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src.rivoreo.one / systemd-stable / v31 / . / src / 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
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/reboot.h>
#include <stdio.h>
#include <getopt.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 <dbus/dbus.h>
#include "log.h"
#include "util.h"
#include "macro.h"
#include "set.h"
#include "utmp-wtmp.h"
#include "special.h"
#include "initreq.h"
#include "strv.h"
#include "dbus-common.h"
#include "cgroup-show.h"
#include "cgroup-util.h"
#include "list.h"
#include "path-lookup.h"
#include "conf-parser.h"
#include "sd-daemon.h"
#include "shutdownd.h"
#include "exit-status.h"
#include "bus-errors.h"
#include "build.h"
#include "unit-name.h"
#include "pager.h"
#include "spawn-agent.h"
#include "install.h"
static const char *arg_type = NULL;
static char **arg_property = NULL;
static bool arg_all = false;
static const char *arg_job_mode = "replace";
static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
static bool arg_immediate = false;
static bool arg_no_block = false;
static bool arg_no_pager = false;
static bool arg_no_wtmp = false;
static bool arg_no_sync = false;
static bool arg_no_wall = false;
static bool arg_no_reload = false;
static bool arg_dry = false;
static bool arg_quiet = false;
static bool arg_full = false;
static bool arg_force = false;
static bool arg_ask_password = false;
static bool arg_failed = false;
static bool arg_runtime = false;
static char **arg_wall = NULL;
static const char *arg_kill_who = NULL;
static const char *arg_kill_mode = 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_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 enum dot {
DOT_ALL,
DOT_ORDER,
DOT_REQUIRE
} arg_dot = DOT_ALL;
static enum transport {
TRANSPORT_NORMAL,
TRANSPORT_SSH,
TRANSPORT_POLKIT
} arg_transport = TRANSPORT_NORMAL;
static const char *arg_host = NULL;
static bool private_bus = false;
static int daemon_reload(DBusConnection *bus, char **args);
static bool on_tty(void) {
static int t = -1;
/* Note that this is invoked relatively early, before we start
* the pager. That means the value we return reflects whether
* we originally were started on a tty, not if we currently
* are. But this is intended, since we want colour and so on
* when run in our own pager. */
if (_unlikely_(t < 0))
t = isatty(STDOUT_FILENO) > 0;
return t;
}
static void pager_open_if_enabled(void) {
on_tty();
if (arg_no_pager)
return;
pager_open();
}
static void 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;
agent_open();
}
static const char *ansi_highlight(bool b) {
if (!on_tty())
return "";
return b ? ANSI_HIGHLIGHT_ON : ANSI_HIGHLIGHT_OFF;
}
static const char *ansi_highlight_green(bool b) {
if (!on_tty())
return "";
return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
}
static bool error_is_no_service(const DBusError *error) {
assert(error);
if (!dbus_error_is_set(error))
return false;
if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
return true;
if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
return true;
return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
}
static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
assert(error);
if (!dbus_error_is_set(error))
return r;
if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
return EXIT_NOPERMISSION;
if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
return EXIT_NOTINSTALLED;
if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
return EXIT_NOTIMPLEMENTED;
if (dbus_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 action) {
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!"
};
if (arg_no_wall)
return;
if (arg_wall) {
char *p;
if (!(p = strv_join(arg_wall, " "))) {
log_error("Failed to join strings.");
return;
}
if (*p) {
utmp_wall(p, NULL);
free(p);
return;
}
free(p);
}
if (!table[action])
return;
utmp_wall(table[action], 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;
}
struct unit_info {
const char *id;
const char *description;
const char *load_state;
const char *active_state;
const char *sub_state;
const char *following;
const char *unit_path;
uint32_t job_id;
const char *job_type;
const char *job_path;
};
static int compare_unit_info(const void *a, const void *b) {
const char *d1, *d2;
const struct unit_info *u = a, *v = b;
d1 = strrchr(u->id, '.');
d2 = strrchr(v->id, '.');
if (d1 && d2) {
int r;
if ((r = strcasecmp(d1, d2)) != 0)
return r;
}
return strcasecmp(u->id, v->id);
}
static bool output_show_unit(const struct unit_info *u) {
const char *dot;
if (arg_failed)
return streq(u->active_state, "failed");
return (!arg_type || ((dot = strrchr(u->id, '.')) &&
streq(dot+1, arg_type))) &&
(arg_all || !(streq(u->active_state, "inactive") || u->following[0]) || u->job_id > 0);
}
static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
unsigned active_len, sub_len, job_len, n_shown = 0;
const struct unit_info *u;
active_len = sizeof("ACTIVE")-1;
sub_len = sizeof("SUB")-1;
job_len = sizeof("JOB")-1;
for (u = unit_infos; u < unit_infos + c; u++) {
if (!output_show_unit(u))
continue;
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));
}
if (on_tty()) {
printf("%-25s %-6s %-*s %-*s %-*s", "UNIT", "LOAD",
active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
if (columns() >= 80+12 || arg_full || !arg_no_pager)
printf(" %s\n", "DESCRIPTION");
else
printf("\n");
}
for (u = unit_infos; u < unit_infos + c; u++) {
char *e;
int a = 0, b = 0;
const char *on_loaded, *off_loaded;
const char *on_active, *off_active;
if (!output_show_unit(u))
continue;
n_shown++;
if (!streq(u->load_state, "loaded") &&
!streq(u->load_state, "banned")) {
on_loaded = ansi_highlight(true);
off_loaded = ansi_highlight(false);
} else
on_loaded = off_loaded = "";
if (streq(u->active_state, "failed")) {
on_active = ansi_highlight(true);
off_active = ansi_highlight(false);
} else
on_active = off_active = "";
e = arg_full ? NULL : ellipsize(u->id, 25, 33);
printf("%-25s %s%-6s%s %s%-*s %-*s%s%n",
e ? e : u->id,
on_loaded, u->load_state, off_loaded,
on_active, active_len, u->active_state,
sub_len, u->sub_state, off_active,
&a);
free(e);
a -= strlen(on_loaded) + strlen(off_loaded);
a -= strlen(on_active) + strlen(off_active);
if (u->job_id != 0)
printf(" %-*s", job_len, u->job_type);
else
b = 1 + job_len;
if (a + b + 1 < columns()) {
if (u->job_id == 0)
printf(" %-*s", job_len, "");
if (arg_full || !arg_no_pager)
printf(" %s", u->description);
else
printf(" %.*s", columns() - a - b - 1, u->description);
}
fputs("\n", stdout);
}
if (on_tty()) {
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"
"JOB = Pending job for the unit.\n");
if (arg_all)
printf("\n%u units listed.\n", n_shown);
else
printf("\n%u units listed. Pass --all to see inactive units, too.\n", n_shown);
}
}
static int list_units(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
DBusMessageIter iter, sub, sub2;
unsigned c = 0, n_units = 0;
struct unit_info *unit_infos = NULL;
dbus_error_init(&error);
assert(bus);
pager_open_if_enabled();
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnits"))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
struct unit_info *u;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
if (c >= n_units) {
struct unit_info *w;
n_units = MAX(2*c, 16);
w = realloc(unit_infos, sizeof(struct unit_info) * n_units);
if (!w) {
log_error("Failed to allocate unit array.");
r = -ENOMEM;
goto finish;
}
unit_infos = w;
}
u = unit_infos+c;
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_next(&sub);
c++;
}
if (c > 0) {
qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
output_units_list(unit_infos, c);
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
free(unit_infos);
dbus_error_free(&error);
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(file_name_from_path(u->path), file_name_from_path(v->path));
}
static bool output_show_unit_file(const UnitFileList *u) {
const char *dot;
return !arg_type || ((dot = strrchr(u->path, '.')) && streq(dot+1, arg_type));
}
static void output_unit_file_list(const UnitFileList *units, unsigned c) {
unsigned n_shown = 0;
const UnitFileList *u;
if (on_tty())
printf("%-25s %-6s\n", "UNIT FILE", "STATE");
for (u = units; u < units + c; u++) {
char *e;
