[Bug 194412] [NEW] mksmbpasswd, called from samba postinst, should not create Samba user for user with uid <1000

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When installing the samba package, the postinst script may be calling
mksmbpasswd to import the Unix user into the Samba user backend.  This
is controlled by the debconf variable samba/generate_smbpasswd, which
currently default to false.

The way mksmbpasswd is called is indiscriminate, and will create a Samba
user for all entries returned by getent passwd.  This include system
user (those with uid < 1000) such as root, games, lp, etc.  While these
users do not have a Samba password set (and hence cannot be used to
connect to the Samba service), they are still very much unlikely to be
useful in the context of Samba and should not be imported.

The best would be for mksmbpasswd to import only user with uid >= 1000,
or at least have a blacklist of user it should not import.

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New

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mksmbpasswd, called from samba postinst, should not create Samba user for user with uid <1000
https://bugs.edge.launchpad.net/bugs/194412
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