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/***
This file is part of systemd.
Copyright 2010 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 <stdlib.h>
#include <sys/socket.h>
#include "fd-util.h"
#include "log.h"
#include "socket-util.h"
int main(int argc, char *argv[]) {
static const union sockaddr_union sa = {
.un.sun_family = AF_UNIX,
.un.sun_path = "/run/systemd/cgroups-agent",
};
_cleanup_close_ int fd = -1;
ssize_t n;
size_t l;
if (argc != 2) {
log_error("Incorrect number of arguments.");
return EXIT_FAILURE;
}
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
if (fd < 0) {
log_debug_errno(errno, "Failed to allocate socket: %m");
return EXIT_FAILURE;
}
l = strlen(argv[1]);
n = sendto(fd, argv[1], l, 0, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
if (n < 0) {
log_debug_errno(errno, "Failed to send cgroups agent message: %m");
return EXIT_FAILURE;
}
if ((size_t) n != l) {
log_debug("Datagram size mismatch");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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