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vt.h
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _LINUX_VT_H #define _LINUX_VT_H /* * These constants are also useful for user-level apps (e.g., VC * resizing). */ #define MIN_NR_CONSOLES 1 /* must be at least 1 */ #define MAX_NR_CONSOLES 63 /* serial lines start at 64 */ /* Note: the ioctl VT_GETSTATE does not work for consoles 16 and higher (since it returns a short) */ /* 0x56 is 'V', to avoid collision with termios and kd */ #define VT_OPENQRY 0x5600 /* find available vt */ struct vt_mode { char mode; /* vt mode */ char waitv; /* if set, hang on writes if not active */ short relsig; /* signal to raise on release req */ short acqsig; /* signal to raise on acquisition */ short frsig; /* unused (set to 0) */ }; #define VT_GETMODE 0x5601 /* get mode of active vt */ #define VT_SETMODE 0x5602 /* set mode of active vt */ #define VT_AUTO 0x00 /* auto vt switching */ #define VT_PROCESS 0x01 /* process controls switching */ #define VT_ACKACQ 0x02 /* acknowledge switch */ struct vt_stat { unsigned short v_active; /* active vt */ unsigned short v_signal; /* signal to send */ unsigned short v_state; /* vt bitmask */ }; #define VT_GETSTATE 0x5603 /* get global vt state info */ #define VT_SENDSIG 0x5604 /* signal to send to bitmask of vts */ #define VT_RELDISP 0x5605 /* release display */ #define VT_ACTIVATE 0x5606 /* make vt active */ #define VT_WAITACTIVE 0x5607 /* wait for vt active */ #define VT_DISALLOCATE 0x5608 /* free memory associated to vt */ struct vt_sizes { unsigned short v_rows; /* number of rows */ unsigned short v_cols; /* number of columns */ unsigned short v_scrollsize; /* number of lines of scrollback */ }; #define VT_RESIZE 0x5609 /* set kernel's idea of screensize */ struct vt_consize { unsigned short v_rows; /* number of rows */ unsigned short v_cols; /* number of columns */ unsigned short v_vlin; /* number of pixel rows on screen */ unsigned short v_clin; /* number of pixel rows per character */ unsigned short v_vcol; /* number of pixel columns on screen */ unsigned short v_ccol; /* number of pixel columns per character */ }; #define VT_RESIZEX 0x560A /* set kernel's idea of screensize + more */ #define VT_LOCKSWITCH 0x560B /* disallow vt switching */ #define VT_UNLOCKSWITCH 0x560C /* allow vt switching */ #define VT_GETHIFONTMASK 0x560D /* return hi font mask */ struct vt_event { unsigned int event; #define VT_EVENT_SWITCH 0x0001 /* Console switch */ #define VT_EVENT_BLANK 0x0002 /* Screen blank */ #define VT_EVENT_UNBLANK 0x0004 /* Screen unblank */ #define VT_EVENT_RESIZE 0x0008 /* Resize display */ #define VT_MAX_EVENT 0x000F unsigned int oldev; /* Old console */ unsigned int newev; /* New console (if changing) */ unsigned int pad[4]; /* Padding for expansion */ }; #define VT_WAITEVENT 0x560E /* Wait for an event */ struct vt_setactivate { unsigned int console; struct vt_mode mode; }; #define VT_SETACTIVATE 0x560F /* Activate and set the mode of a console */ #endif /* _LINUX_VT_H */