5bcdf67642
Move grub_getkeystatushelper() function from grub-core/commands/keystatus.c to grub-core/kern/term.c and export it so that it can be used outside of the keystatus command code too. There's no logic change in this patch. The function definition is moved so it can be called from grub-core/kern/term.c in a subsequent patch. It will be used to determine if a SHIFT key has was held down and use that also to interrupt the countdown, without the need to press a key at the right time. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* keystatus.c - Command to check key modifier status. */
|
||
/*
|
||
* GRUB -- GRand Unified Bootloader
|
||
* Copyright (C) 2009 Free Software Foundation, Inc.
|
||
*
|
||
* GRUB is free software: you can redistribute it and/or modify
|
||
* it under the terms of the GNU General Public License as published by
|
||
* the Free Software Foundation, either version 3 of the License, or
|
||
* (at your option) any later version.
|
||
*
|
||
* GRUB is distributed in the hope that it will be useful,
|
||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
* GNU General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU General Public License
|
||
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
#include <grub/dl.h>
|
||
#include <grub/misc.h>
|
||
#include <grub/extcmd.h>
|
||
#include <grub/term.h>
|
||
#include <grub/i18n.h>
|
||
|
||
GRUB_MOD_LICENSE ("GPLv3+");
|
||
|
||
static const struct grub_arg_option options[] =
|
||
{
|
||
/* TRANSLATORS: "Check" in a sense that if this key is pressed then
|
||
"true" is returned, otherwise "false". */
|
||
{"shift", 's', 0, N_("Check Shift key."), 0, 0},
|
||
{"ctrl", 'c', 0, N_("Check Control key."), 0, 0},
|
||
{"alt", 'a', 0, N_("Check Alt key."), 0, 0},
|
||
{0, 0, 0, 0, 0, 0}
|
||
};
|
||
|
||
static grub_err_t
|
||
grub_cmd_keystatus (grub_extcmd_context_t ctxt,
|
||
int argc __attribute__ ((unused)),
|
||
char **args __attribute__ ((unused)))
|
||
{
|
||
struct grub_arg_list *state = ctxt->state;
|
||
int expect_mods = 0;
|
||
int mods;
|
||
|
||
if (state[0].set)
|
||
expect_mods |= (GRUB_TERM_STATUS_LSHIFT | GRUB_TERM_STATUS_RSHIFT);
|
||
if (state[1].set)
|
||
expect_mods |= (GRUB_TERM_STATUS_LCTRL | GRUB_TERM_STATUS_RCTRL);
|
||
if (state[2].set)
|
||
expect_mods |= (GRUB_TERM_STATUS_LALT | GRUB_TERM_STATUS_RALT);
|
||
|
||
grub_dprintf ("keystatus", "expect_mods: %d\n", expect_mods);
|
||
|
||
/* Without arguments, just check whether getkeystatus is supported at
|
||
all. */
|
||
if (expect_mods == 0)
|
||
{
|
||
grub_term_input_t term;
|
||
int nterms = 0;
|
||
|
||
FOR_ACTIVE_TERM_INPUTS (term)
|
||
if (!term->getkeystatus)
|
||
return grub_error (GRUB_ERR_TEST_FAILURE, N_("false"));
|
||
else
|
||
nterms++;
|
||
if (!nterms)
|
||
return grub_error (GRUB_ERR_TEST_FAILURE, N_("false"));
|
||
return 0;
|
||
}
|
||
|
||
mods = grub_getkeystatus ();
|
||
grub_dprintf ("keystatus", "mods: %d\n", mods);
|
||
if (mods >= 0 && (mods & expect_mods) != 0)
|
||
return 0;
|
||
else
|
||
return grub_error (GRUB_ERR_TEST_FAILURE, N_("false"));
|
||
}
|
||
|
||
static grub_extcmd_t cmd;
|
||
|
||
GRUB_MOD_INIT(keystatus)
|
||
{
|
||
cmd = grub_register_extcmd ("keystatus", grub_cmd_keystatus, 0,
|
||
"[--shift] [--ctrl] [--alt]",
|
||
/* TRANSLATORS: there are 3 modifiers. */
|
||
N_("Check key modifier status."),
|
||
options);
|
||
}
|
||
|
||
GRUB_MOD_FINI(keystatus)
|
||
{
|
||
grub_unregister_extcmd (cmd);
|
||
}
|