| 1 | /* Copyright (C) 2005-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #include <errno.h> |
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| 19 | #include <pthreadP.h> |
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| 20 | #include <shlib-compat.h> |
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| 21 | |
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| 22 | int |
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| 23 | __pthread_mutexattr_setrobust (pthread_mutexattr_t *attr, int robustness) |
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| 24 | { |
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| 25 | if (robustness != PTHREAD_MUTEX_STALLED_NP |
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| 26 | && __builtin_expect (robustness != PTHREAD_MUTEX_ROBUST_NP, 0)) |
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| 27 | return EINVAL; |
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| 28 | |
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| 29 | struct pthread_mutexattr *iattr = (struct pthread_mutexattr *) attr; |
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| 30 | |
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| 31 | /* We use bit 30 to signal whether the mutex is going to be |
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| 32 | robust or not. */ |
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| 33 | if (robustness == PTHREAD_MUTEX_STALLED_NP) |
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| 34 | iattr->mutexkind &= ~PTHREAD_MUTEXATTR_FLAG_ROBUST; |
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| 35 | else |
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| 36 | iattr->mutexkind |= PTHREAD_MUTEXATTR_FLAG_ROBUST; |
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| 37 | |
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| 38 | return 0; |
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| 39 | } |
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| 40 | versioned_symbol (libc, __pthread_mutexattr_setrobust, |
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| 41 | pthread_mutexattr_setrobust, GLIBC_2_34); |
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| 42 | |
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| 43 | #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_4, GLIBC_2_34) |
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| 44 | compat_symbol (libpthread, __pthread_mutexattr_setrobust, |
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| 45 | pthread_mutexattr_setrobust_np, GLIBC_2_4); |
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| 46 | #endif |
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| 47 | |
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| 48 | #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_12, GLIBC_2_34) |
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| 49 | compat_symbol (libpthread, __pthread_mutexattr_setrobust, |
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| 50 | pthread_mutexattr_setrobust, GLIBC_2_12); |
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| 51 | #endif |
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| 52 | |
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