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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <pwd.h>
#include "logind.h"
#include "dbus-common.h"
#include "strv.h"
#include "mkdir.h"
#include "path-util.h"
#include "polkit.h"
#include "special.h"
#include "sleep-config.h"
#include "systemd/sd-id128.h"
#include "systemd/sd-messages.h"
#include "fileio-label.h"
#include "label.h"
#include "utf8.h"
#include "unit-name.h"
#include "bus-errors.h"
#include "virt.h"
#define BUS_MANAGER_INTERFACE \
" <interface name=\"org.freedesktop.login1.Manager\">\n" \
" <method name=\"GetSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetSessionByPID\">\n" \
" <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetUser\">\n" \
" <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetUserByPID\">\n" \
" <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"GetSeat\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ListSessions\">\n" \
" <arg name=\"sessions\" type=\"a(susso)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ListUsers\">\n" \
" <arg name=\"users\" type=\"a(uso)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ListSeats\">\n" \
" <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"CreateSession\">\n" \
" <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"service\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"type\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"class\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"vtnr\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"tty\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"display\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"remote\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"remote_user\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"remote_host\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"scope_properties\" type=\"a(sv)\" direction=\"in\"/>\n" \
" <arg name=\"id\" type=\"s\" direction=\"out\"/>\n" \
" <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \
" <arg name=\"runtime_path\" type=\"o\" direction=\"out\"/>\n" \
" <arg name=\"fd\" type=\"h\" direction=\"out\"/>\n" \
" <arg name=\"seat\" type=\"s\" direction=\"out\"/>\n" \
" <arg name=\"vtnr\" type=\"u\" direction=\"out\"/>\n" \
" <arg name=\"existing\" type=\"b\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ReleaseSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"ActivateSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"ActivateSessionOnSeat\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"LockSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"UnlockSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"LockSessions\"/>\n" \
" <method name=\"UnlockSessions\"/>\n" \
" <method name=\"KillSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"who\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"signal\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"KillUser\">\n" \
" <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"signal\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"TerminateSession\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"TerminateUser\">\n" \
" <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"TerminateSeat\">\n" \
" <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"SetUserLinger\">\n" \
" <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"b\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"AttachDevice\">\n" \
" <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"sysfs\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"FlushDevices\">\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"PowerOff\">\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"Reboot\">\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"Suspend\">\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"Hibernate\">\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"HybridSleep\">\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"CanPowerOff\">\n" \
" <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"CanReboot\">\n" \
" <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"CanSuspend\">\n" \
" <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"CanHibernate\">\n" \
" <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"CanHybridSleep\">\n" \
" <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"Inhibit\">\n" \
" <arg name=\"what\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"who\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"why\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>\n" \
" <arg name=\"fd\" type=\"h\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"ListInhibitors\">\n" \
" <arg name=\"inhibitors\" type=\"a(ssssuu)\" direction=\"out\"/>\n" \
" </method>\n" \
" <signal name=\"SessionNew\">\n" \
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"SessionRemoved\">\n" \
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"UserNew\">\n" \
" <arg name=\"uid\" type=\"u\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"UserRemoved\">\n" \
" <arg name=\"uid\" type=\"u\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"SeatNew\">\n" \
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"SeatRemoved\">\n" \
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
" </signal>\n" \
" <signal name=\"PrepareForShutdown\">\n" \
" <arg name=\"active\" type=\"b\"/>\n" \
" </signal>\n" \
" <signal name=\"PrepareForSleep\">\n" \
" <arg name=\"active\" type=\"b\"/>\n" \
" </signal>\n" \
" <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"KillOnlyUsers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"KillExcludeUsers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"KillUserProcesses\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"BlockInhibited\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"DelayInhibited\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"InhibitDelayMaxUSec\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"HandlePowerKey\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"HandleSuspendKey\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"HandleHibernateKey\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"HandleLidSwitch\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"IdleAction\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"IdleActionUSec\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"PreparingForShutdown\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"PreparingForSleep\" type=\"b\" access=\"read\"/>\n" \
