/*-*- 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; }