src/core/dbus-kill.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2012 Lennart Poettering
   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-kill.h"
  23 #include "kill.h"
  24 #include "signal-util.h"
  25
  26 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_kill_mode, kill_mode, KillMode);
  27
  28 const sd_bus_vtable bus_kill_vtable[] = {
  29         SD_BUS_VTABLE_START(0),
  30         SD_BUS_PROPERTY("KillMode", "s", property_get_kill_mode, offsetof(KillContext, kill_mode), SD_BUS_VTABLE_PROPERTY_CONST),
  31         SD_BUS_PROPERTY("KillSignal", "i", bus_property_get_int, offsetof(KillContext, kill_signal), SD_BUS_VTABLE_PROPERTY_CONST),
  32         SD_BUS_PROPERTY("SendSIGKILL", "b", bus_property_get_bool, offsetof(KillContext, send_sigkill), SD_BUS_VTABLE_PROPERTY_CONST),
  33         SD_BUS_PROPERTY("SendSIGHUP", "b", bus_property_get_bool,  offsetof(KillContext, send_sighup), SD_BUS_VTABLE_PROPERTY_CONST),
  34         SD_BUS_VTABLE_END
  35 };
  36
  37 int bus_kill_context_set_transient_property(
  38                 Unit *u,
  39                 KillContext *c,
  40                 const char *name,
  41                 sd_bus_message *message,
  42                 UnitWriteFlags flags,
  43                 sd_bus_error *error) {
  44
  45         int r;
  46
  47         assert(u);
  48         assert(c);
  49         assert(name);
  50         assert(message);
  51
  52         flags |= UNIT_PRIVATE;
  53
  54         if (streq(name, "KillMode")) {
  55                 const char *m;
  56                 KillMode k;
  57
  58                 r = sd_bus_message_read(message, "s", &m);
  59                 if (r < 0)
  60                         return r;
  61
  62                 k = kill_mode_from_string(m);
  63                 if (k < 0)
  64                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Kill mode '%s' not known.", m);
  65
  66                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
  67                         c->kill_mode = k;
  68
  69                         unit_write_settingf(u, flags, name, "KillMode=%s", kill_mode_to_string(k));
  70                 }
  71
  72                 return 1;
  73
  74         } else if (streq(name, "KillSignal")) {
  75                 int sig;
  76
  77                 r = sd_bus_message_read(message, "i", &sig);
  78                 if (r < 0)
  79                         return r;
  80
  81                 if (!SIGNAL_VALID(sig))
  82                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Signal %i out of range", sig);
  83
  84                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
  85                         c->kill_signal = sig;
  86
  87                         unit_write_settingf(u, flags, name, "KillSignal=%s", signal_to_string(sig));
  88                 }
  89
  90                 return 1;
  91
  92         } else if (streq(name, "SendSIGHUP")) {
  93                 int b;
  94
  95                 r = sd_bus_message_read(message, "b", &b);
  96                 if (r < 0)
  97                         return r;
  98
  99                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
 100                         c->send_sighup = b;
 101
 102                         unit_write_settingf(u, flags, name, "SendSIGHUP=%s", yes_no(b));
 103                 }
 104
 105                 return 1;
 106
 107         } else if (streq(name, "SendSIGKILL")) {
 108                 int b;
 109
 110                 r = sd_bus_message_read(message, "b", &b);
 111                 if (r < 0)
 112                         return r;
 113
 114                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {
 115                         c->send_sigkill = b;
 116
 117                         unit_write_settingf(u, flags, name, "SendSIGKILL=%s", yes_no(b));
 118                 }
 119
 120                 return 1;
 121
 122         }
 123
 124         return 0;
 125 }