#include <errno.h>

#include <string.h>

#include <unistd.h>

#include <pwd.h>

#include "sd-id128.h"

#include "sd-messages.h"

#include "strv.h"

#include "mkdir.h"

#include "path-util.h"

#include "special.h"

#include "sleep-config.h"

#include "fileio-label.h"

#include "label.h"

#include "utf8.h"

#include "unit-name.h"

#include "virt.h"

#include "audit.h"

#include "bus-util.h"

#include "bus-error.h"

#include "logind.h"

#include "bus-errors.h"

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;

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 BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);

static int method_get_session(sd_bus *bus, 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(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "s", &name);

if (r < 0)

return r;

session = hashmap_get(m->sessions, name);

if (!session)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);

p = session_bus_path(session);

if (!p)

return -ENOMEM;

return sd_bus_reply_method_return(message, "o", p);

}

static int method_get_session_by_pid(sd_bus *bus, 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(bus);

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) {

r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), &pid);

if (r < 0)

return r;

}

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 %lu does not belong to any known session", (unsigned long) 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 *bus, 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(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "u", &uid);

if (r < 0)

return r;

user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));

if (!user)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user '%lu' known or logged in", (unsigned long) uid);

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 *bus, 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(bus);

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) {

r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), &pid);

if (r < 0)

return r;

}

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 %lu does not belong to any known or logged in user", (unsigned long) 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 *bus, 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(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "s", &name);

if (r < 0)

return r;

seat = hashmap_get(m->seats, name);

if (!seat)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);

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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

Manager *m = userdata;

Session *session;

Iterator i;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_new_method_return(message, &reply);

if (r < 0)

return r;

r = sd_bus_message_open_container(reply, 'a', "(susso)");

if (r < 0)

return r;

HASHMAP_FOREACH(session, m->sessions, i) {

_cleanup_free_ char *p = NULL;

p = session_bus_path(session);

if (!p)

return -ENOMEM;

r = sd_bus_message_append(reply, "(susso)",

session->id,

(uint32_t) session->user->uid,

session->user->name,

session->seat ? session->seat->id : "",

p);

if (r < 0)

return r;

}

r = sd_bus_message_close_container(reply);

if (r < 0)

return r;

return sd_bus_send(bus, reply, NULL);

}

static int method_list_users(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

Manager *m = userdata;

User *user;

Iterator i;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_new_method_return(message, &reply);

if (r < 0)

return r;

r = sd_bus_message_open_container(reply, 'a', "(uso)");

if (r < 0)

return r;

HASHMAP_FOREACH(user, m->users, i) {

_cleanup_free_ char *p = NULL;

p = user_bus_path(user);

if (!p)

return -ENOMEM;

r = sd_bus_message_append(reply, "(uso)",

(uint32_t) user->uid,

user->name,

p);

if (r < 0)

return r;

}

r = sd_bus_message_close_container(reply);

if (r < 0)

return r;

return sd_bus_send(bus, reply, NULL);

}

static int method_list_seats(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

Manager *m = userdata;

Seat *seat;

Iterator i;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_new_method_return(message, &reply);

if (r < 0)

return r;

r = sd_bus_message_open_container(reply, 'a', "(so)");

if (r < 0)

return r;

HASHMAP_FOREACH(seat, m->seats, i) {

_cleanup_free_ char *p = NULL;

p = seat_bus_path(seat);

if (!p)

return -ENOMEM;

r = sd_bus_message_append(reply, "(so)", seat->id, p);

if (r < 0)

return r;

}

r = sd_bus_message_close_container(reply);

if (r < 0)

return r;

return sd_bus_send(bus, reply, NULL);

}

static int method_list_inhibitors(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

Manager *m = userdata;

Inhibitor *inhibitor;

Iterator i;

int r;

r = sd_bus_message_new_method_return(message, &reply);

if (r < 0)

return r;

r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");

if (r < 0)

return r;

HASHMAP_FOREACH(inhibitor, m->inhibitors, i) {

r = sd_bus_message_append(reply, "(ssssuu)",

strempty(inhibit_what_to_string(inhibitor->what)),

strempty(inhibitor->who),

strempty(inhibitor->why),

strempty(inhibit_mode_to_string(inhibitor->mode)),

(uint32_t) inhibitor->uid,

(uint32_t) inhibitor->pid);

if (r < 0)

return r;

}

r = sd_bus_message_close_container(reply);

if (r < 0)

return r;

return sd_bus_send(bus, reply, NULL);

}

static int method_create_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host;

uint32_t uid, leader, audit_id = 0;

_cleanup_free_ char *id = NULL;

Session *session = NULL;

Manager *m = userdata;

User *user = NULL;

Seat *seat = NULL;

int remote;

uint32_t vtnr = 0;

SessionType t;

