I think that chroot predates anything in kernel that would care about canonical paths. OS X manpage (first google hit for "getcwd history") claims that "The get

I think that chroot predates anything in kernel that would care about canonical paths. OS X manpage (first google hit for "getcwd history") claims that "The getwd() function appeared in 4.0BSD.", which is to this day essentially the only syscall that returns path name.