On Mar 15, 6:44 pm, Dima Pasechnik <dimp...@gmail.com> wrote: > In gmane.comp.mathematics.sage.devel, you wrote: > > 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. > > I've sent this to ecls-l...@lists.sourceforge.net > as a bug report.
Btw, you run into similar problems if you happen to have HOME set but the directory doesn't exist (e.g. because /home isn't mounted); ECL insists on being at least able to *read* your home directory. -leif -- 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
