diff options
Diffstat (limited to 'src/grp-system/systemctl/systemctl.c')
| -rw-r--r-- | src/grp-system/systemctl/systemctl.c | 8408 |
1 files changed, 8408 insertions, 0 deletions
diff --git a/src/grp-system/systemctl/systemctl.c b/src/grp-system/systemctl/systemctl.c new file mode 100644 index 0000000000..086c9b494b --- /dev/null +++ b/src/grp-system/systemctl/systemctl.c @@ -0,0 +1,8408 @@ +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + Copyright 2013 Marc-Antoine Perennou + + 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 <errno.h> +#include <fcntl.h> +#include <getopt.h> +#include <locale.h> +#include <stdbool.h> +#include <stddef.h> +#include <stdio.h> +#include <string.h> +#include <sys/reboot.h> +#include <sys/socket.h> +#include <unistd.h> + +#include <linux/reboot.h> + +#include <systemd/sd-bus.h> +#include <systemd/sd-daemon.h> +#include <systemd/sd-login.h> + +#include "sd-bus/bus-common-errors.h" +#include "sd-bus/bus-error.h" +#include "sd-bus/bus-message.h" +#include "sd-bus/bus-util.h" +#include "systemd-basic/alloc-util.h" +#include "systemd-basic/cgroup-util.h" +#include "systemd-basic/copy.h" +#include "systemd-basic/env-util.h" +#include "systemd-basic/exit-status.h" +#include "systemd-basic/fd-util.h" +#include "systemd-basic/fileio.h" +#include "systemd-basic/formats-util.h" +#include "systemd-basic/fs-util.h" +#include "systemd-basic/glob-util.h" +#include "systemd-basic/hostname-util.h" +#include "systemd-basic/io-util.h" +#include "systemd-basic/list.h" +#include "systemd-basic/locale-util.h" +#include "systemd-basic/log.h" +#include "systemd-basic/macro.h" +#include "systemd-basic/mkdir.h" +#include "systemd-basic/parse-util.h" +#include "systemd-basic/path-util.h" +#include "systemd-basic/process-util.h" +#include "systemd-basic/rlimit-util.h" +#include "systemd-basic/set.h" +#include "systemd-basic/sigbus.h" +#include "systemd-basic/signal-util.h" +#include "systemd-basic/socket-util.h" +#include "systemd-basic/special.h" +#include "systemd-basic/stat-util.h" +#include "systemd-basic/strv.h" +#include "systemd-basic/terminal-util.h" +#include "systemd-basic/unit-name.h" +#include "systemd-basic/user-util.h" +#include "systemd-basic/util.h" +#include "systemd-basic/verbs.h" +#include "systemd-basic/virt.h" +#include "systemd-shared/bus-unit-util.h" +#include "systemd-shared/cgroup-show.h" +#include "systemd-shared/dropin.h" +#include "systemd-shared/efivars.h" +#include "systemd-shared/initreq.h" +#include "systemd-shared/install.h" +#include "systemd-shared/logs-show.h" +#include "systemd-shared/pager.h" +#include "systemd-shared/path-lookup.h" +#include "systemd-shared/spawn-ask-password-agent.h" +#include "systemd-shared/spawn-polkit-agent.h" +#include "systemd-shared/utmp-wtmp.h" + +/* The init script exit status codes + 0 program is running or service is OK + 1 program is dead and /var/run pid file exists + 2 program is dead and /var/lock lock file exists + 3 program is not running + 4 program or service status is unknown + 5-99 reserved for future LSB use + 100-149 reserved for distribution use + 150-199 reserved for application use + 200-254 reserved +*/ +enum { + EXIT_PROGRAM_RUNNING_OR_SERVICE_OK = 0, + EXIT_PROGRAM_DEAD_AND_PID_EXISTS = 1, + EXIT_PROGRAM_DEAD_AND_LOCK_FILE_EXISTS = 2, + EXIT_PROGRAM_NOT_RUNNING = 3, + EXIT_PROGRAM_OR_SERVICES_STATUS_UNKNOWN = 4, +}; + +static char **arg_types = NULL; +static char **arg_states = NULL; +static char **arg_properties = NULL; +static bool arg_all = false; +static enum dependency { + DEPENDENCY_FORWARD, + DEPENDENCY_REVERSE, + DEPENDENCY_AFTER, + DEPENDENCY_BEFORE, + _DEPENDENCY_MAX +} arg_dependency = DEPENDENCY_FORWARD; +static const char *arg_job_mode = "replace"; +static UnitFileScope arg_scope = UNIT_FILE_SYSTEM; +static bool arg_wait = false; +static bool arg_no_block = false; +static bool arg_no_legend = false; +static bool arg_no_pager = false; +static bool arg_no_wtmp = false; +static bool arg_no_sync = false; +static bool arg_no_wall = false; +static bool arg_no_reload = false; +static bool arg_value = false; +static bool arg_show_types = false; +static bool arg_ignore_inhibitors = false; +static bool arg_dry = false; +static bool arg_quiet = false; +static bool arg_full = false; +static bool arg_recursive = false; +static int arg_force = 0; +static bool arg_ask_password = false; +static bool arg_runtime = false; +static UnitFilePresetMode arg_preset_mode = UNIT_FILE_PRESET_FULL; +static char **arg_wall = NULL; +static const char *arg_kill_who = NULL; +static int arg_signal = SIGTERM; +static char *arg_root = NULL; +static usec_t arg_when = 0; +static enum action { + _ACTION_INVALID, + ACTION_SYSTEMCTL, + ACTION_HALT, + ACTION_POWEROFF, + ACTION_REBOOT, + ACTION_KEXEC, + ACTION_EXIT, + ACTION_SUSPEND, + ACTION_HIBERNATE, + ACTION_HYBRID_SLEEP, + ACTION_RUNLEVEL2, + ACTION_RUNLEVEL3, + ACTION_RUNLEVEL4, + ACTION_RUNLEVEL5, + ACTION_RESCUE, + ACTION_EMERGENCY, + ACTION_DEFAULT, + ACTION_RELOAD, + ACTION_REEXEC, + ACTION_RUNLEVEL, + ACTION_CANCEL_SHUTDOWN, + _ACTION_MAX +} arg_action = ACTION_SYSTEMCTL; +static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; +static const char *arg_host = NULL; +static unsigned arg_lines = 10; +static OutputMode arg_output = OUTPUT_SHORT; +static bool arg_plain = false; +static bool arg_firmware_setup = false; +static bool arg_now = false; + +static int daemon_reload(int argc, char *argv[], void* userdata); +static int trivial_method(int argc, char *argv[], void *userdata); +static int halt_now(enum action a); +static int get_state_one_unit(sd_bus *bus, const char *name, UnitActiveState *active_state); + +static bool original_stdout_is_tty; + +typedef enum BusFocus { + BUS_FULL, /* The full bus indicated via --system or --user */ + BUS_MANAGER, /* The manager itself, possibly directly, possibly via the bus */ + _BUS_FOCUS_MAX +} BusFocus; + +static sd_bus *busses[_BUS_FOCUS_MAX] = {}; + +static UnitFileFlags args_to_flags(void) { + return (arg_runtime ? UNIT_FILE_RUNTIME : 0) | + (arg_force ? UNIT_FILE_FORCE : 0); +} + +static int acquire_bus(BusFocus focus, sd_bus **ret) { + int r; + + assert(focus < _BUS_FOCUS_MAX); + assert(ret); + + /* We only go directly to the manager, if we are using a local transport */ + if (arg_transport != BUS_TRANSPORT_LOCAL) + focus = BUS_FULL; + + if (!busses[focus]) { + bool user; + + user = arg_scope != UNIT_FILE_SYSTEM; + + if (focus == BUS_MANAGER) + r = bus_connect_transport_systemd(arg_transport, arg_host, user, &busses[focus]); + else + r = bus_connect_transport(arg_transport, arg_host, user, &busses[focus]); + if (r < 0) + return log_error_errno(r, "Failed to connect to bus: %m"); + + (void) sd_bus_set_allow_interactive_authorization(busses[focus], arg_ask_password); + } + + *ret = busses[focus]; + return 0; +} + +static void release_busses(void) { + BusFocus w; + + for (w = 0; w < _BUS_FOCUS_MAX; w++) + busses[w] = sd_bus_flush_close_unref(busses[w]); +} + +static int map_string_no_copy(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + char *s; + const char **p = userdata; + int r; + + r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &s); + if (r < 0) + return r; + + if (!isempty(s)) + *p = s; + + return 0; +} + +static void ask_password_agent_open_if_enabled(void) { + + /* Open the password agent as a child process if necessary */ + + if (!arg_ask_password) + return; + + if (arg_scope != UNIT_FILE_SYSTEM) + return; + + if (arg_transport != BUS_TRANSPORT_LOCAL) + return; + + ask_password_agent_open(); +} + +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_scope != UNIT_FILE_SYSTEM) + return; + + if (arg_transport != BUS_TRANSPORT_LOCAL) + return; + + polkit_agent_open(); +} + +static OutputFlags get_output_flags(void) { + return + arg_all * OUTPUT_SHOW_ALL | + arg_full * OUTPUT_FULL_WIDTH | + (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH | + colors_enabled() * OUTPUT_COLOR | + !arg_quiet * OUTPUT_WARN_CUTOFF; +} + +static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) { + assert(error); + + if (!sd_bus_error_is_set(error)) + return r; + + if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) || + sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) || + sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) || + sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE)) + return EXIT_NOPERMISSION; + + if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT)) + return EXIT_NOTINSTALLED; + + if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) || + sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED)) + return EXIT_NOTIMPLEMENTED; + + if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) + return EXIT_NOTCONFIGURED; + + if (r != 0) + return r; + + return EXIT_FAILURE; +} + +static bool install_client_side(void) { + + /* Decides when to execute enable/disable/... operations + * client-side rather than server-side. */ + + if (running_in_chroot() > 0) + return true; + + if (sd_booted() <= 0) + return true; + + if (!isempty(arg_root)) + return true; + + if (arg_scope == UNIT_FILE_GLOBAL) + return true; + + /* Unsupported environment variable, mostly for debugging purposes */ + if (getenv_bool("SYSTEMCTL_INSTALL_CLIENT_SIDE") > 0) + return true; + + return false; +} + +static int compare_unit_info(const void *a, const void *b) { + const UnitInfo *u = a, *v = b; + const char *d1, *d2; + int r; + + /* First, order by machine */ + if (!u->machine && v->machine) + return -1; + if (u->machine && !v->machine) + return 1; + if (u->machine && v->machine) { + r = strcasecmp(u->machine, v->machine); + if (r != 0) + return r; + } + + /* Second, order by unit type */ + d1 = strrchr(u->id, '.'); + d2 = strrchr(v->id, '.'); + if (d1 && d2) { + r = strcasecmp(d1, d2); + if (r != 0) + return r; + } + + /* Third, order by name */ + return strcasecmp(u->id, v->id); +} + +static const char* unit_type_suffix(const char *name) { + const char *dot; + + dot = strrchr(name, '.'); + if (!dot) + return ""; + + return dot + 1; +} + +static bool output_show_unit(const UnitInfo *u, char **patterns) { + assert(u); + + if (!strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE)) + return false; + + if (arg_types && !strv_find(arg_types, unit_type_suffix(u->id))) + return false; + + if (arg_all) + return true; + + /* Note that '--all' is not purely a state filter, but also a + * filter that hides units that "follow" other units (which is + * used for device units that appear under different names). */ + if (!isempty(u->following)) + return false; + + if (!strv_isempty(arg_states)) + return true; + + /* By default show all units except the ones in inactive + * state and with no pending job */ + if (u->job_id > 0) + return true; + + if (streq(u->active_state, "inactive")) + return false; + + return true; +} + +static int output_units_list(const UnitInfo *unit_infos, unsigned c) { + unsigned circle_len = 0, id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len, max_desc_len; + const UnitInfo *u; + unsigned n_shown = 0; + int job_count = 0; + + max_id_len = strlen("UNIT"); + load_len = strlen("LOAD"); + active_len = strlen("ACTIVE"); + sub_len = strlen("SUB"); + job_len = strlen("JOB"); + max_desc_len = strlen("DESCRIPTION"); + + for (u = unit_infos; u < unit_infos + c; u++) { + max_id_len = MAX(max_id_len, strlen(u->id) + (u->machine ? strlen(u->machine)+1 : 0)); + load_len = MAX(load_len, strlen(u->load_state)); + active_len = MAX(active_len, strlen(u->active_state)); + sub_len = MAX(sub_len, strlen(u->sub_state)); + max_desc_len = MAX(max_desc_len, strlen(u->description)); + + if (u->job_id != 0) { + job_len = MAX(job_len, strlen(u->job_type)); + job_count++; + } + + if (!arg_no_legend && + (streq(u->active_state, "failed") || + STR_IN_SET(u->load_state, "error", "not-found", "masked"))) + circle_len = 2; + } + + if (!arg_full && original_stdout_is_tty) { + unsigned basic_len; + + id_len = MIN(max_id_len, 25u); /* as much as it needs, but at most 25 for now */ + basic_len = circle_len + 5 + id_len + 5 + active_len + sub_len; + + if (job_count) + basic_len += job_len + 1; + + if (basic_len < (unsigned) columns()) { + unsigned extra_len, incr; + extra_len = columns() - basic_len; + + /* Either UNIT already got 25, or is fully satisfied. + * Grant up to 25 to DESC now. */ + incr = MIN(extra_len, 25u); + desc_len = incr; + extra_len -= incr; + + /* Of the remainder give as much as the ID needs to the ID, and give the rest to the + * description but not more than it needs. */ + if (extra_len > 0) { + incr = MIN(max_id_len - id_len, extra_len); + id_len += incr; + desc_len += MIN(extra_len - incr, max_desc_len - desc_len); + } + } + } else { + id_len = max_id_len; + desc_len = max_desc_len; + } + + for (u = unit_infos; u < unit_infos + c; u++) { + _cleanup_free_ char *e = NULL, *j = NULL; + const char *on_underline = "", *off_underline = ""; + const char *on_loaded = "", *off_loaded = ""; + const char *on_active = "", *off_active = ""; + const char *on_circle = "", *off_circle = ""; + const char *id; + bool circle = false, underline = false; + + if (!n_shown && !arg_no_legend) { + + if (circle_len > 0) + fputs(" ", stdout); + + printf("%s%-*s %-*s %-*s %-*s ", + ansi_underline(), + id_len, "UNIT", + load_len, "LOAD", + active_len, "ACTIVE", + sub_len, "SUB"); + + if (job_count) + printf("%-*s ", job_len, "JOB"); + + printf("%-*.*s%s\n", + desc_len, + !arg_full && arg_no_pager ? (int) desc_len : -1, + "DESCRIPTION", + ansi_normal()); + } + + n_shown++; + + if (u + 1 < unit_infos + c && + !streq(unit_type_suffix(u->id), unit_type_suffix((u + 1)->id))) { + on_underline = ansi_underline(); + off_underline = ansi_normal(); + underline = true; + } + + if (STR_IN_SET(u->load_state, "error", "not-found", "masked") && !arg_plain) { + on_circle = ansi_highlight_yellow(); + off_circle = ansi_normal(); + circle = true; + on_loaded = underline ? ansi_highlight_red_underline() : ansi_highlight_red(); + off_loaded = underline ? on_underline : ansi_normal(); + } else if (streq(u->active_state, "failed") && !arg_plain) { + on_circle = ansi_highlight_red(); + off_circle = ansi_normal(); + circle = true; + on_active = underline ? ansi_highlight_red_underline() : ansi_highlight_red(); + off_active = underline ? on_underline : ansi_normal(); + } + + if (u->machine) { + j = strjoin(u->machine, ":", u->id, NULL); + if (!j) + return log_oom(); + + id = j; + } else + id = u->id; + + if (arg_full) { + e = ellipsize(id, id_len, 33); + if (!e) + return log_oom(); + + id = e; + } + + if (circle_len > 0) + printf("%s%s%s ", on_circle, circle ? special_glyph(BLACK_CIRCLE) : " ", off_circle); + + printf("%s%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s", + on_underline, + on_active, id_len, id, off_active, + on_loaded, load_len, u->load_state, off_loaded, + on_active, active_len, u->active_state, + sub_len, u->sub_state, off_active, + job_count ? job_len + 1 : 0, u->job_id ? u->job_type : ""); + + printf("%-*.*s%s\n", + desc_len, + !arg_full && arg_no_pager ? (int) desc_len : -1, + u->description, + off_underline); + } + + if (!arg_no_legend) { + const char *on, *off; + + if (n_shown) { + puts("\n" + "LOAD = Reflects whether the unit definition was properly loaded.\n" + "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n" + "SUB = The low-level unit activation state, values depend on unit type."); + puts(job_count ? "JOB = Pending job for the unit.\n" : ""); + on = ansi_highlight(); + off = ansi_normal(); + } else { + on = ansi_highlight_red(); + off = ansi_normal(); + } + + if (arg_all) + printf("%s%u loaded units listed.%s\n" + "To show all installed unit files use 'systemctl list-unit-files'.\n", + on, n_shown, off); + else + printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n" + "To show all installed unit files use 'systemctl list-unit-files'.\n", + on, n_shown, off); + } + + return 0; +} + +static int get_unit_list( + sd_bus *bus, + const char *machine, + char **patterns, + UnitInfo **unit_infos, + int c, + sd_bus_message **_reply) { + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + size_t size = c; + int r; + UnitInfo u; + bool fallback = false; + + assert(bus); + assert(unit_infos); + assert(_reply); + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ListUnitsByPatterns"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, arg_states); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, patterns); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0 && (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD) || + sd_bus_error_has_name(&error, SD_BUS_ERROR_ACCESS_DENIED))) { + /* Fallback to legacy ListUnitsFiltered method */ + fallback = true; + log_debug_errno(r, "Failed to list units: %s Falling back to ListUnitsFiltered method.", bus_error_message(&error, r)); + m = sd_bus_message_unref(m); + sd_bus_error_free(&error); + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ListUnitsFiltered"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, arg_states); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + } + if (r < 0) + return log_error_errno(r, "Failed to list units: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = bus_parse_unit_info(reply, &u)) > 0) { + u.machine = machine; + + if (!output_show_unit(&u, fallback ? patterns : NULL)) + continue; + + if (!GREEDY_REALLOC(*unit_infos, size, c+1)) + return log_oom(); + + (*unit_infos)[c++] = u; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + *_reply = reply; + reply = NULL; + + return c; +} + +static void message_set_freep(Set **set) { + sd_bus_message *m; + + while ((m = set_steal_first(*set))) + sd_bus_message_unref(m); + + set_free(*set); +} + +static int get_unit_list_recursive( + sd_bus *bus, + char **patterns, + UnitInfo **_unit_infos, + Set **_replies, + char ***_machines) { + + _cleanup_free_ UnitInfo *unit_infos = NULL; + _cleanup_(message_set_freep) Set *replies; + sd_bus_message *reply; + int c, r; + + assert(bus); + assert(_replies); + assert(_unit_infos); + assert(_machines); + + replies = set_new(NULL); + if (!replies) + return log_oom(); + + c = get_unit_list(bus, NULL, patterns, &unit_infos, 0, &reply); + if (c < 0) + return c; + + r = set_put(replies, reply); + if (r < 0) { + sd_bus_message_unref(reply); + return log_oom(); + } + + if (arg_recursive) { + _cleanup_strv_free_ char **machines = NULL; + char **i; + + r = sd_get_machine_names(&machines); + if (r < 0) + return log_error_errno(r, "Failed to get machine names: %m"); + + STRV_FOREACH(i, machines) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *container = NULL; + int k; + + r = sd_bus_open_system_machine(&container, *i); + if (r < 0) { + log_warning_errno(r, "Failed to connect to container %s, ignoring: %m", *i); + continue; + } + + k = get_unit_list(container, *i, patterns, &unit_infos, c, &reply); + if (k < 0) + return k; + + c = k; + + r = set_put(replies, reply); + if (r < 0) { + sd_bus_message_unref(reply); + return log_oom(); + } + } + + *_machines = machines; + machines = NULL; + } else + *_machines = NULL; + + *_unit_infos = unit_infos; + unit_infos = NULL; + + *_replies = replies; + replies = NULL; + + return c; +} + +static int list_units(int argc, char *argv[], void *userdata) { + _cleanup_free_ UnitInfo *unit_infos = NULL; + _cleanup_(message_set_freep) Set *replies = NULL; + _cleanup_strv_free_ char **machines = NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + pager_open(arg_no_pager, false); + + r = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines); + if (r < 0) + return r; + + qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info); + return output_units_list(unit_infos, r); +} + +static int get_triggered_units( + sd_bus *bus, + const char* path, + char*** ret) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r; + + assert(bus); + assert(path); + assert(ret); + + r = sd_bus_get_property_strv( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "Triggers", + &error, + ret); + if (r < 0) + return log_error_errno(r, "Failed to determine triggers: %s", bus_error_message(&error, r)); + + return 0; +} + +static int get_listening( + sd_bus *bus, + const char* unit_path, + char*** listening) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *type, *path; + int r, n = 0; + + r = sd_bus_get_property( + bus, + "org.freedesktop.systemd1", + unit_path, + "org.freedesktop.systemd1.Socket", + "Listen", + &error, + &reply, + "a(ss)"); + if (r < 0) + return log_error_errno(r, "Failed to get list of listening sockets: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) { + + r = strv_extend(listening, type); + if (r < 0) + return log_oom(); + + r = strv_extend(listening, path); + if (r < 0) + return log_oom(); + + n++; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return n; +} + +struct socket_info { + const char *machine; + const char* id; + + char* type; + char* path; + + /* Note: triggered is a list here, although it almost certainly + * will always be one unit. Nevertheless, dbus API allows for multiple + * values, so let's follow that. */ + char** triggered; + + /* The strv above is shared. free is set only in the first one. */ + bool own_triggered; +}; + +static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) { + int o; + + assert(a); + assert(b); + + if (!a->machine && b->machine) + return -1; + if (a->machine && !b->machine) + return 1; + if (a->machine && b->machine) { + o = strcasecmp(a->machine, b->machine); + if (o != 0) + return o; + } + + o = strcmp(a->path, b->path); + if (o == 0) + o = strcmp(a->type, b->type); + + return o; +} + +static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) { + struct socket_info *s; + unsigned pathlen = strlen("LISTEN"), + typelen = strlen("TYPE") * arg_show_types, + socklen = strlen("UNIT"), + servlen = strlen("ACTIVATES"); + const char *on, *off; + + for (s = socket_infos; s < socket_infos + cs; s++) { + unsigned tmp = 0; + char **a; + + socklen = MAX(socklen, strlen(s->id)); + if (arg_show_types) + typelen = MAX(typelen, strlen(s->type)); + pathlen = MAX(pathlen, strlen(s->path) + (s->machine ? strlen(s->machine)+1 : 0)); + + STRV_FOREACH(a, s->triggered) + tmp += strlen(*a) + 2*(a != s->triggered); + servlen = MAX(servlen, tmp); + } + + if (cs) { + if (!arg_no_legend) + printf("%-*s %-*.*s%-*s %s\n", + pathlen, "LISTEN", + typelen + arg_show_types, typelen + arg_show_types, "TYPE ", + socklen, "UNIT", + "ACTIVATES"); + + for (s = socket_infos; s < socket_infos + cs; s++) { + _cleanup_free_ char *j = NULL; + const char *path; + char **a; + + if (s->machine) { + j = strjoin(s->machine, ":", s->path, NULL); + if (!j) + return log_oom(); + path = j; + } else + path = s->path; + + if (arg_show_types) + printf("%-*s %-*s %-*s", + pathlen, path, typelen, s->type, socklen, s->id); + else + printf("%-*s %-*s", + pathlen, path, socklen, s->id); + STRV_FOREACH(a, s->triggered) + printf("%s %s", + a == s->triggered ? "" : ",", *a); + printf("\n"); + } + + on = ansi_highlight(); + off = ansi_normal(); + if (!arg_no_legend) + printf("\n"); + } else { + on = ansi_highlight_red(); + off = ansi_normal(); + } + + if (!arg_no_legend) { + printf("%s%u sockets listed.%s\n", on, cs, off); + if (!arg_all) + printf("Pass --all to see loaded but inactive sockets, too.