nptl/pt-allocrtsig.c

   1 /* Copyright (C) 2002-2020 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <signal.h>
  20
  21
  22 /* These are defined in libc.  We want to have only one definition
  23    so we "forward" the calls.  */
  24 extern int __libc_current_sigrtmin_private (void);
  25 extern int __libc_current_sigrtmax_private (void);
  26 extern int __libc_allocate_rtsig_private (int high);
  27
  28
  29 /* We reserve __SIGRTMIN for use as the cancellation signal and
  30    __SIGRTMIN+1 to handle setuid et.al.  These signals are used
  31    internally.  */
  32 int
  33 __libc_current_sigrtmin (void)
  34 {
  35   return __libc_current_sigrtmin_private ();
  36 }
  37
  38
  39 int
  40 __libc_current_sigrtmax (void)
  41 {
  42   return __libc_current_sigrtmax_private ();
  43 }
  44
  45
  46 int
  47 __libc_allocate_rtsig (int high)
  48 {
  49   return __libc_allocate_rtsig_private (high);
  50 }