Those problems were known before Linux was a thing, which is part of the reasons only root was historically allowed to do a chroot(). Even Unix v7 insists on c

Those problems were known before Linux was a thing, which is part of the reasons only root was historically allowed to do a chroot(). Even Unix v7 insists on chroot() being only called by the root user (the chroot syscall is in /usr/sys/sys/sys4.c).