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Passwd
======
User is looked up using 'getpwnam()' call, which usually looks into
'/etc/passwd' file, but depending on NSS
[http://en.wikipedia.org/wiki/Name_Service_Switch] configuration it may also
look up the user from eg. LDAP database.
Most commonly used as a user database.
The lookup is by default done in the auth worker processes. If you have only a
small local passwd file, you can avoid having extra auth worker processes by
disabling it:
---%<-------------------------------------------------------------------------
userdb {
driver = passwd
args = blocking=no
}
---%<-------------------------------------------------------------------------
Field overriding and extra fields (obsolete in v2.1+)
-----------------------------------------------------
It's possible to override fields from passwd and add <extra fields>
[UserDatabase.ExtraFields.txt] with templates, but in v2.1+ it's done in a
better way by using override_fields. For example:
---%<-------------------------------------------------------------------------
userdb {
driver = passwd
# Pre-v2.1:
#args = home=/var/mail/%u mail=maildir:/var/mail/%u/Maildir
# v2.1+:
override_fields = home=/var/mail/%u mail=maildir:/var/mail/%u/Maildir
}
---%<-------------------------------------------------------------------------
This uses the UID and GID fields from passwd, but home directory is overridden.
Also the default <mail_location> [MailLocation.txt] setting is overridden.
Passwd as a password database
-----------------------------
Many systems use shadow passwords nowadays so passwd doesn't usually work as a
password database. BSDs are an exception to this, they still set the password
field even with shadow passwords.
With FreeBSD, passwd doesn't work as a password database because the password
field is replaced by a '*'. But you can use <Passwd-file>
[AuthDatabase.PasswdFile.txt].
(This file was created from the wiki on 2019-06-19 12:42)
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