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Systemd/src/login/logind-dbus.c

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/***
This file is part of systemd.
Copyright 2011 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 <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <pwd.h>
#include <string.h>
#include <unistd.h>
#include "sd-messages.h"
#include "alloc-util.h"
#include "audit-util.h"
#include "bus-common-errors.h"
#include "bus-error.h"
#include "bus-util.h"
#include "dirent-util.h"
#include "efivars.h"
#include "escape.h"
#include "fd-util.h"
#include "fileio-label.h"
#include "format-util.h"
#include "fs-util.h"
#include "logind.h"
#include "mkdir.h"
#include "path-util.h"
#include "process-util.h"
#include "selinux-util.h"
#include "sleep-config.h"
#include "special.h"
#include "strv.h"
#include "terminal-util.h"
#include "udev-util.h"
#include "unit-name.h"
#include "user-util.h"
#include "utmp-wtmp.h"
int manager_get_session_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Session **ret) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
Session *session;
int r;
assert(m);
assert(message);
assert(ret);
if (isempty(name)) {
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_session(creds, &name);
if (r < 0)
return r;
}
session = hashmap_get(m->sessions, name);
if (!session)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
*ret = session;
return 0;
}
int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
User *user;
int r;
assert(m);
assert(message);
assert(ret);
if (uid == UID_INVALID) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
/* Note that we get the owner UID of the session, not the actual client UID here! */
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_owner_uid(creds, &uid);
if (r < 0)
return r;
}
user = hashmap_get(m->users, UID_TO_PTR(uid));
if (!user)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user "UID_FMT" known or logged in", uid);
*ret = user;
return 0;
}
int manager_get_seat_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Seat **ret) {
Seat *seat;
int r;
assert(m);
assert(message);
assert(ret);
if (isempty(name)) {
Session *session;
r = manager_get_session_from_creds(m, message, NULL, error, &session);
if (r < 0)
return r;
seat = session->seat;
if (!seat)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session has no seat.");
} else {
seat = hashmap_get(m->seats, name);
if (!seat)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
}
*ret = seat;
return 0;
}
static int property_get_idle_hint(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
}
static int property_get_idle_since_hint(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
dual_timestamp t = DUAL_TIMESTAMP_NULL;
assert(bus);
assert(reply);
assert(m);
manager_get_idle_hint(m, &t);
return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
}
static int property_get_inhibited(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
InhibitWhat w;
assert(bus);
assert(reply);
assert(m);
w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
}
static int property_get_preparing(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
bool b;
assert(bus);
assert(reply);
assert(m);
if (streq(property, "PreparingForShutdown"))
b = !!(m->action_what & INHIBIT_SHUTDOWN);
else
b = !!(m->action_what & INHIBIT_SLEEP);
return sd_bus_message_append(reply, "b", b);
}
static int property_get_scheduled_shutdown(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(bus);
assert(reply);
assert(m);
r = sd_bus_message_open_container(reply, 'r', "st");
if (r < 0)
return r;
r = sd_bus_message_append(reply, "st", m->scheduled_shutdown_type, m->scheduled_shutdown_timeout);
if (r < 0)
return r;
return sd_bus_message_close_container(reply);
}
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
static int property_get_docked(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
return sd_bus_message_append(reply, "b", manager_is_docked_or_external_displays(m));
}
static int property_get_current_sessions(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->sessions));
}
static int property_get_current_inhibitors(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
assert(bus);
assert(reply);
assert(m);
return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->inhibitors));
}
static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Manager *m = userdata;
const char *name;
Session *session;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_get_session_from_creds(m, message, name, error, &session);
if (r < 0)
return r;
p = session_bus_path(session);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", p);
}
static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Session *session = NULL;
Manager *m = userdata;
pid_t pid;
int r;
assert(message);
assert(m);
assert_cc(sizeof(pid_t) == sizeof(uint32_t));
r = sd_bus_message_read(message, "u", &pid);
if (r < 0)
return r;
if (pid < 0)
return -EINVAL;
if (pid == 0) {
r = manager_get_session_from_creds(m, message, NULL, error, &session);
if (r < 0)
return r;
} else {
r = manager_get_session_by_pid(m, pid, &session);
if (r < 0)
return r;
if (!session)
return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID, "PID "PID_FMT" does not belong to any known session", pid);
}
p = session_bus_path(session);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", p);
}
static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Manager *m = userdata;
uint32_t uid;
User *user;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "u", &uid);
if (r < 0)
return r;
r = manager_get_user_from_creds(m, message, uid, error, &user);
if (r < 0)
return r;
p = user_bus_path(user);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", p);
}
static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Manager *m = userdata;
User *user = NULL;
pid_t pid;
int r;
assert(message);
assert(m);
assert_cc(sizeof(pid_t) == sizeof(uint32_t));
r = sd_bus_message_read(message, "u", &pid);
if (r < 0)
return r;
if (pid < 0)
return -EINVAL;
if (pid == 0) {
r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
if (r < 0)
return r;
} else {
r = manager_get_user_by_pid(m, pid, &user);
if (r < 0)
return r;
if (!user)
return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID, "PID "PID_FMT" does not belong to any known or logged in user", pid);
}
p = user_bus_path(user);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", p);
}
static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *p = NULL;
Manager *m = userdata;
const char *name;
Seat *seat;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_get_seat_from_creds(m, message, name, error, &seat);
if (r < 0)
return r;
p = seat_bus_path(seat);
if (!p)
return -ENOMEM;
return sd_bus_reply_method_return(message, "o", p);
}
static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
Manager *m = userdata;
Session *session;
Iterator i;
int r;
assert(message);
assert(m);
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "(susso)");
if (r < 0)
return r;
HASHMAP_FOREACH(session, m->sessions, i) {
_cleanup_free_ char *p = NULL;
p = session_bus_path(session);
if (!p)
