X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flogin%2Flogind-dbus.c;h=890c5c6b1d1d78c46a1e380906f5fd1a871ef706;hp=0550d1bd1cc6b29ebe698c6d3e0a4644ed292d89;hb=872c8faaf2009422a91d227ae0b5c6f04c9d2c69;hpb=4bba9156da3e1df2cee24d10d7cd88c776ef4179 diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c index 0550d1bd1..890c5c6b1 100644 --- a/src/login/logind-dbus.c +++ b/src/login/logind-dbus.c @@ -6,16 +6,16 @@ Copyright 2011 Lennart Poettering systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + 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 - General Public License for more details. + Lesser General Public License for more details. - You should have received a copy of the GNU General Public License + You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see . ***/ @@ -27,8 +27,19 @@ #include "logind.h" #include "dbus-common.h" #include "strv.h" +#include "mkdir.h" +#include "path-util.h" #include "polkit.h" #include "special.h" +#include "sleep-config.h" +#include "systemd/sd-id128.h" +#include "systemd/sd-messages.h" +#include "fileio-label.h" +#include "label.h" +#include "utf8.h" +#include "unit-name.h" +#include "bus-errors.h" +#include "virt.h" #define BUS_MANAGER_INTERFACE \ " \n" \ @@ -36,10 +47,18 @@ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ @@ -56,8 +75,9 @@ " \n" \ " \n" \ " \n" \ - " \n" \ + " \n" \ " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ @@ -65,33 +85,41 @@ " \n" \ " \n" \ " \n" \ - " \n" \ - " \n" \ - " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ - " \n" \ - " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ - " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ @@ -121,6 +149,40 @@ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ @@ -145,9 +207,12 @@ " \n" \ " \n" \ " \n" \ - " \n" \ - " \n" \ - " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ @@ -155,6 +220,17 @@ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" #define INTROSPECTION_BEGIN \ @@ -205,26 +281,54 @@ static int bus_manager_append_idle_hint_since(DBusMessageIter *i, const char *pr return 0; } -static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMessage **_reply) { +static int bus_manager_append_inhibited(DBusMessageIter *i, const char *property, void *data) { + Manager *m = data; + InhibitWhat w; + const char *p; + + w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY); + p = inhibit_what_to_string(w); + + if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &p)) + return -ENOMEM; + + return 0; +} + +static int bus_manager_append_preparing(DBusMessageIter *i, const char *property, void *data) { + Manager *m = data; + dbus_bool_t b; + + assert(i); + assert(property); + + if (streq(property, "PreparingForShutdown")) + b = !!(m->action_what & INHIBIT_SHUTDOWN); + else + b = !!(m->action_what & INHIBIT_SLEEP); + + dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b); + return 0; +} + +static int bus_manager_create_session(Manager *m, DBusMessage *message) { + + const char *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *service; + uint32_t uid, leader, audit_id = 0; + _cleanup_free_ char *id = NULL; Session *session = NULL; User *user = NULL; - const char *type, *seat, *tty, *display, *remote_user, *remote_host, *service; - uint32_t uid, leader, audit_id = 0; - dbus_bool_t remote, kill_processes; - char **controllers = NULL, **reset_controllers = NULL; - SessionType t; - Seat *s; + Seat *seat = NULL; DBusMessageIter iter; - int r; - char *id = NULL, *p; + dbus_bool_t remote; uint32_t vtnr = 0; - int fifo_fd = -1; - DBusMessage *reply = NULL; + SessionType t; + SessionClass c; bool b; + int r; assert(m); assert(message); - assert(_reply); if (!dbus_message_iter_init(message, &iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) @@ -238,8 +342,7 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess dbus_message_iter_get_basic(&iter, &leader); - if (leader <= 0 || - !dbus_message_iter_next(&iter) || + if (!dbus_message_iter_next(&iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) return -EINVAL; @@ -250,20 +353,38 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess return -EINVAL; dbus_message_iter_get_basic(&iter, &type); - t = session_type_from_string(type); + if (isempty(type)) + t = _SESSION_TYPE_INVALID; + else { + t = session_type_from_string(type); + if (t < 0) + return -EINVAL; + } + + if (!dbus_message_iter_next(&iter) || + dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) + return -EINVAL; + + dbus_message_iter_get_basic(&iter, &class); + if (isempty(class)) + c = _SESSION_CLASS_INVALID; + else { + c = session_class_from_string(class); + if (c < 0) + return -EINVAL; + } - if (t < 0 || - !dbus_message_iter_next(&iter) || + if (!dbus_message_iter_next(&iter) || dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) return -EINVAL; - dbus_message_iter_get_basic(&iter, &seat); + dbus_message_iter_get_basic(&iter, &cseat); - if (isempty(seat)) - s = NULL; + if (isempty(cseat)) + seat = NULL; else { - s = hashmap_get(m->seats, seat); - if (!s) + seat = hashmap_get(m->seats, cseat); + if (!seat) return -ENOENT; } @@ -282,9 +403,9 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess if (tty_is_vc(tty)) { int v; - if (!s) - s = m->vtconsole; - else if (s != m->vtconsole) + if (!seat) + seat = m->seat0; + else if (seat != m->seat0) return -EINVAL; v = vtnr_from_tty(tty); @@ -296,16 +417,23 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess vtnr = (uint32_t) v; else if (vtnr != (uint32_t) v) return -EINVAL; + } else if (tty_is_console(tty)) { - } else if (!isempty(tty) && s && seat_is_vtconsole(s)) - return -EINVAL; + if (!seat) + seat = m->seat0; + else if (seat != m->seat0) + return -EINVAL; + + if (vtnr != 0) + return -EINVAL; + } - if (s) { - if (seat_is_vtconsole(s)) { - if (vtnr <= 0 || vtnr > 63) + if (seat) { + if (seat_has_vts(seat)) { + if (vtnr > 63) return -EINVAL; } else { - if (vtnr > 0) + if (vtnr != 0) return -EINVAL; } } @@ -320,6 +448,22 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) return -EINVAL; + if (t == _SESSION_TYPE_INVALID) { + if (!isempty(display)) + t = SESSION_X11; + else if (!isempty(tty)) + t = SESSION_TTY; + else + t = SESSION_UNSPECIFIED; + } + + if (c == _SESSION_CLASS_INVALID) { + if (!isempty(display) || !isempty(tty)) + c = SESSION_USER; + else + c = SESSION_BACKGROUND; + } + dbus_message_iter_get_basic(&iter, &remote); if (!dbus_message_iter_next(&iter) || @@ -334,110 +478,96 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess dbus_message_iter_get_basic(&iter, &remote_host); - if (!dbus_message_iter_next(&iter) || - dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || - dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) - return -EINVAL; - - r = bus_parse_strv_iter(&iter, &controllers); - if (r < 0) - return -EINVAL; - - if (strv_contains(controllers, "systemd") || - !dbus_message_iter_next(&iter) || - dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || - dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) { - r = -EINVAL; - goto fail; - } - - r = bus_parse_strv_iter(&iter, &reset_controllers); - if (r < 0) - goto fail; - - if (strv_contains(reset_controllers, "systemd") || - !dbus_message_iter_next(&iter) || - dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) { - r = -EINVAL; - goto fail; + if (leader <= 0) { + leader = bus_get_unix_process_id(m->bus, dbus_message_get_sender(message), NULL); + if (leader == 0) + return -EINVAL; } - dbus_message_iter_get_basic(&iter, &kill_processes); - - r = manager_add_user_by_uid(m, uid, &user); - if (r < 0) - goto fail; + manager_get_session_by_pid(m, leader, &session); + if (session) { + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + _cleanup_free_ char *path = NULL; + _cleanup_close_ int fifo_fd = -1; + dbus_bool_t exists; - audit_session_from_pid(leader, &audit_id); + /* Session already exists, client is probably + * something like "su" which changes uid but is still + * the same session */ - if (audit_id > 0) { - asprintf(&id, "%lu", (unsigned long) audit_id); + fifo_fd = session_create_fifo(session); + if (fifo_fd < 0) { + r = fifo_fd; + goto fail; + } - if (!id) { + path = session_bus_path(session); + if (!path) { r = -ENOMEM; goto fail; } - session = hashmap_get(m->sessions, id); - - if (session) { - free(id); - - fifo_fd = session_create_fifo(session); - if (fifo_fd < 0) { - r = fifo_fd; - goto fail; - } + reply = dbus_message_new_method_return(message); + if (!reply) { + r = -ENOMEM; + goto fail; + } - /* Session already exists, client is probably - * something like "su" which changes uid but - * is still the same audit session */ + cseat = session->seat ? session->seat->id : ""; + vtnr = session->vtnr; + exists = true; - reply = dbus_message_new_method_return(message); - if (!reply) { - r = -ENOMEM; - goto fail; - } + b = dbus_message_append_args( + reply, + DBUS_TYPE_STRING, &session->id, + DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_STRING, &session->user->runtime_path, + DBUS_TYPE_UNIX_FD, &fifo_fd, + DBUS_TYPE_STRING, &cseat, + DBUS_TYPE_UINT32, &vtnr, + DBUS_TYPE_BOOLEAN, &exists, + DBUS_TYPE_INVALID); + if (!b) { + r = -ENOMEM; + goto fail; + } - p = session_bus_path(session); - if (!p) { - r = -ENOMEM; - goto fail; - } + if (!dbus_connection_send(m->bus, reply, NULL)) { + r = -ENOMEM; + goto fail; + } - seat = session->seat ? session->seat->id : ""; - vtnr = session->vtnr; - b = dbus_message_append_args( - reply, - DBUS_TYPE_STRING, &session->id, - DBUS_TYPE_OBJECT_PATH, &p, - DBUS_TYPE_STRING, &session->user->runtime_path, - DBUS_TYPE_UNIX_FD, &fifo_fd, - DBUS_TYPE_STRING, &seat, - DBUS_TYPE_UINT32, &vtnr, - DBUS_TYPE_INVALID); - free(p); + return 0; + } - if (!b) { - r = -ENOMEM; - goto fail; - } + audit_session_from_pid(leader, &audit_id); + if (audit_id > 0) { + /* Keep our session IDs and the audit session IDs in sync */ - close_nointr_nofail(fifo_fd); - *_reply = reply; + if (asprintf(&id, "%lu", (unsigned long) audit_id) < 0) { + r = -ENOMEM; + goto fail; + } - strv_free(controllers); - strv_free(reset_controllers); + /* 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; - return 0; + free(id); + id = NULL; } + } - } else { + if (!id) { do { free(id); - asprintf(&id, "c%lu", ++m->session_counter); + id = NULL; - if (!id) { + if (asprintf(&id, "c%lu", ++m->session_counter) < 0) { r = -ENOMEM; goto fail; } @@ -445,22 +575,23 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess } while (hashmap_get(m->sessions, id)); } - r = manager_add_session(m, user, id, &session); - free(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->controllers = controllers; - session->reset_controllers = reset_controllers; - session->kill_processes = kill_processes; session->vtnr = vtnr; - controllers = reset_controllers = NULL; - if (!isempty(tty)) { session->tty = strdup(tty); if (!session->tty) { @@ -501,14 +632,8 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess } } - fifo_fd = session_create_fifo(session); - if (fifo_fd < 0) { - r = fifo_fd; - goto fail; - } - - if (s) { - r = seat_attach_session(s, session); + if (seat) { + r = seat_attach_session(seat, session); if (r < 0) goto fail; } @@ -517,56 +642,173 @@ static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMess if (r < 0) goto fail; - reply = dbus_message_new_method_return(message); - if (!reply) { - r = -ENOMEM; + session->create_message = dbus_message_ref(message); + + /* Now, let's wait until the slice unit and stuff got + * created. We send the reply back from + * session_send_create_reply().*/ + + return 0; + +fail: + if (session) + session_add_to_gc_queue(session); + + if (user) + user_add_to_gc_queue(user); + + return r; +} + +static int bus_manager_inhibit( + Manager *m, + DBusConnection *connection, + DBusMessage *message, + DBusError *error, + DBusMessage **_reply) { + + Inhibitor *i = NULL; + char *id = NULL; + const char *who, *why, *what, *mode; + pid_t pid; + InhibitWhat w; + InhibitMode mm; + unsigned long ul; + int r, fifo_fd = -1; + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + + assert(m); + assert(connection); + assert(message); + assert(error); + assert(_reply); + + if (!dbus_message_get_args( + message, + error, + DBUS_TYPE_STRING, &what, + DBUS_TYPE_STRING, &who, + DBUS_TYPE_STRING, &why, + DBUS_TYPE_STRING, &mode, + DBUS_TYPE_INVALID)) { + r = -EIO; + goto fail; + } + + w = inhibit_what_from_string(what); + if (w <= 0) { + r = -EINVAL; + goto fail; + } + + mm = inhibit_mode_from_string(mode); + if (mm < 0) { + r = -EINVAL; + goto fail; + } + + /* Delay is only supported for shutdown/sleep */ + if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP))) { + r = -EINVAL; goto fail; } - p = session_bus_path(session); - if (!p) { + /* Don't allow taking delay locks while we are already + * executing the operation. We shouldn't create the impression + * that the lock was successful if the machine is about to go + * down/suspend any moment. */ + if (m->action_what & w) { + r = -EALREADY; + goto fail; + } + + r = verify_polkit(connection, message, + w == INHIBIT_SHUTDOWN ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") : + w == INHIBIT_SLEEP ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep" : "org.freedesktop.login1.inhibit-delay-sleep") : + w == INHIBIT_IDLE ? "org.freedesktop.login1.inhibit-block-idle" : + w == INHIBIT_HANDLE_POWER_KEY ? "org.freedesktop.login1.inhibit-handle-power-key" : + w == INHIBIT_HANDLE_SUSPEND_KEY ? "org.freedesktop.login1.inhibit-handle-suspend-key" : + w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" : + "org.freedesktop.login1.inhibit-handle-lid-switch", + false, NULL, error); + if (r < 0) + goto fail; + + ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error); + if (ul == (unsigned long) -1) { + r = -EIO; + goto fail; + } + + pid = bus_get_unix_process_id(connection, dbus_message_get_sender(message), error); + if (pid <= 0) { + r = -EIO; + goto fail; + } + + do { + free(id); + id = NULL; + + if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0) { + r = -ENOMEM; + goto fail; + } + } while (hashmap_get(m->inhibitors, id)); + + r = manager_add_inhibitor(m, id, &i); + free(id); + + if (r < 0) + goto fail; + + i->what = w; + i->mode = mm; + i->pid = pid; + i->uid = (uid_t) ul; + i->why = strdup(why); + i->who = strdup(who); + + if (!i->why || !i->who) { r = -ENOMEM; goto fail; } - seat = s ? s->id : ""; - b = dbus_message_append_args( - reply, - DBUS_TYPE_STRING, &session->id, - DBUS_TYPE_OBJECT_PATH, &p, - DBUS_TYPE_STRING, &session->user->runtime_path, - DBUS_TYPE_UNIX_FD, &fifo_fd, - DBUS_TYPE_STRING, &seat, - DBUS_TYPE_UINT32, &vtnr, - DBUS_TYPE_INVALID); - free(p); + fifo_fd = inhibitor_create_fifo(i); + if (fifo_fd < 0) { + r = fifo_fd; + goto fail; + } - if (!b) { + reply = dbus_message_new_method_return(message); + if (!reply) { + r = -ENOMEM; + goto fail; + } + + if (!dbus_message_append_args( + reply, + DBUS_TYPE_UNIX_FD, &fifo_fd, + DBUS_TYPE_INVALID)) { r = -ENOMEM; goto fail; } close_nointr_nofail(fifo_fd); *_reply = reply; + reply = NULL; + + inhibitor_start(i); return 0; fail: - strv_free(controllers); - strv_free(reset_controllers); - - if (session) - session_add_to_gc_queue(session); - - if (user) - user_add_to_gc_queue(user); + if (i) + inhibitor_free(i); if (fifo_fd >= 0) close_nointr_nofail(fifo_fd); - if (reply) - dbus_message_unref(reply); - return r; } @@ -608,7 +850,7 @@ static int trigger_device(Manager *m, struct udev_device *d) { goto finish; } - write_one_line_file(t, "change"); + write_string_file(t, "change"); free(t); } @@ -623,7 +865,7 @@ finish: static int attach_device(Manager *m, const char *seat, const char *sysfs) { struct udev_device *d; - char *rule = NULL, *file = NULL; + _cleanup_free_ char *rule = NULL, *file = NULL; const char *id_for_seat; int r; @@ -656,17 +898,15 @@ static int attach_device(Manager *m, const char *seat, const char *sysfs) { goto finish; } - mkdir_p("/etc/udev/rules.d", 0755); - r = write_one_line_file_atomic(file, rule); + mkdir_p_label("/etc/udev/rules.d", 0755); + label_init("/etc"); + r = write_string_file_atomic_label(file, rule); if (r < 0) goto finish; r = trigger_device(m, d); finish: - free(rule); - free(file); - if (d) udev_device_unref(d); @@ -674,7 +914,7 @@ finish: } static int flush_devices(Manager *m) { - DIR *d; + _cleanup_closedir_ DIR *d; assert(m); @@ -699,45 +939,436 @@ static int flush_devices(Manager *m) { if (unlinkat(dirfd(d), de->d_name, 0) < 0) log_warning("Failed to unlink %s: %m", de->d_name); } - - closedir(d); } return trigger_device(m, NULL); } -static DBusHandlerResult manager_message_handler( - DBusConnection *connection, - DBusMessage *message, - void *userdata) { +static int have_multiple_sessions( + Manager *m, + uid_t uid) { - Manager *m = userdata; + Session *session; + Iterator i; - const BusProperty properties[] = { - { "org.freedesktop.login1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_path }, - { "org.freedesktop.login1.Manager", "Controllers", bus_property_append_strv, "as", m->controllers }, - { "org.freedesktop.login1.Manager", "ResetControllers", bus_property_append_strv, "as", m->reset_controllers }, - { "org.freedesktop.login1.Manager", "NAutoVTs", bus_property_append_unsigned, "u", &m->n_autovts }, - { "org.freedesktop.login1.Manager", "KillOnlyUsers", bus_property_append_strv, "as", m->kill_only_users }, - { "org.freedesktop.login1.Manager", "KillExcludeUsers", bus_property_append_strv, "as", m->kill_exclude_users }, - { "org.freedesktop.login1.Manager", "KillUserProcesses", bus_property_append_bool, "b", &m->kill_user_processes }, - { "org.freedesktop.login1.Manager", "IdleHint", bus_manager_append_idle_hint, "b", m }, - { "org.freedesktop.login1.Manager", "IdleSinceHint", bus_manager_append_idle_hint_since, "t", m }, - { "org.freedesktop.login1.Manager", "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", m }, - { NULL, NULL, NULL, NULL, NULL } - }; + assert(m); - DBusError error; - DBusMessage *reply = NULL; - int r; + /* Check for other users' sessions. Greeter sessions do not + * count, and non-login sessions do not count either. */ + HASHMAP_FOREACH(session, m->sessions, i) + if (session->class == SESSION_USER && + !session->closing && + session->user->uid != uid) + return true; - assert(connection); - assert(message); - assert(m); + return false; +} - dbus_error_init(&error); +static int bus_manager_log_shutdown( + Manager *m, + InhibitWhat w, + const char *unit_name) { - if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSession")) { + const char *p, *q; + + assert(m); + assert(unit_name); + + if (w != INHIBIT_SHUTDOWN) + return 0; + + if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) { + p = "MESSAGE=System is powering down."; + q = "SHUTDOWN=power-off"; + } else if (streq(unit_name, SPECIAL_HALT_TARGET)) { + p = "MESSAGE=System is halting."; + q = "SHUTDOWN=halt"; + } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) { + p = "MESSAGE=System is rebooting."; + q = "SHUTDOWN=reboot"; + } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) { + p = "MESSAGE=System is rebooting with kexec."; + q = "SHUTDOWN=kexec"; + } else { + p = "MESSAGE=System is shutting down."; + q = NULL; + } + + return log_struct(LOG_NOTICE, MESSAGE_ID(SD_MESSAGE_SHUTDOWN), + p, + q, NULL); +} + +static int execute_shutdown_or_sleep( + Manager *m, + InhibitWhat w, + const char *unit_name, + DBusError *error) { + + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + const char *mode = "replace-irreversibly", *p; + int r; + char *c; + + assert(m); + assert(w >= 0); + assert(w < _INHIBIT_WHAT_MAX); + assert(unit_name); + + bus_manager_log_shutdown(m, w, unit_name); + + r = bus_method_call_with_reply( + m->bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "StartUnit", + &reply, + error, + DBUS_TYPE_STRING, &unit_name, + DBUS_TYPE_STRING, &mode, + DBUS_TYPE_INVALID); + if (r < 0) + return r; + + if (!dbus_message_get_args( + reply, + error, + DBUS_TYPE_OBJECT_PATH, &p, + DBUS_TYPE_INVALID)) + return -EINVAL; + + c = strdup(p); + if (!c) + return -ENOMEM; + + m->action_unit = unit_name; + free(m->action_job); + m->action_job = c; + m->action_what = w; + + return 0; +} + +static int delay_shutdown_or_sleep( + Manager *m, + InhibitWhat w, + const char *unit_name) { + + assert(m); + assert(w >= 0); + assert(w < _INHIBIT_WHAT_MAX); + assert(unit_name); + + m->action_timestamp = now(CLOCK_MONOTONIC); + m->action_unit = unit_name; + m->action_what = w; + + return 0; +} + +static int bus_manager_can_shutdown_or_sleep( + Manager *m, + DBusConnection *connection, + DBusMessage *message, + InhibitWhat w, + const char *action, + const char *action_multiple_sessions, + const char *action_ignore_inhibit, + const char *sleep_verb, + DBusError *error, + DBusMessage **_reply) { + + bool multiple_sessions, challenge, blocked, b; + const char *result = NULL; + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + int r; + unsigned long ul; + + assert(m); + assert(connection); + assert(message); + assert(w >= 0); + assert(w <= _INHIBIT_WHAT_MAX); + assert(action); + assert(action_multiple_sessions); + assert(action_ignore_inhibit); + assert(error); + assert(_reply); + + if (sleep_verb) { + r = can_sleep(sleep_verb); + if (r < 0) + return r; + if (r == 0) { + result = "na"; + goto finish; + } + } + + ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error); + if (ul == (unsigned long) -1) + return -EIO; + + r = have_multiple_sessions(m, (uid_t) ul); + if (r < 0) + return r; + + multiple_sessions = r > 0; + blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, (uid_t) ul); + + if (multiple_sessions) { + r = verify_polkit(connection, message, action_multiple_sessions, false, &challenge, error); + if (r < 0) + return r; + + if (r > 0) + result = "yes"; + else if (challenge) + result = "challenge"; + else + result = "no"; + } + + if (blocked) { + r = verify_polkit(connection, message, action_ignore_inhibit, false, &challenge, error); + if (r < 0) + return r; + + if (r > 0 && !result) + result = "yes"; + else if (challenge && (!result || streq(result, "yes"))) + result = "challenge"; + else + result = "no"; + } + + if (!multiple_sessions && !blocked) { + /* If neither inhibit nor multiple sessions + * apply then just check the normal policy */ + + r = verify_polkit(connection, message, action, false, &challenge, error); + if (r < 0) + return r; + + if (r > 0) + result = "yes"; + else if (challenge) + result = "challenge"; + else + result = "no"; + } + +finish: + reply = dbus_message_new_method_return(message); + if (!reply) + return -ENOMEM; + + b = dbus_message_append_args( + reply, + DBUS_TYPE_STRING, &result, + DBUS_TYPE_INVALID); + if (!b) + return -ENOMEM; + + *_reply = reply; + reply = NULL; + return 0; +} + +static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) { + static const char * const signal_name[_INHIBIT_WHAT_MAX] = { + [INHIBIT_SHUTDOWN] = "PrepareForShutdown", + [INHIBIT_SLEEP] = "PrepareForSleep" + }; + + dbus_bool_t active = _active; + _cleanup_dbus_message_unref_ DBusMessage *message = NULL; + + assert(m); + assert(w >= 0); + assert(w < _INHIBIT_WHAT_MAX); + assert(signal_name[w]); + + message = dbus_message_new_signal("/org/freedesktop/login1", "org.freedesktop.login1.Manager", signal_name[w]); + if (!message) + return -ENOMEM; + + if (!dbus_message_append_args(message, DBUS_TYPE_BOOLEAN, &active, DBUS_TYPE_INVALID) || + !dbus_connection_send(m->bus, message, NULL)) + return -ENOMEM; + + return 0; +} + +int bus_manager_shutdown_or_sleep_now_or_later( + Manager *m, + const char *unit_name, + InhibitWhat w, + DBusError *error) { + + bool delayed; + int r; + + assert(m); + assert(unit_name); + assert(w >= 0); + assert(w <= _INHIBIT_WHAT_MAX); + assert(!m->action_job); + + /* Tell everybody to prepare for shutdown/sleep */ + send_prepare_for(m, w, true); + + delayed = + m->inhibit_delay_max > 0 && + manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0); + + if (delayed) + /* Shutdown is delayed, keep in mind what we + * want to do, and start a timeout */ + r = delay_shutdown_or_sleep(m, w, unit_name); + else + /* Shutdown is not delayed, execute it + * immediately */ + r = execute_shutdown_or_sleep(m, w, unit_name, error); + + return r; +} + +static int bus_manager_do_shutdown_or_sleep( + Manager *m, + DBusConnection *connection, + DBusMessage *message, + const char *unit_name, + InhibitWhat w, + const char *action, + const char *action_multiple_sessions, + const char *action_ignore_inhibit, + const char *sleep_verb, + DBusError *error, + DBusMessage **_reply) { + + dbus_bool_t interactive; + bool multiple_sessions, blocked; + DBusMessage *reply = NULL; + int r; + unsigned long ul; + + assert(m); + assert(connection); + assert(message); + assert(unit_name); + assert(w >= 0); + assert(w <= _INHIBIT_WHAT_MAX); + assert(action); + assert(action_multiple_sessions); + assert(action_ignore_inhibit); + assert(error); + assert(_reply); + + /* Don't allow multiple jobs being executed at the same time */ + if (m->action_what) + return -EALREADY; + + if (!dbus_message_get_args( + message, + error, + DBUS_TYPE_BOOLEAN, &interactive, + DBUS_TYPE_INVALID)) + return -EINVAL; + + if (sleep_verb) { + r = can_sleep(sleep_verb); + if (r < 0) + return r; + + if (r == 0) + return -ENOTSUP; + } + + ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error); + if (ul == (unsigned long) -1) + return -EIO; + + r = have_multiple_sessions(m, (uid_t) ul); + if (r < 0) + return r; + + multiple_sessions = r > 0; + blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, (uid_t) ul); + + if (multiple_sessions) { + r = verify_polkit(connection, message, action_multiple_sessions, interactive, NULL, error); + if (r < 0) + return r; + } + + if (blocked) { + r = verify_polkit(connection, message, action_ignore_inhibit, interactive, NULL, error); + if (r < 0) + return r; + } + + if (!multiple_sessions && !blocked) { + r = verify_polkit(connection, message, action, interactive, NULL, 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; + + reply = dbus_message_new_method_return(message); + if (!reply) + return -ENOMEM; + + *_reply = reply; + return 0; +} + +static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_handle_action, handle_action, HandleAction); + +static const BusProperty bus_login_manager_properties[] = { + { "NAutoVTs", bus_property_append_unsigned, "u", offsetof(Manager, n_autovts) }, + { "KillOnlyUsers", bus_property_append_strv, "as", offsetof(Manager, kill_only_users), true }, + { "KillExcludeUsers", bus_property_append_strv, "as", offsetof(Manager, kill_exclude_users), true }, + { "KillUserProcesses", bus_property_append_bool, "b", offsetof(Manager, kill_user_processes) }, + { "IdleHint", bus_manager_append_idle_hint, "b", 0 }, + { "IdleSinceHint", bus_manager_append_idle_hint_since, "t", 0 }, + { "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", 0 }, + { "BlockInhibited", bus_manager_append_inhibited, "s", 0 }, + { "DelayInhibited", bus_manager_append_inhibited, "s", 0 }, + { "InhibitDelayMaxUSec", bus_property_append_usec, "t", offsetof(Manager, inhibit_delay_max) }, + { "HandlePowerKey", bus_manager_append_handle_action, "s", offsetof(Manager, handle_power_key) }, + { "HandleSuspendKey", bus_manager_append_handle_action, "s", offsetof(Manager, handle_suspend_key) }, + { "HandleHibernateKey", bus_manager_append_handle_action, "s", offsetof(Manager, handle_hibernate_key)}, + { "HandleLidSwitch", bus_manager_append_handle_action, "s", offsetof(Manager, handle_lid_switch) }, + { "IdleAction", bus_manager_append_handle_action, "s", offsetof(Manager, idle_action) }, + { "IdleActionUSec", bus_property_append_usec, "t", offsetof(Manager, idle_action_usec) }, + { "PreparingForShutdown", bus_manager_append_preparing, "b", 0 }, + { "PreparingForSleep", bus_manager_append_preparing, "b", 0 }, + { NULL, } +}; + +static DBusHandlerResult manager_message_handler( + DBusConnection *connection, + DBusMessage *message, + void *userdata) { + + Manager *m = userdata; + + DBusError error; + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + int r; + + assert(connection); + assert(message); + assert(m); + + dbus_error_init(&error); + + if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSession")) { const char *name; char *p; Session *session; @@ -771,6 +1402,40 @@ static DBusHandlerResult manager_message_handler( if (!b) goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSessionByPID")) { + uint32_t pid; + char *p; + Session *session; + bool b; + + if (!dbus_message_get_args( + message, + &error, + DBUS_TYPE_UINT32, &pid, + DBUS_TYPE_INVALID)) + return bus_send_error_reply(connection, message, &error, -EINVAL); + + r = manager_get_session_by_pid(m, pid, &session); + if (r <= 0) + return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT); + + reply = dbus_message_new_method_return(message); + if (!reply) + goto oom; + + p = session_bus_path(session); + if (!p) + goto oom; + + b = dbus_message_append_args( + reply, + DBUS_TYPE_OBJECT_PATH, &p, + DBUS_TYPE_INVALID); + free(p); + + if (!b) + goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUser")) { uint32_t uid; char *p; @@ -805,6 +1470,40 @@ static DBusHandlerResult manager_message_handler( if (!b) goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUserByPID")) { + uint32_t pid; + char *p; + User *user; + bool b; + + if (!dbus_message_get_args( + message, + &error, + DBUS_TYPE_UINT32, &pid, + DBUS_TYPE_INVALID)) + return bus_send_error_reply(connection, message, &error, -EINVAL); + + r = manager_get_user_by_pid(m, pid, &user); + if (r <= 0) + return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT); + + reply = dbus_message_new_method_return(message); + if (!reply) + goto oom; + + p = user_bus_path(user); + if (!p) + goto oom; + + b = dbus_message_append_args( + reply, + DBUS_TYPE_OBJECT_PATH, &p, + DBUS_TYPE_INVALID); + free(p); + + if (!b) + goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) { const char *name; char *p; @@ -887,7 +1586,6 @@ static DBusHandlerResult