/*-*- 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
#include "sd-bus.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 "cgroup-show.h"
#include "cgroup-util.h"
#include "spawn-polkit-agent.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 bool arg_ask_password = true;
static char *arg_host = NULL;
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 int list_sessions(sd_bus *bus, char **args, unsigned n) {
_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;
unsigned k = 0;
uint32_t uid;
int r;
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(sd_bus *bus, char **args, unsigned n) {
_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;
unsigned k = 0;
uint32_t uid;
int r;
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(sd_bus *bus, char **args, unsigned n) {
_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;
unsigned k = 0;
int r;
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, output_flags;
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(SYSTEMD_CGROUP_CONTROLLER, cgroup, false) != 0 && leader <= 0)
return 0;
output_flags =
arg_all * OUTPUT_SHOW_ALL |
arg_full * OUTPUT_FULL_WIDTH;
c = columns();
if (c > 18)
c -= 18;
else
c = 0;
show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, "\t\t ", c, false, &leader, leader > 0, output_flags);
return 0;
}
typedef struct SessionStatusInfo {
const char *id;
uid_t uid;
const char *name;
usec_t timestamp;
unsigned int vtnr;
const char *seat;
const char *tty;
const char *display;
bool remote;
const char *remote_host;
const char *remote_user;
const char *service;
pid_t leader;
const char *type;
const char *class;
const char *state;
const char *scope;
const char *desktop;
} SessionStatusInfo;
typedef struct UserStatusInfo {
uid_t uid;
const char *name;
usec_t timestamp;
const char *state;
char **sessions;
const char *display;
const char *slice;
} UserStatusInfo;
typedef struct SeatStatusInfo {
const char *id;
const char *active_session;
char **sessions;
} SeatStatusInfo;
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;
free(*p);
*p = strdup(s);
if (!*p)
return -ENOMEM;
} 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) },
{ "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;
SessionStatusInfo i = {};
int r;
r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
if (r < 0) {
log_error("Could not get properties: %s", strerror(-r));
return r;
}
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);
s2 = format_timestamp(since2, sizeof(since2), i.timestamp);
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%i", 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);
}
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) },
{ "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;
UserStatusInfo i = {};
int r;
r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
if (r < 0) {
log_error("Could not get properties: %s", strerror(-r));
goto finish;
}
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);
s2 = format_timestamp(since2, sizeof(since2), i.timestamp);
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);
}
finish:
strv_free(i.sessions);
return r;
}
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) },
{}
};
SeatStatusInfo i = {};
int r;
r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
if (r < 0) {
log_error("Could not get properties: %s", strerror(-r));
goto finish;
}
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);
}
finish:
strv_free(i.sessions);
return r;
}
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("Could not get properties: %s", strerror(-r));
return r;
}
static int show_session(sd_bus *bus, char **args, unsigned n) {
bool properties, new_line = false;
unsigned i;
int r;
assert(bus);
assert(args);
properties = !strstr(args[0], "status");
pager_open_if_enabled();
if (properties && n <= 1) {
/* If not argument is specified inspect the manager
* itself */
return show_properties(bus, "/org/freedesktop/login1", &new_line);
}
for (i = 1; i < n; 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", args[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(sd_bus *bus, char **args, unsigned n) {
bool properties, new_line = false;
unsigned i;
int r;
assert(bus);
assert(args);
properties = !strstr(args[0], "status");
pager_open_if_enabled();
if (properties && n <= 1) {
/* If not argument is specified inspect the manager
* itself */
return show_properties(bus, "/org/freedesktop/login1", &new_line);
}
for (i = 1; i < n; 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**) (args+i), &uid, NULL, NULL, NULL);
if (r < 0) {
log_error("Failed to look up user %s: %s", args[i], strerror(-r));
return r;
}
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(sd_bus *bus, char **args, unsigned n) {
bool properties, new_line = false;
unsigned i;
int r;
assert(bus);
assert(args);
properties = !strstr(args[0], "status");
pager_open_if_enabled();
if (properties && n <= 1) {
/* If not argument is specified inspect the manager
* itself */
return show_properties(bus, "/org/freedesktop/login1", &new_line);
}
for (i = 1; i < n; 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", args[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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned i;
int r;
assert(args);
for (i = 1; i < n; i++) {
r = sd_bus_call_method (
