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git.ipfire.org Git - thirdparty/glibc.git/blob - nptl/pthread_sigmask.c
1 /* Copyright (C) 2002-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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/>. */
21 #include <shlib-compat.h>
24 __pthread_sigmask (int how
, const sigset_t
*newmask
, sigset_t
*oldmask
)
26 sigset_t local_newmask
;
28 /* The only thing we have to make sure here is that SIGCANCEL and
29 SIGSETXID is not blocked. */
31 && (__glibc_unlikely (__sigismember (newmask
, SIGCANCEL
))
32 || __glibc_unlikely (__sigismember (newmask
, SIGSETXID
))))
34 local_newmask
= *newmask
;
35 __clear_internal_signals (&local_newmask
);
36 newmask
= &local_newmask
;
39 /* We know that realtime signals are available if NPTL is used. */
40 int result
= INTERNAL_SYSCALL_CALL (rt_sigprocmask
, how
, newmask
,
41 oldmask
, __NSIG_BYTES
);
43 return (INTERNAL_SYSCALL_ERROR_P (result
)
44 ? INTERNAL_SYSCALL_ERRNO (result
)
47 libc_hidden_def (__pthread_sigmask
)
49 versioned_symbol (libc
, __pthread_sigmask
, pthread_sigmask
, GLIBC_2_32
);
50 #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_32)
51 strong_alias (__pthread_sigmask
, __pthread_sigmask_2
);
52 compat_symbol (libc
, __pthread_sigmask_2
, pthread_sigmask
, GLIBC_2_0
);