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third-party-mirror / systemd / 2398d87694e8af48e92ff8fb5f9cf273f706fb00 / . / src / login / logind-dbus.c
blob: b3c204f0b0a3fd63f51c3ca0470ac3c63352f8d2 [file] [log] [blame]
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include <sys/stat.h>
#include <unistd.h>
#include "sd-device.h"
#include "sd-messages.h"
#include "alloc-util.h"
#include "audit-util.h"
#include "bootspec.h"
#include "bus-common-errors.h"
#include "bus-error.h"
#include "bus-get-properties.h"
#include "bus-locator.h"
#include "bus-polkit.h"
#include "bus-unit-util.h"
#include "bus-util.h"
#include "cgroup-util.h"
#include "device-util.h"
#include "dirent-util.h"
#include "efi-loader.h"
#include "efivars.h"
#include "env-util.h"
#include "escape.h"
#include "fd-util.h"
#include "fileio-label.h"
#include "fileio.h"
#include "format-util.h"
#include "fs-util.h"
#include "logind-dbus.h"
#include "logind-polkit.h"
#include "logind-seat-dbus.h"
#include "logind-session-dbus.h"
#include "logind-user-dbus.h"
#include "logind.h"
#include "missing_capability.h"
#include "mkdir.h"
#include "parse-util.h"
#include "path-util.h"
#include "process-util.h"
#include "reboot-util.h"
#include "selinux-util.h"
#include "sleep-config.h"
#include "special.h"
#include "stdio-util.h"
#include "strv.h"
#include "terminal-util.h"
#include "tmpfile-util.h"
#include "unit-name.h"
#include "user-util.h"
#include "utmp-wtmp.h"
#include "virt.h"
static int get_sender_session(
Manager *m,
sd_bus_message *message,
bool consult_display,
sd_bus_error *error,
Session **ret) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
Session *session = NULL;
const char *name;
int r;
/* Acquire the sender's session. This first checks if the sending process is inside a session itself,
* and returns that. If not and 'consult_display' is true, this returns the display session of the
* owning user of the caller. */
r = sd_bus_query_sender_creds(message,
SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
(consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
if (r < 0)
return r;
r = sd_bus_creds_get_session(creds, &name);
if (r < 0) {
if (r != -ENXIO)
return r;
if (consult_display) {
uid_t uid;
r = sd_bus_creds_get_owner_uid(creds, &uid);
if (r < 0) {
if (r != -ENXIO)
return r;
} else {
User *user;
user = hashmap_get(m->users, UID_TO_PTR(uid));
if (user)
session = user->display;
}
}
} else
session = hashmap_get(m->sessions, name);
if (!session)
return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
consult_display ?
"Caller does not belong to any known session and doesn't own any suitable session." :
"Caller does not belong to any known session.");
*ret = session;
return 0;
}
int manager_get_session_from_creds(
Manager *m,
sd_bus_message *message,
const char *name,
sd_bus_error *error,
Session **ret) {
Session *session;
assert(m);
assert(ret);
if (SEAT_IS_SELF(name)) /* the caller's own session */
return get_sender_session(m, message, false, error, ret);
if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
return get_sender_session(m, message, true, error, ret);
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;
}
static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
uid_t uid;
User *user;
int r;
/* 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) {
if (r != -ENXIO)
return r;
user = NULL;
} else
user = hashmap_get(m->users, UID_TO_PTR(uid));
if (!user)
return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
"Caller does not belong to any logged in or lingering user");
*ret = user;
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;
assert(m);
assert(ret);
if (!uid_is_valid(uid))
return get_sender_user(m, message, error, ret);
user = hashmap_get(m->users, UID_TO_PTR(uid));
if (!user)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
"User ID "UID_FMT" is not logged in or lingering", 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(ret);
if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
Session *session;
/* Use these special seat names as session names */
r = manager_get_session_from_creds(m, message, name, error, &session);
if (r < 0)
return r;
seat = session->seat;
if (!seat)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
} 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 return_test_polkit(
sd_bus_message *message,
int capability,
const char *action,
const char **details,
uid_t good_user,
sd_bus_error *e) {
const char *result;
bool challenge;
int r;
r = bus_test_polkit(message, capability, action, details, good_user, &challenge, e);
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 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 BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power);
static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
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);
}
/* Get login session of a process. This is not what you are looking for these days,
* as apps may instead belong to a user service unit. This includes terminal
* emulators and hence command-line apps. */
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 logged in user or lingering 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;
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) {
_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->user_record->uid,
session->user->user_record->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;
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) {
_cleanup_free_ char *p = NULL;
p = user_bus_path(user);
if (!p)
return -ENOMEM;
r = sd_bus_message_append(reply, "(uso)",
(uint32_t) user->user_record->uid,
user->user_record->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;
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) {
_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;
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) {
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;
_cleanup_free_ char *id = NULL;
Session *session = NULL;
uint32_t audit_id = 0;
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_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
if (leader < 0 || leader == 1 || leader == getpid_cached())
return sd_bus_error_set(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 == 0)