return -ENOMEM;
r = sd_bus_message_append(reply, "(susso)",
session->id,
(uint32_t) session->user->uid,
session->user->name,
session->seat ? session->seat->id : "",
p);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(NULL, reply, NULL);
}
static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
Manager *m = userdata;
User *user;
Iterator i;
int r;
assert(message);
assert(m);
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "(uso)");
if (r < 0)
return r;
HASHMAP_FOREACH(user, m->users, i) {
_cleanup_free_ char *p = NULL;
p = user_bus_path(user);
if (!p)
return -ENOMEM;
r = sd_bus_message_append(reply, "(uso)",
(uint32_t) user->uid,
user->name,
p);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(NULL, reply, NULL);
}
static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
Manager *m = userdata;
Seat *seat;
Iterator i;
int r;
assert(message);
assert(m);
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "(so)");
if (r < 0)
return r;
HASHMAP_FOREACH(seat, m->seats, i) {
_cleanup_free_ char *p = NULL;
p = seat_bus_path(seat);
if (!p)
return -ENOMEM;
r = sd_bus_message_append(reply, "(so)", seat->id, p);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(NULL, reply, NULL);
}
static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
Manager *m = userdata;
Inhibitor *inhibitor;
Iterator i;
int r;
assert(message);
assert(m);
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
if (r < 0)
return r;
HASHMAP_FOREACH(inhibitor, m->inhibitors, i) {
r = sd_bus_message_append(reply, "(ssssuu)",
strempty(inhibit_what_to_string(inhibitor->what)),
strempty(inhibitor->who),
strempty(inhibitor->why),
strempty(inhibit_mode_to_string(inhibitor->mode)),
(uint32_t) inhibitor->uid,
(uint32_t) inhibitor->pid);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(NULL, reply, NULL);
}
static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
uint32_t audit_id = 0;
_cleanup_free_ char *id = NULL;
Session *session = NULL;
Manager *m = userdata;
User *user = NULL;
Seat *seat = NULL;
pid_t leader;
uid_t uid;
int remote;
uint32_t vtnr = 0;
SessionType t;
SessionClass c;
int r;
assert(message);
assert(m);
assert_cc(sizeof(pid_t) == sizeof(uint32_t));
assert_cc(sizeof(uid_t) == sizeof(uint32_t));
r = sd_bus_message_read(message, "uusssssussbss", &uid, &leader, &service, &type, &class, &desktop, &cseat, &vtnr, &tty, &display, &remote, &remote_user, &remote_host);
if (r < 0)
return r;
if (!uid_is_valid(uid))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
if (leader < 0 || leader == 1)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
if (isempty(type))
t = _SESSION_TYPE_INVALID;
else {
t = session_type_from_string(type);
if (t < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session type %s", type);
}
if (isempty(class))
c = _SESSION_CLASS_INVALID;
else {
c = session_class_from_string(class);
if (c < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session class %s", class);
}
if (isempty(desktop))
desktop = NULL;
else {
if (!string_is_safe(desktop))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid desktop string %s", desktop);
}
if (isempty(cseat))
seat = NULL;
else {
seat = hashmap_get(m->seats, cseat);
if (!seat)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", cseat);
}
if (tty_is_vc(tty)) {
int v;
if (!seat)
seat = m->seat0;
else if (seat != m->seat0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
v = vtnr_from_tty(tty);
if (v <= 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot determine VT number from virtual console TTY %s", tty);
if (!vtnr)
vtnr = (uint32_t) v;
else if (vtnr != (uint32_t) v)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified TTY and VT number do not match");
} else if (tty_is_console(tty)) {
if (!seat)
seat = m->seat0;
else if (seat != m->seat0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but seat is not seat0");
if (vtnr != 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but VT number is not 0");
}
if (seat) {
if (seat_has_vts(seat)) {
if (!vtnr || vtnr > 63)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "VT number out of range");
} else {
if (vtnr != 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat has no VTs but VT number not 0");
}
}
r = sd_bus_message_enter_container(message, 'a', "(sv)");
if (r < 0)
return r;
if (t == _SESSION_TYPE_INVALID) {
if (!isempty(display))
t = SESSION_X11;
else if (!isempty(tty))
t = SESSION_TTY;
else
t = SESSION_UNSPECIFIED;
}
if (c == _SESSION_CLASS_INVALID) {
if (t == SESSION_UNSPECIFIED)
c = SESSION_BACKGROUND;
else
c = SESSION_USER;
}
if (leader == 0) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
if (r < 0)
return r;
}
r = manager_get_session_by_pid(m, leader, NULL);
if (r > 0)
return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already running in a session");
/*
* Old gdm and lightdm start the user-session on the same VT as
* the greeter session. But they destroy the greeter session
* after the user-session and want the user-session to take
* over the VT. We need to support this for
* backwards-compatibility, so make sure we allow new sessions
* on a VT that a greeter is running on. Furthermore, to allow
* re-logins, we have to allow a greeter to take over a used VT for
* the exact same reasons.
*/
if (c != SESSION_GREETER &&
vtnr > 0 &&
vtnr < m->seat0->position_count &&
m->seat0->positions[vtnr] &&
m->seat0->positions[vtnr]->class != SESSION_GREETER)
return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
if (hashmap_size(m->sessions) >= m->sessions_max)
return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.", m->sessions_max);
audit_session_from_pid(leader, &audit_id);
if (audit_id > 0) {
/* Keep our session IDs and the audit session IDs in sync */
if (asprintf(&id, "%"PRIu32, audit_id) < 0)
return -ENOMEM;
/* Wut? There's already a session by this name and we
* didn't find it above? Weird, then let's not trust
* the audit data and let's better register a new
* ID */
if (hashmap_get(m->sessions, id)) {
log_warning("Existing logind session ID %s used by new audit session, ignoring", id);
audit_id = 0;
id = mfree(id);
}
}
if (!id) {
do {
id = mfree(id);
if (asprintf(&id, "c%lu", ++m->session_counter) < 0)
return -ENOMEM;
} while (hashmap_get(m->sessions, id));
}
r = manager_add_user_by_uid(m, uid, &user);
if (r < 0)
goto fail;
r = manager_add_session(m, id, &session);
if (r < 0)
goto fail;
session_set_user(session, user);
session->leader = leader;
session->audit_id = audit_id;
session->type = t;
session->class = c;
session->remote = remote;
session->vtnr = vtnr;
if (!isempty(tty)) {
session->tty = strdup(tty);
if (!session->tty) {
r = -ENOMEM;
goto fail;
}
}
if (!isempty(display)) {
session->display = strdup(display);
if (!session->display) {
r = -ENOMEM;
goto fail;
}
}
if (!isempty(remote_user)) {
session->remote_user = strdup(remote_user);
if (!session->remote_user) {
r = -ENOMEM;
goto fail;
}
}
if (!isempty(remote_host)) {
session->remote_host = strdup(remote_host);
if (!session->remote_host) {
r = -ENOMEM;
goto fail;
}
}
if (!isempty(service)) {
session->service = strdup(service);
if (!session->service) {
