RE: Let init know user wants to shutdown

Grover, Andrew
2001-04-10T17:07:08Z

This is not correct, because we want the power button to be configurable.
The user should be able to redefine the power button's action, perhaps to
only sleep the system. We currently surface button events to acpid, which
then can do the right thing, including a shutdown -h now (which I assume
notifies init).

Regards -- Andy

> From: Pavel Machek [mailto:pavel@suse.cz]
> Init should get to know that user pressed power button (so it can do
> shutdown and poweroff). Plus, it is nice to let user know that we can
> read such event. [I hunted bug for few hours, thinking that kernel
> does not get the event at all].
>
> Here's patch to do that. Please apply,
> Pavel
>
> diff -urb -x .dep* -x .hdep* -x *.[oas] -x *~ -x #* -x *CVS*
> -x *.orig -x *.rej -x *.old -x .menu* -x asm -x local.h -x
> System.map -x autoconf.h -x compile.h -x version.h -x
> .version -x defkeymap.c -x uni_hash.tbl -x zImage -x vmlinu?*
> -x TAGS -x bootsect -x *RCS* -x conmakehash -x map -x build
> -x build -x configure -x *target* -x *.flags -x *.bak
> clean/drivers/acpi/events/evevent.c
> linux/drivers/acpi/events/evevent.c
> --- clean/drivers/acpi/events/evevent.c Sun Apr 1 00:22:57 2001
> +++ linux/drivers/acpi/events/evevent.c Wed Apr 4 01:08:11 2001
> @@ -30,6 +30,8 @@
> #include "acnamesp.h"
> #include "accommon.h"
>
> +#include <linux/signal.h>
> +
> #define _COMPONENT EVENT_HANDLING
> MODULE_NAME ("evevent")
>
> @@ -197,14 +172,18 @@
> if ((status_register & ACPI_STATUS_POWER_BUTTON) &&
> (enable_register & ACPI_ENABLE_POWER_BUTTON))
> {
> + printk ("acpi: Power button pressed!\n");
> + kill_proc (1, SIGTERM, 1);
> int_status |= acpi_ev_fixed_event_dispatch
> (ACPI_EVENT_POWER_BUTTON);
> }
>
> +
> /* sleep button event */
>
> if ((status_register & ACPI_STATUS_SLEEP_BUTTON) &&
> (enable_register & ACPI_ENABLE_SLEEP_BUTTON))
> {
> + printk("acpi: Sleep button pressed!\n");
> int_status |= acpi_ev_fixed_event_dispatch
> (ACPI_EVENT_SLEEP_BUTTON);
> }
>
>
> --
> I'm pavel@ucw.cz. "In my country we have almost anarchy and I
> don't care."
> Panos Katsaloulis describing me w.r.t. patents at
> discuss@linmodems.org
>