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62 |
marcus.erl |
/*
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* linux/drivers/char/vt.c
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*/
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/*
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* Hopefully this will be a rather complete VT102 implementation.
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*
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* Beeping thanks to John T Kohl.
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*
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* Virtual Consoles, Screen Blanking, Screen Dumping, Color, Graphics
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* Chars, and VT100 enhancements by Peter MacDonald.
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*
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* Copy and paste function by Andrew Haylett,
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* some enhancements by Alessandro Rubini.
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*
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* Code to check for different video-cards mostly by Galen Hunt,
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* <g-hunt@ee.utah.edu>
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*
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* Rudimentary ISO 10646/Unicode/UTF-8 character set support by
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* Markus Kuhn, <mskuhn@immd4.informatik.uni-erlangen.de>.
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*
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* Dynamic allocation of consoles, aeb@cwi.nl, May 1994
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* Resizing of consoles, aeb, 940926
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*
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* Code for xterm like mouse click reporting by Peter Orbaek 20-Jul-94
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* <poe@daimi.aau.dk>
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*
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* User-defined bell sound, new setterm control sequences and printk
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* redirection by Martin Mares <mj@k332.feld.cvut.cz> 19-Nov-95
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*
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* APM screenblank bug fixed Takashi Manabe <manabe@roy.dsl.tutics.tut.jp>
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*
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* Merge with the abstract console driver by Geert Uytterhoeven
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* <geert@linux-m68k.org>, Jan 1997.
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*
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* Original m68k console driver modifications by
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*
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* - Arno Griffioen <arno@usn.nl>
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* - David Carter <carter@cs.bris.ac.uk>
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*
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* The abstract console driver provides a generic interface for a text
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* console. It supports VGA text mode, frame buffer based graphical consoles
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* and special graphics processors that are only accessible through some
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* registers (e.g. a TMS340x0 GSP).
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*
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* The interface to the hardware is specified using a special structure
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* (struct consw) which contains function pointers to console operations
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* (see <linux/console.h> for more information).
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*
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* Support for changeable cursor shape
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* by Pavel Machek <pavel@atrey.karlin.mff.cuni.cz>, August 1997
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*
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* Ported to i386 and con_scrolldelta fixed
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* by Emmanuel Marty <core@ggi-project.org>, April 1998
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*
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* Resurrected character buffers in videoram plus lots of other trickery
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* by Martin Mares <mj@atrey.karlin.mff.cuni.cz>, July 1998
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*
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* Removed old-style timers, introduced console_timer, made timer
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* deletion SMP-safe. 17Jun00, Andrew Morton <andrewm@uow.edu.au>
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*
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* Removed console_lock, enabled interrupts across all console operations
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* 13 March 2001, Andrew Morton
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*
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* Fixed UTF-8 mode so alternate charset modes always work according
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* to control sequences interpreted in do_con_trol function
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* preserving backward VT100 semigraphics compatibility,
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* malformed UTF sequences represented as sequences of replacement glyphs,
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* original codes or '?' as a last resort if replacement glyph is undefined
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* by Adam Tla/lka <atlka@pg.gda.pl>, Aug 2006
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/kd.h>
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#include <linux/slab.h>
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#include <linux/major.h>
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#include <linux/mm.h>
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#include <linux/console.h>
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#include <linux/init.h>
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#include <linux/mutex.h>
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#include <linux/vt_kern.h>
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#include <linux/selection.h>
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#include <linux/tiocl.h>
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#include <linux/kbd_kern.h>
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#include <linux/consolemap.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/workqueue.h>
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#include <linux/bootmem.h>
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#include <linux/pm.h>
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#include <linux/font.h>
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#include <linux/bitops.h>
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#include <linux/notifier.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include <asm/uaccess.h>
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#define MAX_NR_CON_DRIVER 16
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#define CON_DRIVER_FLAG_MODULE 1
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#define CON_DRIVER_FLAG_INIT 2
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#define CON_DRIVER_FLAG_ATTR 4
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struct con_driver {
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const struct consw *con;
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const char *desc;
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struct device *dev;
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int node;
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int first;
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int last;
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int flag;
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};
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static struct con_driver registered_con_driver[MAX_NR_CON_DRIVER];
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const struct consw *conswitchp;
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/* A bitmap for codes <32. A bit of 1 indicates that the code
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* corresponding to that bit number invokes some special action
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* (such as cursor movement) and should not be displayed as a
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* glyph unless the disp_ctrl mode is explicitly enabled.
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*/
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#define CTRL_ACTION 0x0d00ff81
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#define CTRL_ALWAYS 0x0800f501 /* Cannot be overridden by disp_ctrl */
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| 135 |
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/*
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* Here is the default bell parameters: 750HZ, 1/8th of a second
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*/
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#define DEFAULT_BELL_PITCH 750
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#define DEFAULT_BELL_DURATION (HZ/8)
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| 141 |
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struct vc vc_cons [MAX_NR_CONSOLES];
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#ifndef VT_SINGLE_DRIVER
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static const struct consw *con_driver_map[MAX_NR_CONSOLES];
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#endif
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static int con_open(struct tty_struct *, struct file *);
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static void vc_init(struct vc_data *vc, unsigned int rows,
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unsigned int cols, int do_clear);
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static void gotoxy(struct vc_data *vc, int new_x, int new_y);
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static void save_cur(struct vc_data *vc);
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static void reset_terminal(struct vc_data *vc, int do_clear);
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static void con_flush_chars(struct tty_struct *tty);
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static int set_vesa_blanking(char __user *p);
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static void set_cursor(struct vc_data *vc);
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static void hide_cursor(struct vc_data *vc);
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static void console_callback(struct work_struct *ignored);
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static void blank_screen_t(unsigned long dummy);
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static void set_palette(struct vc_data *vc);
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static int printable; /* Is console ready for printing? */
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int default_utf8 = true;
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module_param(default_utf8, int, S_IRUGO | S_IWUSR);
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/*
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* ignore_poke: don't unblank the screen when things are typed. This is
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* mainly for the privacy of braille terminal users.
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*/
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static int ignore_poke;
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int do_poke_blanked_console;
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int console_blanked;
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static int vesa_blank_mode; /* 0:none 1:suspendV 2:suspendH 3:powerdown */
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static int blankinterval = 10*60*HZ;
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static int vesa_off_interval;
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| 178 |
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static DECLARE_WORK(console_work, console_callback);
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/*
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* fg_console is the current virtual console,
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* last_console is the last used one,
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* want_console is the console we want to switch to,
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* kmsg_redirect is the console for kernel messages,
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*/
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int fg_console;
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int last_console;
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int want_console = -1;
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int kmsg_redirect;
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| 191 |
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/*
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* For each existing display, we have a pointer to console currently visible
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* on that display, allowing consoles other than fg_console to be refreshed
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* appropriately. Unless the low-level driver supplies its own display_fg
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* variable, we use this one for the "master display".
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*/
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static struct vc_data *master_display_fg;
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| 199 |
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/*
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* Unfortunately, we need to delay tty echo when we're currently writing to the
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* console since the code is (and always was) not re-entrant, so we schedule
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* all flip requests to process context with schedule-task() and run it from
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* console_callback().
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*/
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/*
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* For the same reason, we defer scrollback to the console callback.
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*/
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static int scrollback_delta;
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| 211 |
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/*
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* Hook so that the power management routines can (un)blank
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* the console on our behalf.
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*/
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int (*console_blank_hook)(int);
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| 217 |
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static DEFINE_TIMER(console_timer, blank_screen_t, 0, 0);
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static int blank_state;
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static int blank_timer_expired;
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enum {
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blank_off = 0,
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blank_normal_wait,
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blank_vesa_wait,
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};
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| 226 |
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/*
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* Notifier list for console events.
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*/
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static ATOMIC_NOTIFIER_HEAD(vt_notifier_list);
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| 231 |
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int register_vt_notifier(struct notifier_block *nb)
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{
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return atomic_notifier_chain_register(&vt_notifier_list, nb);
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}
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EXPORT_SYMBOL_GPL(register_vt_notifier);
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int unregister_vt_notifier(struct notifier_block *nb)
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{
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| 239 |
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return atomic_notifier_chain_unregister(&vt_notifier_list, nb);
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}
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| 241 |
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EXPORT_SYMBOL_GPL(unregister_vt_notifier);
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| 242 |
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| 243 |
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static void notify_write(struct vc_data *vc, unsigned int unicode)
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{
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| 245 |
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struct vt_notifier_param param = { .vc = vc, unicode = unicode };
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| 246 |
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atomic_notifier_call_chain(&vt_notifier_list, VT_WRITE, ¶m);
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| 247 |
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}
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| 248 |
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| 249 |
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static void notify_update(struct vc_data *vc)
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{
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| 251 |
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struct vt_notifier_param param = { .vc = vc };
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| 252 |
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atomic_notifier_call_chain(&vt_notifier_list, VT_UPDATE, ¶m);
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| 253 |
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}
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| 254 |
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| 255 |
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/*
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| 256 |
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* Low-Level Functions
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| 257 |
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*/
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| 258 |
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| 259 |
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#define IS_FG(vc) ((vc)->vc_num == fg_console)
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| 260 |
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| 261 |
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#ifdef VT_BUF_VRAM_ONLY
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| 262 |
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#define DO_UPDATE(vc) 0
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| 263 |
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#else
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| 264 |
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#define DO_UPDATE(vc) CON_IS_VISIBLE(vc)
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| 265 |
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#endif
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| 266 |
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| 267 |
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static inline unsigned short *screenpos(struct vc_data *vc, int offset, int viewed)
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| 268 |
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{
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| 269 |
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unsigned short *p;
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| 270 |
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| 271 |
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if (!viewed)
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| 272 |
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p = (unsigned short *)(vc->vc_origin + offset);
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| 273 |
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else if (!vc->vc_sw->con_screen_pos)
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| 274 |
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p = (unsigned short *)(vc->vc_visible_origin + offset);
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| 275 |
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else
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| 276 |
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p = vc->vc_sw->con_screen_pos(vc, offset);
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| 277 |
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return p;
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| 278 |
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}
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| 279 |
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| 280 |
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static inline void scrolldelta(int lines)
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| 281 |
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{
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| 282 |
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scrollback_delta += lines;
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| 283 |
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schedule_console_callback();
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| 284 |
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}
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| 285 |
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| 286 |
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void schedule_console_callback(void)
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| 287 |
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{
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| 288 |
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schedule_work(&console_work);
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| 289 |
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}
|
| 290 |
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| 291 |
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static void scrup(struct vc_data *vc, unsigned int t, unsigned int b, int nr)
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| 292 |
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{
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| 293 |
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unsigned short *d, *s;
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| 294 |
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| 295 |
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if (t+nr >= b)
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| 296 |
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nr = b - t - 1;
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| 297 |
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if (b > vc->vc_rows || t >= b || nr < 1)
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| 298 |
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return;
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| 299 |
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if (CON_IS_VISIBLE(vc) && vc->vc_sw->con_scroll(vc, t, b, SM_UP, nr))
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| 300 |
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return;
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| 301 |
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d = (unsigned short *)(vc->vc_origin + vc->vc_size_row * t);
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| 302 |
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s = (unsigned short *)(vc->vc_origin + vc->vc_size_row * (t + nr));
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| 303 |
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scr_memmovew(d, s, (b - t - nr) * vc->vc_size_row);
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| 304 |
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scr_memsetw(d + (b - t - nr) * vc->vc_cols, vc->vc_video_erase_char,
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| 305 |
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vc->vc_size_row * nr);
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| 306 |
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}
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| 307 |
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| 308 |
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static void scrdown(struct vc_data *vc, unsigned int t, unsigned int b, int nr)
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| 309 |
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{
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| 310 |
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unsigned short *s;
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| 311 |
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unsigned int step;
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| 312 |
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| 313 |
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if (t+nr >= b)
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| 314 |
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nr = b - t - 1;
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| 315 |
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if (b > vc->vc_rows || t >= b || nr < 1)
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| 316 |
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return;
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| 317 |
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if (CON_IS_VISIBLE(vc) && vc->vc_sw->con_scroll(vc, t, b, SM_DOWN, nr))
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| 318 |
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return;
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| 319 |
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s = (unsigned short *)(vc->vc_origin + vc->vc_size_row * t);
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| 320 |
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step = vc->vc_cols * nr;
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| 321 |
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scr_memmovew(s + step, s, (b - t - nr) * vc->vc_size_row);
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| 322 |
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scr_memsetw(s, vc->vc_video_erase_char, 2 * step);
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| 323 |
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}
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| 324 |
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| 325 |
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static void do_update_region(struct vc_data *vc, unsigned long start, int count)
|
| 326 |
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{
|
| 327 |
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#ifndef VT_BUF_VRAM_ONLY
|
| 328 |
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unsigned int xx, yy, offset;
|
| 329 |
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u16 *p;
|
| 330 |
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| 331 |
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p = (u16 *) start;
|
| 332 |
|
|
if (!vc->vc_sw->con_getxy) {
|
| 333 |
|
|
offset = (start - vc->vc_origin) / 2;
|
| 334 |
|
|
xx = offset % vc->vc_cols;
|
| 335 |
|
|
yy = offset / vc->vc_cols;
|
| 336 |
|
|
} else {
|
| 337 |
|
|
int nxx, nyy;
|
| 338 |
|
|
start = vc->vc_sw->con_getxy(vc, start, &nxx, &nyy);
|
| 339 |
|
|
xx = nxx; yy = nyy;
|
| 340 |
|
|
}
|
| 341 |
|
|
for(;;) {
|
| 342 |
|
|
u16 attrib = scr_readw(p) & 0xff00;
|
| 343 |
|
|
int startx = xx;
|
| 344 |
|
|
u16 *q = p;
|
| 345 |
|
|
while (xx < vc->vc_cols && count) {
|
| 346 |
|
|
if (attrib != (scr_readw(p) & 0xff00)) {
|
| 347 |
|
|
if (p > q)
|
| 348 |
|
|
vc->vc_sw->con_putcs(vc, q, p-q, yy, startx);
|
| 349 |
|
|
startx = xx;
|
| 350 |
|
|
q = p;
|
| 351 |
|
|
attrib = scr_readw(p) & 0xff00;
|
| 352 |
|
|
}
|
| 353 |
|
|
p++;
|
| 354 |
|
|
xx++;
|
| 355 |
|
|
count--;
|
| 356 |
|
|
}
|
| 357 |
|
|
if (p > q)
|
| 358 |
|
|
vc->vc_sw->con_putcs(vc, q, p-q, yy, startx);
|
| 359 |
|
|
if (!count)
|
| 360 |
|
|
break;
|
| 361 |
|
|
xx = 0;
|
| 362 |
|
|
yy++;
|
| 363 |
|
|
if (vc->vc_sw->con_getxy) {
|
| 364 |
|
|
p = (u16 *)start;
|
| 365 |
|
|
start = vc->vc_sw->con_getxy(vc, start, NULL, NULL);
|
| 366 |
|
|
}
|
| 367 |
|
|
}
|
| 368 |
|
|
#endif
|
| 369 |
|
|
}
|
| 370 |
|
|
|
| 371 |
|
|
void update_region(struct vc_data *vc, unsigned long start, int count)
|
| 372 |
|
|
{
|
| 373 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 374 |
|
|
|
| 375 |
|
|
if (DO_UPDATE(vc)) {
|
| 376 |
|
|
hide_cursor(vc);
|
| 377 |
|
|
do_update_region(vc, start, count);
|
| 378 |
|
|
set_cursor(vc);
|
| 379 |
|
|
}
|
| 380 |
|
|
}
|
| 381 |
|
|
|
| 382 |
|
|
/* Structure of attributes is hardware-dependent */
|
| 383 |
|
|
|
| 384 |
|
|
static u8 build_attr(struct vc_data *vc, u8 _color, u8 _intensity, u8 _blink,
|
| 385 |
|
|
u8 _underline, u8 _reverse, u8 _italic)
|
| 386 |
|
|
{
|
| 387 |
|
|
if (vc->vc_sw->con_build_attr)
|
| 388 |
|
|
return vc->vc_sw->con_build_attr(vc, _color, _intensity,
|
| 389 |
|
|
_blink, _underline, _reverse, _italic);
|
| 390 |
|
|
|
| 391 |
|
|
#ifndef VT_BUF_VRAM_ONLY
|
| 392 |
|
|
/*
|
| 393 |
|
|
* ++roman: I completely changed the attribute format for monochrome
|
| 394 |
|
|
* mode (!can_do_color). The formerly used MDA (monochrome display
|
| 395 |
|
|
* adapter) format didn't allow the combination of certain effects.
|
| 396 |
|
|
* Now the attribute is just a bit vector:
|
| 397 |
|
|
* Bit 0..1: intensity (0..2)
|
| 398 |
|
|
* Bit 2 : underline
|
| 399 |
|
|
* Bit 3 : reverse
|
| 400 |
|
|
* Bit 7 : blink
|
| 401 |
|
|
*/
|
| 402 |
|
|
{
|
| 403 |
|
|
u8 a = vc->vc_color;
|
| 404 |
|
|
if (!vc->vc_can_do_color)
|
| 405 |
|
|
return _intensity |
|
| 406 |
|
|
(_italic ? 2 : 0) |
|
| 407 |
|
|
(_underline ? 4 : 0) |
|
| 408 |
|
|
(_reverse ? 8 : 0) |
|
| 409 |
|
|
(_blink ? 0x80 : 0);
|
| 410 |
|
|
if (_italic)
|
| 411 |
|
|
a = (a & 0xF0) | vc->vc_itcolor;
|
| 412 |
|
|
else if (_underline)
|
| 413 |
|
|
a = (a & 0xf0) | vc->vc_ulcolor;
|
| 414 |
|
|
else if (_intensity == 0)
|
| 415 |
|
|
a = (a & 0xf0) | vc->vc_ulcolor;
|
| 416 |
|
|
if (_reverse)
|
| 417 |
|
|
a = ((a) & 0x88) | ((((a) >> 4) | ((a) << 4)) & 0x77);
|
| 418 |
|
|
if (_blink)
|
| 419 |
|
|
a ^= 0x80;
|
| 420 |
|
|
if (_intensity == 2)
|
| 421 |
|
|
a ^= 0x08;
|
| 422 |
|
|
if (vc->vc_hi_font_mask == 0x100)
|
| 423 |
|
|
a <<= 1;
|
| 424 |
|
|
return a;
|
| 425 |
|
|
}
|
| 426 |
|
|
#else
|
| 427 |
|
|
return 0;
|
| 428 |
|
|
#endif
|
| 429 |
|
|
}
|
| 430 |
|
|
|
| 431 |
|
|
static void update_attr(struct vc_data *vc)
|
| 432 |
|
|
{
|
| 433 |
|
|
vc->vc_attr = build_attr(vc, vc->vc_color, vc->vc_intensity,
|
| 434 |
|
|
vc->vc_blink, vc->vc_underline,
|
| 435 |
|
|
vc->vc_reverse ^ vc->vc_decscnm, vc->vc_italic);
|
| 436 |
|
|
vc->vc_video_erase_char = (build_attr(vc, vc->vc_color, 1, vc->vc_blink, 0, vc->vc_decscnm, 0) << 8) | ' ';
|
| 437 |
|
|
}
|
| 438 |
|
|
|
| 439 |
|
|
/* Note: inverting the screen twice should revert to the original state */
|
| 440 |
|
|
void invert_screen(struct vc_data *vc, int offset, int count, int viewed)
|
| 441 |
|
|
{
|
| 442 |
|
|
unsigned short *p;
|
| 443 |
|
|
|
| 444 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 445 |
|
|
|
| 446 |
|
|
count /= 2;
|
| 447 |
|
|
p = screenpos(vc, offset, viewed);
|
| 448 |
|
|
if (vc->vc_sw->con_invert_region)
|
| 449 |
|
|
vc->vc_sw->con_invert_region(vc, p, count);
|
| 450 |
|
|
#ifndef VT_BUF_VRAM_ONLY
|
| 451 |
|
|
else {
|
| 452 |
|
|
u16 *q = p;
|
| 453 |
|
|
int cnt = count;
|
| 454 |
|
|
u16 a;
|
| 455 |
|
|
|
| 456 |
|
|
if (!vc->vc_can_do_color) {
|
| 457 |
|
|
while (cnt--) {
|
| 458 |
|
|
a = scr_readw(q);
|
| 459 |
|
|
a ^= 0x0800;
|
| 460 |
|
|
scr_writew(a, q);
|
| 461 |
|
|
q++;
|
| 462 |
|
|
}
|
| 463 |
|
|
} else if (vc->vc_hi_font_mask == 0x100) {
|
| 464 |
|
|
while (cnt--) {
|
| 465 |
|
|
a = scr_readw(q);
|
| 466 |
|
|
a = ((a) & 0x11ff) | (((a) & 0xe000) >> 4) | (((a) & 0x0e00) << 4);
|
| 467 |
|
|
scr_writew(a, q);
|
| 468 |
|
|
q++;
|
| 469 |
|
|
}
|
| 470 |
|
|
} else {
|
| 471 |
|
|
while (cnt--) {
|
| 472 |
|
|
a = scr_readw(q);
|
| 473 |
|
|
a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | (((a) & 0x0700) << 4);
|
| 474 |
|
|
scr_writew(a, q);
|
| 475 |
|
|
q++;
|
| 476 |
|
|
}
|
| 477 |
|
|
}
|
| 478 |
|
|
}
|
| 479 |
|
|
#endif
|
| 480 |
|
|
if (DO_UPDATE(vc))
|
| 481 |
|
|
do_update_region(vc, (unsigned long) p, count);
|
| 482 |
|
|
}
|
| 483 |
|
|
|
| 484 |
|
|
/* used by selection: complement pointer position */
|
| 485 |
|
|
void complement_pos(struct vc_data *vc, int offset)
|
| 486 |
|
|
{
|
| 487 |
|
|
static int old_offset = -1;
|
| 488 |
|
|
static unsigned short old;
|
| 489 |
|
|
static unsigned short oldx, oldy;
|
| 490 |
|
|
|
| 491 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 492 |
|
|
|
| 493 |
|
|
if (old_offset != -1 && old_offset >= 0 &&
|
| 494 |
|
|
old_offset < vc->vc_screenbuf_size) {
|
| 495 |
|
|
scr_writew(old, screenpos(vc, old_offset, 1));
|
| 496 |
|
|
if (DO_UPDATE(vc))
|
| 497 |
|
|
vc->vc_sw->con_putc(vc, old, oldy, oldx);
|
| 498 |
|
|
}
|
| 499 |
|
|
|
| 500 |
|
|
old_offset = offset;
|
| 501 |
|
|
|
| 502 |
|
|
if (offset != -1 && offset >= 0 &&
|
| 503 |
|
|
offset < vc->vc_screenbuf_size) {
|
| 504 |
|
|
unsigned short new;
|
| 505 |
|
|
unsigned short *p;
|
| 506 |
|
|
p = screenpos(vc, offset, 1);
|
| 507 |
|
|
old = scr_readw(p);
|
| 508 |
|
|
new = old ^ vc->vc_complement_mask;
|
| 509 |
|
|
scr_writew(new, p);
|
| 510 |
|
|
if (DO_UPDATE(vc)) {
|
| 511 |
|
|
oldx = (offset >> 1) % vc->vc_cols;
|
| 512 |
|
|
oldy = (offset >> 1) / vc->vc_cols;
|
| 513 |
|
|
vc->vc_sw->con_putc(vc, new, oldy, oldx);
|
| 514 |
|
|
}
|
| 515 |
|
|
}
|
| 516 |
|
|
|
| 517 |
|
|
}
|
| 518 |
|
|
|
| 519 |
|
|
static void insert_char(struct vc_data *vc, unsigned int nr)
|
| 520 |
|
|
{
|
| 521 |
|
|
unsigned short *p, *q = (unsigned short *)vc->vc_pos;
|
| 522 |
|
|
|
| 523 |
|
|
p = q + vc->vc_cols - nr - vc->vc_x;
|
| 524 |
|
|
while (--p >= q)
|
| 525 |
|
|
scr_writew(scr_readw(p), p + nr);
|
| 526 |
|
|
scr_memsetw(q, vc->vc_video_erase_char, nr * 2);
|
| 527 |
|
|
vc->vc_need_wrap = 0;
|
| 528 |
|
|
if (DO_UPDATE(vc)) {
|
| 529 |
|
|
unsigned short oldattr = vc->vc_attr;
|
| 530 |
|
|
vc->vc_sw->con_bmove(vc, vc->vc_y, vc->vc_x, vc->vc_y, vc->vc_x + nr, 1,
|
| 531 |
|
|
vc->vc_cols - vc->vc_x - nr);
|
| 532 |
|
|
vc->vc_attr = vc->vc_video_erase_char >> 8;
|
| 533 |
|
|
while (nr--)
|
| 534 |
|
|
vc->vc_sw->con_putc(vc, vc->vc_video_erase_char, vc->vc_y, vc->vc_x + nr);
|
| 535 |
|
|
vc->vc_attr = oldattr;
|
| 536 |
|
|
}
|
| 537 |
|
|
}
|
| 538 |
|
|
|
| 539 |
|
|
static void delete_char(struct vc_data *vc, unsigned int nr)
|
| 540 |
|
|
{
|
| 541 |
|
|
unsigned int i = vc->vc_x;
|
| 542 |
|
|
unsigned short *p = (unsigned short *)vc->vc_pos;
|
| 543 |
|
|
|
| 544 |
|
|
while (++i <= vc->vc_cols - nr) {
|
| 545 |
|
|
scr_writew(scr_readw(p+nr), p);
|
| 546 |
|
|
p++;
|
| 547 |
|
|
}
|
| 548 |
|
|
scr_memsetw(p, vc->vc_video_erase_char, nr * 2);
|
| 549 |
|
|
vc->vc_need_wrap = 0;
|
| 550 |
|
|
if (DO_UPDATE(vc)) {
|
| 551 |
|
|
unsigned short oldattr = vc->vc_attr;
|
| 552 |
|
|
vc->vc_sw->con_bmove(vc, vc->vc_y, vc->vc_x + nr, vc->vc_y, vc->vc_x, 1,
|
| 553 |
|
|
vc->vc_cols - vc->vc_x - nr);
|
| 554 |
|
|
vc->vc_attr = vc->vc_video_erase_char >> 8;
|
| 555 |
|
|
while (nr--)
|
| 556 |
|
|
vc->vc_sw->con_putc(vc, vc->vc_video_erase_char, vc->vc_y,
|
| 557 |
|
|
vc->vc_cols - 1 - nr);
|
| 558 |
|
|
vc->vc_attr = oldattr;
|
| 559 |
|
|
}
|
| 560 |
|
|
}
|
| 561 |
|
|
|
| 562 |
|
|
static int softcursor_original;
|
| 563 |
|
|
|
| 564 |
|
|
static void add_softcursor(struct vc_data *vc)
|
| 565 |
|
|
{
|
| 566 |
|
|
int i = scr_readw((u16 *) vc->vc_pos);
|
| 567 |
|
|
u32 type = vc->vc_cursor_type;
|
| 568 |
|
|
|
| 569 |
|
|
if (! (type & 0x10)) return;
|
| 570 |
|
|
if (softcursor_original != -1) return;
|
| 571 |
|
|
softcursor_original = i;
|
| 572 |
|
|
i |= ((type >> 8) & 0xff00 );
|
| 573 |
|
|
i ^= ((type) & 0xff00 );
|
| 574 |
|
|
if ((type & 0x20) && ((softcursor_original & 0x7000) == (i & 0x7000))) i ^= 0x7000;
|
| 575 |
|
|
if ((type & 0x40) && ((i & 0x700) == ((i & 0x7000) >> 4))) i ^= 0x0700;
|
| 576 |
|
|
scr_writew(i, (u16 *) vc->vc_pos);
|
| 577 |
|
|
if (DO_UPDATE(vc))
|
| 578 |
|
|
vc->vc_sw->con_putc(vc, i, vc->vc_y, vc->vc_x);
|
| 579 |
|
|
}
|
| 580 |
|
|
|
| 581 |
|
|
static void hide_softcursor(struct vc_data *vc)
|
| 582 |
|
|
{
|
| 583 |
|
|
if (softcursor_original != -1) {
|
| 584 |
|
|
scr_writew(softcursor_original, (u16 *)vc->vc_pos);
|
| 585 |
|
|
if (DO_UPDATE(vc))
|
| 586 |
|
|
vc->vc_sw->con_putc(vc, softcursor_original,
|
| 587 |
|
|
vc->vc_y, vc->vc_x);
|
| 588 |
|
|
softcursor_original = -1;
|
| 589 |
|
|
}
|
| 590 |
|
|
}
|
| 591 |
|
|
|
| 592 |
|
|
static void hide_cursor(struct vc_data *vc)
|
| 593 |
|
|
{
|
| 594 |
|
|
if (vc == sel_cons)
|
| 595 |
|
|
clear_selection();
|
| 596 |
|
|
vc->vc_sw->con_cursor(vc, CM_ERASE);
|
| 597 |
|
|
hide_softcursor(vc);
|
| 598 |
|
|
}
|
| 599 |
|
|
|
| 600 |
|
|
static void set_cursor(struct vc_data *vc)
|
| 601 |
|
|
{
|
| 602 |
|
|
if (!IS_FG(vc) || console_blanked ||
|
| 603 |
|
|
vc->vc_mode == KD_GRAPHICS)
|
| 604 |
|
|
return;
|
| 605 |
|
|
if (vc->vc_deccm) {
|
| 606 |
|
|
if (vc == sel_cons)
|
| 607 |
|
|
clear_selection();
|
| 608 |
|
|
add_softcursor(vc);
|
| 609 |
|
|
if ((vc->vc_cursor_type & 0x0f) != 1)
|
| 610 |
|
|
vc->vc_sw->con_cursor(vc, CM_DRAW);
|
| 611 |
|
|
} else
|
| 612 |
|
|
hide_cursor(vc);
|
| 613 |
|
|
}
|
| 614 |
|
|
|
| 615 |
|
|
static void set_origin(struct vc_data *vc)
|
| 616 |
|
|
{
|
| 617 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 618 |
|
|
|
| 619 |
|
|
if (!CON_IS_VISIBLE(vc) ||
|
| 620 |
|
|
!vc->vc_sw->con_set_origin ||
|
| 621 |
|
|
!vc->vc_sw->con_set_origin(vc))
|
| 622 |
|
|
vc->vc_origin = (unsigned long)vc->vc_screenbuf;
|
| 623 |
|
|
vc->vc_visible_origin = vc->vc_origin;
|
| 624 |
|
|
vc->vc_scr_end = vc->vc_origin + vc->vc_screenbuf_size;
|
| 625 |
|
|
vc->vc_pos = vc->vc_origin + vc->vc_size_row * vc->vc_y + 2 * vc->vc_x;
|
| 626 |
|
|
}
|
| 627 |
|
|
|
| 628 |
|
|
static inline void save_screen(struct vc_data *vc)
|
| 629 |
|
|
{
|
| 630 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 631 |
|
|
|
| 632 |
|
|
if (vc->vc_sw->con_save_screen)
|
| 633 |
|
|
vc->vc_sw->con_save_screen(vc);
|
| 634 |
|
|
}
|
| 635 |
|
|
|
| 636 |
|
|
/*
|
| 637 |
|
|
* Redrawing of screen
|
| 638 |
|
|
*/
|
| 639 |
|
|
|
| 640 |
|
|
static void clear_buffer_attributes(struct vc_data *vc)
|
| 641 |
|
|
{
|
| 642 |
|
|
unsigned short *p = (unsigned short *)vc->vc_origin;
|
| 643 |
|
|
int count = vc->vc_screenbuf_size / 2;
|
| 644 |
|
|
int mask = vc->vc_hi_font_mask | 0xff;
|
| 645 |
|
|
|
| 646 |
|
|
for (; count > 0; count--, p++) {
|
| 647 |
|
|
scr_writew((scr_readw(p)&mask) | (vc->vc_video_erase_char & ~mask), p);
|
| 648 |
|
|
}
|
| 649 |
|
|
}
|
| 650 |
|
|
|
| 651 |
|
|
void redraw_screen(struct vc_data *vc, int is_switch)
|
| 652 |
|
|
{
|
| 653 |
|
|
int redraw = 0;
|
| 654 |
|
|
|
| 655 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 656 |
|
|
|
| 657 |
|
|
if (!vc) {
|
| 658 |
|
|
/* strange ... */
|
| 659 |
|
|
/* printk("redraw_screen: tty %d not allocated ??\n", new_console+1); */
|
| 660 |
|
|
return;
|
| 661 |
|
|
}
|
| 662 |
|
|
|
| 663 |
|
|
if (is_switch) {
|
| 664 |
|
|
struct vc_data *old_vc = vc_cons[fg_console].d;
|
| 665 |
|
|
if (old_vc == vc)
|
| 666 |
|
|
return;
|
| 667 |
|
|
if (!CON_IS_VISIBLE(vc))
|
| 668 |
|
|
redraw = 1;
|
| 669 |
|
|
*vc->vc_display_fg = vc;
|
| 670 |
|
|
fg_console = vc->vc_num;
|
| 671 |
|
|
hide_cursor(old_vc);
|
| 672 |
|
|
if (!CON_IS_VISIBLE(old_vc)) {
|
| 673 |
|
|
save_screen(old_vc);
|
| 674 |
|
|
set_origin(old_vc);
|
| 675 |
|
|
}
|
| 676 |
|
|
} else {
|
| 677 |
|
|
hide_cursor(vc);
|
| 678 |
|
|
redraw = 1;
|
| 679 |
|
|
}
|
| 680 |
|
|
|
| 681 |
|
|
if (redraw) {
|
| 682 |
|
|
int update;
|
| 683 |
|
|
int old_was_color = vc->vc_can_do_color;
|
| 684 |
|
|
|
| 685 |
|
|
set_origin(vc);
|
| 686 |
|
|
update = vc->vc_sw->con_switch(vc);
|
| 687 |
|
|
set_palette(vc);
|
| 688 |
|
|
/*
|
| 689 |
|
|
* If console changed from mono<->color, the best we can do
|
| 690 |
|
|
* is to clear the buffer attributes. As it currently stands,
|
| 691 |
|
|
* rebuilding new attributes from the old buffer is not doable
|
| 692 |
|
|
* without overly complex code.
