1/* Copyright (C) 2005-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <errno.h>
19#include <pthreadP.h>
20#include <shlib-compat.h>
21
22int
23__pthread_mutexattr_setrobust (pthread_mutexattr_t *attr, int robustness)
24{
25 if (robustness != PTHREAD_MUTEX_STALLED_NP
26 && __builtin_expect (robustness != PTHREAD_MUTEX_ROBUST_NP, 0))
27 return EINVAL;
28
29 struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr;
30
31 /* We use bit 30 to signal whether the mutex is going to be
32 robust or not. */
33 if (robustness == PTHREAD_MUTEX_STALLED_NP)
34 iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_ROBUST;
35 else
36 iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_ROBUST;
37
38 return 0;
39}
40versioned_symbol (libc, __pthread_mutexattr_setrobust,
41 pthread_mutexattr_setrobust, GLIBC_2_34);
42
43#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_4, GLIBC_2_34)
44compat_symbol (libpthread, __pthread_mutexattr_setrobust,
45 pthread_mutexattr_setrobust_np, GLIBC_2_4);
46#endif
47
48#if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_12, GLIBC_2_34)
49compat_symbol (libpthread, __pthread_mutexattr_setrobust,
50 pthread_mutexattr_setrobust, GLIBC_2_12);
51#endif
52