manager_message_handler( goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) { - char *p; User *user; Iterator i; DBusMessageIter iter, sub; @@ -902,6 +1600,7 @@ static DBusHandlerResult manager_message_handler( goto oom; HASHMAP_FOREACH(user, m->users, i) { + _cleanup_free_ char *p = NULL; DBusMessageIter sub2; uint32_t uid; @@ -921,8 +1620,6 @@ static DBusHandlerResult manager_message_handler( goto oom; } - free(p); - if (!dbus_message_iter_close_container(&sub, &sub2)) goto oom; } @@ -931,7 +1628,6 @@ static DBusHandlerResult manager_message_handler( goto oom; } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) { - char *p; Seat *seat; Iterator i; DBusMessageIter iter, sub; @@ -946,6 +1642,7 @@ static DBusHandlerResult manager_message_handler( goto oom; HASHMAP_FOREACH(seat, m->seats, i) { + _cleanup_free_ char *p = NULL; DBusMessageIter sub2; if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) @@ -961,7 +1658,49 @@ static DBusHandlerResult manager_message_handler( goto oom; } - free(p); + if (!dbus_message_iter_close_container(&sub, &sub2)) + goto oom; + } + + if (!dbus_message_iter_close_container(&iter, &sub)) + goto oom; + + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListInhibitors")) { + Inhibitor *inhibitor; + Iterator i; + DBusMessageIter iter, sub; + + reply = dbus_message_new_method_return(message); + if (!reply) + goto oom; + + dbus_message_iter_init_append(reply, &iter); + + if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssuu)", &sub)) + goto oom; + + HASHMAP_FOREACH(inhibitor, m->inhibitors, i) { + DBusMessageIter sub2; + dbus_uint32_t uid, pid; + const char *what, *who, *why, *mode; + + if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) + goto oom; + + what = strempty(inhibit_what_to_string(inhibitor->what)); + who = strempty(inhibitor->who); + why = strempty(inhibitor->why); + mode = strempty(inhibit_mode_to_string(inhibitor->mode)); + uid = (dbus_uint32_t) inhibitor->uid; + pid = (dbus_uint32_t) inhibitor->pid; + + if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &what) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &who) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &why) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &mode) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &pid)) + goto oom; if (!dbus_message_iter_close_container(&sub, &sub2)) goto oom; @@ -970,9 +1709,18 @@ static DBusHandlerResult manager_message_handler( if (!dbus_message_iter_close_container(&iter, &sub)) goto oom; + + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Inhibit")) { + + r = bus_manager_inhibit(m, connection, message, &error, &reply); + + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateSession")) { - r = bus_manager_create_session(m, message, &reply); + r = bus_manager_create_session(m, message); /* Don't delay the work on OOM here, since it might be * triggered by a low RLIMIT_NOFILE here (since we @@ -980,23 +1728,85 @@ static DBusHandlerResult manager_message_handler( * see this fail quickly then be retried later */ if (r < 0) - return bus_send_error_reply(connection, message, &error, r); + return bus_send_error_reply(connection, message, NULL, r); + + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ReleaseSession")) { + const char *name; + Session *session; + + if (!dbus_message_get_args( + message, + &error, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_INVALID)) + return bus_send_error_reply(connection, message, &error, -EINVAL); + + session = hashmap_get(m->sessions, name); + if (!session) + return bus_send_error_reply(connection, message, &error, -ENOENT); + + /* We use the FIFO to detect stray sessions where the + process invoking PAM dies abnormally. We need to make + sure that that process is not killed if at the clean + end of the session it closes the FIFO. Hence, with + this call explicitly turn off the FIFO logic, so that + the PAM code can finish clean up on its own */ + session_remove_fifo(session); + + reply = dbus_message_new_method_return(message); + if (!reply) + goto oom; + + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSession")) { + const char *name; + Session *session; + + if (!dbus_message_get_args( + message, + &error, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_INVALID)) + return bus_send_error_reply(connection, message, &error, -EINVAL); + + session = hashmap_get(m->sessions, name); + if (!session) + return bus_send_error_reply(connection, message, &error, -ENOENT); + + r = session_activate(session); + if (r < 0) + return bus_send_error_reply(connection, message, NULL, r); - } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSession")) { - const char *name; + reply = dbus_message_new_method_return(message); + if (!reply) + goto oom; + + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSessionOnSeat")) { + const char *session_name, *seat_name; Session *session; + Seat *seat; + + /* Same as ActivateSession() but refuses to work if + * the seat doesn't match */ if (!dbus_message_get_args( message, &error, - DBUS_TYPE_STRING, &name, + DBUS_TYPE_STRING, &session_name, + DBUS_TYPE_STRING, &seat_name, DBUS_TYPE_INVALID)) return bus_send_error_reply(connection, message, &error, -EINVAL); - session = hashmap_get(m->sessions, name); + session = hashmap_get(m->sessions, session_name); if (!session) return bus_send_error_reply(connection, message, &error, -ENOENT); + seat = hashmap_get(m->seats, seat_name); + if (!seat) + return bus_send_error_reply(connection, message, &error, -ENOENT); + + if (session->seat != seat) + return bus_send_error_reply(connection, message, &error, -EINVAL); + r = session_activate(session); if (r < 0) return bus_send_error_reply(connection, message, NULL, r); @@ -1019,7 +1829,7 @@ static DBusHandlerResult manager_message_handler( session = hashmap_get(m->sessions, name); if (!session) - return bus_send_error_reply(connection, message, &error, -ENOENT); + return bus_send_error_reply(connection, message, NULL, -ENOENT); if (session_send_lock(session, streq(dbus_message_get_member(message), "LockSession")) < 0) goto oom; @@ -1028,6 +1838,17 @@ static DBusHandlerResult manager_message_handler( if (!reply) goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSessions") || + dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "UnlockSessions")) { + + r = session_send_lock_all(m, streq(dbus_message_get_member(message), "LockSessions")); + if (r < 0) + bus_send_error_reply(connection, message, NULL, r); + + reply = dbus_message_new_method_return(message); + if (!reply) + goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillSession")) { const char *swho; int32_t signo; @@ -1184,11 +2005,13 @@ static DBusHandlerResult manager_message_handler( if (!pw) return bus_send_error_reply(connection, message, NULL, errno ? -errno : -EINVAL); - r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, &error); + r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, NULL, &error); if (r < 0) return bus_send_error_reply(connection, message, &error, r); - r = safe_mkdir("/var/lib/systemd/linger", 0755, 0, 0); + mkdir_p_label("/var/lib/systemd", 0755); + + r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0); if (r < 0) return bus_send_error_reply(connection, message, &error, r); @@ -1242,7 +2065,7 @@ static DBusHandlerResult manager_message_handler( if (!path_startswith(sysfs, "/sys") || !seat_name_is_valid(seat)) return bus_send_error_reply(connection, message, NULL, -EINVAL); - r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, &error); + r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, NULL, &error); if (r < 0) return bus_send_error_reply(connection, message, &error, r); @@ -1265,7 +2088,7 @@ static DBusHandlerResult manager_message_handler( DBUS_TYPE_INVALID)) return bus_send_error_reply(connection, message, &error, -EINVAL); - r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, &error); + r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, NULL, &error); if (r < 0) return bus_send_error_reply(connection, message, &error, r); @@ -1277,91 +2100,129 @@ static DBusHandlerResult manager_message_handler( if (!reply) goto oom; - } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "PowerOff") || - dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Reboot")) { - dbus_bool_t interactive; - bool multiple_sessions; - DBusMessage *forward, *freply; - const char *name; - const char *mode = "replace"; - const char *action; - - if (!dbus_message_get_args( - message, - &error, - DBUS_TYPE_BOOLEAN, &interactive, - DBUS_TYPE_INVALID)) - return bus_send_error_reply(connection, message, &error, -EINVAL); - - multiple_sessions = hashmap_size(m->sessions) > 1; - - if (!multiple_sessions) { - Session *s; - - /* Hmm, there's only one session, but let's - * make sure it actually belongs to the user - * who is asking. If not, better be safe than - * sorry. */ - - s = hashmap_first(m->sessions); - if (s) { - unsigned long ul; - - ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), &error); - if (ul == (unsigned long) -1) - return bus_send_error_reply(connection, message, &error, -EIO); - - multiple_sessions = s->user->uid != ul; - } - } - - if (streq(dbus_message_get_member(message), "PowerOff")) { - if (multiple_sessions) - action = "org.freedesktop.login1.power-off-multiple-sessions"; - else - action = "org.freedesktop.login1.power-off"; - - name = SPECIAL_POWEROFF_TARGET; - } else { - if (multiple_sessions) - action = "org.freedesktop.login1.reboot-multiple-sessions"; - else - action = "org.freedesktop.login1.reboot"; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "PowerOff")) { + + r = bus_manager_do_shutdown_or_sleep( + m, connection, message, + SPECIAL_POWEROFF_TARGET, + INHIBIT_SHUTDOWN, + "org.freedesktop.login1.power-off", + "org.freedesktop.login1.power-off-multiple-sessions", + "org.freedesktop.login1.power-off-ignore-inhibit", + NULL, + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Reboot")) { + r = bus_manager_do_shutdown_or_sleep( + m, connection, message, + SPECIAL_REBOOT_TARGET, + INHIBIT_SHUTDOWN, + "org.freedesktop.login1.reboot", + "org.freedesktop.login1.reboot-multiple-sessions", + "org.freedesktop.login1.reboot-ignore-inhibit", + NULL, + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); - name = SPECIAL_REBOOT_TARGET; - } + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Suspend")) { + r = bus_manager_do_shutdown_or_sleep( + m, connection, message, + SPECIAL_SUSPEND_TARGET, + INHIBIT_SLEEP, + "org.freedesktop.login1.suspend", + "org.freedesktop.login1.suspend-multiple-sessions", + "org.freedesktop.login1.suspend-ignore-inhibit", + "suspend", + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Hibernate")) { + r = bus_manager_do_shutdown_or_sleep( + m, connection, message, + SPECIAL_HIBERNATE_TARGET, + INHIBIT_SLEEP, + "org.freedesktop.login1.hibernate", + "org.freedesktop.login1.hibernate-multiple-sessions", + "org.freedesktop.login1.hibernate-ignore-inhibit", + "hibernate", + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); - r = verify_polkit(connection, message, action, interactive, &error); + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "HybridSleep")) { + r = bus_manager_do_shutdown_or_sleep( + m, connection, message, + SPECIAL_HYBRID_SLEEP_TARGET, + INHIBIT_SLEEP, + "org.freedesktop.login1.hibernate", + "org.freedesktop.login1.hibernate-multiple-sessions", + "org.freedesktop.login1.hibernate-ignore-inhibit", + "hybrid-sleep", + &error, &reply); if (r < 0) return bus_send_error_reply(connection, message, &error, r); - forward = dbus_message_new_method_call( - "org.freedesktop.systemd1", - "/org/freedesktop/systemd1", - "org.freedesktop.systemd1.Manager", - "StartUnit"); - if (!forward) - return bus_send_error_reply(connection, message, NULL, -ENOMEM); - - if (!dbus_message_append_args(forward, - DBUS_TYPE_STRING, &name, - DBUS_TYPE_STRING, &mode, - DBUS_TYPE_INVALID)) { - dbus_message_unref(forward); - return bus_send_error_reply(connection, message, NULL, -ENOMEM); - } + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanPowerOff")) { - freply = dbus_connection_send_with_reply_and_block(connection, forward, -1, &error); - dbus_message_unref(forward); + r = bus_manager_can_shutdown_or_sleep( + m, connection, message, + INHIBIT_SHUTDOWN, + "org.freedesktop.login1.power-off", + "org.freedesktop.login1.power-off-multiple-sessions", + "org.freedesktop.login1.power-off-ignore-inhibit", + NULL, + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanReboot")) { + r = bus_manager_can_shutdown_or_sleep( + m, connection, message, + INHIBIT_SHUTDOWN, + "org.freedesktop.login1.reboot", + "org.freedesktop.login1.reboot-multiple-sessions", + "org.freedesktop.login1.reboot-ignore-inhibit", + NULL, + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); - if (!freply) - return bus_send_error_reply(connection, message, &error, -EIO); + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanSuspend")) { + r = bus_manager_can_shutdown_or_sleep( + m, connection, message, + INHIBIT_SLEEP, + "org.freedesktop.login1.suspend", + "org.freedesktop.login1.suspend-multiple-sessions", + "org.freedesktop.login1.suspend-ignore-inhibit", + "suspend", + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); - dbus_message_unref(freply); + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanHibernate")) { + r = bus_manager_can_shutdown_or_sleep( + m, connection, message, + INHIBIT_SLEEP, + "org.freedesktop.login1.hibernate", + "org.freedesktop.login1.hibernate-multiple-sessions", + "org.freedesktop.login1.hibernate-ignore-inhibit", + "hibernate", + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); - reply = dbus_message_new_method_return(message); - if (!reply) - goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanHybridSleep")) { + r = bus_manager_can_shutdown_or_sleep( + m, connection, message, + INHIBIT_SLEEP, + "org.freedesktop.login1.hibernate", + "org.freedesktop.login1.hibernate-multiple-sessions", + "org.freedesktop.login1.hibernate-ignore-inhibit", + "hybrid-sleep", + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) { char *introspection = NULL; @@ -1396,7 +2257,7 @@ static DBusHandlerResult manager_message_handler( } HASHMAP_FOREACH(user, m->users, i) - fprintf(f, "", (unsigned long long) user->uid); + fprintf(f, "", (unsigned long long) user->uid); HASHMAP_FOREACH(session, m->sessions, i) { p = bus_path_escape(session->id); @@ -1426,22 +2287,22 @@ static DBusHandlerResult manager_message_handler( } free(introspection); - } else - return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties); + } else { + const BusBoundProperties bps[] = { + { "org.freedesktop.login1.Manager", bus_login_manager_properties, m }, + { NULL, } + }; + return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps); + } if (reply) { - if (!dbus_connection_send(connection, reply, NULL)) + if (!bus_maybe_send_reply(connection, message, reply)) goto oom; - - dbus_message_unref(reply); } return DBUS_HANDLER_RESULT_HANDLED; oom: - if (reply) - dbus_message_unref(reply); - dbus_error_free(&error); return