From nobody Sun Jun 20 10:02:32 2021 X-Original-To: ports-bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 120FF11D912D for ; Sun, 20 Jun 2021 10:02:32 +0000 (UTC) (envelope-from bugzilla-noreply@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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4G77WC73Cbz4kp4 for ; Sun, 20 Jun 2021 10:02:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id DB7F927C28 for ; Sun, 20 Jun 2021 10:02:31 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 15KA2Vww035180 for ; Sun, 20 Jun 2021 10:02:31 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 15KA2VQk035179 for ports-bugs@FreeBSD.org; Sun, 20 Jun 2021 10:02:31 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: ports-bugs@FreeBSD.org Subject: [Bug 256728] rc.subr: ${name}_user uses "su -m" that invokes root shell instead of /bin/sh Date: Sun, 20 Jun 2021 10:02:32 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Ports Framework X-Bugzilla-Version: Latest X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: eugen@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: portmgr@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cc Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Ports bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-ports-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-ports-bugs@freebsd.org X-BeenThere: freebsd-ports-bugs@freebsd.org MIME-Version: 1.0 X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D256728 Bug ID: 256728 Summary: rc.subr: ${name}_user uses "su -m" that invokes root shell instead of /bin/sh Product: Ports & Packages Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: Ports Framework Assignee: portmgr@FreeBSD.org Reporter: eugen@freebsd.org CC: ports-bugs@FreeBSD.org The port net/p2p/transmission-daemon is an example of service that utilizes _user rc.conf setting. Also, it supports writing debugging logs to pre-opened (redirected to a file) STDERR by means of environment variable TR_DEBUG_FD=3D2 but our framework uses "su -m" for such services executing = root shell that defaults to stock csh (contrib/tcsh) that closes its file descri= ptor 2 at start. Note there is some kind of work-around if we do not use login classes and/or limits for the service, then add to /etc/rc.conf transmission_chroot=3D"/" So "chroot -u transmission /" is used to substitute user instead of "su -m"= and chroot(8) is documented not to use root shell but SHELL=3D/bin/sh. And /bin= /sh keeps redirected STDERR open in such case. --=20 You are receiving this mail because: You are on the CC list for the bug.=