nptl/sigaction.c

   1 /* Copyright (C) 2002-2018 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    <http://www.gnu.org/licenses/>.  */
  18
  19
  20 /* This is no complete implementation.  The file is meant to be
  21    included in the real implementation to provide the wrapper around
  22    __libc_sigaction.  */
  23
  24 #include <nptl/pthreadP.h>
  25
  26 /* We use the libc implementation but we tell it to not allow
  27    SIGCANCEL or SIGTIMER to be handled.  */
  28 #define LIBC_SIGACTION  1
  29
  30
  31 int
  32 __sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
  33 {
  34   if (__glibc_unlikely (sig == SIGCANCEL || sig == SIGSETXID))
  35     {
  36       __set_errno (EINVAL);
  37       return -1;
  38     }
  39
  40   return __libc_sigaction (sig, act, oact);
  41 }
  42 libc_hidden_weak (__sigaction)
  43 weak_alias (__sigaction, sigaction)