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path: root/drivers/tty/vt/vt.c
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Diffstat (limited to 'drivers/tty/vt/vt.c')
-rw-r--r--drivers/tty/vt/vt.c1531
1 files changed, 831 insertions, 700 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 38a765eadbe2..9b5b98dfc8b4 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -145,7 +145,7 @@ static void gotoxy(struct vc_data *vc, int new_x, int new_y);
static void save_cur(struct vc_data *vc);
static void reset_terminal(struct vc_data *vc, int do_clear);
static void con_flush_chars(struct tty_struct *tty);
-static int set_vesa_blanking(char __user *p);
+static int set_vesa_blanking(u8 __user *mode);
static void set_cursor(struct vc_data *vc);
static void hide_cursor(struct vc_data *vc);
static void console_callback(struct work_struct *ignored);
@@ -175,7 +175,7 @@ int do_poke_blanked_console;
int console_blanked;
EXPORT_SYMBOL(console_blanked);
-static int vesa_blank_mode; /* 0:none 1:suspendV 2:suspendH 3:powerdown */
+static enum vesa_blank_mode vesa_blank_mode;
static int vesa_off_interval;
static int blankinterval;
core_param(consoleblank, blankinterval, int, 0444);
@@ -286,18 +286,20 @@ static inline bool con_should_update(const struct vc_data *vc)
return con_is_visible(vc) && !console_blanked;
}
-static inline unsigned short *screenpos(const struct vc_data *vc, int offset,
- bool viewed)
+static inline u16 *screenpos(const struct vc_data *vc, unsigned int offset,
+ bool viewed)
{
- unsigned short *p;
-
- if (!viewed)
- p = (unsigned short *)(vc->vc_origin + offset);
- else if (!vc->vc_sw->con_screen_pos)
- p = (unsigned short *)(vc->vc_visible_origin + offset);
+ unsigned long origin = viewed ? vc->vc_visible_origin : vc->vc_origin;
+
+ return (u16 *)(origin + offset);
+}
+
+static void con_putc(struct vc_data *vc, u16 ca, unsigned int y, unsigned int x)
+{
+ if (vc->vc_sw->con_putc)
+ vc->vc_sw->con_putc(vc, ca, y, x);
else
- p = vc->vc_sw->con_screen_pos(vc, offset);
- return p;
+ vc->vc_sw->con_putcs(vc, &ca, 1, y, x);
}
/* Called from the keyboard irq path.. */
@@ -591,18 +593,12 @@ static void con_scroll(struct vc_data *vc, unsigned int top,
static void do_update_region(struct vc_data *vc, unsigned long start, int count)
{
unsigned int xx, yy, offset;
- u16 *p;
+ u16 *p = (u16 *)start;
+
+ offset = (start - vc->vc_origin) / 2;
+ xx = offset % vc->vc_cols;
+ yy = offset / vc->vc_cols;
- p = (u16 *) start;
- if (!vc->vc_sw->con_getxy) {
- offset = (start - vc->vc_origin) / 2;
- xx = offset % vc->vc_cols;
- yy = offset / vc->vc_cols;
- } else {
- int nxx, nyy;
- start = vc->vc_sw->con_getxy(vc, start, &nxx, &nyy);
- xx = nxx; yy = nyy;
- }
for(;;) {
u16 attrib = scr_readw(p) & 0xff00;
int startx = xx;
@@ -625,10 +621,6 @@ static void do_update_region(struct vc_data *vc, unsigned long start, int count)
break;
xx = 0;
yy++;
- if (vc->vc_sw->con_getxy) {
- p = (u16 *)start;
- start = vc->vc_sw->con_getxy(vc, start, NULL, NULL);
- }
}
}
@@ -703,7 +695,7 @@ static void update_attr(struct vc_data *vc)
/* Note: inverting the screen twice should revert to the original state */
void invert_screen(struct vc_data *vc, int offset, int count, bool viewed)
{
- unsigned short *p;
+ u16 *p;
WARN_CONSOLE_UNLOCKED();
@@ -762,7 +754,7 @@ void complement_pos(struct vc_data *vc, int offset)
old_offset < vc->vc_screenbuf_size) {
scr_writew(old, screenpos(vc, old_offset, true));
if (con_should_update(vc))
- vc->vc_sw->con_putc(vc, old, oldy, oldx);
+ con_putc(vc, old, oldy, oldx);
notify_update(vc);
}
@@ -771,15 +763,14 @@ void complement_pos(struct vc_data *vc, int offset)
if (offset != -1 && offset >= 0 &&
offset < vc->vc_screenbuf_size) {
unsigned short new;
- unsigned short *p;
- p = screenpos(vc, offset, true);
+ u16 *p = screenpos(vc, offset, true);
old = scr_readw(p);
new = old ^ vc->vc_complement_mask;
scr_writew(new, p);
if (con_should_update(vc)) {
oldx = (offset >> 1) % vc->vc_cols;
oldy = (offset >> 1) / vc->vc_cols;
- vc->vc_sw->con_putc(vc, new, oldy, oldx);
+ con_putc(vc, new, oldy, oldx);
}
notify_update(vc);
}
@@ -833,7 +824,7 @@ static void add_softcursor(struct vc_data *vc)
i ^= CUR_FG;
scr_writew(i, (u16 *)vc->vc_pos);
if (con_should_update(vc))
- vc->vc_sw->con_putc(vc, i, vc->state.y, vc->state.x);
+ con_putc(vc, i, vc->state.y, vc->state.x);
}
static void hide_softcursor(struct vc_data *vc)
@@ -841,8 +832,8 @@ static void hide_softcursor(struct vc_data *vc)
if (softcursor_original != -1) {
scr_writew(softcursor_original, (u16 *)vc->vc_pos);
if (con_should_update(vc))
