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Systemd/src/systemctl/systemctl.c

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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
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 <sys/reboot.h>
#include <linux/reboot.h>
#include <sys/syscall.h>
#include <stdio.h>
#include <getopt.h>
#include <locale.h>
#include <stdbool.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <stddef.h>
#include <sys/prctl.h>
#include "sd-daemon.h"
#include "sd-shutdown.h"
#include "sd-login.h"
#include "sd-bus.h"
#include "log.h"
#include "util.h"
#include "macro.h"
#include "set.h"
#include "utmp-wtmp.h"
#include "special.h"
#include "initreq.h"
#include "path-util.h"
#include "strv.h"
#include "cgroup-show.h"
#include "cgroup-util.h"
#include "list.h"
#include "path-lookup.h"
#include "conf-parser.h"
#include "exit-status.h"
#include "bus-errors.h"
#include "build.h"
#include "unit-name.h"
#include "pager.h"
#include "spawn-ask-password-agent.h"
#include "spawn-polkit-agent.h"
#include "install.h"
#include "logs-show.h"
#include "socket-util.h"
#include "fileio.h"
#include "bus-util.h"
#include "bus-message.h"
#include "bus-error.h"
#include "bus-errors.h"
static char **arg_types = NULL;
static char **arg_states = NULL;
static char **arg_properties = NULL;
static bool arg_all = false;
static bool original_stdout_is_tty;
static enum dependency {
DEPENDENCY_FORWARD,
DEPENDENCY_REVERSE,
DEPENDENCY_AFTER,
DEPENDENCY_BEFORE,
} arg_dependency = DEPENDENCY_FORWARD;
static const char *arg_job_mode = "replace";
static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
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_wall = false;
static bool arg_no_reload = 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 int arg_force = 0;
static bool arg_ask_password = true;
static bool arg_runtime = false;
static char **arg_wall = NULL;
static const char *arg_kill_who = NULL;
static int arg_signal = SIGTERM;
static const 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 char *arg_host = NULL;
static unsigned arg_lines = 10;
static OutputMode arg_output = OUTPUT_SHORT;
static bool arg_plain = false;
static int daemon_reload(sd_bus *bus, char **args);
static int halt_now(enum action a);
static void pager_open_if_enabled(void) {
if (arg_no_pager)
return;
pager_open(false);
}
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();
}
#ifdef HAVE_LOGIND
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();
}
#endif
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 void warn_wall(enum action a) {
static const char *table[_ACTION_MAX] = {
[ACTION_HALT] = "The system is going down for system halt NOW!",
[ACTION_REBOOT] = "The system is going down for reboot NOW!",
[ACTION_POWEROFF] = "The system is going down for power-off NOW!",
[ACTION_KEXEC] = "The system is going down for kexec reboot NOW!",
[ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
[ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!",
[ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
};
if (arg_no_wall)
return;
if (arg_wall) {
_cleanup_free_ char *p;
p = strv_join(arg_wall, " ");
if (!p) {
log_oom();
return;
}
if (*p) {
utmp_wall(p, NULL);
return;
}
}
if (!table[a])
return;
utmp_wall(table[a], NULL);
}
static bool avoid_bus(void) {
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;
return false;
}
static int compare_unit_info(const void *a, const void *b) {
const UnitInfo *u = a, *v = b;
const char *d1, *d2;
d1 = strrchr(u->id, '.');
d2 = strrchr(v->id, '.');
if (d1 && d2) {
int r;
r = strcasecmp(d1, d2);
if (r != 0)
return r;
}
return strcasecmp(u->id, v->id);
}
static bool output_show_unit(const UnitInfo *u) {
const char *dot;
if (!strv_isempty(arg_states))
return
strv_contains(arg_states, u->load_state) ||
strv_contains(arg_states, u->sub_state) ||
strv_contains(arg_states, u->active_state);
return (!arg_types || ((dot = strrchr(u->id, '.')) &&
strv_find(arg_types, dot+1))) &&
(arg_all || !(streq(u->active_state, "inactive")
|| u->following[0]) || u->job_id > 0);
}
static void output_units_list(const UnitInfo *unit_infos, unsigned c) {
unsigned id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
const UnitInfo *u;
unsigned n_shown = 0;
int job_count = 0;
max_id_len = sizeof("UNIT")-1;
load_len = sizeof("LOAD")-1;
active_len = sizeof("ACTIVE")-1;
sub_len = sizeof("SUB")-1;
job_len = sizeof("JOB")-1;
desc_len = 0;
for (u = unit_infos; u < unit_infos + c; u++) {
if (!output_show_unit(u))
continue;
max_id_len = MAX(max_id_len, strlen(u->id));
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));
if (u->job_id != 0) {
job_len = MAX(job_len, strlen(u->job_type));
job_count++;
}
}
if (!arg_full && original_stdout_is_tty) {
unsigned basic_len;
id_len = MIN(max_id_len, 25u);
basic_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;
/* split the remaining space between UNIT and DESC,
* but do not give UNIT more than it needs. */
if (extra_len > 0) {
incr = MIN(extra_len / 2, max_id_len - id_len);
id_len += incr;
desc_len += extra_len - incr;
}
}
} else
id_len = max_id_len;
for (u = unit_infos; u < unit_infos + c; u++) {
_cleanup_free_ char *e = NULL;
const char *on_loaded, *off_loaded, *on = "";
const char *on_active, *off_active, *off = "";
if (!output_show_unit(u))
continue;
if (!n_shown && !arg_no_legend) {
printf("%-*s %-*s %-*s %-*s ",
id_len, "UNIT",
load_len, "LOAD",
active_len, "ACTIVE",
sub_len, "SUB");
if (job_count)
printf("%-*s ", job_len, "JOB");
if (!arg_full && arg_no_pager)
printf("%.*s\n", desc_len, "DESCRIPTION");
else
printf("%s\n", "DESCRIPTION");
}
n_shown++;
if (streq(u->load_state, "error") ||
streq(u->load_state, "not-found")) {
on_loaded = on = ansi_highlight_red();
off_loaded = off = ansi_highlight_off();
} else
on_loaded = off_loaded = "";
if (streq(u->active_state, "failed")) {
on_active = on = ansi_highlight_red();
off_active = off = ansi_highlight_off();
} else
on_active = off_active = "";
e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
on, id_len, e ? e : u->id, off,
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 : "");
if (desc_len > 0)
printf("%.*s\n", desc_len, u->description);
else
printf("%s\n", u->description);
}
if (!arg_no_legend) {
const char *on, *off;
if (n_shown) {
printf("\nLOAD = 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.\n");
if (job_count)
printf("JOB = Pending job for the unit.\n");
puts("");
on = ansi_highlight();
off = ansi_highlight_off();
} else {
on = ansi_highlight_red();
off = ansi_highlight_off();
}
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);
}
}
static int get_unit_list(
sd_bus *bus,
sd_bus_message **_reply,
UnitInfo **_unit_infos) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ UnitInfo *unit_infos = NULL;
size_t size = 0;
int r, c = 0;
UnitInfo u;
assert(bus);
assert(_reply);
assert(_unit_infos);
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnits",
&error,
&reply,
NULL);
if (r < 0) {
log_error("Failed to list units: %s", bus_error_message(&error, r));
return 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) {
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;
*_unit_infos = unit_infos;
unit_infos = NULL;
return c;
}
static int list_units(sd_bus *bus, char **args) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ UnitInfo *unit_infos = NULL;
int r;
pager_open_if_enabled();
r = get_unit_list(bus, &reply, &unit_infos);
if (r < 0)
return r;
qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
output_units_list(unit_infos, r);
return 0;
}
static int get_triggered_units(
sd_bus *bus,
const char* path,
char*** ret) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
r = sd_bus_get_property_strv(
bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Unit",
"Triggers",
&error,
ret);
if (r < 0)
log_error("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_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ 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) {
log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
return 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* 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);
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 = sizeof("LISTEN") - 1,
typelen = (sizeof("TYPE") - 1) * arg_show_types,
socklen = sizeof("UNIT") - 1,
servlen = sizeof("ACTIVATES") - 1;
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));
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++) {
char **a;
if (arg_show_types)
printf("%-*s %-*s %-*s",
pathlen, s->path, typelen, s->type, socklen, s->id);
else
printf("%-*s %-*s",
pathlen, s->path, socklen, s->id);
STRV_FOREACH(a, s->triggered)
printf("%s %s",
a == s->triggered ? "" : ",", *a);
printf("\n");
}
on = ansi_highlight();
off = ansi_highlight_off();
if (!arg_no_legend)
printf("\n");
} else {
on = ansi_highlight_red();
off = ansi_highlight_off();
}
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(sd_bus *bus, char **args) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ UnitInfo *unit_infos = NULL;
struct socket_info *socket_infos = NULL;
const UnitInfo *u;
struct socket_info *s;
unsigned cs = 0;
size_t size = 0;
int r = 0, n;
pager_open_if_enabled();
n = get_unit_list(bus, &reply, &unit_infos);
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 (!output_show_unit(u))