\n"); + } + + return 0; +} + +static int list_sockets(int argc, char *argv[], void *userdata) { + _cleanup_(message_set_freep) Set *replies = NULL; + _cleanup_strv_free_ char **machines = NULL; + _cleanup_free_ UnitInfo *unit_infos = NULL; + _cleanup_free_ struct socket_info *socket_infos = NULL; + const UnitInfo *u; + struct socket_info *s; + unsigned cs = 0; + size_t size = 0; + int r = 0, n; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + pager_open(arg_no_pager, false); + + n = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines); + if (n < 0) + return n; + + for (u = unit_infos; u < unit_infos + n; u++) { + _cleanup_strv_free_ char **listening = NULL, **triggered = NULL; + int i, c; + + if (!endswith(u->id, ".socket")) + continue; + + r = get_triggered_units(bus, u->unit_path, &triggered); + if (r < 0) + goto cleanup; + + c = get_listening(bus, u->unit_path, &listening); + if (c < 0) { + r = c; + goto cleanup; + } + + if (!GREEDY_REALLOC(socket_infos, size, cs + c)) { + r = log_oom(); + goto cleanup; + } + + for (i = 0; i < c; i++) + socket_infos[cs + i] = (struct socket_info) { + .machine = u->machine, + .id = u->id, + .type = listening[i*2], + .path = listening[i*2 + 1], + .triggered = triggered, + .own_triggered = i==0, + }; + + /* from this point on we will cleanup those socket_infos */ + cs += c; + free(listening); + listening = triggered = NULL; /* avoid cleanup */ + } + + qsort_safe(socket_infos, cs, sizeof(struct socket_info), + (__compar_fn_t) socket_info_compare); + + output_sockets_list(socket_infos, cs); + + cleanup: + assert(cs == 0 || socket_infos); + for (s = socket_infos; s < socket_infos + cs; s++) { + free(s->type); + free(s->path); + if (s->own_triggered) + strv_free(s->triggered); + } + + return r; +} + +static int get_next_elapse( + sd_bus *bus, + const char *path, + dual_timestamp *next) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + dual_timestamp t; + int r; + + assert(bus); + assert(path); + assert(next); + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Timer", + "NextElapseUSecMonotonic", + &error, + 't', + &t.monotonic); + if (r < 0) + return log_error_errno(r, "Failed to get next elapsation time: %s", bus_error_message(&error, r)); + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Timer", + "NextElapseUSecRealtime", + &error, + 't', + &t.realtime); + if (r < 0) + return log_error_errno(r, "Failed to get next elapsation time: %s", bus_error_message(&error, r)); + + *next = t; + return 0; +} + +static int get_last_trigger( + sd_bus *bus, + const char *path, + usec_t *last) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int r; + + assert(bus); + assert(path); + assert(last); + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Timer", + "LastTriggerUSec", + &error, + 't', + last); + if (r < 0) + return log_error_errno(r, "Failed to get last trigger time: %s", bus_error_message(&error, r)); + + return 0; +} + +struct timer_info { + const char* machine; + const char* id; + usec_t next_elapse; + usec_t last_trigger; + char** triggered; +}; + +static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) { + int o; + + assert(a); + assert(b); + + if (!a->machine && b->machine) + return -1; + if (a->machine && !b->machine) + return 1; + if (a->machine && b->machine) { + o = strcasecmp(a->machine, b->machine); + if (o != 0) + return o; + } + + if (a->next_elapse < b->next_elapse) + return -1; + if (a->next_elapse > b->next_elapse) + return 1; + + return strcmp(a->id, b->id); +} + +static int output_timers_list(struct timer_info *timer_infos, unsigned n) { + struct timer_info *t; + unsigned + nextlen = strlen("NEXT"), + leftlen = strlen("LEFT"), + lastlen = strlen("LAST"), + passedlen = strlen("PASSED"), + unitlen = strlen("UNIT"), + activatelen = strlen("ACTIVATES"); + + const char *on, *off; + + assert(timer_infos || n == 0); + + for (t = timer_infos; t < timer_infos + n; t++) { + unsigned ul = 0; + char **a; + + if (t->next_elapse > 0) { + char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = ""; + + format_timestamp(tstamp, sizeof(tstamp), t->next_elapse); + nextlen = MAX(nextlen, strlen(tstamp) + 1); + + format_timestamp_relative(trel, sizeof(trel), t->next_elapse); + leftlen = MAX(leftlen, strlen(trel)); + } + + if (t->last_trigger > 0) { + char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = ""; + + format_timestamp(tstamp, sizeof(tstamp), t->last_trigger); + lastlen = MAX(lastlen, strlen(tstamp) + 1); + + format_timestamp_relative(trel, sizeof(trel), t->last_trigger); + passedlen = MAX(passedlen, strlen(trel)); + } + + unitlen = MAX(unitlen, strlen(t->id) + (t->machine ? strlen(t->machine)+1 : 0)); + + STRV_FOREACH(a, t->triggered) + ul += strlen(*a) + 2*(a != t->triggered); + + activatelen = MAX(activatelen, ul); + } + + if (n > 0) { + if (!arg_no_legend) + printf("%-*s %-*s %-*s %-*s %-*s %s\n", + nextlen, "NEXT", + leftlen, "LEFT", + lastlen, "LAST", + passedlen, "PASSED", + unitlen, "UNIT", + "ACTIVATES"); + + for (t = timer_infos; t < timer_infos + n; t++) { + _cleanup_free_ char *j = NULL; + const char *unit; + char tstamp1[FORMAT_TIMESTAMP_MAX] = "n/a", trel1[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a"; + char tstamp2[FORMAT_TIMESTAMP_MAX] = "n/a", trel2[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a"; + char **a; + + format_timestamp(tstamp1, sizeof(tstamp1), t->next_elapse); + format_timestamp_relative(trel1, sizeof(trel1), t->next_elapse); + + format_timestamp(tstamp2, sizeof(tstamp2), t->last_trigger); + format_timestamp_relative(trel2, sizeof(trel2), t->last_trigger); + + if (t->machine) { + j = strjoin(t->machine, ":", t->id, NULL); + if (!j) + return log_oom(); + unit = j; + } else + unit = t->id; + + printf("%-*s %-*s %-*s %-*s %-*s", + nextlen, tstamp1, leftlen, trel1, lastlen, tstamp2, passedlen, trel2, unitlen, unit); + + STRV_FOREACH(a, t->triggered) + printf("%s %s", + a == t->triggered ? "" : ",", *a); + printf("\n"); + } + + on = ansi_highlight(); + off = ansi_normal(); + if (!arg_no_legend) + printf("\n"); + } else { + on = ansi_highlight_red(); + off = ansi_normal(); + } + + if (!arg_no_legend) { + printf("%s%u timers listed.%s\n", on, n, off); + if (!arg_all) + printf("Pass --all to see loaded but inactive timers, too.\n"); + } + + return 0; +} + +static usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) { + usec_t next_elapse; + + assert(nw); + assert(next); + + if (next->monotonic != USEC_INFINITY && next->monotonic > 0) { + usec_t converted; + + if (next->monotonic > nw->monotonic) + converted = nw->realtime + (next->monotonic - nw->monotonic); + else + converted = nw->realtime - (nw->monotonic - next->monotonic); + + if (next->realtime != USEC_INFINITY && next->realtime > 0) + next_elapse = MIN(converted, next->realtime); + else + next_elapse = converted; + + } else + next_elapse = next->realtime; + + return next_elapse; +} + +static int list_timers(int argc, char *argv[], void *userdata) { + _cleanup_(message_set_freep) Set *replies = NULL; + _cleanup_strv_free_ char **machines = NULL; + _cleanup_free_ struct timer_info *timer_infos = NULL; + _cleanup_free_ UnitInfo *unit_infos = NULL; + struct timer_info *t; + const UnitInfo *u; + size_t size = 0; + int n, c = 0; + dual_timestamp nw; + sd_bus *bus; + int r = 0; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + pager_open(arg_no_pager, false); + + n = get_unit_list_recursive(bus, strv_skip(argv, 1), &unit_infos, &replies, &machines); + if (n < 0) + return n; + + dual_timestamp_get(&nw); + + for (u = unit_infos; u < unit_infos + n; u++) { + _cleanup_strv_free_ char **triggered = NULL; + dual_timestamp next = DUAL_TIMESTAMP_NULL; + usec_t m, last = 0; + + if (!endswith(u->id, ".timer")) + continue; + + r = get_triggered_units(bus, u->unit_path, &triggered); + if (r < 0) + goto cleanup; + + r = get_next_elapse(bus, u->unit_path, &next); + if (r < 0) + goto cleanup; + + get_last_trigger(bus, u->unit_path, &last); + + if (!GREEDY_REALLOC(timer_infos, size, c+1)) { + r = log_oom(); + goto cleanup; + } + + m = calc_next_elapse(&nw, &next); + + timer_infos[c++] = (struct timer_info) { + .machine = u->machine, + .id = u->id, + .next_elapse = m, + .last_trigger = last, + .triggered = triggered, + }; + + triggered = NULL; /* avoid cleanup */ + } + + qsort_safe(timer_infos, c, sizeof(struct timer_info), + (__compar_fn_t) timer_info_compare); + + output_timers_list(timer_infos, c); + + cleanup: + for (t = timer_infos; t < timer_infos + c; t++) + strv_free(t->triggered); + + return r; +} + +static int compare_unit_file_list(const void *a, const void *b) { + const char *d1, *d2; + const UnitFileList *u = a, *v = b; + + d1 = strrchr(u->path, '.'); + d2 = strrchr(v->path, '.'); + + if (d1 && d2) { + int r; + + r = strcasecmp(d1, d2); + if (r != 0) + return r; + } + + return strcasecmp(basename(u->path), basename(v->path)); +} + +static bool output_show_unit_file(const UnitFileList *u, char **states, char **patterns) { + assert(u); + + if (!strv_fnmatch_or_empty(patterns, basename(u->path), FNM_NOESCAPE)) + return false; + + if (!strv_isempty(arg_types)) { + const char *dot; + + dot = strrchr(u->path, '.'); + if (!dot) + return false; + + if (!strv_find(arg_types, dot+1)) + return false; + } + + if (!strv_isempty(states) && + !strv_find(states, unit_file_state_to_string(u->state))) + return false; + + return true; +} + +static void output_unit_file_list(const UnitFileList *units, unsigned c) { + unsigned max_id_len, id_cols, state_cols; + const UnitFileList *u; + + max_id_len = strlen("UNIT FILE"); + state_cols = strlen("STATE"); + + for (u = units; u < units + c; u++) { + max_id_len = MAX(max_id_len, strlen(basename(u->path))); + state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state))); + } + + if (!arg_full) { + unsigned basic_cols; + + id_cols = MIN(max_id_len, 25u); + basic_cols = 1 + id_cols + state_cols; + if (basic_cols < (unsigned) columns()) + id_cols += MIN(columns() - basic_cols, max_id_len - id_cols); + } else + id_cols = max_id_len; + + if (!arg_no_legend && c > 0) + printf("%s%-*s %-*s%s\n", + ansi_underline(), + id_cols, "UNIT FILE", + state_cols, "STATE", + ansi_normal()); + + for (u = units; u < units + c; u++) { + _cleanup_free_ char *e = NULL; + const char *on, *off, *on_underline = "", *off_underline = ""; + const char *id; + bool underline = false; + + if (u + 1 < units + c && + !streq(unit_type_suffix(u->path), unit_type_suffix((u + 1)->path))) { + on_underline = ansi_underline(); + off_underline = ansi_normal(); + underline = true; + } + + if (IN_SET(u->state, + UNIT_FILE_MASKED, + UNIT_FILE_MASKED_RUNTIME, + UNIT_FILE_DISABLED, + UNIT_FILE_BAD)) + on = underline ? ansi_highlight_red_underline() : ansi_highlight_red(); + else if (u->state == UNIT_FILE_ENABLED) + on = underline ? ansi_highlight_green_underline() : ansi_highlight_green(); + else + on = on_underline; + off = off_underline; + + id = basename(u->path); + + e = arg_full ? NULL : ellipsize(id, id_cols, 33); + + printf("%s%-*s %s%-*s%s%s\n", + on_underline, + id_cols, e ? e : id, + on, state_cols, unit_file_state_to_string(u->state), off, + off_underline); + } + + if (!arg_no_legend) + printf("\n%u unit files listed.\n", c); +} + +static int list_unit_files(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ UnitFileList *units = NULL; + UnitFileList *unit; + size_t size = 0; + unsigned c = 0; + const char *state; + char *path; + int r; + bool fallback = false; + + if (install_client_side()) { + Hashmap *h; + UnitFileList *u; + Iterator i; + unsigned n_units; + + h = hashmap_new(&string_hash_ops); + if (!h) + return log_oom(); + + r = unit_file_get_list(arg_scope, arg_root, h, arg_states, strv_skip(argv, 1)); + if (r < 0) { + unit_file_list_free(h); + return log_error_errno(r, "Failed to get unit file list: %m"); + } + + n_units = hashmap_size(h); + + units = new(UnitFileList, n_units ?: 1); /* avoid malloc(0) */ + if (!units) { + unit_file_list_free(h); + return log_oom(); + } + + HASHMAP_FOREACH(u, h, i) { + if (!output_show_unit_file(u, NULL, NULL)) + continue; + + units[c++] = *u; + free(u); + } + + assert(c <= n_units); + hashmap_free(h); + + r = 0; + } else { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ListUnitFilesByPatterns"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, arg_states); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, strv_skip(argv, 1)); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0 && sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_METHOD)) { + /* Fallback to legacy ListUnitFiles method */ + fallback = true; + log_debug_errno(r, "Failed to list unit files: %s Falling back to ListUnitsFiles method.", bus_error_message(&error, r)); + m = sd_bus_message_unref(m); + sd_bus_error_free(&error); + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ListUnitFiles"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + } + if (r < 0) + return log_error_errno(r, "Failed to list unit files: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) { + + if (!GREEDY_REALLOC(units, size, c + 1)) + return log_oom(); + + units[c] = (struct UnitFileList) { + path, + unit_file_state_from_string(state) + }; + + if (output_show_unit_file(&units[c], + fallback ? arg_states : NULL, + fallback ? strv_skip(argv, 1) : NULL)) + c++; + + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + } + + pager_open(arg_no_pager, false); + + qsort_safe(units, c, sizeof(UnitFileList), compare_unit_file_list); + output_unit_file_list(units, c); + + if (install_client_side()) + for (unit = units; unit < units + c; unit++) + free(unit->path); + + return 0; +} + +static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) { + _cleanup_free_ char *n = NULL; + size_t max_len = MAX(columns(),20u); + size_t len = 0; + int i; + + if (!arg_plain) { + + for (i = level - 1; i >= 0; i--) { + len += 2; + if (len > max_len - 3 && !arg_full) { + printf("%s...\n",max_len % 2 ? "" : " "); + return 0; + } + printf("%s", special_glyph(branches & (1 << i) ? TREE_VERTICAL : TREE_SPACE)); + } + len += 2; + + if (len > max_len - 3 && !arg_full) { + printf("%s...\n",max_len % 2 ? "" : " "); + return 0; + } + + printf("%s", special_glyph(last ? TREE_RIGHT : TREE_BRANCH)); + } + + if (arg_full) { + printf("%s\n", name); + return 0; + } + + n = ellipsize(name, max_len-len, 100); + if (!n) + return log_oom(); + + printf("%s\n", n); + return 0; +} + +static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) { + + static const char *dependencies[_DEPENDENCY_MAX] = { + [DEPENDENCY_FORWARD] = "Requires\0" + "Requisite\0" + "Wants\0" + "ConsistsOf\0" + "BindsTo\0", + [DEPENDENCY_REVERSE] = "RequiredBy\0" + "RequisiteOf\0" + "WantedBy\0" + "PartOf\0" + "BoundBy\0", + [DEPENDENCY_AFTER] = "After\0", + [DEPENDENCY_BEFORE] = "Before\0", + }; + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_strv_free_ char **ret = NULL; + _cleanup_free_ char *path = NULL; + int r; + + assert(bus); + assert(name); + assert(deps); + assert_cc(ELEMENTSOF(dependencies) == _DEPENDENCY_MAX); + + path = unit_dbus_path_from_name(name); + if (!path) + return log_oom(); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.DBus.Properties", + "GetAll", + &error, + &reply, + "s", "org.freedesktop.systemd1.Unit"); + if (r < 0) + return log_error_errno(r, "Failed to get properties of %s: %s", name, bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { + const char *prop; + + r = sd_bus_message_read(reply, "s", &prop); + if (r < 0) + return bus_log_parse_error(r); + + if (!nulstr_contains(dependencies[arg_dependency], prop)) { + r = sd_bus_message_skip(reply, "v"); + if (r < 0) + return bus_log_parse_error(r); + } else { + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as"); + if (r < 0) + return bus_log_parse_error(r); + + r = bus_message_read_strv_extend(reply, &ret); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + } + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + *deps = ret; + ret = NULL; + + return 0; +} + +static int list_dependencies_compare(const void *_a, const void *_b) { + const char **a = (const char**) _a, **b = (const char**) _b; + + if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET) + return 1; + if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET) + return -1; + + return strcasecmp(*a, *b); +} + +static int list_dependencies_one( + sd_bus *bus, + const char *name, + int level, + char ***units, + unsigned int branches) { + + _cleanup_strv_free_ char **deps = NULL; + char **c; + int r = 0; + + assert(bus); + assert(name); + assert(units); + + r = strv_extend(units, name); + if (r < 0) + return log_oom(); + + r = list_dependencies_get_dependencies(bus, name, &deps); + if (r < 0) + return r; + + qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare); + + STRV_FOREACH(c, deps) { + if (strv_contains(*units, *c)) { + if (!arg_plain) { + r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1); + if (r < 0) + return r; + } + continue; + } + + if (arg_plain) + printf(" "); + else { + UnitActiveState active_state = _UNIT_ACTIVE_STATE_INVALID; + const char *on; + + (void) get_state_one_unit(bus, *c, &active_state); + + switch (active_state) { + case UNIT_ACTIVE: + case UNIT_RELOADING: + case UNIT_ACTIVATING: + on = ansi_highlight_green(); + break; + + case UNIT_INACTIVE: + case UNIT_DEACTIVATING: + on = ansi_normal(); + break; + + default: + on = ansi_highlight_red(); + break; + } + + printf("%s%s%s ", on, special_glyph(BLACK_CIRCLE), ansi_normal()); + } + + r = list_dependencies_print(*c, level, branches, c[1] == NULL); + if (r < 0) + return r; + + if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) { + r = list_dependencies_one(bus, *c, level + 1, units, (branches << 1) | (c[1] == NULL ? 0 : 1)); + if (r < 0) + return r; + } + } + + if (!arg_plain) + strv_remove(*units, name); + + return 0; +} + +static int list_dependencies(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **units = NULL; + _cleanup_free_ char *unit = NULL; + const char *u; + sd_bus *bus; + int r; + + if (argv[1]) { + r = unit_name_mangle(argv[1], UNIT_NAME_NOGLOB, &unit); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + u = unit; + } else + u = SPECIAL_DEFAULT_TARGET; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + pager_open(arg_no_pager, false); + + puts(u); + + return list_dependencies_one(bus, u, 0, &units, 0); +} + +struct machine_info { + bool is_host; + char *name; + char *state; + char *control_group; + uint32_t n_failed_units; + uint32_t n_jobs; + usec_t timestamp; +}; + +static const struct bus_properties_map machine_info_property_map[] = { + { "SystemState", "s", NULL, offsetof(struct machine_info, state) }, + { "NJobs", "u", NULL, offsetof(struct machine_info, n_jobs) }, + { "NFailedUnits", "u", NULL, offsetof(struct machine_info, n_failed_units) }, + { "ControlGroup", "s", NULL, offsetof(struct machine_info, control_group) }, + { "UserspaceTimestamp", "t", NULL, offsetof(struct machine_info, timestamp) }, + {} +}; + +static void machine_info_clear(struct machine_info *info) { + assert(info); + + free(info->name); + free(info->state); + free(info->control_group); + zero(*info); +} + +static void free_machines_list(struct machine_info *machine_infos, int n) { + int i; + + if (!machine_infos) + return; + + for (i = 0; i < n; i++) + machine_info_clear(&machine_infos[i]); + + free(machine_infos); +} + +static int compare_machine_info(const void *a, const void *b) { + const struct machine_info *u = a, *v = b; + + if (u->is_host != v->is_host) + return u->is_host > v->is_host ? -1 : 1; + + return strcasecmp(u->name, v->name); +} + +static int get_machine_properties(sd_bus *bus, struct machine_info *mi) { + _cleanup_(sd_bus_flush_close_unrefp) sd_bus *container = NULL; + int r; + + assert(mi); + + if (!bus) { + r = sd_bus_open_system_machine(&container, mi->name); + if (r < 0) + return r; + + bus = container; + } + + r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, mi); + if (r < 0) + return r; + + return 0; +} + +static bool output_show_machine(const char *name, char **patterns) { + return strv_fnmatch_or_empty(patterns, name, FNM_NOESCAPE); +} + +static int get_machine_list( + sd_bus *bus, + struct machine_info **_machine_infos, + char **patterns) { + + struct machine_info *machine_infos = NULL; + _cleanup_strv_free_ char **m = NULL; + _cleanup_free_ char *hn = NULL; + size_t sz = 0; + char **i; + int c = 0, r; + + hn = gethostname_malloc(); + if (!hn) + return log_oom(); + + if (output_show_machine(hn, patterns)) { + if (!GREEDY_REALLOC0(machine_infos, sz, c+1)) + return log_oom(); + + machine_infos[c].is_host = true; + machine_infos[c].name = hn; + hn = NULL; + + get_machine_properties(bus, &machine_infos[c]); + c++; + } + + r = sd_get_machine_names(&m); + if (r < 0) + return log_error_errno(r, "Failed to get machine list: %m"); + + STRV_FOREACH(i, m) { + _cleanup_free_ char *class = NULL; + + if (!output_show_machine(*i, patterns)) + continue; + + sd_machine_get_class(*i, &class); + if (!streq_ptr(class, "container")) + continue; + + if (!GREEDY_REALLOC0(machine_infos, sz, c+1)) { + free_machines_list(machine_infos, c); + return log_oom(); + } + + machine_infos[c].is_host = false; + machine_infos[c].name = strdup(*i); + if (!machine_infos[c].name) { + free_machines_list(machine_infos, c); + return log_oom(); + } + + get_machine_properties(NULL, &machine_infos[c]); + c++; + } + + *_machine_infos = machine_infos; + return c; +} + +static void output_machines_list(struct machine_info *machine_infos, unsigned n) { + struct machine_info *m; + unsigned + circle_len = 0, + namelen = sizeof("NAME") - 1, + statelen = sizeof("STATE") - 1, + failedlen = sizeof("FAILED") - 1, + jobslen = sizeof("JOBS") - 1; + + assert(machine_infos || n == 0); + + for (m = machine_infos; m < machine_infos + n; m++) { + namelen = MAX(namelen, strlen(m->name) + (m->is_host ? sizeof(" (host)") - 1 : 0)); + statelen = MAX(statelen, m->state ? strlen(m->state) : 0); + failedlen = MAX(failedlen, DECIMAL_STR_WIDTH(m->n_failed_units)); + jobslen = MAX(jobslen, DECIMAL_STR_WIDTH(m->n_jobs)); + + if (!arg_plain && !streq_ptr(m->state, "running")) + circle_len = 2; + } + + if (!arg_no_legend) { + if (circle_len > 0) + fputs(" ", stdout); + + printf("%-*s %-*s %-*s %-*s\n", + namelen, "NAME", + statelen, "STATE", + failedlen, "FAILED", + jobslen, "JOBS"); + } + + for (m = machine_infos; m < machine_infos + n; m++) { + const char *on_state = "", *off_state = ""; + const char *on_failed = "", *off_failed = ""; + bool circle = false; + + if (streq_ptr(m->state, "degraded")) { + on_state = ansi_highlight_red(); + off_state = ansi_normal(); + circle = true; + } else if (!streq_ptr(m->state, "running")) { + on_state = ansi_highlight_yellow(); + off_state = ansi_normal(); + circle = true; + } + + if (m->n_failed_units > 0) { + on_failed = ansi_highlight_red(); + off_failed = ansi_normal(); + } else + on_failed = off_failed = ""; + + if (circle_len > 0) + printf("%s%s%s ", on_state, circle ? special_glyph(BLACK_CIRCLE) : " ", off_state); + + if (m->is_host) + printf("%-*s (host) %s%-*s%s %s%*" PRIu32 "%s %*" PRIu32 "\n", + (int) (namelen - (sizeof(" (host)")-1)), strna(m->name), + on_state, statelen, strna(m->state), off_state, + on_failed, failedlen, m->n_failed_units, off_failed, + jobslen, m->n_jobs); + else + printf("%-*s %s%-*s%s %s%*" PRIu32 "%s %*" PRIu32 "\n", + namelen, strna(m->name), + on_state, statelen, strna(m->state), off_state, + on_failed, failedlen, m->n_failed_units, off_failed, + jobslen, m->n_jobs); + } + + if (!arg_no_legend) + printf("\n%u machines listed.