|
| 693 |
|
|
*/
|
| 694 |
|
|
if (old_was_color != vc->vc_can_do_color) {
|
| 695 |
|
|
update_attr(vc);
|
| 696 |
|
|
clear_buffer_attributes(vc);
|
| 697 |
|
|
}
|
| 698 |
|
|
if (update && vc->vc_mode != KD_GRAPHICS)
|
| 699 |
|
|
do_update_region(vc, vc->vc_origin, vc->vc_screenbuf_size / 2);
|
| 700 |
|
|
}
|
| 701 |
|
|
set_cursor(vc);
|
| 702 |
|
|
if (is_switch) {
|
| 703 |
|
|
set_leds();
|
| 704 |
|
|
compute_shiftstate();
|
| 705 |
|
|
}
|
| 706 |
|
|
}
|
| 707 |
|
|
|
| 708 |
|
|
/*
|
| 709 |
|
|
* Allocation, freeing and resizing of VTs.
|
| 710 |
|
|
*/
|
| 711 |
|
|
|
| 712 |
|
|
int vc_cons_allocated(unsigned int i)
|
| 713 |
|
|
{
|
| 714 |
|
|
return (i < MAX_NR_CONSOLES && vc_cons[i].d);
|
| 715 |
|
|
}
|
| 716 |
|
|
|
| 717 |
|
|
static void visual_init(struct vc_data *vc, int num, int init)
|
| 718 |
|
|
{
|
| 719 |
|
|
/* ++Geert: vc->vc_sw->con_init determines console size */
|
| 720 |
|
|
if (vc->vc_sw)
|
| 721 |
|
|
module_put(vc->vc_sw->owner);
|
| 722 |
|
|
vc->vc_sw = conswitchp;
|
| 723 |
|
|
#ifndef VT_SINGLE_DRIVER
|
| 724 |
|
|
if (con_driver_map[num])
|
| 725 |
|
|
vc->vc_sw = con_driver_map[num];
|
| 726 |
|
|
#endif
|
| 727 |
|
|
__module_get(vc->vc_sw->owner);
|
| 728 |
|
|
vc->vc_num = num;
|
| 729 |
|
|
vc->vc_display_fg = &master_display_fg;
|
| 730 |
|
|
vc->vc_uni_pagedir_loc = &vc->vc_uni_pagedir;
|
| 731 |
|
|
vc->vc_uni_pagedir = 0;
|
| 732 |
|
|
vc->vc_hi_font_mask = 0;
|
| 733 |
|
|
vc->vc_complement_mask = 0;
|
| 734 |
|
|
vc->vc_can_do_color = 0;
|
| 735 |
|
|
vc->vc_sw->con_init(vc, init);
|
| 736 |
|
|
if (!vc->vc_complement_mask)
|
| 737 |
|
|
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
|
| 738 |
|
|
vc->vc_s_complement_mask = vc->vc_complement_mask;
|
| 739 |
|
|
vc->vc_size_row = vc->vc_cols << 1;
|
| 740 |
|
|
vc->vc_screenbuf_size = vc->vc_rows * vc->vc_size_row;
|
| 741 |
|
|
}
|
| 742 |
|
|
|
| 743 |
|
|
int vc_allocate(unsigned int currcons) /* return 0 on success */
|
| 744 |
|
|
{
|
| 745 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 746 |
|
|
|
| 747 |
|
|
if (currcons >= MAX_NR_CONSOLES)
|
| 748 |
|
|
return -ENXIO;
|
| 749 |
|
|
if (!vc_cons[currcons].d) {
|
| 750 |
|
|
struct vc_data *vc;
|
| 751 |
|
|
struct vt_notifier_param param;
|
| 752 |
|
|
|
| 753 |
|
|
/* prevent users from taking too much memory */
|
| 754 |
|
|
if (currcons >= MAX_NR_USER_CONSOLES && !capable(CAP_SYS_RESOURCE))
|
| 755 |
|
|
return -EPERM;
|
| 756 |
|
|
|
| 757 |
|
|
/* due to the granularity of kmalloc, we waste some memory here */
|
| 758 |
|
|
/* the alloc is done in two steps, to optimize the common situation
|
| 759 |
|
|
of a 25x80 console (structsize=216, screenbuf_size=4000) */
|
| 760 |
|
|
/* although the numbers above are not valid since long ago, the
|
| 761 |
|
|
point is still up-to-date and the comment still has its value
|
| 762 |
|
|
even if only as a historical artifact. --mj, July 1998 */
|
| 763 |
|
|
param.vc = vc = kzalloc(sizeof(struct vc_data), GFP_KERNEL);
|
| 764 |
|
|
if (!vc)
|
| 765 |
|
|
return -ENOMEM;
|
| 766 |
|
|
vc_cons[currcons].d = vc;
|
| 767 |
|
|
INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
|
| 768 |
|
|
visual_init(vc, currcons, 1);
|
| 769 |
|
|
if (!*vc->vc_uni_pagedir_loc)
|
| 770 |
|
|
con_set_default_unimap(vc);
|
| 771 |
|
|
if (!vc->vc_kmalloced)
|
| 772 |
|
|
vc->vc_screenbuf = kmalloc(vc->vc_screenbuf_size, GFP_KERNEL);
|
| 773 |
|
|
if (!vc->vc_screenbuf) {
|
| 774 |
|
|
kfree(vc);
|
| 775 |
|
|
vc_cons[currcons].d = NULL;
|
| 776 |
|
|
return -ENOMEM;
|
| 777 |
|
|
}
|
| 778 |
|
|
vc->vc_kmalloced = 1;
|
| 779 |
|
|
vc_init(vc, vc->vc_rows, vc->vc_cols, 1);
|
| 780 |
|
|
atomic_notifier_call_chain(&vt_notifier_list, VT_ALLOCATE, ¶m);
|
| 781 |
|
|
}
|
| 782 |
|
|
return 0;
|
| 783 |
|
|
}
|
| 784 |
|
|
|
| 785 |
|
|
static inline int resize_screen(struct vc_data *vc, int width, int height,
|
| 786 |
|
|
int user)
|
| 787 |
|
|
{
|
| 788 |
|
|
/* Resizes the resolution of the display adapater */
|
| 789 |
|
|
int err = 0;
|
| 790 |
|
|
|
| 791 |
|
|
if (vc->vc_mode != KD_GRAPHICS && vc->vc_sw->con_resize)
|
| 792 |
|
|
err = vc->vc_sw->con_resize(vc, width, height, user);
|
| 793 |
|
|
|
| 794 |
|
|
return err;
|
| 795 |
|
|
}
|
| 796 |
|
|
|
| 797 |
|
|
/*
|
| 798 |
|
|
* Change # of rows and columns (0 means unchanged/the size of fg_console)
|
| 799 |
|
|
* [this is to be used together with some user program
|
| 800 |
|
|
* like resize that changes the hardware videomode]
|
| 801 |
|
|
*/
|
| 802 |
|
|
#define VC_RESIZE_MAXCOL (32767)
|
| 803 |
|
|
#define VC_RESIZE_MAXROW (32767)
|
| 804 |
|
|
int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int lines)
|
| 805 |
|
|
{
|
| 806 |
|
|
unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0;
|
| 807 |
|
|
unsigned int old_cols, old_rows, old_row_size, old_screen_size;
|
| 808 |
|
|
unsigned int new_cols, new_rows, new_row_size, new_screen_size;
|
| 809 |
|
|
unsigned int end, user;
|
| 810 |
|
|
unsigned short *newscreen;
|
| 811 |
|
|
|
| 812 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 813 |
|
|
|
| 814 |
|
|
if (!vc)
|
| 815 |
|
|
return -ENXIO;
|
| 816 |
|
|
|
| 817 |
|
|
user = vc->vc_resize_user;
|
| 818 |
|
|
vc->vc_resize_user = 0;
|
| 819 |
|
|
|
| 820 |
|
|
if (cols > VC_RESIZE_MAXCOL || lines > VC_RESIZE_MAXROW)
|
| 821 |
|
|
return -EINVAL;
|
| 822 |
|
|
|
| 823 |
|
|
new_cols = (cols ? cols : vc->vc_cols);
|
| 824 |
|
|
new_rows = (lines ? lines : vc->vc_rows);
|
| 825 |
|
|
new_row_size = new_cols << 1;
|
| 826 |
|
|
new_screen_size = new_row_size * new_rows;
|
| 827 |
|
|
|
| 828 |
|
|
if (new_cols == vc->vc_cols && new_rows == vc->vc_rows)
|
| 829 |
|
|
return 0;
|
| 830 |
|
|
|
| 831 |
|
|
newscreen = kmalloc(new_screen_size, GFP_USER);
|
| 832 |
|
|
if (!newscreen)
|
| 833 |
|
|
return -ENOMEM;
|
| 834 |
|
|
|
| 835 |
|
|
old_rows = vc->vc_rows;
|
| 836 |
|
|
old_cols = vc->vc_cols;
|
| 837 |
|
|
old_row_size = vc->vc_size_row;
|
| 838 |
|
|
old_screen_size = vc->vc_screenbuf_size;
|
| 839 |
|
|
|
| 840 |
|
|
err = resize_screen(vc, new_cols, new_rows, user);
|
| 841 |
|
|
if (err) {
|
| 842 |
|
|
kfree(newscreen);
|
| 843 |
|
|
return err;
|
| 844 |
|
|
}
|
| 845 |
|
|
|
| 846 |
|
|
vc->vc_rows = new_rows;
|
| 847 |
|
|
vc->vc_cols = new_cols;
|
| 848 |
|
|
vc->vc_size_row = new_row_size;
|
| 849 |
|
|
vc->vc_screenbuf_size = new_screen_size;
|
| 850 |
|
|
|
| 851 |
|
|
rlth = min(old_row_size, new_row_size);
|
| 852 |
|
|
rrem = new_row_size - rlth;
|
| 853 |
|
|
old_origin = vc->vc_origin;
|
| 854 |
|
|
new_origin = (long) newscreen;
|
| 855 |
|
|
new_scr_end = new_origin + new_screen_size;
|
| 856 |
|
|
|
| 857 |
|
|
if (vc->vc_y > new_rows) {
|
| 858 |
|
|
if (old_rows - vc->vc_y < new_rows) {
|
| 859 |
|
|
/*
|
| 860 |
|
|
* Cursor near the bottom, copy contents from the
|
| 861 |
|
|
* bottom of buffer
|
| 862 |
|
|
*/
|
| 863 |
|
|
old_origin += (old_rows - new_rows) * old_row_size;
|
| 864 |
|
|
end = vc->vc_scr_end;
|
| 865 |
|
|
} else {
|
| 866 |
|
|
/*
|
| 867 |
|
|
* Cursor is in no man's land, copy 1/2 screenful
|
| 868 |
|
|
* from the top and bottom of cursor position
|
| 869 |
|
|
*/
|
| 870 |
|
|
old_origin += (vc->vc_y - new_rows/2) * old_row_size;
|
| 871 |
|
|
end = old_origin + (old_row_size * new_rows);
|
| 872 |
|
|
}
|
| 873 |
|
|
} else
|
| 874 |
|
|
/*
|
| 875 |
|
|
* Cursor near the top, copy contents from the top of buffer
|
| 876 |
|
|
*/
|
| 877 |
|
|
end = (old_rows > new_rows) ? old_origin +
|
| 878 |
|
|
(old_row_size * new_rows) :
|
| 879 |
|
|
vc->vc_scr_end;
|
| 880 |
|
|
|
| 881 |
|
|
update_attr(vc);
|
| 882 |
|
|
|
| 883 |
|
|
while (old_origin < end) {
|
| 884 |
|
|
scr_memcpyw((unsigned short *) new_origin,
|
| 885 |
|
|
(unsigned short *) old_origin, rlth);
|
| 886 |
|
|
if (rrem)
|
| 887 |
|
|
scr_memsetw((void *)(new_origin + rlth),
|
| 888 |
|
|
vc->vc_video_erase_char, rrem);
|
| 889 |
|
|
old_origin += old_row_size;
|
| 890 |
|
|
new_origin += new_row_size;
|
| 891 |
|
|
}
|
| 892 |
|
|
if (new_scr_end > new_origin)
|
| 893 |
|
|
scr_memsetw((void *)new_origin, vc->vc_video_erase_char,
|
| 894 |
|
|
new_scr_end - new_origin);
|
| 895 |
|
|
if (vc->vc_kmalloced)
|
| 896 |
|
|
kfree(vc->vc_screenbuf);
|
| 897 |
|
|
vc->vc_screenbuf = newscreen;
|
| 898 |
|
|
vc->vc_kmalloced = 1;
|
| 899 |
|
|
vc->vc_screenbuf_size = new_screen_size;
|
| 900 |
|
|
set_origin(vc);
|
| 901 |
|
|
|
| 902 |
|
|
/* do part of a reset_terminal() */
|
| 903 |
|
|
vc->vc_top = 0;
|
| 904 |
|
|
vc->vc_bottom = vc->vc_rows;
|
| 905 |
|
|
gotoxy(vc, vc->vc_x, vc->vc_y);
|
| 906 |
|
|
save_cur(vc);
|
| 907 |
|
|
|
| 908 |
|
|
if (vc->vc_tty) {
|
| 909 |
|
|
struct winsize ws, *cws = &vc->vc_tty->winsize;
|
| 910 |
|
|
|
| 911 |
|
|
memset(&ws, 0, sizeof(ws));
|
| 912 |
|
|
ws.ws_row = vc->vc_rows;
|
| 913 |
|
|
ws.ws_col = vc->vc_cols;
|
| 914 |
|
|
ws.ws_ypixel = vc->vc_scan_lines;
|
| 915 |
|
|
if ((ws.ws_row != cws->ws_row || ws.ws_col != cws->ws_col) &&
|
| 916 |
|
|
vc->vc_tty->pgrp)
|
| 917 |
|
|
kill_pgrp(vc->vc_tty->pgrp, SIGWINCH, 1);
|
| 918 |
|
|
*cws = ws;
|
| 919 |
|
|
}
|
| 920 |
|
|
|
| 921 |
|
|
if (CON_IS_VISIBLE(vc))
|
| 922 |
|
|
update_screen(vc);
|
| 923 |
|
|
return err;
|
| 924 |
|
|
}
|
| 925 |
|
|
|
| 926 |
|
|
int vc_lock_resize(struct vc_data *vc, unsigned int cols, unsigned int lines)
|
| 927 |
|
|
{
|
| 928 |
|
|
int rc;
|
| 929 |
|
|
|
| 930 |
|
|
acquire_console_sem();
|
| 931 |
|
|
rc = vc_resize(vc, cols, lines);
|
| 932 |
|
|
release_console_sem();
|
| 933 |
|
|
return rc;
|
| 934 |
|
|
}
|
| 935 |
|
|
|
| 936 |
|
|
void vc_deallocate(unsigned int currcons)
|
| 937 |
|
|
{
|
| 938 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 939 |
|
|
|
| 940 |
|
|
if (vc_cons_allocated(currcons)) {
|
| 941 |
|
|
struct vc_data *vc = vc_cons[currcons].d;
|
| 942 |
|
|
struct vt_notifier_param param = { .vc = vc };
|
| 943 |
|
|
atomic_notifier_call_chain(&vt_notifier_list, VT_DEALLOCATE, ¶m);
|
| 944 |
|
|
vc->vc_sw->con_deinit(vc);
|
| 945 |
|
|
put_pid(vc->vt_pid);
|
| 946 |
|
|
module_put(vc->vc_sw->owner);
|
| 947 |
|
|
if (vc->vc_kmalloced)
|
| 948 |
|
|
kfree(vc->vc_screenbuf);
|
| 949 |
|
|
if (currcons >= MIN_NR_CONSOLES)
|
| 950 |
|
|
kfree(vc);
|
| 951 |
|
|
vc_cons[currcons].d = NULL;
|
| 952 |
|
|
}
|
| 953 |
|
|
}
|
| 954 |
|
|
|
| 955 |
|
|
/*
|
| 956 |
|
|
* VT102 emulator
|
| 957 |
|
|
*/
|
| 958 |
|
|
|
| 959 |
|
|
#define set_kbd(vc, x) set_vc_kbd_mode(kbd_table + (vc)->vc_num, (x))
|
| 960 |
|
|
#define clr_kbd(vc, x) clr_vc_kbd_mode(kbd_table + (vc)->vc_num, (x))
|
| 961 |
|
|
#define is_kbd(vc, x) vc_kbd_mode(kbd_table + (vc)->vc_num, (x))
|
| 962 |
|
|
|
| 963 |
|
|
#define decarm VC_REPEAT
|
| 964 |
|
|
#define decckm VC_CKMODE
|
| 965 |
|
|
#define kbdapplic VC_APPLIC
|
| 966 |
|
|
#define lnm VC_CRLF
|
| 967 |
|
|
|
| 968 |
|
|
/*
|
| 969 |
|
|
* this is what the terminal answers to a ESC-Z or csi0c query.
|
| 970 |
|
|
*/
|
| 971 |
|
|
#define VT100ID "\033[?1;2c"
|
| 972 |
|
|
#define VT102ID "\033[?6c"
|
| 973 |
|
|
|
| 974 |
|
|
unsigned char color_table[] = { 0, 4, 2, 6, 1, 5, 3, 7,
|
| 975 |
|
|
8,12,10,14, 9,13,11,15 };
|
| 976 |
|
|
|
| 977 |
|
|
/* the default colour table, for VGA+ colour systems */
|
| 978 |
|
|
int default_red[] = {0x00,0xaa,0x00,0xaa,0x00,0xaa,0x00,0xaa,
|
| 979 |
|
|
0x55,0xff,0x55,0xff,0x55,0xff,0x55,0xff};
|
| 980 |
|
|
int default_grn[] = {0x00,0x00,0xaa,0x55,0x00,0x00,0xaa,0xaa,
|
| 981 |
|
|
0x55,0x55,0xff,0xff,0x55,0x55,0xff,0xff};
|
| 982 |
|
|
int default_blu[] = {0x00,0x00,0x00,0x00,0xaa,0xaa,0xaa,0xaa,
|
| 983 |
|
|
0x55,0x55,0x55,0x55,0xff,0xff,0xff,0xff};
|
| 984 |
|
|
|
| 985 |
|
|
module_param_array(default_red, int, NULL, S_IRUGO | S_IWUSR);
|
| 986 |
|
|
module_param_array(default_grn, int, NULL, S_IRUGO | S_IWUSR);
|
| 987 |
|
|
module_param_array(default_blu, int, NULL, S_IRUGO | S_IWUSR);
|
| 988 |
|
|
|
| 989 |
|
|
/*
|
| 990 |
|
|
* gotoxy() must verify all boundaries, because the arguments
|
| 991 |
|
|
* might also be negative. If the given position is out of
|
| 992 |
|
|
* bounds, the cursor is placed at the nearest margin.