continue;
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) {
.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);
}
free(socket_infos);
return r;
}
static int get_next_elapse(
sd_bus *bus,
const char *path,
dual_timestamp *next) {
_cleanup_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) {
log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
return r;
}
r = sd_bus_get_property_trivial(
bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Timer",
"NextElapseUSecRealtime",
&error,
't',
&t.realtime);
if (r < 0) {
log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
return r;
}
*next = t;
return 0;
}
struct timer_info {
const char* id;
usec_t next_elapse;
char** triggered;
};
static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
assert(a);
assert(b);
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 = sizeof("NEXT") - 1,
leftlen = sizeof("LEFT") - 1,
unitlen = sizeof("UNIT") - 1,
activatelen = sizeof("ACTIVATES") - 1;
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));
}
unitlen = MAX(unitlen, strlen(t->id));
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\n",
nextlen, "NEXT",
leftlen, "LEFT",
unitlen, "UNIT",
"ACTIVATES");
for (t = timer_infos; t < timer_infos + n; t++) {
char tstamp[FORMAT_TIMESTAMP_MAX] = "n/a", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
char **a;
format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
printf("%-*s %-*s %-*s",
nextlen, tstamp, leftlen, trel, unitlen, t->id);
STRV_FOREACH(a, t->triggered)
printf("%s %s",
a == t->triggered ? "" : ",", *a);
printf("\n");
}
on = ansi_highlight();
off = ansi_highlight_off();
if (!arg_no_legend)
printf("\n");
} else {
on = ansi_highlight_red();
off = ansi_highlight_off();
}
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 int list_timers(sd_bus *bus, char **args) {
_cleanup_bus_message_unref_ sd_bus_message *reply = 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;
int r = 0;
pager_open_if_enabled();
n = get_unit_list(bus, &reply, &unit_infos);
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;
usec_t m;
if (!output_show_unit(u))
continue;
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;
if (next.monotonic != (usec_t) -1 && 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_t) -1 && next.realtime > 0)
m = MIN(converted, next.realtime);
else
m = converted;
} else
m = next.realtime;
if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
r = log_oom();
goto cleanup;
}
timer_infos[c++] = (struct timer_info) {
.id = u->id,
.next_elapse = m,
.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(path_get_file_name(u->path), path_get_file_name(v->path));
}
static bool output_show_unit_file(const UnitFileList *u) {
const char *dot;
return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
}
static void output_unit_file_list(const UnitFileList *units, unsigned c) {
unsigned max_id_len, id_cols, state_cols, n_shown = 0;
const UnitFileList *u;
max_id_len = sizeof("UNIT FILE")-1;
state_cols = sizeof("STATE")-1;
for (u = units; u < units + c; u++) {
if (!output_show_unit_file(u))
continue;
max_id_len = MAX(max_id_len, strlen(path_get_file_name(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)
printf("%-*s %-*s\n",
id_cols, "UNIT FILE",
state_cols, "STATE");
for (u = units; u < units + c; u++) {
_cleanup_free_ char *e = NULL;
const char *on, *off;
const char *id;
if (!output_show_unit_file(u))
continue;
n_shown++;
if (u->state == UNIT_FILE_MASKED ||
u->state == UNIT_FILE_MASKED_RUNTIME ||
u->state == UNIT_FILE_DISABLED ||
u->state == UNIT_FILE_INVALID) {
on = ansi_highlight_red();
off = ansi_highlight_off();
} else if (u->state == UNIT_FILE_ENABLED) {
on = ansi_highlight_green();
off = ansi_highlight_off();
} else
on = off = "";
id = path_get_file_name(u->path);
e = arg_full ? NULL : ellipsize(id, id_cols, 33);
printf("%-*s %s%-*s%s\n",
id_cols, e ? e : id,
on, state_cols, unit_file_state_to_string(u->state), off);
}
if (!arg_no_legend)
printf("\n%u unit files listed.\n", n_shown);
}
static int list_unit_files(sd_bus *bus, char **args) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ UnitFileList *units = NULL;
unsigned c = 0;
const char *state;
char *path;
int r;
pager_open_if_enabled();
if (avoid_bus()) {
Hashmap *h;
UnitFileList *u;
Iterator i;
unsigned n_units;
h = hashmap_new(string_hash_func, string_compare_func);
if (!h)
return log_oom();
r = unit_file_get_list(arg_scope, arg_root, h);
if (r < 0) {
unit_file_list_free(h);
log_error("Failed to get unit file list: %s", strerror(-r));
return r;
}
n_units = hashmap_size(h);
units = new(UnitFileList, n_units);
if (!units) {
unit_file_list_free(h);
return log_oom();
}
HASHMAP_FOREACH(u, h, i) {
memcpy(units + c++, u, sizeof(UnitFileList));
free(u);
}
assert(c == n_units);
hashmap_free(h);
} else {
size_t size = 0;
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnitFiles",
&error,
&reply,
NULL);
if (r < 0) {
log_error("Failed to list unit files: %s", bus_error_message(&error, r));
return 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 (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 (c > 0) {
qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
output_unit_file_list(units, c);
}
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", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
}
len += 2;
if(len > max_len - 3 && !arg_full) {
printf("%s...\n",max_len % 2 ? "" : " ");
return 0;
}
printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_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_FORWARD] = "Requires\0"
"RequiresOverridable\0"
"Requisite\0"
"RequisiteOverridable\0"
"Wants\0",
[DEPENDENCY_REVERSE] = "RequiredBy\0"
"RequiredByOverridable\0"
"WantedBy\0"
"PartOf\0",
[DEPENDENCY_AFTER] = "After\0",
[DEPENDENCY_BEFORE] = "Before\0",
};
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ 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(arg_dependency < ELEMENTSOF(dependencies));
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) {
log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
return 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, **u;
char **c;
int r = 0;
assert(bus);
assert(name);
assert(units);
u = strv_append(*units, name);
if (!u)
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(u, *c)) {
if (!arg_plain) {
r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
if (r < 0)
return r;
}
continue;
}
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, &u, (branches << 1) | (c[1] == NULL ? 0 : 1));
if(r < 0)
return r;
}
}
if (arg_plain) {
strv_free(*units);
*units = u;
u = NULL;
}
return 0;
}
static int list_dependencies(sd_bus *bus, char **args) {
_cleanup_strv_free_ char **units = NULL;
_cleanup_free_ char *unit = NULL;
const char *u;
assert(bus);
if (args[1]) {
unit = unit_name_mangle(args[1]);
if (!unit)
return log_oom();
u = unit;
} else
u = SPECIAL_DEFAULT_TARGET;
pager_open_if_enabled();
puts(u);
return list_dependencies_one(bus, u, 0, &units, 0);
}
static int get_default(sd_bus *bus, char **args) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *_path = NULL;
const char *path;
int r;
if (!bus || avoid_bus()) {
r = unit_file_get_default(arg_scope, arg_root, &_path);
if (r < 0) {
log_error("Failed to get default target: %s", strerror(-r));
return r;
}
path = _path;
} else {
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetDefaultTarget",
&error,
&reply,
NULL);
if (r < 0) {
log_error("Failed to get default target: %s", bus_error_message(&error, -r));
return 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 void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
unsigned i;
assert(changes || n_changes == 0);
for (i = 0; i < n_changes; i++) {
if (changes[i].type == UNIT_FILE_SYMLINK)
log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
else
log_info("rm '%s'", changes[i].path);
}
}
static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
const char *type, *path, *source;
int r;
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
if (!arg_quiet) {
if (streq(type, "symlink"))
log_info("ln -s '%s' '%s'", source, path);
else
log_info("rm '%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;
}
static int set_default(sd_bus *bus, char **args) {
_cleanup_free_ char *unit = NULL;
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
int r;
unit = unit_name_mangle_with_suffix(args[1], ".target");
if (!unit)
return log_oom();
if (!bus || avoid_bus()) {
r = unit_file_set_default(arg_scope, arg_root, unit, arg_force, &changes, &n_changes);
if (r < 0) {
log_error("Failed to set default target: %s", strerror(-r));
return r;
}
if (!arg_quiet)
dump_unit_file_changes(changes, n_changes);
r = 0;
} else {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"SetDefaultTarget",
&error,
&reply,
"sb", unit, arg_force);
if (r < 0) {
log_error("Failed to set default target: %s", bus_error_message(&error, -r));
return r;
}
r = deserialize_and_dump_unit_file_changes(reply);
if (r < 0)
return r;
/* Try to reload if enabeld */
if (!arg_no_reload)
r = daemon_reload(bus, args);
else
r = 0;
}
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) {
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) {
on = ansi_highlight_green();
off = ansi_highlight_off();
printf("%sNo jobs running.%s\n", on, off);
return;
}
pager_open_if_enabled();
