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Consider segment incomplete if segment file is empty or too small

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This fixes an IOError that could be raised when trying to seek() to
a negative file offset, because (for any reason) a segment file was
empty (or too small).
This commit is contained in:
Petros Moisiadis 2013-12-30 17:21:47 +02:00
parent e9fd2bc5e8
commit c93363946b
1 changed files with 8 additions and 1 deletions
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9
attic/repository.py
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@ -1,5 +1,6 @@
from configparser import RawConfigParser
from binascii import hexlify
import errno
import os
import re
import shutil
@ -314,7 +315,13 @@ def cleanup(self):
def is_complete_segment(self, filename):
with open(filename, 'rb') as fd:
fd.seek(-self.header_fmt.size, 2)
try:
fd.seek(-self.header_fmt.size, os.SEEK_END)
except Exception as e:
# return False if segment file is empty or too small
if e.errno == errno.EINVAL:
return False
raise e
return fd.read(self.header_fmt.size) == self.COMMIT
def segment_filename(self, segment):