tty_pts.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/condvar.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/filio.h>
#include <sys/kernel.h>
#include <sys/limits.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/poll.h>
#include <sys/proc.h>
#include <sys/racct.h>
#include <sys/resourcevar.h>
#include <sys/serial.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/syscallsubr.h>
#include <sys/sysctl.h>
#include <sys/sysent.h>
#include <sys/sysproto.h>
#include <sys/systm.h>
#include <sys/tty.h>
#include <sys/ttycom.h>
#include <sys/uio.h>
#include <sys/user.h>
#include <machine/stdarg.h>

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Data Structures
struct	pts_softc

Macros
#define	PTS_COMPAT
#define	PTS_EXTERNAL
#define	PTS_LINUX
#define	PTS_PKT   0x1 /* Packet mode. */
#define	PTS_FINISHED   0x2 /* Return errors on read()/write(). */

Functions
	__FBSDID ("$FreeBSD$")
static	MALLOC_DEFINE (M_PTS, "pts", "pseudo tty device")
static int	ptsdev_read (struct file *fp, struct uio *uio, struct ucred *active_cred, int flags, struct thread *td)
static int	ptsdev_write (struct file *fp, struct uio *uio, struct ucred *active_cred, int flags, struct thread *td)
static int	ptsdev_ioctl (struct file *fp, u_long cmd, void *data, struct ucred *active_cred, struct thread *td)
static int	ptsdev_poll (struct file *fp, int events, struct ucred *active_cred, struct thread *td)
static void	pts_kqops_read_detach (struct knote *kn)
static int	pts_kqops_read_event (struct knote *kn, long hint)
static void	pts_kqops_write_detach (struct knote *kn)
static int	pts_kqops_write_event (struct knote *kn, long hint)
static int	ptsdev_kqfilter (struct file *fp, struct knote *kn)
static int	ptsdev_stat (struct file *fp, struct stat *sb, struct ucred *active_cred)
static int	ptsdev_close (struct file *fp, struct thread *td)
static int	ptsdev_fill_kinfo (struct file *fp, struct kinfo_file *kif, struct filedesc *fdp)
static void	ptsdrv_outwakeup (struct tty *tp)
static void	ptsdrv_inwakeup (struct tty *tp)
static int	ptsdrv_open (struct tty *tp)
static void	ptsdrv_close (struct tty *tp)
static void	ptsdrv_pktnotify (struct tty *tp, char event)
static void	ptsdrv_free (void *softc)
int	pts_alloc (int fflags, struct thread *td, struct file *fp)
int	pts_alloc_external (int fflags, struct thread *td, struct file *fp, struct cdev *dev, const char *name)
int	sys_posix_openpt (struct thread *td, struct posix_openpt_args *uap)
static void	pts_init (void *unused)
	SYSINIT (pts, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, pts_init, NULL)

Variables
static struct unrhdr *	pts_pool
static struct filterops	pts_kqops_read
static struct filterops	pts_kqops_write
static struct fileops	ptsdev_ops
static struct ttydevsw	pts_class

Macro Definition Documentation

PTS_COMPAT

#define PTS_COMPAT

Definition at line 36 of file tty_pts.c.

PTS_EXTERNAL

#define PTS_EXTERNAL

Definition at line 38 of file tty_pts.c.

PTS_FINISHED

#define PTS_FINISHED   0x2 /* Return errors on read()/write(). */

Definition at line 94 of file tty_pts.c.

PTS_LINUX

#define PTS_LINUX

Definition at line 40 of file tty_pts.c.

PTS_PKT

#define PTS_PKT   0x1 /* Packet mode. */

Definition at line 93 of file tty_pts.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

MALLOC_DEFINE()

static MALLOC_DEFINE ( M_PTS  , "pts"  , "pseudo tty device"    )

static

pts_alloc()

int pts_alloc	(	int	fflags,
		struct thread *	td,
		struct file *	fp
	)

Definition at line 738 of file tty_pts.c.

References alloc_unr(), chgptscnt(), crhold(), cv_init(), finit(), knlist_init_mtx(), lim_cur(), malloc(), pts_class, pts_softc::pts_cred, pts_softc::pts_inpoll, pts_softc::pts_inwait, pts_softc::pts_outpoll, pts_softc::pts_outwait, pts_pool, pts_softc::pts_unit, ptsdev_ops, and tty_alloc().

Referenced by sys_posix_openpt().