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) {
on = ansi_highlight(true);
off = ansi_highlight(false);
} else if (u->state == UNIT_FILE_ENABLED) {
on = ansi_highlight_green(true);
off = ansi_highlight_green(false);
} else
on = off = "";
id = file_name_from_path(u->path);
e = arg_full ? NULL : ellipsize(id, 25, 33);
printf("%-25s %s%-6s%s\n",
e ? e : id,
on, unit_file_state_to_string(u->state), off);
free(e);
}
if (on_tty())
printf("\n%u unit files listed.\n", n_shown);
}
static int list_unit_files(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
DBusMessageIter iter, sub, sub2;
unsigned c = 0, n_units = 0;
UnitFileList *units = NULL;
dbus_error_init(&error);
assert(bus);
pager_open_if_enabled();
if (avoid_bus()) {
Hashmap *h;
UnitFileList *u;
Iterator i;
h = hashmap_new(string_hash_func, string_compare_func);
if (!h) {
log_error("Out of memory");
return -ENOMEM;
}
r = unit_file_get_list(arg_scope, arg_root, h);
if (r < 0) {
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);
log_error("Out of memory");
return -ENOMEM;
}
HASHMAP_FOREACH(u, h, i) {
memcpy(units + c++, u, sizeof(UnitFileList));
free(u);
}
hashmap_free(h);
} else {
m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnitFiles");
if (!m) {
log_error("Could not allocate message.");
return -ENOMEM;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
UnitFileList *u;
const char *state;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
if (c >= n_units) {
UnitFileList *w;
n_units = MAX(2*c, 16);
w = realloc(units, sizeof(struct UnitFileList) * n_units);
if (!w) {
log_error("Failed to allocate unit array.");
r = -ENOMEM;
goto finish;
}
units = w;
}
u = units+c;
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
u->state = unit_file_state_from_string(state);
dbus_message_iter_next(&sub);
c++;
}
}
if (c > 0) {
qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
output_unit_file_list(units, c);
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
free(units);
dbus_error_free(&error);
return r;
}
static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
static const char * const colors[] = {
"Requires", "[color=\"black\"]",
"RequiresOverridable", "[color=\"black\"]",
"Requisite", "[color=\"darkblue\"]",
"RequisiteOverridable", "[color=\"darkblue\"]",
"Wants", "[color=\"darkgrey\"]",
"Conflicts", "[color=\"red\"]",
"ConflictedBy", "[color=\"red\"]",
"After", "[color=\"green\"]"
};
const char *c = NULL;
unsigned i;
assert(name);
assert(prop);
assert(iter);
for (i = 0; i < ELEMENTSOF(colors); i += 2)
if (streq(colors[i], prop)) {
c = colors[i+1];
break;
}
if (!c)
return 0;
if (arg_dot != DOT_ALL)
if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
return 0;
switch (dbus_message_iter_get_arg_type(iter)) {
case DBUS_TYPE_ARRAY:
if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
DBusMessageIter sub;
dbus_message_iter_recurse(iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
const char *s;
assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
dbus_message_iter_get_basic(&sub, &s);
printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
dbus_message_iter_next(&sub);
}
return 0;
}
}
return 0;
}
static int dot_one(DBusConnection *bus, const char *name, const char *path) {
DBusMessage *m = NULL, *reply = NULL;
const char *interface = "org.freedesktop.systemd1.Unit";
int r;
DBusError error;
DBusMessageIter iter, sub, sub2, sub3;
assert(bus);
assert(path);
dbus_error_init(&error);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"GetAll"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
const char *prop;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&sub2, &sub3);
if (dot_one_property(name, prop, &sub3)) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_next(&sub);
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int dot(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
DBusMessageIter iter, sub, sub2;
dbus_error_init(&error);
assert(bus);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListUnits"))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
printf("digraph systemd {\n");
dbus_message_iter_recurse(&iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
if ((r = dot_one(bus, id, unit_path)) < 0)
goto finish;
/* printf("\t\"%s\";\n", id); */
dbus_message_iter_next(&sub);
}
printf("}\n");
log_info(" Color legend: black = Requires\n"
" dark blue = Requisite\n"
" dark grey = Wants\n"
" red = Conflicts\n"
" green = After\n");
if (on_tty())
log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
"-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int list_jobs(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
DBusMessageIter iter, sub, sub2;
unsigned k = 0;
dbus_error_init(&error);
assert(bus);
pager_open_if_enabled();
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ListJobs"))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
if (on_tty())
printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
const char *name, *type, *state, *job_path, *unit_path;
uint32_t id;
char *e;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
e = arg_full ? NULL : ellipsize(name, 25, 33);
printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state);
free(e);
k++;
dbus_message_iter_next(&sub);
}
if (on_tty())
printf("\n%u jobs listed.\n", k);
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int load_unit(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
char **name;
dbus_error_init(&error);
assert(bus);
assert(args);
STRV_FOREACH(name, args+1) {
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"LoadUnit"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, name,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int cancel_job(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
char **name;
dbus_error_init(&error);
assert(bus);
assert(args);
if (strv_length(args) <= 1)
return daemon_reload(bus, args);
STRV_FOREACH(name, args+1) {
unsigned id;
const char *path;
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetJob"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if ((r = safe_atou(*name, &id)) < 0) {
log_error("Failed to parse job id: %s", strerror(-r));
goto finish;
}
assert_cc(sizeof(uint32_t) == sizeof(id));
if (!dbus_message_append_args(m,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Job",
"Cancel"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
dbus_message_unref(reply);
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
DBusMessage *m = NULL, *reply = NULL;
dbus_bool_t b = FALSE;
DBusMessageIter iter, sub;
const char
*interface = "org.freedesktop.systemd1.Unit",
*property = "NeedDaemonReload",
*path;
/* We ignore all errors here, since this is used to show a warning only */
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetUnit")))
goto finish;
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &unit,
DBUS_TYPE_INVALID))
goto finish;
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
goto finish;
if (!dbus_message_get_args(reply, NULL,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto finish;
dbus_message_unref(m);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"Get")))
goto finish;
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_STRING, &property,
DBUS_TYPE_INVALID)) {
goto finish;
}
dbus_message_unref(reply);
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
goto finish;
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
goto finish;
dbus_message_iter_recurse(&iter, &sub);
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
goto finish;
dbus_message_iter_get_basic(&sub, &b);
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
return b;
}
typedef struct WaitData {
Set *set;
char *result;
} WaitData;
static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
DBusError error;
WaitData *d = data;
assert(connection);
assert(message);
assert(d);
dbus_error_init(&error);
log_debug("Got D-Bus request: %s.%s() on %s",
dbus_message_get_interface(message),
dbus_message_get_member(message),
dbus_message_get_path(message));
if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
log_error("Warning! D-Bus connection terminated.");
dbus_connection_close(connection);
} else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
uint32_t id;
const char *path, *result;
dbus_bool_t success = true;