" </interface>\n"
#define INTROSPECTION_BEGIN \
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
"<node>\n" \
BUS_MANAGER_INTERFACE \
BUS_PROPERTIES_INTERFACE \
BUS_PEER_INTERFACE \
BUS_INTROSPECTABLE_INTERFACE
#define INTROSPECTION_END \
"</node>\n"
#define INTERFACES_LIST \
BUS_GENERIC_INTERFACES_LIST \
"org.freedesktop.login1.Manager\0"
static int bus_manager_append_idle_hint(DBusMessageIter *i, const char *property, void *data) {
Manager *m = data;
dbus_bool_t b;
assert(i);
assert(property);
assert(m);
b = manager_get_idle_hint(m, NULL) > 0;
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
return -ENOMEM;
return 0;
}
static int bus_manager_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) {
Manager *m = data;
dual_timestamp t;
uint64_t u;
assert(i);
assert(property);
assert(m);
manager_get_idle_hint(m, &t);
u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
return -ENOMEM;
return 0;
}
static int bus_manager_append_inhibited(DBusMessageIter *i, const char *property, void *data) {
Manager *m = data;
InhibitWhat w;
const char *p;
w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
p = inhibit_what_to_string(w);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &p))
return -ENOMEM;
return 0;
}
static int bus_manager_append_preparing(DBusMessageIter *i, const char *property, void *data) {
Manager *m = data;
dbus_bool_t b;
assert(i);
assert(property);
if (streq(property, "PreparingForShutdown"))
b = !!(m->action_what & INHIBIT_SHUTDOWN);
else
b = !!(m->action_what & INHIBIT_SLEEP);
dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b);
return 0;
}
static int bus_manager_create_session(Manager *m, DBusMessage *message) {
const char *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *service;
uint32_t uid, leader, audit_id = 0;
_cleanup_free_ char *id = NULL;
Session *session = NULL;
User *user = NULL;
Seat *seat = NULL;
DBusMessageIter iter;
dbus_bool_t remote;
uint32_t vtnr = 0;
SessionType t;
SessionClass c;
bool b;
int r;
assert(m);
assert(message);
if (!dbus_message_iter_init(message, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &uid);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &leader);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &service);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &type);
if (isempty(type))
t = _SESSION_TYPE_INVALID;
else {
t = session_type_from_string(type);
if (t < 0)
return -EINVAL;
}
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &class);
if (isempty(class))
c = _SESSION_CLASS_INVALID;
else {
c = session_class_from_string(class);
if (c < 0)
return -EINVAL;
}
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &cseat);
if (isempty(cseat))
seat = NULL;
else {
seat = hashmap_get(m->seats, cseat);
if (!seat)
return -ENOENT;
}
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &vtnr);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &tty);
if (tty_is_vc(tty)) {
int v;
if (!seat)
seat = m->seat0;
else if (seat != m->seat0)
return -EINVAL;
v = vtnr_from_tty(tty);
if (v <= 0)
return v < 0 ? v : -EINVAL;
if (vtnr <= 0)
vtnr = (uint32_t) v;
else if (vtnr != (uint32_t) v)
return -EINVAL;
} else if (tty_is_console(tty)) {
if (!seat)
seat = m->seat0;
else if (seat != m->seat0)
return -EINVAL;
if (vtnr != 0)
return -EINVAL;
}
if (seat) {
if (seat_has_vts(seat)) {
if (vtnr > 63)
return -EINVAL;
} else {
if (vtnr != 0)
return -EINVAL;
}
}
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &display);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN)
return -EINVAL;
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;
}
dbus_message_iter_get_basic(&iter, &remote);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &remote_user);
if (!dbus_message_iter_next(&iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
return -EINVAL;
dbus_message_iter_get_basic(&iter, &remote_host);
if (leader <= 0) {
leader = bus_get_unix_process_id(m->bus, dbus_message_get_sender(message), NULL);
if (leader == 0)
return -EINVAL;
}
r = manager_get_session_by_pid(m, leader, &session);
if (session) {
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
_cleanup_free_ char *path = NULL;
_cleanup_close_ int fifo_fd = -1;
dbus_bool_t exists;
/* Session already exists, client is probably
* something like "su" which changes uid but is still
* the same session */
fifo_fd = session_create_fifo(session);
if (fifo_fd < 0) {
r = fifo_fd;
goto fail;
}
path = session_bus_path(session);
if (!path) {
r = -ENOMEM;
goto fail;
}
reply = dbus_message_new_method_return(message);
if (!reply) {
r = -ENOMEM;
goto fail;
}
cseat = session->seat ? session->seat->id : "";
vtnr = session->vtnr;
exists = true;
b = dbus_message_append_args(
reply,
DBUS_TYPE_STRING, &session->id,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_STRING, &session->user->runtime_path,
DBUS_TYPE_UNIX_FD, &fifo_fd,
DBUS_TYPE_UINT32, &session->user->uid,
DBUS_TYPE_STRING, &cseat,
DBUS_TYPE_UINT32, &vtnr,
DBUS_TYPE_BOOLEAN, &exists,
DBUS_TYPE_INVALID);
if (!b) {
r = -ENOMEM;
goto fail;
}
if (!dbus_connection_send(m->bus, reply, NULL)) {
r = -ENOMEM;
goto fail;
}
return 0;
}
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) {
r = -ENOMEM;
goto fail;
}
/* Wut? There's already a session by this name and we
* didn't find it above? Weird, then let's not trust
* the audit data and let's better register a new
* ID */
if (hashmap_get(m->sessions, id)) {
log_warning("Existing logind session ID %s used by new audit session, ignoring", id);
audit_id = 0;
free(id);
id = NULL;
}
}
if (!id) {
do {
free(id);
id = NULL;
if (asprintf(&id, "c%lu", ++m->session_counter) < 0) {
r = -ENOMEM;
goto fail;
}
} 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 = dbus_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 0;
fail:
if (session)
session_add_to_gc_queue(session);
if (user)
user_add_to_gc_queue(user);
return r;
}
static int bus_manager_inhibit(
Manager *m,
DBusConnection *connection,
DBusMessage *message,
DBusError *error,
DBusMessage **_reply) {
Inhibitor *i = NULL;
char *id = NULL;
const char *who, *why, *what, *mode;
pid_t pid;
InhibitWhat w;
InhibitMode mm;
unsigned long ul;
int r, fifo_fd = -1;
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
assert(m);
assert(connection);
assert(message);
assert(error);
