sysdeps/unix/sysv/linux/testrtsig.h

   1 /* Test whether RT signals are really available.
   2    Copyright (C) 1997, 1999, 2006 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <string.h>
  21 #include <sys/utsname.h>
  22
  23 #include <kernel-features.h>
  24
  25 static int
  26 kernel_has_rtsig (void)
  27 {
  28 #if __ASSUME_REALTIME_SIGNALS
  29   return 1;
  30 #else
  31   struct utsname name;
  32
  33   return uname (&name) == 0 && __strverscmp (name.release, "2.1.70") >= 0;
  34 #endif
  35 }