\n", n); +} + +static int list_machines(int argc, char *argv[], void *userdata) { + struct machine_info *machine_infos = NULL; + sd_bus *bus; + int r; + + if (geteuid() != 0) { + log_error("Must be root."); + return -EPERM; + } + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = get_machine_list(bus, &machine_infos, strv_skip(argv, 1)); + if (r < 0) + return r; + + pager_open(arg_no_pager, false); + + qsort_safe(machine_infos, r, sizeof(struct machine_info), compare_machine_info); + output_machines_list(machine_infos, r); + free_machines_list(machine_infos, r); + + return 0; +} + +static int get_default(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ char *_path = NULL; + const char *path; + int r; + + if (install_client_side()) { + r = unit_file_get_default(arg_scope, arg_root, &_path); + if (r < 0) + return log_error_errno(r, "Failed to get default target: %m"); + path = _path; + + r = 0; + } else { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetDefaultTarget", + &error, + &reply, + NULL); + if (r < 0) + return log_error_errno(r, "Failed to get default target: %s", bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "s", &path); + if (r < 0) + return bus_log_parse_error(r); + } + + if (path) + printf("%s\n", path); + + return 0; +} + +static int set_default(int argc, char *argv[], void *userdata) { + _cleanup_free_ char *unit = NULL; + UnitFileChange *changes = NULL; + unsigned n_changes = 0; + int r; + + assert(argc >= 2); + assert(argv); + + r = unit_name_mangle_with_suffix(argv[1], UNIT_NAME_NOGLOB, ".target", &unit); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + if (install_client_side()) { + r = unit_file_set_default(arg_scope, UNIT_FILE_FORCE, arg_root, unit, &changes, &n_changes); + unit_file_dump_changes(r, "set default", changes, n_changes, arg_quiet); + + if (r > 0) + r = 0; + } else { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + sd_bus *bus; + + polkit_agent_open_if_enabled(); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "SetDefaultTarget", + &error, + &reply, + "sb", unit, 1); + if (r < 0) + return log_error_errno(r, "Failed to set default target: %s", bus_error_message(&error, r)); + + r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); + if (r < 0) + goto finish; + + /* Try to reload if enabled */ + if (!arg_no_reload) + r = daemon_reload(argc, argv, userdata); + else + r = 0; + } + +finish: + unit_file_changes_free(changes, n_changes); + + return r; +} + +struct job_info { + uint32_t id; + const char *name, *type, *state; +}; + +static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipped) { + unsigned id_len, unit_len, type_len, state_len; + const struct job_info *j; + const char *on, *off; + bool shorten = false; + + assert(n == 0 || jobs); + + if (n == 0) { + if (!arg_no_legend) { + on = ansi_highlight_green(); + off = ansi_normal(); + + printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off); + } + return; + } + + pager_open(arg_no_pager, false); + + id_len = strlen("JOB"); + unit_len = strlen("UNIT"); + type_len = strlen("TYPE"); + state_len = strlen("STATE"); + + for (j = jobs; j < jobs + n; j++) { + uint32_t id = j->id; + assert(j->name && j->type && j->state); + + id_len = MAX(id_len, DECIMAL_STR_WIDTH(id)); + unit_len = MAX(unit_len, strlen(j->name)); + type_len = MAX(type_len, strlen(j->type)); + state_len = MAX(state_len, strlen(j->state)); + } + + if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) { + unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3); + shorten = true; + } + + if (!arg_no_legend) + printf("%*s %-*s %-*s %-*s\n", + id_len, "JOB", + unit_len, "UNIT", + type_len, "TYPE", + state_len, "STATE"); + + for (j = jobs; j < jobs + n; j++) { + _cleanup_free_ char *e = NULL; + + if (streq(j->state, "running")) { + on = ansi_highlight(); + off = ansi_normal(); + } else + on = off = ""; + + e = shorten ? ellipsize(j->name, unit_len, 33) : NULL; + printf("%*u %s%-*s%s %-*s %s%-*s%s\n", + id_len, j->id, + on, unit_len, e ? e : j->name, off, + type_len, j->type, + on, state_len, j->state, off); + } + + if (!arg_no_legend) { + on = ansi_highlight(); + off = ansi_normal(); + + printf("\n%s%u jobs listed%s.\n", on, n, off); + } +} + +static bool output_show_job(struct job_info *job, char **patterns) { + return strv_fnmatch_or_empty(patterns, job->name, FNM_NOESCAPE); +} + +static int list_jobs(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *name, *type, *state, *job_path, *unit_path; + _cleanup_free_ struct job_info *jobs = NULL; + size_t size = 0; + unsigned c = 0; + sd_bus *bus; + uint32_t id; + int r; + bool skipped = false; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ListJobs", + &error, + &reply, + NULL); + if (r < 0) + return log_error_errno(r, "Failed to list jobs: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, 'a', "(usssoo)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) { + struct job_info job = { id, name, type, state }; + + if (!output_show_job(&job, strv_skip(argv, 1))) { + skipped = true; + continue; + } + + if (!GREEDY_REALLOC(jobs, size, c + 1)) + return log_oom(); + + jobs[c++] = job; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + pager_open(arg_no_pager, false); + + output_jobs_list(jobs, c, skipped); + return 0; +} + +static int cancel_job(int argc, char *argv[], void *userdata) { + sd_bus *bus; + char **name; + int r = 0; + + if (argc <= 1) + return trivial_method(argc, argv, userdata); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + STRV_FOREACH(name, strv_skip(argv, 1)) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + uint32_t id; + int q; + + q = safe_atou32(*name, &id); + if (q < 0) + return log_error_errno(q, "Failed to parse job id \"%s\": %m", *name); + + q = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "CancelJob", + &error, + NULL, + "u", id); + if (q < 0) { + log_error_errno(q, "Failed to cancel job %"PRIu32": %s", id, bus_error_message(&error, q)); + if (r == 0) + r = q; + } + } + + return r; +} + +static int need_daemon_reload(sd_bus *bus, const char *unit) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *path; + int b, r; + + /* We ignore all errors here, since this is used to show a + * warning only */ + + /* We don't use unit_dbus_path_from_name() directly since we + * don't want to load the unit if it isn't loaded. */ + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnit", + NULL, + &reply, + "s", unit); + if (r < 0) + return r; + + r = sd_bus_message_read(reply, "o", &path); + if (r < 0) + return r; + + r = sd_bus_get_property_trivial( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "NeedDaemonReload", + NULL, + 'b', &b); + if (r < 0) + return r; + + return b; +} + +static void warn_unit_file_changed(const char *name) { + assert(name); + + log_warning("%sWarning:%s %s changed on disk. Run 'systemctl%s daemon-reload' to reload units.", + ansi_highlight_red(), + ansi_normal(), + name, + arg_scope == UNIT_FILE_SYSTEM ? "" : " --user"); +} + +static int unit_file_find_path(LookupPaths *lp, const char *unit_name, char **unit_path) { + char **p; + + assert(lp); + assert(unit_name); + assert(unit_path); + + STRV_FOREACH(p, lp->search_path) { + _cleanup_free_ char *path; + + path = path_join(arg_root, *p, unit_name); + if (!path) + return log_oom(); + + if (access(path, F_OK) == 0) { + *unit_path = path; + path = NULL; + return 1; + } + } + + return 0; +} + +static int unit_find_paths( + sd_bus *bus, + const char *unit_name, + LookupPaths *lp, + char **fragment_path, + char ***dropin_paths) { + + _cleanup_free_ char *path = NULL; + _cleanup_strv_free_ char **dropins = NULL; + int r; + + /** + * Finds where the unit is defined on disk. Returns 0 if the unit + * is not found. Returns 1 if it is found, and sets + * - the path to the unit in *path, if it exists on disk, + * - and a strv of existing drop-ins in *dropins, + * if the arg is not NULL and any dropins were found. + */ + + assert(unit_name); + assert(fragment_path); + assert(lp); + + if (!install_client_side() && !unit_name_is_valid(unit_name, UNIT_NAME_TEMPLATE)) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *unit = NULL; + + unit = unit_dbus_path_from_name(unit_name); + if (!unit) + return log_oom(); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + unit, + "org.freedesktop.systemd1.Unit", + "FragmentPath", + &error, + &path); + if (r < 0) + return log_error_errno(r, "Failed to get FragmentPath: %s", bus_error_message(&error, r)); + + if (dropin_paths) { + r = sd_bus_get_property_strv( + bus, + "org.freedesktop.systemd1", + unit, + "org.freedesktop.systemd1.Unit", + "DropInPaths", + &error, + &dropins); + if (r < 0) + return log_error_errno(r, "Failed to get DropInPaths: %s", bus_error_message(&error, r)); + } + } else { + _cleanup_set_free_ Set *names; + + names = set_new(NULL); + if (!names) + return log_oom(); + + r = set_put(names, unit_name); + if (r < 0) + return log_error_errno(r, "Failed to add unit name: %m"); + + r = unit_file_find_path(lp, unit_name, &path); + if (r < 0) + return r; + + if (r == 0) { + _cleanup_free_ char *template = NULL; + + r = unit_name_template(unit_name, &template); + if (r < 0 && r != -EINVAL) + return log_error_errno(r, "Failed to determine template name: %m"); + if (r >= 0) { + r = unit_file_find_path(lp, template, &path); + if (r < 0) + return r; + } + } + + if (dropin_paths) { + r = unit_file_find_dropin_paths(lp->search_path, NULL, names, &dropins); + if (r < 0) + return r; + } + } + + r = 0; + + if (!isempty(path)) { + *fragment_path = path; + path = NULL; + r = 1; + } + + if (dropin_paths && !strv_isempty(dropins)) { + *dropin_paths = dropins; + dropins = NULL; + r = 1; + } + + if (r == 0 && !arg_force) + log_error("No files found for %s.", unit_name); + + return r; +} + +static int get_state_one_unit(sd_bus *bus, const char *name, UnitActiveState *active_state) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ char *buf = NULL; + UnitActiveState state; + const char *path; + int r; + + assert(name); + assert(active_state); + + /* We don't use unit_dbus_path_from_name() directly since we don't want to load the unit unnecessarily, if it + * isn't loaded. */ + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnit", + &error, + &reply, + "s", name); + if (r < 0) { + if (!sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT)) + return log_error_errno(r, "Failed to retrieve unit: %s", bus_error_message(&error, r)); + + /* The unit is currently not loaded, hence say it's "inactive", since all units that aren't loaded are + * considered inactive. */ + state = UNIT_INACTIVE; + + } else { + r = sd_bus_message_read(reply, "o", &path); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "ActiveState", + &error, + &buf); + if (r < 0) + return log_error_errno(r, "Failed to retrieve unit state: %s", bus_error_message(&error, r)); + + state = unit_active_state_from_string(buf); + if (state == _UNIT_ACTIVE_STATE_INVALID) { + log_error("Invalid unit state '%s' for: %s", buf, name); + return -EINVAL; + } + } + + *active_state = state; + return 0; +} + +static int check_triggering_units( + sd_bus *bus, + const char *name) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *path = NULL, *n = NULL, *load_state = NULL; + _cleanup_strv_free_ char **triggered_by = NULL; + bool print_warning_label = true; + UnitActiveState active_state; + char **i; + int r; + + r = unit_name_mangle(name, UNIT_NAME_NOGLOB, &n); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + path = unit_dbus_path_from_name(n); + if (!path) + return log_oom(); + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "LoadState", + &error, + &load_state); + if (r < 0) + return log_error_errno(r, "Failed to get load state of %s: %s", n, bus_error_message(&error, r)); + + if (streq(load_state, "masked")) + return 0; + + r = sd_bus_get_property_strv( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.systemd1.Unit", + "TriggeredBy", + &error, + &triggered_by); + if (r < 0) + return log_error_errno(r, "Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r)); + + STRV_FOREACH(i, triggered_by) { + r = get_state_one_unit(bus, *i, &active_state); + if (r < 0) + return r; + + if (!IN_SET(active_state, UNIT_ACTIVE, UNIT_RELOADING)) + continue; + + if (print_warning_label) { + log_warning("Warning: Stopping %s, but it can still be activated by:", n); + print_warning_label = false; + } + + log_warning(" %s", *i); + } + + return 0; +} + +static const struct { + const char *verb; + const char *method; +} unit_actions[] = { + { "start", "StartUnit" }, + { "stop", "StopUnit" }, + { "condstop", "StopUnit" }, + { "reload", "ReloadUnit" }, + { "restart", "RestartUnit" }, + { "try-restart", "TryRestartUnit" }, + { "condrestart", "TryRestartUnit" }, + { "reload-or-restart", "ReloadOrRestartUnit" }, + { "try-reload-or-restart", "ReloadOrTryRestartUnit" }, + { "reload-or-try-restart", "ReloadOrTryRestartUnit" }, + { "condreload", "ReloadOrTryRestartUnit" }, + { "force-reload", "ReloadOrTryRestartUnit" } +}; + +static const char *verb_to_method(const char *verb) { + uint i; + + for (i = 0; i < ELEMENTSOF(unit_actions); i++) + if (streq_ptr(unit_actions[i].verb, verb)) + return unit_actions[i].method; + + return "StartUnit"; +} + +static const char *method_to_verb(const char *method) { + uint i; + + for (i = 0; i < ELEMENTSOF(unit_actions); i++) + if (streq_ptr(unit_actions[i].method, method)) + return unit_actions[i].verb; + + return "n/a"; +} + +typedef struct { + sd_bus_slot *match; + sd_event *event; + Set *unit_paths; + bool any_failed; +} WaitContext; + +static void wait_context_free(WaitContext *c) { + c->match = sd_bus_slot_unref(c->match); + c->event = sd_event_unref(c->event); + c->unit_paths = set_free_free(c->unit_paths); +} + +static int on_properties_changed(sd_bus_message *m, void *userdata, sd_bus_error *error) { + WaitContext *c = userdata; + const char *path; + int r; + + path = sd_bus_message_get_path(m); + if (!set_contains(c->unit_paths, path)) + return 0; + + /* Check if ActiveState changed to inactive/failed */ + /* (s interface, a{sv} changed_properties, as invalidated_properties) */ + r = sd_bus_message_skip(m, "s"); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { + const char *s; + + r = sd_bus_message_read(m, "s", &s); + if (r < 0) + return bus_log_parse_error(r); + + if (streq(s, "ActiveState")) { + bool is_failed; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, "s"); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read(m, "s", &s); + if (r < 0) + return bus_log_parse_error(r); + + is_failed = streq(s, "failed"); + if (streq(s, "inactive") || is_failed) { + log_debug("%s became %s, dropping from --wait tracking", path, s); + free(set_remove(c->unit_paths, path)); + c->any_failed = c->any_failed || is_failed; + } else + log_debug("ActiveState on %s changed to %s", path, s); + + break; /* no need to dissect the rest of the message */ + } else { + /* other property */ + r = sd_bus_message_skip(m, "v"); + if (r < 0) + return bus_log_parse_error(r); + } + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + } + if (r < 0) + return bus_log_parse_error(r); + + if (set_isempty(c->unit_paths)) + sd_event_exit(c->event, EXIT_SUCCESS); + + return 0; +} + +static int start_unit_one( + sd_bus *bus, + const char *method, + const char *name, + const char *mode, + sd_bus_error *error, + BusWaitForJobs *w, + WaitContext *wait_context) { + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *path; + int r; + + assert(method); + assert(name); + assert(mode); + assert(error); + + if (wait_context) { + _cleanup_free_ char *unit_path = NULL; + const char* mt; + + log_debug("Watching for property changes of %s", name); + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "RefUnit", + error, + NULL, + "s", name); + if (r < 0) + return log_error_errno(r, "Failed to RefUnit %s: %s", name, bus_error_message(error, r)); + + unit_path = unit_dbus_path_from_name(name); + if (!unit_path) + return log_oom(); + + r = set_put_strdup(wait_context->unit_paths, unit_path); + if (r < 0) + return log_error_errno(r, "Failed to add unit path %s to set: %m", unit_path); + + mt = strjoina("type='signal'," + "interface='org.freedesktop.DBus.Properties'," + "path='", unit_path, "'," + "member='PropertiesChanged'"); + r = sd_bus_add_match(bus, &wait_context->match, mt, on_properties_changed, wait_context); + if (r < 0) + return log_error_errno(r, "Failed to add match for PropertiesChanged signal: %m"); + } + + log_debug("Calling manager for %s on %s, %s", method, name, mode); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + method, + error, + &reply, + "ss", name, mode); + if (r < 0) { + const char *verb; + + /* There's always a fallback possible for legacy actions. */ + if (arg_action != ACTION_SYSTEMCTL) + return r; + + verb = method_to_verb(method); + + log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r)); + + if (!sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) && + !sd_bus_error_has_name(error, BUS_ERROR_UNIT_MASKED)) + log_error("See %s logs and 'systemctl%s status%s %s' for details.", + arg_scope == UNIT_FILE_SYSTEM ? "system" : "user", + arg_scope == UNIT_FILE_SYSTEM ? "" : " --user", + name[0] == '-' ? " --" : "", + name); + + return r; + } + + r = sd_bus_message_read(reply, "o", &path); + if (r < 0) + return bus_log_parse_error(r); + + if (need_daemon_reload(bus, name) > 0) + warn_unit_file_changed(name); + + if (w) { + log_debug("Adding %s to the set", path); + r = bus_wait_for_jobs_add(w, path); + if (r < 0) + return log_oom(); + } + + return 0; +} + +static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) { + _cleanup_strv_free_ char **mangled = NULL, **globs = NULL; + char **name; + int r, i; + + assert(bus); + assert(ret); + + STRV_FOREACH(name, names) { + char *t; + + if (suffix) + r = unit_name_mangle_with_suffix(*name, UNIT_NAME_GLOB, suffix, &t); + else + r = unit_name_mangle(*name, UNIT_NAME_GLOB, &t); + if (r < 0) + return log_error_errno(r, "Failed to mangle name: %m"); + + if (string_is_glob(t)) + r = strv_consume(&globs, t); + else + r = strv_consume(&mangled, t); + if (r < 0) + return log_oom(); + } + + /* Query the manager only if any of the names are a glob, since + * this is fairly expensive */ + if (!strv_isempty(globs)) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ UnitInfo *unit_infos = NULL; + size_t allocated, n; + + r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply); + if (r < 0) + return r; + + n = strv_length(mangled); + allocated = n + 1; + + for (i = 0; i < r; i++) { + if (!GREEDY_REALLOC(mangled, allocated, n+2)) + return log_oom(); + + mangled[n] = strdup(unit_infos[i].id); + if (!mangled[n]) + return log_oom(); + + mangled[++n] = NULL; + } + } + + *ret = mangled; + mangled = NULL; /* do not free */ + + return 0; +} + +static const struct { + const char *target; + const char *verb; + const char *mode; +} action_table[_ACTION_MAX] = { + [ACTION_HALT] = { SPECIAL_HALT_TARGET, "halt", "replace-irreversibly" }, + [ACTION_POWEROFF] = { SPECIAL_POWEROFF_TARGET, "poweroff", "replace-irreversibly" }, + [ACTION_REBOOT] = { SPECIAL_REBOOT_TARGET, "reboot", "replace-irreversibly" }, + [ACTION_KEXEC] = { SPECIAL_KEXEC_TARGET, "kexec", "replace-irreversibly" }, + [ACTION_RUNLEVEL2] = { SPECIAL_MULTI_USER_TARGET, NULL, "isolate" }, + [ACTION_RUNLEVEL3] = { SPECIAL_MULTI_USER_TARGET, NULL, "isolate" }, + [ACTION_RUNLEVEL4] = { SPECIAL_MULTI_USER_TARGET, NULL, "isolate" }, + [ACTION_RUNLEVEL5] = { SPECIAL_GRAPHICAL_TARGET, NULL, "isolate" }, + [ACTION_RESCUE] = { SPECIAL_RESCUE_TARGET, "rescue", "isolate" }, + [ACTION_EMERGENCY] = { SPECIAL_EMERGENCY_TARGET, "emergency", "isolate" }, + [ACTION_DEFAULT] = { SPECIAL_DEFAULT_TARGET, "default", "isolate" }, + [ACTION_EXIT] = { SPECIAL_EXIT_TARGET, "exit", "replace-irreversibly" }, + [ACTION_SUSPEND] = { SPECIAL_SUSPEND_TARGET, "suspend", "replace-irreversibly" }, + [ACTION_HIBERNATE] = { SPECIAL_HIBERNATE_TARGET, "hibernate", "replace-irreversibly" }, + [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" }, +}; + +static enum action verb_to_action(const char *verb) { + enum action i; + + for (i = _ACTION_INVALID; i < _ACTION_MAX; i++) + if (streq_ptr(action_table[i].verb, verb)) + return i; + + return _ACTION_INVALID; +} + +static int start_unit(int argc, char *argv[], void *userdata) { + _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; + const char *method, *mode, *one_name, *suffix = NULL; + _cleanup_strv_free_ char **names = NULL; + sd_bus *bus; + _cleanup_(wait_context_free) WaitContext wait_context = {}; + char **name; + int r = 0; + + if (arg_wait && !strstr(argv[0], "start")) { + log_error("--wait may only be used with a command that starts units."); + return -EINVAL; + } + + /* we cannot do sender tracking on the private bus, so we need the full + * one for RefUnit to implement --wait */ + r = acquire_bus(arg_wait ? BUS_FULL : BUS_MANAGER, &bus); + if (r < 0) + return r; + + ask_password_agent_open_if_enabled(); + polkit_agent_open_if_enabled(); + + if (arg_action == ACTION_SYSTEMCTL) { + enum action action; + + method = verb_to_method(argv[0]); + action = verb_to_action(argv[0]); + + if (streq(argv[0], "isolate")) { + mode = "isolate"; + suffix = ".target"; + } else + mode = action_table[action].mode ?: arg_job_mode; + + one_name = action_table[action].target; + } else { + assert(arg_action < ELEMENTSOF(action_table)); + assert(action_table[arg_action].target); + + method = "StartUnit"; + + mode = action_table[arg_action].mode; + one_name = action_table[arg_action].target; + } + + if (one_name) + names = strv_new(one_name, NULL); + else { + r = expand_names(bus, strv_skip(argv, 1), suffix, &names); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + } + + 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_wait) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + + wait_context.unit_paths = set_new(&string_hash_ops); + if (!wait_context.unit_paths) + return log_oom(); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "Subscribe", + &error, + NULL, NULL); + if (r < 0) + return log_error_errno(r, "Failed to enable subscription: %s", bus_error_message(&error, r)); + r = sd_event_default(&wait_context.event); + if (r < 0) + return log_error_errno(r, "Failed to allocate event loop: %m"); + r = sd_bus_attach_event(bus, wait_context.event, 0); + if (r < 0) + return log_error_errno(r, "Failed to attach bus to event loop: %m"); + } + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + int q; + + q = start_unit_one(bus, method, *name, mode, &error, w, arg_wait ? &wait_context : NULL); + if (r >= 0 && q < 0) + r = translate_bus_error_to_exit_status(q, &error); + } + + if (!arg_no_block) { + int q, arg_count = 0; + const char* extra_args[4] = {}; + + if (arg_scope != UNIT_FILE_SYSTEM) + extra_args[arg_count++] = "--user"; + + assert(IN_SET(arg_transport, BUS_TRANSPORT_LOCAL, BUS_TRANSPORT_REMOTE, BUS_TRANSPORT_MACHINE)); + if (arg_transport == BUS_TRANSPORT_REMOTE) { + extra_args[arg_count++] = "-H"; + extra_args[arg_count++] = arg_host; + } else if (arg_transport == BUS_TRANSPORT_MACHINE) { + extra_args[arg_count++] = "-M"; + extra_args[arg_count++] = arg_host; + } + + q = bus_wait_for_jobs(w, arg_quiet, extra_args); + if (q < 0) + return q; + + /* When stopping units, warn if they can still be triggered by + * another active unit (socket, path, timer) */ + if (!arg_quiet && streq(method, "StopUnit")) + STRV_FOREACH(name, names) + check_triggering_units(bus, *name); + } + + if (r >= 0 && arg_wait) { + int q; + q = sd_event_loop(wait_context.event); + if (q < 0) + return log_error_errno(q, "Failed to run event loop: %m"); + if (wait_context.any_failed) + r = EXIT_FAILURE; + } + + return r; +} + +static int logind_set_wall_message(void) { +#ifdef HAVE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + _cleanup_free_ char *m = NULL; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + m = strv_join(arg_wall, " "); + if (!m) + return log_oom(); + + r = sd_bus_call_method( + bus, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "SetWallMessage", + &error, + NULL, + "sb", + m, + !arg_no_wall); + + if (r < 0) + return log_warning_errno(r, "Failed to set wall message, ignoring: %s", bus_error_message(&error, r)); + +#endif + return 0; +} + +/* Ask systemd-logind, which might grant access to unprivileged users + * through