- vc->vc_sw->con_putc(vc, softcursor_original,
- vc->state.y, vc->state.x);
+ con_putc(vc, softcursor_original, vc->state.y,
+ vc->state.x);
softcursor_original = -1;
}
}
@@ -852,7 +843,7 @@ static void hide_cursor(struct vc_data *vc)
if (vc_is_sel(vc))
clear_selection();
- vc->vc_sw->con_cursor(vc, CM_ERASE);
+ vc->vc_sw->con_cursor(vc, false);
hide_softcursor(vc);
}
@@ -865,7 +856,7 @@ static void set_cursor(struct vc_data *vc)
clear_selection();
add_softcursor(vc);
if (CUR_SIZE(vc->vc_cursor_type) != CUR_NONE)
- vc->vc_sw->con_cursor(vc, CM_DRAW);
+ vc->vc_sw->con_cursor(vc, true);
} else
hide_cursor(vc);
}
@@ -897,21 +888,18 @@ static void flush_scrollback(struct vc_data *vc)
WARN_CONSOLE_UNLOCKED();
set_origin(vc);
- if (vc->vc_sw->con_flush_scrollback) {
- vc->vc_sw->con_flush_scrollback(vc);
- } else if (con_is_visible(vc)) {
- /*
- * When no con_flush_scrollback method is provided then the
- * legacy way for flushing the scrollback buffer is to use
- * a side effect of the con_switch method. We do it only on
- * the foreground console as background consoles have no
- * scrollback buffers in that case and we obviously don't
- * want to switch to them.
- */
- hide_cursor(vc);
- vc->vc_sw->con_switch(vc);
- set_cursor(vc);
- }
+ if (!con_is_visible(vc))
+ return;
+
+ /*
+ * The legacy way for flushing the scrollback buffer is to use a side
+ * effect of the con_switch method. We do it only on the foreground
+ * console as background consoles have no scrollback buffers in that
+ * case and we obviously don't want to switch to them.
+ */
+ hide_cursor(vc);
+ vc->vc_sw->con_switch(vc);
+ set_cursor(vc);
}
/*
@@ -962,7 +950,7 @@ void redraw_screen(struct vc_data *vc, int is_switch)
}
if (redraw) {
- int update;
+ bool update;
int old_was_color = vc->vc_can_do_color;
set_origin(vc);
@@ -999,7 +987,7 @@ int vc_cons_allocated(unsigned int i)
return (i < MAX_NR_CONSOLES && vc_cons[i].d);
}
-static void visual_init(struct vc_data *vc, int num, int init)
+static void visual_init(struct vc_data *vc, int num, bool init)
{
/* ++Geert: vc->vc_sw->con_init determines console size */
if (vc->vc_sw)
@@ -1083,7 +1071,7 @@ int vc_allocate(unsigned int currcons) /* return 0 on success */
vc->port.ops = &vc_port_ops;
INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
- visual_init(vc, currcons, 1);
+ visual_init(vc, currcons, true);
if (!*vc->uni_pagedict_loc)
con_set_default_unimap(vc);
@@ -1115,51 +1103,44 @@ err_free:
}
static inline int resize_screen(struct vc_data *vc, int width, int height,
- int user)
+ bool from_user)
{
/* Resizes the resolution of the display adapater */
int err = 0;
if (vc->vc_sw->con_resize)
- err = vc->vc_sw->con_resize(vc, width, height, user);
+ err = vc->vc_sw->con_resize(vc, width, height, from_user);
return err;
}
/**
- * vc_do_resize - resizing method for the tty
- * @tty: tty being resized
- * @vc: virtual console private data
- * @cols: columns
- * @lines: lines
+ * vc_do_resize - resizing method for the tty
+ * @tty: tty being resized
+ * @vc: virtual console private data
+ * @cols: columns
+ * @lines: lines
+ * @from_user: invoked by a user?
*
- * Resize a virtual console, clipping according to the actual constraints.
- * If the caller passes a tty structure then update the termios winsize
- * information and perform any necessary signal handling.
+ * Resize a virtual console, clipping according to the actual constraints. If
+ * the caller passes a tty structure then update the termios winsize
+ * information and perform any necessary signal handling.
*
- * Caller must hold the console semaphore. Takes the termios rwsem and
- * ctrl.lock of the tty IFF a tty is passed.
+ * Locking: Caller must hold the console semaphore. Takes the termios rwsem and
+ * ctrl.lock of the tty IFF a tty is passed.
*/
-
static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
- unsigned int cols, unsigned int lines)
+ unsigned int cols, unsigned int lines, bool from_user)
{
unsigned long old_origin, new_origin, new_scr_end, rlth, rrem, err = 0;
unsigned long end;
unsigned int old_rows, old_row_size, first_copied_row;
unsigned int new_cols, new_rows, new_row_size, new_screen_size;
- unsigned int user;
unsigned short *oldscreen, *newscreen;
u32 **new_uniscr = NULL;
WARN_CONSOLE_UNLOCKED();
- if (!vc)
- return -ENXIO;
-
- user = vc->vc_resize_user;
- vc->vc_resize_user = 0;
-
if (cols > VC_MAXCOL || lines > VC_MAXROW)
return -EINVAL;
@@ -1185,7 +1166,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
* to deal with possible errors from the code below, we call
* the resize_screen here as well.