if (dbus_message_get_args(message, &error,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_STRING, &result,
DBUS_TYPE_INVALID)) {
char *p;
if ((p = set_remove(d->set, (char*) path)))
free(p);
if (*result)
d->result = strdup(result);
goto finish;
}
#ifndef LEGACY
dbus_error_free(&error);
if (dbus_message_get_args(message, &error,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_BOOLEAN, &success,
DBUS_TYPE_INVALID)) {
char *p;
/* Compatibility with older systemd versions <
* 19 during upgrades. This should be dropped
* one day */
if ((p = set_remove(d->set, (char*) path)))
free(p);
if (!success)
d->result = strdup("failed");
goto finish;
}
#endif
log_error("Failed to parse message: %s", bus_error_message(&error));
}
finish:
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
static int enable_wait_for_jobs(DBusConnection *bus) {
DBusError error;
assert(bus);
if (private_bus)
return 0;
dbus_error_init(&error);
dbus_bus_add_match(bus,
"type='signal',"
"sender='org.freedesktop.systemd1',"
"interface='org.freedesktop.systemd1.Manager',"
"member='JobRemoved',"
"path='/org/freedesktop/systemd1'",
&error);
if (dbus_error_is_set(&error)) {
log_error("Failed to add match: %s", bus_error_message(&error));
dbus_error_free(&error);
return -EIO;
}
/* This is slightly dirty, since we don't undo the match registrations. */
return 0;
}
static int wait_for_jobs(DBusConnection *bus, Set *s) {
int r;
WaitData d;
assert(bus);
assert(s);
zero(d);
d.set = s;
if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
log_error("Failed to add filter.");
r = -ENOMEM;
goto finish;
}
while (!set_isempty(s) &&
dbus_connection_read_write_dispatch(bus, -1))
;
if (!arg_quiet && d.result) {
if (streq(d.result, "timeout"))
log_error("Job timed out.");
else if (streq(d.result, "canceled"))
log_error("Job canceled.");
else if (streq(d.result, "dependency"))
log_error("A dependency job failed. See system logs for details.");
else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
log_error("Job failed. See system logs and 'systemctl status' for details.");
}
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;
else
r = 0;
free(d.result);
finish:
/* This is slightly dirty, since we don't undo the filter registration. */
return r;
}
static int start_unit_one(
DBusConnection *bus,
const char *method,
const char *name,
const char *mode,
DBusError *error,
Set *s) {
DBusMessage *m = NULL, *reply = NULL;
const char *path;
int r;
assert(bus);
assert(method);
assert(name);
assert(mode);
assert(error);
assert(arg_no_block || s);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
method))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &mode,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error))) {
if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(error)) {
/* There's always a fallback possible for
* legacy actions. */
r = -EADDRNOTAVAIL;
goto finish;
}
log_error("Failed to issue method call: %s", bus_error_message(error));
r = -EIO;
goto finish;
}
if (!dbus_message_get_args(reply, error,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(error));
r = -EIO;
goto finish;
}
if (need_daemon_reload(bus, name))
log_warning("Warning: Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
if (!arg_no_block) {
char *p;
if (!(p = strdup(path))) {
log_error("Failed to duplicate path.");
r = -ENOMEM;
goto finish;
}
if ((r = set_put(s, p)) < 0) {
free(p);
log_error("Failed to add path to set.");
goto finish;
}
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
return r;
}
static enum action verb_to_action(const char *verb) {
if (streq(verb, "halt"))
return ACTION_HALT;
else if (streq(verb, "poweroff"))
return ACTION_POWEROFF;
else if (streq(verb, "reboot"))
return ACTION_REBOOT;
else if (streq(verb, "kexec"))
return ACTION_KEXEC;
else if (streq(verb, "rescue"))
return ACTION_RESCUE;
else if (streq(verb, "emergency"))
return ACTION_EMERGENCY;
else if (streq(verb, "default"))
return ACTION_DEFAULT;
else if (streq(verb, "exit"))
return ACTION_EXIT;
else
return ACTION_INVALID;
}
static int start_unit(DBusConnection *bus, char **args) {
static const char * const table[_ACTION_MAX] = {
[ACTION_HALT] = SPECIAL_HALT_TARGET,
[ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
[ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
[ACTION_KEXEC] = SPECIAL_KEXEC_TARGET,
[ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
[ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
[ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
[ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
[ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
[ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
[ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET,
[ACTION_EXIT] = SPECIAL_EXIT_TARGET
};
int r, ret = 0;
const char *method, *mode, *one_name;
Set *s = NULL;
DBusError error;
char **name;
dbus_error_init(&error);
assert(bus);
agent_open_if_enabled();
if (arg_action == ACTION_SYSTEMCTL) {
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";
mode =
(streq(args[0], "isolate") ||
streq(args[0], "rescue") ||
streq(args[0], "emergency")) ? "isolate" : arg_job_mode;
one_name = table[verb_to_action(args[0])];
} else {
assert(arg_action < ELEMENTSOF(table));
assert(table[arg_action]);
method = "StartUnit";
mode = (arg_action == ACTION_EMERGENCY ||
arg_action == ACTION_RESCUE ||
arg_action == ACTION_RUNLEVEL2 ||
arg_action == ACTION_RUNLEVEL3 ||
arg_action == ACTION_RUNLEVEL4 ||
arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace";
one_name = table[arg_action];
}
if (!arg_no_block) {
if ((ret = enable_wait_for_jobs(bus)) < 0) {
log_error("Could not watch jobs: %s", strerror(-ret));
goto finish;
}
if (!(s = set_new(string_hash_func, string_compare_func))) {
log_error("Failed to allocate set.");
ret = -ENOMEM;
goto finish;
}
}
if (one_name) {
if ((ret = start_unit_one(bus, method, one_name, mode, &error, s)) <= 0)
goto finish;
} else {
STRV_FOREACH(name, args+1)
if ((r = start_unit_one(bus, method, *name, mode, &error, s)) != 0) {
ret = translate_bus_error_to_exit_status(r, &error);
dbus_error_free(&error);
}
}
if (!arg_no_block)
if ((r = wait_for_jobs(bus, s)) < 0) {
ret = r;
goto finish;
}
finish:
if (s)
set_free_free(s);
dbus_error_free(&error);
return ret;
}
static int start_special(DBusConnection *bus, char **args) {
int r;
assert(bus);
assert(args);
if (arg_force &&
(streq(args[0], "halt") ||
streq(args[0], "poweroff") ||
streq(args[0], "reboot") ||
streq(args[0], "kexec") ||
streq(args[0], "exit")))
return daemon_reload(bus, args);
r = start_unit(bus, args);
if (r >= 0)
warn_wall(verb_to_action(args[0]));
return r;
}
static int check_unit(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
const char
*interface = "org.freedesktop.systemd1.Unit",
*property = "ActiveState";
int r = 3; /* According to LSB: "program is not running" */
DBusError error;
char **name;
assert(bus);
assert(args);
dbus_error_init(&error);
STRV_FOREACH(name, args+1) {
const char *path = NULL;
const char *state;
DBusMessageIter iter, sub;
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetUnit"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, name,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
/* Hmm, cannot figure out anything about this unit... */
if (!arg_quiet)
puts("unknown");
dbus_error_free(&error);
dbus_message_unref(m);
m = NULL;
continue;
}
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"Get"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_STRING, &property,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
dbus_message_unref(reply);
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_get_basic(&sub, &state);
if (!arg_quiet)
puts(state);
if (streq(state, "active") || streq(state, "reloading"))
r = 0;
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int kill_unit(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
int r = 0;
DBusError error;
char **name;
assert(bus);
assert(args);
dbus_error_init(&error);
if (!arg_kill_who)
arg_kill_who = "all";
if (!arg_kill_mode)
arg_kill_mode = streq(arg_kill_who, "all") ? "control-group" : "process";
STRV_FOREACH(name, args+1) {
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"KillUnit"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, name,
DBUS_TYPE_STRING, &arg_kill_who,
