./move.sh

2 files changed, 1291 insertions, 0 deletions

diff --git a/src/systemd-run/Makefile b/src/systemd-run/Makefile
new file mode 100644
index 0000000000..282ef5168c
--- /dev/null
+++ b/src/systemd-run/Makefile
@@ -0,0 +1,33 @@
+#  -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+#  This file is part of systemd.
+#
+#  Copyright 2010-2012 Lennart Poettering
+#  Copyright 2010-2012 Kay Sievers
+#  Copyright 2013 Zbigniew Jędrzejewski-Szmek
+#  Copyright 2013 David Strauss
+#  Copyright 2016 Luke Shumaker
+#
+#  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 $(dir $(lastword $(MAKEFILE_LIST)))/../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+systemd_run_SOURCES = \
+	src/run/run.c
+
+systemd_run_LDADD = \
+	libshared.la
+
+$(eval $(value automake2autothing))
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/systemd-run/run.c b/src/systemd-run/run.c
new file mode 100644
index 0000000000..67706f84a0
--- /dev/null
+++ b/src/systemd-run/run.c
@@ -0,0 +1,1258 @@
+/***
+  This file is part of systemd.
+
+  Copyright 2013 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 <stdio.h>
+
+#include <systemd/sd-bus.h>
+#include <systemd/sd-event.h>
+
+#include "alloc-util.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "calendarspec.h"
+#include "env-util.h"
+#include "fd-util.h"
+#include "formats-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "ptyfwd.h"
+#include "signal-util.h"
+#include "spawn-polkit-agent.h"
+#include "strv.h"
+#include "terminal-util.h"
+#include "unit-name.h"
+#include "user-util.h"
+
+static bool arg_ask_password = true;
+static bool arg_scope = false;
+static bool arg_remain_after_exit = false;
+static bool arg_no_block = false;
+static const char *arg_unit = NULL;
+static const char *arg_description = NULL;
+static const char *arg_slice = NULL;
+static bool arg_send_sighup = false;
+static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
+static const char *arg_host = NULL;
+static bool arg_user = false;
+static const char *arg_service_type = NULL;
+static const char *arg_exec_user = NULL;
+static const char *arg_exec_group = NULL;
+static int arg_nice = 0;
+static bool arg_nice_set = false;
+static char **arg_environment = NULL;
+static char **arg_property = NULL;
+static bool arg_pty = false;
+static usec_t arg_on_active = 0;
+static usec_t arg_on_boot = 0;
+static usec_t arg_on_startup = 0;
+static usec_t arg_on_unit_active = 0;
+static usec_t arg_on_unit_inactive = 0;
+static const char *arg_on_calendar = NULL;
+static char **arg_timer_property = NULL;
+static bool arg_quiet = false;
+
+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...] {COMMAND} [ARGS...]\n\n"
+               "Run the specified command in a transient scope or service or timer\n"
+               "unit. If timer option is specified and unit is exist which is\n"
+               "specified with --unit option then command can be omitted.\n\n"
+               "  -h --help                       Show this help\n"
+               "     --version                    Show package version\n"
+               "     --no-ask-password            Do not prompt for password\n"
+               "     --user                       Run as user unit\n"
+               "  -H --host=[USER@]HOST           Operate on remote host\n"
+               "  -M --machine=CONTAINER          Operate on local container\n"
+               "     --scope                      Run this as scope rather than service\n"
+               "     --unit=UNIT                  Run under the specified unit name\n"
+               "  -p --property=NAME=VALUE        Set unit property\n"
+               "     --description=TEXT           Description for unit\n"
+               "     --slice=SLICE                Run in the specified slice\n"
+               "     --no-block                   Do not wait until operation finished\n"
+               "  -r --remain-after-exit          Leave service around until explicitly stopped\n"
+               "     --send-sighup                Send SIGHUP when terminating\n"
+               "     --service-type=TYPE          Service type\n"
+               "     --uid=USER                   Run as system user\n"
+               "     --gid=GROUP                  Run as system group\n"
+               "     --nice=NICE                  Nice level\n"
+               "     --setenv=NAME=VALUE          Set environment\n"
+               "  -t --pty                        Run service on pseudo tty\n"
+               "  -q --quiet                      Suppress information messages during runtime\n\n"
+               "Timer options:\n\n"
+               "     --on-active=SECONDS          Run after SECONDS delay\n"
+               "     --on-boot=SECONDS            Run SECONDS after machine was booted up\n"
+               "     --on-startup=SECONDS         Run SECONDS after systemd activation\n"
+               "     --on-unit-active=SECONDS     Run SECONDS after the last activation\n"
+               "     --on-unit-inactive=SECONDS   Run SECONDS after the last deactivation\n"
+               "     --on-calendar=SPEC           Realtime timer\n"
+               "     --timer-property=NAME=VALUE  Set timer unit property\n",
