def find_candidate_devs(probe_optical=True, dslist=None):
"""Return a list of devices that may contain the config drive.
The returned list is sorted by search order where the first item has
should be searched first (highest priority)
config drive v1:
Per documentation, this is "associated as the last available disk on the
instance", and should be VFAT.
Currently, we do not restrict search list to "last available disk"
config drive v2:
Disk should be:
* either vfat or iso9660 formated
* labeled with 'config-2' or 'CONFIG-2'
"""
if dslist is None:
dslist = []
# query optical drive to get it in blkid cache for 2.6 kernels
if probe_optical:
for device in OPTICAL_DEVICES:
try:
util.find_devs_with(path=device)
except util.ProcessExecutionError:
pass
by_fstype = []
for fs_type in FS_TYPES:
by_fstype.extend(util.find_devs_with("TYPE=%s" % (fs_type)))
by_label = []
for label in LABEL_TYPES:
by_label.extend(util.find_devs_with("LABEL=%s" % (label)))
# give preference to "last available disk" (vdb over vda)
# note, this is not a perfect rendition of that.
by_fstype.sort(reverse=True)
by_label.sort(reverse=True)
# combine list of items by putting by-label items first
# followed by fstype items, but with dupes removed
candidates = (by_label + [d for d in by_fstype if d not in by_label])
# We are looking for a block device or partition with necessary label or
# an unpartitioned block device (ex sda, not sda1)
devices = [d for d in candidates
if d in by_label or not util.is_partition(d)]
LOG.debug("devices=%s dslist=%s", devices, dslist)
if devices and "IBMCloud" in dslist:
# IBMCloud uses config-2 label, but limited to a single UUID.
ibm_platform, ibm_path = get_ibm_platform()
if ibm_path in devices:
devices.remove(ibm_path)
LOG.debug("IBMCloud device '%s' (%s) removed from candidate list",
ibm_path, ibm_platform)
return devices
def find_ephemeral_part():
"""
Locate the default ephmeral0.1 device. This will be the first device
that has a LABEL of DEF_EPHEMERAL_LABEL and is a NTFS device. If Azure
gets more ephemeral devices, this logic will only identify the first
such device.
"""
c_label_devs = util.find_devs_with("LABEL=%s" % DEF_EPHEMERAL_LABEL)
c_fstype_devs = util.find_devs_with("TYPE=ntfs")
for dev in c_label_devs:
if dev in c_fstype_devs:
return dev
return None
def user_data_vsphere(self):
'''
vSphere specific userdata read
If on vSphere the user data will be contained on the
cdrom device in file <user_data_file>
To access it:
Leverage util.mount_cb to:
mkdir <tmp mount dir>
mount /dev/fd0 <tmp mount dir>
The call back passed to util.mount_cb will do:
read <tmp mount dir>/<user_data_file>
'''
return_str = None
cdrom_list = util.find_devs_with('LABEL=CDROM')
for cdrom_dev in cdrom_list:
try:
return_str = util.mount_cb(cdrom_dev, read_user_data_callback)
if return_str:
break
except OSError as err:
if err.errno != errno.ENOENT:
raise
except util.MountFailedError:
util.logexc(LOG, "Failed to mount %s when looking for user "
"data", cdrom_dev)
self.userdata_raw = return_str
self.metadata = META_DATA_NOT_SUPPORTED
if return_str:
return True
else:
return False
def transport_iso9660(require_iso=True):
# Go through mounts to see if it was already mounted
mounts = util.mounts()
for (dev, info) in mounts.items():
fstype = info['fstype']
if fstype != "iso9660" and require_iso:
continue
if not maybe_cdrom_device(dev):
continue
mp = info['mountpoint']
(_fname, contents) = get_ovf_env(mp)
if contents is not False:
return contents
if require_iso:
mtype = "iso9660"
else:
mtype = None
# generate a list of devices with mtype filesystem, filter by regex
devs = [dev for dev in
util.find_devs_with("TYPE=%s" % mtype if mtype else None)
if maybe_cdrom_device(dev)]
for dev in devs:
try:
(_fname, contents) = util.mount_cb(dev, get_ovf_env, mtype=mtype)
except util.MountFailedError:
LOG.debug("%s not mountable as iso9660", dev)
continue
if contents is not False:
return contents
return None
def cfg_drive_device():
""" get the config drive device. return a string like '/dev/vdb'
or None (if there is no non-root device attached). This does not
check the contents, only reports that if there *were* a config_drive
attached, it would be this device.
