Turn the init.d scripts into autoconf config files

This change ensures the paths used by the provided init scripts
always reference the prefixes provided at configure time.  The
@sbindir@ and @sysconfdir@ prefixes will be correctly replaced
at build time.

Signed-off-by: Brian Behlendorf <[email protected]>
Closes #336

1 files changed, 244 insertions, 0 deletions

diff --git a/etc/init.d/zfs.fedora.in b/etc/init.d/zfs.fedora.in
new file mode 100644
index 000000000..04f2077ce
--- /dev/null
+++ b/etc/init.d/zfs.fedora.in
@@ -0,0 +1,244 @@
+#!/bin/bash
+#
+# zfs           This script will mount/umount the zfs filesystems.
+#
+# chkconfig:    2345 01 99
+# description:  This script will mount/umount the zfs filesystems during
+#               system boot/shutdown.  Configuration of which filesystems
+#               should be mounted is handled by the zfs 'mountpoint' and
+#               'canmount' properties.  See the zfs(8) man page for details.
+#               It is also responsible for all userspace zfs services.
+#
+### BEGIN INIT INFO
+# Provides: zfs
+# Required-Start:
+# Required-Stop:
+# Should-Start:
+# Should-Stop:
+# Default-Start: 2 3 4 5
+# Default-Stop: 1
+# Short-Description: Mount/umount the zfs filesystems
+# Description: ZFS is an advanced filesystem designed to simplify managing
+#              and protecting your data.  This service mounts the ZFS
+#              filesystems and starts all related zfs services.
+### END INIT INFO
+
+export PATH=/usr/local/sbin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
+
+# Source function library & LSB routines
+. /etc/rc.d/init.d/functions
+
+# script variables
+RETVAL=0
+ZFS="@sbindir@/zfs"
+ZPOOL="@sbindir@/zpool"
+ZPOOL_CACHE="@sysconfdir@/zfs/zpool.cache"
+servicename=zfs
+LOCKFILE=/var/lock/subsys/$servicename
+
+# functions
+zfs_installed() {
+	modinfo zfs > /dev/null 2>&1 || return 5
+	$ZPOOL  > /dev/null 2>&1
+	[ $? == 127 ] && return 5
+	$ZFS    > /dev/null 2>&1
+	[ $? == 127 ] && return 5
+	return 0
+}
+
+reregister_mounts() {
+	cat /etc/mtab | while read -r fs mntpnt fstype opts rest ; do
+		fs=`printf '%b\n' "$fs"`
+		mntpnt=`printf '%b\n' "$mntpnt"`
+		if [ "$fstype" == "zfs" ] ; then
+			if [ "$mntpnt" == "/" ] ; then
+				mount -f -o zfsutil -t zfs --move / /removethismountpointhoweverpossible
+				umount --fake /removethismountpointhoweverpossible
+			else
+				umount --fake "$mntpnt"
+			fi
+		elif echo "$fs" | grep -q "^/dev/zd" ; then
+			if [ "$mntpnt" == "/" ] ; then
+				mount -f -t "$fstype" --move / /removethismountpointhoweverpossible
+				umount --fake /removethismountpointhoweverpossible
+			else
+				umount --fake "$mntpnt"
+			fi
+		fi
+	done
+	cat /proc/mounts | while read -r fs mntpnt fstype opts rest ; do
+		fs=`printf '%b\n' "$fs"`
+		mntpnt=`printf '%b\n' "$mntpnt"`
+		if [ "$fstype" == "zfs" ] ; then
+			mount -f -t zfs -o zfsutil "$fs" "$mntpnt"
+		elif echo "$fs" | grep -q "^/dev/zd" ; then
+			mount -f -t "$fstype" -o "$opts" "$fs" "$mntpnt"
+		fi
+	done
+}
+
+# i need a bash guru to simplify this, since this is copy and paste, but donno how
+# to correctly dereference variable names in bash, or how to do this right
+
+declare -A MTAB
+declare -A FSTAB
+
+# first parameter is a regular expression that filters mtab
+read_mtab() {
+        for fs in "${!MTAB[@]}" ; do unset MTAB["$fs"] ; done
+        while read -r fs mntpnt fstype opts blah ; do
+                fs=`printf '%b\n' "$fs"`
+                MTAB["$fs"]=$mntpnt
+        done < <(grep "$1" /etc/mtab)
+}
+
+in_mtab() {
+        [ "${MTAB[$1]}" != "" ]
+        return $?
+}
+
+# first parameter is a regular expression that filters fstab
+read_fstab() {