SessionClass c;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "uussssussbss", &uid, &leader, &service, &type, &class, &cseat, &vtnr, &tty, &display, &remote, &remote_user, &remote_host);

if (r < 0)

return r;

if (leader == 1)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");

if (isempty(type))

t = _SESSION_TYPE_INVALID;

else {

t = session_type_from_string(type);

if (t < 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session type %s", type);

}

if (isempty(class))

c = _SESSION_CLASS_INVALID;

else {

c = session_class_from_string(class);

if (c < 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session class %s", class);

}

if (isempty(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", seat);

}

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);

v = vtnr_from_tty(tty);

if (v <= 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot determine VT number from virtual console TTY %s", tty);

if (!vtnr)

vtnr = (uint32_t) v;

else if (vtnr != (uint32_t) v)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified TTY and VT number do not match");

} else if (tty_is_console(tty)) {

if (!seat)

seat = m->seat0;

else if (seat != m->seat0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but seat is not seat0");

if (vtnr != 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but VT number is not 0");

}

if (seat) {

if (seat_has_vts(seat)) {

if (vtnr > 63)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "VT number out of range");

} else {

if (vtnr != 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat has no VTs but VT number not 0");

}

}

r = sd_bus_message_enter_container(message, 'a', "(sv)");

if (r < 0)

return r;

if (t == _SESSION_TYPE_INVALID) {

if (!isempty(display))

t = SESSION_X11;

else if (!isempty(tty))

t = SESSION_TTY;

else

t = SESSION_UNSPECIFIED;

}

if (c == _SESSION_CLASS_INVALID) {

if (!isempty(display) || !isempty(tty))

c = SESSION_USER;

else

c = SESSION_BACKGROUND;

}

if (leader <= 0) {

assert_cc(sizeof(uint32_t) == sizeof(pid_t));

r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), (pid_t*) &leader);

if (r < 0)

return r;

}

manager_get_session_by_pid(m, leader, &session);

if (session) {

_cleanup_free_ char *path = NULL;

_cleanup_close_ int fifo_fd = -1;

/* Session already exists, client is probably

fifo_fd = session_create_fifo(session);

if (fifo_fd < 0)

return fifo_fd;

path = session_bus_path(session);

if (!path)

return -ENOMEM;

return sd_bus_reply_method_return(

message, "soshusub",

session->id,

path,

session->user->runtime_path,

fifo_fd,

(uint32_t) session->user->uid,

session->seat ? session->seat->id : "",

(uint32_t) session->vtnr,

true);

}

audit_session_from_pid(leader, &audit_id);

if (audit_id > 0) {

/* Keep our session IDs and the audit session IDs in sync */

if (asprintf(&id, "%lu", (unsigned long) audit_id) < 0)

return -ENOMEM;

/* Wut? There's already a session by this name and we

if (hashmap_get(m->sessions, id)) {

log_warning("Existing logind session ID %s used by new audit session, ignoring", id);

audit_id = 0;

free(id);

id = NULL;

}

}

if (!id) {

do {

free(id);

id = NULL;

if (asprintf(&id, "c%lu", ++m->session_counter) < 0)

return -ENOMEM;

} while (hashmap_get(m->sessions, id));

}

r = manager_add_user_by_uid(m, uid, &user);

if (r < 0)

goto fail;

r = manager_add_session(m, id, &session);

if (r < 0)

goto fail;

session_set_user(session, user);

session->leader = leader;

session->audit_id = audit_id;

session->type = t;

session->class = c;

session->remote = remote;

session->vtnr = vtnr;

if (!isempty(tty)) {

session->tty = strdup(tty);

if (!session->tty) {

r = -ENOMEM;

goto fail;

}

}

if (!isempty(display)) {

session->display = strdup(display);

if (!session->display) {

r = -ENOMEM;

goto fail;

}

}

if (!isempty(remote_user)) {

session->remote_user = strdup(remote_user);

if (!session->remote_user) {

r = -ENOMEM;

goto fail;

}

}

if (!isempty(remote_host)) {

session->remote_host = strdup(remote_host);

if (!session->remote_host) {

r = -ENOMEM;

goto fail;

}

}

if (!isempty(service)) {

session->service = strdup(service);

if (!session->service) {

r = -ENOMEM;

goto fail;

}

}

if (seat) {

r = seat_attach_session(seat, session);

if (r < 0)

goto fail;

}

r = session_start(session);

if (r < 0)

goto fail;

session->create_message = sd_bus_message_ref(message);

/* Now, let's wait until the slice unit and stuff got

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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

Session *session;

const char *name;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "s", &name);

if (r < 0)

return r;

session = hashmap_get(m->sessions, name);

if (!session)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);

/* We use the FIFO to detect stray sessions where the process

session_remove_fifo(session);

session_save(session);

user_save(session->user);

return sd_bus_reply_method_return(message, NULL);

}

static int method_activate_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

Session *session;

const char *name;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "s", &name);

if (r < 0)

return r;

session = hashmap_get(m->sessions, name);

if (!session)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);

r = session_activate(session);