|
| 993 |
|
|
*/
|
| 994 |
|
|
static void gotoxy(struct vc_data *vc, int new_x, int new_y)
|
| 995 |
|
|
{
|
| 996 |
|
|
int min_y, max_y;
|
| 997 |
|
|
|
| 998 |
|
|
if (new_x < 0)
|
| 999 |
|
|
vc->vc_x = 0;
|
| 1000 |
|
|
else {
|
| 1001 |
|
|
if (new_x >= vc->vc_cols)
|
| 1002 |
|
|
vc->vc_x = vc->vc_cols - 1;
|
| 1003 |
|
|
else
|
| 1004 |
|
|
vc->vc_x = new_x;
|
| 1005 |
|
|
}
|
| 1006 |
|
|
|
| 1007 |
|
|
if (vc->vc_decom) {
|
| 1008 |
|
|
min_y = vc->vc_top;
|
| 1009 |
|
|
max_y = vc->vc_bottom;
|
| 1010 |
|
|
} else {
|
| 1011 |
|
|
min_y = 0;
|
| 1012 |
|
|
max_y = vc->vc_rows;
|
| 1013 |
|
|
}
|
| 1014 |
|
|
if (new_y < min_y)
|
| 1015 |
|
|
vc->vc_y = min_y;
|
| 1016 |
|
|
else if (new_y >= max_y)
|
| 1017 |
|
|
vc->vc_y = max_y - 1;
|
| 1018 |
|
|
else
|
| 1019 |
|
|
vc->vc_y = new_y;
|
| 1020 |
|
|
vc->vc_pos = vc->vc_origin + vc->vc_y * vc->vc_size_row + (vc->vc_x<<1);
|
| 1021 |
|
|
vc->vc_need_wrap = 0;
|
| 1022 |
|
|
}
|
| 1023 |
|
|
|
| 1024 |
|
|
/* for absolute user moves, when decom is set */
|
| 1025 |
|
|
static void gotoxay(struct vc_data *vc, int new_x, int new_y)
|
| 1026 |
|
|
{
|
| 1027 |
|
|
gotoxy(vc, new_x, vc->vc_decom ? (vc->vc_top + new_y) : new_y);
|
| 1028 |
|
|
}
|
| 1029 |
|
|
|
| 1030 |
|
|
void scrollback(struct vc_data *vc, int lines)
|
| 1031 |
|
|
{
|
| 1032 |
|
|
if (!lines)
|
| 1033 |
|
|
lines = vc->vc_rows / 2;
|
| 1034 |
|
|
scrolldelta(-lines);
|
| 1035 |
|
|
}
|
| 1036 |
|
|
|
| 1037 |
|
|
void scrollfront(struct vc_data *vc, int lines)
|
| 1038 |
|
|
{
|
| 1039 |
|
|
if (!lines)
|
| 1040 |
|
|
lines = vc->vc_rows / 2;
|
| 1041 |
|
|
scrolldelta(lines);
|
| 1042 |
|
|
}
|
| 1043 |
|
|
|
| 1044 |
|
|
static void lf(struct vc_data *vc)
|
| 1045 |
|
|
{
|
| 1046 |
|
|
/* don't scroll if above bottom of scrolling region, or
|
| 1047 |
|
|
* if below scrolling region
|
| 1048 |
|
|
*/
|
| 1049 |
|
|
if (vc->vc_y + 1 == vc->vc_bottom)
|
| 1050 |
|
|
scrup(vc, vc->vc_top, vc->vc_bottom, 1);
|
| 1051 |
|
|
else if (vc->vc_y < vc->vc_rows - 1) {
|
| 1052 |
|
|
vc->vc_y++;
|
| 1053 |
|
|
vc->vc_pos += vc->vc_size_row;
|
| 1054 |
|
|
}
|
| 1055 |
|
|
vc->vc_need_wrap = 0;
|
| 1056 |
|
|
notify_write(vc, '\n');
|
| 1057 |
|
|
}
|
| 1058 |
|
|
|
| 1059 |
|
|
static void ri(struct vc_data *vc)
|
| 1060 |
|
|
{
|
| 1061 |
|
|
/* don't scroll if below top of scrolling region, or
|
| 1062 |
|
|
* if above scrolling region
|
| 1063 |
|
|
*/
|
| 1064 |
|
|
if (vc->vc_y == vc->vc_top)
|
| 1065 |
|
|
scrdown(vc, vc->vc_top, vc->vc_bottom, 1);
|
| 1066 |
|
|
else if (vc->vc_y > 0) {
|
| 1067 |
|
|
vc->vc_y--;
|
| 1068 |
|
|
vc->vc_pos -= vc->vc_size_row;
|
| 1069 |
|
|
}
|
| 1070 |
|
|
vc->vc_need_wrap = 0;
|
| 1071 |
|
|
}
|
| 1072 |
|
|
|
| 1073 |
|
|
static inline void cr(struct vc_data *vc)
|
| 1074 |
|
|
{
|
| 1075 |
|
|
vc->vc_pos -= vc->vc_x << 1;
|
| 1076 |
|
|
vc->vc_need_wrap = vc->vc_x = 0;
|
| 1077 |
|
|
notify_write(vc, '\r');
|
| 1078 |
|
|
}
|
| 1079 |
|
|
|
| 1080 |
|
|
static inline void bs(struct vc_data *vc)
|
| 1081 |
|
|
{
|
| 1082 |
|
|
if (vc->vc_x) {
|
| 1083 |
|
|
vc->vc_pos -= 2;
|
| 1084 |
|
|
vc->vc_x--;
|
| 1085 |
|
|
vc->vc_need_wrap = 0;
|
| 1086 |
|
|
notify_write(vc, '\b');
|
| 1087 |
|
|
}
|
| 1088 |
|
|
}
|
| 1089 |
|
|
|
| 1090 |
|
|
static inline void del(struct vc_data *vc)
|
| 1091 |
|
|
{
|
| 1092 |
|
|
/* ignored */
|
| 1093 |
|
|
}
|
| 1094 |
|
|
|
| 1095 |
|
|
static void csi_J(struct vc_data *vc, int vpar)
|
| 1096 |
|
|
{
|
| 1097 |
|
|
unsigned int count;
|
| 1098 |
|
|
unsigned short * start;
|
| 1099 |
|
|
|
| 1100 |
|
|
switch (vpar) {
|
| 1101 |
|
|
case 0: /* erase from cursor to end of display */
|
| 1102 |
|
|
count = (vc->vc_scr_end - vc->vc_pos) >> 1;
|
| 1103 |
|
|
start = (unsigned short *)vc->vc_pos;
|
| 1104 |
|
|
if (DO_UPDATE(vc)) {
|
| 1105 |
|
|
/* do in two stages */
|
| 1106 |
|
|
vc->vc_sw->con_clear(vc, vc->vc_y, vc->vc_x, 1,
|
| 1107 |
|
|
vc->vc_cols - vc->vc_x);
|
| 1108 |
|
|
vc->vc_sw->con_clear(vc, vc->vc_y + 1, 0,
|
| 1109 |
|
|
vc->vc_rows - vc->vc_y - 1,
|
| 1110 |
|
|
vc->vc_cols);
|
| 1111 |
|
|
}
|
| 1112 |
|
|
break;
|
| 1113 |
|
|
case 1: /* erase from start to cursor */
|
| 1114 |
|
|
count = ((vc->vc_pos - vc->vc_origin) >> 1) + 1;
|
| 1115 |
|
|
start = (unsigned short *)vc->vc_origin;
|
| 1116 |
|
|
if (DO_UPDATE(vc)) {
|
| 1117 |
|
|
/* do in two stages */
|
| 1118 |
|
|
vc->vc_sw->con_clear(vc, 0, 0, vc->vc_y,
|
| 1119 |
|
|
vc->vc_cols);
|
| 1120 |
|
|
vc->vc_sw->con_clear(vc, vc->vc_y, 0, 1,
|
| 1121 |
|
|
vc->vc_x + 1);
|
| 1122 |
|
|
}
|
| 1123 |
|
|
break;
|
| 1124 |
|
|
case 2: /* erase whole display */
|
| 1125 |
|
|
count = vc->vc_cols * vc->vc_rows;
|
| 1126 |
|
|
start = (unsigned short *)vc->vc_origin;
|
| 1127 |
|
|
if (DO_UPDATE(vc))
|
| 1128 |
|
|
vc->vc_sw->con_clear(vc, 0, 0,
|
| 1129 |
|
|
vc->vc_rows,
|
| 1130 |
|
|
vc->vc_cols);
|
| 1131 |
|
|
break;
|
| 1132 |
|
|
default:
|
| 1133 |
|
|
return;
|
| 1134 |
|
|
}
|
| 1135 |
|
|
scr_memsetw(start, vc->vc_video_erase_char, 2 * count);
|
| 1136 |
|
|
vc->vc_need_wrap = 0;
|
| 1137 |
|
|
}
|
| 1138 |
|
|
|
| 1139 |
|
|
static void csi_K(struct vc_data *vc, int vpar)
|
| 1140 |
|
|
{
|
| 1141 |
|
|
unsigned int count;
|
| 1142 |
|
|
unsigned short * start;
|
| 1143 |
|
|
|
| 1144 |
|
|
switch (vpar) {
|
| 1145 |
|
|
case 0: /* erase from cursor to end of line */
|
| 1146 |
|
|
count = vc->vc_cols - vc->vc_x;
|
| 1147 |
|
|
start = (unsigned short *)vc->vc_pos;
|
| 1148 |
|
|
if (DO_UPDATE(vc))
|
| 1149 |
|
|
vc->vc_sw->con_clear(vc, vc->vc_y, vc->vc_x, 1,
|
| 1150 |
|
|
vc->vc_cols - vc->vc_x);
|
| 1151 |
|
|
break;
|
| 1152 |
|
|
case 1: /* erase from start of line to cursor */
|
| 1153 |
|
|
start = (unsigned short *)(vc->vc_pos - (vc->vc_x << 1));
|
| 1154 |
|
|
count = vc->vc_x + 1;
|
| 1155 |
|
|
if (DO_UPDATE(vc))
|
| 1156 |
|
|
vc->vc_sw->con_clear(vc, vc->vc_y, 0, 1,
|
| 1157 |
|
|
vc->vc_x + 1);
|
| 1158 |
|
|
break;
|
| 1159 |
|
|
case 2: /* erase whole line */
|
| 1160 |
|
|
start = (unsigned short *)(vc->vc_pos - (vc->vc_x << 1));
|
| 1161 |
|
|
count = vc->vc_cols;
|
| 1162 |
|
|
if (DO_UPDATE(vc))
|
| 1163 |
|
|
vc->vc_sw->con_clear(vc, vc->vc_y, 0, 1,
|
| 1164 |
|
|
vc->vc_cols);
|
| 1165 |
|
|
break;
|
| 1166 |
|
|
default:
|
| 1167 |
|
|
return;
|
| 1168 |
|
|
}
|
| 1169 |
|
|
scr_memsetw(start, vc->vc_video_erase_char, 2 * count);
|
| 1170 |
|
|
vc->vc_need_wrap = 0;
|
| 1171 |
|
|
}
|
| 1172 |
|
|
|
| 1173 |
|
|
static void csi_X(struct vc_data *vc, int vpar) /* erase the following vpar positions */
|
| 1174 |
|
|
{ /* not vt100? */
|
| 1175 |
|
|
int count;
|
| 1176 |
|
|
|
| 1177 |
|
|
if (!vpar)
|
| 1178 |
|
|
vpar++;
|
| 1179 |
|
|
count = (vpar > vc->vc_cols - vc->vc_x) ? (vc->vc_cols - vc->vc_x) : vpar;
|
| 1180 |
|
|
|
| 1181 |
|
|
scr_memsetw((unsigned short *)vc->vc_pos, vc->vc_video_erase_char, 2 * count);
|
| 1182 |
|
|
if (DO_UPDATE(vc))
|
| 1183 |
|
|
vc->vc_sw->con_clear(vc, vc->vc_y, vc->vc_x, 1, count);
|
| 1184 |
|
|
vc->vc_need_wrap = 0;
|
| 1185 |
|
|
}
|
| 1186 |
|
|
|
| 1187 |
|
|
static void default_attr(struct vc_data *vc)
|
| 1188 |
|
|
{
|
| 1189 |
|
|
vc->vc_intensity = 1;
|
| 1190 |
|
|
vc->vc_italic = 0;
|
| 1191 |
|
|
vc->vc_underline = 0;
|
| 1192 |
|
|
vc->vc_reverse = 0;
|
| 1193 |
|
|
vc->vc_blink = 0;
|
| 1194 |
|
|
vc->vc_color = vc->vc_def_color;
|
| 1195 |
|
|
}
|
| 1196 |
|
|
|
| 1197 |
|
|
/* console_sem is held */
|
| 1198 |
|
|
static void csi_m(struct vc_data *vc)
|
| 1199 |
|
|
{
|
| 1200 |
|
|
int i;
|
| 1201 |
|
|
|
| 1202 |
|
|
for (i = 0; i <= vc->vc_npar; i++)
|
| 1203 |
|
|
switch (vc->vc_par[i]) {
|
| 1204 |
|
|
case 0: /* all attributes off */
|
| 1205 |
|
|
default_attr(vc);
|
| 1206 |
|
|
break;
|
| 1207 |
|
|
case 1:
|
| 1208 |
|
|
vc->vc_intensity = 2;
|
| 1209 |
|
|
break;
|
| 1210 |
|
|
case 2:
|
| 1211 |
|
|
vc->vc_intensity = 0;
|
| 1212 |
|
|
break;
|
| 1213 |
|
|
case 3:
|
| 1214 |
|
|
vc->vc_italic = 1;
|
| 1215 |
|
|
break;
|
| 1216 |
|
|
case 4:
|
| 1217 |
|
|
vc->vc_underline = 1;
|
| 1218 |
|
|
break;
|
| 1219 |
|
|
case 5:
|
| 1220 |
|
|
vc->vc_blink = 1;
|
| 1221 |
|
|
break;
|
| 1222 |
|
|
case 7:
|
| 1223 |
|
|
vc->vc_reverse = 1;
|
| 1224 |
|
|
break;
|
| 1225 |
|
|
case 10: /* ANSI X3.64-1979 (SCO-ish?)
|
| 1226 |
|
|
* Select primary font, don't display
|
| 1227 |
|
|
* control chars if defined, don't set
|
| 1228 |
|
|
* bit 8 on output.
|
| 1229 |
|
|
*/
|
| 1230 |
|
|
vc->vc_translate = set_translate(vc->vc_charset == 0
|
| 1231 |
|
|
? vc->vc_G0_charset
|
| 1232 |
|
|
: vc->vc_G1_charset, vc);
|
| 1233 |
|
|
vc->vc_disp_ctrl = 0;
|
| 1234 |
|
|
vc->vc_toggle_meta = 0;
|
| 1235 |
|
|
break;
|
| 1236 |
|
|
case 11: /* ANSI X3.64-1979 (SCO-ish?)
|
| 1237 |
|
|
* Select first alternate font, lets
|
| 1238 |
|
|
* chars < 32 be displayed as ROM chars.
|
| 1239 |
|
|
*/
|
| 1240 |
|
|
vc->vc_translate = set_translate(IBMPC_MAP, vc);
|
| 1241 |
|
|
vc->vc_disp_ctrl = 1;
|
| 1242 |
|
|
vc->vc_toggle_meta = 0;
|
| 1243 |
|
|
break;
|
| 1244 |
|
|
case 12: /* ANSI X3.64-1979 (SCO-ish?)
|
| 1245 |
|
|
* Select second alternate font, toggle
|
| 1246 |
|
|
* high bit before displaying as ROM char.
|
| 1247 |
|
|
*/
|
| 1248 |
|
|
vc->vc_translate = set_translate(IBMPC_MAP, vc);
|
| 1249 |
|
|
vc->vc_disp_ctrl = 1;
|
| 1250 |
|
|
vc->vc_toggle_meta = 1;
|
| 1251 |
|
|
break;
|
| 1252 |
|
|
case 21:
|
| 1253 |
|
|
case 22:
|
| 1254 |
|
|
vc->vc_intensity = 1;
|
| 1255 |
|
|
break;
|
| 1256 |
|
|
case 23:
|
| 1257 |
|
|
vc->vc_italic = 0;
|
| 1258 |
|
|
break;
|
| 1259 |
|
|
case 24:
|
| 1260 |
|
|
vc->vc_underline = 0;
|
| 1261 |
|
|
break;
|
| 1262 |
|
|
case 25:
|
| 1263 |
|
|
vc->vc_blink = 0;
|
| 1264 |
|
|
break;
|
| 1265 |
|
|
case 27:
|
| 1266 |
|
|
vc->vc_reverse = 0;
|
| 1267 |
|
|
break;
|
| 1268 |
|
|
case 38: /* ANSI X3.64-1979 (SCO-ish?)
|
| 1269 |
|
|
* Enables underscore, white foreground
|
| 1270 |
|
|
* with white underscore (Linux - use
|
| 1271 |
|
|
* default foreground).
|
| 1272 |
|
|
*/
|
| 1273 |
|
|
vc->vc_color = (vc->vc_def_color & 0x0f) | (vc->vc_color & 0xf0);
|
| 1274 |
|
|
vc->vc_underline = 1;
|
| 1275 |
|
|
break;
|
| 1276 |
|
|
case 39: /* ANSI X3.64-1979 (SCO-ish?)
|
| 1277 |
|
|
* Disable underline option.
|
| 1278 |
|
|
* Reset colour to default? It did this
|
| 1279 |
|
|
* before...
|
| 1280 |
|
|
*/
|
| 1281 |
|
|
vc->vc_color = (vc->vc_def_color & 0x0f) | (vc->vc_color & 0xf0);
|
| 1282 |
|
|
vc->vc_underline = 0;
|
| 1283 |
|
|
break;
|
| 1284 |
|
|
case 49:
|
| 1285 |
|
|
vc->vc_color = (vc->vc_def_color & 0xf0) | (vc->vc_color & 0x0f);
|
| 1286 |
|
|
break;
|
| 1287 |
|
|
default:
|
| 1288 |
|
|
if (vc->vc_par[i] >= 30 && vc->vc_par[i] <= 37)
|
| 1289 |
|
|
vc->vc_color = color_table[vc->vc_par[i] - 30]
|
| 1290 |
|
|
| (vc->vc_color & 0xf0);
|
| 1291 |
|
|
else if (vc->vc_par[i] >= 40 && vc->vc_par[i] <= 47)
|
| 1292 |
|
|
vc->vc_color = (color_table[vc->vc_par[i] - 40] << 4)
|
| 1293 |
|
|
| (vc->vc_color & 0x0f);
|
| 1294 |
|
|
break;
|
| 1295 |
|
|
}
|
| 1296 |
|
|
update_attr(vc);
|
| 1297 |
|
|
}
|
| 1298 |
|
|
|
| 1299 |
|
|
static void respond_string(const char *p, struct tty_struct *tty)
|
| 1300 |
|
|
{
|
| 1301 |
|
|
while (*p) {
|
| 1302 |
|
|
tty_insert_flip_char(tty, *p, 0);
|
| 1303 |
|
|
p++;
|
| 1304 |
|
|
}
|
| 1305 |
|
|
con_schedule_flip(tty);
|
| 1306 |
|
|
}
|
| 1307 |
|
|
|
| 1308 |
|
|
static void cursor_report(struct vc_data *vc, struct tty_struct *tty)
|
| 1309 |
|
|
{
|
| 1310 |
|
|
char buf[40];
|
| 1311 |
|
|
|
| 1312 |
|
|
sprintf(buf, "\033[%d;%dR", vc->vc_y + (vc->vc_decom ? vc->vc_top + 1 : 1), vc->vc_x + 1);
|
| 1313 |
|
|
respond_string(buf, tty);
|
| 1314 |
|
|
}
|
| 1315 |
|
|
|
| 1316 |
|
|
static inline void status_report(struct tty_struct *tty)
|
| 1317 |
|
|
{
|
| 1318 |
|
|
respond_string("\033[0n", tty); /* Terminal ok */
|
| 1319 |
|
|
}
|
| 1320 |
|
|
|
| 1321 |
|
|
static inline void respond_ID(struct tty_struct * tty)
|
| 1322 |
|
|
{
|
| 1323 |
|
|
respond_string(VT102ID, tty);
|
| 1324 |
|
|
}
|
| 1325 |
|
|
|
| 1326 |
|
|
void mouse_report(struct tty_struct *tty, int butt, int mrx, int mry)
|
| 1327 |
|
|
{
|
| 1328 |
|
|
char buf[8];
|
| 1329 |
|
|
|
| 1330 |
|
|
sprintf(buf, "\033[M%c%c%c", (char)(' ' + butt), (char)('!' + mrx),
|
| 1331 |
|
|
(char)('!' + mry));
|
| 1332 |
|
|
respond_string(buf, tty);
|
| 1333 |
|
|
}
|
| 1334 |
|
|
|
| 1335 |
|
|
/* invoked via ioctl(TIOCLINUX) and through set_selection */
|
| 1336 |
|
|
int mouse_reporting(void)
|
| 1337 |
|
|
{
|
| 1338 |
|
|
return vc_cons[fg_console].d->vc_report_mouse;
|
| 1339 |
|
|
}
|
| 1340 |
|
|
|
| 1341 |
|
|
/* console_sem is held */
|
| 1342 |
|
|
static void set_mode(struct vc_data *vc, int on_off)
|
| 1343 |
|
|
{
|
| 1344 |
|
|
int i;
|
| 1345 |
|
|
|
| 1346 |
|
|
for (i = 0; i <= vc->vc_npar; i++)
|
| 1347 |
|
|
if (vc->vc_ques) {
|
| 1348 |
|
|
switch(vc->vc_par[i]) { /* DEC private modes set/reset */
|
| 1349 |
|
|
case 1: /* Cursor keys send ^[Ox/^[[x */
|
| 1350 |
|
|
if (on_off)
|
| 1351 |
|
|
set_kbd(vc, decckm);
|
| 1352 |
|
|
else
|
| 1353 |
|
|
clr_kbd(vc, decckm);
|
| 1354 |
|
|
break;
|
| 1355 |
|
|
case 3: /* 80/132 mode switch unimplemented */
|
| 1356 |
|
|
vc->vc_deccolm = on_off;
|
| 1357 |
|
|
#if 0
|
| 1358 |
|
|
vc_resize(deccolm ? 132 : 80, vc->vc_rows);
|
| 1359 |
|
|
/* this alone does not suffice; some user mode
|
| 1360 |
|
|
utility has to change the hardware regs */
|
| 1361 |
|
|
#endif
|
| 1362 |
|
|
break;
|
| 1363 |
|
|
case 5: /* Inverted screen on/off */
|
| 1364 |
|
|
if (vc->vc_decscnm != on_off) {
|
| 1365 |
|
|
vc->vc_decscnm = on_off;
|
| 1366 |
|
|
invert_screen(vc, 0, vc->vc_screenbuf_size, 0);
|
| 1367 |
|
|
update_attr(vc);
|
| 1368 |
|
|
}
|
| 1369 |
|
|
break;
|
| 1370 |
|
|
case 6: /* Origin relative/absolute */
|
| 1371 |
|
|
vc->vc_decom = on_off;
|
| 1372 |
|
|
gotoxay(vc, 0, 0);
|
| 1373 |
|
|
break;
|
| 1374 |
|
|
case 7: /* Autowrap on/off */
|
| 1375 |
|
|
vc->vc_decawm = on_off;
|
| 1376 |
|
|
break;
|
| 1377 |
|
|
case 8: /* Autorepeat on/off */
|
| 1378 |
|
|
if (on_off)
|
| 1379 |
|
|
set_kbd(vc, decarm);
|
| 1380 |
|
|
else
|
| 1381 |
|
|
clr_kbd(vc, decarm);
|
| 1382 |
|
|
break;
|
| 1383 |
|
|
case 9:
|
| 1384 |
|
|
vc->vc_report_mouse = on_off ? 1 : 0;
|
| 1385 |
|
|
break;
|
| 1386 |
|
|
case 25: /* Cursor on/off */
|
| 1387 |
|
|
vc->vc_deccm = on_off;
|
| 1388 |
|
|
break;
|
| 1389 |
|
|
case 1000:
|
| 1390 |
|
|
vc->vc_report_mouse = on_off ? 2 : 0;
|
| 1391 |
|
|
break;
|
| 1392 |
|
|
}
|
| 1393 |
|
|
} else {
|
| 1394 |
|
|
switch(vc->vc_par[i]) { /* ANSI modes set/reset */
|
| 1395 |
|
|
case 3: /* Monitor (display ctrls) */
|
| 1396 |
|
|
vc->vc_disp_ctrl = on_off;
|
| 1397 |
|
|
break;
|
| 1398 |
|
|
case 4: /* Insert Mode on/off */
|
| 1399 |
|
|
vc->vc_decim = on_off;
|
| 1400 |
|
|
break;
|
| 1401 |
|
|
case 20: /* Lf, Enter == CrLf/Lf */
|
| 1402 |
|
|
if (on_off)
|
| 1403 |
|
|
set_kbd(vc, lnm);
|
| 1404 |
|
|
else
|
| 1405 |
|
|
clr_kbd(vc, lnm);
|
| 1406 |
|
|
break;
|
| 1407 |
|
|
}
|
| 1408 |
|
|
}
|
| 1409 |
|
|
}
|
| 1410 |
|
|
|
| 1411 |
|
|
/* console_sem is held */
|
| 1412 |
|
|
static void setterm_command(struct vc_data *vc)
|
| 1413 |
|
|
{
|
| 1414 |
|
|
switch(vc->vc_par[0]) {
|
| 1415 |
|
|
case 1: /* set color for underline mode */
|
| 1416 |
|
|
if (vc->vc_can_do_color &&
|
| 1417 |
|
|
vc->vc_par[1] < 16) {
|
| 1418 |
|
|
vc->vc_ulcolor = color_table[vc->vc_par[1]];
|
| 1419 |
|
|
if (vc->vc_underline)
|
| 1420 |
|
|
update_attr(vc);
|
| 1421 |
|
|
}
|
| 1422 |
|
|
break;
|
| 1423 |
|
|
case 2: /* set color for half intensity mode */
|
| 1424 |
|
|
if (vc->vc_can_do_color &&
|
| 1425 |
|
|
vc->vc_par[1] < 16) {
|
| 1426 |
|
|
vc->vc_halfcolor = color_table[vc->vc_par[1]];
|
| 1427 |
|
|
if (vc->vc_intensity == 0)
|
| 1428 |
|
|
update_attr(vc);
|
| 1429 |
|
|
}
|
| 1430 |
|
|
break;
|
| 1431 |
|
|
case 8: /* store colors as defaults */
|
| 1432 |
|
|
vc->vc_def_color = vc->vc_attr;
|
| 1433 |
|
|
if (vc->vc_hi_font_mask == 0x100)
|
| 1434 |
|
|
vc->vc_def_color >>= 1;
|
| 1435 |
|
|
default_attr(vc);
|
| 1436 |
|
|
update_attr(vc);
|
| 1437 |
|
|
break;
|
| 1438 |
|
|
case 9: /* set blanking interval */
|
| 1439 |
|
|
blankinterval = ((vc->vc_par[1] < 60) ? vc->vc_par[1] : 60) * 60 * HZ;
|
| 1440 |
|
|
poke_blanked_console();
|
| 1441 |
|
|
break;
|
| 1442 |
|
|
case 10: /* set bell frequency in Hz */
|
| 1443 |
|
|
if (vc->vc_npar >= 1)
|
| 1444 |
|
|
vc->vc_bell_pitch = vc->vc_par[1];
|
| 1445 |
|
|
else
|
| 1446 |
|
|
vc->vc_bell_pitch = DEFAULT_BELL_PITCH;
|
| 1447 |
|
|
break;
|
| 1448 |
|
|
case 11: /* set bell duration in msec */
|
| 1449 |
|
|
if (vc->vc_npar >= 1)
|
| 1450 |
|
|
vc->vc_bell_duration = (vc->vc_par[1] < 2000) ?
|
| 1451 |
|
|
vc->vc_par[1] * HZ / 1000 : 0;
|
| 1452 |
|
|
else
|
| 1453 |
|
|
vc->vc_bell_duration = DEFAULT_BELL_DURATION;
|
| 1454 |
|
|
break;
|
| 1455 |
|
|
case 12: /* bring specified console to the front */
|
| 1456 |
|
|
if (vc->vc_par[1] >= 1 && vc_cons_allocated(vc->vc_par[1] - 1))
|
| 1457 |
|
|
set_console(vc->vc_par[1] - 1);
|
| 1458 |
|
|
break;
|
| 1459 |
|
|
case 13: /* unblank the screen */
|
| 1460 |
|
|
poke_blanked_console();
|
| 1461 |
|
|
break;
|
| 1462 |
|
|
case 14: /* set vesa powerdown interval */
|
| 1463 |
|
|
vesa_off_interval = ((vc->vc_par[1] < 60) ? vc->vc_par[1] : 60) * 60 * HZ;
|
| 1464 |
|
|
break;
|
| 1465 |
|
|
case 15: /* activate the previous console */
|
| 1466 |
|
|
set_console(last_console);
|
| 1467 |
|
|
break;
|
| 1468 |
|
|
}
|
| 1469 |
|
|
}
|
| 1470 |
|
|
|
| 1471 |
|
|
/* console_sem is held */
|
| 1472 |
|
|
static void csi_at(struct vc_data *vc, unsigned int nr)
|
| 1473 |
|
|
{
|
| 1474 |
|
|
if (nr > vc->vc_cols - vc->vc_x)
|
| 1475 |
|
|
nr = vc->vc_cols - vc->vc_x;
|
| 1476 |
|
|
else if (!nr)
|
| 1477 |
|
|
nr = 1;
|
| 1478 |
|
|
insert_char(vc, nr);
|
| 1479 |
|
|
}
|
| 1480 |
|
|
|
| 1481 |
|
|
/* console_sem is held */
|
| 1482 |
|
|
static void csi_L(struct vc_data *vc, unsigned int nr)
|
| 1483 |
|
|
{
|
| 1484 |
|
|
if (nr > vc->vc_rows - vc->vc_y)
|
| 1485 |
|
|
nr = vc->vc_rows - vc->vc_y;
|
| 1486 |
|
|
else if (!nr)
|
| 1487 |
|
|
nr = 1;
|
| 1488 |
|
|
scrdown(vc, vc->vc_y, vc->vc_bottom, nr);
|
| 1489 |
|
|
vc->vc_need_wrap = 0;
|
| 1490 |
|
|
}
|
| 1491 |
|
|
|
| 1492 |
|
|
/* console_sem is held */
|
| 1493 |
|
|
static void csi_P(struct vc_data *vc, unsigned int nr)
|
| 1494 |
|
|
{
|
| 1495 |
|
|
if (nr > vc->vc_cols - vc->vc_x)
|
| 1496 |
|
|
nr = vc->vc_cols - vc->vc_x;
|
| 1497 |
|
|
else if (!nr)
|
| 1498 |
|
|
nr = 1;
|
| 1499 |
|
|
delete_char(vc, nr);
|
| 1500 |
|
|
}
|
| 1501 |
|
|
|
| 1502 |
|
|
/* console_sem is held */
|
| 1503 |
|
|
static void csi_M(struct vc_data *vc, unsigned int nr)
|
| 1504 |
|
|
{
|
| 1505 |
|
|
if (nr > vc->vc_rows - vc->vc_y)
|
| 1506 |
|
|
nr = vc->vc_rows - vc->vc_y;
|
| 1507 |
|
|
else if (!nr)
|
| 1508 |
|
|
nr=1;
|
| 1509 |
|
|
scrup(vc, vc->vc_y, vc->vc_bottom, nr);
|
| 1510 |
|
|
vc->vc_need_wrap = 0;
|
| 1511 |
|
|
}
|
| 1512 |
|
|
|
| 1513 |
|
|
/* console_sem is held (except via vc_init->reset_terminal */
|
| 1514 |
|
|
static void save_cur(struct vc_data *vc)
|
| 1515 |
|
|
{
|
| 1516 |
|
|
vc->vc_saved_x = vc->vc_x;
|
| 1517 |
|
|
vc->vc_saved_y = vc->vc_y;
|
| 1518 |
|
|
vc->vc_s_intensity = vc->vc_intensity;
|
| 1519 |
|
|
vc->vc_s_italic = vc->vc_italic;
|
| 1520 |
|
|
vc->vc_s_underline = vc->vc_underline;
|
| 1521 |
|
|
vc->vc_s_blink = vc->vc_blink;
|
| 1522 |
|
|
vc->vc_s_reverse = vc->vc_reverse;
|
| 1523 |
|
|
vc->vc_s_charset = vc->vc_charset;
|
| 1524 |
|
|
vc->vc_s_color = vc->vc_color;
|
| 1525 |
|
|
vc->vc_saved_G0 = vc->vc_G0_charset;
|
| 1526 |
|
|
vc->vc_saved_G1 = vc->vc_G1_charset;
|
| 1527 |
|
|
}
|
| 1528 |
|
|
|
| 1529 |
|
|
/* console_sem is held */
|
| 1530 |
|
|
static void restore_cur(struct vc_data *vc)
|
| 1531 |
|
|
{
|
| 1532 |
|
|
gotoxy(vc, vc->vc_saved_x, vc->vc_saved_y);
|
| 1533 |
|
|
vc->vc_intensity = vc->vc_s_intensity;
|
| 1534 |
|
|
vc->vc_italic = vc->vc_s_italic;
|
| 1535 |
|
|
vc->vc_underline = vc->vc_s_underline;
|
| 1536 |
|
|
vc->vc_blink = vc->vc_s_blink;
|
| 1537 |
|
|
vc->vc_reverse = vc->vc_s_reverse;
|
| 1538 |
|
|
vc->vc_charset = vc->vc_s_charset;
|
| 1539 |
|
|
vc->vc_color = vc->vc_s_color;
|
| 1540 |
|
|
vc->vc_G0_charset = vc->vc_saved_G0;
|
| 1541 |
|
|
vc->vc_G1_charset = vc->vc_saved_G1;
|
| 1542 |
|
|
vc->vc_translate = set_translate(vc->vc_charset ? vc->vc_G1_charset : vc->vc_G0_charset, vc);
|
| 1543 |
|
|
update_attr(vc);
|
| 1544 |
|
|
vc->vc_need_wrap = 0;
|
| 1545 |
|
|
}
|
| 1546 |
|
|
|
| 1547 |
|
|
enum { ESnormal, ESesc, ESsquare, ESgetpars, ESgotpars, ESfunckey,
|
| 1548 |
|
|
EShash, ESsetG0, ESsetG1, ESpercent, ESignore, ESnonstd,
|
| 1549 |
|
|
ESpalette };
|
| 1550 |
|
|
|
| 1551 |
|
|
/* console_sem is held (except via vc_init()) */
|
| 1552 |
|
|
static void reset_terminal(struct vc_data *vc, int do_clear)
|
| 1553 |
|
|
{
|
| 1554 |
|
|
vc->vc_top = 0;
|
| 1555 |
|
|
vc->vc_bottom = vc->vc_rows;
|
| 1556 |
|
|
vc->vc_state = ESnormal;
|
| 1557 |
|
|
vc->vc_ques = 0;
|
| 1558 |
|
|
vc->vc_translate = set_translate(LAT1_MAP, vc);
|
| 1559 |
|
|
vc->vc_G0_charset = LAT1_MAP;
|
| 1560 |
|
|
vc->vc_G1_charset = GRAF_MAP;
|
| 1561 |
|
|
vc->vc_charset = 0;
|
| 1562 |
|
|
vc->vc_need_wrap = 0;
|
| 1563 |
|
|
vc->vc_report_mouse = 0;
|
| 1564 |
|
|
vc->vc_utf = default_utf8;
|
| 1565 |
|
|
vc->vc_utf_count = 0;
|
| 1566 |
|
|
|
| 1567 |
|
|
vc->vc_disp_ctrl = 0;
|
| 1568 |
|
|
vc->vc_toggle_meta = 0;
|
| 1569 |
|
|
|
| 1570 |
|
|
vc->vc_decscnm = 0;
|
| 1571 |
|
|
vc->vc_decom = 0;
|
| 1572 |
|
|
vc->vc_decawm = 1;
|
| 1573 |
|
|
vc->vc_deccm = 1;
|
| 1574 |
|
|
vc->vc_decim = 0;
|
| 1575 |
|
|
|
| 1576 |
|
|
set_kbd(vc, decarm);
|
| 1577 |
|
|
clr_kbd(vc, decckm);
|
| 1578 |
|
|
clr_kbd(vc, kbdapplic);
|
| 1579 |
|
|
clr_kbd(vc, lnm);
|
| 1580 |
|
|
kbd_table[vc->vc_num].lockstate = 0;
|
| 1581 |
|
|
kbd_table[vc->vc_num].slockstate = 0;
|
| 1582 |
|
|
kbd_table[vc->vc_num].ledmode = LED_SHOW_FLAGS;
|
| 1583 |
|
|
kbd_table[vc->vc_num].ledflagstate = kbd_table[vc->vc_num].default_ledflagstate;
|
| 1584 |
|
|
/* do not do set_leds here because this causes an endless tasklet loop
|
| 1585 |
|
|
when the keyboard hasn't been initialized yet */
|
| 1586 |
|
|
|
| 1587 |
|
|
vc->vc_cursor_type = CUR_DEFAULT;
|
| 1588 |
|
|
vc->vc_complement_mask = vc->vc_s_complement_mask;
|
| 1589 |
|
|
|
| 1590 |
|
|
default_attr(vc);
|
| 1591 |
|
|
update_attr(vc);
|
| 1592 |
|
|
|
| 1593 |
|
|
vc->vc_tab_stop[0] = 0x01010100;
|
| 1594 |
|
|
vc->vc_tab_stop[1] =
|
| 1595 |
|
|
vc->vc_tab_stop[2] =
|
| 1596 |
|
|
vc->vc_tab_stop[3] =
|
| 1597 |
|
|
vc->vc_tab_stop[4] = 0x01010101;
|
| 1598 |
|
|
|
| 1599 |
|
|
vc->vc_bell_pitch = DEFAULT_BELL_PITCH;
|
| 1600 |
|
|
vc->vc_bell_duration = DEFAULT_BELL_DURATION;
|
| 1601 |
|
|
|
| 1602 |
|
|
gotoxy(vc, 0, 0);
|
| 1603 |
|
|
save_cur(vc);
|
| 1604 |
|
|
if (do_clear)
|
| 1605 |
|
|
csi_J(vc, 2);
|
| 1606 |
|
|
}
|
| 1607 |
|
|
|
| 1608 |
|
|
/* console_sem is held */
|
| 1609 |
|
|
static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
|
| 1610 |
|
|
{
|
| 1611 |
|
|
/*
|
| 1612 |
|
|
* Control characters can be used in the _middle_
|
| 1613 |
|
|
* of an escape sequence.
