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/* Part of mate-screensaver.
*
* Copyright (c) 2019-2021 Paul Wolneykien <manowar@altlinux.org>
*
* 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.
*/
/* Provides functions for two-way communication between the screensaver
* and the helper program. The idea of helper program is to be able to
* run mate-screensaver-dialog without any setuid bits.
*/
#ifndef __HELPER_PROTO_H
#define __HELPER_PROTO_H
#include "config.h"
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#define HELPER_IO_ERR -1
#define HELPER_LENGTH_READ_ERR -2
#define HELPER_TOO_LONG_ERR -3
#define HELPER_MSG_READ_ERR -4
#define HELPER_TYPE_READ_ERR -5
ssize_t read_msg (int fd, char *buf, size_t length);
int read_prompt (int fd, char *buf, size_t *length);
#define HELPER_LENGTH_WRITE_ERR -6
#define HELPER_MSG_WRITE_ERR -7
#define HELPER_TYPE_WRITE_ERR -8
ssize_t write_msg (int fd, const void *buf, size_t length);
int write_prompt (int fd, int msg_type, const void *buf, size_t length);
#endif /* __HELPER_PROTO_H */
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