From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265347AbTLHIop (ORCPT ); Mon, 8 Dec 2003 03:44:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265350AbTLHIop (ORCPT ); Mon, 8 Dec 2003 03:44:45 -0500 Received: from [159.226.5.55] ([159.226.5.55]:24247 "HELO abyss.iscas.cn") by vger.kernel.org with SMTP id S265347AbTLHIoi (ORCPT ); Mon, 8 Dec 2003 03:44:38 -0500 Message-ID: <002601c3bd67$806af440$4dc809c0@LBSERVER> From: "??" To: Subject: PROBLEM: A 2.6.0-test11 Capability LSM Module serious bug Date: Mon, 8 Dec 2003 16:44:32 +0800 MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_NextPart_000_0024_01C3BDAA.8E4914F0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2727.1300 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. ------=_NextPart_000_0024_01C3BDAA.8E4914F0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: base64 WzEuXSBBYnN0cmFjdA0KDQpXaGVuIFBPU0lYIENhcGFiaWxpdHkgTFNNIG1vZHVsZSBpc24ndCBj b21waWxlZCBpbnRvIGtlcm5lbCwgYWZ0ZXIgaW5zZXJ0aW5nIENhcGFiaWxpdHkgbW9kdWxlIGlu dG8ga2VybmVsLCBhbGwgZXhpc3RlZCBub3JtYWwgdXNlcnMgcHJvY2Vzc2VzIHdpbGwgaGF2ZSB0 b3RhbCBDYXBhYmlsaXR5IHByaXZpbGVnZXMgb2Ygc3VwZXJ1c2VyIChyb290KS4NCg0KWzIuXSBG dWxsIGRlc2NyaXB0aW9uIG9mIHRoZSBwcm9ibGVtDQoNClBPU0lYLjFlIENhcGFiaWxpdHkgaXMg 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name="capability.2.6.0-test11.patch" Content-Transfer-Encoding: quoted-printable Content-Disposition: attachment; filename="capability.2.6.0-test11.patch" --- capability.c 2003-12-07 17:06:40.228670848 +0800=0A= +++ capability.c.new 2003-12-07 17:06:51.908895184 +0800=0A= @@ -56,6 +56,36 @@=0A= /* flag to keep track of how we were registered */=0A= static int secondary;=0A= =0A= +static void recompute_capability_creds(struct task_struct *task)=0A= +{=0A= + if(task->pid <=3D 1)=0A= + return;=0A= +=0A= + task_lock(task);=0A= + task->keep_capabilities =3D 0;=0A= + =0A= + if ((task->uid && task->euid && task->suid) && = !task->keep_capabilities)=0A= + cap_clear (task->cap_permitted);=0A= + else=0A= + task->cap_permitted =3D CAP_INIT_EFF_SET;=0A= +=0A= +=0A= + if (task->euid !=3D 0){=0A= + cap_clear (task->cap_effective);=0A= + }=0A= + else{=0A= + task->cap_effective =3D CAP_INIT_EFF_SET;=0A= + }=0A= + =0A= + if(task->fsuid)=0A= + task->cap_effective &=3D ~CAP_FS_MASK;=0A= + else=0A= + task->cap_effective |=3D CAP_FS_MASK;=0A= + =0A= + task_unlock(task);=0A= + =0A= + return;=0A= +}=0A= =0A= static int __init capability_init (void)=0A= {=0A= @@ -72,6 +102,15 @@=0A= secondary =3D 1;=0A= }=0A= printk (KERN_INFO "Capability LSM initialized\n");=0A= + =0A= + struct task_struct *task;=0A= +=0A= + read_lock(&tasklist_lock);=0A= + for_each_process(task){=0A= + recompute_capability_creds(task);=0A= + }=0A= + read_unlock(&tasklist_lock);=0A= + =0A= return 0;=0A= }=0A= =0A= ------=_NextPart_000_0024_01C3BDAA.8E4914F0--