DBUS_TYPE_STRING, &arg_kill_mode,
DBUS_TYPE_INT32, &arg_signal,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
dbus_error_free(&error);
r = -EIO;
}
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
m = reply = NULL;
}
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
typedef struct ExecStatusInfo {
char *name;
char *path;
char **argv;
bool ignore;
usec_t start_timestamp;
usec_t exit_timestamp;
pid_t pid;
int code;
int status;
LIST_FIELDS(struct ExecStatusInfo, exec);
} ExecStatusInfo;
static void exec_status_info_free(ExecStatusInfo *i) {
assert(i);
free(i->name);
free(i->path);
strv_free(i->argv);
free(i);
}
static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
DBusMessageIter sub2, sub3;
const char*path;
unsigned n;
uint32_t pid;
int32_t code, status;
dbus_bool_t ignore;
assert(i);
assert(i);
if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
return -EIO;
dbus_message_iter_recurse(sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
return -EIO;
if (!(i->path = strdup(path)))
return -ENOMEM;
if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
return -EIO;
n = 0;
dbus_message_iter_recurse(&sub2, &sub3);
while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
dbus_message_iter_next(&sub3);
n++;
}
if (!(i->argv = new0(char*, n+1)))
return -ENOMEM;
n = 0;
dbus_message_iter_recurse(&sub2, &sub3);
while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
const char *s;
assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
dbus_message_iter_get_basic(&sub3, &s);
dbus_message_iter_next(&sub3);
if (!(i->argv[n++] = strdup(s)))
return -ENOMEM;
}
if (!dbus_message_iter_next(&sub2) ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
return -EIO;
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;
return 0;
}
typedef struct UnitStatusInfo {
const char *id;
const char *load_state;
const char *active_state;
const char *sub_state;
const char *description;
const char *following;
const char *path;
const char *default_control_group;
usec_t inactive_exit_timestamp;
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;
bool running:1;
#ifdef HAVE_SYSV_COMPAT
bool is_sysv:1;
#endif
usec_t start_timestamp;
usec_t exit_timestamp;
int exit_code, exit_status;
usec_t condition_timestamp;
bool condition_result;
/* Socket */
unsigned n_accepted;
unsigned n_connections;
bool accept;
/* 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) {
ExecStatusInfo *p;
const char *on, *off, *ss;
usec_t timestamp;
char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
char since2[FORMAT_TIMESTAMP_MAX], *s2;
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("\t Follow: unit currently follows state of %s\n", i->following);
if (streq_ptr(i->load_state, "failed") ||
streq_ptr(i->load_state, "banned")) {
on = ansi_highlight(true);
off = ansi_highlight(false);
} else
on = off = "";
if (i->path)
printf("\t Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, i->path);
else
printf("\t Loaded: %s%s%s\n", on, strna(i->load_state), off);
ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
if (streq_ptr(i->active_state, "failed")) {
on = ansi_highlight(true);
off = ansi_highlight(false);
} else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
on = ansi_highlight_green(true);
off = ansi_highlight_green(false);
} else
on = off = "";
if (ss)
printf("\t Active: %s%s (%s)%s",
on,
strna(i->active_state),
ss,
off);
else
printf("\t Active: %s%s%s",
on,
strna(i->active_state),
off);
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_pretty(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_pretty(since1, sizeof(since1), i->condition_timestamp);
s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
if (s1)
printf("\t start condition failed at %s; %s\n", s2, s1);
else if (s2)
printf("\t start condition failed at %s\n", s2);
}
if (i->sysfs_path)
printf("\t Device: %s\n", i->sysfs_path);
if (i->where)
printf("\t Where: %s\n", i->where);
if (i->what)
printf("\t What: %s\n", i->what);
if (i->accept)
printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
LIST_FOREACH(exec, p, i->exec) {
char *t;
bool good;
/* Only show exited processes here */
if (p->code == 0)
continue;
t = strv_join(p->argv, " ");
printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
free(t);
#ifdef HAVE_SYSV_COMPAT
if (i->is_sysv)
good = is_clean_exit_lsb(p->code, p->status);
else
#endif
good = is_clean_exit(p->code, p->status);
if (!good) {
on = ansi_highlight(true);
off = ansi_highlight(false);
} 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);
#ifdef HAVE_SYSV_COMPAT
if ((c = exit_status_to_string(p->status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
#else
if ((c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD)))
#endif
printf("/%s", c);
} else
printf("signal=%s", signal_to_string(p->status));
printf(")%s\n", off);
on = off = NULL;
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) {
printf("\t");
if (i->main_pid > 0) {
printf("Main PID: %u", (unsigned) i->main_pid);
if (i->running) {
char *t = NULL;
get_process_name(i->main_pid, &t);
if (t) {
printf(" (%s)", t);
free(t);
}
} 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);
#ifdef HAVE_SYSV_COMPAT
if ((c = exit_status_to_string(i->exit_status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
#else
if ((c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD)))
#endif
printf("/%s", c);
} else
printf("signal=%s", signal_to_string(i->exit_status));
printf(")");
}
}
if (i->main_pid > 0 && i->control_pid > 0)
printf(";");
if (i->control_pid > 0) {
char *t = NULL;
printf(" Control: %u", (unsigned) i->control_pid);
get_process_name(i->control_pid, &t);
if (t) {
printf(" (%s)", t);
free(t);
}
}
printf("\n");
}
if (i->status_text)
printf("\t Status: \"%s\"\n", i->status_text);
if (i->default_control_group) {
unsigned c;
printf("\t CGroup: %s\n", i->default_control_group);
if (arg_transport != TRANSPORT_SSH) {
if ((c = columns()) > 18)
c -= 18;
else
c = 0;
show_cgroup_by_path(i->default_control_group, "\t\t ", c);
}
}
if (i->need_daemon_reload)
printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
ansi_highlight(true),
ansi_highlight(false),
arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
}
static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
assert(name);
assert(iter);
assert(i);
switch (dbus_message_iter_get_arg_type(iter)) {
case DBUS_TYPE_STRING: {
const char *s;
dbus_message_iter_get_basic(iter, &s);
if (!isempty(s)) {
if (streq(name, "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->path = s;
#ifdef HAVE_SYSV_COMPAT
else if (streq(name, "SysVPath")) {
i->is_sysv = true;
i->path = s;
}
#endif
else if (streq(name, "DefaultControlGroup"))
i->default_control_group = s;
else if (streq(name, "StatusText"))
i->status_text = 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;
}
break;
}
case DBUS_TYPE_BOOLEAN: {
dbus_bool_t b;
dbus_message_iter_get_basic(iter, &b);
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 DBUS_TYPE_UINT32: {
uint32_t u;
dbus_message_iter_get_basic(iter, &u);
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 DBUS_TYPE_INT32: {
int32_t j;
dbus_message_iter_get_basic(iter, &j);
if (streq(name, "ExecMainCode"))
i->exit_code = (int) j;
else if (streq(name, "ExecMainStatus"))
i->exit_status = (int) j;
break;
}
case DBUS_TYPE_UINT64: {
uint64_t u;
dbus_message_iter_get_basic(iter, &u);
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, "ActiveExitTimestamp"))
i->active_exit_timestamp = (usec_t) u;
else if (streq(name, "ConditionTimestamp"))
i->condition_timestamp = (usec_t) u;
break;
}
case DBUS_TYPE_ARRAY: {
if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
startswith(name, "Exec")) {
DBusMessageIter sub;
dbus_message_iter_recurse(iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
ExecStatusInfo *info;
int r;
if (!(info = new0(ExecStatusInfo, 1)))
return -ENOMEM;
if (!(info->name = strdup(name))) {
free(info);
return -ENOMEM;
}
if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
free(info);
return r;
}
LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
dbus_message_iter_next(&sub);
}
}
break;
}
}
return 0;
}
static int print_property(const char *name, DBusMessageIter *iter) {
assert(name);
assert(iter);
/* This is a low-level property printer, see
