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    SubjectRe: permissions not honoured by /bin/pwd aka getcwd
    On Thu, 24 Feb 2000, Harald Kirsch wrote:

    > On Thu, Feb 24, 2000 at 08:18:17AM -0500, Richard B. Johnson wrote:
    > > On Thu, 24 Feb 2000, Harald Kirsch wrote:
    > > > Why is /bin/pwd (or getcwd) allowed to return an output in the following
    > > > command sequence?
    > > >
    > > >
    > > > % mkdir -p really/closed; cd really/closed; chmod 000 ..; /bin/pwd
    > > > /home1_phys/kir/sunHome/tmp/really/closed
    > > >
    > > > Harald Kirsch
    > >
    > > Because permissions don't prevent you from reading a directory.
    >
    > Strange answer. What is `chmod a-r some/directory' good for if not to
    > forbid reading a directory?
    >
    > Harald Kirsch

    If prevents non-root from reading (i.e. entering) the directory. You
    are never going to hide the directory contents from root.

    Here is a non-root user:

    Script started on Thu Feb 24 09:07:10 2000
    $ pwd
    /tmp
    $ mkdir foo
    $ mkdir foo/bat
    $ ls
    foo typescript
    $ ls foo/*
    $ cd foo
    $ ls
    bat
    $ cd ..
    $ ls
    foo typescript
    $ chmod 0 foo
    $ ls
    foo typescript
    $ cd foo
    bash: foo: Permission denied
    $ ls foo/*
    ls: foo/*: Permission denied
    $ exit
    exit

    Script done on Thu Feb 24 09:08:37 2000


    Cheers,
    Dick Johnson

    Penguin : Linux version 2.3.41 on an i686 machine (800.63 BogoMips).


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