+               program_invocation_short_name);
+}
+
+static bool with_timer(void) {
+        return arg_on_active || arg_on_boot || arg_on_startup || arg_on_unit_active || arg_on_unit_inactive || arg_on_calendar;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_VERSION = 0x100,
+                ARG_NO_ASK_PASSWORD,
+                ARG_USER,
+                ARG_SYSTEM,
+                ARG_SCOPE,
+                ARG_UNIT,
+                ARG_DESCRIPTION,
+                ARG_SLICE,
+                ARG_SEND_SIGHUP,
+                ARG_EXEC_USER,
+                ARG_EXEC_GROUP,
+                ARG_SERVICE_TYPE,
+                ARG_NICE,
+                ARG_SETENV,
+                ARG_TTY,
+                ARG_ON_ACTIVE,
+                ARG_ON_BOOT,
+                ARG_ON_STARTUP,
+                ARG_ON_UNIT_ACTIVE,
+                ARG_ON_UNIT_INACTIVE,
+                ARG_ON_CALENDAR,
+                ARG_TIMER_PROPERTY,
+                ARG_NO_BLOCK,
+        };
+
+        static const struct option options[] = {
+                { "help",              no_argument,       NULL, 'h'                  },
+                { "version",           no_argument,       NULL, ARG_VERSION          },
+                { "user",              no_argument,       NULL, ARG_USER             },
+                { "system",            no_argument,       NULL, ARG_SYSTEM           },
+                { "scope",             no_argument,       NULL, ARG_SCOPE            },
+                { "unit",              required_argument, NULL, ARG_UNIT             },
+                { "description",       required_argument, NULL, ARG_DESCRIPTION      },
+                { "slice",             required_argument, NULL, ARG_SLICE            },
+                { "remain-after-exit", no_argument,       NULL, 'r'                  },
+                { "send-sighup",       no_argument,       NULL, ARG_SEND_SIGHUP      },
+                { "host",              required_argument, NULL, 'H'                  },
+                { "machine",           required_argument, NULL, 'M'                  },
+                { "service-type",      required_argument, NULL, ARG_SERVICE_TYPE     },
+                { "uid",               required_argument, NULL, ARG_EXEC_USER        },
+                { "gid",               required_argument, NULL, ARG_EXEC_GROUP       },
+                { "nice",              required_argument, NULL, ARG_NICE             },
+                { "setenv",            required_argument, NULL, ARG_SETENV           },
+                { "property",          required_argument, NULL, 'p'                  },
+                { "tty",               no_argument,       NULL, 't'                  },
+                { "quiet",             no_argument,       NULL, 'q'                  },
+                { "on-active",         required_argument, NULL, ARG_ON_ACTIVE        },
+                { "on-boot",           required_argument, NULL, ARG_ON_BOOT          },
+                { "on-startup",        required_argument, NULL, ARG_ON_STARTUP       },
+                { "on-unit-active",    required_argument, NULL, ARG_ON_UNIT_ACTIVE   },
+                { "on-unit-inactive",  required_argument, NULL, ARG_ON_UNIT_INACTIVE },
+                { "on-calendar",       required_argument, NULL, ARG_ON_CALENDAR      },
+                { "timer-property",    required_argument, NULL, ARG_TIMER_PROPERTY   },
+                { "no-block",          no_argument,       NULL, ARG_NO_BLOCK         },
+                { "no-ask-password",   no_argument,       NULL, ARG_NO_ASK_PASSWORD },
+                {},
+        };
+
+        int r, c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "+hrH:M:p:tq", options, NULL)) >= 0)
+
+                switch (c) {
+
+                case 'h':
+                        help();
+                        return 0;
+
+                case ARG_NO_ASK_PASSWORD:
+                        arg_ask_password = false;
+                        break;
+
+                case ARG_VERSION:
+                        return version();
+
+                case ARG_USER:
+                        arg_user = true;
+                        break;
+
+                case ARG_SYSTEM:
+                        arg_user = false;
+                        break;
+
+                case ARG_SCOPE:
+                        arg_scope = true;
+                        break;
+
+                case ARG_UNIT:
+                        arg_unit = optarg;
+                        break;
+
+                case ARG_DESCRIPTION:
+                        arg_description = optarg;
+                        break;
+
+                case ARG_SLICE:
+                        arg_slice = optarg;
+                        break;
+
+                case ARG_SEND_SIGHUP:
+                        arg_send_sighup = true;
+                        break;
+
+                case 'r':
+                        arg_remain_after_exit = true;
+                        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_SERVICE_TYPE:
+                        arg_service_type = optarg;
+                        break;
+
+                case ARG_EXEC_USER:
+                        arg_exec_user = optarg;
+                        break;
