Enable critical_filesystems_zfs.

Split the local disk availability step into two phases to allow scripts
that pre-populate parts of the system (e.g. a tmpfs based /var) an
easy place to plug in like:

# REQUIRE: mountcritlocal
# BEFORE: MOUNTCRITLOCAL

This also cleans up the existing special handling a bit by separating it
into new scripts. All later scripts now depend on MOUNTCRITLOCAL.
Discussed on tech-userlevel some time ago.

Cause rc to abort if mounting any of the critical local filesystems fails
rather than just ignoring the error.

Don't bother attempting to clear the contents of /var/run if /var/run
does not exist.

In that case the mkdir of /var/run/lvm would have failed - correct that
by using mkdir -p (which as a side effect will ensure /var/run exists
and is available for later scripts to use if for some reason it did not exist.)

branches: 1.14.6;
'file system' for consistency with documentation (instead of 'filesystem').

branches: 1.13.12; 1.13.24;
Use chown now when it's available without /usr mounted.

Use /rescue/chown not chown from /usr/sbin which might not be available in
time of running this script.

XXX. Why is chown in /usr/sbin ? it should be moved to /sbin

Allow operator to use lvm in read-only mode. Switch LVM lock dir to
/var/run/lvm and create it in rc.d/mountcritlocal. Fix dm control device
permissions to allow rw for operator.

Test if we are running lvm commands as operator and if that it's true do not
create vg backups and do not print confusing warning.

Split fsck during boot into two phases. Check the root file system
first, mount root and run the various disk providers. Add swap and
check the remaining file systems after that.
This breaks the dependency cycle for lvm, which needs writeable /dev.
Depend on rndctl in cgd.

branches: 1.9.28;
goodbye uucp

Add an _rc_subr_loaded variable, set to ":" by rc.subr. Scripts can use this
for a speedup by doing:
$_rc_subr_loaded . /etc/rc.subr

don't bother warning or supporting obsolete $critical_filesystems_beforenet
or $critical_filesystems; postinstall now checks for these

Replace $critical_filesystems_beforenet with $critical_filesystems_local .
Replace $critical_filesystems with $critical_filesystems_remote .

The new names are now consistent with the type argument that
mount_critical_filesystems() is called with, and allows for other types to
be easily supported by that function.

For backwards compatibility purposes, if the now obsolete variable is defined
(even empty), it takes precedence over the new form, and you will be warned.
If you want to stop the warnings, update your rc.conf(5) settings!

clarify purposes

move recreating /var/run/utmp from mountcritlocal (where /var/run is
purged but /usr/bin/install is not available) to sysdb.
problem noted by Matthias Drochner.

* add new dummy dependancy `NETWORK' to be REQUIREd by services which need
networking to be operational before starting, and use as appropriate.
NETWORK depends upon network and dhclient.
* move the guts of systemfs into mountcritlocal
* replace the dependancy on systemfs with mountcritremote, and remove the
former.
* SERVERS now also depends upon ppp

Notes:
* dhclient (and others) needs /var to be a $critical_filesystem_beforenet
* dhclient now starts before syslogd (because the latter needs /usr, and
/usr might need dhclient to be mounted)

Should fix PRs:
[install/9853] [bin/10002] [misc/10349] [port-i386/10633] [misc/10641]

branches: 1.2.4;
Use load_rc_config() (from rc.subr) instead of sourcing /etc/rc.conf.
This allows us or a user to change the configuration file method in
one place - rc.subr - without having to edit all of the rc.d/* files.

branches: 1.1.1;
Initial revision