'\" te
.\" Copyright 2016 Toomas Soome <tsoome@me.com>
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.TH PAM_UNIX_SESSION 7 "August 19, 2023"
.SH NAME
pam_unix_session \- PAM session management module for UNIX
.SH SYNOPSIS
.nf
\fBpam_unix_session.so.1\fR
.fi

.SH DESCRIPTION
The \fBpam_unix_session\fR module implements \fBpam_sm_open_session\fR(3PAM)
and \fBpam_sm_close_session\fR(3PAM).
.sp
.LP
\fBpam_sm_open_session()\fR updates the \fB/var/adm/lastlog\fR file with the
information contained in the \fBPAM_USER\fR, \fBPAM_TTY\fR, and
\fBPAM_RHOSTS\fR items. \fBpam_unix_account\fR(7) uses this account to
determine the previous time the user logged in.
.sp
.LP
\fBpam_sm_close_session()\fR is a null function.
.sp
.LP
The following options can be passed to the module:
.sp
.ne 2
.na
\fBdebug\fR
.ad
.RS 9n
\fBsyslog\fR(3C) debugging information at the \fBLOG_DEBUG\fR level
.RE

.sp
.ne 2
.na
\fB\fBnowarn\fR\fR
.ad
.RS 9n
Turn off last login PAM_TEXT_INFO message.
.RE

.SH ERRORS
Upon successful completion, \fBPAM_SUCCESS\fR is returned. The following error
codes are returned upon error:
.sp
.ne 2
.na
\fB\fBPAM_SESSION_ERR\fR\fR
.ad
.RS 20n
Cannot make or remove the entry for the specified session (PAM_TTY is not
present).
.RE

.sp
.ne 2
.na
\fB\fBPAM_USER_UNKNOWN\fR\fR
.ad
.RS 20n
No account is present for \fIuser\fR.
.RE

.SH ATTRIBUTES
See \fBattributes\fR(7) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Evolving
_
MT Level	MT-Safe with exceptions
.TE

.SH SEE ALSO
.BR syslog (3C),
.BR libpam (3LIB),
.BR pam (3PAM),
.BR pam_sm_close_session (3PAM),
.BR pam_sm_open_session (3PAM),
.BR nsswitch.conf (5),
.BR pam.conf (5),
.BR attributes (7),
.BR pam_authtok_check (7),
.BR pam_authtok_get (7),
.BR pam_authtok_store (7),
.BR pam_dhkeys (7),
.BR pam_passwd_auth (7),
.BR pam_unix_account (7),
.BR pam_unix_auth (7)
.SH NOTES
The interfaces in \fBlibpam\fR(3LIB) are MT-Safe only if each thread within the
multi-threaded application uses its own PAM handle.
.sp
.LP
The \fBpam_unix\fR(7) module is no longer supported. Similar functionality is
provided by \fBpam_authtok_check\fR(7), \fBpam_authtok_get\fR(7),
\fBpam_authtok_store\fR(7), \fBpam_dhkeys\fR(7), \fBpam_passwd_auth\fR(7),
\fBpam_unix_account\fR(7), \fBpam_unix_auth\fR(7), and
\fBpam_unix_session\fR(7).