pam_timestamp

PAM_TIMESTAMP(8)               Linux-PAM Manual               PAM_TIMESTAMP(8)

NAME
       pam_timestamp - Authenticate using cached successful authentication
       attempts

SYNOPSIS
       pam_timestamp.so [timestampdir=directory] [timestamp_timeout=number]
                        [verbose] [debug]

DESCRIPTION
       In a nutshell, pam_timestamp caches successful authentication attempts,
       and allows you to use a recent successful attempt as the basis for
       authentication. This is similar mechanism which is used in sudo.

       When an application opens a session using pam_timestamp, a timestamp
       file is created in the timestampdir directory for the user. When an
       application attempts to authenticate the user, a pam_timestamp will
       treat a sufficiently recent timestamp file as grounds for succeeding.

OPTIONS
       timestampdir=directory
           Specify an alternate directory where pam_timestamp creates
           timestamp files.

       timestamp_timeout=number
           How long should pam_timestamp treat timestamp as valid after their
           last modification date (in seconds). Default is 300 seconds.

       verbose
           Attempt to inform the user when access is granted.

       debug
           Turns on debugging messages sent to syslog(3).

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

RETURN VALUES
       PAM_AUTH_ERR
           The module was not able to retrieve the user name or no valid
           timestamp file was found.

       PAM_SUCCESS
           Everything was successful.

       PAM_SESSION_ERR
           Timestamp file could not be created or updated.

NOTES
       Users can get confused when they are not always asked for passwords
       when running a given program. Some users reflexively begin typing
       information before noticing that it is not being asked for.

EXAMPLES
           auth sufficient pam_timestamp.so verbose
           auth required   pam_unix.so

           session required pam_unix.so
           session optional pam_timestamp.so

FILES
       /var/run/pam_timestamp/...
           timestamp files and directories

SEE ALSO
       pam_timestamp_check(8), pam.conf(5), pam.d(5), pam(7)

AUTHOR
       pam_timestamp was written by Nalin Dahyabhai.

Linux-PAM Manual                  05/18/2017                  PAM_TIMESTAMP(8)