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         "  <property name=\"PermissionsStartOnly\" type=\"b\" access=\"read\"/>\n" \
  54         "  <property name=\"RootDirectoryStartOnly\" type=\"b\" access=\"read\"/>\n" \
  55         "  <property name=\"RemainAfterExit\" type=\"b\" access=\"read\"/>\n" \
  56         BUS_EXEC_STATUS_INTERFACE("ExecMain")                           \
  57         "  <property name=\"MainPID\" type=\"u\" access=\"read\"/>\n"   \
  58         "  <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
  59         "  <property name=\"BusName\" type=\"s\" access=\"read\"/>\n"   \
  60         "  <property name=\"StatusText\" type=\"s\" access=\"read\"/>\n" \
  61         "  <property name=\"Result\" type=\"s\" access=\"read\"/>\n"    \
  62        " </interface>\n"
  63
  64 #define INTROSPECTION                                                   \
  65         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  66         "<node>\n"                                                      \
  67         BUS_UNIT_INTERFACE                                              \
  68         BUS_SERVICE_INTERFACE                                           \
  69         BUS_PROPERTIES_INTERFACE                                        \
  70         BUS_PEER_INTERFACE                                              \
  71         BUS_INTROSPECTABLE_INTERFACE                                    \
  72         "</node>\n"
  73
  74 #define INTERFACES_LIST                              \
  75         BUS_UNIT_INTERFACES_LIST                     \
  76         "org.freedesktop.systemd1.Service\0"
  77
  78 const char bus_service_interface[] _introspect_("Service") = BUS_SERVICE_INTERFACE;
  79
  80 const char bus_service_invalidating_properties[] =
  81         "ExecStartPre\0"
  82         "ExecStart\0"
  83         "ExecStartPost\0"
  84         "ExecReload\0"
  85         "ExecStop\0"
  86         "ExecStopPost\0"
  87         "ExecMain\0"
  88         "WatchdogTimestamp\0"
  89         "WatchdogTimestampMonotonic\0"
  90         "MainPID\0"
  91         "ControlPID\0"
  92         "StatusText\0"
  93         "Result\0";
  94
  95 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_type, service_type, ServiceType);
  96 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_restart, service_restart, ServiceRestart);
  97 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_notify_access, notify_access, NotifyAccess);
  98 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_service_result, service_result, ServiceResult);
  99 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_start_limit_action, start_limit_action, StartLimitAction);
 100 static DEFINE_BUS_PROPERTY_SET_ENUM(bus_service_set_start_limit_action, start_limit_action, StartLimitAction);
 101
 102 static const BusProperty bus_exec_main_status_properties[] = {
 103         { "ExecMainStartTimestamp",         bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.realtime)  },
 104         { "ExecMainStartTimestampMonotonic",bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.monotonic) },
 105         { "ExecMainExitTimestamp",          bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.realtime)  },
 106         { "ExecMainExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.monotonic) },
 107         { "ExecMainPID",                    bus_property_append_pid,  "u", offsetof(ExecStatus, pid)                       },
 108         { "ExecMainCode",                   bus_property_append_int,  "i", offsetof(ExecStatus, code)                      },
 109         { "ExecMainStatus",                 bus_property_append_int,  "i", offsetof(ExecStatus, status)                    },
 110         { NULL, }
 111 };
 112
 113 static const BusProperty bus_service_properties[] = {
 114         { "Type",                   bus_service_append_type,          "s", offsetof(Service, type)                         },
 115         { "Restart",                bus_service_append_restart,       "s", offsetof(Service, restart)                      },
 116         { "PIDFile",                bus_property_append_string,       "s", offsetof(Service, pid_file),               true },
 117         { "NotifyAccess",           bus_service_append_notify_access, "s", offsetof(Service, notify_access)                },