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 <= 0 || 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");
}
}
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;
}
/* Check if we are already in a logind session. Or if we are in user@.service
* which is a special PAM session that avoids creating a logind session. */
r = manager_get_user_by_pid(m, leader, NULL);
if (r < 0)
return r;
if (r > 0)
return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
"Already running in a session or user slice");
/*
* 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 < MALLOC_ELEMENTSOF(m->seat0->positions) &&
m->seat0->positions[vtnr] &&
m->seat0->positions[vtnr]->class != SESSION_GREETER)
return sd_bus_error_set(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);
(void) audit_session_from_pid(leader, &audit_id);
if (audit_session_is_valid(audit_id)) {
/* 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_contains(m->sessions, id)) {
log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
audit_id = AUDIT_SESSION_INVALID;
id = mfree(id);
}
}
if (!id) {
do {
id = mfree(id);
if (asprintf(&id, "c%lu", ++m->session_counter) < 0)
return -ENOMEM;
} while (hashmap_contains(m->sessions, id));
}
/* The generated names should not clash with 'auto' or 'self' */
assert(!SESSION_IS_SELF(id));
assert(!SESSION_IS_AUTO(id));
/* If we are not watching utmp already, try again */
manager_reconnect_utmp(m);
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);
r = session_set_leader(session, leader);
if (r < 0)
goto fail;
session->original_type = 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;
}
session->tty_validity = TTY_FROM_PAM;
}
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 = sd_bus_message_enter_container(message, 'a', "(sv)");
if (r < 0)
goto fail;
r = session_start(session, message, error);
if (r < 0)
goto fail;
r = sd_bus_message_exit_container(message);
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;
/* PolicyKit is done by bus_session_method_activate() */
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 = check_polkit_chvt(message, m, error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
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_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
_cleanup_free_ char *cc = NULL;
Manager *m = userdata;
int r, b, interactive;
struct passwd *pw;
const char *path;
uint32_t uid, auth_uid;
assert(message);
assert(m);
r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
if (r < 0)
return r;
r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
if (r < 0)
return r;
if (!uid_is_valid(uid)) {
/* Note that we get the owner UID of the session or user unit,
* not the actual client UID here! */
r = sd_bus_creds_get_owner_uid(creds, &uid);
if (r < 0)
return r;
}
/* owner_uid is racy, so for authorization we must use euid */
r = sd_bus_creds_get_euid(creds, &auth_uid);
if (r < 0)
return r;
errno = 0;
pw = getpwuid(uid);
if (!pw)
return errno_or_else(ENOENT);
r = bus_verify_polkit_async(
message,
CAP_SYS_ADMIN,
uid == auth_uid ? "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 */
(void) mkdir_p_label("/var/lib/systemd", 0755);
r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
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, sd_device *d) {
_cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
int r;
assert(m);
r = sd_device_enumerator_new(&e);
if (r < 0)
return r;
r = sd_device_enumerator_allow_uninitialized(e);
if (r < 0)
return r;
if (d) {
r = sd_device_enumerator_add_match_parent(e, d);
if (r < 0)
return r;
}
FOREACH_DEVICE(e, d) {
r = sd_device_trigger(d, SD_DEVICE_CHANGE);
if (r < 0)
log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
}
return 0;
}
static int attach_device(Manager *m, const char *seat, const char *sysfs) {
_cleanup_(sd_device_unrefp) sd_device *d = NULL;
_cleanup_free_ char *rule = NULL, *file = NULL;
const char *id_for_seat;
int r;
assert(m);
assert(seat);
assert(sysfs);
r = sd_device_new_from_syspath(&d, sysfs);
if (r < 0)
return r;
if (sd_device_has_current_tag(d, "seat") <= 0)
return -ENODEV;
if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
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;
(void) 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 = NULL;
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_is_normalized(sysfs))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
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_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
Seat *found;
r = manager_get_seat_from_creds(m, message, seat, error, &found);
if (r < 0)
return r;
seat = found->id;
} else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %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;
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)
if (session->class == SESSION_USER &&
session->user->user_record->uid != uid)
return true;
return false;
}
static int bus_manager_log_shutdown(
Manager *m,
const char *unit_name) {
const char *p, *q;
assert(m);
assert(unit_name);
if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
p = "MESSAGE=System is powering down";
q = "SHUTDOWN=power-off";
} else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
p = "MESSAGE=System is rebooting";
q = "SHUTDOWN=reboot";
} else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
p = "MESSAGE=System is halting";
q = "SHUTDOWN=halt";
} 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,
"MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_STR,
p,
q);
}
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 int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
int active = _active;
assert(m);
assert(IN_SET(w, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
return sd_bus_emit_signal(m->bus,
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
w == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
"b",
active);
}
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;
const char *p;
int r;
assert(m);
assert(w > 0);
assert(w < _INHIBIT_WHAT_MAX);
assert(unit_name);
if (w == INHIBIT_SHUTDOWN)
bus_manager_log_shutdown(m, unit_name);
r = bus_call_method(
m->bus,
bus_systemd_mgr,
"StartUnit",
error,
&reply,
"ss", unit_name, "replace-irreversibly");
if (r < 0)
goto error;
r = sd_bus_message_read(reply, "o", &p);
if (r < 0)
goto error;
r = free_and_strdup(&m->action_job, p);
