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1/* An interface to write() that retries after interrupts.
2 Copyright (C) 2002 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 2, or (at your option)
7 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, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
17
18#include <stddef.h>
19
20#define SAFE_WRITE_ERROR ((size_t) -1)
21
22/* Write up to COUNT bytes at BUF to descriptor FD, retrying if interrupted.
23 Return the actual number of bytes written, zero for EOF, or SAFE_WRITE_ERROR
24 upon error. */
25extern size_t safe_write (int fd, const void *buf, size_t count);