DBUS_HANDLER_RESULT_NEED_MEMORY; @@ -1465,40 +2326,571 @@ DBusHandlerResult bus_message_filter( dbus_error_init(&error); - if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) { - const char *cgroup; + log_debug("Got message: %s %s %s", strna(dbus_message_get_sender(message)), strna(dbus_message_get_interface(message)), strna(dbus_message_get_member(message))); + + if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) { + const char *path, *result, *unit; + uint32_t id; if (!dbus_message_get_args(message, &error, - DBUS_TYPE_STRING, &cgroup, - DBUS_TYPE_INVALID)) - log_error("Failed to parse Released message: %s", bus_error_message(&error)); - else - manager_cgroup_notify_empty(m, cgroup); + DBUS_TYPE_UINT32, &id, + DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_STRING, &unit, + DBUS_TYPE_STRING, &result, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse JobRemoved message: %s", bus_error_message(&error)); + goto finish; + } + + if (m->action_job && streq(m->action_job, path)) { + log_info("Operation finished."); + + /* Tell people that they now may take a lock again */ + send_prepare_for(m, m->action_what, false); + + free(m->action_job); + m->action_job = NULL; + m->action_unit = NULL; + m->action_what = 0; + + } else { + Session *s; + User *u; + + s = hashmap_get(m->session_units, unit); + if (s) { + if (streq_ptr(path, s->scope_job)) { + free(s->scope_job); + s->scope_job = NULL; + + if (s->started) { + if (streq(result, "done")) + session_send_create_reply(s, NULL); + else { + dbus_set_error(&error, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result); + session_send_create_reply(s, &error); + } + } else + session_save(s); + } + + session_add_to_gc_queue(s); + } + + u = hashmap_get(m->user_units, unit); + if (u) { + if (streq_ptr(path, u->service_job)) { + free(u->service_job); + u->service_job = NULL; + } + + if (streq_ptr(path, u->slice_job)) { + free(u->slice_job); + u->slice_job = NULL; + } + + user_save(u); + user_add_to_gc_queue(u); + } + } + + } else if (dbus_message_is_signal(message, "org.freedesktop.DBus.Properties", "PropertiesChanged")) { + + _cleanup_free_ char *unit = NULL; + const char *path; + + path = dbus_message_get_path(message); + if (!path) + goto finish; + + unit_name_from_dbus_path(path, &unit); + if (unit) { + Session *s; + User *u; + + s = hashmap_get(m->session_units, unit); + if (s) + session_add_to_gc_queue(s); + + u = hashmap_get(m->user_units, unit); + if (u) + user_add_to_gc_queue(u); + } + + } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitRemoved")) { + + const char *path, *unit; + Session *session; + User *user; + + if (!dbus_message_get_args(message, &error, + DBUS_TYPE_STRING, &unit, + DBUS_TYPE_OBJECT_PATH, &path, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse UnitRemoved message: %s", bus_error_message(&error)); + goto finish; + } + + session = hashmap_get(m->session_units, unit); + if (session) + session_add_to_gc_queue(session); + + user = hashmap_get(m->user_units, unit); + if (user) + user_add_to_gc_queue(user); + + } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "Reloading")) { + dbus_bool_t b; + + if (!dbus_message_get_args(message, &error, + DBUS_TYPE_BOOLEAN, &b, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse Reloading message: %s", bus_error_message(&error)); + goto finish; + } + + /* systemd finished reloading, let's recheck all our sessions */ + if (!b) { + Session *session; + Iterator i; + + log_debug("System manager has been reloaded, rechecking sessions..."); + + HASHMAP_FOREACH(session, m->sessions, i) + session_add_to_gc_queue(session); + } + + } else if (dbus_message_is_signal(message, DBUS_INTERFACE_DBUS, "NameOwnerChanged")) { + const char *name, *old, *new; + char *key; + + if (!dbus_message_get_args(message, &error, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_STRING, &old, + DBUS_TYPE_STRING, &new, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse NameOwnerChanged message: %s", bus_error_message(&error)); + goto finish; + } + + /* drop all controllers owned by this name */ + if (*old && !*new && (key = hashmap_remove(m->busnames, old))) { + Session *session; + Iterator i; + + free(key); + + HASHMAP_FOREACH(session, m->sessions, i) + if (session_is_controller(session, old)) + session_drop_controller(session); + } } +finish: dbus_error_free(&error); return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; } int manager_send_changed(Manager *manager, const char *properties) { - DBusMessage *m; - int r = -ENOMEM; + _cleanup_dbus_message_unref_ DBusMessage *m = NULL; assert(manager); - m = bus_properties_changed_new("/org/freedesktop/login1", "org.freedesktop.login1.Manager", properties); + m = bus_properties_changed_new("/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + properties); if (!m) - goto finish; + return -ENOMEM; if (!dbus_connection_send(manager->bus, m, NULL)) - goto finish; + return -ENOMEM; - r = 0; + return 0; +} -finish: - if (m) - dbus_message_unref(m); +int manager_dispatch_delayed(Manager *manager) { + DBusError error; + int r; - return r; + assert(manager); + + if (manager->action_what == 0 || manager->action_job) + return 0; + + /* Continue delay? */ + if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0)) { + + if (manager->action_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC)) + return 0; + + log_info("Delay lock is active but inhibitor timeout is reached."); + } + + /* Actually do the operation */ + dbus_error_init(&error); + r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error); + if (r < 0) { + log_warning("Failed to send delayed message: %s", bus_error(&error, r)); + dbus_error_free(&error); + + manager->action_unit = NULL; + manager->action_what = 0; + return r; + } + + return 1; +} + +int manager_start_scope( + Manager *manager, + const char *scope, + pid_t pid, + const char *slice, + const char *description, + const char *after, + const char *kill_mode, + DBusError *error, + char **job) { + + const char *timeout_stop_property = "TimeoutStopUSec", *send_sighup_property = "SendSIGHUP", *pids_property = "PIDs"; + _cleanup_dbus_message_unref_ DBusMessage *m = NULL, *reply = NULL; + DBusMessageIter iter, sub, sub2, sub3, sub4; + uint64_t timeout = 500 * USEC_PER_MSEC; + dbus_bool_t send_sighup = true; + const char *fail = "fail"; + uint32_t u; + + assert(manager); + assert(scope); + assert(pid > 1); + + if (!slice) + slice = ""; + + m = dbus_message_new_method_call( + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "StartTransientUnit"); + if (!m) + return log_oom(); + + dbus_message_iter_init_append(m, &iter); + + if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &scope) || + !dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &fail) || + !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sv)", &sub)) + return log_oom(); + + if (!isempty(slice)) { + const char *slice_property = "Slice"; + + if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &slice_property) || + !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "s", &sub3) || + !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &slice) || + !dbus_message_iter_close_container(&sub2, &sub3) || + !dbus_message_iter_close_container(&sub, &sub2)) + return log_oom(); + } + + if (!isempty(description)) { + const char *description_property = "Description"; + + if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description_property) || + !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "s", &sub3) || + !