Re: Removable media security in FreeBSD

From: David Schultz (das_at_FreeBSD.ORG)
Date: 06/10/03

  • Next message: Fernando Schapachnik: "Re: Removable media security in FreeBSD" 
    Date: Tue, 10 Jun 2003 03:38:30 -0700
To: Robert Watson <rwatson@FreeBSD.ORG>

    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.
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  • Next message: Fernando Schapachnik: "Re: Removable media security in FreeBSD"

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