1 #ifndef _LINUX_VT_H 2 #define _LINUX_VT_H 3 4 5 /* 6 * These constants are also useful for user-level apps (e.g., VC 7 * resizing). 8 */ 9 #define MIN_NR_CONSOLES 1 /* must be at least 1 */ 10 #define MAX_NR_CONSOLES 63 /* serial lines start at 64 */ 11 #define MAX_NR_USER_CONSOLES 63 /* must be root to allocate above this */ 12 /* Note: the ioctl VT_GETSTATE does not work for 13 consoles 16 and higher (since it returns a short) */ 14 15 /* 0x56 is 'V', to avoid collision with termios and kd */ 16 17 #define VT_OPENQRY 0x5600 /* find available vt */ 18 19 struct vt_mode { 20 char mode; /* vt mode */ 21 char waitv; /* if set, hang on writes if not active */ 22 short relsig; /* signal to raise on release req */ 23 short acqsig; /* signal to raise on acquisition */ 24 short frsig; /* unused (set to 0) */ 25 }; 26 #define VT_GETMODE 0x5601 /* get mode of active vt */ 27 #define VT_SETMODE 0x5602 /* set mode of active vt */ 28 #define VT_AUTO 0x00 /* auto vt switching */ 29 #define VT_PROCESS 0x01 /* process controls switching */ 30 #define VT_ACKACQ 0x02 /* acknowledge switch */ 31 32 struct vt_stat { 33 unsigned short v_active; /* active vt */ 34 unsigned short v_signal; /* signal to send */ 35 unsigned short v_state; /* vt bitmask */ 36 }; 37 #define VT_GETSTATE 0x5603 /* get global vt state info */ 38 #define VT_SENDSIG 0x5604 /* signal to send to bitmask of vts */ 39 40 #define VT_RELDISP 0x5605 /* release display */ 41 42 #define VT_ACTIVATE 0x5606 /* make vt active */ 43 #define VT_WAITACTIVE 0x5607 /* wait for vt active */ 44 #define VT_DISALLOCATE 0x5608 /* free memory associated to vt */ 45 46 struct vt_sizes { 47 unsigned short v_rows; /* number of rows */ 48 unsigned short v_cols; /* number of columns */ 49 unsigned short v_scrollsize; /* number of lines of scrollback */ 50 }; 51 #define VT_RESIZE 0x5609 /* set kernel's idea of screensize */ 52 53 struct vt_consize { 54 unsigned short v_rows; /* number of rows */ 55 unsigned short v_cols; /* number of columns */ 56 unsigned short v_vlin; /* number of pixel rows on screen */ 57 unsigned short v_clin; /* number of pixel rows per character */ 58 unsigned short v_vcol; /* number of pixel columns on screen */ 59 unsigned short v_ccol; /* number of pixel columns per character */ 60 }; 61 #define VT_RESIZEX 0x560A /* set kernel's idea of screensize + more */ 62 #define VT_LOCKSWITCH 0x560B /* disallow vt switching */ 63 #define VT_UNLOCKSWITCH 0x560C /* allow vt switching */ 64 #define VT_GETHIFONTMASK 0x560D /* return hi font mask */ 65 66 struct vt_event { 67 unsigned int event; 68 #define VT_EVENT_SWITCH 0x0001 /* Console switch */ 69 #define VT_EVENT_BLANK 0x0002 /* Screen blank */ 70 #define VT_EVENT_UNBLANK 0x0004 /* Screen unblank */ 71 #define VT_EVENT_RESIZE 0x0008 /* Resize display */ 72 #define VT_MAX_EVENT 0x000F 73 unsigned int oldev; /* Old console */ 74 unsigned int newev; /* New console (if changing) */ 75 unsigned int pad[4]; /* Padding for expansion */ 76 }; 77 78 #define VT_WAITEVENT 0x560E /* Wait for an event */ 79 80 struct vt_setactivate { 81 unsigned int console; 82 struct vt_mode mode; 83 }; 84 85 #define VT_SETACTIVATE 0x560F /* Activate and set the mode of a console */ 86 87 #ifdef __KERNEL__ 88 89 #ifdef CONFIG_VT_CONSOLE 90 91 extern int vt_kmsg_redirect(int new); 92 93 #else 94 vt_kmsg_redirect(int new)95static inline int vt_kmsg_redirect(int new) 96 { 97 return 0; 98 } 99 100 #endif 101 102 #endif /* __KERNEL__ */ 103 104 #define vt_get_kmsg_redirect() vt_kmsg_redirect(-1) 105 106 #endif /* _LINUX_VT_H */ 107