support/xsignal.c

   1 /* Error-checking wrapper for signal.
   2    Copyright (C) 2017-2023 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <support/check.h>
  20 #include <support/xsignal.h>
  21
  22 sighandler_t
  23 xsignal (int sig, sighandler_t handler)
  24 {
  25   sighandler_t result = signal (sig, handler);
  26   if (result == SIG_ERR)
  27     FAIL_EXIT1 ("signal (%d, %p): %m", sig, handler);
  28   return result;
  29 }