On Mar 15, 12:21 am, "syd.lavas...@gmail.com" <syd.lavas...@gmail.com> wrote: > The problem is that my home directory is: > > /files3/home/sahosse/ > > but I only have execution permission to the directory "home":
I confirm: $ mkdir /tmp/test $ chmod a-r /tmp/test $ mkdir /tmp/test/a $ touch /tmp/test/a/b $ ls /tmp/test/a/* /tmp/test/a/b $ ecl ECL (Embeddable Common-Lisp) 11.1.1 [...] > (directory "/tmp/test/a/*") NIL > (quit) $ chmod u+r /tmp/test $ ecl ECL (Embeddable Common-Lisp) 11.1.1 [...] > (directory "/tmp/test/a/*") (#P"/tmp/test/a/b") so, changing read permissions on a directory higher up in the tree makes everything below not reachable for "directory". The same problem arises for multi-level wildcards in the shell, i.e., "ls /tmp/test/*/ *" can't find /tmp/test/a/b either if test is not readable. I guess ECL uses the same code for wildcards as it uses for specified path components. I have checked the CLHS and no mention is made of how permissions should be handled by lisp. I guess that is implementation-dependent. >From that perspective, ECL could just define that read permission is required on all components of a path in order for it to be reachable, but since that is so incompatible with UNIX, I think they will consider this a bug as well. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
