Your message dated Sat, 19 Aug 2006 10:19:54 +0200
with message-id <[EMAIL PROTECTED]>
has caused the Debian Bug report #383467,
regarding wipe incorrectly determines partition size of large partitions
(probable 32 bit integer overflow)
to be marked as having been forwarded to the upstream software
author(s) [EMAIL PROTECTED]
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Debian bug tracking system administrator
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-------- Original-Nachricht --------
Datum: Thu, 17 Aug 2006 15:32:48 +0200 (CEST)
Von: "Rainer Schöpf" <[EMAIL PROTECTED]>
An: [EMAIL PROTECTED]
Betreff: Bug#383467: wipe incorrectly determines partition size of large
partitions (probable 32 bit integer overflow)
Package: wipe
Version: 0.20-2
Severity: normal
*** Please type your report below this line ***
Running wipe on a large partition, eg with
wipe -kD /dev/hda1
does not always wipe the whole partition.
Example: I tried to wipe a partition with 81956657664 bytes; wipe wrote
only 352279040 Bytes per pass (checked with strace).
Since this number is exactly the same as (81956657664 % 2^32) = 352279040,
I conclude that wipe tries to coerce the size into a 32 bit number.
This is serious problem: not only does it fail to erase the whole
partition, the progress output does not really indicate that. Nowhere it
is explained that the numbers mean the number of 16kB blocks being
written.
In the case in question, I only noted the obvious mismatch between the time
for a pass and the size of the partition.
If my analysis is correct, then it might be a good idea to check what
happens if one tries to wipe a file of more than 4GB size.
Rainer Schoepf
-- System Information:
Debian Release: testing/unstable
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-1-k7
Locale: LANG=en_US.ISO-8859-15, LC_CTYPE=en_US.ISO-8859-15 (charmap=ISO-8859-15)
Versions of packages wipe depends on:
ii libc6 2.3.6-15 GNU C Library: Shared libraries
wipe recommends no packages.
-- no debconf information
Rainer Schöpf
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