src/core/dbus-service.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU Lesser General Public License as published by
  10   the Free Software Foundation; either version 2.1 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   Lesser General Public License for more details.
  17
  18   You should have received a copy of the GNU Lesser General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <errno.h>
  23
  24 #include "dbus-unit.h"
  25 #include "dbus-execute.h"
  26 #include "dbus-kill.h"
  27 #include "dbus-service.h"
  28 #include "dbus-common.h"
  29 #include "selinux-access.h"
  30
  31 #define BUS_SERVICE_INTERFACE                                           \
  32         " <interface name=\"org.freedesktop.systemd1.Service\">\n"      \
  33         "  <property name=\"Type\" type=\"s\" access=\"read\"/>\n"      \
  34         "  <property name=\"Restart\" type=\"s\" access=\"read\"/>\n"   \
  35         "  <property name=\"PIDFile\" type=\"s\" access=\"read\"/>\n"   \
  36         "  <property name=\"NotifyAccess\" type=\"s\" access=\"read\"/>\n" \
  37         "  <property name=\"RestartUSec\" type=\"t\" access=\"read\"/>\n" \
  38         "  <property name=\"TimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
  39         "  <property name=\"WatchdogUSec\" type=\"t\" access=\"read\"/>\n" \
  40         "  <property name=\"WatchdogTimestamp\" type=\"t\" access=\"read\"/>\n" \
  41         "  <property name=\"WatchdogTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
  42         "  <property name=\"StartLimitInterval\" type=\"t\" access=\"read\"/>\n" \
  43         "  <property name=\"StartLimitBurst\" type=\"u\" access=\"read\"/>\n" \
  44         "  <property name=\"StartLimitAction\" type=\"s\" access=\"readwrite\"/>\n" \
  45         BUS_EXEC_COMMAND_INTERFACE("ExecStartPre")                      \
  46         BUS_EXEC_COMMAND_INTERFACE("ExecStart")                         \
  47         BUS_EXEC_COMMAND_INTERFACE("ExecStartPost")                     \
  48         BUS_EXEC_COMMAND_INTERFACE("ExecReload")                        \
  49         BUS_EXEC_COMMAND_INTERFACE("ExecStop")                          \
  50         BUS_EXEC_COMMAND_INTERFACE("ExecStopPost")                      \
  51         BUS_EXEC_CONTEXT_INTERFACE                                      \
  52         BUS_KILL_CONTEXT_INTERFACE                                      \
  53         BUS_UNIT_CGROUP_INTERFACE                                       \
  54         "  <property name=\"PermissionsStartOnly\" type=\"b\" access=\"read\"/>\n" \
  55         "  <property name=\"RootDirectoryStartOnly\" type=\"b\" access=\"read\"/>\n" \
  56         "  <property name=\"RemainAfterExit\" type=\"b\" access=\"read\"/>\n" \
  57         BUS_EXEC_STATUS_INTERFACE("ExecMain")                           \
  58         "  <property name=\"MainPID\" type=\"u\" access=\"read\"/>\n"   \
  59         "  <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
  60         "  <property name=\"BusName\" type=\"s\" access=\"read\"/>\n"   \
  61         "  <property name=\"StatusText\" type=\"s\" access=\"read\"/>\n" \
  62         "  <property name=\"Result\" type=\"s\" access=\"read\"/>\n"    \
  63        " </interface>\n"
  64
  65 #define INTROSPECTION                                                   \
  66         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  67         "<node>\n"                                                      \
  68         BUS_UNIT_INTERFACE                                              \
  69         BUS_SERVICE_INTERFACE                                           \
  70         BUS_PROPERTIES_INTERFACE                                        \
  71         BUS_PEER_INTERFACE                                              \
  72         BUS_INTROSPECTABLE_INTERFACE                                    \
  73         "</node>\n"
  74
  75 #define INTERFACES_LIST                              \
  76         BUS_UNIT_INTERFACES_LIST                     \
  77         "org.freedesktop.systemd1.Service\0"
  78
  79 const char bus_service_interface[] _introspect_("Service") = BUS_SERVICE_INTERFACE;
  80
  81 const char bus_service_invalidating_properties[] =
  82         "ExecStartPre\0"
  83         "ExecStart\0"
  84         "ExecStartPost\0"
  85         "ExecReload\0"
  86         "ExecStop\0"
  87         "ExecStopPost\0"
  88         "ExecMain\0"
  89         "WatchdogTimestamp\0"
  90         "WatchdogTimestampMonotonic\0"
  91         "MainPID\0"
  92         "ControlPID\0"
  93         "StatusText\0"
  94         "Result\0";
  95
  96 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_type, service_type, ServiceType);
  97 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_restart, service_restart, ServiceRestart);
  98 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_notify_access, notify_access, NotifyAccess);
  99 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_service_result, service_result, ServiceResult);
 100 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_start_limit_action, start_limit_action, StartLimitAction);
 101 static DEFINE_BUS_PROPERTY_SET_ENUM(bus_service_set_start_limit_action, start_limit_action, StartLimitAction);
 102
 103 static const BusProperty bus_exec_main_status_properties[] = {
 104         { "ExecMainStartTimestamp",         bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.realtime)  },
 105         { "ExecMainStartTimestampMonotonic",bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.monotonic) },
