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377f22d8ec
* hurd/privports.c (__get_privileged_ports): Only contact the proc server if necessary for this call. Suggested by Neal H Walfield <neal@cs.uml.edu>. Check error return for mach_port_mod_refs.
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/* Copyright (C) 1993,94,97,2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <hurd.h>
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/* The program might set these if it is the initial task
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bootstrapped by the microkernel. */
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mach_port_t _hurd_host_priv, _hurd_device_master;
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kern_return_t
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__get_privileged_ports (host_priv_t *host_priv_ptr,
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device_t *device_master_ptr)
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{
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if ((host_priv_ptr && _hurd_host_priv == MACH_PORT_NULL)
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|| (device_master_ptr && _hurd_device_master == MACH_PORT_NULL))
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{
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error_t err;
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if (_hurd_ports)
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/* We have gotten some initial ports, so perhaps
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we have a proc server to talk to. */
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err = __USEPORT (PROC, __proc_getprivports (port,
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&_hurd_host_priv,
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&_hurd_device_master));
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else
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return MACH_SEND_INVALID_DEST;
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if (err)
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return err;
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}
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if (host_priv_ptr)
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{
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error_t err = _hurd_host_priv == MACH_PORT_NULL ? 0
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: __mach_port_mod_refs (mach_task_self (),
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_hurd_host_priv, MACH_PORT_RIGHT_SEND, +1);
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if (err)
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return err;
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*host_priv_ptr = _hurd_host_priv;
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}
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if (device_master_ptr)
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{
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error_t err = _hurd_device_master == MACH_PORT_NULL ? 0
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: __mach_port_mod_refs (mach_task_self (),
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_hurd_device_master, MACH_PORT_RIGHT_SEND, +1);
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if (err)
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return err;
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*device_master_ptr = _hurd_device_master;
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}
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return KERN_SUCCESS;
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}
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weak_alias (__get_privileged_ports, get_privileged_ports)
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