id_len = sizeof("JOB")-1;
unit_len = sizeof("UNIT")-1;
type_len = sizeof("TYPE")-1;
state_len = sizeof("STATE")-1;
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_highlight_off();
} 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_highlight_off();
printf("\n%s%u jobs listed%s.\n", on, n, off);
}
}
static int list_jobs(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ 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;
uint32_t id;
int r;
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListJobs",
&error,
&reply,
NULL);
if (r < 0) {
log_error("Failed to list jobs: %s", bus_error_message(&error, r));
return 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) {
if (!GREEDY_REALLOC(jobs, size, c + 1))
return log_oom();
jobs[c++] = (struct job_info) {
id,
name,
type,
state
};
}
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);
output_jobs_list(jobs, c);
return r;
}
static int cancel_job(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
char **name;
assert(args);
if (strv_length(args) <= 1)
return daemon_reload(bus, args);
STRV_FOREACH(name, args+1) {
uint32_t id;
int r;
r = safe_atou32(*name, &id);
if (r < 0) {
log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
return r;
}
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"CancelJob",
&error,
NULL,
"u", id);
if (r < 0) {
log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
return r;
}
}
return 0;
}
static int need_daemon_reload(sd_bus *bus, const char *unit) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ char *n = NULL;
const char *path;
int b, r;
/* We ignore all errors here, since this is used to show a
* warning only */
n = unit_name_mangle(unit);
if (!n)
return -ENOMEM;
/* 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", n);
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;
}
typedef struct WaitData {
Set *set;
char *name;
char *result;
} WaitData;
static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
WaitData *d = data;
assert(bus);
assert(m);
assert(d);
log_debug("Got D-Bus request: %s.%s() on %s",
sd_bus_message_get_interface(m),
sd_bus_message_get_member(m),
sd_bus_message_get_path(m));
if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
log_error("Warning! D-Bus connection terminated.");
sd_bus_close(bus);
} else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
uint32_t id;
const char *path, *result, *unit;
char *ret;
int r;
r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
if (r >= 0) {
ret = set_remove(d->set, (char*) path);
if (!ret)
return 0;
free(ret);
if (!isempty(result))
d->result = strdup(result);
if (!isempty(unit))
d->name = strdup(unit);
return 0;
}
#ifndef NOLEGACY
r = sd_bus_message_read(m, "uos", &id, &path, &result);
if (r >= 0) {
ret = set_remove(d->set, (char*) path);
if (!ret)
return 0;
free(ret);
if (*result)
d->result = strdup(result);
return 0;
}
#endif
bus_log_parse_error(r);
}
return 0;
}
static int enable_wait_for_jobs(sd_bus *bus) {
int r;
assert(bus);
r = sd_bus_add_match(
bus,
"type='signal',"
"sender='org.freedesktop.systemd1',"
"interface='org.freedesktop.systemd1.Manager',"
"member='JobRemoved',"
"path='/org/freedesktop/systemd1'",
NULL, NULL);
if (r < 0) {
log_error("Failed to add match");
return -EIO;
}
/* This is slightly dirty, since we don't undo the match registrations. */
return 0;
}
static int wait_for_jobs(sd_bus *bus, Set *s) {
WaitData d = { .set = s };
int r;
assert(bus);
assert(s);
r = sd_bus_add_filter(bus, wait_filter, &d);
if (r < 0)
return log_oom();
while (!set_isempty(s)) {
for(;;) {
r = sd_bus_process(bus, NULL);
if (r < 0)
return r;
if (r > 0)
break;
r = sd_bus_wait(bus, (uint64_t) -1);
if (r < 0)
return r;
}
if (!d.result)
goto free_name;
if (!arg_quiet) {
if (streq(d.result, "timeout"))
log_error("Job for %s timed out.", strna(d.name));
else if (streq(d.result, "canceled"))
log_error("Job for %s canceled.", strna(d.name));
else if (streq(d.result, "dependency"))
log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d.name));
else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d.name), strna(d.name));
}
if (streq_ptr(d.result, "timeout"))
r = -ETIME;
else if (streq_ptr(d.result, "canceled"))
r = -ECANCELED;
else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
r = -EIO;
free(d.result);
d.result = NULL;
free_name:
free(d.name);
d.name = NULL;
}
return sd_bus_remove_filter(bus, wait_filter, &d);
}
static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ char *n = NULL, *state = NULL;
const char *path;
int r;
assert(name);
n = unit_name_mangle(name);
if (!n)
return log_oom();
/* 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", n);
if (r < 0) {
if (!quiet)
puts("unknown");
return 0;
}
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",
NULL,
&state);
if (r < 0) {
if (!quiet)
puts("unknown");
return 0;
}
if (!quiet)
puts(state);
return nulstr_contains(good_states, state);
}
static int check_triggering_units(
sd_bus *bus,
const char *name) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
_cleanup_strv_free_ char **triggered_by = NULL;
bool print_warning_label = true;
char **i;
int r;
n = unit_name_mangle(name);
if (!n)
return log_oom();
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,
&state);
if (r < 0) {
log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
return r;
}
if (streq(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) {
log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
return r;
}
STRV_FOREACH(i, triggered_by) {
r = check_one_unit(bus, *i, "active\0reloading\0", true);
if (r < 0) {
log_error("Failed to check unit: %s", strerror(-r));
return r;
}
if (r == 0)
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 int start_unit_one(
sd_bus *bus,
const char *method,
const char *name,
const char *mode,
sd_bus_error *error,
Set *s) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ char *n;
const char *path;
int r;
assert(method);
assert(name);
assert(mode);
assert(error);
n = unit_name_mangle(name);
if (!n)
return log_oom();
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
method,
error,
&reply,
"ss", n, mode);
if (r < 0) {
if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
/* There's always a fallback possible for
* legacy actions. */
return -EADDRNOTAVAIL;
log_error("Failed to start %s: %s", name, bus_error_message(error, r));
return r;
}
r = sd_bus_message_read(reply, "o", &path);
if (r < 0)
return bus_log_parse_error(r);
if (need_daemon_reload(bus, n) > 0)
log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
n, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
if (s) {
char *p;
p = strdup(path);
if (!p)
return log_oom();
r = set_consume(s, p);
if (r < 0)
return log_oom();
}
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_RUNLEVEL2_TARGET, NULL, "isolate" },
[ACTION_RUNLEVEL3] = { SPECIAL_RUNLEVEL3_TARGET, NULL, "isolate" },
[ACTION_RUNLEVEL4] = { SPECIAL_RUNLEVEL4_TARGET, NULL, "isolate" },
[ACTION_RUNLEVEL5] = { SPECIAL_RUNLEVEL5_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(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_set_free_free_ Set *s = NULL;
const char *method, *mode, *one_name;
char **name;
int r;
assert(bus);
ask_password_agent_open_if_enabled();
if (arg_action == ACTION_SYSTEMCTL) {
enum action action;
method =
streq(args[0], "stop") ||
streq(args[0], "condstop") ? "StopUnit" :
streq(args[0], "reload") ? "ReloadUnit" :
streq(args[0], "restart") ? "RestartUnit" :
streq(args[0], "try-restart") ||
streq(args[0], "condrestart") ? "TryRestartUnit" :
streq(args[0], "reload-or-restart") ? "ReloadOrRestartUnit" :
streq(args[0], "reload-or-try-restart") ||
streq(args[0], "condreload") ||
streq(args[0], "force-reload") ? "ReloadOrTryRestartUnit" :
"StartUnit";
action = verb_to_action(args[0]);
mode = streq(args[0], "isolate") ? "isolate" :
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 (!arg_no_block) {
r = enable_wait_for_jobs(bus);
if (r < 0) {
log_error("Could not watch jobs: %s", strerror(-r));
return r;
}
s = set_new(string_hash_func, string_compare_func);
if (!s)
return log_oom();
}
if (one_name) {
r = start_unit_one(bus, method, one_name, mode, &error, s);
if (r < 0)
r = translate_bus_error_to_exit_status(r, &error);
} else {
r = 0;
STRV_FOREACH(name, args+1) {
int q;
q = start_unit_one(bus, method, *name, mode, &error, s);
if (q < 0) {
r = translate_bus_error_to_exit_status(r, &error);
sd_bus_error_free(&error);
}
}
}
if (!arg_no_block) {
int q;
q = wait_for_jobs(bus, s);
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")) {
if (one_name)
check_triggering_units(bus, one_name);
else
STRV_FOREACH(name, args+1)
check_triggering_units(bus, *name);
}
}
return r;
}
/* Ask systemd-logind, which might grant access to unprivileged users
* through PolicyKit */
static int reboot_with_logind(sd_bus *bus, enum action a) {
#ifdef HAVE_LOGIND
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
const char *method;
int r;
if (!bus)
return -EIO;
polkit_agent_open_if_enabled();
switch (a) {
case ACTION_REBOOT:
method = "Reboot";
break;
case ACTION_POWEROFF:
method = "PowerOff";
break;
case ACTION_SUSPEND:
method = "Suspend";
break;
case ACTION_HIBERNATE:
method = "Hibernate";
break;
case ACTION_HYBRID_SLEEP:
method = "HybridSleep";
break;
default:
return -EINVAL;
}
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
method,