per config_drive documentation, this is
"associated as the last available disk on the instance"
"""
if 'CLOUD_INIT_CONFIG_DRIVE_DEVICE' in os.environ:
return(os.environ['CLOUD_INIT_CONFIG_DRIVE_DEVICE'])
# we are looking for a raw block device (sda, not sda1) with a vfat
# filesystem on it.
letters = "abcdefghijklmnopqrstuvwxyz"
devs = util.find_devs_with("TYPE=vfat")
# filter out anything not ending in a letter (ignore partitions)
devs = [f for f in devs if f[-1] in letters]
# sort them in reverse so "last" device is first
devs.sort(reverse=True)
if len(devs):
return(devs[0])
return(None)
def list_possible_azure_ds_devs():
# return a sorted list of devices that might have a azure datasource
devlist = []
for fstype in ("iso9660", "udf"):
devlist.extend(util.find_devs_with("TYPE=%s" % fstype))
devlist.sort(reverse=True)
return devlist
def _os_name_to_device(self, name):
device = None
try:
criteria = 'LABEL=%s' % (name)
if name == 'swap':
criteria = 'TYPE=%s' % (name)
dev_entries = util.find_devs_with(criteria)
if dev_entries:
device = dev_entries[0]
except util.ProcessExecutionError:
pass
return device
def can_dev_be_reformatted(devpath):
# determine if the ephemeral block device path devpath
# is newly formatted after a resize.
if not os.path.exists(devpath):
return False, "device %s does not exist" % devpath
realpath = os.path.realpath(devpath)
LOG.debug("Resolving realpath of %s -> %s", devpath, realpath)
# it is possible that the block device might exist, but the kernel
# have not yet read the partition table and sent events. we udevadm settle
# to hope to resolve that. Better here would probably be to test and see,
# and then settle if we didn't find anything and try again.
if util.which("udevadm"):
util.subp(["udevadm", "settle"])
# devpath of /dev/sd[a-z] or /dev/disk/cloud/azure_resource
# where partitions are "<devpath>1" or "<devpath>-part1" or "<devpath>p1"
part1path = None
for suff in ("-part", "p", ""):
cand = devpath + suff + "1"
if os.path.exists(cand):
if os.path.exists(devpath + suff + "2"):
msg = ("device %s had more than 1 partition: %s, %s" % devpath, cand, devpath + suff + "2")
return False, msg
part1path = cand
break
if part1path is None:
return False, "device %s was not partitioned" % devpath
real_part1path = os.path.realpath(part1path)
ntfs_devices = util.find_devs_with("TYPE=ntfs", no_cache=True)
LOG.debug("ntfs_devices found = %s", ntfs_devices)
if real_part1path not in ntfs_devices:
msg = "partition 1 (%s -> %s) on device %s was not ntfs formatted" % (part1path, real_part1path, devpath)
return False, msg
def count_files(mp):
ignored = set(["dataloss_warning_readme.txt"])
return len([f for f in os.listdir(mp) if f.lower() not in ignored])
bmsg = "partition 1 (%s -> %s) on device %s was ntfs formatted" % (part1path, real_part1path, devpath)
try:
file_count = util.mount_cb(part1path, count_files)
except util.MountFailedError as e:
return False, bmsg + " but mount of %s failed: %s" % (part1path, e)
if file_count != 0:
return False, bmsg + " but had %d files on it." % file_count
return True, bmsg + " and had no important files. Safe for reformatting."
def find_candidate_devs():
"""
Return a list of devices that may contain the context disk.
"""
combined = []
for f in ('LABEL=CONTEXT', 'LABEL=CDROM', 'TYPE=iso9660'):
devs = util.find_devs_with(f)
devs.sort()
for d in devs:
if d not in combined:
combined.append(d)
return combined
def find_fabric_formatted_ephemeral_part():
"""
Locate the first fabric formatted ephemeral device.
"""
potential_locations = ["/dev/disk/cloud/azure_resource-part1", "/dev/disk/azure/resource-part1"]
device_location = None
for potential_location in potential_locations:
if os.path.exists(potential_location):
device_location = potential_location
break
if device_location is None:
return None
ntfs_devices = util.find_devs_with("TYPE=ntfs")
real_device = os.path.realpath(device_location)
if real_device in ntfs_devices:
return device_location
return None
def find_candidate_devs():
"""Return a list of devices that may contain the config drive.
The returned list is sorted by search order where the first item has
should be searched first (highest priority)
config drive v1:
Per documentation, this is "associated as the last available disk on the
instance", and should be VFAT.
