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/* POSIX-specific extra functions.
Copyright (C) 2016-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
/* These wrapper functions use POSIX types and therefore cannot be
declared in <support/support.h>. */
#ifndef SUPPORT_XUNISTD_H
#define SUPPORT_XUNISTD_H
#include <sys/cdefs.h>
#include <sys/types.h>
#include <unistd.h>
__BEGIN_DECLS
struct stat64;
pid_t xfork (void);
pid_t xwaitpid (pid_t, int *status, int flags);
void xpipe (int[2]);
void xdup2 (int, int);
int xopen (const char *path, int flags, mode_t);
void xstat (const char *path, struct stat64 *);
void xfstat (int fd, struct stat64 *);
void xmkdir (const char *path, mode_t);
void xchroot (const char *path);
void xunlink (const char *path);
long xsysconf (int name);
long long xlseek (int fd, long long offset, int whence);
void xftruncate (int fd, long long length);
/* Read the link at PATH. The caller should free the returned string
with free. */
char *xreadlink (const char *path);
/* Close the file descriptor. Ignore EINTR errors, but terminate the
process on other errors. */
void xclose (int);
/* Write the buffer. Retry on short writes. */
void xwrite (int, const void *, size_t);
/* Invoke mmap with a zero file offset. */
void *xmmap (void *addr, size_t length, int prot, int flags, int fd);
void xmprotect (void *addr, size_t length, int prot);
void xmunmap (void *addr, size_t length);
__END_DECLS
#endif /* SUPPORT_XUNISTD_H */
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