-#!/bin/sh
# live-initramfs helper functions, used by live-initramfs on boot and by live-snapshot
if [ ! -x "/bin/fstype" ]
is_supported_fs ()
{
- # FIXME: do something better like the scan of supported filesystems
fstype="${1}"
- case ${fstype} in
- vfat|iso9660|udf|ext2|ext3|ntfs|jffs2)
+ # Validate input first
+ if [ -z "${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
- ;;
- esac
+ 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 ${fstype} /proc/filesystems
+ then
+ return 0
+ fi
+ fi
+ fi
+ fi
return 1
}
if grep -q "^${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 "${mountp}" ]
then
mountp="/mnt/tmp_fs_size"
mkdir -p "${mountp}"
- mount -t $(get_fstype "${dev}") -o ro "${dev}" "${mountp}"
+ mount -n -t $(get_fstype "${dev}") -o ro "${dev}" "${mountp}"
doumount=1
fi
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
if [ -n ${readonly} ]
then
- if /sbin/losetup --help 2>&1 | grep -q -- "-r\b"
+ if losetup --help 2>&1 | grep -q -- "-r\b"
then
options="${options} -r"
fi
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}) ${mountp} || panic "Cannot bind-mount"
+ mount -n -o remount,"${opts}" "${dev}" "${old_mountp}" || panic "Remounting ${dev} ${opts} on ${old_mountp} failed"
+ mount -n -o bind "${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}"
+ mount -n -t $(get_fstype "${dev}") -o "${opts}" "${dev}" "${mountp}" || panic "Cannot mount ${dev} on ${mountp}"
fi
}