 106         { "ExecMainExitTimestamp",          bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.realtime)  },
 107         { "ExecMainExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.monotonic) },
 108         { "ExecMainPID",                    bus_property_append_pid,  "u", offsetof(ExecStatus, pid)                       },
 109         { "ExecMainCode",                   bus_property_append_int,  "i", offsetof(ExecStatus, code)                      },
 110         { "ExecMainStatus",                 bus_property_append_int,  "i", offsetof(ExecStatus, status)                    },
 111         { NULL, }
 112 };
 113
 114 static const BusProperty bus_service_properties[] = {
 115         { "Type",                   bus_service_append_type,          "s", offsetof(Service, type)                         },
 116         { "Restart",                bus_service_append_restart,       "s", offsetof(Service, restart)                      },
 117         { "PIDFile",                bus_property_append_string,       "s", offsetof(Service, pid_file),               true },
 118         { "NotifyAccess",           bus_service_append_notify_access, "s", offsetof(Service, notify_access)                },
 119         { "RestartUSec",            bus_property_append_usec,         "t", offsetof(Service, restart_usec)                 },
 120         { "TimeoutUSec",            bus_property_append_usec,         "t", offsetof(Service, timeout_start_usec)           },
 121         { "TimeoutStartUSec",       bus_property_append_usec,         "t", offsetof(Service, timeout_start_usec)           },
 122         { "TimeoutStopUSec",        bus_property_append_usec,         "t", offsetof(Service, timeout_stop_usec)            },
 123         { "WatchdogUSec",           bus_property_append_usec,         "t", offsetof(Service, watchdog_usec)                },
 124         { "WatchdogTimestamp",      bus_property_append_usec,         "t", offsetof(Service, watchdog_timestamp.realtime)  },
 125         { "WatchdogTimestampMonotonic",bus_property_append_usec,      "t", offsetof(Service, watchdog_timestamp.monotonic) },
 126         { "StartLimitInterval",     bus_property_append_usec,         "t", offsetof(Service, start_limit.interval)         },
 127         { "StartLimitBurst",        bus_property_append_uint32,       "u", offsetof(Service, start_limit.burst)            },
 128         { "StartLimitAction",       bus_service_append_start_limit_action,"s", offsetof(Service, start_limit_action), false, bus_service_set_start_limit_action},
 129         BUS_EXEC_COMMAND_PROPERTY("ExecStartPre",  offsetof(Service, exec_command[SERVICE_EXEC_START_PRE]),  true ),
 130         BUS_EXEC_COMMAND_PROPERTY("ExecStart",     offsetof(Service, exec_command[SERVICE_EXEC_START]),      true ),
 131         BUS_EXEC_COMMAND_PROPERTY("ExecStartPost", offsetof(Service, exec_command[SERVICE_EXEC_START_POST]), true ),
 132         BUS_EXEC_COMMAND_PROPERTY("ExecReload",    offsetof(Service, exec_command[SERVICE_EXEC_RELOAD]),     true ),
 133         BUS_EXEC_COMMAND_PROPERTY("ExecStop",      offsetof(Service, exec_command[SERVICE_EXEC_STOP]),       true ),
 134         BUS_EXEC_COMMAND_PROPERTY("ExecStopPost",  offsetof(Service, exec_command[SERVICE_EXEC_STOP_POST]),  true ),
 135         { "PermissionsStartOnly",   bus_property_append_bool,         "b", offsetof(Service, permissions_start_only)       },
 136         { "RootDirectoryStartOnly", bus_property_append_bool,         "b", offsetof(Service, root_directory_start_only)    },
 137         { "RemainAfterExit",        bus_property_append_bool,         "b", offsetof(Service, remain_after_exit)            },
 138         { "GuessMainPID",           bus_property_append_bool,         "b", offsetof(Service, guess_main_pid)               },
 139         { "MainPID",                bus_property_append_pid,          "u", offsetof(Service, main_pid)                     },
 140         { "ControlPID",             bus_property_append_pid,          "u", offsetof(Service, control_pid)                  },
 141         { "BusName",                bus_property_append_string,       "s", offsetof(Service, bus_name),               true },
 142         { "StatusText",             bus_property_append_string,       "s", offsetof(Service, status_text),            true },
 143         { "Result",                 bus_service_append_service_result,"s", offsetof(Service, result)                       },
 144         { NULL, }
 145 };
 146
 147 DBusHandlerResult bus_service_message_handler(Unit *u, DBusConnection *connection, DBusMessage *message) {
 148         Service *s = SERVICE(u);
 149
 150         const BusBoundProperties bps[] = {
 151                 { "org.freedesktop.systemd1.Unit",    bus_unit_properties,             u },
 152                 { "org.freedesktop.systemd1.Service", bus_service_properties,          s },
 153                 { "org.freedesktop.systemd1.Service", bus_exec_context_properties,     &s->exec_context },
 154                 { "org.freedesktop.systemd1.Service", bus_kill_context_properties,     &s->kill_context },
 155                 { "org.freedesktop.systemd1.Service", bus_exec_main_status_properties, &s->main_exec_status },
 156                 { "org.freedesktop.systemd1.Service", bus_unit_cgroup_properties,      u },
 157                 { NULL, }
 158         };
 159
 160         SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "status");
 161
 162         return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
 163 }