add a new tool for creating transient mount and automount units

This adds "systemd-mount" which is for transient mount and automount units what
"systemd-run" is for transient service, scope and timer units.

The tool allows establishing mounts and automounts during runtime. It is very
similar to the usual /bin/mount commands, but can pull in additional
dependenices on access (for example, it pulls in fsck automatically), an take
benefit of the automount logic.

This tool is particularly useful for mount removable file systems (such as USB
sticks), as the automount logic (together with automatic unmount-on-idle), as
well as automatic fsck on first access ensure that the removable file system
has a high chance to remain in a fully clean state even when it is unplugged
abruptly, and returns to a clean state on the next re-plug.

This is a follow-up for #2471, as it adds a simple client-side for the
transient automount logic added in that PR.

In later work it might make sense to invoke this tool automatically from udev
rules in order to implement a simpler and safer version of removable media
management á la udisks.

9 files changed, 1426 insertions, 1 deletions

diff --git a/.gitignore b/.gitignore
index f7db68b4a6..6caa8218bd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -89,6 +89,7 @@
 /systemd-machine-id-setup
 /systemd-machined
 /systemd-modules-load
+/systemd-mount
 /systemd-networkd
 /systemd-networkd-wait-online
 /systemd-notify
diff --git a/Makefile-man.am b/Makefile-man.am
index 3ac1906a4a..bf8de1e58f 100644
--- a/Makefile-man.am
+++ b/Makefile-man.am
@@ -121,6 +121,7 @@ MANPAGES += \
 	man/systemd-journald.service.8 \
 	man/systemd-machine-id-commit.service.8 \
 	man/systemd-machine-id-setup.1 \
+	man/systemd-mount.1 \
 	man/systemd-notify.1 \
 	man/systemd-nspawn.1 \
 	man/systemd-path.1 \
@@ -2651,6 +2652,7 @@ EXTRA_DIST += \
 	man/systemd-machine-id-setup.xml \
 	man/systemd-machined.service.xml \
 	man/systemd-modules-load.service.xml \
+	man/systemd-mount.xml \
 	man/systemd-networkd-wait-online.service.xml \
 	man/systemd-networkd.service.xml \
 	man/systemd-notify.xml \
diff --git a/Makefile.am b/Makefile.am
index d4e3e9a013..336f12880c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -384,6 +384,7 @@ bin_PROGRAMS = \
 	systemd-delta \
 	systemd-analyze \
 	systemd-run \
+	systemd-mount \
 	systemd-stdio-bridge \
 	systemd-path
 
@@ -3133,6 +3134,13 @@ systemd_run_LDADD = \
 	libsystemd-shared.la
 
 # ------------------------------------------------------------------------------
+systemd_mount_SOURCES = \
+	src/mount/mount-tool.c
+
+systemd_mount_LDADD = \
+	libsystemd-shared.la
+
+# ------------------------------------------------------------------------------
 systemd_stdio_bridge_SOURCES = \
 	src/stdio-bridge/stdio-bridge.c
 
diff --git a/man/standard-options.xml b/man/standard-options.xml
index f214463392..f718451a1b 100644
--- a/man/standard-options.xml
+++ b/man/standard-options.xml
@@ -28,6 +28,12 @@
     </listitem>
   </varlistentry>
 
+  <varlistentry id='no-ask-password'>
+    <term><option>--no-ask-password</option></term>
+
+    <listitem><para>Do not query the user for authentication for privileged operations.</para></listitem>
+  </varlistentry>
+
   <varlistentry id='no-legend'>
     <term><option>--no-legend</option></term>
 
diff --git a/man/systemd-mount.xml b/man/systemd-mount.xml
new file mode 100644
index 0000000000..e6c07863c0
--- /dev/null
+++ b/man/systemd-mount.xml
@@ -0,0 +1,295 @@
+<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+
+<!--
+  This file is part of systemd.
+
+  Copyright 2016 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+-->
+
+<refentry id="systemd-mount"
+          xmlns:xi="http://www.w3.org/2001/XInclude">
+
+  <refentryinfo>
+    <title>systemd-mount</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>systemd-mount</refentrytitle>
+    <manvolnum>1</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>systemd-mount</refname>
+    <refpurpose>Establish a mount or auto-mount point transiently</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <cmdsynopsis>
+      <command>systemd-mount</command>
+      <arg choice="opt" rep="repeat"><replaceable>OPTIONS</replaceable></arg>
+      <arg choice="plain"><replaceable>WHAT</replaceable></arg>
+      <arg choice="opt"><replaceable>WHERE</replaceable></arg>
+    </cmdsynopsis>
+    <cmdsynopsis>
+      <command>systemd-mount</command>
+      <arg choice="opt" rep="repeat"><replaceable>OPTIONS</replaceable></arg>
+      <arg choice="plain"><option>--list</option></arg>
+    </cmdsynopsis>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para><command>systemd-mount</command> may be used to create and start a transient <filename>.mount</filename> or
+    <filename>.automount</filename> unit of the file system <replaceable>WHAT</replaceable> on the mount point
+    <replaceable>WHERE</replaceable>.</para>
+
+    <para>In many ways, <command>systemd-mount</command> is similar to the lower-level
+    <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry> command, however instead
+    of executing the mount operation directly and immediately, <command>systemd-mount</command> schedules it through
+    the service manager job queue, so that it may pull in further dependencies (such as parent mounts, or a file system
+    checker to execute a priori), and may make use of the auto-mounting logic.</para>
+
+    <para>The command takes either one or two arguments. If only one argument is specified it should refer to a block
+    device containing a file system (e.g. <literal>/dev/sdb1</literal>), which is then probed for a label and other
+    metadata, and is mounted to a directory whose name is generated from the label. In this mode the block device must
+    exist at the time of invocation of the command, so that it may be probed. If the device is found to be a removable
+    block device (e.g. a USB stick) an automount point instead of a regular mount point is created (i.e. the
+    <option>--automount=</option> option is implied, see below).</para>
+
+    <para>If two arguments are specified the first indicates the mount source (the <replaceable>WHAT</replaceable>) and
+    the second indicates the path to mount it on (the <replaceable>WHERE</replaceable>). In this mode no probing of the