if (r < 0)
goto error;
m->action_unit = unit_name;
m->action_what = w;
/* Make sure the lid switch is ignored for a while */
manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
return 0;
error:
/* Tell people that they now may take a lock again */
(void) send_prepare_for(m, w, false);
return r;
}
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("Error during inhibitor-delayed operation (already returned success to client): %s",
bus_error_message(&error, r));
manager->action_unit = NULL;
manager->action_what = 0;
}
return 1; /* We did some work. */
}
static int manager_inhibit_timeout_handler(
sd_event_source *s,
uint64_t usec,
void *userdata) {
Manager *manager = userdata;
assert(manager);
assert(manager->inhibit_timeout_source == s);
return manager_dispatch_delayed(manager, true);
}
static int delay_shutdown_or_sleep(
Manager *m,
InhibitWhat w,
const char *unit_name) {
int r;
assert(m);
assert(w >= 0);
assert(w < _INHIBIT_WHAT_MAX);
assert(unit_name);
if (m->inhibit_timeout_source) {
r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
if (r < 0)
return log_error_errno(r, "sd_event_source_set_time_relative() 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_relative(
m->event,
&m->inhibit_timeout_source,
CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
manager_inhibit_timeout_handler, m);
if (r < 0)
return r;
}
m->action_unit = unit_name;
m->action_what = w;
return 0;
}
int bus_manager_shutdown_or_sleep_now_or_later(
Manager *m,
const char *unit_name,
InhibitWhat w,
sd_bus_error *error) {
_cleanup_free_ char *load_state = NULL;
bool delayed;
int r;
assert(m);
assert(unit_name);
assert(w > 0);
assert(w < _INHIBIT_WHAT_MAX);
assert(!m->action_job);
r = unit_load_state(m->bus, unit_name, &load_state);
if (r < 0)
return r;
if (!streq(load_state, "loaded"))
return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
"Unit %s is %s, refusing operation.",
unit_name, load_state);
/* Tell everybody to prepare for shutdown/sleep */
(void) 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,
const char *action,
const char *action_multiple_sessions,
const char *action_ignore_inhibit,
uint64_t flags,
sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
bool multiple_sessions, blocked, interactive;
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);
interactive = flags & SD_LOGIND_INTERACTIVE;
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) {
/* We don't check polkit for root here, because you can't be more privileged than root */
if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
"Access denied to root due to active block inhibitor");
if (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,
SleepOperation sleep_operation,
bool with_flags,
sd_bus_error *error) {
uint64_t flags;
int r;
assert(m);
assert(message);
assert(unit_name);
assert(w >= 0);
assert(w <= _INHIBIT_WHAT_MAX);
if (with_flags) {
/* New style method: with flags parameter (and interactive bool in the bus message header) */
r = sd_bus_message_read(message, "t", &flags);
if (r < 0)
return r;
if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid flags parameter");
if (!streq(unit_name, SPECIAL_REBOOT_TARGET) && (flags & SD_LOGIND_REBOOT_VIA_KEXEC))
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Reboot via kexec is only applicable with reboot operations");
} else {
/* Old style method: no flags parameter, but interactive bool passed as boolean in
* payload. Let's convert this argument to the new-style flags parameter for our internal
* use. */
int interactive;
r = sd_bus_message_read(message, "b", &interactive);
if (r < 0)
return r;
flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
}
if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
unit_name = SPECIAL_KEXEC_TARGET;
/* Don't allow multiple jobs being executed at the same time */
if (m->action_what > 0)
return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
"There's already a shutdown or sleep operation in progress");
if (sleep_operation >= 0) {
r = can_sleep(sleep_operation);
if (r == -ENOSPC)
return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
"Not enough swap space for hibernation");
if (r == 0)
return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
"Sleep verb \"%s\" not supported", sleep_operation_to_string(sleep_operation));
if (r < 0)
return r;
}
r = verify_shutdown_creds(m, message, w, action, action_multiple_sessions,
action_ignore_inhibit, flags, 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",
_SLEEP_OPERATION_INVALID,
sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
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",
_SLEEP_OPERATION_INVALID,
sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
error);
}
static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_do_shutdown_or_sleep(
m, message,
SPECIAL_HALT_TARGET,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.halt",
"org.freedesktop.login1.halt-multiple-sessions",
"org.freedesktop.login1.halt-ignore-inhibit",
_SLEEP_OPERATION_INVALID,
sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
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",
SLEEP_SUSPEND,
sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
error);
}
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",
SLEEP_HIBERNATE,
sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
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",
SLEEP_HYBRID_SLEEP,
sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
error);
}
static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
return method_do_shutdown_or_sleep(
m, message,
SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
SLEEP_SUSPEND_THEN_HIBERNATE,
sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
error);
}
static int nologin_timeout_handler(
sd_event_source *s,
uint64_t usec,
void *userdata) {
Manager *m = userdata;
log_info("Creating /run/nologin, blocking further logins...");
m->unlink_nologin =
create_shutdown_run_nologin_or_warn() >= 0;
return 0;
}
static usec_t nologin_timeout_usec(usec_t elapse) {
/* Issue /run/nologin five minutes before shutdown */
return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
}
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, MKDIR_WARN_MODE);
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 = NULL;
