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scripts/mkusers: allow users with no password value set

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The following allows a user definition to specify that a created user
entry should not have a password value set. Original implementation
allowed a user definition to provide a password value of "=" (no quotes)
to generate a crypt-encoded empty string value. In some cases, it may be
desired to have no value specified for a user's password. By using a
value "-" for a password, no value will be set in the shadow value.

An example when this can be used is when logging into a terminal.
Logging into a session with an encoded empty password will prompt a user
to enter a password since it does not know the password is empty. If the
password field blank, a login session will not prompt for a password.

Signed-off-by: James Knight <james.knight@rockwellcollins.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
James Knight
2015-05-23 13:51:37 -04:00
committed by Thomas Petazzoni
parent e6c57b580d
commit 8d972df185
2 changed files with 5 additions and 1 deletions
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3
docs/manual/makeusers-syntax.txt
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@@ -31,7 +31,8 @@ Where:
then login is disabled. If prefixed with +=+, then it is interpreted
as clear-text, and will be crypt-encoded (using MD5). If prefixed with
+!=+, then the password will be crypt-encoded (using MD5) and login
will be disabled. If set to +*+, then login is not allowed.
will be disabled. If set to +*+, then login is not allowed. If set to
+-+, then no password value will be set.
- +home+ is the desired home directory for the user. If set to '-', no
home directory will be created, and the user's home will be +/+.
Explicitly setting +home+ to +/+ is not allowed.