bsd/kern/sys_eventlink.c

   1 /*
   2  * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <sys/param.h>
  30 #include <sys/kernel.h>
  31 #include <sys/kernel_types.h>
  32 #include <sys/sysproto.h>
  33 #include <mach/mach_types.h>
  34 #include <mach/mach_eventlink_types.h>
  35
  36 extern uint64_t
  37 mach_eventlink_signal_trap(
  38         mach_port_name_t port,
  39         uint64_t         signal_count __unused);
  40
  41 extern uint64_t
  42 mach_eventlink_wait_until_trap(
  43         mach_port_name_t                    eventlink_port,
  44         uint64_t                            wait_count,
  45         mach_eventlink_signal_wait_option_t option,
  46         kern_clock_id_t                     clock_id,
  47         uint64_t                            deadline);
  48
  49 extern uint64_t
  50 mach_eventlink_signal_wait_until_trap(
  51         mach_port_name_t                    eventlink_port,
  52         uint64_t                            wait_count,
  53         uint64_t                            signal_count __unused,
  54         mach_eventlink_signal_wait_option_t option,
  55         kern_clock_id_t                     clock_id,
  56         uint64_t                            deadline);
  57
  58 int
  59 mach_eventlink_signal(
  60         __unused proc_t p,
  61         struct mach_eventlink_signal_args *uap,
  62         uint64_t *retval)
  63 {
  64         *retval = mach_eventlink_signal_trap(uap->eventlink_port, uap->signal_count);
  65         return 0;
  66 }
  67
  68 int
  69 mach_eventlink_wait_until(
  70         __unused proc_t p,
  71         struct mach_eventlink_wait_until_args *uap,
  72         uint64_t *retval)
  73 {
  74         *retval = mach_eventlink_wait_until_trap(uap->eventlink_port, uap->wait_count,
  75             uap->option, uap->clock_id, uap->deadline);
  76         return 0;
  77 }
  78
  79 int
  80 mach_eventlink_signal_wait_until(
  81         __unused proc_t p,
  82         struct mach_eventlink_signal_wait_until_args *uap,
  83         uint64_t *retval)
  84 {
  85         *retval = mach_eventlink_signal_wait_until_trap(uap->eventlink_port, uap->wait_count,
  86             uap->signal_count, uap->option, uap->clock_id, uap->deadline);
  87         return 0;
  88 }