Currently, we do not restrict search list to "last available disk"
config drive v2:
Disk should be:
* either vfat or iso9660 formated
* labeled with 'config-2'
"""
# Query optical drive to get it in blkid cache for 2.6 kernels
util.find_devs_with(path="/dev/sr0")
util.find_devs_with(path="/dev/sr1")
by_fstype = (util.find_devs_with("TYPE=vfat") +
util.find_devs_with("TYPE=iso9660"))
by_label = util.find_devs_with("LABEL=config-2")
# give preference to "last available disk" (vdb over vda)
# note, this is not a perfect rendition of that.
by_fstype.sort(reverse=True)
by_label.sort(reverse=True)
# combine list of items by putting by-label items first
# followed by fstype items, but with dupes removed
combined = (by_label + [d for d in by_fstype if d not in by_label])
# We are looking for a block device or partition with necessary label or
# an unpartitioned block device.
combined = [d for d in combined
if d in by_label or not util.is_partition(d)]
return combined
def get_data(self):
defaults = {
"instance-id": "nocloud", "dsmode": self.dsmode
}
found = []
md = {}
ud = ""
try:
# parse the kernel command line, getting data passed in
if parse_cmdline_data(self.cmdline_id, md):
found.append("cmdline")
except:
util.logexc(log)
return False
# check to see if the seeddir has data.
seedret = {}
if util.read_optional_seed(seedret, base=self.seeddir + "/"):
md = util.mergedict(md, seedret['meta-data'])
ud = seedret['user-data']
found.append(self.seeddir)
log.debug("using seeded cache data in %s" % self.seeddir)
# if the datasource config had a 'seedfrom' entry, then that takes
# precedence over a 'seedfrom' that was found in a filesystem
# but not over external medi
if 'seedfrom' in self.ds_cfg and self.ds_cfg['seedfrom']:
found.append("ds_config")
md["seedfrom"] = self.ds_cfg['seedfrom']
fslist = util.find_devs_with("TYPE=vfat")
fslist.extend(util.find_devs_with("TYPE=iso9660"))
label_list = util.find_devs_with("LABEL=cidata")
devlist = list(set(fslist) & set(label_list))
devlist.sort(reverse=True)
for dev in devlist:
try:
(newmd, newud) = util.mount_callback_umount(dev,
util.read_seeded)
md = util.mergedict(newmd, md)
ud = newud
# for seed from a device, the default mode is 'net'.
# that is more likely to be what is desired.
# If they want dsmode of local, then they must
# specify that.
if 'dsmode' not in md:
md['dsmode'] = "net"
log.debug("using data from %s" % dev)
found.append(dev)
break
except OSError, e:
if e.errno != errno.ENOENT:
raise
except util.mountFailedError:
log.warn("Failed to mount %s when looking for seed" % dev)
def get_data(self):
defaults = {
"instance-id": "nocloud",
"dsmode": self.dsmode,
}
found = []
mydata = {
'meta-data': {},
'user-data': "",
'vendor-data': "",
'network-config': {}
}
try:
# Parse the kernel command line, getting data passed in
md = {}
if parse_cmdline_data(self.cmdline_id, md):
found.append("cmdline")
mydata = _merge_new_seed(mydata, {'meta-data': md})
except:
util.logexc(LOG, "Unable to parse command line data")
return False
# Check to see if the seed dir has data.
pp2d_kwargs = {
'required': ['user-data', 'meta-data'],
'optional': ['vendor-data', 'network-config']
}
for path in self.seed_dirs:
try:
seeded = util.pathprefix2dict(path, **pp2d_kwargs)
found.append(path)
LOG.debug("Using seeded data from %s", path)
mydata = _merge_new_seed(mydata, seeded)
break
except ValueError as e:
pass
# If the datasource config had a 'seedfrom' entry, then that takes
# precedence over a 'seedfrom' that was found in a filesystem
# but not over external media
if self.ds_cfg.get('seedfrom'):
found.append("ds_config_seedfrom")
mydata['meta-data']["seedfrom"] = self.ds_cfg['seedfrom']
# fields appropriately named can also just come from the datasource
# config (ie, 'user-data', 'meta-data', 'vendor-data' there)
if 'user-data' in self.ds_cfg and 'meta-data' in self.ds_cfg:
mydata = _merge_new_seed(mydata, self.ds_cfg)
found.append("ds_config")
def _pp2d_callback(mp, data):
return util.pathprefix2dict(mp, **data)
label = self.ds_cfg.get('fs_label', "cidata")
if label is not None:
# Query optical drive to get it in blkid cache for 2.6 kernels
util.find_devs_with(path="/dev/sr0")
util.find_devs_with(path="/dev/sr1")
fslist = util.find_devs_with("TYPE=vfat")
fslist.extend(util.find_devs_with("TYPE=iso9660"))
label_list = util.find_devs_with("LABEL=%s" % label)
devlist = list(set(fslist) & set(label_list))
devlist.sort(reverse=True)
for dev in devlist:
try:
LOG.debug("Attempting to use data from %s", dev)
try:
seeded = util.mount_cb(dev, _pp2d_callback,
pp2d_kwargs)
except ValueError as e:
if dev in label_list:
LOG.warn(
"device %s with label=%s not a"
"valid seed.", dev, label)
continue
mydata = _merge_new_seed(mydata, seeded)
