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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Tom Gundersen <teg@jklm.no>
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 "sd-event.h"
#include "sd-daemon.h"
#include "sd-network.h"
#include "util.h"
static bool all_configured(void) {
_cleanup_free_ unsigned *indices = NULL;
bool one_ready = false;
int r, n, i;
n = sd_network_get_ifindices(&indices);
if (n <= 0)
return false;
for (i = 0; i < n; i++) {
_cleanup_free_ char *state = NULL;
r = sd_network_get_link_state(indices[i], &state);
if (r == -EUNATCH)
continue;
if (r < 0 || !streq(state, "configured"))
return false;
one_ready = true;
}
return one_ready;
}
static int event_handler(sd_event_source *s, int fd, uint32_t revents,
void *userdata) {
sd_event *event = userdata;
assert(event);
if (all_configured())
sd_event_exit(event, 0);
return 1;
}
int main(int argc, char *argv[]) {
sd_event *event;
sd_event_source *event_source;
sd_network_monitor *monitor;
int r, fd, events;
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
umask(0022);
if (argc != 1) {
log_error("This program takes no arguments.");
r = -EINVAL;
goto out;
}
r = sd_network_monitor_new(NULL, &monitor);
if (r < 0) {
log_error("Could not create monitor: %s", strerror(-r));
goto out;
}
r = sd_event_new(&event);
if (r < 0) {
log_error("Could not create event: %s", strerror(-r));
goto out;
}
fd = sd_network_monitor_get_fd(monitor);
if (fd < 0) {
log_error("Could not get monitor fd: %s", strerror(-r));
goto out;
}
events = sd_network_monitor_get_events(monitor);
if (events < 0) {
log_error("Could not get monitor events: %s", strerror(-r));
goto out;
}
r = sd_event_add_io(event, &event_source, fd, events, &event_handler,
event);
if (r < 0) {
log_error("Could not add io event source: %s", strerror(-r));
goto out;
}
if (all_configured()) {
r = 0;
goto out;
}
sd_notify(false,
"READY=1\n"
"STATUS=Waiting for network connecitons...");
r = sd_event_loop(event);
if (r < 0) {
log_error("Event loop failed: %s", strerror(-r));
goto out;
}
out:
sd_notify(false,
"STATUS=All interfaces configured...");
sd_event_source_unref(event_source);
sd_event_unref(event);
sd_network_monitor_unref(monitor);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
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