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Diffstat (limited to 'man/pam_systemd.xml')
| -rw-r--r-- | man/pam_systemd.xml | 568 |
1 files changed, 263 insertions, 305 deletions
diff --git a/man/pam_systemd.xml b/man/pam_systemd.xml index 3e106ea69b..b4a3f502b4 100644 --- a/man/pam_systemd.xml +++ b/man/pam_systemd.xml @@ -1,6 +1,6 @@ <?xml version='1.0'?> <!--*-nxml-*--> <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" - "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> + "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> <!-- This file is part of systemd. @@ -23,292 +23,250 @@ <refentry id="pam_systemd" conditional='HAVE_PAM'> - <refentryinfo> - <title>pam_systemd</title> - <productname>systemd</productname> - - <authorgroup> - <author> - <contrib>Developer</contrib> - <firstname>Lennart</firstname> - <surname>Poettering</surname> - <email>lennart@poettering.net</email> - </author> - </authorgroup> - </refentryinfo> - - <refmeta> - <refentrytitle>pam_systemd</refentrytitle> - <manvolnum>8</manvolnum> - </refmeta> - - <refnamediv> - <refname>pam_systemd</refname> - <refpurpose>Register user sessions in the systemd login manager</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <para><filename>pam_systemd.so</filename></para> - </refsynopsisdiv> - - <refsect1> - <title>Description</title> - - <para><command>pam_systemd</command> registers user - sessions with the systemd login manager - <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, - and hence the systemd control group hierarchy.</para> - - <para>On login, this module ensures the following:</para> - - <orderedlist> - <listitem><para>If it does not exist yet, the - user runtime directory - <filename>/run/user/$USER</filename> is - created and its ownership changed to the user - that is logging in.</para></listitem> - - <listitem><para>The - <varname>$XDG_SESSION_ID</varname> environment - variable is initialized. If auditing is - available and - <command>pam_loginuid.so</command> was run before - this module (which is highly recommended), the - variable is initialized from the auditing - session id - (<filename>/proc/self/sessionid</filename>). Otherwise, - an independent session counter is - used.</para></listitem> - - <listitem><para>A new systemd scope unit is - created for the session. If this is the first - concurrent session of the user, an implicit - slice below <filename>user.slice</filename> is - automatically created and the scope placed into - it. An instance of the system service - <filename>user@.service</filename>, which runs - the systemd user manager instance, is started. - </para></listitem> - </orderedlist> - - <para>On logout, this module ensures the following:</para> - - <orderedlist> - <listitem><para>If enabled in - <citerefentry><refentrytitle>logind.conf</refentrytitle> - <manvolnum>5</manvolnum></citerefentry>, all - processes of the session are terminated. If - the last concurrent session of a user ends, - the user's systemd instance will be - terminated too, and so will the user's slice - unit.</para></listitem> - - <listitem><para>If the last concurrent session - of a user ends, the - <varname>$XDG_RUNTIME_DIR</varname> directory - and all its contents are removed, - too.</para></listitem> - </orderedlist> - - <para>If the system was not booted up with systemd as - init system, this module does nothing and immediately - returns PAM_SUCCESS.</para> - - </refsect1> - - <refsect1> - <title>Options</title> - - <para>The following options are understood:</para> - - <variablelist class='pam-directives'> - - <varlistentry> - <term><option>class=</option></term> - - <listitem><para>Takes a string - argument which sets the session class. - The XDG_SESSION_CLASS environmental variable - takes precedence. One of - <literal>user</literal>, - <literal>greeter</literal>, - <literal>lock-screen</literal> or - <literal>background</literal>. See - <citerefentry><refentrytitle>sd_session_get_class</refentrytitle><manvolnum>3</manvolnum></citerefentry> - for details about the session class.</para></listitem> - </varlistentry> - - <varlistentry> - <term><option>type=</option></term> - - <listitem><para>Takes a string - argument which sets the session type. - The XDG_SESSION_TYPE environmental - variable takes precedence. One of - <literal>unspecified</literal>, - <literal>tty</literal>, - <literal>x11</literal>, - <literal>wayland</literal> or - <literal>mir</literal>. See - <citerefentry><refentrytitle>sd_session_get_type</refentrytitle><manvolnum>3</manvolnum></citerefentry> - for details about the session type.</para></listitem> - </varlistentry> - - <varlistentry> - <term><option>debug<optional>=</optional></option></term> - - <listitem><para>Takes an optional - boolean argument. If yes or without - the argument, the module will log - debugging information as it - operates.