/*-*- 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 Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
***/
#include
#include
#include
#include
#include
#include "sd-bus.h"
#include "sd-login.h"
#include "bus-util.h"
#include "bus-error.h"
#include "log.h"
#include "util.h"
#include "macro.h"
#include "pager.h"
#include "build.h"
#include "strv.h"
#include "unit-name.h"
#include "sysfs-show.h"
// #include "logs-show.h"
#include "cgroup-show.h"
#include "cgroup-util.h"
#include "spawn-polkit-agent.h"
#include "verbs.h"
#include "process-util.h"
#include "terminal-util.h"
#include "signal-util.h"
static char **arg_property = NULL;
static bool arg_all = false;
static bool arg_full = false;
static bool arg_no_pager = false;
static bool arg_legend = true;
static const char *arg_kill_who = NULL;
static int arg_signal = SIGTERM;
static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
static char *arg_host = NULL;
static bool arg_ask_password = true;
#if 0
static unsigned arg_lines = 10;
static OutputMode arg_output = OUTPUT_SHORT;
#endif // 0
static void pager_open_if_enabled(void) {
if (arg_no_pager)
return;
pager_open(false);
}
static void polkit_agent_open_if_enabled(void) {
/* Open the polkit agent as a child process if necessary */
if (!arg_ask_password)
return;
if (arg_transport != BUS_TRANSPORT_LOCAL)
return;
polkit_agent_open();
}
static OutputFlags get_output_flags(void) {
return
arg_all * OUTPUT_SHOW_ALL |
arg_full * OUTPUT_FULL_WIDTH |
(!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
on_tty() * OUTPUT_COLOR;
}
static int list_sessions(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
const char *id, *user, *seat, *object;
sd_bus *bus = userdata;
unsigned k = 0;
uint32_t uid;
int r;
assert(bus);
assert(argv);
pager_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"ListSessions",
&error, &reply,
"");
if (r < 0) {
log_error("Failed to list sessions: %s", bus_error_message(&error, r));
return r;
}
r = sd_bus_message_enter_container(reply, 'a', "(susso)");
if (r < 0)
return bus_log_parse_error(r);
if (arg_legend)
printf("%10s %10s %-16s %-16s\n", "SESSION", "UID", "USER", "SEAT");
while ((r = sd_bus_message_read(reply, "(susso)", &id, &uid, &user, &seat, &object)) > 0) {
printf("%10s %10u %-16s %-16s\n", id, (unsigned) uid, user, seat);
k++;
}
if (r < 0)
return bus_log_parse_error(r);
if (arg_legend)
printf("\n%u sessions listed.\n", k);
return 0;
}
static int list_users(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
const char *user, *object;
sd_bus *bus = userdata;
unsigned k = 0;
uint32_t uid;
int r;
assert(bus);
assert(argv);
pager_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"ListUsers",
&error, &reply,
"");
if (r < 0) {
log_error("Failed to list users: %s", bus_error_message(&error, r));
return r;
}
r = sd_bus_message_enter_container(reply, 'a', "(uso)");
if (r < 0)
return bus_log_parse_error(r);
if (arg_legend)
printf("%10s %-16s\n", "UID", "USER");
while ((r = sd_bus_message_read(reply, "(uso)", &uid, &user, &object)) > 0) {
printf("%10u %-16s\n", (unsigned) uid, user);
k++;
}
if (r < 0)
return bus_log_parse_error(r);
if (arg_legend)
printf("\n%u users listed.\n", k);
return 0;
}
static int list_seats(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
const char *seat, *object;
sd_bus *bus = userdata;
unsigned k = 0;
int r;
assert(bus);
assert(argv);
pager_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"ListSeats",
&error, &reply,
"");
if (r < 0) {
log_error("Failed to list seats: %s", bus_error_message(&error, r));
return r;
}
r = sd_bus_message_enter_container(reply, 'a', "(so)");
if (r < 0)
return bus_log_parse_error(r);
if (arg_legend)
printf("%-16s\n", "SEAT");
while ((r = sd_bus_message_read(reply, "(so)", &seat, &object)) > 0) {
printf("%-16s\n", seat);
k++;
}
if (r < 0)
return bus_log_parse_error(r);
if (arg_legend)
printf("\n%u seats listed.\n", k);
