Add a two new ioctls to the apm(4) interface.

APM_IOC_{SUSPEND,STANDBY}_REQ: This is to fix an issue with apm suspend
where a call to zzz suspended the machine immediately, not giving anyone
listening for apm events (other than apmd) a chance to deal with the
upcoming change. This hit X hard since the introduction of drm, since it
needs to have time to idle the 3d engine and otherwise get the device
into a recoverable state. Such things are needed until we support
modesetting in the kernel.

Now, instead of forcing a suspend, using ioctl sends out an event similar
to if you had put the lid down, giving all userland applications a
chance to reply.

tested by sthen@ and beck@, especial thanks to sthen for sitting there
while I tried to debug this remotely, I owe him beer.

Prompted by and ok deraadt@

1 files changed, 9 insertions, 2 deletions

diff --git a/sys/arch/macppc/dev/apm.c b/sys/arch/macppc/dev/apm.c
index 68b594ed9c2..03b23391551 100644
--- a/sys/arch/macppc/dev/apm.c
+++ b/sys/arch/macppc/dev/apm.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: apm.c,v 1.13 2007/12/11 15:44:00 tedu Exp $	*/
+/*	$OpenBSD: apm.c,v 1.14 2009/02/26 17:19:47 oga Exp $	*/
 
 /*-
  * Copyright (c) 2001 Alexander Guy.  All rights reserved.
@@ -286,7 +286,14 @@ apmioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
 				power->battery_state = APM_BATT_LOW;
 		}
 		break;
-
+	case APM_IOC_STANDBY_REQ:
+		if ((flag & FWRITE) == 0)
+			error = EBADF;
+		break;
+	case APM_IOC_SUSPEND_REQ:
+		if ((flag & FWRITE) == 0)
+			error = EBADF;
+		break;
 	default:
 		error = ENOTTY;
 	}