+
+                case ARG_EXEC_GROUP:
+                        arg_exec_group = optarg;
+                        break;
+
+                case ARG_NICE:
+                        r = safe_atoi(optarg, &arg_nice);
+                        if (r < 0 || arg_nice < PRIO_MIN || arg_nice >= PRIO_MAX) {
+                                log_error("Failed to parse nice value");
+                                return -EINVAL;
+                        }
+
+                        arg_nice_set = true;
+                        break;
+
+                case ARG_SETENV:
+                        if (strv_extend(&arg_environment, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
+                case 'p':
+                        if (strv_extend(&arg_property, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
+                case 't':
+                        arg_pty = true;
+                        break;
+
+                case 'q':
+                        arg_quiet = true;
+                        break;
+
+                case ARG_ON_ACTIVE:
+
+                        r = parse_sec(optarg, &arg_on_active);
+                        if (r < 0) {
+                                log_error("Failed to parse timer value: %s", optarg);
+                                return r;
+                        }
+
+                        break;
+
+                case ARG_ON_BOOT:
+
+                        r = parse_sec(optarg, &arg_on_boot);
+                        if (r < 0) {
+                                log_error("Failed to parse timer value: %s", optarg);
+                                return r;
+                        }
+
+                        break;
+
+                case ARG_ON_STARTUP:
+
+                        r = parse_sec(optarg, &arg_on_startup);
+                        if (r < 0) {
+                                log_error("Failed to parse timer value: %s", optarg);
+                                return r;
+                        }
+
+                        break;
+
+                case ARG_ON_UNIT_ACTIVE:
+
+                        r = parse_sec(optarg, &arg_on_unit_active);
+                        if (r < 0) {
+                                log_error("Failed to parse timer value: %s", optarg);
+                                return r;
+                        }
+
+                        break;
+
+                case ARG_ON_UNIT_INACTIVE:
+
+                        r = parse_sec(optarg, &arg_on_unit_inactive);
+                        if (r < 0) {
+                                log_error("Failed to parse timer value: %s", optarg);
+                                return r;
+                        }
+
+                        break;
+
+                case ARG_ON_CALENDAR: {
+                        CalendarSpec *spec = NULL;
+
+                        r = calendar_spec_from_string(optarg, &spec);
+                        if (r < 0) {
+                                log_error("Invalid calendar spec: %s", optarg);
+                                return r;
+                        }
+
+                        calendar_spec_free(spec);
+                        arg_on_calendar = optarg;
+                        break;
+                }
+
+                case ARG_TIMER_PROPERTY:
+
+                        if (strv_extend(&arg_timer_property, optarg) < 0)
+                                return log_oom();
+
+                        break;
+
+                case ARG_NO_BLOCK:
+                        arg_no_block = true;
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached("Unhandled option");
+                }
+
+        if ((optind >= argc) && (!arg_unit || !with_timer())) {
+                log_error("Command line to execute required.");
+                return -EINVAL;
+        }
+
+        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_scope && arg_transport != BUS_TRANSPORT_LOCAL) {
+                log_error("Scope execution is not supported on non-local systems.");
+                return -EINVAL;
+        }
+
+        if (arg_scope && (arg_remain_after_exit || arg_service_type)) {
+                log_error("--remain-after-exit and --service-type= are not supported in --scope mode.");
+                return -EINVAL;
+        }
+
+        if (arg_pty && (with_timer() || arg_scope)) {
+                log_error("--pty is not compatible in timer or --scope mode.");
+                return -EINVAL;
+        }
+
+        if (arg_pty && arg_transport == BUS_TRANSPORT_REMOTE) {
+                log_error("--pty is only supported when connecting to the local system or containers.");
+                return -EINVAL;
+        }
+
+        if (arg_scope && with_timer()) {
+                log_error("Timer options are not supported in --scope mode.");
+                return -EINVAL;
+        }
+
+        if (arg_timer_property && !with_timer()) {
+                log_error("--timer-property= has no effect without any other timer options.");
+                return -EINVAL;
+        }
+
+        return 1;
+}
+
+static int transient_unit_set_properties(sd_bus_message *m, char **properties) {
+        char **i;
+        int r;
+
+        r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description);
