/*-*- 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 . ***/ #include #include #include #include #include #include "sd-id128.h" #include "sd-messages.h" #include "strv.h" #include "mkdir.h" #include "path-util.h" #include "special.h" #include "sleep-config.h" #include "fileio-label.h" #include "label.h" #include "utf8.h" #include "unit-name.h" #include "virt.h" #include "audit.h" #include "bus-util.h" #include "bus-error.h" #include "logind.h" #include "bus-errors.h" #include "udev-util.h" static int property_get_idle_hint( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { Manager *m = userdata; assert(bus); assert(reply); assert(m); return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0); } static int property_get_idle_since_hint( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { Manager *m = userdata; dual_timestamp t; assert(bus); assert(reply); assert(m); manager_get_idle_hint(m, &t); return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic); } static int property_get_inhibited( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { Manager *m = userdata; InhibitWhat w; assert(bus); assert(reply); assert(m); w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY); return sd_bus_message_append(reply, "s", inhibit_what_to_string(w)); } static int property_get_preparing( sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error) { Manager *m = userdata; bool b; assert(bus); assert(reply); assert(m); if (streq(property, "PreparingForShutdown")) b = !!(m->action_what & INHIBIT_SHUTDOWN); else b = !!(m->action_what & INHIBIT_SLEEP); return sd_bus_message_append(reply, "b", b); } static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction); static int method_get_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_free_ char *p = NULL; Manager *m = userdata; const char *name; Session *session; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "s", &name); if (r < 0) return r; session = hashmap_get(m->sessions, name); if (!session) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name); p = session_bus_path(session); if (!p) return -ENOMEM; return sd_bus_reply_method_return(message, "o", p); } static int method_get_session_by_pid(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_free_ char *p = NULL; Session *session = NULL; Manager *m = userdata; pid_t pid; int r; assert(bus); assert(message); assert(m); assert_cc(sizeof(pid_t) == sizeof(uint32_t)); r = sd_bus_message_read(message, "u", &pid); if (r < 0) return r; if (pid == 0) { _cleanup_bus_creds_unref_ 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); if (r < 0) return r; } r = manager_get_session_by_pid(m, pid, &session); if (r < 0) return r; if (!session) return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID, "PID %lu does not belong to any known session", (unsigned long) pid); p = session_bus_path(session); if (!p) return -ENOMEM; return sd_bus_reply_method_return(message, "o", p); } static int method_get_user(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_free_ char *p = NULL; Manager *m = userdata; uint32_t uid; User *user; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "u", &uid); if (r < 0) return r; user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); if (!user) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user '%lu' known or logged in", (unsigned long) uid); p = user_bus_path(user); if (!p) return -ENOMEM; return sd_bus_reply_method_return(message, "o", p); } static int method_get_user_by_pid(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_free_ char *p = NULL; Manager *m = userdata; User *user = NULL; pid_t pid; int r; assert(bus); assert(message); assert(m); assert_cc(sizeof(pid_t) == sizeof(uint32_t)); r = sd_bus_message_read(message, "u", &pid); if (r < 0) return r; if (pid == 0) { _cleanup_bus_creds_unref_ 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); if (r < 0) return r; } r = manager_get_user_by_pid(m, pid, &user); if (r < 0) return r; if (!user) return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID, "PID %lu does not belong to any known or logged in user", (unsigned long) pid); p = user_bus_path(user); if (!p) return -ENOMEM; return sd_bus_reply_method_return(message, "o", p); } static int method_get_seat(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_free_ char *p = NULL; Manager *m = userdata; const char *name; Seat *seat; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "s", &name); if (r < 0) return r; seat = hashmap_get(m->seats, name); if (!seat) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name); p = seat_bus_path(seat); if (!p) return -ENOMEM; return