src/core/dbus-kill.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2012 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 "bus-util.h"
  23 #include "dbus-kill.h"
  24 #include "kill.h"
  25 #include "signal-util.h"
  26
  27 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_kill_mode, kill_mode, KillMode);
  28
  29 const sd_bus_vtable bus_kill_vtable[] = {
  30         SD_BUS_VTABLE_START(0),
  31         SD_BUS_PROPERTY("KillMode", "s", property_get_kill_mode, offsetof(KillContext, kill_mode), SD_BUS_VTABLE_PROPERTY_CONST),
  32         SD_BUS_PROPERTY("KillSignal", "i", bus_property_get_int, offsetof(KillContext, kill_signal), SD_BUS_VTABLE_PROPERTY_CONST),
  33         SD_BUS_PROPERTY("SendSIGKILL", "b", bus_property_get_bool, offsetof(KillContext, send_sigkill), SD_BUS_VTABLE_PROPERTY_CONST),
  34         SD_BUS_PROPERTY("SendSIGHUP", "b", bus_property_get_bool,  offsetof(KillContext, send_sighup), SD_BUS_VTABLE_PROPERTY_CONST),
  35         SD_BUS_VTABLE_END
  36 };
  37
  38 int bus_kill_context_set_transient_property(
  39                 Unit *u,
  40                 KillContext *c,
  41                 const char *name,
  42                 sd_bus_message *message,
  43                 UnitSetPropertiesMode mode,
  44                 sd_bus_error *error) {
  45
  46         int r;
  47
  48         assert(u);
  49         assert(c);
  50         assert(name);
  51         assert(message);
  52
  53         if (streq(name, "KillMode")) {
  54                 const char *m;
  55                 KillMode k;
  56
  57                 r = sd_bus_message_read(message, "s", &m);
  58                 if (r < 0)
  59                         return r;
  60
  61                 k = kill_mode_from_string(m);
  62                 if (k < 0)
  63                         return -EINVAL;
  64
  65                 if (mode != UNIT_CHECK) {
  66                         c->kill_mode = k;
  67
  68                         unit_write_drop_in_private_format(u, mode, name, "KillMode=%s\n", kill_mode_to_string(k));
  69                 }
  70
  71                 return 1;
  72
  73         } else if (streq(name, "KillSignal")) {
  74                 int sig;
  75
  76                 r = sd_bus_message_read(message, "i", &sig);
  77                 if (r < 0)
  78                         return r;
  79
  80                 if (sig <= 0 || sig >= _NSIG)
  81                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal %i out of range", sig);
  82
  83                 if (mode != UNIT_CHECK) {
  84                         c->kill_signal = sig;
  85
  86                         unit_write_drop_in_private_format(u, mode, name, "KillSignal=%s\n", signal_to_string(sig));
  87                 }
  88
  89                 return 1;
  90
  91         } else if (streq(name, "SendSIGHUP")) {
  92                 int b;
  93
  94                 r = sd_bus_message_read(message, "b", &b);
  95                 if (r < 0)
  96                         return r;
  97
  98                 if (mode != UNIT_CHECK) {
  99                         c->send_sighup = b;
 100
 101                         unit_write_drop_in_private_format(u, mode, name, "SendSIGHUP=%s\n", yes_no(b));
 102                 }
 103
 104                 return 1;
 105
 106         } else if (streq(name, "SendSIGKILL")) {
 107                 int b;
 108
 109                 r = sd_bus_message_read(message, "b", &b);
 110                 if (r < 0)
 111                         return r;
 112
 113                 if (mode != UNIT_CHECK) {
 114                         c->send_sigkill = b;
 115
 116                         unit_write_drop_in_private_format(u, mode, name, "SendSIGKILL=%s\n", yes_no(b));
 117                 }
 118
 119                 return 1;
 120
 121         }
 122
 123         return 0;
 124 }