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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 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 "util.h"
#include "mkdir.h"
#include "fileio.h"
#include "libudev.h"
#include "udev-util.h"
int main(int argc, char *argv[]) {
_cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_udev_device_unref_ struct udev_device *device = NULL;
_cleanup_free_ char *saved = NULL, *escaped_type = NULL, *escaped_path_id = NULL;
const char *name, *type, *path_id;
int r;
if (argc != 3) {
log_error("This program requires two arguments.");
return EXIT_FAILURE;
}
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
umask(0022);
r = mkdir_p("/var/lib/systemd/rfkill", 0755);
if (r < 0) {
log_error_errno(r, "Failed to create rfkill directory: %m");
return EXIT_FAILURE;
}
udev = udev_new();
if (!udev) {
log_oom();
return EXIT_FAILURE;
}
device = udev_device_new_from_subsystem_sysname(udev, "rfkill", argv[2]);
if (!device) {
log_debug_errno(errno, "Failed to get rfkill device '%s', ignoring: %m", argv[2]);
return EXIT_SUCCESS;
}
name = udev_device_get_sysattr_value(device, "name");
if (!name) {
log_error("rfkill device has no name? Ignoring device.");
return EXIT_SUCCESS;
}
log_debug("Operating on rfkill device '%s'.", name);
type = udev_device_get_sysattr_value(device, "type");
if (!type) {
log_error("rfkill device has no type? Ignoring device.");
return EXIT_SUCCESS;
}
escaped_type = cescape(type);
if (!escaped_type) {
log_oom();
return EXIT_FAILURE;
}
path_id = udev_device_get_property_value(device, "ID_PATH");
if (path_id) {
escaped_path_id = cescape(path_id);
if (!escaped_path_id) {
log_oom();
return EXIT_FAILURE;
}
saved = strjoin("/var/lib/systemd/rfkill/", escaped_path_id, ":", escaped_type, NULL);
} else
saved = strjoin("/var/lib/systemd/rfkill/", escaped_type, NULL);
if (!saved) {
log_oom();
return EXIT_FAILURE;
}
if (streq(argv[1], "load")) {
_cleanup_free_ char *value = NULL;
if (!shall_restore_state())
return EXIT_SUCCESS;
r = read_one_line_file(saved, &value);
if (r == -ENOENT)
return EXIT_SUCCESS;
if (r < 0) {
log_error_errno(r, "Failed to read %s: %m", saved);
return EXIT_FAILURE;
}
r = udev_device_set_sysattr_value(device, "soft", value);
if (r < 0) {
log_debug_errno(r, "Failed to write 'soft' attribute on rfkill device, ignoring: %m");
return EXIT_SUCCESS;
}
} else if (streq(argv[1], "save")) {
const char *value;
value = udev_device_get_sysattr_value(device, "soft");
if (!value) {
log_debug_errno(r, "Failed to read system attribute, ignoring device: %m");
return EXIT_SUCCESS;
}
r = write_string_file(saved, value);
if (r < 0) {
log_error_errno(r, "Failed to write %s: %m", saved);
return EXIT_FAILURE;
}
} else {
log_error("Unknown verb %s.", argv[1]);
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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