[bug-gnulib] Re: robust chdir and openat (works with names longer than PATH_MAX)

[Paul Eggert]

After looking at rpl_chdir's code, one possible simplification
suggests itself: use an argument of type "char *" (not "char const
*"), and temporarily modify it by setting '/' to '\0'.  This would
avoid all the need for storage management within rpl_chdir, and would
simplify things quite a bit I would think.  It would also remove the
FIXME about arbitrary limitations.  It would of course require that we
call the function a name other than "chdir" but I think that's a good
idea for reasons discussed in my previous email.

One minor point: Solaris 9 doesn't have O_DIRECTORY.

> #  error "use this module only if your system defines PATH_MAX"

That would be the Hurd, no?  Can't we just fall back to the system
chdir in this case?