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 void reset_scheduled_shutdown(Manager *m) {
assert(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_or_warn("/run/nologin");
m->unlink_nologin = false;
}
(void) unlink("/run/systemd/shutdown/scheduled");
}
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, "poweroff"))
target = SPECIAL_POWEROFF_TARGET;
else if (streq(m->scheduled_shutdown_type, "reboot"))
target = SPECIAL_REBOOT_TARGET;
else if (streq(m->scheduled_shutdown_type, "kexec"))
target = SPECIAL_KEXEC_TARGET;
else if (streq(m->scheduled_shutdown_type, "halt"))
target = SPECIAL_HALT_TARGET;
else
assert_not_reached("unexpected shutdown type");
/* Don't allow multiple jobs being executed at the same time */
if (m->action_what > 0) {
r = -EALREADY;
log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", target);
goto error;
}
if (m->shutdown_dry_run) {
/* We do not process delay inhibitors here. Otherwise, we
* would have to be considered "in progress" (like the check
* above) for some seconds after our admin has seen the final
* wall message. */
bus_manager_log_shutdown(m, target);
log_info("Running in dry run, suppressing action.");
reset_scheduled_shutdown(m);
return 0;
}
r = bus_manager_shutdown_or_sleep_now_or_later(m, target, INHIBIT_SHUTDOWN, &error);
if (r < 0) {
log_error_errno(r, "Scheduled shutdown to %s failed: %m", target);
goto error;
}
return 0;
error:
reset_scheduled_shutdown(m);
return r;
}
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;
bool dry_run = false;
assert(m);
assert(message);
r = sd_bus_message_read(message, "st", &type, &elapse);
if (r < 0)
return r;
if (startswith(type, "dry-")) {
type += 4;
dry_run = true;
}
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 if (STR_IN_SET(type, "reboot", "kexec")) {
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
return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, action, action_multiple_sessions,
action_ignore_inhibit, 0, 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();
}
m->shutdown_dry_run = dry_run;
if (m->nologin_timeout_source) {
r = sd_event_source_set_time(m->nologin_timeout_source, nologin_timeout_usec(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, nologin_timeout_usec(elapse), 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;
r = update_schedule_file(m);
if (r < 0)
return r;
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 && m->enable_wall_messages) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
_cleanup_free_ char *username = 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);
}
username = uid_to_name(uid);
utmp_wall("The system shutdown has been cancelled",
username, tty, logind_wall_tty_filter, m);
}
return sd_bus_reply_method_return(message, "b", cancelled);
}
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,
SleepOperation sleep_operation,
sd_bus_error *error) {
_cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
HandleAction handle;
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_operation >= 0) {
r = can_sleep(sleep_operation);
if (IN_SET(r, 0, -ENOSPC))
return sd_bus_reply_method_return(message, "s", "na");
if (r < 0)
return r;
}
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);
handle = handle_action_from_string(sleep_operation_to_string(sleep_operation));
if (handle >= 0) {
const char *target;
target = manager_target_for_action(handle);
if (target) {
_cleanup_free_ char *load_state = NULL;
r = unit_load_state(m->bus, target, &load_state);
if (r < 0)
return r;
if (!streq(load_state, "loaded")) {
result = "no";
goto finish;
}
}
}
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) {
if (!result)
result = "yes";
} else if (challenge) {
if (!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";
}
finish:
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",
_SLEEP_OPERATION_INVALID,
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",
_SLEEP_OPERATION_INVALID,
error);
}
static int method_can_halt(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.halt",
"org.freedesktop.login1.halt-multiple-sessions",
"org.freedesktop.login1.halt-ignore-inhibit",
_SLEEP_OPERATION_INVALID,
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",
SLEEP_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",
SLEEP_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",
SLEEP_HYBRID_SLEEP,
error);
}
static int method_can_suspend_then_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",
SLEEP_SUSPEND_THEN_HIBERNATE,
error);
}
static int property_get_reboot_parameter(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
_cleanup_free_ char *parameter = NULL;
int r;
assert(bus);
assert(reply);
assert(userdata);
r = read_reboot_parameter(&parameter);
if (r < 0)
return r;
return sd_bus_message_append(reply, "s", parameter);
}
static int method_set_reboot_parameter(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
const char *arg;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &arg);
if (r < 0)
return r;
r = detect_container();
if (r < 0)
return r;
if (r > 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
"Reboot parameter not supported in containers, refusing.");
r = bus_verify_polkit_async(message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-parameter",
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 = update_reboot_parameter_and_warn(arg, false);
if (r < 0)
return r;
return sd_bus_reply_method_return(message, NULL);
}
static int method_can_reboot_parameter(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
_unused_ Manager *m = userdata;
int r;
assert(message);
assert(m);
r = detect_container();
if (r < 0)
return r;
if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
return sd_bus_reply_method_return(message, "s", "na");
return return_test_polkit(
message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-parameter",
NULL,
UID_INVALID,
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 = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
if (r == -ENXIO) {
/* EFI case: let's see what is currently configured in the EFI variables */
r = efi_get_reboot_to_firmware();
if (r < 0 && r != -EOPNOTSUPP)
log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
} else if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
else if (r > 0) {
/* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
