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glibc  2.9
ports-set.c
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00001 /* Copyright (C) 1994, 1995, 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 setbootstrap (mach_port_t newport)
00023 {
00024   return __task_set_special_port (__mach_task_self (),
00025                               TASK_BOOTSTRAP_PORT,
00026                               newport);
00027 }
00028 
00029 extern error_t _hurd_setauth (auth_t);
00030 extern error_t _hurd_setproc (process_t);
00031 extern error_t _hurd_setcttyid (mach_port_t);
00032 
00033 error_t (*_hurd_ports_setters[INIT_PORT_MAX]) (mach_port_t newport) =
00034   {
00035     [INIT_PORT_BOOTSTRAP] = setbootstrap,
00036     [INIT_PORT_AUTH] = _hurd_setauth,
00037     [INIT_PORT_PROC] = _hurd_setproc,
00038     [INIT_PORT_CTTYID] = _hurd_setcttyid,
00039   };
00040 
00041 
00042 error_t
00043 _hurd_ports_set (unsigned int which, mach_port_t newport)
00044 {
00045   error_t err;
00046   if (which >= _hurd_nports)
00047     return EINVAL;
00048   if (err = __mach_port_mod_refs (__mach_task_self (), newport,
00049                               MACH_PORT_RIGHT_SEND, 1))
00050     return err;
00051   if (which >= INIT_PORT_MAX || _hurd_ports_setters[which] == NULL)
00052     {
00053       _hurd_port_set (&_hurd_ports[which], newport);
00054       return 0;
00055     }
00056   return (*_hurd_ports_setters[which]) (newport);
00057 }