</para></listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Module Types Provided</title> - - <para>Only <option>session</option> is provided.</para> - </refsect1> - - <refsect1> - <title>Environment</title> - - <para>The following environment variables are set for the processes of the user's session:</para> - - <variablelist class='environment-variables'> - <varlistentry> - <term><varname>$XDG_SESSION_ID</varname></term> - - <listitem><para>A session identifier, - suitable to be used in filenames. The - string itself should be considered - opaque, although often it is just the - audit session ID as reported by - <filename>/proc/self/sessionid</filename>. Each - ID will be assigned only once during - machine uptime. It may hence be used - to uniquely label files or other - resources of this - session.</para></listitem> - </varlistentry> - - <varlistentry> - <term><varname>$XDG_RUNTIME_DIR</varname></term> - - <listitem><para>Path to a user-private - user-writable directory that is bound - to the user login time on the - machine. It is automatically created - the first time a user logs in and - removed on the user's final logout. If - a user logs in twice at the same time, - both sessions will see the same - <varname>$XDG_RUNTIME_DIR</varname> - and the same contents. If a user logs - in once, then logs out again, and logs - in again, the directory contents will - have been lost in between, but - applications should not rely on this - behavior and must be able to deal with - stale files. To store session-private - data in this directory, the user - should include the value of - <varname>$XDG_SESSION_ID</varname> in - the filename. This directory shall be - used for runtime file system objects - such as <constant>AF_UNIX</constant> - sockets, FIFOs, PID files and - similar. It is guaranteed that this - directory is local and offers the - greatest possible file system feature - set the operating system provides. For - further details see the <ulink - url="http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html">XDG - Base Directory - Specification</ulink>.</para></listitem> - </varlistentry> - - </variablelist> - - <para>The following environment variables are read by - the module and may be used by the PAM service to pass - metadata to the module:</para> - - <variablelist class='environment-variables'> - <varlistentry> - <term><varname>$XDG_SESSION_TYPE</varname></term> - - <listitem><para>The session type. This - may be used instead of - <option>session=</option> on the - module parameter line, and is usually - preferred.</para></listitem> - </varlistentry> - - <varlistentry> - <term><varname>$XDG_SESSION_CLASS</varname></term> - - <listitem><para>The session class. This - may be used instead of - <option>class=</option> on the - module parameter line, and is usually - preferred.</para></listitem> - </varlistentry> - - <varlistentry> - <term><varname>$XDG_SESSION_DESKTOP</varname></term> - - <listitem><para>A single, short - identifier string for the desktop - environment. This may be used to - indicate the session desktop used, - where this applies and if this - information is available. For example: - <literal>GNOME</literal>, or - <literal>KDE</literal>. It is - recommended to use the same - identifiers and capitalization as for - <varname>$XDG_CURRENT_DESKTOP</varname>, - as defined by the <ulink - url="http://standards.freedesktop.org/desktop-entry-spec/latest/">Desktop - Entry Specification</ulink>. (However, - note that - <varname>$XDG_SESSION_DESKTOP</varname> - only takes a single item, and not a - colon-separated list like - <varname>$XDG_CURRENT_DESKTOP</varname>.) - See - <citerefentry><refentrytitle>sd_session_get_desktop</refentrytitle><manvolnum>3</manvolnum></citerefentry> - for more details.</para></listitem> - </varlistentry> - - <varlistentry> - <term><varname>$XDG_SEAT</varname></term> - - <listitem><para>The seat name the session - shall be registered for, if - any.</para></listitem> - </varlistentry> - - <varlistentry> - <term><varname>$XDG_VTNR</varname></term> - - <listitem><para>The VT number the - session shall be registered for, if - any. (Only applies to seats with a VT - available, such as - <literal>seat0</literal>)</para></listitem> - </varlistentry> - - </variablelist> - </refsect1> - - <refsect1> - <title>Example</title> - - <programlisting>#%PAM-1.0 + <refentryinfo> + <title>pam_systemd</title> + <productname>systemd</productname> + + <authorgroup> + <author> + <contrib>Developer</contrib> + <firstname>Lennart</firstname> + <surname>Poettering</surname> + <email>lennart@poettering.net</email> + </author> + </authorgroup> + </refentryinfo> + + <refmeta> + <refentrytitle>pam_systemd</refentrytitle> + <manvolnum>8</manvolnum> + </refmeta> + + <refnamediv> + <refname>pam_systemd</refname> + <refpurpose>Register user sessions in the systemd login manager</refpurpose> + </refnamediv> + + <refsynopsisdiv> + <para><filename>pam_systemd.so</filename></para> + </refsynopsisdiv> + + <refsect1> + <title>Description</title> + + <para><command>pam_systemd</command> registers user sessions with + the systemd login manager + <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + and hence the systemd control group hierarchy.