sysdeps/generic/internal-signals.h

   1 /* Special use of signals internally.  Stub version.
   2    Copyright (C) 2014-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef __INTERNAL_SIGNALS_H
  20 # define __INTERNAL_SIGNALS_H
  21
  22 #include <signal.h>
  23 #include <sigsetops.h>
  24 #include <stdbool.h>
  25
  26 static inline bool
  27 __is_internal_signal (int sig)
  28 {
  29   return false;
  30 }
  31
  32 static inline void
  33 __clear_internal_signals (sigset_t *set)
  34 {
  35 }
  36
  37 static inline int
  38 __libc_signal_block_all (sigset_t *set)
  39 {
  40   sigset_t allset;
  41   __sigfillset (&allset);
  42   return __sigprocmask (SIG_BLOCK, &allset, set);
  43 }
  44
  45 static inline int
  46 __libc_signal_block_app (sigset_t *set)
  47 {
  48   sigset_t allset;
  49   __sigfillset (&allset);
  50   __clear_internal_signals (&allset);
  51   return __sigprocmask (SIG_BLOCK, &allset, set);
  52 }
  53
  54 /* Restore current process signal mask.  */
  55 static inline int
  56 __libc_signal_restore_set (const sigset_t *set)
  57 {
  58   return __sigprocmask (SIG_SETMASK, set, NULL);
  59 }
  60
  61
  62 #endif /* __INTERNAL_SIGNALS_H  */