+        if (r < 0)
+                return r;
+
+        STRV_FOREACH(i, properties) {
+                r = bus_append_unit_property_assignment(m, *i);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static int transient_cgroup_set_properties(sd_bus_message *m) {
+        int r;
+        assert(m);
+
+        if (!isempty(arg_slice)) {
+                _cleanup_free_ char *slice;
+
+                r = unit_name_mangle_with_suffix(arg_slice, UNIT_NAME_NOGLOB, ".slice", &slice);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static int transient_kill_set_properties(sd_bus_message *m) {
+        assert(m);
+
+        if (arg_send_sighup)
+                return sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", arg_send_sighup);
+        else
+                return 0;
+}
+
+static int transient_service_set_properties(sd_bus_message *m, char **argv, const char *pty_path) {
+        int r;
+
+        assert(m);
+
+        r = transient_unit_set_properties(m, arg_property);
+        if (r < 0)
+                return r;
+
+        r = transient_kill_set_properties(m);
+        if (r < 0)
+                return r;
+
+        r = transient_cgroup_set_properties(m);
+        if (r < 0)
+                return r;
+
+        if (arg_remain_after_exit) {
+                r = sd_bus_message_append(m, "(sv)", "RemainAfterExit", "b", arg_remain_after_exit);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_service_type) {
+                r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_service_type);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_exec_user) {
+                r = sd_bus_message_append(m, "(sv)", "User", "s", arg_exec_user);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_exec_group) {
+                r = sd_bus_message_append(m, "(sv)", "Group", "s", arg_exec_group);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_nice_set) {
+                r = sd_bus_message_append(m, "(sv)", "Nice", "i", arg_nice);
+                if (r < 0)
+                        return r;
+        }
+
+        if (pty_path) {
+                const char *e;
+
+                r = sd_bus_message_append(m,
+                                          "(sv)(sv)(sv)(sv)",
+                                          "StandardInput", "s", "tty",
+                                          "StandardOutput", "s", "tty",
+                                          "StandardError", "s", "tty",
+                                          "TTYPath", "s", pty_path);
+                if (r < 0)
+                        return r;
+
+                e = getenv("TERM");
+                if (e) {
+                        char *n;
+
+                        n = strjoina("TERM=", e);
+                        r = sd_bus_message_append(m,
+                                                  "(sv)",
+                                                  "Environment", "as", 1, n);
+                        if (r < 0)
+                                return r;
+                }
+        }
+
+        if (!strv_isempty(arg_environment)) {
+                r = sd_bus_message_open_container(m, 'r', "sv");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append(m, "s", "Environment");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_open_container(m, 'v', "as");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append_strv(m, arg_environment);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_close_container(m);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_close_container(m);
+                if (r < 0)
+                        return r;
+        }
+
+        /* Exec container */
+        {
+                r = sd_bus_message_open_container(m, 'r', "sv");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append(m, "s", "ExecStart");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_open_container(m, 'v', "a(sasb)");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_open_container(m, 'a', "(sasb)");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_open_container(m, 'r', "sasb");
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append(m, "s", argv[0]);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append_strv(m, argv);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_append(m, "b", false);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_close_container(m);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_close_container(m);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_close_container(m);
+                if (r < 0)
+                        return r;
+
+                r = sd_bus_message_close_container(m);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static int transient_scope_set_properties(sd_bus_message *m) {
+        int r;
+
+        assert(m);
+
+        r = transient_unit_set_properties(m, arg_property);
+        if (r < 0)
+                return r;
+
+        r = transient_kill_set_properties(m);
+        if (r < 0)
+                return r;
+
+        r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, (uint32_t) getpid());
+        if (r < 0)
+                return r;
+
+        return 0;
+}
+
+static int transient_timer_set_properties(sd_bus_message *m) {
+        int r;
+
+        assert(m);
+