PolicyKit */ +static int logind_reboot(enum action a) { +#ifdef HAVE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + const char *method, *description; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + switch (a) { + + case ACTION_REBOOT: + method = "Reboot"; + description = "reboot system"; + break; + + case ACTION_POWEROFF: + method = "PowerOff"; + description = "power off system"; + break; + + case ACTION_SUSPEND: + method = "Suspend"; + description = "suspend system"; + break; + + case ACTION_HIBERNATE: + method = "Hibernate"; + description = "hibernate system"; + break; + + case ACTION_HYBRID_SLEEP: + method = "HybridSleep"; + description = "put system into hybrid sleep"; + break; + + default: + return -EINVAL; + } + + polkit_agent_open_if_enabled(); + (void) logind_set_wall_message(); + + r = sd_bus_call_method( + bus, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + method, + &error, + NULL, + "b", arg_ask_password); + if (r < 0) + return log_error_errno(r, "Failed to %s via logind: %s", description, bus_error_message(&error, r)); + + return 0; +#else + return -ENOSYS; +#endif +} + +static int logind_check_inhibitors(enum action a) { +#ifdef HAVE_LOGIND + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_strv_free_ char **sessions = NULL; + const char *what, *who, *why, *mode; + uint32_t uid, pid; + sd_bus *bus; + unsigned c = 0; + char **s; + int r; + + if (arg_ignore_inhibitors || arg_force > 0) + return 0; + + if (arg_when > 0) + return 0; + + if (geteuid() == 0) + return 0; + + if (!on_tty()) + return 0; + + if (arg_transport != BUS_TRANSPORT_LOCAL) + return 0; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "ListInhibitors", + NULL, + &reply, + NULL); + if (r < 0) + /* If logind is not around, then there are no inhibitors... */ + return 0; + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) { + _cleanup_free_ char *comm = NULL, *user = NULL; + _cleanup_strv_free_ char **sv = NULL; + + if (!streq(mode, "block")) + continue; + + sv = strv_split(what, ":"); + if (!sv) + return log_oom(); + + if ((pid_t) pid < 0) + return log_error_errno(ERANGE, "Bad PID %"PRIu32": %m", pid); + + if (!strv_contains(sv, + IN_SET(a, + ACTION_HALT, + ACTION_POWEROFF, + ACTION_REBOOT, + ACTION_KEXEC) ? "shutdown" : "sleep")) + continue; + + get_process_comm(pid, &comm); + user = uid_to_name(uid); + + log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".", + who, (pid_t) pid, strna(comm), strna(user), why); + + c++; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + /* Check for current sessions */ + sd_get_sessions(&sessions); + STRV_FOREACH(s, sessions) { + _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL; + + if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid()) + continue; + + if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user")) + continue; + + if (sd_session_get_type(*s, &type) < 0 || !STR_IN_SET(type, "x11", "tty")) + continue; + + sd_session_get_tty(*s, &tty); + sd_session_get_seat(*s, &seat); + sd_session_get_service(*s, &service); + user = uid_to_name(uid); + + log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty); + c++; + } + + if (c <= 0) + return 0; + + log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.", + action_table[a].verb); + + return -EPERM; +#else + return 0; +#endif +} + +static int logind_prepare_firmware_setup(void) { +#ifdef HAVE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "SetRebootToFirmwareSetup", + &error, + NULL, + "b", true); + if (r < 0) + return log_error_errno(r, "Cannot indicate to EFI to boot into setup mode: %s", bus_error_message(&error, r)); + + return 0; +#else + log_error("Cannot remotely indicate to EFI to boot into setup mode."); + return -ENOSYS; +#endif +} + +static int prepare_firmware_setup(void) { + int r; + + if (!arg_firmware_setup) + return 0; + + if (arg_transport == BUS_TRANSPORT_LOCAL) { + + r = efi_set_reboot_to_firmware(true); + if (r < 0) + log_debug_errno(r, "Cannot indicate to EFI to boot into setup mode, will retry via logind: %m"); + else + return r; + } + + return logind_prepare_firmware_setup(); +} + +static int set_exit_code(uint8_t code) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "SetExitCode", + &error, + NULL, + "y", code); + if (r < 0) + return log_error_errno(r, "Failed to set exit code: %s", bus_error_message(&error, r)); + + return 0; +} + +static int start_special(int argc, char *argv[], void *userdata) { + enum action a; + int r; + + assert(argv); + + a = verb_to_action(argv[0]); + + r = logind_check_inhibitors(a); + if (r < 0) + return r; + + if (arg_force >= 2 && geteuid() != 0) { + log_error("Must be root."); + return -EPERM; + } + + r = prepare_firmware_setup(); + if (r < 0) + return r; + + if (a == ACTION_REBOOT && argc > 1) { + r = update_reboot_parameter_and_warn(argv[1]); + if (r < 0) + return r; + + } else if (a == ACTION_EXIT && argc > 1) { + uint8_t code; + + /* If the exit code is not given on the command line, + * don't reset it to zero: just keep it as it might + * have been set previously. */ + + r = safe_atou8(argv[1], &code); + if (r < 0) + return log_error_errno(r, "Invalid exit code."); + + r = set_exit_code(code); + if (r < 0) + return r; + } + + if (arg_force >= 2 && + IN_SET(a, + ACTION_HALT, + ACTION_POWEROFF, + ACTION_REBOOT)) + return halt_now(a); + + if (arg_force >= 1 && + IN_SET(a, + ACTION_HALT, + ACTION_POWEROFF, + ACTION_REBOOT, + ACTION_KEXEC, + ACTION_EXIT)) + return trivial_method(argc, argv, userdata); + + /* First try logind, to allow authentication with polkit */ + if (IN_SET(a, + ACTION_POWEROFF, + ACTION_REBOOT, + ACTION_SUSPEND, + ACTION_HIBERNATE, + ACTION_HYBRID_SLEEP)) { + r = logind_reboot(a); + if (r >= 0) + return r; + if (IN_SET(r, -EOPNOTSUPP, -EINPROGRESS)) + /* requested operation is not supported or already in progress */ + return r; + + /* On all other errors, try low-level operation */ + } + + return start_unit(argc, argv, userdata); +} + +static int start_system_special(int argc, char *argv[], void *userdata) { + /* Like start_special above, but raises an error when running in user mode */ + + if (arg_scope != UNIT_FILE_SYSTEM) { + log_error("Bad action for %s mode.", + arg_scope == UNIT_FILE_GLOBAL ? "--global" : "--user"); + return -EINVAL; + } + + return start_special(argc, argv, userdata); +} + +static int check_unit_generic(int code, const UnitActiveState good_states[], int nb_states, char **args) { + _cleanup_strv_free_ char **names = NULL; + UnitActiveState active_state; + sd_bus *bus; + char **name; + int r, i; + bool found = false; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = expand_names(bus, args, NULL, &names); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + STRV_FOREACH(name, names) { + r = get_state_one_unit(bus, *name, &active_state); + if (r < 0) + return r; + + if (!arg_quiet) + puts(unit_active_state_to_string(active_state)); + + for (i = 0; i < nb_states; ++i) + if (good_states[i] == active_state) + found = true; + } + + /* use the given return code for the case that we won't find + * any unit which matches the list */ + return found ? 0 : code; +} + +static int check_unit_active(int argc, char *argv[], void *userdata) { + const UnitActiveState states[] = { UNIT_ACTIVE, UNIT_RELOADING }; + /* According to LSB: 3, "program is not running" */ + return check_unit_generic(EXIT_PROGRAM_NOT_RUNNING, states, ELEMENTSOF(states), strv_skip(argv, 1)); +} + +static int check_unit_failed(int argc, char *argv[], void *userdata) { + const UnitActiveState states[] = { UNIT_FAILED }; + return check_unit_generic(EXIT_PROGRAM_DEAD_AND_PID_EXISTS, states, ELEMENTSOF(states), strv_skip(argv, 1)); +} + +static int kill_unit(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + char *kill_who = NULL, **name; + sd_bus *bus; + int r, q; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + if (!arg_kill_who) + arg_kill_who = "all"; + + /* --fail was specified */ + if (streq(arg_job_mode, "fail")) + kill_who = strjoina(arg_kill_who, "-fail"); + + r = expand_names(bus, strv_skip(argv, 1), NULL, &names); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + + q = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "KillUnit", + &error, + NULL, + "ssi", *name, kill_who ? kill_who : arg_kill_who, arg_signal); + if (q < 0) { + log_error_errno(q, "Failed to kill unit %s: %s", *name, bus_error_message(&error, q)); + if (r == 0) + r = q; + } + } + + return r; +} + +typedef struct ExecStatusInfo { + char *name; + + char *path; + char **argv; + + bool ignore; + + usec_t start_timestamp; + usec_t exit_timestamp; + pid_t pid; + int code; + int status; + + LIST_FIELDS(struct ExecStatusInfo, exec); +} ExecStatusInfo; + +static void exec_status_info_free(ExecStatusInfo *i) { + assert(i); + + free(i->name); + free(i->path); + strv_free(i->argv); + free(i); +} + +static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) { + uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic; + const char *path; + uint32_t pid; + int32_t code, status; + int ignore, r; + + assert(m); + assert(i); + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii"); + if (r < 0) + return bus_log_parse_error(r); + else if (r == 0) + return 0; + + r = sd_bus_message_read(m, "s", &path); + if (r < 0) + return bus_log_parse_error(r); + + i->path = strdup(path); + if (!i->path) + return log_oom(); + + r = sd_bus_message_read_strv(m, &i->argv); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read(m, + "bttttuii", + &ignore, + &start_timestamp, &start_timestamp_monotonic, + &exit_timestamp, &exit_timestamp_monotonic, + &pid, + &code, &status); + if (r < 0) + return bus_log_parse_error(r); + + i->ignore = ignore; + i->start_timestamp = (usec_t) start_timestamp; + i->exit_timestamp = (usec_t) exit_timestamp; + i->pid = (pid_t) pid; + i->code = code; + i->status = status; + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 1; +} + +typedef struct UnitCondition { + char *name; + char *param; + bool trigger; + bool negate; + int tristate; + + LIST_FIELDS(struct UnitCondition, conditions); +} UnitCondition; + +static void unit_condition_free(UnitCondition *c) { + if (!c) + return; + + free(c->name); + free(c->param); + free(c); +} + +DEFINE_TRIVIAL_CLEANUP_FUNC(UnitCondition*, unit_condition_free); + +typedef struct UnitStatusInfo { + const char *id; + const char *load_state; + const char *active_state; + const char *sub_state; + const char *unit_file_state; + const char *unit_file_preset; + + const char *description; + const char *following; + + char **documentation; + + const char *fragment_path; + const char *source_path; + const char *control_group; + + char **dropin_paths; + + const char *load_error; + const char *result; + + usec_t inactive_exit_timestamp; + usec_t inactive_exit_timestamp_monotonic; + usec_t active_enter_timestamp; + usec_t active_exit_timestamp; + usec_t inactive_enter_timestamp; + + bool need_daemon_reload; + bool transient; + + /* Service */ + pid_t main_pid; + pid_t control_pid; + const char *status_text; + const char *pid_file; + bool running:1; + int status_errno; + + usec_t start_timestamp; + usec_t exit_timestamp; + + int exit_code, exit_status; + + usec_t condition_timestamp; + bool condition_result; + LIST_HEAD(UnitCondition, conditions); + + usec_t assert_timestamp; + bool assert_result; + bool failed_assert_trigger; + bool failed_assert_negate; + const char *failed_assert; + const char *failed_assert_parameter; + + /* Socket */ + unsigned n_accepted; + unsigned n_connections; + bool accept; + + /* Pairs of type, path */ + char **listen; + + /* Device */ + const char *sysfs_path; + + /* Mount, Automount */ + const char *where; + + /* Swap */ + const char *what; + + /* CGroup */ + uint64_t memory_current; + uint64_t memory_low; + uint64_t memory_high; + uint64_t memory_max; + uint64_t memory_swap_max; + uint64_t memory_limit; + uint64_t cpu_usage_nsec; + uint64_t tasks_current; + uint64_t tasks_max; + + LIST_HEAD(ExecStatusInfo, exec); +} UnitStatusInfo; + +static void unit_status_info_free(UnitStatusInfo *info) { + ExecStatusInfo *p; + UnitCondition *c; + + strv_free(info->documentation); + strv_free(info->dropin_paths); + strv_free(info->listen); + + while ((c = info->conditions)) { + LIST_REMOVE(conditions, info->conditions, c); + unit_condition_free(c); + } + + while ((p = info->exec)) { + LIST_REMOVE(exec, info->exec, p); + exec_status_info_free(p); + } +} + +static void print_status_info( + sd_bus *bus, + UnitStatusInfo *i, + bool *ellipsized) { + + ExecStatusInfo *p; + const char *active_on, *active_off, *on, *off, *ss; + usec_t timestamp; + char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1; + char since2[FORMAT_TIMESTAMP_MAX], *s2; + const char *path; + char **t, **t2; + int r; + + assert(i); + + /* This shows pretty information about a unit. See + * print_property() for a low-level property printer */ + + if (streq_ptr(i->active_state, "failed")) { + active_on = ansi_highlight_red(); + active_off = ansi_normal(); + } else if (STRPTR_IN_SET(i->active_state, "active", "reloading")) { + active_on = ansi_highlight_green(); + active_off = ansi_normal(); + } else + active_on = active_off = ""; + + printf("%s%s%s %s", active_on, special_glyph(BLACK_CIRCLE), active_off, strna(i->id)); + + if (i->description && !streq_ptr(i->id, i->description)) + printf(" - %s", i->description); + + printf("\n"); + + if (i->following) + printf(" Follow: unit currently follows state of %s\n", i->following); + + if (streq_ptr(i->load_state, "error")) { + on = ansi_highlight_red(); + off = ansi_normal(); + } else + on = off = ""; + + path = i->source_path ? i->source_path : i->fragment_path; + + if (i->load_error != 0) + printf(" Loaded: %s%s%s (Reason: %s)\n", + on, strna(i->load_state), off, i->load_error); + else if (path && !isempty(i->unit_file_state) && !isempty(i->unit_file_preset)) + printf(" Loaded: %s%s%s (%s; %s; vendor preset: %s)\n", + on, strna(i->load_state), off, path, i->unit_file_state, i->unit_file_preset); + else if (path && !isempty(i->unit_file_state)) + printf(" Loaded: %s%s%s (%s; %s)\n", + on, strna(i->load_state), off, path, i->unit_file_state); + else if (path) + printf(" Loaded: %s%s%s (%s)\n", + on, strna(i->load_state), off, path); + else + printf(" Loaded: %s%s%s\n", + on, strna(i->load_state), off); + + if (i->transient) + printf("Transient: yes\n"); + + if (!strv_isempty(i->dropin_paths)) { + _cleanup_free_ char *dir = NULL; + bool last = false; + char ** dropin; + + STRV_FOREACH(dropin, i->dropin_paths) { + if (! dir || last) { + printf(dir ? " " : " Drop-In: "); + + dir = mfree(dir); + + dir = dirname_malloc(*dropin); + if (!dir) { + log_oom(); + return; + } + + printf("%s\n %s", dir, + special_glyph(TREE_RIGHT)); + } + + last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir)); + + printf("%s%s", basename(*dropin), last ? "\n" : ", "); + } + } + + ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state; + if (ss) + printf(" Active: %s%s (%s)%s", + active_on, strna(i->active_state), ss, active_off); + else + printf(" Active: %s%s%s", + active_on, strna(i->active_state), active_off); + + if (!isempty(i->result) && !streq(i->result, "success")) + printf(" (Result: %s)", i->result); + + timestamp = STRPTR_IN_SET(i->active_state, "active", "reloading") ? i->active_enter_timestamp : + STRPTR_IN_SET(i->active_state, "inactive", "failed") ? i->inactive_enter_timestamp : + STRPTR_IN_SET(i->active_state, "activating") ? i->inactive_exit_timestamp : + i->active_exit_timestamp; + + s1 = format_timestamp_relative(since1, sizeof(since1), timestamp); + s2 = format_timestamp(since2, sizeof(since2), timestamp); + + if (s1) + printf(" since %s; %s\n", s2, s1); + else if (s2) + printf(" since %s\n", s2); + else + printf("\n"); + + if (!i->condition_result && i->condition_timestamp > 0) { + UnitCondition *c; + int n = 0; + + s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp); + s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp); + + printf("Condition: start %scondition failed%s at %s%s%s\n", + ansi_highlight_yellow(), ansi_normal(), + s2, s1 ? "; " : "", strempty(s1)); + + LIST_FOREACH(conditions, c, i->conditions) + if (c->tristate < 0) + n++; + + LIST_FOREACH(conditions, c, i->conditions) + if (c->tristate < 0) + printf(" %s %s=%s%s%s was not met\n", + --n ? special_glyph(TREE_BRANCH) : special_glyph(TREE_RIGHT), + c->name, + c->trigger ? "|" : "", + c->negate ? "!" : "", + c->param); + } + + if (!i->assert_result && i->assert_timestamp > 0) { + s1 = format_timestamp_relative(since1, sizeof(since1), i->assert_timestamp); + s2 = format_timestamp(since2, sizeof(since2), i->assert_timestamp); + + printf(" Assert: start %sassertion failed%s at %s%s%s\n", + ansi_highlight_red(), ansi_normal(), + s2, s1 ? "; " : "", strempty(s1)); + if (i->failed_assert_trigger) + printf(" none of the trigger assertions were met\n"); + else if (i->failed_assert) + printf(" %s=%s%s was not met\n", + i->failed_assert, + i->failed_assert_negate ? "!" : "", + i->failed_assert_parameter); + } + + if (i->sysfs_path) + printf(" Device: %s\n", i->sysfs_path); + if (i->where) + printf(" Where: %s\n", i->where); + if (i->what) + printf(" What: %s\n", i->what); + + STRV_FOREACH(t, i->documentation) + printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t); + + STRV_FOREACH_PAIR(t, t2, i->listen) + printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t); + + if (i->accept) + printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections); + + LIST_FOREACH(exec, p, i->exec) { + _cleanup_free_ char *argv = NULL; + bool good; + + /* Only show exited processes here */ + if (p->code == 0) + continue; + + argv = strv_join(p->argv, " "); + printf(" Process: "PID_FMT" %s=%s ", p->pid, p->name, strna(argv)); + + good = is_clean_exit(p->code, p->status, EXIT_CLEAN_DAEMON, NULL); + if (!good) { + on = ansi_highlight_red(); + off = ansi_normal(); + } else + on = off = ""; + + printf("%s(code=%s, ", on, sigchld_code_to_string(p->code)); + + if (p->code == CLD_EXITED) { + const char *c; + + printf("status=%i", p->status); + + c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD); + if (c) + printf("/%s", c); + + } else + printf("signal=%s", signal_to_string(p->status)); + + printf(")%s\n", off); + + if (i->main_pid == p->pid && + i->start_timestamp == p->start_timestamp && + i->exit_timestamp == p->start_timestamp) + /* Let's not show this twice */ + i->main_pid = 0; + + if (p->pid == i->control_pid) + i->control_pid = 0; + } + + if (i->main_pid > 0 || i->control_pid > 0) { + if (i->main_pid > 0) { + printf(" Main PID: "PID_FMT, i->main_pid); + + if (i->running) { + _cleanup_free_ char *comm = NULL; + (void) get_process_comm(i->main_pid, &comm); + if (comm) + printf(" (%s)", comm); + } else if (i->exit_code > 0) { + printf(" (code=%s, ", sigchld_code_to_string(i->exit_code)); + + if (i->exit_code == CLD_EXITED) { + const char *c; + + printf("status=%i", i->exit_status); + + c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD); + if (c) + printf("/%s", c); + + } else + printf("signal=%s", signal_to_string(i->exit_status)); + printf(")"); + } + } + + if (i->control_pid > 0) { + _cleanup_free_ char *c = NULL; + + if (i->main_pid > 0) + fputs("; Control PID: ", stdout); + else + fputs("Cntrl PID: ", stdout); /* if first in column, abbreviated so it fits alignment */ + + printf(PID_FMT, i->control_pid); + + (void) get_process_comm(i->control_pid, &c); + if (c) + printf(" (%s)", c); + } + + printf("\n"); + } + + if (i->status_text) + printf(" Status: \"%s\"\n", i->status_text); + if (i->status_errno > 0) + printf(" Error: %i (%s)\n", i->status_errno, strerror(i->status_errno)); + + if (i->tasks_current != (uint64_t) -1) { + printf(" Tasks: %" PRIu64, i->tasks_current); + + if (i->tasks_max != (uint64_t) -1) + printf(" (limit: %" PRIu64 ")\n", i->tasks_max); + else + printf("\n"); + } + + if (i->memory_current != (uint64_t) -1) { + char buf[FORMAT_BYTES_MAX]; + + printf(" Memory: %s", format_bytes(buf, sizeof(buf), i->memory_current)); + + if (i->memory_low > 0 || i->memory_high != CGROUP_LIMIT_MAX || + i->memory_max != CGROUP_LIMIT_MAX || i->memory_swap_max != CGROUP_LIMIT_MAX || + i->memory_limit != CGROUP_LIMIT_MAX) { + const char *prefix = ""; + + printf(" ("); + if (i->memory_low > 0) { + printf("%slow: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_low)); + prefix = " "; + } + if (i->memory_high != CGROUP_LIMIT_MAX) { + printf("%shigh: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_high)); + prefix = " "; + } + if (i->memory_max != CGROUP_LIMIT_MAX) { + printf("%smax: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_max)); + prefix = " "; + } + if (i->memory_swap_max != CGROUP_LIMIT_MAX) { + printf("%sswap max: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_swap_max)); + prefix = " "; + } + if (i->memory_limit != CGROUP_LIMIT_MAX) { + printf("%slimit: %s", prefix, format_bytes(buf, sizeof(buf), i->memory_limit)); + prefix = " "; + } + printf(")"); + } + printf("\n"); + } + + if (i->cpu_usage_nsec != (uint64_t) -1) { + char buf[FORMAT_TIMESPAN_MAX]; + printf(" CPU: %s\n", format_timespan(buf, sizeof(buf), i->cpu_usage_nsec / NSEC_PER_USEC, USEC_PER_MSEC)); + } + + if (i->control_group) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + static const char prefix[] = " "; + unsigned c; + + printf(" CGroup: %s\n", i->control_group); + + c = columns(); + if (c > sizeof(prefix) - 1) + c -= sizeof(prefix) - 1; + else + c = 0; + + r = unit_show_processes(bus, i->id, i->control_group, prefix, c, get_output_flags(), &error); + if (r == -EBADR) { + unsigned k = 0; + pid_t extra[2]; + + /* Fallback for older systemd versions where the GetUnitProcesses() call is not yet available */ + + if (i->main_pid > 0) + extra[k++] = i->main_pid; + + if (i->control_pid > 0) + extra[k++] = i->control_pid; + + show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix, c, extra, k, get_output_flags()); + } else if (r < 0) + log_warning_errno(r, "Failed to dump process list, ignoring: %s", bus_error_message(&error, r)); + } + + if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) + show_journal_by_unit( + stdout, + i->id, + arg_output, + 0, + i->inactive_exit_timestamp_monotonic, + arg_lines, + getuid(), + get_output_flags() | OUTPUT_BEGIN_NEWLINE, + SD_JOURNAL_LOCAL_ONLY, + arg_scope == UNIT_FILE_SYSTEM, + ellipsized); + + if (i->need_daemon_reload) + warn_unit_file_changed(i->id); +} + +static void show_unit_help(UnitStatusInfo *i) { + char **p; + + assert(i); + + if (!i->documentation) { + log_info("Documentation for %s not known.", i->id); + return; + } + + STRV_FOREACH(p, i->documentation) + if (startswith(*p, "man:")) + show_man_page(*p + 4, false); + else + log_info("Can't show: %s", *p); +} + +static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) { + int r; + + assert(name); + assert(m); + assert(i); + + switch (contents[0]) { + + case SD_BUS_TYPE_STRING: { + const char *s; + + r = sd_bus_message_read(m, "s", &s); + if (r < 0) + return bus_log_parse_error(r); + + if (!isempty(s)) { + if (streq(name, "Id")) + i->id = s; + else if (streq(name, "LoadState")) + i->load_state = s; + else if (streq(name, "ActiveState")) + i->active_state = s; + else if (streq(name, "SubState")) + i->sub_state = s; + else if (streq(name, "Description")) + i->description = s; + else if (streq(name, "FragmentPath")) + i->fragment_path = s; + else if (streq(name, "SourcePath")) + i->source_path = s; +#ifndef NOLEGACY + else if (streq(name, "DefaultControlGroup")) { + const char *e; + e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":"); + if (e) + i->control_group = e; + } +#endif + else if (streq(name, "ControlGroup")) + i->control_group = s; + else if (streq(name, "StatusText")) + i->status_text = s; + else if (streq(name, "PIDFile")) + i->pid_file = s; + else if (streq(name, "SysFSPath")) + i->sysfs_path = s; + else if (streq(name, "Where")) + i->where = s; + else if (streq(name, "What")) + i->what = s; + else if (streq(name, "Following")) + i->following = s; + else if (streq(name, "UnitFileState")) + i->unit_file_state = s; + else if (streq(name, "UnitFilePreset")) + i->unit_file_preset = s; + else if (streq(name, "Result")) + i->result = s; + } + + break; + } + + case SD_BUS_TYPE_BOOLEAN: { + int b; + + r = sd_bus_message_read(m, "b", &b); + if (r < 0) + return bus_log_parse_error(r); + + if (streq(name, "Accept")) + i->accept = b; + else if (streq(name, "NeedDaemonReload")) + i->need_daemon_reload = b; + else if (streq(name, "ConditionResult")) + i->condition_result = b; + else if (streq(name, "AssertResult")) + i->assert_result = b; + else if (streq(name, "Transient")) + i->transient = b; + + break; + } + + case SD_BUS_TYPE_UINT32: { + uint32_t u; + + r = sd_bus_message_read(m, "u", &u); + if (r < 0) + return bus_log_parse_error(r); + + if (streq(name, "MainPID")) { + if (u > 0) { + i->main_pid = (pid_t) u; + i->running = true; + } + } else if (streq(name, "ControlPID")) + i->control_pid = (pid_t) u; + else if (streq(name, "ExecMainPID")) { + if (u > 0) + i->main_pid = (pid_t) u; + } else if (streq(name, "NAccepted")) + i->n_accepted = u; + else if (streq(name, "NConnections")) + i->n_connections = u; + + break; + } + + case SD_BUS_TYPE_INT32: { + int32_t j; + + r = sd_bus_message_read(m, "i", &j); + if (r < 0) + return bus_log_parse_error(r); + + if (streq(name, "ExecMainCode")) + i->exit_code = (int) j; + else if (streq(name, "ExecMainStatus")) + i->exit_status = (int) j; + else if (streq(name, "StatusErrno")) + i->status_errno = (int) j; + + break; + } + + case SD_BUS_TYPE_UINT64: { + uint64_t u; + + r = sd_bus_message_read(m, "t", &u); + if (r < 0) + return bus_log_parse_error(r); + + if (streq(name, "ExecMainStartTimestamp")) + i->start_timestamp = (usec_t) u; + else if (streq(name, "ExecMainExitTimestamp")) + i->exit_timestamp = (usec_t) u; + else if (streq(name, "ActiveEnterTimestamp")) + i->active_enter_timestamp = (usec_t) u; + else if (streq(name, "InactiveEnterTimestamp")) + i->inactive_enter_timestamp = (usec_t) u; + else if (streq(name, "InactiveExitTimestamp")) + i->inactive_exit_timestamp = (usec_t) u; + else if (streq(name, "InactiveExitTimestampMonotonic")) + i->inactive_exit_timestamp_monotonic = (usec_t) u; + else if (streq(name, "ActiveExitTimestamp")) + i->active_exit_timestamp = (usec_t) u; + else if (streq(name, "ConditionTimestamp")) + i->condition_timestamp = (usec_t) u; + else if (streq(name, "AssertTimestamp")) + i->assert_timestamp = (usec_t) u; + else if (streq(name, "MemoryCurrent")) + i->memory_current = u; + else if (streq(name, "MemoryLow")) + i->memory_low = u; + else if (streq(name, "MemoryHigh")) + i->memory_high = u; + else if (streq(name, "MemoryMax")) + i->memory_max = u; + else if (streq(name, "MemorySwapMax")) + i->memory_swap_max = u; + else if (streq(name, "MemoryLimit")) + i->memory_limit = u; + else if (streq(name, "TasksCurrent")) + i->tasks_current = u; + else if (streq(name, "TasksMax")) + i->tasks_max = u; + else if (streq(name, "CPUUsageNSec")) + i->cpu_usage_nsec = u; + + break; + } + + case SD_BUS_TYPE_ARRAY: + + if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) { + _cleanup_free_ ExecStatusInfo *info = NULL; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)"); + if (r < 0) + return bus_log_parse_error(r); + + info = new0(ExecStatusInfo, 1); + if (!info) + return log_oom(); + + while ((r = exec_status_info_deserialize(m, info)) > 0) { + + info->name = strdup(name); + if (!info->name) + return log_oom(); + + LIST_PREPEND(exec, i->exec, info); + + info = new0(ExecStatusInfo, 1); + if (!info) + return log_oom(); + } + + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) { + const char *type, *path; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) { + + r = strv_extend(&i->listen, type); + if (r < 0) + return r; + + r = strv_extend(&i->listen, path); + if (r < 0) + return r; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "DropInPaths")) { + + r = sd_bus_message_read_strv(m, &i->dropin_paths); + if (r < 0) + return bus_log_parse_error(r); + + } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Documentation")) { + + r = sd_bus_message_read_strv(m, &i->documentation); + if (r < 0) + return bus_log_parse_error(r); + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Conditions")) { + const char *cond, *param; + int trigger, negate; + int32_t state; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, ¶m, &state)) > 0) { + _cleanup_(unit_condition_freep) UnitCondition *c = NULL; + + log_debug("%s trigger=%d negate=%d %s →%d", cond, trigger, negate, param, state); + + c = new0(UnitCondition, 1); + if (!c) + return log_oom(); + + c->name = strdup(cond); + c->param = strdup(param); + if (!c->name || !c->param) + return log_oom(); + + c->trigger = trigger; + c->negate = negate; + c->tristate = state; + + LIST_PREPEND(conditions, i->conditions, c); + c = NULL; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Asserts")) { + const char *cond, *param; + int trigger, negate; + int32_t state; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, ¶m, &state)) > 0) { + log_debug("%s %d %d %s %d", cond, trigger, negate, param, state); + if (state < 0 && (!trigger || !i->failed_assert)) { + i->failed_assert = cond; + i->failed_assert_trigger = trigger; + i->failed_assert_negate = negate; + i->failed_assert_parameter = param; + } + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + } else + goto skip; + + break; + + case SD_BUS_TYPE_STRUCT_BEGIN: + + if (streq(name, "LoadError")) { + const char *n, *message; + + r = sd_bus_message_read(m, "(ss)", &n, &message); + if (r < 0) + return bus_log_parse_error(r); + + if (!isempty(message)) + i->load_error = message; + } else + goto skip; + + break; + + default: + goto skip; + } + + return 0; + +skip: + r = sd_bus_message_skip(m, contents); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + +#define print_prop(name, fmt, ...) \ + do { \ + if (arg_value) \ + printf(fmt "\n", __VA_ARGS__); \ + else \ + printf("%s=" fmt "\n", name, __VA_ARGS__); \ + } while(0) + +static int print_property(const char *name, sd_bus_message *m, const char *contents) { + int r; + + assert(name); + assert(m); + + /* This is a low-level property printer, see + * print_status_info() for the nicer output */ + + if (arg_properties && !strv_find(arg_properties, name)) { + /* skip what we didn't read */ + r = sd_bus_message_skip(m, contents); + return r; + } + + switch (contents[0]) { + + case SD_BUS_TYPE_STRUCT_BEGIN: + + if (contents[1] == SD_BUS_TYPE_UINT32 && streq(name, "Job")) { + uint32_t u; + + r = sd_bus_message_read(m, "(uo)", &u, NULL); + if (r < 0) + return bus_log_parse_error(r); + + if (u > 0) + print_prop(name, "%"PRIu32, u); + else if (arg_all) + print_prop(name, "%s", ""); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Unit")) { + const char *s; + + r = sd_bus_message_read(m, "(so)", &s, NULL); + if (r < 0) + return bus_log_parse_error(r); + + if (arg_all || !isempty(s)) + print_prop(name, "%s", s); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "LoadError")) { + const char *a = NULL, *b = NULL; + + r = sd_bus_message_read(m, "(ss)", &a, &b); + if (r < 0) + return bus_log_parse_error(r); + + if (arg_all || !isempty(a) || !isempty(b)) + print_prop(name, "%s \"%s\"", strempty(a), strempty(b)); + + return 0; + } else if (streq_ptr(name, "SystemCallFilter")) { + _cleanup_strv_free_ char **l = NULL; + int whitelist; + + r = sd_bus_message_enter_container(m, 'r', "bas"); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read(m, "b", &whitelist); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_strv(m, &l); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + if (arg_all || whitelist || !strv_isempty(l)) { + bool first = true; + char **i; + + if (!arg_value) { + fputs(name, stdout); + fputc('=', stdout); + } + + if (!whitelist) + fputc('~', stdout); + + STRV_FOREACH(i, l) { + if (first) + first = false; + else + fputc(' ', stdout); + + fputs(*i, stdout); + } + fputc('\n', stdout); + } + + return 0; + } + + break; + + case SD_BUS_TYPE_ARRAY: + + if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "EnvironmentFiles")) { + const char *path; + int ignore; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sb)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(sb)", &path, &ignore)) > 0) + print_prop("EnvironmentFile", "%s (ignore_errors=%s)", path, yes_no(ignore)); + + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Paths")) { + const char *type, *path; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) + print_prop(type, "%s", path); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) { + const char *type, *path; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) + if (arg_value) + puts(path); + else + printf("Listen%s=%s\n", type, path); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Timers")) { + const char *base; + uint64_t value, next_elapse; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(stt)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(stt)", &base, &value, &next_elapse)) > 0) { + char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX]; + + print_prop(base, "{ value=%s ; next_elapse=%s }", + format_timespan(timespan1, sizeof(timespan1), value, 0), + format_timespan(timespan2, sizeof(timespan2), next_elapse, 0)); + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) { + ExecStatusInfo info = {}; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = exec_status_info_deserialize(m, &info)) > 0) { + char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX]; + _cleanup_free_ char *tt; + + tt = strv_join(info.argv, " "); + + print_prop(name, + "{ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid="PID_FMT" ; code=%s ; status=%i%s%s }", + strna(info.path), + strna(tt), + yes_no(info.ignore), + strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)), + strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)), + info.pid, + sigchld_code_to_string(info.code), + info.status, + info.code == CLD_EXITED ? "" : "/", + strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status))); + + free(info.path); + strv_free(info.argv); + zero(info); + } + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "DeviceAllow")) { + const char *path, *rwm; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(ss)", &path, &rwm)) > 0) + print_prop(name, "%s %s", strna(path), strna(rwm)); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && + STR_IN_SET(name, "IODeviceWeight", "BlockIODeviceWeight")) { + const char *path; + uint64_t weight; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(st)", &path, &weight)) > 0) + print_prop(name, "%s %"PRIu64, strna(path), weight); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + + } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && + (cgroup_io_limit_type_from_string(name) >= 0 || + STR_IN_SET(name, "BlockIOReadBandwidth", "BlockIOWriteBandwidth"))) { + const char *path; + uint64_t bandwidth; + + r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(m, "(st)", &path, &bandwidth)) > 0) + print_prop(name, "%s %"PRIu64, strna(path), bandwidth); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(m); + if (r < 0) + return bus_log_parse_error(r); + + return 0; + } + + break; + } + + r = bus_print_property(name, m, arg_value, arg_all); + if (r < 0) + return bus_log_parse_error(r); + + if (r == 0) { + r = sd_bus_message_skip(m, contents); + if (r < 0) + return bus_log_parse_error(r); + + if (arg_all) + printf("%s=[unprintable]\n", name); + } + + return 0; +} + +static int show_one( + const char *verb, + sd_bus *bus, + const char *path, + const char *unit, + bool show_properties, + bool *new_line, + bool *ellipsized) { + + static const struct bus_properties_map property_map[] = { + { "LoadState", "s", map_string_no_copy, offsetof(UnitStatusInfo, load_state) }, + { "ActiveState", "s", map_string_no_copy, offsetof(UnitStatusInfo, active_state) }, + {} + }; + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_set_free_ Set *found_properties = NULL; + _cleanup_(unit_status_info_free) UnitStatusInfo info = { + .memory_current = (uint64_t) -1, + .memory_high = CGROUP_LIMIT_MAX, + .memory_max = CGROUP_LIMIT_MAX, + .memory_swap_max = CGROUP_LIMIT_MAX, + .memory_limit = (uint64_t) -1, + .cpu_usage_nsec = (uint64_t) -1, + .tasks_current = (uint64_t) -1, + .tasks_max = (uint64_t) -1, + }; + int r; + + assert(path); + assert(new_line); + + log_debug("Showing one %s", path); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.DBus.Properties", + "GetAll", + &error, + &reply, + "s", ""); + if (r < 0) + return log_error_errno(r, "Failed to get properties: %s", bus_error_message(&error, r)); + + if (unit) { + r = bus_message_map_all_properties(reply, property_map, &info); + if (r < 0) + return log_error_errno(r, "Failed to map properties: %s", bus_error_message(&error, r)); + + if (streq_ptr(info.load_state, "not-found") && streq_ptr(info.active_state, "inactive")) { + log_full(streq(verb, "status") ? LOG_ERR : LOG_DEBUG, + "Unit %s could not be found.", unit); + + if (streq(verb, "status")) + return EXIT_PROGRAM_OR_SERVICES_STATUS_UNKNOWN; + + if (!streq(verb, "show")) + return -ENOENT; + } + + r = sd_bus_message_rewind(reply, true); + if (r < 0) + return log_error_errno(r, "Failed to rewind: %s", bus_error_message(&error, r)); + } + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}"); + if (r < 0) + return bus_log_parse_error(r); + + if (*new_line) + printf("\n"); + + *new_line = true; + + while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { + const char *name, *contents; + + r = sd_bus_message_read(reply, "s", &name); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_peek_type(reply, NULL, &contents); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents); + if (r < 0) + return bus_log_parse_error(r); + + if (show_properties) { + r = set_ensure_allocated(&found_properties, &string_hash_ops); + if (r < 0) + return log_oom(); + + r = set_put(found_properties, name); + if (r < 0 && r != EEXIST) + return log_oom(); + + r = print_property(name, reply, contents); + } else + r = status_property(name, reply, &info, contents); + if (r < 0) + return r; + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + r = 0; + if (show_properties) { + char **pp; + int not_found_level = streq(verb, "show") ? LOG_DEBUG : LOG_WARNING; + + STRV_FOREACH(pp, arg_properties) + if (!set_contains(found_properties, *pp)) { + log_full(not_found_level, "Property %s does not exist.", *pp); + r = -ENXIO; + } + + } else if (streq(verb, "help")) + show_unit_help(&info); + else if (streq(verb, "status")) { + print_status_info(bus, &info, ellipsized); + + if (info.active_state && !STR_IN_SET(info.active_state, "active", "reloading")) + r = EXIT_PROGRAM_NOT_RUNNING; + else + r = EXIT_PROGRAM_RUNNING_OR_SERVICE_OK; + } + + return r; +} + +static int get_unit_dbus_path_by_pid( + sd_bus *bus, + uint32_t pid, + char **unit) { + + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + char *u; + int r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnitByPID", + &error, + &reply, + "u", pid); + if (r < 0) + return log_error_errno(r, "Failed to get unit for PID %"PRIu32": %s", pid, bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "o", &u); + if (r < 0) + return bus_log_parse_error(r); + + u = strdup(u); + if (!u) + return log_oom(); + + *unit = u; + return 0; +} + +static int show_all( + const char* verb, + sd_bus *bus, + bool show_properties, + bool *new_line, + bool *ellipsized) { + + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ UnitInfo *unit_infos = NULL; + const UnitInfo *u; + unsigned c; + int r, ret = 0; + + r = get_unit_list(bus, NULL, NULL, &unit_infos, 0, &reply); + if (r < 0) + return r; + + pager_open(arg_no_pager, false); + + c = (unsigned) r; + + qsort_safe(unit_infos, c, sizeof(UnitInfo), compare_unit_info); + + for (u = unit_infos; u < unit_infos + c; u++) { + _cleanup_free_ char *p = NULL; + + p = unit_dbus_path_from_name(u->id); + if (!p) + return log_oom(); + + r = show_one(verb, bus, p, u->id, show_properties, new_line, ellipsized); + if (r < 0) + return r; + else if (r > 0 && ret == 0) + ret = r; + } + + return ret; +} + +static int show_system_status(sd_bus *bus) { + char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], since2[FORMAT_TIMESTAMP_MAX]; + _cleanup_free_ char *hn = NULL; + _cleanup_(machine_info_clear) struct machine_info mi = {}; + const char *on, *off; + int r; + + hn = gethostname_malloc(); + if (!hn) + return log_oom(); + + r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, &mi); + if (r < 0) + return log_error_errno(r, "Failed to read server status: %m"); + + if (streq_ptr(mi.state, "degraded")) { + on = ansi_highlight_red(); + off = ansi_normal(); + } else if (!streq_ptr(mi.state, "running")) { + on = ansi_highlight_yellow(); + off = ansi_normal(); + } else + on = off = ""; + + printf("%s%s%s %s\n", on, special_glyph(BLACK_CIRCLE), off, arg_host ? arg_host : hn); + + printf(" State: %s%s%s\n", + on, strna(mi.state), off); + + printf(" Jobs: %" PRIu32 " queued\n", mi.n_jobs); + printf(" Failed: %" PRIu32 " units\n", mi.n_failed_units); + + printf(" Since: %s; %s\n", + format_timestamp(since2, sizeof(since2), mi.timestamp), + format_timestamp_relative(since1, sizeof(since1), mi.timestamp)); + + printf(" CGroup: %s\n", mi.control_group ?: "/"); + if (IN_SET(arg_transport, + BUS_TRANSPORT_LOCAL, + BUS_TRANSPORT_MACHINE)) { + static const char prefix[] = " "; + unsigned c; + + c = columns(); + if (c > sizeof(prefix) - 1) + c -= sizeof(prefix) - 1; + else + c = 0; + + show_cgroup(SYSTEMD_CGROUP_CONTROLLER, strempty(mi.control_group), prefix, c, get_output_flags()); + } + + return 0; +} + +static int show(int argc, char *argv[], void *userdata) { + bool show_properties, show_status, show_help, new_line = false; + bool ellipsized = false; + int r, ret = 0; + sd_bus *bus; + + assert(argv); + + show_properties = streq(argv[0], "show"); + show_status = streq(argv[0], "status"); + show_help = streq(argv[0], "help"); + + if (show_help && argc <= 1) { + log_error("This command expects one or more unit names. Did you mean --help?"); + return -EINVAL; + } + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + pager_open(arg_no_pager, false); + + if (show_status) + /* Increase max number of open files to 16K if we can, we + * might needs this when browsing journal files, which might + * be split up into many files. */ + setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(16384)); + + /* If no argument is specified inspect the manager itself */ + if (show_properties && argc <= 1) + return show_one(argv[0], bus, "/org/freedesktop/systemd1", NULL, show_properties, &new_line, &ellipsized); + + if (show_status && argc <= 1) { + + show_system_status(bus); + new_line = true; + + if (arg_all) + ret = show_all(argv[0], bus, false, &new_line, &ellipsized); + } else { + _cleanup_free_ char **patterns = NULL; + char **name; + + STRV_FOREACH(name, strv_skip(argv, 1)) { + _cleanup_free_ char *path = NULL, *unit = NULL; + uint32_t id; + + if (safe_atou32(*name, &id) < 0) { + if (strv_push(&patterns, *name) < 0) + return log_oom(); + + continue; + } else if (show_properties) { + /* Interpret as job id */ + if (asprintf(&path, "/org/freedesktop/systemd1/job/%u", id) < 0) + return log_oom(); + + } else { + /* Interpret as PID */ + r = get_unit_dbus_path_by_pid(bus, id, &path); + if (r < 0) { + ret = r; + continue; + } + + r = unit_name_from_dbus_path(path, &unit); + if (r < 0) + return log_oom(); + } + + r = show_one(argv[0], bus, path, unit, show_properties, &new_line, &ellipsized); + if (r < 0) + return r; + else if (r > 0 && ret == 0) + ret = r; + } + + if (!strv_isempty(patterns)) { + _cleanup_strv_free_ char **names = NULL; + + r = expand_names(bus, patterns, NULL, &names); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + STRV_FOREACH(name, names) { + _cleanup_free_ char *path; + + path = unit_dbus_path_from_name(*name); + if (!path) + return log_oom(); + + r = show_one(argv[0], bus, path, *name, show_properties, &new_line, &ellipsized); + if (r < 0) + return r; + if (r > 0 && ret == 0) + ret = r; + } + } + } + + if (ellipsized && !arg_quiet) + printf("Hint: Some lines were ellipsized, use -l to show in full.\n"); + + return ret; +} + +static int cat_file(const char *filename, bool newline) { + _cleanup_close_ int fd; + + fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOCTTY); + if (fd < 0) + return -errno; + + printf("%s%s# %s%s\n", + newline ? "\n" : "", + ansi_highlight_blue(), + filename, + ansi_normal()); + fflush(stdout); + + return copy_bytes(fd, STDOUT_FILENO, (uint64_t) -1, false); +} + +static int cat(int argc, char *argv[], void *userdata) { + _cleanup_lookup_paths_free_ LookupPaths lp = {}; + _cleanup_strv_free_ char **names = NULL; + char **name; + sd_bus *bus; + bool first = true; + int r; + + if (arg_transport != BUS_TRANSPORT_LOCAL) { + log_error("Cannot remotely cat units."); + return -EINVAL; + } + + r = lookup_paths_init(&lp, arg_scope, 0, arg_root); + if (r < 0) + return log_error_errno(r, "Failed to determine unit paths: %m"); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = expand_names(bus, strv_skip(argv, 1), NULL, &names); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + pager_open(arg_no_pager, false); + + STRV_FOREACH(name, names) { + _cleanup_free_ char *fragment_path = NULL; + _cleanup_strv_free_ char **dropin_paths = NULL; + char **path; + + r = unit_find_paths(bus, *name, &lp, &fragment_path, &dropin_paths); + if (r < 0) + return r; + else if (r == 0) + return -ENOENT; + + if (first) + first = false; + else + puts(""); + + if (need_daemon_reload(bus, *name) > 0) /* ignore errors (<0), this is informational output */ + fprintf(stderr, + "%s# Warning: %s changed on disk, the version systemd has loaded is outdated.\n" + "%s# This output shows the current version of the unit's original fragment and drop-in files.\n" + "%s# If fragments or drop-ins were added or removed, they are not properly reflected in this output.\n" + "%s# Run 'systemctl%s daemon-reload' to reload units.