From owner-p4-projects Sat Aug 24 10:10:59 2002 Delivered-To: p4-projects@freebsd.org Received: by hub.freebsd.org (Postfix, from userid 32767) id 7967037B401; Sat, 24 Aug 2002 10:10:55 -0700 (PDT) Delivered-To: perforce@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 368B337B400 for ; Sat, 24 Aug 2002 10:10:55 -0700 (PDT) Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id E5E6943E6E for ; Sat, 24 Aug 2002 10:10:54 -0700 (PDT) (envelope-from bb+lists.freebsd.perforce@cyrus.watson.org) Received: from freefall.freebsd.org (perforce@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.4/8.12.4) with ESMTP id g7OHAsJU061594 for ; Sat, 24 Aug 2002 10:10:54 -0700 (PDT) (envelope-from bb+lists.freebsd.perforce@cyrus.watson.org) Received: (from perforce@localhost) by freefall.freebsd.org (8.12.4/8.12.4/Submit) id g7OHAsAj061591 for perforce@freebsd.org; Sat, 24 Aug 2002 10:10:54 -0700 (PDT) Date: Sat, 24 Aug 2002 10:10:54 -0700 (PDT) Message-Id: <200208241710.g7OHAsAj061591@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: perforce set sender to bb+lists.freebsd.perforce@cyrus.watson.org using -f From: Robert Watson Subject: PERFORCE change 16510 for review To: Perforce Change Reviews Sender: owner-p4-projects@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG http://people.freebsd.org/~peter/p4db/chv.cgi?CH=16510 Change 16510 by rwatson@rwatson_paprika on 2002/08/24 10:10:37 Add 'security.mac.mmap_revocation' to enable/disable revocation of mmaps on subject relabel. Default to enable (current behavior). Affected files ... .. //depot/projects/trustedbsd/mac/sys/kern/kern_mac.c#259 edit Differences ... ==== //depot/projects/trustedbsd/mac/sys/kern/kern_mac.c#259 (text+ko) ==== @@ -164,6 +164,10 @@ static int mac_vnode_label_cache_misses = 0; SYSCTL_INT(_security_mac, OID_AUTO, vnode_label_cache_misses, CTLFLAG_RD, &mac_vnode_label_cache_misses, 0, "Cache misses on vnode labels"); +static int mac_mmap_revocation = 1; +SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation, CTLFLAG_RW, + &mac_mmap_revocation, 0, "Revoke mmap access to files on subject " + "relabel"); static int mac_mmap_revocation_via_cow = 0; SYSCTL_INT(_security_mac, OID_AUTO, mmap_revocation_via_cow, CTLFLAG_RW, &mac_mmap_revocation_via_cow, 0, "Revoke mmap access to files via " @@ -2209,6 +2213,9 @@ vm_ooffset_t offset; struct vnode *vp; + if (!mac_mmap_revocation) + return; + vm_map_lock_read(map); for (vme = map->header.next; vme != &map->header; vme = vme->next) { if (vme->eflags & MAP_ENTRY_IS_SUB_MAP) { To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe p4-projects" in the body of the message