r = -ENOMEM;
goto fail;
}
}
if (!isempty(desktop)) {
session->desktop = strdup(desktop);
if (!session->desktop) {
r = -ENOMEM;
goto fail;
}
}
if (seat) {
r = seat_attach_session(seat, session);
if (r < 0)
goto fail;
}
r = session_start(session);
if (r < 0)
goto fail;
session->create_message = sd_bus_message_ref(message);
/* Now, let's wait until the slice unit and stuff got
* created. We send the reply back from
* session_send_create_reply(). */
return 1;
fail:
if (session)
session_add_to_gc_queue(session);
if (user)
user_add_to_gc_queue(user);
return r;
}
static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Session *session;
const char *name;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_get_session_from_creds(m, message, name, error, &session);
if (r < 0)
return r;
r = session_release(session);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Session *session;
const char *name;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_get_session_from_creds(m, message, name, error, &session);
if (r < 0)
return r;
return bus_session_method_activate(message, session, error);
}
static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *session_name, *seat_name;
Manager *m = userdata;
Session *session;
Seat *seat;
int r;
assert(message);
assert(m);
/* Same as ActivateSession() but refuses to work if
* the seat doesn't match */
r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
if (r < 0)
return r;
r = manager_get_session_from_creds(m, message, session_name, error, &session);
if (r < 0)
return r;
r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
if (r < 0)
return r;
if (session->seat != seat)
return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT, "Session %s not on seat %s", session_name, seat_name);
r = session_activate(session);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Session *session;
const char *name;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_get_session_from_creds(m, message, name, error, &session);
if (r < 0)
return r;
return bus_session_method_lock(message, session, error);
}
static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int r;
assert(message);
assert(m);
r = bus_verify_polkit_async(
message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.lock-sessions",
NULL,
false,
UID_INVALID,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *name;
Manager *m = userdata;
Session *session;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_get_session_from_creds(m, message, name, error, &session);
if (r < 0)
return r;
return bus_session_method_kill(message, session, error);
}
static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
uint32_t uid;
User *user;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "u", &uid);
if (r < 0)
return r;
r = manager_get_user_from_creds(m, message, uid, error, &user);
if (r < 0)
return r;
return bus_user_method_kill(message, user, error);
}
static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
Session *session;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_get_session_from_creds(m, message, name, error, &session);
if (r < 0)
return r;
return bus_session_method_terminate(message, session, error);
}
static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
uint32_t uid;
User *user;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "u", &uid);
if (r < 0)
return r;
r = manager_get_user_from_creds(m, message, uid, error, &user);
if (r < 0)
return r;
return bus_user_method_terminate(message, user, error);
}
static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
const char *name;
Seat *seat;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &name);
if (r < 0)
return r;
r = manager_get_seat_from_creds(m, message, name, error, &seat);
if (r < 0)
return r;
return bus_seat_method_terminate(message, seat, error);
}
static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *cc = NULL;
Manager *m = userdata;
int r, b, interactive;
struct passwd *pw;
const char *path;
uint32_t uid;
bool self = false;
assert(message);
assert(m);
r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
if (r < 0)
return r;
if (uid == UID_INVALID) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
/* Note that we get the owner UID of the session, not the actual client UID here! */
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_owner_uid(creds, &uid);
if (r < 0)
return r;
self = true;
} else if (!uid_is_valid(uid))
return -EINVAL;
errno = 0;
pw = getpwuid(uid);
if (!pw)
return errno > 0 ? -errno : -ENOENT;
r = bus_verify_polkit_async(
message,
CAP_SYS_ADMIN,
self ? "org.freedesktop.login1.set-self-linger" : "org.freedesktop.login1.set-user-linger",
NULL,
interactive,
UID_INVALID,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
mkdir_p_label("/var/lib/systemd", 0755);
r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0);
if (r < 0)
return r;
cc = cescape(pw->pw_name);
if (!cc)
return -ENOMEM;
path = strjoina("/var/lib/systemd/linger/", cc);
if (b) {
User *u;
r = touch(path);
if (r < 0)
return r;
if (manager_add_user_by_uid(m, uid, &u) >= 0)
user_start(u);
} else {
User *u;
r = unlink(path);
if (r < 0 && errno != ENOENT)
return -errno;
u = hashmap_get(m->users, UID_TO_PTR(uid));
if (u)
user_add_to_gc_queue(u);
}
return sd_bus_reply_method_return(message, NULL);
}
static int trigger_device(Manager *m, struct udev_device *d) {
_cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
struct udev_list_entry *first, *item;
int r;
assert(m);
e = udev_enumerate_new(m->udev);
if (!e)
return -ENOMEM;
if (d) {
r = udev_enumerate_add_match_parent(e, d);
if (r < 0)
return r;
}
r = udev_enumerate_scan_devices(e);
if (r < 0)
return r;
first = udev_enumerate_get_list_entry(e);
udev_list_entry_foreach(item, first) {
_cleanup_free_ char *t = NULL;
const char *p;
p = udev_list_entry_get_name(item);
t = strappend(p, "/uevent");
if (!t)
return -ENOMEM;
write_string_file(t, "change", WRITE_STRING_FILE_CREATE);
}
return 0;
}
static int attach_device(Manager *m, const char *seat, const char *sysfs) {
_cleanup_udev_device_unref_ struct udev_device *d = NULL;
_cleanup_free_ char *rule = NULL, *file = NULL;
const char *id_for_seat;
int r;
assert(m);
assert(seat);
assert(sysfs);
d = udev_device_new_from_syspath(m->udev, sysfs);
if (!d)
return -ENODEV;
if (!udev_device_has_tag(d, "seat"))
return -ENODEV;
id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");
if (!id_for_seat)
return -ENODEV;
if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
return -ENOMEM;
if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
return -ENOMEM;
mkdir_p_label("/etc/udev/rules.d", 0755);
r = write_string_file_atomic_label(file, rule);
if (r < 0)
return r;
return trigger_device(m, d);
}
static int flush_devices(Manager *m) {
_cleanup_closedir_ DIR *d;
assert(m);
d = opendir("/etc/udev/rules.d");
if (!d) {
if (errno != ENOENT)
log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
} else {
struct dirent *de;
FOREACH_DIRENT_ALL(de, d, break) {
if (!dirent_is_file(de))
continue;
if (!startswith(de->d_name, "72-seat-"))
continue;
if (!endswith(de->d_name, ".rules"))
continue;
if (unlinkat(dirfd(d), de->d_name, 0) < 0)