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int method_activate_session_on_seat(sd_bus *bus, 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(bus);

assert(message);

assert(m);

/* Same as ActivateSession() but refuses to work if

r = sd_bus_message_read(message, "ss", &session_name, &seat_name);

if (r < 0)

return r;

session = hashmap_get(m->sessions, session_name);

if (!session)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", session_name);

seat = hashmap_get(m->seats, seat_name);

if (!seat)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", seat_name);

if (session->seat != seat)

return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT, "Session %s not on seat %s", session_name, seat_name);

r = session_activate(session);

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int method_lock_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

Session *session;

const char *name;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "s", &name);

if (r < 0)

return r;

session = hashmap_get(m->sessions, name);

if (!session)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);

r = session_send_lock(session, streq(sd_bus_message_get_member(message), "LockSession"));

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int method_lock_sessions(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

int r;

assert(bus);

assert(message);

assert(m);

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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

const char *name, *swho;

Manager *m = userdata;

Session *session;

int32_t signo;

KillWho who;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "ssi", &name, &swho, &signo);

if (r < 0)

return r;

if (isempty(swho))

who = KILL_ALL;

else {

who = kill_who_from_string(swho);

if (who < 0)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);

}

if (signo <= 0 || signo >= _NSIG)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);

session = hashmap_get(m->sessions, name);

if (!session)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);

r = session_kill(session, who, signo);

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int method_kill_user(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

uint32_t uid;

int32_t signo;

User *user;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "ui", &uid, &signo);

if (r < 0)

return r;

if (signo <= 0 || signo >= _NSIG)

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);

user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));

if (!user)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user '%lu' known or logged in", (unsigned long) uid);

r = user_kill(user, signo);

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int method_terminate_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

const char *name;

Session *session;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "s", &name);

if (r < 0)

return r;

session = hashmap_get(m->sessions, name);

if (!session)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);

r = session_stop(session);

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int method_terminate_user(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

uint32_t uid;

User *user;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "u", &uid);

if (r < 0)

return r;

user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));

if (!user)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user '%lu' known or logged in", (unsigned long) uid);

r = user_stop(user);

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int method_terminate_seat(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

const char *name;

Seat *seat;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "s", &name);

if (r < 0)

return r;

seat = hashmap_get(m->seats, name);

if (!seat)

return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);

r = seat_stop_sessions(seat);

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int method_set_user_linger(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

_cleanup_free_ char *cc = NULL;

Manager *m = userdata;

int b, r;

struct passwd *pw;

const char *path;

uint32_t uid;

int interactive;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);

if (r < 0)

return r;

errno = 0;

pw = getpwuid(uid);

if (!pw)

return errno ? -errno : -ENOENT;

r = bus_verify_polkit_async(bus,

&m->polkit_registry,

message,

"org.freedesktop.login1.set-user-linger",

interactive,

error,

method_set_user_linger, m);

if (r < 0)

return r;

if (r == 0)

return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */

mkdir_p_label("/var/lib/systemd", 0755);

r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0);

if (r < 0)

return r;

cc = cescape(pw->pw_name);

if (!cc)

return -ENOMEM;

path = strappenda("/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, ULONG_TO_PTR((unsigned long) uid));

if (u)

user_add_to_gc_queue(u);

}

return sd_bus_reply_method_return(message, NULL);

}

static int trigger_device(Manager *m, struct udev_device *d) {

struct udev_enumerate *e;

struct udev_list_entry *first, *item;

int r;

assert(m);

e = udev_enumerate_new(m->udev);

if (!e) {

r = -ENOMEM;

goto finish;

}

if (d) {

if (udev_enumerate_add_match_parent(e, d) < 0) {

r = -EIO;

goto finish;

}

}

if (udev_enumerate_scan_devices(e) < 0) {

r = -EIO;

goto finish;

}

first = udev_enumerate_get_list_entry(e);

udev_list_entry_foreach(item, first) {

_cleanup_free_ char *t = NULL;

const char *p;

p = udev_list_entry_get_name(item);

t = strappend(p, "/uevent");

if (!t) {

r = -ENOMEM;

goto finish;

}

write_string_file(t, "change");

}

r = 0;

finish:

if (e)

udev_enumerate_unref(e);

return r;

}

static int attach_device(Manager *m, const char *seat, const char *sysfs) {

_cleanup_free_ char *rule = NULL, *file = NULL;

const char *id_for_seat;

struct udev_device *d;

int r;

assert(m);

assert(seat);

assert(sysfs);

d = udev_device_new_from_syspath(m->udev, sysfs);

if (!d)

return -ENODEV;

if (!udev_device_has_tag(d, "seat")) {

r = -ENODEV;

goto finish;

}

id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");

if (!id_for_seat) {

r = -ENODEV;

goto finish;

}

if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0) {

r = -ENOMEM;

goto finish;

}

if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0) {

r = -ENOMEM;

goto finish;