%s\n", + ansi_highlight_red(), + *name, + ansi_highlight_red(), + ansi_highlight_red(), + ansi_highlight_red(), + arg_scope == UNIT_FILE_SYSTEM ? "" : " --user", + ansi_normal()); + + if (fragment_path) { + r = cat_file(fragment_path, false); + if (r < 0) + return log_warning_errno(r, "Failed to cat %s: %m", fragment_path); + } + + STRV_FOREACH(path, dropin_paths) { + r = cat_file(*path, path == dropin_paths); + if (r < 0) + return log_warning_errno(r, "Failed to cat %s: %m", *path); + } + } + + return 0; +} + +static int set_property(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *n = NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "SetUnitProperties"); + if (r < 0) + return bus_log_create_error(r); + + r = unit_name_mangle(argv[1], UNIT_NAME_NOGLOB, &n); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + r = sd_bus_message_append(m, "sb", n, arg_runtime); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, "(sv)"); + if (r < 0) + return bus_log_create_error(r); + + r = bus_append_unit_property_assignment_many(m, strv_skip(argv, 2)); + if (r < 0) + return r; + + r = sd_bus_message_close_container(m); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, NULL); + if (r < 0) + return log_error_errno(r, "Failed to set unit properties on %s: %s", n, bus_error_message(&error, r)); + + return 0; +} + +static int daemon_reload(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + const char *method; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + switch (arg_action) { + + case ACTION_RELOAD: + method = "Reload"; + break; + + case ACTION_REEXEC: + method = "Reexecute"; + break; + + case ACTION_SYSTEMCTL: + method = streq(argv[0], "daemon-reexec") ? "Reexecute" : + /* "daemon-reload" */ "Reload"; + break; + + default: + assert_not_reached("Unexpected action"); + } + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + method); + if (r < 0) + return bus_log_create_error(r); + + /* Note we use an extra-long timeout here. This is because a reload or reexec means generators are rerun which + * are timed out after DEFAULT_TIMEOUT_USEC. Let's use twice that time here, so that the generators can have + * their timeout, and for everything else there's the same time budget in place. */ + + r = sd_bus_call(bus, m, DEFAULT_TIMEOUT_USEC * 2, &error, NULL); + + /* On reexecution, we expect a disconnect, not a reply */ + if (IN_SET(r, -ETIMEDOUT, -ECONNRESET) && streq(method, "Reexecute")) + r = 0; + + if (r < 0 && arg_action == ACTION_SYSTEMCTL) + return log_error_errno(r, "Failed to reload daemon: %s", bus_error_message(&error, r)); + + /* Note that for the legacy commands (i.e. those with action != ACTION_SYSTEMCTL) we support fallbacks to the + * old ways of doing things, hence don't log any error in that case here. */ + + return r < 0 ? r : 0; +} + +static int trivial_method(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + const char *method; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + method = + streq(argv[0], "clear-jobs") || + streq(argv[0], "cancel") ? "ClearJobs" : + streq(argv[0], "reset-failed") ? "ResetFailed" : + streq(argv[0], "halt") ? "Halt" : + streq(argv[0], "reboot") ? "Reboot" : + streq(argv[0], "kexec") ? "KExec" : + streq(argv[0], "exit") ? "Exit" : + /* poweroff */ "PowerOff"; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + method, + &error, + NULL, + NULL); + if (r < 0 && arg_action == ACTION_SYSTEMCTL) + return log_error_errno(r, "Failed to execute operation: %s", bus_error_message(&error, r)); + + /* Note that for the legacy commands (i.e. those with action != ACTION_SYSTEMCTL) we support fallbacks to the + * old ways of doing things, hence don't log any error in that case here. */ + + return r < 0 ? r : 0; +} + +static int reset_failed(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + sd_bus *bus; + char **name; + int r, q; + + if (argc <= 1) + return trivial_method(argc, argv, userdata); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + r = expand_names(bus, strv_skip(argv, 1), NULL, &names); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + + q = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "ResetFailedUnit", + &error, + NULL, + "s", *name); + if (q < 0) { + log_error_errno(q, "Failed to reset failed state of unit %s: %s", *name, bus_error_message(&error, q)); + if (r == 0) + r = q; + } + } + + return r; +} + +static int show_environment(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *text; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + pager_open(arg_no_pager, false); + + r = sd_bus_get_property( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "Environment", + &error, + &reply, + "as"); + if (r < 0) + return log_error_errno(r, "Failed to get environment: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &text)) > 0) + puts(text); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + +static int switch_root(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *cmdline_init = NULL; + const char *root, *init; + sd_bus *bus; + int r; + + if (arg_transport != BUS_TRANSPORT_LOCAL) { + log_error("Cannot switch root remotely."); + return -EINVAL; + } + + if (argc < 2 || argc > 3) { + log_error("Wrong number of arguments."); + return -EINVAL; + } + + root = argv[1]; + + if (argc >= 3) + init = argv[2]; + else { + r = parse_env_file("/proc/cmdline", WHITESPACE, + "init", &cmdline_init, + NULL); + if (r < 0) + log_debug_errno(r, "Failed to parse /proc/cmdline: %m"); + + init = cmdline_init; + } + + init = empty_to_null(init); + if (init) { + const char *root_systemd_path = NULL, *root_init_path = NULL; + + root_systemd_path = strjoina(root, "/" SYSTEMD_BINARY_PATH); + root_init_path = strjoina(root, "/", init); + + /* If the passed init is actually the same as the + * systemd binary, then let's suppress it. */ + if (files_same(root_init_path, root_systemd_path) > 0) + init = NULL; + } + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + log_debug("Switching root - root: %s; init: %s", root, strna(init)); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "SwitchRoot", + &error, + NULL, + "ss", root, init); + if (r < 0) + return log_error_errno(r, "Failed to switch root: %s", bus_error_message(&error, r)); + + return 0; +} + +static int set_environment(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + const char *method; + sd_bus *bus; + int r; + + assert(argc > 1); + assert(argv); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + method = streq(argv[0], "set-environment") + ? "SetEnvironment" + : "UnsetEnvironment"; + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + method); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, strv_skip(argv, 1)); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, NULL); + if (r < 0) + return log_error_errno(r, "Failed to set environment: %s", bus_error_message(&error, r)); + + return 0; +} + +static int import_environment(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "SetEnvironment"); + if (r < 0) + return bus_log_create_error(r); + + if (argc < 2) + r = sd_bus_message_append_strv(m, environ); + else { + char **a, **b; + + r = sd_bus_message_open_container(m, 'a', "s"); + if (r < 0) + return bus_log_create_error(r); + + STRV_FOREACH(a, strv_skip(argv, 1)) { + + if (!env_name_is_valid(*a)) { + log_error("Not a valid environment variable name: %s", *a); + return -EINVAL; + } + + STRV_FOREACH(b, environ) { + const char *eq; + + eq = startswith(*b, *a); + if (eq && *eq == '=') { + + r = sd_bus_message_append(m, "s", *b); + if (r < 0) + return bus_log_create_error(r); + + break; + } + } + } + + r = sd_bus_message_close_container(m); + } + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, NULL); + if (r < 0) + return log_error_errno(r, "Failed to import environment: %s", bus_error_message(&error, r)); + + return 0; +} + +static int enable_sysv_units(const char *verb, char **args) { + int r = 0; + +#if defined(HAVE_SYSV_COMPAT) + _cleanup_lookup_paths_free_ LookupPaths paths = {}; + unsigned f = 0; + + /* Processes all SysV units, and reshuffles the array so that afterwards only the native units remain */ + + if (arg_scope != UNIT_FILE_SYSTEM) + return 0; + + if (getenv_bool("SYSTEMCTL_SKIP_SYSV") > 0) + return 0; + + if (!STR_IN_SET(verb, + "enable", + "disable", + "is-enabled")) + return 0; + + r = lookup_paths_init(&paths, arg_scope, LOOKUP_PATHS_EXCLUDE_GENERATED, arg_root); + if (r < 0) + return r; + + r = 0; + while (args[f]) { + + const char *argv[] = { + ROOTLIBEXECDIR "/systemd-sysv-install", + NULL, + NULL, + NULL, + NULL, + }; + + _cleanup_free_ char *p = NULL, *q = NULL, *l = NULL; + bool found_native = false, found_sysv; + siginfo_t status; + const char *name; + unsigned c = 1; + pid_t pid; + int j; + + name = args[f++]; + + if (!endswith(name, ".service")) + continue; + + if (path_is_absolute(name)) + continue; + + j = unit_file_exists(arg_scope, &paths, name); + if (j < 0 && !IN_SET(j, -ELOOP, -ERFKILL, -EADDRNOTAVAIL)) + return log_error_errno(j, "Failed to lookup unit file state: %m"); + found_native = j != 0; + + /* If we have both a native unit and a SysV script, enable/disable them both (below); for is-enabled, + * prefer the native unit */ + if (found_native && streq(verb, "is-enabled")) + continue; + + p = path_join(arg_root, SYSTEM_SYSVINIT_PATH, name); + if (!p) + return log_oom(); + + p[strlen(p) - strlen(".service")] = 0; + found_sysv = access(p, F_OK) >= 0; + if (!found_sysv) + continue; + + if (!arg_quiet) { + if (found_native) + log_info("Synchronizing state of %s with SysV service script with %s.", name, argv[0]); + else + log_info("%s is not a native service, redirecting to systemd-sysv-install.", name); + } + + if (!isempty(arg_root)) + argv[c++] = q = strappend("--root=", arg_root); + + argv[c++] = verb; + argv[c++] = basename(p); + argv[c] = NULL; + + l = strv_join((char**)argv, " "); + if (!l) + return log_oom(); + + log_info("Executing: %s", l); + + pid = fork(); + if (pid < 0) + return log_error_errno(errno, "Failed to fork: %m"); + else if (pid == 0) { + /* Child */ + + (void) reset_all_signal_handlers(); + (void) reset_signal_mask(); + + execv(argv[0], (char**) argv); + log_error_errno(errno, "Failed to execute %s: %m", argv[0]); + _exit(EXIT_FAILURE); + } + + j = wait_for_terminate(pid, &status); + if (j < 0) + return log_error_errno(j, "Failed to wait for child: %m"); + + if (status.si_code == CLD_EXITED) { + if (streq(verb, "is-enabled")) { + if (status.si_status == 0) { + if (!arg_quiet) + puts("enabled"); + r = 1; + } else { + if (!arg_quiet) + puts("disabled"); + } + + } else if (status.si_status != 0) + return -EBADE; /* We don't warn here, under the assumption the script already showed an explanation */ + } else { + log_error("Unexpected waitid() result."); + return -EPROTO; + } + + if (found_native) + continue; + + /* Remove this entry, so that we don't try enabling it as native unit */ + assert(f > 0); + f--; + assert(args[f] == name); + strv_remove(args, name); + } + +#endif + return r; +} + +static int mangle_names(char **original_names, char ***mangled_names) { + char **i, **l, **name; + int r; + + l = i = new(char*, strv_length(original_names) + 1); + if (!l) + return log_oom(); + + STRV_FOREACH(name, original_names) { + + /* When enabling units qualified path names are OK, + * too, hence allow them explicitly. */ + + if (is_path(*name)) { + *i = strdup(*name); + if (!*i) { + strv_free(l); + return log_oom(); + } + } else { + r = unit_name_mangle(*name, UNIT_NAME_NOGLOB, i); + if (r < 0) { + strv_free(l); + return log_error_errno(r, "Failed to mangle unit name: %m"); + } + } + + i++; + } + + *i = NULL; + *mangled_names = l; + + return 0; +} + +static int normalize_names(char **names, bool warn_if_path) { + char **u; + bool was_path = false; + + STRV_FOREACH(u, names) { + int r; + + if (!is_path(*u)) + continue; + + r = free_and_strdup(u, basename(*u)); + if (r < 0) + return log_error_errno(r, "Failed to normalize unit file path: %m"); + + was_path = true; + } + + if (warn_if_path && was_path) + log_warning("Warning: Can't execute disable on the unit file path. Proceeding with the unit name."); + + return 0; +} + +static int unit_exists(const char *unit) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_free_ char *path = NULL; + static const struct bus_properties_map property_map[] = { + { "LoadState", "s", map_string_no_copy, offsetof(UnitStatusInfo, load_state) }, + { "ActiveState", "s", map_string_no_copy, offsetof(UnitStatusInfo, active_state)}, + {}, + }; + UnitStatusInfo info = {}; + sd_bus *bus; + int r; + + path = unit_dbus_path_from_name(unit); + if (!path) + return log_oom(); + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.DBus.Properties", + "GetAll", + &error, + &reply, + "s", ""); + if (r < 0) + return log_error_errno(r, "Failed to get properties: %s", bus_error_message(&error, r)); + + r = bus_message_map_all_properties(reply, property_map, &info); + if (r < 0) + return log_error_errno(r, "Failed to map properties: %s", bus_error_message(&error, r)); + + return !streq_ptr(info.load_state, "not-found") || !streq_ptr(info.active_state, "inactive"); +} + +static int enable_unit(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + const char *verb = argv[0]; + UnitFileChange *changes = NULL; + unsigned n_changes = 0; + int carries_install_info = -1; + bool ignore_carries_install_info = arg_quiet; + int r; + + if (!argv[1]) + return 0; + + r = mangle_names(strv_skip(argv, 1), &names); + if (r < 0) + return r; + + r = enable_sysv_units(verb, names); + if (r < 0) + return r; + + /* If the operation was fully executed by the SysV compat, let's finish early */ + if (strv_isempty(names)) { + if (arg_no_reload || install_client_side()) + return 0; + return daemon_reload(argc, argv, userdata); + } + + if (streq(verb, "disable")) { + r = normalize_names(names, true); + if (r < 0) + return r; + } + + if (install_client_side()) { + UnitFileFlags flags; + + flags = args_to_flags(); + if (streq(verb, "enable")) { + r = unit_file_enable(arg_scope, flags, arg_root, names, &changes, &n_changes); + carries_install_info = r; + } else if (streq(verb, "disable")) + r = unit_file_disable(arg_scope, flags, arg_root, names, &changes, &n_changes); + else if (streq(verb, "reenable")) { + r = unit_file_reenable(arg_scope, flags, arg_root, names, &changes, &n_changes); + carries_install_info = r; + } else if (streq(verb, "link")) + r = unit_file_link(arg_scope, flags, arg_root, names, &changes, &n_changes); + else if (streq(verb, "preset")) { + r = unit_file_preset(arg_scope, flags, arg_root, names, arg_preset_mode, &changes, &n_changes); + } else if (streq(verb, "mask")) + r = unit_file_mask(arg_scope, flags, arg_root, names, &changes, &n_changes); + else if (streq(verb, "unmask")) + r = unit_file_unmask(arg_scope, flags, arg_root, names, &changes, &n_changes); + else if (streq(verb, "revert")) + r = unit_file_revert(arg_scope, arg_root, names, &changes, &n_changes); + else + assert_not_reached("Unknown verb"); + + unit_file_dump_changes(r, verb, changes, n_changes, arg_quiet); + if (r < 0) + goto finish; + r = 0; + } else { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + bool expect_carries_install_info = false; + bool send_runtime = true, send_force = true, send_preset_mode = false; + const char *method; + sd_bus *bus; + + if (STR_IN_SET(verb, "mask", "unmask")) { + r = unit_exists(*names); + if (r < 0) + return r; + if (r == 0) + log_notice("Unit %s does not exist, proceeding anyway.", *names); + } + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + if (streq(verb, "enable")) { + method = "EnableUnitFiles"; + expect_carries_install_info = true; + } else if (streq(verb, "disable")) { + method = "DisableUnitFiles"; + send_force = false; + } else if (streq(verb, "reenable")) { + method = "ReenableUnitFiles"; + expect_carries_install_info = true; + } else if (streq(verb, "link")) + method = "LinkUnitFiles"; + else if (streq(verb, "preset")) { + + if (arg_preset_mode != UNIT_FILE_PRESET_FULL) { + method = "PresetUnitFilesWithMode"; + send_preset_mode = true; + } else + method = "PresetUnitFiles"; + + expect_carries_install_info = true; + ignore_carries_install_info = true; + } else if (streq(verb, "mask")) + method = "MaskUnitFiles"; + else if (streq(verb, "unmask")) { + method = "UnmaskUnitFiles"; + send_force = false; + } else if (streq(verb, "revert")) { + method = "RevertUnitFiles"; + send_runtime = send_force = false; + } else + assert_not_reached("Unknown verb"); + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + method); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, names); + if (r < 0) + return bus_log_create_error(r); + + if (send_preset_mode) { + r = sd_bus_message_append(m, "s", unit_file_preset_mode_to_string(arg_preset_mode)); + if (r < 0) + return bus_log_create_error(r); + } + + if (send_runtime) { + r = sd_bus_message_append(m, "b", arg_runtime); + if (r < 0) + return bus_log_create_error(r); + } + + if (send_force) { + r = sd_bus_message_append(m, "b", arg_force); + if (r < 0) + return bus_log_create_error(r); + } + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0) + return log_error_errno(r, "Failed to %s unit: %s", verb, bus_error_message(&error, r)); + + if (expect_carries_install_info) { + r = sd_bus_message_read(reply, "b", &carries_install_info); + if (r < 0) + return bus_log_parse_error(r); + } + + r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); + if (r < 0) + goto finish; + + /* Try to reload if enabled */ + if (!arg_no_reload) + r = daemon_reload(argc, argv, userdata); + else + r = 0; + } + + if (carries_install_info == 0 && !ignore_carries_install_info) + log_warning("The unit files have no installation config (WantedBy, RequiredBy, Also, Alias\n" + "settings in the [Install] section, and DefaultInstance for template units).\n" + "This means they are not meant to be enabled using systemctl.\n" + "Possible reasons for having this kind of units are:\n" + "1) A unit may be statically enabled by being symlinked from another unit's\n" + " .wants/ or .requires/ directory.\n" + "2) A unit's purpose may be to act as a helper for some other unit which has\n" + " a requirement dependency on it.\n" + "3) A unit may be started when needed via activation (socket, path, timer,\n" + " D-Bus, udev, scripted systemctl call, ...).\n" + "4) In case of template units, the unit is meant to be enabled with some\n" + " instance name specified."); + + if (arg_now && n_changes > 0 && STR_IN_SET(argv[0], "enable", "disable", "mask")) { + char *new_args[n_changes + 2]; + sd_bus *bus; + unsigned i; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + goto finish; + + new_args[0] = (char*) (streq(argv[0], "enable") ? "start" : "stop"); + for (i = 0; i < n_changes; i++) + new_args[i + 1] = basename(changes[i].path); + new_args[i + 1] = NULL; + + r = start_unit(strv_length(new_args), new_args, userdata); + } + +finish: + unit_file_changes_free(changes, n_changes); + + return r; +} + +static int add_dependency(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + _cleanup_free_ char *target = NULL; + const char *verb = argv[0]; + UnitFileChange *changes = NULL; + unsigned n_changes = 0; + UnitDependency dep; + int r = 0; + + if (!argv[1]) + return 0; + + r = unit_name_mangle_with_suffix(argv[1], UNIT_NAME_NOGLOB, ".target", &target); + if (r < 0) + return log_error_errno(r, "Failed to mangle unit name: %m"); + + r = mangle_names(strv_skip(argv, 2), &names); + if (r < 0) + return r; + + if (streq(verb, "add-wants")) + dep = UNIT_WANTS; + else if (streq(verb, "add-requires")) + dep = UNIT_REQUIRES; + else + assert_not_reached("Unknown verb"); + + if (install_client_side()) { + r = unit_file_add_dependency(arg_scope, args_to_flags(), arg_root, names, target, dep, &changes, &n_changes); + unit_file_dump_changes(r, "add dependency on", changes, n_changes, arg_quiet); + + if (r > 0) + r = 0; + } else { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL, *m = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + r = sd_bus_message_new_method_call( + bus, + &m, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "AddDependencyUnitFiles"); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append_strv(m, names); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_message_append(m, "ssbb", target, unit_dependency_to_string(dep), arg_runtime, arg_force); + if (r < 0) + return bus_log_create_error(r); + + r = sd_bus_call(bus, m, 0, &error, &reply); + if (r < 0) + return log_error_errno(r, "Failed to add dependency: %s", bus_error_message(&error, r)); + + r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); + if (r < 0) + goto finish; + + if (arg_no_reload) { + r = 0; + goto finish; + } + + r = daemon_reload(argc, argv, userdata); + } + +finish: + unit_file_changes_free(changes, n_changes); + + return r; +} + +static int preset_all(int argc, char *argv[], void *userdata) { + UnitFileChange *changes = NULL; + unsigned n_changes = 0; + int r; + + if (install_client_side()) { + r = unit_file_preset_all(arg_scope, args_to_flags(), arg_root, arg_preset_mode, &changes, &n_changes); + unit_file_dump_changes(r, "preset", changes, n_changes, arg_quiet); + + if (r > 0) + r = 0; + } else { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + polkit_agent_open_if_enabled(); + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "PresetAllUnitFiles", + &error, + &reply, + "sbb", + unit_file_preset_mode_to_string(arg_preset_mode), + arg_runtime, + arg_force); + if (r < 0) + return log_error_errno(r, "Failed to preset all units: %s", bus_error_message(&error, r)); + + r = bus_deserialize_and_dump_unit_file_changes(reply, arg_quiet, &changes, &n_changes); + if (r < 0) + goto finish; + + if (arg_no_reload) { + r = 0; + goto finish; + } + + r = daemon_reload(argc, argv, userdata); + } + +finish: + unit_file_changes_free(changes, n_changes); + + return r; +} + +static int show_installation_targets_client_side(const char *name) { + UnitFileChange *changes = NULL; + unsigned n_changes = 0, i; + UnitFileFlags flags; + char **p; + int r; + + p = STRV_MAKE(name); + flags = UNIT_FILE_DRY_RUN | + (arg_runtime ? UNIT_FILE_RUNTIME : 0); + + r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes); + if (r < 0) + return log_error_errno(r, "Failed to get file links for %s: %m", name); + + for (i = 0; i < n_changes; i++) + if (changes[i].type == UNIT_FILE_UNLINK) + printf(" %s\n", changes[i].path); + + return 0; +} + +static int show_installation_targets(sd_bus *bus, const char *name) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + const char *link; + int r; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnitFileLinks", + &error, + &reply, + "sb", name, arg_runtime); + if (r < 0) + return log_error_errno(r, "Failed to get unit file links for %s: %s", name, bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "s", &link)) > 0) + printf(" %s\n", link); + + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + +static int unit_is_enabled(int argc, char *argv[], void *userdata) { + + _cleanup_strv_free_ char **names = NULL; + bool enabled; + char **name; + int r; + + r = mangle_names(strv_skip(argv, 1), &names); + if (r < 0) + return r; + + r = enable_sysv_units(argv[0], names); + if (r < 0) + return r; + + enabled = r > 0; + + if (install_client_side()) { + STRV_FOREACH(name, names) { + UnitFileState state; + + r = unit_file_get_state(arg_scope, arg_root, *name, &state); + if (r < 0) + return log_error_errno(state, "Failed to get unit file state for %s: %m", *name); + + if (IN_SET(state, + UNIT_FILE_ENABLED, + UNIT_FILE_ENABLED_RUNTIME, + UNIT_FILE_STATIC, + UNIT_FILE_INDIRECT, + UNIT_FILE_GENERATED)) + enabled = true; + + if (!arg_quiet) { + puts(unit_file_state_to_string(state)); + if (arg_full) { + r = show_installation_targets_client_side(*name); + if (r < 0) + return r; + } + } + } + + r = 0; + } else { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + STRV_FOREACH(name, names) { + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *s; + + r = sd_bus_call_method( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "GetUnitFileState", + &error, + &reply, + "s", *name); + if (r < 0) + return log_error_errno(r, "Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r)); + + r = sd_bus_message_read(reply, "s", &s); + if (r < 0) + return bus_log_parse_error(r); + + if (STR_IN_SET(s, "enabled", "enabled-runtime", "static", "indirect", "generated")) + enabled = true; + + if (!arg_quiet) { + puts(s); + if (arg_full) { + r = show_installation_targets(bus, *name); + if (r < 0) + return r; + } + } + } + } + + return enabled ? EXIT_SUCCESS : EXIT_FAILURE; +} + +static int is_system_running(int argc, char *argv[], void *userdata) { + _cleanup_free_ char *state = NULL; + sd_bus *bus; + int r; + + if (running_in_chroot() > 0 || (arg_transport == BUS_TRANSPORT_LOCAL && !sd_booted())) { + if (!arg_quiet) + puts("offline"); + return EXIT_FAILURE; + } + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = sd_bus_get_property_string( + bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "SystemState", + NULL, + &state); + if (r < 0) { + if (!arg_quiet) + puts("unknown"); + return 0; + } + + if (!arg_quiet) + puts(state); + + return streq(state, "running") ? EXIT_SUCCESS : EXIT_FAILURE; +} + +static int create_edit_temp_file(const char *new_path, const char *original_path, char **ret_tmp_fn) { + _cleanup_free_ char *t = NULL; + int r; + + assert(new_path); + assert(original_path); + assert(ret_tmp_fn); + + r = tempfn_random(new_path, NULL, &t); + if (r < 0) + return log_error_errno(r, "Failed to determine temporary filename for \"%s\": %m", new_path); + + r = mkdir_parents(new_path, 0755); + if (r < 0) + return log_error_errno(r, "Failed to create directories for \"%s\": %m", new_path); + + r = copy_file(original_path, t, 0, 0644, 0); + if (r == -ENOENT) { + + r = touch(t); + if (r < 0) + return log_error_errno(r, "Failed to create temporary file \"%s\": %m", t); + + } else if (r < 0) + return log_error_errno(r, "Failed to create temporary file for \"%s\": %m", new_path); + + *ret_tmp_fn = t; + t = NULL; + + return 0; +} + +static int get_file_to_edit( + const LookupPaths *paths, + const char *name, + char **ret_path) { + + _cleanup_free_ char *path = NULL, *run = NULL; + + assert(name); + assert(ret_path); + + path = strjoin(paths->persistent_config, "/", name, NULL); + if (!path) + return log_oom(); + + if (arg_runtime) { + run = strjoin(paths->runtime_config, "/", name, NULL); + if (!run) + return log_oom(); + } + + if (arg_runtime) { + if (access(path, F_OK) >= 0) { + log_error("Refusing to create \"%s\" because it would be overridden by \"%s\" anyway.", run, path); + return -EEXIST; + } + + *ret_path = run; + run = NULL; + } else { + *ret_path = path; + path = NULL; + } + + return 0; +} + +static int unit_file_create_new( + const LookupPaths *paths, + const char *unit_name, + const char *suffix, + char **ret_new_path, + char **ret_tmp_path) { + + char *tmp_new_path, *tmp_tmp_path, *ending; + int r; + + assert(unit_name); + assert(ret_new_path); + assert(ret_tmp_path); + + ending = strjoina(unit_name, suffix); + r = get_file_to_edit(paths, ending, &tmp_new_path); + if (r < 0) + return r; + + r = create_edit_temp_file(tmp_new_path, tmp_new_path, &tmp_tmp_path); + if (r < 0) { + free(tmp_new_path); + return r; + } + + *ret_new_path = tmp_new_path; + *ret_tmp_path = tmp_tmp_path; + + return 0; +} + +static int unit_file_create_copy( + const LookupPaths *paths, + const char *unit_name, + const char *fragment_path, + char **ret_new_path, + char **ret_tmp_path) { + + char *tmp_new_path, *tmp_tmp_path; + int r; + + assert(fragment_path); + assert(unit_name); + assert(ret_new_path); + assert(ret_tmp_path); + + r = get_file_to_edit(paths, unit_name, &tmp_new_path); + if (r < 0) + return r; + + if (!path_equal(fragment_path, tmp_new_path) && access(tmp_new_path, F_OK) == 0) { + char response; + + r = ask_char(&response, "yn", "\"%s\" already exists. Overwrite with \"%s\"? [(y)es, (n)o] ", tmp_new_path, fragment_path); + if (r < 0) { + free(tmp_new_path); + return r; + } + if (response != 'y') { + log_warning("%s ignored", unit_name); + free(tmp_new_path); + return -EKEYREJECTED; + } + } + + r = create_edit_temp_file(tmp_new_path, fragment_path, &tmp_tmp_path); + if (r < 0) { + free(tmp_new_path); + return r; + } + + *ret_new_path = tmp_new_path; + *ret_tmp_path = tmp_tmp_path; + + return 0; +} + +static int run_editor(char **paths) { + pid_t pid; + int r; + + assert(paths); + + pid = fork(); + if (pid < 0) + return log_error_errno(errno, "Failed to fork: %m"); + + if (pid == 0) { + const char **args; + char *editor, **editor_args = NULL; + char **tmp_path, **original_path, *p; + unsigned n_editor_args = 0, i = 1; + size_t argc; + + (void) reset_all_signal_handlers(); + (void) reset_signal_mask(); + + argc = strv_length(paths)/2 + 1; + + /* SYSTEMD_EDITOR takes precedence over EDITOR which takes precedence over VISUAL + * If neither SYSTEMD_EDITOR nor EDITOR nor VISUAL are present, + * we try to execute well known editors + */ + editor = getenv("SYSTEMD_EDITOR"); + if (!editor) + editor = getenv("EDITOR"); + if (!editor) + editor = getenv("VISUAL"); + + if (!isempty(editor)) { + editor_args = strv_split(editor, WHITESPACE); + if (!editor_args) { + (void) log_oom(); + _exit(EXIT_FAILURE); + } + n_editor_args = strv_length(editor_args); + argc += n_editor_args - 1; + } + args = newa(const char*, argc + 1); + + if (n_editor_args > 0) { + args[0] = editor_args[0]; + for (; i < n_editor_args; i++) + args[i] = editor_args[i]; + } + + STRV_FOREACH_PAIR(original_path, tmp_path, paths) { + args[i] = *tmp_path; + i++; + } + args[i] = NULL; + + if (n_editor_args > 0) + execvp(args[0], (char* const*) args); + + FOREACH_STRING(p, "editor", "nano", "vim", "vi") { + args[0] = p; + execvp(p, (char* const*) args); + /* We do not fail if the editor doesn't exist + * because we want to try each one of them before + * failing. + */ + if (errno != ENOENT) { + log_error_errno(errno, "Failed to execute %s: %m", editor); + _exit(EXIT_FAILURE); + } + } + + log_error("Cannot edit unit(s), no editor available. Please set either $SYSTEMD_EDITOR, $EDITOR or $VISUAL."); + _exit(EXIT_FAILURE); + } + + r = wait_for_terminate_and_warn("editor", pid, true); + if (r < 0) + return log_error_errno(r, "Failed to wait for child: %m"); + + return 0; +} + +static int find_paths_to_edit(sd_bus *bus, char **names, char ***paths) { + _cleanup_lookup_paths_free_ LookupPaths lp = {}; + char **name; + int r; + + assert(names); + assert(paths); + + r = lookup_paths_init(&lp, arg_scope, 0, arg_root); + if (r < 0) + return r; + + STRV_FOREACH(name, names) { + _cleanup_free_ char *path = NULL, *new_path = NULL, *tmp_path = NULL; + + r = unit_find_paths(bus, *name, &lp, &path, NULL); + if (r < 0) + return r; + else if (!arg_force) { + if (r == 0) { + log_error("Run 'systemctl edit --force %s' to create a new unit.", *name); + return -ENOENT; + } else if (!path) { + // FIXME: support units with path==NULL (no FragmentPath) + log_error("No fragment exists for %s.", *name); + return -ENOENT; + } + } + + if (path) { + if (arg_full) + r = unit_file_create_copy(&lp, *name, path, &new_path, &tmp_path); + else + r = unit_file_create_new(&lp, *name, ".d/override.conf", &new_path, &tmp_path); + } else + r = unit_file_create_new(&lp, *name, NULL, &new_path, &tmp_path); + if (r < 0) + return r; + + r = strv_push_pair(paths, new_path, tmp_path); + if (r < 0) + return log_oom(); + new_path = tmp_path = NULL; + } + + return 0; +} + +static int edit(int argc, char *argv[], void *userdata) { + _cleanup_strv_free_ char **names = NULL; + _cleanup_strv_free_ char **paths = NULL; + char **original, **tmp; + sd_bus *bus; + int r; + + if (!on_tty()) { + log_error("Cannot edit units if not on a tty."); + return -EINVAL; + } + + if (arg_transport != BUS_TRANSPORT_LOCAL) { + log_error("Cannot edit units remotely."); + return -EINVAL; + } + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = expand_names(bus, strv_skip(argv, 1), NULL, &names); + if (r < 0) + return log_error_errno(r, "Failed to expand names: %m"); + + r = find_paths_to_edit(bus, names, &paths); + if (r < 0) + return r; + + if (strv_isempty(paths)) + return -ENOENT; + + r = run_editor(paths); + if (r < 0) + goto end; + + STRV_FOREACH_PAIR(original, tmp, paths) { + /* If the temporary file is empty we ignore it. It's + * useful if the user wants to cancel its modification + */ + if (null_or_empty_path(*tmp)) { + log_warning("Editing \"%s\" canceled: temporary file is empty.", *original); + continue; + } + + r = rename(*tmp, *original); + if (r < 0) { + r = log_error_errno(errno, "Failed to rename \"%s\" to \"%s\": %m", *tmp, *original); + goto end; + } + } + + r = 0; + + if (!arg_no_reload && !install_client_side()) + r = daemon_reload(argc, argv, userdata); + +end: + STRV_FOREACH_PAIR(original, tmp, paths) { + (void) unlink(*tmp); + + /* Removing empty dropin dirs */ + if (!arg_full) { + _cleanup_free_ char *dir; + + dir = dirname_malloc(*original); + if (!dir) + return log_oom(); + + /* no need to check if the dir is empty, rmdir + * does nothing if it is not the case. + */ + (void) rmdir(dir); + } + } + + return r; +} + +static void systemctl_help(void) { + + pager_open(arg_no_pager, false); + + printf("%s [OPTIONS...] {COMMAND} ...\n\n" + "Query or send control commands to the systemd manager.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --system Connect to system manager\n" + " --user Connect to user service manager\n" + " -H --host=[USER@]HOST\n" + " Operate on remote host\n" + " -M --machine=CONTAINER\n" + " Operate on local container\n" + " -t --type=TYPE List units of a particular type\n" + " --state=STATE List units with particular LOAD or SUB or ACTIVE state\n" + " -p --property=NAME Show only properties by this name\n" + " -a --all Show all properties/all units currently in memory,\n" + " including dead/empty ones. To list all units installed on\n" + " the system, use the 'list-unit-files' command instead.\n" + " -l --full Don't ellipsize unit names on output\n" + " -r --recursive Show unit list of host and local containers\n" + " --reverse Show reverse dependencies with 'list-dependencies'\n" + " --job-mode=MODE Specify how to deal with already queued jobs, when\n" + " queueing a new job\n" + " --show-types When showing sockets, explicitly show their type\n" + " --value When showing properties, only print the value\n" + " -i --ignore-inhibitors\n" + " When shutting down or sleeping, ignore inhibitors\n" + " --kill-who=WHO Who to send signal to\n" + " -s --signal=SIGNAL Which signal to send\n" + " --now Start or stop unit in addition to enabling or disabling it\n" + " -q --quiet Suppress output\n" + " --wait For (re)start, wait until service stopped again\n" + " --no-block Do not wait until operation finished\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n" + " --no-reload Don't reload daemon after en-/dis-abling unit files\n" + " --no-legend Do not print a legend (column headers and hints)\n" + " --no-pager Do not pipe output into a pager\n" + " --no-ask-password\n" + " Do not ask for system passwords\n" + " --global Enable/disable unit files globally\n" + " --runtime Enable unit files only temporarily until next reboot\n" + " -f --force When enabling unit files, override existing symlinks\n" + " When shutting down, execute action immediately\n" + " --preset-mode= Apply only enable, only disable, or all presets\n" + " --root=PATH Enable unit files in the specified root directory\n" + " -n --lines=INTEGER Number of journal entries to show\n" + " -o --output=STRING Change journal output mode (short, short-precise,\n" + " short-iso, short-full, short-monotonic, short-unix,\n" + " verbose, export, json, json-pretty, json-sse, cat)\n" + " --firmware-setup Tell the firmware to show the setup menu on next boot\n" + " --plain Print unit dependencies as a list instead of a tree\n\n" + "Unit Commands:\n" + " list-units [PATTERN...] List units currently in memory\n" + " list-sockets [PATTERN...] List socket units currently in memory, ordered\n" + " by address\n" + " list-timers [PATTERN...] List timer units currently in memory, ordered\n" + " by next elapse\n" + " start NAME... Start (activate) one or more units\n" + " stop NAME... Stop (deactivate) one or more units\n" + " reload NAME... Reload one or more units\n" + " restart NAME... Start or restart one or more units\n" + " try-restart NAME... Restart one or more units if active\n" + " reload-or-restart NAME... Reload one or more units if possible,\n" + " otherwise start or restart\n" + " try-reload-or-restart NAME... If active, reload one or more units,\n" + " if supported, otherwise restart\n" + " isolate NAME Start one unit and stop all others\n" + " kill NAME... Send signal to processes of a unit\n" + " is-active PATTERN... Check whether units are active\n" + " is-failed PATTERN... Check whether units are failed\n" + " status [PATTERN...|PID...] Show runtime status of one or more units\n" + " show [PATTERN...|JOB...] Show properties of one or more\n" + " units/jobs or the manager\n" + " cat PATTERN... Show files and drop-ins of one or more units\n" + " set-property NAME ASSIGNMENT... Sets one or more properties of a unit\n" + " help PATTERN...|PID... Show manual for one or more units\n" + " reset-failed [PATTERN...] Reset failed state for all, one, or more\n" + " units\n" + " list-dependencies [NAME] Recursively show units which are required\n" + " or wanted by this unit or by which this\n" + " unit is required or wanted\n\n" + "Unit File Commands:\n" + " list-unit-files [PATTERN...] List installed unit files\n" + " enable [NAME...|PATH...] Enable one or more unit files\n" + " disable NAME... Disable one or more unit files\n" + " reenable NAME... Reenable one or more unit files\n" + " preset NAME... Enable/disable one or more unit files\n" + " based on preset configuration\n" + " preset-all Enable/disable all unit files based on\n" + " preset configuration\n" + " is-enabled NAME... Check whether unit files are enabled\n" + " mask NAME... Mask one or more units\n" + " unmask NAME... Unmask one or more units\n" + " link PATH... Link one or more units files into\n" + " the search path\n" + " revert NAME... Revert one or more unit files to vendor\n" + " version\n" + " add-wants TARGET NAME... Add 'Wants' dependency for the target\n" + " on specified one or more units\n" + " add-requires TARGET NAME... Add 'Requires' dependency for the target\n" + " on specified one or more units\n" + " edit NAME... Edit one or more unit files\n" + " get-default Get the name of the default target\n" + " set-default NAME Set the default target\n\n" + "Machine Commands:\n" + " list-machines [PATTERN...] List local containers and host\n\n" + "Job Commands:\n" + " list-jobs [PATTERN...] List jobs\n" + " cancel [JOB...] Cancel all, one, or more jobs\n\n" + "Environment Commands:\n" + " show-environment Dump environment\n" + " set-environment NAME=VALUE... Set one or more environment variables\n" + " unset-environment NAME... Unset one or more environment variables\n" + " import-environment [NAME...] Import all or some environment variables\n\n" + "Manager Lifecycle Commands:\n" + " daemon-reload Reload systemd manager configuration\n" + " daemon-reexec Reexecute systemd manager\n\n" + "System Commands:\n" + " is-system-running Check whether system is fully running\n" + " default Enter system default mode\n" + " rescue Enter system rescue mode\n" + " emergency Enter system emergency mode\n" + " halt Shut down and halt the system\n" + " poweroff Shut down and power-off the system\n" + " reboot [ARG] Shut down and reboot the system\n" + " kexec Shut down and reboot the system with kexec\n" + " exit [EXIT_CODE] Request user instance or container exit\n" + " switch-root ROOT [INIT] Change to a different root file system\n" + " suspend Suspend the system\n" + " hibernate Hibernate the system\n" + " hybrid-sleep Hibernate and suspend the system\n", + program_invocation_short_name); +} + +static void halt_help(void) { + printf("%s [OPTIONS...]%s\n\n" + "%s the system.\n\n" + " --help Show this help\n" + " --halt Halt the machine\n" + " -p --poweroff Switch off the machine\n" + " --reboot Reboot the machine\n" + " -f --force Force immediate halt/power-off/reboot\n" + " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n" + " -d --no-wtmp Don't write wtmp record\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n", + program_invocation_short_name, + arg_action == ACTION_REBOOT ? " [ARG]" : "", + arg_action == ACTION_REBOOT ? "Reboot" : + arg_action == ACTION_POWEROFF ? "Power off" : + "Halt"); +} + +static void shutdown_help(void) { + printf("%s [OPTIONS...] [TIME] [WALL...]\n\n" + "Shut down the system.\n\n" + " --help Show this help\n" + " -H --halt Halt the machine\n" + " -P --poweroff Power-off the machine\n" + " -r --reboot Reboot the machine\n" + " -h Equivalent to --poweroff, overridden by --halt\n" + " -k Don't halt/power-off/reboot, just send warnings\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n" + " -c Cancel a pending shutdown\n", + program_invocation_short_name); +} + +static void telinit_help(void) { + printf("%s [OPTIONS...] {COMMAND}\n\n" + "Send control commands to the init daemon.\n\n" + " --help Show this help\n" + " --no-wall Don't send wall message before halt/power-off/reboot\n\n" + "Commands:\n" + " 0 Power-off the machine\n" + " 6 Reboot the machine\n" + " 2, 3, 4, 5 Start runlevelX.target unit\n" + " 1, s, S Enter rescue mode\n" + " q, Q Reload init daemon configuration\n" + " u, U Reexecute init daemon\n", + program_invocation_short_name); +} + +static void runlevel_help(void) { + printf("%s [OPTIONS...]\n\n" + "Prints the previous and current runlevel of the init system.\n\n" + " --help Show this help\n", + program_invocation_short_name); +} + +static void help_types(void) { + int i; + + if (!arg_no_legend) + puts("Available unit types:"); + for (i = 0; i < _UNIT_TYPE_MAX; i++) + puts(unit_type_to_string(i)); +} + +static void help_states(void) { + int i; + + if (!arg_no_legend) + puts("Available unit load states:"); + for (i = 0; i < _UNIT_LOAD_STATE_MAX; i++) + puts(unit_load_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable unit active states:"); + for (i = 0; i < _UNIT_ACTIVE_STATE_MAX; i++) + puts(unit_active_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable automount unit substates:"); + for (i = 0; i < _AUTOMOUNT_STATE_MAX; i++) + puts(automount_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable busname unit substates:"); + for (i = 0; i < _BUSNAME_STATE_MAX; i++) + puts(busname_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable device unit substates:"); + for (i = 0; i < _DEVICE_STATE_MAX; i++) + puts(device_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable mount unit substates:"); + for (i = 0; i < _MOUNT_STATE_MAX; i++) + puts(mount_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable path unit substates:"); + for (i = 0; i < _PATH_STATE_MAX; i++) + puts(path_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable scope unit substates:"); + for (i = 0; i < _SCOPE_STATE_MAX; i++) + puts(scope_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable service unit substates:"); + for (i = 0; i < _SERVICE_STATE_MAX; i++) + puts(service_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable slice unit substates:"); + for (i = 0; i < _SLICE_STATE_MAX; i++) + puts(slice_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable socket unit substates:"); + for (i = 0; i < _SOCKET_STATE_MAX; i++) + puts(socket_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable swap unit substates:"); + for (i = 0; i < _SWAP_STATE_MAX; i++) + puts(swap_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable target unit substates:"); + for (i = 0; i < _TARGET_STATE_MAX; i++) + puts(target_state_to_string(i)); + + if (!arg_no_legend) + puts("\nAvailable timer unit substates:"); + for (i = 0; i < _TIMER_STATE_MAX; i++) + puts(timer_state_to_string(i)); +} + +static int systemctl_parse_argv(int argc, char *argv[]) { + + enum { + ARG_FAIL = 0x100, + ARG_REVERSE, + ARG_AFTER, + ARG_BEFORE, + ARG_SHOW_TYPES, + ARG_IRREVERSIBLE, + ARG_IGNORE_DEPENDENCIES, + ARG_VALUE, + ARG_VERSION, + ARG_USER, + ARG_SYSTEM, + ARG_GLOBAL, + ARG_NO_BLOCK, + ARG_NO_LEGEND, + ARG_NO_PAGER, + ARG_NO_WALL, + ARG_ROOT, + ARG_NO_RELOAD, + ARG_KILL_WHO, + ARG_NO_ASK_PASSWORD, + ARG_FAILED, + ARG_RUNTIME, + ARG_FORCE, + ARG_PLAIN, + ARG_STATE, + ARG_JOB_MODE, + ARG_PRESET_MODE, + ARG_FIRMWARE_SETUP, + ARG_NOW, + ARG_MESSAGE, + ARG_WAIT, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "type", required_argument, NULL, 't' }, + { "property", required_argument, NULL, 'p' }, + { "all", no_argument, NULL, 'a' }, + { "reverse", no_argument, NULL, ARG_REVERSE }, + { "after", no_argument, NULL, ARG_AFTER }, + { "before", no_argument, NULL, ARG_BEFORE }, + { "show-types", no_argument, NULL, ARG_SHOW_TYPES }, + { "failed", no_argument, NULL, ARG_FAILED }, /* compatibility only */ + { "full", no_argument, NULL, 'l' }, + { "job-mode", required_argument, NULL, ARG_JOB_MODE }, + { "fail", no_argument, NULL, ARG_FAIL }, /* compatibility only */ + { "irreversible", no_argument, NULL, ARG_IRREVERSIBLE }, /* compatibility only */ + { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */ + { "ignore-inhibitors", no_argument, NULL, 'i' }, + { "value", no_argument, NULL, ARG_VALUE }, + { "user", no_argument, NULL, ARG_USER }, + { "system", no_argument, NULL, ARG_SYSTEM }, + { "global", no_argument, NULL, ARG_GLOBAL }, + { "wait", no_argument, NULL, ARG_WAIT }, + { "no-block", no_argument, NULL, ARG_NO_BLOCK }, + { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, + { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + { "quiet", no_argument, NULL, 'q' }, + { "root", required_argument, NULL, ARG_ROOT }, + { "force", no_argument, NULL, ARG_FORCE }, + { "no-reload", no_argument, NULL, ARG_NO_RELOAD }, + { "kill-who", required_argument, NULL, ARG_KILL_WHO }, + { "signal", required_argument, NULL, 's' }, + { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, + { "host", required_argument, NULL, 'H' }, + { "machine", required_argument, NULL, 'M' }, + { "runtime", no_argument, NULL, ARG_RUNTIME }, + { "lines", required_argument, NULL, 'n' }, + { "output", required_argument, NULL, 'o' }, + { "plain", no_argument, NULL, ARG_PLAIN }, + { "state", required_argument, NULL, ARG_STATE }, + { "recursive", no_argument, NULL, 'r' }, + { "preset-mode", required_argument, NULL, ARG_PRESET_MODE }, + { "firmware-setup", no_argument, NULL, ARG_FIRMWARE_SETUP }, + { "now", no_argument, NULL, ARG_NOW }, + { "message", required_argument, NULL, ARG_MESSAGE }, + {} + }; + + const char *p; + int c, r; + + assert(argc >= 0); + assert(argv); + + /* we default to allowing interactive authorization only in systemctl (not in the legacy commands) */ + arg_ask_password = true; + + while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:ir", options, NULL)) >= 0) + + switch (c) { + + case 'h': + systemctl_help(); + return 0; + + case ARG_VERSION: + return version(); + + case 't': { + if (isempty(optarg)) { + log_error("--type requires arguments."); + return -EINVAL; + } + + p = optarg; + for (;;) { + _cleanup_free_ char *type = NULL; + + r = extract_first_word(&p, &type, ",", 0); + if (r < 0) + return log_error_errno(r, "Failed to parse type: %s", optarg); + + if (r == 0) + break; + + if (streq(type, "help")) { + help_types(); + return 0; + } + + if (unit_type_from_string(type) >= 0) { + if (strv_push(&arg_types, type) < 0) + return log_oom(); + type = NULL; + continue; + } + + /* It's much nicer to use --state= for + * load states, but let's support this + * in --types= too for compatibility + * with old versions */ + if (unit_load_state_from_string(type) >= 0) { + if (strv_push(&arg_states, type) < 0) + return log_oom(); + type = NULL; + continue; + } + + log_error("Unknown unit type or load state '%s'.", type); + log_info("Use -t help to see a list of allowed values."); + return -EINVAL; + } + + break; + } + + case 'p': { + /* Make sure that if the empty property list + was specified, we won't show any properties. */ + if (isempty(optarg) && !arg_properties) { + arg_properties = new0(char*, 1); + if (!arg_properties) + return log_oom(); + } else { + p = optarg; + for (;;) { + _cleanup_free_ char *prop = NULL; + + r = extract_first_word(&p, &prop, ",", 0); + if (r < 0) + return log_error_errno(r, "Failed to parse property: %s", optarg); + + if (r == 0) + break; + + if (strv_push(&arg_properties, prop) < 0) + return log_oom(); + + prop = NULL; + } + } + + /* If the user asked for