1/* 2 * Copyright (c) 2013 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 __TTY_DEV_H__ 30#define __TTY_DEV_H__ 31 32/* 33 * ptmx_ioctl is a pointer to a list of pointers to tty structures which is 34 * grown, as necessary, copied, and replaced, but never shrunk. The ioctl 35 * structures themselves pointed to from this list come and go as needed. 36 */ 37struct ptmx_ioctl { 38 struct tty *pt_tty; /* pointer to ttymalloc()'ed data */ 39 int pt_flags; 40 struct selinfo pt_selr; 41 struct selinfo pt_selw; 42 u_char pt_send; 43 u_char pt_ucntl; 44 void *pt_devhandle; /* cloned slave device handle */ 45}; 46 47#define PF_PKT 0x0008 /* packet mode */ 48#define PF_STOPPED 0x0010 /* user told stopped */ 49#define PF_REMOTE 0x0020 /* remote and flow controlled input */ 50#define PF_NOSTOP 0x0040 51#define PF_UCNTL 0x0080 /* user control mode */ 52#define PF_UNLOCKED 0x0100 /* slave unlock (master open resets) */ 53#define PF_OPEN_M 0x0200 /* master is open */ 54#define PF_OPEN_S 0x0400 /* slave is open */ 55 56struct tty_dev_t { 57 int master; // master major device number 58 int slave; // slave major device number 59 unsigned int fix_7828447:1, 60 fix_7070978:1, 61 mac_notify:1, 62 open_reset:1, 63 _reserved:28; 64#if __LP64__ 65 int _pad; 66#endif 67 68 struct tty_dev_t *next; 69 70 struct ptmx_ioctl *(*open)(int minor, int flags); 71 int (*free)(int minor, int flags); 72 int (*name)(int minor, char *buffer, size_t size); 73 void (*revoke)(int minor, struct tty *tp); 74}; 75 76extern void tty_dev_register(struct tty_dev_t *dev); 77 78extern int ttnread(struct tty *tp); 79 80#endif // __TTY_DEV_H__ 81