&error,
NULL,
"b", true);
if (r < 0)
log_error("Failed to execute operation: %s", bus_error_message(&error, r));
return r;
#else
return -ENOSYS;
#endif
}
static int check_inhibitors(sd_bus *bus, enum action a) {
#ifdef HAVE_LOGIND
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_strv_free_ char **sessions = NULL;
const char *what, *who, *why, *mode;
uint32_t uid, pid;
unsigned c = 0;
char **s;
int r;
if (!bus)
return 0;
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;
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 (!strv_contains(sv,
a == ACTION_HALT ||
a == ACTION_POWEROFF ||
a == ACTION_REBOOT ||
a == ACTION_KEXEC ? "shutdown" : "sleep"))
continue;
get_process_comm(pid, &comm);
user = uid_to_name(uid);
log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
who, (unsigned long) 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 || (!streq(type, "x11") && !streq(type, "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 start_special(sd_bus *bus, char **args) {
enum action a;
int r;
assert(args);
a = verb_to_action(args[0]);
r = check_inhibitors(bus, a);
if (r < 0)
return r;
if (arg_force >= 2 && geteuid() != 0) {
log_error("Must be root.");
return -EPERM;
}
if (arg_force >= 2 &&
(a == ACTION_HALT ||
a == ACTION_POWEROFF ||
a == ACTION_REBOOT))
return halt_now(a);
if (arg_force >= 1 &&
(a == ACTION_HALT ||
a == ACTION_POWEROFF ||
a == ACTION_REBOOT ||
a == ACTION_KEXEC ||
a == ACTION_EXIT))
return daemon_reload(bus, args);
/* first try logind, to allow authentication with polkit */
if (geteuid() != 0 &&
(a == ACTION_POWEROFF ||
a == ACTION_REBOOT ||
a == ACTION_SUSPEND ||
a == ACTION_HIBERNATE ||
a == ACTION_HYBRID_SLEEP)) {
r = reboot_with_logind(bus, a);
if (r >= 0)
return r;
}
r = start_unit(bus, args);
if (r == EXIT_SUCCESS)
warn_wall(a);
return r;
}
static int check_unit_active(sd_bus *bus, char **args) {
char **name;
int r = 3; /* According to LSB: "program is not running" */
assert(bus);
assert(args);
STRV_FOREACH(name, args+1) {
int state;
state = check_one_unit(bus, *name, "active\0reloading\0", arg_quiet);
if (state < 0)
return state;
if (state > 0)
r = 0;
}
return r;
}
static int check_unit_failed(sd_bus *bus, char **args) {
char **name;
int r = 1;
assert(bus);
assert(args);
STRV_FOREACH(name, args+1) {
int state;
state = check_one_unit(bus, *name, "failed\0", arg_quiet);
if (state < 0)
return state;
if (state > 0)
r = 0;
}
return r;
}
static int kill_unit(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
char **name;
int r = 0;
assert(bus);
assert(args);
if (!arg_kill_who)
arg_kill_who = "all";
STRV_FOREACH(name, args+1) {
_cleanup_free_ char *n = NULL;
n = unit_name_mangle(*name);
if (!n)
return log_oom();
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"KillUnit",
&error,
NULL,
"ssi", n, arg_kill_who, arg_signal);
if (r < 0) {
log_error("Failed to kill unit %s: %s", n, bus_error_message(&error, r));
return r;
}
}
return 0;
}
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 UnitStatusInfo {
const char *id;
const char *load_state;
const char *active_state;
const char *sub_state;
const char *unit_file_state;
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;
/* Service */
pid_t main_pid;
pid_t control_pid;
const char *status_text;
const char *pid_file;
bool running:1;
usec_t start_timestamp;
usec_t exit_timestamp;
int exit_code, exit_status;
usec_t condition_timestamp;
bool condition_result;
bool failed_condition_trigger;
bool failed_condition_negate;
const char *failed_condition;
const char *failed_condition_param;
/* 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;
LIST_HEAD(ExecStatusInfo, exec);
} UnitStatusInfo;
static void print_status_info(
UnitStatusInfo *i,
bool *ellipsized) {
ExecStatusInfo *p;
const char *on, *off, *ss;
usec_t timestamp;
char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
char since2[FORMAT_TIMESTAMP_MAX], *s2;
const char *path;
int flags =
arg_all * OUTPUT_SHOW_ALL |
(!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
on_tty() * OUTPUT_COLOR |
!arg_quiet * OUTPUT_WARN_CUTOFF |
arg_full * OUTPUT_FULL_WIDTH;
char **t, **t2;
assert(i);
/* This shows pretty information about a unit. See
* print_property() for a low-level property printer */
printf("%s", 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_highlight_off();
} else
on = off = "";
path = i->source_path ? i->source_path : i->fragment_path;
if (i->load_error)
printf(" Loaded: %s%s%s (Reason: %s)\n",
on, strna(i->load_state), off, i->load_error);
else if (path && 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 (!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: ");
free(dir);
dir = NULL;
if (path_get_parent(*dropin, &dir) < 0) {
log_oom();
return;
}
printf("%s\n %s", dir,
draw_special_char(DRAW_TREE_RIGHT));
}
last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
printf("%s%s", path_get_file_name(*dropin), last ? "\n" : ", ");
}
}
ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
if (streq_ptr(i->active_state, "failed")) {
on = ansi_highlight_red();
off = ansi_highlight_off();
} else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
on = ansi_highlight_green();
off = ansi_highlight_off();
} else
on = off = "";
if (ss)
printf(" Active: %s%s (%s)%s",
on, strna(i->active_state), ss, off);
else
printf(" Active: %s%s%s",
on, strna(i->active_state), off);
if (!isempty(i->result) && !streq(i->result, "success"))
printf(" (Result: %s)", i->result);
timestamp = (streq_ptr(i->active_state, "active") ||
streq_ptr(i->active_state, "reloading")) ? i->active_enter_timestamp :
(streq_ptr(i->active_state, "inactive") ||
streq_ptr(i->active_state, "failed")) ? i->inactive_enter_timestamp :
streq_ptr(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) {
s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
printf(" start condition failed at %s%s%s\n",
s2, s1 ? "; " : "", s1 ? s1 : "");
if (i->failed_condition_trigger)
printf(" none of the trigger conditions were met\n");
else if (i->failed_condition)
printf(" %s=%s%s was not met\n",
i->failed_condition,
i->failed_condition_negate ? "!" : "",
i->failed_condition_param);
}
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: %u %s=%s ", p->pid, p->name, strna(argv));
good = is_clean_exit_lsb(p->code, p->status, NULL);
if (!good) {
on = ansi_highlight_red();
off = ansi_highlight_off();
} 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: %u", (unsigned) i->main_pid);
if (i->running) {
_cleanup_free_ char *comm = NULL;
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)
printf(";");
}
if (i->control_pid > 0) {
_cleanup_free_ char *c = NULL;
printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
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->control_group &&
(i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0)) {
unsigned c;
printf(" CGroup: %s\n", i->control_group);
if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
unsigned k = 0;
pid_t extra[2];
char prefix[] = " ";
c = columns();
if (c > sizeof(prefix) - 1)
c -= sizeof(prefix) - 1;
else
c = 0;
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, false, extra, k, flags);
}
}
if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
printf("\n");
show_journal_by_unit(stdout,
i->id,
arg_output,
0,
i->inactive_exit_timestamp_monotonic,
arg_lines,
getuid(),
flags,
arg_scope == UNIT_FILE_SYSTEM,
ellipsized);
}
if (i->need_daemon_reload)
printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
ansi_highlight_red(),
ansi_highlight_off(),
arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
}
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:")) {
const char *args[4] = { "man", NULL, NULL, NULL };
_cleanup_free_ char *page = NULL, *section = NULL;
char *e = NULL;
pid_t pid;
size_t k;
k = strlen(*p);
if ((*p)[k-1] == ')')
e = strrchr(*p, '(');
if (e) {
page = strndup((*p) + 4, e - *p - 4);
section = strndup(e + 1, *p + k - e - 2);
if (!page || !section) {
log_oom();
return;
}
args[1] = section;
args[2] = page;
} else
args[1] = *p + 4;
pid = fork();
if (pid < 0) {
log_error("Failed to fork: %m");
continue;
}
if (pid == 0) {
/* Child */
execvp(args[0], (char**) args);
log_error("Failed to execute man: %m");
_exit(EXIT_FAILURE);
}
wait_for_terminate(pid, NULL);
} 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, "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;
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;
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;
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)
log_oom();
LIST_PREPEND(exec, i->exec, info);
info = new0(ExecStatusInfo, 1);
if (!info)
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, &param, &state)) > 0) {
log_debug("%s %d %d %s %d", cond, trigger, negate, param, state);
if (state < 0 && (!trigger || !i->failed_condition)) {
i->failed_condition = cond;
i->failed_condition_trigger = trigger;
i->failed_condition_negate = negate;
i->failed_condition_param = 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;
}
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)
printf("%s=%u\n", name, (unsigned) u);
else if (arg_all)
printf("%s=\n", name);
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))
printf("%s=%s\n", name, 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))
printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