sd_bus_reply_method_return(message, "o", p); } static int method_list_sessions(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; Manager *m = userdata; Session *session; Iterator i; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_new_method_return(message, &reply); if (r < 0) return r; r = sd_bus_message_open_container(reply, 'a', "(susso)"); if (r < 0) return r; HASHMAP_FOREACH(session, m->sessions, i) { _cleanup_free_ char *p = NULL; p = session_bus_path(session); if (!p) return -ENOMEM; r = sd_bus_message_append(reply, "(susso)", session->id, (uint32_t) session->user->uid, session->user->name, session->seat ? session->seat->id : "", p); if (r < 0) return r; } r = sd_bus_message_close_container(reply); if (r < 0) return r; return sd_bus_send(bus, reply, NULL); } static int method_list_users(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; Manager *m = userdata; User *user; Iterator i; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_new_method_return(message, &reply); if (r < 0) return r; r = sd_bus_message_open_container(reply, 'a', "(uso)"); if (r < 0) return r; HASHMAP_FOREACH(user, m->users, i) { _cleanup_free_ char *p = NULL; p = user_bus_path(user); if (!p) return -ENOMEM; r = sd_bus_message_append(reply, "(uso)", (uint32_t) user->uid, user->name, p); if (r < 0) return r; } r = sd_bus_message_close_container(reply); if (r < 0) return r; return sd_bus_send(bus, reply, NULL); } static int method_list_seats(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; Manager *m = userdata; Seat *seat; Iterator i; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_new_method_return(message, &reply); if (r < 0) return r; r = sd_bus_message_open_container(reply, 'a', "(so)"); if (r < 0) return r; HASHMAP_FOREACH(seat, m->seats, i) { _cleanup_free_ char *p = NULL; p = seat_bus_path(seat); if (!p) return -ENOMEM; r = sd_bus_message_append(reply, "(so)", seat->id, p); if (r < 0) return r; } r = sd_bus_message_close_container(reply); if (r < 0) return r; return sd_bus_send(bus, reply, NULL); } static int method_list_inhibitors(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; Manager *m = userdata; Inhibitor *inhibitor; Iterator i; int r; r = sd_bus_message_new_method_return(message, &reply); if (r < 0) return r; r = sd_bus_message_open_container(reply, 'a', "(ssssuu)"); if (r < 0) return r; HASHMAP_FOREACH(inhibitor, m->inhibitors, i) { r = sd_bus_message_append(reply, "(ssssuu)", strempty(inhibit_what_to_string(inhibitor->what)), strempty(inhibitor->who), strempty(inhibitor->why), strempty(inhibit_mode_to_string(inhibitor->mode)), (uint32_t) inhibitor->uid, (uint32_t) inhibitor->pid); if (r < 0) return r; } r = sd_bus_message_close_container(reply); if (r < 0) return r; return sd_bus_send(bus, reply, NULL); } static int method_create_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop; uint32_t uid, leader, audit_id = 0; _cleanup_free_ char *id = NULL; Session *session = NULL; Manager *m = userdata; User *user = NULL; Seat *seat = NULL; int remote; uint32_t vtnr = 0; SessionType t; SessionClass c; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "uusssssussbss", &uid, &leader, &service, &type, &class, &desktop, &cseat, &vtnr, &tty, &display, &remote, &remote_user, &remote_host); if (r < 0) return r; if (leader == 1) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID"); if (isempty(type)) t = _SESSION_TYPE_INVALID; else { t = session_type_from_string(type); if (t < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session type %s", type); } if (isempty(class)) c = _SESSION_CLASS_INVALID; else { c = session_class_from_string(class); if (c < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session class %s", class); } if (isempty(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_bus_creds_unref_ sd_bus_creds *creds = NULL; r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds); if (r < 0) return r; assert_cc(sizeof(uint32_t) == sizeof(pid_t)); r = sd_bus_creds_get_pid(creds, (pid_t*) &leader); if (r < 0) return r; } manager_get_session_by_pid(m, leader, &session); if (session) { _cleanup_free_ char *path = NULL; _cleanup_close_ int fifo_fd = -1; /* Session already exists, client is probably * something like "su" which changes uid but is still * the same session */ fifo_fd = session_create_fifo(session); if (fifo_fd < 0) return fifo_fd; path = session_bus_path(session); if (!path) return -ENOMEM; return sd_bus_reply_method_return( message, "soshusub", session->id, path, session->user->runtime_path, fifo_fd, (uint32_t) session->user->uid, session->seat ? session->seat->id : "", (uint32_t) session->vtnr, true); } audit_session_from_pid(leader, &audit_id); if (audit_id > 0) { /* Keep our session IDs and the audit session IDs in sync */ if (asprintf(&id, "%lu", (unsigned long) audit_id) < 0) return -ENOMEM; /* Wut? There's already a session by this name and we * 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) 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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; Session *session; const char *name; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "s", &name); if (r < 0) return r; session = hashmap_get(m->sessions, name); if (!session) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name); session_release(session); return sd_bus_reply_method_return(message, NULL); } static int method_activate_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; Session *session; const char *name; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "s", &name); if (r < 0) return r; session = hashmap_get(m->sessions, name); if (!session) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name); r = session_activate(session); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_activate_session_on_seat(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { const char *session_name, *seat_name; Manager *m = userdata; Session *session; Seat *seat; int r; assert(bus); assert(message); assert(m); /* Same as ActivateSession() but refuses to work if * the seat doesn't match */ r = sd_bus_message_read(message, "ss", &session_name, &seat_name); if (r < 0) return r; session = hashmap_get(m->sessions, session_name); if (!session) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", session_name); seat = hashmap_get(m->seats, seat_name); if (!seat) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", seat_name); if (session->seat != seat) return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT, "Session %s not on seat %s", session_name, seat_name); r = session_activate(session); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_lock_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; Session *session; const char *name; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "s", &name); if (r < 0) return r; session = hashmap_get(m->sessions, name); if (!session) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name); r = session_send_lock(session, streq(sd_bus_message_get_member(message), "LockSession")); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_lock_sessions(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; int r; assert(bus); assert(message); assert(m); r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions")); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_kill_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { const char *name, *swho; Manager *m = userdata; Session *session; int32_t signo; KillWho who; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "ssi", &name, &swho, &signo); if (r < 0) return r; if (isempty(swho)) who = KILL_ALL; else { who = kill_who_from_string(swho); if (who < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho); } if (signo <= 0 || signo >= _NSIG) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo); session = hashmap_get(m->sessions, name); if (!session) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name); r = session_kill(session, who, signo); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_kill_user(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; uint32_t uid; int32_t signo; User *user; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "ui", &uid, &signo); if (r < 0) return r; if (signo <= 0 || signo >= _NSIG) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo); user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); if (!user) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user '%lu' known or logged in", (unsigned long) uid); r = user_kill(user, signo); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_terminate_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; const char *name; Session *session; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "s", &name); if (r < 0) return r; session = hashmap_get(m->sessions, name); if (!session) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name); r = session_stop(session); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_terminate_user(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; uint32_t uid; User *user; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "u", &uid); if (r < 0) return r; user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); if (!user) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user '%lu' known or logged in", (unsigned long) uid); r = user_stop(user); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_terminate_seat(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; const char *name; Seat *seat; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "s", &name); if (r < 0) return r; seat = hashmap_get(m->seats, name); if (!seat) return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name); r = seat_stop_sessions(seat); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_set_user_linger(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_free_ char *cc = NULL; Manager *m = userdata; int b, r; struct passwd *pw; const char *path; uint32_t uid; int interactive; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive); if (r < 0) return r; errno = 0; pw = getpwuid(uid); if (!pw) return errno ? -errno : -ENOENT; r = bus_verify_polkit_async(bus, &m->polkit_registry, message, "org.freedesktop.login1.set-user-linger", interactive, error, method_set_user_linger, m); if (r < 0) return r; if (r == 0) return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ mkdir_p_label("/var/lib/systemd", 0755); r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0); if (r < 0) return r; cc = cescape(pw->pw_name); if (!cc) return -ENOMEM; path = strappenda("/var/lib/systemd/linger/", cc); if (b) { User *u; r = touch(path); if (r < 0) return r; if (manager_add_user_by_uid(m, uid, &u) >= 0) user_start(u); } else { User *u; r = unlink(path); if (r < 0 && errno != ENOENT) return -errno; u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); if (u) user_add_to_gc_queue(u); } return sd_bus_reply_method_return(message, NULL); } static int trigger_device(Manager *m, struct udev_device *d) { _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"); } 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); label_init("/etc"); 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("Failed to open /etc/udev/rules.d: %m"); } else { struct dirent *de; while ((de = readdir(d))) { if (!dirent_is_file(de)) continue; if (!startswith(de->d_name, "72-seat-")) continue; if (!endswith(de->d_name, ".rules")) continue; if (unlinkat(dirfd(d), de->d_name, 0) < 0) log_warning("Failed to unlink %s: %m", de->d_name); } } return trigger_device(m, NULL); } static int method_attach_device(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { const char *sysfs, *seat; Manager *m = userdata; int interactive, r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive); if (r < 0) return r; if (!path_startswith(sysfs, "/sys")) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs); if (!seat_name_is_valid(seat)) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat %s is not valid", seat); r = bus_verify_polkit_async(bus, &m->polkit_registry, message, "org.freedesktop.login1.attach-device", interactive, error, method_attach_device, m); if (r < 0) return r; if (r == 0) return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ r = attach_device(m, seat, sysfs); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_flush_devices(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; int interactive, r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "b", &interactive); if (r < 0) return r; r = bus_verify_polkit_async(bus, &m->polkit_registry, message, "org.freedesktop.login1.flush-devices", interactive, error, method_flush_devices, m); if (r < 0) return r; if (r == 0) return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ r = flush_devices(m); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int have_multiple_sessions( Manager *m, uid_t uid) { Session *session; Iterator i; assert(m); /* Check for other users' sessions. Greeter sessions do not * 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; } return log_struct(LOG_NOTICE, MESSAGE_ID(SD_MESSAGE_SHUTDOWN), p, q, NULL); } static int execute_shutdown_or_sleep( Manager *m, InhibitWhat w, const char *unit_name, sd_bus_error *error) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; const char *p; char *c; int r; assert(m); assert(w >= 0); assert(w < _INHIBIT_WHAT_MAX); assert(unit_name); bus_manager_log_shutdown(m, w, unit_name); r = sd_bus_call_method( m->bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnit", error, &reply, "ss", unit_name, "replace-irreversibly"); if (r < 0) return r; r = sd_bus_message_read(reply, "o", &p); if (r < 0) return r; c = strdup(p); if (!c) return -ENOMEM; m->action_unit = unit_name; free(m->action_job); m->action_job = c; m->action_what = w; return 0; } static int delay_shutdown_or_sleep( Manager *m, InhibitWhat w, const char *unit_name) { assert(m); assert(w >= 