# For seed from a device, the default mode is 'net'.
# that is more likely to be what is desired. If they want
# dsmode of local, then they must specify that.
if 'dsmode' not in mydata['meta-data']:
mydata['meta-data']['dsmode'] = "net"
LOG.debug("Using data from %s", dev)
found.append(dev)
break
except OSError as e:
if e.errno != errno.ENOENT:
raise
except util.MountFailedError:
util.logexc(LOG, "Failed to mount %s when looking for "
"data", dev)
# There was no indication on kernel cmdline or data
# in the seeddir suggesting this handler should be used.
if len(found) == 0:
return False
seeded_network = None
# The special argument "seedfrom" indicates we should
# attempt to seed the userdata / metadata from its value
# its primarily value is in allowing the user to type less
# on the command line, ie: ds=nocloud;s=http://bit.ly/abcdefg
if "seedfrom" in mydata['meta-data']:
seedfrom = mydata['meta-data']["seedfrom"]
seedfound = False
for proto in self.supported_seed_starts:
if seedfrom.startswith(proto):
seedfound = proto
break
if not seedfound:
LOG.debug("Seed from %s not supported by %s", seedfrom, self)
return False
if (mydata['meta-data'].get('network-interfaces')
or mydata.get('network-config')):
seeded_network = self.dsmode
# This could throw errors, but the user told us to do it
# so if errors are raised, let them raise
(md_seed, ud) = util.read_seeded(seedfrom, timeout=None)
LOG.debug("Using seeded cache data from %s", seedfrom)
# Values in the command line override those from the seed
mydata['meta-data'] = util.mergemanydict(
[mydata['meta-data'], md_seed])
mydata['user-data'] = ud
found.append(seedfrom)
# Now that we have exhausted any other places merge in the defaults
mydata['meta-data'] = util.mergemanydict(
[mydata['meta-data'], defaults])
netdata = {'format': None, 'data': None}
if mydata['meta-data'].get('network-interfaces'):
netdata['format'] = 'interfaces'
netdata['data'] = mydata['meta-data']['network-interfaces']
elif mydata.get('network-config'):
netdata['format'] = 'network-config'
netdata['data'] = mydata['network-config']
# if this is the local datasource or 'seedfrom' was used
# and the source of the seed was self.dsmode.
# Then see if there is network config to apply.
# note this is obsolete network-interfaces style seeding.
if self.dsmode in ("local", seeded_network):
if mydata['meta-data'].get('network-interfaces'):
LOG.debug("Updating network interfaces from %s", self)
self.distro.apply_network(
mydata['meta-data']['network-interfaces'])
if mydata['meta-data']['dsmode'] == self.dsmode:
self.seed = ",".join(found)
self.metadata = mydata['meta-data']
self.userdata_raw = mydata['user-data']
self.vendordata_raw = mydata['vendor-data']
self._network_config = mydata['network-config']
return True
LOG.debug("%s: not claiming datasource, dsmode=%s", self,
mydata['meta-data']['dsmode'])
return False
def _get_data(self):
defaults = {
"instance-id": "nocloud",
"dsmode": self.dsmode,
}
found = []
mydata = {'meta-data': {}, 'user-data': "", 'vendor-data': "",
'network-config': None}
try:
# Parse the system serial label from dmi. If not empty, try parsing
# like the commandline
md = {}
serial = util.read_dmi_data('system-serial-number')
if serial and load_cmdline_data(md, serial):
found.append("dmi")
mydata = _merge_new_seed(mydata, {'meta-data': md})
except Exception:
util.logexc(LOG, "Unable to parse dmi data")
return False
try:
# Parse the kernel command line, getting data passed in
md = {}
if load_cmdline_data(md):
found.append("cmdline")
mydata = _merge_new_seed(mydata, {'meta-data': md})
except Exception:
util.logexc(LOG, "Unable to parse command line data")
