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authorLennart Poettering <lennart@poettering.net>2012-10-17 21:23:30 +0200
committerLennart Poettering <lennart@poettering.net>2012-10-17 21:25:42 +0200
commitdbc4fbae58e39cb0d33738f0a4d1e74511ed1fb5 (patch)
treeeeb212d8a62a696a80b498ae91c2951387f5712c
parent0ce8860a15fb08ac358fb9c5347bd20c0bcdebcd (diff)
hostname: add new hostnamectl tool as text client for hostnamed
-rw-r--r--.gitignore1
-rw-r--r--Makefile.am19
-rw-r--r--man/hostname.xml9
-rw-r--r--man/hostnamectl.xml228
-rw-r--r--man/localtime.xml13
-rw-r--r--man/machine-info.xml9
-rw-r--r--man/systemd-hostnamed.service.xml5
-rw-r--r--man/timedatectl.xml8
-rw-r--r--src/hostname/hostnamectl.c525
9 files changed, 809 insertions, 8 deletions
diff --git a/.gitignore b/.gitignore
index bc72be8210..c41db45be2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/hostnamectl
/timedatectl
/test-date
/install-tree
diff --git a/Makefile.am b/Makefile.am
index ad7a749cac..8e88c42c8f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3062,6 +3062,25 @@ MANPAGES_ALIAS += \
man/systemd-hostnamed.8
man/systemd-hostnamed.8: man/systemd-hostnamed.service.8
+
+hostnamectl_SOURCES = \
+ src/hostname/hostnamectl.c
+
+hostnamectl_CFLAGS = \
+ $(AM_CFLAGS) \
+ $(DBUS_CFLAGS)
+
+hostnamectl_LDADD = \
+ libsystemd-shared.la \
+ libsystemd-dbus.la \
+ libsystemd-id128-internal.la
+
+bin_PROGRAMS += \
+ hostnamectl
+
+MANPAGES += \
+ man/hostnamectl.1
+
endif
polkitpolicy_in_files += \
diff --git a/man/hostname.xml b/man/hostname.xml
index 2ada32ff71..84a2961664 100644
--- a/man/hostname.xml
+++ b/man/hostname.xml
@@ -70,6 +70,11 @@
<para>Depending on the operating system other
configuration files might be checked for configuration
of the host name as well, however only as fallback.</para>
+
+ <para>You may use
+ <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ to change the value of this file from the command
+ line.</para>
</refsect1>
<refsect1>
@@ -88,7 +93,9 @@
<citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
diff --git a/man/hostnamectl.xml b/man/hostnamectl.xml
new file mode 100644
index 0000000000..955e79bfd7
--- /dev/null
+++ b/man/hostnamectl.xml
@@ -0,0 +1,228 @@
+<?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">
+
+<!--
+ This file is part of systemd.
+
+ Copyright 2012 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="hostnamectl">
+
+ <refentryinfo>
+ <title>hostnamectl</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>hostnamectl</refentrytitle>
+ <manvolnum>1</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>hostnamectl</refname>
+ <refpurpose>Control the system hostname</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <cmdsynopsis>
+ <command>hostnamectl <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="req">COMMAND</arg></command>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><command>hostnamectl</command> may be used to
+ query and change the system hostname and related
+ settings.</para>
+
+ <para>This tool distuingishes three different host
+ names: the high-level "pretty" hostname which might
+ include all all kinds of special characters
+ (e.g. "Lennart's Laptop"), the static hostname which
+ is used to initialize the kernel hostname at boot
+ (e.g. "lennarts-laptop"), and the transient hostname
+ which might be assigned temporarily due to network
+ configuration and might revert back to the static
+ hostname if network connectivity is lost and is only
+ temporarily written to the kernel hostname
+ (e.g. "dhcp-47-11").</para>
+
+ <para>Note that the pretty hostname has little
+ restrictions on the characters used, while the static
+ and transient hostnames are limited to the usually
+ accepted characters of internet domain names.</para>
+
+ <para>The static host name is stored in
+ <filename>/etc/hostname</filename>, see
+ <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for more information. The pretty host name and icon
+ name are stored in
+ <filename>/etc/machine-info</filename>, see