}

mkdir_p_label("/etc/udev/rules.d", 0755);

label_init("/etc");

r = write_string_file_atomic_label(file, rule);

if (r < 0)

goto finish;

r = trigger_device(m, d);

finish:

if (d)

udev_device_unref(d);

return r;

}

static int flush_devices(Manager *m) {

_cleanup_closedir_ DIR *d;

assert(m);

d = opendir("/etc/udev/rules.d");

if (!d) {

if (errno != ENOENT)

log_warning("Failed to open /etc/udev/rules.d: %m");

} else {

struct dirent *de;

while ((de = readdir(d))) {

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("Failed to unlink %s: %m", de->d_name);

}

}

return trigger_device(m, NULL);

}

static int method_attach_device(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

const char *sysfs, *seat;

Manager *m = userdata;

int interactive, r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);

if (r < 0)

return r;

if (!path_startswith(sysfs, "/sys"))

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);

if (!seat_name_is_valid(seat))

return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat %s is not valid", seat);

r = bus_verify_polkit_async(bus,

&m->polkit_registry,

message,

"org.freedesktop.login1.attach-device",

interactive,

error,

method_attach_device, m);

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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

int interactive, r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "b", &interactive);

if (r < 0)

return r;

r = bus_verify_polkit_async(bus,

&m->polkit_registry,

message,

"org.freedesktop.login1.flush-devices",

interactive,

error,

method_flush_devices, m);

if (r < 0)

return r;

if (r == 0)

return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */

r = flush_devices(m);

if (r < 0)

return r;

return sd_bus_reply_method_return(message, NULL);

}

static int have_multiple_sessions(

Manager *m,

uid_t uid) {

Session *session;

Iterator i;

assert(m);

/* Check for other users' sessions. Greeter sessions do not

HASHMAP_FOREACH(session, m->sessions, i)

if (session->class == SESSION_USER &&

!session->closing &&

session->user->uid != uid)

return true;

return false;

}

static int bus_manager_log_shutdown(

Manager *m,

InhibitWhat w,

const char *unit_name) {

const char *p, *q;

assert(m);

assert(unit_name);

if (w != INHIBIT_SHUTDOWN)

return 0;

if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {

p = "MESSAGE=System is powering down.";

q = "SHUTDOWN=power-off";

} else if (streq(unit_name, SPECIAL_HALT_TARGET)) {

p = "MESSAGE=System is halting.";

q = "SHUTDOWN=halt";

} else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {

p = "MESSAGE=System is rebooting.";

q = "SHUTDOWN=reboot";

} else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {

p = "MESSAGE=System is rebooting with kexec.";

q = "SHUTDOWN=kexec";

} else {

p = "MESSAGE=System is shutting down.";

q = NULL;

}

return log_struct(LOG_NOTICE, MESSAGE_ID(SD_MESSAGE_SHUTDOWN),

p,

q, NULL);

}

static int execute_shutdown_or_sleep(

Manager *m,

InhibitWhat w,

const char *unit_name,

sd_bus_error *error) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

const char *p;

char *c;

int r;

assert(m);

assert(w >= 0);

assert(w < _INHIBIT_WHAT_MAX);

assert(unit_name);

bus_manager_log_shutdown(m, w, unit_name);

r = sd_bus_call_method(

m->bus,

"org.freedesktop.systemd1",

"/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"StartUnit",

error,

&reply,

"ss", unit_name, "replace-irreversibly");

if (r < 0)

return r;

r = sd_bus_message_read(reply, "o", &p);

if (r < 0)

return r;

c = strdup(p);

if (!c)

return -ENOMEM;

m->action_unit = unit_name;

free(m->action_job);

m->action_job = c;

m->action_what = w;

return 0;

}

static int delay_shutdown_or_sleep(

Manager *m,

InhibitWhat w,

const char *unit_name) {

assert(m);

assert(w >= 0);

assert(w < _INHIBIT_WHAT_MAX);

assert(unit_name);

m->action_timestamp = now(CLOCK_MONOTONIC);

m->action_unit = unit_name;

m->action_what = w;

return 0;

}

static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {

static const char * const signal_name[_INHIBIT_WHAT_MAX] = {

[INHIBIT_SHUTDOWN] = "PrepareForShutdown",

[INHIBIT_SLEEP] = "PrepareForSleep"

};

int active = _active;

assert(m);

assert(w >= 0);

assert(w < _INHIBIT_WHAT_MAX);

assert(signal_name[w]);

return sd_bus_emit_signal(m->bus,

"/org/freedesktop/login1",

"org.freedesktop.login1.Manager",

signal_name[w],

"b",

active);

}

int bus_manager_shutdown_or_sleep_now_or_later(

Manager *m,

const char *unit_name,

InhibitWhat w,

sd_bus_error *error) {

bool delayed;

int r;

assert(m);

assert(unit_name);

assert(w >= 0);

assert(w <= _INHIBIT_WHAT_MAX);

assert(!m->action_job);

