Am 2010-08-19 10:19, schrieb Jan de Groot:
On Thu, 2010-08-19 at 00:56 -0400, Dave Reisner wrote:
Couldn't we avoid all this by just flipping a switch in the kernel?
CONFIG_RTC_DRV_CMOS=y
If it's compiled into the kernel, udev picks it up and creates
the /dev
nodes for us.
Which still locks out the people who use a custom kernel with this
driver compiled as module. IMHO the init scripts should work with both
module and built-in.
So why not let udev do the job? Patch below. I modified my initcpio to
get rid of the devtmpfs. A ls -l /dev/rtc* added between the new
/sbin/udevadm settle and the initial clock setting showed /dev/rtc0 and
/dev/rtc -> rtc0. So I think this should work.
I did *not* move the sysinit_udevlaunched hook together with udev start
to avoid insane creation times of dev nodes because this hook is used
for some early udev triggering in fbsplash-extras (AUR).
Patch against bashification-redux:
From 22d410a2566964d58752d443a1312a6eb552660a Mon Sep 17 00:00:00 2001
From: Kurt J. Bosch <kjb-temp-2009@xxxxxxxxxxxxx>
Date: Thu, 19 Aug 2010 16:46:23 +0200
Subject: [PATCH 17/17] Correct rtc dev nodes creation using udev
---
rc.sysinit | 22 +++++++---------------
1 files changed, 7 insertions(+), 15 deletions(-)
diff --git a/rc.sysinit b/rc.sysinit
index 4421def..2415967 100755
--- a/rc.sysinit
+++ b/rc.sysinit
@@ -46,6 +46,12 @@ else
/bin/dmesg -n 3
fi
+echo > /proc/sys/kernel/hotplug
+
+stat_busy "Starting UDev Daemon"
+/sbin/udevd --daemon
+stat_done
+
HWCLOCK_PARAMS="--hctosys"
case $HARDWARECLOCK in
UTC) HWCLOCK_PARAMS+=" --utc";;
@@ -56,15 +62,7 @@ esac
if [[ $HWCLOCK_PARAMS ]]; then
# enable rtc access
/sbin/modprobe -q -a rtc-cmos rtc genrtc
- # If devtmpfs is used, the required RTC device already exists now
- # Otherwise, create whatever device is available
- if ! [[ -c /dev/rtc || -c /dev/rtc0 ]]; then
- for dev in /sys/class/rtc/rtc0/dev /sys/class/misc/rtc/dev; do
- [[ -e $dev ]] || continue
- IFS=: read -r major minor < "$dev"
- /bin/mknod /dev/rtc c $major $minor
- done
- fi
+ /sbin/udevadm settle
# Do a clock set here for a few reasons:
# 1. Make creation time on udev nodes sane (FS#8665)
@@ -79,12 +77,6 @@ if [[ $HWCLOCK_PARAMS ]]; then
fi
fi
-echo > /proc/sys/kernel/hotplug
-
-stat_busy "Starting UDev Daemon"
-/sbin/udevd --daemon
-stat_done
-
run_hook sysinit_udevlaunched
# Trigger udev uevents
--
1.7.2.1