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)
printf("EnvironmentFile=%s (ignore_errors=%s)\n", 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)
printf("%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, "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)
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];
printf("%s={ value=%s ; next_elapse=%s }\n",
base,
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, " ");
printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
name,
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)),
(unsigned) 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)
printf("%s=%s %s\n", name, 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 && streq(name, "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)
printf("%s=%s %" PRIu64 "\n", name, 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 && (streq(name, "BlockIOReadBandwidth") || streq(name, "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)
printf("%s=%s %" PRIu64 "\n", name, 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_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,
bool show_properties,
bool *new_line,
bool *ellipsized) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
UnitStatusInfo info = {};
ExecStatusInfo *p;
int r;
assert(path);
assert(new_line);
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"GetAll",
&error,
&reply,
"s", "");
if (r < 0) {
log_error("Failed to get properties: %s", bus_error_message(&error, r));
return 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 = 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) {
if (streq(verb, "help"))
show_unit_help(&info);
else
print_status_info(&info, ellipsized);
}
strv_free(info.documentation);
strv_free(info.dropin_paths);
strv_free(info.listen);
if (!streq_ptr(info.active_state, "active") &&
!streq_ptr(info.active_state, "reloading") &&
streq(verb, "status")) {
/* According to LSB: "program not running" */
/* 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
*/
if (info.pid_file && access(info.pid_file, F_OK) == 0)
r = 1;
else
r = 3;
}
while ((p = info.exec)) {
LIST_REMOVE(exec, info.exec, p);
exec_status_info_free(p);
}
return r;
}
static int show_one_by_pid(
const char *verb,
sd_bus *bus,
uint32_t pid,
bool *new_line,
bool *ellipsized) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
const char *path = NULL;
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) {
log_error("Failed to get unit for PID %lu: %s", (unsigned long) pid, bus_error_message(&error, r));
return r;
}
r = sd_bus_message_read(reply, "o", &path);
if (r < 0)
return bus_log_parse_error(r);
return show_one(verb, bus, path, false, new_line, ellipsized);
}
static int show_all(
const char* verb,
sd_bus *bus,
bool show_properties,
bool *new_line,
bool *ellipsized) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ UnitInfo *unit_infos = NULL;
const UnitInfo *u;
unsigned c;
int r;
r = get_unit_list(bus, &reply, &unit_infos);
if (r < 0)
return r;
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;
if (!output_show_unit(u))
continue;
p = unit_dbus_path_from_name(u->id);
if (!p)
return log_oom();
printf("%s -> '%s'\n", u->id, p);
r = show_one(verb, bus, p, show_properties, new_line, ellipsized);
if (r != 0)
return r;
}
return 0;
}
static int show(sd_bus *bus, char **args) {
int r, ret = 0;
bool show_properties, show_status, new_line = false;
char **name;
bool ellipsized = false;
assert(bus);
assert(args);
show_properties = streq(args[0], "show");
show_status = streq(args[0], "status");
if (show_properties)
pager_open_if_enabled();
/* If no argument is specified inspect the manager itself */
if (show_properties && strv_length(args) <= 1)
return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line, &ellipsized);
if (show_status && strv_length(args) <= 1)
ret = show_all(args[0], bus, false, &new_line, &ellipsized);
else
STRV_FOREACH(name, args+1) {
uint32_t id;
if (safe_atou32(*name, &id) < 0) {
_cleanup_free_ char *p = NULL, *n = NULL;
/* Interpret as unit name */
n = unit_name_mangle(*name);
if (!n)
return log_oom();
p = unit_dbus_path_from_name(n);
if (!p)
return log_oom();
r = show_one(args[0], bus, p, show_properties, &new_line, &ellipsized);
if (r != 0)
ret = r;
} else if (show_properties) {
_cleanup_free_ char *p = NULL;
/* Interpret as job id */
if (asprintf(&p, "/org/freedesktop/systemd1/job/%u", id) < 0)
return log_oom();
r = show_one(args[0], bus, p, show_properties, &new_line, &ellipsized);
if (r != 0)
ret = r;
} else {
/* Interpret as PID */
r = show_one_by_pid(args[0], bus, id, &new_line, &ellipsized);
if (r != 0)
ret = r;
}
}
if (ellipsized && !arg_quiet)
printf("Hint: Some lines were ellipsized, use -l to show in full.\n");
return ret;
}
static int append_assignment(sd_bus_message *m, const char *assignment) {
const char *eq;
char *field;
int r;
assert(m);
assert(assignment);
eq = strchr(assignment, '=');
if (!eq) {
log_error("Not an assignment: %s", assignment);
return -EINVAL;
}
field = strndupa(assignment, eq - assignment);
eq ++;
r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field);
if (r < 0)
return bus_log_create_error(r);
if (streq(field, "CPUAccounting") ||
streq(field, "MemoryAccounting") ||
streq(field, "BlockIOAccounting")) {
r = parse_boolean(eq);
if (r < 0) {
log_error("Failed to parse boolean assignment %s.", assignment);
return -EINVAL;
}
r = sd_bus_message_append(m, "v", "b", r);
} else if (streq(field, "MemoryLimit")) {
off_t bytes;
r = parse_bytes(eq, &bytes);
if (r < 0) {
log_error("Failed to parse bytes specification %s", assignment);
return -EINVAL;
}
r = sd_bus_message_append(m, "v", "t", (uint64_t) bytes);
} else if (streq(field, "CPUShares") || streq(field, "BlockIOWeight")) {
uint64_t u;
r = safe_atou64(eq, &u);
if (r < 0) {
log_error("Failed to parse %s value %s.", field, eq);
return -EINVAL;
}
r = sd_bus_message_append(m, "v", "t", u);
} else if (streq(field, "DevicePolicy"))
r = sd_bus_message_append(m, "v", "s", eq);
else if (streq(field, "DeviceAllow")) {
if (isempty(eq))
r = sd_bus_message_append(m, "v", "a(ss)", 0);
else {
const char *path, *rwm;
char *e;
e = strchr(eq, ' ');
if (e) {
path = strndupa(eq, e - eq);
rwm = e+1;
} else {
path = eq;
rwm = "";
}
if (!path_startswith(path, "/dev")) {
log_error("%s is not a device file in /dev.", path);
return -EINVAL;
}
r = sd_bus_message_append(m, "v", "a(ss)", 1, path, rwm);
}
} else if (streq(field, "BlockIOReadBandwidth") || streq(field, "BlockIOWriteBandwidth")) {
if (isempty(eq))
r = sd_bus_message_append(m, "v", "a(st)", 0);
else {
const char *path, *bandwidth;
off_t bytes;
char *e;
e = strchr(eq, ' ');
if (e) {
path = strndupa(eq, e - eq);
bandwidth = e+1;
} else {
log_error("Failed to parse %s value %s.", field, eq);
return -EINVAL;
}
if (!path_startswith(path, "/dev")) {
log_error("%s is not a device file in /dev.", path);
return -EINVAL;
}
r = parse_bytes(bandwidth, &bytes);
if (r < 0) {
log_error("Failed to parse byte value %s.", bandwidth);
return -EINVAL;
}
r = sd_bus_message_append(m, "v", "a(st)", 1, path, (uint64_t) bytes);
}
} else if (streq(field, "BlockIODeviceWeight")) {
if (isempty(eq))
r = sd_bus_message_append(m, "v", "a(st)", 0);
else {
const char *path, *weight;
uint64_t u;
char *e;
e = strchr(eq, ' ');
if (e) {
path = strndupa(eq, e - eq);
weight = e+1;
} else {
log_error("Failed to parse %s value %s.", field, eq);
return -EINVAL;
}
if (!path_startswith(path, "/dev")) {
log_error("%s is not a device file in /dev.", path);
return -EINVAL;
}
r = safe_atou64(weight, &u);
if (r < 0) {
log_error("Failed to parse %s value %s.", field, weight);
return -EINVAL;
}
r = sd_bus_message_append(m, "v", "a(st)", path, u);
}
} else {
log_error("Unknown assignment %s.", assignment);
return -EINVAL;
}
if (r < 0)
return bus_log_create_error(r);
return 0;
}
static int set_property(sd_bus *bus, char **args) {
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *n = NULL;
char **i;
int r;
r = sd_bus_message_new_method_call(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"SetUnitProperties",
&m);
if (r < 0)
return bus_log_create_error(r);
n = unit_name_mangle(args[1]);
if (!n)
return log_oom();
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);
STRV_FOREACH(i, args + 2) {
r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
if (r < 0)
return bus_log_create_error(r);
r = append_assignment(m, *i);
if (r < 0)
return r;
r = sd_bus_message_close_container(m);
if (r < 0)
return bus_log_create_error(r);
}
r = sd_bus_message_close_container(m);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, NULL);
if (r < 0) {
log_error("Failed to set unit properties on %s: %s", n, bus_error_message(&error, r));
return r;
}
return 0;
}
static int snapshot(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ char *n = NULL, *id = NULL;
const char *path;
int r;
if (strv_length(args) > 1)
n = unit_name_mangle_with_suffix(args[1], ".snapshot");
else
n = strdup("");
if (!n)
return log_oom();
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"CreateSnapshot",
&error,
&reply,
"sb", n, false);
if (r < 0) {
log_error("Failed to create snapshot: %s", bus_error_message(&error, r));
return r;
}
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",
"Id",
&error,
&id);
if (r < 0) {
