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    SubjectRe: [PATCH -mm 1/2] user namespace : add unshare
    On Fri, 08 Jun 2007 17:14:07 +0200
    Cedric Le Goater <> wrote:

    > Basically, it will allow a process to unshare its user_struct table, resetting
    > at the same time its own user_struct and all the associated accounting.
    > A new root user (uid == 0) is added to the user namespace upon creation. Such
    > root users have full privileges and it seems that theses privileges should be
    > controlled through some means (process capabilities ?)

    This second paragraph is distressingly indecisive. How much thought has
    gone into this??

    For a start, it seems wrong for the kernel to hardwire knowledge about UID
    0 in this fashion.

    I'd have thought that a better model for user-namespace unsharing would be
    to do a copy-by-value of the entire namespace, then permit a
    suitably-privileged application to go through and kill off any unwanted
    users from the now-unshared user namespace.

    Or maybe just remove that "Insert new root user" altogether? What would
    then go wrong?

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      Last update: 2007-06-08 21:27    [W:0.024 / U:27.320 seconds]
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