src/login/test-inhibit.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 <unistd.h>
  22
  23 #include "sd-bus.h"
  24
  25 #include "bus-util.h"
  26 #include "fd-util.h"
  27 #include "macro.h"
  28 #include "util.h"
  29
  30 static int inhibit(sd_bus *bus, const char *what) {
  31         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  32         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  33         const char *who = "Test Tool", *reason = "Just because!", *mode = "block";
  34         int fd;
  35         int r;
  36
  37         r = sd_bus_call_method(bus,
  38                         "org.freedesktop.login1",
  39                         "/org/freedesktop/login1",
  40                         "org.freedesktop.login1.Manager",
  41                         "Inhibit",
  42                         &error,
  43                         &reply,
  44                         "ssss", what, who, reason, mode);
  45         assert_se(r >= 0);
  46
  47         r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
  48         assert_se(r >= 0);
  49         assert_se(fd >= 0);
  50
  51         return dup(fd);
  52 }
  53
  54 static void print_inhibitors(sd_bus *bus) {
  55         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  56         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  57         const char *what, *who, *why, *mode;
  58         uint32_t uid, pid;
  59         unsigned n = 0;
  60         int r;
  61
  62         r = sd_bus_call_method(bus,
  63                         "org.freedesktop.login1",
  64                         "/org/freedesktop/login1",
  65                         "org.freedesktop.login1.Manager",
  66                         "ListInhibitors",
  67                         &error,
  68                         &reply,
  69                         "");
  70         assert_se(r >= 0);
  71
  72         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
  73         assert_se(r >= 0);
  74
  75         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
  76                 printf("what=<%s> who=<%s> why=<%s> mode=<%s> uid=<%"PRIu32"> pid=<%"PRIu32">\n",
  77                        what, who, why, mode, uid, pid);
  78
  79                 n++;
  80         }
  81         assert_se(r >= 0);
  82
  83         printf("%u inhibitors\n", n);
  84 }
  85
  86 int main(int argc, char*argv[]) {
  87         _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
  88         int fd1, fd2;
  89         int r;
  90
  91         r = sd_bus_open_system(&bus);
  92         assert_se(r >= 0);
  93
  94         print_inhibitors(bus);
  95
  96         fd1 = inhibit(bus, "sleep");
  97         assert_se(fd1 >= 0);
  98         print_inhibitors(bus);
  99
 100         fd2 = inhibit(bus, "idle:shutdown");
 101         assert_se(fd2 >= 0);
 102         print_inhibitors(bus);
 103
 104         safe_close(fd1);
 105         sleep(1);
 106         print_inhibitors(bus);
 107
 108         safe_close(fd2);
 109         sleep(1);
 110         print_inhibitors(bus);
 111
 112         return 0;
 113 }