src/rfkill/rfkill.c

	rfkill.c revision 3990f247652c3bd41e4ea074e6302277eb9c7aa3
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering/***
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  This file is part of systemd.
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  Copyright 2013 Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  systemd is free software; you can redistribute it and/or modify it
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  under the terms of the GNU Lesser General Public License as published by
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  the Free Software Foundation; either version 2.1 of the License, or
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  (at your option) any later version.
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  systemd is distributed in the hope that it will be useful, but
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  Lesser General Public License for more details.
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  You should have received a copy of the GNU Lesser General Public License
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering***/
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering#include "util.h"
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering#include "mkdir.h"
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering#include "fileio.h"
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering#include "libudev.h"
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering#include "udev-util.h"
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poetteringint main(int argc, char *argv[]) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        _cleanup_udev_unref_ struct udev *udev = NULL;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        _cleanup_udev_device_unref_ struct udev_device *device = NULL;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        _cleanup_free_ char *saved = NULL, *ss = NULL, *escaped_name = NULL;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        const char *sysname, *name;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        int r;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (argc != 3) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_error("This program requires two arguments.");
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        log_set_target(LOG_TARGET_AUTO);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        log_parse_environment();
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        log_open();
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        umask(0022);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        r = mkdir_p("/var/lib/systemd/rfkill", 0755);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (r < 0) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_error("Failed to create rfkill directory: %s", strerror(-r));
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        udev = udev_new();
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (!udev) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_oom();
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        sysname = strchr(argv[2], ':');
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (!sysname) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_error("Requires pair of subsystem and sysname for specifying rfkill device.");
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        ss = strndup(argv[2], sysname - argv[2]);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (!ss) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_oom();
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        sysname++;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (!streq(ss, "rfkill")) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_error("Not a rfkill device: '%s:%s'", ss, sysname);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        errno = 0;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        device = udev_device_new_from_subsystem_sysname(udev, ss, sysname);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (!device) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                if (errno != 0)
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        log_error("Failed to get rfkill device '%s:%s': %m", ss, sysname);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                else
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        log_oom();
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        name = udev_device_get_sysattr_value(device, "name");
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (!name) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_error("rfkill device has no name?");
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        escaped_name = cescape(name);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (!escaped_name) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_oom();
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        saved = strjoin("/var/lib/systemd/rfkill/", escaped_name, NULL);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (!saved) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_oom();
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        if (streq(argv[1], "load")) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                _cleanup_free_ char *value = NULL;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                r = read_one_line_file(saved, &value);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                if (r < 0) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        if (r == -ENOENT)
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                                return EXIT_SUCCESS;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        log_error("Failed to read %s: %s", saved, strerror(-r));
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                r = udev_device_set_sysattr_value(device, "soft", value);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                if (r < 0) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        log_error("Failed to write system attribute: %s", strerror(-r));
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        } else if (streq(argv[1], "save")) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                const char *value;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                value = udev_device_get_sysattr_value(device, "soft");
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                if (!value) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        log_error("Failed to read system attribute: %s", strerror(-r));
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                r = write_string_file(saved, value);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                if (r < 0) {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        log_error("Failed to write %s: %s", saved, strerror(-r));
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                        return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        } else {
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                log_error("Unknown verb %s.", argv[1]);
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering                return EXIT_FAILURE;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        }
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering        return EXIT_SUCCESS;
3990f247652c3bd41e4ea074e6302277eb9c7aa3Lennart Poettering}