+ <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>The following options are understood:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>--help</option></term>
+ <term><option>-h</option></term>
+
+ <listitem><para>Prints a short help
+ text and exits.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--version</option></term>
+
+ <listitem><para>Prints a short version
+ string and exits.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--no-ask-password</option></term>
+
+ <listitem><para>Don't query the user
+ for authentication for privileged
+ operations.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-H</option></term>
+ <term><option>--host</option></term>
+
+ <listitem><para>Execute operation
+ remotely. Specify a hostname, or
+ username and hostname separated by @,
+ to connect to. This will use SSH to
+ talk to a remote
+ system.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--static</option></term>
+ <term><option>--transient</option></term>
+ <term><option>--pretty</option></term>
+
+ <listitem><para>If
+ <command>set-hostname</command> is
+ invoked and one or more of these
+ options are passed only the selected
+ hostnames is
+ updated.</para></listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>The following commands are understood:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><command>status</command></term>
+
+ <listitem><para>Show current system
+ hostname and related
+ information.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><command>set-hostname [NAME]</command></term>
+
+ <listitem><para>Set the system
+ hostname. By default this will alter
+ the pretty, the static, and the
+ transient hostname alike, however if
+ one or more of
+ <option>--static</option>,
+ <option>--transient</option>,
+ <option>--pretty</option> are used
+ only the selected hostnames are
+ changed. If the pretty hostname is
+ being set, and static or transient are
+ being set as well the specified host
+ name will be simplified in regards to
+ the character set used before the
+ latter are updated. This is done by
+ replacing spaces by "-" and removing
+ special characters. This ensures that
+ the pretty and the static hostname
+ are always closely related while still
+ following the validity rules of the
+ specific name. This simplification of
+ the hostname string is not done if
+ only the transient and/or static host
+ names are set, and the pretty host
+ name is left untouched. Pass the empty
+ string "" as hostname to reset the
+ selected hostnames to their default
+ (usually
+ "localhost").</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><command>set-icon-name [NAME]</command></term>
+
+ <listitem><para>Set the system icon
+ name. The icon name is used by some
+ graphical applications to visualize
+ this host. The icon name should follow
+ the <ulink
+ url="http://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html">Icon
+ Naming Specification</ulink>. Pass an
+ empty string to this operatoin to
+ reset the icon name to the default
+ value which is determined from the
+ system form factor and possibly other
+ parameters.</para></listitem>
+ </varlistentry>
+
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Exit status</title>
+
+ <para>On success 0 is returned, a non-zero failure
+ code otherwise.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>
diff --git a/man/localtime.xml b/man/localtime.xml
index c0e87bf78f..88c84a3682 100644
--- a/man/localtime.xml
+++ b/man/localtime.xml
@@ -82,14 +82,21 @@
<para>The time zone may be overridden for individual
programs by using the TZ environment variable. See
<citerefentry><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
+
+ <para>You may use
+ <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ to change the settings of this file from the command
+ line.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