*/
- return resize_screen(vc, new_cols, new_rows, user);
+ return resize_screen(vc, new_cols, new_rows, from_user);
}
if (new_screen_size > KMALLOC_MAX_SIZE || !new_screen_size)
@@ -1208,7 +1189,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
old_rows = vc->vc_rows;
old_row_size = vc->vc_size_row;
- err = resize_screen(vc, new_cols, new_rows, user);
+ err = resize_screen(vc, new_cols, new_rows, from_user);
if (err) {
kfree(newscreen);
vc_uniscr_free(new_uniscr);
@@ -1295,34 +1276,35 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
}
/**
- * vc_resize - resize a VT
- * @vc: virtual console
- * @cols: columns
- * @rows: rows
+ * __vc_resize - resize a VT
+ * @vc: virtual console
+ * @cols: columns
+ * @rows: rows
+ * @from_user: invoked by a user?
+ *
+ * Resize a virtual console as seen from the console end of things. We use the
+ * common vc_do_resize() method to update the structures.
*
- * Resize a virtual console as seen from the console end of things. We
- * use the common vc_do_resize methods to update the structures. The
- * caller must hold the console sem to protect console internals and
- * vc->port.tty
+ * Locking: The caller must hold the console sem to protect console internals
+ * and @vc->port.tty.
*/
-
-int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows)
+int __vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows,
+ bool from_user)
{
- return vc_do_resize(vc->port.tty, vc, cols, rows);
+ return vc_do_resize(vc->port.tty, vc, cols, rows, from_user);
}
-EXPORT_SYMBOL(vc_resize);
+EXPORT_SYMBOL(__vc_resize);
/**
- * vt_resize - resize a VT
- * @tty: tty to resize
- * @ws: winsize attributes
+ * vt_resize - resize a VT
+ * @tty: tty to resize
+ * @ws: winsize attributes
*
- * Resize a virtual terminal. This is called by the tty layer as we
- * register our own handler for resizing. The mutual helper does all
- * the actual work.
+ * Resize a virtual terminal. This is called by the tty layer as we register
+ * our own handler for resizing. The mutual helper does all the actual work.
*
- * Takes the console sem and the called methods then take the tty
- * termios_rwsem and the tty ctrl.lock in that order.
+ * Locking: Takes the console sem and the called methods then take the tty
+ * termios_rwsem and the tty ctrl.lock in that order.
*/
static int vt_resize(struct tty_struct *tty, struct winsize *ws)
{
@@ -1330,7 +1312,7 @@ static int vt_resize(struct tty_struct *tty, struct winsize *ws)
int ret;
console_lock();
- ret = vc_do_resize(tty, vc, ws->ws_col, ws->ws_row);
+ ret = vc_do_resize(tty, vc, ws->ws_col, ws->ws_row, false);
console_unlock();
return ret;
}
@@ -1503,36 +1485,43 @@ static inline void del(struct vc_data *vc)
/* ignored */
}
-static void csi_J(struct vc_data *vc, int vpar)
+enum CSI_J {
+ CSI_J_CURSOR_TO_END = 0,
+ CSI_J_START_TO_CURSOR = 1,
+ CSI_J_VISIBLE = 2,
+ CSI_J_FULL = 3,
+};
+
+static void csi_J(struct vc_data *vc, enum CSI_J vpar)
{
+ unsigned short *start;
unsigned int count;
- unsigned short * start;
switch (vpar) {
- case 0: /* erase from cursor to end of display */
- vc_uniscr_clear_line(vc, vc->state.x,
- vc->vc_cols - vc->state.x);
- vc_uniscr_clear_lines(vc, vc->state.y + 1,
- vc->vc_rows - vc->state.y - 1);
- count = (vc->vc_scr_end - vc->vc_pos) >> 1;
- start = (unsigned short *)vc->vc_pos;
- break;
- case 1: /* erase from start to cursor */
- vc_uniscr_clear_line(vc, 0, vc->state.x + 1);
- vc_uniscr_clear_lines(vc, 0, vc->state.y);
- count = ((vc->vc_pos - vc->vc_origin) >> 1) + 1;
- start = (unsigned short *)vc->vc_origin;
- break;
- case 3: /* include scrollback */
- flush_scrollback(vc);
- fallthrough;
- case 2: /* erase whole display */
- vc_uniscr_clear_lines(vc, 0, vc->vc_rows);
- count = vc->vc_cols * vc->vc_rows;
- start = (unsigned short *)vc->vc_origin;
- break;
- default:
- return;
+ case CSI_J_CURSOR_TO_END:
+ vc_uniscr_clear_line(vc, vc->state.x,
+ vc->vc_cols - vc->state.x);
+ vc_uniscr_clear_lines(vc, vc->state.y + 1,
+ vc->vc_rows - vc->state.y - 1);
+ count = (vc->vc_scr_end - vc->vc_pos) >> 1;
+ start = (unsigned short *)vc->vc_pos;
+ break;
+ case CSI_J_START_TO_CURSOR:
+ vc_uniscr_clear_line(vc, 0, vc->state.x + 1);
+ vc_uniscr_clear_lines(vc, 0, vc->state.y);
+ count = ((vc->vc_pos - vc->vc_origin) >> 1) + 1;
+ start = (unsigned short *)vc->vc_origin;
+ break;
+ case CSI_J_FULL:
+ flush_scrollback(vc);
+ fallthrough;
+ case CSI_J_VISIBLE:
+ vc_uniscr_clear_lines(vc, 0, vc->vc_rows);
+ count = vc->vc_cols * vc->vc_rows;
