1/* POSIX-specific extra functions.
2 Copyright (C) 2016-2017 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19/* These wrapper functions use POSIX types and therefore cannot be
20 declared in <support/support.h>. */
21
22#ifndef SUPPORT_XUNISTD_H
23#define SUPPORT_XUNISTD_H
24
25#include <unistd.h>
26#include <sys/cdefs.h>
27
28__BEGIN_DECLS
29
30pid_t xfork (void);
31pid_t xwaitpid (pid_t, int *status, int flags);
32
33/* Write the buffer. Retry on short writes. */
34void xwrite (int, const void *, size_t);
35
36/* Invoke mmap with a zero file offset. */
37void *xmmap (void *addr, size_t length, int prot, int flags, int fd);
38
39void xmunmap (void *addr, size_t length);
40
41__END_DECLS
42
43#endif /* SUPPORT_XUNISTD_H */
44