#include "dbus-common.h"
#include "install.h"
#include "watchdog.h"
+#include "hwclock.h"
+#include "path-util.h"
#define BUS_MANAGER_INTERFACE_BEGIN \
" <interface name=\"org.freedesktop.systemd1.Manager\">\n"
" <method name=\"PowerOff\"/>\n" \
" <method name=\"Halt\"/>\n" \
" <method name=\"KExec\"/>\n" \
+ " <method name=\"SwitchRoot\">\n" \
+ " <arg name=\"new_root\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"init\" type=\"s\" direction=\"in\"/>\n" \
+ " </method>\n" \
" <method name=\"SetEnvironment\">\n" \
" <arg name=\"names\" type=\"as\" direction=\"in\"/>\n" \
" </method>\n" \
" <signal name=\"JobNew\">\n" \
" <arg name=\"id\" type=\"u\"/>\n" \
" <arg name=\"job\" type=\"o\"/>\n" \
+ " <arg name=\"unit\" type=\"s\"/>\n" \
" </signal>\n" \
" <signal name=\"JobRemoved\">\n" \
" <arg name=\"id\" type=\"u\"/>\n" \
" <arg name=\"job\" type=\"o\"/>\n" \
+ " <arg name=\"unit\" type=\"s\"/>\n" \
" <arg name=\"result\" type=\"s\"/>\n" \
" </signal>" \
" <signal name=\"StartupFinished\">\n" \
" <property name=\"Distribution\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Features\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"Tainted\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"RunningAs\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"InitRDTimestamp\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"InitRDTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"StartupTimestamp\" type=\"t\" access=\"read\"/>\n" \
" <property name=\"ConfirmSpawn\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"ShowStatus\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"UnitPath\" type=\"as\" access=\"read\"/>\n" \
- " <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n" \
" <property name=\"DefaultStandardOutput\" type=\"s\" access=\"read\"/>\n" \
const char bus_manager_interface[] _introspect_("Manager") = BUS_MANAGER_INTERFACE;
-static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_exec_output, exec_output, ExecOutput);
static int bus_manager_append_tainted(DBusMessageIter *i, const char *property, void *data) {
free(p);
if (access("/proc/cgroups", F_OK) < 0)
- stpcpy(e, "cgroups-missing:");
+ e = stpcpy(e, "cgroups-missing:");
if (hwclock_is_localtime() > 0)
- stpcpy(e, "local-hwclock:");
+ e = stpcpy(e, "local-hwclock:");
- if (endswith(buf, ":"))
- buf[strlen(buf)-1] = 0;
+ /* remove the last ':' */
+ if (e != buf)
+ e[-1] = 0;
t = buf;
};
static const BusProperty bus_manager_properties[] = {
- { "RunningAs", bus_manager_append_running_as, "s", offsetof(Manager, running_as) },
{ "Tainted", bus_manager_append_tainted, "s", 0 },
{ "InitRDTimestamp", bus_property_append_uint64, "t", offsetof(Manager, initrd_timestamp.realtime) },
{ "InitRDTimestampMonotonic", bus_property_append_uint64, "t", offsetof(Manager, initrd_timestamp.monotonic) },
{ "ConfirmSpawn", bus_property_append_bool, "b", offsetof(Manager, confirm_spawn) },
{ "ShowStatus", bus_property_append_bool, "b", offsetof(Manager, show_status) },
{ "UnitPath", bus_property_append_strv, "as", offsetof(Manager, lookup_paths.unit_path), true },
- { "NotifySocket", bus_property_append_string, "s", offsetof(Manager, notify_socket), true },
{ "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_hierarchy), true },
{ "DefaultControllers", bus_property_append_strv, "as", offsetof(Manager, default_controllers), true },
{ "DefaultStandardOutput", bus_manager_append_exec_output, "s", offsetof(Manager, default_std_output) },
m->exit_code = MANAGER_KEXEC;
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SwitchRoot")) {
+ const char *switch_root, *switch_root_init;
+ char *u, *v;
+ int k;
+
+ if (!dbus_message_get_args(
+ message,
+ &error,
+ DBUS_TYPE_STRING, &switch_root,
+ DBUS_TYPE_STRING, &switch_root_init,
+ DBUS_TYPE_INVALID))
+ return bus_send_error_reply(connection, message, &error, -EINVAL);
+
+ if (path_equal(switch_root, "/") || !path_is_absolute(switch_root))
+ return bus_send_error_reply(connection, message, NULL, -EINVAL);
+
+ if (!isempty(switch_root_init) && !path_is_absolute(switch_root_init))
+ return bus_send_error_reply(connection, message, NULL, -EINVAL);
+
+ if (m->running_as != MANAGER_SYSTEM) {
+ dbus_set_error(&error, BUS_ERROR_NOT_SUPPORTED, "Switching root is only supported for system managers.");
+ return bus_send_error_reply(connection, message, &error, -ENOTSUP);
+ }
+
+ /* Safety check */
+ if (isempty(switch_root_init))
+ k = access(switch_root, F_OK);
+ else {
+ char *p;
+
+ p = join(switch_root, "/", switch_root_init, NULL);
+ if (!p)
+ goto oom;
+
+ k = access(p, X_OK);
+ free(p);
+ }
+ if (k < 0)
+ return bus_send_error_reply(connection, message, NULL, -errno);
+
+ u = strdup(switch_root);
+ if (!u)
+ goto oom;
+
+ if (!isempty(switch_root_init)) {
+ v = strdup(switch_root_init);
+ if (!v) {
+ free(u);
+ goto oom;
+ }
+ } else
+ v = NULL;
+
+ free(m->switch_root);
+ free(m->switch_root_init);
+ m->switch_root = u;
+ m->switch_root_init = v;
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ m->exit_code = MANAGER_SWITCH_ROOT;
+
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
char **l = NULL, **e = NULL;
~ianmdlvl / elogind.git / blobdiff