X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=scripts%2Flive-bottom%2F12fstab;h=22c11a017f8980d7511c5a05c43359f1acb7f5c1;hb=d834f110aab0b46faa00b7210fdada2a83bd5f86;hp=3d036c9700a9e0d271b3c91e1a904502d68a22b8;hpb=658c0f1514abe8176d76897c61cad8e0ba8ed610;p=live-boot-grml.git

diff --git a/scripts/live-bottom/12fstab b/scripts/live-bottom/12fstab
index 3d036c9..22c11a0 100755
--- a/scripts/live-bottom/12fstab
+++ b/scripts/live-bottom/12fstab
@@ -5,6 +5,7 @@
 # initramfs-tools header
 
 PREREQ=""
+FSTAB=/root/etc/fstab
 
 prereqs()
 {
@@ -27,17 +28,69 @@ then
 	exit 0
 fi
 
-log_begin_msg "Configuring fstab..."
+log_begin_msg "Configuring fstab"
 
 # live-initramfs 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 [ -z "${NOSWAP}" ]
+then
+	devices=""
+
+	for device in /dev/[hs]d[a-z][0-9]*
+	do
+		if ! [ -b "${device}" ]
+		then
+			continue
+		fi
+
+		/lib/udev/vol_id ${device%%[0-9]*} 2>/dev/null | grep -q "^ID_FS_USAGE=raid" && continue
+
+		magic=$(/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