|
| 1614 |
|
|
*/
|
| 1615 |
|
|
switch (c) {
|
| 1616 |
|
|
case 0:
|
| 1617 |
|
|
return;
|
| 1618 |
|
|
case 7:
|
| 1619 |
|
|
if (vc->vc_bell_duration)
|
| 1620 |
|
|
kd_mksound(vc->vc_bell_pitch, vc->vc_bell_duration);
|
| 1621 |
|
|
return;
|
| 1622 |
|
|
case 8:
|
| 1623 |
|
|
bs(vc);
|
| 1624 |
|
|
return;
|
| 1625 |
|
|
case 9:
|
| 1626 |
|
|
vc->vc_pos -= (vc->vc_x << 1);
|
| 1627 |
|
|
while (vc->vc_x < vc->vc_cols - 1) {
|
| 1628 |
|
|
vc->vc_x++;
|
| 1629 |
|
|
if (vc->vc_tab_stop[vc->vc_x >> 5] & (1 << (vc->vc_x & 31)))
|
| 1630 |
|
|
break;
|
| 1631 |
|
|
}
|
| 1632 |
|
|
vc->vc_pos += (vc->vc_x << 1);
|
| 1633 |
|
|
notify_write(vc, '\t');
|
| 1634 |
|
|
return;
|
| 1635 |
|
|
case 10: case 11: case 12:
|
| 1636 |
|
|
lf(vc);
|
| 1637 |
|
|
if (!is_kbd(vc, lnm))
|
| 1638 |
|
|
return;
|
| 1639 |
|
|
case 13:
|
| 1640 |
|
|
cr(vc);
|
| 1641 |
|
|
return;
|
| 1642 |
|
|
case 14:
|
| 1643 |
|
|
vc->vc_charset = 1;
|
| 1644 |
|
|
vc->vc_translate = set_translate(vc->vc_G1_charset, vc);
|
| 1645 |
|
|
vc->vc_disp_ctrl = 1;
|
| 1646 |
|
|
return;
|
| 1647 |
|
|
case 15:
|
| 1648 |
|
|
vc->vc_charset = 0;
|
| 1649 |
|
|
vc->vc_translate = set_translate(vc->vc_G0_charset, vc);
|
| 1650 |
|
|
vc->vc_disp_ctrl = 0;
|
| 1651 |
|
|
return;
|
| 1652 |
|
|
case 24: case 26:
|
| 1653 |
|
|
vc->vc_state = ESnormal;
|
| 1654 |
|
|
return;
|
| 1655 |
|
|
case 27:
|
| 1656 |
|
|
vc->vc_state = ESesc;
|
| 1657 |
|
|
return;
|
| 1658 |
|
|
case 127:
|
| 1659 |
|
|
del(vc);
|
| 1660 |
|
|
return;
|
| 1661 |
|
|
case 128+27:
|
| 1662 |
|
|
vc->vc_state = ESsquare;
|
| 1663 |
|
|
return;
|
| 1664 |
|
|
}
|
| 1665 |
|
|
switch(vc->vc_state) {
|
| 1666 |
|
|
case ESesc:
|
| 1667 |
|
|
vc->vc_state = ESnormal;
|
| 1668 |
|
|
switch (c) {
|
| 1669 |
|
|
case '[':
|
| 1670 |
|
|
vc->vc_state = ESsquare;
|
| 1671 |
|
|
return;
|
| 1672 |
|
|
case ']':
|
| 1673 |
|
|
vc->vc_state = ESnonstd;
|
| 1674 |
|
|
return;
|
| 1675 |
|
|
case '%':
|
| 1676 |
|
|
vc->vc_state = ESpercent;
|
| 1677 |
|
|
return;
|
| 1678 |
|
|
case 'E':
|
| 1679 |
|
|
cr(vc);
|
| 1680 |
|
|
lf(vc);
|
| 1681 |
|
|
return;
|
| 1682 |
|
|
case 'M':
|
| 1683 |
|
|
ri(vc);
|
| 1684 |
|
|
return;
|
| 1685 |
|
|
case 'D':
|
| 1686 |
|
|
lf(vc);
|
| 1687 |
|
|
return;
|
| 1688 |
|
|
case 'H':
|
| 1689 |
|
|
vc->vc_tab_stop[vc->vc_x >> 5] |= (1 << (vc->vc_x & 31));
|
| 1690 |
|
|
return;
|
| 1691 |
|
|
case 'Z':
|
| 1692 |
|
|
respond_ID(tty);
|
| 1693 |
|
|
return;
|
| 1694 |
|
|
case '7':
|
| 1695 |
|
|
save_cur(vc);
|
| 1696 |
|
|
return;
|
| 1697 |
|
|
case '8':
|
| 1698 |
|
|
restore_cur(vc);
|
| 1699 |
|
|
return;
|
| 1700 |
|
|
case '(':
|
| 1701 |
|
|
vc->vc_state = ESsetG0;
|
| 1702 |
|
|
return;
|
| 1703 |
|
|
case ')':
|
| 1704 |
|
|
vc->vc_state = ESsetG1;
|
| 1705 |
|
|
return;
|
| 1706 |
|
|
case '#':
|
| 1707 |
|
|
vc->vc_state = EShash;
|
| 1708 |
|
|
return;
|
| 1709 |
|
|
case 'c':
|
| 1710 |
|
|
reset_terminal(vc, 1);
|
| 1711 |
|
|
return;
|
| 1712 |
|
|
case '>': /* Numeric keypad */
|
| 1713 |
|
|
clr_kbd(vc, kbdapplic);
|
| 1714 |
|
|
return;
|
| 1715 |
|
|
case '=': /* Appl. keypad */
|
| 1716 |
|
|
set_kbd(vc, kbdapplic);
|
| 1717 |
|
|
return;
|
| 1718 |
|
|
}
|
| 1719 |
|
|
return;
|
| 1720 |
|
|
case ESnonstd:
|
| 1721 |
|
|
if (c=='P') { /* palette escape sequence */
|
| 1722 |
|
|
for (vc->vc_npar = 0; vc->vc_npar < NPAR; vc->vc_npar++)
|
| 1723 |
|
|
vc->vc_par[vc->vc_npar] = 0;
|
| 1724 |
|
|
vc->vc_npar = 0;
|
| 1725 |
|
|
vc->vc_state = ESpalette;
|
| 1726 |
|
|
return;
|
| 1727 |
|
|
} else if (c=='R') { /* reset palette */
|
| 1728 |
|
|
reset_palette(vc);
|
| 1729 |
|
|
vc->vc_state = ESnormal;
|
| 1730 |
|
|
} else
|
| 1731 |
|
|
vc->vc_state = ESnormal;
|
| 1732 |
|
|
return;
|
| 1733 |
|
|
case ESpalette:
|
| 1734 |
|
|
if ( (c>='0'&&c<='9') || (c>='A'&&c<='F') || (c>='a'&&c<='f') ) {
|
| 1735 |
|
|
vc->vc_par[vc->vc_npar++] = (c > '9' ? (c & 0xDF) - 'A' + 10 : c - '0');
|
| 1736 |
|
|
if (vc->vc_npar == 7) {
|
| 1737 |
|
|
int i = vc->vc_par[0] * 3, j = 1;
|
| 1738 |
|
|
vc->vc_palette[i] = 16 * vc->vc_par[j++];
|
| 1739 |
|
|
vc->vc_palette[i++] += vc->vc_par[j++];
|
| 1740 |
|
|
vc->vc_palette[i] = 16 * vc->vc_par[j++];
|
| 1741 |
|
|
vc->vc_palette[i++] += vc->vc_par[j++];
|
| 1742 |
|
|
vc->vc_palette[i] = 16 * vc->vc_par[j++];
|
| 1743 |
|
|
vc->vc_palette[i] += vc->vc_par[j];
|
| 1744 |
|
|
set_palette(vc);
|
| 1745 |
|
|
vc->vc_state = ESnormal;
|
| 1746 |
|
|
}
|
| 1747 |
|
|
} else
|
| 1748 |
|
|
vc->vc_state = ESnormal;
|
| 1749 |
|
|
return;
|
| 1750 |
|
|
case ESsquare:
|
| 1751 |
|
|
for (vc->vc_npar = 0; vc->vc_npar < NPAR; vc->vc_npar++)
|
| 1752 |
|
|
vc->vc_par[vc->vc_npar] = 0;
|
| 1753 |
|
|
vc->vc_npar = 0;
|
| 1754 |
|
|
vc->vc_state = ESgetpars;
|
| 1755 |
|
|
if (c == '[') { /* Function key */
|
| 1756 |
|
|
vc->vc_state=ESfunckey;
|
| 1757 |
|
|
return;
|
| 1758 |
|
|
}
|
| 1759 |
|
|
vc->vc_ques = (c == '?');
|
| 1760 |
|
|
if (vc->vc_ques)
|
| 1761 |
|
|
return;
|
| 1762 |
|
|
case ESgetpars:
|
| 1763 |
|
|
if (c == ';' && vc->vc_npar < NPAR - 1) {
|
| 1764 |
|
|
vc->vc_npar++;
|
| 1765 |
|
|
return;
|
| 1766 |
|
|
} else if (c>='0' && c<='9') {
|
| 1767 |
|
|
vc->vc_par[vc->vc_npar] *= 10;
|
| 1768 |
|
|
vc->vc_par[vc->vc_npar] += c - '0';
|
| 1769 |
|
|
return;
|
| 1770 |
|
|
} else
|
| 1771 |
|
|
vc->vc_state = ESgotpars;
|
| 1772 |
|
|
case ESgotpars:
|
| 1773 |
|
|
vc->vc_state = ESnormal;
|
| 1774 |
|
|
switch(c) {
|
| 1775 |
|
|
case 'h':
|
| 1776 |
|
|
set_mode(vc, 1);
|
| 1777 |
|
|
return;
|
| 1778 |
|
|
case 'l':
|
| 1779 |
|
|
set_mode(vc, 0);
|
| 1780 |
|
|
return;
|
| 1781 |
|
|
case 'c':
|
| 1782 |
|
|
if (vc->vc_ques) {
|
| 1783 |
|
|
if (vc->vc_par[0])
|
| 1784 |
|
|
vc->vc_cursor_type = vc->vc_par[0] | (vc->vc_par[1] << 8) | (vc->vc_par[2] << 16);
|
| 1785 |
|
|
else
|
| 1786 |
|
|
vc->vc_cursor_type = CUR_DEFAULT;
|
| 1787 |
|
|
return;
|
| 1788 |
|
|
}
|
| 1789 |
|
|
break;
|
| 1790 |
|
|
case 'm':
|
| 1791 |
|
|
if (vc->vc_ques) {
|
| 1792 |
|
|
clear_selection();
|
| 1793 |
|
|
if (vc->vc_par[0])
|
| 1794 |
|
|
vc->vc_complement_mask = vc->vc_par[0] << 8 | vc->vc_par[1];
|
| 1795 |
|
|
else
|
| 1796 |
|
|
vc->vc_complement_mask = vc->vc_s_complement_mask;
|
| 1797 |
|
|
return;
|
| 1798 |
|
|
}
|
| 1799 |
|
|
break;
|
| 1800 |
|
|
case 'n':
|
| 1801 |
|
|
if (!vc->vc_ques) {
|
| 1802 |
|
|
if (vc->vc_par[0] == 5)
|
| 1803 |
|
|
status_report(tty);
|
| 1804 |
|
|
else if (vc->vc_par[0] == 6)
|
| 1805 |
|
|
cursor_report(vc, tty);
|
| 1806 |
|
|
}
|
| 1807 |
|
|
return;
|
| 1808 |
|
|
}
|
| 1809 |
|
|
if (vc->vc_ques) {
|
| 1810 |
|
|
vc->vc_ques = 0;
|
| 1811 |
|
|
return;
|
| 1812 |
|
|
}
|
| 1813 |
|
|
switch(c) {
|
| 1814 |
|
|
case 'G': case '`':
|
| 1815 |
|
|
if (vc->vc_par[0])
|
| 1816 |
|
|
vc->vc_par[0]--;
|
| 1817 |
|
|
gotoxy(vc, vc->vc_par[0], vc->vc_y);
|
| 1818 |
|
|
return;
|
| 1819 |
|
|
case 'A':
|
| 1820 |
|
|
if (!vc->vc_par[0])
|
| 1821 |
|
|
vc->vc_par[0]++;
|
| 1822 |
|
|
gotoxy(vc, vc->vc_x, vc->vc_y - vc->vc_par[0]);
|
| 1823 |
|
|
return;
|
| 1824 |
|
|
case 'B': case 'e':
|
| 1825 |
|
|
if (!vc->vc_par[0])
|
| 1826 |
|
|
vc->vc_par[0]++;
|
| 1827 |
|
|
gotoxy(vc, vc->vc_x, vc->vc_y + vc->vc_par[0]);
|
| 1828 |
|
|
return;
|
| 1829 |
|
|
case 'C': case 'a':
|
| 1830 |
|
|
if (!vc->vc_par[0])
|
| 1831 |
|
|
vc->vc_par[0]++;
|
| 1832 |
|
|
gotoxy(vc, vc->vc_x + vc->vc_par[0], vc->vc_y);
|
| 1833 |
|
|
return;
|
| 1834 |
|
|
case 'D':
|
| 1835 |
|
|
if (!vc->vc_par[0])
|
| 1836 |
|
|
vc->vc_par[0]++;
|
| 1837 |
|
|
gotoxy(vc, vc->vc_x - vc->vc_par[0], vc->vc_y);
|
| 1838 |
|
|
return;
|
| 1839 |
|
|
case 'E':
|
| 1840 |
|
|
if (!vc->vc_par[0])
|
| 1841 |
|
|
vc->vc_par[0]++;
|
| 1842 |
|
|
gotoxy(vc, 0, vc->vc_y + vc->vc_par[0]);
|
| 1843 |
|
|
return;
|
| 1844 |
|
|
case 'F':
|
| 1845 |
|
|
if (!vc->vc_par[0])
|
| 1846 |
|
|
vc->vc_par[0]++;
|
| 1847 |
|
|
gotoxy(vc, 0, vc->vc_y - vc->vc_par[0]);
|
| 1848 |
|
|
return;
|
| 1849 |
|
|
case 'd':
|
| 1850 |
|
|
if (vc->vc_par[0])
|
| 1851 |
|
|
vc->vc_par[0]--;
|
| 1852 |
|
|
gotoxay(vc, vc->vc_x ,vc->vc_par[0]);
|
| 1853 |
|
|
return;
|
| 1854 |
|
|
case 'H': case 'f':
|
| 1855 |
|
|
if (vc->vc_par[0])
|
| 1856 |
|
|
vc->vc_par[0]--;
|
| 1857 |
|
|
if (vc->vc_par[1])
|
| 1858 |
|
|
vc->vc_par[1]--;
|
| 1859 |
|
|
gotoxay(vc, vc->vc_par[1], vc->vc_par[0]);
|
| 1860 |
|
|
return;
|
| 1861 |
|
|
case 'J':
|
| 1862 |
|
|
csi_J(vc, vc->vc_par[0]);
|
| 1863 |
|
|
return;
|
| 1864 |
|
|
case 'K':
|
| 1865 |
|
|
csi_K(vc, vc->vc_par[0]);
|
| 1866 |
|
|
return;
|
| 1867 |
|
|
case 'L':
|
| 1868 |
|
|
csi_L(vc, vc->vc_par[0]);
|
| 1869 |
|
|
return;
|
| 1870 |
|
|
case 'M':
|
| 1871 |
|
|
csi_M(vc, vc->vc_par[0]);
|
| 1872 |
|
|
return;
|
| 1873 |
|
|
case 'P':
|
| 1874 |
|
|
csi_P(vc, vc->vc_par[0]);
|
| 1875 |
|
|
return;
|
| 1876 |
|
|
case 'c':
|
| 1877 |
|
|
if (!vc->vc_par[0])
|
| 1878 |
|
|
respond_ID(tty);
|
| 1879 |
|
|
return;
|
| 1880 |
|
|
case 'g':
|
| 1881 |
|
|
if (!vc->vc_par[0])
|
| 1882 |
|
|
vc->vc_tab_stop[vc->vc_x >> 5] &= ~(1 << (vc->vc_x & 31));
|
| 1883 |
|
|
else if (vc->vc_par[0] == 3) {
|
| 1884 |
|
|
vc->vc_tab_stop[0] =
|
| 1885 |
|
|
vc->vc_tab_stop[1] =
|
| 1886 |
|
|
vc->vc_tab_stop[2] =
|
| 1887 |
|
|
vc->vc_tab_stop[3] =
|
| 1888 |
|
|
vc->vc_tab_stop[4] = 0;
|
| 1889 |
|
|
}
|
| 1890 |
|
|
return;
|
| 1891 |
|
|
case 'm':
|
| 1892 |
|
|
csi_m(vc);
|
| 1893 |
|
|
return;
|
| 1894 |
|
|
case 'q': /* DECLL - but only 3 leds */
|
| 1895 |
|
|
/* map 0,1,2,3 to 0,1,2,4 */
|
| 1896 |
|
|
if (vc->vc_par[0] < 4)
|
| 1897 |
|
|
setledstate(kbd_table + vc->vc_num,
|
| 1898 |
|
|
(vc->vc_par[0] < 3) ? vc->vc_par[0] : 4);
|
| 1899 |
|
|
return;
|
| 1900 |
|
|
case 'r':
|
| 1901 |
|
|
if (!vc->vc_par[0])
|
| 1902 |
|
|
vc->vc_par[0]++;
|
| 1903 |
|
|
if (!vc->vc_par[1])
|
| 1904 |
|
|
vc->vc_par[1] = vc->vc_rows;
|
| 1905 |
|
|
/* Minimum allowed region is 2 lines */
|
| 1906 |
|
|
if (vc->vc_par[0] < vc->vc_par[1] &&
|
| 1907 |
|
|
vc->vc_par[1] <= vc->vc_rows) {
|
| 1908 |
|
|
vc->vc_top = vc->vc_par[0] - 1;
|
| 1909 |
|
|
vc->vc_bottom = vc->vc_par[1];
|
| 1910 |
|
|
gotoxay(vc, 0, 0);
|
| 1911 |
|
|
}
|
| 1912 |
|
|
return;
|
| 1913 |
|
|
case 's':
|
| 1914 |
|
|
save_cur(vc);
|
| 1915 |
|
|
return;
|
| 1916 |
|
|
case 'u':
|
| 1917 |
|
|
restore_cur(vc);
|
| 1918 |
|
|
return;
|
| 1919 |
|
|
case 'X':
|
| 1920 |
|
|
csi_X(vc, vc->vc_par[0]);
|
| 1921 |
|
|
return;
|
| 1922 |
|
|
case '@':
|
| 1923 |
|
|
csi_at(vc, vc->vc_par[0]);
|
| 1924 |
|
|
return;
|
| 1925 |
|
|
case ']': /* setterm functions */
|
| 1926 |
|
|
setterm_command(vc);
|
| 1927 |
|
|
return;
|
| 1928 |
|
|
}
|
| 1929 |
|
|
return;
|
| 1930 |
|
|
case ESpercent:
|
| 1931 |
|
|
vc->vc_state = ESnormal;
|
| 1932 |
|
|
switch (c) {
|
| 1933 |
|
|
case '@': /* defined in ISO 2022 */
|
| 1934 |
|
|
vc->vc_utf = 0;
|
| 1935 |
|
|
return;
|
| 1936 |
|
|
case 'G': /* prelim official escape code */
|
| 1937 |
|
|
case '8': /* retained for compatibility */
|
| 1938 |
|
|
vc->vc_utf = 1;
|
| 1939 |
|
|
return;
|
| 1940 |
|
|
}
|
| 1941 |
|
|
return;
|
| 1942 |
|
|
case ESfunckey:
|
| 1943 |
|
|
vc->vc_state = ESnormal;
|
| 1944 |
|
|
return;
|
| 1945 |
|
|
case EShash:
|
| 1946 |
|
|
vc->vc_state = ESnormal;
|
| 1947 |
|
|
if (c == '8') {
|
| 1948 |
|
|
/* DEC screen alignment test. kludge :-) */
|
| 1949 |
|
|
vc->vc_video_erase_char =
|
| 1950 |
|
|
(vc->vc_video_erase_char & 0xff00) | 'E';
|
| 1951 |
|
|
csi_J(vc, 2);
|
| 1952 |
|
|
vc->vc_video_erase_char =
|
| 1953 |
|
|
(vc->vc_video_erase_char & 0xff00) | ' ';
|
| 1954 |
|
|
do_update_region(vc, vc->vc_origin, vc->vc_screenbuf_size / 2);
|
| 1955 |
|
|
}
|
| 1956 |
|
|
return;
|
| 1957 |
|
|
case ESsetG0:
|
| 1958 |
|
|
if (c == '0')
|
| 1959 |
|
|
vc->vc_G0_charset = GRAF_MAP;
|
| 1960 |
|
|
else if (c == 'B')
|
| 1961 |
|
|
vc->vc_G0_charset = LAT1_MAP;
|
| 1962 |
|
|
else if (c == 'U')
|
| 1963 |
|
|
vc->vc_G0_charset = IBMPC_MAP;
|
| 1964 |
|
|
else if (c == 'K')
|
| 1965 |
|
|
vc->vc_G0_charset = USER_MAP;
|
| 1966 |
|
|
if (vc->vc_charset == 0)
|
| 1967 |
|
|
vc->vc_translate = set_translate(vc->vc_G0_charset, vc);
|
| 1968 |
|
|
vc->vc_state = ESnormal;
|
| 1969 |
|
|
return;
|
| 1970 |
|
|
case ESsetG1:
|
| 1971 |
|
|
if (c == '0')
|
| 1972 |
|
|
vc->vc_G1_charset = GRAF_MAP;
|
| 1973 |
|
|
else if (c == 'B')
|
| 1974 |
|
|
vc->vc_G1_charset = LAT1_MAP;
|
| 1975 |
|
|
else if (c == 'U')
|
| 1976 |
|
|
vc->vc_G1_charset = IBMPC_MAP;
|
| 1977 |
|
|
else if (c == 'K')
|
| 1978 |
|
|
vc->vc_G1_charset = USER_MAP;
|
| 1979 |
|
|
if (vc->vc_charset == 1)
|
| 1980 |
|
|
vc->vc_translate = set_translate(vc->vc_G1_charset, vc);
|
| 1981 |
|
|
vc->vc_state = ESnormal;
|
| 1982 |
|
|
return;
|
| 1983 |
|
|
default:
|
| 1984 |
|
|
vc->vc_state = ESnormal;
|
| 1985 |
|
|
}
|
| 1986 |
|
|
}
|
| 1987 |
|
|
|
| 1988 |
|
|
/* This is a temporary buffer used to prepare a tty console write
|
| 1989 |
|
|
* so that we can easily avoid touching user space while holding the
|
| 1990 |
|
|
* console spinlock. It is allocated in con_init and is shared by
|
| 1991 |
|
|
* this code and the vc_screen read/write tty calls.
|
| 1992 |
|
|
*
|
| 1993 |
|
|
* We have to allocate this statically in the kernel data section
|
| 1994 |
|
|
* since console_init (and thus con_init) are called before any
|
| 1995 |
|
|
* kernel memory allocation is available.
