/* Checking macros for fcntl functions.

   Copyright (C) 2007-2018 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/>.  */

#ifndef	_FCNTL_H

# error "Never include <bits/fcntl2.h> directly; use <fcntl.h> instead."

#endif

/* Check that calls to open and openat with O_CREAT or O_TMPFILE set have an

   appropriate third/fourth parameter.  */

#ifndef __USE_FILE_OFFSET64

extern int __open_2 (const char *__path, int __oflag) __nonnull ((1));

extern int __REDIRECT (__open_alias, (const char *__path, int __oflag, ...),

		       open) __nonnull ((1));

#else

extern int __REDIRECT (__open_2, (const char *__path, int __oflag),

		       __open64_2) __nonnull ((1));

extern int __REDIRECT (__open_alias, (const char *__path, int __oflag, ...),

		       open64) __nonnull ((1));

#endif

__errordecl (__open_too_many_args,

	     "open can be called either with 2 or 3 arguments, not more");

__errordecl (__open_missing_mode,

	     "open with O_CREAT or O_TMPFILE in second argument needs 3 arguments");

__fortify_function int

open (const char *__path, int __oflag, ...)

{

  if (__va_arg_pack_len () > 1)

    __open_too_many_args ();

  if (__builtin_constant_p (__oflag))

    {

      if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1)

	{

	  __open_missing_mode ();

	  return __open_2 (__path, __oflag);

	}

      return __open_alias (__path, __oflag, __va_arg_pack ());

    }

  if (__va_arg_pack_len () < 1)

    return __open_2 (__path, __oflag);

  return __open_alias (__path, __oflag, __va_arg_pack ());

}

#ifdef __USE_LARGEFILE64

extern int __open64_2 (const char *__path, int __oflag) __nonnull ((1));

extern int __REDIRECT (__open64_alias, (const char *__path, int __oflag,

					...), open64) __nonnull ((1));

__errordecl (__open64_too_many_args,

	     "open64 can be called either with 2 or 3 arguments, not more");

__errordecl (__open64_missing_mode,

	     "open64 with O_CREAT or O_TMPFILE in second argument needs 3 arguments");

__fortify_function int

open64 (const char *__path, int __oflag, ...)

{

  if (__va_arg_pack_len () > 1)

    __open64_too_many_args ();

  if (__builtin_constant_p (__oflag))

    {

      if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1)

	{

	  __open64_missing_mode ();

	  return __open64_2 (__path, __oflag);

	}

      return __open64_alias (__path, __oflag, __va_arg_pack ());

    }

  if (__va_arg_pack_len () < 1)

    return __open64_2 (__path, __oflag);

  return __open64_alias (__path, __oflag, __va_arg_pack ());

}

#endif

#ifdef __USE_ATFILE

# ifndef __USE_FILE_OFFSET64

extern int __openat_2 (int __fd, const char *__path, int __oflag)

     __nonnull ((2));

extern int __REDIRECT (__openat_alias, (int __fd, const char *__path,

					int __oflag, ...), openat)

     __nonnull ((2));

# else

extern int __REDIRECT (__openat_2, (int __fd, const char *__path,

				    int __oflag), __openat64_2)

     __nonnull ((2));

extern int __REDIRECT (__openat_alias, (int __fd, const char *__path,

					int __oflag, ...), openat64)

     __nonnull ((2));

# endif

__errordecl (__openat_too_many_args,

	     "openat can be called either with 3 or 4 arguments, not more");

__errordecl (__openat_missing_mode,

	     "openat with O_CREAT or O_TMPFILE in third argument needs 4 arguments");

__fortify_function int

openat (int __fd, const char *__path, int __oflag, ...)

{

  if (__va_arg_pack_len () > 1)

    __openat_too_many_args ();

  if (__builtin_constant_p (__oflag))

    {

      if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1)

	{

	  __openat_missing_mode ();

	  return __openat_2 (__fd, __path, __oflag);

	}

      return __openat_alias (__fd, __path, __oflag, __va_arg_pack ());

    }

  if (__va_arg_pack_len () < 1)

    return __openat_2 (__fd, __path, __oflag);

  return __openat_alias (__fd, __path, __oflag, __va_arg_pack ());

}

# ifdef __USE_LARGEFILE64

extern int __openat64_2 (int __fd, const char *__path, int __oflag)

     __nonnull ((2));

extern int __REDIRECT (__openat64_alias, (int __fd, const char *__path,

					  int __oflag, ...), openat64)

     __nonnull ((2));

__errordecl (__openat64_too_many_args,

	     "openat64 can be called either with 3 or 4 arguments, not more");

__errordecl (__openat64_missing_mode,

	     "openat64 with O_CREAT or O_TMPFILE in third argument needs 4 arguments");

__fortify_function int

openat64 (int __fd, const char *__path, int __oflag, ...)

{

  if (__va_arg_pack_len () > 1)

    __openat64_too_many_args ();

  if (__builtin_constant_p (__oflag))

    {

      if (__OPEN_NEEDS_MODE (__oflag) && __va_arg_pack_len () < 1)

	{

	  __openat64_missing_mode ();

	  return __openat64_2 (__fd, __path, __oflag);

	}

      return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ());

    }

  if (__va_arg_pack_len () < 1)

    return __openat64_2 (__fd, __path, __oflag);

  return __openat64_alias (__fd, __path, __oflag, __va_arg_pack ());

}

# endif

#endif