+        r = transient_unit_set_properties(m, arg_timer_property);
+        if (r < 0)
+                return r;
+
+        /* Automatically clean up our transient timers */
+        r = sd_bus_message_append(m, "(sv)", "RemainAfterElapse", "b", false);
+        if (r < 0)
+                return r;
+
+        if (arg_on_active) {
+                r = sd_bus_message_append(m, "(sv)", "OnActiveSec", "t", arg_on_active);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_on_boot) {
+                r = sd_bus_message_append(m, "(sv)", "OnBootSec", "t", arg_on_boot);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_on_startup) {
+                r = sd_bus_message_append(m, "(sv)", "OnStartupSec", "t", arg_on_startup);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_on_unit_active) {
+                r = sd_bus_message_append(m, "(sv)", "OnUnitActiveSec", "t", arg_on_unit_active);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_on_unit_inactive) {
+                r = sd_bus_message_append(m, "(sv)", "OnUnitInactiveSec", "t", arg_on_unit_inactive);
+                if (r < 0)
+                        return r;
+        }
+
+        if (arg_on_calendar) {
+                r = sd_bus_message_append(m, "(sv)", "OnCalendar", "s", arg_on_calendar);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+static int make_unit_name(sd_bus *bus, UnitType t, char **ret) {
+        const char *unique, *id;
+        char *p;
+        int r;
+
+        assert(bus);
+        assert(t >= 0);
+        assert(t < _UNIT_TYPE_MAX);
+
+        r = sd_bus_get_unique_name(bus, &unique);
+        if (r < 0) {
+                sd_id128_t rnd;
+
+                /* We couldn't get the unique name, which is a pretty
+                 * common case if we are connected to systemd
+                 * directly. In that case, just pick a random uuid as
+                 * name */
+
+                r = sd_id128_randomize(&rnd);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to generate random run unit name: %m");
+
+                if (asprintf(ret, "run-r" SD_ID128_FORMAT_STR ".%s", SD_ID128_FORMAT_VAL(rnd), unit_type_to_string(t)) < 0)
+                        return log_oom();
+
+                return 0;
+        }
+
+        /* We managed to get the unique name, then let's use that to
+         * name our transient units. */
+
+        id = startswith(unique, ":1.");
+        if (!id) {
+                log_error("Unique name %s has unexpected format.", unique);
+                return -EINVAL;
+        }
+
+        p = strjoin("run-u", id, ".", unit_type_to_string(t), NULL);
+        if (!p)
+                return log_oom();
+
+        *ret = p;
+        return 0;
+}
+
+static int start_transient_service(
+                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 *service = NULL, *pty_path = NULL;
+        _cleanup_close_ int master = -1;
+        int r;
+
+        assert(bus);
+        assert(argv);
+
+        if (arg_pty) {
+
+                if (arg_transport == BUS_TRANSPORT_LOCAL) {
+                        master = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC|O_NDELAY);
+                        if (master < 0)
+                                return log_error_errno(errno, "Failed to acquire pseudo tty: %m");
+
+                        r = ptsname_malloc(master, &pty_path);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to determine tty name: %m");
+
+                        if (unlockpt(master) < 0)
+                                return log_error_errno(errno, "Failed to unlock tty: %m");
+
+                } else if (arg_transport == BUS_TRANSPORT_MACHINE) {
+                        _cleanup_(sd_bus_unrefp) sd_bus *system_bus = NULL;
+                        const char *s;
+
+                        r = sd_bus_default_system(&system_bus);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to connect to system bus: %m");
+
+                        r = sd_bus_call_method(system_bus,
+                                               "org.freedesktop.machine1",
+                                               "/org/freedesktop/machine1",
+                                               "org.freedesktop.machine1.Manager",
+                                               "OpenMachinePTY",
+                                               &error,
+                                               &reply,
+                                               "s", arg_host);
+                        if (r < 0) {
+                                log_error("Failed to get machine PTY: %s", bus_error_message(&error, -r));
+                                return r;
+                        }
+
+                        r = sd_bus_message_read(reply, "hs", &master, &s);
+                        if (r < 0)
+                                return bus_log_parse_error(r);
+
+                        reply = sd_bus_message_unref(reply);
+
+                        master = fcntl(master, F_DUPFD_CLOEXEC, 3);
+                        if (master < 0)
+                                return log_error_errno(errno, "Failed to duplicate master fd: %m");
+
+                        pty_path = strdup(s);
+                        if (!pty_path)
+                                return log_oom();