assert(_reply);
if (!dbus_message_get_args(
message,
error,
DBUS_TYPE_STRING, &what,
DBUS_TYPE_STRING, &who,
DBUS_TYPE_STRING, &why,
DBUS_TYPE_STRING, &mode,
DBUS_TYPE_INVALID)) {
r = -EIO;
goto fail;
}
w = inhibit_what_from_string(what);
if (w <= 0) {
r = -EINVAL;
goto fail;
}
mm = inhibit_mode_from_string(mode);
if (mm < 0) {
r = -EINVAL;
goto fail;
}
/* Delay is only supported for shutdown/sleep */
if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP))) {
r = -EINVAL;
goto fail;
}
/* 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) {
r = -EALREADY;
goto fail;
}
r = verify_polkit(connection, 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, NULL, error);
if (r < 0)
goto fail;
ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error);
if (ul == (unsigned long) -1) {
r = -EIO;
goto fail;
}
pid = bus_get_unix_process_id(connection, dbus_message_get_sender(message), error);
if (pid <= 0) {
r = -EIO;
goto fail;
}
do {
free(id);
id = NULL;
if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0) {
r = -ENOMEM;
goto fail;
}
} while (hashmap_get(m->inhibitors, id));
r = manager_add_inhibitor(m, id, &i);
free(id);
if (r < 0)
goto fail;
i->what = w;
i->mode = mm;
i->pid = pid;
i->uid = (uid_t) ul;
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;
}
reply = dbus_message_new_method_return(message);
if (!reply) {
r = -ENOMEM;
goto fail;
}
if (!dbus_message_append_args(
reply,
DBUS_TYPE_UNIX_FD, &fifo_fd,
DBUS_TYPE_INVALID)) {
r = -ENOMEM;
goto fail;
}
safe_close(fifo_fd);
*_reply = reply;
reply = NULL;
inhibitor_start(i);
return 0;
fail:
if (i)
inhibitor_free(i);
safe_close(fifo_fd);
return r;
}
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) {
char *t;
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");
free(t);
}
r = 0;
finish:
if (e)
udev_enumerate_unref(e);
return r;
}
static int attach_device(Manager *m, const char *seat, const char *sysfs) {
struct udev_device *d;
_cleanup_free_ char *rule = NULL, *file = NULL;
const char *id_for_seat;
int r;
assert(m);
assert(seat);
assert(sysfs);
d = udev_device_new_from_syspath(m->udev, sysfs);
if (!d)
return -ENODEV;
if (!udev_device_has_tag(d, "seat")) {
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 have_multiple_sessions(
Manager *m,
uid_t uid) {
Session *session;
Iterator i;
assert(m);
/* Check for other users' sessions. Greeter sessions do not
* count, and non-login sessions do not count either. */
HASHMAP_FOREACH(session, m->sessions, i)
if (session->class == SESSION_USER &&
!session->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,
DBusError *error) {
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
const char *mode = "replace-irreversibly", *p;
int r;
char *c;
assert(m);
assert(w >= 0);
assert(w < _INHIBIT_WHAT_MAX);
assert(unit_name);
bus_manager_log_shutdown(m, w, unit_name);
r = bus_method_call_with_reply(
m->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartUnit",
&reply,
error,
DBUS_TYPE_STRING, &unit_name,
DBUS_TYPE_STRING, &mode,
DBUS_TYPE_INVALID);
if (r < 0)
return r;
if (!dbus_message_get_args(
reply,
error,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID))
return -EINVAL;
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 bus_manager_can_shutdown_or_sleep(
Manager *m,
DBusConnection *connection,
DBusMessage *message,
InhibitWhat w,
const char *action,
const char *action_multiple_sessions,
const char *action_ignore_inhibit,
const char *sleep_verb,
DBusError *error,
DBusMessage **_reply) {
bool multiple_sessions, challenge, blocked, b;
const char *result = NULL;
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
int r;
unsigned long ul;
assert(m);
assert(connection);
assert(message);
assert(w >= 0);
assert(w <= _INHIBIT_WHAT_MAX);
assert(action);
assert(action_multiple_sessions);
assert(action_ignore_inhibit);
assert(error);
assert(_reply);
if (sleep_verb) {
r = can_sleep(sleep_verb);
if (r < 0)
return r;
if (r == 0) {
result = "na";
goto finish;
}
}
ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error);
if (ul == (unsigned long) -1)
return -EIO;
r = have_multiple_sessions(m, (uid_t) ul);
if (r < 0)
return r;
multiple_sessions = r > 0;
blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, (uid_t) ul);
if (multiple_sessions) {
r = verify_polkit(connection, 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 = verify_polkit(connection, 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
* apply then just check the normal policy */
r = verify_polkit(connection, message, action, false, &challenge, error);
if (r < 0)
return r;
if (r > 0)
result = "yes";
else if (challenge)
result = "challenge";
else
result = "no";
}
finish:
reply = dbus_message_new_method_return(message);
if (!reply)
return -ENOMEM;
b = dbus_message_append_args(
reply,
DBUS_TYPE_STRING, &result,
DBUS_TYPE_INVALID);
if (!b)
return -ENOMEM;
*_reply = reply;
reply = NULL;
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"
};
dbus_bool_t active = _active;
_cleanup_dbus_message_unref_ DBusMessage *message = NULL;
assert(m);
assert(w >= 0);
assert(w < _INHIBIT_WHAT_MAX);
assert(signal_name[w]);
message = dbus_message_new_signal("/org/freedesktop/login1", "org.freedesktop.login1.Manager", signal_name[w]);
if (!message)
return -ENOMEM;
if (!dbus_message_append_args(message, DBUS_TYPE_BOOLEAN, &active, DBUS_TYPE_INVALID) ||
!dbus_connection_send(m->bus, message, NULL))
return -ENOMEM;
return 0;
}
int bus_manager_shutdown_or_sleep_now_or_later(
Manager *m,
const char *unit_name,
InhibitWhat w,
DBusError *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);
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 bus_manager_do_shutdown_or_sleep(
Manager *m,
DBusConnection *connection,
DBusMessage *message,
const char *unit_name,
InhibitWhat w,
const char *action,
const char *action_multiple_sessions,
const char *action_ignore_inhibit,
const char *sleep_verb,
DBusError *error,
DBusMessage **_reply) {
dbus_bool_t interactive;
bool multiple_sessions, blocked;
DBusMessage *reply = NULL;
int r;
unsigned long ul;
assert(m);
assert(connection);
assert(message);
assert(unit_name);
assert(w >= 0);
assert(w <= _INHIBIT_WHAT_MAX);
assert(action);
assert(action_multiple_sessions);
assert(action_ignore_inhibit);
assert(error);
assert(_reply);
/* Don't allow multiple jobs being executed at the same time */
if (m->action_what)
return -EALREADY;
if (!dbus_message_get_args(
message,