log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
}
}
return trigger_device(m, NULL);
}
static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *sysfs, *seat;
Manager *m = userdata;
int interactive, r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
if (r < 0)
return r;
if (!path_startswith(sysfs, "/sys"))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
if (!seat_name_is_valid(seat))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat %s is not valid", seat);
r = bus_verify_polkit_async(
message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.attach-device",
NULL,
interactive,
UID_INVALID,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = attach_device(m, seat, sysfs);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
int interactive, r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "b", &interactive);
if (r < 0)
return r;
r = bus_verify_polkit_async(
message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.flush-devices",
NULL,
interactive,
UID_INVALID,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = flush_devices(m);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int have_multiple_sessions(
Manager *m,
uid_t uid) {
Session *session;
Iterator i;
assert(m);
/* Check for other users' sessions. Greeter sessions do not
* count, and non-login sessions do not count either. */
HASHMAP_FOREACH(session, m->sessions, i)
if (session->class == SESSION_USER &&
session->user->uid != uid)
return true;
return false;
}
static int bus_manager_log_shutdown(
Manager *m,
InhibitWhat w,
const char *unit_name) {
const char *p, *q;
assert(m);
assert(unit_name);
if (w != INHIBIT_SHUTDOWN)
return 0;
if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
p = "MESSAGE=System is powering down";
q = "SHUTDOWN=power-off";
} else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
p = "MESSAGE=System is halting";
q = "SHUTDOWN=halt";
} else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
p = "MESSAGE=System is rebooting";
q = "SHUTDOWN=reboot";
} else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
p = "MESSAGE=System is rebooting with kexec";
q = "SHUTDOWN=kexec";
} else {
p = "MESSAGE=System is shutting down";
q = NULL;
}
if (isempty(m->wall_message))
p = strjoina(p, ".");
else
p = strjoina(p, " (", m->wall_message, ").");
return log_struct(LOG_NOTICE,
LOG_MESSAGE_ID(SD_MESSAGE_SHUTDOWN),
p,
q,
NULL);
}
static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
Manager *m = userdata;
assert(e);
assert(m);
m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
return 0;
}
int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
int r;
assert(m);
if (until <= now(CLOCK_MONOTONIC))
return 0;
/* We want to ignore the lid switch for a while after each
* suspend, and after boot-up. Hence let's install a timer for
* this. As long as the event source exists we ignore the lid
* switch. */
if (m->lid_switch_ignore_event_source) {
usec_t u;
r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
if (r < 0)
return r;
if (until <= u)
return 0;
r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
} else
r = sd_event_add_time(
m->event,
&m->lid_switch_ignore_event_source,
CLOCK_MONOTONIC,
until, 0,
lid_switch_ignore_handler, m);
return r;
}
static void reset_scheduled_shutdown(Manager *m) {
m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
m->scheduled_shutdown_timeout = 0;
m->shutdown_dry_run = false;
if (m->unlink_nologin) {
(void) unlink("/run/nologin");
m->unlink_nologin = false;
}
}
static int execute_shutdown_or_sleep(
Manager *m,
InhibitWhat w,
const char *unit_name,
sd_bus_error *error) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
char *c = NULL;
const char *p;
int r;
assert(m);
assert(w >= 0);
assert(w < _INHIBIT_WHAT_MAX);
assert(unit_name);
bus_manager_log_shutdown(m, w, unit_name);
if (m->shutdown_dry_run) {
log_info("Running in dry run, suppressing action.");
reset_scheduled_shutdown(m);
} else {
r = sd_bus_call_method(
m->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartUnit",
error,
&reply,
"ss", unit_name, "replace-irreversibly");
if (r < 0)
return r;
r = sd_bus_message_read(reply, "o", &p);
if (r < 0)
return r;
c = strdup(p);
if (!c)
return -ENOMEM;
}
m->action_unit = unit_name;
free(m->action_job);
m->action_job = c;
m->action_what = w;
/* Make sure the lid switch is ignored for a while */
manager_set_lid_switch_ignore(m, now(CLOCK_MONOTONIC) + m->holdoff_timeout_usec);
return 0;
}
int manager_dispatch_delayed(Manager *manager, bool timeout) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
Inhibitor *offending = NULL;
int r;
assert(manager);
if (manager->action_what == 0 || manager->action_job)
return 0;
if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
_cleanup_free_ char *comm = NULL, *u = NULL;
if (!timeout)
return 0;
(void) get_process_comm(offending->pid, &comm);
u = uid_to_name(offending->uid);
log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
offending->uid, strna(u),
offending->pid, strna(comm));
}
/* Actually do the operation */
r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
if (r < 0) {
log_warning("Failed to send delayed message: %s", bus_error_message(&error, r));
manager->action_unit = NULL;
manager->action_what = 0;
return r;
}
return 1;
}
static int manager_inhibit_timeout_handler(
sd_event_source *s,
uint64_t usec,
void *userdata) {
Manager *manager = userdata;
int r;
assert(manager);
assert(manager->inhibit_timeout_source == s);
r = manager_dispatch_delayed(manager, true);
return (r < 0) ? r : 0;
}
static int delay_shutdown_or_sleep(
Manager *m,
InhibitWhat w,
const char *unit_name) {
int r;
usec_t timeout_val;
assert(m);
assert(w >= 0);
assert(w < _INHIBIT_WHAT_MAX);
assert(unit_name);
timeout_val = now(CLOCK_MONOTONIC) + m->inhibit_delay_max;
if (m->inhibit_timeout_source) {
r = sd_event_source_set_time(m->inhibit_timeout_source, timeout_val);
if (r < 0)
return log_error_errno(r, "sd_event_source_set_time() failed: %m");
r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
if (r < 0)
return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
} else {
r = sd_event_add_time(m->event, &m->inhibit_timeout_source, CLOCK_MONOTONIC,
timeout_val, 0, manager_inhibit_timeout_handler, m);
if (r < 0)
return r;
}
m->action_unit = unit_name;
m->action_what = w;
return 0;
}
static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
[INHIBIT_SHUTDOWN] = "PrepareForShutdown",
[INHIBIT_SLEEP] = "PrepareForSleep"
};
int active = _active;
assert(m);
assert(w >= 0);
assert(w < _INHIBIT_WHAT_MAX);
assert(signal_name[w]);
return sd_bus_emit_signal(m->bus,
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
signal_name[w],
"b",
active);
}
int bus_manager_shutdown_or_sleep_now_or_later(
Manager *m,
const char *unit_name,
InhibitWhat w,
sd_bus_error *error) {
bool delayed;
int r;
assert(m);
assert(unit_name);
assert(w >= 0);
assert(w <= _INHIBIT_WHAT_MAX);
assert(!m->action_job);
/* Tell everybody to prepare for shutdown/sleep */
send_prepare_for(m, w, true);
delayed =
m->inhibit_delay_max > 0 &&
manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
if (delayed)
