src/core/dbus-swap.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   Copyright 2010 Maarten Lankhorst
   8
   9   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include "unit.h"
  24 #include "swap.h"
  25 #include "dbus-unit.h"
  26 #include "dbus-execute.h"
  27 #include "dbus-kill.h"
  28 #include "dbus-cgroup.h"
  29 #include "dbus-swap.h"
  30 #include "bus-util.h"
  31
  32 static int property_get_priority(
  33                 sd_bus *bus,
  34                 const char *path,
  35                 const char *interface,
  36                 const char *property,
  37                 sd_bus_message *reply,
  38                 void *userdata,
  39                 sd_bus_error *error) {
  40
  41         Swap *s = SWAP(userdata);
  42         int p;
  43
  44         assert(bus);
  45         assert(reply);
  46         assert(s);
  47
  48         if (s->from_proc_swaps)
  49                 p = s->parameters_proc_swaps.priority;
  50         else if (s->from_fragment)
  51                 p = s->parameters_fragment.priority;
  52         else
  53                 p = -1;
  54
  55         return sd_bus_message_append(reply, "i", p);
  56 }
  57
  58 static int property_get_discard(
  59                 sd_bus *bus,
  60                 const char *path,
  61                 const char *interface,
  62                 const char *property,
  63                 sd_bus_message *reply,
  64                 void *userdata,
  65                 sd_bus_error *error) {
  66
  67         Swap *s = SWAP(userdata);
  68         const char *p;
  69
  70         assert(bus);
  71         assert(reply);
  72         assert(s);
  73
  74         if (s->from_fragment)
  75                 p = s->parameters_fragment.discard ?: "none";
  76         else
  77                 p = "none";
  78         return sd_bus_message_append(reply, "s", p);
  79 }
  80
  81 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_result, swap_result, SwapResult);
  82
  83 const sd_bus_vtable bus_swap_vtable[] = {
  84         SD_BUS_VTABLE_START(0),
  85         SD_BUS_PROPERTY("What", "s", NULL, offsetof(Swap, what), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  86         SD_BUS_PROPERTY("Priority", "i", property_get_priority, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  87         SD_BUS_PROPERTY("Discard", "s", property_get_discard, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  88         SD_BUS_PROPERTY("TimeoutUSec", "t", bus_property_get_usec, offsetof(Swap, timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
  89         SD_BUS_PROPERTY("ControlPID", "u", bus_property_get_pid, offsetof(Swap, control_pid), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  90         SD_BUS_PROPERTY("Result", "s", property_get_result, offsetof(Swap, result), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
  91         BUS_EXEC_COMMAND_VTABLE("ExecActivate", offsetof(Swap, exec_command[SWAP_EXEC_ACTIVATE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
  92         BUS_EXEC_COMMAND_VTABLE("ExecDeactivate", offsetof(Swap, exec_command[SWAP_EXEC_DEACTIVATE]), SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION),
  93         SD_BUS_VTABLE_END
  94 };
  95
  96 int bus_swap_set_property(
  97                 Unit *u,
  98                 const char *name,
  99                 sd_bus_message *message,
 100                 UnitSetPropertiesMode mode,
 101                 sd_bus_error *error) {
 102
 103         Swap *s = SWAP(u);
 104
 105         assert(s);
 106         assert(name);
 107         assert(message);
 108
 109         return bus_cgroup_set_property(u, &s->cgroup_context, name, message, mode, error);
 110 }
 111
 112 int bus_swap_commit_properties(Unit *u) {
 113         assert(u);
 114
 115         unit_update_cgroup_members_masks(u);
 116         unit_realize_cgroup(u);
 117
 118         return 0;
 119 }