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mqueue2.h
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/* Checking macros for mq 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/mqueue2.h> directly; use <mqueue.h> instead." #endif /* Check that calls to mq_open with O_CREAT set have an appropriate third and fourth parameter. */ extern mqd_t mq_open (const char *__name, int __oflag, ...) __THROW __nonnull ((1)); extern mqd_t __mq_open_2 (const char *__name, int __oflag) __THROW __nonnull ((1)); extern mqd_t __REDIRECT_NTH (__mq_open_alias, (const char *__name, int __oflag, ...), mq_open) __nonnull ((1)); __errordecl (__mq_open_wrong_number_of_args, "mq_open can be called either with 2 or 4 arguments"); __errordecl (__mq_open_missing_mode_and_attr, "mq_open with O_CREAT in second argument needs 4 arguments"); __fortify_function mqd_t __NTH (mq_open (const char *__name, int __oflag, ...)) { if (__va_arg_pack_len () != 0 && __va_arg_pack_len () != 2) __mq_open_wrong_number_of_args (); if (__builtin_constant_p (__oflag)) { if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () == 0) { __mq_open_missing_mode_and_attr (); return __mq_open_2 (__name, __oflag); } return __mq_open_alias (__name, __oflag, __va_arg_pack ()); } if (__va_arg_pack_len () == 0) return __mq_open_2 (__name, __oflag); return __mq_open_alias (__name, __oflag, __va_arg_pack ()); }