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Complain if an mbox file being read changes sizes. (Nobody should be writing

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to these files - we have locked them)
This commit is contained in:
Paul Rodger 2002-04-19 00:19:44 +00:00
parent 04c22934f1
commit 0cee3de4e7
1 changed files with 9 additions and 0 deletions
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9
archivemail.py
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@ -229,6 +229,7 @@ class Mbox(mailbox.PortableUnixMailbox):
original_atime = None # last-accessed timestamp
original_mtime = None # last-modified timestamp
original_mode = None # file permissions to preserve
starting_size = None # file size of mailbox on open
def __init__(self, path, mode="r"):
"""Constructor for opening an existing 'mbox' mailbox.
@ -244,6 +245,7 @@ class Mbox(mailbox.PortableUnixMailbox):
self.original_atime = os.path.getatime(path)
self.original_mtime = os.path.getmtime(path)
self.original_mode = os.stat(path)[stat.ST_MODE]
self.starting_size = os.path.getsize(path)
self.mbox_file = open(path, mode)
except IOError, msg:
unexpected_error(msg)
@ -356,6 +358,10 @@ class Mbox(mailbox.PortableUnixMailbox):
blank_file = open(self.mbox_file_name, "w")
blank_file.close()
def get_size(self):
"""Return the current size of the mbox file"""
return os.path.getsize(self.mbox_file_name)
class RetainMbox(Mbox):
"""Class for holding messages that will be retained from the original
@ -891,6 +897,9 @@ def _archive_mbox(mailbox_name, final_archive_name):
vprint("finished reading messages")
original.exclusive_unlock()
original.close()
if original.starting_size != original.get_size():
unexpected_error("the mailbox '%s' changed size during reading!" % \
mailbox_name)
original.reset_stat()
if not options.dry_run:
if retain: retain.close()