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<?xml version="1.0" encoding='UTF-8'?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
<refentry id="pam_umask">
<refmeta>
<refentrytitle>pam_umask</refentrytitle>
<manvolnum>8</manvolnum>
<refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
</refmeta>
<refnamediv id="pam_umask-name">
<refname>pam_umask</refname>
<refpurpose>PAM module to set the file mode creation mask</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis id="pam_umask-cmdsynopsis">
<command>pam_umask.so</command>
<arg choice="opt">
debug
</arg>
<arg choice="opt">
silent
</arg>
<arg choice="opt">
usergroups
</arg>
<arg choice="opt">
umask=<replaceable>mask</replaceable>
</arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1 id="pam_umask-description">
<title>DESCRIPTION</title>
<para>
pam_umask is a PAM module to set the file mode creation mask
of the current environment. The umask affects the default
permissions assigned to newly created files.
</para>
<para>
The PAM module tries to get the umask value from the
following places in the following order:
<itemizedlist>
<listitem>
<para>
umask= argument
</para>
</listitem>
<listitem>
<para>
umask= entry of the users GECOS field
</para>
</listitem>
<listitem>
<para>
pri= entry of the users GECOS field
</para>
</listitem>
<listitem>
<para>
ulimit= entry of the users GECOS field
</para>
</listitem>
<listitem>
<para>
UMASK= entry from /etc/default/login
</para>
</listitem>
<listitem>
<para>
UMASK entry from /etc/login.defs
</para>
</listitem>
</itemizedlist>
</para>
</refsect1>
<refsect1 id="pam_umask-options">
<title>OPTIONS</title>
<para>
<variablelist>
<varlistentry>
<term>
<option>debug</option>
</term>
<listitem>
<para>
Print debug information.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<option>silent</option>
</term>
<listitem>
<para>
Don't print informative messages.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<option>usergroups</option>
</term>
<listitem>
<para>
If the user is not root, and the user ID is equal to the
group ID, and the username is the same as primary group name,
the umask group bits are set to be the same as
owner bits (examples: 022 -> 002, 077 -> 007).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>
<option>umask=<replaceable>mask</replaceable></option>
</term>
<listitem>
<para>
Sets the calling process's file mode creation mask (umask)
to <option>mask</option> & 0777. The value is interpreted
as Octal.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 id="pam_umask-types">
<title>MODULE TYPES PROVIDED</title>
<para>
Only the <option>session</option> type is provided.
</para>
</refsect1>
<refsect1 id='pam_umask-return_values'>
<title>RETURN VALUES</title>
<para>
<variablelist>
<varlistentry>
<term>PAM_SUCCESS</term>
<listitem>
<para>
The new umask was set successfully.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>PAM_SERVICE_ERR</term>
<listitem>
<para>
No username was given.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term>PAM_USER_UNKNOWN</term>
<listitem>
<para>
User not known.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 id='pam_umask-examples'>
<title>EXAMPLES</title>
<para>
Add the following line to <filename>/etc/pam.d/login</filename> to
set the user specific umask at login:
<programlisting>
session optional pam_umask.so umask=0022
</programlisting>
</para>
</refsect1>
<refsect1 id='pam_umask-see_also'>
<title>SEE ALSO</title>
<para>
<citerefentry>
<refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>pam.d</refentrytitle><manvolnum>5</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum>
</citerefentry>
</para>
</refsect1>
<refsect1 id='pam_umask-author'>
<title>AUTHOR</title>
<para>
pam_umask was written by Thorsten Kukuk <kukuk@thkukuk.de>.
</para>
</refsect1>
</refentry>
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