src/core/dbus-swap.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2010 Lennart Poettering
   5   Copyright 2010 Maarten Lankhorst
   6
   7   systemd is free software; you can redistribute it and/or modify it
   8   under the terms of the GNU Lesser General Public License as published by
   9   the Free Software Foundation; either version 2.1 of the License, or
  10   (at your option) any later version.
  11
  12   systemd is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   Lesser General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  19 ***/
  20
  21 #include "bus-util.h"
  22 #include "dbus-cgroup.h"
  23 #include "dbus-execute.h"
  24 #include "dbus-swap.h"
  25 #include "string-util.h"
  26 #include "swap.h"
  27 #include "unit.h"
  28
  29 static int property_get_priority(
  30                 sd_bus *bus,
  31                 const char *path,
  32                 const char *interface,
  33                 const char *property,
  34                 sd_bus_message *reply,
  35                 void *userdata,
  36                 sd_bus_error *error) {
  37
  38         Swap *s = SWAP(userdata);
  39         int p;
  40
  41         assert(bus);
  42         assert(reply);
  43         assert(s);
  44
  45         if (s->from_proc_swaps)
  46                 p = s->parameters_proc_swaps.priority;
  47         else if (s->from_fragment)
  48                 p = s->parameters_fragment.priority;
  49         else
  50                 p = -1;
  51
  52         return sd_bus_message_append(reply, "i", p);
  53 }
  54
  55 static int property_get_options(
  56                 sd_bus *bus,
  57                 const char *path,
  58                 const char *interface,
  59                 const char *property,
  60                 sd_bus_message *reply,
  61                 void *userdata,
  62                 sd_bus_error *error) {
  63
  64         Swap *s = SWAP(userdata);
  65         const char *options = NULL;
  66
  67         assert(bus);
  68         assert(reply);
  69         assert(s);
  70
  71         if (s->from_fragment)
  72                 options = s->parameters_fragment.options;
  73
  74         return sd_bus_message_append(reply, "s", options);
  75 }
  76
  77 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, swap_result, SwapResult);
  78
  79 const sd_bus_vtable bus_swap_vtable[] = {
  80         SD_BUS_VTABLE_START(0),
  81         SD_BUS_PROPERTY("What", "s", NULL, offsetof(Swap, what), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  82         SD_BUS_PROPERTY("Priority", "i", property_get_priority, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  83         SD_BUS_PROPERTY("Options", "s", property_get_options, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  84         SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Swap, timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
  85         SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Swap, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  86         SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Swap, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  87         BUS_EXEC_COMMAND_VTABLE("ExecActivate", offsetof(Swap, exec_command[SWAP_EXEC_ACTIVATE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
  88         BUS_EXEC_COMMAND_VTABLE("ExecDeactivate", offsetof(Swap, exec_command[SWAP_EXEC_DEACTIVATE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
  89         SD_BUS_VTABLE_END
  90 };
  91
  92 int bus_swap_set_property(
  93                 Unit *u,
  94                 const char *name,
  95                 sd_bus_message *message,
  96                 UnitSetPropertiesMode mode,
  97                 sd_bus_error *error) {
  98
  99         Swap *s = SWAP(u);
 100
 101         assert(s);
 102         assert(name);
 103         assert(message);
 104
 105         return bus_cgroup_set_property(u, &s->cgroup_context, name, message, mode, error);
 106 }
 107
 108 int bus_swap_commit_properties(Unit *u) {
 109         assert(u);
 110
 111         unit_update_cgroup_members_masks(u);
 112         unit_realize_cgroup(u);
 113
 114         return 0;
 115 }