Date: Tue, 10 Jun 2003 03:38:30 -0700 From: David Schultz <das@FreeBSD.ORG> To: Robert Watson <rwatson@FreeBSD.ORG> Cc: security@FreeBSD.ORG Subject: Re: Removable media security in FreeBSD Message-ID: <20030610103830.GC14407@HAL9000.homeunix.com> In-Reply-To: <Pine.NEB.3.96L.1030608115332.67632D-100000@fledge.watson.org> References: <20030608080429.GA234@hhos.serious.ld> <Pine.NEB.3.96L.1030608115332.67632D-100000@fledge.watson.org>
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On Sun, Jun 08, 2003, Robert Watson wrote: > On the "SECURE" front -- well, it depends a bit on how robust our file > system support is. Bad UFS file systems can cause the FreeBSD kernel to > behave improperly, since it's assumed that file systems will be clean or > explicitly checked before mounting. I've never really experimented much > with our FAT file system support to see how robust it is; we have a > 5.2-RELEASE TODO list item to merge some robustness improvements from the > Darwin implementation back into FreeBSD, which suggests our implementation > could be improved on :-). FAT is somewhat less robust than UFS. In particular, its handling of media errors can lead to a tight loop in at least one place and a null pointer dereference in another. Improvements from Darwin would be much appreciated. I would be interested in knowing the licensing issues involved, if any.help
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