+    source is attempted, and a backing device node doesn't have to exist yet. However, if this mode is combined with
+    <option>--discover</option>, device node probing for additional metadata is enabled, and – much like in the
+    single-argument case discussed above – the specified device has to exist at the time of invocation of the
+    command.</para>
+
+    <para>Use the <option>--list</option> command to show a terse table of all local, known block devices with file
+    systems that may be mounted with this command.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>Options</title>
+
+    <para>The following options are understood:</para>
+
+    <variablelist>
+
+      <varlistentry>
+        <term><option>--no-block</option></term>
+
+        <listitem>
+          <para>Do not synchronously wait for the requested operation to finish. If this is not specified, the job will
+          be verified, enqueued and <command>systemd-mount</command> will wait until the mount or automount unit's
+          start-up is completed. By passing this argument, it is only verified and enqueued.</para>
+        </listitem>
+      </varlistentry>
+
+      <xi:include href="standard-options.xml" xpointer="no-pager"/>
+      <xi:include href="standard-options.xml" xpointer="no-ask-password"/>
+
+      <varlistentry>
+        <term><option>--quiet</option></term>
+        <term><option>-q</option></term>
+
+        <listitem><para>Suppresses additional informational output while running.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--discover</option></term>
+
+        <listitem><para>Enable probing of the mount source. This switch is implied if a single argument is specified on
+        the command line. If passed, additional metadata is read from the device to enhance the unit to create. For
+        example, a descriptive string for the transient units is generated from the file system label and device
+        model. Moreover if a removable block device (e.g. USB stick) is detected an automount unit instead of a regular
+        mount unit is created, with a short idle time-out, in order to ensure the file-system is placed in a clean
+        state quickly after each access.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--type=</option></term>
+        <term><option>-t</option></term>
+
+        <listitem><para>Specifies the file system type to mount (e.g. <literal>vfat</literal>, <literal>ext4</literal>,
+        …). If omitted (or set to <literal>auto</literal>) the file system is determined automatically.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--options=</option></term>
+        <term><option>-o</option></term>
+
+        <listitem><para>Additional mount options for the mount point.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--fsck=</option></term>
+
+        <listitem><para>Takes a boolean argument, defaults to on. Controls whether to run a file system check
+        immediately before the mount operation. In the automount case (see <option>--automount=</option> below) the
+        check will be run the moment the first access to the device is made, which might slightly delay the
+        access.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--description=</option></term>
+
+        <listitem><para>Provide a description for the mount or automount unit. See <varname>Description=</varname> in
+        <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+        </para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--property=</option></term>
+        <term><option>-p</option></term>
+
+        <listitem><para>Sets a unit property for the mount unit that is created. This takes an assignment in the same
+        format as <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
+        <command>set-property</command> command.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--automount=</option></term>
+
+        <listitem><para>Takes a boolean argument. Controls whether to create an automount point or a regular mount
+        point. If true an automount point is created that is backed by the actual file system at the time of first
+        access. If false a plain mount point is created that is backed by the actual file system immediately. Automount
+        points have the benefit that the file system stays unmounted and hence in clean state until it is first
+        accessed. In automount mode the <option>--timeout-idle-sec=</option> switch (see below) may be used to ensure
+        the mount point is unmounted automatically after the last access and an idle period passed.</para>
+
+        <para>If this switch is not specified it defaults to false. If not specified and <option>--discover</option> is
+        used (or only a single argument passed, which implies <option>--discover</option>, see above), and the file
+        system block device is detected to be removable, it is set to true, in order to increase the chance that the
+        file system is in a fully clean state if the device is unplugged abruptly.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>-A</option></term>
+
+        <listitem><para>Equivalent to <option>--automount=yes</option>.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--timeout-idle-sec=</option></term>
+
+        <listitem><para>Takes a time value that controls the idle timeout in automount mode. If set to
+        <literal>infinity</literal> (the default) no automatic unmounts are done. Otherwise the file system backing the
+        automount point is detached after the last access and the idle timeout passed. See
+        <citerefentry><refentrytitle>systemd.time</refentrytitle><manvolnum>7</manvolnum></citerefentry> for details on
+        the time syntax supported. This option has no effect if only a regular mount is established, and automounting
+        is not used.</para>
+
+        <para>Note that if <option>--discover</option> is used (or only a single argument passed, which implies
+        <option>--discover</option>, see above), and the file system block device is detected to be removable,
+        <option>--timeout-idle-sec=1s</option> is implied.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--automount-property=</option></term>
+
+        <listitem><para>Similar to <option>--property=</option>, but applies additional properties to the automount
