/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2012 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <unistd.h> #include "sd-bus.h" #include "bus-util.h" #include "fd-util.h" #include "macro.h" #include "util.h" static int inhibit(sd_bus *bus, const char *what) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; const char *who = "Test Tool", *reason = "Just because!", *mode = "block"; int fd; int r; r = sd_bus_call_method(bus, "org.freedesktop.login1", "/org/freedesktop/login1", "org.freedesktop.login1.Manager", "Inhibit", &error, &reply, "ssss", what, who, reason, mode); assert_se(r >= 0); r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd); assert_se(r >= 0); assert_se(fd >= 0); return dup(fd); } static void print_inhibitors(sd_bus *bus) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; const char *what, *who, *why, *mode; uint32_t uid, pid; unsigned n = 0; int r; r = sd_bus_call_method(bus, "org.freedesktop.login1", "/org/freedesktop/login1", "org.freedesktop.login1.Manager", "ListInhibitors", &error, &reply, ""); assert_se(r >= 0); r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)"); assert_se(r >= 0); while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) { printf("what=<%s> who=<%s> why=<%s> mode=<%s> uid=<%"PRIu32"> pid=<%"PRIu32">\n", what, who, why, mode, uid, pid); n++; } assert_se(r >= 0); printf("%u inhibitors\n", n); } int main(int argc, char*argv[]) { _cleanup_bus_unref_ sd_bus *bus = NULL; int fd1, fd2; int r; r = sd_bus_open_system(&bus); assert_se(r >= 0); print_inhibitors(bus); fd1 = inhibit(bus, "sleep"); assert_se(fd1 >= 0); print_inhibitors(bus); fd2 = inhibit(bus, "idle:shutdown"); assert_se(fd2 >= 0); print_inhibitors(bus); safe_close(fd1); sleep(1); print_inhibitors(bus); safe_close(fd2); sleep(1); print_inhibitors(bus); return 0; }