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/* Checking macros for fcntl functions.
Copyright (C) 2007 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#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 set have an
appropriate third/fourth parameter. */
#ifndef __USE_FILE_OFFSET64
extern int __open_2 (__const char *__path, int __oflag) __nonnull ((1));
#else
extern int __REDIRECT (__open_2, (__const char *__file, int __oflag),
__open64_2) __nonnull ((1));
#endif
#define open(fname, flags, ...) \
(__extension__ \
({ int ___r; \
/* If the compiler complains about an invalid type, excess elements, \
etc. in the initialization this means a parameter of the wrong type \
has been passed to open. */ \
int ___arr[] = { __VA_ARGS__ }; \
if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \
{ \
/* If the compiler complains about the size of this array type the \
mode parameter is missing since O_CREAT has been used. */ \
typedef int __open_missing_mode[((flags) & O_CREAT) != 0 \
? ((long int) sizeof (___arr) \
- (long int) sizeof (int)) : 1];\
} \
if (sizeof (___arr) == 0) \
{ \
if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \
___r = open (fname, flags); \
else \
___r = __open_2 (fname, flags); \
} \
else \
{ \
/* If the compiler complains about the size of this array type too \
many parameters have been passed to open. */ \
typedef int __open_too_many_args[-(sizeof (___arr) \
> sizeof (int))]; \
___r = open (fname, flags, ___arr[0]); \
} \
___r; \
}))
#ifdef __USE_LARGEFILE64
extern int __open64_2 (__const char *__path, int __oflag) __nonnull ((1));
# define open64(fname, flags, ...) \
(__extension__ \
({ int ___r; \
/* If the compiler complains about an invalid type, excess elements, \
etc. in the initialization this means a parameter of the wrong type \
has been passed to open64. */ \
int ___arr[] = { __VA_ARGS__ }; \
if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \
{ \
/* If the compiler complains about the size of this array type the \
mode parameter is missing since O_CREAT has been used. */ \
typedef int __open_missing_mode[((flags) & O_CREAT) != 0 \
? ((long int) sizeof (___arr) \
- (long int) sizeof (int)) : 1];\
} \
if (sizeof (___arr) == 0) \
{ \
if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \
___r = open64 (fname, flags); \
else \
___r = __open64_2 (fname, flags); \
} \
else \
{ \
/* If the compiler complains about the size of this array type too \
many parameters have been passed to open64. */ \
typedef int __open_too_many_args[-(sizeof (___arr) \
> sizeof (int))]; \
___r = open64 (fname, flags, ___arr[0]); \
} \
___r; \
}))
#endif
#ifdef __USE_ATFILE
# ifndef __USE_FILE_OFFSET64
extern int __openat_2 (int __fd, __const char *__path, int __oflag)
__nonnull ((2));
# else
extern int __REDIRECT (__openat_2, (int __fd, __const char *__file,
int __oflag), __openat64_2)
__nonnull ((2));
# endif
# define openat(fd, fname, flags, ...) \
(__extension__ \
({ int ___r; \
/* If the compiler complains about an invalid type, excess elements, \
etc. in the initialization this means a parameter of the wrong type \
has been passed to openat. */ \
int ___arr[] = { __VA_ARGS__ }; \
if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \
{ \
/* If the compiler complains about the size of this array type the \
mode parameter is missing since O_CREAT has been used. */ \
typedef int __open_missing_mode[((flags) & O_CREAT) != 0 \
? ((long int) sizeof (___arr) \
- (long int) sizeof (int)) : 1];\
} \
if (sizeof (___arr) == 0) \
{ \
if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \
___r = openat (fd, fname, flags); \
else \
___r = __openat_2 (fd, fname, flags); \
} \
else \
{ \
/* If the compiler complains about the size of this array type too \
many parameters have been passed to openat. */ \
typedef int __open_too_many_args[-(sizeof (___arr) \
> sizeof (int))]; \
___r = openat (fd, fname, flags, ___arr[0]); \
} \
___r; \
}))
# ifdef __USE_LARGEFILE64
extern int __openat64_2 (int __fd, __const char *__path, int __oflag)
__nonnull ((2));
# define openat64(fd, fname, flags, ...) \
(__extension__ \
({ int ___r; \
/* If the compiler complains about an invalid type, excess elements, \
etc. in the initialization this means a parameter of the wrong type \
has been passed to openat64. */ \
int ___arr[] = { __VA_ARGS__ }; \
if (__builtin_constant_p (flags) && ((flags) & O_CREAT) != 0) \
{ \
/* If the compiler complains about the size of this array type the \
mode parameter is missing since O_CREAT has been used. */ \
typedef int __open_missing_mode[((flags) & O_CREAT) != 0 \
? ((long int) sizeof (___arr) \
- (long int) sizeof (int)) : 1];\
} \
if (sizeof (___arr) == 0) \
{ \
if (__builtin_constant_p (flags) && ((flags) & O_CREAT) == 0) \
___r = openat64 (fd, fname, flags); \
else \
___r = __openat64_2 (fd, fname, flags); \
} \
else \
{ \
/* If the compiler complains about the size of this array type too \
many parameters have been passed to openat64. */ \
typedef int __open_too_many_args[-(sizeof (___arr) \
> sizeof (int))]; \
___r = openat64 (fd, fname, flags, ___arr[0]); \
} \
___r; \
}))
# endif
#endif
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