if (errno != ENOENT)
log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
r = false;
} else
r = true;
}
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) {
Manager *m = userdata;
bool use_efi;
int b, r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "b", &b);
if (r < 0)
return r;
r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
if (r == -ENXIO) {
/* EFI case: let's see what the firmware supports */
r = efi_reboot_to_firmware_supported();
if (r == -EOPNOTSUPP)
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
if (r < 0)
return r;
use_efi = true;
} else if (r <= 0) {
/* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
} else
/* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
use_efi = false;
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 */
if (use_efi) {
r = efi_set_reboot_to_firmware(b);
if (r < 0)
return r;
} else {
if (b) {
r = touch("/run/systemd/reboot-to-firmware-setup");
if (r < 0)
return r;
} else {
if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
return -errno;
}
}
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) {
_unused_ Manager *m = userdata;
int r;
assert(message);
assert(m);
r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
if (r == -ENXIO) {
/* EFI case: let's see what the firmware supports */
r = efi_reboot_to_firmware_supported();
if (r < 0) {
if (r != -EOPNOTSUPP)
log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
return sd_bus_reply_method_return(message, "s", "na");
}
} else if (r <= 0) {
/* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
return sd_bus_reply_method_return(message, "s", "na");
}
return return_test_polkit(
message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-to-firmware-setup",
NULL,
UID_INVALID,
error);
}
static int property_get_reboot_to_boot_loader_menu(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
uint64_t x = UINT64_MAX;
int r;
assert(bus);
assert(reply);
assert(userdata);
r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
if (r == -ENXIO) {
/* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distuingished:
*
* 1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
* 2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
* 3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
*/
r = efi_loader_get_config_timeout_one_shot(&x);
if (r < 0) {
if (r != -ENOENT)
log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
}
} else if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
else if (r > 0) {
_cleanup_free_ char *v = NULL;
/* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
if (r < 0) {
if (r != -ENOENT)
log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
} else {
r = safe_atou64(v, &x);
if (r < 0)
log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
}
}
return sd_bus_message_append(reply, "t", x);
}
static int method_set_reboot_to_boot_loader_menu(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
bool use_efi;
uint64_t x;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "t", &x);
if (r < 0)
return r;
r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
if (r == -ENXIO) {
uint64_t features;
/* EFI case: let's see if booting into boot loader menu is supported. */
r = efi_loader_get_features(&features);
if (r < 0)
log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
use_efi = true;
} else if (r <= 0) {
/* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
} else
/* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
use_efi = false;
r = bus_verify_polkit_async(message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-to-boot-loader-menu",
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 */
if (use_efi) {
if (x == UINT64_MAX)
r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
else {
char buf[DECIMAL_STR_MAX(uint64_t) + 1];
xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
}
if (r < 0)
return r;
} else {
if (x == UINT64_MAX) {
if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
return -errno;
} else {
char buf[DECIMAL_STR_MAX(uint64_t) + 1];
xsprintf(buf, "%" PRIu64, x); /* µs granularity */
r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
if (r < 0)
return r;
}
}
return sd_bus_reply_method_return(message, NULL);
}
static int method_can_reboot_to_boot_loader_menu(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
_unused_ Manager *m = userdata;
int r;
assert(message);
assert(m);
r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
if (r == -ENXIO) {
uint64_t features = 0;
/* EFI case, let's see if booting into boot loader menu is supported. */
r = efi_loader_get_features(&features);
if (r < 0)
log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
return sd_bus_reply_method_return(message, "s", "na");
} else if (r <= 0) {
/* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
return sd_bus_reply_method_return(message, "s", "na");
}
return return_test_polkit(
message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-to-boot-loader-menu",
NULL,
UID_INVALID,
error);
}
static int property_get_reboot_to_boot_loader_entry(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
_cleanup_free_ char *v = NULL;
Manager *m = userdata;
const char *x = NULL;
int r;
assert(bus);
assert(reply);
assert(m);
r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
if (r == -ENXIO) {
/* EFI case: let's read the LoaderEntryOneShot variable */
r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
if (r < 0) {
if (r != -ENOENT)
log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
} else
x = m->efi_loader_entry_one_shot;
} else if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
else if (r > 0) {
/* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
if (r < 0) {
if (r != -ENOENT)
log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
} else if (!efi_loader_entry_name_valid(v))
log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
else
x = v;
}
return sd_bus_message_append(reply, "s", x);
}
static int boot_loader_entry_exists(Manager *m, const char *id) {
_cleanup_(boot_config_free) BootConfig config = {};
int r;
assert(m);
assert(id);
r = boot_entries_load_config_auto(NULL, NULL, &config);
if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
return r;
r = manager_read_efi_boot_loader_entries(m);
if (r >= 0)
(void) boot_entries_augment_from_loader(&config, m->efi_boot_loader_entries, true);