/* Shutdown is delayed, keep in mind what we
* want to do, and start a timeout */
r = delay_shutdown_or_sleep(m, w, unit_name);
else
/* Shutdown is not delayed, execute it
* immediately */
r = execute_shutdown_or_sleep(m, w, unit_name, error);
return r;
}
static int verify_shutdown_creds(
Manager *m,
sd_bus_message *message,
InhibitWhat w,
bool interactive,
const char *action,
const char *action_multiple_sessions,
const char *action_ignore_inhibit,
sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
bool multiple_sessions, blocked;
uid_t uid;
int r;
assert(m);
assert(message);
assert(w >= 0);
assert(w <= _INHIBIT_WHAT_MAX);
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_euid(creds, &uid);
if (r < 0)
return r;
r = have_multiple_sessions(m, uid);
if (r < 0)
return r;
multiple_sessions = r > 0;
blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
if (multiple_sessions && action_multiple_sessions) {
r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
}
if (blocked && action_ignore_inhibit) {
r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
}
if (!multiple_sessions && !blocked && action) {
r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
}
return 0;
}
static int method_do_shutdown_or_sleep(
Manager *m,
sd_bus_message *message,
const char *unit_name,
InhibitWhat w,
const char *action,
const char *action_multiple_sessions,
const char *action_ignore_inhibit,
const char *sleep_verb,
sd_bus_error *error) {
int interactive, r;
assert(m);
assert(message);
assert(unit_name);
assert(w >= 0);
assert(w <= _INHIBIT_WHAT_MAX);
r = sd_bus_message_read(message, "b", &interactive);
if (r < 0)
return r;
/* Don't allow multiple jobs being executed at the same time */
if (m->action_what)
return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress");
if (sleep_verb) {
r = can_sleep(sleep_verb);
if (r < 0)
return r;
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported");
}
r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions,
action_ignore_inhibit, error);
if (r != 0)
return r;
r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_do_shutdown_or_sleep(
m, message,
SPECIAL_POWEROFF_TARGET,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.power-off",
"org.freedesktop.login1.power-off-multiple-sessions",
"org.freedesktop.login1.power-off-ignore-inhibit",
NULL,
error);
}
static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_do_shutdown_or_sleep(
m, message,
SPECIAL_REBOOT_TARGET,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.reboot",
"org.freedesktop.login1.reboot-multiple-sessions",
"org.freedesktop.login1.reboot-ignore-inhibit",
NULL,
error);
}
static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_do_shutdown_or_sleep(
m, message,
SPECIAL_SUSPEND_TARGET,
INHIBIT_SLEEP,
"org.freedesktop.login1.suspend",
"org.freedesktop.login1.suspend-multiple-sessions",
"org.freedesktop.login1.suspend-ignore-inhibit",
"suspend",
error);
}
static int nologin_timeout_handler(
sd_event_source *s,
uint64_t usec,
void *userdata) {
Manager *m = userdata;
int r;
log_info("Creating /run/nologin, blocking further logins...");
r = write_string_file_atomic_label("/run/nologin", "System is going down.");
if (r < 0)
log_error_errno(r, "Failed to create /run/nologin: %m");
else
m->unlink_nologin = true;
return 0;
}
static int update_schedule_file(Manager *m) {
_cleanup_free_ char *temp_path = NULL;
_cleanup_fclose_ FILE *f = NULL;
int r;
assert(m);
r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0);
if (r < 0)
return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
if (r < 0)
return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
(void) fchmod(fileno(f), 0644);
fprintf(f,
"USEC="USEC_FMT"\n"
"WARN_WALL=%i\n"
"MODE=%s\n",
m->scheduled_shutdown_timeout,
m->enable_wall_messages,
m->scheduled_shutdown_type);
if (!isempty(m->wall_message)) {
_cleanup_free_ char *t;
t = cescape(m->wall_message);
if (!t) {
r = -ENOMEM;
goto fail;
}
fprintf(f, "WALL_MESSAGE=%s\n", t);
}
r = fflush_and_check(f);
if (r < 0)
goto fail;
if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
r = -errno;
goto fail;
}
return 0;
fail:
(void) unlink(temp_path);
(void) unlink("/run/systemd/shutdown/scheduled");
return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
}
static int manager_scheduled_shutdown_handler(
sd_event_source *s,
uint64_t usec,
void *userdata) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
Manager *m = userdata;
const char *target;
int r;
assert(m);
if (isempty(m->scheduled_shutdown_type))
return 0;
if (streq(m->scheduled_shutdown_type, "halt"))
target = SPECIAL_HALT_TARGET;
else if (streq(m->scheduled_shutdown_type, "poweroff"))
target = SPECIAL_POWEROFF_TARGET;
else
target = SPECIAL_REBOOT_TARGET;
r = execute_shutdown_or_sleep(m, 0, target, &error);
if (r < 0)
return log_error_errno(r, "Unable to execute transition to %s: %m", target);
return 0;
}
static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
const char *action_multiple_sessions = NULL;
const char *action_ignore_inhibit = NULL;
const char *action = NULL;
uint64_t elapse;
char *type;
int r;
assert(m);
assert(message);
r = sd_bus_message_read(message, "st", &type, &elapse);
if (r < 0)
return r;
if (startswith(type, "dry-")) {
type += 4;
m->shutdown_dry_run = true;
}
if (streq(type, "reboot")) {
action = "org.freedesktop.login1.reboot";
action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
} else if (streq(type, "halt")) {
action = "org.freedesktop.login1.halt";
action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
} else if (streq(type, "poweroff")) {
action = "org.freedesktop.login1.power-off";
action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions";
action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit";
} else
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, false,
action, action_multiple_sessions, action_ignore_inhibit, error);
if (r != 0)
return r;
if (m->scheduled_shutdown_timeout_source) {
r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
if (r < 0)
return log_error_errno(r, "sd_event_source_set_time() failed: %m");
r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
if (r < 0)
return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
} else {
r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
if (r < 0)
return log_error_errno(r, "sd_event_add_time() failed: %m");
}
r = free_and_strdup(&m->scheduled_shutdown_type, type);
if (r < 0) {
m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
return log_oom();
}
if (m->nologin_timeout_source) {
r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
if (r < 0)
return log_error_errno(r, "sd_event_source_set_time() failed: %m");
r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
if (r < 0)
return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
} else {
r = sd_event_add_time(m->event, &m->nologin_timeout_source,
CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
if (r < 0)
return log_error_errno(r, "sd_event_add_time() failed: %m");
}
m->scheduled_shutdown_timeout = elapse;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
if (r >= 0) {
const char *tty = NULL;