return False
# Check to see if the seed dir has data.
pp2d_kwargs = {'required': ['user-data', 'meta-data'],
'optional': ['vendor-data', 'network-config']}
for path in self.seed_dirs:
try:
seeded = util.pathprefix2dict(path, **pp2d_kwargs)
found.append(path)
LOG.debug("Using seeded data from %s", path)
mydata = _merge_new_seed(mydata, seeded)
break
except ValueError:
pass
# If the datasource config had a 'seedfrom' entry, then that takes
# precedence over a 'seedfrom' that was found in a filesystem
# but not over external media
if self.ds_cfg.get('seedfrom'):
found.append("ds_config_seedfrom")
mydata['meta-data']["seedfrom"] = self.ds_cfg['seedfrom']
# fields appropriately named can also just come from the datasource
# config (ie, 'user-data', 'meta-data', 'vendor-data' there)
if 'user-data' in self.ds_cfg and 'meta-data' in self.ds_cfg:
mydata = _merge_new_seed(mydata, self.ds_cfg)
found.append("ds_config")
def _pp2d_callback(mp, data):
return util.pathprefix2dict(mp, **data)
label = self.ds_cfg.get('fs_label', "cidata")
if label is not None:
# Query optical drive to get it in blkid cache for 2.6 kernels
util.find_devs_with(path="/dev/sr0")
util.find_devs_with(path="/dev/sr1")
fslist = util.find_devs_with("TYPE=vfat")
fslist.extend(util.find_devs_with("TYPE=iso9660"))
label_list = util.find_devs_with("LABEL=%s" % label.upper())
label_list.extend(util.find_devs_with("LABEL=%s" % label.lower()))
devlist = list(set(fslist) & set(label_list))
devlist.sort(reverse=True)
for dev in devlist:
try:
LOG.debug("Attempting to use data from %s", dev)
try:
seeded = util.mount_cb(dev, _pp2d_callback,
pp2d_kwargs)
except ValueError:
if dev in label_list:
LOG.warning("device %s with label=%s not a"
"valid seed.", dev, label)
continue
mydata = _merge_new_seed(mydata, seeded)
LOG.debug("Using data from %s", dev)
found.append(dev)
break
except OSError as e:
if e.errno != errno.ENOENT:
raise
except util.MountFailedError:
util.logexc(LOG, "Failed to mount %s when looking for "
"data", dev)
# There was no indication on kernel cmdline or data
# in the seeddir suggesting this handler should be used.
if len(found) == 0:
return False
# The special argument "seedfrom" indicates we should
# attempt to seed the userdata / metadata from its value
# its primarily value is in allowing the user to type less
# on the command line, ie: ds=nocloud;s=http://bit.ly/abcdefg
if "seedfrom" in mydata['meta-data']:
seedfrom = mydata['meta-data']["seedfrom"]
seedfound = False
for proto in self.supported_seed_starts:
if seedfrom.startswith(proto):
seedfound = proto
break
if not seedfound:
LOG.debug("Seed from %s not supported by %s", seedfrom, self)
return False
# This could throw errors, but the user told us to do it
# so if errors are raised, let them raise
(md_seed, ud) = util.read_seeded(seedfrom, timeout=None)
LOG.debug("Using seeded cache data from %s", seedfrom)
# Values in the command line override those from the seed
mydata['meta-data'] = util.mergemanydict([mydata['meta-data'],
md_seed])
mydata['user-data'] = ud
found.append(seedfrom)
# Now that we have exhausted any other places merge in the defaults
mydata['meta-data'] = util.mergemanydict([mydata['meta-data'],
defaults])
self.dsmode = self._determine_dsmode(
[mydata['meta-data'].get('dsmode')])
if self.dsmode == sources.DSMODE_DISABLED:
LOG.debug("%s: not claiming datasource, dsmode=%s", self,
self.dsmode)
return False
self.seed = ",".join(found)
self.metadata = mydata['meta-data']
self.userdata_raw = mydata['user-data']
self.vendordata_raw = mydata['vendor-data']
self._network_config = mydata['network-config']
self._network_eni = mydata['meta-data'].get('network-interfaces')
return True
def get_data(self):
defaults = {
"instance-id": "nocloud",
"dsmode": self.dsmode,
}
found = []
md = {}
ud = ""
try:
# Parse the kernel command line, getting data passed in
if parse_cmdline_data(self.cmdline_id, md):
found.append("cmdline")
except:
util.logexc(LOG, "Unable to parse command line data")