 118         { "RestartUSec",            bus_property_append_usec,         "t", offsetof(Service, restart_usec)                 },
 119         { "TimeoutUSec",            bus_property_append_usec,         "t", offsetof(Service, timeout_start_usec)           },
 120         { "TimeoutStartUSec",       bus_property_append_usec,         "t", offsetof(Service, timeout_start_usec)           },
 121         { "TimeoutStopUSec",        bus_property_append_usec,         "t", offsetof(Service, timeout_stop_usec)            },
 122         { "WatchdogUSec",           bus_property_append_usec,         "t", offsetof(Service, watchdog_usec)                },
 123         { "WatchdogTimestamp",      bus_property_append_usec,         "t", offsetof(Service, watchdog_timestamp.realtime)  },
 124         { "WatchdogTimestampMonotonic",bus_property_append_usec,      "t", offsetof(Service, watchdog_timestamp.monotonic) },
 125         { "StartLimitInterval",     bus_property_append_usec,         "t", offsetof(Service, start_limit.interval)         },
 126         { "StartLimitBurst",        bus_property_append_uint32,       "u", offsetof(Service, start_limit.burst)            },
 127         { "StartLimitAction",       bus_service_append_start_limit_action,"s", offsetof(Service, start_limit_action), false, bus_service_set_start_limit_action},
 128         BUS_EXEC_COMMAND_PROPERTY("ExecStartPre",  offsetof(Service, exec_command[SERVICE_EXEC_START_PRE]),  true ),
 129         BUS_EXEC_COMMAND_PROPERTY("ExecStart",     offsetof(Service, exec_command[SERVICE_EXEC_START]),      true ),
 130         BUS_EXEC_COMMAND_PROPERTY("ExecStartPost", offsetof(Service, exec_command[SERVICE_EXEC_START_POST]), true ),
 131         BUS_EXEC_COMMAND_PROPERTY("ExecReload",    offsetof(Service, exec_command[SERVICE_EXEC_RELOAD]),     true ),
 132         BUS_EXEC_COMMAND_PROPERTY("ExecStop",      offsetof(Service, exec_command[SERVICE_EXEC_STOP]),       true ),
 133         BUS_EXEC_COMMAND_PROPERTY("ExecStopPost",  offsetof(Service, exec_command[SERVICE_EXEC_STOP_POST]),  true ),
 134         { "PermissionsStartOnly",   bus_property_append_bool,         "b", offsetof(Service, permissions_start_only)       },
 135         { "RootDirectoryStartOnly", bus_property_append_bool,         "b", offsetof(Service, root_directory_start_only)    },
 136         { "RemainAfterExit",        bus_property_append_bool,         "b", offsetof(Service, remain_after_exit)            },
 137         { "GuessMainPID",           bus_property_append_bool,         "b", offsetof(Service, guess_main_pid)               },
 138         { "MainPID",                bus_property_append_pid,          "u", offsetof(Service, main_pid)                     },
 139         { "ControlPID",             bus_property_append_pid,          "u", offsetof(Service, control_pid)                  },
 140         { "BusName",                bus_property_append_string,       "s", offsetof(Service, bus_name),               true },
 141         { "StatusText",             bus_property_append_string,       "s", offsetof(Service, status_text),            true },
 142         { "Result",                 bus_service_append_service_result,"s", offsetof(Service, result)                       },
 143         { NULL, }
 144 };
 145
 146 DBusHandlerResult bus_service_message_handler(Unit *u, DBusConnection *connection, DBusMessage *message) {
 147         Service *s = SERVICE(u);
 148
 149         const BusBoundProperties bps[] = {
 150                 { "org.freedesktop.systemd1.Unit",    bus_unit_properties,             u },
 151                 { "org.freedesktop.systemd1.Service", bus_service_properties,          s },
 152                 { "org.freedesktop.systemd1.Service", bus_exec_context_properties,     &s->exec_context },
 153                 { "org.freedesktop.systemd1.Service", bus_kill_context_properties,     &s->kill_context },
 154                 { "org.freedesktop.systemd1.Service", bus_exec_main_status_properties, &s->main_exec_status },
 155                 { NULL, }
 156         };
 157
 158         SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "status");
 159
 160         return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
 161 }