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Diffstat (limited to 'modules/pam_wheel/pam_wheel.8.xml')
| -rw-r--r-- | modules/pam_wheel/pam_wheel.8.xml | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/modules/pam_wheel/pam_wheel.8.xml b/modules/pam_wheel/pam_wheel.8.xml new file mode 100644 index 0000000..c8d9377 --- /dev/null +++ b/modules/pam_wheel/pam_wheel.8.xml @@ -0,0 +1,243 @@ +<?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_wheel"> + + <refmeta> + <refentrytitle>pam_wheel</refentrytitle> + <manvolnum>8</manvolnum> + <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo> + </refmeta> + + <refnamediv id="pam_wheel-name"> + <refname>pam_wheel</refname> + <refpurpose>Only permit root access to members of group wheel</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <cmdsynopsis id="pam_wheel-cmdsynopsis"> + <command>pam_wheel.so</command> + <arg choice="opt"> + debug + </arg> + <arg choice="opt"> + deny + </arg> + <arg choice="opt"> + group=<replaceable>name</replaceable> + </arg> + <arg choice="opt"> + root_only + </arg> + <arg choice="opt"> + trust + </arg> + <arg choice="opt"> + use_uid + </arg> + </cmdsynopsis> + </refsynopsisdiv> + + <refsect1 id="pam_wheel-description"> + <title>DESCRIPTION</title> + <para> + The pam_wheel PAM module is used to enforce the so-called + <emphasis>wheel</emphasis> group. By default it permits root + access to the system if the applicant user is a member of the + <emphasis>wheel</emphasis> group. If no group with this name exist, + the module is using the group with the group-ID + <emphasis remap='B'>0</emphasis>. + </para> + </refsect1> + + <refsect1 id="pam_wheel-options"> + <title>OPTIONS</title> + <variablelist> + <varlistentry> + <term> + <option>debug</option> + </term> + <listitem> + <para> + Print debug information. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + <option>deny</option> + </term> + <listitem> + <para> + Reverse the sense of the auth operation: if the user + is trying to get UID 0 access and is a member of the + wheel group (or the group of the <option>group</option> option), + deny access. Conversely, if the user is not in the group, return + PAM_IGNORE (unless <option>trust</option> was also specified, + in which case we return PAM_SUCCESS). + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + <option>group=<replaceable>name</replaceable></option> + </term> + <listitem> + <para> + Instead of checking the wheel or GID 0 groups, use + the <option><replaceable>name</replaceable></option> group + to perform the authentication. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + <option>root_only</option> + </term> + <listitem> + <para> + The check for wheel membership is done only when the target user + UID is 0. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + <option>trust</option> + </term> + <listitem> + <para> + The pam_wheel module will return PAM_SUCCESS instead + of PAM_IGNORE if the user is a member of the wheel group + (thus with a little play stacking the modules the wheel + members may be able to su to root without being prompted + for a passwd). + </para> + </listitem> + </varlistentry> + <varlistentry> + <term> + <option>use_uid</option> + </term> + <listitem> + <para> + The check for wheel membership will be done against + the current uid instead of the original one (useful when + jumping with su from one account to another for example). + </para> + </listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1 id="pam_wheel-types"> + <title>MODULE TYPES PROVIDED</title> + <para> + The <emphasis remap='B'>auth</emphasis> and + <emphasis remap='B'>account</emphasis> module types are provided. + </para> + </refsect1> + + <refsect1 id='pam_wheel-return_values'> + <title>RETURN VALUES</title> + <variablelist> + <varlistentry> + <term>PAM_AUTH_ERR</term> + <listitem> + <para> + Authentication failure. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_BUF_ERR</term> + <listitem> + <para> + Memory buffer error. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_IGNORE</term> + <listitem> + <para> + The return value should be ignored by PAM dispatch. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_PERM_DENY</term> + <listitem> + <para> + Permission denied. + </para> + </listitem> + </varlistentry> + <varlistentry> + <term>PAM_SERVICE_ERR</term> + <listitem> + <para> + Cannot determine the user name. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_SUCCESS</term> + <listitem> + <para> + Success. + </para> + </listitem> + </varlistentry> + + <varlistentry> + <term>PAM_USER_UNKNOWN</term> + <listitem> + <para> + User not known. + </para> + </listitem> + </varlistentry> + + </variablelist> + </refsect1> + + <refsect1 id='pam_wheel-examples'> + <title>EXAMPLES</title> + <para> + The root account gains access by default (rootok), only wheel + members can become root (wheel) but Unix authenticate non-root + applicants. + <programlisting> +su auth sufficient pam_rootok.so +su auth required pam_wheel.so +su auth required pam_unix.so + </programlisting> + </para> + </refsect1> + + <refsect1 id='pam_wheel-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_wheel-author'> + <title>AUTHOR</title> + <para> + pam_wheel was written by Cristian Gafton <gafton@redhat.com>. + </para> + </refsect1> + +</refentry> |