return 0;
}
static int show_unit_cgroup(sd_bus *bus, const char *interface, const char *unit, pid_t leader) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ char *path = NULL;
const char *cgroup;
int r;
unsigned c;
assert(bus);
assert(unit);
if (arg_transport != BUS_TRANSPORT_LOCAL)
return 0;
path = unit_dbus_path_from_name(unit);
if (!path)
return -ENOMEM;
r = sd_bus_get_property(
bus,
"org.freedesktop.systemd1",
path,
interface,
"ControlGroup",
&error, &reply, "s");
if (r < 0)
return r;
r = sd_bus_message_read(reply, "s", &cgroup);
if (r < 0)
return r;
if (isempty(cgroup))
return 0;
if (cg_is_empty_recursive(ELOGIND_CGROUP_CONTROLLER, cgroup, false) != 0 && leader <= 0)
return 0;
c = columns();
if (c > 18)
c -= 18;
else
c = 0;
show_cgroup_and_extra(ELOGIND_CGROUP_CONTROLLER, cgroup, "\t\t ", c, false, &leader, leader > 0, get_output_flags());
return 0;
}
typedef struct SessionStatusInfo {
char *id;
uid_t uid;
char *name;
struct dual_timestamp timestamp;
unsigned int vtnr;
char *seat;
char *tty;
char *display;
bool remote;
char *remote_host;
char *remote_user;
char *service;
pid_t leader;
char *type;
char *class;
char *state;
char *scope;
char *desktop;
} SessionStatusInfo;
typedef struct UserStatusInfo {
uid_t uid;
char *name;
struct dual_timestamp timestamp;
char *state;
char **sessions;
char *display;
char *slice;
} UserStatusInfo;
typedef struct SeatStatusInfo {
char *id;
char *active_session;
char **sessions;
} SeatStatusInfo;
static void session_status_info_clear(SessionStatusInfo *info) {
if (info) {
free(info->id);
free(info->name);
free(info->seat);
free(info->tty);
free(info->display);
free(info->remote_host);
free(info->remote_user);
free(info->service);
free(info->type);
free(info->class);
free(info->state);
free(info->scope);
free(info->desktop);
zero(*info);
}
}
static void user_status_info_clear(UserStatusInfo *info) {
if (info) {
free(info->name);
free(info->state);
strv_free(info->sessions);
free(info->display);
free(info->slice);
zero(*info);
}
}
static void seat_status_info_clear(SeatStatusInfo *info) {
if (info) {
free(info->id);
free(info->active_session);
strv_free(info->sessions);
zero(*info);
}
}
static int prop_map_first_of_struct(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
const char *contents;
int r;
r = sd_bus_message_peek_type(m, NULL, &contents);
if (r < 0)
return r;
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, contents);
if (r < 0)
return r;
if (contents[0] == 's' || contents[0] == 'o') {
const char *s;
char **p = (char **) userdata;
r = sd_bus_message_read_basic(m, contents[0], &s);
if (r < 0)
return r;
r = free_and_strdup(p, s);
if (r < 0)
return r;
} else {
r = sd_bus_message_read_basic(m, contents[0], userdata);
if (r < 0)
return r;
}
r = sd_bus_message_skip(m, contents+1);
if (r < 0)
return r;
r = sd_bus_message_exit_container(m);
if (r < 0)
return r;
return 0;
}
static int prop_map_sessions_strv(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
const char *name;
int r;
assert(bus);
assert(m);
r = sd_bus_message_enter_container(m, 'a', "(so)");
if (r < 0)
return r;
while ((r = sd_bus_message_read(m, "(so)", &name, NULL)) > 0) {
r = strv_extend(userdata, name);
if (r < 0)
return r;
}
if (r < 0)
return r;
return sd_bus_message_exit_container(m);
}
static int print_session_status_info(sd_bus *bus, const char *path, bool *new_line) {
static const struct bus_properties_map map[] = {
{ "Id", "s", NULL, offsetof(SessionStatusInfo, id) },
{ "Name", "s", NULL, offsetof(SessionStatusInfo, name) },
{ "TTY", "s", NULL, offsetof(SessionStatusInfo, tty) },
{ "Display", "s", NULL, offsetof(SessionStatusInfo, display) },
{ "RemoteHost", "s", NULL, offsetof(SessionStatusInfo, remote_host) },
{ "RemoteUser", "s", NULL, offsetof(SessionStatusInfo, remote_user) },
{ "Service", "s", NULL, offsetof(SessionStatusInfo, service) },
{ "Desktop", "s", NULL, offsetof(SessionStatusInfo, desktop) },
