1  /* Create create pipe.  Linux generic version.
       2     Copyright (C) 2021-2023 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 <unistd.h>
      20  #include <sysdep.h>
      21  
      22  /* Create a one-way communication channel (__pipe).
      23     If successful, two file descriptors are stored in PIPEDES;
      24     bytes written on PIPEDES[1] can be read from PIPEDES[0].
      25     Returns 0 if successful, -1 if not.  */
      26  int
      27  __pipe (int __pipedes[2])
      28  {
      29    return INLINE_SYSCALL_CALL (pipe2, (int *) __pipedes, 0);
      30  }
      31  libc_hidden_def (__pipe)
      32  weak_alias (__pipe, pipe)