</para> + + <para>On login, this module ensures the following:</para> + + <orderedlist> + <listitem><para>If it does not exist yet, the user runtime + directory <filename>/run/user/$USER</filename> is created and + its ownership changed to the user that is logging + in.</para></listitem> + + <listitem><para>The <varname>$XDG_SESSION_ID</varname> + environment variable is initialized. If auditing is available + and <command>pam_loginuid.so</command> was run before this + module (which is highly recommended), the variable is + initialized from the auditing session id + (<filename>/proc/self/sessionid</filename>). Otherwise, an + independent session counter is used.</para></listitem> + + <listitem><para>A new systemd scope unit is created for the + session. If this is the first concurrent session of the user, an + implicit slice below <filename>user.slice</filename> is + automatically created and the scope placed into it. An instance + of the system service <filename>user@.service</filename>, which + runs the systemd user manager instance, is started. + </para></listitem> + </orderedlist> + + <para>On logout, this module ensures the following:</para> + + <orderedlist> + <listitem><para>If enabled in + <citerefentry><refentrytitle>logind.conf</refentrytitle> + <manvolnum>5</manvolnum></citerefentry>, all processes of the + session are terminated. If the last concurrent session of a user + ends, the user's systemd instance will be terminated too, and so + will the user's slice unit.</para></listitem> + + <listitem><para>If the last concurrent session of a user ends, + the <varname>$XDG_RUNTIME_DIR</varname> directory and all its + contents are removed, too.</para></listitem> + </orderedlist> + + <para>If the system was not booted up with systemd as init system, + this module does nothing and immediately returns + <constant>PAM_SUCCESS</constant>.</para> + + </refsect1> + + <refsect1> + <title>Options</title> + + <para>The following options are understood:</para> + + <variablelist class='pam-directives'> + + <varlistentry> + <term><option>class=</option></term> + + <listitem><para>Takes a string argument which sets the session + class. The XDG_SESSION_CLASS environmental variable takes + precedence. One of + <literal>user</literal>, + <literal>greeter</literal>, + <literal>lock-screen</literal> or + <literal>background</literal>. See + <citerefentry><refentrytitle>sd_session_get_class</refentrytitle><manvolnum>3</manvolnum></citerefentry> + for details about the session class.</para></listitem> + </varlistentry> + + <varlistentry> + <term><option>type=</option></term> + + <listitem><para>Takes a string argument which sets the session + type. The XDG_SESSION_TYPE environmental variable takes + precedence. One of + <literal>unspecified</literal>, + <literal>tty</literal>, + <literal>x11</literal>, + <literal>wayland</literal> or + <literal>mir</literal>. See + <citerefentry><refentrytitle>sd_session_get_type</refentrytitle><manvolnum>3</manvolnum></citerefentry> + for details about the session type.</para></listitem> + </varlistentry> + + <varlistentry> + <term><option>debug<optional>=</optional></option></term> + + <listitem><para>Takes an optional + boolean argument. If yes or without + the argument, the module will log + debugging information as it + operates.</para></listitem> + </varlistentry> + </variablelist> + </refsect1> + + <refsect1> + <title>Module Types Provided</title> + + <para>Only <option>session</option> is provided.</para> + </refsect1> + + <refsect1> + <title>Environment</title> + + <para>The following environment variables are set for the + processes of the user's session:</para> + + <variablelist class='environment-variables'> + <varlistentry> + <term><varname>$XDG_SESSION_ID</varname></term> + + <listitem><para>A session identifier, suitable to be used in + filenames. The string itself should be considered opaque, + although often it is just the audit session ID as reported by + <filename>/proc/self/sessionid</filename>. Each ID will be + assigned only once during machine uptime. It may hence be used + to uniquely label files or other resources of this + session.