+        unit created, instead of the mount unit.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--bind-device=</option></term>
+
+        <listitem><para>Takes a boolean argument, defaults to off. This option only has an effect in automount mode,
+        and controls whether the automount unit shall be bound to the backing device's lifetime. If enabled, the
+        automount point will be removed automatically when the backing device vanishes. If disabled the automount point
+        stays around, and subsequent accesses will block until backing device is replugged. This option has no effect
+        in case of non-device mounts, such as network or virtual file system mounts.</para>
+
+        <para>Note that if <option>--discover</option> is used (or only a single argument passed, which implies
+        <option>--discover</option>, see above), and the file system block device is detected to be removable, this
+        option is implied.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--list</option></term>
+
+        <listitem><para>Instead of establishing a mount or automount point, print a terse list of block devices
+        containing file systems that may be mounted with <literal>systemd-mount</literal>, along with useful metadata
+        such as labels, etc.</para></listitem>
+      </varlistentry>
+
+      <xi:include href="user-system-options.xml" xpointer="user" />
+      <xi:include href="user-system-options.xml" xpointer="system" />
+      <xi:include href="user-system-options.xml" xpointer="host" />
+      <xi:include href="user-system-options.xml" xpointer="machine" />
+
+      <xi:include href="standard-options.xml" xpointer="help" />
+      <xi:include href="standard-options.xml" xpointer="version" />
+    </variablelist>
+
+  </refsect1>
+
+  <refsect1>
+    <title>Exit status</title>
+
+    <para>On success, 0 is returned, a non-zero failure
+    code otherwise.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>The udev Database</title>
+
+    <para>If <option>--discover</option> is used, <command>systemd-mount</command> honours a couple of additional udev
+    properties of block devices:</para>
+
+    <variablelist class='udev-directives'>
+      <varlistentry>
+        <term><varname>SYSTEMD_MOUNT_OPTIONS=</varname></term>
+
+        <listitem><para>The mount options to use, if <option>--options=</option> is not used.</para></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><varname>SYSTEMD_MOUNT_WHERE=</varname></term>
+
+        <listitem><para>The file system path to place the mount point at, instead of the automatically generated
+        one.</para></listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para>
+      <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd.automount</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+    </para>
+  </refsect1>
+
+</refentry>
diff --git a/man/systemd-run.xml b/man/systemd-run.xml
index 1a30c0706b..56d585cdf9 100644
--- a/man/systemd-run.xml
+++ b/man/systemd-run.xml
@@ -452,6 +452,7 @@ There is a screen on:
       <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
       <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
       <citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+      <citerefentry><refentrytitle>systemd-mount</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
       <citerefentry><refentrytitle>machinectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
     </para>
   </refsect1>
diff --git a/src/basic/mount-util.c b/src/basic/mount-util.c
index 28dc778969..bfa04394fe 100644
--- a/src/basic/mount-util.c
+++ b/src/basic/mount-util.c
@@ -75,7 +75,6 @@ static int fd_fdinfo_mnt_id(int fd, const char *filename, int flags, int *mnt_id
         return safe_atoi(p, mnt_id);
 }
 
-
 int fd_is_mount_point(int fd, const char *filename, int flags) {
         union file_handle_union h = FILE_HANDLE_INIT, h_parent = FILE_HANDLE_INIT;
         int mount_id = -1, mount_id_parent = -1;
diff --git a/src/mount/Makefile b/src/mount/Makefile
new file mode 120000
index 0000000000..d0b0e8e008
--- /dev/null
+++ b/src/mount/Makefile
@@ -0,0 +1 @@
+../Makefile
\ No newline at end of file
diff --git a/src/mount/mount-tool.c b/src/mount/mount-tool.c
new file mode 100644
index 0000000000..9076ba3b0b
--- /dev/null
+++ b/src/mount/mount-tool.c
@@ -0,0 +1,1112 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2016 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <getopt.h>
+
+#include "libudev.h"
+#include "sd-bus.h"
+
+#include "bus-error.h"
+#include "bus-unit-util.h"
+#include "bus-util.h"
+#include "escape.h"
+#include "fstab-util.h"
+#include "pager.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "spawn-polkit-agent.h"
+#include "strv.h"
+#include "udev-util.h"
+#include "unit-name.h"
+#include "terminal-util.h"
+
+enum {
+        ACTION_DEFAULT,
+        ACTION_MOUNT,
+        ACTION_AUTOMOUNT,
+        ACTION_LIST,
+} arg_action = ACTION_DEFAULT;
+
+static bool arg_no_block = false;
+static bool arg_no_pager = false;
+static bool arg_ask_password = true;
+static bool arg_quiet = false;
+static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
+static bool arg_user = false;
+static const char *arg_host = NULL;
+static bool arg_discover = false;
+static char *arg_mount_what = NULL;
+static char *arg_mount_where = NULL;
+static char *arg_mount_type = NULL;
+static char *arg_mount_options = NULL;
+static char *arg_description = NULL;
+static char **arg_property = NULL;
+static usec_t arg_timeout_idle = USEC_INFINITY;
+static bool arg_timeout_idle_set = false;
+static char **arg_automount_property = NULL;
+static int arg_bind_device = -1;
+static bool arg_fsck = true;
+
+static void polkit_agent_open_if_enabled(void) {
+
+        /* Open the polkit agent as a child process if necessary */
+        if (!arg_ask_password)
+                return;
+
+        if (arg_transport != BUS_TRANSPORT_LOCAL)
+                return;
+
+        polkit_agent_open();
+}
+
+static void help(void) {
+        printf("%s [OPTIONS...] WHAT [WHERE]\n\n"
+               "Establish a mount or auto-mount point transiently.\n\n"
+               "  -h --help                       Show this help\n"
+               "     --version                    Show package version\n"
+               "     --no-block                   Do not wait until operation finished\n"
