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.\" ========================================================================
.\"
.IX Title "CGI::Session::Driver::file 3pm"
.TH CGI::Session::Driver::file 3pm "2016-01-15" "perl v5.22.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
CGI::Session::Driver::file \- Default CGI::Session driver
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 3
\&    $s = CGI::Session\->new();
\&    $s = CGI::Session\->new("driver:file", $sid);
\&    $s = CGI::Session\->new("driver:file", $sid, {Directory=>\*(Aq/tmp\*(Aq});
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
When CGI::Session object is created without explicitly setting \fIdriver\fR, \fIfile\fR will be assumed.
\&\fIfile\fR \- driver will store session data in plain files, where each session will be stored in a separate
file.
.PP
Naming conventions of session files are defined by \f(CW$CGI::Session::Driver::file::FileName\fR global variable. 
Default value of this variable is \fIcgisess_%s\fR, where \f(CW%s\fR will be replaced with respective session \s-1ID.\s0 Should
you wish to set your own FileName template, do so before requesting for session object:
.PP
.Vb 4
\&    use CGI::Session::Driver::file; # This line is mandatory.
\&    # Time passes...
\&    $CGI::Session::Driver::file::FileName = "%s.dat";
\&    $s = CGI::Session\->new();
.Ve
.PP
For backwards compatibility with 3.x, you can also use the variable name
\&\f(CW$CGI::Session::File::FileName\fR, which will override the one above.
.SS "\s-1DRIVER ARGUMENTS\s0"
.IX Subsection "DRIVER ARGUMENTS"
If you wish to specify a session directory, use the \fBDirectory\fR option, which denotes location of the directory 
where session ids are to be kept. If \fBDirectory\fR is not set, defaults to whatever File::Spec\->\fItmpdir()\fR returns. 
So all the three lines in the \s-1SYNOPSIS\s0 section of this manual produce the same result on a \s-1UNIX\s0 machine.
.PP
If specified \fBDirectory\fR does not exist, all necessary directory hierarchy will be created.
.PP
By default, sessions are created with a umask of 0660. If you wish to change the umask for a session, pass
a \fBUMask\fR option with an octal representation of the umask you would like for said session.
.SH "NOTES"
.IX Header "NOTES"
If your \s-1OS\s0 doesn't support flock, you should understand the risks of going without locking the session files. Since
sessions tend to be used in environments where race conditions may occur due to concurrent access of files by 
different processes, locking tends to be seen as a good and very necessary thing. If you still want to use this 
driver but don't want flock, set \f(CW$CGI::Session::Driver::file::NoFlock\fR to 1 or pass \f(CW\*(C`NoFlock => 1\*(C'\fR and this 
driver will operate without locks.
.SH "LICENSING"
.IX Header "LICENSING"
For support and licensing see CGI::Session