chiark / gitweb /
tree-wide: drop !! casts to booleans
[elogind.git] / src / login / logind-dbus.c
index 9844787ed5c31db37e6fa101d08a14306fb83510..26a4ed889817b69a971d5202bccdc88ece7069a0 100644 (file)
@@ -3,19 +3,6 @@
   This file is part of systemd.
 
   Copyright 2011 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
 #include <errno.h>
@@ -29,6 +16,7 @@
 #include "audit-util.h"
 #include "bus-common-errors.h"
 #include "bus-error.h"
+//#include "bus-unit-util.h"
 #include "bus-util.h"
 #include "dirent-util.h"
 //#include "efivars.h"
@@ -257,9 +245,9 @@ static int property_get_preparing(
         assert(m);
 
         if (streq(property, "PreparingForShutdown"))
-                b = !!(m->action_what & INHIBIT_SHUTDOWN);
+                b = m->action_what & INHIBIT_SHUTDOWN;
         else
-                b = !!(m->action_what & INHIBIT_SLEEP);
+                b = m->action_what & INHIBIT_SLEEP;
 
         return sd_bus_message_append(reply, "b", b);
 }
@@ -292,60 +280,9 @@ static int property_get_scheduled_shutdown(
 }
 
 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
-
-static int property_get_docked(
-                sd_bus *bus,
-                const char *path,
-                const char *interface,
-                const char *property,
-                sd_bus_message *reply,
-                void *userdata,
-                sd_bus_error *error) {
-
-        Manager *m = userdata;
-
-        assert(bus);
-        assert(reply);
-        assert(m);
-
-        return sd_bus_message_append(reply, "b", manager_is_docked_or_external_displays(m));
-}
-
-static int property_get_current_sessions(
-                sd_bus *bus,
-                const char *path,
-                const char *interface,
-                const char *property,
-                sd_bus_message *reply,
-                void *userdata,
-                sd_bus_error *error) {
-
-        Manager *m = userdata;
-
-        assert(bus);
-        assert(reply);
-        assert(m);
-
-        return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->sessions));
-}
-
-static int property_get_current_inhibitors(
-                sd_bus *bus,
-                const char *path,
-                const char *interface,
-                const char *property,
-                sd_bus_message *reply,
-                void *userdata,
-                sd_bus_error *error) {
-
-        Manager *m = userdata;
-
-        assert(bus);
-        assert(reply);
-        assert(m);
-
-        return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->inhibitors));
-}
+static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
+static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
+static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 
 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
         _cleanup_free_ char *p = NULL;
@@ -661,7 +598,7 @@ static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bu
 
 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
-        _cleanup_free_ char *unit = NULL, *id = NULL;
+        _cleanup_free_ char *id = NULL;
         Session *session = NULL;
         uint32_t audit_id = 0;
         Manager *m = userdata;
@@ -759,10 +696,6 @@ static int method_create_session(sd_bus_message *message, void *userdata, sd_bus
                 }
         }
 
-        r = sd_bus_message_enter_container(message, 'a', "(sv)");
-        if (r < 0)
-                return r;
-
         if (t == _SESSION_TYPE_INVALID) {
                 if (!isempty(display))
                         t = SESSION_X11;
@@ -918,7 +851,15 @@ static int method_create_session(sd_bus_message *message, void *userdata, sd_bus
                         goto fail;
         }
 
-        r = session_start(session);
+        r = sd_bus_message_enter_container(message, 'a', "(sv)");
+        if (r < 0)
+                return r;
+
+        r = session_start(session, message);
+        if (r < 0)
+                goto fail;
+
+        r = sd_bus_message_exit_container(message);
         if (r < 0)
                 goto fail;
 
@@ -1233,7 +1174,7 @@ static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bu
 
         mkdir_p_label("/var/lib/elogind", 0755);
 
-        r = mkdir_safe_label("/var/lib/elogind/linger", 0755, 0, 0, false);
+        r = mkdir_safe_label("/var/lib/elogind/linger", 0755, 0, 0, MKDIR_WARN_MODE);
         if (r < 0)
                 return r;
 
@@ -1268,7 +1209,7 @@ static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bu
 }
 
 static int trigger_device(Manager *m, struct udev_device *d) {
-        _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
+        _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL;
         struct udev_list_entry *first, *item;
         int r;
 
@@ -1306,7 +1247,7 @@ static int trigger_device(Manager *m, struct udev_device *d) {
 }
 
 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
-        _cleanup_udev_device_unref_ struct udev_device *d = NULL;
+        _cleanup_(udev_device_unrefp) struct udev_device *d = NULL;
         _cleanup_free_ char *rule = NULL, *file = NULL;
         const char *id_for_seat;
         int r;
@@ -1495,8 +1436,7 @@ static int bus_manager_log_shutdown(
         return log_struct(LOG_NOTICE,
                           "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_STR,
                           p,
-                          q,
-                          NULL);
+                          q);
 }
 #endif // 0
 
