1 /* An interface to read() that retries after interrupts.
2 Copyright (C) 2002, 2006, 2009-2010 Free Software Foundation, Inc.
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.
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.
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/>. */
17 #include <stddef.h>
19 #ifdef __cplusplus
20 extern "C" {
21 #endif
24 #define SAFE_READ_ERROR ((size_t) -1)
26 /* Read up to COUNT bytes at BUF from descriptor FD, retrying if interrupted.
27 Return the actual number of bytes read, zero for EOF, or SAFE_READ_ERROR
28 upon error. */
29 extern size_t safe_read (int fd, void *buf, size_t count);
32 #ifdef __cplusplus
33 }
34 #endif