+ start = (unsigned short *)vc->vc_origin;
+ break;
+ default:
+ return;
}
scr_memsetw(start, vc->vc_video_erase_char, 2 * count);
if (con_should_update(vc))
@@ -1540,27 +1529,33 @@ static void csi_J(struct vc_data *vc, int vpar)
vc->vc_need_wrap = 0;
}
-static void csi_K(struct vc_data *vc, int vpar)
+enum {
+ CSI_K_CURSOR_TO_LINEEND = 0,
+ CSI_K_LINESTART_TO_CURSOR = 1,
+ CSI_K_LINE = 2,
+};
+
+static void csi_K(struct vc_data *vc)
{
unsigned int count;
unsigned short *start = (unsigned short *)vc->vc_pos;
int offset;
- switch (vpar) {
- case 0: /* erase from cursor to end of line */
- offset = 0;
- count = vc->vc_cols - vc->state.x;
- break;
- case 1: /* erase from start of line to cursor */
- offset = -vc->state.x;
- count = vc->state.x + 1;
- break;
- case 2: /* erase whole line */
- offset = -vc->state.x;
- count = vc->vc_cols;
- break;
- default:
- return;
+ switch (vc->vc_par[0]) {
+ case CSI_K_CURSOR_TO_LINEEND:
+ offset = 0;
+ count = vc->vc_cols - vc->state.x;
+ break;
+ case CSI_K_LINESTART_TO_CURSOR:
+ offset = -vc->state.x;
+ count = vc->state.x + 1;
+ break;
+ case CSI_K_LINE:
+ offset = -vc->state.x;
+ count = vc->vc_cols;
+ break;
+ default:
+ return;
}
vc_uniscr_clear_line(vc, vc->state.x + offset, count);
scr_memsetw(start + offset, vc->vc_video_erase_char, 2 * count);
@@ -1569,20 +1564,15 @@ static void csi_K(struct vc_data *vc, int vpar)
do_update_region(vc, (unsigned long)(start + offset), count);
}
-/* erase the following vpar positions */
-static void csi_X(struct vc_data *vc, unsigned int vpar)
+/* erase the following count positions */
+static void csi_X(struct vc_data *vc)
{ /* not vt100? */
- unsigned int count;
-
- if (!vpar)
- vpar++;
-
- count = min(vpar, vc->vc_cols - vc->state.x);
+ unsigned int count = clamp(vc->vc_par[0], 1, vc->vc_cols - vc->state.x);
vc_uniscr_clear_line(vc, vc->state.x, count);
scr_memsetw((unsigned short *)vc->vc_pos, vc->vc_video_erase_char, 2 * count);
if (con_should_update(vc))
- vc->vc_sw->con_clear(vc, vc->state.y, vc->state.x, 1, count);
+ vc->vc_sw->con_clear(vc, vc->state.y, vc->state.x, count);
vc->vc_need_wrap = 0;
}
@@ -1598,7 +1588,7 @@ static void default_attr(struct vc_data *vc)
struct rgb { u8 r; u8 g; u8 b; };
-static void rgb_from_256(int i, struct rgb *c)
+static void rgb_from_256(unsigned int i, struct rgb *c)
{
if (i < 8) { /* Standard colours. */
c->r = i&1 ? 0xaa : 0x00;
@@ -1609,9 +1599,12 @@ static void rgb_from_256(int i, struct rgb *c)
c->g = i&2 ? 0xff : 0x55;
c->b = i&4 ? 0xff : 0x55;
} else if (i < 232) { /* 6x6x6 colour cube. */
- c->r = (i - 16) / 36 * 85 / 2;
- c->g = (i - 16) / 6 % 6 * 85 / 2;
- c->b = (i - 16) % 6 * 85 / 2;
+ i -= 16;
+ c->b = i % 6 * 255 / 6;
+ i /= 6;
+ c->g = i % 6 * 255 / 6;
+ i /= 6;
+ c->r = i * 255 / 6;
} else /* Grayscale ramp. */
c->r = c->g = c->b = i * 10 - 2312;
}
@@ -1681,6 +1674,39 @@ static int vc_t416_color(struct vc_data *vc, int i,
return i;
}
+enum {
+ CSI_m_DEFAULT = 0,
+ CSI_m_BOLD = 1,
+ CSI_m_HALF_BRIGHT = 2,
+ CSI_m_ITALIC = 3,
+ CSI_m_UNDERLINE = 4,
+ CSI_m_BLINK = 5,
+ CSI_m_REVERSE = 7,
+ CSI_m_PRI_FONT = 10,
+ CSI_m_ALT_FONT1 = 11,
+ CSI_m_ALT_FONT2 = 12,
+ CSI_m_DOUBLE_UNDERLINE = 21,
+ CSI_m_NORMAL_INTENSITY = 22,
+ CSI_m_NO_ITALIC = 23,
+ CSI_m_NO_UNDERLINE = 24,
+ CSI_m_NO_BLINK = 25,
+ CSI_m_NO_REVERSE = 27,
+ CSI_m_FG_COLOR_BEG = 30,
+ CSI_m_FG_COLOR_END = 37,
+ CSI_m_FG_COLOR = 38,
+ CSI_m_DEFAULT_FG_COLOR = 39,
+ CSI_m_BG_COLOR_BEG = 40,
+ CSI_m_BG_COLOR_END = 47,
+ CSI_m_BG_COLOR = 48,
+ CSI_m_DEFAULT_BG_COLOR = 49,
+ CSI_m_BRIGHT_FG_COLOR_BEG = 90,
+ CSI_m_BRIGHT_FG_COLOR_END = 97,
+ CSI_m_BRIGHT_FG_COLOR_OFF = CSI_m_BRIGHT_FG_COLOR_BEG - CSI_m_FG_COLOR_BEG,
+ CSI_m_BRIGHT_BG_COLOR_BEG = 100,
+ CSI_m_BRIGHT_BG_COLOR_END = 107,
+ CSI_m_BRIGHT_BG_COLOR_OFF = CSI_m_BRIGHT_BG_COLOR_BEG - CSI_m_BG_COLOR_BEG,
+};
+
/* console_lock is held */
static void csi_m(struct vc_data *vc)
{
@@ -1688,33 +1714,33 @@ static void csi_m(struct vc_data *vc)
for (i = 0; i <= vc->vc_npar; i++)
switch (vc->vc_par[i]) {
- case 0: /* all attributes off */
+ case CSI_m_DEFAULT: /* all attributes off */
default_attr(vc);
break;
- case 1:
+ case CSI_m_BOLD:
vc->state.intensity = VCI_BOLD;
break;
- case 2:
+ case CSI_m_HALF_BRIGHT:
vc->state.intensity = VCI_HALF_BRIGHT;
break;
- case 3:
+ case CSI_m_ITALIC:
vc->state.italic = true;
break;
- case 21:
+ case CSI_m_DOUBLE_UNDERLINE:
/*
* No console drivers support double underline, so
* convert it to a single underline.
