diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/sigprocmask.c')
-rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/sigprocmask.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/sigprocmask.c b/REORG.TODO/sysdeps/unix/sysv/linux/sigprocmask.c new file mode 100644 index 0000000000..e39e5f6872 --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/sigprocmask.c @@ -0,0 +1,56 @@ +/* Copyright (C) 1997-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <signal.h> +#include <string.h> /* Needed for string function builtin redirection. */ +#include <unistd.h> + +#include <sysdep.h> +#include <sys/syscall.h> + +#include <nptl/pthreadP.h> /* SIGCANCEL, SIGSETXID */ + + +/* Get and/or change the set of blocked signals. */ +int +__sigprocmask (int how, const sigset_t *set, sigset_t *oset) +{ +#ifdef SIGCANCEL + sigset_t local_newmask; + + /* The only thing we have to make sure here is that SIGCANCEL and + SIGSETXID are not blocked. */ + if (set != NULL + && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) +# ifdef SIGSETXID + || __builtin_expect (__sigismember (set, SIGSETXID), 0) +# endif + )) + { + local_newmask = *set; + __sigdelset (&local_newmask, SIGCANCEL); +# ifdef SIGSETXID + __sigdelset (&local_newmask, SIGSETXID); +# endif + set = &local_newmask; + } +#endif + + return INLINE_SYSCALL (rt_sigprocmask, 4, how, set, oset, _NSIG / 8); +} +weak_alias (__sigprocmask, sigprocmask) |