chiark / gitweb /
logind: split up HandleSleepKey= into HandleSuspendKey= and HandleHibernateKey=
[elogind.git] / src / login / logind-dbus.c
index 5cdd089..cbf43fe 100644 (file)
@@ -31,6 +31,8 @@
 #include "path-util.h"
 #include "polkit.h"
 #include "special.h"
+#include "systemd/sd-id128.h"
+#include "systemd/sd-messages.h"
 
 #define BUS_MANAGER_INTERFACE                                           \
         " <interface name=\"org.freedesktop.login1.Manager\">\n"        \
         "  <method name=\"UnlockSession\">\n"                           \
         "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
         "  </method>\n"                                                 \
+        "  <method name=\"LockSessions\"/>\n"                           \
         "  <method name=\"KillSession\">\n"                             \
         "   <arg name=\"id\" type=\"s\" direction=\"in\"/>\n"           \
         "   <arg name=\"who\" type=\"s\" direction=\"in\"/>\n"          \
         "  <property name=\"DelayInhibited\" type=\"s\" access=\"read\"/>\n" \
         "  <property name=\"InhibitDelayMaxUSec\" type=\"t\" access=\"read\"/>\n" \
         "  <property name=\"HandlePowerKey\" type=\"s\" access=\"read\"/>\n" \
-        "  <property name=\"HandleSleepKey\" type=\"s\" access=\"read\"/>\n" \
+        "  <property name=\"HandleSuspendKey\" type=\"s\" access=\"read\"/>\n" \
+        "  <property name=\"HandleHibernateKey\" type=\"s\" access=\"read\"/>\n" \
         "  <property name=\"HandleLidSwitch\" type=\"s\" access=\"read\"/>\n" \
+        "  <property name=\"PreparingForShutdown\" type=\"b\" access=\"read\"/>\n" \
+        "  <property name=\"PreparingForSleep\" type=\"b\" access=\"read\"/>\n" \
         " </interface>\n"
 
 #define INTROSPECTION_BEGIN                                             \
@@ -273,6 +279,22 @@ 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;
@@ -701,10 +723,21 @@ static int bus_manager_inhibit(Manager *m, DBusConnection *connection, DBusMessa
                 goto fail;
         }
 
+        /* Delay is only supported for shutdown/sleep */
+        if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP))) {
+                r = -EINVAL;
+                goto fail;
+        }
+
         r = verify_polkit(connection, message,
-                          m == INHIBIT_BLOCK ?
-                          "org.freedesktop.login1.inhibit-block" :
-                          "org.freedesktop.login1.inhibit-delay", false, NULL, error);
+                          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;
 
@@ -874,7 +907,7 @@ 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;
@@ -925,67 +958,38 @@ static int flush_devices(Manager *m) {
 }
 
 static int have_multiple_sessions(
-                DBusConnection *connection,
                 Manager *m,
-                DBusMessage *message,
-                DBusError *error) {
+                uid_t uid) {
 
-        Session *s;
+        Session *session;
+        Iterator i;
 
         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;
-
-                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 != uid)
+                        return true;
 
         return false;
 }
 
 static int send_start_unit(DBusConnection *connection, const char *unit_name, DBusError *error) {
-        DBusMessage *message, *reply;
         const char *mode = "replace";
 
-        assert(connection);
         assert(unit_name);
 
-        message = dbus_message_new_method_call(
+        return bus_method_call_with_reply (
+                        connection,
                         "org.freedesktop.systemd1",
                         "/org/freedesktop/systemd1",
                         "org.freedesktop.systemd1.Manager",
-                        "StartUnit");
-        if (!message)
-                return -ENOMEM;
-
-        if (!dbus_message_append_args(message,
-                                      DBUS_TYPE_STRING, &unit_name,
-                                      DBUS_TYPE_STRING, &mode,
-                                      DBUS_TYPE_INVALID)) {
-                dbus_message_unref(message);
-                return -ENOMEM;
-        }
-
-        reply = dbus_connection_send_with_reply_and_block(connection, message, -1, error);
-        dbus_message_unref(message);
-
-        if (!reply)
-                return -EIO;
-
-        dbus_message_unref(reply);
-        return 0;
+                        "StartUnit",
+                        NULL,
+                        NULL,
+                        DBUS_TYPE_STRING, &unit_name,
+                        DBUS_TYPE_STRING, &mode,
+                        DBUS_TYPE_INVALID);
 }
 
