tty_inq.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/queue.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/tty.h>
#include <sys/uio.h>
#include <vm/uma.h>

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Data Structures
struct	ttyinq_block

Macros
#define	TTYINQ_QUOTESIZE   (TTYINQ_DATASIZE / BMSIZE)
#define	BMSIZE   32
#define	GETBIT(tib, boff)    ((tib)->tib_quotes[(boff) / BMSIZE] & (1 << ((boff) % BMSIZE)))
#define	SETBIT(tib, boff)    ((tib)->tib_quotes[(boff) / BMSIZE] |= (1 << ((boff) % BMSIZE)))
#define	CLRBIT(tib, boff)    ((tib)->tib_quotes[(boff) / BMSIZE] &= ~(1 << ((boff) % BMSIZE)))
#define	TTYINQ_INSERT_TAIL(ti, tib)
#define	TTYINQ_REMOVE_HEAD(ti)
#define	TTYINQ_RECYCLE(ti, tib)
#define	CORRECT_BLOCK(t)

Functions
	__FBSDID ("$FreeBSD$")
	SYSCTL_INT (_kern, OID_AUTO, tty_inq_flush_secure, CTLFLAG_RW, &ttyinq_flush_secure, 0, "Zero buffers while flushing")
int	ttyinq_setsize (struct ttyinq *ti, struct tty *tp, size_t size)
void	ttyinq_free (struct ttyinq *ti)
int	ttyinq_read_uio (struct ttyinq *ti, struct tty *tp, struct uio *uio, size_t rlen, size_t flen)
static __inline void	ttyinq_set_quotes (struct ttyinq_block *tib, size_t offset, size_t length, int value)
size_t	ttyinq_write (struct ttyinq *ti, const void *buf, size_t nbytes, int quote)
int	ttyinq_write_nofrag (struct ttyinq *ti, const void *buf, size_t nbytes, int quote)
void	ttyinq_canonicalize (struct ttyinq *ti)
size_t	ttyinq_findchar (struct ttyinq *ti, const char *breakc, size_t maxlen, char *lastc)
void	ttyinq_flush (struct ttyinq *ti)
int	ttyinq_peekchar (struct ttyinq *ti, char *c, int *quote)
void	ttyinq_unputchar (struct ttyinq *ti)
void	ttyinq_reprintpos_set (struct ttyinq *ti)
void	ttyinq_reprintpos_reset (struct ttyinq *ti)
static void	ttyinq_line_iterate (struct ttyinq *ti, ttyinq_line_iterator_t *iterator, void *data, unsigned int offset, struct ttyinq_block *tib)
void	ttyinq_line_iterate_from_linestart (struct ttyinq *ti, ttyinq_line_iterator_t *iterator, void *data)
void	ttyinq_line_iterate_from_reprintpos (struct ttyinq *ti, ttyinq_line_iterator_t *iterator, void *data)
static void	ttyinq_startup (void *dummy)
	SYSINIT (ttyinq, SI_SUB_DRIVERS, SI_ORDER_FIRST, ttyinq_startup, NULL)

Variables
static int	ttyinq_flush_secure = 1
static uma_zone_t	ttyinq_zone

Macro Definition Documentation

BMSIZE

#define BMSIZE   32

Definition at line 71 of file tty_inq.c.

CLRBIT

#define CLRBIT	(		tib,
			boff
	)		((tib)->tib_quotes[(boff) / BMSIZE] &= ~(1 << ((boff) % BMSIZE)))

Definition at line 76 of file tty_inq.c.

CORRECT_BLOCK

#define CORRECT_BLOCK

(

t

)

Value:

        do {                    \
        if (t <= TTYINQ_DATASIZE)               \
                t = 0;                          \
        else                                    \
                t -= TTYINQ_DATASIZE;           \
} while (0)

GETBIT

#define GETBIT	(		tib,
			boff
	)		((tib)->tib_quotes[(boff) / BMSIZE] & (1 << ((boff) % BMSIZE)))

Definition at line 72 of file tty_inq.c.

SETBIT

#define SETBIT	(		tib,
			boff
	)		((tib)->tib_quotes[(boff) / BMSIZE] |= (1 << ((boff) % BMSIZE)))

Definition at line 74 of file tty_inq.c.

