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/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 <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 ("$BSDSUniX$")
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_truncate (struct file *fp, off_t length, struct ucred *active_cred, 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, struct thread *td)
static int	ptsdev_close (struct file *fp, struct thread *td)
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

#define PTS_COMPAT

Definition at line 34 of file tty_pts.c.

#define PTS_EXTERNAL

Definition at line 36 of file tty_pts.c.

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

Definition at line 89 of file tty_pts.c.

Referenced by pts_kqops_read_event(), pts_kqops_write_event(), ptsdev_ioctl(), ptsdev_poll(), ptsdev_read(), ptsdev_write(), ptsdrv_close(), and ptsdrv_open().

#define PTS_LINUX

Definition at line 38 of file tty_pts.c.

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

Definition at line 88 of file tty_pts.c.

Referenced by ptsdev_ioctl(), ptsdev_poll(), and ptsdev_read().

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

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

static

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

Definition at line 719 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_softc::pts_unit, ptsdev_ops, racct_add(), racct_sub(), tty_alloc(), and tty_makedev().

Referenced by sys_posix_openpt().

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

Definition at line 772 of file tty_pts.c.

References chgptscnt(), crhold(), cv_init(), finit(), knlist_init_mtx(), lim_cur(), malloc(), 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, racct_add(), racct_sub(), tty_alloc(), and tty_makedev().

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static void pts_init ( void *  unused )

static

Definition at line 851 of file tty_pts.c.

References new_unrhdr().

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static void pts_kqops_read_detach ( struct knote *  kn )

static

Definition at line 444 of file tty_pts.c.

References knlist_remove(), and pts_softc::pts_outpoll.

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

static

Definition at line 454 of file tty_pts.c.

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

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static void pts_kqops_write_detach ( struct knote *  kn )

static

Definition at line 470 of file tty_pts.c.

References knlist_remove(), and pts_softc::pts_inpoll.

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

static

Definition at line 480 of file tty_pts.c.

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

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

static

Definition at line 571 of file tty_pts.c.

References tty_rel_gone(), and vnops.

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

static

Definition at line 264 of file tty_pts.c.

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

static

Definition at line 507 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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static int ptsdev_poll ( struct file *  fp, int  events, struct ucred *  active_cred, struct thread *  td  )

static

Definition at line 389 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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static int ptsdev_read ( struct file *  fp, struct uio *  uio, struct ucred *  active_cred, int  flags, struct thread *  td  )

static

Definition at line 109 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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static int ptsdev_stat ( struct file *  fp, struct stat *  sb, struct ucred *  active_cred, struct thread *  td  )

static

Definition at line 534 of file tty_pts.c.

References pts_softc::pts_cdev, and tty_udev().

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static int ptsdev_truncate ( struct file *  fp, off_t  length, struct ucred *  active_cred, struct thread *  td  )

static

Definition at line 256 of file tty_pts.c.

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

static

Definition at line 183 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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static void ptsdrv_close ( struct tty *  tp )

static

Definition at line 640 of file tty_pts.c.

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

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static void ptsdrv_free ( void *  softc )

static

Definition at line 679 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_softc::pts_unit, racct_sub_cred(), and seldrain().

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static void ptsdrv_inwakeup ( struct tty *  tp )

static

Definition at line 620 of file tty_pts.c.

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

Referenced by ptsdrv_close().

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static int ptsdrv_open ( struct tty *  tp )

static

Definition at line 630 of file tty_pts.c.

References PTS_FINISHED, and pts_softc::pts_flags.

static void ptsdrv_outwakeup ( struct tty *  tp )

static

Definition at line 610 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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static void ptsdrv_pktnotify ( struct tty *  tp, char  event  )

static

Definition at line 651 of file tty_pts.c.

References pts_softc::pts_pkt, and ptsdrv_outwakeup().

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

Definition at line 819 of file tty_pts.c.

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

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

Variable Documentation

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 705 of file tty_pts.c.

Referenced by pts_alloc(), and pts_alloc_external().

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 495 of file tty_pts.c.

Referenced by ptsdev_kqfilter().

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 500 of file tty_pts.c.

Referenced by ptsdev_kqfilter().

struct unrhdr* pts_pool

static

Definition at line 74 of file tty_pts.c.

struct fileops ptsdev_ops

static

Initial value:

= {
        .fo_read        = ptsdev_read,
        .fo_write       = ptsdev_write,
        .fo_truncate    = ptsdev_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_flags       = DFLAG_PASSABLE,
}

Definition at line 591 of file tty_pts.c.

Referenced by pts_alloc(), and pts_alloc_external().