|
| 1996 |
|
|
*/
|
| 1997 |
|
|
char con_buf[CON_BUF_SIZE];
|
| 1998 |
|
|
DEFINE_MUTEX(con_buf_mtx);
|
| 1999 |
|
|
|
| 2000 |
|
|
/* is_double_width() is based on the wcwidth() implementation by
|
| 2001 |
|
|
* Markus Kuhn -- 2007-05-26 (Unicode 5.0)
|
| 2002 |
|
|
* Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
|
| 2003 |
|
|
*/
|
| 2004 |
|
|
struct interval {
|
| 2005 |
|
|
uint32_t first;
|
| 2006 |
|
|
uint32_t last;
|
| 2007 |
|
|
};
|
| 2008 |
|
|
|
| 2009 |
|
|
static int bisearch(uint32_t ucs, const struct interval *table, int max)
|
| 2010 |
|
|
{
|
| 2011 |
|
|
int min = 0;
|
| 2012 |
|
|
int mid;
|
| 2013 |
|
|
|
| 2014 |
|
|
if (ucs < table[0].first || ucs > table[max].last)
|
| 2015 |
|
|
return 0;
|
| 2016 |
|
|
while (max >= min) {
|
| 2017 |
|
|
mid = (min + max) / 2;
|
| 2018 |
|
|
if (ucs > table[mid].last)
|
| 2019 |
|
|
min = mid + 1;
|
| 2020 |
|
|
else if (ucs < table[mid].first)
|
| 2021 |
|
|
max = mid - 1;
|
| 2022 |
|
|
else
|
| 2023 |
|
|
return 1;
|
| 2024 |
|
|
}
|
| 2025 |
|
|
return 0;
|
| 2026 |
|
|
}
|
| 2027 |
|
|
|
| 2028 |
|
|
static int is_double_width(uint32_t ucs)
|
| 2029 |
|
|
{
|
| 2030 |
|
|
static const struct interval double_width[] = {
|
| 2031 |
|
|
{ 0x1100, 0x115F }, { 0x2329, 0x232A }, { 0x2E80, 0x303E },
|
| 2032 |
|
|
{ 0x3040, 0xA4CF }, { 0xAC00, 0xD7A3 }, { 0xF900, 0xFAFF },
|
| 2033 |
|
|
{ 0xFE10, 0xFE19 }, { 0xFE30, 0xFE6F }, { 0xFF00, 0xFF60 },
|
| 2034 |
|
|
{ 0xFFE0, 0xFFE6 }, { 0x20000, 0x2FFFD }, { 0x30000, 0x3FFFD }
|
| 2035 |
|
|
};
|
| 2036 |
|
|
return bisearch(ucs, double_width, ARRAY_SIZE(double_width) - 1);
|
| 2037 |
|
|
}
|
| 2038 |
|
|
|
| 2039 |
|
|
/* acquires console_sem */
|
| 2040 |
|
|
static int do_con_write(struct tty_struct *tty, const unsigned char *buf, int count)
|
| 2041 |
|
|
{
|
| 2042 |
|
|
#ifdef VT_BUF_VRAM_ONLY
|
| 2043 |
|
|
#define FLUSH do { } while(0);
|
| 2044 |
|
|
#else
|
| 2045 |
|
|
#define FLUSH if (draw_x >= 0) { \
|
| 2046 |
|
|
vc->vc_sw->con_putcs(vc, (u16 *)draw_from, (u16 *)draw_to - (u16 *)draw_from, vc->vc_y, draw_x); \
|
| 2047 |
|
|
draw_x = -1; \
|
| 2048 |
|
|
}
|
| 2049 |
|
|
#endif
|
| 2050 |
|
|
|
| 2051 |
|
|
int c, tc, ok, n = 0, draw_x = -1;
|
| 2052 |
|
|
unsigned int currcons;
|
| 2053 |
|
|
unsigned long draw_from = 0, draw_to = 0;
|
| 2054 |
|
|
struct vc_data *vc;
|
| 2055 |
|
|
unsigned char vc_attr;
|
| 2056 |
|
|
uint8_t rescan;
|
| 2057 |
|
|
uint8_t inverse;
|
| 2058 |
|
|
uint8_t width;
|
| 2059 |
|
|
u16 himask, charmask;
|
| 2060 |
|
|
const unsigned char *orig_buf = NULL;
|
| 2061 |
|
|
int orig_count;
|
| 2062 |
|
|
|
| 2063 |
|
|
if (in_interrupt())
|
| 2064 |
|
|
return count;
|
| 2065 |
|
|
|
| 2066 |
|
|
might_sleep();
|
| 2067 |
|
|
|
| 2068 |
|
|
acquire_console_sem();
|
| 2069 |
|
|
vc = tty->driver_data;
|
| 2070 |
|
|
if (vc == NULL) {
|
| 2071 |
|
|
printk(KERN_ERR "vt: argh, driver_data is NULL !\n");
|
| 2072 |
|
|
release_console_sem();
|
| 2073 |
|
|
return 0;
|
| 2074 |
|
|
}
|
| 2075 |
|
|
|
| 2076 |
|
|
currcons = vc->vc_num;
|
| 2077 |
|
|
if (!vc_cons_allocated(currcons)) {
|
| 2078 |
|
|
/* could this happen? */
|
| 2079 |
|
|
static int error = 0;
|
| 2080 |
|
|
if (!error) {
|
| 2081 |
|
|
error = 1;
|
| 2082 |
|
|
printk("con_write: tty %d not allocated\n", currcons+1);
|
| 2083 |
|
|
}
|
| 2084 |
|
|
release_console_sem();
|
| 2085 |
|
|
return 0;
|
| 2086 |
|
|
}
|
| 2087 |
|
|
release_console_sem();
|
| 2088 |
|
|
|
| 2089 |
|
|
orig_buf = buf;
|
| 2090 |
|
|
orig_count = count;
|
| 2091 |
|
|
|
| 2092 |
|
|
/* At this point 'buf' is guaranteed to be a kernel buffer
|
| 2093 |
|
|
* and therefore no access to userspace (and therefore sleeping)
|
| 2094 |
|
|
* will be needed. The con_buf_mtx serializes all tty based
|
| 2095 |
|
|
* console rendering and vcs write/read operations. We hold
|
| 2096 |
|
|
* the console spinlock during the entire write.
|
| 2097 |
|
|
*/
|
| 2098 |
|
|
|
| 2099 |
|
|
acquire_console_sem();
|
| 2100 |
|
|
|
| 2101 |
|
|
vc = tty->driver_data;
|
| 2102 |
|
|
if (vc == NULL) {
|
| 2103 |
|
|
printk(KERN_ERR "vt: argh, driver_data _became_ NULL !\n");
|
| 2104 |
|
|
release_console_sem();
|
| 2105 |
|
|
goto out;
|
| 2106 |
|
|
}
|
| 2107 |
|
|
|
| 2108 |
|
|
himask = vc->vc_hi_font_mask;
|
| 2109 |
|
|
charmask = himask ? 0x1ff : 0xff;
|
| 2110 |
|
|
|
| 2111 |
|
|
/* undraw cursor first */
|
| 2112 |
|
|
if (IS_FG(vc))
|
| 2113 |
|
|
hide_cursor(vc);
|
| 2114 |
|
|
|
| 2115 |
|
|
while (!tty->stopped && count) {
|
| 2116 |
|
|
int orig = *buf;
|
| 2117 |
|
|
c = orig;
|
| 2118 |
|
|
buf++;
|
| 2119 |
|
|
n++;
|
| 2120 |
|
|
count--;
|
| 2121 |
|
|
rescan = 0;
|
| 2122 |
|
|
inverse = 0;
|
| 2123 |
|
|
width = 1;
|
| 2124 |
|
|
|
| 2125 |
|
|
/* Do no translation at all in control states */
|
| 2126 |
|
|
if (vc->vc_state != ESnormal) {
|
| 2127 |
|
|
tc = c;
|
| 2128 |
|
|
} else if (vc->vc_utf && !vc->vc_disp_ctrl) {
|
| 2129 |
|
|
/* Combine UTF-8 into Unicode in vc_utf_char.
|
| 2130 |
|
|
* vc_utf_count is the number of continuation bytes still
|
| 2131 |
|
|
* expected to arrive.
|
| 2132 |
|
|
* vc_npar is the number of continuation bytes arrived so
|
| 2133 |
|
|
* far
|
| 2134 |
|
|
*/
|
| 2135 |
|
|
rescan_last_byte:
|
| 2136 |
|
|
if ((c & 0xc0) == 0x80) {
|
| 2137 |
|
|
/* Continuation byte received */
|
| 2138 |
|
|
static const uint32_t utf8_length_changes[] = { 0x0000007f, 0x000007ff, 0x0000ffff, 0x001fffff, 0x03ffffff, 0x7fffffff };
|
| 2139 |
|
|
if (vc->vc_utf_count) {
|
| 2140 |
|
|
vc->vc_utf_char = (vc->vc_utf_char << 6) | (c & 0x3f);
|
| 2141 |
|
|
vc->vc_npar++;
|
| 2142 |
|
|
if (--vc->vc_utf_count) {
|
| 2143 |
|
|
/* Still need some bytes */
|
| 2144 |
|
|
continue;
|
| 2145 |
|
|
}
|
| 2146 |
|
|
/* Got a whole character */
|
| 2147 |
|
|
c = vc->vc_utf_char;
|
| 2148 |
|
|
/* Reject overlong sequences */
|
| 2149 |
|
|
if (c <= utf8_length_changes[vc->vc_npar - 1] ||
|
| 2150 |
|
|
c > utf8_length_changes[vc->vc_npar])
|
| 2151 |
|
|
c = 0xfffd;
|
| 2152 |
|
|
} else {
|
| 2153 |
|
|
/* Unexpected continuation byte */
|
| 2154 |
|
|
vc->vc_utf_count = 0;
|
| 2155 |
|
|
c = 0xfffd;
|
| 2156 |
|
|
}
|
| 2157 |
|
|
} else {
|
| 2158 |
|
|
/* Single ASCII byte or first byte of a sequence received */
|
| 2159 |
|
|
if (vc->vc_utf_count) {
|
| 2160 |
|
|
/* Continuation byte expected */
|
| 2161 |
|
|
rescan = 1;
|
| 2162 |
|
|
vc->vc_utf_count = 0;
|
| 2163 |
|
|
c = 0xfffd;
|
| 2164 |
|
|
} else if (c > 0x7f) {
|
| 2165 |
|
|
/* First byte of a multibyte sequence received */
|
| 2166 |
|
|
vc->vc_npar = 0;
|
| 2167 |
|
|
if ((c & 0xe0) == 0xc0) {
|
| 2168 |
|
|
vc->vc_utf_count = 1;
|
| 2169 |
|
|
vc->vc_utf_char = (c & 0x1f);
|
| 2170 |
|
|
} else if ((c & 0xf0) == 0xe0) {
|
| 2171 |
|
|
vc->vc_utf_count = 2;
|
| 2172 |
|
|
vc->vc_utf_char = (c & 0x0f);
|
| 2173 |
|
|
} else if ((c & 0xf8) == 0xf0) {
|
| 2174 |
|
|
vc->vc_utf_count = 3;
|
| 2175 |
|
|
vc->vc_utf_char = (c & 0x07);
|
| 2176 |
|
|
} else if ((c & 0xfc) == 0xf8) {
|
| 2177 |
|
|
vc->vc_utf_count = 4;
|
| 2178 |
|
|
vc->vc_utf_char = (c & 0x03);
|
| 2179 |
|
|
} else if ((c & 0xfe) == 0xfc) {
|
| 2180 |
|
|
vc->vc_utf_count = 5;
|
| 2181 |
|
|
vc->vc_utf_char = (c & 0x01);
|
| 2182 |
|
|
} else {
|
| 2183 |
|
|
/* 254 and 255 are invalid */
|
| 2184 |
|
|
c = 0xfffd;
|
| 2185 |
|
|
}
|
| 2186 |
|
|
if (vc->vc_utf_count) {
|
| 2187 |
|
|
/* Still need some bytes */
|
| 2188 |
|
|
continue;
|
| 2189 |
|
|
}
|
| 2190 |
|
|
}
|
| 2191 |
|
|
/* Nothing to do if an ASCII byte was received */
|
| 2192 |
|
|
}
|
| 2193 |
|
|
/* End of UTF-8 decoding. */
|
| 2194 |
|
|
/* c is the received character, or U+FFFD for invalid sequences. */
|
| 2195 |
|
|
/* Replace invalid Unicode code points with U+FFFD too */
|
| 2196 |
|
|
if ((c >= 0xd800 && c <= 0xdfff) || c == 0xfffe || c == 0xffff)
|
| 2197 |
|
|
c = 0xfffd;
|
| 2198 |
|
|
tc = c;
|
| 2199 |
|
|
} else { /* no utf or alternate charset mode */
|
| 2200 |
|
|
tc = vc->vc_translate[vc->vc_toggle_meta ? (c | 0x80) : c];
|
| 2201 |
|
|
}
|
| 2202 |
|
|
|
| 2203 |
|
|
/* If the original code was a control character we
|
| 2204 |
|
|
* only allow a glyph to be displayed if the code is
|
| 2205 |
|
|
* not normally used (such as for cursor movement) or
|
| 2206 |
|
|
* if the disp_ctrl mode has been explicitly enabled.
|
| 2207 |
|
|
* Certain characters (as given by the CTRL_ALWAYS
|
| 2208 |
|
|
* bitmap) are always displayed as control characters,
|
| 2209 |
|
|
* as the console would be pretty useless without
|
| 2210 |
|
|
* them; to display an arbitrary font position use the
|
| 2211 |
|
|
* direct-to-font zone in UTF-8 mode.
|
| 2212 |
|
|
*/
|
| 2213 |
|
|
ok = tc && (c >= 32 ||
|
| 2214 |
|
|
!(vc->vc_disp_ctrl ? (CTRL_ALWAYS >> c) & 1 :
|
| 2215 |
|
|
vc->vc_utf || ((CTRL_ACTION >> c) & 1)))
|
| 2216 |
|
|
&& (c != 127 || vc->vc_disp_ctrl)
|
| 2217 |
|
|
&& (c != 128+27);
|
| 2218 |
|
|
|
| 2219 |
|
|
if (vc->vc_state == ESnormal && ok) {
|
| 2220 |
|
|
if (vc->vc_utf && !vc->vc_disp_ctrl) {
|
| 2221 |
|
|
if (is_double_width(c))
|
| 2222 |
|
|
width = 2;
|
| 2223 |
|
|
}
|
| 2224 |
|
|
/* Now try to find out how to display it */
|
| 2225 |
|
|
tc = conv_uni_to_pc(vc, tc);
|
| 2226 |
|
|
if (tc & ~charmask) {
|
| 2227 |
|
|
if (tc == -1 || tc == -2) {
|
| 2228 |
|
|
continue; /* nothing to display */
|
| 2229 |
|
|
}
|
| 2230 |
|
|
/* Glyph not found */
|
| 2231 |
|
|
if ((!(vc->vc_utf && !vc->vc_disp_ctrl) || c < 128) && !(c & ~charmask)) {
|
| 2232 |
|
|
/* In legacy mode use the glyph we get by a 1:1 mapping.
|
| 2233 |
|
|
This would make absolutely no sense with Unicode in mind,
|
| 2234 |
|
|
but do this for ASCII characters since a font may lack
|
| 2235 |
|
|
Unicode mapping info and we don't want to end up with
|
| 2236 |
|
|
having question marks only. */
|
| 2237 |
|
|
tc = c;
|
| 2238 |
|
|
} else {
|
| 2239 |
|
|
/* Display U+FFFD. If it's not found, display an inverse question mark. */
|
| 2240 |
|
|
tc = conv_uni_to_pc(vc, 0xfffd);
|
| 2241 |
|
|
if (tc < 0) {
|
| 2242 |
|
|
inverse = 1;
|
| 2243 |
|
|
tc = conv_uni_to_pc(vc, '?');
|
| 2244 |
|
|
if (tc < 0) tc = '?';
|
| 2245 |
|
|
}
|
| 2246 |
|
|
}
|
| 2247 |
|
|
}
|
| 2248 |
|
|
|
| 2249 |
|
|
if (!inverse) {
|
| 2250 |
|
|
vc_attr = vc->vc_attr;
|
| 2251 |
|
|
} else {
|
| 2252 |
|
|
/* invert vc_attr */
|
| 2253 |
|
|
if (!vc->vc_can_do_color) {
|
| 2254 |
|
|
vc_attr = (vc->vc_attr) ^ 0x08;
|
| 2255 |
|
|
} else if (vc->vc_hi_font_mask == 0x100) {
|
| 2256 |
|
|
vc_attr = ((vc->vc_attr) & 0x11) | (((vc->vc_attr) & 0xe0) >> 4) | (((vc->vc_attr) & 0x0e) << 4);
|
| 2257 |
|
|
} else {
|
| 2258 |
|
|
vc_attr = ((vc->vc_attr) & 0x88) | (((vc->vc_attr) & 0x70) >> 4) | (((vc->vc_attr) & 0x07) << 4);
|
| 2259 |
|
|
}
|
| 2260 |
|
|
FLUSH
|
| 2261 |
|
|
}
|
| 2262 |
|
|
|
| 2263 |
|
|
while (1) {
|
| 2264 |
|
|
if (vc->vc_need_wrap || vc->vc_decim)
|
| 2265 |
|
|
FLUSH
|
| 2266 |
|
|
if (vc->vc_need_wrap) {
|
| 2267 |
|
|
cr(vc);
|
| 2268 |
|
|
lf(vc);
|
| 2269 |
|
|
}
|
| 2270 |
|
|
if (vc->vc_decim)
|
| 2271 |
|
|
insert_char(vc, 1);
|
| 2272 |
|
|
scr_writew(himask ?
|
| 2273 |
|
|
((vc_attr << 8) & ~himask) + ((tc & 0x100) ? himask : 0) + (tc & 0xff) :
|
| 2274 |
|
|
(vc_attr << 8) + tc,
|
| 2275 |
|
|
(u16 *) vc->vc_pos);
|
| 2276 |
|
|
if (DO_UPDATE(vc) && draw_x < 0) {
|
| 2277 |
|
|
draw_x = vc->vc_x;
|
| 2278 |
|
|
draw_from = vc->vc_pos;
|
| 2279 |
|
|
}
|
| 2280 |
|
|
if (vc->vc_x == vc->vc_cols - 1) {
|
| 2281 |
|
|
vc->vc_need_wrap = vc->vc_decawm;
|
| 2282 |
|
|
draw_to = vc->vc_pos + 2;
|
| 2283 |
|
|
} else {
|
| 2284 |
|
|
vc->vc_x++;
|
| 2285 |
|
|
draw_to = (vc->vc_pos += 2);
|
| 2286 |
|
|
}
|
| 2287 |
|
|
|
| 2288 |
|
|
if (!--width) break;
|
| 2289 |
|
|
|
| 2290 |
|
|
tc = conv_uni_to_pc(vc, ' '); /* A space is printed in the second column */
|
| 2291 |
|
|
if (tc < 0) tc = ' ';
|
| 2292 |
|
|
}
|
| 2293 |
|
|
notify_write(vc, c);
|
| 2294 |
|
|
|
| 2295 |
|
|
if (inverse) {
|
| 2296 |
|
|
FLUSH
|
| 2297 |
|
|
}
|
| 2298 |
|
|
|
| 2299 |
|
|
if (rescan) {
|
| 2300 |
|
|
rescan = 0;
|
| 2301 |
|
|
inverse = 0;
|
| 2302 |
|
|
width = 1;
|
| 2303 |
|
|
c = orig;
|
| 2304 |
|
|
goto rescan_last_byte;
|
| 2305 |
|
|
}
|
| 2306 |
|
|
continue;
|
| 2307 |
|
|
}
|
| 2308 |
|
|
FLUSH
|
| 2309 |
|
|
do_con_trol(tty, vc, orig);
|
| 2310 |
|
|
}
|
| 2311 |
|
|
FLUSH
|
| 2312 |
|
|
console_conditional_schedule();
|
| 2313 |
|
|
release_console_sem();
|
| 2314 |
|
|
|
| 2315 |
|
|
out:
|
| 2316 |
|
|
notify_update(vc);
|
| 2317 |
|
|
return n;
|
| 2318 |
|
|
#undef FLUSH
|
| 2319 |
|
|
}
|
| 2320 |
|
|
|
| 2321 |
|
|
/*
|
| 2322 |
|
|
* This is the console switching callback.
|
| 2323 |
|
|
*
|
| 2324 |
|
|
* Doing console switching in a process context allows
|
| 2325 |
|
|
* us to do the switches asynchronously (needed when we want
|
| 2326 |
|
|
* to switch due to a keyboard interrupt). Synchronization
|
| 2327 |
|
|
* with other console code and prevention of re-entrancy is
|
| 2328 |
|
|
* ensured with console_sem.
|
| 2329 |
|
|
*/
|
| 2330 |
|
|
static void console_callback(struct work_struct *ignored)
|
| 2331 |
|
|
{
|
| 2332 |
|
|
acquire_console_sem();
|
| 2333 |
|
|
|
| 2334 |
|
|
if (want_console >= 0) {
|
| 2335 |
|
|
if (want_console != fg_console &&
|
| 2336 |
|
|
vc_cons_allocated(want_console)) {
|
| 2337 |
|
|
hide_cursor(vc_cons[fg_console].d);
|
| 2338 |
|
|
change_console(vc_cons[want_console].d);
|
| 2339 |
|
|
/* we only changed when the console had already
|
| 2340 |
|
|
been allocated - a new console is not created
|
| 2341 |
|
|
in an interrupt routine */
|
| 2342 |
|
|
}
|
| 2343 |
|
|
want_console = -1;
|
| 2344 |
|
|
}
|
| 2345 |
|
|
if (do_poke_blanked_console) { /* do not unblank for a LED change */
|
| 2346 |
|
|
do_poke_blanked_console = 0;
|
| 2347 |
|
|
poke_blanked_console();
|
| 2348 |
|
|
}
|
| 2349 |
|
|
if (scrollback_delta) {
|
| 2350 |
|
|
struct vc_data *vc = vc_cons[fg_console].d;
|
| 2351 |
|
|
clear_selection();
|
| 2352 |
|
|
if (vc->vc_mode == KD_TEXT)
|
| 2353 |
|
|
vc->vc_sw->con_scrolldelta(vc, scrollback_delta);
|
| 2354 |
|
|
scrollback_delta = 0;
|
| 2355 |
|
|
}
|
| 2356 |
|
|
if (blank_timer_expired) {
|
| 2357 |
|
|
do_blank_screen(0);
|
| 2358 |
|
|
blank_timer_expired = 0;
|
| 2359 |
|
|
}
|
| 2360 |
|
|
notify_update(vc_cons[fg_console].d);
|
| 2361 |
|
|
|
| 2362 |
|
|
release_console_sem();
|
| 2363 |
|
|
}
|
| 2364 |
|
|
|
| 2365 |
|
|
int set_console(int nr)
|
| 2366 |
|
|
{
|
| 2367 |
|
|
struct vc_data *vc = vc_cons[fg_console].d;
|
| 2368 |
|
|
|
| 2369 |
|
|
if (!vc_cons_allocated(nr) || vt_dont_switch ||
|
| 2370 |
|
|
(vc->vt_mode.mode == VT_AUTO && vc->vc_mode == KD_GRAPHICS)) {
|
| 2371 |
|
|
|
| 2372 |
|
|
/*
|
| 2373 |
|
|
* Console switch will fail in console_callback() or
|
| 2374 |
|
|
* change_console() so there is no point scheduling
|
| 2375 |
|
|
* the callback
|
| 2376 |
|
|
*
|
| 2377 |
|
|
* Existing set_console() users don't check the return
|
| 2378 |
|
|
* value so this shouldn't break anything
|
| 2379 |
|
|
*/
|
| 2380 |
|
|
return -EINVAL;
|
| 2381 |
|
|
}
|
| 2382 |
|
|
|
| 2383 |
|
|
want_console = nr;
|
| 2384 |
|
|
schedule_console_callback();
|
| 2385 |
|
|
|
| 2386 |
|
|
return 0;
|
| 2387 |
|
|
}
|
| 2388 |
|
|
|
| 2389 |
|
|
struct tty_driver *console_driver;
|
| 2390 |
|
|
|
| 2391 |
|
|
#ifdef CONFIG_VT_CONSOLE
|
| 2392 |
|
|
|
| 2393 |
|
|
/*
|
| 2394 |
|
|
* Console on virtual terminal
|
| 2395 |
|
|
*
|
| 2396 |
|
|
* The console must be locked when we get here.
|
| 2397 |
|
|
*/
|
| 2398 |
|
|
|
| 2399 |
|
|
static void vt_console_print(struct console *co, const char *b, unsigned count)
|
| 2400 |
|
|
{
|
| 2401 |
|
|
struct vc_data *vc = vc_cons[fg_console].d;
|
| 2402 |
|
|
unsigned char c;
|
| 2403 |
|
|
static unsigned long printing;
|
| 2404 |
|
|
const ushort *start;
|
| 2405 |
|
|
ushort cnt = 0;
|
| 2406 |
|
|
ushort myx;
|
| 2407 |
|
|
|
| 2408 |
|
|
/* console busy or not yet initialized */
|
| 2409 |
|
|
if (!printable || test_and_set_bit(0, &printing))
|
| 2410 |
|
|
return;
|
| 2411 |
|
|
|
| 2412 |
|
|
if (kmsg_redirect && vc_cons_allocated(kmsg_redirect - 1))
|
| 2413 |
|
|
vc = vc_cons[kmsg_redirect - 1].d;
|
| 2414 |
|
|
|
| 2415 |
|
|
/* read `x' only after setting currcons properly (otherwise
|
| 2416 |
|
|
the `x' macro will read the x of the foreground console). */
|
| 2417 |
|
|
myx = vc->vc_x;
|
| 2418 |
|
|
|
| 2419 |
|
|
if (!vc_cons_allocated(fg_console)) {
|
| 2420 |
|
|
/* impossible */
|
| 2421 |
|
|
/* printk("vt_console_print: tty %d not allocated ??\n", currcons+1); */
|
| 2422 |
|
|
goto quit;
|
| 2423 |
|
|
}
|
| 2424 |
|
|
|
| 2425 |
|
|
if (vc->vc_mode != KD_TEXT)
|
| 2426 |
|
|
goto quit;
|
| 2427 |
|
|
|
| 2428 |
|
|
/* undraw cursor first */
|
| 2429 |
|
|
if (IS_FG(vc))
|
| 2430 |
|
|
hide_cursor(vc);
|
| 2431 |
|
|
|
| 2432 |
|
|
start = (ushort *)vc->vc_pos;
|
| 2433 |
|
|
|
| 2434 |
|
|
/* Contrived structure to try to emulate original need_wrap behaviour
|
| 2435 |
|
|
* Problems caused when we have need_wrap set on '\n' character */
|
| 2436 |
|
|
while (count--) {
|
| 2437 |
|
|
c = *b++;
|
| 2438 |
|
|
if (c == 10 || c == 13 || c == 8 || vc->vc_need_wrap) {
|
| 2439 |
|
|
if (cnt > 0) {
|
| 2440 |
|
|
if (CON_IS_VISIBLE(vc))
|
| 2441 |
|
|
vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, vc->vc_x);
|
| 2442 |
|
|
vc->vc_x += cnt;
|
| 2443 |
|
|
if (vc->vc_need_wrap)
|
| 2444 |
|
|
vc->vc_x--;
|
| 2445 |
|
|
cnt = 0;
|
| 2446 |
|
|
}
|
| 2447 |
|
|
if (c == 8) { /* backspace */
|
| 2448 |
|
|
bs(vc);
|
| 2449 |
|
|
start = (ushort *)vc->vc_pos;
|
| 2450 |
|
|
myx = vc->vc_x;
|
| 2451 |
|
|
continue;
|
| 2452 |
|
|
}
|
| 2453 |
|
|
if (c != 13)
|
| 2454 |
|
|
lf(vc);
|
| 2455 |
|
|
cr(vc);
|
| 2456 |
|
|
start = (ushort *)vc->vc_pos;
|
| 2457 |
|
|
myx = vc->vc_x;
|
| 2458 |
|
|
if (c == 10 || c == 13)
|
| 2459 |
|
|
continue;
|
| 2460 |
|
|
}
|
| 2461 |
|
|
scr_writew((vc->vc_attr << 8) + c, (unsigned short *)vc->vc_pos);
|
| 2462 |
|
|
notify_write(vc, c);
|
| 2463 |
|
|
cnt++;
|
| 2464 |
|
|
if (myx == vc->vc_cols - 1) {
|
| 2465 |
|
|
vc->vc_need_wrap = 1;
|
| 2466 |
|
|
continue;
|
| 2467 |
|
|
}
|
| 2468 |
|
|
vc->vc_pos += 2;
|
| 2469 |
|
|
myx++;
|
| 2470 |
|
|
}
|
| 2471 |
|
|
if (cnt > 0) {
|
| 2472 |
|
|
if (CON_IS_VISIBLE(vc))
|
| 2473 |
|
|
vc->vc_sw->con_putcs(vc, start, cnt, vc->vc_y, vc->vc_x);
|
| 2474 |
|
|
vc->vc_x += cnt;
|
| 2475 |
|
|
if (vc->vc_x == vc->vc_cols) {
|
| 2476 |
|
|
vc->vc_x--;
|
| 2477 |
|
|
vc->vc_need_wrap = 1;
|
| 2478 |
|
|
}
|
| 2479 |
|
|
}
|
| 2480 |
|
|
set_cursor(vc);
|
| 2481 |
|
|
notify_update(vc);
|
| 2482 |
|
|
|
| 2483 |
|
|
quit:
|
| 2484 |
|
|
clear_bit(0, &printing);
|
| 2485 |
|
|
}
|
| 2486 |
|
|
|
| 2487 |
|
|
static struct tty_driver *vt_console_device(struct console *c, int *index)
|
| 2488 |
|
|
{
|
| 2489 |
|
|
*index = c->index ? c->index-1 : fg_console;
|
| 2490 |
|
|
return console_driver;
|
| 2491 |
|
|
}
|
| 2492 |
|
|
|
| 2493 |
|
|
static struct console vt_console_driver = {
|
| 2494 |
|
|
.name = "tty",
|
| 2495 |
|
|
.write = vt_console_print,
|
| 2496 |
|
|
.device = vt_console_device,
|
| 2497 |
|
|
.unblank = unblank_screen,
|
| 2498 |
|
|
.flags = CON_PRINTBUFFER,
|
| 2499 |
|
|
.index = -1,
|
| 2500 |
|
|
};
|
| 2501 |
|
|
#endif
|
| 2502 |
|
|
|
| 2503 |
|
|
/*
|
| 2504 |
|
|
* Handling of Linux-specific VC ioctls
|
| 2505 |
|
|
*/
|
| 2506 |
|
|
|
| 2507 |
|
|
/*
|
| 2508 |
|
|
* Generally a bit racy with respect to console_sem().