/* Tell everybody to prepare for shutdown/sleep */

send_prepare_for(m, w, true);

delayed =

m->inhibit_delay_max > 0 &&

manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);

if (delayed)

/* Shutdown is delayed, keep in mind what we

r = delay_shutdown_or_sleep(m, w, unit_name);

else

/* Shutdown is not delayed, execute it

r = execute_shutdown_or_sleep(m, w, unit_name, error);

return r;

}

static int method_do_shutdown_or_sleep(

Manager *m,

sd_bus_message *message,

const char *unit_name,

InhibitWhat w,

const char *action,

const char *action_multiple_sessions,

const char *action_ignore_inhibit,

const char *sleep_verb,

sd_bus_message_handler_t method,

sd_bus_error *error) {

bool multiple_sessions, blocked;

int interactive, r;

uid_t uid;

assert(m);

assert(message);

assert(unit_name);

assert(w >= 0);

assert(w <= _INHIBIT_WHAT_MAX);

assert(action);

assert(action_multiple_sessions);

assert(action_ignore_inhibit);

assert(method);

r = sd_bus_message_read(message, "b", &interactive);

if (r < 0)

return r;

/* Don't allow multiple jobs being executed at the same time */

if (m->action_what)

return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress");

if (sleep_verb) {

r = can_sleep(sleep_verb);

if (r < 0)

return r;

if (r == 0)

return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported");

}

r = sd_bus_get_owner_uid(m->bus, sd_bus_message_get_sender(message), &uid);

if (r < 0)

return r;

r = have_multiple_sessions(m, uid);

if (r < 0)

return r;

multiple_sessions = r > 0;

blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);

if (multiple_sessions) {

r = bus_verify_polkit_async(m->bus, &m->polkit_registry, message,

action_multiple_sessions, interactive, error, method, m);

if (r < 0)

return r;

}

if (blocked) {

r = bus_verify_polkit_async(m->bus, &m->polkit_registry, message,

action_ignore_inhibit, interactive, error, method, m);

if (r < 0)

return r;

}

if (!multiple_sessions && !blocked) {

r = bus_verify_polkit_async(m->bus, &m->polkit_registry, message,

action, interactive, error, method, m);

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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_do_shutdown_or_sleep(

m, message,

SPECIAL_POWEROFF_TARGET,

INHIBIT_SHUTDOWN,

"org.freedesktop.login1.power-off",

"org.freedesktop.login1.power-off-multiple-sessions",

"org.freedesktop.login1.power-off-ignore-inhibit",

NULL,

method_poweroff,

error);

}

static int method_reboot(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_do_shutdown_or_sleep(

m, message,

SPECIAL_REBOOT_TARGET,

INHIBIT_SHUTDOWN,

"org.freedesktop.login1.reboot",

"org.freedesktop.login1.reboot-multiple-sessions",

"org.freedesktop.login1.reboot-ignore-inhibit",

NULL,

method_reboot,

error);

}

static int method_suspend(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_do_shutdown_or_sleep(

m, message,

SPECIAL_SUSPEND_TARGET,

INHIBIT_SLEEP,

"org.freedesktop.login1.suspend",

"org.freedesktop.login1.suspend-multiple-sessions",

"org.freedesktop.login1.suspend-ignore-inhibit",

"suspend",

method_suspend,

error);

}

static int method_hibernate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_do_shutdown_or_sleep(

m, message,

SPECIAL_HIBERNATE_TARGET,

INHIBIT_SLEEP,

"org.freedesktop.login1.hibernate",

"org.freedesktop.login1.hibernate-multiple-sessions",

"org.freedesktop.login1.hibernate-ignore-inhibit",

"hibernate",

method_hibernate,

error);

}

static int method_hybrid_sleep(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_do_shutdown_or_sleep(

m, message,

SPECIAL_HYBRID_SLEEP_TARGET,

INHIBIT_SLEEP,

"org.freedesktop.login1.hibernate",

"org.freedesktop.login1.hibernate-multiple-sessions",

"org.freedesktop.login1.hibernate-ignore-inhibit",

"hybrid-sleep",

method_hybrid_sleep,

error);

}

static int method_can_shutdown_or_sleep(

Manager *m,

sd_bus_message *message,

InhibitWhat w,

const char *action,

const char *action_multiple_sessions,

const char *action_ignore_inhibit,

const char *sleep_verb,

sd_bus_error *error) {

bool multiple_sessions, challenge, blocked;

const char *result = NULL;

uid_t uid;

int r;

assert(m);

assert(message);

assert(w >= 0);

assert(w <= _INHIBIT_WHAT_MAX);

assert(action);

assert(action_multiple_sessions);

assert(action_ignore_inhibit);

if (sleep_verb) {

r = can_sleep(sleep_verb);

if (r < 0)

return r;

if (r == 0)

return sd_bus_reply_method_return(message, "s", "na");

