path: root/modules/pam_timestamp/pam_timestamp.8

.\"     Title: pam_timestamp
.\"    Author: [see the "AUTHOR" section]
.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/>
.\"      Date: 06/16/2009
.\"    Manual: Linux-PAM Manual
.\"    Source: Linux-PAM Manual
.\"  Language: English
.\"
.TH "PAM_TIMESTAMP" "8" "06/16/2009" "Linux-PAM Manual" "Linux\-PAM Manual"
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.\" * MAIN CONTENT STARTS HERE *
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.SH "Name"
pam_timestamp \- Authenticate using cached successful authentication attempts
.SH "Synopsis"
.fam C
.HP \w'\fBpam_timestamp\&.so\fR\ 'u
\fBpam_timestamp\&.so\fR [timestamp_timeout=\fInumber\fR] [verbose] [debug]
.fam
.SH "DESCRIPTION"
.PP
In a nutshell,
\fIpam_timestamp\fR
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
\fBsudo\fR\&.
.PP
When an application opens a session using
\fIpam_timestamp\fR, a timestamp file is created in the
\fItimestampdir\fR
directory for the user\&. When an application attempts to authenticate the user, a
\fIpam_timestamp\fR
will treat a sufficiently recent timestamp file as grounds for succeeding\&.
.SH "OPTIONS"
.PP
\fBtimestamp_timeout=\fR\fB\fInumber\fR\fR
.RS 4
How long should pam_timestamp treat timestamp as valid after their last modification date (in seconds)\&. Default is 300 seconds\&.
.RE
.PP
\fBverbose\fR
.RS 4
Attempt to inform the user when access is granted\&.
.RE
.PP
\fBdebug\fR
.RS 4
Turns on debugging messages sent to
\fBsyslog\fR(3)\&.
.RE
.SH "MODULE TYPES PROVIDED"
.PP
The
\fBauth\fR
and
\fBsession\fR
module types are provided\&.
.SH "RETURN VALUES"
.PP
PAM_AUTH_ERR
.RS 4
The module was not able to retrieve the user name or no valid timestamp file was found\&.
.RE
.PP
PAM_SUCCESS
.RS 4
Everything was successful\&.
.RE
.PP
PAM_SESSION_ERR
.RS 4
Timestamp file could not be created or updated\&.
.RE
.SH "NOTES"
.PP
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\&.
.SH "EXAMPLES"
.sp
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auth sufficient pam_timestamp\&.so verbose
auth required   pam_unix\&.so

session required pam_unix\&.so
session optional pam_timestamp\&.so
    
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.sp 1
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.fam
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.if n \{\
.RE
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.SH "FILES"
.PP
\FC/var/run/sudo/\&.\&.\&.\F[]
.RS 4
timestamp files and directories
.RE
.SH "SEE ALSO"
.PP

\fBpam_timestamp_check\fR(8),
\fBpam.conf\fR(5),
\fBpam.d\fR(5),
\fBpam\fR(8)
.SH "AUTHOR"
.PP
pam_tally was written by Nalin Dahyabhai\&.