[H-GEN] weird permissions problem

[Anthony Towns]

On Mon, Jan 11, 2010 at 02:47:10PM +1000, Clinton Roy wrote:
> Hi Troy,
> > The permissions of /home are
> > drwx------ ?43 root root ?4096 2010-01-11 11:24 home
> This is probably the problem.
> Your /home needs rx for group and other, so chmod go+rx /home and I
> think your problem will be fixed.

In particular, if you don't have "r" permissions on a directory you can't
see what's in it (ie, "ls" won't work), and without "x" permissions
on a directory you can't access anything in the directory (ie, "cd"
won't work).

To see this in a little more detail, try the following in an empty
directory somewhere:

  mkdir read-only exec-only
  date >read-only/some-file
  date >exec-only/some-file

  chmod 400 ./read-only
  chmod 100 ./exec-only
  ls -l

  ls -l ./read-only           # works, mostly
  cat ./read-only/some-file   # fails

  ls -l ./exec-only           # fails
  cat ./exec-only/some-file   # works

Cheers,
aj

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