}

r = sd_bus_get_owner_uid(m->bus, sd_bus_message_get_sender(message), &uid);

if (r < 0)

return r;

r = have_multiple_sessions(m, uid);

if (r < 0)

return r;

multiple_sessions = r > 0;

blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);

if (multiple_sessions) {

r = bus_verify_polkit(m->bus, message, action_multiple_sessions, false, &challenge, error);

if (r < 0)

return r;

if (r > 0)

result = "yes";

else if (challenge)

result = "challenge";

else

result = "no";

}

if (blocked) {

r = bus_verify_polkit(m->bus, message, action_ignore_inhibit, false, &challenge, error);

if (r < 0)

return r;

if (r > 0 && !result)

result = "yes";

else if (challenge && (!result || streq(result, "yes")))

result = "challenge";

else

result = "no";

}

if (!multiple_sessions && !blocked) {

/* If neither inhibit nor multiple sessions

r = bus_verify_polkit(m->bus, message, action, false, &challenge, error);

if (r < 0)

return r;

if (r > 0)

result = "yes";

else if (challenge)

result = "challenge";

else

result = "no";

}

return sd_bus_reply_method_return(message, "s", result);

}

static int method_can_poweroff(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_can_shutdown_or_sleep(

m, message,

INHIBIT_SHUTDOWN,

"org.freedesktop.login1.power-off",

"org.freedesktop.login1.power-off-multiple-sessions",

"org.freedesktop.login1.power-off-ignore-inhibit",

NULL,

error);

}

static int method_can_reboot(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_can_shutdown_or_sleep(

m, message,

INHIBIT_SHUTDOWN,

"org.freedesktop.login1.reboot",

"org.freedesktop.login1.reboot-multiple-sessions",

"org.freedesktop.login1.reboot-ignore-inhibit",

NULL,

error);

}

static int method_can_suspend(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_can_shutdown_or_sleep(

m, message,

INHIBIT_SLEEP,

"org.freedesktop.login1.suspend",

"org.freedesktop.login1.suspend-multiple-sessions",

"org.freedesktop.login1.suspend-ignore-inhibit",

"suspend",

error);

}

static int method_can_hibernate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_can_shutdown_or_sleep(

m, message,

INHIBIT_SLEEP,

"org.freedesktop.login1.hibernate",

"org.freedesktop.login1.hibernate-multiple-sessions",

"org.freedesktop.login1.hibernate-ignore-inhibit",

"hibernate",

error);

}

static int method_can_hybrid_sleep(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

return method_can_shutdown_or_sleep(

m, message,

INHIBIT_SLEEP,

"org.freedesktop.login1.hibernate",

"org.freedesktop.login1.hibernate-multiple-sessions",

"org.freedesktop.login1.hibernate-ignore-inhibit",

"hybrid-sleep",

error);

}

static int method_inhibit(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

const char *who, *why, *what, *mode;

_cleanup_free_ char *id = NULL;

_cleanup_close_ int fifo_fd = -1;

Manager *m = userdata;

Inhibitor *i = NULL;

InhibitMode mm;

InhibitWhat w;

pid_t pid;

uid_t uid;

int r;

assert(bus);

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

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(bus, &m->polkit_registry, message,

w == INHIBIT_SHUTDOWN ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :

w == INHIBIT_SLEEP ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep" : "org.freedesktop.login1.inhibit-delay-sleep") :

w == INHIBIT_IDLE ? "org.freedesktop.login1.inhibit-block-idle" :

w == INHIBIT_HANDLE_POWER_KEY ? "org.freedesktop.login1.inhibit-handle-power-key" :

w == INHIBIT_HANDLE_SUSPEND_KEY ? "org.freedesktop.login1.inhibit-handle-suspend-key" :

w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :

"org.freedesktop.login1.inhibit-handle-lid-switch",

false, error, method_inhibit, m);

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_get_owner_uid(m->bus, sd_bus_message_get_sender(message), &uid);

if (r < 0)

return r;

r = sd_bus_get_owner_pid(m->bus, sd_bus_message_get_sender(message), &pid);

if (r < 0)

return r;

do {

free(id);

id = NULL;

if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)

return -ENOMEM;

} while (hashmap_get(m->inhibitors, id));

r = manager_add_inhibitor(m, id, &i);

if (r < 0)

return r;

i->what = w;

i->mode = mm;

i->pid = pid;

i->uid = uid;

i->why = strdup(why);

i->who = strdup(who);

if (!i->why || !i->who) {

r = -ENOMEM;

goto fail;

}

fifo_fd = inhibitor_create_fifo(i);

if (fifo_fd < 0) {

r = fifo_fd;

goto fail;

}

inhibitor_start(i);

return sd_bus_reply_method_return(message, "h", fifo_fd);

fail:

if (i)

inhibitor_free(i);

return r;

