57 lines
2.1 KiB
C
57 lines
2.1 KiB
C
/* Checking macros for mq functions.
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Copyright (C) 2007 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _FCNTL_H
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# error "Never include <bits/mqueue2.h> directly; use <mqueue.h> instead."
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#endif
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/* Check that calls to mq_open with O_CREAT set have an appropriate third and fourth
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parameter. */
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extern mqd_t mq_open (__const char *__name, int __oflag, ...)
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__THROW __nonnull ((1));
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extern mqd_t __mq_open_2 (__const char *__name, int __oflag) __nonnull ((1));
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extern mqd_t __REDIRECT (__mq_open_alias, (__const char *__name, int __oflag, ...),
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mq_open) __nonnull ((1));
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__errordecl (__mq_open_wrong_number_of_args,
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"mq_open can be called either with 2 or 4 arguments");
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__errordecl (__mq_open_missing_mode_and_attr,
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"mq_open with O_CREAT in second argument needs 4 arguments");
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__extern_always_inline mqd_t
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mq_open (__const char *__name, int __oflag, ...)
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{
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if (__va_arg_pack_len () != 0 && __va_arg_pack_len () != 2)
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__mq_open_wrong_number_of_args ();
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if (__builtin_constant_p (__oflag))
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{
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if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () == 0)
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{
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__mq_open_missing_mode_and_attr ();
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return __mq_open_2 (__name, __oflag);
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}
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return __mq_open_alias (__name, __oflag, __va_arg_pack ());
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}
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if (__va_arg_pack_len () == 0)
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return __mq_open_2 (__name, __oflag);
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return __mq_open_alias (__name, __oflag, __va_arg_pack ());
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}
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