1  /* Copyright (C) 1994-2023 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 <hurd.h>
      19  #include <hurd/fd.h>
      20  
      21  /* Allocate a new file descriptor and install PORT in it.  FLAGS are as for
      22     `open'; only O_IGNORE_CTTY and O_CLOEXEC are meaningful.
      23  
      24     If the descriptor table is full, set errno, and return -1.
      25     If DEALLOC is nonzero, deallocate PORT first.  */
      26  int
      27  _hurd_intern_fd (io_t port, int flags, int dealloc)
      28  {
      29    int fd;
      30    struct hurd_fd *d;
      31  
      32    HURD_CRITICAL_BEGIN;
      33    d = _hurd_alloc_fd (&fd, 0);
      34    if (d != NULL)
      35      {
      36        _hurd_port2fd (d, port, flags);
      37        __spin_unlock (&d->port.lock);
      38      }
      39    HURD_CRITICAL_END;
      40  
      41    if (d == NULL)
      42      {
      43        if (dealloc)
      44  	__mach_port_deallocate (__mach_task_self (), port);
      45        return -1;
      46      }
      47  
      48    return fd;
      49  }
      50  libc_hidden_def (_hurd_intern_fd)