* print_status_info() for the nicer output */
if (arg_property && !strv_find(arg_property, name))
return 0;
switch (dbus_message_iter_get_arg_type(iter)) {
case DBUS_TYPE_STRUCT: {
DBusMessageIter sub;
dbus_message_iter_recurse(iter, &sub);
if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
uint32_t u;
dbus_message_iter_get_basic(&sub, &u);
if (u)
printf("%s=%u\n", name, (unsigned) u);
else if (arg_all)
printf("%s=\n", name);
return 0;
} else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
const char *s;
dbus_message_iter_get_basic(&sub, &s);
if (arg_all || s[0])
printf("%s=%s\n", name, s);
return 0;
}
break;
}
case DBUS_TYPE_ARRAY:
if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) {
DBusMessageIter sub, sub2;
dbus_message_iter_recurse(iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
const char *path;
dbus_bool_t ignore;
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0)
printf("EnvironmentFile=%s (ignore=%s)\n", path, yes_no(ignore));
dbus_message_iter_next(&sub);
}
return 0;
} else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
DBusMessageIter sub, sub2;
dbus_message_iter_recurse(iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
const char *type, *path;
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
printf("%s=%s\n", type, path);
dbus_message_iter_next(&sub);
}
return 0;
} else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
DBusMessageIter sub, sub2;
dbus_message_iter_recurse(iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
const char *base;
uint64_t value, next_elapse;
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 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),
format_timespan(timespan2, sizeof(timespan2), next_elapse));
}
dbus_message_iter_next(&sub);
}
return 0;
} else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
DBusMessageIter sub;
dbus_message_iter_recurse(iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
ExecStatusInfo info;
zero(info);
if (exec_status_info_deserialize(&sub, &info) >= 0) {
char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
char *t;
t = strv_join(info.argv, " ");
printf("%s={ path=%s ; argv[]=%s ; ignore=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
name,
strna(info.path),
strna(t),
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(t);
}
free(info.path);
strv_free(info.argv);
dbus_message_iter_next(&sub);
}
return 0;
}
break;
}
if (generic_print_property(name, iter, arg_all) > 0)
return 0;
if (arg_all)
printf("%s=[unprintable]\n", name);
return 0;
}
static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
DBusMessage *m = NULL, *reply = NULL;
const char *interface = "";
int r;
DBusError error;
DBusMessageIter iter, sub, sub2, sub3;
UnitStatusInfo info;
ExecStatusInfo *p;
assert(bus);
assert(path);
assert(new_line);
zero(info);
dbus_error_init(&error);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"GetAll"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
if (*new_line)
printf("\n");
*new_line = true;
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
const char *name;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&sub2, &sub3);
if (show_properties)
r = print_property(name, &sub3);
else
r = status_property(name, &sub3, &info);
if (r < 0) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_next(&sub);
}
r = 0;
if (!show_properties)
print_status_info(&info);
if (!streq_ptr(info.active_state, "active") &&
!streq_ptr(info.active_state, "reloading") &&
streq(verb, "status"))
/* According to LSB: "program not running" */
r = 3;
while ((p = info.exec)) {
LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
exec_status_info_free(p);
}
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int show(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
int r, ret = 0;
DBusError error;
bool show_properties, new_line = false;
char **name;
assert(bus);
assert(args);
dbus_error_init(&error);
show_properties = !streq(args[0], "status");
if (show_properties)
pager_open_if_enabled();
if (show_properties && strv_length(args) <= 1) {
/* If not argument is specified inspect the manager
* itself */
ret = show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
goto finish;
}
STRV_FOREACH(name, args+1) {
const char *path = NULL;
uint32_t id;
if (safe_atou32(*name, &id) < 0) {
/* Interpret as unit name */
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"LoadUnit"))) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, name,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
if (!dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
dbus_error_free(&error);
dbus_message_unref(m);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetUnit"))) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, name,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
if (dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT))
ret = 4; /* According to LSB: "program or service status is unknown" */
else
ret = -EIO;
goto finish;
}
}
} else if (show_properties) {
/* Interpret as job id */
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetJob"))) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
} else {
/* Interpret as PID */
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetUnitByPID"))) {
log_error("Could not allocate message.");
ret = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
ret = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
}
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
ret = -EIO;
goto finish;
}
if ((r = show_one(args[0], bus, path, show_properties, &new_line)) != 0)
ret = r;
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return ret;
}
static int dump(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
const char *text;
dbus_error_init(&error);
pager_open_if_enabled();
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"Dump"))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_STRING, &text,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
fputs(text, stdout);
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int snapshot(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
const char *name = "", *path, *id;
dbus_bool_t cleanup = FALSE;
DBusMessageIter iter, sub;
const char
*interface = "org.freedesktop.systemd1.Unit",
*property = "Id";
dbus_error_init(&error);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"CreateSnapshot"))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
if (strv_length(args) > 1)
name = args[1];
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_BOOLEAN, &cleanup,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"Get"))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_STRING, &property,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
dbus_message_unref(reply);
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_get_basic(&sub, &id);
if (!arg_quiet)
puts(id);
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int delete_snapshot(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
int r;
DBusError error;
char **name;
assert(bus);
assert(args);
dbus_error_init(&error);
STRV_FOREACH(name, args+1) {
const char *path = NULL;
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetUnit"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, name,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Snapshot",
"Remove"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
dbus_message_unref(reply);
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int daemon_reload(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
const char *method;
dbus_error_init(&error);
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";
}
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
method))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
/* There's always a fallback possible for
* legacy actions. */
r = -EADDRNOTAVAIL;
goto finish;
}
if (streq(method, "Reexecute") && dbus_error_has_name(&error, DBUS_ERROR_NO_REPLY)) {
/* On reexecution, we expect a disconnect, not
* a reply */
r = 0;
goto finish;
}
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int reset_failed(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
int r;
DBusError error;
char **name;
assert(bus);
dbus_error_init(&error);
if (strv_length(args) <= 1)
return daemon_reload(bus, args);