return False
# Check to see if the seed dir has data.
seedret = {}
if util.read_optional_seed(seedret, base=self.seed_dir + "/"):
md = util.mergemanydict([md, seedret['meta-data']])
ud = seedret['user-data']
found.append(self.seed_dir)
LOG.debug("Using seeded cache data from %s", self.seed_dir)
# If the datasource config had a 'seedfrom' entry, then that takes
# precedence over a 'seedfrom' that was found in a filesystem
# but not over external media
if 'seedfrom' in self.ds_cfg and self.ds_cfg['seedfrom']:
found.append("ds_config")
md["seedfrom"] = self.ds_cfg['seedfrom']
# if ds_cfg has 'user-data' and 'meta-data'
if 'user-data' in self.ds_cfg and 'meta-data' in self.ds_cfg:
if self.ds_cfg['user-data']:
ud = self.ds_cfg['user-data']
if self.ds_cfg['meta-data'] is not False:
md = util.mergemanydict([md, self.ds_cfg['meta-data']])
if 'ds_config' not in found:
found.append("ds_config")
label = self.ds_cfg.get('fs_label', "cidata")
if label is not None:
# Query optical drive to get it in blkid cache for 2.6 kernels
util.find_devs_with(path="/dev/sr0")
util.find_devs_with(path="/dev/sr1")
fslist = util.find_devs_with("TYPE=vfat")
fslist.extend(util.find_devs_with("TYPE=iso9660"))
label_list = util.find_devs_with("LABEL=%s" % label)
devlist = list(set(fslist) & set(label_list))
devlist.sort(reverse=True)
for dev in devlist:
try:
LOG.debug("Attempting to use data from %s", dev)
(newmd, newud) = util.mount_cb(dev, util.read_seeded)
md = util.mergemanydict([newmd, md])
ud = newud
# For seed from a device, the default mode is 'net'.
# that is more likely to be what is desired. If they want
# dsmode of local, then they must specify that.
if 'dsmode' not in md:
md['dsmode'] = "net"
LOG.debug("Using data from %s", dev)
found.append(dev)
break
except OSError as e:
if e.errno != errno.ENOENT:
raise
except util.MountFailedError:
util.logexc(LOG, "Failed to mount %s when looking for "
"data", dev)
# There was no indication on kernel cmdline or data
# in the seeddir suggesting this handler should be used.
if len(found) == 0:
return False
seeded_interfaces = None
# The special argument "seedfrom" indicates we should
# attempt to seed the userdata / metadata from its value
# its primarily value is in allowing the user to type less
# on the command line, ie: ds=nocloud;s=http://bit.ly/abcdefg
if "seedfrom" in md:
seedfrom = md["seedfrom"]
seedfound = False
for proto in self.supported_seed_starts:
if seedfrom.startswith(proto):
seedfound = proto
break
if not seedfound:
LOG.debug("Seed from %s not supported by %s", seedfrom, self)
return False
if 'network-interfaces' in md:
seeded_interfaces = self.dsmode
# This could throw errors, but the user told us to do it
# so if errors are raised, let them raise
(md_seed, ud) = util.read_seeded(seedfrom, timeout=None)
LOG.debug("Using seeded cache data from %s", seedfrom)
# Values in the command line override those from the seed
md = util.mergemanydict([md, md_seed])
found.append(seedfrom)
# Now that we have exhausted any other places merge in the defaults
md = util.mergemanydict([md, defaults])
# Update the network-interfaces if metadata had 'network-interfaces'
# entry and this is the local datasource, or 'seedfrom' was used
# and the source of the seed was self.dsmode
# ('local' for NoCloud, 'net' for NoCloudNet')
if ('network-interfaces' in md and
(self.dsmode in ("local", seeded_interfaces))):
LOG.debug("Updating network interfaces from %s", self)
self.distro.apply_network(md['network-interfaces'])
if md['dsmode'] == self.dsmode:
self.seed = ",".join(found)
self.metadata = md
self.userdata_raw = ud
return True
LOG.debug("%s: not claiming datasource, dsmode=%s", self, md['dsmode'])
return False
def get_data(self):
defaults = {
"instance-id": "nocloud",
"dsmode": self.dsmode,
}
found = []
md = {}
ud = ""
try:
# Parse the kernel command line, getting data passed in
if parse_cmdline_data(self.cmdline_id, md):
found.append("cmdline")
except:
util.logexc(LOG, "Unable to parse command line data")