</para></listitem> + </varlistentry> + + <varlistentry> + <term><varname>$XDG_RUNTIME_DIR</varname></term> + + <listitem><para>Path to a user-private user-writable directory + that is bound to the user login time on the machine. It is + automatically created the first time a user logs in and + removed on the user's final logout. If a user logs in twice at + the same time, both sessions will see the same + <varname>$XDG_RUNTIME_DIR</varname> and the same contents. If + a user logs in once, then logs out again, and logs in again, + the directory contents will have been lost in between, but + applications should not rely on this behavior and must be able + to deal with stale files. To store session-private data in + this directory, the user should include the value of + <varname>$XDG_SESSION_ID</varname> in the filename. This + directory shall be used for runtime file system objects such + as <constant>AF_UNIX</constant> sockets, FIFOs, PID files and + similar. It is guaranteed that this directory is local and + offers the greatest possible file system feature set the + operating system provides. For further details see the <ulink + url="http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html">XDG + Base Directory Specification</ulink>.</para></listitem> + </varlistentry> + + </variablelist> + + <para>The following environment variables are read by the module + and may be used by the PAM service to pass metadata to the + module:</para> + + <variablelist class='environment-variables'> + <varlistentry> + <term><varname>$XDG_SESSION_TYPE</varname></term> + + <listitem><para>The session type. This may be used instead of + <option>session=</option> on the module parameter line, and is + usually preferred.</para></listitem> + </varlistentry> + + <varlistentry> + <term><varname>$XDG_SESSION_CLASS</varname></term> + + <listitem><para>The session class. This may be used instead of + <option>class=</option> on the module parameter line, and is + usually preferred.</para></listitem> + </varlistentry> + + <varlistentry> + <term><varname>$XDG_SESSION_DESKTOP</varname></term> + + <listitem><para>A single, short identifier string for the + desktop environment. This may be used to indicate the session + desktop used, where this applies and if this information is + available. For example: <literal>GNOME</literal>, or + <literal>KDE</literal>. It is recommended to use the same + identifiers and capitalization as for + <varname>$XDG_CURRENT_DESKTOP</varname>, as defined by the + <ulink + url="http://standards.freedesktop.org/desktop-entry-spec/latest/">Desktop + Entry Specification</ulink>. (However, note that + <varname>$XDG_SESSION_DESKTOP</varname> only takes a single + item, and not a colon-separated list like + <varname>$XDG_CURRENT_DESKTOP</varname>.) See + <citerefentry><refentrytitle>sd_session_get_desktop</refentrytitle><manvolnum>3</manvolnum></citerefentry> + for more details.</para></listitem> + </varlistentry> + + <varlistentry> + <term><varname>$XDG_SEAT</varname></term> + + <listitem><para>The seat name the session shall be registered + for, if any.</para></listitem> + </varlistentry> + + <varlistentry> + <term><varname>$XDG_VTNR</varname></term> + + <listitem><para>The VT number the session shall be registered + for, if any. (Only applies to seats with a VT available, such + as <literal>seat0</literal>)</para></listitem> + </varlistentry> + + </variablelist> + </refsect1> + + <refsect1> + <title>Example</title> + + <programlisting>#%PAM-1.0 auth required pam_unix.so auth required pam_nologin.so account required pam_unix.so @@ -316,23 +274,23 @@ password required pam_unix.so session required pam_unix.so session required pam_loginuid.so session required pam_systemd.so</programlisting> - </refsect1> - - <refsect1> - <title>See Also</title> - <para> - <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, - <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry project='man-pages'><refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry project='man-pages'><refentrytitle>pam.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry project='man-pages'><refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum></citerefentry>, - <citerefentry project='man-pages'><refentrytitle>pam_loginuid</refentrytitle><manvolnum>8</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry> - </para> - </refsect1> + </refsect1> + + <refsect1> + <title>See Also</title> + <para> + <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd-logind.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>logind.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>loginctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, + <citerefentry project='man-pages'><refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry project='man-pages'><refentrytitle>pam.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry project='man-pages'><refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry project='man-pages'><refentrytitle>pam_loginuid</refentrytitle><manvolnum>8</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.scope</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.slice</refentrytitle><manvolnum>5</manvolnum></citerefentry>, + <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry> + </para> + </refsect1> </refentry> |