|
| 2509 |
|
|
*
|
| 2510 |
|
|
* There are some functions which don't need it.
|
| 2511 |
|
|
*
|
| 2512 |
|
|
* There are some functions which can sleep for arbitrary periods
|
| 2513 |
|
|
* (paste_selection) but we don't need the lock there anyway.
|
| 2514 |
|
|
*
|
| 2515 |
|
|
* set_selection has locking, and definitely needs it
|
| 2516 |
|
|
*/
|
| 2517 |
|
|
|
| 2518 |
|
|
int tioclinux(struct tty_struct *tty, unsigned long arg)
|
| 2519 |
|
|
{
|
| 2520 |
|
|
char type, data;
|
| 2521 |
|
|
char __user *p = (char __user *)arg;
|
| 2522 |
|
|
int lines;
|
| 2523 |
|
|
int ret;
|
| 2524 |
|
|
|
| 2525 |
|
|
if (tty->driver->type != TTY_DRIVER_TYPE_CONSOLE)
|
| 2526 |
|
|
return -EINVAL;
|
| 2527 |
|
|
if (current->signal->tty != tty && !capable(CAP_SYS_ADMIN))
|
| 2528 |
|
|
return -EPERM;
|
| 2529 |
|
|
if (get_user(type, p))
|
| 2530 |
|
|
return -EFAULT;
|
| 2531 |
|
|
ret = 0;
|
| 2532 |
|
|
switch (type)
|
| 2533 |
|
|
{
|
| 2534 |
|
|
case TIOCL_SETSEL:
|
| 2535 |
|
|
acquire_console_sem();
|
| 2536 |
|
|
ret = set_selection((struct tiocl_selection __user *)(p+1), tty);
|
| 2537 |
|
|
release_console_sem();
|
| 2538 |
|
|
break;
|
| 2539 |
|
|
case TIOCL_PASTESEL:
|
| 2540 |
|
|
ret = paste_selection(tty);
|
| 2541 |
|
|
break;
|
| 2542 |
|
|
case TIOCL_UNBLANKSCREEN:
|
| 2543 |
|
|
acquire_console_sem();
|
| 2544 |
|
|
unblank_screen();
|
| 2545 |
|
|
release_console_sem();
|
| 2546 |
|
|
break;
|
| 2547 |
|
|
case TIOCL_SELLOADLUT:
|
| 2548 |
|
|
ret = sel_loadlut(p);
|
| 2549 |
|
|
break;
|
| 2550 |
|
|
case TIOCL_GETSHIFTSTATE:
|
| 2551 |
|
|
|
| 2552 |
|
|
/*
|
| 2553 |
|
|
* Make it possible to react to Shift+Mousebutton.
|
| 2554 |
|
|
* Note that 'shift_state' is an undocumented
|
| 2555 |
|
|
* kernel-internal variable; programs not closely
|
| 2556 |
|
|
* related to the kernel should not use this.
|
| 2557 |
|
|
*/
|
| 2558 |
|
|
data = shift_state;
|
| 2559 |
|
|
ret = __put_user(data, p);
|
| 2560 |
|
|
break;
|
| 2561 |
|
|
case TIOCL_GETMOUSEREPORTING:
|
| 2562 |
|
|
data = mouse_reporting();
|
| 2563 |
|
|
ret = __put_user(data, p);
|
| 2564 |
|
|
break;
|
| 2565 |
|
|
case TIOCL_SETVESABLANK:
|
| 2566 |
|
|
ret = set_vesa_blanking(p);
|
| 2567 |
|
|
break;
|
| 2568 |
|
|
case TIOCL_GETKMSGREDIRECT:
|
| 2569 |
|
|
data = kmsg_redirect;
|
| 2570 |
|
|
ret = __put_user(data, p);
|
| 2571 |
|
|
break;
|
| 2572 |
|
|
case TIOCL_SETKMSGREDIRECT:
|
| 2573 |
|
|
if (!capable(CAP_SYS_ADMIN)) {
|
| 2574 |
|
|
ret = -EPERM;
|
| 2575 |
|
|
} else {
|
| 2576 |
|
|
if (get_user(data, p+1))
|
| 2577 |
|
|
ret = -EFAULT;
|
| 2578 |
|
|
else
|
| 2579 |
|
|
kmsg_redirect = data;
|
| 2580 |
|
|
}
|
| 2581 |
|
|
break;
|
| 2582 |
|
|
case TIOCL_GETFGCONSOLE:
|
| 2583 |
|
|
ret = fg_console;
|
| 2584 |
|
|
break;
|
| 2585 |
|
|
case TIOCL_SCROLLCONSOLE:
|
| 2586 |
|
|
if (get_user(lines, (s32 __user *)(p+4))) {
|
| 2587 |
|
|
ret = -EFAULT;
|
| 2588 |
|
|
} else {
|
| 2589 |
|
|
scrollfront(vc_cons[fg_console].d, lines);
|
| 2590 |
|
|
ret = 0;
|
| 2591 |
|
|
}
|
| 2592 |
|
|
break;
|
| 2593 |
|
|
case TIOCL_BLANKSCREEN: /* until explicitly unblanked, not only poked */
|
| 2594 |
|
|
acquire_console_sem();
|
| 2595 |
|
|
ignore_poke = 1;
|
| 2596 |
|
|
do_blank_screen(0);
|
| 2597 |
|
|
release_console_sem();
|
| 2598 |
|
|
break;
|
| 2599 |
|
|
case TIOCL_BLANKEDSCREEN:
|
| 2600 |
|
|
ret = console_blanked;
|
| 2601 |
|
|
break;
|
| 2602 |
|
|
default:
|
| 2603 |
|
|
ret = -EINVAL;
|
| 2604 |
|
|
break;
|
| 2605 |
|
|
}
|
| 2606 |
|
|
return ret;
|
| 2607 |
|
|
}
|
| 2608 |
|
|
|
| 2609 |
|
|
/*
|
| 2610 |
|
|
* /dev/ttyN handling
|
| 2611 |
|
|
*/
|
| 2612 |
|
|
|
| 2613 |
|
|
static int con_write(struct tty_struct *tty, const unsigned char *buf, int count)
|
| 2614 |
|
|
{
|
| 2615 |
|
|
int retval;
|
| 2616 |
|
|
|
| 2617 |
|
|
retval = do_con_write(tty, buf, count);
|
| 2618 |
|
|
con_flush_chars(tty);
|
| 2619 |
|
|
|
| 2620 |
|
|
return retval;
|
| 2621 |
|
|
}
|
| 2622 |
|
|
|
| 2623 |
|
|
static void con_put_char(struct tty_struct *tty, unsigned char ch)
|
| 2624 |
|
|
{
|
| 2625 |
|
|
if (in_interrupt())
|
| 2626 |
|
|
return; /* n_r3964 calls put_char() from interrupt context */
|
| 2627 |
|
|
do_con_write(tty, &ch, 1);
|
| 2628 |
|
|
}
|
| 2629 |
|
|
|
| 2630 |
|
|
static int con_write_room(struct tty_struct *tty)
|
| 2631 |
|
|
{
|
| 2632 |
|
|
if (tty->stopped)
|
| 2633 |
|
|
return 0;
|
| 2634 |
|
|
return 4096; /* No limit, really; we're not buffering */
|
| 2635 |
|
|
}
|
| 2636 |
|
|
|
| 2637 |
|
|
static int con_chars_in_buffer(struct tty_struct *tty)
|
| 2638 |
|
|
{
|
| 2639 |
|
|
return 0; /* we're not buffering */
|
| 2640 |
|
|
}
|
| 2641 |
|
|
|
| 2642 |
|
|
/*
|
| 2643 |
|
|
* con_throttle and con_unthrottle are only used for
|
| 2644 |
|
|
* paste_selection(), which has to stuff in a large number of
|
| 2645 |
|
|
* characters...
|
| 2646 |
|
|
*/
|
| 2647 |
|
|
static void con_throttle(struct tty_struct *tty)
|
| 2648 |
|
|
{
|
| 2649 |
|
|
}
|
| 2650 |
|
|
|
| 2651 |
|
|
static void con_unthrottle(struct tty_struct *tty)
|
| 2652 |
|
|
{
|
| 2653 |
|
|
struct vc_data *vc = tty->driver_data;
|
| 2654 |
|
|
|
| 2655 |
|
|
wake_up_interruptible(&vc->paste_wait);
|
| 2656 |
|
|
}
|
| 2657 |
|
|
|
| 2658 |
|
|
/*
|
| 2659 |
|
|
* Turn the Scroll-Lock LED on when the tty is stopped
|
| 2660 |
|
|
*/
|
| 2661 |
|
|
static void con_stop(struct tty_struct *tty)
|
| 2662 |
|
|
{
|
| 2663 |
|
|
int console_num;
|
| 2664 |
|
|
if (!tty)
|
| 2665 |
|
|
return;
|
| 2666 |
|
|
console_num = tty->index;
|
| 2667 |
|
|
if (!vc_cons_allocated(console_num))
|
| 2668 |
|
|
return;
|
| 2669 |
|
|
set_vc_kbd_led(kbd_table + console_num, VC_SCROLLOCK);
|
| 2670 |
|
|
set_leds();
|
| 2671 |
|
|
}
|
| 2672 |
|
|
|
| 2673 |
|
|
/*
|
| 2674 |
|
|
* Turn the Scroll-Lock LED off when the console is started
|
| 2675 |
|
|
*/
|
| 2676 |
|
|
static void con_start(struct tty_struct *tty)
|
| 2677 |
|
|
{
|
| 2678 |
|
|
int console_num;
|
| 2679 |
|
|
if (!tty)
|
| 2680 |
|
|
return;
|
| 2681 |
|
|
console_num = tty->index;
|
| 2682 |
|
|
if (!vc_cons_allocated(console_num))
|
| 2683 |
|
|
return;
|
| 2684 |
|
|
clr_vc_kbd_led(kbd_table + console_num, VC_SCROLLOCK);
|
| 2685 |
|
|
set_leds();
|
| 2686 |
|
|
}
|
| 2687 |
|
|
|
| 2688 |
|
|
static void con_flush_chars(struct tty_struct *tty)
|
| 2689 |
|
|
{
|
| 2690 |
|
|
struct vc_data *vc;
|
| 2691 |
|
|
|
| 2692 |
|
|
if (in_interrupt()) /* from flush_to_ldisc */
|
| 2693 |
|
|
return;
|
| 2694 |
|
|
|
| 2695 |
|
|
/* if we race with con_close(), vt may be null */
|
| 2696 |
|
|
acquire_console_sem();
|
| 2697 |
|
|
vc = tty->driver_data;
|
| 2698 |
|
|
if (vc)
|
| 2699 |
|
|
set_cursor(vc);
|
| 2700 |
|
|
release_console_sem();
|
| 2701 |
|
|
}
|
| 2702 |
|
|
|
| 2703 |
|
|
/*
|
| 2704 |
|
|
* Allocate the console screen memory.
|
| 2705 |
|
|
*/
|
| 2706 |
|
|
static int con_open(struct tty_struct *tty, struct file *filp)
|
| 2707 |
|
|
{
|
| 2708 |
|
|
unsigned int currcons = tty->index;
|
| 2709 |
|
|
int ret = 0;
|
| 2710 |
|
|
|
| 2711 |
|
|
acquire_console_sem();
|
| 2712 |
|
|
if (tty->driver_data == NULL) {
|
| 2713 |
|
|
ret = vc_allocate(currcons);
|
| 2714 |
|
|
if (ret == 0) {
|
| 2715 |
|
|
struct vc_data *vc = vc_cons[currcons].d;
|
| 2716 |
|
|
tty->driver_data = vc;
|
| 2717 |
|
|
vc->vc_tty = tty;
|
| 2718 |
|
|
|
| 2719 |
|
|
if (!tty->winsize.ws_row && !tty->winsize.ws_col) {
|
| 2720 |
|
|
tty->winsize.ws_row = vc_cons[currcons].d->vc_rows;
|
| 2721 |
|
|
tty->winsize.ws_col = vc_cons[currcons].d->vc_cols;
|
| 2722 |
|
|
}
|
| 2723 |
|
|
release_console_sem();
|
| 2724 |
|
|
vcs_make_sysfs(tty);
|
| 2725 |
|
|
return ret;
|
| 2726 |
|
|
}
|
| 2727 |
|
|
}
|
| 2728 |
|
|
release_console_sem();
|
| 2729 |
|
|
return ret;
|
| 2730 |
|
|
}
|
| 2731 |
|
|
|
| 2732 |
|
|
/*
|
| 2733 |
|
|
* We take tty_mutex in here to prevent another thread from coming in via init_dev
|
| 2734 |
|
|
* and taking a ref against the tty while we're in the process of forgetting
|
| 2735 |
|
|
* about it and cleaning things up.
|
| 2736 |
|
|
*
|
| 2737 |
|
|
* This is because vcs_remove_sysfs() can sleep and will drop the BKL.
|
| 2738 |
|
|
*/
|
| 2739 |
|
|
static void con_close(struct tty_struct *tty, struct file *filp)
|
| 2740 |
|
|
{
|
| 2741 |
|
|
mutex_lock(&tty_mutex);
|
| 2742 |
|
|
acquire_console_sem();
|
| 2743 |
|
|
if (tty && tty->count == 1) {
|
| 2744 |
|
|
struct vc_data *vc = tty->driver_data;
|
| 2745 |
|
|
|
| 2746 |
|
|
if (vc)
|
| 2747 |
|
|
vc->vc_tty = NULL;
|
| 2748 |
|
|
tty->driver_data = NULL;
|
| 2749 |
|
|
release_console_sem();
|
| 2750 |
|
|
vcs_remove_sysfs(tty);
|
| 2751 |
|
|
mutex_unlock(&tty_mutex);
|
| 2752 |
|
|
/*
|
| 2753 |
|
|
* tty_mutex is released, but we still hold BKL, so there is
|
| 2754 |
|
|
* still exclusion against init_dev()
|
| 2755 |
|
|
*/
|
| 2756 |
|
|
return;
|
| 2757 |
|
|
}
|
| 2758 |
|
|
release_console_sem();
|
| 2759 |
|
|
mutex_unlock(&tty_mutex);
|
| 2760 |
|
|
}
|
| 2761 |
|
|
|
| 2762 |
|
|
static int default_italic_color = 2; // green (ASCII)
|
| 2763 |
|
|
static int default_underline_color = 3; // cyan (ASCII)
|
| 2764 |
|
|
module_param_named(italic, default_italic_color, int, S_IRUGO | S_IWUSR);
|
| 2765 |
|
|
module_param_named(underline, default_underline_color, int, S_IRUGO | S_IWUSR);
|
| 2766 |
|
|
|
| 2767 |
|
|
static void vc_init(struct vc_data *vc, unsigned int rows,
|
| 2768 |
|
|
unsigned int cols, int do_clear)
|
| 2769 |
|
|
{
|
| 2770 |
|
|
int j, k ;
|
| 2771 |
|
|
|
| 2772 |
|
|
vc->vc_cols = cols;
|
| 2773 |
|
|
vc->vc_rows = rows;
|
| 2774 |
|
|
vc->vc_size_row = cols << 1;
|
| 2775 |
|
|
vc->vc_screenbuf_size = vc->vc_rows * vc->vc_size_row;
|
| 2776 |
|
|
|
| 2777 |
|
|
set_origin(vc);
|
| 2778 |
|
|
vc->vc_pos = vc->vc_origin;
|
| 2779 |
|
|
reset_vc(vc);
|
| 2780 |
|
|
for (j=k=0; j<16; j++) {
|
| 2781 |
|
|
vc->vc_palette[k++] = default_red[j] ;
|
| 2782 |
|
|
vc->vc_palette[k++] = default_grn[j] ;
|
| 2783 |
|
|
vc->vc_palette[k++] = default_blu[j] ;
|
| 2784 |
|
|
}
|
| 2785 |
|
|
vc->vc_def_color = 0x07; /* white */
|
| 2786 |
|
|
vc->vc_ulcolor = default_underline_color;
|
| 2787 |
|
|
vc->vc_itcolor = default_italic_color;
|
| 2788 |
|
|
vc->vc_halfcolor = 0x08; /* grey */
|
| 2789 |
|
|
init_waitqueue_head(&vc->paste_wait);
|
| 2790 |
|
|
reset_terminal(vc, do_clear);
|
| 2791 |
|
|
}
|
| 2792 |
|
|
|
| 2793 |
|
|
/*
|
| 2794 |
|
|
* This routine initializes console interrupts, and does nothing
|
| 2795 |
|
|
* else. If you want the screen to clear, call tty_write with
|
| 2796 |
|
|
* the appropriate escape-sequence.
|
| 2797 |
|
|
*/
|
| 2798 |
|
|
|
| 2799 |
|
|
static int __init con_init(void)
|
| 2800 |
|
|
{
|
| 2801 |
|
|
const char *display_desc = NULL;
|
| 2802 |
|
|
struct vc_data *vc;
|
| 2803 |
|
|
unsigned int currcons = 0, i;
|
| 2804 |
|
|
|
| 2805 |
|
|
acquire_console_sem();
|
| 2806 |
|
|
|
| 2807 |
|
|
if (conswitchp)
|
| 2808 |
|
|
display_desc = conswitchp->con_startup();
|
| 2809 |
|
|
if (!display_desc) {
|
| 2810 |
|
|
fg_console = 0;
|
| 2811 |
|
|
release_console_sem();
|
| 2812 |
|
|
return 0;
|
| 2813 |
|
|
}
|
| 2814 |
|
|
|
| 2815 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 2816 |
|
|
struct con_driver *con_driver = ®istered_con_driver[i];
|
| 2817 |
|
|
|
| 2818 |
|
|
if (con_driver->con == NULL) {
|
| 2819 |
|
|
con_driver->con = conswitchp;
|
| 2820 |
|
|
con_driver->desc = display_desc;
|
| 2821 |
|
|
con_driver->flag = CON_DRIVER_FLAG_INIT;
|
| 2822 |
|
|
con_driver->first = 0;
|
| 2823 |
|
|
con_driver->last = MAX_NR_CONSOLES - 1;
|
| 2824 |
|
|
break;
|
| 2825 |
|
|
}
|
| 2826 |
|
|
}
|
| 2827 |
|
|
|
| 2828 |
|
|
for (i = 0; i < MAX_NR_CONSOLES; i++)
|
| 2829 |
|
|
con_driver_map[i] = conswitchp;
|
| 2830 |
|
|
|
| 2831 |
|
|
if (blankinterval) {
|
| 2832 |
|
|
blank_state = blank_normal_wait;
|
| 2833 |
|
|
mod_timer(&console_timer, jiffies + blankinterval);
|
| 2834 |
|
|
}
|
| 2835 |
|
|
|
| 2836 |
|
|
/*
|
| 2837 |
|
|
* kmalloc is not running yet - we use the bootmem allocator.
|
| 2838 |
|
|
*/
|
| 2839 |
|
|
for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) {
|
| 2840 |
|
|
vc_cons[currcons].d = vc = alloc_bootmem(sizeof(struct vc_data));
|
| 2841 |
|
|
INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
|
| 2842 |
|
|
visual_init(vc, currcons, 1);
|
| 2843 |
|
|
vc->vc_screenbuf = (unsigned short *)alloc_bootmem(vc->vc_screenbuf_size);
|
| 2844 |
|
|
vc->vc_kmalloced = 0;
|
| 2845 |
|
|
vc_init(vc, vc->vc_rows, vc->vc_cols,
|
| 2846 |
|
|
currcons || !vc->vc_sw->con_save_screen);
|
| 2847 |
|
|
}
|
| 2848 |
|
|
currcons = fg_console = 0;
|
| 2849 |
|
|
master_display_fg = vc = vc_cons[currcons].d;
|
| 2850 |
|
|
set_origin(vc);
|
| 2851 |
|
|
save_screen(vc);
|
| 2852 |
|
|
gotoxy(vc, vc->vc_x, vc->vc_y);
|
| 2853 |
|
|
csi_J(vc, 0);
|
| 2854 |
|
|
update_screen(vc);
|
| 2855 |
|
|
printk("Console: %s %s %dx%d",
|
| 2856 |
|
|
vc->vc_can_do_color ? "colour" : "mono",
|
| 2857 |
|
|
display_desc, vc->vc_cols, vc->vc_rows);
|
| 2858 |
|
|
printable = 1;
|
| 2859 |
|
|
printk("\n");
|
| 2860 |
|
|
|
| 2861 |
|
|
release_console_sem();
|
| 2862 |
|
|
|
| 2863 |
|
|
#ifdef CONFIG_VT_CONSOLE
|
| 2864 |
|
|
register_console(&vt_console_driver);
|
| 2865 |
|
|
#endif
|
| 2866 |
|
|
return 0;
|
| 2867 |
|
|
}
|
| 2868 |
|
|
console_initcall(con_init);
|
| 2869 |
|
|
|
| 2870 |
|
|
static const struct tty_operations con_ops = {
|
| 2871 |
|
|
.open = con_open,
|
| 2872 |
|
|
.close = con_close,
|
| 2873 |
|
|
.write = con_write,
|
| 2874 |
|
|
.write_room = con_write_room,
|
| 2875 |
|
|
.put_char = con_put_char,
|
| 2876 |
|
|
.flush_chars = con_flush_chars,
|
| 2877 |
|
|
.chars_in_buffer = con_chars_in_buffer,
|
| 2878 |
|
|
.ioctl = vt_ioctl,
|
| 2879 |
|
|
.stop = con_stop,
|
| 2880 |
|
|
.start = con_start,
|
| 2881 |
|
|
.throttle = con_throttle,
|
| 2882 |
|
|
.unthrottle = con_unthrottle,
|
| 2883 |
|
|
};
|
| 2884 |
|
|
|
| 2885 |
|
|
int __init vty_init(void)
|
| 2886 |
|
|
{
|
| 2887 |
|
|
vcs_init();
|
| 2888 |
|
|
|
| 2889 |
|
|
console_driver = alloc_tty_driver(MAX_NR_CONSOLES);
|
| 2890 |
|
|
if (!console_driver)
|
| 2891 |
|
|
panic("Couldn't allocate console driver\n");
|
| 2892 |
|
|
console_driver->owner = THIS_MODULE;
|
| 2893 |
|
|
console_driver->name = "tty";
|
| 2894 |
|
|
console_driver->name_base = 1;
|
| 2895 |
|
|
console_driver->major = TTY_MAJOR;
|
| 2896 |
|
|
console_driver->minor_start = 1;
|
| 2897 |
|
|
console_driver->type = TTY_DRIVER_TYPE_CONSOLE;
|
| 2898 |
|
|
console_driver->init_termios = tty_std_termios;
|
| 2899 |
|
|
console_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS;
|
| 2900 |
|
|
tty_set_operations(console_driver, &con_ops);
|
| 2901 |
|
|
if (tty_register_driver(console_driver))
|
| 2902 |
|
|
panic("Couldn't register console driver\n");
|
| 2903 |
|
|
|
| 2904 |
|
|
kbd_init();
|
| 2905 |
|
|
console_map_init();
|
| 2906 |
|
|
#ifdef CONFIG_PROM_CONSOLE
|
| 2907 |
|
|
prom_con_init();
|
| 2908 |
|
|
#endif
|
| 2909 |
|
|
#ifdef CONFIG_MDA_CONSOLE
|
| 2910 |
|
|
mda_console_init();
|
| 2911 |
|
|
#endif
|
| 2912 |
|
|
return 0;
|
| 2913 |
|
|
}
|
| 2914 |
|
|
|
| 2915 |
|
|
#ifndef VT_SINGLE_DRIVER
|
| 2916 |
|
|
#include <linux/device.h>
|
| 2917 |
|
|
|
| 2918 |
|
|
static struct class *vtconsole_class;
|
| 2919 |
|
|
|
| 2920 |
|
|
static int bind_con_driver(const struct consw *csw, int first, int last,
|
| 2921 |
|
|
int deflt)
|
| 2922 |
|
|
{
|
| 2923 |
|
|
struct module *owner = csw->owner;
|
| 2924 |
|
|
const char *desc = NULL;
|
| 2925 |
|
|
struct con_driver *con_driver;
|
| 2926 |
|
|
int i, j = -1, k = -1, retval = -ENODEV;
|
| 2927 |
|
|
|
| 2928 |
|
|
if (!try_module_get(owner))
|
| 2929 |
|
|
return -ENODEV;
|
| 2930 |
|
|
|
| 2931 |
|
|
acquire_console_sem();
|
| 2932 |
|
|
|
| 2933 |
|
|
/* check if driver is registered */
|
| 2934 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 2935 |
|
|
con_driver = ®istered_con_driver[i];
|
| 2936 |
|
|
|
| 2937 |
|
|
if (con_driver->con == csw) {
|
| 2938 |
|
|
desc = con_driver->desc;
|
| 2939 |
|
|
retval = 0;
|
| 2940 |
|
|
break;
|
| 2941 |
|
|
}
|
| 2942 |
|
|
}
|
| 2943 |
|
|
|
| 2944 |
|
|
if (retval)
|
| 2945 |
|
|
goto err;
|
| 2946 |
|
|
|
| 2947 |
|
|
if (!(con_driver->flag & CON_DRIVER_FLAG_INIT)) {
|
| 2948 |
|
|
csw->con_startup();
|
| 2949 |
|
|
con_driver->flag |= CON_DRIVER_FLAG_INIT;
|
| 2950 |
|
|
}
|
| 2951 |
|
|
|
| 2952 |
|
|
if (deflt) {
|
| 2953 |
|
|
if (conswitchp)
|
| 2954 |
|
|
module_put(conswitchp->owner);
|
| 2955 |
|
|
|
| 2956 |
|
|
__module_get(owner);
|
| 2957 |
|
|
conswitchp = csw;
|
| 2958 |
|
|
}
|
| 2959 |
|
|
|
| 2960 |
|
|
first = max(first, con_driver->first);
|
| 2961 |
|
|
last = min(last, con_driver->last);
|
| 2962 |
|
|
|
| 2963 |
|
|
for (i = first; i <= last; i++) {
|
| 2964 |
|
|
int old_was_color;
|
| 2965 |
|
|
struct vc_data *vc = vc_cons[i].d;
|
| 2966 |
|
|
|
| 2967 |
|
|
if (con_driver_map[i])
|
| 2968 |
|
|
module_put(con_driver_map[i]->owner);
|
| 2969 |
|
|
__module_get(owner);
|
| 2970 |
|
|
con_driver_map[i] = csw;
|
| 2971 |
|
|
|
| 2972 |
|
|
if (!vc || !vc->vc_sw)
|
| 2973 |
|
|
continue;
|
| 2974 |
|
|
|
| 2975 |
|
|
j = i;
|
| 2976 |
|
|
|
| 2977 |
|
|
if (CON_IS_VISIBLE(vc)) {
|
| 2978 |
|
|
k = i;
|
| 2979 |
|
|
save_screen(vc);
|
| 2980 |
|
|
}
|
| 2981 |
|
|
|
| 2982 |
|
|
old_was_color = vc->vc_can_do_color;
|
| 2983 |
|
|
vc->vc_sw->con_deinit(vc);
|
| 2984 |
|
|
vc->vc_origin = (unsigned long)vc->vc_screenbuf;
|
| 2985 |
|
|
visual_init(vc, i, 0);
|
| 2986 |
|
|
set_origin(vc);
|
| 2987 |
|
|
update_attr(vc);
|
| 2988 |
|
|
|
| 2989 |
|
|
/* If the console changed between mono <-> color, then
|
| 2990 |
|
|
* the attributes in the screenbuf will be wrong. The
|
| 2991 |
|
|
* following resets all attributes to something sane.
