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* changed definition of storage device: only "valid" devices are available now

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This commit is contained in:
lars 2009-06-13 12:22:53 +00:00
parent b5c4eabc26
commit 4f24c813cd
1 changed files with 21 additions and 22 deletions
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43
src/cryptobox/core/blockdevice.py
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@ -254,32 +254,31 @@ class Blockdevice:
cached = CACHE.get(cache_link)
if not cached is None:
return cached
result = True
if self.range > 1:
# always check the current state of "result" to skip useless checks
if result and (self.range > 1):
## partitionable blockdevice
CACHE.set(cache_link, False)
return False
if self.size < MINIMUM_STORAGE_SIZE:
result = False
if result and not self.is_valid():
result = False
if result and (self.size < MINIMUM_STORAGE_SIZE):
## extended partition, unused loop device
CACHE.set(cache_link, False)
return False
result = False
## are we the device mapper of a luks device?
for slave in self.slaves:
if get_blockdevice(slave, self.sysblock_dir,
self.devnode_dir).is_luks():
CACHE.set(cache_link, False)
return False
## if we are a luks device with exactly one child, then
## we are a storage
if (len(self.children) == 1) and self.is_luks():
CACHE.set(cache_link, True)
return True
if self.children:
## a parent blockdevice
CACHE.set(cache_link, False)
return False
CACHE.set(cache_link, True)
return True
if result:
for slave in self.slaves:
if get_blockdevice(slave, self.sysblock_dir,
self.devnode_dir).is_luks():
result = False
if result and self.children:
## if we are a luks device with exactly one child, then
## we are a storage
if not ((len(self.children) == 1) and self.is_luks()):
## a parent blockdevice
result = False
CACHE.set(cache_link, result)
return result
def is_partitionable(self):