Re: dhclient-script, hooks, and changing the environment
martin f krafft wrote:
Anything else? Do you know of packages that rely on this
functionality? Do you have scripts of your own which modify the
environment? Would you please be so kind as to explain to me what
they do, and help me figure out whether there isn't a better way for
them?
My suggestion:
* Look at any package in unstable that provides files in
</etc/dhcp3/dhclient-*-hooks.d>. I suspect this won't be many to
look at. Check that none of these packages do anything weird.
* Don't include this (stupid) functionality in netconf.
* Solve any issues that occur on a case by case basis, e.g. it
sounds like Theodore Tso's issue can be solved within netconf.
* Document this somewhere.
I suspect anything that relies on changing environment variables like
this solves a problem that would better be solved within netconf itself.
However this is going to have to be determined on a case by case basis.
On my installed system (ok, this is Ubuntu Hardy but I suspect Debian
will be similar if not identical):
/etc/dhcp3/dhclient-enter-hooks.d:
total 12
-rwxr-xr-x 1 root root 1096 2008-03-21 21:56 avahi-autoipd*
-rw-r--r-- 1 root root 1018 2008-04-03 00:37 debug
-rwxr-xr-x 1 root root 1753 2008-04-03 08:30 samba*
/etc/dhcp3/dhclient-exit-hooks.d:
total 16
-rw-r--r-- 1 root root 1024 2008-04-03 00:37 debug
-rw-r--r-- 1 root root 802 2008-03-08 07:37 ntpdate
-rwxr-xr-x 1 root root 1097 2008-03-21 21:56 zzz_avahi-autoipd*
-rw-r--r-- 1 root root 333 2007-10-24 00:37 zzzz_dhcdbd
At a quick glance none of these appear to change any environment
variables. They are read-only operations only.
Brian May
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