+               "     --no-pager                   Do not pipe output into a pager\n"
+               "     --no-ask-password            Do not prompt for password\n"
+               "  -q --quiet                      Suppress information messages during runtime\n"
+               "     --user                       Run as user unit\n"
+               "  -H --host=[USER@]HOST           Operate on remote host\n"
+               "  -M --machine=CONTAINER          Operate on local container\n"
+               "     --discover                   Discover mount device metadata\n"
+               "  -t --type=TYPE                  File system type\n"
+               "  -o --options=OPTIONS            Mount options\n"
+               "     --fsck=no                    Don't run file system check before mount\n"
+               "     --description=TEXT           Description for unit\n"
+               "  -p --property=NAME=VALUE        Set mount unit property\n"
+               "  -A --automount=BOOL             Create an auto-mount point\n"
+               "     --timeout-idle-sec=SEC       Specify automount idle timeout\n"
+               "     --automount-property=NAME=VALUE\n"
+               "                                  Set automount unit property\n"
+               "     --bind-device                Bind automount unit to device\n"
+               "     --list                       List mountable block devices\n"
+               , program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_VERSION = 0x100,
+                ARG_NO_BLOCK,
+                ARG_NO_PAGER,
+                ARG_NO_ASK_PASSWORD,
+                ARG_USER,
+                ARG_SYSTEM,
+                ARG_DISCOVER,
+                ARG_MOUNT_TYPE,
+                ARG_MOUNT_OPTIONS,
+                ARG_FSCK,
+                ARG_DESCRIPTION,
+                ARG_TIMEOUT_IDLE,
+                ARG_AUTOMOUNT,
+                ARG_AUTOMOUNT_PROPERTY,
+                ARG_BIND_DEVICE,
+                ARG_LIST,
+        };
+
+        static const struct option options[] = {
+                { "help",               no_argument,       NULL, 'h'                    },
+                { "version",            no_argument,       NULL, ARG_VERSION            },
+                { "no-block",           no_argument,       NULL, ARG_NO_BLOCK           },
+                { "no-pager",           no_argument,       NULL, ARG_NO_PAGER           },
+                { "no-ask-password",    no_argument,       NULL, ARG_NO_ASK_PASSWORD    },
+                { "quiet",              no_argument,       NULL, 'q'                    },
+                { "user",               no_argument,       NULL, ARG_USER               },
+                { "system",             no_argument,       NULL, ARG_SYSTEM             },
+                { "host",               required_argument, NULL, 'H'                    },
+                { "machine",            required_argument, NULL, 'M'                    },
+                { "discover",           no_argument,       NULL, ARG_DISCOVER           },
+                { "type",               required_argument, NULL, 't'                    },
+                { "options",            required_argument, NULL, 'o'                    },
+                { "description",        required_argument, NULL, ARG_DESCRIPTION        },
+                { "property",           required_argument, NULL, 'p'                    },
+                { "automount",          required_argument, NULL, ARG_AUTOMOUNT          },
+                { "timeout-idle-sec",   required_argument, NULL, ARG_TIMEOUT_IDLE       },
+                { "automount-property", required_argument, NULL, ARG_AUTOMOUNT_PROPERTY },
+                { "bind-device",        no_argument,       NULL, ARG_BIND_DEVICE        },
+                { "list",               no_argument,       NULL, ARG_LIST               },
+                {},
+        };
+
+        int r, c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "hqH:M:t:o:p:A", options, NULL)) >= 0)
+
+                switch (c) {
+
+                case 'h':
+                        help();
+                        return 0;
+
+                case ARG_VERSION:
+                        return version();
+
+                case ARG_NO_BLOCK:
+                        arg_no_block = true;
+                        break;
+
+                case ARG_NO_PAGER:
+                        arg_no_pager = true;
+                        break;
+
+                case ARG_NO_ASK_PASSWORD:
+                        arg_ask_password = false;
+                        break;
+
+                case 'q':
+                        arg_quiet = true;
+                        break;
+
+                case ARG_USER:
+                        arg_user = true;
+                        break;
+
+                case ARG_SYSTEM:
+                        arg_user = false;
+                        break;
+
+                case 'H':
+                        arg_transport = BUS_TRANSPORT_REMOTE;
+                        arg_host = optarg;
+                        break;
+
+                case 'M':
+                        arg_transport = BUS_TRANSPORT_MACHINE;
+                        arg_host = optarg;
+                        break;
+
+                case ARG_DISCOVER:
+                        arg_discover = true;
+                        break;
+
+                case 't':
+                        if (free_and_strdup(&arg_mount_type, optarg) < 0)
+                                return log_oom();
+                        break;
+
+                case 'o':
+                        if (free_and_strdup(&arg_mount_options, optarg) < 0)
+                                return log_oom();
+                        break;
+
+                case ARG_FSCK:
+                        r = parse_boolean(optarg);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to parse --fsck= argument: %s", optarg);
+
+                        arg_fsck = r;
+                        break;
+
+                case ARG_DESCRIPTION:
+                        if (free_and_strdup(&arg_description, optarg) < 0)
+                                return log_oom();
+                        break;
+
+                case 'p':
+                        if (strv_extend(&arg_property, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
+                case 'A':
