bsd/net/restricted_in_port.h

   1 /*
   2  * Copyright (c) 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 #ifndef _NETINET_IN_RESTRICTED_PORT_H_
  30 #define _NETINET_IN_RESTRICTED_PORT_H_
  31
  32 #ifdef BSD_KERNEL_PRIVATE
  33
  34 #include <kern/bits.h>
  35
  36 #define PORT_FLAGS_LISTENER 0x00
  37 #define PORT_FLAGS_BSD      0x02
  38 #define PORT_FLAGS_PF       0x03
  39 #define PORT_FLAGS_MAX      0x03
  40
  41 /*
  42  * the port in network byte order
  43  */
  44 #define IS_RESTRICTED_IN_PORT(x) (bitmap_test(restricted_port_bitmap, ntohs((uint16_t)(x))))
  45
  46 extern bitmap_t *restricted_port_bitmap;
  47
  48 extern void restricted_in_port_init(void);
  49
  50 /*
  51  * The port must be in network byte order
  52  */
  53 extern bool current_task_can_use_restricted_in_port(in_port_t port, uint8_t protocol, uint32_t port_flags);
  54
  55 #endif /* BSD_KERNEL_PRIVATE */
  56
  57 #endif /* _NETINET_IN_RESTRICTED_PORT_H_ */