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glibc  2.9
ports-get.c
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00001 /* Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003 
00004    The GNU C Library is free software; you can redistribute it and/or
00005    modify it under the terms of the GNU Lesser General Public
00006    License as published by the Free Software Foundation; either
00007    version 2.1 of the License, or (at your option) any later version.
00008 
00009    The GNU C Library is distributed in the hope that it will be useful,
00010    but WITHOUT ANY WARRANTY; without even the implied warranty of
00011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012    Lesser General Public License for more details.
00013 
00014    You should have received a copy of the GNU Lesser General Public
00015    License along with the GNU C Library; if not, write to the Free
00016    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00017    02111-1307 USA.  */
00018 
00019 #include <hurd.h>
00020 
00021 static error_t
00022 getbootstrap (mach_port_t *result)
00023 {
00024   return __task_get_special_port (__mach_task_self (),
00025                               TASK_BOOTSTRAP_PORT,
00026                               result);
00027 }
00028 
00029 error_t (*_hurd_ports_getters[INIT_PORT_MAX]) (mach_port_t *result) =
00030   {
00031     [INIT_PORT_BOOTSTRAP] = getbootstrap,
00032   };
00033 
00034 error_t
00035 _hurd_ports_get (unsigned int which, mach_port_t *result)
00036 {
00037   if (which >= _hurd_nports)
00038     return EINVAL;
00039   if (which >= INIT_PORT_MAX || _hurd_ports_getters[which] == NULL)
00040     return HURD_PORT_USE (&_hurd_ports[which],
00041                        (*result = port) == MACH_PORT_NULL ? 0 
00042                        : __mach_port_mod_refs (__mach_task_self (),
00043                                             port, MACH_PORT_RIGHT_SEND,
00044                                             +1));
00045   return (*_hurd_ports_getters[which]) (result);
00046 }