Commit 5289475d authored by Alan Cox's avatar Alan Cox Committed by Greg Kroah-Hartman
Browse files

vt: tackle the main part of the selection logic 



We leave the existing paste mess alone and just fix up the vt side of
things.

Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 99cceb4e

drivers/tty/vt/selection.c

+31 −8
Original line number Diff line number Diff line
@@ -62,10 +62,14 @@ sel_pos(int n) 
				use_unicode);

}



/* remove the current selection highlight, if any,

   from the console holding the selection. */

void

clear_selection(void) {

/**

 *	clear_selection		-	remove current selection

 *

 *	Remove the current selection highlight, if any from the console

 *	holding the selection. The caller must hold the console lock.

 */

void clear_selection(void)

{

	highlight_pointer(-1); /* hide the pointer */

	if (sel_start != -1) {

		highlight(sel_start, sel_end);
@@ -75,7 +79,7 @@ clear_selection(void) { 


/*

 * User settable table: what characters are to be considered alphabetic?

 * 256 bits. FIXME: Needs a locking model.

 * 256 bits. Locked by the console lock.

 */

static u32 inwordLut[8]={

  0x00000000, /* control chars     */
@@ -92,10 +96,20 @@ static inline int inword(const u16 c) { 
	return c > 0xff || (( inwordLut[c>>5] >> (c & 0x1F) ) & 1);

}



/* set inwordLut contents. Invoked by ioctl(). */

/**

 *	set loadlut		-	load the LUT table

 *	@p: user table

 *

 *	Load the LUT table from user space. The caller must hold the console

 *	lock. Make a temporary copy so a partial update doesn't make a mess.

 */

int sel_loadlut(char __user *p)

{

	return copy_from_user(inwordLut, (u32 __user *)(p+4), 32) ? -EFAULT : 0;

	u32 tmplut[8];

	if (copy_from_user(tmplut, (u32 __user *)(p+4), 32))

		return -EFAULT;

	memcpy(inwordLut, tmplut, 32);

	return 0;

}



/* does screen address p correspond to character at LH/RH edge of screen? */
@@ -131,7 +145,16 @@ static int store_utf8(u16 c, char *p) 
    	}

}



/* set the current selection. Invoked by ioctl() or by kernel code. */

/**

 *	set_selection		- 	set the current selection.

 *	@sel: user selection info

 *	@tty: the console tty

 *

 *	Invoked by the ioctl handle for the vt layer.

 *

 *	The entire selection process is managed under the console_lock. It's

 *	 a lot under the lock but its hardly a performance path

 */

int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *tty)

{

	struct vc_data *vc = vc_cons[fg_console].d;

drivers/tty/vt/vt.c

+2 −0
Original line number Diff line number Diff line
@@ -2623,7 +2623,9 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) 
			console_unlock();

			break;

		case TIOCL_SELLOADLUT:

			console_lock();

			ret = sel_loadlut(p);

			console_unlock();

			break;

		case TIOCL_GETSHIFTSTATE: