Date: Wed, 10 Jan 2018 07:37:28 -0500 (EST) From: Daniel Feenberg <feenberg@nber.org> To: Dave B <g8kbvdave@googlemail.com> Cc: Ed Maste <emaste@freebsd.org>, freebsd-questions@freebsd.org Subject: =?UTF-8?Q?Re=3A_32_bit_fix=3F_=28Was_Re=3A_Meltdown_=E2=80?= =?UTF-8?Q?=93_Spectre=29?= Message-ID: <alpine.LRH.2.21.1801100728550.7115@sas1.nber.org> In-Reply-To: <6523f352-c895-e488-8006-76495907745a@googlemail.com> References: <mailman.94.1515499202.64522.freebsd-questions@freebsd.org> <2e86bfd9-9141-2872-1946-0e9d26326433@googlemail.com> <CAPyFy2Ce%2B=tZpDMo6kUdpYXAw-=8CRYUFNtinUeGe-Lnp=tYsA@mail.gmail.com> <6523f352-c895-e488-8006-76495907745a@googlemail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, 10 Jan 2018, Dave B via freebsd-questions wrote: > Hi Ed. > > Understood. There's "a lot" of FreeBSD based kit out there, running on > 32 bit hardware. A lot of NAS's for one. (I don’t suppose any of > those commercial "appliances" will ever be updated though.) > Are NAS's a worry? Wouldn't the typical NAS login have root already? Why would anyone other than the system admin have a login on the NAS box at all? If the NAS isn't used as a web browser or MUA, how would the malware get to be run by an unprivileged user? I understand that the vulnerability can be demonstrated in Javascript, but this would be an attack on the client running with the privileges of the web browser. That isn't something that would happen on the typical system services appliance such as a NAS box, switch, or router. daniel feenberg NBER From owner-freebsd-questions@freebsd.org Wed Jan 10 13:01:26 2018 Return-Path: <owner-freebsd-questions@freebsd.org> Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 99060E7F0C9 for <freebsd-questions@mailman.ysv.freebsd.org>; Wed, 10 Jan 2018 13:01:26 +0000 (UTC) (envelope-from v.dol_s@hotmail.com) Received: from EUR01-DB5-obe.outbound.protection.outlook.com (mail-oln040092064039.outbound.protection.outlook.com [40.92.64.39]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (Client CN "mail.protection.outlook.com", Issuer "Microsoft IT SSL SHA2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 0DC1E7369B for <freebsd-questions@freebsd.org>; Wed, 10 Jan 2018 13:01:25 +0000 (UTC) (envelope-from v.dol_s@hotmail.com) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hotmail.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=rQ+uevW0e5koeZfrhUhArZxdfJRfvvU3f/2zlHYLUVk=; b=iyqEypGFalg8j9EfMaDMDndFTuDM2psKOdzCbldyBwVrZHiUIcOX9Z9oWtHstS5KXo2JGU22hB2W/ouf+fvtcMazEZLud/fk+EwCMay/v+8XryTe+xMkgf07E2Lzk12rneS+YqyoFcRf2P+0o16bWPX7AXawXOzlg/Uke7qoxDUM+Cp9A73q5l7k2z30tS0BTZCuwN0hi4FJkxXY9rfJ9XG8kQNpzp4SBFyOM6aciVZYKgw7Jgm8PqYIVuFbzyZuMMWJzm0ocoZ0OxKk9G3r+e2jupIjWR9zD/N4a0TVfCVMkKKaoNFgfvEx7/dZerKJAGaLGF60EG7F/OWaOH7cQA== Received: from HE1EUR01FT049.eop-EUR01.prod.protection.outlook.com (10.152.0.57) by HE1EUR01HT219.eop-EUR01.prod.protection.outlook.com (10.152.1.114) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.20.345.12; Wed, 10 Jan 2018 13:01:23 +0000 Received: from AM5PR0902MB1923.eurprd09.prod.outlook.com (10.152.0.54) by HE1EUR01FT049.mail.protection.outlook.com (10.152.0.221) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.20.345.12 via Frontend Transport; Wed, 10 Jan 2018 13:01:23 +0000 Received: from AM5PR0902MB1923.eurprd09.prod.outlook.com ([fe80::e4a7:bead:3f27:7fd8]) by AM5PR0902MB1923.eurprd09.prod.outlook.com ([fe80::e4a7:bead:3f27:7fd8%13]) with mapi id 15.20.0386.008; Wed, 10 Jan 2018 13:01:23 +0000 From: Vitalio D <v.dol_s@hotmail.com> To: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: where to find exit(int) function implementation Thread-Topic: where to find exit(int) function implementation Thread-Index: AQHTihKQe0z8Ge0DZk6xf6VVVCNQPA== Date: Wed, 10 Jan 2018 13:01:23 +0000 Message-ID: <AM5PR0902MB19231F79EA283E2CE7B17310DC110@AM5PR0902MB1923.eurprd09.prod.outlook.