sysdeps/mach/hurd/sigwait.c

   1 /* Copyright (C) 2022-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <signal.h>
  19 #include <hurd.h>
  20
  21 /* Select any of pending signals from SET or wait for any to arrive.  */
  22 int
  23 __sigwait (const sigset_t *set, int *sig)
  24 {
  25   int ret;
  26
  27   ret = __sigtimedwait (set, NULL, NULL);
  28
  29   if (ret < 0)
  30     return -1;
  31
  32   if (!ret)
  33     return __hurd_fail(EAGAIN);
  34
  35   *sig = ret;
  36   return 0;
  37 }
  38 libc_hidden_def (__sigwait)
  39 weak_alias (__sigwait, sigwait)