def find_and_mount_iso_image(source_path, mount_path):
"""Find ISO image and mount it.
:param str source_path: path to where to look for the iso; it could point to iso directly
:param str mount_path: where to mount the ISO image
:return: name of the ISO image file or empty string if ISO can't be used
"""
iso_name = find_first_iso_image(source_path)
if iso_name:
path_to_iso = _create_iso_path(source_path, iso_name)
if mount_iso_image(path_to_iso, mount_path):
return iso_name
return ""
def run(self):
"""Run Hard drive installation source setup.
Always sets up two mount points: First for the device, and second for the ISO image or a
bind for unpacked ISO. These depend on each other, and must be destroyed in the correct
order again.
:raise: SourceSetupError
:return: named tuple with path to the install tree and name of ISO if set or empty string
:rtype: SetupHardDriveResult instance
"""
log.debug("Setting up Hard drive source")
for mount_point in [self._device_mount, self._iso_mount]:
if os.path.ismount(mount_point):
raise SourceSetupError(
"The mount point {} is already in use.".format(
mount_point))
if not find_and_mount_device(self._partition, self._device_mount):
raise SourceSetupError(
"Could not mount device specified as {}".format(
self._partition))
full_path_on_mounted_device = os.path.normpath("{}/{}".format(
self._device_mount, self._directory))
iso_name = find_first_iso_image(full_path_on_mounted_device)
if iso_name:
full_path_to_iso = self._create_iso_path(
full_path_on_mounted_device, iso_name)
if mount_iso_image(full_path_to_iso, self._iso_mount):
log.debug("Using the ISO '%s' mounted at '%s'.", iso_name,
self._iso_mount)
return SetupHardDriveResult(self._iso_mount, iso_name)
if verify_valid_installtree(full_path_on_mounted_device):
log.debug("Using the directory at '%s'.",
full_path_on_mounted_device)
return SetupHardDriveResult(full_path_on_mounted_device, "")
raise SourceSetupError(
"Nothing useful found for Hard drive ISO source at partition={} directory={}"
.format(self._partition, self._directory))
def _find_and_mount_iso(self, device, device_mount_dir, iso_path,
iso_mount_dir):
"""Find and mount installation source from ISO on device.
Return changed path to the iso to save looking for iso in the future call.
"""
self._setup_device(device, mountpoint=device_mount_dir)
# check for ISO images in the newly mounted dir
path = device_mount_dir
if iso_path:
path = os.path.normpath("%s/%s" % (path, iso_path))
# XXX it would be nice to streamline this when we're just setting
# things back up after storage activation instead of having to
# pretend we don't already know which ISO image we're going to
# use
image = find_first_iso_image(path)
if not image:
payload_utils.teardown_device(device)
raise PayloadSetupError("failed to find valid iso image")
if path.endswith(".iso"):
path = os.path.dirname(path)
# this could already be set up the first time through
if not os.path.ismount(iso_mount_dir):
# mount the ISO on a loop
image = os.path.normpath("%s/%s" % (path, image))
payload_utils.mount(image,
iso_mount_dir,
fstype='iso9660',
options="ro")
if not iso_path.endswith(".iso"):
result_path = os.path.normpath("%s/%s" %
(iso_path, os.path.basename(image)))
while result_path.startswith("/"):
# ridiculous
result_path = result_path[1:]
return result_path
return iso_path
def find_and_mount_iso_image(image_location, mount_point):
"""Find a ISO image in a location and mount it.
:param str image_location: where the image ISO file is
:param str mount_point: where to mount the image
:return: success or not
:rtype: bool
"""
image_filename = find_first_iso_image(image_location)
if not image_filename:
return False
full_image_path = join_paths(image_location, image_filename)
try:
mount(full_image_path, mount_point, fstype='iso9660', options="ro")
return True
except OSError as e:
log.error("Mount of ISO file failed: %s", e)
return False
