diff options
Diffstat (limited to 'src/login/logind-dbus.c')
| -rw-r--r-- | src/login/logind-dbus.c | 3169 |
1 files changed, 0 insertions, 3169 deletions
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c deleted file mode 100644 index 0a84d75e24..0000000000 --- a/src/login/logind-dbus.c +++ /dev/null @@ -1,3169 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2011 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <pwd.h> -#include <string.h> -#include <unistd.h> - -#include "sd-messages.h" - -#include "alloc-util.h" -#include "audit-util.h" -#include "bus-common-errors.h" -#include "bus-error.h" -#include "bus-util.h" -#include "dirent-util.h" -#include "efivars.h" -#include "escape.h" -#include "fd-util.h" -#include "fileio-label.h" -#include "formats-util.h" -#include "fs-util.h" -#include "logind.h" -#include "mkdir.h" -#include "path-util.h" -#include "process-util.h" -#include "selinux-util.h" -#include "sleep-config.h" -#include "special.h" -#include "strv.h" -#include "terminal-util.h" -#include "udev-util.h" -#include "unit-name.h" -#include "user-util.h" -#include "utmp-wtmp.h" - -int manager_get_session_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Session **ret) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - Session *session; - int r; - - assert(m); - assert(message); - assert(ret); - - if (isempty(name)) { - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_session(creds, &name); - if (r < 0) - return r; - } - - session = hashmap_get(m->sessions, name); - if (!session) - return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name); - - *ret = session; - return 0; -} - -int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) { - User *user; - int r; - - assert(m); - assert(message); - assert(ret); - - if (uid == UID_INVALID) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - - /* Note that we get the owner UID of the session, not the actual client UID here! */ - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_owner_uid(creds, &uid); - if (r < 0) - return r; - } - - user = hashmap_get(m->users, UID_TO_PTR(uid)); - if (!user) - return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user "UID_FMT" known or logged in", uid); - - *ret = user; - return 0; -} - -int manager_get_seat_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Seat **ret) { - Seat *seat; - int r; - - assert(m); - assert(message); - assert(ret); - - if (isempty(name)) { - Session *session; - - r = manager_get_session_from_creds(m, message, NULL, error, &session); - if (r < 0) - return r; - - seat = session->seat; - if (!seat) - return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session has no seat."); - } else { - seat = hashmap_get(m->seats, name); - if (!seat) - return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name); - } - - *ret = seat; - return 0; -} - -static int property_get_idle_hint( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Manager *m = userdata; - - assert(bus); - assert(reply); - assert(m); - - return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0); -} - -static int property_get_idle_since_hint( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Manager *m = userdata; - dual_timestamp t = DUAL_TIMESTAMP_NULL; - - assert(bus); - assert(reply); - assert(m); - - manager_get_idle_hint(m, &t); - - return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic); -} - -static int property_get_inhibited( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Manager *m = userdata; - InhibitWhat w; - - assert(bus); - assert(reply); - assert(m); - - w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY); - - return sd_bus_message_append(reply, "s", inhibit_what_to_string(w)); -} - -static int property_get_preparing( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Manager *m = userdata; - bool b; - - assert(bus); - assert(reply); - assert(m); - - if (streq(property, "PreparingForShutdown")) - b = !!(m->action_what & INHIBIT_SHUTDOWN); - else - b = !!(m->action_what & INHIBIT_SLEEP); - - return sd_bus_message_append(reply, "b", b); -} - -static int property_get_scheduled_shutdown( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Manager *m = userdata; - int r; - - assert(bus); - assert(reply); - assert(m); - - r = sd_bus_message_open_container(reply, 'r', "st"); - if (r < 0) - return r; - - r = sd_bus_message_append(reply, "st", m->scheduled_shutdown_type, m->scheduled_shutdown_timeout); - if (r < 0) - return r; - - return sd_bus_message_close_container(reply); -} - -static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction); - -static int property_get_docked( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Manager *m = userdata; - - assert(bus); - assert(reply); - assert(m); - - return sd_bus_message_append(reply, "b", manager_is_docked_or_external_displays(m)); -} - -static int property_get_current_sessions( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Manager *m = userdata; - - assert(bus); - assert(reply); - assert(m); - - return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->sessions)); -} - -static int property_get_current_inhibitors( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - - Manager *m = userdata; - - assert(bus); - assert(reply); - assert(m); - - return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->inhibitors)); -} - -static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_free_ char *p = NULL; - Manager *m = userdata; - const char *name; - Session *session; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "s", &name); - if (r < 0) - return r; - - r = manager_get_session_from_creds(m, message, name, error, &session); - if (r < 0) - return r; - - p = session_bus_path(session); - if (!p) - return -ENOMEM; - - return sd_bus_reply_method_return(message, "o", p); -} - -static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_free_ char *p = NULL; - Session *session = NULL; - Manager *m = userdata; - pid_t pid; - int r; - - assert(message); - assert(m); - - assert_cc(sizeof(pid_t) == sizeof(uint32_t)); - - r = sd_bus_message_read(message, "u", &pid); - if (r < 0) - return r; - if (pid < 0) - return -EINVAL; - - if (pid == 0) { - r = manager_get_session_from_creds(m, message, NULL, error, &session); - if (r < 0) - return r; - } else { - r = manager_get_session_by_pid(m, pid, &session); - if (r < 0) - return r; - - if (!session) - return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID, "PID "PID_FMT" does not belong to any known session", pid); - } - - p = session_bus_path(session); - if (!p) - return -ENOMEM; - - return sd_bus_reply_method_return(message, "o", p); -} - -static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_free_ char *p = NULL; - Manager *m = userdata; - uint32_t uid; - User *user; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "u", &uid); - if (r < 0) - return r; - - r = manager_get_user_from_creds(m, message, uid, error, &user); - if (r < 0) - return r; - - p = user_bus_path(user); - if (!p) - return -ENOMEM; - - return sd_bus_reply_method_return(message, "o", p); -} - -static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_free_ char *p = NULL; - Manager *m = userdata; - User *user = NULL; - pid_t pid; - int r; - - assert(message); - assert(m); - - assert_cc(sizeof(pid_t) == sizeof(uint32_t)); - - r = sd_bus_message_read(message, "u", &pid); - if (r < 0) - return r; - if (pid < 0) - return -EINVAL; - - if (pid == 0) { - r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user); - if (r < 0) - return r; - } else { - r = manager_get_user_by_pid(m, pid, &user); - if (r < 0) - return r; - if (!user) - return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID, "PID "PID_FMT" does not belong to any known or logged in user", pid); - } - - p = user_bus_path(user); - if (!p) - return -ENOMEM; - - return sd_bus_reply_method_return(message, "o", p); -} - -static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_free_ char *p = NULL; - Manager *m = userdata; - const char *name; - Seat *seat; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "s", &name); - if (r < 0) - return r; - - r = manager_get_seat_from_creds(m, message, name, error, &seat); - if (r < 0) - return r; - - p = seat_bus_path(seat); - if (!p) - return -ENOMEM; - - return sd_bus_reply_method_return(message, "o", p); -} - -static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - Manager *m = userdata; - Session *session; - Iterator i; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_new_method_return(message, &reply); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'a', "(susso)"); - if (r < 0) - return r; - - HASHMAP_FOREACH(session, m->sessions, i) { - _cleanup_free_ char *p = NULL; - - p = session_bus_path(session); - if (!p) - return -ENOMEM; - - r = sd_bus_message_append(reply, "(susso)", - session->id, - (uint32_t) session->user->uid, - session->user->name, - session->seat ? session->seat->id : "", - p); - if (r < 0) - return r; - } - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - return sd_bus_send(NULL, reply, NULL); -} - -static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - Manager *m = userdata; - User *user; - Iterator i; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_new_method_return(message, &reply); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'a', "(uso)"); - if (r < 0) - return r; - - HASHMAP_FOREACH(user, m->users, i) { - _cleanup_free_ char *p = NULL; - - p = user_bus_path(user); - if (!p) - return -ENOMEM; - - r = sd_bus_message_append(reply, "(uso)", - (uint32_t) user->uid, - user->name, - p); - if (r < 0) - return r; - } - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - return sd_bus_send(NULL, reply, NULL); -} - -static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - Manager *m = userdata; - Seat *seat; - Iterator i; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_new_method_return(message, &reply); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'a', "(so)"); - if (r < 0) - return r; - - HASHMAP_FOREACH(seat, m->seats, i) { - _cleanup_free_ char *p = NULL; - - p = seat_bus_path(seat); - if (!p) - return -ENOMEM; - - r = sd_bus_message_append(reply, "(so)", seat->id, p); - if (r < 0) - return r; - } - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - return sd_bus_send(NULL, reply, NULL); -} - -static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - Manager *m = userdata; - Inhibitor *inhibitor; - Iterator i; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_new_method_return(message, &reply); - if (r < 0) - return r; - - r = sd_bus_message_open_container(reply, 'a', "(ssssuu)"); - if (r < 0) - return r; - - HASHMAP_FOREACH(inhibitor, m->inhibitors, i) { - - r = sd_bus_message_append(reply, "(ssssuu)", - strempty(inhibit_what_to_string(inhibitor->what)), - strempty(inhibitor->who), - strempty(inhibitor->why), - strempty(inhibit_mode_to_string(inhibitor->mode)), - (uint32_t) inhibitor->uid, - (uint32_t) inhibitor->pid); - if (r < 0) - return r; - } - - r = sd_bus_message_close_container(reply); - if (r < 0) - return r; - - return sd_bus_send(NULL, reply, NULL); -} - -static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) { - const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop; - uint32_t audit_id = 0; - _cleanup_free_ char *id = NULL; - Session *session = NULL; - Manager *m = userdata; - User *user = NULL; - Seat *seat = NULL; - pid_t leader; - uid_t uid; - int remote; - uint32_t vtnr = 0; - SessionType t; - SessionClass c; - int r; - - assert(message); - assert(m); - - assert_cc(sizeof(pid_t) == sizeof(uint32_t)); - assert_cc(sizeof(uid_t) == sizeof(uint32_t)); - - r = sd_bus_message_read(message, "uusssssussbss", &uid, &leader, &service, &type, &class, &desktop, &cseat, &vtnr, &tty, &display, &remote, &remote_user, &remote_host); - if (r < 0) - return r; - - if (!uid_is_valid(uid)) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID"); - if (leader < 0 || leader == 1) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID"); - - if (isempty(type)) - t = _SESSION_TYPE_INVALID; - else { - t = session_type_from_string(type); - if (t < 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session type %s", type); - } - - if (isempty(class)) - c = _SESSION_CLASS_INVALID; - else { - c = session_class_from_string(class); - if (c < 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session class %s", class); - } - - if (isempty(desktop)) - desktop = NULL; - else { - if (!string_is_safe(desktop)) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid desktop string %s", desktop); - } - - if (isempty(cseat)) - seat = NULL; - else { - seat = hashmap_get(m->seats, cseat); - if (!seat) - return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", cseat); - } - - if (tty_is_vc(tty)) { - int v; - - if (!seat) - seat = m->seat0; - else if (seat != m->seat0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "TTY %s is virtual console but seat %s is not seat0", tty, seat->id); - - v = vtnr_from_tty(tty); - if (v <= 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot determine VT number from virtual console TTY %s", tty); - - if (!vtnr) - vtnr = (uint32_t) v; - else if (vtnr != (uint32_t) v) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified TTY and VT number do not match"); - - } else if (tty_is_console(tty)) { - - if (!seat) - seat = m->seat0; - else if (seat != m->seat0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but seat is not seat0"); - - if (vtnr != 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but VT number is not 0"); - } - - if (seat) { - if (seat_has_vts(seat)) { - if (!vtnr || vtnr > 63) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "VT number out of range"); - } else { - if (vtnr != 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat has no VTs but VT number not 0"); - } - } - - r = sd_bus_message_enter_container(message, 'a', "(sv)"); - if (r < 0) - return r; - - if (t == _SESSION_TYPE_INVALID) { - if (!isempty(display)) - t = SESSION_X11; - else if (!isempty(tty)) - t = SESSION_TTY; - else - t = SESSION_UNSPECIFIED; - } - - if (c == _SESSION_CLASS_INVALID) { - if (t == SESSION_UNSPECIFIED) - c = SESSION_BACKGROUND; - else - c = SESSION_USER; - } - - if (leader == 0) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_pid(creds, (pid_t*) &leader); - if (r < 0) - return r; - } - - r = manager_get_session_by_pid(m, leader, NULL); - if (r > 0) - return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already running in a session"); - - /* - * Old gdm and lightdm start the user-session on the same VT as - * the greeter session. But they destroy the greeter session - * after the user-session and want the user-session to take - * over the VT. We need to support this for - * backwards-compatibility, so make sure we allow new sessions - * on a VT that a greeter is running on. Furthermore, to allow - * re-logins, we have to allow a greeter to take over a used VT for - * the exact same reasons. - */ - if (c != SESSION_GREETER && - vtnr > 0 && - vtnr < m->seat0->position_count && - m->seat0->positions[vtnr] && - m->seat0->positions[vtnr]->class != SESSION_GREETER) - return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session"); - - if (hashmap_size(m->sessions) >= m->sessions_max) - return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.", m->sessions_max); - - audit_session_from_pid(leader, &audit_id); - if (audit_id > 0) { - /* Keep our session IDs and the audit session IDs in sync */ - - if (asprintf(&id, "%"PRIu32, audit_id) < 0) - return -ENOMEM; - - /* Wut? There's already a session by this name and we - * didn't find it above? Weird, then let's not trust - * the audit data and let's better register a new - * ID */ - if (hashmap_get(m->sessions, id)) { - log_warning("Existing logind session ID %s used by new audit session, ignoring", id); - audit_id = 0; - - id = mfree(id); - } - } - - if (!id) { - do { - id = mfree(id); - - if (asprintf(&id, "c%lu", ++m->session_counter) < 0) - return -ENOMEM; - - } while (hashmap_get(m->sessions, id)); - } - - r = manager_add_user_by_uid(m, uid, &user); - if (r < 0) - goto fail; - - r = manager_add_session(m, id, &session); - if (r < 0) - goto fail; - - session_set_user(session, user); - - session->leader = leader; - session->audit_id = audit_id; - session->type = t; - session->class = c; - session->remote = remote; - session->vtnr = vtnr; - - if (!isempty(tty)) { - session->tty = strdup(tty); - if (!session->tty) { - r = -ENOMEM; - goto fail; - } - } - - if (!isempty(display)) { - session->display = strdup(display); - if (!session->display) { - r = -ENOMEM; - goto fail; - } - } - - if (!isempty(remote_user)) { - session->remote_user = strdup(remote_user); - if (!session->remote_user) { - r = -ENOMEM; - goto fail; - } - } - - if (!isempty(remote_host)) { - session->remote_host = strdup(remote_host); - if (!session->remote_host) { - r = -ENOMEM; - goto fail; - } - } - - if (!isempty(service)) { - session->service = strdup(service); - if (!session->service) { - r = -ENOMEM; - goto fail; - } - } - - if (!isempty(desktop)) { - session->desktop = strdup(desktop); - if (!session->desktop) { - r = -ENOMEM; - goto fail; - } - } - - if (seat) { - r = seat_attach_session(seat, session); - if (r < 0) - goto fail; - } - - r = session_start(session); - if (r < 0) - goto fail; - - session->create_message = sd_bus_message_ref(message); - - /* Now, let's wait until the slice unit and stuff got - * created. We send the reply back from - * session_send_create_reply(). */ - - return 1; - -fail: - if (session) - session_add_to_gc_queue(session); - - if (user) - user_add_to_gc_queue(user); - - return r; -} - -static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - Session *session; - const char *name; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "s", &name); - if (r < 0) - return r; - - r = manager_get_session_from_creds(m, message, name, error, &session); - if (r < 0) - return r; - - r = session_release(session); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - Session *session; - const char *name; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "s", &name); - if (r < 0) - return r; - - r = manager_get_session_from_creds(m, message, name, error, &session); - if (r < 0) - return r; - - return bus_session_method_activate(message, session, error); -} - -static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) { - const char *session_name, *seat_name; - Manager *m = userdata; - Session *session; - Seat *seat; - int r; - - assert(message); - assert(m); - - /* Same as ActivateSession() but refuses to work if - * the seat doesn't match */ - - r = sd_bus_message_read(message, "ss", &session_name, &seat_name); - if (r < 0) - return r; - - r = manager_get_session_from_creds(m, message, session_name, error, &session); - if (r < 0) - return r; - - r = manager_get_seat_from_creds(m, message, seat_name, error, &seat); - if (r < 0) - return r; - - if (session->seat != seat) - return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT, "Session %s not on seat %s", session_name, seat_name); - - r = session_activate(session); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - Session *session; - const char *name; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "s", &name); - if (r < 0) - return r; - - r = manager_get_session_from_creds(m, message, name, error, &session); - if (r < 0) - return r; - - return bus_session_method_lock(message, session, error); -} - -static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - int r; - - assert(message); - assert(m); - - r = bus_verify_polkit_async( - message, - CAP_SYS_ADMIN, - "org.freedesktop.login1.lock-sessions", - NULL, - false, - UID_INVALID, - &m->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* Will call us back */ - - r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions")); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) { - const char *name; - Manager *m = userdata; - Session *session; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "s", &name); - if (r < 0) - return r; - - r = manager_get_session_from_creds(m, message, name, error, &session); - if (r < 0) - return r; - - return bus_session_method_kill(message, session, error); -} - -static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - uint32_t uid; - User *user; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "u", &uid); - if (r < 0) - return r; - - r = manager_get_user_from_creds(m, message, uid, error, &user); - if (r < 0) - return r; - - return bus_user_method_kill(message, user, error); -} - -static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - const char *name; - Session *session; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "s", &name); - if (r < 0) - return r; - - r = manager_get_session_from_creds(m, message, name, error, &session); - if (r < 0) - return r; - - return bus_session_method_terminate(message, session, error); -} - -static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - uint32_t uid; - User *user; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "u", &uid); - if (r < 0) - return r; - - r = manager_get_user_from_creds(m, message, uid, error, &user); - if (r < 0) - return r; - - return bus_user_method_terminate(message, user, error); -} - -static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - const char *name; - Seat *seat; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "s", &name); - if (r < 0) - return r; - - r = manager_get_seat_from_creds(m, message, name, error, &seat); - if (r < 0) - return r; - - return bus_seat_method_terminate(message, seat, error); -} - -static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_free_ char *cc = NULL; - Manager *m = userdata; - int r, b, interactive; - struct passwd *pw; - const char *path; - uint32_t uid; - bool self = false; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive); - if (r < 0) - return r; - - if (uid == UID_INVALID) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - - /* Note that we get the owner UID of the session, not the actual client UID here! */ - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_owner_uid(creds, &uid); - if (r < 0) - return r; - - self = true; - - } else if (!uid_is_valid(uid)) - return -EINVAL; - - errno = 0; - pw = getpwuid(uid); - if (!pw) - return errno > 0 ? -errno : -ENOENT; - - r = bus_verify_polkit_async( - message, - CAP_SYS_ADMIN, - self ? "org.freedesktop.login1.set-self-linger" : "org.freedesktop.login1.set-user-linger", - NULL, - interactive, - UID_INVALID, - &m->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ - - mkdir_p_label("/var/lib/systemd", 0755); - - r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0); - if (r < 0) - return r; - - cc = cescape(pw->pw_name); - if (!cc) - return -ENOMEM; - - path = strjoina("/var/lib/systemd/linger/", cc); - if (b) { - User *u; - - r = touch(path); - if (r < 0) - return r; - - if (manager_add_user_by_uid(m, uid, &u) >= 0) - user_start(u); - - } else { - User *u; - - r = unlink(path); - if (r < 0 && errno != ENOENT) - return -errno; - - u = hashmap_get(m->users, UID_TO_PTR(uid)); - if (u) - user_add_to_gc_queue(u); - } - - return sd_bus_reply_method_return(message, NULL); -} - -static int trigger_device(Manager *m, struct udev_device *d) { - _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL; - struct udev_list_entry *first, *item; - int r; - - assert(m); - - e = udev_enumerate_new(m->udev); - if (!e) - return -ENOMEM; - - if (d) { - r = udev_enumerate_add_match_parent(e, d); - if (r < 0) - return r; - } - - r = udev_enumerate_scan_devices(e); - if (r < 0) - return r; - - first = udev_enumerate_get_list_entry(e); - udev_list_entry_foreach(item, first) { - _cleanup_free_ char *t = NULL; - const char *p; - - p = udev_list_entry_get_name(item); - - t = strappend(p, "/uevent"); - if (!t) - return -ENOMEM; - - write_string_file(t, "change", WRITE_STRING_FILE_CREATE); - } - - return 0; -} - -static int attach_device(Manager *m, const char *seat, const char *sysfs) { - _cleanup_udev_device_unref_ struct udev_device *d = NULL; - _cleanup_free_ char *rule = NULL, *file = NULL; - const char *id_for_seat; - int r; - - assert(m); - assert(seat); - assert(sysfs); - - d = udev_device_new_from_syspath(m->udev, sysfs); - if (!d) - return -ENODEV; - - if (!udev_device_has_tag(d, "seat")) - return -ENODEV; - - id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT"); - if (!id_for_seat) - return -ENODEV; - - if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0) - return -ENOMEM; - - if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0) - return -ENOMEM; - - mkdir_p_label("/etc/udev/rules.d", 0755); - r = write_string_file_atomic_label(file, rule); - if (r < 0) - return r; - - return trigger_device(m, d); -} - -static int flush_devices(Manager *m) { - _cleanup_closedir_ DIR *d; - - assert(m); - - d = opendir("/etc/udev/rules.d"); - if (!d) { - if (errno != ENOENT) - log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m"); - } else { - struct dirent *de; - - 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_errno(errno, "Failed