glibc/hurd/ports-get.c
Thomas Bushnell, BSG 6428aed93c Tue Oct 8 13:58:31 1996 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu>
* hurd/ports-get.c (_hurd_ports_get): If the requested port is
	null, don't attempt mach_port_mod_refs.
1996-10-08 18:38:34 +00:00

47 lines
1.5 KiB
C

/* Copyright (C) 1994, 1995, 1996 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>
static error_t
getbootstrap (mach_port_t *result)
{
return __task_get_special_port (__mach_task_self (),
TASK_BOOTSTRAP_PORT,
result);
}
error_t (*_hurd_ports_getters[INIT_PORT_MAX]) (mach_port_t *result) =
{
[INIT_PORT_BOOTSTRAP] = getbootstrap,
};
error_t
_hurd_ports_get (unsigned int which, mach_port_t *result)
{
if (which >= _hurd_nports)
return EINVAL;
if (which >= INIT_PORT_MAX || _hurd_ports_getters[which] == NULL)
return HURD_PORT_USE (&_hurd_ports[which],
(*result = port) == MACH_PORT_NULL ? 0
: __mach_port_mod_refs (__mach_task_self (),
port, MACH_PORT_RIGHT_SEND,
+1));
return (*_hurd_ports_getters[which]) (result);
}