*/
- case 4:
+ case CSI_m_UNDERLINE:
vc->state.underline = true;
break;
- case 5:
+ case CSI_m_BLINK:
vc->state.blink = true;
break;
- case 7:
+ case CSI_m_REVERSE:
vc->state.reverse = true;
break;
- case 10: /* ANSI X3.64-1979 (SCO-ish?)
+ case CSI_m_PRI_FONT: /* ANSI X3.64-1979 (SCO-ish?)
* Select primary font, don't display control chars if
* defined, don't set bit 8 on output.
*/
@@ -1722,7 +1748,7 @@ static void csi_m(struct vc_data *vc)
vc->vc_disp_ctrl = 0;
vc->vc_toggle_meta = 0;
break;
- case 11: /* ANSI X3.64-1979 (SCO-ish?)
+ case CSI_m_ALT_FONT1: /* ANSI X3.64-1979 (SCO-ish?)
* Select first alternate font, lets chars < 32 be
* displayed as ROM chars.
*/
@@ -1730,7 +1756,7 @@ static void csi_m(struct vc_data *vc)
vc->vc_disp_ctrl = 1;
vc->vc_toggle_meta = 0;
break;
- case 12: /* ANSI X3.64-1979 (SCO-ish?)
+ case CSI_m_ALT_FONT2: /* ANSI X3.64-1979 (SCO-ish?)
* Select second alternate font, toggle high bit
* before displaying as ROM char.
*/
@@ -1738,47 +1764,51 @@ static void csi_m(struct vc_data *vc)
vc->vc_disp_ctrl = 1;
vc->vc_toggle_meta = 1;
break;
- case 22:
+ case CSI_m_NORMAL_INTENSITY:
vc->state.intensity = VCI_NORMAL;
break;
- case 23:
+ case CSI_m_NO_ITALIC:
vc->state.italic = false;
break;
- case 24:
+ case CSI_m_NO_UNDERLINE:
vc->state.underline = false;
break;
- case 25:
+ case CSI_m_NO_BLINK:
vc->state.blink = false;
break;
- case 27:
+ case CSI_m_NO_REVERSE:
vc->state.reverse = false;
break;
- case 38:
+ case CSI_m_FG_COLOR:
i = vc_t416_color(vc, i, rgb_foreground);
break;
- case 48:
+ case CSI_m_BG_COLOR:
i = vc_t416_color(vc, i, rgb_background);
break;
- case 39:
+ case CSI_m_DEFAULT_FG_COLOR:
vc->state.color = (vc->vc_def_color & 0x0f) |
(vc->state.color & 0xf0);
break;
- case 49:
+ case CSI_m_DEFAULT_BG_COLOR:
vc->state.color = (vc->vc_def_color & 0xf0) |
(vc->state.color & 0x0f);
break;
- default:
- if (vc->vc_par[i] >= 90 && vc->vc_par[i] <= 107) {
- if (vc->vc_par[i] < 100)
- vc->state.intensity = VCI_BOLD;
- vc->vc_par[i] -= 60;
- }
- if (vc->vc_par[i] >= 30 && vc->vc_par[i] <= 37)
- vc->state.color = color_table[vc->vc_par[i] - 30]
- | (vc->state.color & 0xf0);
- else if (vc->vc_par[i] >= 40 && vc->vc_par[i] <= 47)
- vc->state.color = (color_table[vc->vc_par[i] - 40] << 4)
- | (vc->state.color & 0x0f);
+ case CSI_m_BRIGHT_FG_COLOR_BEG ... CSI_m_BRIGHT_FG_COLOR_END:
+ vc->state.intensity = VCI_BOLD;
+ vc->vc_par[i] -= CSI_m_BRIGHT_FG_COLOR_OFF;
+ fallthrough;
+ case CSI_m_FG_COLOR_BEG ... CSI_m_FG_COLOR_END:
+ vc->vc_par[i] -= CSI_m_FG_COLOR_BEG;
+ vc->state.color = color_table[vc->vc_par[i]] |
+ (vc->state.color & 0xf0);
+ break;
+ case CSI_m_BRIGHT_BG_COLOR_BEG ... CSI_m_BRIGHT_BG_COLOR_END:
+ vc->vc_par[i] -= CSI_m_BRIGHT_BG_COLOR_OFF;
+ fallthrough;
+ case CSI_m_BG_COLOR_BEG ... CSI_m_BG_COLOR_END:
+ vc->vc_par[i] -= CSI_m_BG_COLOR_BEG;
+ vc->state.color = (color_table[vc->vc_par[i]] << 4) |
+ (vc->state.color & 0x0f);
break;
}
update_attr(vc);
@@ -1832,133 +1862,175 @@ int mouse_reporting(void)
return vc_cons[fg_console].d->vc_report_mouse;
}
+enum {
+ CSI_DEC_hl_CURSOR_KEYS = 1, /* CKM: cursor keys send ^[Ox/^[[x */
+ CSI_DEC_hl_132_COLUMNS = 3, /* COLM: 80/132 mode switch */
+ CSI_DEC_hl_REVERSE_VIDEO = 5, /* SCNM */
+ CSI_DEC_hl_ORIGIN_MODE = 6, /* OM: origin relative/absolute */
+ CSI_DEC_hl_AUTOWRAP = 7, /* AWM */
+ CSI_DEC_hl_AUTOREPEAT = 8, /* ARM */
+ CSI_DEC_hl_MOUSE_X10 = 9,
+ CSI_DEC_hl_SHOW_CURSOR = 25, /* TCEM */