0); assert(w < _INHIBIT_WHAT_MAX); assert(unit_name); m->action_timestamp = now(CLOCK_MONOTONIC); m->action_unit = unit_name; m->action_what = w; return 0; } static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) { static const char * const signal_name[_INHIBIT_WHAT_MAX] = { [INHIBIT_SHUTDOWN] = "PrepareForShutdown", [INHIBIT_SLEEP] = "PrepareForSleep" }; int active = _active; assert(m); assert(w >= 0); assert(w < _INHIBIT_WHAT_MAX); assert(signal_name[w]); return sd_bus_emit_signal(m->bus, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", signal_name[w], "b", active); } int bus_manager_shutdown_or_sleep_now_or_later( Manager *m, const char *unit_name, InhibitWhat w, sd_bus_error *error) { bool delayed; int r; assert(m); assert(unit_name); assert(w >= 0); assert(w <= _INHIBIT_WHAT_MAX); assert(!m->action_job); /* Tell everybody to prepare for shutdown/sleep */ send_prepare_for(m, w, true); delayed = m->inhibit_delay_max > 0 && manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL); if (delayed) /* Shutdown is delayed, keep in mind what we * 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 method_do_shutdown_or_sleep( Manager *m, sd_bus_message *message, const char *unit_name, InhibitWhat w, const char *action, const char *action_multiple_sessions, const char *action_ignore_inhibit, const char *sleep_verb, sd_bus_message_handler_t method, sd_bus_error *error) { _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; bool multiple_sessions, blocked; int interactive, r; uid_t uid; assert(m); assert(message); assert(unit_name); assert(w >= 0); assert(w <= _INHIBIT_WHAT_MAX); assert(action); assert(action_multiple_sessions); assert(action_ignore_inhibit); assert(method); r = sd_bus_message_read(message, "b", &interactive); if (r < 0) return r; /* Don't allow multiple jobs being executed at the same time */ if (m->action_what) return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress"); if (sleep_verb) { r = can_sleep(sleep_verb); if (r < 0) return r; if (r == 0) return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported"); } r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_UID, &creds); if (r < 0) return r; r = sd_bus_creds_get_uid(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_verify_polkit_async(m->bus, &m->polkit_registry, message, action_multiple_sessions, interactive, error, method, m); if (r < 0) return r; } if (blocked) { r = bus_verify_polkit_async(m->bus, &m->polkit_registry, message, action_ignore_inhibit, interactive, error, method, m); if (r < 0) return r; } if (!multiple_sessions && !blocked) { r = bus_verify_polkit_async(m->bus, &m->polkit_registry, message, action, interactive, error, method, m); if (r < 0) return r; } r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error); if (r < 0) return r; return sd_bus_reply_method_return(message, NULL); } static int method_poweroff(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_do_shutdown_or_sleep( m, message, SPECIAL_POWEROFF_TARGET, INHIBIT_SHUTDOWN, "org.freedesktop.login1.power-off", "org.freedesktop.login1.power-off-multiple-sessions", "org.freedesktop.login1.power-off-ignore-inhibit", NULL, method_poweroff, error); } static int method_reboot(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_do_shutdown_or_sleep( m, message, SPECIAL_REBOOT_TARGET, INHIBIT_SHUTDOWN, "org.freedesktop.login1.reboot", "org.freedesktop.login1.reboot-multiple-sessions", "org.freedesktop.login1.reboot-ignore-inhibit", NULL, method_reboot, error); } static int method_suspend(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_do_shutdown_or_sleep( m, message, SPECIAL_SUSPEND_TARGET, INHIBIT_SLEEP, "org.freedesktop.login1.suspend", "org.freedesktop.login1.suspend-multiple-sessions", "org.freedesktop.login1.suspend-ignore-inhibit", "suspend", method_suspend, error); } static int method_hibernate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_do_shutdown_or_sleep( m, message, SPECIAL_HIBERNATE_TARGET, INHIBIT_SLEEP, "org.freedesktop.login1.hibernate", "org.freedesktop.login1.hibernate-multiple-sessions", "org.freedesktop.login1.hibernate-ignore-inhibit", "hibernate", method_hibernate, error); } static int method_hybrid_sleep(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_do_shutdown_or_sleep( m, message, SPECIAL_HYBRID_SLEEP_TARGET, INHIBIT_SLEEP, "org.freedesktop.login1.hibernate", "org.freedesktop.login1.hibernate-multiple-sessions", "org.freedesktop.login1.hibernate-ignore-inhibit", "hybrid-sleep", method_hybrid_sleep, error); } static int method_can_shutdown_or_sleep( Manager *m, sd_bus_message *message, InhibitWhat w, const char *action, const char *action_multiple_sessions, const char *action_ignore_inhibit, const char *sleep_verb, sd_bus_error *error) { _cleanup_bus_creds_unref_ 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_UID, &creds); if (r < 0) return r; r = sd_bus_creds_get_uid(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_verify_polkit(m->bus, message, action_multiple_sessions, false, &challenge, error); if (r < 0) return r; if (r > 0) result = "yes"; else if (challenge) result = "challenge"; else result = "no"; } if (blocked) { r = bus_verify_polkit(m->bus, message, action_ignore_inhibit, false, &challenge, error); if (r < 0) return r; if (r > 0 && !result) result = "yes"; else if (challenge && (!result || streq(result, "yes"))) result = "challenge"; else result = "no"; } if (!multiple_sessions && !blocked) { /* If neither inhibit nor multiple sessions * apply then just check the normal policy */ r = bus_verify_polkit(m->bus, message, action, false, &challenge, error); if (r < 0) return r; if (r > 0) result = "yes"; else if (challenge) result = "challenge"; else result = "no"; } return sd_bus_reply_method_return(message, "s", result); } static int method_can_poweroff(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_can_shutdown_or_sleep( m, message, INHIBIT_SHUTDOWN, "org.freedesktop.login1.power-off", "org.freedesktop.login1.power-off-multiple-sessions", "org.freedesktop.login1.power-off-ignore-inhibit", NULL, error); } static int method_can_reboot(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_can_shutdown_or_sleep( m, message, INHIBIT_SHUTDOWN, "org.freedesktop.login1.reboot", "org.freedesktop.login1.reboot-multiple-sessions", "org.freedesktop.login1.reboot-ignore-inhibit", NULL, error); } static int method_can_suspend(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_can_shutdown_or_sleep( m, message, INHIBIT_SLEEP, "org.freedesktop.login1.suspend", "org.freedesktop.login1.suspend-multiple-sessions", "org.freedesktop.login1.suspend-ignore-inhibit", "suspend", error); } static int method_can_hibernate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_can_shutdown_or_sleep( m, message, INHIBIT_SLEEP, "org.freedesktop.login1.hibernate", "org.freedesktop.login1.hibernate-multiple-sessions", "org.freedesktop.login1.hibernate-ignore-inhibit", "hibernate", error); } static int method_can_hybrid_sleep(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; return method_can_shutdown_or_sleep( m, message, INHIBIT_SLEEP, "org.freedesktop.login1.hibernate", "org.freedesktop.login1.hibernate-multiple-sessions", "org.freedesktop.login1.hibernate-ignore-inhibit", "hybrid-sleep", error); } static int method_inhibit(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_bus_creds_unref_ 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(bus); assert(message); assert(m); r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode); if (r < 0) return r; w = inhibit_what_from_string(what); if (w <= 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid what specification %s", what); mm = inhibit_mode_from_string(mode); if (mm < 0) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid mode specification %s", mode); /* Delay is only supported for shutdown/sleep */ if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP))) return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delay inhibitors only supported for shutdown and sleep"); /* Don't allow taking delay locks while we are already * 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(bus, &m->polkit_registry, message, w == INHIBIT_SHUTDOWN ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") : w == INHIBIT_SLEEP ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep" : "org.freedesktop.login1.inhibit-delay-sleep") : w == INHIBIT_IDLE ? "org.freedesktop.login1.inhibit-block-idle" : w == INHIBIT_HANDLE_POWER_KEY ? "org.freedesktop.login1.inhibit-handle-power-key" : w == INHIBIT_HANDLE_SUSPEND_KEY ? "org.freedesktop.login1.inhibit-handle-suspend-key" : w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" : "org.freedesktop.login1.inhibit-handle-lid-switch", false, error, method_inhibit, m); if (r < 0) return r; if (r == 0) return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */ r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_UID|SD_BUS_CREDS_PID, &creds); if (r < 0) return r; r = sd_bus_creds_get_uid(creds, &uid); if (r < 0) return r; r = sd_bus_creds_get_pid(creds, &pid); if (r < 0) return r; do { free(id); id = NULL; if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0) return -ENOMEM; } while (hashmap_get(m->inhibitors, id)); r = manager_add_inhibitor(m, id, &i); if (r < 0) return r; i->what = w; i->mode = mm; i->pid = pid; i->uid = uid; i->why = strdup(why); i->who = strdup(who); if (!i->why || !i->who) { r = -ENOMEM; goto fail; } fifo_fd = inhibitor_create_fifo(i); if (fifo_fd < 0) { r = fifo_fd; goto fail; } inhibitor_start(i); return sd_bus_reply_method_return(message, "h", fifo_fd); fail: if (i) inhibitor_free(i); return r; } const sd_bus_vtable manager_vtable[] = { SD_BUS_VTABLE_START(0), SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), 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("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("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_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, 0), SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, 0), SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, 0), SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, 0), SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)), SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)), SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)), SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)), SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, SD_BUS_VTABLE_CAPABILITY(CAP_KILL)), 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("Inhibit", "ssss", "h", method_inhibit, 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_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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { const char *path, *result, *unit; Manager *m = userdata; Session *session; uint32_t id; User *user; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result); if (r < 0) { bus_log_parse_error(r); return r; } if (m->action_job && streq(m->action_job, path)) { log_info("Operation finished."); /* Tell people that they now may take a lock again */ send_prepare_for(m, m->action_what, false); free(m->action_job); m->action_job = NULL; m->action_unit = NULL; m->action_what = 0; return 0; } session = hashmap_get(m->session_units, unit); if (session) { if (streq_ptr(path, session->scope_job)) { free(session->scope_job); session->scope_job = NULL; } session_jobs_reply(session, unit, result); session_save(session); session_add_to_gc_queue(session); } user = hashmap_get(m->user_units, unit); if (user) { if (streq_ptr(path, user->service_job)) { free(user->service_job); user->service_job = NULL; } if (streq_ptr(path, user->slice_job)) { free(user->slice_job); user->slice_job = NULL; } 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 *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { const char *path, *unit; Manager *m = userdata; Session *session; User *user; int r; assert(bus); assert(message); assert(m); r = sd_bus_message_read(message, "so", &unit, &path); if (r < 0) { bus_log_parse_error(r); return r; } session = hashmap_get(m->session_units, unit); if (session) session_add_to_gc_queue(session); user = hashmap_get(m->user_units, unit); if (user) user_add_to_gc_queue(user); return 0; } int match_properties_changed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { _cleanup_free_ char *unit = NULL; Manager *m = userdata; const char *path; Session *session; User *user; int r; assert(bus); assert(message); assert(m); path = sd_bus_message_get_path(message); if (!path) return 0; r = unit_name_from_dbus_path(path, &unit); if (r < 0) return r; session = hashmap_get(m->session_units, unit); if (session) session_add_to_gc_queue(session); user = hashmap_get(m->user_units, unit); if (user) user_add_to_gc_queue(user); return 0; } int match_reloading(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { Manager *m = userdata; Session *session; Iterator i; int b, r; assert(bus); r = sd_bus_message_read(message, "b", &b); if (r < 0) { bus_log_parse_error(r); return r; } if (b) return 0; /* systemd finished reloading, let's recheck all our sessions */ log_debug("System manager has been reloaded, rechecking sessions..."); HASHMAP_FOREACH(session, m->sessions, i) session_add_to_gc_queue(session); return 0; } int match_name_owner_changed(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) { const char *name, *old, *new; Manager *m = userdata; Session *session; Iterator i; int r; char *key; r = sd_bus_message_read(message, "sss", &name, &old, &new); if (r < 0) { bus_log_parse_error(r); return r; } if (isempty(old) || !isempty(new)) return 0; key = set_remove(m->busnames, (char*) old); if (!key) return 0; /* Drop all controllers owned by this name */ free(key); HASHMAP_FOREACH(session, m->sessions, i) if (session_is_controller(session, old)) session_drop_controller(session); return 0; } int