summary refs log tree commit diff
path: root/hurd/intern-fd.c
blob: 97f5d34ae13f64d2467f460225f9594306be4ee6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
/* Copyright (C) 1994-2013 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <hurd.h>
#include <hurd/fd.h>

/* Allocate a new file descriptor and install PORT in it.  FLAGS are as for
   `open'; only O_IGNORE_CTTY and O_CLOEXEC are meaningful.

   If the descriptor table is full, set errno, and return -1.
   If DEALLOC is nonzero, deallocate PORT first.  */
int
_hurd_intern_fd (io_t port, int flags, int dealloc)
{
  int fd;
  struct hurd_fd *d;

  HURD_CRITICAL_BEGIN;
  d = _hurd_alloc_fd (&fd, 0);
  if (d != NULL)
    {
      _hurd_port2fd (d, port, flags);
      __spin_unlock (&d->port.lock);
    }
  HURD_CRITICAL_END;

  if (d == NULL)
    {
      if (dealloc)
	__mach_port_deallocate (__mach_task_self (), port);
      return -1;
    }

  return fd;
}