#include <sys/cdefs.h>
#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/conf.h>
#include <sys/cons.h>
#include <sys/fcntl.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/msgbuf.h>
#include <sys/namei.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/queue.h>
#include <sys/reboot.h>
#include <sys/sysctl.h>
#include <sys/sbuf.h>
#include <sys/tty.h>
#include <sys/uio.h>
#include <sys/vnode.h>
#include <ddb/ddb.h>
#include <machine/cpu.h>
#include <machine/clock.h>

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Data Structures
struct	cn_device

Macros
#define	CNDEVPATHMAX 32

#define	CNDEVTAB_SIZE 4

Functions
	__FBSDID ("$BSDSUniX$")

static	MALLOC_DEFINE (M_TTYCONS,"tty console","tty console handling")

static	STAILQ_HEAD (cn_device)

void	cninit_finish ()

int	cnadd (struct consdev *cn)

void	cnremove (struct consdev *cn)

void	cnselect (struct consdev *cn)

void	cnavailable (struct consdev *cn, int available)

int	cnunavailable (void)

static int	sysctl_kern_console (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern, OID_AUTO, console, CTLTYPE_STRING\|CTLFLAG_RW, 0, 0, sysctl_kern_console,"A","Console device control")

static int	sysctl_kern_consmute (SYSCTL_HANDLER_ARGS)

	SYSCTL_PROC (_kern, OID_AUTO, consmute, CTLTYPE_INT\|CTLFLAG_RW, 0, sizeof(cn_mute), sysctl_kern_consmute,"I","State of the console muting")

void	cngrab ()

void	cnungrab ()

int	cngetc (void)

int	cncheckc (void)

void	cngets (char *cp, size_t size, int visible)

void	cnputc (int c)

void	cnputs (char *p)

	SYSCTL_INT (_kern, OID_AUTO, consmsgbuf_size, CTLFLAG_RW,&consmsgbuf_size, 0,"Console tty buffer size")

void	constty_set (struct tty *tp)

void	constty_clear (void)

	SYSCTL_INT (_kern, OID_AUTO, constty_wakeups_per_second, CTLFLAG_RW,&constty_wakeups_per_second, 0,"Times per second to check for pending console tty messages")

static void	constty_timeout (void *arg)

static void	cn_drvinit (void *unused)

	SYSINIT (cndev, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, cn_drvinit, NULL)

int	sysbeep (int pitch __unused, int period __unused)

Variables
static struct cn_device	cn_devtab [CNDEVTAB_SIZE]

static int	consmsgbuf_size = 8192

static int	constty_wakeups_per_second = 5

Macro Definition Documentation

#define CNDEVPATHMAX 32

Definition at line 79 of file kern_cons.c.

Referenced by sysctl_kern_console().

#define CNDEVTAB_SIZE 4

Definition at line 80 of file kern_cons.c.

Referenced by cnadd(), cnavailable(), and cnremove().

Function Documentation

__FBSDID ( "$BSDSUniX$" )

static void cn_drvinit ( void * unused )

static

Definition at line 593 of file kern_cons.c.

References mtx_init().

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int cnadd ( struct consdev * cn )

Definition at line 168 of file kern_cons.c.

References cn_devtab, cnavailable(), CNDEVTAB_SIZE, printf(), and ttyconsdev_select().

Referenced by STAILQ_HEAD(), sysctl_kern_console(), and termcn_cnregister().

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void cnavailable	(	struct consdev *	cn,
		int	available
	)

Definition at line 249 of file kern_cons.c.

References cn_devtab, and CNDEVTAB_SIZE.

Referenced by cnadd().

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int cncheckc ( void )

Definition at line 394 of file kern_cons.c.

References kdb_active.

Referenced by cngetc(), and shutdown_panic().

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int cngetc ( void )

Definition at line 380 of file kern_cons.c.

References cncheckc().

Referenced by cngets(), cnputc(), shutdown_halt(), and shutdown_panic().

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void cngets	(	char *	cp,
		size_t	size,
		int	visible
	)

Definition at line 414 of file kern_cons.c.

References cngetc(), cngrab(), cnputc(), cnputs(), and cnungrab().

Referenced by parse_dir_ask().

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void cngrab ( )

Definition at line 351 of file kern_cons.c.

References kdb_active.

Referenced by cngets(), cnputc(), kdb_trap(), kern_reboot(), and panic().

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void cninit_finish ( )

Definition at line 161 of file kern_cons.c.

void cnputc ( int c )

Definition at line 463 of file kern_cons.c.

References cngetc(), cngrab(), cnungrab(), and kdb_active.

Referenced by cngets(), cnputs(), constty_clear(), putbuf(), and putchar().

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void cnputs ( char * p )

Definition at line 494 of file kern_cons.c.

References cnputc().

Referenced by _vprintf(), cngets(), and putbuf().

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void cnremove ( struct consdev * cn )

Definition at line 199 of file kern_cons.c.

References cn_devtab, CNDEVTAB_SIZE, and ttyconsdev_select().

Referenced by STAILQ_HEAD(), and sysctl_kern_console().

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void cnselect ( struct consdev * cn )

Definition at line 232 of file kern_cons.c.

References ttyconsdev_select().

Referenced by STAILQ_HEAD(), and sysctl_kern_console().

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int cnunavailable ( void )

Definition at line 269 of file kern_cons.c.

void cnungrab ( )

Definition at line 364 of file kern_cons.c.

References kdb_active.

Referenced by cngets(), cnputc(), and kdb_trap().

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void constty_clear ( void )

Definition at line 545 of file kern_cons.c.

References cnputc(), free(), and msgbuf_getchar().

Referenced by constty_timeout(), tty_generic_ioctl(), and ttydev_leave().

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void constty_set ( struct tty * tp )

Definition at line 526 of file kern_cons.c.

References callout_init(), consmsgbuf_size, constty_timeout(), malloc(), and msgbuf_init().

Referenced by tty_generic_ioctl().

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static void constty_timeout ( void * arg )

static

Definition at line 566 of file kern_cons.c.

References constty_clear(), hz, msgbuf_getchar(), and tty_putchar().

Referenced by constty_set().

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static MALLOC_DEFINE	(	M_TTYCONS	,
		"tty console"	,
		"tty console handling"
	)

static

static STAILQ_HEAD ( cn_device )

static

Definition at line 82 of file kern_cons.c.

References boothowto, cnadd(), cnremove(), and cnselect().

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int sysbeep	(	int pitch	__unused,
		int period	__unused
	)

Definition at line 643 of file kern_cons.c.

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		consmsgbuf_size	,
		CTLFLAG_RW	,
		&	consmsgbuf_size,
		0	,
		"Console tty buffer size"
	)

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		constty_wakeups_per_second	,
		CTLFLAG_RW	,
		&	constty_wakeups_per_second,
		0	,
		"Times per second to check for pending console tty messages"
	)