/*
* Copyright (c) 2017 Nicholas Marriott <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

/*
* Copyright (c) 2011-2013, Chris Johnsen <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
*     1. Redistributions of source code must retain the above
*        copyright notice, this list of conditions and the following
*        disclaimer.
*
*     2. Redistributions in binary form must reproduce the above
*        copyright notice, this list of conditions and the following
*        disclaimer in the documentation and/or other materials
*        provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/types.h>

#include <mach/mach.h>

#include <Availability.h>
#include <unistd.h>

void daemon_darwin(void);

#ifdef __MAC_10_10

extern kern_return_t    bootstrap_look_up_per_user(mach_port_t, const char *,
                           uid_t, mach_port_t *);
extern kern_return_t    bootstrap_get_root(mach_port_t, mach_port_t *);

void
daemon_darwin(void)
{
       mach_port_t     root = MACH_PORT_NULL;
       mach_port_t     s = MACH_PORT_NULL;
       uid_t           uid;

       uid = getuid();
       if (bootstrap_get_root(bootstrap_port, &root) == KERN_SUCCESS &&
           bootstrap_look_up_per_user(root, NULL, uid, &s) == KERN_SUCCESS &&
           task_set_bootstrap_port(mach_task_self(), s) == KERN_SUCCESS &&
           mach_port_deallocate(mach_task_self(), bootstrap_port) == KERN_SUCCESS)
               bootstrap_port = s;
}

#else

void
daemon_darwin(void)
{
}

#endif