log_error("Failed to get ID of snapshot: %s", bus_error_message(&error, r));
return r;
}
if (!arg_quiet)
puts(id);
return 0;
}
static int delete_snapshot(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
char **name;
int r;
assert(args);
STRV_FOREACH(name, args+1) {
_cleanup_free_ char *n = NULL;
n = unit_name_mangle_with_suffix(*name, ".snapshot");
if (!n)
return log_oom();
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"RemoveSnapshot",
&error,
NULL,
"s", n);
if (r < 0) {
log_error("Failed to remove snapshot %s: %s", n, bus_error_message(&error, r));
return r;
}
}
return 0;
}
static int daemon_reload(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
const char *method;
int r;
if (arg_action == ACTION_RELOAD)
method = "Reload";
else if (arg_action == ACTION_REEXEC)
method = "Reexecute";
else {
assert(arg_action == ACTION_SYSTEMCTL);
method =
streq(args[0], "clear-jobs") ||
streq(args[0], "cancel") ? "ClearJobs" :
streq(args[0], "daemon-reexec") ? "Reexecute" :
streq(args[0], "reset-failed") ? "ResetFailed" :
streq(args[0], "halt") ? "Halt" :
streq(args[0], "poweroff") ? "PowerOff" :
streq(args[0], "reboot") ? "Reboot" :
streq(args[0], "kexec") ? "KExec" :
streq(args[0], "exit") ? "Exit" :
/* "daemon-reload" */ "Reload";
}
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
method,
&error,
NULL,
NULL);
if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
/* There's always a fallback possible for
* legacy actions. */
r = -EADDRNOTAVAIL;
else if ((r == -ETIMEDOUT || r == -ECONNRESET) && streq(method, "Reexecute"))
/* On reexecution, we expect a disconnect, not a
* reply */
r = 0;
else if (r < 0)
log_error("Failed to execute operation: %s", bus_error_message(&error, r));
return r < 0 ? r : 0;
}
static int reset_failed(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
char **name;
int r;
if (strv_length(args) <= 1)
return daemon_reload(bus, args);
STRV_FOREACH(name, args+1) {
_cleanup_free_ char *n;
n = unit_name_mangle(*name);
if (!n)
return log_oom();
r = sd_bus_call_method(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ResetFailedUnit",
&error,
NULL,
"s", n);
if (r < 0) {
log_error("Failed to reset failed state of unit %s: %s", n, bus_error_message(&error, r));
return r;
}
}
return 0;
}
static int show_environment(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
const char *text;
int r;
pager_open_if_enabled();
r = sd_bus_get_property(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"Environment",
&error,
&reply,
"as");
if (r < 0) {
log_error("Failed to get environment: %s", bus_error_message(&error, r));
return 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(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *init = NULL;
const char *root;
unsigned l;
int r;
l = strv_length(args);
if (l < 2 || l > 3) {
log_error("Wrong number of arguments.");
return -EINVAL;
}
root = args[1];
if (l >= 3)
init = strdup(args[2]);
else {
parse_env_file("/proc/cmdline", WHITESPACE,
"init", &init,
NULL);
if (!init)
init = strdup("");
}
if (!init)
return log_oom();
log_debug("switching root - root: %s; init: %s", root, 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) {
log_error("Failed to switch root: %s", bus_error_message(&error, r));
return r;
}
return 0;
}
static int set_environment(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
const char *method;
int r;
assert(bus);
assert(args);
method = streq(args[0], "set-environment")
? "SetEnvironment"
: "UnsetEnvironment";
r = sd_bus_message_new_method_call(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
method,
&m);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, args + 1);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_call(bus, m, 0, &error, NULL);
if (r < 0) {
log_error("Failed to set environment: %s", bus_error_message(&error, r));
return r;
}
return 0;
}
static int enable_sysv_units(const char *verb, char **args) {
int r = 0;
#if defined(HAVE_SYSV_COMPAT) && defined(HAVE_CHKCONFIG)
unsigned f = 1, t = 1;
_cleanup_lookup_paths_free_ LookupPaths paths = {};
if (arg_scope != UNIT_FILE_SYSTEM)
return 0;
if (!streq(verb, "enable") &&
!streq(verb, "disable") &&
!streq(verb, "is-enabled"))
return 0;
/* Processes all SysV units, and reshuffles the array so that
* afterwards only the native units remain */
r = lookup_paths_init(&paths, SYSTEMD_SYSTEM, false, NULL, NULL, NULL);
if (r < 0)
return r;
r = 0;
for (f = 0; args[f]; f++) {
const char *name;
_cleanup_free_ char *p = NULL, *q = NULL;
bool found_native = false, found_sysv;
unsigned c = 1;
const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
char **k, *l;
int j;
pid_t pid;
siginfo_t status;
name = args[f];
if (!endswith(name, ".service"))
continue;
if (path_is_absolute(name))
continue;
STRV_FOREACH(k, paths.unit_path) {
if (!isempty(arg_root))
asprintf(&p, "%s/%s/%s", arg_root, *k, name);
else
asprintf(&p, "%s/%s", *k, name);
if (!p) {
r = log_oom();
goto finish;
}
found_native = access(p, F_OK) >= 0;
free(p);
p = NULL;
if (found_native)
break;
}
if (found_native)
continue;
if (!isempty(arg_root))
asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
else
asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
if (!p) {
r = log_oom();
goto finish;
}
p[strlen(p) - sizeof(".service") + 1] = 0;
found_sysv = access(p, F_OK) >= 0;
if (!found_sysv)
continue;
/* Mark this entry, so that we don't try enabling it as native unit */
args[f] = (char*) "";
log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
if (!isempty(arg_root))
argv[c++] = q = strappend("--root=", arg_root);
argv[c++] = path_get_file_name(p);
argv[c++] =
streq(verb, "enable") ? "on" :
streq(verb, "disable") ? "off" : "--level=5";
argv[c] = NULL;
l = strv_join((char**)argv, " ");
if (!l) {
r = log_oom();
goto finish;
}
log_info("Executing %s", l);
free(l);
pid = fork();
if (pid < 0) {
log_error("Failed to fork: %m");
r = -errno;
goto finish;
} else if (pid == 0) {
/* Child */
execv(argv[0], (char**) argv);
_exit(EXIT_FAILURE);
}
j = wait_for_terminate(pid, &status);
if (j < 0) {
log_error("Failed to wait for child: %s", strerror(-r));
r = j;
goto finish;
}
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) {
r = -EINVAL;
goto finish;
}
} else {
r = -EPROTO;
goto finish;
}
}
finish:
/* Drop all SysV units */
for (f = 0, t = 0; args[f]; f++) {
if (isempty(args[f]))
continue;
args[t++] = args[f];
}
args[t] = NULL;
#endif
return r;
}
static int mangle_names(char **original_names, char ***mangled_names) {
char **i, **l, **name;
l = new(char*, strv_length(original_names) + 1);
if (!l)
return log_oom();
i = l;
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);
else
*i = unit_name_mangle(*name);
if (!*i) {
strv_free(l);
return log_oom();
}
i++;
}
*i = NULL;
*mangled_names = l;
return 0;
}
static int enable_unit(sd_bus *bus, char **args) {
_cleanup_strv_free_ char **mangled_names = NULL;
const char *verb = args[0];
UnitFileChange *changes = NULL;
unsigned n_changes = 0;
int carries_install_info = -1;
int r;
if (!args[1])
return 0;
r = mangle_names(args+1, &mangled_names);
if (r < 0)
return r;
r = enable_sysv_units(verb, mangled_names);
if (r < 0)
return r;
if (!bus || avoid_bus()) {
if (streq(verb, "enable")) {
r = unit_file_enable(arg_scope, arg_runtime, arg_root, mangled_names, arg_force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(verb, "disable"))
r = unit_file_disable(arg_scope, arg_runtime, arg_root, mangled_names, &changes, &n_changes);
else if (streq(verb, "reenable")) {
r = unit_file_reenable(arg_scope, arg_runtime, arg_root, mangled_names, arg_force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(verb, "link"))
r = unit_file_link(arg_scope, arg_runtime, arg_root, mangled_names, arg_force, &changes, &n_changes);
else if (streq(verb, "preset")) {
r = unit_file_preset(arg_scope, arg_runtime, arg_root, mangled_names, arg_force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(verb, "mask"))
r = unit_file_mask(arg_scope, arg_runtime, arg_root, mangled_names, arg_force, &changes, &n_changes);
else if (streq(verb, "unmask"))
r = unit_file_unmask(arg_scope, arg_runtime, arg_root, mangled_names, &changes, &n_changes);
else
assert_not_reached("Unknown verb");
if (r < 0) {
log_error("Operation failed: %s", strerror(-r));
goto finish;
}
if (!arg_quiet)
dump_unit_file_changes(changes, n_changes);
r = 0;
} else {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
int expect_carries_install_info = false;
bool send_force = true;
const char *method;
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")) {
method = "PresetUnitFiles";
expect_carries_install_info = true;
} else if (streq(verb, "mask"))
method = "MaskUnitFiles";
else if (streq(verb, "unmask")) {
method = "UnmaskUnitFiles";
send_force = false;
} else
assert_not_reached("Unknown verb");
r = sd_bus_message_new_method_call(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
method,
&m);
if (r < 0)
return bus_log_create_error(r);
r = sd_bus_message_append_strv(m, mangled_names);
if (r < 0)
return bus_log_create_error(r);
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) {
log_error("Failed to execute operation: %s", bus_error_message(&error, r));
return 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 = deserialize_and_dump_unit_file_changes(m);
if (r < 0)
return r;
/* Try to reload if enabeld */
if (!arg_no_reload)
r = daemon_reload(bus, args);
