/* POSIX-specific extra functions.

   Copyright (C) 2016-2018 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);

void xsymlink (const char *target, const char *linkpath);

/* Equivalent of "mkdir -p".  */

void xmkdirp (const char *, mode_t);

/* 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);

ssize_t xcopy_file_range(int fd_in, loff_t *off_in, int fd_out,

			 loff_t *off_out, size_t len, unsigned int flags);

__END_DECLS

#endif /* SUPPORT_XUNISTD_H */