return boot_config_has_entry(&config, id);
}
static int method_set_reboot_to_boot_loader_entry(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
Manager *m = userdata;
bool use_efi;
const char *v;
int r;
assert(message);
assert(m);
r = sd_bus_message_read(message, "s", &v);
if (r < 0)
return r;
if (isempty(v))
v = NULL;
else if (efi_loader_entry_name_valid(v)) {
r = boot_loader_entry_exists(m, v);
if (r < 0)
return r;
if (r == 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
} else
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
if (r == -ENXIO) {
uint64_t features;
/* EFI case: let's see if booting into boot loader entry is supported. */
r = efi_loader_get_features(&features);
if (r < 0)
log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
use_efi = true;
} else if (r <= 0) {
/* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
} else
/* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
use_efi = false;
r = bus_verify_polkit_async(message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-to-boot-loader-entry",
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 */
if (use_efi) {
if (isempty(v))
/* Delete item */
r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
else
r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
if (r < 0)
return r;
} else {
if (isempty(v)) {
if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
return -errno;
} else {
r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
if (r < 0)
return r;
}
}
return sd_bus_reply_method_return(message, NULL);
}
static int method_can_reboot_to_boot_loader_entry(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
_unused_ Manager *m = userdata;
int r;
assert(message);
assert(m);
r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
if (r == -ENXIO) {
uint64_t features = 0;
/* EFI case, let's see if booting into boot loader entry is supported. */
r = efi_loader_get_features(&features);
if (r < 0)
log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
return sd_bus_reply_method_return(message, "s", "na");
} else if (r <= 0) {
/* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
if (r < 0)
log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
return sd_bus_reply_method_return(message, "s", "na");
}
return return_test_polkit(
message,
CAP_SYS_ADMIN,
"org.freedesktop.login1.set-reboot-to-boot-loader-entry",
NULL,
UID_INVALID,
error);
}
static int property_get_boot_loader_entries(
sd_bus *bus,
const char *path,
const char *interface,
const char *property,
sd_bus_message *reply,
void *userdata,
sd_bus_error *error) {
_cleanup_(boot_config_free) BootConfig config = {};
Manager *m = userdata;
size_t i;
int r;
assert(bus);
assert(reply);
assert(m);
r = boot_entries_load_config_auto(NULL, NULL, &config);
if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
return r;
r = manager_read_efi_boot_loader_entries(m);
if (r >= 0)
(void) boot_entries_augment_from_loader(&config, m->efi_boot_loader_entries, true);
r = sd_bus_message_open_container(reply, 'a', "s");
if (r < 0)
return r;
for (i = 0; i < config.n_entries; i++) {
BootEntry *e = config.entries + i;
r = sd_bus_message_append(reply, "s", e->id);
if (r < 0)
return r;
}
return sd_bus_message_close_container(reply);
}
static int method_set_wall_message(
sd_bus_message *message,
void *userdata,
sd_bus_error *error) {
int r;
Manager *m = userdata;
char *wall_message;
unsigned enable_wall_messages;
assert(message);
assert(m);
r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
if (r < 0)
return r;
/* Short-circuit the operation if the desired state is already in place, to
* avoid an unnecessary polkit permission check. */
if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
m->enable_wall_messages == enable_wall_messages)
goto done;
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 */
r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
if (r < 0)
return log_oom();
m->enable_wall_messages = enable_wall_messages;
done:
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;
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_REBOOT_KEY ? "org.freedesktop.login1.inhibit-handle-reboot-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));
_cleanup_(inhibitor_freep) Inhibitor *i = NULL;
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)
return -ENOMEM;
fifo_fd = inhibitor_create_fifo(i);
if (fifo_fd < 0)
return fifo_fd;
r = inhibitor_start(i);
if (r < 0)
return r;
TAKE_PTR(i);
return sd_bus_reply_method_return(message, "h", fifo_fd);
}
static 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("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 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("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), 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("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), 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("LidClosed", "b", property_get_lid_closed, 0, 0),
SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 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", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), 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_hashmap_size, offsetof(Manager, inhibitors), 0),
SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
SD_BUS_METHOD_WITH_NAMES("GetSession",
"s",
SD_BUS_PARAM(session_id),
"o",
SD_BUS_PARAM(object_path),
method_get_session,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("GetSessionByPID",
"u",
SD_BUS_PARAM(pid),
"o",
SD_BUS_PARAM(object_path),
method_get_session_by_pid,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("GetUser",
"u",
SD_BUS_PARAM(uid),
"o",
SD_BUS_PARAM(object_path),
method_get_user,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("GetUserByPID",
"u",
SD_BUS_PARAM(pid),
"o",
SD_BUS_PARAM(object_path),
method_get_user_by_pid,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("GetSeat",
"s",
SD_BUS_PARAM(seat_id),
"o",
SD_BUS_PARAM(object_path),
method_get_seat,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("ListSessions",
NULL,,
"a(susso)",
SD_BUS_PARAM(sessions),
method_list_sessions,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("ListUsers",
NULL,,
"a(uso)",
SD_BUS_PARAM(users),
method_list_users,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("ListSeats",
NULL,,