(void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
(void) sd_bus_creds_get_tty(creds, &tty);
r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
if (r < 0) {
m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
return log_oom();
}
}
r = manager_setup_wall_message_timer(m);
if (r < 0)
return r;
if (!isempty(type)) {
r = update_schedule_file(m);
if (r < 0)
return r;
} else
(void) unlink("/run/systemd/shutdown/scheduled");
return sd_bus_reply_method_return(message, NULL);
}
static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
bool cancelled;
assert(m);
assert(message);
cancelled = m->scheduled_shutdown_type != NULL;
reset_scheduled_shutdown(m);
if (cancelled) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
const char *tty = NULL;
uid_t uid = 0;
int r;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
if (r >= 0) {
(void) sd_bus_creds_get_uid(creds, &uid);
(void) sd_bus_creds_get_tty(creds, &tty);
}
utmp_wall("The system shutdown has been cancelled",
uid_to_name(uid), tty, logind_wall_tty_filter, m);
}
return sd_bus_reply_method_return(message, "b", cancelled);
}
static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_do_shutdown_or_sleep(
m, message,
SPECIAL_HIBERNATE_TARGET,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
"hibernate",
error);
}
static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_do_shutdown_or_sleep(
m, message,
SPECIAL_HYBRID_SLEEP_TARGET,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
"hybrid-sleep",
error);
}
static int method_can_shutdown_or_sleep(
Manager *m,
sd_bus_message *message,
InhibitWhat w,
const char *action,
const char *action_multiple_sessions,
const char *action_ignore_inhibit,
const char *sleep_verb,
sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
bool multiple_sessions, challenge, blocked;
const char *result = NULL;
uid_t uid;
int r;
assert(m);
assert(message);
assert(w >= 0);
assert(w <= _INHIBIT_WHAT_MAX);
assert(action);
assert(action_multiple_sessions);
assert(action_ignore_inhibit);
if (sleep_verb) {
r = can_sleep(sleep_verb);
if (r < 0)
return r;
if (r == 0)
return sd_bus_reply_method_return(message, "s", "na");
}
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_euid(creds, &uid);
if (r < 0)
return r;
r = have_multiple_sessions(m, uid);
if (r < 0)
return r;
multiple_sessions = r > 0;
blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
if (multiple_sessions) {
r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
if (r < 0)
return r;
if (r > 0)
result = "yes";
else if (challenge)
result = "challenge";
else
result = "no";
}
if (blocked) {
r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
if (r < 0)
return r;
if (r > 0 && !result)
result = "yes";
else if (challenge && (!result || streq(result, "yes")))
result = "challenge";
else
result = "no";
}
if (!multiple_sessions && !blocked) {
/* If neither inhibit nor multiple sessions
* apply then just check the normal policy */
r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
if (r < 0)
return r;
if (r > 0)
result = "yes";
else if (challenge)
result = "challenge";
else
result = "no";
}
return sd_bus_reply_method_return(message, "s", result);
}
static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_can_shutdown_or_sleep(
m, message,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.power-off",
"org.freedesktop.login1.power-off-multiple-sessions",
"org.freedesktop.login1.power-off-ignore-inhibit",
NULL,
error);
}
static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_can_shutdown_or_sleep(
m, message,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.reboot",
"org.freedesktop.login1.reboot-multiple-sessions",
"org.freedesktop.login1.reboot-ignore-inhibit",
NULL,
error);
}
static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_can_shutdown_or_sleep(
m, message,
INHIBIT_SLEEP,
"org.freedesktop.login1.suspend",
"org.freedesktop.login1.suspend-multiple-sessions",
"org.freedesktop.login1.suspend-ignore-inhibit",
"suspend",
error);
}
static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_can_shutdown_or_sleep(
m, message,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
"hibernate",
error);
}
static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_can_shutdown_or_sleep(
m, message,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
"hybrid-sleep",
error);
}
static int property_get_reboot_to_firmware_setup(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
int r;
assert(bus);
assert(reply);
assert(userdata);
r = efi_get_reboot_to_firmware();
if (r < 0 && r != -EOPNOTSUPP)
return r;
return sd_bus_message_append(reply, "b", r > 0);
}
static int method_set_reboot_to_firmware_setup(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
int b, r;
Manager *m = userdata;
assert(message);
assert(m);
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
r = bus_verify_polkit_async(message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-to-firmware-setup",
NULL,
false,
UID_INVALID,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = efi_set_reboot_to_firmware(b);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_can_reboot_to_firmware_setup(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
int r;
bool challenge;
const char *result;
Manager *m = userdata;
assert(message);
assert(m);
r = efi_reboot_to_firmware_supported();
if (r == -EOPNOTSUPP)
return sd_bus_reply_method_return(message, "s", "na");
else if (r < 0)
return r;
r = bus_test_polkit(message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-to-firmware-setup",
NULL,
UID_INVALID,
&challenge,
error);
if (r < 0)
return r;
if (r > 0)
result = "yes";
else if (challenge)
result = "challenge";
else
result = "no";
return sd_bus_reply_method_return(message, "s", result);
}
static int method_set_wall_message(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
int r;
Manager *m = userdata;
char *wall_message;
int enable_wall_messages;
assert(message);
assert(m);
r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
if (r < 0)
return r;
r = bus_verify_polkit_async(message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-wall-message",
NULL,
false,
UID_INVALID,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
if (isempty(wall_message))
m->wall_message = mfree(m->wall_message);
else {
r = free_and_strdup(&m->wall_message, wall_message);
if (r < 0)
return log_oom();
}
m->enable_wall_messages = enable_wall_messages;
return sd_bus_reply_method_return(message, NULL);
}
static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
const char *who, *why, *what, *mode;
_cleanup_free_ char *id = NULL;
_cleanup_close_ int fifo_fd = -1;
Manager *m = userdata;
Inhibitor *i = NULL;
InhibitMode mm;
InhibitWhat w;
pid_t pid;
uid_t uid;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
if (r < 0)
return r;
w = inhibit_what_from_string(what);
if (w <= 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid what specification %s", what);
mm = inhibit_mode_from_string(mode);
if (mm < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid mode specification %s", mode);
/* Delay is only supported for shutdown/sleep */