|
| 2992 |
|
|
*/
|
| 2993 |
|
|
if (old_was_color != vc->vc_can_do_color)
|
| 2994 |
|
|
clear_buffer_attributes(vc);
|
| 2995 |
|
|
}
|
| 2996 |
|
|
|
| 2997 |
|
|
printk("Console: switching ");
|
| 2998 |
|
|
if (!deflt)
|
| 2999 |
|
|
printk("consoles %d-%d ", first+1, last+1);
|
| 3000 |
|
|
if (j >= 0) {
|
| 3001 |
|
|
struct vc_data *vc = vc_cons[j].d;
|
| 3002 |
|
|
|
| 3003 |
|
|
printk("to %s %s %dx%d\n",
|
| 3004 |
|
|
vc->vc_can_do_color ? "colour" : "mono",
|
| 3005 |
|
|
desc, vc->vc_cols, vc->vc_rows);
|
| 3006 |
|
|
|
| 3007 |
|
|
if (k >= 0) {
|
| 3008 |
|
|
vc = vc_cons[k].d;
|
| 3009 |
|
|
update_screen(vc);
|
| 3010 |
|
|
}
|
| 3011 |
|
|
} else
|
| 3012 |
|
|
printk("to %s\n", desc);
|
| 3013 |
|
|
|
| 3014 |
|
|
retval = 0;
|
| 3015 |
|
|
err:
|
| 3016 |
|
|
release_console_sem();
|
| 3017 |
|
|
module_put(owner);
|
| 3018 |
|
|
return retval;
|
| 3019 |
|
|
};
|
| 3020 |
|
|
|
| 3021 |
|
|
#ifdef CONFIG_VT_HW_CONSOLE_BINDING
|
| 3022 |
|
|
static int con_is_graphics(const struct consw *csw, int first, int last)
|
| 3023 |
|
|
{
|
| 3024 |
|
|
int i, retval = 0;
|
| 3025 |
|
|
|
| 3026 |
|
|
for (i = first; i <= last; i++) {
|
| 3027 |
|
|
struct vc_data *vc = vc_cons[i].d;
|
| 3028 |
|
|
|
| 3029 |
|
|
if (vc && vc->vc_mode == KD_GRAPHICS) {
|
| 3030 |
|
|
retval = 1;
|
| 3031 |
|
|
break;
|
| 3032 |
|
|
}
|
| 3033 |
|
|
}
|
| 3034 |
|
|
|
| 3035 |
|
|
return retval;
|
| 3036 |
|
|
}
|
| 3037 |
|
|
|
| 3038 |
|
|
/**
|
| 3039 |
|
|
* unbind_con_driver - unbind a console driver
|
| 3040 |
|
|
* @csw: pointer to console driver to unregister
|
| 3041 |
|
|
* @first: first in range of consoles that @csw should be unbound from
|
| 3042 |
|
|
* @last: last in range of consoles that @csw should be unbound from
|
| 3043 |
|
|
* @deflt: should next bound console driver be default after @csw is unbound?
|
| 3044 |
|
|
*
|
| 3045 |
|
|
* To unbind a driver from all possible consoles, pass 0 as @first and
|
| 3046 |
|
|
* %MAX_NR_CONSOLES as @last.
|
| 3047 |
|
|
*
|
| 3048 |
|
|
* @deflt controls whether the console that ends up replacing @csw should be
|
| 3049 |
|
|
* the default console.
|
| 3050 |
|
|
*
|
| 3051 |
|
|
* RETURNS:
|
| 3052 |
|
|
* -ENODEV if @csw isn't a registered console driver or can't be unregistered
|
| 3053 |
|
|
* or 0 on success.
|
| 3054 |
|
|
*/
|
| 3055 |
|
|
int unbind_con_driver(const struct consw *csw, int first, int last, int deflt)
|
| 3056 |
|
|
{
|
| 3057 |
|
|
struct module *owner = csw->owner;
|
| 3058 |
|
|
const struct consw *defcsw = NULL;
|
| 3059 |
|
|
struct con_driver *con_driver = NULL, *con_back = NULL;
|
| 3060 |
|
|
int i, retval = -ENODEV;
|
| 3061 |
|
|
|
| 3062 |
|
|
if (!try_module_get(owner))
|
| 3063 |
|
|
return -ENODEV;
|
| 3064 |
|
|
|
| 3065 |
|
|
acquire_console_sem();
|
| 3066 |
|
|
|
| 3067 |
|
|
/* check if driver is registered and if it is unbindable */
|
| 3068 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 3069 |
|
|
con_driver = ®istered_con_driver[i];
|
| 3070 |
|
|
|
| 3071 |
|
|
if (con_driver->con == csw &&
|
| 3072 |
|
|
con_driver->flag & CON_DRIVER_FLAG_MODULE) {
|
| 3073 |
|
|
retval = 0;
|
| 3074 |
|
|
break;
|
| 3075 |
|
|
}
|
| 3076 |
|
|
}
|
| 3077 |
|
|
|
| 3078 |
|
|
if (retval) {
|
| 3079 |
|
|
release_console_sem();
|
| 3080 |
|
|
goto err;
|
| 3081 |
|
|
}
|
| 3082 |
|
|
|
| 3083 |
|
|
retval = -ENODEV;
|
| 3084 |
|
|
|
| 3085 |
|
|
/* check if backup driver exists */
|
| 3086 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 3087 |
|
|
con_back = ®istered_con_driver[i];
|
| 3088 |
|
|
|
| 3089 |
|
|
if (con_back->con &&
|
| 3090 |
|
|
!(con_back->flag & CON_DRIVER_FLAG_MODULE)) {
|
| 3091 |
|
|
defcsw = con_back->con;
|
| 3092 |
|
|
retval = 0;
|
| 3093 |
|
|
break;
|
| 3094 |
|
|
}
|
| 3095 |
|
|
}
|
| 3096 |
|
|
|
| 3097 |
|
|
if (retval) {
|
| 3098 |
|
|
release_console_sem();
|
| 3099 |
|
|
goto err;
|
| 3100 |
|
|
}
|
| 3101 |
|
|
|
| 3102 |
|
|
if (!con_is_bound(csw)) {
|
| 3103 |
|
|
release_console_sem();
|
| 3104 |
|
|
goto err;
|
| 3105 |
|
|
}
|
| 3106 |
|
|
|
| 3107 |
|
|
first = max(first, con_driver->first);
|
| 3108 |
|
|
last = min(last, con_driver->last);
|
| 3109 |
|
|
|
| 3110 |
|
|
for (i = first; i <= last; i++) {
|
| 3111 |
|
|
if (con_driver_map[i] == csw) {
|
| 3112 |
|
|
module_put(csw->owner);
|
| 3113 |
|
|
con_driver_map[i] = NULL;
|
| 3114 |
|
|
}
|
| 3115 |
|
|
}
|
| 3116 |
|
|
|
| 3117 |
|
|
if (!con_is_bound(defcsw)) {
|
| 3118 |
|
|
const struct consw *defconsw = conswitchp;
|
| 3119 |
|
|
|
| 3120 |
|
|
defcsw->con_startup();
|
| 3121 |
|
|
con_back->flag |= CON_DRIVER_FLAG_INIT;
|
| 3122 |
|
|
/*
|
| 3123 |
|
|
* vgacon may change the default driver to point
|
| 3124 |
|
|
* to dummycon, we restore it here...
|
| 3125 |
|
|
*/
|
| 3126 |
|
|
conswitchp = defconsw;
|
| 3127 |
|
|
}
|
| 3128 |
|
|
|
| 3129 |
|
|
if (!con_is_bound(csw))
|
| 3130 |
|
|
con_driver->flag &= ~CON_DRIVER_FLAG_INIT;
|
| 3131 |
|
|
|
| 3132 |
|
|
release_console_sem();
|
| 3133 |
|
|
/* ignore return value, binding should not fail */
|
| 3134 |
|
|
bind_con_driver(defcsw, first, last, deflt);
|
| 3135 |
|
|
err:
|
| 3136 |
|
|
module_put(owner);
|
| 3137 |
|
|
return retval;
|
| 3138 |
|
|
|
| 3139 |
|
|
}
|
| 3140 |
|
|
EXPORT_SYMBOL(unbind_con_driver);
|
| 3141 |
|
|
|
| 3142 |
|
|
static int vt_bind(struct con_driver *con)
|
| 3143 |
|
|
{
|
| 3144 |
|
|
const struct consw *defcsw = NULL, *csw = NULL;
|
| 3145 |
|
|
int i, more = 1, first = -1, last = -1, deflt = 0;
|
| 3146 |
|
|
|
| 3147 |
|
|
if (!con->con || !(con->flag & CON_DRIVER_FLAG_MODULE) ||
|
| 3148 |
|
|
con_is_graphics(con->con, con->first, con->last))
|
| 3149 |
|
|
goto err;
|
| 3150 |
|
|
|
| 3151 |
|
|
csw = con->con;
|
| 3152 |
|
|
|
| 3153 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 3154 |
|
|
struct con_driver *con = ®istered_con_driver[i];
|
| 3155 |
|
|
|
| 3156 |
|
|
if (con->con && !(con->flag & CON_DRIVER_FLAG_MODULE)) {
|
| 3157 |
|
|
defcsw = con->con;
|
| 3158 |
|
|
break;
|
| 3159 |
|
|
}
|
| 3160 |
|
|
}
|
| 3161 |
|
|
|
| 3162 |
|
|
if (!defcsw)
|
| 3163 |
|
|
goto err;
|
| 3164 |
|
|
|
| 3165 |
|
|
while (more) {
|
| 3166 |
|
|
more = 0;
|
| 3167 |
|
|
|
| 3168 |
|
|
for (i = con->first; i <= con->last; i++) {
|
| 3169 |
|
|
if (con_driver_map[i] == defcsw) {
|
| 3170 |
|
|
if (first == -1)
|
| 3171 |
|
|
first = i;
|
| 3172 |
|
|
last = i;
|
| 3173 |
|
|
more = 1;
|
| 3174 |
|
|
} else if (first != -1)
|
| 3175 |
|
|
break;
|
| 3176 |
|
|
}
|
| 3177 |
|
|
|
| 3178 |
|
|
if (first == 0 && last == MAX_NR_CONSOLES -1)
|
| 3179 |
|
|
deflt = 1;
|
| 3180 |
|
|
|
| 3181 |
|
|
if (first != -1)
|
| 3182 |
|
|
bind_con_driver(csw, first, last, deflt);
|
| 3183 |
|
|
|
| 3184 |
|
|
first = -1;
|
| 3185 |
|
|
last = -1;
|
| 3186 |
|
|
deflt = 0;
|
| 3187 |
|
|
}
|
| 3188 |
|
|
|
| 3189 |
|
|
err:
|
| 3190 |
|
|
return 0;
|
| 3191 |
|
|
}
|
| 3192 |
|
|
|
| 3193 |
|
|
static int vt_unbind(struct con_driver *con)
|
| 3194 |
|
|
{
|
| 3195 |
|
|
const struct consw *csw = NULL;
|
| 3196 |
|
|
int i, more = 1, first = -1, last = -1, deflt = 0;
|
| 3197 |
|
|
|
| 3198 |
|
|
if (!con->con || !(con->flag & CON_DRIVER_FLAG_MODULE) ||
|
| 3199 |
|
|
con_is_graphics(con->con, con->first, con->last))
|
| 3200 |
|
|
goto err;
|
| 3201 |
|
|
|
| 3202 |
|
|
csw = con->con;
|
| 3203 |
|
|
|
| 3204 |
|
|
while (more) {
|
| 3205 |
|
|
more = 0;
|
| 3206 |
|
|
|
| 3207 |
|
|
for (i = con->first; i <= con->last; i++) {
|
| 3208 |
|
|
if (con_driver_map[i] == csw) {
|
| 3209 |
|
|
if (first == -1)
|
| 3210 |
|
|
first = i;
|
| 3211 |
|
|
last = i;
|
| 3212 |
|
|
more = 1;
|
| 3213 |
|
|
} else if (first != -1)
|
| 3214 |
|
|
break;
|
| 3215 |
|
|
}
|
| 3216 |
|
|
|
| 3217 |
|
|
if (first == 0 && last == MAX_NR_CONSOLES -1)
|
| 3218 |
|
|
deflt = 1;
|
| 3219 |
|
|
|
| 3220 |
|
|
if (first != -1)
|
| 3221 |
|
|
unbind_con_driver(csw, first, last, deflt);
|
| 3222 |
|
|
|
| 3223 |
|
|
first = -1;
|
| 3224 |
|
|
last = -1;
|
| 3225 |
|
|
deflt = 0;
|
| 3226 |
|
|
}
|
| 3227 |
|
|
|
| 3228 |
|
|
err:
|
| 3229 |
|
|
return 0;
|
| 3230 |
|
|
}
|
| 3231 |
|
|
#else
|
| 3232 |
|
|
static inline int vt_bind(struct con_driver *con)
|
| 3233 |
|
|
{
|
| 3234 |
|
|
return 0;
|
| 3235 |
|
|
}
|
| 3236 |
|
|
static inline int vt_unbind(struct con_driver *con)
|
| 3237 |
|
|
{
|
| 3238 |
|
|
return 0;
|
| 3239 |
|
|
}
|
| 3240 |
|
|
#endif /* CONFIG_VT_HW_CONSOLE_BINDING */
|
| 3241 |
|
|
|
| 3242 |
|
|
static ssize_t store_bind(struct device *dev, struct device_attribute *attr,
|
| 3243 |
|
|
const char *buf, size_t count)
|
| 3244 |
|
|
{
|
| 3245 |
|
|
struct con_driver *con = dev_get_drvdata(dev);
|
| 3246 |
|
|
int bind = simple_strtoul(buf, NULL, 0);
|
| 3247 |
|
|
|
| 3248 |
|
|
if (bind)
|
| 3249 |
|
|
vt_bind(con);
|
| 3250 |
|
|
else
|
| 3251 |
|
|
vt_unbind(con);
|
| 3252 |
|
|
|
| 3253 |
|
|
return count;
|
| 3254 |
|
|
}
|
| 3255 |
|
|
|
| 3256 |
|
|
static ssize_t show_bind(struct device *dev, struct device_attribute *attr,
|
| 3257 |
|
|
char *buf)
|
| 3258 |
|
|
{
|
| 3259 |
|
|
struct con_driver *con = dev_get_drvdata(dev);
|
| 3260 |
|
|
int bind = con_is_bound(con->con);
|
| 3261 |
|
|
|
| 3262 |
|
|
return snprintf(buf, PAGE_SIZE, "%i\n", bind);
|
| 3263 |
|
|
}
|
| 3264 |
|
|
|
| 3265 |
|
|
static ssize_t show_name(struct device *dev, struct device_attribute *attr,
|
| 3266 |
|
|
char *buf)
|
| 3267 |
|
|
{
|
| 3268 |
|
|
struct con_driver *con = dev_get_drvdata(dev);
|
| 3269 |
|
|
|
| 3270 |
|
|
return snprintf(buf, PAGE_SIZE, "%s %s\n",
|
| 3271 |
|
|
(con->flag & CON_DRIVER_FLAG_MODULE) ? "(M)" : "(S)",
|
| 3272 |
|
|
con->desc);
|
| 3273 |
|
|
|
| 3274 |
|
|
}
|
| 3275 |
|
|
|
| 3276 |
|
|
static struct device_attribute device_attrs[] = {
|
| 3277 |
|
|
__ATTR(bind, S_IRUGO|S_IWUSR, show_bind, store_bind),
|
| 3278 |
|
|
__ATTR(name, S_IRUGO, show_name, NULL),
|
| 3279 |
|
|
};
|
| 3280 |
|
|
|
| 3281 |
|
|
static int vtconsole_init_device(struct con_driver *con)
|
| 3282 |
|
|
{
|
| 3283 |
|
|
int i;
|
| 3284 |
|
|
int error = 0;
|
| 3285 |
|
|
|
| 3286 |
|
|
con->flag |= CON_DRIVER_FLAG_ATTR;
|
| 3287 |
|
|
dev_set_drvdata(con->dev, con);
|
| 3288 |
|
|
for (i = 0; i < ARRAY_SIZE(device_attrs); i++) {
|
| 3289 |
|
|
error = device_create_file(con->dev, &device_attrs[i]);
|
| 3290 |
|
|
if (error)
|
| 3291 |
|
|
break;
|
| 3292 |
|
|
}
|
| 3293 |
|
|
|
| 3294 |
|
|
if (error) {
|
| 3295 |
|
|
while (--i >= 0)
|
| 3296 |
|
|
device_remove_file(con->dev, &device_attrs[i]);
|
| 3297 |
|
|
con->flag &= ~CON_DRIVER_FLAG_ATTR;
|
| 3298 |
|
|
}
|
| 3299 |
|
|
|
| 3300 |
|
|
return error;
|
| 3301 |
|
|
}
|
| 3302 |
|
|
|
| 3303 |
|
|
static void vtconsole_deinit_device(struct con_driver *con)
|
| 3304 |
|
|
{
|
| 3305 |
|
|
int i;
|
| 3306 |
|
|
|
| 3307 |
|
|
if (con->flag & CON_DRIVER_FLAG_ATTR) {
|
| 3308 |
|
|
for (i = 0; i < ARRAY_SIZE(device_attrs); i++)
|
| 3309 |
|
|
device_remove_file(con->dev, &device_attrs[i]);
|
| 3310 |
|
|
con->flag &= ~CON_DRIVER_FLAG_ATTR;
|
| 3311 |
|
|
}
|
| 3312 |
|
|
}
|
| 3313 |
|
|
|
| 3314 |
|
|
/**
|
| 3315 |
|
|
* con_is_bound - checks if driver is bound to the console
|
| 3316 |
|
|
* @csw: console driver
|
| 3317 |
|
|
*
|
| 3318 |
|
|
* RETURNS: zero if unbound, nonzero if bound
|
| 3319 |
|
|
*
|
| 3320 |
|
|
* Drivers can call this and if zero, they should release
|
| 3321 |
|
|
* all resources allocated on con_startup()
|
| 3322 |
|
|
*/
|
| 3323 |
|
|
int con_is_bound(const struct consw *csw)
|
| 3324 |
|
|
{
|
| 3325 |
|
|
int i, bound = 0;
|
| 3326 |
|
|
|
| 3327 |
|
|
for (i = 0; i < MAX_NR_CONSOLES; i++) {
|
| 3328 |
|
|
if (con_driver_map[i] == csw) {
|
| 3329 |
|
|
bound = 1;
|
| 3330 |
|
|
break;
|
| 3331 |
|
|
}
|
| 3332 |
|
|
}
|
| 3333 |
|
|
|
| 3334 |
|
|
return bound;
|
| 3335 |
|
|
}
|
| 3336 |
|
|
EXPORT_SYMBOL(con_is_bound);
|
| 3337 |
|
|
|
| 3338 |
|
|
/**
|
| 3339 |
|
|
* register_con_driver - register console driver to console layer
|
| 3340 |
|
|
* @csw: console driver
|
| 3341 |
|
|
* @first: the first console to take over, minimum value is 0
|
| 3342 |
|
|
* @last: the last console to take over, maximum value is MAX_NR_CONSOLES -1
|
| 3343 |
|
|
*
|
| 3344 |
|
|
* DESCRIPTION: This function registers a console driver which can later
|
| 3345 |
|
|
* bind to a range of consoles specified by @first and @last. It will
|
| 3346 |
|
|
* also initialize the console driver by calling con_startup().
|
| 3347 |
|
|
*/
|
| 3348 |
|
|
int register_con_driver(const struct consw *csw, int first, int last)
|
| 3349 |
|
|
{
|
| 3350 |
|
|
struct module *owner = csw->owner;
|
| 3351 |
|
|
struct con_driver *con_driver;
|
| 3352 |
|
|
const char *desc;
|
| 3353 |
|
|
int i, retval = 0;
|
| 3354 |
|
|
|
| 3355 |
|
|
if (!try_module_get(owner))
|
| 3356 |
|
|
return -ENODEV;
|
| 3357 |
|
|
|
| 3358 |
|
|
acquire_console_sem();
|
| 3359 |
|
|
|
| 3360 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 3361 |
|
|
con_driver = ®istered_con_driver[i];
|
| 3362 |
|
|
|
| 3363 |
|
|
/* already registered */
|
| 3364 |
|
|
if (con_driver->con == csw)
|
| 3365 |
|
|
retval = -EINVAL;
|
| 3366 |
|
|
}
|
| 3367 |
|
|
|
| 3368 |
|
|
if (retval)
|
| 3369 |
|
|
goto err;
|
| 3370 |
|
|
|
| 3371 |
|
|
desc = csw->con_startup();
|
| 3372 |
|
|
|
| 3373 |
|
|
if (!desc)
|
| 3374 |
|
|
goto err;
|
| 3375 |
|
|
|
| 3376 |
|
|
retval = -EINVAL;
|
| 3377 |
|
|
|
| 3378 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 3379 |
|
|
con_driver = ®istered_con_driver[i];
|
| 3380 |
|
|
|
| 3381 |
|
|
if (con_driver->con == NULL) {
|
| 3382 |
|
|
con_driver->con = csw;
|
| 3383 |
|
|
con_driver->desc = desc;
|
| 3384 |
|
|
con_driver->node = i;
|
| 3385 |
|
|
con_driver->flag = CON_DRIVER_FLAG_MODULE |
|
| 3386 |
|
|
CON_DRIVER_FLAG_INIT;
|
| 3387 |
|
|
con_driver->first = first;
|
| 3388 |
|
|
con_driver->last = last;
|
| 3389 |
|
|
retval = 0;
|
| 3390 |
|
|
break;
|
| 3391 |
|
|
}
|
| 3392 |
|
|
}
|
| 3393 |
|
|
|
| 3394 |
|
|
if (retval)
|
| 3395 |
|
|
goto err;
|
| 3396 |
|
|
|
| 3397 |
|
|
con_driver->dev = device_create(vtconsole_class, NULL,
|
| 3398 |
|
|
MKDEV(0, con_driver->node),
|
| 3399 |
|
|
"vtcon%i", con_driver->node);
|
| 3400 |
|
|
|
| 3401 |
|
|
if (IS_ERR(con_driver->dev)) {
|
| 3402 |
|
|
printk(KERN_WARNING "Unable to create device for %s; "
|
| 3403 |
|
|
"errno = %ld\n", con_driver->desc,
|
| 3404 |
|
|
PTR_ERR(con_driver->dev));
|
| 3405 |
|
|
con_driver->dev = NULL;
|
| 3406 |
|
|
} else {
|
| 3407 |
|
|
vtconsole_init_device(con_driver);
|
| 3408 |
|
|
}
|
| 3409 |
|
|
|
| 3410 |
|
|
err:
|
| 3411 |
|
|
release_console_sem();
|
| 3412 |
|
|
module_put(owner);
|
| 3413 |
|
|
return retval;
|
| 3414 |
|
|
}
|
| 3415 |
|
|
EXPORT_SYMBOL(register_con_driver);
|
| 3416 |
|
|
|
| 3417 |
|
|
/**
|
| 3418 |
|
|
* unregister_con_driver - unregister console driver from console layer
|
| 3419 |
|
|
* @csw: console driver
|
| 3420 |
|
|
*
|
| 3421 |
|
|
* DESCRIPTION: All drivers that registers to the console layer must
|
| 3422 |
|
|
* call this function upon exit, or if the console driver is in a state
|
| 3423 |
|
|
* where it won't be able to handle console services, such as the
|
| 3424 |
|
|
* framebuffer console without loaded framebuffer drivers.
|
| 3425 |
|
|
*
|
| 3426 |
|
|
* The driver must unbind first prior to unregistration.
|
| 3427 |
|
|
*/
|
| 3428 |
|
|
int unregister_con_driver(const struct consw *csw)
|
| 3429 |
|
|
{
|
| 3430 |
|
|
int i, retval = -ENODEV;
|
| 3431 |
|
|
|
| 3432 |
|
|
acquire_console_sem();
|
| 3433 |
|
|
|
| 3434 |
|
|
/* cannot unregister a bound driver */
|
| 3435 |
|
|
if (con_is_bound(csw))
|
| 3436 |
|
|
goto err;
|
| 3437 |
|
|
|
| 3438 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 3439 |
|
|
struct con_driver *con_driver = ®istered_con_driver[i];
|
| 3440 |
|
|
|
| 3441 |
|
|
if (con_driver->con == csw &&
|
| 3442 |
|
|
con_driver->flag & CON_DRIVER_FLAG_MODULE) {
|
| 3443 |
|
|
vtconsole_deinit_device(con_driver);
|
| 3444 |
|
|
device_destroy(vtconsole_class,
|
| 3445 |
|
|
MKDEV(0, con_driver->node));
|
| 3446 |
|
|
con_driver->con = NULL;
|
| 3447 |
|
|
con_driver->desc = NULL;
|
| 3448 |
|
|
con_driver->dev = NULL;
|
| 3449 |
|
|
con_driver->node = 0;
|
| 3450 |
|
|
con_driver->flag = 0;
|
| 3451 |
|
|
con_driver->first = 0;
|
| 3452 |
|
|
con_driver->last = 0;
|
| 3453 |
|
|
retval = 0;
|
| 3454 |
|
|
break;
|
| 3455 |
|
|
}
|
| 3456 |
|
|
}
|
| 3457 |
|
|
err:
|
| 3458 |
|
|
release_console_sem();
|
| 3459 |
|
|
return retval;
|
| 3460 |
|
|
}
|
| 3461 |
|
|
EXPORT_SYMBOL(unregister_con_driver);
|
| 3462 |
|
|
|
| 3463 |
|
|
/*
|
| 3464 |
|
|
* If we support more console drivers, this function is used
|
| 3465 |
|
|
* when a driver wants to take over some existing consoles
|
| 3466 |
|
|
* and become default driver for newly opened ones.
|
| 3467 |
|
|
*
|
| 3468 |
|
|
* take_over_console is basically a register followed by unbind
|
| 3469 |
|
|
*/
|
| 3470 |
|
|
int take_over_console(const struct consw *csw, int first, int last, int deflt)
|
| 3471 |
|
|
{
|
| 3472 |
|
|
int err;
|
| 3473 |
|
|
|
| 3474 |
|
|
err = register_con_driver(csw, first, last);
|
| 3475 |
|
|
|
| 3476 |
|
|
if (!err)
|
| 3477 |
|
|
bind_con_driver(csw, first, last, deflt);
|
| 3478 |
|
|
|
| 3479 |
|
|
return err;
|
| 3480 |
|
|
}
|
| 3481 |
|
|
|
| 3482 |
|
|
/*
|
| 3483 |
|
|
* give_up_console is a wrapper to unregister_con_driver. It will only
|
| 3484 |
|
|
* work if driver is fully unbound.
