home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Languguage OS 2
/
Languguage OS II Version 10-94 (Knowledge Media)(1994).ISO
/
gnu
/
glibc108.zip
/
glibc108
/
hurd
/
__getdport.c
< prev
next >
Wrap
C/C++ Source or Header
|
1994-01-31
|
2KB
|
53 lines
/* Copyright (C) 1991, 1992, 1994 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>
/* This is initialized in dtable.c when that gets linked in.
If dtable.c is not linked in, it will be zero. */
file_t (*_hurd_getdport_fn) (int fd);
file_t
__getdport (int fd)
{
if (_hurd_getdport_fn)
/* dtable.c has defined the function to fetch a port from the real file
descriptor table. */
return (*_hurd_getdport_fn) (fd);
/* getdport is the only use of file descriptors,
so we don't bother allocating a real table. */
if (_hurd_init_dtable == NULL)
/* Never had a descriptor table. */
return EBADF;
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];
}
}