X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flogin%2Flogind-dbus.c;h=86ca654518e3e853ec4731db9bcb65c8ff839a45;hp=a361b93dc76a0b011dc748a686ccf47ed89179db;hb=fa2b196da12642d3560f5766eef09ffca7c31f7b;hpb=eecd1362f7f4de432483b5d77c56726c3621a83a diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c index a361b93dc..86ca65451 100644 --- a/src/login/logind-dbus.c +++ b/src/login/logind-dbus.c @@ -28,6 +28,7 @@ #include "dbus-common.h" #include "strv.h" #include "mkdir.h" +#include "path-util.h" #include "polkit.h" #include "special.h" @@ -97,6 +98,7 @@ " \n" \ " \n" \ " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ @@ -134,12 +136,24 @@ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ @@ -177,6 +191,9 @@ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" \ " \n" \ " \n" \ @@ -190,6 +207,11 @@ " \n" \ " \n" \ " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ + " \n" \ " \n" #define INTROSPECTION_BEGIN \ @@ -254,6 +276,22 @@ static int bus_manager_append_inhibited(DBusMessageIter *i, const char *property 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->delayed_what & INHIBIT_SHUTDOWN); + else + b = !!(m->delayed_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, DBusMessage **_reply) { Session *session = NULL; User *user = NULL; @@ -855,7 +893,7 @@ static int attach_device(Manager *m, const char *seat, const char *sysfs) { goto finish; } - mkdir_p("/etc/udev/rules.d", 0755); + mkdir_p_label("/etc/udev/rules.d", 0755); r = write_one_line_file_atomic(file, rule); if (r < 0) goto finish; @@ -911,37 +949,30 @@ static int have_multiple_sessions( DBusMessage *message, DBusError *error) { - Session *s; + Session *session; + Iterator i; + unsigned long ul; assert(m); - if (hashmap_size(m->sessions) > 1) - return true; - - /* 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 -EIO; + ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error); + if (ul == (unsigned long) -1) + return -EIO; - return s->user->uid != ul; - } + /* Check for other users' sessions. Greeter sessions do not count. */ + HASHMAP_FOREACH(session, m->sessions, i) + if (session->class == SESSION_USER && session->user->uid != ul) + return true; return false; } -static int send_start_unit(DBusConnection *connection, const char *name, DBusError *error) { +static int send_start_unit(DBusConnection *connection, const char *unit_name, DBusError *error) { DBusMessage *message, *reply; const char *mode = "replace"; assert(connection); - assert(name); + assert(unit_name); message = dbus_message_new_method_call( "org.freedesktop.systemd1", @@ -952,7 +983,7 @@ static int send_start_unit(DBusConnection *connection, const char *name, DBusErr return -ENOMEM; if (!dbus_message_append_args(message, - DBUS_TYPE_STRING, &name, + DBUS_TYPE_STRING, &unit_name, DBUS_TYPE_STRING, &mode, DBUS_TYPE_INVALID)) { dbus_message_unref(message); @@ -969,14 +1000,22 @@ static int send_start_unit(DBusConnection *connection, const char *name, DBusErr return 0; } -static int send_prepare_for_shutdown(Manager *m, bool _active) { +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; DBusMessage *message; int r = 0; 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", "PrepareForShutdown"); + message = dbus_message_new_signal("/org/freedesktop/login1", "org.freedesktop.login1.Manager", signal_name[w]); if (!message) return -ENOMEM; @@ -988,24 +1027,247 @@ static int send_prepare_for_shutdown(Manager *m, bool _active) { return r; } -static int delay_shutdown(Manager *m, const char *name) { +static int delay_shutdown_or_sleep(Manager *m, InhibitWhat w, const char *unit_name) { assert(m); + assert(w >= 0); + assert(w < _INHIBIT_WHAT_MAX); - if (!m->delayed_shutdown) { - /* Tell everybody to prepare for shutdown */ - send_prepare_for_shutdown(m, true); + /* Tell everybody to prepare for shutdown/sleep */ + send_prepare_for(m, w, true); - /* Update timestamp for timeout */ - m->delayed_shutdown_timestamp = now(CLOCK_MONOTONIC); - } + /* Update timestamp for timeout */ + if (!m->delayed_unit) + m->delayed_timestamp = now(CLOCK_MONOTONIC); /* Remember what we want to do, possibly overriding what kind - * of shutdown we previously queued. */ - m->delayed_shutdown = name; + * of unit we previously queued. */ + m->delayed_unit = unit_name; + m->delayed_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_type, + DBusError *error, + DBusMessage **_reply) { + + bool multiple_sessions, challenge, blocked, b; + const char *result; + DBusMessage *reply = NULL; + int r; + + 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_type) { + r = can_sleep(sleep_type); + if (r < 0) + return r; + + if (r == 0) { + result = "na"; + goto