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 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