src/login/test-inhibit.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   Copyright 2012 Lennart Poettering
   4 ***/
   5
   6 #include <unistd.h>
   7
   8 #include "sd-bus.h"
   9
  10 #include "bus-util.h"
  11 #include "fd-util.h"
  12 #include "macro.h"
  13 #include "util.h"
  14
  15 static int inhibit(sd_bus *bus, const char *what) {
  16         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  17         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  18         const char *who = "Test Tool", *reason = "Just because!", *mode = "block";
  19         int fd;
  20         int r;
  21
  22         r = sd_bus_call_method(bus,
  23                         "org.freedesktop.login1",
  24                         "/org/freedesktop/login1",
  25                         "org.freedesktop.login1.Manager",
  26                         "Inhibit",
  27                         &error,
  28                         &reply,
  29                         "ssss", what, who, reason, mode);
  30         assert_se(r >= 0);
  31
  32         r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
  33         assert_se(r >= 0);
  34         assert_se(fd >= 0);
  35
  36         return dup(fd);
  37 }
  38
  39 static void print_inhibitors(sd_bus *bus) {
  40         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  41         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
  42         const char *what, *who, *why, *mode;
  43         uint32_t uid, pid;
  44         unsigned n = 0;
  45         int r;
  46
  47         r = sd_bus_call_method(bus,
  48                         "org.freedesktop.login1",
  49                         "/org/freedesktop/login1",
  50                         "org.freedesktop.login1.Manager",
  51                         "ListInhibitors",
  52                         &error,
  53                         &reply,
  54                         "");
  55         assert_se(r >= 0);
  56
  57         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
  58         assert_se(r >= 0);
  59
  60         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
  61                 printf("what=<%s> who=<%s> why=<%s> mode=<%s> uid=<%"PRIu32"> pid=<%"PRIu32">\n",
  62                        what, who, why, mode, uid, pid);
  63
  64                 n++;
  65         }
  66         assert_se(r >= 0);
  67
  68         printf("%u inhibitors\n", n);
  69 }
  70
  71 int main(int argc, char*argv[]) {
  72         _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
  73         int fd1, fd2;
  74         int r;
  75
  76         r = sd_bus_open_system(&bus);
  77         assert_se(r >= 0);
  78
  79         print_inhibitors(bus);
  80
  81         fd1 = inhibit(bus, "sleep");
  82         assert_se(fd1 >= 0);
  83         print_inhibitors(bus);
  84
  85         fd2 = inhibit(bus, "idle:shutdown");
  86         assert_se(fd2 >= 0);
  87         print_inhibitors(bus);
  88
  89         safe_close(fd1);
  90         sleep(1);
  91         print_inhibitors(bus);
  92
  93         safe_close(fd2);
  94         sleep(1);
  95         print_inhibitors(bus);
  96
  97         return 0;
  98 }