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Length: 3241 (0xca9)
Types: TextFile
Notes: UNIX file
Names: »vt.h«
└─⟦a6ab2eb36⟧ Bits:30004042/kconfig3.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦a6ab2eb36⟧ UNIX Filesystem
└─⟦this⟧ »kc/new/usr/include/sys/vt.h«
/*
* definitions for PC AT virtual terminal driver
*/
/*
* Copyrighted as an unpublished work.
* (c) Copyright 1986 INTERACTIVE Systems Corporation
* All rights reserved.
*
* RESTRICTED RIGHTS
*
* These programs are supplied under a license. They may be used,
* disclosed, and/or copied only as permitted under such license
* agreement. Any copy must contain the above copyright notice and
* this restricted rights notice. Use, copying, and/or disclosure
* of the programs is strictly prohibited unless otherwise provided
* in the license agreement.
*/
#ident "@(#)vt.h 1.5 - 88/01/18"
#define VTINDEX(dev) (((dev) >> 5) & 0x07)
#define VT_FORCE 1 /* flag to force a vt switch */
#define VT_NOFORCE 0 /* dont force a vt switch */
/*
* Bits in vtty flags word.
*/
#define VT_ACTIVE 0x0001 /* set if this is the active vt */
#define VT_PROCMOD 0x0002 /* set if vt has process control mode set */
#define VT_WAIT 0x0004 /* set if writes to hang if not active vt */
#define VT_HIDDEN 0x0008 /* set if vt on ring is to be skipped */
#define VT_WAITACT 0x0010 /* set if vt needs wakeup when switched to */
/*
* all vttys for a device should be circularly linked via the
* link field of the structure, active vttys are doubly circularly
* linked via the next and prev fields.
*/
struct vtty { /* virtual terminal structure */
struct vtty *link; /* next vtty on device */
struct vtty *prev; /* previous vtty in ring */
struct vtty *next; /* next vtty in ring */
struct vtty *switchto; /* vtty to be activated */
struct tty *tp; /* tty associated with this vtty */
caddr_t dsp; /* device specific info for this vtty */
struct proc *procp; /* ptr to process controlling this vtty */
short pid; /* pid of process controlling this vtty */
ushort flags; /* flags for this vtty */
char opencnt; /* number of opens on this vtty */
char vtno; /* vt index number of this vtty */
short relsig; /* signal to send to request release */
short acqsig; /* signal to send to signal acquisition */
short frsig; /* signal to send on forced removal */
int timeid; /* timeout id for this vtty */
int (*dsactivate)(); /* device specific activation routine */
int (*dsrefuse)(); /* device specific release refused routine */
int (*dsautomode)(); /* device specific switch to auto mode */
};
/*
* IOCTLs supported by the VT
*/
#define VTIOC ('v'<<8)
#define VT_OPENQRY (VTIOC|1) /* inquires if this vt already open */
#define VT_SETMODE (VTIOC|2) /* set vt into auto or process mode */
#define VT_GETMODE (VTIOC|3) /* returns mode vt is currently in */
#define VT_RELDISP (VTIOC|4) /* tells vt when display released */
#define VT_ACTIVATE (VTIOC|5) /* activates specified vt */
#define VT_WAITACTIVE (VTIOC|6) /* wait for vt to be activated */
struct vt_mode {
char mode; /* mode to set vt into */
char waitv; /* if != 0, vt hangs on writes when not active */
short relsig; /* signal to use for release request */
short acqsig; /* signal to use for display acquired */
short frsig; /* signal to use for forced release */
};
#define VT_AUTO 0 /* this vt's switching is automatic */
#define VT_PROCESS 1 /* this vt's switching controlled by process */
#define VT_ACKACQ 2 /* acquire acknowledge code */