 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
@@ -1051,6 +1055,7 @@ static int bus_manager_can_shutdown_or_sleep(
         const char *result;
         DBusMessage *reply = NULL;
         int r;
+        unsigned long ul;
 
         assert(m);
         assert(connection);
@@ -1068,16 +1073,22 @@ static int bus_manager_can_shutdown_or_sleep(
                 if (r < 0)
                         return r;
 
-                result = "na";
-                goto finish;
+                if (r == 0) {
+                        result = "na";
+                        goto finish;
+                }
         }
 
-        r = have_multiple_sessions(connection, m, message, error);
+        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);
+        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);
@@ -1086,11 +1097,11 @@ static int bus_manager_can_shutdown_or_sleep(
 
                 if (r > 0)
                         result = "yes";
-                        else if (challenge)
-                                result = "challenge";
-                        else
-                                result = "no";
-                }
+                else if (challenge)
+                        result = "challenge";
+                else
+                        result = "no";
+        }
 
         if (blocked) {
                 r = verify_polkit(connection, message, action_ignore_inhibit, false, &challenge, error);
@@ -1139,6 +1150,42 @@ finish:
         return 0;
 }
 
+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_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(SD_MESSAGE_SHUTDOWN),
+                          p,
+                          q, NULL);
+}
+
 int bus_manager_shutdown_or_sleep_now_or_later(
                 Manager *m,
                 const char *unit_name,
@@ -1155,16 +1202,19 @@ int bus_manager_shutdown_or_sleep_now_or_later(
 
         delayed =
                 m->inhibit_delay_max > 0 &&
-                manager_is_inhibited(m, w, INHIBIT_DELAY, NULL);
+                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
+        else {
+                bus_manager_log_shutdown(m, w, unit_name);
+
                 /* Shutdown is not delayed, execute it
                  * immediately */
                 r = send_start_unit(m->bus, unit_name, error);
+        }
 
         return r;
 }
@@ -1186,6 +1236,7 @@ static int bus_manager_do_shutdown_or_sleep(
         bool multiple_sessions, blocked;
         DBusMessage *reply = NULL;
         int r;
+        unsigned long ul;
 
         assert(m);
         assert(connection);
@@ -1215,12 +1266,16 @@ static int bus_manager_do_shutdown_or_sleep(
                         return -ENOTSUP;
         }
 
-        r = have_multiple_sessions(connection, m, message, error);
+        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);
+        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);
@@ -1269,8 +1324,11 @@ static const BusProperty bus_login_manager_properties[] = {
         { "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)    },
+        { "HandleSuspendKey",       bus_manager_append_handle_button,   "s",  offsetof(Manager, handle_suspend_key)  },
+        { "HandleHibernateKey",     bus_manager_append_handle_button,   "s",  offsetof(Manager, handle_hibernate_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, }
 };
 
@@ -1730,6 +1788,18 @@ 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;
@@ -1890,9 +1960,9 @@ 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);
 
@@ -2239,10 +2309,12 @@ int manager_dispatch_delayed(Manager *manager) {
         /* Continue delay? */
         delayed =
                 manager->delayed_timestamp + manager->inhibit_delay_max > now(CLOCK_MONOTONIC) &&
-                manager_is_inhibited(manager, manager->delayed_what, INHIBIT_DELAY, NULL);
+                manager_is_inhibited(manager, manager->delayed_what, INHIBIT_DELAY, NULL, false, false, 0);
         if (delayed)
                 return 0;
 
+        bus_manager_log_shutdown(manager, manager->delayed_what, manager->delayed_unit);
+
         /* Reset delay data */
         unit_name = manager->delayed_unit;
         manager->delayed_unit = NULL;