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 */ 78