/* Checking macros for fcntl functions.

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Copyright (C) 2007-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _FCNTL_H

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

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#endif

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

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appropriate third/fourth parameter. */

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#ifndef __USE_FILE_OFFSET64

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

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

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open) __nonnull ((1));

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#else

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

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__open64_2) __nonnull ((1));

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

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open64) __nonnull ((1));

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#endif

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__errordecl (__open_too_many_args,

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

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__errordecl (__open_missing_mode,

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

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__fortify_function int

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

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{

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if (__va_arg_pack_len () > 1)

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__open_too_many_args ();

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if (__builtin_constant_p (__oflag))

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{

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

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{

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__open_missing_mode ();

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return __open_2 (__path, __oflag);

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}

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

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}

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if (__va_arg_pack_len () < 1)

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return __open_2 (__path, __oflag);

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

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}

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#ifdef __USE_LARGEFILE64

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

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

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

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__errordecl (__open64_too_many_args,

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

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__errordecl (__open64_missing_mode,

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

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__fortify_function int

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

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{

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if (__va_arg_pack_len () > 1)

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__open64_too_many_args ();

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if (__builtin_constant_p (__oflag))

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{

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

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{

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__open64_missing_mode ();

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return __open64_2 (__path, __oflag);

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}

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

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}

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if (__va_arg_pack_len () < 1)

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return __open64_2 (__path, __oflag);

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

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}

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#endif

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#ifdef __USE_ATFILE

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# ifndef __USE_FILE_OFFSET64

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

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__nonnull ((2));

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

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int __oflag, ...), openat)

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__nonnull ((2));

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# else

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

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int __oflag), __openat64_2)

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__nonnull ((2));

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

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int __oflag, ...), openat64)

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__nonnull ((2));

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# endif

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__errordecl (__openat_too_many_args,

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

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__errordecl (__openat_missing_mode,

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

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__fortify_function int

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

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{

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if (__va_arg_pack_len () > 1)

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__openat_too_many_args ();

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if (__builtin_constant_p (__oflag))

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{

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

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{

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__openat_missing_mode ();

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return __openat_2 (__fd, __path, __oflag);

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}

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

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}

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if (__va_arg_pack_len () < 1)

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return __openat_2 (__fd, __path, __oflag);

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

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}

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# ifdef __USE_LARGEFILE64

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

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__nonnull ((2));

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

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int __oflag, ...), openat64)

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__nonnull ((2));

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__errordecl (__openat64_too_many_args,

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

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__errordecl (__openat64_missing_mode,

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

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__fortify_function int

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

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{

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if (__va_arg_pack_len () > 1)

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__openat64_too_many_args ();

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if (__builtin_constant_p (__oflag))

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{

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

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{

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__openat64_missing_mode ();

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return __openat64_2 (__fd, __path, __oflag);

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}

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

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}

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if (__va_arg_pack_len () < 1)

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return __openat64_2 (__fd, __path, __oflag);

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

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}

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# endif

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#endif

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