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &description) || + !dbus_message_iter_close_container(&sub2, &sub3) || + !dbus_message_iter_close_container(&sub, &sub2)) + return log_oom(); + } + + if (!isempty(after)) { + const char *after_property = "After"; + + if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &after_property) || + !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "as", &sub3) || + !dbus_message_iter_open_container(&sub3, DBUS_TYPE_ARRAY, "s", &sub4) || + !dbus_message_iter_append_basic(&sub4, DBUS_TYPE_STRING, &after) || + !dbus_message_iter_close_container(&sub3, &sub4) || + !dbus_message_iter_close_container(&sub2, &sub3) || + !dbus_message_iter_close_container(&sub, &sub2)) + return log_oom(); + } + + if (!isempty(kill_mode)) { + const char *kill_mode_property = "KillMode"; + + if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &kill_mode_property) || + !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "s", &sub3) || + !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &kill_mode) || + !dbus_message_iter_close_container(&sub2, &sub3) || + !dbus_message_iter_close_container(&sub, &sub2)) + return log_oom(); + } + + /* cgroup empty notification is not available in containers + * currently. To make this less problematic, let's shorten the + * stop timeout for sessions, so that we don't wait + * forever. */ + + if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &timeout_stop_property) || + !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "t", &sub3) || + !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_UINT64, &timeout) || + !dbus_message_iter_close_container(&sub2, &sub3) || + !dbus_message_iter_close_container(&sub, &sub2)) + return log_oom(); + + /* Make sure that the session shells are terminated with + * SIGHUP since bash and friends tend to ignore SIGTERM */ + if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &send_sighup_property) || + !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "b", &sub3) || + !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_BOOLEAN, &send_sighup) || + !dbus_message_iter_close_container(&sub2, &sub3) || + !dbus_message_iter_close_container(&sub, &sub2)) + return log_oom(); + + u = pid; + if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) || + !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &pids_property) || + !dbus_message_iter_open_container(&sub2, DBUS_TYPE_VARIANT, "au", &sub3) || + !dbus_message_iter_open_container(&sub3, DBUS_TYPE_ARRAY, "u", &sub4) || + !dbus_message_iter_append_basic(&sub4, DBUS_TYPE_UINT32, &u) || + !dbus_message_iter_close_container(&sub3, &sub4) || + !dbus_message_iter_close_container(&sub2, &sub3) || + !dbus_message_iter_close_container(&sub, &sub2)) + return log_oom(); + + if (!dbus_message_iter_close_container(&iter, &sub)) + return log_oom(); + + reply = dbus_connection_send_with_reply_and_block(manager->bus, m, -1, error); + if (!reply) + return -EIO; + + if (job) { + const char *j; + char *copy; + + if (!dbus_message_get_args(reply, error, DBUS_TYPE_OBJECT_PATH, &j, DBUS_TYPE_INVALID)) + return -EIO; + + copy = strdup(j); + if (!copy) + return -ENOMEM; + + *job = copy; + } + + return 0; +} + +int manager_start_unit(Manager *manager, const char *unit, DBusError *error, char **job) { + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + const char *fail = "fail"; + int r; + + assert(manager); + assert(unit); + + r = bus_method_call_with_reply( + manager->bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "StartUnit", + &reply, + error, + DBUS_TYPE_STRING, &unit, + DBUS_TYPE_STRING, &fail, + DBUS_TYPE_INVALID); + if (r < 0) { + log_error("Failed to start unit %s: %s", unit, bus_error(error, r)); + return r; + } + + if (job) { + const char *j; + char *copy; + + if (!dbus_message_get_args(reply, error, + DBUS_TYPE_OBJECT_PATH, &j, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse reply."); + return -EIO; + } + + copy = strdup(j); + if (!copy) + return -ENOMEM; + + *job = copy; + } + + return 0; +} + +int manager_stop_unit(Manager *manager, const char *unit, DBusError *error, char **job) { + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + const char *fail = "fail"; + int r; + + assert(manager); + assert(unit); + + r = bus_method_call_with_reply( + manager->bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "StopUnit", + &reply, + error, + DBUS_TYPE_STRING, &unit, + DBUS_TYPE_STRING, &fail, + DBUS_TYPE_INVALID); + if (r < 0) { + if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) || + dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) { + + if (job) + *job = NULL; + + dbus_error_free(error); + return 0; + } + + log_error("Failed to stop unit %s: %s", unit, bus_error(error, r)); + return r; + } + + if (job) { + const char *j; + char *copy; + + if (!dbus_message_get_args(reply, error, + DBUS_TYPE_OBJECT_PATH, &j, + DBUS_TYPE_INVALID)) { + log_error("Failed to parse reply."); + return -EIO; + } + + copy = strdup(j); + if (!copy) + return -ENOMEM; + + *job = copy; + } + + return 1; +} + +int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, DBusError *error) { + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + const char *w; + int r; + + assert(manager); + assert(unit); + + w = who == KILL_LEADER ? "process" : "cgroup"; + assert_cc(sizeof(signo) == sizeof(int32_t)); + + r = bus_method_call_with_reply( + manager->bus, + "org.freedesktop.systemd1", + "/org/freedesktop/systemd1", + "org.freedesktop.systemd1.Manager", + "KillUnit", + &reply, + error, + DBUS_TYPE_STRING, &unit, + DBUS_TYPE_STRING, &w, + DBUS_TYPE_INT32, &signo, + DBUS_TYPE_INVALID); + if (r < 0) { + log_error("Failed to stop unit %s: %s", unit, bus_error(error, r)); + return r; + } + + return 0; +} + +int manager_unit_is_active(Manager *manager, const char *unit) { + + const char *interface = "org.freedesktop.systemd1.Unit"; + const char *property = "ActiveState"; + _cleanup_dbus_message_unref_ DBusMessage *reply = NULL; + _cleanup_free_ char *path = NULL; + DBusMessageIter iter, sub; + const char *state; + DBusError error; + int r; + + assert(manager); + assert(unit); + + dbus_error_init(&error); + + path = unit_dbus_path_from_name(unit); + if (!path) + return -ENOMEM; + + r = bus_method_call_with_reply( + manager->bus, + "org.freedesktop.systemd1", + path, + "org.freedesktop.DBus.Properties", + "Get", + &reply, + &error, + DBUS_TYPE_STRING, &interface, + DBUS_TYPE_STRING, &property, + DBUS_TYPE_INVALID); + if (r < 0) { + if (dbus_error_has_name(&error, DBUS_ERROR_NO_REPLY) || + dbus_error_has_name(&error, DBUS_ERROR_DISCONNECTED)) { + /* systemd might have droppped off + * momentarily, let's not make this an + * error */ + + dbus_error_free(&error); + return true; + } + + if (dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) || + dbus_error_has_name(&error, BUS_ERROR_LOAD_FAILED)) { + /* If the unit is already unloaded then it's + * not active */ + + dbus_error_free(&error); + return false; + } + + log_error("Failed to query ActiveState: %s", bus_error(&error, r)); + dbus_error_free(&error); + return r; + } + + if (!dbus_message_iter_init(reply, &iter) || + dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) { + log_error("Failed to parse reply."); + return -EINVAL; + } + + dbus_message_iter_recurse(&iter, &sub); + if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) { + log_error("Failed to parse reply."); + return -EINVAL; + } + + dbus_message_iter_get_basic(&sub, &state); + + return !streq(state, "inactive") && !streq(state, "failed"); }