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| | /* SPDX-License-Identifier: LGPL-2.1-or-later */
/* Copied and adapted from systemd source code. */
#ifndef _SD_SOCKET_H
#define _SD_SOCKET_H 1
#include <inttypes.h>
#include <sys/types.h>
#include <sys/socket.h>
/*
The following functionality is provided:
- Support for logging with log levels on stderr
- File descriptor passing for socket-based activation
- Daemon startup and status notification
- Detection of systemd boots
See sd-daemon(3) for more information.
*/
/* The first passed file descriptor is fd 3 */
#define SD_LISTEN_FDS_START 3
/*
Helper call for identifying a passed file descriptor. Returns 1 if
the file descriptor is a socket of type (SOCK_DGRAM, SOCK_STREAM,
...), 0 otherwise. If type is 0 a socket type check will not be done
and the call only verifies if the file descriptor refers to a
socket. If listening is > 0 it is verified that the socket is in
listening mode. (i.e. listen() has been called) If listening is == 0
it is verified that the socket is not in listening mode. If
listening is < 0 no listening mode check is done. Returns a negative
errno style error code on failure.
See sd_is_socket(3) for more information.
*/
int sd_is_socket(int fd, int type, int listening);
/*
Tells systemd that daemon startup or daemon reload is finished (only
relevant for services of Type=notify).
See https://www.freedesktop.org/software/systemd/man/devel/sd_notify.html#Notes
for more information.
*/
int sd_notify_ready(void);
/*
Tells systemd that the daemon is about to go down.
See https://www.freedesktop.org/software/systemd/man/devel/sd_notify.html#Notes
for more information.
*/
int sd_notify_stopping(void);
#endif
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