+                } else
+                        assert_not_reached("Can't allocate tty via ssh");
+        }
+
+        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");
+        }
+
+        if (arg_unit) {
+                r = unit_name_mangle_with_suffix(arg_unit, UNIT_NAME_NOGLOB, ".service", &service);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to mangle unit name: %m");
+        } else {
+                r = make_unit_name(bus, UNIT_SERVICE, &service);
+                if (r < 0)
+                        return r;
+        }
+
+        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", service, "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_service_set_properties(m, argv, pty_path);
+        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 service 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 (master >= 0) {
+                _cleanup_(pty_forward_freep) PTYForward *forward = NULL;
+                _cleanup_(sd_event_unrefp) sd_event *event = NULL;
+                char last_char = 0;
+
+                r = sd_event_default(&event);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to get event loop: %m");
+
+                assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGWINCH, SIGTERM, SIGINT, -1) >= 0);
+
+                (void) sd_event_add_signal(event, NULL, SIGINT, NULL, NULL);
+                (void) sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL);
+
+                if (!arg_quiet)
+                        log_info("Running as unit %s.\nPress ^] three times within 1s to disconnect TTY.", service);
+
+                r = pty_forward_new(event, master, PTY_FORWARD_IGNORE_INITIAL_VHANGUP, &forward);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to create PTY forwarder: %m");
+
+                r = sd_event_loop(event);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to run event loop: %m");
+
+                pty_forward_get_last_char(forward, &last_char);
+
+                forward = pty_forward_free(forward);
+
+                if (!arg_quiet && last_char != '\n')
+                        fputc('\n', stdout);
+
+        } else if (!arg_quiet)
+                log_info("Running as unit %s.", service);
+
+        return 0;
+}
+
+static int start_transient_scope(
+                sd_bus *bus,
+                char **argv) {
+
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
+        _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
+        _cleanup_strv_free_ char **env = NULL, **user_env = NULL;
+        _cleanup_free_ char *scope = NULL;
+        const char *object = NULL;
+        int r;
+
+        assert(bus);
+        assert(argv);
+
+        r = bus_wait_for_jobs_new(bus, &w);
+        if (r < 0)
+                return log_oom();
+
+        if (arg_unit) {
+                r = unit_name_mangle_with_suffix(arg_unit, UNIT_NAME_NOGLOB, ".scope", &scope);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to mangle scope name: %m");
+        } else {
+                r = make_unit_name(bus, UNIT_SCOPE, &scope);
+                if (r < 0)
+                        return r;
+        }
+
+        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", scope, "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_scope_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) {
+                log_error("Failed to start transient scope unit: %s", bus_error_message(&error, -r));
+                return r;
+        }
+
+        if (arg_nice_set) {
+                if (setpriority(PRIO_PROCESS, 0, arg_nice) < 0)
+                        return log_error_errno(errno, "Failed to set nice level: %m");
+        }
+
+        if (arg_exec_group) {
+                gid_t gid;
+
+                r = get_group_creds(&arg_exec_group, &gid);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to resolve group %s: %m", arg_exec_group);
+
+                if (setresgid(gid, gid, gid) < 0)
+                        return log_error_errno(errno, "Failed to change GID to " GID_FMT ": %m", gid);
+        }
+
+        if (arg_exec_user) {
+                const char *home, *shell;
+                uid_t uid;
+                gid_t gid;
+
+                r = get_user_creds(&arg_exec_user, &uid, &gid, &home, &shell);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to resolve user %s: %m", arg_exec_user);
+
+                r = strv_extendf(&user_env, "HOME=%s", home);
+                if (r < 0)
+                        return log_oom();
+
+                r = strv_extendf(&user_env, "SHELL=%s", shell);
+                if (r < 0)
+                        return log_oom();
+
+                r = strv_extendf(&user_env, "USER=%s", arg_exec_user);
+                if (r < 0)
+                        return log_oom();
+
+                r = strv_extendf(&user_env, "LOGNAME=%s", arg_exec_user);
+                if (r < 0)
+                        return log_oom();
+
+                if (!arg_exec_group) {
+                        if (setresgid(gid, gid, gid) < 0)
+                                return log_error_errno(errno, "Failed to change GID to " GID_FMT ": %m", gid);
+                }
+
+                if (setresuid(uid, uid, uid) < 0)
