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- /* Copyright (C) 1991, 1992 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 Library General Public License as
- published by the Free Software Foundation; either version 2 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <hurd.h>
-
- const struct
- {
- size_t n;
- file_t (*getdport) (int fd);
- } _hurd_getdport_fn;
-
- file_t
- __getdport (int fd)
- {
- if (_hurd_init_dtable != NULL)
- {
- /* getdport is the only use of file descriptors,
- so we don't bother allocating a real table. */
- if (fd < 0 || fd > _hurd_init_dtablesize ||
- _hurd_init_dtable[fd] == MACH_PORT_NULL)
- {
- errno = EBADF;
- return MACH_PORT_NULL;
- }
- else
- {
- __mach_port_mod_refs (__mach_task_self (), _hurd_init_dtable[fd],
- MACH_PORT_RIGHT_SEND, 1);
- return _hurd_init_dtable[fd];
- }
- }
- else
- return (*_hurd_getdport_fn.getdport) (fd);
- }
-