X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/6601e61aa18bf4f09af135ff61fc7f4771d23b06..7ee9d059c4eecf68ae4f8b0fb99ae2471eda79af:/bsd/sys/tty.h

diff --git a/bsd/sys/tty.h b/bsd/sys/tty.h
index b74c3f510..ecfb234d5 100644
--- a/bsd/sys/tty.h
+++ b/bsd/sys/tty.h
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
  * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1997 Apple Computer, Inc. All Rights Reserved */
 /*-
@@ -70,6 +76,11 @@
 
 
 #ifdef KERNEL
+
+__BEGIN_DECLS
+#include <kern/locks.h>
+__END_DECLS
+
 /*
  * NetBSD Clists are actually ring buffers. The c_cc, c_cf, c_cl fields have
  * exactly the same behaviour as in true clists.
@@ -101,6 +112,8 @@ struct clist {
  * (low, high, timeout).
  */
 struct tty {
+	lck_mtx_t	t_lock;		/* Per tty lock */
+
 	struct	clist t_rawq;		/* Device raw input queue. */
 	long	t_rawcc;		/* Raw input queue statistics. */
 	struct	clist t_canq;		/* Device canonical queue. */
@@ -130,8 +143,11 @@ struct tty {
 	int	t_hiwat;		/* High water mark. */
 	int	t_lowat;		/* Low water mark. */
 	int	t_gen;			/* Generation number. */
+	void	*t_iokit;		/* IOKit management */
 };
 
+#define TTY_NULL (struct tty *)0
+
 #define	t_cc		t_termios.c_cc
 #define	t_cflag		t_termios.c_cflag
 #define	t_iflag		t_termios.c_iflag
@@ -204,6 +220,8 @@ struct clist;
 #define	TS_DSR_OFLOW	0x800000	/* For CDSR_OFLOW. */
 #endif
 
+#define	TS_IOCTL_NOT_OK	0x1000000	/* Workaround <rdar://....> */
+
 
 /* Character type information. */
 #define	ORDINARY	0
@@ -235,13 +253,6 @@ struct speedtab {
 #define	TTY_BI		0x08000000	/* Break condition */
 
 #ifdef KERNEL
-/* Is tp controlling terminal for p? */
-#define	isctty(p, tp)							\
-	((p)->p_session == (tp)->t_session && (p)->p_flag & P_CONTROLT)
-
-/* Is p in background of tp? */
-#define	isbackground(p, tp)						\
-	(isctty((p), (tp)) && (p)->p_pgrp != (tp)->t_pgrp)
 
 /* Unique sleep addresses. */
 #define	TSA_CARR_ON(tp)		((void *)&(tp)->t_rawq)
@@ -272,17 +283,26 @@ void	cinit(void);
 void	clrbits(u_char *cp, int off, int len);
 
 #ifdef KERNEL_PRIVATE
+void	tty_init(void);
+/*
+ * The locked version of this function is used from routines which hold
+ * the tty_lock(), such as ttcompat() in tty_compat.c
+ */
+int	ttioctl_locked(struct tty *tp, u_long com, caddr_t data, int flag,
+	    struct proc *p);
+
 int	ttcompat(struct tty *tp, u_long com, caddr_t data, int flag,
 	    struct proc *p);
-int	ttsetcompat(struct tty *tp, u_long *com, caddr_t data, struct termios *term);
 #endif /* KERNEL_PRIVATE */
 
+void tty_lock(struct tty *tp);
+void tty_unlock(struct tty *tp);
+
 void	 termioschars(struct termios *t);
 int	 tputchar(int c, struct tty *tp);
 int	 ttioctl(struct tty *tp, u_long com, caddr_t data, int flag,
 	    struct proc *p);
 int	 ttread(struct tty *tp, struct uio *uio, int flag);
-void	 ttrstrt(void *tp);
 int	 ttyselect(struct tty *tp, int rw, void * wql, struct proc *p);
 int	 ttselect(dev_t dev, int rw, void * wql, struct proc *p);
 void	 ttsetwater(struct tty *tp);
@@ -292,11 +312,11 @@ void	 ttwakeup(struct tty *tp);
 int	 ttwrite(struct tty *tp, struct uio *uio, int flag);
 void	 ttwwakeup(struct tty *tp);
 void	 ttyblock(struct tty *tp);
-void	 ttychars(struct tty *tp);
 int	 ttycheckoutq(struct tty *tp, int wait);
-int	 ttyclose(struct tty *tp);
+int	 ttyclose(struct tty *tp);	/* LEGACY: avoid using */
 void	 ttyflush(struct tty *tp, int rw);
 void	 ttyinfo(struct tty *tp);
+void	 ttyinfo_locked(struct tty *tp);
 int	 ttyinput(int c, struct tty *tp);
 int	 ttylclose(struct tty *tp, int flag);
 int	 ttymodem(struct tty *tp, int flag);