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    SubjectRe: [PATCH] blkgetsize64 ioctl
    On Thu, 30 Aug 2001, Michael E Brown wrote:

    > And your last point about risking unexpected disk-io due to an incorrect
    > IOCTL, I would say that is a pretty unlikely in practice. First, I do
    > parameter checking on what was passed to the IOCTL, and if things don't
    > match, no io is done. Second, how likely is it that you a) call ioctl with
    > a (disk) block device, b) pass the wrong ioctl, c) pass along enough data
    > to pass the checks in the ioctl, and d) pass along a valid pointer to 512
    > bytes of data to overwrite something?

    e2fsprogs-1.23 on x86 does this.


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