error,
DBUS_TYPE_BOOLEAN, &interactive,
DBUS_TYPE_INVALID))
return -EINVAL;
if (sleep_verb) {
r = can_sleep(sleep_verb);
if (r < 0)
return r;
if (r == 0)
return -ENOTSUP;
}
ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error);
if (ul == (unsigned long) -1)
return -EIO;
r = have_multiple_sessions(m, (uid_t) ul);
if (r < 0)
return r;
multiple_sessions = r > 0;
blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, (uid_t) ul);
if (multiple_sessions) {
r = verify_polkit(connection, message, action_multiple_sessions, interactive, NULL, 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) {
r = verify_polkit(connection, message, action_ignore_inhibit, interactive, NULL, 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) {
r = verify_polkit(connection, message, action, interactive, NULL, 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 = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
if (r < 0)
return r;
reply = dbus_message_new_method_return(message);
if (!reply)
return -ENOMEM;
*_reply = reply;
return 0;
}
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_handle_action, handle_action, HandleAction);
static const BusProperty bus_login_manager_properties[] = {
{ "NAutoVTs", bus_property_append_unsigned, "u", offsetof(Manager, n_autovts) },
{ "KillOnlyUsers", bus_property_append_strv, "as", offsetof(Manager, kill_only_users), true },
{ "KillExcludeUsers", bus_property_append_strv, "as", offsetof(Manager, kill_exclude_users), true },
{ "KillUserProcesses", bus_property_append_bool, "b", offsetof(Manager, kill_user_processes) },
{ "IdleHint", bus_manager_append_idle_hint, "b", 0 },
{ "IdleSinceHint", bus_manager_append_idle_hint_since, "t", 0 },
{ "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", 0 },
{ "BlockInhibited", bus_manager_append_inhibited, "s", 0 },
{ "DelayInhibited", bus_manager_append_inhibited, "s", 0 },
{ "InhibitDelayMaxUSec", bus_property_append_usec, "t", offsetof(Manager, inhibit_delay_max) },
{ "HandlePowerKey", bus_manager_append_handle_action, "s", offsetof(Manager, handle_power_key) },
{ "HandleSuspendKey", bus_manager_append_handle_action, "s", offsetof(Manager, handle_suspend_key) },
{ "HandleHibernateKey", bus_manager_append_handle_action, "s", offsetof(Manager, handle_hibernate_key)},
{ "HandleLidSwitch", bus_manager_append_handle_action, "s", offsetof(Manager, handle_lid_switch) },
{ "IdleAction", bus_manager_append_handle_action, "s", offsetof(Manager, idle_action) },
{ "IdleActionUSec", bus_property_append_usec, "t", offsetof(Manager, idle_action_usec) },
{ "PreparingForShutdown", bus_manager_append_preparing, "b", 0 },
{ "PreparingForSleep", bus_manager_append_preparing, "b", 0 },
{ NULL, }
};
static DBusHandlerResult manager_message_handler(
DBusConnection *connection,
DBusMessage *message,
void *userdata) {
Manager *m = userdata;
DBusError error;
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
int r;
assert(connection);
assert(message);
assert(m);
dbus_error_init(&error);
if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSession")) {
const char *name;
char *p;
Session *session;
bool b;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
session = hashmap_get(m->sessions, name);
if (!session)
return bus_send_error_reply(connection, message, &error, -ENOENT);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
p = session_bus_path(session);
if (!p)
goto oom;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
free(p);
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSessionByPID")) {
uint32_t pid;
char *p;
Session *session;
bool b;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &pid,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
r = manager_get_session_by_pid(m, pid, &session);
if (r <= 0)
return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
p = session_bus_path(session);
if (!p)
goto oom;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
free(p);
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUser")) {
uint32_t uid;
char *p;
User *user;
bool b;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &uid,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
if (!user)
return bus_send_error_reply(connection, message, &error, -ENOENT);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
p = user_bus_path(user);
if (!p)
goto oom;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
free(p);
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUserByPID")) {
uint32_t pid;
char *p;
User *user;
bool b;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &pid,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
r = manager_get_user_by_pid(m, pid, &user);
if (r <= 0)
return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
p = user_bus_path(user);
if (!p)
goto oom;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
free(p);
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) {
const char *name;
char *p;
Seat *seat;
bool b;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
seat = hashmap_get(m->seats, name);
if (!seat)
return bus_send_error_reply(connection, message, &error, -ENOENT);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
p = seat_bus_path(seat);
if (!p)
goto oom;
b = dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &p,
DBUS_TYPE_INVALID);
free(p);
if (!b)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSessions")) {
char *p;
Session *session;
Iterator i;
DBusMessageIter iter, sub;
const char *empty = "";
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(susso)", &sub))
goto oom;
HASHMAP_FOREACH(session, m->sessions, i) {
DBusMessageIter sub2;
uint32_t uid;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
uid = session->user->uid;
p = session_bus_path(session);
if (!p)
goto oom;
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->user->name) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, session->seat ? (const char**) &session->seat->id : &empty) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
free(p);
goto oom;
}
free(p);
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) {
User *user;
Iterator i;
DBusMessageIter iter, sub;
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(uso)", &sub))
goto oom;
HASHMAP_FOREACH(user, m->users, i) {
_cleanup_free_ char *p = NULL;
DBusMessageIter sub2;
uint32_t uid;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
uid = user->uid;
p = user_bus_path(user);
if (!p)
