add powermanagement and disk utils
This commit is contained in:
Ertuğrul Erata
@@ -0,0 +1,162 @@
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#!/bin/bash
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#
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# Stefan Seyfried, SUSE Linux Products GmbH, 2006
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# mostly taken from the powersave project
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. "${PM_FUNCTIONS}"
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# sanity check the environment if resume will be possible after hibernate
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checkhibernate()
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{
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echo "INFO: checking for suspend-to-disk prerequisites..."
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if [ -z "$IMAGE_SIZE" ]; then
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IMAGE_SIZE="`awk '/^MemTotal:/ { print int($2*1024*.45) }' /proc/meminfo`"
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fi
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# Default to partition style hibernation
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SWAP_TYPE=partition
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read CMDLINE < /proc/cmdline
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for CMD in $CMDLINE; do
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case $CMD in
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resume=*)
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RESUME=${CMD#*=}
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;;
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resume_offset=*)
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# Swap type is file as resume_offset is given
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SWAP_TYPE=file
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;;
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esac
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done
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if [ -z "$RESUME" ]; then
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# No resume= given in /proc/cmdline, failing.
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echo "ERROR: no resume parameter on kernel commandline, can not suspend"
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echo "no resume parameter on kernel commandline" >> $INHIBIT
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return 1
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fi
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if [ "$SWAP_TYPE" = file ] && [ "$SLEEP_MODULE" = "uswsusp" ]; then
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# File-style hibernating is not supported by uswsusp
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echo "ERROR: You must use the kernel hibernate method or tuxonice when suspending to swapfile, not uswsusp"
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echo "suspend to swapfile with uswsusp method not kernel" >> $INHIBIT
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return 1
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fi
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# the resume device can be a symlink, e.g. with LVM/EVMS or with
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# /dev/disk/by-id/foo
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RESUME=$(readlink -f $RESUME)
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OK=
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while read DEV TYPE SIZE USED PRI; do
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if [ "$TYPE" = "file" ] && [ "$SWAP_TYPE" = "file" ] && [ "$RESUME" = "$(df "$DEV" | tail -n +2 | cut -d ' ' -f 1)" ]; then
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OK=1
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break
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fi
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[ "$TYPE" != "partition" ] && continue
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[ "$DEV" != "$RESUME" ] && continue
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FREE=$[($SIZE-$USED)*1024] # get free space on DEV
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if [ $FREE -lt $IMAGE_SIZE ]; then
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IMAGE_SIZE=$[$FREE-10*1024*1024]
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fi
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OK=1
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break # we found the partition, no need to look further
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done < /proc/swaps
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if [ -z "$OK" ]; then
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if [ "$SWAP_TYPE" = "file" ]; then
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MSG_TYPE="swap file"
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else
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MSG_TYPE="resume partition"
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fi
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echo "ERROR: $MSG_TYPE '$RESUME' not active, can not suspend"
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echo "$MSG_TYPE '$RESUME' not active" >> $INHIBIT
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return 1
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fi
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if [ "$SLEEP_MODULE" = "kernel" ]; then
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echo " using kernel suspend method"
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read DEV < /sys/power/resume
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if [ "$DEV" = "0:0" ]; then
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echo "ERROR: no resume partition set up in /sys/power/resume"
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# maybe "resume=..." was given, but initrd did not set up
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# /sys/power/resume correctly.
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echo "resume device not correctly setup in /sys/power/resume" >> \
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$INHIBIT
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return 1
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fi
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X=$(stat -Lc '$((0x%t)):$((0x%T))' $RESUME)
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RDEV=$(eval echo $X)
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if [ "$DEV" != "$RDEV" ]; then
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echo "ERROR: /sys/power/resume ($DEV) disagrees with resume= parameter ($RDEV)"
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echo " can not suspend."
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echo "/sys/power/resume disagrees with resume= parameter" >> \
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$INHIBIT
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return 1
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fi
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if [ -n "$IMAGE_SIZE" -a -w /sys/power/image_size ]; then
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echo " setting image size to $IMAGE_SIZE"
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echo "$IMAGE_SIZE" > /sys/power/image_size 2>/dev/null
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fi
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fi
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if [ "$SLEEP_MODULE" = "uswsusp" ]; then
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echo " using userspace suspend method, temp. config file $S2DISK_CONF"
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if [ "$S2DISK_CONF" != "/etc/suspend.conf" ]; then
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rm -f $S2DISK_CONF
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# Generate S2DISK_CONF
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echo " setting resume device to $RESUME"
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echo "resume device = $RESUME" >> $S2DISK_CONF
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if [ -n "$IMAGE_SIZE" ]; then
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echo " setting image size to $IMAGE_SIZE"
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echo "image size = $IMAGE_SIZE" >> $S2DISK_CONF
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fi
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# add the parameters from /etc/suspend.conf to /var/lib/s2disk.conf
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if [ -e /etc/suspend.conf ]; then
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echo "# parameters taken from /etc/suspend.conf:" >> $S2DISK_CONF
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sed '/^[[:space:]]*\(#\|$\)/d;' /etc/suspend.conf >> $S2DISK_CONF
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echo " adding these parameters from /etc/suspend.conf:"
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sed '/^[[:space:]]*\(#\|$\)/d;s/^/ /;' /etc/suspend.conf
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fi
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else
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# don't overwrite the user's config file, but warn about the issue
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echo "WARNING: S2DISK_CONF is set to /etc/suspend.conf"
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echo " Disabling automatic generation of config file."
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echo " This is most likely a configuration error and will cause problems"
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echo " unless you configure /etc/suspend.conf completely on your own!"
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fi
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fi
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return 0
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}
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# this only makes sense on hibernate or on suspend-hybrid
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case $1 in
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hibernate)
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;;
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suspend)
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if [ "$2" != suspend_hybrid ]; then
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exit 0
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fi
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;;
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*)
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exit $NA
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;;
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esac
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[ -e /etc/pm/config.d/$1 ] && . /etc/pm/config.d/$1
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if [ -z "$SLEEP_MODULE" ]; then
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# Decide the SLEEP_MODULE if not given
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if [ -x /usr/sbin/s2disk -a -c /dev/snapshot ]; then
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SLEEP_MODULE="uswsusp"
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else
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SLEEP_MODULE="kernel"
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fi
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fi
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if ! checkhibernate; then
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echo "WARNING: $INHIBIT will be created to prevent suspending!"
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touch $INHIBIT
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exit 1
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fi
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exit 0
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