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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));
- 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 in second argument needs 3 arguments");
-
- __extern_always_inline int
- open (__const char *__path, int __oflag, ...)
- {
- if (__va_arg_pack_len () > 1)
- __open_too_many_args ();
-
- if (__builtin_constant_p (__oflag))
- {
- if ((__oflag & O_CREAT) != 0 && __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 in second argument needs 3 arguments");
-
- __extern_always_inline int
- open64 (__const char *__path, int __oflag, ...)
- {
- if (__va_arg_pack_len () > 1)
- __open64_too_many_args ();
-
- if (__builtin_constant_p (__oflag))
- {
- if ((__oflag & O_CREAT) != 0 && __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 in third argument needs 4 arguments");
-
- __extern_always_inline 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 ((__oflag & O_CREAT) != 0 && __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 in third argument needs 4 arguments");
-
- __extern_always_inline 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 ((__oflag & O_CREAT) != 0 && __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
-