1/* Change priority protocol setting in pthread_mutexattr_t.
2 Copyright (C) 2006-2023 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#include <errno.h>
20#include <pthreadP.h>
21#include <shlib-compat.h>
22
23int
24__pthread_mutexattr_setprotocol (pthread_mutexattr_t *attr, int protocol)
25{
26 if (protocol != PTHREAD_PRIO_NONE
27 && protocol != PTHREAD_PRIO_INHERIT
28 && __builtin_expect (protocol != PTHREAD_PRIO_PROTECT, 0))
29 return EINVAL;
30
31 struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;
32
33 iattr->mutexkind = ((iattr->mutexkind & ~PTHREAD_MUTEXATTR_PROTOCOL_MASK)
34 | (protocol << PTHREAD_MUTEXATTR_PROTOCOL_SHIFT));
35
36 return 0;
37}
38versioned_symbol (libc, __pthread_mutexattr_setprotocol,
39 pthread_mutexattr_setprotocol, GLIBC_2_34);
40
41#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_4, GLIBC_2_34)
42compat_symbol (libpthread, __pthread_mutexattr_setprotocol,
43 pthread_mutexattr_setprotocol, GLIBC_2_4);
44#endif
45