manager_send_changed(Manager *manager, const char *property, ...) { char **l; assert(manager); l = strv_from_stdarg_alloca(property); return sd_bus_emit_properties_changed_strv( manager->bus, "/org/freedesktop/login1", "org.freedesktop.login1.Manager", l); } int manager_dispatch_delayed(Manager *manager) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; Inhibitor *offending = NULL; int r; assert(manager); if (manager->action_what == 0 || manager->action_job) return 0; /* Continue delay? */ if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) { _cleanup_free_ char *comm = NULL, *u = NULL; get_process_comm(offending->pid, &comm); u = uid_to_name(offending->uid); if (manager->action_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC)) return 0; log_info("Delay lock is active (UID %lu/%s, PID %lu/%s) but inhibitor timeout is reached.", (unsigned long) offending->uid, strna(u), (unsigned long) offending->pid, strna(comm)); } /* Actually do the operation */ r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error); if (r < 0) { log_warning("Failed to send delayed message: %s", bus_error_message(&error, r)); manager->action_unit = NULL; manager->action_what = 0; return r; } return 1; } int manager_start_scope( Manager *manager, const char *scope, pid_t pid, const char *slice, const char *description, const char *after, const char *after2, sd_bus_error *error, char **job) { _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL; int r; assert(manager); assert(scope); assert(pid > 1); r = sd_bus_message_new_method_call( manager->bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartTransientUnit", &m); if (r < 0) return r; r = sd_bus_message_append(m, "ss", strempty(scope), "fail"); if (r < 0) return r; r = sd_bus_message_open_container(m, 'a', "(sv)"); if (r < 0) return r; if (!isempty(slice)) { r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice); if (r < 0) return r; } if (!isempty(description)) { r = sd_bus_message_append(m, "(sv)", "Description", "s", description); if (r < 0) return r; } if (!isempty(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_close_container(m); if (r < 0) return r; r = sd_bus_message_append(m, "a(sa(sv))", 0); if (r < 0) return r; r = sd_bus_call(manager->bus, m, 0, error, &reply); if (r < 0) return r; if (job) { const char *j; char *copy; r = sd_bus_message_read(reply, "o", &j); if (r < 0) return r; copy = strdup(j); if (!copy) return -ENOMEM; *job = copy; } return 1; } int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; int r; assert(manager); assert(unit); r = sd_bus_call_method( manager->bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartUnit", error, &reply, "ss", unit, "fail"); if (r < 0) return r; if (job) { const char *j; char *copy; r = sd_bus_message_read(reply, "o", &j); if (r < 0) return r; copy = strdup(j); if (!copy) return -ENOMEM; *job = copy; } return 1; } int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; int r; assert(manager); assert(unit); r = sd_bus_call_method( manager->bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StopUnit", error, &reply, "ss", unit, "fail"); if (r < 0) { if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) || sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) { if (job) *job = NULL; sd_bus_error_free(error); return 0; } return r; } if (job) { const char *j; char *copy; r = sd_bus_message_read(reply, "o", &j); if (r < 0) return r; copy = strdup(j); if (!copy) return -ENOMEM; *job = copy; } return 1; } int manager_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_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; _cleanup_free_ char *path = NULL; const char *state; int r; assert(manager); assert(unit); path = unit_dbus_path_from_name(unit); if (!path) return -ENOMEM; r = sd_bus_get_property( manager->bus, "org.freedesktop.systemd1", path, "org.freedesktop.systemd1.Unit", "ActiveState", &error, &reply, "s"); if (r < 0) { /* systemd might have droppped off momentarily, let's * 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_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; int r; assert(manager); assert(path); r = sd_bus_get_property( manager->bus, "org.freedesktop.systemd1", path, "org.freedesktop.systemd1.Job", "State", &error, &reply, "s"); if (r < 0) { if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) || sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED)) return true; if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT)) return false; return r; } /* We don't actually care about the state really. The fact * that we could read the job state is enough for us */ return true; }