Descriptionpam_systemd registers user
- sessions in the systemd login manager
+ sessions with the systemd login manager
systemd-logind.service8,
and hence the systemd control group hierarchy.
@@ -72,11 +72,11 @@
$XDG_SESSION_ID environment
variable is initialized. If auditing is
available and
- pam_loginuid.so run before
+ pam_loginuid.so was run before
this module (which is highly recommended), the
variable is initialized from the auditing
session id
- (/proc/self/sessionid). Otherwise
+ (/proc/self/sessionid). Otherwise,
an independent session counter is
used.
@@ -84,21 +84,23 @@
created for the session. If this is the first
concurrent session of the user, an implicit
slice below user.slice is
- automatically created and the scope placed in
- it. In instance of the system service
- user@.service which runs
- the systemd user manager
- instance.
+ automatically created and the scope placed into
+ it. An instance of the system service
+ user@.service, which runs
+ the systemd user manager instance, is started.
+
On logout, this module ensures the following:
- If this is enabled, all
+ If enabled in
+ logind.conf
+ 5, all
processes of the session are terminated. If
- the last concurrent session of a user ends, his
- user systemd instance will be terminated too,
- and so will the user's slice
+ 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.If the last concurrent session
@@ -127,14 +129,37 @@
Takes a string
argument which sets the session class.
The XDG_SESSION_CLASS environmental variable
- takes precedence.
+ takes precedence. One of
+ user,
+ greeter,
+ lock-screen or
+ background. See
+ sd_session_get_class3
+ for details about the session class.
-
+
- Takes a boolean
- argument. If yes, the module will log
+ Takes a string
+ argument which sets the session type.
+ The XDG_SESSION_TYPE environmental
+ variable takes precedence. One of
+ unspecified,
+ tty,
+ x11,
+ wayland or
+ mir. See
+ sd_session_get_type3
+ for details about the session type.
+
+
+
+
+
+ Takes an optional
+ boolean argument. If yes or without
+ the argument, the module will log
debugging information as it
operates.
@@ -177,9 +202,9 @@
to the user login time on the
machine. It is automatically created
the first time a user logs in and
- removed on his final logout. If a user
- logs in twice at the same time, both
- sessions will see the same
+ removed on the user's final logout. If
+ a user logs in twice at the same time,
+ both sessions will see the same
$XDG_RUNTIME_DIR
and the same contents. If a user logs
in once, then logs out again, and logs
@@ -188,18 +213,95 @@
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 $XDG_SESSION_ID
- in the filename. This directory shall
- be used for runtime file system
- objects such as AF_UNIX 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.
+ data in this directory, the user
+ should include the value of
+ $XDG_SESSION_ID in
+ the filename. This directory shall be
+ used for runtime file system objects
+ such as AF_UNIX
+ 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 XDG
+ Base Directory
+ Specification.
+
+
+
+ The following environment variables are read by
+ the module and may be used by the PAM service to pass
+ metadata to the module:
+
+
+
+ $XDG_SESSION_TYPE
+
+ The session type. This
+ may be used instead of
+ on the
+ module parameter line, and is usually
+ preferred.
+
+
+
+ $XDG_SESSION_CLASS
+
+ The session class. This
+ may be used instead of
+ on the
+ module parameter line, and is usually
+ preferred.
+
+
+
+ $XDG_SESSION_DESKTOP
+
+ 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:
+ GNOME, or
+ KDE. It is
+ recommended to use the same
+ identifiers and capitalization as for
+ $XDG_CURRENT_DESKTOP,
+ as defined by the Desktop
+ Entry Specification. (However,
+ note that
+ $XDG_SESSION_DESKTOP
+ only takes a single item, and not a
+ colon-separated list like
+ $XDG_CURRENT_DESKTOP.)
+ See
+ sd_session_get_desktop3
+ for more details.
+
+
+
+ $XDG_SEAT
+
+ The seat name the session
+ shall be registered for, if
+ any.
+
+
+
+ $XDG_VTNR
+
+ The VT number the
+ session shall be registered for, if
+ any. (Only applies to seats with a VT
+ available, such as
+ seat0)
+
+
@@ -223,10 +325,10 @@ session required pam_systemd.so
systemd-logind.service8,
logind.conf5,
loginctl1,
- pam.conf5,
- pam.d5,
- pam8,
- pam_loginuid8,
+ pam.conf5,
+ pam.d5,
+ pam8,
+ pam_loginuid8,
systemd.scope5,
systemd.slice5,
systemd.service5