to unlink %s: %m", de->d_name); - } - } - - return trigger_device(m, NULL); -} - -static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) { - const char *sysfs, *seat; - Manager *m = userdata; - int interactive, r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive); - if (r < 0) - return r; - - if (!path_startswith(sysfs, "/sys")) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs); - - if (!seat_name_is_valid(seat)) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat %s is not valid", seat); - - r = bus_verify_polkit_async( - message, - CAP_SYS_ADMIN, - "org.freedesktop.login1.attach-device", - NULL, - interactive, - UID_INVALID, - &m->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ - - r = attach_device(m, seat, sysfs); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - int interactive, r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "b", &interactive); - if (r < 0) - return r; - - r = bus_verify_polkit_async( - message, - CAP_SYS_ADMIN, - "org.freedesktop.login1.flush-devices", - NULL, - interactive, - UID_INVALID, - &m->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ - - r = flush_devices(m); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int have_multiple_sessions( - Manager *m, - uid_t uid) { - - Session *session; - Iterator i; - - assert(m); - - /* Check for other users' sessions. Greeter sessions do not - * count, and non-login sessions do not count either. */ - HASHMAP_FOREACH(session, m->sessions, i) - if (session->class == SESSION_USER && - session->user->uid != uid) - return true; - - return false; -} - -static int bus_manager_log_shutdown( - Manager *m, - InhibitWhat w, - const char *unit_name) { - - const char *p, *q; - - assert(m); - assert(unit_name); - - if (w != INHIBIT_SHUTDOWN) - return 0; - - if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) { - p = "MESSAGE=System is powering down"; - q = "SHUTDOWN=power-off"; - } else if (streq(unit_name, SPECIAL_HALT_TARGET)) { - p = "MESSAGE=System is halting"; - q = "SHUTDOWN=halt"; - } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) { - p = "MESSAGE=System is rebooting"; - q = "SHUTDOWN=reboot"; - } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) { - p = "MESSAGE=System is rebooting with kexec"; - q = "SHUTDOWN=kexec"; - } else { - p = "MESSAGE=System is shutting down"; - q = NULL; - } - - if (isempty(m->wall_message)) - p = strjoina(p, "."); - else - p = strjoina(p, " (", m->wall_message, ")."); - - return log_struct(LOG_NOTICE, - LOG_MESSAGE_ID(SD_MESSAGE_SHUTDOWN), - p, - q, - NULL); -} - -static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) { - Manager *m = userdata; - - assert(e); - assert(m); - - m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source); - return 0; -} - -int manager_set_lid_switch_ignore(Manager *m, usec_t until) { - int r; - - assert(m); - - if (until <= now(CLOCK_MONOTONIC)) - return 0; - - /* We want to ignore the lid switch for a while after each - * suspend, and after boot-up. Hence let's install a timer for - * this. As long as the event source exists we ignore the lid - * switch. */ - - if (m->lid_switch_ignore_event_source) { - usec_t u; - - r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u); - if (r < 0) - return r; - - if (until <= u) - return 0; - - r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until); - } else - r = sd_event_add_time( - m->event, - &m->lid_switch_ignore_event_source, - CLOCK_MONOTONIC, - until, 0, - lid_switch_ignore_handler, m); - - return r; -} - -static void reset_scheduled_shutdown(Manager *m) { - m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source); - m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source); - m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source); - m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type); - m->scheduled_shutdown_timeout = 0; - m->shutdown_dry_run = false; - - if (m->unlink_nologin) { - (void) unlink("/run/nologin"); - m->unlink_nologin = false; - } -} - -static int execute_shutdown_or_sleep( - Manager *m, - InhibitWhat w, - const char *unit_name, - sd_bus_error *error) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - char *c = NULL; - const char *p; - int r; - - assert(m); - assert(w >= 0); - assert(w < _INHIBIT_WHAT_MAX); - assert(unit_name); - - bus_manager_log_shutdown(m, w, unit_name); - - if (m->shutdown_dry_run) { - log_info("Running in dry run, suppressing action."); - reset_scheduled_shutdown(m); - } else { - r = sd_bus_call_method( - m->bus, - "org.freedesktop.systemd1", - "/org/freedesktop/systemd1", - "org.freedesktop.systemd1.Manager", - "StartUnit", - error, - &reply, - "ss", unit_name, "replace-irreversibly"); - if (r < 0) - return r; - - r = sd_bus_message_read(reply, "o", &p); - if (r < 0) - return r; - - c = strdup(p); - if (!c) - return -ENOMEM; - } - - m->action_unit = unit_name; - free(m->action_job); - m->action_job = c; - m->action_what = w; - - /* Make sure the lid switch is ignored for a while */ - manager_set_lid_switch_ignore(m, now(CLOCK_MONOTONIC) + m->holdoff_timeout_usec); - - return 0; -} - -int manager_dispatch_delayed(Manager *manager, bool timeout) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - Inhibitor *offending = NULL; - int r; - - assert(manager); - - if (manager->action_what == 0 || manager->action_job) - return 0; - - if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) { - _cleanup_free_ char *comm = NULL, *u = NULL; - - if (!timeout) - return 0; - - (void) get_process_comm(offending->pid, &comm); - u = uid_to_name(offending->uid); - - log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.", - offending->uid, strna(u), - offending->pid, strna(comm)); - } - - /* Actually do the operation */ - r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error); - if (r < 0) { - log_warning("Failed to send delayed message: %s", bus_error_message(&error, r)); - - manager->action_unit = NULL; - manager->action_what = 0; - return r; - } - - return 1; -} - -static int manager_inhibit_timeout_handler( - sd_event_source *s, - uint64_t usec, - void *userdata) { - - Manager *manager = userdata; - int r; - - assert(manager); - assert(manager->inhibit_timeout_source == s); - - r = manager_dispatch_delayed(manager, true); - return (r < 0) ? r : 0; -} - -static int delay_shutdown_or_sleep( - Manager *m, - InhibitWhat w, - const char *unit_name) { - - int r; - usec_t timeout_val; - - assert(m); - assert(w >= 0); - assert(w < _INHIBIT_WHAT_MAX); - assert(unit_name); - - timeout_val = now(CLOCK_MONOTONIC) + m->inhibit_delay_max; - - if (m->inhibit_timeout_source) { - r = sd_event_source_set_time(m->inhibit_timeout_source, timeout_val); - if (r < 0) - return log_error_errno(r, "sd_event_source_set_time() failed: %m"); - - r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT); - if (r < 0) - return log_error_errno(r, "sd_event_source_set_enabled() failed: %m"); - } else { - r = sd_event_add_time(m->event, &m->inhibit_timeout_source, CLOCK_MONOTONIC, - timeout_val, 0, manager_inhibit_timeout_handler, m); - if (r < 0) - return r; - } - - m->action_unit = unit_name; - m->action_what = w; - - return 0; -} - -static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) { - - static const char * const signal_name[_INHIBIT_WHAT_MAX] = { - [INHIBIT_SHUTDOWN] = "PrepareForShutdown", - [INHIBIT_SLEEP] = "PrepareForSleep" - }; - - int active = _active; - - assert(m); - assert(w >= 0); - assert(w < _INHIBIT_WHAT_MAX); - assert(signal_name[w]); - - return sd_bus_emit_signal(m->bus, - "/org/freedesktop/login1", - "org.freedesktop.login1.Manager", - signal_name[w], - "b", - active); -} - -int bus_manager_shutdown_or_sleep_now_or_later( - Manager *m, - const char *unit_name, - InhibitWhat w, - sd_bus_error *error) { - - bool delayed; - int r; - - assert(m); - assert(unit_name); - assert(w >= 0); - assert(w <= _INHIBIT_WHAT_MAX); - assert(!m->action_job); - - /* Tell everybody to prepare for shutdown/sleep */ - send_prepare_for(m, w, true); - - delayed = - m->inhibit_delay_max > 0 && - manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL); - - if (delayed) - /* Shutdown is delayed, keep in mind what we - * want to do, and start a timeout */ - r = delay_shutdown_or_sleep(m, w, unit_name); - else - /* Shutdown is not delayed, execute it - * immediately */ - r = execute_shutdown_or_sleep(m, w, unit_name, error); - - return