- <citerefentry><refentrytitle>tzset</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>3</manvolnum></citerefentry>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>tzset</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>3</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>timedatectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-timedated.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
diff --git a/man/machine-info.xml b/man/machine-info.xml
index e27b600211..b310d71334 100644
--- a/man/machine-info.xml
+++ b/man/machine-info.xml
@@ -74,6 +74,11 @@
<para>Depending on the operating system other
configuration files might be checked for machine
information as well, however only as fallback.</para>
+
+ <para>You may use
+ <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ to change the settings of this file from the command
+ line.</para>
</refsect1>
<refsect1>
@@ -140,7 +145,9 @@ ICON_NAME=computer-laptop</programlisting>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
diff --git a/man/systemd-hostnamed.service.xml b/man/systemd-hostnamed.service.xml
index 9fee2a096d..555bb7a2df 100644
--- a/man/systemd-hostnamed.service.xml
+++ b/man/systemd-hostnamed.service.xml
@@ -74,8 +74,9 @@
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>sethostname</refentrytitle><manvolnum>2</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>machine-info</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>sethostname</refentrytitle><manvolnum>2</manvolnum></citerefentry>
</para>
</refsect1>
diff --git a/man/timedatectl.xml b/man/timedatectl.xml
index 8fb4e38f37..9065577692 100644
--- a/man/timedatectl.xml
+++ b/man/timedatectl.xml
@@ -154,7 +154,12 @@
<command>list-timezones</command>. If
the RTC is configured to be in the
local time this will also update the
- RTC time.</para></listitem>
+ RTC time. This call will alter the
+ <filename>/etc/localtime</filename>
+ symlink. See
+ <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for more
+ information.</para></listitem>
</varlistentry>
<varlistentry>
@@ -235,6 +240,7 @@
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>hwclock</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>date</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>localtime</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-timedated.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
diff --git a/src/hostname/hostnamectl.c b/src/hostname/hostnamectl.c
new file mode 100644
index 0000000000..de2f7242ea
--- /dev/null
+++ b/src/hostname/hostnamectl.c
@@ -0,0 +1,525 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2012 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 <stdlib.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <string.h>
+#include <sys/timex.h>
+
+#include "dbus-common.h"
+#include "util.h"
+#include "spawn-polkit-agent.h"
+#include "build.h"
+#include "hwclock.h"
+#include "strv.h"
+#include "sd-id128.h"
+#include "virt.h"
+
+static enum transport {
+ TRANSPORT_NORMAL,
+ TRANSPORT_SSH,
+ TRANSPORT_POLKIT
+} arg_transport = TRANSPORT_NORMAL;
+static bool arg_ask_password = true;
+static const char *arg_host = NULL;
+static bool arg_set_transient = false;
+static bool arg_set_pretty = false;
+static bool arg_set_static = false;
+
+static void polkit_agent_open_if_enabled(void) {
+
+ /* Open the polkit agent as a child process if necessary */
+
+ if (!arg_ask_password)
+ return;
+
+ polkit_agent_open();
+}
+
+typedef struct StatusInfo {
+ const char *hostname;
+ const char *static_hostname;
+ const char *pretty_hostname;
+ const char *icon_name;
+} StatusInfo;
+
+static void print_status_info(StatusInfo *i) {
+ sd_id128_t mid, bid;
+ int r;
+ const char *id;
+
+ assert(i);
+
+ printf(" Static hostname: %s\n",
+ strna(i->static_hostname));
+
+ if (!streq_ptr(i->hostname, i->static_hostname))
+ printf("Transient hostname: %s\n",
+ strna(i->hostname));
+
+ printf(" Pretty hostname: %s\n"
+ " Icon name: %s\n",
+ strna(i->pretty_hostname),
+ strna(i->icon_name));
+
+ r = sd_id128_get_machine(&mid);
+ if (r >= 0)
+ printf(" Machine ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(mid));
+
+ r = sd_id128_get_boot(&bid);
