ head/sys/compat/linux/linux_mib.c Sun Oct 18 15:58:16 2020 (r366809) @@ -77,6 +77,11 @@ SYSCTL_INT(_compat_linux, OID_AUTO, default_stacksize, &linux_default_stacksize, 0, "Default soft stack size resource limit, or -1 for unlimited"); +int linux_dummy_rlimits = 0; +SYSCTL_INT(_compat_linux, OID_AUTO, dummy_rlimits, CTLFLAG_RWTUN, + &linux_dummy_rlimits, 0, + "Return dummy values for unsupported Linux-specific rlimits"); + int linux_ignore_ip_recverr = 1; SYSCTL_INT(_compat_linux, OID_AUTO, ignore_ip_recverr, CTLFLAG_RWTUN, &linux_ignore_ip_recverr, 0, "Ignore enabling IP_RECVERR"); Modified: head/sys/compat/linux/linux_mib.h ============================================================================== --- head/sys/compat/linux/linux_mib.h Sun Oct 18 15:56:47 2020 (r366808) +++ head/sys/compat/linux/linux_mib.h Sun Oct 18 15:58:16 2020 (r366809) @@ -65,6 +65,7 @@ int linux_kernver(struct thread *td); extern int linux_debug; extern int linux_default_openfiles; extern int linux_default_stacksize; +extern int linux_dummy_rlimits; extern int linux_ignore_ip_recverr; extern int linux_preserve_vstatus; extern bool linux_map_sched_prio; Modified: head/sys/compat/linux/linux_misc.c ============================================================================== --- head/sys/compat/linux/linux_misc.c Sun Oct 18 15:56:47 2020 (r366808) +++ head/sys/compat/linux/linux_misc.c Sun Oct 18 15:58:16 2020 (r366809) @@ -1377,6 +1377,9 @@ static bool linux_get_dummy_limit(l_uint resource, struct rlimit *rlim) { + if (linux_dummy_rlimits == 0) + return (false); + switch (resource) { case LINUX_RLIMIT_LOCKS: case LINUX_RLIMIT_SIGPENDING: