1/* An interface to write() that retries after interrupts.
2   Copyright (C) 2002, 2009-2010 Free Software Foundation, Inc.
3
4   This program is free software: you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 3 of the License, or
7   (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
16
17#include <stddef.h>
18
19#define SAFE_WRITE_ERROR ((size_t) -1)
20
21/* Write up to COUNT bytes at BUF to descriptor FD, retrying if interrupted.
22   Return the actual number of bytes written, zero for EOF, or SAFE_WRITE_ERROR
23   upon error.  */
24extern size_t safe_write (int fd, const void *buf, size_t count);
25