TTYINQ_INSERT_TAIL

#define TTYINQ_INSERT_TAIL	(		ti,
			tib
	)

Value:

        do {                            \
        if (ti->ti_end == 0) {                                          \
                tib->tib_prev = NULL;                                   \
                tib->tib_next = ti->ti_firstblock;                      \
                ti->ti_firstblock = tib;                                \
        } else {                                                        \
                tib->tib_prev = ti->ti_lastblock;                       \
                tib->tib_next = ti->ti_lastblock->tib_next;             \
                ti->ti_lastblock->tib_next = tib;                       \
        }                                                               \
        if (tib->tib_next != NULL)                                      \
                tib->tib_next->tib_prev = tib;                          \
        ti->ti_nblocks++;                                               \
} while (0)

Definition at line 88 of file tty_inq.c.

TTYINQ_QUOTESIZE

#define TTYINQ_QUOTESIZE   (TTYINQ_DATASIZE / BMSIZE)

Definition at line 70 of file tty_inq.c.

TTYINQ_RECYCLE

#define TTYINQ_RECYCLE	(		ti,
			tib
	)

Value:

        do {                                    \
        if (ti->ti_quota <= ti->ti_nblocks)                             \
                uma_zfree(ttyinq_zone, tib);                            \
	else								\
		TTYINQ_INSERT_TAIL(ti, tib);                          \
} while (0)

Definition at line 110 of file tty_inq.c.

TTYINQ_REMOVE_HEAD

#define TTYINQ_REMOVE_HEAD

(

ti

)

Value:

        do {                                    \
        ti->ti_firstblock = ti->ti_firstblock->tib_next;                \
        if (ti->ti_firstblock != NULL)                                  \
                ti->ti_firstblock->tib_prev = NULL;                     \
        ti->ti_nblocks--;                                               \
} while (0)

Definition at line 103 of file tty_inq.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

SYSCTL_INT()

SYSCTL_INT	(	_kern	,
		OID_AUTO	,
		tty_inq_flush_secure	,
		CTLFLAG_RW	,
		&	ttyinq_flush_secure,
		0	,
		"Zero buffers while flushing"
	)

SYSINIT()

SYSINIT	(	ttyinq	,
		SI_SUB_DRIVERS	,
		SI_ORDER_FIRST	,
		ttyinq_startup	,
		NULL
	)

ttyinq_canonicalize()

void ttyinq_canonicalize

(

struct ttyinq *

ti

)

Definition at line 344 of file tty_inq.c.

Referenced by tty_generic_ioctl(), ttydisc_rint(), and ttydisc_rint_bypass().

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ttyinq_findchar()

size_t ttyinq_findchar	(	struct ttyinq *	ti,
		const char *	breakc,
		size_t	maxlen,
		char *	lastc
	)

Definition at line 352 of file tty_inq.c.

References GETBIT, and ttyinq_block::tib_data.

Referenced by ttydisc_read_canonical().

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ttyinq_flush()

void ttyinq_flush

(

struct ttyinq *

ti

)

Definition at line 378 of file tty_inq.c.

References ttyinq_block::tib_data, ttyinq_block::tib_next, and ttyinq_flush_secure.

Referenced by tty_flush(), and ttyinq_free().

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ttyinq_free()

void ttyinq_free

(

struct ttyinq *

ti

)

Definition at line 150 of file tty_inq.c.

References ttyinq_flush(), TTYINQ_REMOVE_HEAD, and ttyinq_zone.

Referenced by tty_dealloc(), and ttydev_leave().

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ttyinq_line_iterate()

static void ttyinq_line_iterate ( struct ttyinq *  ti, ttyinq_line_iterator_t *  iterator, void *  data, unsigned int  offset, struct ttyinq_block *  tib  )

static

Definition at line 446 of file tty_inq.c.

References data, GETBIT, ttyinq_block::tib_data, and ttyinq_block::tib_next.

Referenced by ttyinq_line_iterate_from_linestart(), and ttyinq_line_iterate_from_reprintpos().