{ "Type", "s", NULL, offsetof(SessionStatusInfo, type) },
{ "Class", "s", NULL, offsetof(SessionStatusInfo, class) },
{ "Scope", "s", NULL, offsetof(SessionStatusInfo, scope) },
{ "State", "s", NULL, offsetof(SessionStatusInfo, state) },
{ "VTNr", "u", NULL, offsetof(SessionStatusInfo, vtnr) },
{ "Leader", "u", NULL, offsetof(SessionStatusInfo, leader) },
{ "Remote", "b", NULL, offsetof(SessionStatusInfo, remote) },
{ "Timestamp", "t", NULL, offsetof(SessionStatusInfo, timestamp.realtime) },
{ "TimestampMonotonic", "t", NULL, offsetof(SessionStatusInfo, timestamp.monotonic) },
{ "User", "(uo)", prop_map_first_of_struct, offsetof(SessionStatusInfo, uid) },
{ "Seat", "(so)", prop_map_first_of_struct, offsetof(SessionStatusInfo, seat) },
{}
};
char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
char since2[FORMAT_TIMESTAMP_MAX], *s2;
_cleanup_(session_status_info_clear) SessionStatusInfo i = {};
int r;
r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
if (r < 0)
return log_error_errno(r, "Could not get properties: %m");
if (*new_line)
printf("\n");
*new_line = true;
printf("%s - ", strna(i.id));
if (i.name)
printf("%s (%u)\n", i.name, (unsigned) i.uid);
else
printf("%u\n", (unsigned) i.uid);
s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
if (s1)
printf("\t Since: %s; %s\n", s2, s1);
else if (s2)
printf("\t Since: %s\n", s2);
if (i.leader > 0) {
_cleanup_free_ char *t = NULL;
printf("\t Leader: %u", (unsigned) i.leader);
get_process_comm(i.leader, &t);
if (t)
printf(" (%s)", t);
printf("\n");
}
if (!isempty(i.seat)) {
printf("\t Seat: %s", i.seat);
if (i.vtnr > 0)
printf("; vc%u", i.vtnr);
printf("\n");
}
if (i.tty)
printf("\t TTY: %s\n", i.tty);
else if (i.display)
printf("\t Display: %s\n", i.display);
if (i.remote_host && i.remote_user)
printf("\t Remote: %s@%s\n", i.remote_user, i.remote_host);
else if (i.remote_host)
printf("\t Remote: %s\n", i.remote_host);
else if (i.remote_user)
printf("\t Remote: user %s\n", i.remote_user);
else if (i.remote)
printf("\t Remote: Yes\n");
if (i.service) {
printf("\t Service: %s", i.service);
if (i.type)
printf("; type %s", i.type);
if (i.class)
printf("; class %s", i.class);
printf("\n");
} else if (i.type) {
printf("\t Type: %s", i.type);
if (i.class)
printf("; class %s", i.class);
printf("\n");
} else if (i.class)
printf("\t Class: %s\n", i.class);
if (!isempty(i.desktop))
printf("\t Desktop: %s\n", i.desktop);
if (i.state)
printf("\t State: %s\n", i.state);
if (i.scope) {
printf("\t Unit: %s\n", i.scope);
show_unit_cgroup(bus, "org.freedesktop.systemd1.Scope", i.scope, i.leader);
#if 0
if (arg_transport == BUS_TRANSPORT_LOCAL) {
show_journal_by_unit(
stdout,
i.scope,
arg_output,
0,
i.timestamp.monotonic,
arg_lines,
0,
get_output_flags() | OUTPUT_BEGIN_NEWLINE,
SD_JOURNAL_LOCAL_ONLY,
true,
NULL);
}
#endif // 0
}
return 0;
}
static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line) {
static const struct bus_properties_map map[] = {
{ "Name", "s", NULL, offsetof(UserStatusInfo, name) },
{ "Slice", "s", NULL, offsetof(UserStatusInfo, slice) },
{ "State", "s", NULL, offsetof(UserStatusInfo, state) },
{ "UID", "u", NULL, offsetof(UserStatusInfo, uid) },
{ "Timestamp", "t", NULL, offsetof(UserStatusInfo, timestamp.realtime) },
{ "TimestampMonotonic", "t", NULL, offsetof(UserStatusInfo, timestamp.monotonic) },
{ "Display", "(so)", prop_map_first_of_struct, offsetof(UserStatusInfo, display) },
{ "Sessions", "a(so)", prop_map_sessions_strv, offsetof(UserStatusInfo, sessions) },
{}
};
char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
char since2[FORMAT_TIMESTAMP_MAX], *s2;
_cleanup_(user_status_info_clear) UserStatusInfo i = {};
int r;
r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
if (r < 0)
return log_error_errno(r, "Could not get properties: %m");
if (*new_line)
printf("\n");
*new_line = true;
if (i.name)
printf("%s (%u)\n", i.name, (unsigned) i.uid);
