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|
#!/bin/sh
# Set up/shutdown the flashybrid system, including the ramdisk and partial
# directory bind mounts. This needs to run at the part of system bootup that
# mounts all the disks. It should also run at shutdown right before
# filesystems are unmounted.
# Licensed under the terms of GPL v2
# Diego Iastrubni <diego.iastrubni@xorcom.com> 2006
# Joey Hess <joeyh@debian.org> 2002-2006
### BEGIN INIT INFO
# Provides: flashybrid
# Required-Start: $all
# Required-Stop: $syslog
# Should-Start: $local_fs
# Should-Stop: $local_fs
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: automates use of a flash disk as the root filesystem
# Description: Flashybrid is a system to help in setting up and managing hybrid
# flash/disk/ram based Debian systems which can run most of the time
# using only a small flash disk for their root filesystem and do a useful,
# but limited task (such as being a router, or a PDA, or a rescue system
# on a USB keydrive). The flash can be as small as 32 mb, though 64 to 256
# mb is more comfortable.
### END INIT INFO
CONFDIR=/etc/flashybrid
if [ -e $CONFDIR/config ]; then
. $CONFDIR/config
fi
ENABLED=no
if [ -e /etc/default/flashybrid ]; then
. /etc/default/flashybrid
fi
if [ -z "$RAMMOUNT" ]; then
exit 0
fi
is_mounted () {
grep -q " $1 " /proc/mounts
}
case "$1" in
start)
if [ "$ENABLED" != yes ]; then
echo "Not setting up flashybrid system: disabled."
exit
fi
if [ ! -d "$RAMMOUNT" ] ; then
echo "Error, RAMMOUNT directory is not found ($RAMMOUNT)"
exit 1
fi
if [ "$VERBOSE" != yes ]; then
echo -n "Setting up flashybrid system..."
fi
EXTRA_PARAMS=""
if [ "xx$FLASH_MAX" != "xx" ]; then
EXTRA_PARAMS=" -o size=$FLASH_MAX "
fi
# Set up ram disk to hold variable data.
if ! is_mounted $RAMMOUNT; then
mount tmpfs -t tmpfs $RAMMOUNT $EXTRA_PARAMS
fi
# Temporary directories on ram disk.
cp $CONFDIR/ramtmp $RAMMOUNT/.fh-config-ramtmp
for dir in $(grep -v '^#' $CONFDIR/ramtmp); do
if [ -d $dir ]; then
mkdir -p -m 1777 $RAMMOUNT/$dir
if is_mounted $dir; then
umount $dir
fi
mount --bind $RAMMOUNT/$dir $dir
fi
done
# when syncing we will use this configuration for restoring,
# as the user may modify the configuration on the disk, and completely
# mess up the system, eventually making his machine unusable
cp $CONFDIR/ramstore $RAMMOUNT/.fh-config-ramstore
# Copy data from flash to ram disk for these directories
for dir in $(grep -v '^#' $CONFDIR/ramstore); do
# Skip dirs that are not present.
if [ -d $dir ]; then
if [ "$VERBOSE" = yes ]; then
echo -n "Syncrhonizing RAM - $dir"
fi
ramdir=$RAMMOUNT$dir
if is_mounted $dir; then
umount $dir
fi
if is_mounted $ramdir.flash; then
umount $ramdir.flash
fi
if [ ! -d $ramdir ]; then
mkdir -p ${ramdir%/*} # dirname
cp -a $dir $ramdir
fi
mkdir -p $ramdir.flash
mount --bind $dir $ramdir.flash
mount --bind $ramdir $dir
if [ "$VERBOSE" = yes ]; then
echo "."
fi
fi
done
if [ "$VERBOSE" != yes ]; then
echo "done."
fi
mountro
;;
stop)
if [ "$ENABLED" != yes ]; then
echo "Not shutting down flashybrid system: disabled."
exit
fi
fh-sync
mountrw
;;
reload)
echo "This target is available only for compatibility."
echo "Gracefully exiting"
;;
restart)
echo "This target is available only for compatibility, and usually will fail to work"
echo "If you really want to restart this service please try 'force-reload'."
echo
echo "Gracefully exiting"
;;
force-reload)
$0 stop
$0 start
;;
*)
echo "Usage: $0 {start|stop|restart|force-reload}"
exit 1
;;
esac
|