STRV_FOREACH(name, args+1) {
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"ResetFailedUnit"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, name,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int show_enviroment(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
DBusMessageIter iter, sub, sub2;
int r;
const char
*interface = "org.freedesktop.systemd1.Manager",
*property = "Environment";
dbus_error_init(&error);
pager_open_if_enabled();
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.DBus.Properties",
"Get"))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_STRING, &property,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&sub, &sub2);
while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
const char *text;
if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_get_basic(&sub2, &text);
printf("%s\n", text);
dbus_message_iter_next(&sub2);
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int set_environment(DBusConnection *bus, char **args) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int r;
const char *method;
DBusMessageIter iter, sub;
char **name;
dbus_error_init(&error);
method = streq(args[0], "set-environment")
? "SetEnvironment"
: "UnsetEnvironment";
if (!(m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
method))) {
log_error("Could not allocate message.");
return -ENOMEM;
}
dbus_message_iter_init_append(m, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
STRV_FOREACH(name, args+1)
if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, name)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_iter_close_container(&iter, &sub)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int enable_sysv_units(char **args) {
int r = 0;
#if defined (HAVE_SYSV_COMPAT) && (defined(TARGET_FEDORA) || defined(TARGET_MANDRIVA) || defined(TARGET_SUSE) || defined(TARGET_MEEGO) || defined(TARGET_ALTLINUX))
const char *verb = args[0];
unsigned f = 1, t = 1;
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 */
zero(paths);
r = lookup_paths_init(&paths, MANAGER_SYSTEM, false);
if (r < 0)
return r;
r = 0;
for (f = 1; args[f]; f++) {
const char *name;
char *p;
bool found_native = false, found_sysv;
unsigned c = 1;
const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
char **k, *l, *q = NULL;
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) {
p = NULL;
if (!isempty(arg_root))
asprintf(&p, "%s/%s/%s", arg_root, *k, name);
else
asprintf(&p, "%s/%s", *k, name);
if (!p) {
log_error("No memory");
r = -ENOMEM;
goto finish;
}
found_native = access(p, F_OK) >= 0;
free(p);
if (found_native)
break;
}
if (found_native)
continue;
p = NULL;
if (!isempty(arg_root))
asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
else
asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
if (!p) {
log_error("No memory");
r = -ENOMEM;
goto finish;
}
p[strlen(p) - sizeof(".service") + 1] = 0;
found_sysv = access(p, F_OK) >= 0;
if (!found_sysv) {
free(p);
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++] = file_name_from_path(p);
argv[c++] =
streq(verb, "enable") ? "on" :
streq(verb, "disable") ? "off" : "--level=5";
argv[c] = NULL;
l = strv_join((char**)argv, " ");
if (!l) {
log_error("No memory.");
free(q);
free(p);
r = -ENOMEM;
goto finish;
}
log_info("Executing %s", l);
free(l);
pid = fork();
if (pid < 0) {
log_error("Failed to fork: %m");
free(p);
free(q);
r = -errno;
goto finish;
} else if (pid == 0) {
/* Child */
execv(argv[0], (char**) argv);
_exit(EXIT_FAILURE);
}
free(p);
free(q);
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:
lookup_paths_free(&paths);
/* Drop all SysV units */
for (f = 1, t = 1; args[f]; f++) {
if (isempty(args[f]))
continue;
args[t++] = args[f];
}
args[t] = NULL;
#endif
return r;
}
static int enable_unit(DBusConnection *bus, char **args) {
const char *verb = args[0];
UnitFileChange *changes = NULL;
unsigned n_changes = 0, i;
int carries_install_info = -1;
DBusMessage *m = NULL, *reply = NULL;
int r;
DBusError error;
dbus_error_init(&error);
r = enable_sysv_units(args);
if (r < 0)
return r;
if (!bus || avoid_bus()) {
if (streq(verb, "enable")) {
r = unit_file_enable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(verb, "disable"))
r = unit_file_disable(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
else if (streq(verb, "reenable")) {
r = unit_file_reenable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(verb, "link"))
r = unit_file_link(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
else if (streq(verb, "preset")) {
r = unit_file_preset(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
carries_install_info = r;
} else if (streq(verb, "mask"))
r = unit_file_mask(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
else if (streq(verb, "unmask"))
r = unit_file_unmask(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
else
assert_not_reached("Unknown verb");
if (r < 0) {
log_error("Operation failed: %s", strerror(-r));
goto finish;
}
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);
}
} else {
const char *method;
bool send_force = true, expect_carries_install_info = false;
dbus_bool_t a, b;
DBusMessageIter iter, sub, sub2;
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");
m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
method);
if (!m) {
log_error("Out of memory");
r = -ENOMEM;
goto finish;
}
dbus_message_iter_init_append(m, &iter);
r = bus_append_strv_iter(&iter, args+1);
if (r < 0) {
log_error("Failed to append unit files.");
goto finish;
}
a = arg_runtime;
if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &a)) {
log_error("Failed to append runtime boolean.");
r = -ENOMEM;
goto finish;
}
if (send_force) {
b = arg_force;
if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b)) {
log_error("Failed to append force boolean.");
r = -ENOMEM;
goto finish;
}
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_iter_init(reply, &iter)) {
log_error("Failed to initialize iterator.");
goto finish;
}
if (expect_carries_install_info) {
r = bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &b, true);
if (r < 0) {
log_error("Failed to parse reply.");
goto finish;
}
carries_install_info = b;
}
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&iter, &sub);
while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
const char *type, *path, *source;
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
dbus_message_iter_recurse(&sub, &sub2);
if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0 ||
bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &source, false) < 0) {
log_error("Failed to parse reply.");
r = -EIO;
goto finish;
}
if (streq(type, "symlink"))
log_info("ln -s '%s' '%s'", source, path);
else
log_info("rm '%s'", path);
dbus_message_iter_next(&sub);
}
/* Try to reload if enabeld */
if (!arg_no_reload)
r = daemon_reload(bus, args);
}
if (carries_install_info == 0)
log_warning("Warning: unit files do not carry install information. No operation executed.");
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
unit_file_changes_free(changes, n_changes);
dbus_error_free(&error);
return r;
}
static int unit_is_enabled(DBusConnection *bus, char **args) {
DBusError error;
int r;
DBusMessage *m = NULL, *reply = NULL;
bool enabled;
char **name;
dbus_error_init(&error);
r = enable_sysv_units(args);
if (r < 0)
return r;
enabled = r > 0;
if (!bus || avoid_bus()) {
STRV_FOREACH(name, args+1) {
UnitFileState state;
state = unit_file_get_state(arg_scope, arg_root, *name);
if (state < 0) {
r = state;
goto finish;
}
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, args+1) {
const char *s;
m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetUnitFileState");
if (!m) {
log_error("Out of memory");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, name,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_STRING, &s,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
dbus_message_unref(reply);
m = reply = NULL;
if (streq(s, "enabled") ||
streq(s, "enabled-runtime") ||
streq(s, "static"))
enabled = true;
if (!arg_quiet)
puts(s);
}
}
r = enabled ? 0 : 1;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
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"
" -t --type=TYPE List only units of a particular type\n"
" -p --property=NAME Show only properties by this name\n"
