safe-read.h
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safe-read.h
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	/* An interface to read() that retries after interrupts.
	Copyright (C) 2002, 2006, 2009-2011 Free Software Foundation, Inc.

	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 3 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, see <http://www.gnu.org/licenses/>. */

	#include <stddef.h>

	#ifdef __cplusplus
	extern "C" {
	#endif


	#define SAFE_READ_ERROR ((size_t) -1)

	/* Read up to COUNT bytes at BUF from descriptor FD, retrying if interrupted.
	Return the actual number of bytes read, zero for EOF, or SAFE_READ_ERROR
	upon error. */
	extern size_t safe_read (int fd, void *buf, size_t count);


	#ifdef __cplusplus
	}
	#endif