[BusyBox] Live updating busybox?

[Bastian Blank]

On Mon, Nov 17, 2003 at 02:48:12PM +0100, Steven Scholz wrote:
> One suggestion I got was to store the new version of busybox in let's say 
> /bin/busybox.new and then "mv /bin/busybox.new /bin/busybox" where "mv" 
> must not be the busybox applet but a standalone binary.

the first is right, the second is not, rename(2) is an atomar operation.

> 2.) Should I kill busybox inetd, httpd, telnetd etc before updating busybox?

You never write into the living binary, so the in-memory footprint is in
sync with the on-disc binary even if it is unlink()ed.

> 3.) When updating busybox, is it better to have soft- or hardlinks to
>     /bin/busybox for all the applications?

soft, as they don't need updates.

Bastian

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