+ if (r >= 0)
+ printf(" Boot ID: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(bid));
+
+ if (detect_virtualization(&id) >= 0)
+ printf(" Virtualization: %s\n", id);
+}
+
+static int status_property(const char *name, DBusMessageIter *iter, StatusInfo *i) {
+ assert(name);
+ assert(iter);
+
+ switch (dbus_message_iter_get_arg_type(iter)) {
+
+ case DBUS_TYPE_STRING: {
+ const char *s;
+
+ dbus_message_iter_get_basic(iter, &s);
+ if (!isempty(s)) {
+ if (streq(name, "Hostname"))
+ i->hostname = s;
+ if (streq(name, "StaticHostname"))
+ i->static_hostname = s;
+ if (streq(name, "PrettyHostname"))
+ i->pretty_hostname = s;
+ if (streq(name, "IconName"))
+ i->icon_name = s;
+ }
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int show_status(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ const char *interface = "";
+ int r;
+ DBusMessageIter iter, sub, sub2, sub3;
+ StatusInfo info;
+
+ assert(args);
+
+ r = bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ "org.freedesktop.DBus.Properties",
+ "GetAll",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &interface,
+ DBUS_TYPE_INVALID);
+ if (r < 0)
+ return r;
+
+ if (!dbus_message_iter_init(reply, &iter) ||
+ dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
+ dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ zero(info);
+ dbus_message_iter_recurse(&iter, &sub);
+
+ while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
+ const char *name;
+
+ if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ dbus_message_iter_recurse(&sub, &sub2);
+
+ if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
+ log_error("Failed to parse reply.");
+ return -EIO;
+ }
+
+ dbus_message_iter_recurse(&sub2, &sub3);
+
+ r = status_property(name, &sub3, &info);
+ if (r < 0) {
+ log_error("Failed to parse reply.");
+ return r;
+ }
+
+ dbus_message_iter_next(&sub);
+ }
+
+ print_status_info(&info);
+ return 0;
+}
+
+static char* hostname_simplify(char *s) {
+ char *p, *d;
+
+ for (p = s, d = s; *p; p++) {
+ if ((*p >= 'a' && *p <= 'z') ||
+ (*p >= '0' && *p <= '9') ||
+ *p == '-' || *p == '_')
+ *(d++) = *p;
+ else if (*p >= 'A' && *p <= 'Z')
+ *(d++) = *p - 'A' + 'a';
+ else if (*p == ' ')
+ *(d++) = '-';
+ }
+
+ *d = 0;
+
+ strshorten(s, HOST_NAME_MAX);
+ return s;
+}
+
+static int set_hostname(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ dbus_bool_t interactive = true;
+ _cleanup_free_ char *h = NULL;
+ const char *hostname = args[1];
+ int r;
+
+ assert(args);
+ assert(n == 2);
+
+ polkit_agent_open_if_enabled();
+
+ if (arg_set_pretty) {
+ r = bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ "org.freedesktop.hostname1",
+ "SetPrettyHostname",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &hostname,
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+ if (r < 0)
+ return r;
+
+ h = strdup(hostname);
+ if (!h)
+ return log_oom();
+
+ hostname = hostname_simplify(h);
+ }
+
+ if (arg_set_static) {
+ r = bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ "org.freedesktop.hostname1",
+ "SetStaticHostname",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &hostname,
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+
+ if (r < 0)
+ return r;
+ }
+
+ if (arg_set_transient) {
+ r = bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ "org.freedesktop.hostname1",
+ "SetHostname",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &hostname,
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int set_icon_name(DBusConnection *bus, char **args, unsigned n) {
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ dbus_bool_t interactive = true;
+
+ assert(args);
+ assert(n == 2);
+
+ polkit_agent_open_if_enabled();
+
+ return bus_method_call_with_reply(
+ bus,
+ "org.freedesktop.hostname1",
+ "/org/freedesktop/hostname1",
+ "org.freedesktop.hostname1",
+ "SetIconName",
+ &reply,
+ NULL,
+ DBUS_TYPE_STRING, &args[1],
+ DBUS_TYPE_BOOLEAN, &interactive,
+ DBUS_TYPE_INVALID);
+}
+
+static int help(void) {
+
+ printf("%s [OPTIONS...] {COMMAND} ...\n\n"