a particular + * property, show it to him, even if it is + * empty. */ + arg_all = true; + + break; + } + + case 'a': + arg_all = true; + break; + + case ARG_REVERSE: + arg_dependency = DEPENDENCY_REVERSE; + break; + + case ARG_AFTER: + arg_dependency = DEPENDENCY_AFTER; + break; + + case ARG_BEFORE: + arg_dependency = DEPENDENCY_BEFORE; + break; + + case ARG_SHOW_TYPES: + arg_show_types = true; + break; + + case ARG_VALUE: + arg_value = true; + break; + + case ARG_JOB_MODE: + arg_job_mode = optarg; + break; + + case ARG_FAIL: + arg_job_mode = "fail"; + break; + + case ARG_IRREVERSIBLE: + arg_job_mode = "replace-irreversibly"; + break; + + case ARG_IGNORE_DEPENDENCIES: + arg_job_mode = "ignore-dependencies"; + break; + + case ARG_USER: + arg_scope = UNIT_FILE_USER; + break; + + case ARG_SYSTEM: + arg_scope = UNIT_FILE_SYSTEM; + break; + + case ARG_GLOBAL: + arg_scope = UNIT_FILE_GLOBAL; + break; + + case ARG_WAIT: + arg_wait = true; + break; + + case ARG_NO_BLOCK: + arg_no_block = true; + break; + + case ARG_NO_LEGEND: + arg_no_legend = true; + break; + + case ARG_NO_PAGER: + arg_no_pager = true; + break; + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case ARG_ROOT: + r = parse_path_argument_and_warn(optarg, false, &arg_root); + if (r < 0) + return r; + break; + + case 'l': + arg_full = true; + break; + + case ARG_FAILED: + if (strv_extend(&arg_states, "failed") < 0) + return log_oom(); + + break; + + case 'q': + arg_quiet = true; + break; + + case ARG_FORCE: + arg_force++; + break; + + case 'f': + arg_force++; + break; + + case ARG_NO_RELOAD: + arg_no_reload = true; + break; + + case ARG_KILL_WHO: + arg_kill_who = optarg; + break; + + case 's': + arg_signal = signal_from_string_try_harder(optarg); + if (arg_signal < 0) { + log_error("Failed to parse signal string %s.", optarg); + return -EINVAL; + } + break; + + case ARG_NO_ASK_PASSWORD: + arg_ask_password = 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_RUNTIME: + arg_runtime = true; + break; + + case 'n': + if (safe_atou(optarg, &arg_lines) < 0) { + log_error("Failed to parse lines '%s'", optarg); + return -EINVAL; + } + break; + + case 'o': + arg_output = output_mode_from_string(optarg); + if (arg_output < 0) { + log_error("Unknown output '%s'.", optarg); + return -EINVAL; + } + break; + + case 'i': + arg_ignore_inhibitors = true; + break; + + case ARG_PLAIN: + arg_plain = true; + break; + + case ARG_FIRMWARE_SETUP: + arg_firmware_setup = true; + break; + + case ARG_STATE: { + if (isempty(optarg)) { + log_error("--signal requires arguments."); + return -EINVAL; + } + + p = optarg; + for (;;) { + _cleanup_free_ char *s = NULL; + + r = extract_first_word(&p, &s, ",", 0); + if (r < 0) + return log_error_errno(r, "Failed to parse signal: %s", optarg); + + if (r == 0) + break; + + if (streq(s, "help")) { + help_states(); + return 0; + } + + if (strv_push(&arg_states, s) < 0) + return log_oom(); + + s = NULL; + } + break; + } + + case 'r': + if (geteuid() != 0) { + log_error("--recursive requires root privileges."); + return -EPERM; + } + + arg_recursive = true; + break; + + case ARG_PRESET_MODE: + + arg_preset_mode = unit_file_preset_mode_from_string(optarg); + if (arg_preset_mode < 0) { + log_error("Failed to parse preset mode: %s.", optarg); + return -EINVAL; + } + + break; + + case ARG_NOW: + arg_now = true; + break; + + case ARG_MESSAGE: + if (strv_extend(&arg_wall, optarg) < 0) + return log_oom(); + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) { + log_error("Cannot access user instance remotely."); + return -EINVAL; + } + + if (arg_wait && arg_no_block) { + log_error("--wait may not be combined with --no-block."); + return -EINVAL; + } + + return 1; +} + +static int halt_parse_argv(int argc, char *argv[]) { + + enum { + ARG_HELP = 0x100, + ARG_HALT, + ARG_REBOOT, + ARG_NO_WALL + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + { "halt", no_argument, NULL, ARG_HALT }, + { "poweroff", no_argument, NULL, 'p' }, + { "reboot", no_argument, NULL, ARG_REBOOT }, + { "force", no_argument, NULL, 'f' }, + { "wtmp-only", no_argument, NULL, 'w' }, + { "no-wtmp", no_argument, NULL, 'd' }, + { "no-sync", no_argument, NULL, 'n' }, + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + {} + }; + + int c, r, runlevel; + + assert(argc >= 0); + assert(argv); + + if (utmp_get_runlevel(&runlevel, NULL) >= 0) + if (runlevel == '0' || runlevel == '6') + arg_force = 2; + + while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + halt_help(); + return 0; + + case ARG_HALT: + arg_action = ACTION_HALT; + break; + + case 'p': + if (arg_action != ACTION_REBOOT) + arg_action = ACTION_POWEROFF; + break; + + case ARG_REBOOT: + arg_action = ACTION_REBOOT; + break; + + case 'f': + arg_force = 2; + break; + + case 'w': + arg_dry = true; + break; + + case 'd': + arg_no_wtmp = true; + break; + + case 'n': + arg_no_sync = true; + break; + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case 'i': + case 'h': + /* Compatibility nops */ + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (arg_action == ACTION_REBOOT && (argc == optind || argc == optind + 1)) { + r = update_reboot_parameter_and_warn(argc == optind + 1 ? argv[optind] : NULL); + if (r < 0) + return r; + } else if (optind < argc) { + log_error("Too many arguments."); + return -EINVAL; + } + + return 1; +} + +static int parse_shutdown_time_spec(const char *t, usec_t *_u) { + assert(t); + assert(_u); + + if (streq(t, "now")) + *_u = 0; + else if (!strchr(t, ':')) { + uint64_t u; + + if (safe_atou64(t, &u) < 0) + return -EINVAL; + + *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u; + } else { + char *e = NULL; + long hour, minute; + struct tm tm = {}; + time_t s; + usec_t n; + + errno = 0; + hour = strtol(t, &e, 10); + if (errno > 0 || *e != ':' || hour < 0 || hour > 23) + return -EINVAL; + + minute = strtol(e+1, &e, 10); + if (errno > 0 || *e != 0 || minute < 0 || minute > 59) + return -EINVAL; + + n = now(CLOCK_REALTIME); + s = (time_t) (n / USEC_PER_SEC); + + assert_se(localtime_r(&s, &tm)); + + tm.tm_hour = (int) hour; + tm.tm_min = (int) minute; + tm.tm_sec = 0; + + assert_se(s = mktime(&tm)); + + *_u = (usec_t) s * USEC_PER_SEC; + + while (*_u <= n) + *_u += USEC_PER_DAY; + } + + return 0; +} + +static int shutdown_parse_argv(int argc, char *argv[]) { + + enum { + ARG_HELP = 0x100, + ARG_NO_WALL + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + { "halt", no_argument, NULL, 'H' }, + { "poweroff", no_argument, NULL, 'P' }, + { "reboot", no_argument, NULL, 'r' }, + { "kexec", no_argument, NULL, 'K' }, /* not documented extension */ + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + {} + }; + + char **wall = NULL; + int c, r; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "HPrhkKtafFc", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + shutdown_help(); + return 0; + + case 'H': + arg_action = ACTION_HALT; + break; + + case 'P': + arg_action = ACTION_POWEROFF; + break; + + case 'r': + if (kexec_loaded()) + arg_action = ACTION_KEXEC; + else + arg_action = ACTION_REBOOT; + break; + + case 'K': + arg_action = ACTION_KEXEC; + break; + + case 'h': + if (arg_action != ACTION_HALT) + arg_action = ACTION_POWEROFF; + break; + + case 'k': + arg_dry = true; + break; + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case 't': + case 'a': + case 'f': + case 'F': + /* Compatibility nops */ + break; + + case 'c': + arg_action = ACTION_CANCEL_SHUTDOWN; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) { + r = parse_shutdown_time_spec(argv[optind], &arg_when); + if (r < 0) { + log_error("Failed to parse time specification: %s", argv[optind]); + return r; + } + } else + arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE; + + if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN) + /* No time argument for shutdown cancel */ + wall = argv + optind; + else if (argc > optind + 1) + /* We skip the time argument */ + wall = argv + optind + 1; + + if (wall) { + arg_wall = strv_copy(wall); + if (!arg_wall) + return log_oom(); + } + + optind = argc; + + return 1; +} + +static int telinit_parse_argv(int argc, char *argv[]) { + + enum { + ARG_HELP = 0x100, + ARG_NO_WALL + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + { "no-wall", no_argument, NULL, ARG_NO_WALL }, + {} + }; + + static const struct { + char from; + enum action to; + } table[] = { + { '0', ACTION_POWEROFF }, + { '6', ACTION_REBOOT }, + { '1', ACTION_RESCUE }, + { '2', ACTION_RUNLEVEL2 }, + { '3', ACTION_RUNLEVEL3 }, + { '4', ACTION_RUNLEVEL4 }, + { '5', ACTION_RUNLEVEL5 }, + { 's', ACTION_RESCUE }, + { 'S', ACTION_RESCUE }, + { 'q', ACTION_RELOAD }, + { 'Q', ACTION_RELOAD }, + { 'u', ACTION_REEXEC }, + { 'U', ACTION_REEXEC } + }; + + unsigned i; + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + telinit_help(); + return 0; + + case ARG_NO_WALL: + arg_no_wall = true; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (optind >= argc) { + log_error("%s: required argument missing.", program_invocation_short_name); + return -EINVAL; + } + + if (optind + 1 < argc) { + log_error("Too many arguments."); + return -EINVAL; + } + + if (strlen(argv[optind]) != 1) { + log_error("Expected single character argument."); + return -EINVAL; + } + + for (i = 0; i < ELEMENTSOF(table); i++) + if (table[i].from == argv[optind][0]) + break; + + if (i >= ELEMENTSOF(table)) { + log_error("Unknown command '%s'.", argv[optind]); + return -EINVAL; + } + + arg_action = table[i].to; + + optind++; + + return 1; +} + +static int runlevel_parse_argv(int argc, char *argv[]) { + + enum { + ARG_HELP = 0x100, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, ARG_HELP }, + {} + }; + + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) + switch (c) { + + case ARG_HELP: + runlevel_help(); + return 0; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + if (optind < argc) { + log_error("Too many arguments."); + return -EINVAL; + } + + return 1; +} + +static int parse_argv(int argc, char *argv[]) { + assert(argc >= 0); + assert(argv); + + if (program_invocation_short_name) { + + if (strstr(program_invocation_short_name, "halt")) { + arg_action = ACTION_HALT; + return halt_parse_argv(argc, argv); + } else if (strstr(program_invocation_short_name, "poweroff")) { + arg_action = ACTION_POWEROFF; + return halt_parse_argv(argc, argv); + } else if (strstr(program_invocation_short_name, "reboot")) { + if (kexec_loaded()) + arg_action = ACTION_KEXEC; + else + arg_action = ACTION_REBOOT; + return halt_parse_argv(argc, argv); + } else if (strstr(program_invocation_short_name, "shutdown")) { + arg_action = ACTION_POWEROFF; + return shutdown_parse_argv(argc, argv); + } else if (strstr(program_invocation_short_name, "init")) { + + if (sd_booted() > 0) { + arg_action = _ACTION_INVALID; + return telinit_parse_argv(argc, argv); + } else { + /* Hmm, so some other init system is + * running, we need to forward this + * request to it. For now we simply + * guess that it is Upstart. */ + + execv(TELINIT, argv); + + log_error("Couldn't find an alternative telinit implementation to spawn."); + return -EIO; + } + + } else if (strstr(program_invocation_short_name, "runlevel")) { + arg_action = ACTION_RUNLEVEL; + return runlevel_parse_argv(argc, argv); + } + } + + arg_action = ACTION_SYSTEMCTL; + return systemctl_parse_argv(argc, argv); +} + +#ifdef HAVE_SYSV_COMPAT +_pure_ static int action_to_runlevel(void) { + + static const char table[_ACTION_MAX] = { + [ACTION_HALT] = '0', + [ACTION_POWEROFF] = '0', + [ACTION_REBOOT] = '6', + [ACTION_RUNLEVEL2] = '2', + [ACTION_RUNLEVEL3] = '3', + [ACTION_RUNLEVEL4] = '4', + [ACTION_RUNLEVEL5] = '5', + [ACTION_RESCUE] = '1' + }; + + assert(arg_action < _ACTION_MAX); + + return table[arg_action]; +} +#endif + +static int talk_initctl(void) { +#ifdef HAVE_SYSV_COMPAT + struct init_request request = { + .magic = INIT_MAGIC, + .sleeptime = 0, + .cmd = INIT_CMD_RUNLVL + }; + + _cleanup_close_ int fd = -1; + char rl; + int r; + + rl = action_to_runlevel(); + if (!rl) + return 0; + + request.runlevel = rl; + + fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY); + if (fd < 0) { + if (errno == ENOENT) + return 0; + + return log_error_errno(errno, "Failed to open "INIT_FIFO": %m"); + } + + r = loop_write(fd, &request, sizeof(request), false); + if (r < 0) + return log_error_errno(r, "Failed to write to "INIT_FIFO": %m"); + + return 1; +#else + return 0; +#endif +} + +static int systemctl_main(int argc, char *argv[]) { + + static const Verb verbs[] = { + { "list-units", VERB_ANY, VERB_ANY, VERB_DEFAULT|VERB_NOCHROOT, list_units }, + { "list-unit-files", VERB_ANY, VERB_ANY, 0, list_unit_files }, + { "list-sockets", VERB_ANY, VERB_ANY, VERB_NOCHROOT, list_sockets }, + { "list-timers", VERB_ANY, VERB_ANY, VERB_NOCHROOT, list_timers }, + { "list-jobs", VERB_ANY, VERB_ANY, VERB_NOCHROOT, list_jobs }, + { "list-machines", VERB_ANY, VERB_ANY, VERB_NOCHROOT, list_machines }, + { "clear-jobs", VERB_ANY, 1, VERB_NOCHROOT, trivial_method }, + { "cancel", VERB_ANY, VERB_ANY, VERB_NOCHROOT, cancel_job }, + { "start", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, + { "stop", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, + { "condstop", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, /* For compatibility with ALTLinux */ + { "reload", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, + { "restart", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, + { "try-restart", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, + { "reload-or-restart", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, + { "reload-or-try-restart", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, /* For compatbility with old systemctl <= 228 */ + { "try-reload-or-restart", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, + { "force-reload", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, /* For compatibility with SysV */ + { "condreload", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, /* For compatibility with ALTLinux */ + { "condrestart", 2, VERB_ANY, VERB_NOCHROOT, start_unit }, /* For compatibility with RH */ + { "isolate", 2, 2, VERB_NOCHROOT, start_unit }, + { "kill", 2, VERB_ANY, VERB_NOCHROOT, kill_unit }, + { "is-active", 2, VERB_ANY, VERB_NOCHROOT, check_unit_active }, + { "check", 2, VERB_ANY, VERB_NOCHROOT, check_unit_active }, + { "is-failed", 2, VERB_ANY, VERB_NOCHROOT, check_unit_failed }, + { "show", VERB_ANY, VERB_ANY, VERB_NOCHROOT, show }, + { "cat", 2, VERB_ANY, VERB_NOCHROOT, cat }, + { "status", VERB_ANY, VERB_ANY, VERB_NOCHROOT, show }, + { "help", VERB_ANY, VERB_ANY, VERB_NOCHROOT, show }, + { "daemon-reload", VERB_ANY, 1, VERB_NOCHROOT, daemon_reload }, + { "daemon-reexec", VERB_ANY, 1, VERB_NOCHROOT, daemon_reload }, + { "show-environment", VERB_ANY, 1, VERB_NOCHROOT, show_environment }, + { "set-environment", 2, VERB_ANY, VERB_NOCHROOT, set_environment }, + { "unset-environment", 2, VERB_ANY, VERB_NOCHROOT, set_environment }, + { "import-environment", VERB_ANY, VERB_ANY, VERB_NOCHROOT, import_environment }, + { "halt", VERB_ANY, 1, VERB_NOCHROOT, start_system_special }, + { "poweroff", VERB_ANY, 1, VERB_NOCHROOT, start_system_special }, + { "reboot", VERB_ANY, 2, VERB_NOCHROOT, start_system_special }, + { "kexec", VERB_ANY, 1, VERB_NOCHROOT, start_system_special }, + { "suspend", VERB_ANY, 1, VERB_NOCHROOT, start_system_special }, + { "hibernate", VERB_ANY, 1, VERB_NOCHROOT, start_system_special }, + { "hybrid-sleep", VERB_ANY, 1, VERB_NOCHROOT, start_system_special }, + { "default", VERB_ANY, 1, VERB_NOCHROOT, start_special }, + { "rescue", VERB_ANY, 1, VERB_NOCHROOT, start_system_special }, + { "emergency", VERB_ANY, 1, VERB_NOCHROOT, start_system_special }, + { "exit", VERB_ANY, 2, VERB_NOCHROOT, start_special }, + { "reset-failed", VERB_ANY, VERB_ANY, VERB_NOCHROOT, reset_failed }, + { "enable", 2, VERB_ANY, 0, enable_unit }, + { "disable", 2, VERB_ANY, 0, enable_unit }, + { "is-enabled", 2, VERB_ANY, 0, unit_is_enabled }, + { "reenable", 2, VERB_ANY, 0, enable_unit }, + { "preset", 2, VERB_ANY, 0, enable_unit }, + { "preset-all", VERB_ANY, 1, 0, preset_all }, + { "mask", 2, VERB_ANY, 0, enable_unit }, + { "unmask", 2, VERB_ANY, 0, enable_unit }, + { "link", 2, VERB_ANY, 0, enable_unit }, + { "revert", 2, VERB_ANY, 0, enable_unit }, + { "switch-root", 2, VERB_ANY, VERB_NOCHROOT, switch_root }, + { "list-dependencies", VERB_ANY, 2, VERB_NOCHROOT, list_dependencies }, + { "set-default", 2, 2, 0, set_default }, + { "get-default", VERB_ANY, 1, 0, get_default }, + { "set-property", 3, VERB_ANY, VERB_NOCHROOT, set_property }, + { "is-system-running", VERB_ANY, 1, 0, is_system_running }, + { "add-wants", 3, VERB_ANY, 0, add_dependency }, + { "add-requires", 3, VERB_ANY, 0, add_dependency }, + { "edit", 2, VERB_ANY, VERB_NOCHROOT, edit }, + {} + }; + + return dispatch_verb(argc, argv, verbs, NULL); +} + +static int reload_with_fallback(void) { + + /* First, try systemd via D-Bus. */ + if (daemon_reload(0, NULL, NULL) >= 0) + return 0; + + /* Nothing else worked, so let's try signals */ + assert(IN_SET(arg_action, ACTION_RELOAD, ACTION_REEXEC)); + + if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) + return log_error_errno(errno, "kill() failed: %m"); + + return 0; +} + +static int start_with_fallback(void) { + + /* First, try systemd via D-Bus. */ + if (start_unit(0, NULL, NULL) >= 0) + return 0; + + /* Nothing else worked, so let's try /dev/initctl */ + if (talk_initctl() > 0) + return 0; + + log_error("Failed to talk to init daemon."); + return -EIO; +} + +static int halt_now(enum action a) { + int r; + + /* The kernel will automaticall flush ATA disks and suchlike + * on reboot(), but the file systems need to be synce'd + * explicitly in advance. */ + if (!arg_no_sync) + (void) sync(); + + /* Make sure C-A-D is handled by the kernel from this point + * on... */ + (void) reboot(RB_ENABLE_CAD); + + switch (a) { + + case ACTION_HALT: + log_info("Halting."); + (void) reboot(RB_HALT_SYSTEM); + return -errno; + + case ACTION_POWEROFF: + log_info("Powering off."); + (void) reboot(RB_POWER_OFF); + return -errno; + + case ACTION_KEXEC: + case ACTION_REBOOT: { + _cleanup_free_ char *param = NULL; + + r = read_one_line_file("/run/systemd/reboot-param", ¶m); + if (r < 0) + log_warning_errno(r, "Failed to read reboot parameter file: %m"); + + if (!isempty(param)) { + log_info("Rebooting with argument '%s'.", param); + (void) syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, param); + log_warning_errno(errno, "Failed to reboot with parameter, retrying without: %m"); + } + + log_info("Rebooting."); + (void) reboot(RB_AUTOBOOT); + return -errno; + } + + default: + assert_not_reached("Unknown action."); + } +} + +static int logind_schedule_shutdown(void) { + +#ifdef HAVE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + char date[FORMAT_TIMESTAMP_MAX]; + const char *action; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + switch (arg_action) { + case ACTION_HALT: + action = "halt"; + break; + case ACTION_POWEROFF: + action = "poweroff"; + break; + case ACTION_KEXEC: + action = "kexec"; + break; + case ACTION_EXIT: + action = "exit"; + break; + case ACTION_REBOOT: + default: + action = "reboot"; + break; + } + + if (arg_dry) + action = strjoina("dry-", action); + + (void) logind_set_wall_message(); + + r = sd_bus_call_method( + bus, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "ScheduleShutdown", + &error, + NULL, + "st", + action, + arg_when); + if (r < 0) + return log_warning_errno(r, "Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: %s", bus_error_message(&error, r)); + + log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.", format_timestamp(date, sizeof(date), arg_when)); + return 0; +#else + log_error("Cannot schedule shutdown without logind support, proceeding with immediate shutdown."); + return -ENOSYS; +#endif +} + +static int halt_main(void) { + int r; + + r = logind_check_inhibitors(arg_action); + if (r < 0) + return r; + + if (arg_when > 0) + return logind_schedule_shutdown(); + + if (geteuid() != 0) { + if (arg_dry || arg_force > 0) { + log_error("Must be root."); + return -EPERM; + } + + /* Try logind if we are a normal user and no special + * mode applies. Maybe PolicyKit allows us to shutdown + * the machine. */ + if (IN_SET(arg_action, ACTION_POWEROFF, ACTION_REBOOT)) { + r = logind_reboot(arg_action); + if (r >= 0) + return r; + if (IN_SET(r, -EOPNOTSUPP, -EINPROGRESS)) + /* requested operation is not + * supported on the local system or + * already in progress */ + return r; + /* on all other errors, try low-level operation */ + } + } + + if (!arg_dry && !arg_force) + return start_with_fallback(); + + assert(geteuid() == 0); + + if (!arg_no_wtmp) { + if (sd_booted() > 0) + log_debug("Not writing utmp record, assuming that systemd-update-utmp is used."); + else { + r = utmp_put_shutdown(); + if (r < 0) + log_warning_errno(r, "Failed to write utmp record: %m"); + } + } + + if (arg_dry) + return 0; + + r = halt_now(arg_action); + return log_error_errno(r, "Failed to reboot: %m"); +} + +static int runlevel_main(void) { + int r, runlevel, previous; + + r = utmp_get_runlevel(&runlevel, &previous); + if (r < 0) { + puts("unknown"); + return r; + } + + printf("%c %c\n", + previous <= 0 ? 'N' : previous, + runlevel <= 0 ? 'N' : runlevel); + + return 0; +} + +static int logind_cancel_shutdown(void) { +#ifdef HAVE_LOGIND + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + sd_bus *bus; + int r; + + r = acquire_bus(BUS_FULL, &bus); + if (r < 0) + return r; + + (void) logind_set_wall_message(); + + r = sd_bus_call_method( + bus, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "CancelScheduledShutdown", + &error, + NULL, NULL); + if (r < 0) + return log_warning_errno(r, "Failed to talk to logind, shutdown hasn't been cancelled: %s", bus_error_message(&error, r)); + + return 0; +#else + log_error("Not compiled with logind support, cannot cancel scheduled shutdowns."); + return -ENOSYS; +#endif +} + +int main(int argc, char*argv[]) { + int r; + + setlocale(LC_ALL, ""); + log_parse_environment(); + log_open(); + sigbus_install(); + + /* Explicitly not on_tty() to avoid setting cached value. + * This becomes relevant for piping output which might be + * ellipsized. */ + original_stdout_is_tty = isatty(STDOUT_FILENO); + + r = parse_argv(argc, argv); + if (r <= 0) + goto finish; + + if (arg_action != ACTION_SYSTEMCTL && running_in_chroot() > 0) { + log_info("Running in chroot, ignoring request."); + r = 0; + goto finish; + } + + /* systemctl_main() will print an error message for the bus + * connection, but only if it needs to */ + + switch (arg_action) { + + case ACTION_SYSTEMCTL: + r = systemctl_main(argc, argv); + break; + + case ACTION_HALT: + case ACTION_POWEROFF: + case ACTION_REBOOT: + case ACTION_KEXEC: + r = halt_main(); + break; + + case ACTION_RUNLEVEL2: + case ACTION_RUNLEVEL3: + case ACTION_RUNLEVEL4: + case ACTION_RUNLEVEL5: + case ACTION_RESCUE: + case ACTION_EMERGENCY: + case ACTION_DEFAULT: + r = start_with_fallback(); + break; + + case ACTION_RELOAD: + case ACTION_REEXEC: + r = reload_with_fallback(); + break; + + case ACTION_CANCEL_SHUTDOWN: + r = logind_cancel_shutdown(); + break; + + case ACTION_RUNLEVEL: + r = runlevel_main(); + break; + + case _ACTION_INVALID: + default: + assert_not_reached("Unknown action"); + } + +finish: + release_busses(); + + pager_close(); + ask_password_agent_close(); + polkit_agent_close(); + + strv_free(arg_types); + strv_free(arg_states); + strv_free(arg_properties); + + strv_free(arg_wall); + free(arg_root); + + /* Note that we return r here, not EXIT_SUCCESS, so that we can implement the LSB-like return codes */ + return r < 0 ? EXIT_FAILURE : r; +} |