+                        return log_error_errno(errno, "Failed to change UID to " UID_FMT ": %m", uid);
+        }
+
+        env = strv_env_merge(3, environ, user_env, arg_environment);
+        if (!env)
+                return log_oom();
+
+        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("Running scope as unit %s.", scope);
+
+        execvpe(argv[0], argv, env);
+
+        return log_error_errno(errno, "Failed to execute: %m");
+}
+
+static int start_transient_timer(
+                sd_bus *bus,
+                char **argv) {
+
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
+        _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
+        _cleanup_free_ char *timer = NULL, *service = NULL;
+        const char *object = NULL;
+        int r;
+
+        assert(bus);
+        assert(argv);
+
+        r = bus_wait_for_jobs_new(bus, &w);
+        if (r < 0)
+                return log_oom();
+
+        if (arg_unit) {
+                switch (unit_name_to_type(arg_unit)) {
+
+                case UNIT_SERVICE:
+                        service = strdup(arg_unit);
+                        if (!service)
+                                return log_oom();
+
+                        r = unit_name_change_suffix(service, ".timer", &timer);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to change unit suffix: %m");
+                        break;
+
+                case UNIT_TIMER:
+                        timer = strdup(arg_unit);
+                        if (!timer)
+                                return log_oom();
+
+                        r = unit_name_change_suffix(timer, ".service", &service);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to change unit suffix: %m");
+                        break;
+
+                default:
+                        r = unit_name_mangle_with_suffix(arg_unit, UNIT_NAME_NOGLOB, ".service", &service);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to mangle unit name: %m");
+
+                        r = unit_name_mangle_with_suffix(arg_unit, UNIT_NAME_NOGLOB, ".timer", &timer);
+                        if (r < 0)
+                                return log_error_errno(r, "Failed to mangle unit name: %m");
+
+                        break;
+                }
+        } else {
+                r = make_unit_name(bus, UNIT_SERVICE, &service);
+                if (r < 0)
+                        return r;
+
+                r = unit_name_change_suffix(service, ".timer", &timer);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to change unit suffix: %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", timer, "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_timer_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_open_container(m, 'a', "(sa(sv))");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        if (argv[0]) {
+                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", service);
+                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_service_set_properties(m, argv, NULL);
+                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) {
+                log_error("Failed to start transient timer unit: %s", bus_error_message(&error, -r));
+                return r;
+        }
+
+        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;
+
+        log_info("Running timer as unit %s.", timer);
+        if (argv[0])
+                log_info("Will run service as unit %s.", service);
+
+        return 0;
+}
+
+int main(int argc, char* argv[]) {
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+        _cleanup_free_ char *description = NULL, *command = NULL;
+        int r;
+
+        log_parse_environment();
+        log_open();
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                goto finish;
+
+        if (argc > optind && arg_transport == BUS_TRANSPORT_LOCAL) {
+                /* Patch in an absolute path */
+
+                r = find_binary(argv[optind], &command);
+                if (r < 0) {
+                        log_error_errno(r, "Failed to find executable %s: %m", argv[optind]);
+                        goto finish;
+                }
+
+                argv[optind] = command;
+        }
+
+        if (!arg_description) {
+                description = strv_join(argv + optind, " ");
+                if (!description) {
+                        r = log_oom();
+                        goto finish;
+                }
+
+                if (arg_unit && isempty(description)) {
+                        r = free_and_strdup(&description, arg_unit);
+                        if (r < 0)
+                                goto finish;
+                }
+
+                arg_description = description;
+        }
+
+        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;
+        }
+
+        if (arg_scope)
+                r = start_transient_scope(bus, argv + optind);
+        else if (with_timer())
+                r = start_transient_timer(bus, argv + optind);
+        else
+                r = start_transient_service(bus, argv + optind);
+
+finish:
+        strv_free(arg_environment);
+        strv_free(arg_property);
+        strv_free(arg_timer_property);
+
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}