+        for fs in "${!FSTAB[@]}" ; do unset FSTAB["$fs"] ; done
+        while read -r fs mntpnt fstype opts blah ; do
+                fs=`printf '%b\n' "$fs"`
+                FSTAB["$fs"]=$mntpnt
+        done < <(grep "$1" /etc/fstab)
+}
+
+in_fstab() {
+        [ "${FSTAB[$1]}" != "" ]
+        return $?
+}
+
+start()
+{
+	if [ -f "$LOCKFILE" ] ; then return 0 ; fi
+
+	# check if ZFS is installed.  If not, comply to FC standards and bail
+	zfs_installed || {
+		action $"Checking if ZFS is installed: not installed" /bin/false
+		return 5
+	}
+
+        # Requires selinux policy which has not been written.
+        if [ -r "/selinux/enforce" ] &&
+           [ "$(cat /selinux/enforce)" = "1" ]; then
+                action $"SELinux ZFS policy required: " /bin/false || return 6
+        fi
+
+	# Delay until all required block devices are present.
+	udevadm settle
+
+	# load kernel module infrastructure
+	if ! grep -q zfs /proc/modules ; then
+		action $"Loading kernel ZFS infrastructure: " modprobe zfs || return 5
+	fi
+
+	# fix mtab to include already-mounted fs filesystems, in case there are any
+	# we ONLY do this if mtab does not point to /proc/mounts
+	# which is the case in some systems (systemd may bring that soon)
+	if ! readlink /etc/mtab | grep -q /proc ; then
+		if grep -qE "(^/dev/zd| zfs )" /proc/mounts ; then
+			action $"Registering already-mounted ZFS filesystems and volumes: " reregister_mounts || return 150
+		fi
+	fi
+
+        if [ -f $ZPOOL_CACHE ] ; then
+
+		echo -n $"Importing ZFS pools not yet imported: "
+		$ZPOOL import -c $ZPOOL_CACHE -aN || true # stupid zpool will fail if all pools are already imported
+		RETVAL=$?
+		if [ $RETVAL -ne 0 ]; then
+			failure "Importing ZFS pools not yet imported: "
+			return 151
+		fi
+		success "Importing ZFS pools not yet imported: "
+
+	fi
+
+	action $"Mounting ZFS filesystems not yet mounted: " $ZFS mount -a || return 152
+
+	action $"Exporting ZFS filesystems: " $ZFS share -a || return 153
+
+	read_mtab  "^/dev/zd"
+	read_fstab "^/dev/zd"
+
+	template=$"Mounting volume %s registered in fstab: "
+	for volume in "${!FSTAB[@]}" ; do
+		if in_mtab "$volume" ; then continue ; fi
+		string=`printf "$template" "$volume"`
+		action "$string" mount "$volume"
+	done
+
+	touch "$LOCKFILE"
+}
+
+stop()
+{
+	if [ ! -f "$LOCKFILE" ] ; then return 0 ; fi
+
+	# check if ZFS is installed.  If not, comply to FC standards and bail
+	zfs_installed || {
+		action $"Checking if ZFS is installed: not installed" /bin/false
+		return 5
+	}
+
+	# the poweroff of the system takes care of this
+	# but it never unmounts the root filesystem itself
+	# shit
+
+	action $"Syncing ZFS filesystems: " sync
+	     # about the only thing we can do, and then we
+	     # hope that the umount process will succeed
+	     # unfortunately the umount process does not dismount
+	     # the root file system, there ought to be some way
+	     # we can tell zfs to just flush anything in memory
+	     # when a request to remount,ro comes in
+
+	#echo -n $"Unmounting ZFS filesystems: "
+	#$ZFS umount -a
+	#RETVAL=$?
+	#if [ $RETVAL -ne 0 ]; then
+	#	failure
+
+	#	return 8
+	#fi
+	#success
+
+	rm -f "$LOCKFILE"
+}
+
+# See how we are called
+case "$1" in
+	start)
+		start
+		RETVAL=$?
+		;;
+	stop)
+		stop
+		RETVAL=$?
+		;;
+	status)
+		lsmod | grep -q zfs || RETVAL=3
+		$ZPOOL status && echo && $ZFS list || {
+			[ -f "$LOCKFILE" ] && RETVAL=2 || RETVAL=4
+		}
+		;;
+	restart)
+		stop
+		start
+		;;
+	condrestart)
+		if [ -f "$LOCKFILE" ] ; then
+			stop
+			start
+		fi
+		;;
+	*)
+		echo $"Usage: $0 {start|stop|status|restart|condrestart}"
+		RETVAL=3
+		;;
+esac
+
+exit $RETVAL