Unfortunate dynamic linking for everything
rwatson at freebsd.org
Mon Nov 24 07:49:52 PST 2003
On Mon, 24 Nov 2003, Maxim M. Kazachek wrote:
> MOST people uses /bin/sh only for rc scripts (to be correct, their
> system uses it). David O'Brien just tried to told, that NOBODY he knows
> will be REALLY impacted by performance loss, caused due dynamic /bin/sh
> linking. You will... So, because Duncan Barclay is impacted by
> performance loss due dynamic /bin/sh linking, ENTIRE FreeBSD community
> will have troubles (at least with NSS) due to static linking...
Actually, you appear to be agreeing with him, not disagreeing with him.
Duncan was pointing out that he *does* use /bin/sh as his shell, in
response to David's suggestion that on one uses it and therefore that
making it statically linked wouldn't hurt.
It strikes me that this whole conversation has gotten a little
confrontational... The "middle ground" of adding a static /sbin/sh for
scripts soudds like a reasonable choice, and has precedent in other
systems (Solaris). We can set the boot and periodic scripts to use that,
and interactive users can keep using /bin/sh. Someone must be using
/bin/sh as a shell, because apparently someone spent a lot of time adding
things like character input editing, filename completion, etc. We even
use "sh" as the default in adduser(8).
Robert N M Watson FreeBSD Core Team, TrustedBSD Projects
robert at fledge.watson.org Network Associates Laboratories
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