else
printf("%u\n", (unsigned) i.uid);
s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
if (s1)
printf("\t Since: %s; %s\n", s2, s1);
else if (s2)
printf("\t Since: %s\n", s2);
if (!isempty(i.state))
printf("\t State: %s\n", i.state);
if (!strv_isempty(i.sessions)) {
char **l;
printf("\tSessions:");
STRV_FOREACH(l, i.sessions) {
if (streq_ptr(*l, i.display))
printf(" *%s", *l);
else
printf(" %s", *l);
}
printf("\n");
}
if (i.slice) {
printf("\t Unit: %s\n", i.slice);
show_unit_cgroup(bus, "org.freedesktop.systemd1.Slice", i.slice, 0);
#if 0
show_journal_by_unit(
stdout,
i.slice,
arg_output,
0,
i.timestamp.monotonic,
arg_lines,
0,
get_output_flags() | OUTPUT_BEGIN_NEWLINE,
SD_JOURNAL_LOCAL_ONLY,
true,
NULL);
#endif // 0
}
return 0;
}
static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line) {
static const struct bus_properties_map map[] = {
{ "Id", "s", NULL, offsetof(SeatStatusInfo, id) },
{ "ActiveSession", "(so)", prop_map_first_of_struct, offsetof(SeatStatusInfo, active_session) },
{ "Sessions", "a(so)", prop_map_sessions_strv, offsetof(SeatStatusInfo, sessions) },
{}
};
_cleanup_(seat_status_info_clear) SeatStatusInfo i = {};
int r;
r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
if (r < 0)
return log_error_errno(r, "Could not get properties: %m");
if (*new_line)
printf("\n");
*new_line = true;
printf("%s\n", strna(i.id));
if (!strv_isempty(i.sessions)) {
char **l;
printf("\tSessions:");
STRV_FOREACH(l, i.sessions) {
if (streq_ptr(*l, i.active_session))
printf(" *%s", *l);
else
printf(" %s", *l);
}
printf("\n");
}
if (arg_transport == BUS_TRANSPORT_LOCAL) {
unsigned c;
c = columns();
if (c > 21)
c -= 21;
else
c = 0;
printf("\t Devices:\n");
show_sysfs(i.id, "\t\t ", c);
}
return 0;
}
static int show_properties(sd_bus *bus, const char *path, bool *new_line) {
int r;
if (*new_line)
printf("\n");
*new_line = true;
r = bus_print_all_properties(bus, "org.freedesktop.login1", path, arg_property, arg_all);
if (r < 0)
log_error_errno(r, "Could not get properties: %m");
return r;
}
static int show_session(int argc, char *argv[], void *userdata) {
bool properties, new_line = false;
sd_bus *bus = userdata;
int r, i;
assert(bus);
assert(argv);
properties = !strstr(argv[0], "status");
pager_open_if_enabled();
if (argc <= 1) {
/* If not argument is specified inspect the manager
* itself */
if (properties)
return show_properties(bus, "/org/freedesktop/login1", &new_line);
/* And in the pretty case, show data of the calling session */
return print_session_status_info(bus, "/org/freedesktop/login1/session/self", &new_line);
}
for (i = 1; i < argc; i++) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message * reply = NULL;
const char *path = NULL;
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"GetSession",
&error, &reply,
"s", argv[i]);
if (r < 0) {
log_error("Failed to get session: %s", bus_error_message(&error, r));
return r;
}
r = sd_bus_message_read(reply, "o", &path);
if (r < 0)
return bus_log_parse_error(r);
if (properties)
r = show_properties(bus, path, &new_line);
else
r = print_session_status_info(bus, path, &new_line);
if (r < 0)
return r;
}
return 0;
}
static int show_user(int argc, char *argv[], void *userdata) {
bool properties, new_line = false;
sd_bus *bus = userdata;
int r, i;
assert(bus);
assert(argv);
properties = !strstr(argv[0], "status");
pager_open_if_enabled();
if (argc <= 1) {
/* If not argument is specified inspect the manager
* itself */
if (properties)
return show_properties(bus, "/org/freedesktop/login1", &new_line);
return print_user_status_info(bus, "/org/freedesktop/login1/user/self", &new_line);
}
for (i = 1; i < argc; i++) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message * reply = NULL;
const char *path = NULL;
uid_t uid;
r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"GetUser",
&error, &reply,
"u", (uint32_t) uid);
if (r < 0) {