r; -} - -static int verify_shutdown_creds( - Manager *m, - sd_bus_message *message, - InhibitWhat w, - bool interactive, - const char *action, - const char *action_multiple_sessions, - const char *action_ignore_inhibit, - sd_bus_error *error) { - - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - bool multiple_sessions, blocked; - uid_t uid; - int r; - - assert(m); - assert(message); - assert(w >= 0); - assert(w <= _INHIBIT_WHAT_MAX); - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_euid(creds, &uid); - if (r < 0) - return r; - - r = have_multiple_sessions(m, uid); - if (r < 0) - return r; - - multiple_sessions = r > 0; - blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL); - - if (multiple_sessions && action_multiple_sessions) { - r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error); - if (r < 0) - return r; - if (r == 0) - return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ - } - - if (blocked && action_ignore_inhibit) { - r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error); - if (r < 0) - return r; - if (r == 0) - return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ - } - - if (!multiple_sessions && !blocked && action) { - r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error); - if (r < 0) - return r; - if (r == 0) - return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ - } - - return 0; -} - -static int method_do_shutdown_or_sleep( - Manager *m, - sd_bus_message *message, - const char *unit_name, - InhibitWhat w, - const char *action, - const char *action_multiple_sessions, - const char *action_ignore_inhibit, - const char *sleep_verb, - sd_bus_error *error) { - - int interactive, r; - - assert(m); - assert(message); - assert(unit_name); - assert(w >= 0); - assert(w <= _INHIBIT_WHAT_MAX); - - r = sd_bus_message_read(message, "b", &interactive); - if (r < 0) - return r; - - /* Don't allow multiple jobs being executed at the same time */ - if (m->action_what) - return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress"); - - if (sleep_verb) { - r = can_sleep(sleep_verb); - if (r < 0) - return r; - - if (r == 0) - return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported"); - } - - r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions, - action_ignore_inhibit, error); - if (r != 0) - return r; - - r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_do_shutdown_or_sleep( - m, message, - SPECIAL_POWEROFF_TARGET, - INHIBIT_SHUTDOWN, - "org.freedesktop.login1.power-off", - "org.freedesktop.login1.power-off-multiple-sessions", - "org.freedesktop.login1.power-off-ignore-inhibit", - NULL, - error); -} - -static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_do_shutdown_or_sleep( - m, message, - SPECIAL_REBOOT_TARGET, - INHIBIT_SHUTDOWN, - "org.freedesktop.login1.reboot", - "org.freedesktop.login1.reboot-multiple-sessions", - "org.freedesktop.login1.reboot-ignore-inhibit", - NULL, - error); -} - -static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_do_shutdown_or_sleep( - m, message, - SPECIAL_SUSPEND_TARGET, - INHIBIT_SLEEP, - "org.freedesktop.login1.suspend", - "org.freedesktop.login1.suspend-multiple-sessions", - "org.freedesktop.login1.suspend-ignore-inhibit", - "suspend", - error); -} - -static int nologin_timeout_handler( - sd_event_source *s, - uint64_t usec, - void *userdata) { - - Manager *m = userdata; - int r; - - log_info("Creating /run/nologin, blocking further logins..."); - - r = write_string_file_atomic_label("/run/nologin", "System is going down."); - if (r < 0) - log_error_errno(r, "Failed to create /run/nologin: %m"); - else - m->unlink_nologin = true; - - return 0; -} - -static int update_schedule_file(Manager *m) { - _cleanup_free_ char *temp_path = NULL; - _cleanup_fclose_ FILE *f = NULL; - int r; - - assert(m); - - r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0); - if (r < 0) - return log_error_errno(r, "Failed to create shutdown subdirectory: %m"); - - r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path); - if (r < 0) - return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m"); - - (void) fchmod(fileno(f), 0644); - - fprintf(f, - "USEC="USEC_FMT"\n" - "WARN_WALL=%i\n" - "MODE=%s\n", - m->scheduled_shutdown_timeout, - m->enable_wall_messages, - m->scheduled_shutdown_type); - - if (!isempty(m->wall_message)) { - _cleanup_free_ char *t; - - t = cescape(m->wall_message); - if (!t) { - r = -ENOMEM; - goto fail; - } - - fprintf(f, "WALL_MESSAGE=%s\n", t); - } - - r = fflush_and_check(f); - if (r < 0) - goto fail; - - if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) { - r = -errno; - goto fail; - } - - return 0; - -fail: - (void) unlink(temp_path); - (void) unlink("/run/systemd/shutdown/scheduled"); - - return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m"); -} - -static int manager_scheduled_shutdown_handler( - sd_event_source *s, - uint64_t usec, - void *userdata) { - - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - Manager *m = userdata; - const char *target; - int r; - - assert(m); - - if (isempty(m->scheduled_shutdown_type)) - return 0; - - if (streq(m->scheduled_shutdown_type, "halt")) - target = SPECIAL_HALT_TARGET; - else if (streq(m->scheduled_shutdown_type, "poweroff")) - target = SPECIAL_POWEROFF_TARGET; - else - target = SPECIAL_REBOOT_TARGET; - - r = execute_shutdown_or_sleep(m, 0, target, &error); - if (r < 0) - return log_error_errno(r, "Unable to execute transition to %s: %m", target); - - return 0; -} - -static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - const char *action_multiple_sessions = NULL; - const char *action_ignore_inhibit = NULL; - const char *action = NULL; - uint64_t elapse; - char *type; - int r; - - assert(m); - assert(message); - - r = sd_bus_message_read(message, "st", &type, &elapse); - if (r < 0) - return r; - - if (startswith(type, "dry-")) { - type += 4; - m->shutdown_dry_run = true; - } - - if (streq(type, "reboot")) { - action = "org.freedesktop.login1.reboot"; - action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions"; - action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit"; - } else if (streq(type, "halt")) { - action = "org.freedesktop.login1.halt"; - action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions"; - action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit"; - } else if (streq(type, "poweroff")) { - action = "org.freedesktop.login1.power-off"; - action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions"; - action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit"; - } else - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type"); - - r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, false, - action, action_multiple_sessions, action_ignore_inhibit, error); - if (r != 0) - return r; - - if (m->scheduled_shutdown_timeout_source) { - r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse); - if (r < 0) - return log_error_errno(r, "sd_event_source_set_time() failed: %m"); - - r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT); - if (r < 0) - return log_error_errno(r, "sd_event_source_set_enabled() failed: %m"); - } else { - r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source, - CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m); - if (r < 0) - return log_error_errno(r, "sd_event_add_time() failed: %m"); - } - - r = free_and_strdup(&m->scheduled_shutdown_type, type); - if (r < 0) { - m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source); - return log_oom(); - } - - if (m->nologin_timeout_source) { - r = sd_event_source_set_time(m->nologin_timeout_source, elapse); - if (r < 0) - return log_error_errno(r, "sd_event_source_set_time() failed: %m"); - - r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT); - if (r < 0) - return log_error_errno(r, "sd_event_source_set_enabled() failed: %m"); - } else { - r = sd_event_add_time(m->event, &m->nologin_timeout_source, - CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m); - if (r < 0) - return log_error_errno(r, "sd_event_add_time() failed: %m"); - } - - m->scheduled_shutdown_timeout = elapse; - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds); - if (r >= 0) { - const char *tty = NULL; - - (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid); - (void) sd_bus_creds_get_tty(creds, &tty); - - r = free_and_strdup(&m->scheduled_shutdown_tty, tty); - if (r < 0) { - m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source); - return log_oom(); - } - } - - r = manager_setup_wall_message_timer(m); - if (r < 0) - return r; - - if (!isempty(type)) { - r = update_schedule_file(m); - if (r < 0) - return r; - } else - (void) unlink("/run/systemd/shutdown/scheduled"); - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - bool cancelled; - - assert(m); - assert(message); - - cancelled = m->scheduled_shutdown_type != NULL; - reset_scheduled_shutdown(m); - - if (cancelled) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - const char *tty = NULL; - uid_t uid = 0; - int r; - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds); - if (r >= 0) { - (void) sd_bus_creds_get_uid(creds, &uid); - (void) sd_bus_creds_get_tty(creds, &tty); - } - - utmp_wall("The system shutdown has been cancelled", - uid_to_name(uid), tty, logind_wall_tty_filter, m); - } - - return sd_bus_reply_method_return(message, "b", cancelled); -} - -static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_do_shutdown_or_sleep( - m, message, - SPECIAL_HIBERNATE_TARGET, - INHIBIT_SLEEP, - "org.freedesktop.login1.hibernate", - "org.freedesktop.login1.hibernate-multiple-sessions", - "org.freedesktop.login1.hibernate-ignore-inhibit", - "hibernate", - error); -} - -static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_do_shutdown_or_sleep( - m, message, - SPECIAL_HYBRID_SLEEP_TARGET, - INHIBIT_SLEEP, - "org.freedesktop.login1.hibernate", - "org.freedesktop.login1.hibernate-multiple-sessions", - "org.freedesktop.login1.hibernate-ignore-inhibit", - "hybrid-sleep", - error); -} - -static int method_can_shutdown_or_sleep( - Manager *m, - sd_bus_message *message, - InhibitWhat w, - const char *action, - const char *action_multiple_sessions, - const char *action_ignore_inhibit, - const char *sleep_verb, - sd_bus_error *error) { - - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - bool multiple_sessions, challenge, blocked; - const char *result = NULL; - uid_t uid; - int r; - - assert(m); - assert(message); - assert(w >= 0); - assert(w <= _INHIBIT_WHAT_MAX); - assert(action); - assert(action_multiple_sessions); - assert(action_ignore_inhibit); - - if (sleep_verb) { - r = can_sleep(sleep_verb); - if (r < 0) - return r; - if (r == 0) - return sd_bus_reply_method_return(message, "s", "na"); - } - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_euid(creds, &uid); - if (r < 0) - return r; - - r = have_multiple_sessions(m, uid); - if (r < 0) - return r; - - multiple_sessions = r > 0; - blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL); - - if (multiple_sessions) { - r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error); - if (r < 0) - return r; - - if (r > 0) - result = "yes"; - else if (challenge) - result = "challenge"; - else - result = "no"; - } - - if (blocked) { - r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error); - if (r < 0) - return r; - - if (r > 0 && !result) - result = "yes"; - else if (challenge && (!result || streq(result, "yes"))) - result = "challenge"; - else - result = "no"; - } - - if (!multiple_sessions && !blocked) { - /* If neither inhibit nor multiple sessions - * apply then just check the normal policy */ - - r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error); - if (r < 0) - return r; - - if (r > 0) - result = "yes"; - else if (challenge) - result = "challenge"; - else - result = "no"; - } - - return sd_bus_reply_method_return(message, "s", result); -} - -static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_can_shutdown_or_sleep( - m, message, - INHIBIT_SHUTDOWN, - "org.freedesktop.login1.power-off", - "org.freedesktop.login1.power-off-multiple-sessions", - "org.freedesktop.login1.power-off-ignore-inhibit", - NULL, - error); -} - -static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_can_shutdown_or_sleep( - m, message, - INHIBIT_SHUTDOWN, - "org.freedesktop.login1.reboot", - "org.freedesktop.login1.reboot-multiple-sessions", - "org.freedesktop.login1.reboot-ignore-inhibit", - NULL, - error); -} - -static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_can_shutdown_or_sleep( - m, message, - INHIBIT_SLEEP, - "org.freedesktop.login1.suspend", - "org.freedesktop.login1.suspend-multiple-sessions", - "org.freedesktop.login1.suspend-ignore-inhibit", - "suspend", - error); -} - -static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_can_shutdown_or_sleep( - m, message, - INHIBIT_SLEEP, - "org.freedesktop.login1.hibernate", - "org.freedesktop.login1.hibernate-multiple-sessions", - "org.freedesktop.login1.hibernate-ignore-inhibit", - "hibernate", - error); -} - -static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - - return method_can_shutdown_or_sleep( - m, message, - INHIBIT_SLEEP, - "org.freedesktop.login1.hibernate", - "org.freedesktop.login1.hibernate-multiple-sessions", - "org.freedesktop.login1.hibernate-ignore-inhibit", - "hybrid-sleep", - error); -} - -static int property_get_reboot_to_firmware_setup( - sd_bus *bus, - const char *path, - const char *interface, - const char *property, - sd_bus_message *reply, - void *userdata, - sd_bus_error *error) { - int r; - - assert(bus); - assert(reply); - assert(userdata); - - r = efi_get_reboot_to_firmware(); - if (r < 0 && r != -EOPNOTSUPP) - return r; - - return sd_bus_message_append(reply, "b", r > 0); -} - -static int method_set_reboot_to_firmware_setup( - sd_bus_message *message, - void *userdata, - sd_bus_error *error) { - - int b, r; - Manager *m = userdata; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "b", &b); - if (r < 0) - return r; - - r = bus_verify_polkit_async(message, - CAP_SYS_ADMIN, - "org.freedesktop.login1.set-reboot-to-firmware-setup", - NULL, - false, - UID_INVALID, - &m->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ - - r = efi_set_reboot_to_firmware(b); - if (r < 0) - return r; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_can_reboot_to_firmware_setup( - sd_bus_message *message, - void *userdata, - sd_bus_error *error) { - - int r; - bool challenge; - const char *result; - Manager *m = userdata; - - assert(message); - assert(m); - - r = efi_reboot_to_firmware_supported(); - if (r == -EOPNOTSUPP) - return sd_bus_reply_method_return(message, "s", "na"); - else if (r < 0) - return r; - - r = bus_test_polkit(message, - CAP_SYS_ADMIN, - "org.freedesktop.login1.set-reboot-to-firmware-setup", - NULL, - UID_INVALID, - &challenge, - error); - if (r < 0) - return r; - - if (r > 0) - result = "yes"; - else if (challenge) - result = "challenge"; - else - result = "no"; - - return sd_bus_reply_method_return(message, "s", result); -} - -static int method_set_wall_message( - sd_bus_message *message, - void *userdata, - sd_bus_error *error) { - - int r; - Manager *m = userdata; - char *wall_message; - int enable_wall_messages; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages); - if (r < 0) - return r; - - r = bus_verify_polkit_async(message, - CAP_SYS_ADMIN, - "org.freedesktop.login1.set-wall-message", - NULL, - false, - UID_INVALID, - &m->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* Will call us back */ - - if (isempty(wall_message)) - m->wall_message = mfree(m->wall_message); - else { - r = free_and_strdup(&m->wall_message, wall_message); - if (r < 0) - return log_oom(); - } - - m->enable_wall_messages = enable_wall_messages; - - return sd_bus_reply_method_return(message, NULL); -} - -static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; - const char *who, *why, *what, *mode; - _cleanup_free_ char *id = NULL; - _cleanup_close_ int fifo_fd = -1; - Manager *m = userdata; - Inhibitor *i = NULL; - InhibitMode mm; - InhibitWhat w; - pid_t pid; - uid_t uid; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode); - if (r < 0) - return r; - - w = inhibit_what_from_string(what); - if (w <= 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid what specification %s", what); - - mm = inhibit_mode_from_string(mode); - if (mm < 0) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid mode specification %s", mode); - - /* Delay is only supported for shutdown/sleep */ - if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP))) - return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delay inhibitors only supported for shutdown and sleep"); - - /* Don't allow taking delay locks while we are