return False
# Check to see if the seed dir has data.
seedret = {}
if util.read_optional_seed(seedret, base=self.seed_dir + "/"):
md = util.mergemanydict([md, seedret['meta-data']])
ud = seedret['user-data']
found.append(self.seed_dir)
LOG.debug("Using seeded cache data from %s", self.seed_dir)
# If the datasource config had a 'seedfrom' entry, then that takes
# precedence over a 'seedfrom' that was found in a filesystem
# but not over external media
if 'seedfrom' in self.ds_cfg and self.ds_cfg['seedfrom']:
found.append("ds_config")
md["seedfrom"] = self.ds_cfg['seedfrom']
# if ds_cfg has 'user-data' and 'meta-data'
if 'user-data' in self.ds_cfg and 'meta-data' in self.ds_cfg:
if self.ds_cfg['user-data']:
ud = self.ds_cfg['user-data']
if self.ds_cfg['meta-data'] is not False:
md = util.mergemanydict([md, self.ds_cfg['meta-data']])
if 'ds_config' not in found:
found.append("ds_config")
label = self.ds_cfg.get('fs_label', "cidata")
if label is not None:
# Query optical drive to get it in blkid cache for 2.6 kernels
util.find_devs_with(path="/dev/sr0")
util.find_devs_with(path="/dev/sr1")
fslist = util.find_devs_with("TYPE=vfat")
fslist.extend(util.find_devs_with("TYPE=iso9660"))
label_list = util.find_devs_with("LABEL=%s" % label)
devlist = list(set(fslist) & set(label_list))
devlist.sort(reverse=True)
for dev in devlist:
try:
LOG.debug("Attempting to use data from %s", dev)
(newmd, newud) = util.mount_cb(dev, util.read_seeded)
md = util.mergemanydict([newmd, md])
ud = newud
# For seed from a device, the default mode is 'net'.
# that is more likely to be what is desired. If they want
# dsmode of local, then they must specify that.
if 'dsmode' not in md:
md['dsmode'] = "net"
LOG.debug("Using data from %s", dev)
found.append(dev)
break
except OSError as e:
if e.errno != errno.ENOENT:
raise
except util.MountFailedError:
util.logexc(LOG, "Failed to mount %s when looking for "
"data", dev)
# There was no indication on kernel cmdline or data
# in the seeddir suggesting this handler should be used.
if len(found) == 0:
return False
seeded_interfaces = None
# The special argument "seedfrom" indicates we should
# attempt to seed the userdata / metadata from its value
# its primarily value is in allowing the user to type less
# on the command line, ie: ds=nocloud;s=http://bit.ly/abcdefg
if "seedfrom" in md:
seedfrom = md["seedfrom"]
seedfound = False
for proto in self.supported_seed_starts:
if seedfrom.startswith(proto):
seedfound = proto
break
if not seedfound:
LOG.debug("Seed from %s not supported by %s", seedfrom, self)
return False
if 'network-interfaces' in md:
seeded_interfaces = self.dsmode
# This could throw errors, but the user told us to do it
# so if errors are raised, let them raise
(md_seed, ud) = util.read_seeded(seedfrom, timeout=None)
LOG.debug("Using seeded cache data from %s", seedfrom)
# Values in the command line override those from the seed
md = util.mergemanydict([md, md_seed])
found.append(seedfrom)
# Now that we have exhausted any other places merge in the defaults
md = util.mergemanydict([md, defaults])
# Update the network-interfaces if metadata had 'network-interfaces'
# entry and this is the local datasource, or 'seedfrom' was used
# and the source of the seed was self.dsmode
# ('local' for NoCloud, 'net' for NoCloudNet')
if ('network-interfaces' in md
and (self.dsmode in ("local", seeded_interfaces))):
LOG.debug("Updating network interfaces from %s", self)
self.distro.apply_network(md['network-interfaces'])
if md['dsmode'] == self.dsmode:
self.seed = ",".join(found)
self.metadata = md
self.userdata_raw = ud
return True
LOG.debug("%s: not claiming datasource, dsmode=%s", self, md['dsmode'])
return False
def get_data(self):
defaults = {
"instance-id": "nocloud",
"dsmode": self.dsmode,
}
found = []
mydata = {'meta-data': {}, 'user-data': "", 'vendor-data': ""}
try:
# Parse the kernel command line, getting data passed in
md = {}
if parse_cmdline_data(self.cmdline_id, md):
found.append("cmdline")
mydata['meta-data'].update(md)
except:
util.logexc(LOG, "Unable to parse command line data")
