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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 | } |