echo ${r}
}
+is_supported_fs ()
+{
+ fstype="${1}"
+
+ # Validate input first
+ if [ -z "${fstype}" ]
+ then
+ return 1
+ fi
+
+ # Try to look if it is already supported by the kernel
+ if grep -q ${fstype} /proc/filesystems
+ then
+ return 0
+ else
+ # Then try to add support for it the gentle way using the initramfs capabilities
+ modprobe ${fstype}
+ if grep -q ${fstype} /proc/filesystems
+ then
+ return 0
+ # Then try the hard way if /root is already reachable
+ else
+ kmodule="/root/lib/modules/`uname -r`/${fstype}/${fstype}.ko"
+ if [ -e "${kmodule}" ]
+ then
+ insmod "${kmodule}"
+ if grep -q ${fstype} /proc/filesystems
+ then
+ return 0
+ fi
+ fi
+ fi
+ fi
+
+ return 1
+}
+
get_fstype ()
{
local FSTYPE
if grep -q "^${device} " /proc/mounts
then
- grep "^${device} " /proc/mounts | read d mountpoint rest
- echo ${mountpoint}
- return 0
+ # return the first found
+ grep "^${device} " /proc/mounts | cut -f2 -d ' '
fi
-
- return 1
}
lastline ()
if [ -z "${mountp}" ]
then
- mountp=$(where_is_mounted "${dev}")
+ mountp="$(where_is_mounted ${dev})"
- if [ "${?}" -gt 0 ]
+ if [ -z "${mountp}" ]
then
mountp="/mnt/tmp_fs_size"
local pattern=${3}
local offset=${4}
local encryption=${5}
+ local readonly=${6}
modprobe -q -b "${module}"
- udevsettle
+
+ if [ -x /sbin/udevadm ]
+ then
+ # lenny
+ udevadm settle
+ else
+ # etch
+ udevsettle
+ fi
for loopdev in ${pattern}
do
dev=$(sys2dev "${loopdev}")
options=''
+ if [ -n ${readonly} ]
+ then
+ if losetup --help 2>&1 | grep -q -- "-r\b"
+ then
+ options="${options} -r"
+ fi
+ fi
+
if [ 0 -lt "${offset}" ]
then
options="${options} -o ${offset}"
mountp="${2}"
opts="${3}"
- if where_is_mounted ${dev} > /dev/null
+ old_mountp="$(where_is_mounted ${dev})"
+
+ if [ -n "${old_mountp}" ]
then
- mount -o remount,"${opts}" ${dev} $(where_is_mounted ${dev}) || panic "Remounting failed"
- mount -o bind $(where_is_mounted ${dev}) ${mountp} || panic "Cannot bind-mount"
+ mount -o remount,"${opts}" "${dev}" "${old_mountp}" || panic "Remounting ${dev} ${opts} on ${old_mountp} failed"
+ mount -o bind "${old_mountp}" "${mountp}" || panic "Cannot bind-mount ${old_mountp} on ${mountp}"
else
mount -t $(get_fstype "${dev}") -o "${opts}" "${dev}" "${mountp}" || panic "Cannot mount ${dev} on ${mountp}"
fi
devname=$(sys2dev "${dev}")
devfstype="$(get_fstype ${devname})"
- case "${devfstype}" in
- vfat|ext2|ext3|jffs2)
- # FIXME: all supported block devices should be scanned
- mkdir -p "${snap_backing}"
- try_mount "${devname}" "${snap_backing}" "ro"
+ if is_supported_fs ${devfstype}
+ then
+ mkdir -p "${snap_backing}"
+ try_mount "${devname}" "${snap_backing}" "ro"
- for filename in ${filenames}
+ for filename in ${filenames}
do
- if [ -f "${snap_backing}/${filename}" ]
- then
- echo "${devname} ${snap_backing} ${filename}"
- return 0
- fi
- done
-
- umount ${snap_backing}
- ;;
- esac
+ if [ -f "${snap_backing}/${filename}" ]
+ then
+ echo "${devname} ${snap_backing} ${filename}"
+ return 0
+ fi
+ done
+
+ umount ${snap_backing}
+ fi
done
done
}