"a(so)",
SD_BUS_PARAM(seats),
method_list_seats,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("ListInhibitors",
NULL,,
"a(ssssuu)",
SD_BUS_PARAM(inhibitors),
method_list_inhibitors,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CreateSession",
"uusssssussbssa(sv)",
SD_BUS_PARAM(uid)
SD_BUS_PARAM(pid)
SD_BUS_PARAM(service)
SD_BUS_PARAM(type)
SD_BUS_PARAM(class)
SD_BUS_PARAM(desktop)
SD_BUS_PARAM(seat_id)
SD_BUS_PARAM(vtnr)
SD_BUS_PARAM(tty)
SD_BUS_PARAM(display)
SD_BUS_PARAM(remote)
SD_BUS_PARAM(remote_user)
SD_BUS_PARAM(remote_host)
SD_BUS_PARAM(properties),
"soshusub",
SD_BUS_PARAM(session_id)
SD_BUS_PARAM(object_path)
SD_BUS_PARAM(runtime_path)
SD_BUS_PARAM(fifo_fd)
SD_BUS_PARAM(uid)
SD_BUS_PARAM(seat_id)
SD_BUS_PARAM(vtnr)
SD_BUS_PARAM(existing),
method_create_session,
0),
SD_BUS_METHOD_WITH_NAMES("ReleaseSession",
"s",
SD_BUS_PARAM(session_id),
NULL,,
method_release_session,
0),
SD_BUS_METHOD_WITH_NAMES("ActivateSession",
"s",
SD_BUS_PARAM(session_id),
NULL,,
method_activate_session,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("ActivateSessionOnSeat",
"ss",
SD_BUS_PARAM(session_id)
SD_BUS_PARAM(seat_id),
NULL,,
method_activate_session_on_seat,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("LockSession",
"s",
SD_BUS_PARAM(session_id),
NULL,,
method_lock_session,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("UnlockSession",
"s",
SD_BUS_PARAM(session_id),
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_WITH_NAMES("KillSession",
"ssi",
SD_BUS_PARAM(session_id)
SD_BUS_PARAM(who)
SD_BUS_PARAM(signal_number),
NULL,,
method_kill_session,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("KillUser",
"ui",
SD_BUS_PARAM(uid)
SD_BUS_PARAM(signal_number),
NULL,,
method_kill_user,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("TerminateSession",
"s",
SD_BUS_PARAM(session_id),
NULL,,
method_terminate_session,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("TerminateUser",
"u",
SD_BUS_PARAM(uid),
NULL,,
method_terminate_user,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("TerminateSeat",
"s",
SD_BUS_PARAM(seat_id),
NULL,,
method_terminate_seat,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SetUserLinger",
"ubb",
SD_BUS_PARAM(uid)
SD_BUS_PARAM(enable)
SD_BUS_PARAM(interactive),
NULL,,
method_set_user_linger,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("AttachDevice",
"ssb",
SD_BUS_PARAM(seat_id)
SD_BUS_PARAM(sysfs_path)
SD_BUS_PARAM(interactive),
NULL,,
method_attach_device,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("FlushDevices",
"b",
SD_BUS_PARAM(interactive),
NULL,,
method_flush_devices,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("PowerOff",
"b",
SD_BUS_PARAM(interactive),
NULL,,
method_poweroff,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("PowerOffWithFlags",
"t",
SD_BUS_PARAM(flags),
NULL,,
method_poweroff,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("Reboot",
"b",
SD_BUS_PARAM(interactive),
NULL,,
method_reboot,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("RebootWithFlags",
"t",
SD_BUS_PARAM(flags),
NULL,,
method_reboot,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("Halt",
"b",
SD_BUS_PARAM(interactive),
NULL,,
method_halt,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("HaltWithFlags",
"t",
SD_BUS_PARAM(flags),
NULL,,
method_halt,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("Suspend",
"b",
SD_BUS_PARAM(interactive),
NULL,,
method_suspend,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SuspendWithFlags",
"t",
SD_BUS_PARAM(flags),
NULL,,
method_suspend,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("Hibernate",
"b",
SD_BUS_PARAM(interactive),
NULL,,
method_hibernate,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("HibernateWithFlags",
"t",
SD_BUS_PARAM(flags),
NULL,,
method_hibernate,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("HybridSleep",
"b",
SD_BUS_PARAM(interactive),
NULL,,
method_hybrid_sleep,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("HybridSleepWithFlags",
"t",
SD_BUS_PARAM(flags),
NULL,,
method_hybrid_sleep,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SuspendThenHibernate",
"b",
SD_BUS_PARAM(interactive),
NULL,,
method_suspend_then_hibernate,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SuspendThenHibernateWithFlags",
"t",
SD_BUS_PARAM(flags),
NULL,,
method_suspend_then_hibernate,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanPowerOff",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_poweroff,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanReboot",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_reboot,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanHalt",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_halt,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanSuspend",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_suspend,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanHibernate",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_hibernate,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanHybridSleep",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_hybrid_sleep,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanSuspendThenHibernate",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_suspend_then_hibernate,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("ScheduleShutdown",
"st",
SD_BUS_PARAM(type)
SD_BUS_PARAM(usec),
NULL,,
method_schedule_shutdown,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CancelScheduledShutdown",
NULL,,
"b",
SD_BUS_PARAM(cancelled),
method_cancel_scheduled_shutdown,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("Inhibit",
"ssss",
SD_BUS_PARAM(what)
SD_BUS_PARAM(who)
SD_BUS_PARAM(why)
SD_BUS_PARAM(mode),
"h",
SD_BUS_PARAM(pipe_fd),
method_inhibit,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanRebootParameter",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_reboot_parameter,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SetRebootParameter",
"s",
SD_BUS_PARAM(parameter),
NULL,,
method_set_reboot_parameter,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanRebootToFirmwareSetup",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_reboot_to_firmware_setup,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SetRebootToFirmwareSetup",
