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/* Special use of signals internally. Generic version.
Copyright (C) 2014-2018 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/>. */
#ifndef __INTERNAL_SIGNALS_H
# define __INTERNAL_SIGNALS_H
#include <signal.h>
#include <sigsetops.h>
/* Return whether sig is used internally. */
static inline int
__is_internal_signal (int sig)
{
return 0;
}
/* Remove internal glibc signals from the mask. */
static inline void
__clear_internal_signals (sigset_t *set)
{
}
/* Block all signals, including internal glibc ones; write the previous
signal mask to SET. */
static inline int
__libc_signal_block_all (sigset_t *set)
{
sigset_t allset;
__sigfillset (&allset);
return __sigprocmask (SIG_BLOCK, &allset, set);
}
/* Block all application signals (excluding internal glibc ones); write
the previous signal mask to SET. */
static inline int
__libc_signal_block_app (sigset_t *set)
{
sigset_t allset;
__sigfillset (&allset);
__clear_internal_signals (&allset);
return __sigprocmask (SIG_BLOCK, &allset, set);
}
/* Restore process signal mask according to SET. */
static inline int
__libc_signal_restore_set (const sigset_t *set)
{
return __sigprocmask (SIG_SETMASK, set, NULL);
}
#endif
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