+ "Query or set system hostname.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --no-ask-password Do not prompt for password\n"
+ " --transient Only set transient hostname\n"
+ " --static Only set static hostname\n"
+ " --pretty Only set pretty hostname\n"
+ " -H --host=[USER@]HOST Operate on remote host\n\n"
+ "Commands:\n"
+ " status Show current hostname settings\n"
+ " set-hostname [NAME] Set system hostname\n"
+ " set-icon-name [NAME] Set icon name for host\n",
+ program_invocation_short_name);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_ASK_PASSWORD,
+ ARG_SET_TRANSIENT,
+ ARG_SET_STATIC,
+ ARG_SET_PRETTY
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "transient", no_argument, NULL, ARG_SET_TRANSIENT },
+ { "static", no_argument, NULL, ARG_SET_STATIC },
+ { "pretty", no_argument, NULL, ARG_SET_PRETTY },
+ { "host", required_argument, NULL, 'H' },
+ { "privileged", no_argument, NULL, 'P' },
+ { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hp:as:H:P", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(DISTRIBUTION);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case 'P':
+ arg_transport = TRANSPORT_POLKIT;
+ break;
+
+ case 'H':
+ arg_transport = TRANSPORT_SSH;
+ arg_host = optarg;
+ break;
+
+ case ARG_SET_TRANSIENT:
+ arg_set_transient = true;
+ break;
+
+ case ARG_SET_PRETTY:
+ arg_set_pretty = true;
+ break;
+
+ case ARG_SET_STATIC:
+ arg_set_static = true;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+ }
+
+ if (!arg_set_transient && !arg_set_pretty && !arg_set_static)
+ arg_set_transient = arg_set_pretty = arg_set_static = true;
+
+ return 1;
+}
+
+static int hostnamectl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
+
+ static const struct {
+ const char* verb;
+ const enum {
+ MORE,
+ LESS,
+ EQUAL
+ } argc_cmp;
+ const int argc;
+ int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
+ } verbs[] = {
+ { "status", LESS, 1, show_status },
+ { "set-hostname", LESS, 2, set_hostname },
+ { "set-icon-name", EQUAL, 2, set_icon_name },
+ };
+
+ int left;
+ unsigned i;
+
+ assert(argc >= 0);
+ assert(argv);
+ assert(error);
+
+ left = argc - optind;
+
+ if (left <= 0)
+ /* Special rule: no arguments means "status" */
+ i = 0;
+ else {
+ if (streq(argv[optind], "help")) {
+ help();
+ return 0;
+ }
+
+ for (i = 0; i < ELEMENTSOF(verbs); i++)
+ if (streq(argv[optind], verbs[i].verb))
+ break;
+
+ if (i >= ELEMENTSOF(verbs)) {
+ log_error("Unknown operation %s", argv[optind]);
+ return -EINVAL;
+ }
+ }
+
+ switch (verbs[i].argc_cmp) {
+
+ case EQUAL:
+ if (left != verbs[i].argc) {
+ log_error("Invalid number of arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ case MORE:
+ if (left < verbs[i].argc) {
+ log_error("Too few arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ case LESS:
+ if (left > verbs[i].argc) {
+ log_error("Too many arguments.");
+ return -EINVAL;
+ }
+
+ break;
+
+ default:
+ assert_not_reached("Unknown comparison operator.");
+ }
+
+ if (!bus) {
+ log_error("Failed to get D-Bus connection: %s", error->message);
+ return -EIO;
+ }
+
+ return verbs[i].dispatch(bus, argv + optind, left);
+}
+
+int main(int argc, char *argv[]) {
+ int r, retval = EXIT_FAILURE;
+ DBusConnection *bus = NULL;
+ DBusError error;
+
+ dbus_error_init(&error);
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r < 0)
+ goto finish;
+ else if (r == 0) {
+ retval = EXIT_SUCCESS;
+ goto finish;
+ }
+
+ if (arg_transport == TRANSPORT_NORMAL)
+ bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
+ else if (arg_transport == TRANSPORT_POLKIT)
+ bus_connect_system_polkit(&bus, &error);
+ else if (arg_transport == TRANSPORT_SSH)
+ bus_connect_system_ssh(NULL, arg_host, &bus, &error);
+ else
+ assert_not_reached("Uh, invalid transport...");
+
+ r = hostnamectl_main(bus, argc, argv, &error);
+ retval = r < 0 ? EXIT_FAILURE : r;
+
+finish:
+ if (bus) {
+ dbus_connection_flush(bus);
+ dbus_connection_close(bus);
+ dbus_connection_unref(bus);
+ }
+
+ dbus_error_free(&error);
+ dbus_shutdown();
+
+ return retval;
+}