"b",
SD_BUS_PARAM(enable),
NULL,,
method_set_reboot_to_firmware_setup,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanRebootToBootLoaderMenu",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_reboot_to_boot_loader_menu,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SetRebootToBootLoaderMenu",
"t",
SD_BUS_PARAM(timeout),
NULL,,
method_set_reboot_to_boot_loader_menu,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("CanRebootToBootLoaderEntry",
NULL,,
"s",
SD_BUS_PARAM(result),
method_can_reboot_to_boot_loader_entry,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SetRebootToBootLoaderEntry",
"s",
SD_BUS_PARAM(boot_loader_entry),
NULL,,
method_set_reboot_to_boot_loader_entry,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD_WITH_NAMES("SetWallMessage",
"sb",
SD_BUS_PARAM(wall_message)
SD_BUS_PARAM(enable),
NULL,,
method_set_wall_message,
SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL_WITH_NAMES("SessionNew",
"so",
SD_BUS_PARAM(session_id)
SD_BUS_PARAM(object_path),
0),
SD_BUS_SIGNAL_WITH_NAMES("SessionRemoved",
"so",
SD_BUS_PARAM(session_id)
SD_BUS_PARAM(object_path),
0),
SD_BUS_SIGNAL_WITH_NAMES("UserNew",
"uo",
SD_BUS_PARAM(uid)
SD_BUS_PARAM(object_path),
0),
SD_BUS_SIGNAL_WITH_NAMES("UserRemoved",
"uo",
SD_BUS_PARAM(uid)
SD_BUS_PARAM(object_path),
0),
SD_BUS_SIGNAL_WITH_NAMES("SeatNew",
"so",
SD_BUS_PARAM(seat_id)
SD_BUS_PARAM(object_path),
0),
SD_BUS_SIGNAL_WITH_NAMES("SeatRemoved",
"so",
SD_BUS_PARAM(seat_id)
SD_BUS_PARAM(object_path),
0),
SD_BUS_SIGNAL_WITH_NAMES("PrepareForShutdown",
"b",
SD_BUS_PARAM(start),
0),
SD_BUS_SIGNAL_WITH_NAMES("PrepareForSleep",
"b",
SD_BUS_PARAM(start),
0),
SD_BUS_VTABLE_END
};
const BusObjectImplementation manager_object = {
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
.vtables = BUS_VTABLES(manager_vtable),
.children = BUS_IMPLEMENTATIONS(&seat_object,
&session_object,
&user_object),
};
static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
assert(s);
assert(unit);
if (!s->started)
return 0;
if (result && !streq(result, "done")) {
_cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
"Job %u for unit '%s' failed with '%s'", jid, unit, result);
return session_send_create_reply(s, &e);
}
return session_send_create_reply(s, NULL);
}
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 */
(void) 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) {
if (streq_ptr(path, session->scope_job)) {
session->scope_job = mfree(session->scope_job);
(void) session_jobs_reply(session, id, unit, result);
session_save(session);
user_save(session->user);
}
session_add_to_gc_queue(session);
}
user = hashmap_get(m->user_units, unit);
if (user) {
if (streq_ptr(path, user->service_job)) {
user->service_job = mfree(user->service_job);
LIST_FOREACH(sessions_by_user, session, user->sessions)
(void) session_jobs_reply(session, id, unit, NULL /* don't propagate user service failures to the client */);
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;
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)
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_scope(
Manager *manager,
const char *scope,
pid_t pid,
const char *slice,
const char *description,
char **wants,
char **after,
const char *requires_mounts_for,
sd_bus_message *more_properties,
sd_bus_error *error,
char **job) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
char **i;
int r;
assert(manager);
assert(scope);
assert(pid > 1);
assert(job);
r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "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;
}
STRV_FOREACH(i, wants) {
r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
if (r < 0)
return r;
}
STRV_FOREACH(i, after) {
r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
if (r < 0)
return r;
}
if (!empty_or_root(requires_mounts_for)) {
r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
if (r < 0)
return r;
}
/* 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;
/* disable TasksMax= for the session scope, rely on the slice setting for it */
r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
if (r < 0)
return bus_log_create_error(r);
if (more_properties) {
/* If TasksMax also appears here, it will overwrite the default value set above */
r = sd_bus_message_copy(m, more_properties, true);
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 = bus_call_method(
manager->bus,
bus_systemd_mgr,
"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, const char *job_mode, sd_bus_error *error, char **ret_job) {
_cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
int r;
assert(manager);
assert(unit);
assert(ret_job);
r = bus_call_method(
manager->bus,
bus_systemd_mgr,
"StopUnit",
error,
&reply,
"ss", unit, job_mode ?: "fail");
if (r < 0) {
if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
BUS_ERROR_LOAD_FAILED)) {
*ret_job = NULL;
sd_bus_error_free(error);
return 0;
}
return r;
}
return strdup_job(reply, ret_job);
}
int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_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_names(&error, BUS_ERROR_NO_SUCH_UNIT,
BUS_ERROR_LOAD_FAILED,
BUS_ERROR_SCOPE_NOT_RUNNING))
return 0;
sd_bus_error_move(ret_error, &error);
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 bus_call_method(
manager->bus,
bus_systemd_mgr,
"KillUnit",
error,
NULL,
"ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
}
int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
_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 dropped off momentarily, let's
* not make this an error */
if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
SD_BUS_ERROR_DISCONNECTED))
return true;
/* If the unit is already unloaded then it's not
* active */
if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
BUS_ERROR_LOAD_FAILED))
return false;
sd_bus_error_move(ret_error, &error);
return r;
}
r = sd_bus_message_read(reply, "s", &state);
if (r < 0)
return r;
return !STR_IN_SET(state, "inactive", "failed");
}
int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
_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_names(&error, SD_BUS_ERROR_NO_REPLY,
SD_BUS_ERROR_DISCONNECTED))
return true;
if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
return false;
sd_bus_error_move(ret_error, &error);
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;
}