goto oom;
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &user->name) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
free(p);
goto oom;
}
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) {
Seat *seat;
Iterator i;
DBusMessageIter iter, sub;
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(so)", &sub))
goto oom;
HASHMAP_FOREACH(seat, m->seats, i) {
_cleanup_free_ char *p = NULL;
DBusMessageIter sub2;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
p = seat_bus_path(seat);
if (!p)
goto oom;
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &seat->id) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
free(p);
goto oom;
}
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListInhibitors")) {
Inhibitor *inhibitor;
Iterator i;
DBusMessageIter iter, sub;
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssuu)", &sub))
goto oom;
HASHMAP_FOREACH(inhibitor, m->inhibitors, i) {
DBusMessageIter sub2;
dbus_uint32_t uid, pid;
const char *what, *who, *why, *mode;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
goto oom;
what = strempty(inhibit_what_to_string(inhibitor->what));
who = strempty(inhibitor->who);
why = strempty(inhibitor->why);
mode = strempty(inhibit_mode_to_string(inhibitor->mode));
uid = (dbus_uint32_t) inhibitor->uid;
pid = (dbus_uint32_t) inhibitor->pid;
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &what) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &who) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &why) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &mode) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &pid))
goto oom;
if (!dbus_message_iter_close_container(&sub, &sub2))
goto oom;
}
if (!dbus_message_iter_close_container(&iter, &sub))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Inhibit")) {
r = bus_manager_inhibit(m, connection, message, &error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateSession")) {
r = bus_manager_create_session(m, message);
/* Don't delay the work on OOM here, since it might be
* triggered by a low RLIMIT_NOFILE here (since we
* send a dupped fd to the client), and we'd rather
* see this fail quickly then be retried later */
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ReleaseSession")) {
const char *name;
Session *session;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
session = hashmap_get(m->sessions, name);
if (!session)
return bus_send_error_reply(connection, message, &error, -ENOENT);
session_release(session);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSession")) {
const char *name;
Session *session;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
session = hashmap_get(m->sessions, name);
if (!session)
return bus_send_error_reply(connection, message, &error, -ENOENT);
r = session_activate(session);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSessionOnSeat")) {
const char *session_name, *seat_name;
Session *session;
Seat *seat;
/* Same as ActivateSession() but refuses to work if
* the seat doesn't match */
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &session_name,
DBUS_TYPE_STRING, &seat_name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
session = hashmap_get(m->sessions, session_name);
if (!session)
return bus_send_error_reply(connection, message, &error, -ENOENT);
seat = hashmap_get(m->seats, seat_name);
if (!seat)
return bus_send_error_reply(connection, message, &error, -ENOENT);
if (session->seat != seat)
return bus_send_error_reply(connection, message, &error, -EINVAL);
r = session_activate(session);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSession") ||
dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "UnlockSession")) {
const char *name;
Session *session;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
session = hashmap_get(m->sessions, name);
if (!session)
return bus_send_error_reply(connection, message, NULL, -ENOENT);
if (session_send_lock(session, streq(dbus_message_get_member(message), "LockSession")) < 0)
goto oom;
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSessions") ||
dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "UnlockSessions")) {
r = session_send_lock_all(m, streq(dbus_message_get_member(message), "LockSessions"));
if (r < 0)
bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillSession")) {
const char *swho;
int32_t signo;
KillWho who;
const char *name;
Session *session;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &swho,
DBUS_TYPE_INT32, &signo,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (isempty(swho))
who = KILL_ALL;
else {
who = kill_who_from_string(swho);
if (who < 0)
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
if (signo <= 0 || signo >= _NSIG)
return bus_send_error_reply(connection, message, &error, -EINVAL);
session = hashmap_get(m->sessions, name);
if (!session)
return bus_send_error_reply(connection, message, &error, -ENOENT);
r = session_kill(session, who, signo);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillUser")) {
uint32_t uid;
User *user;
int32_t signo;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &uid,
DBUS_TYPE_INT32, &signo,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (signo <= 0 || signo >= _NSIG)
return bus_send_error_reply(connection, message, &error, -EINVAL);
user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
if (!user)
return bus_send_error_reply(connection, message, &error, -ENOENT);
r = user_kill(user, signo);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSession")) {
const char *name;
Session *session;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
session = hashmap_get(m->sessions, name);
if (!session)
return bus_send_error_reply(connection, message, &error, -ENOENT);
r = session_stop(session);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateUser")) {
uint32_t uid;
User *user;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &uid,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
if (!user)
return bus_send_error_reply(connection, message, &error, -ENOENT);
r = user_stop(user);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSeat")) {
const char *name;
Seat *seat;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
seat = hashmap_get(m->seats, name);
if (!seat)
return bus_send_error_reply(connection, message, &error, -ENOENT);
r = seat_stop_sessions(seat);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, r);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "SetUserLinger")) {