log_error("Failed to get user: %s", bus_error_message(&error, r));
return r;
}
r = sd_bus_message_read(reply, "o", &path);
if (r < 0)
return bus_log_parse_error(r);
if (properties)
r = show_properties(bus, path, &new_line);
else
r = print_user_status_info(bus, path, &new_line);
if (r < 0)
return r;
}
return 0;
}
static int show_seat(int argc, char *argv[], void *userdata) {
bool properties, new_line = false;
sd_bus *bus = userdata;
int r, i;
assert(bus);
assert(argv);
properties = !strstr(argv[0], "status");
pager_open_if_enabled();
if (argc <= 1) {
/* If not argument is specified inspect the manager
* itself */
if (properties)
return show_properties(bus, "/org/freedesktop/login1", &new_line);
return print_seat_status_info(bus, "/org/freedesktop/login1/seat/self", &new_line);
}
for (i = 1; i < argc; i++) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message * reply = NULL;
const char *path = NULL;
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"GetSeat",
&error, &reply,
"s", argv[i]);
if (r < 0) {
log_error("Failed to get seat: %s", bus_error_message(&error, r));
return r;
}
r = sd_bus_message_read(reply, "o", &path);
if (r < 0)
return bus_log_parse_error(r);
if (properties)
r = show_properties(bus, path, &new_line);
else
r = print_seat_status_info(bus, path, &new_line);
if (r < 0)
return r;
}
return 0;
}
static int activate(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
char *short_argv[3];
int r, i;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
if (argc < 2) {
/* No argument? Let's convert this into the empty
* session name, which the calls will then resolve to
* the caller's session. */
short_argv[0] = argv[0];
short_argv[1] = (char*) "";
short_argv[2] = NULL;
argv = short_argv;
argc = 2;
}
for (i = 1; i < argc; i++) {
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
streq(argv[0], "lock-session") ? "LockSession" :
streq(argv[0], "unlock-session") ? "UnlockSession" :
streq(argv[0], "terminate-session") ? "TerminateSession" :
"ActivateSession",
&error, NULL,
"s", argv[i]);
if (r < 0) {
log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int kill_session(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r, i;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
if (!arg_kill_who)
arg_kill_who = "all";
for (i = 1; i < argc; i++) {
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"KillSession",
&error, NULL,
"ssi", argv[i], arg_kill_who, arg_signal);
if (r < 0) {
log_error("Could not kill session: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int enable_linger(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
char* short_argv[3];
bool b;
int r, i;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
b = streq(argv[0], "enable-linger");
if (argc < 2) {
short_argv[0] = argv[0];
short_argv[1] = (char*) "";
short_argv[2] = NULL;
argv = short_argv;
argc = 2;
}
for (i = 1; i < argc; i++) {
uid_t uid;
if (isempty(argv[i]))
uid = UID_INVALID;
else {
r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
}
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"SetUserLinger",
&error, NULL,
"ubb", (uint32_t) uid, b, true);
if (r < 0) {
log_error("Could not enable linger: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int terminate_user(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r, i;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
for (i = 1; i < argc; i++) {
uid_t uid;
r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"TerminateUser",
&error, NULL,
"u", (uint32_t) uid);
if (r < 0) {
log_error("Could not terminate user: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int kill_user(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r, i;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
if (!arg_kill_who)
arg_kill_who = "all";
for (i = 1; i < argc; i++) {
uid_t uid;
r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"KillUser",
&error, NULL,
"ui", (uint32_t) uid, arg_signal);
if (r < 0) {
log_error("Could not kill user: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int attach(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r, i;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
for (i = 2; i < argc; i++) {
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"AttachDevice",
&error, NULL,
"ssb", argv[1], argv[i], true);
if (r < 0) {
log_error("Could not attach device: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int flush_devices(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"FlushDevices",
&error, NULL,
"b", true);
if (r < 0)
log_error("Could not flush devices: %s", bus_error_message(&error, -r));
return r;
}
static int lock_sessions(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
streq(argv[0], "lock-sessions") ? "LockSessions" : "UnlockSessions",
&error, NULL,
NULL);
if (r < 0)
log_error("Could not lock sessions: %s", bus_error_message(&error, -r));
return r;
}
static int terminate_seat(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
sd_bus *bus = userdata;
int r, i;
assert(bus);
assert(argv);
polkit_agent_open_if_enabled();
for (i = 1; i < argc; i++) {
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"TerminateSeat",
&error, NULL,
"s", argv[i]);
if (r < 0) {
log_error("Could not terminate seat: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int check_inhibitors(sd_bus *bus, const char *verb, const char *inhibit_what) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_strv_free_ char **sessions = NULL;
const char *what, *who, *why, *mode;
uint32_t uid, pid;
unsigned c = 0;
char **s;
int r;
assert(bus);
if (geteuid() == 0)
return 0;
if (!on_tty())
return 0;
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"ListInhibitors",
NULL,
&reply,
NULL);
if (r < 0)
/* If logind is not around, then there are no inhibitors... */
return 0;
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
_cleanup_free_ char *comm = NULL, *user = NULL;
_cleanup_strv_free_ char **sv = NULL;
if (!streq(mode, "block"))
continue;
sv = strv_split(what, ":");
if (!sv)
return log_oom();
if (!strv_contains(sv, inhibit_what))
continue;
get_process_comm(pid, &comm);
user = uid_to_name(uid);
log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",
who, pid, strna(comm), strna(user), why);
c++;
}
if (r < 0)
return bus_log_parse_error(r);
r = sd_bus_message_exit_container(reply);
if (r < 0)
return bus_log_parse_error(r);
/* Check for current sessions */
sd_get_sessions(&sessions);
STRV_FOREACH(s, sessions) {
_cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
continue;
if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
continue;
if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
continue;
sd_session_get_tty(*s, &tty);
sd_session_get_seat(*s, &seat);
sd_session_get_service(*s, &service);
user = uid_to_name(uid);
log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
c++;
}
if (c <= 0)
return 0;
log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'loginctl %s -i'.", verb);
return -EPERM;
}
static int poweroff(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
r = check_inhibitors(bus, "poweroff", "shutdown");
if (r < 0)
return r;
polkit_agent_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"PowerOff",
&error,
NULL,
"b", arg_ask_password);
if (r < 0)
log_error("Failed to power off: %s", bus_error_message(&error, r));
return r;
}
static int reboot(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
r = check_inhibitors(bus, "reboot", "shutdown");
if (r < 0)
return r;
polkit_agent_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"Reboot",
&error,
NULL,
"b", arg_ask_password);
if (r < 0)
log_error("Failed to reboot: %s", bus_error_message(&error, r));
return r;
}
static int suspend(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
r = check_inhibitors(bus, "suspend", "sleep");
if (r < 0)
return r;