+                        arg_action = ACTION_AUTOMOUNT;
+                        break;
+
+                case ARG_AUTOMOUNT:
+                        r = parse_boolean(optarg);
+                        if (r < 0)
+                                return log_error_errno(r, "--automount= expects a valid boolean parameter: %s", optarg);
+
+                        arg_action = r ? ACTION_AUTOMOUNT : ACTION_MOUNT;
+                        break;
+
+                case ARG_TIMEOUT_IDLE:
+                        r = parse_sec(optarg, &arg_timeout_idle);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to parse timeout: %s", optarg);
+
+                        break;
+
+                case ARG_AUTOMOUNT_PROPERTY:
+                        if (strv_extend(&arg_automount_property, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
+                case ARG_BIND_DEVICE:
+                        arg_bind_device = true;
+                        break;
+
+                case ARG_LIST:
+                        arg_action = ACTION_LIST;
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached("Unhandled option");
+                }
+
+        if (arg_user && arg_transport != BUS_TRANSPORT_LOCAL) {
+                log_error("Execution in user context is not supported on non-local systems.");
+                return -EINVAL;
+        }
+
+        if (arg_action == ACTION_LIST) {
+                if (optind < argc) {
+                        log_error("Too many arguments.");
+                        return -EINVAL;
+                }
+
+                if (arg_transport != BUS_TRANSPORT_LOCAL) {
+                        log_error("Listing devices only supported locally.");
+                        return -EOPNOTSUPP;
+                }
+        } else {
+                if (optind >= argc) {
+                        log_error("At least one argument required.");
+                        return -EINVAL;
+                }
+
+                if (argc > optind+2) {
+                        log_error("At most two arguments required.");
+                        return -EINVAL;
+                }
+
+                arg_mount_what = fstab_node_to_udev_node(argv[optind]);
+                if (!arg_mount_what)
+                        return log_oom();
+
+                if (argc > optind+1) {
+                        r = path_make_absolute_cwd(argv[optind+1], &arg_mount_where);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to make path absolute: %m");
+                } else
+                        arg_discover = true;
+
+                if (arg_discover && arg_transport != BUS_TRANSPORT_LOCAL) {
+                        log_error("Automatic mount location discovery is only supported locally.");
+                        return -EOPNOTSUPP;
+                }
+        }
+
+        return 1;
+}
+
+static int transient_unit_set_properties(sd_bus_message *m, char **properties) {
+        int r;
+
+        r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description);
+        if (r < 0)
+                return r;
+
+        if (arg_bind_device && is_device_path(arg_mount_what)) {
+                _cleanup_free_ char *device_unit = NULL;
+
+                r = unit_name_from_path(arg_mount_what, ".device", &device_unit);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append(m, "(sv)(sv)",
+                                          "After", "as", 1, device_unit,
+                                          "BindsTo", "as", 1, device_unit);
+                if (r < 0)
+                        return r;
+        }
+
+        r = bus_append_unit_property_assignment_many(m, properties);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+static int transient_mount_set_properties(sd_bus_message *m) {
+        int r;
+
+        assert(m);
+
+        r = transient_unit_set_properties(m, arg_property);
+        if (r < 0)
+                return r;
+
+        if (arg_mount_what) {
+                r = sd_bus_message_append(m, "(sv)", "What", "s", arg_mount_what);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_mount_type) {
+                r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_mount_type);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_mount_options) {
+                r = sd_bus_message_append(m, "(sv)", "Options", "s", arg_mount_options);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_fsck) {
+                _cleanup_free_ char *fsck = NULL;
+
+                r = unit_name_from_path_instance("systemd-fsck", arg_mount_what, ".service", &fsck);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append(m,
+                                          "(sv)(sv)",
+                                          "Requires", "as", 1, fsck,
+                                          "After", "as", 1, fsck);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static int transient_automount_set_properties(sd_bus_message *m) {
+        int r;
+
+        assert(m);
+
+        r = transient_unit_set_properties(m, arg_automount_property);
+        if (r < 0)
+                return r;
+
+        if (arg_timeout_idle != USEC_INFINITY) {
+                r = sd_bus_message_append(m, "(sv)", "TimeoutIdleUSec", "t", arg_timeout_idle);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static int start_transient_mount(
+                sd_bus *bus,
+                char **argv) {
+
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
+        _cleanup_free_ char *mount_unit = NULL;
+        int r;
+
+        if (!arg_no_block) {
+                r = bus_wait_for_jobs_new(bus, &w);
+                if (r < 0)
+                        return log_error_errno(r, "Could not watch jobs: %m");
+        }
+
+        r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit);
+        if (r < 0)
+                return log_error_errno(r, "Failed to make mount unit name: %m");
+
+        r = sd_bus_message_new_method_call(
+                        bus,
+                        &m,
+                        "org.freedesktop.systemd1",
+                        "/org/freedesktop/systemd1",
+                        "org.freedesktop.systemd1.Manager",
+                        "StartTransientUnit");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        /* Name and mode */
+        r = sd_bus_message_append(m, "ss", mount_unit, "fail");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        /* Properties */