uint32_t uid;
struct passwd *pw;
dbus_bool_t b, interactive;
char *path;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &uid,
DBUS_TYPE_BOOLEAN, &b,
DBUS_TYPE_BOOLEAN, &interactive,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
errno = 0;
pw = getpwuid(uid);
if (!pw)
return bus_send_error_reply(connection, message, NULL, errno ? -errno : -EINVAL);
r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
mkdir_p_label("/var/lib/systemd", 0755);
r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
path = strappend("/var/lib/systemd/linger/", pw->pw_name);
if (!path)
goto oom;
if (b) {
User *u;
r = touch(path);
free(path);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
if (manager_add_user_by_uid(m, uid, &u) >= 0)
user_start(u);
} else {
User *u;
r = unlink(path);
free(path);
if (r < 0 && errno != ENOENT)
return bus_send_error_reply(connection, message, &error, -errno);
u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid));
if (u)
user_add_to_gc_queue(u);
}
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "AttachDevice")) {
const char *sysfs, *seat;
dbus_bool_t interactive;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &seat,
DBUS_TYPE_STRING, &sysfs,
DBUS_TYPE_BOOLEAN, &interactive,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (!path_startswith(sysfs, "/sys") || !seat_name_is_valid(seat))
return bus_send_error_reply(connection, message, NULL, -EINVAL);
r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
r = attach_device(m, seat, sysfs);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, -EINVAL);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "FlushDevices")) {
dbus_bool_t interactive;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_BOOLEAN, &interactive,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
r = flush_devices(m);
if (r < 0)
return bus_send_error_reply(connection, message, NULL, -EINVAL);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "PowerOff")) {
r = bus_manager_do_shutdown_or_sleep(
m, connection, message,
SPECIAL_POWEROFF_TARGET,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.power-off",
"org.freedesktop.login1.power-off-multiple-sessions",
"org.freedesktop.login1.power-off-ignore-inhibit",
NULL,
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Reboot")) {
r = bus_manager_do_shutdown_or_sleep(
m, connection, message,
SPECIAL_REBOOT_TARGET,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.reboot",
"org.freedesktop.login1.reboot-multiple-sessions",
"org.freedesktop.login1.reboot-ignore-inhibit",
NULL,
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Suspend")) {
r = bus_manager_do_shutdown_or_sleep(
m, connection, message,
SPECIAL_SUSPEND_TARGET,
INHIBIT_SLEEP,
"org.freedesktop.login1.suspend",
"org.freedesktop.login1.suspend-multiple-sessions",
"org.freedesktop.login1.suspend-ignore-inhibit",
"suspend",
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Hibernate")) {
r = bus_manager_do_shutdown_or_sleep(
m, connection, message,
SPECIAL_HIBERNATE_TARGET,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
"hibernate",
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "HybridSleep")) {
r = bus_manager_do_shutdown_or_sleep(
m, connection, message,
SPECIAL_HYBRID_SLEEP_TARGET,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
"hybrid-sleep",
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanPowerOff")) {
r = bus_manager_can_shutdown_or_sleep(
m, connection, message,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.power-off",
"org.freedesktop.login1.power-off-multiple-sessions",
"org.freedesktop.login1.power-off-ignore-inhibit",
NULL,
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanReboot")) {
r = bus_manager_can_shutdown_or_sleep(
m, connection, message,
INHIBIT_SHUTDOWN,
"org.freedesktop.login1.reboot",
"org.freedesktop.login1.reboot-multiple-sessions",
"org.freedesktop.login1.reboot-ignore-inhibit",
NULL,
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanSuspend")) {
r = bus_manager_can_shutdown_or_sleep(
m, connection, message,
INHIBIT_SLEEP,
"org.freedesktop.login1.suspend",
"org.freedesktop.login1.suspend-multiple-sessions",
"org.freedesktop.login1.suspend-ignore-inhibit",
"suspend",
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanHibernate")) {
r = bus_manager_can_shutdown_or_sleep(
m, connection, message,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
"hibernate",
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanHybridSleep")) {
r = bus_manager_can_shutdown_or_sleep(
m, connection, message,
INHIBIT_SLEEP,
"org.freedesktop.login1.hibernate",
"org.freedesktop.login1.hibernate-multiple-sessions",
"org.freedesktop.login1.hibernate-ignore-inhibit",
"hybrid-sleep",
&error, &reply);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
char *introspection = NULL;
FILE *f;
Iterator i;
Session *session;
Seat *seat;
User *user;
size_t size;
char *p;
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
/* We roll our own introspection code here, instead of
* relying on bus_default_message_handler() because we
* need to generate our introspection string
* dynamically. */
if (!(f = open_memstream(&introspection, &size)))
goto oom;
fputs(INTROSPECTION_BEGIN, f);
HASHMAP_FOREACH(seat, m->seats, i) {
p = bus_path_escape(seat->id);
if (p) {
fprintf(f, "<node name=\"seat/%s\"/>", p);
free(p);
}
}
HASHMAP_FOREACH(user, m->users, i)
fprintf(f, "<node name=\"user/_%llu\"/>", (unsigned long long) user->uid);
HASHMAP_FOREACH(session, m->sessions, i) {
p = bus_path_escape(session->id);
if (p) {
fprintf(f, "<node name=\"session/%s\"/>", p);
free(p);
}
}
fputs(INTROSPECTION_END, f);
if (ferror(f)) {
fclose(f);
free(introspection);
goto oom;
}
fclose(f);
if (!introspection)
goto oom;
if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
free(introspection);
goto oom;
}
free(introspection);
} else {
const BusBoundProperties bps[] = {
{ "org.freedesktop.login1.Manager", bus_login_manager_properties, m },
{ NULL, }
};
return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps);
}
if (reply) {
if (!bus_maybe_send_reply(connection, message, reply))
goto oom;
}
return DBUS_HANDLER_RESULT_HANDLED;
oom:
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NEED_MEMORY;
}
const DBusObjectPathVTable bus_manager_vtable = {
.message_function = manager_message_handler
};
