Modify the suspend_action state in response to a userspace message. This
variable is an unsigned long treated as bitflags tell us whether to reboot
instead of powering down, pause between step, log everything and so on.
Signed-off-by: Nigel Cunningham <[email protected]>
kernel/power/ui.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/kernel/power/ui.c b/kernel/power/ui.c
index 1ef8957..b952bf7 100644
--- a/kernel/power/ui.c
+++ b/kernel/power/ui.c
@@ -67,3 +67,19 @@ static int progress_granularity = 30;
DECLARE_WAIT_QUEUE_HEAD(userui_wait_for_key);
+static void ui_nl_set_state(int n)
+{
+ /* Only let them change certain settings */
+ static const int suspend_action_mask =
+ (1 << SUSPEND_REBOOT) | (1 << SUSPEND_PAUSE) | (1 << SUSPEND_SLOW) |
+ (1 << SUSPEND_LOGALL) | (1 << SUSPEND_SINGLESTEP) |
+ (1 << SUSPEND_PAUSE_NEAR_PAGESET_END);
+
+ suspend_action = (suspend_action & (~suspend_action_mask)) |
+ (n & suspend_action_mask);
+
+ if (!test_action_state(SUSPEND_PAUSE) &&
+ !test_action_state(SUSPEND_SINGLESTEP))
+ wake_up_interruptible(&userui_wait_for_key);
+}
+
--
Nigel Cunningham nigel at suspend2 dot net
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