+        r = sd_bus_message_open_container(m, 'a', "(sv)");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = transient_mount_set_properties(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        /* Auxiliary units */
+        r = sd_bus_message_append(m, "a(sa(sv))", 0);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        polkit_agent_open_if_enabled();
+
+        r = sd_bus_call(bus, m, 0, &error, &reply);
+        if (r < 0)
+                return log_error_errno(r, "Failed to start transient mount unit: %s", bus_error_message(&error, r));
+
+        if (w) {
+                const char *object;
+
+                r = sd_bus_message_read(reply, "o", &object);
+                if (r < 0)
+                        return bus_log_parse_error(r);
+
+                r = bus_wait_for_jobs_one(w, object, arg_quiet);
+                if (r < 0)
+                        return r;
+        }
+
+        if (!arg_quiet)
+                log_info("Started unit %s%s%s for mount point: %s%s%s",
+                         ansi_highlight(), mount_unit, ansi_normal(),
+                         ansi_highlight(), arg_mount_where, ansi_normal());
+
+        return 0;
+}
+
+static int start_transient_automount(
+                sd_bus *bus,
+                char **argv) {
+
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
+        _cleanup_free_ char *automount_unit = NULL, *mount_unit = NULL;
+        int r;
+
+        if (!arg_no_block) {
+                r = bus_wait_for_jobs_new(bus, &w);
+                if (r < 0)
+                        return log_error_errno(r, "Could not watch jobs: %m");
+        }
+
+        r = unit_name_from_path(arg_mount_where, ".automount", &automount_unit);
+        if (r < 0)
+                return log_error_errno(r, "Failed to make automount unit name: %m");
+
+        r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit);
+        if (r < 0)
+                return log_error_errno(r, "Failed to make mount unit name: %m");
+
+        r = sd_bus_message_new_method_call(
+                        bus,
+                        &m,
+                        "org.freedesktop.systemd1",
+                        "/org/freedesktop/systemd1",
+                        "org.freedesktop.systemd1.Manager",
+                        "StartTransientUnit");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        /* Name and mode */
+        r = sd_bus_message_append(m, "ss", automount_unit, "fail");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        /* Properties */
+        r = sd_bus_message_open_container(m, 'a', "(sv)");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = transient_automount_set_properties(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        /* Auxiliary units */
+        r = sd_bus_message_open_container(m, 'a', "(sa(sv))");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_open_container(m, 'r', "sa(sv)");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_append(m, "s", mount_unit);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_open_container(m, 'a', "(sv)");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = transient_mount_set_properties(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        polkit_agent_open_if_enabled();
+
+        r = sd_bus_call(bus, m, 0, &error, &reply);
+        if (r < 0)
+                return log_error_errno(r, "Failed to start transient automount unit: %s", bus_error_message(&error, r));
+
+        if (w) {
+                const char *object;
+
+                r = sd_bus_message_read(reply, "o", &object);
+                if (r < 0)
+                        return bus_log_parse_error(r);
+
+                r = bus_wait_for_jobs_one(w, object, arg_quiet);
+                if (r < 0)
+                        return r;
+        }
+
+        if (!arg_quiet)
+                log_info("Started unit %s%s%s for mount point: %s%s%s",
+                         ansi_highlight(), automount_unit, ansi_normal(),
+                         ansi_highlight(), arg_mount_where, ansi_normal());
+
+        return 0;
+}
+
+static int acquire_mount_type(struct udev_device *d) {
+        const char *v;
+
+        assert(d);
+
+        if (arg_mount_type)
+                return 0;
+
+        v = udev_device_get_property_value(d, "ID_FS_TYPE");
+        if (isempty(v))
+                return 0;
+
+        arg_mount_type = strdup(v);
+        if (!arg_mount_type)
+                return log_oom();
+
+        log_debug("Discovered type=%s", arg_mount_type);
+        return 1;
+}
+
+static int acquire_mount_options(struct udev_device *d) {
+        const char *v;
+
+        if (arg_mount_options)
+                return 0;
+
+        v = udev_device_get_property_value(d, "SYSTEMD_MOUNT_OPTIONS");
+        if (isempty(v))
+                return 0;
+
+        arg_mount_options = strdup(v);
+        if (!arg_mount_options)
+                return log_oom();
+
+        log_debug("Discovered options=%s", arg_mount_options);
+        return 1;
+}
+
+static const char *get_model(struct udev_device *d) {
+        const char *model;
+
+        assert(d);
+
+        model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE");
+        if (model)
+                return model;
+
+        return udev_device_get_property_value(d, "ID_MODEL");
+}
+
+static const char* get_label(struct udev_device *d) {
+        const char *label;
+
+        assert(d);
+
+        label = udev_device_get_property_value(d, "ID_FS_LABEL");
+        if (label)
+                return label;
+
+        return udev_device_get_property_value(d, "ID_PART_ENTRY_NAME");
+}
+
+static int acquire_mount_where(struct udev_device *d) {
+        const char *v;
+
+        if (arg_mount_where)
+                return 0;
+
+        v = udev_device_get_property_value(d, "SYSTEMD_MOUNT_WHERE");
+        if (isempty(v)) {
+                _cleanup_free_ char *escaped = NULL;
+                const char *name;
+
+                name = get_label(d);
+                if (!name)
+                        name = get_model(d);
+                if (!name) {
+                        const char *dn;
+
+                        dn = udev_device_get_devnode(d);
+                        if (!dn)
+                                return 0;
+
+                        name = basename(dn);
