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, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <string.h>
  22 #include <sys/utsname.h>
  23
  24 #include <kernel-features.h>
  25
  26 static int
  27 kernel_has_rtsig (void)
  28 {
  29 #if __ASSUME_REALTIME_SIGNALS
  30   return 1;
  31 #else
  32   struct utsname name;
  33
  34   return uname (&name) == 0 && __strverscmp (name.release, "2.1.70") >= 0;
  35 #endif
  36 }