else
r = 0;
}
if (carries_install_info == 0)
log_warning("The unit files have no [Install] section. They are not meant to be enabled\n"
"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");
finish:
unit_file_changes_free(changes, n_changes);
return r;
}
static int unit_is_enabled(sd_bus *bus, char **args) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_strv_free_ char **mangled_names = NULL;
bool enabled;
char **name;
int r;
r = mangle_names(args+1, &mangled_names);
if (r < 0)
return r;
r = enable_sysv_units(args[0], mangled_names);
if (r < 0)
return r;
enabled = r > 0;
if (!bus || avoid_bus()) {
STRV_FOREACH(name, mangled_names) {
UnitFileState state;
state = unit_file_get_state(arg_scope, arg_root, *name);
if (state < 0) {
log_error("Failed to get unit file state for %s: %s", *name, strerror(-state));
return state;
}
if (state == UNIT_FILE_ENABLED ||
state == UNIT_FILE_ENABLED_RUNTIME ||
state == UNIT_FILE_STATIC)
enabled = true;
if (!arg_quiet)
puts(unit_file_state_to_string(state));
}
} else {
STRV_FOREACH(name, mangled_names) {
_cleanup_bus_message_unref_ 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) {
log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
return r;
}
r = sd_bus_message_read(reply, "s", &s);
if (r < 0)
return bus_log_parse_error(r);
if (streq(s, "enabled") ||
streq(s, "enabled-runtime") ||
streq(s, "static"))
enabled = true;
if (!arg_quiet)
puts(s);
}
}
return !enabled;
}
static int systemctl_help(void) {
pager_open_if_enabled();
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 only units of a particular type\n"
" --state=STATE List only units with particular LOAD or SUB or ACTIVE state\n"
" -p --property=NAME Show only properties by this name\n"
" -a --all Show all loaded units/properties, including dead/empty\n"
" ones. To list all units installed on the system, use\n"
" the 'list-unit-files' command instead.\n"
" --reverse Show reverse dependencies with 'list-dependencies'\n"
" -l --full Don't ellipsize unit names on output\n"
" --fail When queueing a new job, fail if conflicting jobs are\n"
" pending\n"
" --irreversible When queueing a new job, make sure it cannot be implicitly\n"
" cancelled\n"
" --ignore-dependencies\n"
" When queueing a new job, ignore all its dependencies\n"
" --show-types When showing sockets, explicitly show their type\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"
" -q --quiet Suppress output\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 When enabling/disabling unit files, don't reload daemon\n"
" configuration\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"
" --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-monotonic,\n"
" verbose, export, json, json-pretty, json-sse, cat)\n\n"
"Unit Commands:\n"
" list-units List loaded units\n"
" list-sockets List loaded sockets ordered by address\n"
" list-timers List loaded timers ordered 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"
" reload-or-try-restart [NAME...] Reload one or more units if possible,\n"
" otherwise restart if active\n"
" isolate [NAME] Start one unit and stop all others\n"
" kill [NAME...] Send signal to processes of a unit\n"
" is-active [NAME...] Check whether units are active\n"
" is-failed [NAME...] Check whether units are failed\n"
" status [NAME...|PID...] Show runtime status of one or more units\n"
" show [NAME...|JOB...] Show properties of one or more\n"
" units/jobs or the manager\n"
" set-property [NAME] [ASSIGNMENT...]\n"
" Sets one or more properties of a unit\n"
" help [NAME...|PID...] Show manual for one or more units\n"
" reset-failed [NAME...] 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 List installed unit files\n"
" enable [NAME...] 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"
" is-enabled [NAME...] Check whether unit files are enabled\n\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"
" get-default Get the name of the default target\n"
" set-default NAME Set the default target\n\n"
"Job Commands:\n"
" list-jobs List jobs\n"
" cancel [JOB...] Cancel all, one, or more jobs\n\n"
"Snapshot Commands:\n"
" snapshot [NAME] Create a snapshot\n"
" delete [NAME...] Remove one or more snapshots\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\n"
"Manager Lifecycle Commands:\n"
" daemon-reload Reload systemd manager configuration\n"
" daemon-reexec Reexecute systemd manager\n\n"
"System Commands:\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 Request user instance 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);
return 0;
}
static int 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");
return 0;
}
static int 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);
return 0;
}
static int 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);
return 0;
}
static int 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);
return 0;
}
static int help_types(void) {
int i;
const char *t;
puts("Available unit types:");
for(i = 0; i < _UNIT_TYPE_MAX; i++) {
t = unit_type_to_string(i);
if (t)
puts(t);
}
return 0;
}
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_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
};
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' },
{ "fail", no_argument, NULL, ARG_FAIL },
{ "irreversible", no_argument, NULL, ARG_IRREVERSIBLE },
{ "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES },
{ "ignore-inhibitors", no_argument, NULL, 'i' },
{ "user", no_argument, NULL, ARG_USER },
{ "system", no_argument, NULL, ARG_SYSTEM },
{ "global", no_argument, NULL, ARG_GLOBAL },
{ "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 },
{}
};
int c;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:i", options, NULL)) >= 0) {
switch (c) {
case 'h':
return systemctl_help();
case ARG_VERSION:
puts(PACKAGE_STRING);
puts(SYSTEMD_FEATURES);
return 0;
case 't': {
char *word, *state;
size_t size;
FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
_cleanup_free_ char *type;
type = strndup(word, size);
if (!type)
return -ENOMEM;
if (streq(type, "help")) {
help_types();
return 0;
}
if (unit_type_from_string(type) >= 0) {
if (strv_push(&arg_types, type))
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(optarg) >= 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 {
char *word, *state;
size_t size;
FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
char *prop;
prop = strndup(word, size);
if (!prop)
return log_oom();
if (strv_push(&arg_properties, prop) < 0) {
free(prop);
return log_oom();
}
}
}
/* 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_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_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:
arg_root = optarg;
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':
if ((arg_signal = signal_from_string_try_harder(optarg)) < 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_CONTAINER;
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_STATE: {
char *word, *state;
size_t size;
FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
char *s;
s = strndup(word, size);
if (!s)
return log_oom();
if (strv_push(&arg_states, s) < 0) {
free(s);
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;
}
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-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:
return halt_help();
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 ARG_NO_WALL:
arg_no_wall = true;
break;
case 'i':
case 'h':
case 'n':
/* Compatibility nops */
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
}
if (arg_action == ACTION_REBOOT && argc == optind + 1) {
r = write_string_file(REBOOT_PARAM_FILE, argv[optind]);
if (r < 0) {
log_error("Failed to write reboot param to "
REBOOT_PARAM_FILE": %s", strerror(-r));
return r;
}
} else if (optind < argc) {
log_error("Too many arguments.");
return -EINVAL;
}
return 1;
}
static int parse_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 },
{}
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
switch (c) {
case ARG_HELP:
return shutdown_help();
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':
/* 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_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 */
arg_wall = argv + optind;
else if (argc > optind + 1)
/* We skip the time argument */
arg_wall = argv + optind + 1;
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:
return telinit_help();
case ARG_NO_WALL:
arg_no_wall = true;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
}
if (optind >= argc) {
telinit_help();
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:
return 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);
}
_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];
}
static int talk_initctl(void) {
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;
log_error("Failed to open "INIT_FIFO": %m");
return -errno;
}
errno = 0;
r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
if (r) {
log_error("Failed to write to "INIT_FIFO": %m");
return errno > 0 ? -errno : -EIO;
}
return 1;
}
static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
static const struct {
const char* verb;
const enum {
MORE,
LESS,
EQUAL
} argc_cmp;
const int argc;
int (* const dispatch)(sd_bus *bus, char **args);
} verbs[] = {
{ "list-units", LESS, 1, list_units },
{ "list-unit-files", EQUAL, 1, list_unit_files },