DBusHandlerResult bus_message_filter(
DBusConnection *connection,
DBusMessage *message,
void *userdata) {
Manager *m = userdata;
DBusError error;
assert(m);
assert(connection);
assert(message);
dbus_error_init(&error);
log_debug("Got message: %s %s %s", strna(dbus_message_get_sender(message)), strna(dbus_message_get_interface(message)), strna(dbus_message_get_member(message)));
if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
const char *path, *result, *unit;
uint32_t id;
if (!dbus_message_get_args(message, &error,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_STRING, &unit,
DBUS_TYPE_STRING, &result,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse JobRemoved message: %s", bus_error_message(&error));
goto finish;
}
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;
} else {
Session *s;
User *u;
s = hashmap_get(m->session_units, unit);
if (s) {
if (streq_ptr(path, s->scope_job)) {
free(s->scope_job);
s->scope_job = NULL;
if (s->started) {
if (streq(result, "done"))
session_send_create_reply(s, NULL);
else {
dbus_set_error(&error, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
session_send_create_reply(s, &error);
}
} else
session_save(s);
}
session_add_to_gc_queue(s);
}
u = hashmap_get(m->user_units, unit);
if (u) {
if (streq_ptr(path, u->service_job)) {
free(u->service_job);
u->service_job = NULL;
}
if (streq_ptr(path, u->slice_job)) {
free(u->slice_job);
u->slice_job = NULL;
}
user_save(u);
user_add_to_gc_queue(u);
}
}
} else if (dbus_message_is_signal(message, "org.freedesktop.DBus.Properties", "PropertiesChanged")) {
_cleanup_free_ char *unit = NULL;
const char *path;
path = dbus_message_get_path(message);
if (!path)
goto finish;
unit_name_from_dbus_path(path, &unit);
if (unit) {
Session *s;
User *u;
s = hashmap_get(m->session_units, unit);
if (s)
session_add_to_gc_queue(s);
u = hashmap_get(m->user_units, unit);
if (u)
user_add_to_gc_queue(u);
}
} else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitRemoved")) {
const char *path, *unit;
Session *session;
User *user;
if (!dbus_message_get_args(message, &error,
DBUS_TYPE_STRING, &unit,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse UnitRemoved message: %s", bus_error_message(&error));
goto finish;
}
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);
} else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "Reloading")) {
dbus_bool_t b;
if (!dbus_message_get_args(message, &error,
DBUS_TYPE_BOOLEAN, &b,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse Reloading message: %s", bus_error_message(&error));
goto finish;
}
/* systemd finished reloading, let's recheck all our sessions */
if (!b) {
Session *session;
Iterator i;
log_debug("System manager has been reloaded, rechecking sessions...");
HASHMAP_FOREACH(session, m->sessions, i)
session_add_to_gc_queue(session);
}
} else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) {
const char *name, *old, *new;
char *key;
if (!dbus_message_get_args(message, &error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &old,
DBUS_TYPE_STRING, &new,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse NameOwnerChanged message: %s", bus_error_message(&error));
goto finish;
}
/* drop all controllers owned by this name */
if (*old && !*new && (key = hashmap_remove(m->busnames, old))) {
Session *session;
Iterator i;
free(key);
HASHMAP_FOREACH(session, m->sessions, i)
if (session_is_controller(session, old))
session_drop_controller(session);
}
}
finish:
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
int manager_send_changed(Manager *manager, const char *properties) {
_cleanup_dbus_message_unref_ DBusMessage *m = NULL;
assert(manager);
m = bus_properties_changed_new("/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
properties);
if (!m)
return -ENOMEM;
if (!dbus_connection_send(manager->bus, m, NULL))
return -ENOMEM;
return 0;
}
int manager_dispatch_delayed(Manager *manager) {
DBusError error;
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)) {
if (manager->action_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC))
return 0;
log_info("Delay lock is active but inhibitor timeout is reached.");
}
/* Actually do the operation */
dbus_error_init(&error);
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(&error, r));
dbus_error_free(&error);
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 *after2,
DBusError *error,
char **job) {
const char *send_sighup_property = "SendSIGHUP", *pids_property = "PIDs", *after_property = "After";
_cleanup_dbus_message_unref_ DBusMessage *m = NULL, *reply = NULL;
DBusMessageIter iter, sub, sub2, sub3, sub4;
dbus_bool_t send_sighup = true;
const char *fail = "fail";
uint32_t u;
assert(manager);
assert(scope);
assert(pid > 1);
if (!slice)
slice = "";
m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartTransientUnit");
if (!m)
return log_oom();
dbus_message_iter_init_append(m, &iter);
if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &scope) ||
!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &fail) ||
!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sv)", &sub))
return log_oom();
if (!isempty(slice)) {
const char *slice_property = "Slice";
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &slice_property) ||
!dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "s", &sub3) ||
!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &slice) ||
!dbus_message_iter_close_container(&sub2, &sub3) ||
!dbus_message_iter_close_container(&sub, &sub2))
return log_oom();
}
if (!isempty(description)) {
const char *description_property = "Description";
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description_property) ||
!dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "s", &sub3) ||
!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &description) ||
!dbus_message_iter_close_container(&sub2, &sub3) ||
!dbus_message_iter_close_container(&sub, &sub2))
return log_oom();
}
if (!isempty(after)) {
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &after_property) ||
!dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "as", &sub3) ||
!dbus_message_iter_open_container(&sub3, DBUS_TYPE_ARRAY, "s", &sub4) ||
!dbus_message_iter_append_basic(&sub4, DBUS_TYPE_STRING, &after) ||
!dbus_message_iter_close_container(&sub3, &sub4) ||
!dbus_message_iter_close_container(&sub2, &sub3) ||
!dbus_message_iter_close_container(&sub, &sub2))
return log_oom();