+ CSI_DEC_hl_MOUSE_VT200 = 1000,
+};
+
/* console_lock is held */
-static void set_mode(struct vc_data *vc, int on_off)
+static void csi_DEC_hl(struct vc_data *vc, bool on_off)
{
- int i;
+ unsigned int i;
for (i = 0; i <= vc->vc_npar; i++)
- if (vc->vc_priv == EPdec) {
- switch(vc->vc_par[i]) { /* DEC private modes set/reset */
- case 1: /* Cursor keys send ^[Ox/^[[x */
- if (on_off)
- set_kbd(vc, decckm);
- else
- clr_kbd(vc, decckm);
- break;
- case 3: /* 80/132 mode switch unimplemented */
+ switch (vc->vc_par[i]) {
+ case CSI_DEC_hl_CURSOR_KEYS:
+ if (on_off)
+ set_kbd(vc, decckm);
+ else
+ clr_kbd(vc, decckm);
+ break;
+ case CSI_DEC_hl_132_COLUMNS: /* unimplemented */
#if 0
- vc_resize(deccolm ? 132 : 80, vc->vc_rows);
- /* this alone does not suffice; some user mode
- utility has to change the hardware regs */
+ vc_resize(deccolm ? 132 : 80, vc->vc_rows);
+ /* this alone does not suffice; some user mode
+ utility has to change the hardware regs */
#endif
- break;
- case 5: /* Inverted screen on/off */
- if (vc->vc_decscnm != on_off) {
- vc->vc_decscnm = on_off;
- invert_screen(vc, 0,
- vc->vc_screenbuf_size,
- false);
- update_attr(vc);
- }
- break;
- case 6: /* Origin relative/absolute */
- vc->vc_decom = on_off;
- gotoxay(vc, 0, 0);
- break;
- case 7: /* Autowrap on/off */
- vc->vc_decawm = on_off;
- break;
- case 8: /* Autorepeat on/off */
- if (on_off)
- set_kbd(vc, decarm);
- else
- clr_kbd(vc, decarm);
- break;
- case 9:
- vc->vc_report_mouse = on_off ? 1 : 0;
- break;
- case 25: /* Cursor on/off */
- vc->vc_deccm = on_off;
- break;
- case 1000:
- vc->vc_report_mouse = on_off ? 2 : 0;
- break;
- }
- } else {
- switch(vc->vc_par[i]) { /* ANSI modes set/reset */
- case 3: /* Monitor (display ctrls) */
- vc->vc_disp_ctrl = on_off;
- break;
- case 4: /* Insert Mode on/off */
- vc->vc_decim = on_off;
- break;
- case 20: /* Lf, Enter == CrLf/Lf */
- if (on_off)
- set_kbd(vc, lnm);
- else
- clr_kbd(vc, lnm);
- break;
+ break;
+ case CSI_DEC_hl_REVERSE_VIDEO:
+ if (vc->vc_decscnm != on_off) {
+ vc->vc_decscnm = on_off;
+ invert_screen(vc, 0, vc->vc_screenbuf_size,
+ false);
+ update_attr(vc);
}
+ break;
+ case CSI_DEC_hl_ORIGIN_MODE:
+ vc->vc_decom = on_off;
+ gotoxay(vc, 0, 0);
+ break;
+ case CSI_DEC_hl_AUTOWRAP:
+ vc->vc_decawm = on_off;
+ break;
+ case CSI_DEC_hl_AUTOREPEAT:
+ if (on_off)
+ set_kbd(vc, decarm);
+ else
+ clr_kbd(vc, decarm);
+ break;
+ case CSI_DEC_hl_MOUSE_X10:
+ vc->vc_report_mouse = on_off ? 1 : 0;
+ break;
+ case CSI_DEC_hl_SHOW_CURSOR:
+ vc->vc_deccm = on_off;
+ break;
+ case CSI_DEC_hl_MOUSE_VT200:
+ vc->vc_report_mouse = on_off ? 2 : 0;
+ break;
}
}
+enum {
+ CSI_hl_DISPLAY_CTRL = 3, /* handle ansi control chars */
+ CSI_hl_INSERT = 4, /* IRM: insert/replace */
+ CSI_hl_AUTO_NL = 20, /* LNM: Enter == CrLf/Lf */
+};
+
/* console_lock is held */
-static void setterm_command(struct vc_data *vc)
+static void csi_hl(struct vc_data *vc, bool on_off)
+{
+ unsigned int i;
+
+ for (i = 0; i <= vc->vc_npar; i++)
+ switch (vc->vc_par[i]) { /* ANSI modes set/reset */
+ case CSI_hl_DISPLAY_CTRL:
+ vc->vc_disp_ctrl = on_off;
+ break;
+ case CSI_hl_INSERT:
+ vc->vc_decim = on_off;
+ break;
+ case CSI_hl_AUTO_NL:
+ if (on_off)
+ set_kbd(vc, lnm);
+ else
+ clr_kbd(vc, lnm);
+ break;
+ }
+}
+
+enum CSI_right_square_bracket {
+ CSI_RSB_COLOR_FOR_UNDERLINE = 1,
+ CSI_RSB_COLOR_FOR_HALF_BRIGHT = 2,