polkit_agent_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"Suspend",
&error,
NULL,
"b", arg_ask_password);
if (r < 0)
log_error("Failed to suspend: %s", bus_error_message(&error, r));
return r;
}
static int hibernate(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
r = check_inhibitors(bus, "hibernate", "sleep");
if (r < 0)
return r;
polkit_agent_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"Hibernate",
&error,
NULL,
"b", arg_ask_password);
if (r < 0)
log_error("Failed to hibernate: %s", bus_error_message(&error, r));
return r;
}
static int hybrid_sleep(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
sd_bus *bus = userdata;
int r;
assert(bus);
r = check_inhibitors(bus, "hybrid-sleep", "sleep");
if (r < 0)
return r;
polkit_agent_open_if_enabled();
r = sd_bus_call_method(
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"HybridSleep",
&error,
NULL,
"b", arg_ask_password);
if (r < 0)
log_error("Failed to hybrid sleep: %s", bus_error_message(&error, r));
return r;
}
static int help(int argc, char *argv[], void *userdata) {
printf("%s [OPTIONS...] {COMMAND} ...\n\n"
"Send control commands to or query the login manager.\n\n"
" -h --help Show this help\n"
" --version Show package version\n"
" --no-pager Do not pipe output into a pager\n"
" --no-legend Do not show the headers and footers\n"
" --no-ask-password Don't prompt for password\n"
" -H --host=[USER@]HOST Operate on remote host\n"
" -M --machine=CONTAINER Operate on local container\n"
" -p --property=NAME Show only properties by this name\n"
" -a --all Show all properties, including empty ones\n"
" -l --full Do not ellipsize output\n"
" --kill-who=WHO Who to send signal to\n"
" -s --signal=SIGNAL Which signal to send\n"
#if 0
" -n --lines=INTEGER Number of journal entries to show\n"
" -o --output=STRING Change journal output mode (short, short-monotonic,\n"
" verbose, export, json, json-pretty, json-sse, cat)\n\n"
#endif // 0
"Session Commands:\n"
" list-sessions List sessions\n"
" session-status [ID...] Show session status\n"
" show-session [ID...] Show properties of sessions or the manager\n"
" activate [ID] Activate a session\n"
" lock-session [ID...] Screen lock one or more sessions\n"
" unlock-session [ID...] Screen unlock one or more sessions\n"
" lock-sessions Screen lock all current sessions\n"
" unlock-sessions Screen unlock all current sessions\n"
" terminate-session ID... Terminate one or more sessions\n"
" kill-session ID... Send signal to processes of a session\n\n"
"User Commands:\n"
" list-users List users\n"
" user-status [USER...] Show user status\n"
" show-user [USER...] Show properties of users or the manager\n"
" enable-linger [USER...] Enable linger state of one or more users\n"
" disable-linger [USER...] Disable linger state of one or more users\n"
" terminate-user USER... Terminate all sessions of one or more users\n"
" kill-user USER... Send signal to processes of a user\n\n"
"Seat Commands:\n"
" list-seats List seats\n"
" seat-status [NAME...] Show seat status\n"
" show-seat [NAME...] Show properties of seats or the manager\n"
" attach NAME DEVICE... Attach one or more devices to a seat\n"
" flush-devices Flush all device associations\n"
" terminate-seat NAME... Terminate all sessions on one or more seats\n"
"System Commands:\n"
" poweroff Turn off the machine\n"
" reboot Reboot the machine\n"
" suspend Suspend the machine to memory\n"
" hibernate Suspend the machine to disk\n"
" hybrid-sleep Suspend the machine to memory and disk\n"
, program_invocation_short_name);
return 0;
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_NO_PAGER,
ARG_NO_LEGEND,
ARG_KILL_WHO,
ARG_NO_ASK_PASSWORD,
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "property", required_argument, NULL, 'p' },
{ "all", no_argument, NULL, 'a' },
{ "full", no_argument, NULL, 'l' },
{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
{ "no-legend", no_argument, NULL, ARG_NO_LEGEND },
