src/login/test-inhibit.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 <unistd.h>
  23
  24 #include "macro.h"
  25 #include "util.h"
  26 #include "sd-bus.h"
  27 #include "bus-util.h"
  28 #include "bus-error.h"
  29
  30 static int inhibit(sd_bus *bus, const char *what) {
  31         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
  32         _cleanup_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(r >= 0);
  46
  47         r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
  48         assert(r >= 0);
  49         assert(fd >= 0);
  50
  51         return dup(fd);
  52 }
  53
  54 static void print_inhibitors(sd_bus *bus) {
  55         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
  56         _cleanup_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(r >= 0);
  71
  72         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
  73         assert(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=<%lu> pid=<%lu>\n",
  77                        what, who, why, mode, (unsigned long) uid, (unsigned long) pid);
  78
  79                 n++;
  80         }
  81         assert(r >= 0);
  82
  83         printf("%u inhibitors\n", n);
  84 }
  85
  86 int main(int argc, char*argv[]) {
  87         _cleanup_bus_unref_ sd_bus *bus = NULL;
  88         int fd1, fd2;
  89         int r;
  90
  91         r = sd_bus_open_system(&bus);
  92         assert(r >= 0);
  93
  94         print_inhibitors(bus);
  95
  96         fd1 = inhibit(bus, "sleep");
  97         assert(fd1 >= 0);
  98         print_inhibitors(bus);
  99
 100         fd2 = inhibit(bus, "idle:shutdown");
 101         assert(fd2 >= 0);
 102         print_inhibitors(bus);
 103
 104         close_nointr_nofail(fd1);
 105         sleep(1);
 106         print_inhibitors(bus);
 107
 108         close_nointr_nofail(fd2);
 109         sleep(1);
 110         print_inhibitors(bus);
 111
 112         return 0;
 113 }