|
| 3485 |
|
|
*/
|
| 3486 |
|
|
void give_up_console(const struct consw *csw)
|
| 3487 |
|
|
{
|
| 3488 |
|
|
unregister_con_driver(csw);
|
| 3489 |
|
|
}
|
| 3490 |
|
|
|
| 3491 |
|
|
static int __init vtconsole_class_init(void)
|
| 3492 |
|
|
{
|
| 3493 |
|
|
int i;
|
| 3494 |
|
|
|
| 3495 |
|
|
vtconsole_class = class_create(THIS_MODULE, "vtconsole");
|
| 3496 |
|
|
if (IS_ERR(vtconsole_class)) {
|
| 3497 |
|
|
printk(KERN_WARNING "Unable to create vt console class; "
|
| 3498 |
|
|
"errno = %ld\n", PTR_ERR(vtconsole_class));
|
| 3499 |
|
|
vtconsole_class = NULL;
|
| 3500 |
|
|
}
|
| 3501 |
|
|
|
| 3502 |
|
|
/* Add system drivers to sysfs */
|
| 3503 |
|
|
for (i = 0; i < MAX_NR_CON_DRIVER; i++) {
|
| 3504 |
|
|
struct con_driver *con = ®istered_con_driver[i];
|
| 3505 |
|
|
|
| 3506 |
|
|
if (con->con && !con->dev) {
|
| 3507 |
|
|
con->dev = device_create(vtconsole_class, NULL,
|
| 3508 |
|
|
MKDEV(0, con->node),
|
| 3509 |
|
|
"vtcon%i", con->node);
|
| 3510 |
|
|
|
| 3511 |
|
|
if (IS_ERR(con->dev)) {
|
| 3512 |
|
|
printk(KERN_WARNING "Unable to create "
|
| 3513 |
|
|
"device for %s; errno = %ld\n",
|
| 3514 |
|
|
con->desc, PTR_ERR(con->dev));
|
| 3515 |
|
|
con->dev = NULL;
|
| 3516 |
|
|
} else {
|
| 3517 |
|
|
vtconsole_init_device(con);
|
| 3518 |
|
|
}
|
| 3519 |
|
|
}
|
| 3520 |
|
|
}
|
| 3521 |
|
|
|
| 3522 |
|
|
return 0;
|
| 3523 |
|
|
}
|
| 3524 |
|
|
postcore_initcall(vtconsole_class_init);
|
| 3525 |
|
|
|
| 3526 |
|
|
#endif
|
| 3527 |
|
|
|
| 3528 |
|
|
/*
|
| 3529 |
|
|
* Screen blanking
|
| 3530 |
|
|
*/
|
| 3531 |
|
|
|
| 3532 |
|
|
static int set_vesa_blanking(char __user *p)
|
| 3533 |
|
|
{
|
| 3534 |
|
|
unsigned int mode;
|
| 3535 |
|
|
|
| 3536 |
|
|
if (get_user(mode, p + 1))
|
| 3537 |
|
|
return -EFAULT;
|
| 3538 |
|
|
|
| 3539 |
|
|
vesa_blank_mode = (mode < 4) ? mode : 0;
|
| 3540 |
|
|
return 0;
|
| 3541 |
|
|
}
|
| 3542 |
|
|
|
| 3543 |
|
|
void do_blank_screen(int entering_gfx)
|
| 3544 |
|
|
{
|
| 3545 |
|
|
struct vc_data *vc = vc_cons[fg_console].d;
|
| 3546 |
|
|
int i;
|
| 3547 |
|
|
|
| 3548 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 3549 |
|
|
|
| 3550 |
|
|
if (console_blanked) {
|
| 3551 |
|
|
if (blank_state == blank_vesa_wait) {
|
| 3552 |
|
|
blank_state = blank_off;
|
| 3553 |
|
|
vc->vc_sw->con_blank(vc, vesa_blank_mode + 1, 0);
|
| 3554 |
|
|
}
|
| 3555 |
|
|
return;
|
| 3556 |
|
|
}
|
| 3557 |
|
|
|
| 3558 |
|
|
/* entering graphics mode? */
|
| 3559 |
|
|
if (entering_gfx) {
|
| 3560 |
|
|
hide_cursor(vc);
|
| 3561 |
|
|
save_screen(vc);
|
| 3562 |
|
|
vc->vc_sw->con_blank(vc, -1, 1);
|
| 3563 |
|
|
console_blanked = fg_console + 1;
|
| 3564 |
|
|
blank_state = blank_off;
|
| 3565 |
|
|
set_origin(vc);
|
| 3566 |
|
|
return;
|
| 3567 |
|
|
}
|
| 3568 |
|
|
|
| 3569 |
|
|
if (blank_state != blank_normal_wait)
|
| 3570 |
|
|
return;
|
| 3571 |
|
|
blank_state = blank_off;
|
| 3572 |
|
|
|
| 3573 |
|
|
/* don't blank graphics */
|
| 3574 |
|
|
if (vc->vc_mode != KD_TEXT) {
|
| 3575 |
|
|
console_blanked = fg_console + 1;
|
| 3576 |
|
|
return;
|
| 3577 |
|
|
}
|
| 3578 |
|
|
|
| 3579 |
|
|
hide_cursor(vc);
|
| 3580 |
|
|
del_timer_sync(&console_timer);
|
| 3581 |
|
|
blank_timer_expired = 0;
|
| 3582 |
|
|
|
| 3583 |
|
|
save_screen(vc);
|
| 3584 |
|
|
/* In case we need to reset origin, blanking hook returns 1 */
|
| 3585 |
|
|
i = vc->vc_sw->con_blank(vc, vesa_off_interval ? 1 : (vesa_blank_mode + 1), 0);
|
| 3586 |
|
|
console_blanked = fg_console + 1;
|
| 3587 |
|
|
if (i)
|
| 3588 |
|
|
set_origin(vc);
|
| 3589 |
|
|
|
| 3590 |
|
|
if (console_blank_hook && console_blank_hook(1))
|
| 3591 |
|
|
return;
|
| 3592 |
|
|
|
| 3593 |
|
|
if (vesa_off_interval && vesa_blank_mode) {
|
| 3594 |
|
|
blank_state = blank_vesa_wait;
|
| 3595 |
|
|
mod_timer(&console_timer, jiffies + vesa_off_interval);
|
| 3596 |
|
|
}
|
| 3597 |
|
|
}
|
| 3598 |
|
|
EXPORT_SYMBOL(do_blank_screen);
|
| 3599 |
|
|
|
| 3600 |
|
|
/*
|
| 3601 |
|
|
* Called by timer as well as from vt_console_driver
|
| 3602 |
|
|
*/
|
| 3603 |
|
|
void do_unblank_screen(int leaving_gfx)
|
| 3604 |
|
|
{
|
| 3605 |
|
|
struct vc_data *vc;
|
| 3606 |
|
|
|
| 3607 |
|
|
/* This should now always be called from a "sane" (read: can schedule)
|
| 3608 |
|
|
* context for the sake of the low level drivers, except in the special
|
| 3609 |
|
|
* case of oops_in_progress
|
| 3610 |
|
|
*/
|
| 3611 |
|
|
if (!oops_in_progress)
|
| 3612 |
|
|
might_sleep();
|
| 3613 |
|
|
|
| 3614 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 3615 |
|
|
|
| 3616 |
|
|
ignore_poke = 0;
|
| 3617 |
|
|
if (!console_blanked)
|
| 3618 |
|
|
return;
|
| 3619 |
|
|
if (!vc_cons_allocated(fg_console)) {
|
| 3620 |
|
|
/* impossible */
|
| 3621 |
|
|
printk("unblank_screen: tty %d not allocated ??\n", fg_console+1);
|
| 3622 |
|
|
return;
|
| 3623 |
|
|
}
|
| 3624 |
|
|
vc = vc_cons[fg_console].d;
|
| 3625 |
|
|
if (vc->vc_mode != KD_TEXT)
|
| 3626 |
|
|
return; /* but leave console_blanked != 0 */
|
| 3627 |
|
|
|
| 3628 |
|
|
if (blankinterval) {
|
| 3629 |
|
|
mod_timer(&console_timer, jiffies + blankinterval);
|
| 3630 |
|
|
blank_state = blank_normal_wait;
|
| 3631 |
|
|
}
|
| 3632 |
|
|
|
| 3633 |
|
|
console_blanked = 0;
|
| 3634 |
|
|
if (vc->vc_sw->con_blank(vc, 0, leaving_gfx))
|
| 3635 |
|
|
/* Low-level driver cannot restore -> do it ourselves */
|
| 3636 |
|
|
update_screen(vc);
|
| 3637 |
|
|
if (console_blank_hook)
|
| 3638 |
|
|
console_blank_hook(0);
|
| 3639 |
|
|
set_palette(vc);
|
| 3640 |
|
|
set_cursor(vc);
|
| 3641 |
|
|
}
|
| 3642 |
|
|
EXPORT_SYMBOL(do_unblank_screen);
|
| 3643 |
|
|
|
| 3644 |
|
|
/*
|
| 3645 |
|
|
* This is called by the outside world to cause a forced unblank, mostly for
|
| 3646 |
|
|
* oopses. Currently, I just call do_unblank_screen(0), but we could eventually
|
| 3647 |
|
|
* call it with 1 as an argument and so force a mode restore... that may kill
|
| 3648 |
|
|
* X or at least garbage the screen but would also make the Oops visible...
|
| 3649 |
|
|
*/
|
| 3650 |
|
|
void unblank_screen(void)
|
| 3651 |
|
|
{
|
| 3652 |
|
|
do_unblank_screen(0);
|
| 3653 |
|
|
}
|
| 3654 |
|
|
|
| 3655 |
|
|
/*
|
| 3656 |
|
|
* We defer the timer blanking to work queue so it can take the console mutex
|
| 3657 |
|
|
* (console operations can still happen at irq time, but only from printk which
|
| 3658 |
|
|
* has the console mutex. Not perfect yet, but better than no locking
|
| 3659 |
|
|
*/
|
| 3660 |
|
|
static void blank_screen_t(unsigned long dummy)
|
| 3661 |
|
|
{
|
| 3662 |
|
|
if (unlikely(!keventd_up())) {
|
| 3663 |
|
|
mod_timer(&console_timer, jiffies + blankinterval);
|
| 3664 |
|
|
return;
|
| 3665 |
|
|
}
|
| 3666 |
|
|
blank_timer_expired = 1;
|
| 3667 |
|
|
schedule_work(&console_work);
|
| 3668 |
|
|
}
|
| 3669 |
|
|
|
| 3670 |
|
|
void poke_blanked_console(void)
|
| 3671 |
|
|
{
|
| 3672 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 3673 |
|
|
|
| 3674 |
|
|
/* Add this so we quickly catch whoever might call us in a non
|
| 3675 |
|
|
* safe context. Nowadays, unblank_screen() isn't to be called in
|
| 3676 |
|
|
* atomic contexts and is allowed to schedule (with the special case
|
| 3677 |
|
|
* of oops_in_progress, but that isn't of any concern for this
|
| 3678 |
|
|
* function. --BenH.
|
| 3679 |
|
|
*/
|
| 3680 |
|
|
might_sleep();
|
| 3681 |
|
|
|
| 3682 |
|
|
/* This isn't perfectly race free, but a race here would be mostly harmless,
|
| 3683 |
|
|
* at worse, we'll do a spurrious blank and it's unlikely
|
| 3684 |
|
|
*/
|
| 3685 |
|
|
del_timer(&console_timer);
|
| 3686 |
|
|
blank_timer_expired = 0;
|
| 3687 |
|
|
|
| 3688 |
|
|
if (ignore_poke || !vc_cons[fg_console].d || vc_cons[fg_console].d->vc_mode == KD_GRAPHICS)
|
| 3689 |
|
|
return;
|
| 3690 |
|
|
if (console_blanked)
|
| 3691 |
|
|
unblank_screen();
|
| 3692 |
|
|
else if (blankinterval) {
|
| 3693 |
|
|
mod_timer(&console_timer, jiffies + blankinterval);
|
| 3694 |
|
|
blank_state = blank_normal_wait;
|
| 3695 |
|
|
}
|
| 3696 |
|
|
}
|
| 3697 |
|
|
|
| 3698 |
|
|
/*
|
| 3699 |
|
|
* Palettes
|
| 3700 |
|
|
*/
|
| 3701 |
|
|
|
| 3702 |
|
|
static void set_palette(struct vc_data *vc)
|
| 3703 |
|
|
{
|
| 3704 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 3705 |
|
|
|
| 3706 |
|
|
if (vc->vc_mode != KD_GRAPHICS)
|
| 3707 |
|
|
vc->vc_sw->con_set_palette(vc, color_table);
|
| 3708 |
|
|
}
|
| 3709 |
|
|
|
| 3710 |
|
|
static int set_get_cmap(unsigned char __user *arg, int set)
|
| 3711 |
|
|
{
|
| 3712 |
|
|
int i, j, k;
|
| 3713 |
|
|
|
| 3714 |
|
|
WARN_CONSOLE_UNLOCKED();
|
| 3715 |
|
|
|
| 3716 |
|
|
for (i = 0; i < 16; i++)
|
| 3717 |
|
|
if (set) {
|
| 3718 |
|
|
get_user(default_red[i], arg++);
|
| 3719 |
|
|
get_user(default_grn[i], arg++);
|
| 3720 |
|
|
get_user(default_blu[i], arg++);
|
| 3721 |
|
|
} else {
|
| 3722 |
|
|
put_user(default_red[i], arg++);
|
| 3723 |
|
|
put_user(default_grn[i], arg++);
|
| 3724 |
|
|
put_user(default_blu[i], arg++);
|
| 3725 |
|
|
}
|
| 3726 |
|
|
if (set) {
|
| 3727 |
|
|
for (i = 0; i < MAX_NR_CONSOLES; i++)
|
| 3728 |
|
|
if (vc_cons_allocated(i)) {
|
| 3729 |
|
|
for (j = k = 0; j < 16; j++) {
|
| 3730 |
|
|
vc_cons[i].d->vc_palette[k++] = default_red[j];
|
| 3731 |
|
|
vc_cons[i].d->vc_palette[k++] = default_grn[j];
|
| 3732 |
|
|
vc_cons[i].d->vc_palette[k++] = default_blu[j];
|
| 3733 |
|
|
}
|
| 3734 |
|
|
set_palette(vc_cons[i].d);
|
| 3735 |
|
|
}
|
| 3736 |
|
|
}
|
| 3737 |
|
|
return 0;
|
| 3738 |
|
|
}
|
| 3739 |
|
|
|
| 3740 |
|
|
/*
|
| 3741 |
|
|
* Load palette into the DAC registers. arg points to a colour
|
| 3742 |
|
|
* map, 3 bytes per colour, 16 colours, range from 0 to 255.
|
| 3743 |
|
|
*/
|
| 3744 |
|
|
|
| 3745 |
|
|
int con_set_cmap(unsigned char __user *arg)
|
| 3746 |
|
|
{
|
| 3747 |
|
|
int rc;
|
| 3748 |
|
|
|
| 3749 |
|
|
acquire_console_sem();
|
| 3750 |
|
|
rc = set_get_cmap (arg,1);
|
| 3751 |
|
|
release_console_sem();
|
| 3752 |
|
|
|
| 3753 |
|
|
return rc;
|
| 3754 |
|
|
}
|
| 3755 |
|
|
|
| 3756 |
|
|
int con_get_cmap(unsigned char __user *arg)
|
| 3757 |
|
|
{
|
| 3758 |
|
|
int rc;
|
| 3759 |
|
|
|
| 3760 |
|
|
acquire_console_sem();
|
| 3761 |
|
|
rc = set_get_cmap (arg,0);
|
| 3762 |
|
|
release_console_sem();
|
| 3763 |
|
|
|
| 3764 |
|
|
return rc;
|
| 3765 |
|
|
}
|
| 3766 |
|
|
|
| 3767 |
|
|
void reset_palette(struct vc_data *vc)
|
| 3768 |
|
|
{
|
| 3769 |
|
|
int j, k;
|
| 3770 |
|
|
for (j=k=0; j<16; j++) {
|
| 3771 |
|
|
vc->vc_palette[k++] = default_red[j];
|
| 3772 |
|
|
vc->vc_palette[k++] = default_grn[j];
|
| 3773 |
|
|
vc->vc_palette[k++] = default_blu[j];
|
| 3774 |
|
|
}
|
| 3775 |
|
|
set_palette(vc);
|
| 3776 |
|
|
}
|
| 3777 |
|
|
|
| 3778 |
|
|
/*
|
| 3779 |
|
|
* Font switching
|
| 3780 |
|
|
*
|
| 3781 |
|
|
* Currently we only support fonts up to 32 pixels wide, at a maximum height
|
| 3782 |
|
|
* of 32 pixels. Userspace fontdata is stored with 32 bytes (shorts/ints,
|
| 3783 |
|
|
* depending on width) reserved for each character which is kinda wasty, but
|
| 3784 |
|
|
* this is done in order to maintain compatibility with the EGA/VGA fonts. It
|
| 3785 |
|
|
* is upto the actual low-level console-driver convert data into its favorite
|
| 3786 |
|
|
* format (maybe we should add a `fontoffset' field to the `display'
|
| 3787 |
|
|
* structure so we won't have to convert the fontdata all the time.
|
| 3788 |
|
|
* /Jes
|
| 3789 |
|
|
*/
|
| 3790 |
|
|
|
| 3791 |
|
|
#define max_font_size 65536
|
| 3792 |
|
|
|
| 3793 |
|
|
static int con_font_get(struct vc_data *vc, struct console_font_op *op)
|
| 3794 |
|
|
{
|
| 3795 |
|
|
struct console_font font;
|
| 3796 |
|
|
int rc = -EINVAL;
|
| 3797 |
|
|
int c;
|
| 3798 |
|
|
|
| 3799 |
|
|
if (vc->vc_mode != KD_TEXT)
|
| 3800 |
|
|
return -EINVAL;
|
| 3801 |
|
|
|
| 3802 |
|
|
if (op->data) {
|
| 3803 |
|
|
font.data = kmalloc(max_font_size, GFP_KERNEL);
|
| 3804 |
|
|
if (!font.data)
|
| 3805 |
|
|
return -ENOMEM;
|
| 3806 |
|
|
} else
|
| 3807 |
|
|
font.data = NULL;
|
| 3808 |
|
|
|
| 3809 |
|
|
acquire_console_sem();
|
| 3810 |
|
|
if (vc->vc_sw->con_font_get)
|
| 3811 |
|
|
rc = vc->vc_sw->con_font_get(vc, &font);
|
| 3812 |
|
|
else
|
| 3813 |
|
|
rc = -ENOSYS;
|
| 3814 |
|
|
release_console_sem();
|
| 3815 |
|
|
|
| 3816 |
|
|
if (rc)
|
| 3817 |
|
|
goto out;
|
| 3818 |
|
|
|
| 3819 |
|
|
c = (font.width+7)/8 * 32 * font.charcount;
|
| 3820 |
|
|
|
| 3821 |
|
|
if (op->data && font.charcount > op->charcount)
|
| 3822 |
|
|
rc = -ENOSPC;
|
| 3823 |
|
|
if (!(op->flags & KD_FONT_FLAG_OLD)) {
|
| 3824 |
|
|
if (font.width > op->width || font.height > op->height)
|
| 3825 |
|
|
rc = -ENOSPC;
|
| 3826 |
|
|
} else {
|
| 3827 |
|
|
if (font.width != 8)
|
| 3828 |
|
|
rc = -EIO;
|
| 3829 |
|
|
else if ((op->height && font.height > op->height) ||
|
| 3830 |
|
|
font.height > 32)
|
| 3831 |
|
|
rc = -ENOSPC;
|
| 3832 |
|
|
}
|
| 3833 |
|
|
if (rc)
|
| 3834 |
|
|
goto out;
|
| 3835 |
|
|
|
| 3836 |
|
|
op->height = font.height;
|
| 3837 |
|
|
op->width = font.width;
|
| 3838 |
|
|
op->charcount = font.charcount;
|
| 3839 |
|
|
|
| 3840 |
|
|
if (op->data && copy_to_user(op->data, font.data, c))
|
| 3841 |
|
|
rc = -EFAULT;
|
| 3842 |
|
|
|
| 3843 |
|
|
out:
|
| 3844 |
|
|
kfree(font.data);
|
| 3845 |
|
|
return rc;
|
| 3846 |
|
|
}
|
| 3847 |
|
|
|
| 3848 |
|
|
static int con_font_set(struct vc_data *vc, struct console_font_op *op)
|
| 3849 |
|
|
{
|
| 3850 |
|
|
struct console_font font;
|
| 3851 |
|
|
int rc = -EINVAL;
|
| 3852 |
|
|
int size;
|
| 3853 |
|
|
|
| 3854 |
|
|
if (vc->vc_mode != KD_TEXT)
|
| 3855 |
|
|
return -EINVAL;
|
| 3856 |
|
|
if (!op->data)
|
| 3857 |
|
|
return -EINVAL;
|
| 3858 |
|
|
if (op->charcount > 512)
|
| 3859 |
|
|
return -EINVAL;
|
| 3860 |
|
|
if (!op->height) { /* Need to guess font height [compat] */
|
| 3861 |
|
|
int h, i;
|
| 3862 |
|
|
u8 __user *charmap = op->data;
|
| 3863 |
|
|
u8 tmp;
|
| 3864 |
|
|
|
| 3865 |
|
|
/* If from KDFONTOP ioctl, don't allow things which can be done in userland,
|
| 3866 |
|
|
so that we can get rid of this soon */
|
| 3867 |
|
|
if (!(op->flags & KD_FONT_FLAG_OLD))
|
| 3868 |
|
|
return -EINVAL;
|
| 3869 |
|
|
for (h = 32; h > 0; h--)
|
| 3870 |
|
|
for (i = 0; i < op->charcount; i++) {
|
| 3871 |
|
|
if (get_user(tmp, &charmap[32*i+h-1]))
|
| 3872 |
|
|
return -EFAULT;
|
| 3873 |
|
|
if (tmp)
|
| 3874 |
|
|
goto nonzero;
|
| 3875 |
|
|
}
|
| 3876 |
|
|
return -EINVAL;
|
| 3877 |
|
|
nonzero:
|
| 3878 |
|
|
op->height = h;
|
| 3879 |
|
|
}
|
| 3880 |
|
|
if (op->width <= 0 || op->width > 32 || op->height > 32)
|
| 3881 |
|
|
return -EINVAL;
|
| 3882 |
|
|
size = (op->width+7)/8 * 32 * op->charcount;
|
| 3883 |
|
|
if (size > max_font_size)
|
| 3884 |
|
|
return -ENOSPC;
|
| 3885 |
|
|
font.charcount = op->charcount;
|
| 3886 |
|
|
font.height = op->height;
|
| 3887 |
|
|
font.width = op->width;
|
| 3888 |
|
|
font.data = kmalloc(size, GFP_KERNEL);
|
| 3889 |
|
|
if (!font.data)
|
| 3890 |
|
|
return -ENOMEM;
|
| 3891 |
|
|
if (copy_from_user(font.data, op->data, size)) {
|
| 3892 |
|
|
kfree(font.data);
|
| 3893 |
|
|
return -EFAULT;
|
| 3894 |
|
|
}
|
| 3895 |
|
|
acquire_console_sem();
|
| 3896 |
|
|
if (vc->vc_sw->con_font_set)
|
| 3897 |
|
|
rc = vc->vc_sw->con_font_set(vc, &font, op->flags);
|
| 3898 |
|
|
else
|
| 3899 |
|
|
rc = -ENOSYS;
|
| 3900 |
|
|
release_console_sem();
|
| 3901 |
|
|
kfree(font.data);
|
| 3902 |
|
|
return rc;
|
| 3903 |
|
|
}
|
| 3904 |
|
|
|
| 3905 |
|
|
static int con_font_default(struct vc_data *vc, struct console_font_op *op)
|
| 3906 |
|
|
{
|
| 3907 |
|
|
struct console_font font = {.width = op->width, .height = op->height};
|
| 3908 |
|
|
char name[MAX_FONT_NAME];
|
| 3909 |
|
|
char *s = name;
|
| 3910 |
|
|
int rc;
|
| 3911 |
|
|
|
| 3912 |
|
|
if (vc->vc_mode != KD_TEXT)
|
| 3913 |
|
|
return -EINVAL;
|
| 3914 |
|
|
|
| 3915 |
|
|
if (!op->data)
|
| 3916 |
|
|
s = NULL;
|
| 3917 |
|
|
else if (strncpy_from_user(name, op->data, MAX_FONT_NAME - 1) < 0)
|
| 3918 |
|
|
return -EFAULT;
|
| 3919 |
|
|
else
|
| 3920 |
|
|
name[MAX_FONT_NAME - 1] = 0;
|
| 3921 |
|
|
|
| 3922 |
|
|
acquire_console_sem();
|
| 3923 |
|
|
if (vc->vc_sw->con_font_default)
|
| 3924 |
|
|
rc = vc->vc_sw->con_font_default(vc, &font, s);
|
| 3925 |
|
|
else
|
| 3926 |
|
|
rc = -ENOSYS;
|
| 3927 |
|
|
release_console_sem();
|
| 3928 |
|
|
if (!rc) {
|
| 3929 |
|
|
op->width = font.width;
|
| 3930 |
|
|
op->height = font.height;
|
| 3931 |
|
|
}
|
| 3932 |
|
|
return rc;
|
| 3933 |
|
|
}
|
| 3934 |
|
|
|
| 3935 |
|
|
static int con_font_copy(struct vc_data *vc, struct console_font_op *op)
|
| 3936 |
|
|
{
|
| 3937 |
|
|
int con = op->height;
|
| 3938 |
|
|
int rc;
|
| 3939 |
|
|
|
| 3940 |
|
|
if (vc->vc_mode != KD_TEXT)
|
| 3941 |
|
|
return -EINVAL;
|
| 3942 |
|
|
|
| 3943 |
|
|
acquire_console_sem();
|
| 3944 |
|
|
if (!vc->vc_sw->con_font_copy)
|
| 3945 |
|
|
rc = -ENOSYS;
|
| 3946 |
|
|
else if (con < 0 || !vc_cons_allocated(con))
|
| 3947 |
|
|
rc = -ENOTTY;
|
| 3948 |
|
|
else if (con == vc->vc_num) /* nothing to do */
|
| 3949 |
|
|
rc = 0;
|
| 3950 |
|
|
else
|
| 3951 |
|
|
rc = vc->vc_sw->con_font_copy(vc, con);
|
| 3952 |
|
|
release_console_sem();
|
| 3953 |
|
|
return rc;
|
| 3954 |
|
|
}
|
| 3955 |
|
|
|
| 3956 |
|
|
int con_font_op(struct vc_data *vc, struct console_font_op *op)
|
| 3957 |
|
|
{
|
| 3958 |
|
|
switch (op->op) {
|
| 3959 |
|
|
case KD_FONT_OP_SET:
|
| 3960 |
|
|
return con_font_set(vc, op);
|
| 3961 |
|
|
case KD_FONT_OP_GET:
|
| 3962 |
|
|
return con_font_get(vc, op);
|
| 3963 |
|
|
case KD_FONT_OP_SET_DEFAULT:
|
| 3964 |
|
|
return con_font_default(vc, op);
|
| 3965 |
|
|
case KD_FONT_OP_COPY:
|
| 3966 |
|
|
return con_font_copy(vc, op);
|
| 3967 |
|
|
}
|
| 3968 |
|
|
return -ENOSYS;
|
| 3969 |
|
|
}
|
| 3970 |
|
|
|
| 3971 |
|
|
/*
|
| 3972 |
|
|
* Interface exported to selection and vcs.
|
| 3973 |
|
|
*/
|
| 3974 |
|
|
|
| 3975 |
|
|
/* used by selection */
|
| 3976 |
|
|
u16 screen_glyph(struct vc_data *vc, int offset)
|
| 3977 |
|
|
{
|
| 3978 |
|
|
u16 w = scr_readw(screenpos(vc, offset, 1));
|
| 3979 |
|
|
u16 c = w & 0xff;
|
| 3980 |
|
|
|
| 3981 |
|
|
if (w & vc->vc_hi_font_mask)
|
| 3982 |
|
|
c |= 0x100;
|
| 3983 |
|
|
return c;
|
| 3984 |
|
|
}
|
| 3985 |
|
|
|
| 3986 |
|
|
/* used by vcs - note the word offset */
|
| 3987 |
|
|
unsigned short *screen_pos(struct vc_data *vc, int w_offset, int viewed)
|
| 3988 |
|
|
{
|
| 3989 |
|
|
return screenpos(vc, 2 * w_offset, viewed);
|
| 3990 |
|
|
}
|
| 3991 |
|
|
|
| 3992 |
|
|
void getconsxy(struct vc_data *vc, unsigned char *p)
|
| 3993 |
|
|
{
|
| 3994 |
|
|
p[0] = vc->vc_x;
|
| 3995 |
|
|
p[1] = vc->vc_y;
|
| 3996 |
|
|
}
|
| 3997 |
|
|
|
| 3998 |
|
|
void putconsxy(struct vc_data *vc, unsigned char *p)
|
| 3999 |
|
|
{
|
| 4000 |
|
|
hide_cursor(vc);
|
| 4001 |
|
|
gotoxy(vc, p[0], p[1]);
|
| 4002 |
|
|
set_cursor(vc);
|
| 4003 |
|
|
}
|
| 4004 |
|
|
|
| 4005 |
|
|
u16 vcs_scr_readw(struct vc_data *vc, const u16 *org)
|
| 4006 |
|
|
{
|
| 4007 |
|
|
if ((unsigned long)org == vc->vc_pos && softcursor_original != -1)
|
| 4008 |
|
|
return softcursor_original;
|
| 4009 |
|
|
return scr_readw(org);
|
| 4010 |
|
|
}
|
| 4011 |
|
|
|
| 4012 |
|
|
void vcs_scr_writew(struct vc_data *vc, u16 val, u16 *org)
|
| 4013 |
|
|
{
|
| 4014 |
|
|
scr_writew(val, org);
|
| 4015 |
|
|
if ((unsigned long)org == vc->vc_pos) {
|
| 4016 |
|
|
softcursor_original = -1;
|
| 4017 |
|
|
add_softcursor(vc);
|
| 4018 |
|
|
}
|
| 4019 |
|
|
}
|
| 4020 |
|
|
|
| 4021 |
|
|
/*
|
| 4022 |
|
|
* Visible symbols for modules
|
| 4023 |
|
|
*/
|
| 4024 |
|
|
|
| 4025 |
|
|
EXPORT_SYMBOL(color_table);
|
| 4026 |
|
|
EXPORT_SYMBOL(default_red);
|
| 4027 |
|
|
EXPORT_SYMBOL(default_grn);
|
| 4028 |
|
|
EXPORT_SYMBOL(default_blu);
|
| 4029 |
|
|
EXPORT_SYMBOL(update_region);
|
| 4030 |
|
|
EXPORT_SYMBOL(redraw_screen);
|
| 4031 |
|
|
EXPORT_SYMBOL(vc_resize);
|
| 4032 |
|
|
EXPORT_SYMBOL(vc_lock_resize);
|
| 4033 |
|
|
EXPORT_SYMBOL(fg_console);
|
| 4034 |
|
|
EXPORT_SYMBOL(console_blank_hook);
|
| 4035 |
|
|
EXPORT_SYMBOL(console_blanked);
|
| 4036 |
|
|
EXPORT_SYMBOL(vc_cons);
|
| 4037 |
|
|
#ifndef VT_SINGLE_DRIVER
|
| 4038 |
|
|
EXPORT_SYMBOL(take_over_console);
|
| 4039 |
|
|
EXPORT_SYMBOL(give_up_console);
|
| 4040 |
|
|
#endif
|