}

const sd_bus_vtable manager_vtable[] = {

SD_BUS_VTABLE_START(0),

SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), 0),

SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), 0),

SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), 0),

SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), 0),

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), 0),

SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), 0),

SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), 0),

SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), 0),

SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), 0),

SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), 0),

SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), 0),

SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),

SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),

SD_BUS_METHOD("GetSession", "s", "o", method_get_session, 0),

SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, 0),

SD_BUS_METHOD("GetUser", "u", "o", method_get_user, 0),

SD_BUS_METHOD("GetUserByPID", "u", "o", method_get_user_by_pid, 0),

SD_BUS_METHOD("GetSeat", "s", "o", method_get_seat, 0),

SD_BUS_METHOD("ListSessions", NULL, "a(susso)", method_list_sessions, 0),

SD_BUS_METHOD("ListUsers", NULL, "a(uso)", method_list_users, 0),

SD_BUS_METHOD("ListSeats", NULL, "a(so)", method_list_seats, 0),

SD_BUS_METHOD("ListInhibitors", NULL, "a(ssssuu)", method_list_inhibitors, 0),

SD_BUS_METHOD("CreateSession", "uussssussbssa(sv)", "soshusub", method_create_session, 0),

SD_BUS_METHOD("ReleaseSession", "s", NULL, method_release_session, 0),

SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, 0),

SD_BUS_METHOD("ActivateSessionOnSeat", "ss", NULL, method_activate_session_on_seat, 0),

SD_BUS_METHOD("LockSession", "s", NULL, method_lock_session, 0),

SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, 0),

SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, 0),

SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, 0),

SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, 0),

SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, 0),

SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, 0),

SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, 0),

SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, 0),

SD_BUS_METHOD("SetUserLinger", "ubb", NULL, method_set_user_linger, 0),

SD_BUS_METHOD("AttachDevice", "ssb", NULL, method_attach_device, 0),

SD_BUS_METHOD("FlushDevices", "b", NULL, method_flush_devices, 0),

SD_BUS_METHOD("PowerOff", "b", NULL, method_poweroff, 0),

SD_BUS_METHOD("Reboot", "b", NULL, method_reboot, 0),

SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, 0),

SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, 0),

SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, 0),

SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, 0),

SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, 0),

SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, 0),

SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, 0),

SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, 0),

SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, 0),

SD_BUS_SIGNAL("SessionNew", "so", 0),

SD_BUS_SIGNAL("SessionRemoved", "so", 0),

SD_BUS_SIGNAL("UserNew", "uo", 0),

SD_BUS_SIGNAL("UserRemoved", "uo", 0),

SD_BUS_SIGNAL("SeatNew", "so", 0),

SD_BUS_SIGNAL("SeatRemoved", "so", 0),

SD_BUS_SIGNAL("PrepareForShutdown", "b", 0),

SD_BUS_SIGNAL("PrepareForSleep", "b", 0),

SD_BUS_VTABLE_END

};

int match_job_removed(sd_bus *bus, 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(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);

if (r < 0) {

bus_log_parse_error(r);

return r;

}

if (m->action_job && streq(m->action_job, path)) {

log_info("Operation finished.");

/* Tell people that they now may take a lock again */

send_prepare_for(m, m->action_what, false);

free(m->action_job);

m->action_job = NULL;

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)) {

free(session->scope_job);

session->scope_job = NULL;

}

if (session->started) {

if (streq(result, "done"))

session_send_create_reply(session, NULL);

else {

_cleanup_bus_error_free_ sd_bus_error e = SD_BUS_ERROR_NULL;

sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);

session_send_create_reply(session, &e);

}

} else

session_save(session);

session_add_to_gc_queue(session);

}

user = hashmap_get(m->user_units, unit);

if (user) {

if (streq_ptr(path, user->service_job)) {

free(user->service_job);

user->service_job = NULL;

}

if (streq_ptr(path, user->slice_job)) {

free(user->slice_job);

user->slice_job = NULL;

}

user_save(user);

user_add_to_gc_queue(user);

}

return 0;

}

int match_unit_removed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

const char *path, *unit;

Manager *m = userdata;

Session *session;

User *user;

int r;

assert(bus);

assert(message);

assert(m);

r = sd_bus_message_read(message, "so", &unit, &path);

if (r < 0) {

bus_log_parse_error(r);

return r;

}

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 *bus, 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(bus);

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 < 0)

return r;

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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

Manager *m = userdata;

Session *session;

Iterator i;

int b, r;

assert(bus);

r = sd_bus_message_read(message, "b", &b);

if (r < 0) {

bus_log_parse_error(r);

return r;

}

if (b)

return 0;

/* systemd finished reloading, let's recheck all our sessions */

log_debug("System manager has been reloaded, rechecking sessions...");

HASHMAP_FOREACH(session, m->sessions, i)

session_add_to_gc_queue(session);

return 0;

}

int match_name_owner_changed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {

const char *name, *old, *new;

Manager *m = userdata;

Session *session;

Iterator i;

int r;

char *key;

r = sd_bus_message_read(message, "sss", &name, &old, &new);

if (r < 0) {

bus_log_parse_error(r);

return r;

