X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive-bottom%2F12fstab;h=31e1e72ad3166a83c90e252250589a0877094a72;hb=ef5358e6ff01441de420298f756f497cf131b3d5;hp=b5b5602ca9e993d12efa79bee46b8dca68500cf9;hpb=526a7c2e15a71dbaef918007637973c3b61986fa;p=live-boot-grml.git

diff --git a/scripts/live-bottom/12fstab b/scripts/live-bottom/12fstab
index b5b5602..31e1e72 100755
--- a/scripts/live-bottom/12fstab
+++ b/scripts/live-bottom/12fstab
@@ -5,6 +5,7 @@
 # initramfs-tools header
 
 PREREQ=""
+FSTAB=/root/etc/fstab
 
 prereqs()
 {
@@ -18,21 +19,86 @@ case "${1}" in
 		;;
 esac
 
-# live-initramfs header
+# live-boot header
 
 . /scripts/live-functions
 
-log_begin_msg "Configuring fstab..."
+if [ -n "${NOFSTAB}" ]
+then
+	exit 0
+fi
+
+log_begin_msg "Configuring fstab"
 
-# live-initramfs script
+# live-boot script
 
-FSTAB=/root/etc/fstab
+# Create a fake fstab only if it doesn't exist or if its the debootstrap template
+if [ ! -f "${FSTAB}" ] || grep -qs 'UNCONFIGURED FSTAB FOR BASE SYSTEM' "${FSTAB}"
+then
+
+cat > ${FSTAB} << EOF
+# /etc/fstab: static file system information.
+#
+# <file system> <mount point>   <type>  <options>       <dump>  <pass>
 
-cat >> $FSTAB << EOF
-${UNIONTYPE} / ${UNIONTYPE} rw 0 0
-tmpfs /tmp tmpfs nosuid,nodev 0 0
 EOF
 
+fi
+
+if ! grep -qs  "^${UNIONTYPE}" "${FSTAB}"
+then
+	echo "${UNIONTYPE} / ${UNIONTYPE} rw 0 0" >> "${FSTAB}"
+fi
+
+if ! grep -qs "^tmpfs /tmp" "${FSTAB}"
+then
+	echo "tmpfs /tmp tmpfs nosuid,nodev 0 0" >> "${FSTAB}"
+fi
+
+if [ -n "${SWAPON}" ]
+then
+	devices=""
+
+	for device in /dev/[hs]d[a-z][0-9]*
+	do
+		if ! [ -b "${device}" ]
+		then
+			continue
+		fi
+
+		# udev (>= 146) no longer provides vol_id
+		if [ -x /lib/udev/vol_id ]
+		then
+			# lenny
+			/lib/udev/vol_id ${device%%[0-9]*} 2>/dev/null | grep -q "^ID_FS_USAGE=raid" && continue
+		else
+			# squeeze
+			/sbin/blkid -o udev -p ${device%%[0-9]*} | grep -q "^ID_FS_USAGE=raid" && continue
+		fi
+
+		magic=$(/bin/dd if="${device}" bs=4086 skip=1 count=1 2>/dev/null | /bin/dd bs=10 count=1 2>/dev/null) || continue
+
+		if [ "${magic}" = "SWAPSPACE2" -o "${magic}" = "SWAP-SPACE" ]
+		then
+			#log "Found ${device}"
+			devices="${devices} ${device}"
+		fi
+	done
+
+	# Remove all auto swap entries
+	if grep -qs  "swap swap" "${FSTAB}"
+	then
+		grep -v "swap swap" "${FSTAB}" > "${FSTAB}".tmp
+		mv "${FSTAB}".tmp "${FSTAB}"
+	fi
+
+	# Add new swap entries
+	for device in ${devices}
+	do
+		echo "${device} swap swap defaults 0 0" >> "${FSTAB}"
+	done
+fi
+
 # disabled for now
 #rm -f /root/etc/rcS.d/S*checkroot.sh