include/linux/vt.h

   1 #ifndef _LINUX_VT_H
   2 #define _LINUX_VT_H
   3
   4 #ifdef __KERNEL__
   5 struct notifier_block;
   6
   7 struct vt_notifier_param {
   8         struct vc_data *vc;     /* VC on which the update happened */
   9         unsigned int c;         /* Printed char */
  10 };
  11
  12 extern int register_vt_notifier(struct notifier_block *nb);
  13 extern int unregister_vt_notifier(struct notifier_block *nb);
  14 #endif
  15
  16 /*
  17  * These constants are also useful for user-level apps (e.g., VC
  18  * resizing).
  19  */
  20 #define MIN_NR_CONSOLES 1       /* must be at least 1 */
  21 #define MAX_NR_CONSOLES 63      /* serial lines start at 64 */
  22 #define MAX_NR_USER_CONSOLES 63 /* must be root to allocate above this */
  23                 /* Note: the ioctl VT_GETSTATE does not work for
  24                    consoles 16 and higher (since it returns a short) */
  25
  26 /* 0x56 is 'V', to avoid collision with termios and kd */
  27
  28 #define VT_OPENQRY      0x5600  /* find available vt */
  29
  30 struct vt_mode {
  31         char mode;              /* vt mode */
  32         char waitv;             /* if set, hang on writes if not active */
  33         short relsig;           /* signal to raise on release req */
  34         short acqsig;           /* signal to raise on acquisition */
  35         short frsig;            /* unused (set to 0) */
  36 };
  37 #define VT_GETMODE      0x5601  /* get mode of active vt */
  38 #define VT_SETMODE      0x5602  /* set mode of active vt */
  39 #define         VT_AUTO         0x00    /* auto vt switching */
  40 #define         VT_PROCESS      0x01    /* process controls switching */
  41 #define         VT_ACKACQ       0x02    /* acknowledge switch */
  42
  43 struct vt_stat {
  44         unsigned short v_active;        /* active vt */
  45         unsigned short v_signal;        /* signal to send */
  46         unsigned short v_state;         /* vt bitmask */
  47 };
  48 #define VT_GETSTATE     0x5603  /* get global vt state info */
  49 #define VT_SENDSIG      0x5604  /* signal to send to bitmask of vts */
  50
  51 #define VT_RELDISP      0x5605  /* release display */
  52
  53 #define VT_ACTIVATE     0x5606  /* make vt active */
  54 #define VT_WAITACTIVE   0x5607  /* wait for vt active */
  55 #define VT_DISALLOCATE  0x5608  /* free memory associated to vt */
  56
  57 struct vt_sizes {
  58         unsigned short v_rows;          /* number of rows */
  59         unsigned short v_cols;          /* number of columns */
  60         unsigned short v_scrollsize;    /* number of lines of scrollback */
  61 };
  62 #define VT_RESIZE       0x5609  /* set kernel's idea of screensize */
  63
  64 struct vt_consize {
  65         unsigned short v_rows;  /* number of rows */
  66         unsigned short v_cols;  /* number of columns */
  67         unsigned short v_vlin;  /* number of pixel rows on screen */
  68         unsigned short v_clin;  /* number of pixel rows per character */
  69         unsigned short v_vcol;  /* number of pixel columns on screen */
  70         unsigned short v_ccol;  /* number of pixel columns per character */
  71 };
  72 #define VT_RESIZEX      0x560A  /* set kernel's idea of screensize + more */
  73 #define VT_LOCKSWITCH   0x560B  /* disallow vt switching */
  74 #define VT_UNLOCKSWITCH 0x560C  /* allow vt switching */
  75 #define VT_GETHIFONTMASK 0x560D  /* return hi font mask */
  76
  77 #endif /* _LINUX_VT_H */