" -a --all Show all units/properties, including dead/empty ones\n"
" --failed Show only failed units\n"
" --full Don't ellipsize unit names on output\n"
" --fail When queueing a new job, fail if conflicting jobs are\n"
" pending\n"
" --ignore-dependencies\n"
" When queueing a new job, ignore all its dependencies\n"
" --kill-who=WHO Who to send signal to\n"
" -s --signal=SIGNAL Which signal to send\n"
" -H --host=[USER@]HOST\n"
" Show information for remote host\n"
" -P --privileged Acquire privileges before execution\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-pager Do not pipe output into a pager\n"
" --no-ask-password\n"
" Do not ask for system passwords\n"
" --order When generating graph for dot, show only order\n"
" --require When generating graph for dot, show only requirement\n"
" --system Connect to system manager\n"
" --user Connect to user service manager\n"
" --global Enable/disable unit files globally\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"
" --runtime Enable unit files only temporarily until next reboot\n\n"
"Unit Commands:\n"
" list-units List loaded units\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 is possible,\n"
" otherwise start or restart\n"
" reload-or-try-restart [NAME...] Reload one or more units is 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"
" 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"
" reset-failed [NAME...] Reset failed state for all, one, or more\n"
" units\n"
" load [NAME...] Load one or more units\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"
" 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"
" is-enabled [NAME...] Check whether unit files are enabled\n\n"
"Job Commands:\n"
" list-jobs List jobs\n"
" cancel [JOB...] Cancel all, one, or more jobs\n\n"
"Status Commands:\n"
" dump Dump server status\n"
" dot Dump dependency graph for dot(1)\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 Shut down and reboot the system\n"
" kexec Shut down and reboot the system with kexec\n"
" exit Ask for user instance termination\n",
program_invocation_short_name);
return 0;
}
static int halt_help(void) {
printf("%s [OPTIONS...]\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"
" -n --no-sync Don't sync before halt/power-off/reboot\n"
" --no-wall Don't send wall message before halt/power-off/reboot\n",
program_invocation_short_name,
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, overriden 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 systemctl_parse_argv(int argc, char *argv[]) {
enum {
ARG_FAIL = 0x100,
ARG_IGNORE_DEPENDENCIES,
ARG_VERSION,
ARG_USER,
ARG_SYSTEM,
ARG_GLOBAL,
ARG_NO_BLOCK,
ARG_NO_PAGER,
ARG_NO_WALL,
ARG_ORDER,
ARG_REQUIRE,
ARG_ROOT,
ARG_FULL,
ARG_NO_RELOAD,
ARG_KILL_MODE,
ARG_KILL_WHO,
ARG_NO_ASK_PASSWORD,
ARG_FAILED,
ARG_RUNTIME
};
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' },
{ "failed", no_argument, NULL, ARG_FAILED },
{ "full", no_argument, NULL, ARG_FULL },
{ "fail", no_argument, NULL, ARG_FAIL },
{ "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES },
{ "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-pager", no_argument, NULL, ARG_NO_PAGER },
{ "no-wall", no_argument, NULL, ARG_NO_WALL },
{ "quiet", no_argument, NULL, 'q' },
{ "order", no_argument, NULL, ARG_ORDER },
{ "require", no_argument, NULL, ARG_REQUIRE },
{ "root", required_argument, NULL, ARG_ROOT },
{ "force", no_argument, NULL, 'f' },
{ "no-reload", no_argument, NULL, ARG_NO_RELOAD },
{ "kill-mode", required_argument, NULL, ARG_KILL_MODE }, /* undocumented on purpose */
{ "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' },
{ "privileged",no_argument, NULL, 'P' },
{ "runtime", no_argument, NULL, ARG_RUNTIME },
{ NULL, 0, NULL, 0 }
};
int c;
assert(argc >= 0);
assert(argv);
/* Only when running as systemctl we ask for passwords */
arg_ask_password = true;
while ((c = getopt_long(argc, argv, "ht:p:aqfs:H:P", options, NULL)) >= 0) {
switch (c) {
case 'h':
systemctl_help();
return 0;
case ARG_VERSION:
puts(PACKAGE_STRING);
puts(DISTRIBUTION);
puts(SYSTEMD_FEATURES);
return 0;
case 't':
arg_type = optarg;
break;
case 'p': {
char **l;
if (!(l = strv_append(arg_property, optarg)))
return -ENOMEM;
strv_free(arg_property);
arg_property = l;
/* 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_FAIL:
arg_job_mode = "fail";
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_PAGER:
arg_no_pager = true;
break;
case ARG_NO_WALL:
arg_no_wall = true;
break;
case ARG_ORDER:
arg_dot = DOT_ORDER;
break;
case ARG_REQUIRE:
arg_dot = DOT_REQUIRE;
break;
case ARG_ROOT:
arg_root = optarg;
break;
case ARG_FULL:
arg_full = true;
break;
case ARG_FAILED:
arg_failed = true;
break;
case 'q':
arg_quiet = true;
break;
case 'f':
arg_force = true;
break;
case ARG_NO_RELOAD:
arg_no_reload = true;
break;
case ARG_KILL_WHO:
arg_kill_who = optarg;
break;
case ARG_KILL_MODE:
arg_kill_mode = 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 'P':
arg_transport = TRANSPORT_POLKIT;
break;
case 'H':
arg_transport = TRANSPORT_SSH;
arg_host = optarg;
break;
case ARG_RUNTIME:
arg_runtime = true;
break;
case '?':
return -EINVAL;
default:
log_error("Unknown option code %c", c);
return -EINVAL;
}
}
if (arg_transport != TRANSPORT_NORMAL && 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-sync", no_argument, NULL, 'n' },
{ "no-wall", no_argument, NULL, ARG_NO_WALL },
{ NULL, 0, NULL, 0 }
};
int c, runlevel;
assert(argc >= 0);
assert(argv);
if (utmp_get_runlevel(&runlevel, NULL) >= 0)
if (runlevel == '0' || runlevel == '6')
arg_immediate = true;
while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
switch (c) {
case ARG_HELP:
halt_help();
return 0;
case ARG_HALT:
arg_action = ACTION_HALT;
break;
case 'p':
if (arg_action != ACTION_REBOOT)
arg_action = ACTION_POWEROFF;
break;
case ARG_REBOOT:
arg_action = ACTION_REBOOT;
break;
case 'f':
arg_immediate = true;
break;
case 'w':
arg_dry = true;
break;
case 'd':
arg_no_wtmp = true;
break;
case 'n':
arg_no_sync = true;
break;
case ARG_NO_WALL:
arg_no_wall = true;
break;
case 'i':
case 'h':
/* Compatibility nops */
break;
case '?':
return -EINVAL;
default:
log_error("Unknown option code %c", c);
return -EINVAL;
}
}
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);
zero(tm);
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 bool kexec_loaded(void) {
bool loaded = false;
char *s;
if (read_one_line_file("/sys/kernel/kexec_loaded", &s) >= 0) {
if (s[0] == '1')
loaded = true;
free(s);
}
return loaded;
}
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' },
{ "no-wall", no_argument, NULL, ARG_NO_WALL },
{ NULL, 0, NULL, 0 }
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
switch (c) {
case ARG_HELP:
shutdown_help();
return 0;
case 'H':
arg_action = ACTION_HALT;
break;
case 'P':
arg_action = ACTION_POWEROFF;
break;
case 'r':
if (kexec_loaded())
arg_action = ACTION_KEXEC;
else
arg_action = ACTION_REBOOT;
break;
case '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:
log_error("Unknown option code %c", c);
return -EINVAL;
}
}
if (argc > optind) {
if ((r = parse_time_spec(argv[optind], &arg_when)) < 0) {
log_error("Failed to parse time specification: %s", argv[optind]);
return r;
}
} else
arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
/* We skip the time argument */
if (argc > optind + 1)
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 },
{ NULL, 0, NULL, 0 }
};
static const struct {
char from;
enum action to;
} table[] = {
{ '0', ACTION_POWEROFF },
{ '6', ACTION_REBOOT },
{ '1', ACTION_RESCUE },
{ '2', ACTION_RUNLEVEL2 },
{ '3', ACTION_RUNLEVEL3 },
{ '4', ACTION_RUNLEVEL4 },
{ '5', ACTION_RUNLEVEL5 },
{ 's', ACTION_RESCUE },
{ 'S', ACTION_RESCUE },
{ 'q', ACTION_RELOAD },
{ 'Q', ACTION_RELOAD },
{ 'u', ACTION_REEXEC },
{ 'U', ACTION_REEXEC }
};
unsigned i;
int c;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
switch (c) {
case ARG_HELP:
telinit_help();
return 0;
case ARG_NO_WALL:
arg_no_wall = true;
break;
case '?':
return -EINVAL;
default:
log_error("Unknown option code %c", c);
return -EINVAL;
}
}
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 },
{ NULL, 0, NULL, 0 }
};
int c;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
switch (c) {
case ARG_HELP:
runlevel_help();
return 0;
