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PAM_USERDB(8)                  Linux-PAM Manual                  PAM_USERDB(8)

NAME
       pam_userdb - PAM module to authenticate against a db database

SYNOPSIS
       pam_userdb.so db=/path/database [debug] [crypt=[crypt|none]] [icase]
                     [dump] [try_first_pass] [use_first_pass] [unknown_ok]
                     [key_only]

DESCRIPTION
       The pam_userdb module is used to verify a username/password pair
       against values stored in a Berkeley DB database. The database is
       indexed by the username, and the data fields corresponding to the
       username keys are the passwords.

OPTIONS
       crypt=[crypt|none]
           Indicates whether encrypted or plaintext passwords are stored in
           the database. If it is crypt, passwords should be stored in the
           database in crypt(3) form. If none is selected, passwords should be
           stored in the database as plaintext.

       db=/path/database
           Use the /path/database database for performing lookup. There is no
           default; the module will return PAM_IGNORE if no database is
           provided.

       debug
           Print debug information.

       dump
           Dump all the entries in the database to the log. Don't do this by
           default!

       icase
           Make the password verification to be case insensitive (ie when
           working with registration numbers and such). Only works with
           plaintext password storage.

       try_first_pass
           Use the authentication token previously obtained by another module
           that did the conversation with the application. If this token can
           not be obtained then the module will try to converse. This option
           can be used for stacking different modules that need to deal with
           the authentication tokens.

       use_first_pass
           Use the authentication token previously obtained by another module
           that did the conversation with the application. If this token can
           not be obtained then the module will fail. This option can be used
           for stacking different modules that need to deal with the
           authentication tokens.

       unknown_ok
           Do not return error when checking for a user that is not in the
           database. This can be used to stack more than one pam_userdb module
           that will check a username/password pair in more than a database.

       key_only
           The username and password are concatenated together in the database
           hash as 'username-password' with a random value. if the
           concatenation of the username and password with a dash in the
           middle returns any result, the user is valid. this is useful in
           cases where the username may not be unique but the username and
           password pair are.

MODULE TYPES PROVIDED
       The auth and account module types are provided.

RETURN VALUES
       PAM_AUTH_ERR
           Authentication failure.

       PAM_AUTHTOK_RECOVERY_ERR
           Authentication information cannot be recovered.

       PAM_BUF_ERR
           Memory buffer error.

       PAM_CONV_ERR
           Conversation failure.

       PAM_SERVICE_ERR
           Error in service module.

       PAM_SUCCESS
           Success.

       PAM_USER_UNKNOWN
           User not known to the underlying authentication module.

EXAMPLES
           auth  sufficient pam_userdb.so icase db=/etc/dbtest.db

SEE ALSO
       crypt(3), pam.conf(5), pam.d(5), pam(7)

AUTHOR
       pam_userdb was written by Cristian Gafton >gafton@redhat.com<.

Linux-PAM Manual                  06/18/2013                     PAM_USERDB(8)

Czas wygenerowania: 0.00041 sek.


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