{ "kill-who", required_argument, NULL, ARG_KILL_WHO },
{ "signal", required_argument, NULL, 's' },
{ "host", required_argument, NULL, 'H' },
{ "machine", required_argument, NULL, 'M' },
{ "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
#if 0
{ "lines", required_argument, NULL, 'n' },
{ "output", required_argument, NULL, 'o' },
#endif //
{}
};
int c, r;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "hp:als:H:M:", options, NULL)) >= 0)
switch (c) {
case 'h':
help(0, NULL, NULL);
return 0;
case ARG_VERSION:
puts(PACKAGE_STRING);
puts(SYSTEMD_FEATURES);
return 0;
case 'p': {
r = strv_extend(&arg_property, optarg);
if (r < 0)
return log_oom();
/* If the user asked for a particular
* property, show it to him, even if it is
* empty. */
arg_all = true;
break;
}
case 'a':
arg_all = true;
break;
case 'l':
arg_full = true;
break;
#if 0
case 'n':
if (safe_atou(optarg, &arg_lines) < 0) {
log_error("Failed to parse lines '%s'", optarg);
return -EINVAL;
}
break;
case 'o':
arg_output = output_mode_from_string(optarg);
if (arg_output < 0) {
log_error("Unknown output '%s'.", optarg);
return -EINVAL;
}
break;
#endif // 0
case ARG_NO_PAGER:
arg_no_pager = true;
break;
case ARG_NO_LEGEND:
arg_legend = false;
break;
case ARG_NO_ASK_PASSWORD:
arg_ask_password = false;
break;
case ARG_KILL_WHO:
arg_kill_who = optarg;
break;
case 's':
arg_signal = signal_from_string_try_harder(optarg);
if (arg_signal < 0) {
log_error("Failed to parse signal string %s.", optarg);
return -EINVAL;
}
break;
case 'H':
arg_transport = BUS_TRANSPORT_REMOTE;
arg_host = optarg;
break;
case 'M':
arg_transport = BUS_TRANSPORT_MACHINE;
arg_host = optarg;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
return 1;
}
static int loginctl_main(int argc, char *argv[], sd_bus *bus) {
static const Verb verbs[] = {
{ "help", VERB_ANY, VERB_ANY, 0, help },
{ "list-sessions", VERB_ANY, 1, VERB_DEFAULT, list_sessions },
{ "session-status", VERB_ANY, VERB_ANY, 0, show_session },
{ "show-session", VERB_ANY, VERB_ANY, 0, show_session },
{ "activate", VERB_ANY, 2, 0, activate },
{ "lock-session", VERB_ANY, VERB_ANY, 0, activate },
{ "unlock-session", VERB_ANY, VERB_ANY, 0, activate },
{ "lock-sessions", VERB_ANY, 1, 0, lock_sessions },
{ "unlock-sessions", VERB_ANY, 1, 0, lock_sessions },
{ "terminate-session", 2, VERB_ANY, 0, activate },
{ "kill-session", 2, VERB_ANY, 0, kill_session },
{ "list-users", VERB_ANY, 1, 0, list_users },
{ "user-status", VERB_ANY, VERB_ANY, 0, show_user },
{ "show-user", VERB_ANY, VERB_ANY, 0, show_user },
{ "enable-linger", VERB_ANY, VERB_ANY, 0, enable_linger },
{ "disable-linger", VERB_ANY, VERB_ANY, 0, enable_linger },
{ "terminate-user", 2, VERB_ANY, 0, terminate_user },
{ "kill-user", 2, VERB_ANY, 0, kill_user },
{ "list-seats", VERB_ANY, 1, 0, list_seats },
{ "seat-status", VERB_ANY, VERB_ANY, 0, show_seat },
{ "show-seat", VERB_ANY, VERB_ANY, 0, show_seat },
{ "attach", 3, VERB_ANY, 0, attach },
{ "flush-devices", VERB_ANY, 1, 0, flush_devices },
{ "terminate-seat", 2, VERB_ANY, 0, terminate_seat },
{ "poweroff", VERB_ANY, 1, 0, poweroff },
{ "reboot", VERB_ANY, 1, 0, reboot },
{ "suspend", VERB_ANY, 1, 0, suspend },
{ "hibernate", VERB_ANY, 1, 0, hibernate },
{ "hybrid-sleep", VERB_ANY, 1, 0, hybrid_sleep },
{}
};
return dispatch_verb(argc, argv, verbs, bus);
}
int main(int argc, char *argv[]) {
_cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
int r;
setlocale(LC_ALL, "");
log_parse_environment();
log_open();
r = parse_argv(argc, argv);
if (r <= 0)
goto finish;
r = bus_open_transport(arg_transport, arg_host, false, &bus);
if (r < 0) {
log_error_errno(r, "Failed to create bus connection: %m");
goto finish;
}
sd_bus_set_allow_interactive_authorization(bus, arg_ask_password);
r = loginctl_main(argc, argv, bus);
finish:
pager_close();
polkit_agent_close();
strv_free(arg_property);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}