+ CSI_RSB_MAKE_CUR_COLOR_DEFAULT = 8,
+ CSI_RSB_BLANKING_INTERVAL = 9,
+ CSI_RSB_BELL_FREQUENCY = 10,
+ CSI_RSB_BELL_DURATION = 11,
+ CSI_RSB_BRING_CONSOLE_TO_FRONT = 12,
+ CSI_RSB_UNBLANK = 13,
+ CSI_RSB_VESA_OFF_INTERVAL = 14,
+ CSI_RSB_BRING_PREV_CONSOLE_TO_FRONT = 15,
+ CSI_RSB_CURSOR_BLINK_INTERVAL = 16,
+};
+
+/*
+ * csi_RSB - csi+] (Right Square Bracket) handler
+ *
+ * These are linux console private sequences.
+ *
+ * console_lock is held
+ */
+static void csi_RSB(struct vc_data *vc)
{
switch (vc->vc_par[0]) {
- case 1: /* set color for underline mode */
+ case CSI_RSB_COLOR_FOR_UNDERLINE:
if (vc->vc_can_do_color && vc->vc_par[1] < 16) {
vc->vc_ulcolor = color_table[vc->vc_par[1]];
if (vc->state.underline)
update_attr(vc);
}
break;
- case 2: /* set color for half intensity mode */
+ case CSI_RSB_COLOR_FOR_HALF_BRIGHT:
if (vc->vc_can_do_color && vc->vc_par[1] < 16) {
vc->vc_halfcolor = color_table[vc->vc_par[1]];
if (vc->state.intensity == VCI_HALF_BRIGHT)
update_attr(vc);
}
break;
- case 8: /* store colors as defaults */
+ case CSI_RSB_MAKE_CUR_COLOR_DEFAULT:
vc->vc_def_color = vc->vc_attr;
if (vc->vc_hi_font_mask == 0x100)
vc->vc_def_color >>= 1;
default_attr(vc);
update_attr(vc);
break;
- case 9: /* set blanking interval */
+ case CSI_RSB_BLANKING_INTERVAL:
blankinterval = min(vc->vc_par[1], 60U) * 60;
poke_blanked_console();
break;
- case 10: /* set bell frequency in Hz */
+ case CSI_RSB_BELL_FREQUENCY:
if (vc->vc_npar >= 1)
vc->vc_bell_pitch = vc->vc_par[1];
else
vc->vc_bell_pitch = DEFAULT_BELL_PITCH;
break;
- case 11: /* set bell duration in msec */
+ case CSI_RSB_BELL_DURATION:
if (vc->vc_npar >= 1)
vc->vc_bell_duration = (vc->vc_par[1] < 2000) ?
msecs_to_jiffies(vc->vc_par[1]) : 0;
else
vc->vc_bell_duration = DEFAULT_BELL_DURATION;
break;
- case 12: /* bring specified console to the front */
+ case CSI_RSB_BRING_CONSOLE_TO_FRONT:
if (vc->vc_par[1] >= 1 && vc_cons_allocated(vc->vc_par[1] - 1))
set_console(vc->vc_par[1] - 1);
break;
- case 13: /* unblank the screen */
+ case CSI_RSB_UNBLANK:
poke_blanked_console();
break;
- case 14: /* set vesa powerdown interval */
+ case CSI_RSB_VESA_OFF_INTERVAL:
vesa_off_interval = min(vc->vc_par[1], 60U) * 60 * HZ;
break;
- case 15: /* activate the previous console */
+ case CSI_RSB_BRING_PREV_CONSOLE_TO_FRONT:
set_console(last_console);
break;
- case 16: /* set cursor blink duration in msec */
+ case CSI_RSB_CURSOR_BLINK_INTERVAL:
if (vc->vc_npar >= 1 && vc->vc_par[1] >= 50 &&
vc->vc_par[1] <= USHRT_MAX)
vc->vc_cur_blink_ms = vc->vc_par[1];
@@ -1971,41 +2043,32 @@ static void setterm_command(struct vc_data *vc)
/* console_lock is held */
static void csi_at(struct vc_data *vc, unsigned int nr)
{
- if (nr > vc->vc_cols - vc->state.x)
- nr = vc->vc_cols - vc->state.x;
- else if (!nr)
- nr = 1;
+ nr = clamp(nr, 1, vc->vc_cols - vc->state.x);
insert_char(vc, nr);
}
/* console_lock is held */
-static void csi_L(struct vc_data *vc, unsigned int nr)
+static void csi_L(struct vc_data *vc)
{
- if (nr > vc->vc_rows - vc->state.y)
- nr = vc->vc_rows - vc->state.y;
- else if (!nr)
- nr = 1;
+ unsigned int nr = clamp(vc->vc_par[0], 1, vc->vc_rows - vc->state.y);
+
con_scroll(vc, vc->state.y, vc->vc_bottom, SM_DOWN, nr);
vc->vc_need_wrap = 0;
}
/* console_lock is held */
-static void csi_P(struct vc_data *vc, unsigned int nr)
+static void csi_P(struct vc_data *vc)
{
- if (nr > vc->vc_cols - vc->state.x)
- nr = vc->vc_cols - vc->state.x;