+                }
+
+                escaped = xescape(name, "\\");
+                if (!filename_is_valid(escaped))
+                        return 0;
+
+                arg_mount_where = strjoin("/run/media/system/", escaped, NULL);
+        } else
+                arg_mount_where = strdup(v);
+
+        if (!arg_mount_where)
+                return log_oom();
+
+        log_debug("Discovered where=%s", arg_mount_where);
+        return 1;
+}
+
+static int acquire_description(struct udev_device *d) {
+        const char *model, *label;
+
+        if (arg_description)
+                return 0;
+
+        model = get_model(d);
+
+        label = get_label(d);
+        if (!label)
+                label = udev_device_get_property_value(d, "ID_PART_ENTRY_NUMBER");
+
+        if (model && label)
+                arg_description = strjoin(model, " ", label, NULL);
+        else if (label)
+                arg_description = strdup(label);
+        else if (model)
+                arg_description = strdup(model);
+        else
+                return NULL;
+
+        if (!arg_description)
+                return log_oom();
+
+        log_debug("Discovered description=%s", arg_description);
+        return 1;
+}
+
+static int acquire_removable(struct udev_device *d) {
+        const char *v;
+
+        /* Shortcut this if there's no reason to check it */
+        if (arg_action != ACTION_DEFAULT && arg_timeout_idle_set && arg_bind_device >= 0)
+                return 0;
+
+        for (;;) {
+                v = udev_device_get_sysattr_value(d, "removable");
+                if (v)
+                        break;
+
+                d = udev_device_get_parent(d);
+                if (!d)
+                        return 0;
+
+                if (!streq_ptr(udev_device_get_subsystem(d), "block"))
+                        return 0;
+        }
+
+        if (parse_boolean(v) <= 0)
+                return 0;
+
+        log_debug("Discovered removable device.");
+
+        if (arg_action == ACTION_DEFAULT) {
+                log_debug("Automatically turning on automount.");
+                arg_action = ACTION_AUTOMOUNT;
+        }
+
+        if (!arg_timeout_idle_set) {
+                log_debug("Setting idle timeout to 1s.");
+                arg_timeout_idle = USEC_PER_SEC;
+        }
+
+        if (arg_bind_device < 0) {
+                log_debug("Binding automount unit to device.");
+                arg_bind_device = true;
+        }
+
+        return 1;
+}
+
+static int discover_device(void) {
+        _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+        _cleanup_udev_unref_ struct udev *udev = NULL;
+        struct stat st;
+        const char *v;
+        int r;
+
+        if (!arg_discover)
+                return 0;
+
+        if (!is_device_path(arg_mount_what)) {
+                log_error("Discovery only supported for block devices, don't know what to do.");
+                return -EINVAL;
+        }
+
+        if (stat(arg_mount_what, &st) < 0)
+                return log_error_errno(errno, "Can't stat %s: %m", arg_mount_what);
+
+        if (!S_ISBLK(st.st_mode)) {
+                log_error("Path %s is not a block device, don't know what to do.", arg_mount_what);
+                return -ENOTBLK;
+        }
+
+        udev = udev_new();
+        if (!udev)
+                return log_oom();
+
+        d = udev_device_new_from_devnum(udev, 'b', st.st_rdev);
+        if (!d)
+                return log_oom();
+
+        v = udev_device_get_property_value(d, "ID_FS_USAGE");
+        if (!streq_ptr(v, "filesystem")) {
+                log_error("%s does not contain a file system.", arg_mount_what);
+                return -EINVAL;
+        }
+
+        r = acquire_mount_type(d);
+        if (r < 0)
+                return r;
+
+        r = acquire_mount_options(d);
+        if (r < 0)
+                return r;
+
+        r = acquire_mount_where(d);
+        if (r < 0)
+                return r;
+
+        r = acquire_description(d);
+        if (r < 0)
+                return r;
+
+        r = acquire_removable(d);
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+enum {
+        COLUMN_NODE,
+        COLUMN_PATH,
+        COLUMN_MODEL,
+        COLUMN_WWN,
+        COLUMN_FSTYPE,
+        COLUMN_LABEL,
+        COLUMN_UUID,
+        _COLUMN_MAX,
+};
+
+struct item {
+        char* columns[_COLUMN_MAX];
+};
+
+static int compare_item(const void *a, const void *b) {
+        const struct item *x = a, *y = b;
+
+        if (x->columns[COLUMN_NODE] == y->columns[COLUMN_NODE])
+                return 0;
+        if (!x->columns[COLUMN_NODE])
+                return 1;
+        if (!y->columns[COLUMN_NODE])
+                return -1;
+
+        return path_compare(x->columns[COLUMN_NODE], y->columns[COLUMN_NODE]);
+}
+
+static int list_devices(void) {
+
+        static const char * const titles[_COLUMN_MAX] = {
+                [COLUMN_NODE] = "NODE",
+                [COLUMN_PATH] = "PATH",
+                [COLUMN_MODEL] = "MODEL",
+                [COLUMN_WWN] = "WWN",
+                [COLUMN_FSTYPE] = "TYPE",
+                [COLUMN_LABEL] = "LABEL",
+                [COLUMN_UUID] = "UUID"
+        };
+
+        _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
+        _cleanup_udev_unref_ struct udev *udev = NULL;
+        struct udev_list_entry *item = NULL, *first = NULL;
+        size_t n_allocated = 0, n = 0, i;
+        size_t column_width[_COLUMN_MAX];
+        struct item *items = NULL;
+        unsigned c;
+        int r;
+
+        for (c = 0; c < _COLUMN_MAX; c++)
+                column_width[c] = strlen(titles[c]);
+
+        udev = udev_new();
+        if (!udev)
+                return log_oom();
+
+        e = udev_enumerate_new(udev);
+        if (!e)
+                return log_oom();
+
+        r = udev_enumerate_add_match_subsystem(e, "block");
+        if (r < 0)
+                return log_error_errno(r, "Failed to add block match: %m");
+
+        r = udev_enumerate_add_match_property(e, "ID_FS_USAGE", "filesystem");
+        if (r < 0)
+                return log_error_errno(r, "Failed to add property match: %m");
+
+        r = udev_enumerate_scan_devices(e);
+        if (r < 0)
+                return log_error_errno(r, "Failed to scan devices: %m");
+
+        first = udev_enumerate_get_list_entry(e);