already - * executing the operation. We shouldn't create the impression - * that the lock was successful if the machine is about to go - * down/suspend any moment. */ - if (m->action_what & w) - return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "The operation inhibition has been requested for is already running"); - - r = bus_verify_polkit_async( - message, - CAP_SYS_BOOT, - w == INHIBIT_SHUTDOWN ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") : - w == INHIBIT_SLEEP ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep" : "org.freedesktop.login1.inhibit-delay-sleep") : - w == INHIBIT_IDLE ? "org.freedesktop.login1.inhibit-block-idle" : - w == INHIBIT_HANDLE_POWER_KEY ? "org.freedesktop.login1.inhibit-handle-power-key" : - w == INHIBIT_HANDLE_SUSPEND_KEY ? "org.freedesktop.login1.inhibit-handle-suspend-key" : - w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" : - "org.freedesktop.login1.inhibit-handle-lid-switch", - NULL, - false, - UID_INVALID, - &m->polkit_registry, - error); - if (r < 0) - return r; - if (r == 0) - return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ - - r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds); - if (r < 0) - return r; - - r = sd_bus_creds_get_euid(creds, &uid); - if (r < 0) - return r; - - r = sd_bus_creds_get_pid(creds, &pid); - if (r < 0) - return r; - - if (hashmap_size(m->inhibitors) >= m->inhibitors_max) - return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.", m->inhibitors_max); - - do { - id = mfree(id); - - if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0) - return -ENOMEM; - - } while (hashmap_get(m->inhibitors, id)); - - r = manager_add_inhibitor(m, id, &i); - if (r < 0) - return r; - - i->what = w; - i->mode = mm; - i->pid = pid; - i->uid = uid; - i->why = strdup(why); - i->who = strdup(who); - - if (!i->why || !i->who) { - r = -ENOMEM; - goto fail; - } - - fifo_fd = inhibitor_create_fifo(i); - if (fifo_fd < 0) { - r = fifo_fd; - goto fail; - } - - inhibitor_start(i); - - return sd_bus_reply_method_return(message, "h", fifo_fd); - -fail: - if (i) - inhibitor_free(i); - - return r; -} - -const sd_bus_vtable manager_vtable[] = { - SD_BUS_VTABLE_START(0), - - SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0), - SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0), - - SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE), - SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0), - SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0), - SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0), - SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0), - SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("RuntimeDirectorySize", "t", bus_property_get_size, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_current_inhibitors, 0, 0), - SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST), - SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_current_sessions, 0, 0), - SD_BUS_PROPERTY("UserTasksMax", "t", NULL, offsetof(Manager, user_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST), - - SD_BUS_METHOD("GetSession", "s", "o", method_get_session, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("GetUser", "u", "o", method_get_user, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("GetUserByPID", "u", "o", method_get_user_by_pid, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("GetSeat", "s", "o", method_get_seat, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("ListSessions", NULL, "a(susso)", method_list_sessions, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("ListUsers", NULL, "a(uso)", method_list_users, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("ListSeats", NULL, "a(so)", method_list_seats, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("ListInhibitors", NULL, "a(ssssuu)", method_list_inhibitors, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("CreateSession", "uusssssussbssa(sv)", "soshusub", method_create_session, 0), - SD_BUS_METHOD("ReleaseSession", "s", NULL, method_release_session, 0), - SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("ActivateSessionOnSeat", "ss", NULL, method_activate_session_on_seat, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("LockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("SetUserLinger", "ubb", NULL, method_set_user_linger, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("AttachDevice", "ssb", NULL, method_attach_device, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("FlushDevices", "b", NULL, method_flush_devices, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("PowerOff", "b", NULL, method_poweroff, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("Reboot", "b", NULL, method_reboot, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("ScheduleShutdown", "st", NULL, method_schedule_shutdown, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("CancelScheduledShutdown", NULL, "b", method_cancel_scheduled_shutdown, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("CanRebootToFirmwareSetup", NULL, "s", method_can_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("SetRebootToFirmwareSetup", "b", NULL, method_set_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED), - SD_BUS_METHOD("SetWallMessage", "sb", NULL, method_set_wall_message, SD_BUS_VTABLE_UNPRIVILEGED), - - SD_BUS_SIGNAL("SessionNew", "so", 0), - SD_BUS_SIGNAL("SessionRemoved", "so", 0), - SD_BUS_SIGNAL("UserNew", "uo", 0), - SD_BUS_SIGNAL("UserRemoved", "uo", 0), - SD_BUS_SIGNAL("SeatNew", "so", 0), - SD_BUS_SIGNAL("SeatRemoved", "so", 0), - SD_BUS_SIGNAL("PrepareForShutdown", "b", 0), - SD_BUS_SIGNAL("PrepareForSleep", "b", 0), - - SD_BUS_VTABLE_END -}; - -static int session_jobs_reply(Session *s, const char *unit, const char *result) { - int r = 0; - - assert(s); - assert(unit); - - if (!s->started) - return r; - - if (streq(result, "done")) - r = session_send_create_reply(s, NULL); - else { - _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL; - - sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result); - r = session_send_create_reply(s, &e); - } - - return r; -} - -int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) { - const char *path, *result, *unit; - Manager *m = userdata; - Session *session; - uint32_t id; - User *user; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result); - if (r < 0) { - bus_log_parse_error(r); - return 0; - } - - if (m->action_job && streq(m->action_job, path)) { - log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what)); - - /* Tell people that they now may take a lock again */ - send_prepare_for(m, m->action_what, false); - - m->action_job = mfree(m->action_job); - m->action_unit = NULL; - m->action_what = 0; - return 0; - } - - session = hashmap_get(m->session_units, unit); - if (session && streq_ptr(path, session->scope_job)) { - session->scope_job = mfree(session->scope_job); - session_jobs_reply(session, unit, result); - - session_save(session); - user_save(session->user); - session_add_to_gc_queue(session); - } - - user = hashmap_get(m->user_units, unit); - if (user && - (streq_ptr(path, user->service_job) || - streq_ptr(path, user->slice_job))) { - - if (streq_ptr(path, user->service_job)) - user->service_job = mfree(user->service_job); - - if (streq_ptr(path, user->slice_job)) - user->slice_job = mfree(user->slice_job); - - LIST_FOREACH(sessions_by_user, session, user->sessions) - session_jobs_reply(session, unit, result); - - user_save(user); - user_add_to_gc_queue(user); - } - - return 0; -} - -int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) { - const char *path, *unit; - Manager *m = userdata; - Session *session; - User *user; - int r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "so", &unit, &path); - if (r < 0) { - bus_log_parse_error(r); - return 0; - } - - session = hashmap_get(m->session_units, unit); - if (session) - session_add_to_gc_queue(session); - - user = hashmap_get(m->user_units, unit); - if (user) - user_add_to_gc_queue(user); - - return 0; -} - -int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) { - _cleanup_free_ char *unit = NULL; - Manager *m = userdata; - const char *path; - Session *session; - User *user; - int r; - - assert(message); - assert(m); - - path = sd_bus_message_get_path(message); - if (!path) - return 0; - - r = unit_name_from_dbus_path(path, &unit); - if (r == -EINVAL) /* not a unit */ - return 0; - if (r < 0) { - log_oom(); - return 0; - } - - session = hashmap_get(m->session_units, unit); - if (session) - session_add_to_gc_queue(session); - - user = hashmap_get(m->user_units, unit); - if (user) - user_add_to_gc_queue(user); - - return 0; -} - -int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) { - Manager *m = userdata; - Session *session; - Iterator i; - int b, r; - - assert(message); - assert(m); - - r = sd_bus_message_read(message, "b", &b); - if (r < 0) { - bus_log_parse_error(r); - return 0; - } - - if (b) - return 0; - - /* systemd finished reloading, let's recheck all our sessions */ - log_debug("System manager has been reloaded, rechecking sessions..."); - - HASHMAP_FOREACH(session, m->sessions, i) - session_add_to_gc_queue(session); - - return 0; -} - -int manager_send_changed(Manager *manager, const char *property, ...) { - char **l; - - assert(manager); - - l = strv_from_stdarg_alloca(property); - - return sd_bus_emit_properties_changed_strv( - manager->bus, - "/org/freedesktop/login1", - "org.freedesktop.login1.Manager", - l); -} - -static int strdup_job(sd_bus_message *reply, char **job) { - const char *j; - char *copy; - int r; - - r = sd_bus_message_read(reply, "o", &j); - if (r < 0) - return r; - - copy = strdup(j); - if (!copy) - return -ENOMEM; - - *job = copy; - return 1; -} - -int manager_start_slice( - Manager *manager, - const char *slice, - const char *description, - const char *after, - const char *after2, - uint64_t tasks_max, - sd_bus_error *error, - char **job) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; - int r; - - assert(manager); - assert(slice); - assert(job); - - r = sd_bus_message_new_method_call( - manager->bus, - &m, - "org.freedesktop.systemd1", - "/org/freedesktop/systemd1", - "org.freedesktop.systemd1.Manager", - "StartTransientUnit"); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "ss", strempty(slice), "fail"); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "(sv)"); - if (r < 0) - return r; - - if (!isempty(description)) { - r = sd_bus_message_append(m, "(sv)", "Description", "s", description); - if (r < 0) - return r; - } - - if (!isempty(after)) { - r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after); - if (r < 0) - return r; - } - - if (!isempty(after2)) { - r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2); - if (r < 0) - return r; - } - - r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "a(sa(sv))", 0); - if (r < 0) - return r; - - r = sd_bus_call(manager->bus, m, 0, error, &reply); - if (r < 0) - return r; - - return strdup_job(reply, job); -} - -int manager_start_scope( - Manager *manager, - const char *scope, - pid_t pid, - const char *slice, - const char *description, - const char *after, - const char *after2, - uint64_t tasks_max, - sd_bus_error *error, - char **job) { - - _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; - int r; - - assert(manager); - assert(scope); - assert(pid > 1); - assert(job); - - r = sd_bus_message_new_method_call( - manager->bus, - &m, - "org.freedesktop.systemd1", - "/org/freedesktop/systemd1", - "org.freedesktop.systemd1.Manager", - "StartTransientUnit"); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "ss", strempty(scope), "fail"); - if (r < 0) - return r; - - r = sd_bus_message_open_container(m, 'a', "(sv)"); - if (r < 0) - return r; - - if (!isempty(slice)) { - r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice); - if (r < 0) - return r; - } - - if (!isempty(description)) { - r = sd_bus_message_append(m, "(sv)", "Description", "s", description); - if (r < 0) - return r; - } - - if (!isempty(after)) { - r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after); - if (r < 0) - return r; - } - - if (!isempty(after2)) { - r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2); - if (r < 0) - return r; - } - - /* cgroup empty notification is not available in containers - * currently. To make this less problematic, let's shorten the - * stop timeout for sessions, so that we don't wait - * forever. */ - - /* Make sure that the session shells are terminated with - * SIGHUP since bash and friends tend to ignore SIGTERM */ - r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max); - if (r < 0) - return r; - - r = sd_bus_message_close_container(m); - if (r < 0) - return r; - - r = sd_bus_message_append(m, "a(sa(sv))", 0); - if (r < 0) - return r; - - r = sd_bus_call(manager->bus, m, 0, error, &reply); - if (r < 0) - return r; - - return strdup_job(reply, job); -} - -int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - int r; - - assert(manager); - assert(unit); - assert(job); - - r = sd_bus_call_method( - manager->bus, - "org.freedesktop.systemd1", - "/org/freedesktop/systemd1", - "org.freedesktop.systemd1.Manager", - "StartUnit", - error, - &reply, - "ss", unit, "replace"); - if (r < 0) - return r; - - return strdup_job(reply, job); -} - -int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) { - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - int r; - - assert(manager); - assert(unit); - assert(job); - - r = sd_bus_call_method( - manager->bus, - "org.freedesktop.systemd1", - "/org/freedesktop/systemd1", - "org.freedesktop.systemd1.Manager", - "StopUnit", - error, - &reply, - "ss", unit, "fail"); - if (r < 0) { - if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) || - sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) { - - *job = NULL; - sd_bus_error_free(error); - return 0; - } - - return r; - } - - return strdup_job(reply, job); -} - -int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *error) { - _cleanup_free_ char *path = NULL; - int r; - - assert(manager); - assert(scope); - - path = unit_dbus_path_from_name(scope); - if (!path) - return -ENOMEM; - - r = sd_bus_call_method( - manager->bus, - "org.freedesktop.systemd1", - path, - "org.freedesktop.systemd1.Scope", - "Abandon", - error, - NULL, - NULL); - if (r < 0) { - if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) || - sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED) || - sd_bus_error_has_name(error, BUS_ERROR_SCOPE_NOT_RUNNING)) { - sd_bus_error_free(error); - return 0; - } - - return r; - } - - return 1; -} - -int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) { - assert(manager); - assert(unit); - - return sd_bus_call_method( - manager->bus, - "org.freedesktop.systemd1", - "/org/freedesktop/systemd1", - "org.freedesktop.systemd1.Manager", - "KillUnit", - error, - NULL, - "ssi", unit, who == KILL_LEADER ? "main" : "all", signo); -} - -int manager_unit_is_active(Manager *manager, const char *unit) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - _cleanup_free_ char *path = NULL; - const char *state; - int r; - - assert(manager); - assert(unit); - - path = unit_dbus_path_from_name(unit); - if (!path) - return -ENOMEM; - - r = sd_bus_get_property( - manager->bus, - "org.freedesktop.systemd1", - path, - "org.freedesktop.systemd1.Unit", - "ActiveState", - &error, - &reply, - "s"); - if (r < 0) { - /* systemd might have droppped off momentarily, let's - * not make this an error */ - if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) || - sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED)) - return true; - - /* If the unit is already unloaded then it's not - * active */ - if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) || - sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED)) - return false; - - return r; - } - - r = sd_bus_message_read(reply, "s", &state); - if (r < 0) - return -EINVAL; - - return !streq(state, "inactive") && !streq(state, "failed"); -} - -int manager_job_is_active(Manager *manager, const char *path) { - _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; - int r; - - assert(manager); - assert(path); - - r = sd_bus_get_property( - manager->bus, - "org.freedesktop.systemd1", - path, - "org.freedesktop.systemd1.Job", - "State", - &error, - &reply, - "s"); - if (r < 0) { - if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) || - sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED)) - return true; - - if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT)) - return false; - - return r; - } - - /* We don't actually care about the state really. The fact - * that we could read the job state is enough for us */ - - return true; -} |