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-incomingtopheadermarker: OriginalChecksum:E0AF2726A4EFD77499AA904362635F6F058D430F2302E29F57D3AD7B74B23B9E; UpperCasedChecksum:318959DC3E7F87EFACB0DC3C5FED35A7BAFAC4094A1A7BDC9FAE374304F610FC; SizeAsReceived:6908; Count:44 x-ms-exchange-messagesentrepresentingtype: 1 x-tmn: [tpyGuNk9RqruQwYY2uoBnVZAMUVAy/4K] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; HE1EUR01HT219; 6:fW4nLbwFOJqi1jgaKrng8Nvw6mV8nCNk1NNAhySCfVvaPqCBVf1ATmP7sTLEP2hO2xOf0Tm72Gt8jWZtTZslS1VdBocbjKpd0HiYD5SiSV49rKH9pwbN5mBosxkSPKUGLOMcKyB0TNQvWLrGDVBhS4nIUqbgDV7rged+lfjkBDH+tW29Yc2iuU6OC6EJ/tzopBjRfnlkWbb2U/GmRORpxLlRhy/npNGmQ5DUbDQySt1dSEZFGkoVh94MmwSxG+5JLizFEF1ZpbmHmsrkAHLtwN7PdU1BwZRasjfohJ/LKEnCkDg9ESRcikCNtmk29Ow5PMMEE9Exb+srw81fLsqJhVui8Auk1NwbNpe7TF5S6Ts=; 5:KuCxJztEpnKPZNql0QFtMZhig7FtIqxg4P7y1ypa82a2IbizP9t3LAWqeNOtKqicpW2ajtm9mkRt9c3QX5GW1RTkLZBTtO788RHOQDKNYd2S/Uk5UINGvhx2znlvqbl5Eg9lH3lfsEV6LL/7F9IZ6e1P5BuZvG85jKnMGf3UyyA=; 24:xrH5w0wAg1mUVe1whK1pddFGLVRET7zhf/UUPDTF2bpz6U/CvlHxe5px+vxpSpX5y0BQzPoN/dB6bfeg5S5b7O64hrbxme06pVIEkplo6m8=; 7:rS80xCL/dl9itJEDOKOm8kSEMFaEr4WzAosk3B1iDUjX67BowOL+3c1djUBX1dX1owQEJa0V+EmiuzjgongmKSdwb7R81tIFjS9l7czvIfhNdE+WZ5oho73aaSaG4hgndcoy7Qc+4Y2azZYOBOxtWe2gORDos8Cm4fh0MXfmEm7Mcwk9gjE3Ely4M4NFDxnfz6hUF0DVBu0aAB8AOQj1y658NQWf+JDbjeLw2PY6P0mHECeXx4KOUOsKdHgQB5AH x-incomingheadercount: 44 x-eopattributedmessage: 0 x-microsoft-antispam: UriScan:; BCL:0; PCL:0; RULEID:(7020051)(201702061074)(5061506573)(5061507331)(1603103135)(2017031320274)(2017031324274)(2017031323274)(2017031322404)(1603101448)(1601125374)(1701031045); SRVR:HE1EUR01HT219; x-ms-traffictypediagnostic: HE1EUR01HT219: x-ms-office365-filtering-correlation-id: c182c9df-319b-430f-88d5-08d5582a4028 x-exchange-antispam-report-cfa-test: BCL:0; PCL:0; RULEID:(444000031); SRVR:HE1EUR01HT219; BCL:0; PCL:0; RULEID:(100000803101)(100110400095); SRVR:HE1EUR01HT219; x-forefront-prvs: 0548586081 x-forefront-antispam-report: SFV:NSPM; SFS:(7070007)(98901004); DIR:OUT; SFP:1901; SCL:1; SRVR:HE1EUR01HT219; H:AM5PR0902MB1923.eurprd09.prod.outlook.com; FPR:; SPF:None; LANG:; spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: hotmail.com X-MS-Exchange-CrossTenant-Network-Message-Id: c182c9df-319b-430f-88d5-08d5582a4028 X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Jan 2018 13:01:23.0437 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1EUR01HT219 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions <freebsd-questions.freebsd.org> List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions/>; List-Post: <mailto:freebsd-questions@freebsd.org> List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help> List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=subscribe> X-List-Received-Date: Wed, 10 Jan 2018 13:01:26 -0000 Hello,=0A= =0A= How and where void _exit(int) is implemented? I've started=0A= with exit(int) defined in exit.c un stdlib, but I've got stuck at=0A= unistd.h where void _exit(int) __dead2;=0A= After that I couldn't find anything by running=0A= find /usr/src -name "*.c" -exec grep " _exit(int" /dev/null {} \;=0A= =0A= So I guess there is some unix convention magic involved but=0A= I can't point which one. Can someone be kind and explain or point=0A= out a resource where this trick is explained?=0A= =0A= Regards,=0A= Vitalio=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?alpine.LRH.2.21.1801100728550.7115>