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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/termios.h>
#include <sys/stream.h>
#include <sys/stropts.h>
#include <sys/kmem.h>
#include <sys/stat.h>
#include <sys/sunddi.h>
#include <sys/ddi.h>
#include <sys/bitmap.h>
#include <sys/sysmacros.h>
#include <sys/ddi_impldefs.h>
#include <sys/zone.h>
#include <sys/thread.h>
#ifdef DEBUG
#include <sys/strlog.h>
#endif
#include <sys/consdev.h>
#include <sys/console.h>
#include <sys/wscons.h>
#include <sys/vt_impl.h>
#include <sys/note.h>
#include <sys/avl.h>
/* set if console driver is attached */
dev_info_t *wc_dip = NULL;
/* active virtual console minor number */
minor_t vc_active_console = VT_MINOR_INVALID;
/*
* console_user symbol link minor number.
* VT_MINOR_INVALID : /dev/console
* N : /dev/vt/N
*/
minor_t vc_cons_user = VT_MINOR_INVALID;
/* vc_state_t AVL tree */
avl_tree_t vc_avl_root;
/* virtual console global lock */
kmutex_t vc_lock;
_NOTE(MUTEX_PROTECTS_DATA(vc_lock, wc_dip vc_avl_root vc_active_console
vc_cons_user))
/*
* Called from vt devname part. Checks if dip is attached. If it is,
* return its major number.
*/
major_t
vt_wc_attached(void)
{
major_t maj = (major_t)-1;
mutex_enter(&vc_lock);
if (wc_dip)
maj = ddi_driver_major(wc_dip);
mutex_exit(&vc_lock);
return (maj);
}
void
vt_getactive(char *buf, int buflen)
{
ASSERT(buf);
ASSERT(buflen != 0);
mutex_enter(&vc_lock);
if (vc_active_console == 0 || vc_active_console == VT_MINOR_INVALID)
(void) snprintf(buf, buflen, "/dev/console");
else
(void) snprintf(buf, buflen, "%u", vc_active_console);
mutex_exit(&vc_lock);
}
void
vt_getconsuser(char *buf, int buflen)
{
ASSERT(buf);
ASSERT(buflen != 0);
mutex_enter(&vc_lock);
if (vc_cons_user == VT_MINOR_INVALID) {
(void) snprintf(buf, buflen, "/dev/console");
mutex_exit(&vc_lock);
return;
}
(void) snprintf(buf, buflen, "%u", vc_cons_user);
mutex_exit(&vc_lock);
}
boolean_t
vt_minor_valid(minor_t minor)
{
if (consmode == CONS_FW) {
if (minor == 0)
return (B_TRUE);
return (B_FALSE);
}
mutex_enter(&vc_lock);
if (minor < VC_INSTANCES_COUNT) {
mutex_exit(&vc_lock);
return (B_TRUE);
}
mutex_exit(&vc_lock);
return (B_FALSE);
}
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