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ttyinq_line_iterate_from_linestart()

void ttyinq_line_iterate_from_linestart	(	struct ttyinq *	ti,
		ttyinq_line_iterator_t *	iterator,
		void *	data
	)

Definition at line 472 of file tty_inq.c.

References data, and ttyinq_line_iterate().

Referenced by ttydisc_reprint().

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ttyinq_line_iterate_from_reprintpos()

void ttyinq_line_iterate_from_reprintpos	(	struct ttyinq *	ti,
		ttyinq_line_iterator_t *	iterator,
		void *	data
	)

Definition at line 481 of file tty_inq.c.

References data, and ttyinq_line_iterate().

Referenced by ttydisc_recalc_linelength().

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ttyinq_peekchar()

int ttyinq_peekchar	(	struct ttyinq *	ti,
		char *	c,
		int *	quote
	)

Definition at line 395 of file tty_inq.c.

References GETBIT, and ttyinq_block::tib_data.

Referenced by ttydisc_rubchar(), and ttydisc_rubword().

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ttyinq_read_uio()

int ttyinq_read_uio	(	struct ttyinq *	ti,
		struct tty *	tp,
		struct uio *	uio,
		size_t	rlen,
		size_t	flen
	)

Definition at line 166 of file tty_inq.c.

References CORRECT_BLOCK, ttyinq_block::tib_data, TTYINQ_RECYCLE, TTYINQ_REMOVE_HEAD, and uiomove().

Referenced by ttydisc_read_canonical(), ttydisc_read_raw_interbyte_timer(), ttydisc_read_raw_no_timer(), and ttydisc_read_raw_read_timer().

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ttyinq_reprintpos_reset()

void ttyinq_reprintpos_reset

(

struct ttyinq *

ti

)

Definition at line 438 of file tty_inq.c.

Referenced by ttydisc_reprint().

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ttyinq_reprintpos_set()

void ttyinq_reprintpos_set

(

struct ttyinq *

ti

)

Definition at line 430 of file tty_inq.c.

Referenced by tty_putstrn(), ttydisc_write(), and ttydisc_write_oproc().

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ttyinq_set_quotes()

static __inline void ttyinq_set_quotes ( struct ttyinq_block *  tib, size_t  offset, size_t  length, int  value  )

static

Definition at line 265 of file tty_inq.c.

References CLRBIT, SETBIT, and value.

Referenced by ttyinq_write().

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ttyinq_setsize()

int ttyinq_setsize	(	struct ttyinq *	ti,
		struct tty *	tp,
		size_t	size
	)

Definition at line 118 of file tty_inq.c.

References TTYINQ_INSERT_TAIL, and ttyinq_zone.

ttyinq_startup()

static void ttyinq_startup ( void *  dummy )

static

Definition at line 490 of file tty_inq.c.

References ttyinq_zone.

ttyinq_unputchar()

void ttyinq_unputchar

(

struct ttyinq *

ti

)

Definition at line 413 of file tty_inq.c.

Referenced by ttydisc_rubchar().

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ttyinq_write()

size_t ttyinq_write	(	struct ttyinq *	ti,
		const void *	buf,
		size_t	nbytes,
		int	quote
	)

Definition at line 281 of file tty_inq.c.

References buf, nbytes, ttyinq_block::tib_data, ttyinq_block::tib_next, and ttyinq_set_quotes().

Referenced by ttydisc_rint_bypass(), and ttyinq_write_nofrag().

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ttyinq_write_nofrag()

int ttyinq_write_nofrag	(	struct ttyinq *	ti,
		const void *	buf,
		size_t	nbytes,
		int	quote
	)

Definition at line 329 of file tty_inq.c.

References buf, nbytes, and ttyinq_write().

Referenced by ttydisc_rint().

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Variable Documentation

ttyinq_flush_secure

int ttyinq_flush_secure = 1

static

Definition at line 66 of file tty_inq.c.

Referenced by ttyinq_flush().

ttyinq_zone

uma_zone_t ttyinq_zone

static

Definition at line 86 of file tty_inq.c.

Referenced by ttyinq_free(), ttyinq_setsize(), and ttyinq_startup().