+        udev_list_entry_foreach(item, first) {
+                _cleanup_udev_device_unref_ struct udev_device *d;
+                struct item *j;
+
+                d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
+                if (!d) {
+                        r = log_oom();
+                        goto finish;
+                }
+
+                if (!GREEDY_REALLOC0(items, n_allocated, n+1)) {
+                        r = log_oom();
+                        goto finish;
+                }
+
+                j = items + n++;
+
+                for (c = 0; c < _COLUMN_MAX; c++) {
+                        const char *x;
+                        size_t k;
+
+                        switch (c) {
+
+                        case COLUMN_NODE:
+                                x = udev_device_get_devnode(d);
+                                break;
+
+                        case COLUMN_PATH:
+                                x = udev_device_get_property_value(d, "ID_PATH");
+                                break;
+
+                        case COLUMN_MODEL:
+                                x = get_model(d);
+                                break;
+
+                        case COLUMN_WWN:
+                                x = udev_device_get_property_value(d, "ID_WWN");
+                                break;
+
+                        case COLUMN_FSTYPE:
+                                x = udev_device_get_property_value(d, "ID_FS_TYPE");
+                                break;
+
+                        case COLUMN_LABEL:
+                                x = get_label(d);
+                                break;
+
+                        case COLUMN_UUID:
+                                x = udev_device_get_property_value(d, "ID_FS_UUID");
+                                break;
+                        }
+
+                        if (isempty(x))
+                                continue;
+
+                        j->columns[c] = strdup(x);
+                        if (!j->columns[c]) {
+                                r = log_oom();
+                                goto finish;
+                        }
+
+                        k = strlen(x);
+                        if (k > column_width[c])
+                                column_width[c] = k;
+                }
+        }
+
+        if (n == 0) {
+                log_info("No devices found.");
+                goto finish;
+        }
+
+        qsort_safe(items, n, sizeof(struct item), compare_item);
+
+        pager_open(arg_no_pager, false);
+
+        fputs(ansi_underline(), stdout);
+        for (c = 0; c < _COLUMN_MAX; c++) {
+                if (c > 0)
+                        fputc(' ', stdout);
+
+                printf("%-*s", (int) column_width[c], titles[c]);
+        }
+        fputs(ansi_normal(), stdout);
+        fputc('\n', stdout);
+
+        for (i = 0; i < n; i++) {
+                for (c = 0; c < _COLUMN_MAX; c++) {
+                        if (c > 0)
+                                fputc(' ', stdout);
+
+                        printf("%-*s", (int) column_width[c], strna(items[i].columns[c]));
+                }
+                fputc('\n', stdout);
+        }
+
+        r = 0;
+
+finish:
+        for (i = 0; i < n; i++)
+                for (c = 0; c < _COLUMN_MAX; c++)
+                        free(items[i].columns[c]);
+
+        free(items);
+        return r;
+}
+
+int main(int argc, char* argv[]) {
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+        int r;
+
+        log_parse_environment();
+        log_open();
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                goto finish;
+
+        if (arg_action == ACTION_LIST) {
+                r = list_devices();
+                goto finish;
+        }
+
+        r = discover_device();
+        if (r < 0)
+                goto finish;
+        if (!arg_mount_where) {
+                log_error("Can't figure out where to mount %s.", arg_mount_what);
+                r = -EINVAL;
+                goto finish;
+        }
+
+        path_kill_slashes(arg_mount_where);
+
+        if (path_equal(arg_mount_where, "/")) {
+                log_error("Refusing to operate on root directory.");
+                r = -EINVAL;
+                goto finish;
+        }
+
+        if (!path_is_safe(arg_mount_where)) {
+                log_error("Path is contains unsafe components.");
+                r = -EINVAL;
+                goto finish;
+        }
+
+        if (streq_ptr(arg_mount_type, "auto"))
+                arg_mount_type = mfree(arg_mount_type);
+        if (streq_ptr(arg_mount_options, "defaults"))
+                arg_mount_options = mfree(arg_mount_options);
+
+        if (!is_device_path(arg_mount_what))
+                arg_fsck = false;
+
+        if (arg_fsck && arg_mount_type && arg_transport == BUS_TRANSPORT_LOCAL) {
+                r = fsck_exists(arg_mount_type);
+                if (r < 0)
+                        log_warning_errno(r, "Couldn't determine whether fsck for %s exists, proceeding anyway.", arg_mount_type);
+                else if (r == 0) {
+                        log_debug("Disabling file system check as fsck for %s doesn't exist.", arg_mount_type);
+                        arg_fsck = false; /* fsck doesn't exist, let's not attempt it */
+                }
+        }
+
+        r = bus_connect_transport_systemd(arg_transport, arg_host, arg_user, &bus);
+        if (r < 0) {
+                log_error_errno(r, "Failed to create bus connection: %m");
+                goto finish;
+        }
+
+        switch (arg_action) {
+
+        case ACTION_MOUNT:
+        case ACTION_DEFAULT:
+                r = start_transient_mount(bus, argv + optind);
+                break;
+
+        case ACTION_AUTOMOUNT:
+                r = start_transient_automount(bus, argv + optind);
+                break;
+
+        default:
+                assert_not_reached("Unexpected action.");
+        }
+
+finish:
+        bus = sd_bus_flush_close_unref(bus);
+
+        pager_close();
+
+        free(arg_mount_what);
+        free(arg_mount_where);
+        free(arg_mount_type);
+        free(arg_mount_options);
+        free(arg_description);
+        strv_free(arg_property);
+        strv_free(arg_automount_property);
+
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}