}

if (isempty(old) || !isempty(new))

return 0;

key = set_remove(m->busnames, (char*) old);

if (!key)

return 0;

/* Drop all controllers owned by this name */

free(key);

HASHMAP_FOREACH(session, m->sessions, i)

if (session_is_controller(session, old))

session_drop_controller(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);

}

int manager_dispatch_delayed(Manager *manager) {

_cleanup_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;

/* Continue delay? */

if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {

_cleanup_free_ char *comm = NULL, *u = NULL;

get_process_comm(offending->pid, &comm);

u = uid_to_name(offending->uid);

if (manager->action_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC))

return 0;

log_info("Delay lock is active (UID %lu/%s, PID %lu/%s) but inhibitor timeout is reached.",

(unsigned long) offending->uid, strna(u),

(unsigned long) offending->pid, strna(comm));

}

/* Actually do the operation */

r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);

if (r < 0) {

log_warning("Failed to send delayed message: %s", bus_error_message(&error, r));

manager->action_unit = NULL;

manager->action_what = 0;

return r;

}

return 1;

}

int manager_start_scope(

Manager *manager,

const char *scope,

pid_t pid,

const char *slice,

const char *description,

const char *after,

const char *kill_mode,

sd_bus_error *error,

char **job) {

_cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;

int r;

assert(manager);

assert(scope);

assert(pid > 1);

r = sd_bus_message_new_method_call(

manager->bus,

"org.freedesktop.systemd1",

"/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"StartTransientUnit",

&m);

if (r < 0)

return r;

r = sd_bus_message_append(m, "ss", strempty(scope), "fail");

if (r < 0)

return r;

r = sd_bus_message_open_container(m, 'a', "(sv)");

if (r < 0)

return r;

if (!isempty(slice)) {

r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);

if (r < 0)

return r;

}

if (!isempty(description)) {

r = sd_bus_message_append(m, "(sv)", "Description", "s", description);

if (r < 0)

return r;

}

if (!isempty(description)) {

r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);

if (r < 0)

return r;

}

if (!isempty(kill_mode)) {

r = sd_bus_message_append(m, "(sv)", "KillMode", "s", kill_mode);

if (r < 0)

return r;

}

/* cgroup empty notification is not available in containers

r = sd_bus_message_append(m, "(sv)", "TimeoutStopUSec", "t", 500 * USEC_PER_MSEC);

if (r < 0)

return r;

/* Make sure that the session shells are terminated with

r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);

if (r < 0)

return r;

r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);

if (r < 0)

return r;

r = sd_bus_message_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;

if (job) {

const char *j;

char *copy;

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_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

int r;

assert(manager);

assert(unit);

r = sd_bus_call_method(

manager->bus,

"org.freedesktop.systemd1",

"/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"StartUnit",

error,

&reply,

"ss", unit, "fail");

if (r < 0)

return r;

if (job) {

const char *j;

char *copy;

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_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

int r;

assert(manager);

assert(unit);

r = sd_bus_call_method(

manager->bus,

"org.freedesktop.systemd1",

"/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"StopUnit",

error,

&reply,

"ss", unit, "fail");

if (r < 0) {

if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||

sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {

if (job)

*job = NULL;

sd_bus_error_free(error);

return 0;

}

return r;

}

if (job) {

const char *j;

char *copy;

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_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {

assert(manager);

assert(unit);

return sd_bus_call_method(

manager->bus,

"org.freedesktop.systemd1",

"/org/freedesktop/systemd1",

"org.freedesktop.systemd1.Manager",

"KillUnit",

error,

NULL,

"ssi", unit, who == KILL_LEADER ? "main" : "all", signo);

}

int manager_unit_is_active(Manager *manager, const char *unit) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

_cleanup_free_ char *path = NULL;

const char *state;

int r;

assert(manager);

assert(unit);

path = unit_dbus_path_from_name(unit);

if (!path)

return -ENOMEM;

r = sd_bus_get_property(

manager->bus,

"org.freedesktop.systemd1",

path,

"org.freedesktop.systemd1.Unit",

"ActiveState",

&error,

&reply,

"s");

if (r < 0) {

/* systemd might have droppped off momentarily, let's

if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||

sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))

return true;

/* If the unit is already unloaded then it's not

if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||

sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))

return false;

return r;

}

r = sd_bus_message_read(reply, "s", &state);

if (r < 0)

return -EINVAL;

return !streq(state, "inactive") && !streq(state, "failed");

}

int manager_job_is_active(Manager *manager, const char *path) {

_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;

_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;

int r;

assert(manager);

assert(path);

r = sd_bus_get_property(

manager->bus,

"org.freedesktop.systemd1",

path,

"org.freedesktop.systemd1.Job",

"State",

&error,

&reply,

"s");

if (r < 0) {

if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||

sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))

return true;

if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))

return false;

return r;

}

/* We don't actually care about the state really. The fact

return true;

}