{ "list-sockets", LESS, 1, list_sockets },
{ "list-timers", LESS, 1, list_timers },
{ "list-jobs", EQUAL, 1, list_jobs },
{ "clear-jobs", EQUAL, 1, daemon_reload },
{ "cancel", MORE, 2, cancel_job },
{ "start", MORE, 2, start_unit },
{ "stop", MORE, 2, start_unit },
{ "condstop", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
{ "reload", MORE, 2, start_unit },
{ "restart", MORE, 2, start_unit },
{ "try-restart", MORE, 2, start_unit },
{ "reload-or-restart", MORE, 2, start_unit },
{ "reload-or-try-restart", MORE, 2, start_unit },
{ "force-reload", MORE, 2, start_unit }, /* For compatibility with SysV */
{ "condreload", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
{ "condrestart", MORE, 2, start_unit }, /* For compatibility with RH */
{ "isolate", EQUAL, 2, start_unit },
{ "kill", MORE, 2, kill_unit },
{ "is-active", MORE, 2, check_unit_active },
{ "check", MORE, 2, check_unit_active },
{ "is-failed", MORE, 2, check_unit_failed },
{ "show", MORE, 1, show },
{ "status", MORE, 1, show },
{ "help", MORE, 2, show },
{ "snapshot", LESS, 2, snapshot },
{ "delete", MORE, 2, delete_snapshot },
{ "daemon-reload", EQUAL, 1, daemon_reload },
{ "daemon-reexec", EQUAL, 1, daemon_reload },
{ "show-environment", EQUAL, 1, show_environment },
{ "set-environment", MORE, 2, set_environment },
{ "unset-environment", MORE, 2, set_environment },
{ "halt", EQUAL, 1, start_special },
{ "poweroff", EQUAL, 1, start_special },
{ "reboot", EQUAL, 1, start_special },
{ "kexec", EQUAL, 1, start_special },
{ "suspend", EQUAL, 1, start_special },
{ "hibernate", EQUAL, 1, start_special },
{ "hybrid-sleep", EQUAL, 1, start_special },
{ "default", EQUAL, 1, start_special },
{ "rescue", EQUAL, 1, start_special },
{ "emergency", EQUAL, 1, start_special },
{ "exit", EQUAL, 1, start_special },
{ "reset-failed", MORE, 1, reset_failed },
{ "enable", MORE, 2, enable_unit },
{ "disable", MORE, 2, enable_unit },
{ "is-enabled", MORE, 2, unit_is_enabled },
{ "reenable", MORE, 2, enable_unit },
{ "preset", MORE, 2, enable_unit },
{ "mask", MORE, 2, enable_unit },
{ "unmask", MORE, 2, enable_unit },
{ "link", MORE, 2, enable_unit },
{ "switch-root", MORE, 2, switch_root },
{ "list-dependencies", LESS, 2, list_dependencies },
{ "set-default", EQUAL, 2, set_default },
{ "get-default", EQUAL, 1, get_default },
{ "set-property", MORE, 3, set_property },
};
int left;
unsigned i;
assert(argc >= 0);
assert(argv);
left = argc - optind;
if (left <= 0)
/* Special rule: no arguments means "list-units" */
i = 0;
else {
if (streq(argv[optind], "help") && !argv[optind+1]) {
log_error("This command expects one or more "
"unit names. Did you mean --help?");
return -EINVAL;
}
for (i = 0; i < ELEMENTSOF(verbs); i++)
if (streq(argv[optind], verbs[i].verb))
break;
if (i >= ELEMENTSOF(verbs)) {
log_error("Unknown operation '%s'.", argv[optind]);
return -EINVAL;
}
}
switch (verbs[i].argc_cmp) {
case EQUAL:
if (left != verbs[i].argc) {
log_error("Invalid number of arguments.");
return -EINVAL;
}
break;
case MORE:
if (left < verbs[i].argc) {
log_error("Too few arguments.");
return -EINVAL;
}
break;
case LESS:
if (left > verbs[i].argc) {
log_error("Too many arguments.");
return -EINVAL;
}
break;
default:
assert_not_reached("Unknown comparison operator.");
}
/* Require a bus connection for all operations but
* enable/disable */
if (!streq(verbs[i].verb, "enable") &&
!streq(verbs[i].verb, "disable") &&
!streq(verbs[i].verb, "is-enabled") &&
!streq(verbs[i].verb, "list-unit-files") &&
!streq(verbs[i].verb, "reenable") &&
!streq(verbs[i].verb, "preset") &&
!streq(verbs[i].verb, "mask") &&
!streq(verbs[i].verb, "unmask") &&
!streq(verbs[i].verb, "link") &&
!streq(verbs[i].verb, "set-default") &&
!streq(verbs[i].verb, "get-default")) {
if (running_in_chroot() > 0) {
log_info("Running in chroot, ignoring request.");
return 0;
}
if (((!streq(verbs[i].verb, "reboot") &&
!streq(verbs[i].verb, "halt") &&
!streq(verbs[i].verb, "poweroff")) || arg_force <= 0) && !bus) {
log_error("Failed to get D-Bus connection: %s", strerror (-bus_error));
return -EIO;
}
} else {
if (!bus && !avoid_bus()) {
log_error("Failed to get D-Bus connection: %s", strerror (-bus_error));
return -EIO;
}
}
return verbs[i].dispatch(bus, argv + optind);
}
static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
struct sd_shutdown_command c = {
.usec = t,
.mode = mode,
.dry_run = dry_run,
.warn_wall = warn,
};
union sockaddr_union sockaddr = {
.un.sun_family = AF_UNIX,
.un.sun_path = "/run/systemd/shutdownd",
};
struct iovec iovec[2] = {{
.iov_base = (char*) &c,
.iov_len = offsetof(struct sd_shutdown_command, wall_message),
}};
struct msghdr msghdr = {
.msg_name = &sockaddr,
.msg_namelen = offsetof(struct sockaddr_un, sun_path)
+ sizeof("/run/systemd/shutdownd") - 1,
.msg_iov = iovec,
.msg_iovlen = 1,
};
_cleanup_close_ int fd;
fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
if (fd < 0)
return -errno;
if (!isempty(message)) {
iovec[1].iov_base = (char*) message;
iovec[1].iov_len = strlen(message);
msghdr.msg_iovlen++;
}
if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0)
return -errno;
return 0;
}
static int reload_with_fallback(sd_bus *bus) {
if (bus) {
/* First, try systemd via D-Bus. */
if (daemon_reload(bus, NULL) >= 0)
return 0;
}
/* Nothing else worked, so let's try signals */
assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
log_error("kill() failed: %m");
return -errno;
}
return 0;
}
static int start_with_fallback(sd_bus *bus) {
if (bus) {
/* First, try systemd via D-Bus. */
if (start_unit(bus, NULL) >= 0)
goto done;
}
/* Nothing else worked, so let's try
* /dev/initctl */
if (talk_initctl() > 0)
goto done;
log_error("Failed to talk to init daemon.");
return -EIO;
done:
warn_wall(arg_action);
return 0;
}
static int halt_now(enum action a) {
/* Make sure C-A-D is handled by the kernel from this
* point on... */
reboot(RB_ENABLE_CAD);
switch (a) {
case ACTION_HALT:
log_info("Halting.");
reboot(RB_HALT_SYSTEM);
return -errno;
case ACTION_POWEROFF:
log_info("Powering off.");
reboot(RB_POWER_OFF);
return -errno;
case ACTION_REBOOT: {
_cleanup_free_ char *param = NULL;
if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
log_info("Rebooting with argument '%s'.", param);
syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
LINUX_REBOOT_CMD_RESTART2, param);
}
log_info("Rebooting.");
reboot(RB_AUTOBOOT);
return -errno;
}
default:
assert_not_reached("Unknown action.");
}
}
static int halt_main(sd_bus *bus) {
int r;
r = check_inhibitors(bus, arg_action);
if (r < 0)
return r;
if (geteuid() != 0) {
/* Try logind if we are a normal user and no special
* mode applies. Maybe PolicyKit allows us to shutdown
* the machine. */
if (arg_when <= 0 &&
!arg_dry &&
arg_force <= 0 &&
(arg_action == ACTION_POWEROFF ||
arg_action == ACTION_REBOOT)) {
r = reboot_with_logind(bus, arg_action);
if (r >= 0)
return r;
}
log_error("Must be root.");
return -EPERM;
}
if (arg_when > 0) {
_cleanup_free_ char *m;
m = strv_join(arg_wall, " ");
if (!m)
return log_oom();
r = send_shutdownd(arg_when,
arg_action == ACTION_HALT ? 'H' :
arg_action == ACTION_POWEROFF ? 'P' :
arg_action == ACTION_KEXEC ? 'K' :
'r',
arg_dry,
!arg_no_wall,
m);
if (r < 0)
log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
else {
char date[FORMAT_TIMESTAMP_MAX];
log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
format_timestamp(date, sizeof(date), arg_when));
return 0;
}
}
if (!arg_dry && !arg_force)
return start_with_fallback(bus);
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("Failed to write utmp record: %s", strerror(-r));
}
}
if (arg_dry)
return 0;
r = halt_now(arg_action);
log_error("Failed to reboot: %s", strerror(-r));
return r;
}
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;
}
int main(int argc, char*argv[]) {
_cleanup_bus_unref_ sd_bus *bus = NULL;
int r;
setlocale(LC_ALL, "");
log_parse_environment();
log_open();
/* 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;
/* /sbin/runlevel doesn't need to communicate via D-Bus, so
* let's shortcut this */
if (arg_action == ACTION_RUNLEVEL) {
r = runlevel_main();
goto finish;
}
if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
log_info("Running in chroot, ignoring request.");
r = 0;
goto finish;
}
if (!avoid_bus())
r = bus_open_transport_systemd(arg_transport, arg_host, arg_scope != UNIT_FILE_SYSTEM, &bus);
/* 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(bus, argc, argv, r);
break;
case ACTION_HALT:
case ACTION_POWEROFF:
case ACTION_REBOOT:
case ACTION_KEXEC:
r = halt_main(bus);
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(bus);
break;
case ACTION_RELOAD:
case ACTION_REEXEC:
r = reload_with_fallback(bus);
break;
case ACTION_CANCEL_SHUTDOWN: {
_cleanup_free_ char *m = NULL;
if (arg_wall) {
m = strv_join(arg_wall, " ");
if (!m) {
r = log_oom();
goto finish;
}
}
r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
if (r < 0)
log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
break;
}
case ACTION_RUNLEVEL:
case _ACTION_INVALID:
default:
assert_not_reached("Unknown action");
}
finish:
pager_close();
ask_password_agent_close();
polkit_agent_close();
strv_free(arg_types);
strv_free(arg_states);
strv_free(arg_properties);
return r < 0 ? EXIT_FAILURE : r;
}
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