def __init__(self, board, dryrun=False):
"""
:param board: :class:`Board` instance.
:param dryrun: Enable dryrun mode. Systems commands will be logged,
but not executed.
:type dryrun: boolean
"""
self._l = utils.logger.get_global_logger()
self._e = utils.executer.get_global_executer()
self._board = board
self._ld = LoopDevice()
self._dryrun = dryrun
self._e.dryrun = dryrun
self._ld.dryrun = dryrun
self._board.dryrun = dryrun
self._partitions = []
def __init__(self, board, dryrun=False):
"""
:param board: :class:`Board` instance.
:param dryrun: Enable dryrun mode. Systems commands will be logged,
but not executed.
:type dryrun: boolean
"""
self._l = utils.logger.get_global_logger()
self._e = utils.executer.get_global_executer()
self._board = board
self._ld = LoopDevice()
self._dryrun = dryrun
self._e.dryrun = dryrun
self._ld.dryrun = dryrun
self._board.dryrun = dryrun
self._partitions = []
class LoopDeviceInstaller(object):
"""
Class to handle SD-card operations in a loopback file to support the
installer.
Typical flow:
::
1. read_partitions()
2. format()
3. mount_partitions()
4. install_components()
5. release()
"""
def __init__(self, board, dryrun=False):
"""
:param board: :class:`Board` instance.
:param dryrun: Enable dryrun mode. Systems commands will be logged,
but not executed.
:type dryrun: boolean
"""
self._l = utils.logger.get_global_logger()
self._e = utils.executer.get_global_executer()
self._board = board
self._ld = LoopDevice()
self._dryrun = dryrun
self._e.dryrun = dryrun
self._ld.dryrun = dryrun
self._board.dryrun = dryrun
self._partitions = []
def __set_dryrun(self, dryrun):
self._dryrun = dryrun
self._board.dryrun = dryrun
self._e.dryrun = dryrun
self._ld.dryrun = dryrun
def __get_dryrun(self):
return self._dryrun
dryrun = property(__get_dryrun, __set_dryrun,
doc="""Enable dryrun mode. Systems commands will be
logged, but not executed.""")
def format(self, img_name, img_size_mb):
"""
Creates and formats the partitions in the SD card.
:returns: Returns true on success; false otherwise.
:exception DeviceException: On failure formatting the device.
"""
if not self.dryrun:
self._ld.check_img_size(img_size_mb)
self._l.info('Formatting %s (this may take a while)' % self._ld.name)
self._ld.attach_device(img_name, img_size_mb)
self._ld.create_partitions()
self._ld.attach_partitions(img_name, img_size_mb)
self._ld.format_partitions()
def mount_partitions(self, directory):
"""
Mounts the partitions in the specified directory.
:exception DeviceException: When unable to mount.
"""
self._ld.mount(directory)
def install_components(self):
"""
Installs the specified components for each partition.
:exception LoopDeviceInstallerError: On failure installing the components.
"""
try:
self._board.ld_install_components(self._ld)
except BoardError as e:
raise LoopDeviceInstallerError(e)
def release(self):
"""
Unmounts all partitions and release the given device.
:exception DeviceException: On failure releasing the device.
"""
self._ld.unmount()
self._ld.optimize_filesystems()
self._ld.check_filesystems()
self._ld.detach_partitions()
self._ld.detach_device()
def read_partitions(self, filename):
"""
Reads the partitions information from the given file.
:param filename: Path to the file with the partitions information.
:returns: Returns true on success; false otherwise.
"""
self._ld.read_partitions(filename)
class LoopDeviceInstaller(object):
"""
Class to handle SD-card operations in a loopback file to support the
installer.
Typical flow:
::
1. read_partitions()
2. format()
3. mount_partitions()
4. install_components()
5. release()
"""
def __init__(self, board, dryrun=False):
"""
:param board: :class:`Board` instance.
:param dryrun: Enable dryrun mode. Systems commands will be logged,
but not executed.
:type dryrun: boolean
"""
self._l = utils.logger.get_global_logger()
self._e = utils.executer.get_global_executer()
self._board = board
self._ld = LoopDevice()
self._dryrun = dryrun
self._e.dryrun = dryrun
self._ld.dryrun = dryrun
self._board.dryrun = dryrun
self._partitions = []
def __set_dryrun(self, dryrun):
self._dryrun = dryrun
self._board.dryrun = dryrun
self._e.dryrun = dryrun
self._ld.dryrun = dryrun
def __get_dryrun(self):
return self._dryrun
dryrun = property(__get_dryrun,
__set_dryrun,
doc="""Enable dryrun mode. Systems commands will be
logged, but not executed.""")
def format(self, img_name, img_size_mb):
"""
Creates and formats the partitions in the SD card.
:returns: Returns true on success; false otherwise.
:exception DeviceException: On failure formatting the device.
"""
if not self.dryrun:
self._ld.check_img_size(img_size_mb)
self._l.info('Formatting %s (this may take a while)' % self._ld.name)
self._ld.attach_device(img_name, img_size_mb)
self._ld.create_partitions()
self._ld.attach_partitions(img_name, img_size_mb)
self._ld.format_partitions()
def mount_partitions(self, directory):
"""
Mounts the partitions in the specified directory.
:exception DeviceException: When unable to mount.
"""
self._ld.mount(directory)
def install_components(self):
"""
Installs the specified components for each partition.
:exception LoopDeviceInstallerError: On failure installing the components.
"""
try:
self._board.ld_install_components(self._ld)
except BoardError as e:
raise LoopDeviceInstallerError(e)
def release(self):
"""
Unmounts all partitions and release the given device.
:exception DeviceException: On failure releasing the device.
"""
self._ld.unmount()
self._ld.optimize_filesystems()
self._ld.check_filesystems()
self._ld.detach_partitions()
self._ld.detach_device()
def read_partitions(self, filename):
"""
Reads the partitions information from the given file.
:param filename: Path to the file with the partitions information.
:returns: Returns true on success; false otherwise.
"""
self._ld.read_partitions(filename)