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pts_alloc_external()

int pts_alloc_external	(	int	fflags,
		struct thread *	td,
		struct file *	fp,
		struct cdev *	dev,
		const char *	name
	)

Definition at line 791 of file tty_pts.c.

References chgptscnt(), crhold(), cv_init(), finit(), knlist_init_mtx(), lim_cur(), malloc(), name, pts_softc::pts_cdev, pts_class, pts_softc::pts_cred, pts_softc::pts_inpoll, pts_softc::pts_inwait, pts_softc::pts_outpoll, pts_softc::pts_outwait, pts_softc::pts_unit, ptsdev_ops, and tty_alloc().

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pts_init()

static void pts_init ( void *  unused )

static

Definition at line 870 of file tty_pts.c.

References new_unrhdr(), and pts_pool.

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pts_kqops_read_detach()

static void pts_kqops_read_detach ( struct knote *  kn )

static

Definition at line 448 of file tty_pts.c.

References knlist_remove(), and pts_softc::pts_outpoll.

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pts_kqops_read_event()

static int pts_kqops_read_event ( struct knote *  kn, long  hint  )

static

Definition at line 458 of file tty_pts.c.

References PTS_FINISHED, pts_softc::pts_flags, and ttydisc_getc_poll().

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pts_kqops_write_detach()

static void pts_kqops_write_detach ( struct knote *  kn )

static

Definition at line 474 of file tty_pts.c.

References knlist_remove(), and pts_softc::pts_inpoll.

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pts_kqops_write_event()

static int pts_kqops_write_event ( struct knote *  kn, long  hint  )

static

Definition at line 484 of file tty_pts.c.

References PTS_FINISHED, pts_softc::pts_flags, and ttydisc_rint_poll().

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ptsdev_close()

static int ptsdev_close ( struct file *  fp, struct thread *  td  )

static

Definition at line 574 of file tty_pts.c.

References tty_rel_gone(), and vnops.

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ptsdev_fill_kinfo()

static int ptsdev_fill_kinfo ( struct file *  fp, struct kinfo_file *  kif, struct filedesc *  fdp  )

static

Definition at line 595 of file tty_pts.c.

References tty_udev().

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ptsdev_ioctl()

static int ptsdev_ioctl ( struct file *  fp, u_long  cmd, void *  data, struct ucred *  active_cred, struct thread *  td  )

static

Definition at line 261 of file tty_pts.c.

References data, PTS_FINISHED, pts_softc::pts_flags, PTS_PKT, pts_softc::pts_unit, tty_ioctl(), tty_signal_pgrp(), and ttydisc_getc_poll().

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ptsdev_kqfilter()

static int ptsdev_kqfilter ( struct file *  fp, struct knote *  kn  )

static

Definition at line 511 of file tty_pts.c.

References knlist_add(), pts_softc::pts_inpoll, pts_kqops_read, pts_kqops_write, and pts_softc::pts_outpoll.

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ptsdev_poll()

static int ptsdev_poll ( struct file *  fp, int  events, struct ucred *  active_cred, struct thread *  td  )

static

Definition at line 393 of file tty_pts.c.

References PTS_FINISHED, pts_softc::pts_flags, pts_softc::pts_inpoll, pts_softc::pts_outpoll, PTS_PKT, pts_softc::pts_pkt, selrecord(), ttydisc_getc_poll(), and ttydisc_rint_poll().

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ptsdev_read()

static int ptsdev_read ( struct file *  fp, struct uio *  uio, struct ucred *  active_cred, int  flags, struct thread *  td  )

static

Definition at line 114 of file tty_pts.c.

References PTS_FINISHED, pts_softc::pts_flags, pts_softc::pts_outwait, PTS_PKT, pts_softc::pts_pkt, ttydisc_getc_poll(), ttydisc_getc_uio(), and ureadc().

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ptsdev_stat()

static int ptsdev_stat ( struct file *  fp, struct stat *  sb, struct ucred *  active_cred  )

static

Definition at line 538 of file tty_pts.c.

References pts_softc::pts_cdev, and tty_udev().

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ptsdev_write()

static int ptsdev_write ( struct file *  fp, struct uio *  uio, struct ucred *  active_cred, int  flags, struct thread *  td  )

static

Definition at line 188 of file tty_pts.c.

References PTS_FINISHED, pts_softc::pts_flags, pts_softc::pts_inwait, ttydisc_rint_done(), ttydisc_rint_simple(), and uiomove().