finish; + } + } + + r = have_multiple_sessions(connection, m, message, error); + if (r < 0) + return r; + + multiple_sessions = r > 0; + blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL); + + 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) { + dbus_message_unref(reply); + return -ENOMEM; + } + + *_reply = reply; + 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); + + delayed = + m->inhibit_delay_max > 0 && + manager_is_inhibited(m, w, INHIBIT_DELAY, 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 = send_start_unit(m->bus, 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_type, + DBusError *error, + DBusMessage **_reply) { + + dbus_bool_t interactive; + bool multiple_sessions, blocked; + DBusMessage *reply = NULL; + int r; + + 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); + if (!dbus_message_get_args( + message, + error, + DBUS_TYPE_BOOLEAN, &interactive, + DBUS_TYPE_INVALID)) + return -EINVAL; + + if (sleep_type) { + r = can_sleep(sleep_type); + if (r < 0) + return r; + + if (r == 0) + return -ENOTSUP; + } + + r = have_multiple_sessions(connection, m, message, error); + if (r < 0) + return r; + + multiple_sessions = r > 0; + blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL); + + 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_button, handle_button, HandleButton); + static const BusProperty bus_login_manager_properties[] = { { "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_path), true }, { "Controllers", bus_property_append_strv, "as", offsetof(Manager, controllers), true }, @@ -1020,6 +1282,11 @@ static const BusProperty bus_login_manager_properties[] = { { "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_button, "s", offsetof(Manager, handle_power_key) }, + { "HandleSleepKey", bus_manager_append_handle_button, "s", offsetof(Manager, handle_sleep_key) }, + { "HandleLidSwitch", bus_manager_append_handle_button, "s", offsetof(Manager, handle_lid_switch) }, + { "PreparingForShutdown", bus_manager_append_preparing, "b", 0 }, + { "PreparingForSleep", bus_manager_append_preparing, "b", 0 }, { NULL, } }; @@ -1479,6 +1746,18 @@ static DBusHandlerResult manager_message_handler( if (!reply) goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSessions")) { + Session *session; + Iterator i; + + HASHMAP_FOREACH(session, m->sessions, i) + if (session_send_lock(session, true) < 0) + goto oom; + + reply = dbus_message_new_method_return(message); + if (!reply) + goto oom; + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillSession")) { const char *swho; int32_t signo; @@ -1639,9 +1918,9 @@ static DBusHandlerResult manager_message_handler( if (r < 0) return bus_send_error_reply(connection, message, &error, r); - mkdir_p("/var/lib/systemd", 0755); + mkdir_p_label("/var/lib/systemd", 0755); - r = safe_mkdir("/var/lib/systemd/linger", 0755, 0, 0); + r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0); if (r < 0) return bus_send_error_reply(connection, message, &error, r); @@ -1730,158 +2009,104 @@ 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, blocked, delayed; - const char *name, *action; - - if (!dbus_message_get_args( - message, - &error, - DBUS_TYPE_BOOLEAN, &interactive, - DBUS_TYPE_INVALID)) - return bus_send_error_reply(connection, message, &error, -EINVAL); - - r = have_multiple_sessions(connection, m, message, &error); + } 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); - - multiple_sessions = r > 0; - blocked = manager_is_inhibited(m, INHIBIT_SHUTDOWN, INHIBIT_BLOCK, NULL); - - if (multiple_sessions) { - action = streq(dbus_message_get_member(message), "PowerOff") ? - "org.freedesktop.login1.power-off-multiple-sessions" : - "org.freedesktop.login1.reboot-multiple-sessions"; - - r = verify_polkit(connection, message, action, interactive, NULL, &error); - if (r < 0) - return bus_send_error_reply(connection, message, &error, r); - } - - if (blocked) { - action = streq(dbus_message_get_member(message), "PowerOff") ? - "org.freedesktop.login1.power-off-ignore-inhibit" : - "org.freedesktop.login1.reboot-ignore-inhibit"; - - r = verify_polkit(connection, message, action, interactive, NULL, &error); - if (r < 0) - return bus_send_error_reply(connection, message, &error, r); - } - - if (!multiple_sessions && !blocked) { - action = streq(dbus_message_get_member(message), "PowerOff") ? - "org.freedesktop.login1.power-off" : - "org.freedesktop.login1.reboot"; - - r = verify_polkit(connection, message, action, interactive, NULL, &error); - if (r < 0) - return bus_send_error_reply(connection, message, &error, r); - } - - name = streq(dbus_message_get_member(message), "PowerOff") ? - SPECIAL_POWEROFF_TARGET : SPECIAL_REBOOT_TARGET; - - delayed = - m->inhibit_delay_max > 0 && - manager_is_inhibited(m, INHIBIT_SHUTDOWN, INHIBIT_DELAY, NULL); - - if (delayed) { - /* Shutdown is delayed, keep in mind what we - * want to do, and start a timeout */ - r = delay_shutdown(m, name); - if (r < 0) - return bus_send_error_reply(connection, message, NULL, r); - } else { - /* Shutdown is not delayed, execute it - * immediately */ - r = send_start_unit(connection, name, &error); - 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", "CanPowerOff") || - dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanReboot")) { - - bool multiple_sessions, challenge, inhibit, b; - const char *action, *result; - - r = have_multiple_sessions(connection, m, message, &error); + } 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); - multiple_sessions = r > 0; - inhibit = manager_is_inhibited(m, INHIBIT_SHUTDOWN, INHIBIT_BLOCK, NULL); - - if (multiple_sessions) { - action = streq(dbus_message_get_member(message), "CanPowerOff") ? - "org.freedesktop.login1.power-off-multiple-sessions" : - "org.freedesktop.login1.reboot-multiple-sessions"; - - r = verify_polkit(connection, message, action, false, &challenge, &error); - if (r < 0) - return bus_send_error_reply(connection, message, &error, r); - - if (r > 0) - result = "yes"; - else if (challenge) - result = "challenge"; - else - result = "no"; - } - - if (inhibit) { - action = streq(dbus_message_get_member(message), "CanPowerOff") ? - "org.freedesktop.login1.power-off-ignore-inhibit" : - "org.freedesktop.login1.reboot-ignore-inhibit"; - - r = verify_polkit(connection, message, action, false, &challenge, &error); - if (r < 0) - return bus_send_error_reply(connection, message, &error, r); - - if (r > 0 && !result) - result = "yes"; - else if (challenge && (!result || streq(result, "yes"))) - result = "challenge"; - else - result = "no"; - } - - if (!multiple_sessions && !inhibit) { - /* If neither inhibit nor multiple sessions - * apply then just check the normal policy */ - - action = streq(dbus_message_get_member(message), "CanPowerOff") ? - "org.freedesktop.login1.power-off" : - "org.freedesktop.login1.reboot"; + } 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", + "mem", + &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", + "disk", + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); - r = verify_polkit(connection, message, action, false, &challenge, &error); - if (r < 0) - return bus_send_error_reply(connection, message, &error, r); + } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanPowerOff")) { - if (r > 0) - result = "yes"; - else if (challenge) - result = "challenge"; - else - result = "no"; - } + 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); - reply = dbus_message_new_method_return(message); - if (!reply) - goto oom; + } 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", + "mem", + &error, &reply); + if (r < 0) + return bus_send_error_reply(connection, message, &error, r); - b = dbus_message_append_args( - reply, - DBUS_TYPE_STRING, &result, - DBUS_TYPE_INVALID); - if (!b) - goto oom; + } 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", + "disk", + &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; @@ -2028,38 +2253,39 @@ finish: return r; } -int manager_dispatch_delayed_shutdown(Manager *manager) { - const char *name; +int manager_dispatch_delayed(Manager *manager) { + const char *unit_name; DBusError error; bool delayed; int r; assert(manager); - if (!manager->delayed_shutdown) + if (!manager->delayed_unit) return 0; /* Continue delay? */ delayed = - manager->delayed_shutdown_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC) && - manager_is_inhibited(manager, INHIBIT_SHUTDOWN, INHIBIT_DELAY, NULL); + manager->delayed_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC) && + manager_is_inhibited(manager, manager->delayed_what, INHIBIT_DELAY, NULL); if (delayed) return 0; /* Reset delay data */ - name = manager->delayed_shutdown; - manager->delayed_shutdown = NULL; + unit_name = manager->delayed_unit; + manager->delayed_unit = NULL; /* Actually do the shutdown */ dbus_error_init(&error); - r = send_start_unit(manager->bus, name, &error); + r = send_start_unit(manager->bus, unit_name, &error); if (r < 0) { - log_warning("Failed to send delayed shutdown message: %s", bus_error_message_or_strerror(&error, -r)); + log_warning("Failed to send delayed message: %s", bus_error_message_or_strerror(&error, -r)); + dbus_error_free(&error); return r; } /* Tell people about it */ - send_prepare_for_shutdown(manager, false); + send_prepare_for(manager, manager->delayed_what, false); return 1; }