@@ -1754,6 +1694,7 @@ int bus_manager_shutdown_or_sleep_now_or_later(
 #if 0 /// elogind has HandleAction instead of const char* unit_name
                 const char *unit_name,
 
+        _cleanup_free_ char *load_state = NULL;
 #else
                 HandleAction unit_name,
 #endif // 0
@@ -1768,6 +1709,15 @@ int bus_manager_shutdown_or_sleep_now_or_later(
         assert(w > 0);
         assert(w <= _INHIBIT_WHAT_MAX);
         assert(!m->action_job);
+
+        r = unit_load_state(m->bus, unit_name, &load_state);
+        if (r < 0)
+                return r;
+
+        if (!streq(load_state, "loaded")) {
+                log_notice("Unit %s is %s, refusing operation.", unit_name, load_state);
+                return -EACCES;
+        }
 #else
         assert(w > 0);
         assert(w <= _INHIBIT_WHAT_MAX);
@@ -1896,14 +1846,17 @@ static int method_do_shutdown_or_sleep(
         if (sleep_verb) {
 #if 0 /// Within elogind the manager m must be provided, too
                 r = can_sleep(sleep_verb);
+                if (r == -ENOSPC)
+                        return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
+                                                "Not enough swap space for hibernation");
+                if (r == 0)
+                        return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
+                                                 "Sleep verb \"%s\" not supported", sleep_verb);
 #else
                 r = can_sleep(m, sleep_verb);
 #endif // 0
                 if (r < 0)
                         return r;
-
-                if (r == 0)
-                        return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported");
         }
 
 #if 0 /// Within elogind it does not make sense to verify shutdown creds when suspending
@@ -2039,12 +1992,12 @@ static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_e
                         error);
 }
 
-static int method_suspend_to_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
         Manager *m = userdata;
 
         return method_do_shutdown_or_sleep(
                         m, message,
-                        SPECIAL_SUSPEND_TO_HIBERNATE_TARGET,
+                        SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET,
 #else
                         HANDLE_HYBRID_SLEEP,
 #endif // 0
@@ -2078,7 +2031,7 @@ static int update_schedule_file(Manager *m) {
 
         assert(m);
 
-        r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0, false);
+        r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0, MKDIR_WARN_MODE);
         if (r < 0)
                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
 
@@ -2331,7 +2284,7 @@ static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userd
         cancelled = m->scheduled_shutdown_type != NULL;
         reset_scheduled_shutdown(m);
 
-        if (cancelled) {
+        if (cancelled && m->enable_wall_messages) {
                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
                 const char *tty = NULL;
                 uid_t uid = 0;
@@ -2373,6 +2326,7 @@ static int method_can_shutdown_or_sleep(
                 sd_bus_error *error) {
 
         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+        HandleAction handle;
         bool multiple_sessions, challenge, blocked;
         const char *result = NULL;
         uid_t uid;
@@ -2389,13 +2343,13 @@ static int method_can_shutdown_or_sleep(
         if (sleep_verb) {
 #if 0 /// elogind needs to have the manager being passed
                 r = can_sleep(sleep_verb);
+                if (IN_SET(r,  0, -ENOSPC))
+                        return sd_bus_reply_method_return(message, "s", "na");
 #else
                 r = can_sleep(m, sleep_verb);
 #endif // 0
                 if (r < 0)
                         return r;
-                if (r == 0)
-                        return sd_bus_reply_method_return(message, "s", "na");
         }
 
         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
@@ -2413,6 +2367,25 @@ static int method_can_shutdown_or_sleep(
         multiple_sessions = r > 0;
         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
 
+        handle = handle_action_from_string(sleep_verb);
+        if (handle >= 0) {
+                const char *target;
+
+                target = manager_target_for_action(handle);
+                if (target) {
+                        _cleanup_free_ char *load_state = NULL;
+
+                        r = unit_load_state(m->bus, target, &load_state);
+                        if (r < 0)
+                                return r;
+
+                        if (!streq(load_state, "loaded")) {
+                                result = "no";
+                                goto finish;
+                        }
+                }
+        }
+
         if (multiple_sessions) {
                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
                 if (r < 0)
@@ -2455,6 +2428,7 @@ static int method_can_shutdown_or_sleep(
                         result = "no";
         }
 
+ finish:
         return sd_bus_reply_method_return(message, "s", result);
 }
 
@@ -2536,7 +2510,7 @@ static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_b
                         error);
 }
 
