sysdeps/unix/sysv/linux/waitpid.c

   1 /* Linux waitpid syscall implementation.
   2    Copyright (C) 1991-2019 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 <errno.h>
  20 #include <sysdep-cancel.h>
  21 #include <stdlib.h>
  22 #include <sys/wait.h>
  23
  24 __pid_t
  25 __waitpid (__pid_t pid, int *stat_loc, int options)
  26 {
  27 #ifdef __NR_waitpid
  28   return SYSCALL_CANCEL (waitpid, pid, stat_loc, options);
  29 #else
  30   return SYSCALL_CANCEL (wait4, pid, stat_loc, options, NULL);
  31 #endif
  32 }
  33 libc_hidden_def (__waitpid)
  34 weak_alias (__waitpid, waitpid)