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
   8 #include <unistd.h>
   9
  10 #include "sd-bus.h"
  11
  12 #include "bus-util.h"
  13 #include "fd-util.h"
  14 #include "macro.h"
  15 #include "util.h"
  16
  17 static int inhibit(sd_bus *bus, const char *what) {
  18         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  19         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  20         const char *who = "Test Tool", *reason = "Just because!", *mode = "block";
  21         int fd;
  22         int r;
  23
  24         r = sd_bus_call_method(bus,
  25                         "org.freedesktop.login1",
  26                         "/org/freedesktop/login1",
  27                         "org.freedesktop.login1.Manager",
  28                         "Inhibit",
  29                         &error,
  30                         &reply,
  31                         "ssss", what, who, reason, mode);
  32         assert_se(r >= 0);
  33
  34         r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
  35         assert_se(r >= 0);
  36         assert_se(fd >= 0);
  37
  38         return dup(fd);
  39 }
  40
  41 static void print_inhibitors(sd_bus *bus) {
  42         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  43         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  44         const char *what, *who, *why, *mode;
  45         uint32_t uid, pid;
  46         unsigned n = 0;
  47         int r;
  48
  49         r = sd_bus_call_method(bus,
  50                         "org.freedesktop.login1",
  51                         "/org/freedesktop/login1",
  52                         "org.freedesktop.login1.Manager",
  53                         "ListInhibitors",
  54                         &error,
  55                         &reply,
  56                         "");
  57         assert_se(r >= 0);
  58
  59         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
  60         assert_se(r >= 0);
  61
  62         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
  63                 printf("what=<%s> who=<%s> why=<%s> mode=<%s> uid=<%"PRIu32"> pid=<%"PRIu32">\n",
  64                        what, who, why, mode, uid, pid);
  65
  66                 n++;
  67         }
  68         assert_se(r >= 0);
  69
  70         printf("%u inhibitors\n", n);
  71 }
  72
  73 int main(int argc, char*argv[]) {
  74         _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
  75         int fd1, fd2;
  76         int r;
  77
  78         r = sd_bus_open_system(&bus);
  79         assert_se(r >= 0);
  80
  81         print_inhibitors(bus);
  82
  83         fd1 = inhibit(bus, "sleep");
  84         assert_se(fd1 >= 0);
  85         print_inhibitors(bus);
  86
  87         fd2 = inhibit(bus, "idle:shutdown");
  88         assert_se(fd2 >= 0);
  89         print_inhibitors(bus);
  90
  91         safe_close(fd1);
  92         sleep(1);
  93         print_inhibitors(bus);
  94
  95         safe_close(fd2);
  96         sleep(1);
  97         print_inhibitors(bus);
  98
  99         return 0;
 100 }