Add options to allow adduser(8) to create ZFS datasets for each new user

[allanjude]

Summary

rmuser(8) sloppily detects ZFS, and instructs the user to manually remove the ZFS dataset

Note: rmuser does not remove the datasets for a few reasons:
a) don't want to blindly recursively destroy the dataset
b) If the user being removed does not have a dataset, we detect the parent dataset, don't want to remove the entire home directory

[roberto]

Looks OK to me. Are the three zfs related parameters asked at run-time or just taken on the command-line? Just did a test and nothing is asked, you might want to add them.

[allanjude]

In D2272#5, @roberto wrote:

Looks OK to me. Are the three zfs related parameters asked at run-time or just taken on the command-line? Just did a test and nothing is asked, you might want to add them.

Michael Lucas and I discussed it and decided it didn't make sense to pester the user with another question during the creation of each new user. Not everyone uses ZFS, so the question wouldn't make sense for them, and if you are using ZFS, you likely want the answer to always be yes.

So, you can set the parameters via /etc/adduser.conf or via the command line (-z zroot/usr/home)
The 'properties' setting is optional, in most cases the properties can just be inherited from the parent dataset, but if you want per user quotas or reservations, you need to set them per dataset.

[roberto]

OK, fine for me.