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vt: selection: allow functions to be called from inside kernel

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This patch breaks set_selection() into two functions so that when
called from kernel, copy_from_user() can be avoided. The two functions
are called set_selection_user() and set_selection_kernel() in order to
be explicit about their purposes. This also means updating any
references to set_selection() and fixing for name change. It also
exports set_selection_kernel() and paste_selection().

These changes are used the following patch where speakup's selection
functionality calls into the above functions, thereby doing away with
parallel implementation.

Signed-off-by: Okash Khawaja <okash.khawaja@gmail.com>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Tested-by: Gregory Nowak <greg@gregn.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Okash Khawaja
2019-04-17 13:21:13 +01:00
committed by Greg Kroah-Hartman
parent 827c085bae
commit 496124e5e1
3 changed files with 38 additions and 22 deletions
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7
include/linux/selection.h
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@@ -11,13 +11,14 @@
#include <linux/tiocl.h>
#include <linux/vt_buffer.h>
struct tty_struct;
extern struct vc_data *sel_cons;
struct tty_struct;
extern void clear_selection(void);
extern int set_selection(const struct tiocl_selection __user *sel, struct tty_struct *tty);
extern int set_selection_user(const struct tiocl_selection __user *sel,
struct tty_struct *tty);
extern int set_selection_kernel(struct tiocl_selection *v,
struct tty_struct *tty);
extern int paste_selection(struct tty_struct *tty);
extern int sel_loadlut(char __user *p);
extern int mouse_reporting(void);