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vt: selection, introduce vc_is_sel

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Avoid global variables (namely sel_cons) by introducing vc_is_sel. It
checks whether the parameter is the current selection console. This will
help putting sel_cons to a struct later.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200219073951.16151-1-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2020-02-19 08:39:43 +01:00 committed by Greg Kroah-Hartman
parent 80967ff2d1
commit dce05aa6ee
4 changed files with 13 additions and 5 deletions
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5
drivers/tty/vt/selection.c
View File

@ -84,6 +84,11 @@ void clear_selection(void)
}
EXPORT_SYMBOL_GPL(clear_selection);
bool vc_is_sel(struct vc_data *vc)
{
return vc == sel_cons;
}
/*
* User settable table: what characters are to be considered alphabetic?
* 128 bits. Locked by the console lock.

7
drivers/tty/vt/vt.c
View File

@ -890,8 +890,9 @@ static void hide_softcursor(struct vc_data *vc)
static void hide_cursor(struct vc_data *vc)
{
if (vc == sel_cons)
if (vc_is_sel(vc))
clear_selection();
vc->vc_sw->con_cursor(vc, CM_ERASE);
hide_softcursor(vc);
}
@ -901,7 +902,7 @@ static void set_cursor(struct vc_data *vc)
if (!con_is_fg(vc) || console_blanked || vc->vc_mode == KD_GRAPHICS)
return;
if (vc->vc_deccm) {
if (vc == sel_cons)
if (vc_is_sel(vc))
clear_selection();
add_softcursor(vc);
if ((vc->vc_cursor_type & 0x0f) != 1)
@ -1196,7 +1197,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
}
}
if (vc == sel_cons)
if (vc_is_sel(vc))
clear_selection();
old_rows = vc->vc_rows;

2
drivers/tty/vt/vt_ioctl.c
View File

@ -43,7 +43,7 @@ char vt_dont_switch;
extern struct tty_driver *console_driver;
#define VT_IS_IN_USE(i) (console_driver->ttys[i] && console_driver->ttys[i]->count)
#define VT_BUSY(i) (VT_IS_IN_USE(i) || i == fg_console || vc_cons[i].d == sel_cons)
#define VT_BUSY(i) (VT_IS_IN_USE(i) || i == fg_console || vc_is_sel(vc_cons[i].d))
/*
* Console (vt and kd) routines, as defined by USL SVR4 manual, and by

4
include/linux/selection.h
View File

@ -11,8 +11,8 @@
#include <linux/tiocl.h>
#include <linux/vt_buffer.h>
extern struct vc_data *sel_cons;
struct tty_struct;
struct vc_data;
extern void clear_selection(void);
extern int set_selection_user(const struct tiocl_selection __user *sel,
@ -24,6 +24,8 @@ extern int sel_loadlut(char __user *p);
extern int mouse_reporting(void);
extern void mouse_report(struct tty_struct * tty, int butt, int mrx, int mry);
bool vc_is_sel(struct vc_data *vc);
extern int console_blanked;
extern const unsigned char color_table[];