return False
# Check to see if the seed dir has data.
pp2d_kwargs = {'required': ['user-data', 'meta-data'],
'optional': ['vendor-data']}
try:
seeded = util.pathprefix2dict(self.seed_dir, **pp2d_kwargs)
found.append(self.seed_dir)
LOG.debug("Using seeded data from %s", self.seed_dir)
except ValueError as e:
pass
if self.seed_dir in found:
mydata = _merge_new_seed(mydata, seeded)
# If the datasource config had a 'seedfrom' entry, then that takes
# precedence over a 'seedfrom' that was found in a filesystem
# but not over external media
if self.ds_cfg.get('seedfrom'):
found.append("ds_config_seedfrom")
mydata['meta-data']["seedfrom"] = self.ds_cfg['seedfrom']
# fields appropriately named can also just come from the datasource
# config (ie, 'user-data', 'meta-data', 'vendor-data' there)
if 'user-data' in self.ds_cfg and 'meta-data' in self.ds_cfg:
mydata = _merge_new_seed(mydata, self.ds_cfg)
found.append("ds_config")
def _pp2d_callback(mp, data):
return util.pathprefix2dict(mp, **data)
label = self.ds_cfg.get('fs_label', "cidata")
if label is not None:
# Query optical drive to get it in blkid cache for 2.6 kernels
util.find_devs_with(path="/dev/sr0")
util.find_devs_with(path="/dev/sr1")
fslist = util.find_devs_with("TYPE=vfat")
fslist.extend(util.find_devs_with("TYPE=iso9660"))
label_list = util.find_devs_with("LABEL=%s" % label)
devlist = list(set(fslist) & set(label_list))
devlist.sort(reverse=True)
for dev in devlist:
try:
LOG.debug("Attempting to use data from %s", dev)
try:
seeded = util.mount_cb(dev, _pp2d_callback,
pp2d_kwargs)
except ValueError as e:
if dev in label_list:
LOG.warn("device %s with label=%s not a"
"valid seed.", dev, label)
continue
mydata = _merge_new_seed(mydata, seeded)
# For seed from a device, the default mode is 'net'.
# that is more likely to be what is desired. If they want
# dsmode of local, then they must specify that.
if 'dsmode' not in mydata['meta-data']:
mydata['dsmode'] = "net"
LOG.debug("Using data from %s", dev)
found.append(dev)
break
except OSError as e:
if e.errno != errno.ENOENT:
raise
except util.MountFailedError:
util.logexc(LOG, "Failed to mount %s when looking for "
"data", dev)
# There was no indication on kernel cmdline or data
# in the seeddir suggesting this handler should be used.
if len(found) == 0:
return False
seeded_interfaces = None
# The special argument "seedfrom" indicates we should
# attempt to seed the userdata / metadata from its value
# its primarily value is in allowing the user to type less
# on the command line, ie: ds=nocloud;s=http://bit.ly/abcdefg
if "seedfrom" in mydata['meta-data']:
seedfrom = mydata['meta-data']["seedfrom"]
seedfound = False
for proto in self.supported_seed_starts:
if seedfrom.startswith(proto):
seedfound = proto
break
if not seedfound:
LOG.debug("Seed from %s not supported by %s", seedfrom, self)
return False
if 'network-interfaces' in mydata['meta-data']:
seeded_interfaces = self.dsmode
# This could throw errors, but the user told us to do it
# so if errors are raised, let them raise
(md_seed, ud) = util.read_seeded(seedfrom, timeout=None)
LOG.debug("Using seeded cache data from %s", seedfrom)
# Values in the command line override those from the seed
mydata['meta-data'] = util.mergemanydict([mydata['meta-data'],
md_seed])
mydata['user-data'] = ud
found.append(seedfrom)
# Now that we have exhausted any other places merge in the defaults
mydata['meta-data'] = util.mergemanydict([mydata['meta-data'],
defaults])
# Update the network-interfaces if metadata had 'network-interfaces'
# entry and this is the local datasource, or 'seedfrom' was used
# and the source of the seed was self.dsmode
# ('local' for NoCloud, 'net' for NoCloudNet')
if ('network-interfaces' in mydata['meta-data'] and
(self.dsmode in ("local", seeded_interfaces))):
LOG.debug("Updating network interfaces from %s", self)
self.distro.apply_network(
mydata['meta-data']['network-interfaces'])
if mydata['meta-data']['dsmode'] == self.dsmode:
self.seed = ",".join(found)
self.metadata = mydata['meta-data']
self.userdata_raw = mydata['user-data']
self.vendordata = mydata['vendor-data']
return True
LOG.debug("%s: not claiming datasource, dsmode=%s", self, md['dsmode'])
return False
def _has_ntfs_filesystem(devpath):
ntfs_devices = util.find_devs_with("TYPE=ntfs", no_cache=True)
LOG.debug('ntfs_devices found = %s', ntfs_devices)
return os.path.realpath(devpath) in ntfs_devices
