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| 1 | /* Checking macros for mq functions. |
|---|---|
| 2 | Copyright (C) 2007-2024 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <https://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef _FCNTL_H |
| 20 | # error "Never include <bits/mqueue2.h> directly; use <mqueue.h> instead." |
| 21 | #endif |
| 22 | |
| 23 | /* Check that calls to mq_open with O_CREAT set have an appropriate third and fourth |
| 24 | parameter. */ |
| 25 | extern mqd_t mq_open (const char *__name, int __oflag, ...) |
| 26 | __THROW __nonnull ((1)); |
| 27 | extern mqd_t __mq_open_2 (const char *__name, int __oflag) |
| 28 | __THROW __nonnull ((1)); |
| 29 | extern mqd_t __REDIRECT_NTH (__mq_open_alias, (const char *__name, |
| 30 | int __oflag, ...), mq_open) |
| 31 | __nonnull ((1)); |
| 32 | __errordecl (__mq_open_wrong_number_of_args, |
| 33 | "mq_open can be called either with 2 or 4 arguments"); |
| 34 | __errordecl (__mq_open_missing_mode_and_attr, |
| 35 | "mq_open with O_CREAT in second argument needs 4 arguments"); |
| 36 | |
| 37 | __fortify_function mqd_t |
| 38 | __NTH (mq_open (const char *__name, int __oflag, ...)) |
| 39 | { |
| 40 | if (__va_arg_pack_len () != 0 && __va_arg_pack_len () != 2) |
| 41 | __mq_open_wrong_number_of_args (); |
| 42 | |
| 43 | if (__builtin_constant_p (__oflag)) |
| 44 | { |
| 45 | if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () == 0) |
| 46 | { |
| 47 | __mq_open_missing_mode_and_attr (); |
| 48 | return __mq_open_2 (__name, __oflag); |
| 49 | } |
| 50 | return __mq_open_alias (__name, __oflag, __va_arg_pack ()); |
| 51 | } |
| 52 | |
| 53 | if (__va_arg_pack_len () == 0) |
| 54 | return __mq_open_2 (__name, __oflag); |
| 55 | |
| 56 | return __mq_open_alias (__name, __oflag, __va_arg_pack ()); |
| 57 | } |
| 58 |
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