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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2012 Intel Corporation. All rights reserved.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <stddef.h>
#include <sys/socket.h>
#include <sys/un.h>
#include "systemd.h"
int sd_listen_fds(int unset_environment)
{
return 0;
}
int sd_notify(int unset_environment, const char *state)
{
const char *sock;
struct sockaddr_un addr;
struct msghdr msghdr;
struct iovec iovec;
int fd, err;
if (!state) {
err = -EINVAL;
goto done;
}
sock = getenv("NOTIFY_SOCKET");
if (!sock)
return 0;
/* check for abstract socket or absolute path */
if (sock[0] != '@' && sock[0] != '/') {
err = -EINVAL;
goto done;
}
fd = socket(AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0);
if (fd < 0) {
err = -errno;
goto done;
}
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, sock, sizeof(addr.sun_path));
if (addr.sun_path[0] == '@')
addr.sun_path[0] = '\0';
memset(&iovec, 0, sizeof(iovec));
iovec.iov_base = (char *) state;
iovec.iov_len = strlen(state);
memset(&msghdr, 0, sizeof(msghdr));
msghdr.msg_name = &addr;
msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) +
strlen(sock);
if (msghdr.msg_namelen > sizeof(struct sockaddr_un))
msghdr.msg_namelen = sizeof(struct sockaddr_un);
msghdr.msg_iov = &iovec;
msghdr.msg_iovlen = 1;
if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0)
err = -errno;
else
err = 1;
close(fd);
done:
if (unset_environment)
unsetenv("NOTIFY_SOCKET");
return err;
}
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