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# Hey Emacs, this is a -*- shell-script -*- !!!
# This file provides functions to implement access/update of disk
# images via guestmount.
######################################################################
diskimage_mount_guestmount ()
{
local disk="$1"
echo "Using guestmount to update disk image ${disk}..."
local mount_args=""
local m d
for m in $SYSTEM_DISK_MOUNTS ; do
d="${m#*:}" # Device is after colon
m="${m%:*}" # Mountpoint is before colon
mount_args="${mount_args}${mount_args:+ } --mount ${d}:${m}"
echo " mount ${m} from device ${d} configured"
done
[ -n "$mount_args" ] || mount_args="-i"
mkdir -p mnt
guestmount -a "$disk" $mount_args mnt || \
die "Failed to mount $disk using guestmount"
[ -d "mnt/root" ] || {
echo "Mounted directory does not look like a root filesystem"
ls -latr mnt
exit 1
}
}
# unmount a qemu image
diskimage_unmount_guestmount ()
{
echo "Unmounting disk"
sync; sync;
fusermount -u mnt
}
# These are all the same as loopback. We could do something cleverer,
# but this will suffice for now.
diskimage_mkdir_p_guestmount ()
{
mkdir -p "mnt$1"
}
diskimage_substitute_vars_guestmount ()
{
substitute_vars "$1" "mnt$2"
}
diskimage_chmod_guestmount ()
{
local mode="$1" ; shift
local i
for i ; do
# this should handle wildcards
eval chmod "$mode" "mnt$i"
done
}
diskimage_chmod_reference_guestmount ()
{
local ref="$1" ; shift
local i
for i ; do
# this should handle wildcards
eval chmod --reference="$ref" "mnt$i"
done
}
diskimage_is_file_guestmount ()
{
[ -f "mnt$1" ]
}
diskimage_is_directory_guestmount ()
{
[ -d "mnt$1" ]
}
diskimage_append_text_file_guestmount ()
{
cat "$1" >> "mnt$2"
}
diskimage_append_text_guestmount ()
{
echo "$1" >> "mnt$2"
}
diskimage_sed_guestmount ()
{
local file="$1" ; shift
sed -i.org "$@" "mnt$file"
}
diskimage_grep_guestmount ()
{
local file="$1" ; shift
grep "$@" "mnt$file"
}
diskimage_put_guestmount ()
{
if [ "$1" = "-" ] ; then
cat >"mnt$2"
else
cp "$1" "mnt$2"
fi
}
diskimage_ln_s_guestmount ()
{
ln -s "$1" "mnt$2"
}
diskimage_command_guestmount ()
{
chroot mnt "$@"
}
diskimage_mv_guestmount ()
{
mv "mnt$1" "mnt$2"
}
diskimage_rm_rf_guestmount ()
{
rm -rf "mnt$1"
}
######################################################################
diskimage_guestmount_sanity_check ()
{
if [ "$SYSTEM_DISK_FORMAT" = "qcow2" -a \
"$SYSTEM_DISK_ACCESS_METHOD" = "guestmount" ] ; then
check_command guestmount
check_command fusermount
fi
}
register_hook post_config_hooks diskimage_guestmount_sanity_check
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