src/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 General Public License as published by
  10   the Free Software Foundation; either version 2 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   General Public License for more details.
  17
  18   You should have received a copy of the GNU 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-service.h"
  27 #include "dbus-common.h"
  28
  29 #ifdef HAVE_SYSV_COMPAT
  30 #define BUS_SERVICE_SYSV_INTERFACE_FRAGMENT                            \
  31         "  <property name=\"SysVStartPriority\" type=\"i\" access=\"read\"/>\n" \
  32         "  <property name=\"SysVRunLevels\" type=\"s\" access=\"read\"/>\n" \
  33         "  <property name=\"SysVPath\" type=\"s\" access=\"read\"/>\n"
  34 #else
  35 #define BUS_SERVICE_SYSV_INTERFACE_FRAGMENT ""
  36 #endif
  37
  38 #define BUS_SERVICE_INTERFACE                                           \
  39         " <interface name=\"org.freedesktop.systemd1.Service\">\n"      \
  40         "  <property name=\"Type\" type=\"s\" access=\"read\"/>\n"      \
  41         "  <property name=\"Restart\" type=\"s\" access=\"read\"/>\n"   \
  42         "  <property name=\"PIDFile\" type=\"s\" access=\"read\"/>\n"   \
  43         "  <property name=\"NotifyAccess\" type=\"s\" access=\"read\"/>\n" \
  44         "  <property name=\"RestartUSec\" type=\"t\" access=\"read\"/>\n" \
  45         "  <property name=\"TimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
  46         "  <property name=\"WatchdogTimestamp\" type=\"t\" access=\"read\"/>\n" \
  47         "  <property name=\"WatchdogTimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
  48         BUS_EXEC_COMMAND_INTERFACE("ExecStartPre")                      \
  49         BUS_EXEC_COMMAND_INTERFACE("ExecStart")                         \
  50         BUS_EXEC_COMMAND_INTERFACE("ExecStartPost")                     \
  51         BUS_EXEC_COMMAND_INTERFACE("ExecReload")                        \
  52         BUS_EXEC_COMMAND_INTERFACE("ExecStop")                          \
  53         BUS_EXEC_COMMAND_INTERFACE("ExecStopPost")                      \
  54         BUS_EXEC_CONTEXT_INTERFACE                                      \
  55         "  <property name=\"PermissionsStartOnly\" type=\"b\" access=\"read\"/>\n" \
  56         "  <property name=\"RootDirectoryStartOnly\" type=\"b\" access=\"read\"/>\n" \
  57         "  <property name=\"RemainAfterExit\" type=\"b\" access=\"read\"/>\n" \
  58         BUS_EXEC_STATUS_INTERFACE("ExecMain")                           \
  59         "  <property name=\"MainPID\" type=\"u\" access=\"read\"/>\n"   \
  60         "  <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
  61         "  <property name=\"BusName\" type=\"s\" access=\"read\"/>\n"   \
  62         "  <property name=\"StatusText\" type=\"s\" access=\"read\"/>\n" \
  63         "  <property name=\"FsckPassNo\" type=\"i\" access=\"read\"/>\n" \
  64         "  <property name=\"Result\" type=\"s\" access=\"read\"/>\n"    \
  65         BUS_SERVICE_SYSV_INTERFACE_FRAGMENT                             \
  66        " </interface>\n"
  67
  68 #define INTROSPECTION                                                   \
  69         DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE                       \
  70         "<node>\n"                                                      \
  71         BUS_UNIT_INTERFACE                                              \
  72         BUS_SERVICE_INTERFACE                                           \
  73         BUS_PROPERTIES_INTERFACE                                        \
  74         BUS_PEER_INTERFACE                                              \
  75         BUS_INTROSPECTABLE_INTERFACE                                    \
  76         "</node>\n"
  77
  78 #define INTERFACES_LIST                              \
  79         BUS_UNIT_INTERFACES_LIST                     \
  80         "org.freedesktop.systemd1.Service\0"
  81
  82 const char bus_service_interface[] _introspect_("Service") = BUS_SERVICE_INTERFACE;
  83
  84 const char bus_service_invalidating_properties[] =
  85         "ExecStartPre\0"
  86         "ExecStart\0"
  87         "ExecStartPost\0"
  88         "ExecReload\0"
  89         "ExecStop\0"
  90         "ExecStopPost\0"
  91         "ExecMain\0"
  92         "WatchdogTimestamp\0"
  93         "WatchdogTimestampMonotonic\0"
  94         "MainPID\0"
  95         "ControlPID\0"
  96         "StatusText\0"
  97         "Result\0";
  98
  99 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_type, service_type, ServiceType);
 100 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_restart, service_restart, ServiceRestart);
 101 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_notify_access, notify_access, NotifyAccess);
 102 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_service_append_service_result, service_result, ServiceResult);
 103
