/usr/include/iv_fd_pump.h is in libivykis-dev 0.42.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | /*
 * ivykis, an event handling library
 * Copyright (C) 2011 Lennert Buytenhek
 * Dedicated to Marija Kulikova.
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version
 * 2.1 as published by the Free Software Foundation.
 *
 * This library 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 version 2.1 for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License version 2.1 along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */
#ifndef __IV_FD_PUMP_H
#define __IV_FD_PUMP_H
#ifdef __cplusplus
extern "C" {
#endif
struct iv_fd_pump {
	int		from_fd;
	int		to_fd;
	void		*cookie;
	void		(*set_bands)(void *cookie, int pollin, int pollout);
	unsigned int	flags;
	void		*buf;
	int		bytes;
	int		full;
	int		saw_fin;
};
static inline void IV_FD_PUMP_INIT(struct iv_fd_pump *this)
{
}
#define IV_FD_PUMP_FLAG_RELAY_EOF	1
void iv_fd_pump_init(struct iv_fd_pump *ip);
void iv_fd_pump_destroy(struct iv_fd_pump *ip);
int iv_fd_pump_pump(struct iv_fd_pump *ip);
int iv_fd_pump_is_done(const struct iv_fd_pump *ip);
#ifdef __cplusplus
}
#endif
#endif
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