Date: Wed, 23 Oct 2002 18:38:41 -0700 (PDT) From: Robert Watson <rwatson@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 20009 for review Message-ID: <200210240138.g9O1cfwi052216@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=20009 Change 20009 by rwatson@rwatson_tislabs on 2002/10/23 18:38:02 Require that target swap devices by high integrity, since they will contain potentially high integrity data. Require Biba privilege to set the swap device. Affected files ... .. //depot/projects/trustedbsd/mac/sys/security/mac_biba/mac_biba.c#156 edit Differences ... ==== //depot/projects/trustedbsd/mac/sys/security/mac_biba/mac_biba.c#156 (text+ko) ==== @@ -333,6 +333,16 @@ } static int +mac_biba_high_single(struct mac_biba *mac_biba) +{ + + KASSERT((mac_biba->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0, + ("mac_biba_equal_single: mac_biba not single")); + + return (mac_biba->mb_single.mbe_type == MAC_BIBA_TYPE_HIGH); +} + +static int mac_biba_valid(struct mac_biba *mac_biba) { @@ -2455,8 +2465,10 @@ subj = SLOT(&cred->cr_label); obj = SLOT(label); - if (!mac_biba_dominate_single(subj, obj) || - !mac_biba_dominate_single(obj, subj)) + if (!mac_biba_privileged(subj)) + return (EPERM); + + if (!mac_biba_high_single(obj)) return (EACCES); return (0); To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe p4-projects" in the body of the message
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