 104 static const BusProperty bus_exec_main_status_properties[] = {
 105         { "ExecMainStartTimestamp",         bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.realtime)  },
 106         { "ExecMainStartTimestampMonotonic",bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.monotonic) },
 107         { "ExecMainExitTimestamp",          bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.realtime)  },
 108         { "ExecMainExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(ExecStatus, start_timestamp.monotonic) },
 109         { "ExecMainPID",                    bus_property_append_pid,  "u", offsetof(ExecStatus, pid)                       },
 110         { "ExecMainCode",                   bus_property_append_int,  "i", offsetof(ExecStatus, code)                      },
 111         { "ExecMainStatus",                 bus_property_append_int,  "i", offsetof(ExecStatus, status)                    },
 112         { NULL, }
 113 };
 114
 115 static const BusProperty bus_service_properties[] = {
 116         { "Type",                   bus_service_append_type,          "s", offsetof(Service, type)                         },
 117         { "Restart",                bus_service_append_restart,       "s", offsetof(Service, restart)                      },
 118         { "PIDFile",                bus_property_append_string,       "s", offsetof(Service, pid_file),               true },
 119         { "NotifyAccess",           bus_service_append_notify_access, "s", offsetof(Service, notify_access)                },
 120         { "RestartUSec",            bus_property_append_usec,         "t", offsetof(Service, restart_usec)                 },
 121         { "TimeoutUSec",            bus_property_append_usec,         "t", offsetof(Service, timeout_usec)                 },
 122         { "WatchdogTimestamp",      bus_property_append_usec,         "t", offsetof(Service, watchdog_timestamp.realtime)  },
 123         { "WatchdogTimestampMonotonic",bus_property_append_usec,      "t", offsetof(Service, watchdog_timestamp.monotonic) },
 124         BUS_EXEC_COMMAND_PROPERTY("ExecStartPre",  offsetof(Service, exec_command[SERVICE_EXEC_START_PRE]),  true ),
 125         BUS_EXEC_COMMAND_PROPERTY("ExecStart",     offsetof(Service, exec_command[SERVICE_EXEC_START]),      true ),
 126         BUS_EXEC_COMMAND_PROPERTY("ExecStartPost", offsetof(Service, exec_command[SERVICE_EXEC_START_POST]), true ),
 127         BUS_EXEC_COMMAND_PROPERTY("ExecReload",    offsetof(Service, exec_command[SERVICE_EXEC_RELOAD]),     true ),
 128         BUS_EXEC_COMMAND_PROPERTY("ExecStop",      offsetof(Service, exec_command[SERVICE_EXEC_STOP]),       true ),
 129         BUS_EXEC_COMMAND_PROPERTY("ExecStopPost",  offsetof(Service, exec_command[SERVICE_EXEC_STOP_POST]),  true ),
 130         { "PermissionsStartOnly",   bus_property_append_bool,         "b", offsetof(Service, permissions_start_only)       },
 131         { "RootDirectoryStartOnly", bus_property_append_bool,         "b", offsetof(Service, root_directory_start_only)    },
 132         { "RemainAfterExit",        bus_property_append_bool,         "b", offsetof(Service, remain_after_exit)            },
 133         { "GuessMainPID",           bus_property_append_bool,         "b", offsetof(Service, guess_main_pid)               },
 134         { "MainPID",                bus_property_append_pid,          "u", offsetof(Service, main_pid)                     },
 135         { "ControlPID",             bus_property_append_pid,          "u", offsetof(Service, control_pid)                  },
 136         { "BusName",                bus_property_append_string,       "s", offsetof(Service, bus_name),               true },
 137         { "StatusText",             bus_property_append_string,       "s", offsetof(Service, status_text),            true },
 138 #ifdef HAVE_SYSV_COMPAT
 139         { "SysVRunLevels",          bus_property_append_string,       "s", offsetof(Service, sysv_runlevels),         true },
 140         { "SysVStartPriority",      bus_property_append_int,          "i", offsetof(Service, sysv_start_priority)          },
 141         { "SysVPath",               bus_property_append_string,       "s", offsetof(Service, sysv_path),              true },
 142 #endif
 143         { "FsckPassNo",             bus_property_append_int,          "i", offsetof(Service, fsck_passno)                  },
 144         { "Result",                 bus_service_append_service_result,"s", offsetof(Service, result)                       },
 145         { NULL, }
 146 };
 147
 148 DBusHandlerResult bus_service_message_handler(Unit *u, DBusConnection *connection, DBusMessage *message) {
 149         Service *s = SERVICE(u);
 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_exec_main_status_properties, &s->main_exec_status },
 155                 { NULL, }
 156         };
 157
 158         return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
 159 }