case '?':
return -EINVAL;
default:
log_error("Unknown option code %c", c);
return -EINVAL;
}
}
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("/lib/upstart/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);
}
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_upstart(void) {
DBusMessage *m = NULL, *reply = NULL;
DBusError error;
int previous, rl, r;
char
env1_buf[] = "RUNLEVEL=X",
env2_buf[] = "PREVLEVEL=X";
char *env1 = env1_buf, *env2 = env2_buf;
const char *emit = "runlevel";
dbus_bool_t b_false = FALSE;
DBusMessageIter iter, sub;
DBusConnection *bus;
dbus_error_init(&error);
if (!(rl = action_to_runlevel()))
return 0;
if (utmp_get_runlevel(&previous, NULL) < 0)
previous = 'N';
if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
r = 0;
goto finish;
}
log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if ((r = bus_check_peercred(bus)) < 0) {
log_error("Failed to verify owner of bus.");
goto finish;
}
if (!(m = dbus_message_new_method_call(
"com.ubuntu.Upstart",
"/com/ubuntu/Upstart",
"com.ubuntu.Upstart0_6",
"EmitEvent"))) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
dbus_message_iter_init_append(m, &iter);
env1_buf[sizeof(env1_buf)-2] = rl;
env2_buf[sizeof(env2_buf)-2] = previous;
if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
!dbus_message_iter_close_container(&iter, &sub) ||
!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
if (error_is_no_service(&error)) {
r = -EADDRNOTAVAIL;
goto finish;
}
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
r = 1;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
if (bus) {
dbus_connection_flush(bus);
dbus_connection_close(bus);
dbus_connection_unref(bus);
}
dbus_error_free(&error);
return r;
}
static int talk_initctl(void) {
struct init_request request;
int r, fd;
char rl;
if (!(rl = action_to_runlevel()))
return 0;
zero(request);
request.magic = INIT_MAGIC;
request.sleeptime = 0;
request.cmd = INIT_CMD_RUNLVL;
request.runlevel = rl;
if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 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);
close_nointr_nofail(fd);
if (r < 0) {
log_error("Failed to write to "INIT_FIFO": %m");
return errno ? -errno : -EIO;
}
return 1;
}
static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
static const struct {
const char* verb;
const enum {
MORE,
LESS,
EQUAL
} argc_cmp;
const int argc;
int (* const dispatch)(DBusConnection *bus, char **args);
} verbs[] = {
{ "list-units", LESS, 1, list_units },
{ "list-unit-files", EQUAL, 1, list_unit_files },
{ "list-jobs", EQUAL, 1, list_jobs },
{ "clear-jobs", EQUAL, 1, daemon_reload },
{ "load", MORE, 2, load_unit },
{ "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 },
{ "check", MORE, 2, check_unit },
{ "show", MORE, 1, show },
{ "status", MORE, 2, show },
{ "dump", EQUAL, 1, dump },
{ "dot", EQUAL, 1, dot },
{ "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_enviroment },
{ "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 },
{ "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 }
};
int left;
unsigned i;
assert(argc >= 0);
assert(argv);
assert(error);
left = argc - optind;
if (left <= 0)
/* Special rule: no arguments means "list-units" */
i = 0;
else {
if (streq(argv[optind], "help")) {
systemctl_help();
return 0;
}
for (i = 0; i < ELEMENTSOF(verbs); i++)
if (streq(argv[optind], verbs[i].verb))
break;
if (i >= ELEMENTSOF(verbs)) {
log_error("Unknown operation %s", argv[optind]);
return -EINVAL;
}
}
switch (verbs[i].argc_cmp) {
case EQUAL:
if (left != verbs[i].argc) {
log_error("Invalid number of arguments.");
return -EINVAL;
}
break;
case MORE:
if (left < verbs[i].argc) {
log_error("Too few arguments.");
return -EINVAL;
}
break;
case LESS:
if (left > verbs[i].argc) {
log_error("Too many arguments.");
return -EINVAL;
}
break;
default:
assert_not_reached("Unknown comparison operator.");
}
/* 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-enable") &&
!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")) {
if (running_in_chroot() > 0) {
log_info("Running in chroot, ignoring request.");
return 0;
}
if (!bus && !avoid_bus()) {
log_error("Failed to get D-Bus connection: %s", error->message);
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) {
int fd = -1;
struct msghdr msghdr;
struct iovec iovec;
union sockaddr_union sockaddr;
struct shutdownd_command c;
zero(c);
c.elapse = t;
c.mode = mode;
c.dry_run = dry_run;
c.warn_wall = warn;
if (message)
strncpy(c.wall_message, message, sizeof(c.wall_message));
if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0)
return -errno;
zero(sockaddr);
sockaddr.sa.sa_family = AF_UNIX;
sockaddr.un.sun_path[0] = 0;
strncpy(sockaddr.un.sun_path, "/run/systemd/shutdownd", sizeof(sockaddr.un.sun_path));
zero(iovec);
iovec.iov_base = (char*) &c;
iovec.iov_len = sizeof(c);
zero(msghdr);
msghdr.msg_name = &sockaddr;
msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + sizeof("/run/systemd/shutdownd") - 1;
msghdr.msg_iov = &iovec;
msghdr.msg_iovlen = 1;
if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
close_nointr_nofail(fd);
return -errno;
}
close_nointr_nofail(fd);
return 0;
}
static int reload_with_fallback(DBusConnection *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(DBusConnection *bus) {
if (bus) {
/* First, try systemd via D-Bus. */
if (start_unit(bus, NULL) >= 0)
goto done;
}
/* Hmm, talking to systemd via D-Bus didn't work. Then
* let's try to talk to Upstart via D-Bus. */
if (talk_upstart() > 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_main(DBusConnection *bus) {
int r;
if (geteuid() != 0) {
log_error("Must be root.");
return -EPERM;
}
if (arg_when > 0) {
char *m;
char date[FORMAT_TIMESTAMP_MAX];
m = strv_join(arg_wall, " ");
r = send_shutdownd(arg_when,
arg_action == ACTION_HALT ? 'H' :
arg_action == ACTION_POWEROFF ? 'P' :
'r',
arg_dry,
!arg_no_wall,
m);
free(m);
if (r < 0)
log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
else {
log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
format_timestamp(date, sizeof(date), arg_when));
return 0;
}
}
if (!arg_dry && !arg_immediate)
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 if ((r = utmp_put_shutdown(0)) < 0)
log_warning("Failed to write utmp record: %s", strerror(-r));
}
if (!arg_no_sync)
sync();
if (arg_dry)
return 0;
/* Make sure C-A-D is handled by the kernel from this
* point on... */
reboot(RB_ENABLE_CAD);
switch (arg_action) {
case ACTION_HALT:
log_info("Halting.");
reboot(RB_HALT_SYSTEM);
break;
case ACTION_POWEROFF:
log_info("Powering off.");
reboot(RB_POWER_OFF);
break;
case ACTION_REBOOT:
log_info("Rebooting.");
reboot(RB_AUTOBOOT);
break;
default:
assert_not_reached("Unknown halt action.");
}
/* We should never reach this. */
return -ENOSYS;
}
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[]) {
int r, retval = EXIT_FAILURE;
DBusConnection *bus = NULL;
DBusError error;
dbus_error_init(&error);
log_parse_environment();
log_open();
if ((r = parse_argv(argc, argv)) < 0)
goto finish;
else if (r == 0) {
retval = EXIT_SUCCESS;
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();
retval = r < 0 ? EXIT_FAILURE : r;
goto finish;
}
if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
log_info("Running in chroot, ignoring request.");
retval = 0;
goto finish;
}
if (!avoid_bus()) {
if (arg_transport == TRANSPORT_NORMAL)
bus_connect(arg_scope == UNIT_FILE_SYSTEM ? DBUS_BUS_SYSTEM : DBUS_BUS_SESSION, &bus, &private_bus, &error);
else if (arg_transport == TRANSPORT_POLKIT) {
bus_connect_system_polkit(&bus, &error);
private_bus = false;
} else if (arg_transport == TRANSPORT_SSH) {
bus_connect_system_ssh(NULL, arg_host, &bus, &error);
private_bus = false;
} else
assert_not_reached("Uh, invalid transport...");
}
switch (arg_action) {
case ACTION_SYSTEMCTL:
r = systemctl_main(bus, argc, argv, &error);
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:
r = send_shutdownd(0, 0, false, false, NULL);
break;
case ACTION_INVALID:
case ACTION_RUNLEVEL:
default:
assert_not_reached("Unknown action");
}
retval = r < 0 ? EXIT_FAILURE : r;
finish:
if (bus) {
dbus_connection_flush(bus);
dbus_connection_close(bus);
dbus_connection_unref(bus);
}
dbus_error_free(&error);
dbus_shutdown();
strv_free(arg_property);
pager_close();
agent_close();
return retval;
}