Unbreak "update" script, by doing a mkdir -p of the relevant

directories when writing to disk.

Use the (yet to be committed) sysctl variable kern.bootdevname
to derive the device name, fallback to /dev/fd0 if kern.bootdevname
is unset or not available.

release/picobsd/mfs_tree/stand/update

@@ -1,39 +1,50 @@
 #!/bin/sh
 # $FreeBSD$
-# script to edit and save some config file(s)
+# script to edit and save some config file(s).
+# If called with no arguments, it edits 3 files in /etc
 thefiles=$*
-pwd=`pwd`
-dev="/dev/fd0c"
-echo "Updating content on ${dev}: "
+[ -z "$thefiles" ] && \
+    thefiles="/etc/rc.conf /etc/rc.firewall /etc/master.passwd"
+dev=`sysctl -n kern.bootdevname`
+[ -z ${dev} ] && dev="/dev/fd0"
 mount ${dev} /mnt
-if [ "X$?" != "X0" ] ; then
+if [ "$?" != "0" ] ; then
 	echo ""
 	echo "Cannot mount ${dev} read-write!"
 	exit 1
 fi
-if [ "$thefiles" = "" ] ; then
-    srcs=`ls /etc`
-    for i in $srcs ; do
-	if [ -f /mnt/etc/$i.gz ] ; then
-	    echo -n "$i ..."
-	    gzip < /etc/$i > /mnt/etc/$i.gz
-	fi
-    done
-elif [ "$thefiles" = "passwd" ] ; then
-    ee /etc/master.passwd
-    pwd_mkdb master.passwd
-    gzip < /etc/master.passwd /mnt/etc/master.passwd.gz
-else
-    for i in $thefiles; do
-	if [ -f $i ] ; then
-	    ee $i
-	    gzip < $i > /mnt/$i.gz
-	fi
-    done
-fi
-echo " Done."
-echo -n "Updating kernel parameters...  "
-kget /mnt/boot/kernel.conf
+
+echo "Updating ${thefiles} on ${dev}: "
+
+for f in ${thefiles} ; do
+    case $f in
+    /etc )
+	echo  "Update all files in $f :"
+	srcs=`ls $f`
+	for i in $srcs ; do
+	    if [ -f /mnt${f}/${i}.gz ]; then
+		echo -n "$i ..."
+		gzip < $f/$i > /mnt${f}/${i}.gz
+	    fi
+	done
+	echo " Done."
+	;;
+
+    passwd|master.passwd)
+	mkdir -p /mnt/etc
+	ee /etc/master.passwd
+	pwd_mkdb /etc/master.passwd
+	gzip < /etc/master.passwd > /mnt/etc/master.passwd.gz
+	;;
+
+    /*)	# only absolute pathnames are ok
+	mkdir -p /mnt/etc /mnt/root
+	[ -f $f ] && ee $f && gzip < $f > /mnt${f}.gz
+        ;;
+
+    *)
+	echo "File $f not recognised, you must use an absolute pathname."
+	;;
+    esac
+done
 umount /mnt
-cd ${pwd}
-echo " Done."