-static int method_can_suspend_to_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
         Manager *m = userdata;
 
         return method_can_shutdown_or_sleep(
@@ -2545,7 +2519,7 @@ static int method_can_suspend_to_hibernate(sd_bus_message *message, void *userda
                         "org.freedesktop.login1.hibernate",
                         "org.freedesktop.login1.hibernate-multiple-sessions",
                         "org.freedesktop.login1.hibernate-ignore-inhibit",
-                        "suspend-to-hibernate",
+                        "suspend-then-hibernate",
                         error);
 }
 
@@ -2664,7 +2638,7 @@ static int method_set_wall_message(
         int r;
         Manager *m = userdata;
         char *wall_message;
-        int enable_wall_messages;
+        unsigned enable_wall_messages;
 
         assert(message);
         assert(m);
@@ -2845,12 +2819,12 @@ const sd_bus_vtable manager_vtable[] = {
         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
-        SD_BUS_PROPERTY("RuntimeDirectorySize", "t", bus_property_get_size, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
-        SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_current_inhibitors, 0, 0),
+        SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
-        SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_current_sessions, 0, 0),
-        SD_BUS_PROPERTY("UserTasksMax", "t", NULL, offsetof(Manager, user_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
+        SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
+        SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
 
         SD_BUS_METHOD("GetSession", "s", "o", method_get_session, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
@@ -2883,14 +2857,14 @@ const sd_bus_vtable manager_vtable[] = {
         SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
-        SD_BUS_METHOD("SuspendToHibernate", "b", NULL, method_suspend_to_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("SuspendThenHibernate", "b", NULL, method_suspend_then_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("CanHalt", NULL, "s", method_can_halt, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
-        SD_BUS_METHOD("CanSuspendToHibernate", NULL, "s", method_can_suspend_to_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
+        SD_BUS_METHOD("CanSuspendThenHibernate", NULL, "s", method_can_suspend_then_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("ScheduleShutdown", "st", NULL, method_schedule_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("CancelScheduledShutdown", NULL, "b", method_cancel_scheduled_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
         SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED),
@@ -3113,78 +3087,6 @@ static int strdup_job(sd_bus_message *reply, char **job) {
         return 1;
 }
 
-int manager_start_slice(
-                Manager *manager,
-                const char *slice,
-                const char *description,
-                const char *after,
-                const char *after2,
-                uint64_t tasks_max,
-                sd_bus_error *error,
-                char **job) {
-
-        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
-        int r;
-
-        assert(manager);
-        assert(slice);
-        assert(job);
-
-        r = sd_bus_message_new_method_call(
-                        manager->bus,
-                        &m,
-                        "org.freedesktop.systemd1",
-                        "/org/freedesktop/systemd1",
-                        "org.freedesktop.systemd1.Manager",
-                        "StartTransientUnit");
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_append(m, "ss", strempty(slice), "fail");
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_open_container(m, 'a', "(sv)");
-        if (r < 0)
-                return r;
-
-        if (!isempty(description)) {
-                r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
-                if (r < 0)
-                        return r;
-        }
-
-        if (!isempty(after)) {
-                r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
-                if (r < 0)
-                        return r;
-        }
-
-        if (!isempty(after2)) {
-                r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
-                if (r < 0)
-                        return r;
-        }
-
-        r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_close_container(m);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_message_append(m, "a(sa(sv))", 0);
-        if (r < 0)
-                return r;
-
-        r = sd_bus_call(manager->bus, m, 0, error, &reply);
-        if (r < 0)
-                return r;
-
-        return strdup_job(reply, job);
-}
-
 int manager_start_scope(
                 Manager *manager,
                 const char *scope,
@@ -3193,7 +3095,7 @@ int manager_start_scope(
                 const char *description,
                 const char *after,
                 const char *after2,
-                uint64_t tasks_max,
+                sd_bus_message *more_properties,
                 sd_bus_error *error,
                 char **job) {
 
@@ -3247,13 +3149,8 @@ int manager_start_scope(
                         return r;
         }
 
-        /* cgroup empty notification is not available in containers
-         * currently. To make this less problematic, let's shorten the
-         * stop timeout for sessions, so that we don't wait
-         * forever. */
-
-        /* Make sure that the session shells are terminated with
-         * SIGHUP since bash and friends tend to ignore SIGTERM */
+        /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
+         * SIGTERM */
         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
         if (r < 0)
                 return r;
@@ -3262,9 +3159,17 @@ int manager_start_scope(
         if (r < 0)
                 return r;
 
-        r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
+        /* disable TasksMax= for the session scope, rely on the slice setting for it */
+        r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", (uint64_t)-1);
         if (r < 0)
-                return r;
+                return bus_log_create_error(r);
+
+        if (more_properties) {
+                /* If TasksMax also appears here, it will overwrite the default value set above */
+                r = sd_bus_message_copy(m, more_properties, true);
+                if (r < 0)
+                        return r;
+        }
 
         r = sd_bus_message_close_container(m);
         if (r < 0)