bug#27169: eshell/sudo doesn't work with protected directories

[npostavs]

tags 27169 unreproducible
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Yegor Timoshenko <yegortimoshenko@gmail.com> writes:

> Expected output:
>
> b
>
> Instead I get:
>
> /bin/ls: cannot open directory 'a': Permission denied
>
> sudo cat a/b, etc. also don't work. I've found this problem while trying to 
> cat my /etc/sudoers file:
>
> $ sudo cat /etc/sudoers
> Opening input file: Permission denied, /etc/sudoers

Works for me, can you reproduce this from 'emacs -Q'?  What Emacs
version are you using?

    Welcome to the Emacs shell

    ~/src $ cd /tmp
    /tmp $ mkdir a
    /tmp $ touch a/b
    /tmp $ sudo chmod 700 a
    [sudo] password for npostavs: 
    /tmp $ sudo chown root:wheel a
    [sudo] password for npostavs: 
    /tmp $ sudo ls a
    [sudo] password for npostavs: 
    b
    /tmp $