Messages in this thread | | | Date | Sun, 12 Aug 2007 13:57:53 -0700 | From | "H. Peter Anvin" <> | Subject | Re: Use of directories to hold root? |
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Jan Engelhardt wrote: > On Aug 12 2007 21:23, Al Viro wrote: >>> pivot_root is atomic afaict, for `mount --move` (which I think Al meant >>> which MS_MOVE - or some C program using mount(2) of your own), you'd >>> need multiple calls to mount. >> Move itself is done by a single syscall anyway... >> > Yes, but you need needed 2 mounts, 1 chdir and one chroot. Plus, you > have not freed the data in the rootfs. (Well, neither does > pivot_root, but run-init from klibc will.)
Yes, which is why it is highly inappropriate for this particular case, since they have multiple roots that they presumably don't want deleted!
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