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/* Request dead-name notifications
Copyright (C) 2021 Free Software Foundation, Inc.
Written by Sergey Bugaev <bugaevc@gmail.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "ports.h"
#include <mach/notify.h>
error_t
ports_request_dead_name_notification (void *object, mach_port_t name,
mach_port_t *previous)
{
error_t err;
mach_port_t notify_port;
mach_port_t prev;
if (object)
notify_port = ports_port_notify_right (object);
else
notify_port = MACH_PORT_NULL;
err = mach_port_request_notification (mach_task_self (), name,
MACH_NOTIFY_DEAD_NAME, 1,
notify_port,
MACH_MSG_TYPE_MAKE_SEND_ONCE,
&prev);
if (err)
return err;
if (previous != NULL)
*previous = prev;
else if (MACH_PORT_VALID (prev))
{
err = mach_port_deallocate (mach_task_self (), prev);
assert_perror_backtrace (err);
}
return 0;
}
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