uapi/linux/vt.h

0001 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
0002 #ifndef _UAPI_LINUX_VT_H
0003 #define _UAPI_LINUX_VT_H
0004
0005
0006 /*
0007  * These constants are also useful for user-level apps (e.g., VC
0008  * resizing).
0009  */
0010 #define MIN_NR_CONSOLES 1       /* must be at least 1 */
0011 #define MAX_NR_CONSOLES 63  /* serial lines start at 64 */
0012         /* Note: the ioctl VT_GETSTATE does not work for
0013            consoles 16 and higher (since it returns a short) */
0014
0015 /* 0x56 is 'V', to avoid collision with termios and kd */
0016
0017 #define VT_OPENQRY  0x5600  /* find available vt */
0018
0019 struct vt_mode {
0020     char mode;      /* vt mode */
0021     char waitv;     /* if set, hang on writes if not active */
0022     short relsig;       /* signal to raise on release req */
0023     short acqsig;       /* signal to raise on acquisition */
0024     short frsig;        /* unused (set to 0) */
0025 };
0026 #define VT_GETMODE  0x5601  /* get mode of active vt */
0027 #define VT_SETMODE  0x5602  /* set mode of active vt */
0028 #define     VT_AUTO     0x00    /* auto vt switching */
0029 #define     VT_PROCESS  0x01    /* process controls switching */
0030 #define     VT_ACKACQ   0x02    /* acknowledge switch */
0031
0032 struct vt_stat {
0033     unsigned short v_active;    /* active vt */
0034     unsigned short v_signal;    /* signal to send */
0035     unsigned short v_state;     /* vt bitmask */
0036 };
0037 #define VT_GETSTATE 0x5603  /* get global vt state info */
0038 #define VT_SENDSIG  0x5604  /* signal to send to bitmask of vts */
0039
0040 #define VT_RELDISP  0x5605  /* release display */
0041
0042 #define VT_ACTIVATE 0x5606  /* make vt active */
0043 #define VT_WAITACTIVE   0x5607  /* wait for vt active */
0044 #define VT_DISALLOCATE  0x5608  /* free memory associated to vt */
0045
0046 struct vt_sizes {
0047     unsigned short v_rows;      /* number of rows */
0048     unsigned short v_cols;      /* number of columns */
0049     unsigned short v_scrollsize;    /* number of lines of scrollback */
0050 };
0051 #define VT_RESIZE   0x5609  /* set kernel's idea of screensize */
0052
0053 struct vt_consize {
0054     unsigned short v_rows;  /* number of rows */
0055     unsigned short v_cols;  /* number of columns */
0056     unsigned short v_vlin;  /* number of pixel rows on screen */
0057     unsigned short v_clin;  /* number of pixel rows per character */
0058     unsigned short v_vcol;  /* number of pixel columns on screen */
0059     unsigned short v_ccol;  /* number of pixel columns per character */
0060 };
0061 #define VT_RESIZEX      0x560A  /* set kernel's idea of screensize + more */
0062 #define VT_LOCKSWITCH   0x560B  /* disallow vt switching */
0063 #define VT_UNLOCKSWITCH 0x560C  /* allow vt switching */
0064 #define VT_GETHIFONTMASK 0x560D  /* return hi font mask */
0065
0066 struct vt_event {
0067     unsigned int event;
0068 #define VT_EVENT_SWITCH     0x0001  /* Console switch */
0069 #define VT_EVENT_BLANK      0x0002  /* Screen blank */
0070 #define VT_EVENT_UNBLANK    0x0004  /* Screen unblank */
0071 #define VT_EVENT_RESIZE     0x0008  /* Resize display */
0072 #define VT_MAX_EVENT        0x000F
0073     unsigned int oldev;     /* Old console */
0074     unsigned int newev;     /* New console (if changing) */
0075     unsigned int pad[4];        /* Padding for expansion */
0076 };
0077
0078 #define VT_WAITEVENT    0x560E  /* Wait for an event */
0079
0080 struct vt_setactivate {
0081     unsigned int console;
0082     struct vt_mode mode;
0083 };
0084
0085 #define VT_SETACTIVATE  0x560F  /* Activate and set the mode of a console */
0086
0087 #endif /* _UAPI_LINUX_VT_H */