if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delay inhibitors only supported for shutdown and sleep");
/* Don't allow taking delay locks while we are already
* executing the operation. We shouldn't create the impression
* that the lock was successful if the machine is about to go
* down/suspend any moment. */
if (m->action_what & w)
return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "The operation inhibition has been requested for is already running");
r = bus_verify_polkit_async(
message,
CAP_SYS_BOOT,
w == INHIBIT_SHUTDOWN ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
w == INHIBIT_SLEEP ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep" : "org.freedesktop.login1.inhibit-delay-sleep") :
w == INHIBIT_IDLE ? "org.freedesktop.login1.inhibit-block-idle" :
w == INHIBIT_HANDLE_POWER_KEY ? "org.freedesktop.login1.inhibit-handle-power-key" :
w == INHIBIT_HANDLE_SUSPEND_KEY ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
"org.freedesktop.login1.inhibit-handle-lid-switch",
NULL,
false,
UID_INVALID,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_euid(creds, &uid);
if (r < 0)
return r;
r = sd_bus_creds_get_pid(creds, &pid);
if (r < 0)
return r;
if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.", m->inhibitors_max);
do {
id = mfree(id);
if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
return -ENOMEM;
} while (hashmap_get(m->inhibitors, id));
r = manager_add_inhibitor(m, id, &i);
if (r < 0)
return r;
i->what = w;
i->mode = mm;
i->pid = pid;
i->uid = uid;
i->why = strdup(why);
i->who = strdup(who);
if (!i->why || !i->who) {
r = -ENOMEM;
goto fail;
}
fifo_fd = inhibitor_create_fifo(i);
if (fifo_fd < 0) {
r = fifo_fd;
goto fail;
}
inhibitor_start(i);
return sd_bus_reply_method_return(message, "h", fifo_fd);
fail:
if (i)
inhibitor_free(i);
return r;
}
const sd_bus_vtable manager_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RuntimeDirectorySize", "t", bus_property_get_size, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_current_inhibitors, 0, 0),
SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_current_sessions, 0, 0),
SD_BUS_PROPERTY("UserTasksMax", "t", NULL, offsetof(Manager, user_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_METHOD("GetSession", "s", "o", method_get_session, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetUser", "u", "o", method_get_user, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetUserByPID", "u", "o", method_get_user_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetSeat", "s", "o", method_get_seat, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListSessions", NULL, "a(susso)", method_list_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListUsers", NULL, "a(uso)", method_list_users, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListSeats", NULL, "a(so)", method_list_seats, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListInhibitors", NULL, "a(ssssuu)", method_list_inhibitors, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CreateSession", "uusssssussbssa(sv)", "soshusub", method_create_session, 0),
SD_BUS_METHOD("ReleaseSession", "s", NULL, method_release_session, 0),
SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ActivateSessionOnSeat", "ss", NULL, method_activate_session_on_seat, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("LockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetUserLinger", "ubb", NULL, method_set_user_linger, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("AttachDevice", "ssb", NULL, method_attach_device, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("FlushDevices", "b", NULL, method_flush_devices, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("PowerOff", "b", NULL, method_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Reboot", "b", NULL, method_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ScheduleShutdown", "st", NULL, method_schedule_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CancelScheduledShutdown", NULL, "b", method_cancel_scheduled_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CanRebootToFirmwareSetup", NULL, "s", method_can_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetRebootToFirmwareSetup", "b", NULL, method_set_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetWallMessage", "sb", NULL, method_set_wall_message, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL("SessionNew", "so", 0),
SD_BUS_SIGNAL("SessionRemoved", "so", 0),
SD_BUS_SIGNAL("UserNew", "uo", 0),
SD_BUS_SIGNAL("UserRemoved", "uo", 0),
SD_BUS_SIGNAL("SeatNew", "so", 0),
SD_BUS_SIGNAL("SeatRemoved", "so", 0),
SD_BUS_SIGNAL("PrepareForShutdown", "b", 0),
SD_BUS_SIGNAL("PrepareForSleep", "b", 0),
SD_BUS_VTABLE_END
};
static int session_jobs_reply(Session *s, const char *unit, const char *result) {
int r = 0;
assert(s);
assert(unit);
if (!s->started)
return r;
if (streq(result, "done"))
r = session_send_create_reply(s, NULL);
else {
_cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
r = session_send_create_reply(s, &e);
}
return r;
}
int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *path, *result, *unit;
Manager *m = userdata;
Session *session;
uint32_t id;
User *user;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
if (r < 0) {
bus_log_parse_error(r);
return 0;
}
if (m->action_job && streq(m->action_job, path)) {
log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
/* Tell people that they now may take a lock again */
send_prepare_for(m, m->action_what, false);
m->action_job = mfree(m->action_job);
m->action_unit = NULL;
m->action_what = 0;
return 0;
}
session = hashmap_get(m->session_units, unit);
if (session && streq_ptr(path, session->scope_job)) {
session->scope_job = mfree(session->scope_job);
session_jobs_reply(session, unit, result);
session_save(session);
user_save(session->user);
session_add_to_gc_queue(session);
}
user = hashmap_get(m->user_units, unit);
if (user &&
(streq_ptr(path, user->service_job) ||
streq_ptr(path, user->slice_job))) {
if (streq_ptr(path, user->service_job))
user->service_job = mfree(user->service_job);
if (streq_ptr(path, user->slice_job))
user->slice_job = mfree(user->slice_job);
LIST_FOREACH(sessions_by_user, session, user->sessions)
session_jobs_reply(session, unit, result);
user_save(user);
user_add_to_gc_queue(user);
}
return 0;
}
int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
const char *path, *unit;
Manager *m = userdata;
Session *session;
User *user;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "so", &unit, &path);
if (r < 0) {
bus_log_parse_error(r);
return 0;
}
session = hashmap_get(m->session_units, unit);
if (session)
session_add_to_gc_queue(session);
user = hashmap_get(m->user_units, unit);
if (user)
user_add_to_gc_queue(user);
return 0;
}
int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
_cleanup_free_ char *unit = NULL;
Manager *m = userdata;
const char *path;
Session *session;
User *user;
int r;
assert(message);
assert(m);
path = sd_bus_message_get_path(message);
if (!path)
return 0;
r = unit_name_from_dbus_path(path, &unit);
if (r == -EINVAL) /* not a unit */
return 0;