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ptsdrv_close()

static void ptsdrv_close ( struct tty *  tp )

static

Definition at line 659 of file tty_pts.c.

References PTS_FINISHED, pts_softc::pts_flags, ptsdrv_inwakeup(), and ptsdrv_outwakeup().

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ptsdrv_free()

static void ptsdrv_free ( void *  softc )

static

Definition at line 698 of file tty_pts.c.

References chgptscnt(), crfree(), destroy_dev_sched(), free(), free_unr(), knlist_destroy(), pts_softc::pts_cdev, pts_softc::pts_cred, pts_softc::pts_inpoll, pts_softc::pts_outpoll, pts_pool, pts_softc::pts_unit, and seldrain().

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ptsdrv_inwakeup()

static void ptsdrv_inwakeup ( struct tty *  tp )

static

Definition at line 639 of file tty_pts.c.

References pts_softc::pts_inpoll, pts_softc::pts_inwait, and selwakeup().

Referenced by ptsdrv_close().

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ptsdrv_open()

static int ptsdrv_open ( struct tty *  tp )

static

Definition at line 649 of file tty_pts.c.

References pts_softc::pts_flags.

ptsdrv_outwakeup()

static void ptsdrv_outwakeup ( struct tty *  tp )

static

Definition at line 629 of file tty_pts.c.

References pts_softc::pts_outpoll, pts_softc::pts_outwait, and selwakeup().

Referenced by ptsdrv_close(), and ptsdrv_pktnotify().

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ptsdrv_pktnotify()

static void ptsdrv_pktnotify ( struct tty *  tp, char  event  )

static

Definition at line 670 of file tty_pts.c.

References pts_softc::pts_pkt, and ptsdrv_outwakeup().

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sys_posix_openpt()

int sys_posix_openpt	(	struct thread *	td,
		struct posix_openpt_args *	uap
	)

Definition at line 838 of file tty_pts.c.

References fd, fdclose(), and pts_alloc().

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SYSINIT()

SYSINIT	(	pts	,
		SI_SUB_DRIVERS	,
		SI_ORDER_MIDDLE	,
		pts_init	,
		NULL
	)

Variable Documentation

pts_class

struct ttydevsw pts_class

static

Initial value:

= {
        .tsw_flags      = TF_NOPREFIX,
        .tsw_outwakeup  = ptsdrv_outwakeup,
        .tsw_inwakeup   = ptsdrv_inwakeup,
        .tsw_open       = ptsdrv_open,
        .tsw_close      = ptsdrv_close,
        .tsw_pktnotify  = ptsdrv_pktnotify,
        .tsw_free       = ptsdrv_free,
}

Definition at line 724 of file tty_pts.c.

Referenced by pts_alloc(), and pts_alloc_external().

pts_kqops_read

struct filterops pts_kqops_read

static

Initial value:

= {
        .f_isfd = 1,
        .f_detach = pts_kqops_read_detach,
        .f_event = pts_kqops_read_event,
}

Definition at line 499 of file tty_pts.c.

Referenced by ptsdev_kqfilter().

pts_kqops_write

struct filterops pts_kqops_write

static

Initial value:

= {
        .f_isfd = 1,
        .f_detach = pts_kqops_write_detach,
        .f_event = pts_kqops_write_event,
}

Definition at line 504 of file tty_pts.c.

Referenced by ptsdev_kqfilter().

pts_pool

struct unrhdr* pts_pool

static

Definition at line 79 of file tty_pts.c.

Referenced by pts_alloc(), pts_init(), and ptsdrv_free().

ptsdev_ops

struct fileops ptsdev_ops

static

Initial value:

= {
        .fo_read        = ptsdev_read,
        .fo_write       = ptsdev_write,
        .fo_truncate    = invfo_truncate,
        .fo_ioctl       = ptsdev_ioctl,
        .fo_poll        = ptsdev_poll,
        .fo_kqfilter    = ptsdev_kqfilter,
        .fo_stat        = ptsdev_stat,
        .fo_close       = ptsdev_close,
        .fo_chmod       = invfo_chmod,
        .fo_chown       = invfo_chown,
        .fo_sendfile    = invfo_sendfile,
        .fo_fill_kinfo  = ptsdev_fill_kinfo,
        .fo_flags       = DFLAG_PASSABLE,
}

Definition at line 608 of file tty_pts.c.

Referenced by pts_alloc(), and pts_alloc_external().