- else if (!nr)
- nr = 1;
+ unsigned int nr = clamp(vc->vc_par[0], 1, vc->vc_cols - vc->state.x);
+
delete_char(vc, nr);
}
/* console_lock is held */
-static void csi_M(struct vc_data *vc, unsigned int nr)
+static void csi_M(struct vc_data *vc)
{
- if (nr > vc->vc_rows - vc->state.y)
- nr = vc->vc_rows - vc->state.y;
- else if (!nr)
- nr=1;
+ unsigned int nr = clamp(vc->vc_par[0], 1, vc->vc_rows - vc->state.y);
+
con_scroll(vc, vc->state.y, vc->vc_bottom, SM_UP, nr);
vc->vc_need_wrap = 0;
}
@@ -2028,9 +2091,48 @@ static void restore_cur(struct vc_data *vc)
vc->vc_need_wrap = 0;
}
-enum { ESnormal, ESesc, ESsquare, ESgetpars, ESfunckey,
- EShash, ESsetG0, ESsetG1, ESpercent, EScsiignore, ESnonstd,
- ESpalette, ESosc, ESapc, ESpm, ESdcs };
+/**
+ * enum vc_ctl_state - control characters state of a vt
+ *
+ * @ESnormal: initial state, no control characters parsed
+ * @ESesc: ESC parsed
+ * @ESsquare: CSI parsed -- modifiers/parameters/ctrl chars expected
+ * @ESgetpars: CSI parsed -- parameters/ctrl chars expected
+ * @ESfunckey: CSI [ parsed
+ * @EShash: ESC # parsed
+ * @ESsetG0: ESC ( parsed
+ * @ESsetG1: ESC ) parsed
+ * @ESpercent: ESC % parsed
+ * @EScsiignore: CSI [0x20-0x3f] parsed
+ * @ESnonstd: OSC parsed
+ * @ESpalette: OSC P parsed
+ * @ESosc: OSC [0-9] parsed
+ * @ESANSI_first: first state for ignoring ansi control sequences
+ * @ESapc: ESC _ parsed
+ * @ESpm: ESC ^ parsed
+ * @ESdcs: ESC P parsed
+ * @ESANSI_last: last state for ignoring ansi control sequences
+ */
+enum vc_ctl_state {
+ ESnormal,
+ ESesc,
+ ESsquare,
+ ESgetpars,
+ ESfunckey,
+ EShash,
+ ESsetG0,
+ ESsetG1,
+ ESpercent,
+ EScsiignore,
+ ESnonstd,
+ ESpalette,
+ ESosc,
+ ESANSI_first = ESosc,
+ ESapc,
+ ESpm,
+ ESdcs,
+ ESANSI_last = ESdcs,
+};
/* console_lock is held (except via vc_init()) */
static void reset_terminal(struct vc_data *vc, int do_clear)
@@ -2078,10 +2180,10 @@ static void reset_terminal(struct vc_data *vc, int do_clear)
gotoxy(vc, 0, 0);
save_cur(vc);
if (do_clear)
- csi_J(vc, 2);
+ csi_J(vc, CSI_J_VISIBLE);
}
-static void vc_setGx(struct vc_data *vc, unsigned int which, int c)
+static void vc_setGx(struct vc_data *vc, unsigned int which, u8 c)
{
unsigned char *charset = &vc->state.Gx_charset[which];
@@ -2104,36 +2206,54 @@ static void vc_setGx(struct vc_data *vc, unsigned int which, int c)
vc->vc_translate = set_translate(*charset, vc);
}
-/* is this state an ANSI control string? */
-static bool ansi_control_string(unsigned int state)
+static bool ansi_control_string(enum vc_ctl_state state)
{
- if (state == ESosc || state == ESapc || state == ESpm || state == ESdcs)
- return true;
- return false;
+ return state >= ESANSI_first && state <= ESANSI_last;
}
-/* console_lock is held */
-static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
+enum {
+ ASCII_NULL = 0,
+ ASCII_BELL = 7,
+ ASCII_BACKSPACE = 8,
+ ASCII_IGNORE_FIRST = ASCII_BACKSPACE,
+ ASCII_HTAB = 9,
+ ASCII_LINEFEED = 10,
+ ASCII_VTAB = 11,
+ ASCII_FORMFEED = 12,
+ ASCII_CAR_RET = 13,
+ ASCII_IGNORE_LAST = ASCII_CAR_RET,
+ ASCII_SHIFTOUT = 14,
+ ASCII_SHIFTIN = 15,
+ ASCII_CANCEL = 24,
+ ASCII_SUBSTITUTE = 26,
+ ASCII_ESCAPE = 27,
+ ASCII_CSI_IGNORE_FIRST = ' ', /* 0x2x, 0x3a and 0x3c - 0x3f */
+ ASCII_CSI_IGNORE_LAST = '?',
+ ASCII_DEL = 127,
+ ASCII_EXT_CSI = 128 + ASCII_ESCAPE,
+};
+
+/*
+ * Handle ascii characters in control sequences and change states accordingly.
+ * E.g