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
streq(args[0], "lock-session") ? "LockSession" :
streq(args[0], "unlock-session") ? "UnlockSession" :
streq(args[0], "terminate-session") ? "TerminateSession" :
"ActivateSession",
&error, NULL,
"s", args[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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned i;
int r;
assert(args);
if (!arg_kill_who)
arg_kill_who = "all";
for (i = 1; i < n; i++) {
r = sd_bus_call_method (
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"KillSession",
&error, NULL,
"ssi", args[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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned i;
bool b;
int r;
assert(args);
polkit_agent_open_if_enabled();
b = streq(args[0], "enable-linger");
for (i = 1; i < n; i++) {
uid_t uid;
r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);
if (r < 0) {
log_error("Failed to look up user %s: %s", args[i], strerror(-r));
return r;
}
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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned i;
int r;
assert(args);
for (i = 1; i < n; i++) {
uid_t uid;
r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);
if (r < 0) {
log_error("Failed to look up user %s: %s", args[i], strerror(-r));
return r;
}
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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned i;
int r;
assert(args);
if (!arg_kill_who)
arg_kill_who = "all";
for (i = 1; i < n; i++) {
uid_t uid;
r = get_user_creds((const char**) (args+i), &uid, NULL, NULL, NULL);
if (r < 0) {
log_error("Failed to look up user %s: %s", args[i], strerror(-r));
return r;
}
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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned i;
int r;
assert(args);
polkit_agent_open_if_enabled();
for (i = 2; i < n; i++) {
r = sd_bus_call_method (
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"AttachDevice",
&error, NULL,
"ssb", args[1], args[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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
assert(args);
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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
int r;
assert(args);
r = sd_bus_call_method (
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
streq(args[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(sd_bus *bus, char **args, unsigned n) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
unsigned i;
int r;
assert(args);
for (i = 1; i < n; i++) {
r = sd_bus_call_method (
bus,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
"TerminateSeat",
&error, NULL,
"s", args[i]);
if (r < 0) {
log_error("Could not terminate seat: %s", bus_error_message(&error, -r));
return r;
}
}
return 0;
}
static int help(void) {
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\n"
"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"
" 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"
" list-seats List seats\n"
" seat-status NAME... Show seat status\n"
" show-seat NAME... Show properties of one or more seats\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",
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 },
{}
};
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':
return help();
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;
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_CONTAINER;
arg_host = optarg;
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
}
return 1;
}
static int loginctl_main(sd_bus *bus, int argc, char *argv[]) {
static const struct {
const char* verb;
const enum {
MORE,
LESS,
EQUAL
} argc_cmp;
const int argc;
int (* const dispatch)(sd_bus *bus, char **args, unsigned n);
} verbs[] = {
{ "list-sessions", LESS, 1, list_sessions },
{ "session-status", MORE, 2, show_session },
{ "show-session", MORE, 1, show_session },
{ "activate", EQUAL, 2, activate },
{ "lock-session", MORE, 2, activate },
{ "unlock-session", MORE, 2, activate },
{ "lock-sessions", EQUAL, 1, lock_sessions },
{ "unlock-sessions", EQUAL, 1, lock_sessions },
{ "terminate-session", MORE, 2, activate },
{ "kill-session", MORE, 2, kill_session },
{ "list-users", EQUAL, 1, list_users },
{ "user-status", MORE, 2, show_user },
{ "show-user", MORE, 1, show_user },
{ "enable-linger", MORE, 2, enable_linger },
{ "disable-linger", MORE, 2, enable_linger },
{ "terminate-user", MORE, 2, terminate_user },
{ "kill-user", MORE, 2, kill_user },
{ "list-seats", EQUAL, 1, list_seats },
{ "seat-status", MORE, 2, show_seat },
{ "show-seat", MORE, 1, show_seat },
{ "attach", MORE, 3, attach },
{ "flush-devices", EQUAL, 1, flush_devices },
{ "terminate-seat", MORE, 2, terminate_seat },
};
int left;
unsigned i;
assert(argc >= 0);
assert(argv);
left = argc - optind;
if (left <= 0)
/* Special rule: no arguments means "list-sessions" */
i = 0;
else {
if (streq(argv[optind], "help")) {
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.");
}
return verbs[i].dispatch(bus, argv + optind, left);
}
int main(int argc, char *argv[]) {
_cleanup_bus_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("Failed to create bus connection: %s", strerror(-r));
goto finish;
}
r = loginctl_main(bus, argc, argv);
finish:
pager_close();
strv_free(arg_property);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}