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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
commit6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch)
tree32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /grub-core/commands/sleep.c
parentInitial commit. (diff)
downloadgrub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.tar.xz
grub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.zip
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'grub-core/commands/sleep.c')
-rw-r--r--grub-core/commands/sleep.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/grub-core/commands/sleep.c b/grub-core/commands/sleep.c
new file mode 100644
index 0000000..a1370b7
--- /dev/null
+++ b/grub-core/commands/sleep.c
@@ -0,0 +1,117 @@
+/* sleep.c - Command to wait a specified number of seconds. */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2006,2007,2008 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/term.h>
+#include <grub/time.h>
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/extcmd.h>
+#include <grub/i18n.h>
+
+GRUB_MOD_LICENSE ("GPLv3+");
+
+static const struct grub_arg_option options[] =
+ {
+ {"verbose", 'v', 0, N_("Verbose countdown."), 0, 0},
+ {"interruptible", 'i', 0, N_("Allow to interrupt with ESC."), 0, 0},
+ {0, 0, 0, 0, 0, 0}
+ };
+
+static struct grub_term_coordinate *pos;
+
+static void
+do_print (int n)
+{
+ grub_term_restore_pos (pos);
+ /* NOTE: Do not remove the trailing space characters.
+ They are required to clear the line. */
+ grub_printf ("%d ", n);
+ grub_refresh ();
+}
+
+/* Based on grub_millisleep() from kern/generic/millisleep.c. */
+static int
+grub_interruptible_millisleep (grub_uint32_t ms)
+{
+ grub_uint64_t start;
+
+ start = grub_get_time_ms ();
+
+ while (grub_get_time_ms () - start < ms)
+ if (grub_key_is_interrupt (grub_getkey_noblock ()))
+ return 1;
+
+ return 0;
+}
+
+static grub_err_t
+grub_cmd_sleep (grub_extcmd_context_t ctxt, int argc, char **args)
+{
+ struct grub_arg_list *state = ctxt->state;
+ int n;
+
+ if (argc != 1)
+ return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected"));
+
+ n = grub_strtoul (args[0], 0, 10);
+
+ if (n == 0)
+ {
+ /* Either `0' or broken input. */
+ return 0;
+ }
+
+ grub_refresh ();
+
+ pos = grub_term_save_pos ();
+
+ for (; n; n--)
+ {
+ if (state[0].set)
+ do_print (n);
+
+ if (state[1].set)
+ {
+ if (grub_interruptible_millisleep (1000))
+ return 1;
+ }
+ else
+ grub_millisleep (1000);
+ }
+ if (state[0].set)
+ do_print (0);
+
+ return 0;
+}
+
+static grub_extcmd_t cmd;
+
+GRUB_MOD_INIT(sleep)
+{
+ cmd = grub_register_extcmd ("sleep", grub_cmd_sleep, 0,
+ N_("NUMBER_OF_SECONDS"),
+ N_("Wait for a specified number of seconds."),
+ options);
+}
+
+GRUB_MOD_FINI(sleep)
+{
+ grub_unregister_extcmd (cmd);
+}