if (r < 0) {
log_oom();
return 0;
}
session = hashmap_get(m->session_units, unit);
if (session)
session_add_to_gc_queue(session);
user = hashmap_get(m->user_units, unit);
if (user)
user_add_to_gc_queue(user);
return 0;
}
int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Session *session;
Iterator i;
int b, r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "b", &b);
if (r < 0) {
bus_log_parse_error(r);
return 0;
}
if (b)
return 0;
/* systemd finished reloading, let's recheck all our sessions */
log_debug("System manager has been reloaded, rechecking sessions...");
HASHMAP_FOREACH(session, m->sessions, i)
session_add_to_gc_queue(session);
return 0;
}
int manager_send_changed(Manager *manager, const char *property, ...) {
char **l;
assert(manager);
l = strv_from_stdarg_alloca(property);
return sd_bus_emit_properties_changed_strv(
manager->bus,
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
l);
}
static int strdup_job(sd_bus_message *reply, char **job) {
const char *j;
char *copy;
int r;
r = sd_bus_message_read(reply, "o", &j);
if (r < 0)
return r;
copy = strdup(j);
if (!copy)
return -ENOMEM;
*job = copy;
return 1;
}
int manager_start_slice(
Manager *manager,
const char *slice,
const char *description,
const char *after,
const char *after2,
uint64_t tasks_max,
sd_bus_error *error,
char **job) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
int r;
assert(manager);
assert(slice);
assert(job);
r = sd_bus_message_new_method_call(
manager->bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartTransientUnit");
if (r < 0)
return r;
r = sd_bus_message_append(m, "ss", strempty(slice), "fail");
if (r < 0)
return r;
r = sd_bus_message_open_container(m, 'a', "(sv)");
if (r < 0)
return r;
if (!isempty(description)) {
r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
if (r < 0)
return r;
}
if (!isempty(after)) {
r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
if (r < 0)
return r;
}
if (!isempty(after2)) {
r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
if (r < 0)
return r;
}
r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
if (r < 0)
return r;
r = sd_bus_message_close_container(m);
if (r < 0)
return r;
r = sd_bus_message_append(m, "a(sa(sv))", 0);
if (r < 0)
return r;
r = sd_bus_call(manager->bus, m, 0, error, &reply);
if (r < 0)
return r;
return strdup_job(reply, job);
}
int manager_start_scope(
Manager *manager,
const char *scope,
pid_t pid,
const char *slice,
const char *description,
const char *after,
const char *after2,
uint64_t tasks_max,
sd_bus_error *error,
char **job) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
int r;
assert(manager);
assert(scope);
assert(pid > 1);
assert(job);
r = sd_bus_message_new_method_call(
manager->bus,
&m,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartTransientUnit");
if (r < 0)
return r;
r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
if (r < 0)
return r;
r = sd_bus_message_open_container(m, 'a', "(sv)");
if (r < 0)
return r;
if (!isempty(slice)) {
r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
if (r < 0)
return r;
}
if (!isempty(description)) {
r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
if (r < 0)
return r;
}
if (!isempty(after)) {
r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
if (r < 0)
return r;
}
if (!isempty(after2)) {
r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
if (r < 0)
return r;
}
/* cgroup empty notification is not available in containers
* currently. To make this less problematic, let's shorten the
* stop timeout for sessions, so that we don't wait
* forever. */
/* Make sure that the session shells are terminated with
* SIGHUP since bash and friends tend to ignore SIGTERM */
r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
if (r < 0)
return r;
r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
if (r < 0)
return r;
r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
if (r < 0)
return r;
r = sd_bus_message_close_container(m);
if (r < 0)
return r;
r = sd_bus_message_append(m, "a(sa(sv))", 0);
if (r < 0)
return r;
r = sd_bus_call(manager->bus, m, 0, error, &reply);
if (r < 0)
return r;
return strdup_job(reply, job);
}
int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
int r;
assert(manager);
assert(unit);
assert(job);
r = sd_bus_call_method(
manager->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartUnit",
error,
&reply,
"ss", unit, "replace");
if (r < 0)
return r;
return strdup_job(reply, job);
}
int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
int r;
assert(manager);
assert(unit);
assert(job);
r = sd_bus_call_method(
manager->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StopUnit",
error,
&reply,
"ss", unit, "fail");
if (r < 0) {
if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
*job = NULL;
sd_bus_error_free(error);
return 0;
}
return r;
}
return strdup_job(reply, job);
}
int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *error) {
_cleanup_free_ char *path = NULL;
int r;
assert(manager);
assert(scope);
path = unit_dbus_path_from_name(scope);
if (!path)
return -ENOMEM;
r = sd_bus_call_method(
manager->bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Scope",
"Abandon",
error,
NULL,
NULL);
if (r < 0) {
if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED) ||
sd_bus_error_has_name(error, BUS_ERROR_SCOPE_NOT_RUNNING)) {
sd_bus_error_free(error);
return 0;
}
return r;
}
return 1;
}
int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
assert(manager);
assert(unit);
return sd_bus_call_method(
manager->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"KillUnit",
error,
NULL,
"ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
}
int manager_unit_is_active(Manager *manager, const char *unit) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
_cleanup_free_ char *path = NULL;
const char *state;
int r;
assert(manager);
assert(unit);
path = unit_dbus_path_from_name(unit);
if (!path)
return -ENOMEM;
r = sd_bus_get_property(
manager->bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Unit",
"ActiveState",
&error,
&reply,
"s");
if (r < 0) {
/* systemd might have droppped off momentarily, let's
* not make this an error */
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
return true;
/* If the unit is already unloaded then it's not
* active */
if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
return false;
return r;
}
r = sd_bus_message_read(reply, "s", &state);
if (r < 0)
return -EINVAL;
return !streq(state, "inactive") && !streq(state, "failed");
}
int manager_job_is_active(Manager *manager, const char *path) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
int r;
assert(manager);
assert(path);
r = sd_bus_get_property(
manager->bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Job",
"State",
&error,
&reply,
"s");
if (r < 0) {
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
return true;
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
return false;
return r;
}
/* We don't actually care about the state really. The fact
* that we could read the job state is enough for us */
return true;
}
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