}
if (!isempty(after2)) {
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &after_property) ||
!dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "as", &sub3) ||
!dbus_message_iter_open_container(&sub3, DBUS_TYPE_ARRAY, "s", &sub4) ||
!dbus_message_iter_append_basic(&sub4, DBUS_TYPE_STRING, &after2) ||
!dbus_message_iter_close_container(&sub3, &sub4) ||
!dbus_message_iter_close_container(&sub2, &sub3) ||
!dbus_message_iter_close_container(&sub, &sub2))
return log_oom();
}
/* cgroup empty notification is not available in containers
* currently. To make this less problematic, let's shorten the
* stop timeout for sessions, so that we don't wait
* forever. */
/* Make sure that the session shells are terminated with
* SIGHUP since bash and friends tend to ignore SIGTERM */
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &send_sighup_property) ||
!dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "b", &sub3) ||
!dbus_message_iter_append_basic(&sub3, DBUS_TYPE_BOOLEAN, &send_sighup) ||
!dbus_message_iter_close_container(&sub2, &sub3) ||
!dbus_message_iter_close_container(&sub, &sub2))
return log_oom();
u = pid;
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) ||
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &pids_property) ||
!dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "au", &sub3) ||
!dbus_message_iter_open_container(&sub3, DBUS_TYPE_ARRAY, "u", &sub4) ||
!dbus_message_iter_append_basic(&sub4, DBUS_TYPE_UINT32, &u) ||
!dbus_message_iter_close_container(&sub3, &sub4) ||
!dbus_message_iter_close_container(&sub2, &sub3) ||
!dbus_message_iter_close_container(&sub, &sub2))
return log_oom();
if (!dbus_message_iter_close_container(&iter, &sub))
return log_oom();
reply = dbus_connection_send_with_reply_and_block(manager->bus, m, -1, error);
if (!reply)
return -EIO;
if (job) {
const char *j;
char *copy;
if (!dbus_message_get_args(reply, error, DBUS_TYPE_OBJECT_PATH, &j, DBUS_TYPE_INVALID))
return -EIO;
copy = strdup(j);
if (!copy)
return -ENOMEM;
*job = copy;
}
return 0;
}
int manager_start_unit(Manager *manager, const char *unit, DBusError *error, char **job) {
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
const char *fail = "fail";
int r;
assert(manager);
assert(unit);
r = bus_method_call_with_reply(
manager->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StartUnit",
&reply,
error,
DBUS_TYPE_STRING, &unit,
DBUS_TYPE_STRING, &fail,
DBUS_TYPE_INVALID);
if (r < 0) {
log_error("Failed to start unit %s: %s", unit, bus_error(error, r));
return r;
}
if (job) {
const char *j;
char *copy;
if (!dbus_message_get_args(reply, error,
DBUS_TYPE_OBJECT_PATH, &j,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply.");
return -EIO;
}
copy = strdup(j);
if (!copy)
return -ENOMEM;
*job = copy;
}
return 0;
}
int manager_stop_unit(Manager *manager, const char *unit, DBusError *error, char **job) {
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
const char *fail = "fail";
int r;
assert(manager);
assert(unit);
r = bus_method_call_with_reply(
manager->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"StopUnit",
&reply,
error,
DBUS_TYPE_STRING, &unit,
DBUS_TYPE_STRING, &fail,
DBUS_TYPE_INVALID);
if (r < 0) {
if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
if (job)
*job = NULL;
dbus_error_free(error);
return 0;
}
log_error("Failed to stop unit %s: %s", unit, bus_error(error, r));
return r;
}
if (job) {
const char *j;
char *copy;
if (!dbus_message_get_args(reply, error,
DBUS_TYPE_OBJECT_PATH, &j,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply.");
return -EIO;
}
copy = strdup(j);
if (!copy)
return -ENOMEM;
*job = copy;
}
return 1;
}
int manager_abandon_scope(Manager *manager, const char *scope, DBusError *error) {
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
_cleanup_free_ char *path = NULL;
int r;
assert(manager);
assert(scope);
path = unit_dbus_path_from_name(scope);
if (!path)
return -ENOMEM;
r = bus_method_call_with_reply(
manager->bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Scope",
"Abandon",
&reply,
error,
DBUS_TYPE_INVALID);
if (r < 0) {
log_error("Failed to abandon scope %s", scope);
return r;
}
return 1;
}
int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, DBusError *error) {
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
const char *w;
int r;
assert(manager);
assert(unit);
w = who == KILL_LEADER ? "control" : "all";
assert_cc(sizeof(signo) == sizeof(int32_t));
r = bus_method_call_with_reply(
manager->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"KillUnit",
&reply,
error,
DBUS_TYPE_STRING, &unit,
DBUS_TYPE_STRING, &w,
DBUS_TYPE_INT32, &signo,
DBUS_TYPE_INVALID);
if (r < 0) {
log_error("Failed to kill unit %s: %s", unit, bus_error(error, r));
return r;
}
return 0;
}
int manager_unit_is_active(Manager *manager, const char *unit) {
const char *interface = "org.freedesktop.systemd1.Unit";
const char *property = "ActiveState";
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
_cleanup_free_ char *path = NULL;
DBusMessageIter iter, sub;
const char *state;
DBusError error;
int r;
assert(manager);
assert(unit);
dbus_error_init(&error);
path = unit_dbus_path_from_name(unit);
if (!path)
return -ENOMEM;
r = bus_method_call_with_reply(
manager->bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"Get",
&reply,
&error,
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_STRING, &property,
DBUS_TYPE_INVALID);
if (r < 0) {
if (dbus_error_has_name(&error, DBUS_ERROR_NO_REPLY) ||
dbus_error_has_name(&error, DBUS_ERROR_DISCONNECTED)) {
/* systemd might have droppped off
* momentarily, let's not make this an
* error */
dbus_error_free(&error);
return true;
}
if (dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
dbus_error_has_name(&error, BUS_ERROR_LOAD_FAILED)) {
/* If the unit is already unloaded then it's
* not active */
dbus_error_free(&error);
return false;
}
log_error("Failed to query ActiveState: %s", bus_error(&error, r));
dbus_error_free(&error);
return r;
}
if (!dbus_message_iter_init(reply, &iter) ||
dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
log_error("Failed to parse reply.");
return -EINVAL;
}
dbus_message_iter_recurse(&iter, &sub);
if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
log_error("Failed to parse reply.");
return -EINVAL;
}
dbus_message_iter_get_basic(&sub, &state);
return !streq(state, "inactive") && !streq(state, "failed");
}