src/login/test-inhibit.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2012 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <unistd.h>
  21
  22 #include "sd-bus.h"
  23
  24 #include "bus-util.h"
  25 #include "fd-util.h"
  26 #include "macro.h"
  27 #include "util.h"
  28
  29 static int inhibit(sd_bus *bus, const char *what) {
  30         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  31         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  32         const char *who = "Test Tool", *reason = "Just because!", *mode = "block";
  33         int fd;
  34         int r;
  35
  36         r = sd_bus_call_method(bus,
  37                         "org.freedesktop.login1",
  38                         "/org/freedesktop/login1",
  39                         "org.freedesktop.login1.Manager",
  40                         "Inhibit",
  41                         &error,
  42                         &reply,
  43                         "ssss", what, who, reason, mode);
  44         assert_se(r >= 0);
  45
  46         r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
  47         assert_se(r >= 0);
  48         assert_se(fd >= 0);
  49
  50         return dup(fd);
  51 }
  52
  53 static void print_inhibitors(sd_bus *bus) {
  54         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  55         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  56         const char *what, *who, *why, *mode;
  57         uint32_t uid, pid;
  58         unsigned n = 0;
  59         int r;
  60
  61         r = sd_bus_call_method(bus,
  62                         "org.freedesktop.login1",
  63                         "/org/freedesktop/login1",
  64                         "org.freedesktop.login1.Manager",
  65                         "ListInhibitors",
  66                         &error,
  67                         &reply,
  68                         "");
  69         assert_se(r >= 0);
  70
  71         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
  72         assert_se(r >= 0);
  73
  74         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
  75                 printf("what=<%s> who=<%s> why=<%s> mode=<%s> uid=<%"PRIu32"> pid=<%"PRIu32">\n",
  76                        what, who, why, mode, uid, pid);
  77
  78                 n++;
  79         }
  80         assert_se(r >= 0);
  81
  82         printf("%u inhibitors\n", n);
  83 }
  84
  85 int main(int argc, char*argv[]) {
  86         _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
  87         int fd1, fd2;
  88         int r;
  89
  90         r = sd_bus_open_system(&bus);
  91         assert_se(r >= 0);
  92
  93         print_inhibitors(bus);
  94
  95         fd1 = inhibit(bus, "sleep");
  96         assert_se(fd1 >= 0);
  97         print_inhibitors(bus);
  98
  99         fd2 = inhibit(bus, "idle:shutdown");
 100         assert_se(fd2 >= 0);
 101         print_inhibitors(bus);
 102
 103         safe_close(fd1);
 104         sleep(1);
 105         print_inhibitors(bus);
 106
 107         safe_close(fd2);
 108         sleep(1);
 109         print_inhibitors(bus);
 110
 111         return 0;
 112 }