136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "sd-event.h"
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#include "event-util.h"
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#include "sd-daemon.h"
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#include "sd-network.h"
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#include "network-util.h"
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#include "util.h"
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static bool all_configured(void) {
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_cleanup_free_ unsigned *indices = NULL;
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bool one_ready = false;
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int r, n, i;
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n = sd_network_get_ifindices(&indices);
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if (n <= 0)
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return false;
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for (i = 0; i < n; i++) {
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_cleanup_free_ char *state = NULL;
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r = sd_network_get_link_state(indices[i], &state);
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if (r == -EUNATCH)
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continue;
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if (r < 0 || !streq(state, "configured"))
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return false;
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one_ready = true;
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}
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return one_ready;
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}
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static int event_handler(sd_event_source *s, int fd, uint32_t revents,
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void *userdata) {
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sd_event *event = userdata;
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assert(event);
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if (all_configured())
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sd_event_exit(event, 0);
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return 1;
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}
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int main(int argc, char *argv[]) {
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_cleanup_event_unref_ sd_event *event = NULL;
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_cleanup_event_source_unref_ sd_event_source *event_source = NULL;
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_cleanup_network_monitor_unref_ sd_network_monitor *monitor = NULL;
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int r, fd, events;
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log_set_target(LOG_TARGET_AUTO);
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log_parse_environment();
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log_open();
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umask(0022);
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if (argc != 1) {
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log_error("This program takes no arguments.");
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r = -EINVAL;
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goto out;
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}
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r = sd_network_monitor_new(NULL, &monitor);
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if (r < 0) {
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log_error("Could not create monitor: %s", strerror(-r));
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goto out;
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}
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r = sd_event_new(&event);
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if (r < 0) {
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log_error("Could not create event: %s", strerror(-r));
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goto out;
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}
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fd = sd_network_monitor_get_fd(monitor);
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if (fd < 0) {
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log_error("Could not get monitor fd: %s", strerror(-r));
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goto out;
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}
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events = sd_network_monitor_get_events(monitor);
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if (events < 0) {
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log_error("Could not get monitor events: %s", strerror(-r));
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goto out;
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}
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r = sd_event_add_io(event, &event_source, fd, events, &event_handler,
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event);
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if (r < 0) {
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log_error("Could not add io event source: %s", strerror(-r));
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goto out;
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}
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if (all_configured()) {
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r = 0;
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goto out;
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}
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sd_notify(false,
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"READY=1\n"
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"STATUS=Waiting for network connections...");
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r = sd_event_loop(event);
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if (r < 0) {
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log_error("Event loop failed: %s", strerror(-r));
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goto out;
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}
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out:
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sd_notify(false,
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"STATUS=All interfaces configured...");
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return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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